Source: https://patents.google.com/patent/US20080210262
Timestamp: 2018-02-20 18:47:52
Document Index: 272765883

Matched Legal Cases: ['ART 1', 'ART 6', 'ART 7', 'art 6', 'ART 7', 'ART 8', 'ART 8', 'ART 9', 'art 6', 'ART 9', 'art 6']

US20080210262A1 - Cleaning Method and Apparatus - Google Patents
US20080210262A1
US20080210262A1 US11547655 US54765505A US20080210262A1 US 20080210262 A1 US20080210262 A1 US 20080210262A1 US 11547655 US11547655 US 11547655 US 54765505 A US54765505 A US 54765505A US 20080210262 A1 US20080210262 A1 US 20080210262A1
US8377222B2 (en )
In some embodiments of the invention an atomized treatment fluid is introduced by the apparatus 300 and thereafter circulated through the processing equipment 302 and through the apparatus 300. In these embodiments the aspirator/blower 45 may be used to provide a low pressure
While a specific location for the aspirator/blower 45 is illustrated in FIG. 1, the reader skilled in the art will readily appreciate that in alternative embodiments of the invention, the aspirator/blower 45 is located at any other suitable location. Also, in some embodiments of the invention, the suction pump has the same ability of aspirating and blowing gas or gas & atomized chemical solution mixture and the aspirator/blower 45 may then not be required. Furthermore, depending of the length or size of the circuit through which the treatment liquid is circulated, a plurality of aspirator/blowers may be provided. Also, this device may not be part of the apparatus 300 without departing from the scope of the invention.
In some embodiments of the invention, an overflow valve is also connected to the separator 51 and allows to direct fluids from the separator 51 towards the valves 413 and
CHART 1 (PAGE 1) tank outlet
REFERENCE DRAWING 5 valve - also
LINE WASH & SANIITIZE open 3 Steam flow valve Chemical &
PROGRAM USING THE in Block & bleed (also turn on Routing valve Routing valve compressed
PUSH & PULL METHOD rinse aqueduc steam shutt off from CIP to circulation gas main
STEP DESCRIPTION low level CIP supply pump Aqueduc water valve water valve valve 14) to circuit tank 1 valve
Step Phase Item number Step time or volume 2 6 8 9 15 18 20 23
6 Repeat steps 3-5 × time(s)
8 Push & pull to circulation tk X
12 Repeat steps 9-11 × time(s)
17 Repeat steps 15-16 × tm(s)
19 Push & pull to circulation tk X
23 Repeat steps 20-22 × tm(s)
28 Repeat steps 26-27 × tm(s)
29 Sanitizing Partial sanitizer sol'n prep. X X
Routing valve drain,
Atomized Live steam Flow valves - also (open Routing on =
chemical valve valve restriction activate 35 Suction Aspirator/ Routing path to valve to tank 1 to
(caustic or (flow valve (normally (reverse return blower valve (normally pipe 49 (if off, or to any CIP
acid or sanitizer) Compressed gas valve controlled) open to circuit) flow valves) pump fan open to 51) when on) pipe 61 if on) Vacuum pump (also open valve 53) tank)
Step 24 26 27 31 32 38 45 46 47 48 54 55
REFERENCE DRAWING 5 valve CIP drain Chemical valve to water tank Chemical
LINE WASH & SANIITIZE (open valve injection recov. outlet valve solution Caustic
PROGRAM USING THE path from (normally port (add by silo (also (also tanks tank
PUSH & PULL METHOD 51 to 49 open conductivity turn on opens 63 blocking outlet
STEP DESCRIPTION Step time when on) to drain) or flow) valve 81) if low level) valve valve
Step Phase Item number or volume 56 58 59 62 63 64 65
7 Caustic wash Partial caustic sol'n to line X X X X
8 Push & pull to circulation tk X X X
10 Push & pull to circulation tk X X X X
18 Acid wash Partial acid sol'n to line X X X
19 Push & pull to circulation tk X X X
21 Push & pull to circulation tk X X X X
Recov. Acid tank
Acid tank Caustic tank rinse tank return valve
Recovered outlet valve return valve return valve (switch Aspirator/
