CN109603513B - Glue residue waste gas treatment system - Google Patents
Glue residue waste gas treatment system Download PDFInfo
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- CN109603513B CN109603513B CN201811547648.5A CN201811547648A CN109603513B CN 109603513 B CN109603513 B CN 109603513B CN 201811547648 A CN201811547648 A CN 201811547648A CN 109603513 B CN109603513 B CN 109603513B
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- 239000002912 waste gas Substances 0.000 title claims abstract description 135
- 239000003292 glue Substances 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 240
- 238000004880 explosion Methods 0.000 claims abstract description 191
- 238000013022 venting Methods 0.000 claims abstract description 183
- 238000010521 absorption reaction Methods 0.000 claims abstract description 46
- 238000009833 condensation Methods 0.000 claims abstract description 37
- 230000005494 condensation Effects 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000009826 distribution Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 53
- 238000005192 partition Methods 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 10
- 238000005422 blasting Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 15
- 239000002699 waste material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000010865 sewage Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000010815 organic waste Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
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- 238000009776 industrial production Methods 0.000 description 1
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- 239000004014 plasticizer Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a glue residue waste gas treatment system, which comprises a gas collecting module, a condensation pretreatment module and a waste gas treatment module, wherein the gas collecting module comprises an explosion venting and gas collecting cover, the explosion venting and gas collecting cover comprises a normal gas collecting part and a negative pressure explosion venting part, the inner space of the normal gas collecting part is a gas collecting and gas discharging area, and the inner space of the negative pressure explosion venting part is a negative pressure explosion venting area; a normally closed explosion venting valve is arranged between the gas collection and exhaust area and the negative pressure explosion venting area; the condensing module comprises a multifunctional absorption condenser, an inner cavity of the multifunctional absorption condenser forms a condensing chamber, an exhaust gas inlet and a gas distribution pipe are arranged at the lower end of the condensing chamber, and a condenser exhaust port is arranged at the upper end of the condensing chamber; the exhaust gas treatment module comprises an exhaust gas treatment device, an induced draft device and a chimney. The glue residue waste gas treatment system can ensure the safety of the whole waste gas collection system, and can condense and absorb waste gas before the waste gas is subjected to centralized treatment, so that the waste gas treatment effect is improved.
Description
Technical Field
The invention relates to an equipment waste gas treatment system, in particular to a glue residue waste gas treatment system.
Background
In the process of industrial production and treatment such as waste plastic recycling and regeneration, garbage incineration and the like, waste gas is generated, and in order to avoid pollution to the atmosphere caused by direct discharge of the waste plastic, the waste gas needs to be collected and treated by a waste gas collecting device and a waste gas treating device in sequence before the waste plastic is discharged.
For example, when the "heating evaporation dehydration+granulation" is performed on the cement, exhaust gas is generated, and the exhaust gas needs to be collected and transported to an exhaust gas treatment device for treatment. Under normal conditions, the exhaust gas collecting device can smoothly and effectively collect exhaust gas under the suction effect of the jet aspirator, but when high-temperature high-pressure gas meets the pressure reduction opportunities of an exhaust port, a discharge port and the like, the tension of molten plastics is overcome, when the exhaust gas is discharged in an explosive manner (commonly called as blasting), the amount of the exhaust gas after pressure relief is seriously more than the suction amount of the jet aspirator, positive-pressure exhaust gas instantaneously appears in the space between the exhaust port of the granulator and the jet aspirator, and the exhaust gas is sprayed out in places with poor tightness such as an inspection port of the gas collecting cover, so that the environment is polluted, and meanwhile, the threat of personal injury to operators is formed. And the generated exhaust gas is characterized by the following characteristics: (1) a temperature of about 100 ℃; (2) vapors mixed with volatiles such as oil; (3) carrying acidic substances, organic waste gases, etc.
