Abstract:
An energy-saving purification system of high-temperature organic liquids primarily uses the physical phenomenon “the smaller the ambient pressure, the lower the boiling point of a liquid” to fine-tune and control a negative-pressure generating device timely by a temperature-pressure correspondence control device to generate a corresponsive negative-pressure gas source, so as to continue boiling, vaporizing and dewatering a low-concentration high-temperature organic liquid without a continual heating process.

Description:
TECHNICAL FIELD 
       [0001]    The technical field relates to an energy-saving purification system of high-temperature organic liquids, and more particularly to the purification system applicable for increasing the concentration of organic liquids and purifying the organic liquids to a level in compliance with standard concentration. 
       BACKGROUND 
       [0002]    Various types of wastes such as household food wastes, industrial wastes, sewage sludge, agricultural wastes, animal excreta, etc have a rich content of organic substances which is the main cause of producing smelly garbage and disease vectors. Therefore, the practice of separating, recycling and processing organic wastes and other wastes not just overcomes the environmental pollution problem only, but also reduces the burden of incinerators and landfills. 
         [0003]    Since the traditional way of recycling organic wastes by the fermentation of the organic wastes to produce fertilizers not just takes much time for the process, breeds mosquitoes, produces smells and causes a secondary pollution to the environment only, but also fails to eliminate harmful elements including pests, bacteria, heavy metals and toxics in the organic wastes effectively, results in soil pollutions and harmful agricultural product, and jeopardizes our health through the food chain. In view of the aforementioned problems, the inventor of this disclosure conducted researches and developed an “Organic compound pryolysis flashover energy-saving regeneration treatment system” (Application Nos.: CN202741414U, TW 101121112, and US20140037507A1) capable of separating and processing an organic compound, and then producing liquid and solid regenerated organic compounds to be used as organic fertilizer or feed for livestock farming. Besides generating a green energy source effectively, this system also achieves the effects of recycling resources, purifying the environment, saving energy, reducing carbon, recycle and reuse. 
         [0004]    However, the inventor of this disclosure further discovered that the high-temperature concentration of an organic liquid separated and produced by the organic compound regeneration treatment system requires a purification process to meet with the requirement of the standard concentration of the liquid organic product. Now, if the traditional concentration method by heating (or heating method) is used to maintain the low-concentration organic liquid in a boiling status at constant temperature and pressure to vaporize and reduce the moisture in the organic liquid in order to increase the concentration of the liquid, such method will consume a large amount of energy sources and purification cost. Obviously, such cost-ineffective method violates the global trend of energy saving and carbon reduction. 
         [0005]    In view of the aforementioned problems, this disclosure discloses an energy-saving method for vaporizing the moisture of a low-concentration high-temperature organic liquid effectively and purifying the organic liquid to a liquid organic product in compliance with a standard concentration automatically. 
       SUMMARY 
       [0006]    Therefore, it is a primary objective of this disclosure to provide an energy-saving purification system of high-temperature organic liquids that primarily uses the physical phenomenon “the smaller the ambient pressure, the lower the boiling point of a liquid” and a temperature-pressure correspondence control device to detect a temperature change of the low-concentration high-temperature organic liquid to fine tune and control an ambient pressure in the purification space where the low-concentration high-temperature organic liquid is situated according to the temperature change, so as to continue boiling, vaporizing and dewatering the low-concentration high-temperature organic liquid without a continual heating process and automatically purify the liquid organic product to a level in compliance with the standard concentration. 
         [0007]    To overcome the problems of consuming too much energy and cost to continue the boiling and vaporization by heat as adopted in the prior art, a purification operation applicable for various organic substance processing systems used in different industries to separate and produce a low-concentration high-temperature organic liquid, the purification system further recycles and separates the vaporization heat discharged in the purification process into a waste heat solution and a waste heat gas, wherein the waste heat solution is provided for mixing water with the upstream materials to achieve the effect of saving water consumption, and the waste heat gas is provided for preheating the upstream material to achieve the energy saving and carbon reduction effects. 
         [0008]    To achieve the aforementioned and other objectives, this disclosure provides an energy-saving purification system of high-temperature organic liquids comprising: a closed pressure-regulated vaporization device, having a purification space formed therein for storing a fixed quantity of a low-concentration high-temperature organic liquid; a vaporization heat recycling device, communicated to a closed pressure-regulated vaporization device, for recycling and separating a vaporization heat discharged in a low-concentration high-temperature organic liquid purification process into a waste heat solution and a waste heat gas; a negative-pressure generating device, communicated to the vaporization heat recycling device, and further communicated to the closed pressure-regulated vaporization device through the vaporization heat recycling device, for receiving a fine-tune control to generate a negative-pressure gas source to be supplied to the purification space of the closed pressure-regulated vaporization device to perform a pressure reduction of an ambient pressure; and a temperature-pressure correspondence control device, for detecting a temperature change of the low-concentration high-temperature organic liquid and an ambient pressure of the purification space inside the closed pressure-regulated vaporization device and collecting, computing and processing the temperature change and the ambient pressure to fine-tune and control a negative-pressure gas source generated by the negative-pressure generating device, so as to control the ambient pressure of the purification space inside the closed pressure-regulated vaporization device and driving the low-concentration high-temperature organic liquid to maintain its boiling, vaporizing and dewatering without heating in the vaporizing, energy consuming and cooling statuses. 