rinse tank (add water 63 (swich to 70 (to drain at to drain if blower
outlet valve at low level) at high level) high level) at high level) Spare Spare fan Spare Spare Spare Spare Spare Spare
Step 66 67 69 70 71 72 73 74 75 76 77 78 79 80
REFERENCE DRAWING 5 Steam
LINE WASH & SANITIZE Circulation flow
PROGRAM USING THE tk valve
PUSH & PULL METHOD outlet (also
FOR THE RINSE STEPS & valve - turn
THE FOAMING METHOD also Block on Routing Routing Chemical
FOR THE WASH STEPS & open & steam valve valve &
THE CHEMICAL 3 in bleed shutt from to compressed
ATOMIZING METHOD FOR Step rinse CIP Aqueduc aqueduc off CIP circulation gas
THE SANITIZE STEPS time low supply water water valve to tank main
STEP DESCRIPTION or level pump valve valve 14) circuit 1 valve
Step Phase Item number volume 2 6 8 9 15 18 20 23
14 Repeat steps 12-13 × tm(s)
22 Repeat steps 20-21 × tm(s)
23 Sanitiz Atom. Sani. + push & pull X
Atomized Routing valve to Routing
chemical Flow valves - (open tank valve
valve restriction also Routing path 1 Vacuum (off = to
(caustic Live valve activate valve to (if off, pump drain,
or steam (normally 35 (normally pipe or to (also on = to
acid Compressed valve open (reverse Suction Aspirator/ open 49 pipe open any
or gas (flow to flow return blower to when 61 valve CIP
sanitizer) valve controlled) circuit) valves) pump fan 51) on) if on) 53) tank)
THE FOAMING METHOD Routing CIP
FOR THE WASH STEPS & valve drain Chemical Routing valve Chemical
THE CHEMICAL (open valve injection to recov. Fresh water solution Caustic
ATOMIZING METHOD FOR Step path from (normally port (add by silo (also tank tanks tank
THE SANITIZE STEPS time 51 to 49 open conductivity turn on outlet blocking outlet
STEP DESCRIPTION or when on) to drain) of flow) valve 81) outlet valve valve valve
Step Phase Item number volume 56 58 59 62 63 64 65
23 Sanit. Atom. Sani. +push & pull
Recovered Acid Caustic Recov. rinse Acid tank
rinse tank tank return tank return return valve
tank outlet valve (swich to valve (to drain (switch to drain Aspirator/
outlet valve valve 70 at high level) at high level) if at high level) Spare Spare blower fan Spare Spare Spare Spare Spare Spare
THE ATOMIZNG METHOD
SANITIZE STEPS Steam
(CHEMICAL ATOMIZATION Circulation modulating
IS FOLLOWED BY tk outlet Block & valve (set
CIRCULATION OF THE Step valve - also CIP Aqueduc bleed point
ATOMIZED SOLUTION) time open 3 in rinse supply water aqueduc controlled
STEP DESCRIPTION or low level pump valve water valve by RTD)
Step Phase Item number volume 2 6 8 9 15
1 Rec Partial rinse to circuit & pull X X
13 Repeat steps 9-12 × time(s)
16 Repeat steps 14-15 × time(s)
20 Push & pull atom + rev. flow
23 Repeat steps 19-22 × time(s)
26 Repeat steps 25-26 × time(s)
31 Final drain (all lines) X
Routing Routing Chemical & valve Flow restriction Routing valves -
valve valve to compressed (caustic Live steam valve (normally also activate
from CIP circulation gas main or acid or Compressed valve (flow open to 35 (reverse
to circuit tank 1 valve sanitizer) gas valve controlled) circuit) flow valves)
Step 18 20 23 24 26 27 31 32
Routing Routing Vacuum on =
Routing valve valve to pump to
Suction Aspirator/ valve (open path tank 1 (also any
return blower (normally to pipe 49 (if off, or to open CIP
pump fan open to 51) when on) pipe 61 if on) valve 53) tank)
Step 38 45 46 47 48 54 55
THE ATOMIZNG METHOD Routing
IS FOLLOWED BY from valve (add by silo water solution Caustic
CIRCULATION OF THE Step 51 to 49 (normally conductivity (also tank tanks tank
ATOMIZED SOLUTION) time when open to of turn on outlet blocking outlet
STEP DESCRIPTION or on) drain) flow) valve 81) valve valve valve
5 Do steps 3-4 (+ reverse flow)
6 Repeat steps 3-5 x time(s)
13 Repeat steps 9-12 x time(s)
16 Repeat steps 14-15 x time(s)
23 Repeat steps 19-22 x time(s)
26 Repeat steps 25-26 x time(s)
Caustic Recov.