The case is as follows:
1. In the regeneration process of the waste plastic or waste plastic film, because the waste plastic or waste plastic film is rich in pollutants such as moisture, grease and the like, the waste gas generated by melting and heating (the temperature is less than or equal to 300 ℃) is rich in high-temperature vapor, oil vapor, organic volatile matters and the like; when the waste plastics or waste plastic films contain polyvinyl chloride components, the temperature during melting is not less than 200 ℃, so that the generated waste gases also contain chlorine gas, plasticizer gas and the like.
2. In the process of burning industrial waste residues by using a boiler, most of hearth temperatures are 300-500 ℃; a large amount of high-temperature vapor, organic waste gas, etc. are generated; industrial waste is often mixed with waste textiles, artificial leather, wood chips, substances with greasy dirt, water and the like; in the incineration process, more high-temperature acidic water vapor, organic waste gas and the like, and even dioxin poison gas can be generated.
The methods for treating the exhaust gas generally include: high temperature incineration, bio-membrane, activated carbon adsorption, etc.; especially, the biomembrane absorption method needs to pretreat the waste gas such as high temperature steam, oil steam, acid gas and the like before treating the waste gas, namely, cooling to 15-30 ℃; the existing condenser only can reduce the temperature, part of harmful substances in the gas cannot be removed, and the cooling effect is still to be improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a glue residue waste gas treatment system which can not only release and explode waste gas during blasting, but also ensure the safety of the whole waste gas collecting system; and simultaneously, the waste gas can be subjected to condensation treatment before being subjected to concentrated treatment, and partial harmful substances in the waste gas can be removed while the temperature of the waste gas is reduced, so that the waste gas treatment effect is improved.
The technical scheme for solving the technical problems is as follows:
The glue residue waste gas treatment system comprises a gas collecting module, a condensation pretreatment module and a waste gas treatment module, wherein the gas collecting module comprises an explosion venting and gas collecting cover, the explosion venting and gas collecting cover comprises a normal gas collecting part and a negative pressure explosion venting part, the inner space of the normal gas collecting part is a gas collecting and gas discharging area, and the inner space of the negative pressure explosion venting part is a negative pressure explosion venting area; a gas collecting hood exhaust port is arranged on the hood wall of the gas collecting and exhausting area, the gas collecting hood exhaust port is connected with the condensation processing module through a first gas transmission main pipe, and a jet aspirator is arranged on the first gas transmission main pipe; the cover wall of the negative pressure explosion venting area is provided with an explosion venting port which is connected with the first gas transmission main pipe through a gas transmission branch pipe; a normally closed explosion venting valve is arranged between the gas collection and exhaust area and the negative pressure explosion venting area;
The condensing module comprises a multifunctional absorption condenser, an inner cavity of the multifunctional absorption condenser forms a condensing chamber, the lower end of the condensing chamber is provided with an exhaust gas inlet and a gas distribution pipe which are connected with the first gas transmission main pipe, and the upper end of the condensing chamber is provided with a condenser exhaust port; a cooling coil pipe for cooling is arranged in the condensation chamber, a solution supplementing inlet is arranged on the multifunctional absorption condenser, and the solution in the condensation chamber and the waste gas to be treated are subjected to contact condensation and gas washing treatment;
the waste gas treatment module comprises a waste gas treatment device, an induced air device and a chimney, wherein the waste gas treatment device comprises a box body and a waste gas treatment assembly arranged in the box body, a box body air inlet and a box body air outlet are formed in the box body, the box body air inlet is connected with the condenser air outlet through a second air conveying main pipe, the box body air outlet is connected with the chimney through an exhaust pipe, and the induced air device is arranged on the exhaust pipe.