         [0009]    It is noteworthy that the energy-saving purification system of high-temperature organic liquids of this disclosure may be used together with any system of producing liquid organic products in different industries, and the basic condition is that the low-concentration organic liquid entering into the closed pressure-regulated vaporization device is situated at a high-temperature status (which is the low-concentration high-temperature organic liquid). 
         [0010]    For independent operations, this energy-saving purification system further comprises: an organic material preparation unit for mixing water with an organic material and preheating the organic material; and an organic substance processing unit coupled to a downstream end of the organic material preparation unit for heating, steaming and processing the organic material, and the upstream end of the organic substance processing unit is coupled to the closed pressure-regulated vaporization device, so that the low-concentration organic liquid entering into the closed pressure-regulated vaporization device is situated at a high-temperature status, so as to form the low-concentration high-temperature organic liquid. 
         [0011]    The aforementioned system can overcome the problems of consuming too much energy and cost to continue the boiling and vaporization by heat as adopted in the prior art, and the system is applicable for a purification operation of various organic substance processing systems used in different industries to separate and produce a low-concentration high-temperature organic liquid. Obviously, the system has a very high industrial value. In addition, the vaporization heat discharged in the purification process can be recycled and separated into a waste heat solution and a waste heat solution, and the waste heat solution is provided for mixing water with the upstream materials, and the waste heat gas is provided for preheating the upstream material, so as to achieve the energy-saving and carbon reduction effects. 
         [0012]    Compared with the prior art, the purification system of this disclosure uses the physical phenomenon “the smaller the ambient pressure, the lower the boiling point of a liquid” to fine-tune and control a negative-pressure generating device timely by a temperature-pressure correspondence control device to generate a corresponsive negative-pressure gas source, so as to continue boiling, vaporizing and dewatering a low-concentration high-temperature organic liquid without continual heating in the vaporizing, energy consuming and cooling statuses. The purification system of this disclosure automatically purifies the liquid organic products to a level in compliance with the standard concentration and skips the conventional heating process used for the continual boiling and vaporization so as to reduce the energy consumption and cost. Obviously, such purification system has a very high industrial value. In addition, the purification system of this disclosure recycles and separates the vaporization heat discharged in the purification process into a waste heat solution and a waste heat gas to be supplied to the upstream organic material preparation unit for the purposes of water mixing and preheating, so as to achieve the energy saving and environmental protection effects. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0013]      FIG. 1  is a schematic view of an exemplary embodiment of a purification system of this disclosure. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0014]    The technical content of this disclosure will become apparent with the detailed description of preferred embodiments and the illustration of related drawings as follows. 
         [0015]    With reference to  FIG. 1  for an energy-saving purification system of high-temperature organic liquids of this disclosure, the purification system comprises: a closed pressure-regulated vaporization device  10 , a vaporization heat recycling device  20 , a negative-pressure generating device  30 , and a temperature-pressure correspondence control device  40 . 
         [0016]    The closed pressure-regulated vaporization device  10  has a purification space  11  formed therein and provided for storing a fixed quantity of low-concentration high-temperature organic liquid  12 . In an embodiment, the closed pressure-regulated vaporization device  10  further comprises: a temperature detector  13  for detecting a temperature change of the low-concentration high-temperature organic liquid  12  in the closed pressure-regulated vaporization device  10 , a pressure detector  14  for detecting an ambient pressure of the purification space  11  in the closed pressure-regulated vaporization device  10 , a liquid level detector  15  for detecting a change of liquid level of the low-concentration high-temperature organic liquid  12  in the closed pressure-regulated vaporization device  10 , a finished product extractor  16 , and a finished product storage tank  18  for storing a liquid organic product  17 ; wherein, the liquid level detector  15  has a detection value used as a basis for controlling the purification concentration of the low-concentration high-temperature organic liquid  12 ; and if the liquid level of the low-concentration high-temperature organic liquid  12  drops gradually to a set target due to its boiling, vaporization and dewatering, the finished product extractor  16  will transmit the purified liquid organic product  17  to the finished product storage tank  18  for storage. 