tank rinse Acid tank
return tank return
Recovered valve return valve
rinse Acid (swich valve (switch to
tank tank to 70 (to drain drain if
outlet outlet at high at high at high Aspirator/
valve valve level) level) level) Spare Spare blower fan Spare Spare Spare Spare Spare Spare
FOR THE WASH & Circu-
SANITIZE STEPS lation Steam
(CHEMICAL ATOMIZATION tk outlet modulat-
IS DONE WITH valve - Block ing Routing Routing Chemical
PRESSURIIZATION OF THE also open & bleed valve valve valve to & com-
CIRCUIT FOLLOWED BY 3 in CIP Aqueduc aqueduc (set point from circu- pressed
DEPRESSURIZATION) Step time rinse low supply water water controlled CIP to lation gas main
STEP DESCRIPTION or level pump valve valve by RTD) circuit tank 1 valve
11 Repeat steps 9-10 x time(s)
21 Repeat steps 19-20 x time(s)
26 Repeat steps 24-25 x time(s) X
27 Sanitizer Push + atom. sani & pressur. X
29 Repeat steps 27-28 x time(s)
Routing Routing valve
Atomized Flow valves - Routing valve (off = to
chemical Live restriction also Routing valve to tank 1 Vacuum drain,
valve Com- steam valve activate 35 valve (open (if off, pump on = to
(caustic pressed valve (normally (reverse Suction (normally path to or to (also any
or acid or gas (flow open to flow return Aspirator/ open pipe 49 pipe 61 open CIP
sanitizer) valve controlled) circuit) valves) pump blower fan to 51) when on) if on) valve 53) tank)
IS DONE WITH Routing CIP Chemical Routing Fresh Chemical
PRESSURIIZATION OF THE valve drain valve injection valve to water solution Caustic
CIRCUIT FOLLOWED BY (open path (normally port (add by recov. silo tank tanks tank
DEPRESSURIZATION) Step from 51 to open conductivity (also turn outlet blocking outlet
STEP DESCRIPTION time or 49 when on) to drain) or flow) on valve 81) valve valve valve
7 Caustic Partial caustic sol'n to circuit X X X X
11 Repeat steps 9-10 × time(s)
21 Repeat steps 19-20 × time(s)
26 Repeat steps 24-25 × time(s)
29 Repeat steps 27-28 × time(s)
Recovered Acid tank return rinse tank Acid tank
rinse tank tank valve (swich return valve return valve
outlet outlet to 70 at (to drain (switch to drain Aspirator/
valve valve high level) at high level) if at high level) Spare Spare blower fan Spare Spare Spare Spare Spare Spare
IS DONE WITH Circulation
VACUUMIZATION OF THE tk outlet Block &
CIRCUIT FOLLOWED BY valve - bleed
VACUUM LOSS WITH THE Step also open 3 CIP Aqueduc aqueduc
PUSH & PULL METHOD) time in rinse supply water water
STEP DESCRIPTION or low level pump valve valve
Step Phase Item number volume 2 6 8 9
10 Repeat steps 7-9 × time(s)
13 Repeat steps 11-12 × time(s)
17 Repeat steps 14-16 × time(s)
20 Repeat steps 18-19 × time(s)
23 Repeat steps 21-22 × time(s)
Steam Atomized Flow
modulating chemical Live restriction
valve Routing Routing Chemical & valve steam valve
(set point valve valve to compressed (caustic or Compressed valve (normally
controlled from CIP circulation gas main acid or gas (flow open
by RTD) to circuit tank 1 valve sanitizer) valve controlled) to circuit)
Step 15 18 20 23 24 26 27 31
valves - Routing valve valve to Routing
also valve (open tank 1 (if Vacuum valve
activate 35 Suction Aspirator/ (normally path to off, or to pump (off = to drain,
(reverse flow return blower open pipe 49 pipe 61 (also open on = to any
valves) pump fan to 51) when on) if on) valve 53) CIP tank)
Step 32 38 45 46 47 48 54 55
IS DONE WITH Routing
VACUUMIZATION OF THE valve CIP drain Chemical Routing Chemical