Preferably, the gas collecting and exhausting area and the negative pressure explosion venting area are separated by a partition plate, the partition plate is horizontally arranged, the area below the partition plate is the gas collecting and exhausting area, the area above the partition plate is the negative pressure explosion venting area, and the explosion venting valve is arranged on the partition plate. When the explosion venting valve is in an explosion venting state, the waste gas moves upwards through the explosion venting valve to enter the negative pressure explosion venting area, and then enters the first gas transmission main pipe through the gas transmission branch pipe, so that the waste gas explosion venting task is realized. The advantage of setting up like this is that when the atmospheric pressure in the exhaust gas collection district does not reach and lets out the explosion value, let out the valve gap on the explosion valve and can close the valve at self gravity, and when the atmospheric pressure in the exhaust gas collection district reaches and let out the explosion value, let out the valve gap on the explosion valve and upwards move under the effect of waste gas and realize letting out the explosion task to waste gas to can realize automatically regulated according to the atmospheric pressure value.
Preferably, the gas collecting and exhausting area and the negative pressure explosion venting area are separated by a partition plate, the partition plate is vertically arranged, the area on one side of the partition plate is the gas collecting and exhausting area, the area on the other side of the partition plate is the negative pressure explosion venting area, and the explosion venting valve is arranged on the partition plate. When the explosion venting valve is in an explosion venting state, the waste gas horizontally moves through the explosion venting valve to enter the negative pressure explosion venting area, and then enters the first gas transmission main pipe through the gas transmission branch pipe, so that an explosion venting task of the waste gas is realized.
Preferably, the gas collecting and exhausting area and the negative pressure explosion venting area are arranged in mutually independent cover bodies, the cover bodies corresponding to the gas collecting and exhausting area and the negative pressure explosion venting area are connected through a large-caliber pipeline, and the explosion venting valve is arranged in the large-caliber pipeline. When the explosion venting valve is in an explosion venting state, waste gas enters the cover body corresponding to the negative pressure explosion venting area through a large-caliber pipeline and then enters the first gas transmission main pipe through the gas transmission branch pipe, so that the task of explosion venting of the waste gas is realized.
Preferably, a plurality of explosion venting valves are uniformly arranged on the partition plate. The purpose of the arrangement is that because the exhaust gas contains oil vapor, blocking adhesion phenomenon is easy to occur at the explosion venting valves, and when one or a plurality of the explosion venting valves are adhered or failed and are not opened by arranging the explosion venting valves, the explosion venting valve can play a role in explosion venting as long as one of the explosion venting valves is normally opened, so that the reliability and the safety of explosion venting can be greatly improved; on the other hand, when the phenomenon is generated in the concentrated way of the waste gas, a plurality of uniformly distributed explosion venting valves can simultaneously perform explosion venting work, so that the explosion venting device has the advantages of stronger explosion venting capability, faster explosion venting speed and better explosion venting effect.
Preferably, the explosion venting valve is of a dead-weight upper cover opening structure, and comprises a valve body, a valve port, a valve cover arranged above the valve port and a guide piece used for guiding the up-and-down movement of the valve cover, wherein when the air pressure in the valve body of the explosion venting valve does not reach the explosion venting value, the valve cover seals the valve port under the action of gravity; when the air pressure in the explosion venting valve body reaches the explosion venting value, the valve cover moves upwards under the action of waste gas to open the valve opening, so that the waste gas explosion venting task is realized.
Preferably, the explosion venting valve is of a hinged structure and comprises a valve body, a valve port and a valve cover, wherein the valve cover is arranged on the partition plate, and the valve cover is hinged with the partition plate. When the air pressure in the explosion venting valve body does not reach the explosion venting value, the valve cover is pressed on the valve port under the action of gravity to seal the valve port; when the air pressure in the explosion venting valve body reaches the explosion venting value, the valve cover moves upwards under the action of waste gas to open the valve port, so that the waste gas explosion venting task is realized.
Preferably, the multifunctional absorption condenser is provided with an overflow port, the solution is conveyed to the condensing chamber by a pump, the first gas conveying main pipe of the solution is provided with a jet aspirator for sucking and mixing waste gas to be treated, the tail end of the first gas conveying main pipe of the solution is connected with a gas distribution pipe in the condensing chamber, and the gas inlet of the gas distribution pipe forms the solution supplementing inlet. During operation, the solution is accelerated by a pump, and the waste gas to be treated is sucked and mixed by a jet aspirator; and enters the condenser through a gas distribution pipe at the bottom of the condenser.