         [0017]    The vaporization heat recycling device  20  is communicated to the closed pressure-regulated vaporization device  10  and provided for recycling and separating the vaporization heat discharged in the purification process of the low-concentration high-temperature organic liquid  12  into a waste heat solution and a waste heat gas. In an embodiment, the vaporization heat recycling device  20  further comprises: one or more vacuuming pipes  21 , a waste heat solution extractor  22 , and a waste heat solution conveying pipe  23 . Wherein, the waste heat solution extractor  22  is provided for transmitting the waste heat solution recycled and separated by the vaporization heat recycling device  20  to an organic material preparation unit  60  (which will be described later) through the waste heat solution conveying pipe  23  and used for mixing water and recycling raw materials. 
         [0018]    The negative-pressure generating device  30  is communicated to the vaporization heat recycling device  20  and further communicated to the closed pressure-regulated vaporization device  10  through the vacuuming pipe  21  of the vaporization heat recycling device  20  for receiving a fine-tune control to generate a negative-pressure gas source to be supplied into the purification space  11  of closed pressure-regulated vaporization device  10  to perform a pressure reduction of the ambient pressure. In an embodiment, the negative-pressure generating device  30  further comprises: one or more vacuum pumps  31 , one or more sealing liquid coolers  32 , and one or more waste heat gas delivery pipes  33 . Wherein, the vacuum pump  31  may be an inverter type pump or a fixed speed type pump, and the sealing liquid cooler  32  supplies a low-temperature sealing liquid to the vacuum pumps  31  to enhance the operation efficiency and service life of the negative-pressure generating device  30 ; and the negative-pressure generating device  30  draws and discharges the waste heat gas from the vaporization heat recycling device  20  into an organic material preparation unit  60  (which will be described later) through the waste heat gas delivery pipe  33  and the waste heat gas is used for preheating and recycling the raw materials. 
         [0019]    The temperature-pressure correspondence control device  40  is provided for accurately detecting a temperature change of the low-concentration high-temperature organic liquid  12 , and an ambient pressure of the purification space  11  inside the closed pressure-regulated vaporization device  10 , and collecting, computing and processing the temperature change and the ambient pressure to fine tune and control the negative-pressure gas source generated by the negative-pressure generating device  30 , so as to control the ambient pressure of the purification space  11  inside the closed pressure-regulated vaporization device  10  and driving the low-concentration high-temperature organic liquid  12  to maintain its boiling, vaporizing and dewatering without heating in the vaporizing, energy consuming and cooling statuses. In an embodiment, the temperature-pressure correspondence control device  40  further comprises an instrumental electric control panel  41 , a remote monitoring device  42 , and a processor  43 , and the processor  43  may be a programmable logic controller (PLC) or a microprocessor (CPU or MCU). 
         [0020]    In an embodiment, the temperature detector  13  and the pressure detector  14  installed in the closed pressure-regulated vaporization device  10  are electrically coupled to the processor  43  of the temperature-pressure correspondence control device  40 , and the processor  43  is provided for collecting, computing and processing a temperature value of the low-concentration high-temperature organic liquid  12  detected by the temperature detector  13 , and an ambient pressure value of the purification space  11  where the low-concentration high-temperature organic liquid  12  is situated and detected synchronously by the pressure detector  14 , and then automatically transmitting a message to an instrumental electric control panel  41  and/or a remote monitoring device  42  to fine tune and control a negative-pressure gas source generated by the negative-pressure generating device  30 , so as to control the ambient pressure of the purification space  11  inside the closed pressure-regulated vaporization device  10 , and driving the low-concentration high-temperature organic liquid  12  to continue its boiling, vaporization and dewatering without heating in the vaporizing, power consuming, and cooling statuses. 
         [0021]    It is noteworthy that the energy-saving purification system may be used together with any system for producing liquid organic products. The basic condition is that the low-concentration organic liquid entering into the closed pressure-regulated vaporization device  10  is situated at a high-temperature status, so that the low-concentration high-temperature organic liquid  12  stored in the closed pressure-regulated vaporization device  10  can be produced. 
         [0022]    For independent operations, the energy-saving system of this embodiment comprises the closed pressure-regulated vaporization device  10 , the vaporization heat recycling device  20 , the negative-pressure generating device  30  and the temperature-pressure correspondence control device  40  and further comprises an organic material preparation unit  60  for mixing water with an organic material  50  and preheating the organic material  50 , and an organic substance processing unit  70  coupled to a downstream end of the organic material preparation unit  60  for heating, steaming and processing the organic material  50 , and a downstream end of the organic substance processing unit  70  is coupled to the closed pressure-regulated vaporization device  10 , so that the low-concentration organic liquid entering into the closed pressure-regulated vaporization device  10  is situated at a high-temperature status. In other words, the low-concentration high-temperature organic liquid  12  stored in the closed pressure-regulated vaporization device  10  can be produced.