CIRCUIT FOLLOWED BY (open valve injection valve solution Caustic
VACUUM LOSS WITH THE Step path from (normally port (add by to recov. silo Fresh tanks tank
PUSH & PULL METHOD) time 51 to 49 open conductivity (also turn water tank blocking outlet
STEP DESCRIPTION or when on) to drain) or flow) on valve 81) outlet valve valve valve
Recov. rinse Acid
Acid Caustic tank tank return tank return
Recovered tank return valve valve valve (switch
rinse tank outlet (swich to 70 (to drain to drain if Aspirator/
outlet valve valve at high level) at high level) at high level) Spare Spare blower fan Spare Spare Spare Spare Spare Spare
(PAGE 1) Circulation
REFERENCE tk outlet
DRAWING 6a valve - Block &
SILO WASH & SANIITIZE also bleed
PROGRAM USING THE Step open 3 CIP Aqueduc aqueduc
PUSH & PULL METHOD time in rinse supply water water
1 Recovery Partial rinse to circuit & pull X X
5 Rinse Partial rinse to circuit & pull X
11 Caustic Partial caustic Sol'n to silo X
13 Same caustic sol'n to silo X X
14 Push & pull to circulation tk X X
15 Push & pull to circulation tk X X
16 Push & pull (empty lines) X X
17 Repeat steps 13-16 × times
18 Rinse Empty circulation tank X X
22 Partial rinse to circuit & pull X X
26 Repeat steps 22-25 × times
29 Sol'n sent to circuit & pull X X
valve Atomized Flow
(also Routing chemical Live restriction
turn valve Routing Chemical & valve steam valve
on stem from valve to compressed (caustic or Compressed valve (normally
shutt off CIP to circulation gas main acid or gas (flow open to
valve 14) circuit tank 1 valve sanitizer) valve controlled) circuit)
valves - Routing
also Routing Routing valve
activate Routing valve valve to Vacuum (off =
35 valve (open tank 1 pump to drain,
(reverse Suction Aspirator/ (normally path to (if off, (also on =
flow return blower open pipe 49 or to pipe open to any
valves) pump fan to 51) when on) 61 if on) valve 53) CIP tank)
CHART 6 (PAGE 2) Routing
REFERENCE DRAWING 6a Routing CIP drain Chemical valve Fresh Chemical
SILO WASH & SANIITIZE valve valve injection to drain or water solution Causitc
PROGRAM USING THE (open path (normally port (added recovery silo tank tanks tank
PUSH & PULL METHOD Step from 51 to open to by conductivity (also turn outlet blocking outlet
STEP DESCRIPTION time or 49 when on) drain) or flow) on 81) valve valve valve
1 Recovery Partial rinse to circuit & pull X
3 Push & pull to recovery silo X
4 Push & pull to recovery silo X
11 Caustic wash Partial caustic sol'n to silo X X X X
14 Push & pull to circulation tk X X X X
15 Push & pull to circulation tk X X X X
16 Push & pull (empty lines) X X X X
18 Rinse Empty circulation tank X
22 Partial rinse to circuit & pull
27 Drain silo & lines X
28 Sanitizing Partial sanitizer sol'n prep. X X
29 Sol'n sent to circuit & pull
Recovered Acid tank
Caustic tank rinse tank return valve Routing Silo &
Recovered Acid return valve return valve (switch to valve to Suction return
rinse tank tank (swich to (to drain drain to Silo by flow panel pump Silo Silo line
outlet outlet 70 at at high drain if at pass and to prior to inlet outlet drain
Step valve valve high level) level) high level) valve selected silo silo valve valve Spare Spare Spare valve
66 67 69 70 71 572 573 574 575 576 577 578 579 580
CHART 7 (PAGE 1)
SILO WASH & SANITIZE
AUTOMIIZATION Circulation tk Steam modulating Chemical & Atomized chemical