In a preferred scheme of the invention, a solution supply pipe for spraying the solution is arranged at the upper part of the condensing chamber, and the solution sprayed by the solution supply pipe is dispersed in the tank and fully and directly contacts with the waste gas to be treated from bottom to top for cooling and scrubbing.
Preferably, the device further comprises an adjusting water tank, wherein a concentration online detection and allocation system is arranged in the adjusting water tank and comprises a concentration online detection probe, a controller and a dispensing device, the concentration online detection probe is arranged in the adjusting water tank and is connected with a signal input end of the controller, and the dispensing device is connected with a signal output end of the controller. The aim of the arrangement is that the alkali ions in the treatment fluid are continuously consumed due to the neutralization reaction with the treatment fluid when the waste gas containing acidic substances is subjected to contact treatment, and after the online detection and allocation system is arranged, the concentration online detection probe transmits the concentration data to the controller in real time, and then the controller transmits the concentration data to the medicine allocation device, so that the medicine allocation device (consisting of a medicine allocation box or a medicine allocation groove) can supplement the concentration requirement for the solution for adjusting water according to the pH value measured by the pH value detection device, so that the ideal absorption treatment effect is achieved.
The working principle of the invention is as follows:
During operation, the explosion venting gas collecting hood is used for completing the collection task of waste gas, the waste gas is conveyed into the condenser through the first gas conveying main pipe to be subjected to condensation cooling and pre-absorption treatment, after the treatment is completed, the waste gas is conveyed into the waste gas treatment device through the second gas conveying main pipe to be subjected to biological membrane absorption treatment, the waste gas after the biological membrane absorption treatment is standard gas, and the standard gas is finally discharged into the air through the chimney.
The explosion relief valve can release explosion to waste gas during blasting, so that the safety of the whole waste gas collecting system is ensured. Specifically, when normal exhaust, the explosion venting valve is in a closed state, under the suction effect of the jet aspirator, waste gas firstly enters the gas collecting and exhausting area from the bottom of the explosion venting gas collecting hood, then enters the first gas transmission main pipe through the gas collecting hood exhaust port, and finally enters the multifunctional absorption condenser for condensation and absorption treatment of the waste gas under the transmission of the first gas transmission main pipe. When the blasting appears, the gas collecting and exhausting area is pressurized instantly, the explosion venting valve is opened under the pressure effect, and the waste gas which is not sucked by the jet aspirator is buffered in the negative pressure explosion venting area, so that the gas pressure in the gas collecting and exhausting area is reduced instantly, and the explosion venting effect is achieved; and then, the gas waste gas entering the gas collecting and exhausting area enters the first gas transmission main pipe through the gas transmission branch pipe under the suction effect of the jet aspirator, and enters the multifunctional absorption condenser for condensation and absorption treatment of the waste gas under the transmission of the first gas transmission main pipe.
The multifunctional absorption condenser can be used for condensing waste gas, reducing the temperature of the waste gas and removing part of harmful substances in the waste gas. Specifically, during operation, high-temperature waste gas is in direct contact with low-temperature solution and is fully mixed, and heat of the waste gas and entrained substances in the process are transferred into the solution through a gas-liquid interface; the refrigerant coil takes heat away in a non-contact mode; the pollutants transferred into the solution are removed by entering a sewage treatment system, so that the dual effects of temperature reduction and harmful substance treatment are realized.
The exhaust treatment module is capable of completing the collection, treatment and emission tasks of the exhaust. Specifically, the waste gas subjected to the cold coagulation pretreatment enters the waste gas treatment device through the second gas transmission main pipe for treatment; after finishing the treatment task, the waste water is conveyed into the atmosphere through an exhaust pipe and a chimney; the air inducing device in the exhaust gas treatment system can guide the flow direction of the exhaust gas, so that the exhaust gas is promoted to flow along the direction of the second gas transmission main pipe, the exhaust gas treatment device, the exhaust pipe and the chimney, and the collection, treatment and emission tasks of the exhaust gas can be smoothly completed.
