AN IMPROVED PROCESS AND APPARATUS FOR EXTRACTING BENZOLE FROM THE GASES EVOLVED IN SEALED OR CLOSED COKE OVENS
Year: 1884

page_text: PROVISIONAL
DIECIFICATION,
"
I, JOHN COATES of 106 Cannon Street, in the City of London, Gas Engineer do
hereby declare the nature of the said invention for AN IMPROVED PROCESS AND
APPARATUS FOR EXTRACTING BENZOLE FROM THE GASES EVOLVED IN SEALED OR
CLOSED COKE OVENS" to be as follows:-
Heretofore the gases evolved in sealed or closed coke ovens, after passing through
condensers for the extraction of tar, and through scrubbers saturated with
ammoniacal liquor, and clean water for the extraction of ammonia, have been
taken direct to the furnaces of the ovens to be utilized in heating the same.
.
The object of my invention is to extract the behzole from the aforesaid gases
after they bave passed through the said condensers and scrubbers, and before they
are passed on for combustion in the furnaces, and for this purpose I treat the said
gases in the following manner:-Firstly, After the gas has passed through the
aforesaid ammonia scrubber, I pass it through a washer or washers of rectangular
or other suitable form made perfectly gas tight, and containing a series of perforated
tubes or plates constructed so as to allow the gas to pass one or more times through
the washing liquid. This washer or these washers are preferably scaled with oil
having an affinity for benzole; Buch oil will extract the benzole as the gas passes
through it. Secondly-From the aforesaid washer or washers I pass the gas through
one or more scrubbers, of a size proportioned to the make of coke, filled with
boards, coke, pébbles, brushwood, bricks or any other suitable material, and oil,
which has an affinity for benzole, is pumped into the top of such scrubber; this
oil is distributed over the surfaces of the substances contained in the scrubber or
scrubbers by means of a distributing apparatus. The oil trickling down, and
meeting with the gas coming up, extracts therefrom the benzole which the before-
mentioned washer or washers may have failed to remove. The gas is then taken
on to the furnaces of the coke ovens to be burnt therein in the usual way, and the
oil containing the benzole is syphoned off and the benzōle distilled from it by any
known process.
+

page_text: CORTMEIE
SKECIFICATION,
"
I, JOHN COATES, of 106 Cannon Street, in tho City of London, Gas Engineer,
do hereby declare the nature of the said invention for AN IMPROVED PROCESS
AND APPARATUS FOR EXTRACTING BENZOLE FROM THE GASES EVOLVED IN SEALED
OR CLOSED COKE OVENS to be as follows:-
"
Heretofore the gases evolved in sealed or closed coke ovens, after passing through
condensers for the extraction of tar, and through scrubbers saturated with
ammoniacal liquor and clean water for the extraction of ammonia, have been
taken direct to the furnaces of the ovens to be utilized in heating the same.
The object of my invention is to extract the benzole from the aforesaid gases
after they have passed through the said condensers and scrubbers and before they
are passed on for combustion in the furnaces, and for this purpose I treat the said
gases in the following manner :-Firstly, after the gas has passed through the
aforesaid ammonia scrubber I pass it through a washer or washers of rectangular
or other suitable form made perfectly gas tight, and containing a series of perforated
tubes or plates constructed so as to allow the gas to pass one or more times through
the washing liquid. This washer, or these washers, are preferably sealed with oil
having an affinity for benzole; such oil will extract the benzole as the Gas passes
through it. Secondly, From the aforesaid washer or washers I pass the gas through
one or more scrubbers, of a size proportioned to the make of coke, filled with
boards, coke, pebbles, brushwood, tiles, or any other suitable material, and oil,
which has an affinity for benzole, is pumped into the top of such scrubbers; this
oil is distributed over the surfaces of the substances contained in the scrubber, or
scrubbers, by means of a distributing apparatus. The oil trickling down and
meeting with the gas coming up extracts therefrom the benzole which the before-
mentioned washer or washers may have failed to remove. The gas in then taken
on to the furnaces of the coke ovens to be burnt therein in the usual way, and the
oil containing the benzole is syphoned off and the benzole distilled from it by any
known process.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
First The process for extracting benzole from the gases evolved in sealed or
closed coke ovens, consisting in passing the gas after its passage through the
ammonia scrubber, through a washer or washers containing a series of perforated
tubes or plates constructed so as to allow the gas to pass one or more times through
a washing liquid having an affinity for benzole, and in then passing the gas through
one or more scrubbers filled with boards, coke, pebbles, brushwood, tiles, or other
suitable materials over which a liquid, having an affinity for benzole, is distributed,
as herein before described,

page_text: Second-The apparatus for extracting benzole from the gases evolved in sealed
or closed coke ovens, consisting of a washer or washers containing series of
perforated tubes or plates so constructed and arranged as to allow or cause the gas
to pass one or more times through the washing liquid, and of a scrubber or scrubbers
filled with boards, coke, pebbles, brush wood, tiles, or other suitable materials, and
provided with liquid distributing apparatus, the whole arranged, combined, and
operating as herein before described.