IS FOLLOWED BY AN outlet valve - also Aqueduc block valve (set Routing valve Routing valve compressed valve (caustic
OPTIONAL PAUSE) open 3 in rinse CIP supply Aqueduc & bleed water point controlled from CIP to circulation gas or acid or
STEP DESCRIPTION Step time low level pump water valve valve by RTD) to circuit tank 1 main valve sanitizer)
Step Phase Item number or volume 2 6 8 9 15 18 20 23 24
10 Steps 1-10 same as chart 6
11 Caustic Partial caustic sol'n to silo X X X
12 Push + atom. caustic & pull X X
13 Push + atom. caustic & pull X X
14 Push + atom. caustic & pull X X
15 Pause X
16 Repeat steps 12-16 × tm(s)
17 Rinse Partial rinse to silo & pull X X
18 Push & pull to caustic tank X
19 Push & pull to caustic tank X
20 Push & pull to caustic tank X
21 Push & pull to empty lines X
22 Repeat steps 18-21 × times
23 Drain silo & lines X
24 Sanitizing Partial sani sol'n preparat. X X
25 Partial sani sol'n to silo X X
26 Push + atom. sani & pull X X
27 Push + atom. sani & pull X X
28 Push + atom. sani & pull X X
29 Pause X
30 Final drain (silo & lines)
Live steam Flow restriction Routing valves - Routing valve Routing valve to Routing valve
Compressed valve (flow valve (normally also activate 35 Suction Aspirator/ Routing valve (open path tank 1 (if Vacuum pump (off = to drain,
(reverse (normally to pipe 49 off, or to (also on to any
Step gas valve controlled) open to circuit) flow valves) return pump blower fan open to 51) when on) pipe 61 if on) open valve 53) CIP tank)
26 27 31 32 38 45 46 47 48 54 55
CHART 7 (PAGE 2)
(CHEMICAL ATOMIIZATION
IS FOLLOWED BY AN Routing valve CIP drain Chemical injection Routing valve to Fresh water Chemical solution Recovered Acid tank
OPTIONAL PAUSE) (open path from valve (normally port (add by recov. silo (also tank outlet tanks blocking Causitc tank rinse tank outlet
STEP DESCRIPTION Step time 51 to 49 when on) open to drain) conductivity or flow) turn on valve 81) valve valve outlet valve outlet valve valve
Step Phase Item number or volume 56 58 59 62 63 64 65 66 67
12 Push + atom. caustic & pull
13 Push + atom. caustic & pull
14 Push + atom. caustic & pull
17 Rinse Partial rinse to silo & pull X
21 Push & pull to empty lines
25 Partial sani sol'n to silo
26 Push + atom. sani & pull
27 Push + atom. sani & pull
28 Push + atom. sani & pull
Caustic tank return Recov. rinse tank Acid tank return Silo by Routing valve to Silo Routing Routing valve to Silo vent valve
valve (swich to return valve (to valve (switch to pass flow panel and to Suction pump Silo inlet outlet valve to silo inlet valve (off = open/opens Silo & return
70 at high level) drain at high level) drain if at high level) valve selected silo prior to silo valve valve silo spray ball & overflow pipe if vacuum or pressure) line drain valve
Step 69 70 71 572 573 574 75 576 877 878 879 580
CHART 8 (PAGE 1)
IS FOLLOWED BY THE Circulation tk Steam modulating Chemical & Atomized chemical
CIRCULATION OF THE outlet valve - also Aqueduc block valve (set Routing valve Routing valve compressed valve (caustic
ATOMIZED SOLUTION) Step time open 3 in rinse CIP supply Aqueduc & bleed water point controlled from CIP to circulation gas or acid or
STEP DESCRIPTION or volume low level pump water valve valve by RTD) to circuit tank 1 main valve sanitizer)
Step Phase Item number 2 6 8 9 15 18 20 23 24
11 Caustic Drain CIP suction & disch. X X
15 Push + atom. caustic & pull X X
16 Circulate via silo spray ball X X X
17 Circulate via silo overflow X X X