Compared with the prior art, the invention has the following beneficial effects:
1. The rubber residue waste gas treatment system can collect and treat waste gas, wherein when the waste gas is collected, the waste gas can be timely and rapidly blasted when blasting occurs, so that pollution to the environment caused by spraying the waste gas from places with poor tightness such as a gas collecting hood inspection port during blasting can be avoided; on the other hand, the threat of personal injury to operators caused by blasting can be prevented, so that the safety of the whole waste gas collecting system is ensured.
2. According to the rubber residue waste gas treatment system, waste gas entering the negative pressure explosion venting area can be drained into the first gas transmission main pipe through the gas transmission branch pipe while explosion venting is carried out on the waste gas, and the waste gas is collected and treated in a concentrated mode, so that pollution to the environment is reduced, and therefore the gas collection effect is good.
3. According to the rubber residue waste gas treatment system, automatic explosion venting can be realized according to the air pressure in the gas collecting and exhausting area, namely, when the air pressure in the gas collecting cover exceeds a set range, the explosion venting valve is automatically opened under the action of the air pressure to realize explosion venting, and when the air pressure in the gas collecting and exhausting area is restored to be within a normal air pressure range, the explosion venting valve can be automatically closed, so that automatic switching between opening and closing of an explosion venting function can be realized, and the working effect is good.
4. Before the waste gas is sent to the centralized treatment module for treatment, the waste gas is firstly conveyed to the condensation module for condensation treatment, and in the treatment, the multifunctional absorption condenser definitely adopts a treatment mode that the solution is in direct contact with the waste gas, so that the cooling and condensation effects can be improved, and the solution can be directly subjected to chemical reaction with harmful substances in the waste gas, so that part of the harmful substances in the waste gas are removed, and the load of a subsequent treatment process is reduced.
5. According to the multifunctional absorption condenser in the glue residue waste gas treatment system, when high-temperature waste gas with different characteristics is condensed, different types of solutions with different concentrations can be prepared, so that the dissolution and absorption of harmful substances in the waste gas are realized, the pretreatment of the waste gas is realized, and the problem that the waste gas is easy to escape and difficult to collect is solved. The sewage is easy to collect; the environment is not polluted by adopting proper treatment means.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a glue-residue exhaust gas treatment system according to the present invention, wherein arrows indicate the flow direction of exhaust gas or solution.
Fig. 2 is a schematic structural view of an explosion venting and gas collecting hood in the cement slag waste gas treatment system shown in fig. 1.
Fig. 3 is a view in the direction A-A of fig. 2.
Fig. 4 is a schematic structural view of an explosion venting valve in the explosion venting and collecting hood shown in fig. 2, wherein the flow direction of arrow exhaust gas is shown.
FIG. 5 is a schematic view showing the construction of the multi-functional absorption condenser 5 in the cement exhaust gas treatment system shown in FIG. 1; in which the arrow is the flow direction of the exhaust gases.
Fig. 6 is a schematic diagram of the distribution structure of the gas collecting and exhausting area and the negative pressure explosion venting area in the explosion venting and collecting hood according to embodiment 2, in which the flow direction of the arrow waste gas is shown.
Fig. 7 is a schematic diagram of the distribution structure of the gas collecting and exhausting area and the negative pressure explosion venting area in the explosion venting and collecting hood according to embodiment 3, wherein the flow direction of the arrow waste gas is shown.
Fig. 8 is a schematic structural diagram of the explosion venting valve according to embodiment 4, in which the flow direction of the arrow exhaust gas is shown.
Fig. 9 is a schematic structural diagram of a explosion venting valve according to embodiment 5, in which the flow direction of the arrow exhaust gas is shown.