18 Circulate via silo inlet valve X X X
19 Circulate via silo by pass X X X
20 Repeat steps 12-19 × tm(s)
21 Rinse Partial rinse to silo & pull X X
22 Push & pull to caustic tank X
23 Push & pull to caustic tank X
24 Push & pull to caustic tank X
25 Push & pull to empty lines X
26 Repeat steps 22-25 × tm(s)
28 Sanitizing Partial sani. sol'n preparat. X X
29 Partial sani to silo & pull X X X
30 Drain CIP suction & disch. X
31 Push + atom. Sani. & pull X X
32 Push + atom. Sani. & pull X X
33 Push + atom. Sani. & pull X X
34 Push + atom. Sani. & pull X X
35 Circulate via silo spray ball X X
36 Circulate via silo overflow
37 Circulate via silo inlet valve
38 Circulate via silo by pass
39 Final drain (silo & lines) X X
Compressed valve (flow valve (normally also activate 35 Suction Aspirator/ Routing valve (open path tank 1 (if Vacuum pump (off = to drain/
(reverse (normally to pipe 49 off, or to (also rec tk, on =
gas valve controlled) open to circuit) flow valves) return pump blower fan open to 51) when on) pipe 61 if on) open valve 53) To CIP tks)
Step 26 27 31 32 38 45 46 47 48 54 55
CHART 8 (PAGE 2)
CIRCULATION OF THE Routing valve CIP drain Chemical injection Routing valve to Fresh water Chemical solution Recovered Acid tank
ATOMIZED SOLUTION) (open path from valve (normally port (add by recov. silo (also tank outlet tanks blocking Causitc tank rinse tank outlet
11 Caustic Drain CIP suction & disch. X
15 Push + atom. caustic & pull
16 Circulate via silo spray ball
17 Circulate via silo overflow
18 Circulate via silo inlet valve
19 Circulate via silo by pass
21 Rinse Partial rinse to silo & pull X
22 Push & pull to caustic tank
25 Push & pull to empty lines
29 Partial sani to silo & pull
31 Push + atom. Sani. & pull
32 Push + atom. Sani. & pull
33 Push + atom. Sani. & pull
34 Push + atom. Sani. & pull
35 Circulate via silo spray ball
39 Final drain (silo & lines) X
CHART 9 (PAGE 1)
SANITIZE STEPS Circulation Chem-
(CHEMICAL ATOMIZATION tk outlet ical &
IS DONE WITH valve - Aqueduc Routing Routing com-
PRESSURIIZATION OF THE also block & Steam valve valve pressed
CIRCUIT FOLLOWED BY Step open 3 CIP Aqueduc bleed shutt from to gas
DEPRESSURIZATION) time in rinse supply water water off CIP to circulation main
STEP DESCRIPTION or low level pump valve valve valve circuit tank 1 valve
10 Steps 1-10 sams as chart 6
11 Caustic Push atom. caustic & press. X
12 Push atom. caustic & pull X
13 Push atom. caustic & press. X
14 Push atom. caustic & pull X
15 Push atom. caustic & pull X
16 Repeat steps 11-15 × tm(s)
22 Repeat steps 17-21 × tm(s)
25 Partial sani sol'n to silo X X X
26 Push + atom. sani & press. X
27 Push + atom. sani & pull X
28 Push + atom. sani & press. X
29 Push + atom. sani & pull X
30 Push + atom. sani & pull X
31 Push + atom. sani & pull X
32 Final drain (silo & lines) X X X
Atomized valves - Routing
chemical Flow also Routing valve to Routing
valve Live restriction activate Routing valve tank 1 Vacuum valve
(caustic steam valve 35 valve (open (if off, pump (off = to
or Compressed valve (normally (reverse (normally path to or to (also drain/rec
acid or gas (flow open to flow Aspirator/ Aspirator/ open pipe 49 pipe 61 open tk, on =
sanitizer) valve controlled) circuit) valves) blower fan blower fan to 51) when on) if on) valve 53) To CIP tks)
CHART 9 (PAGE 2)
THE ATOMIZNG METHOD valve
FOR THE WASH & to
SANITIZE STEPS Routing CIP Chemical recov.
(CHEMICAL ATOMIZATION valve drain injection silo
IS DONE WITH (open valve port (also Fresh Chemical
PRESSURIIZATION OF THE path (normally (add by turn water solution Causitc
CIRCUIT FOLLOWED BY Step from open conductivity on tank tanks tank
DEPRESSURIZATION) time 51 to 49 to or valve outlet blocking outlet
STEP DESCRIPTION or when on) drain) flow) 81) valve valve valve
10 Caustic Steps 1-10 sams as chart 6
11 Push atom. caustic & press.
12 Push atom. caustic & pull
13 Push atom. caustic & press.
14 Push atom. caustic & pull
15 Push atom. caustic & pull
18 Push & pull to caustic tank
23 Drain silo & lines
26 Push + atom. sani & press.
28 Push + atom. sani & press.
29 Push + atom. sani & pull
30 Push + atom. sani & pull
31 Push + atom. sani & pull
32 Final drain (silo & lines) X
Caustic Recov. Acid Silo
tank rinse tank vent
return tank return Routing Routing valve
valve return valve valve valve (off =
(swich valve (switch to Routing to open/
Recovered to (to to flow Suction valve silo opens Silo &
rinse Acid 70 drain drain Silo panel pump to inlet if return
tank tank at at if at by and to prior Silo Silo silo valve & vacuum line
outlet outlet high high high pass selected to inlet outlet spray overflow or drain
valve valve level) level) level) valve silo silo valve valve ball pipe pressure) valve
Step 66 67 69 70 71 572 573 574 75 576 877 878 879 580
1. A method for cleaning an interior surface of a processing equipment using a treatment liquid, the processing equipment including a pipe section defining pipe section first and second ends, the pipe section defining a pipe section volume delimited by the pipe section first and second ends, the pipe section being initially at an initial internal pressure, said method comprising:
5. A method as defined in claim 4, further comprising, after having recovered the predetermined volume of the treatment liquid:
reintroducing the predetermined volume of the treatment liquid into the pipe section at a location substantially adjacent the pipe section first end; and
recirculating the predetermined volume of the treatment liquid through the pipe section by simultaneously:
10. A method as defined in claim 4, further comprising, further to recovering the predetermined volume:
reintroducing the predetermined volume of the treatment liquid into the pipe section at a location substantially adjacent the pipe section second end; and
recirculating the predetermined volume of the treatment liquid through the pipe section by simultaneously
reducing an internal pressure within the pipe section at a location substantially adjacent the pipe section first end to a level substantially below the initial internal pressure; and
increasing an internal pressure within the pipe section at a location substantially adjacent the pipe section second end to a level substantially above the initial internal pressure.
11. A method as defined in claim 3, wherein cleaning the interior surface of the processing equipment is performed further using an other treatment liquid, said method further comprising:
introducing an other predetermined volume of the other treatment liquid into the pipe section at a location substantially adjacent the pipe section first end, the other predetermined volume being substantially smaller than the pipe section volume; and
circulating the other predetermined volume of the other treatment liquid through the pipe section by simultaneously
introducing steam into the pipe section; and
circulating the steam within the pipe section.
27. A method as defined in claim 2, comprising:
electrically isolating the pipe section;
charging with electrical charges of a first sign the atomized treatment liquid; and
charging with electrical charges of a second sign the pipe section, the second sign being opposite the first sign.
28. A method as defined in claim 2, wherein the processing equipment includes a vessel, said method comprising:
electrically isolating the vessel;
charging with electrical charges of a first sign the first treatment atomized liquid;
charging with electrical charges of a second sign the vessel, the second sign being opposite the first sign; and
introducing the charged atomized treatment liquid into the vessel.
38. A method as defined in claim 1, wherein the processing equipment includes a first pipe defining a first pipe first end and a first pipe second end, a vessel in fluid communication with the first pipe, and a second pipe in fluid communication with the vessel, the second pipe defining a second pipe first end and a second pipe second end, said method comprising:
introducing the predetermined volume of the treatment liquid into the first pipe at a location substantially adjacent the first pipe first end, the predetermined volume being substantially smaller than the first pipe volume;
circulating the predetermined volume of the treatment liquid through the first pipe from the first pipe first end to the first pipe second end by simultaneously
reducing the internal pressure within the first pipe at a location substantially adjacent the first pipe second end to a level substantially below the initial internal pressure; and
increasing the internal pressure within the first pipe at a location substantially adjacent the first pipe first end to a level substantially over the initial internal pressure; and
circulating the predetermined volume of the treatment liquid through the second pipe from the second pipe first end to the second pipe second end by simultaneously
reducing the internal pressure within the second pipe at a location substantially adjacent the second pipe second end to a level substantially below the initial internal pressure; and
increasing the internal pressure within the second pipe at a location substantially adjacent the second pipe first end to a level substantially over the initial internal pressure.
a treatment liquid feeder in fluid communication with said treatment liquid source and with the pipe section first end, said treatment liquid feeder being connected to said controller, said treatment liquid feeder being controllable by said controller to allow an introduction of a predetermined volume of the treatment liquid into the pipe section at a location substantially adjacent the pipe section first end, the predetermined volume being substantially smaller than the pipe section volume;
a low pressure source in fluid communication with the pipe section, said low pressure source being selectively operatable to produce a reduction in an internal pressure within the pipe section at a location substantially adjacent the pipe section second end to a level substantially below the initial internal pressure; and
a high pressure source in fluid communication with the pipe section, said high pressure source being selectively operatable to produce an increase in an internal pressure within the pipe section at a location substantially adjacent the pipe section first end to a level substantially above the initial internal pressure;
wherein the increase in the internal pressure within the pipe section at a location substantially adjacent the pipe section first end and the reduction in the internal pressure within the pipe section at a location substantially adjacent the pipe section second end are produced simultaneously to circulate the predetermined volume of the treatment liquid through the pipe section.
57. An apparatus as defined in claim 42, further comprising a routing valve assembly, said routing valve assembly being in fluid connection with said treatment liquid source and with said low and high pressure sources, said routing valve assembly further being in fluid communication with the pipe section first and second ends, said routing valve assembly being selectively switchable between a direct configuration and an inverted configuration, wherein
in said direct configuration said low and high pressure sources are selectively operatable to respectively produce a reduction in an internal pressure within the pipe section at a location substantially adjacent the pipe section second end to a level substantially below the initial internal pressure and an increase in an internal pressure within the pipe section at a location substantially adjacent the pipe section first end to a level substantially above the initial internal pressure; and
in said inverted configuration said low and high pressure sources are selectively operatable to respectively produce a reduction in an internal pressure within the pipe section at a location substantially adjacent the pipe section first end to a level substantially below the initial internal pressure and an increase in an internal pressure within the pipe section at a location substantially adjacent the pipe section second end to a level substantially above the initial internal pressure.
63. A method as defined in claim 1, further comprising:
introducing another predetermined volume of the treatment liquid into the pipe section at a location substantially adjacent the pipe section second end; and
circulating the other predetermined volume of the treatment liquid through the pipe section by simultaneously
64. A method as defined in claim 1 wherein the predetermined volume is being circulated through the pipe section of the processing equipment by further concurrently;
reducing the internal pressure there before within the pipe section at a location downstream the pipe section to a level substantially below a prevailing pressure and;
Increasing the internal pressure there after within the pipe section at the said location downstream the pipe section to a level above the prevailing pressure.
US11547655 2004-04-16 2005-04-18 Cleaning method and apparatus Active 2027-02-13 US8377222B2 (en)
GB0408651.8 2004-04-16
US20080210262A1 true true US20080210262A1 (en) 2008-09-04
US8377222B2 US8377222B2 (en) 2013-02-19
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