Fig. 10 is a schematic diagram of the construction of the multifunctional absorption condenser 5 according to embodiment 6 of fig. 1, in which the flow direction of the arrow exhaust gas is shown.
The explosion venting and gas collecting hood 1, the normal gas collecting part 1-1, the negative pressure explosion venting part 1-2, the gas collecting hood exhaust port 1-3, the explosion venting port 1-4, the explosion venting valve 1-5, the valve body 1-51, the valve port 1-52, the valve cover 1-53, the partition plate 1-6, the granulator 2, the first gas transmission main pipe 3, the jet aspirator 3-1, the gas transmission branch pipe 4, the multifunctional absorption condenser 5, the waste gas inlet 5-1, the multifunctional absorption condenser exhaust port 5-2, the overflow port 5-3, the pump 5-4, the solution supply pipe 5-5, the gas distribution pipe 6, the cooling coil 7, the adjusting water tank 8, the water pipe 8-1, the sewage outlet 8-2, the dispensing device 9, the waste gas treatment device 10, the induced draft device 11, the chimney 12, the exhaust pipe 13, the partition plate 14, the online detection probe 15 and the overflow pipe 16.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1, the system for treating the gumming residue waste gas comprises a gas collecting module, a condensation pretreatment module for condensing and absorbing the collected waste gas, and a waste gas treatment module for performing biological absorption treatment on the waste gas after the condensation pretreatment.
Referring to fig. 1 and 2, the gas collecting module comprises an explosion venting and collecting hood 1, wherein the explosion venting and collecting hood 1 is arranged above an exhaust port of a granulator 2 and comprises a normal gas collecting part 1-1 and a negative pressure explosion venting part 1-2, the internal space of the normal gas collecting part 1-1 is a gas collecting and exhausting area, and the internal space of the negative pressure explosion venting part 1-2 is a negative pressure explosion venting area; the gas collecting hood exhaust port 1-3 is arranged on the hood wall of the gas collecting exhaust area, the gas collecting hood exhaust port 1-3 is connected with the condensation processing module through the first gas transmission main pipe 3, and the first gas transmission main pipe 3 is provided with the jet aspirator 3-1; the cover wall of the negative pressure explosion venting area is provided with an explosion venting port 1-4, and the explosion venting port 1-4 is connected with the first gas transmission main pipe 3 through a gas transmission branch pipe 4; and a normally closed explosion venting valve 1-5 is arranged between the gas collection and exhaust area and the negative pressure explosion venting area.
Referring to fig. 2 and 3, specifically, the gas collecting and exhausting area and the negative pressure explosion venting area in the explosion venting and collecting hood 1 are separated by a partition plate 1-6, the partition plate 1-6 is horizontally arranged, the area below the partition plate 1-6 is the gas collecting and exhausting area, the area above the partition plate 1-6 is the negative pressure explosion venting area, and the explosion venting valve 1-5 is arranged on the partition plate 1-6. When the explosion venting valve 1-5 is in an explosion venting state, the waste gas moves upwards through the explosion venting valve 1-5 to enter a negative pressure explosion venting area, and then enters the first gas transmission main pipe 3 through the gas transmission branch pipe 4, so that an explosion venting task of the waste gas is realized.
Referring to fig. 4, the explosion venting valve 1-5 is in a dead weight open top structure, the explosion venting valve 1-5 comprises a valve body 1-51, a valve port 1-52, a valve cover 1-53 arranged above the valve port 1-52 and a guide piece for guiding the up-and-down movement of the valve cover 1-53, when the air pressure in the valve body 1-51 of the explosion venting valve 1-5 does not reach the explosion venting value, the valve cover 1-53 seals the valve port 1-52 under the action of gravity; when the air pressure in the valve body 1-51 of the explosion venting valve 1-5 reaches the explosion venting value, the valve cover 1-53 moves upwards under the action of waste gas to open the valve port 1-52, so that the task of waste gas explosion venting is realized, and automatic adjustment can be realized according to the air pressure value.
Referring to fig. 2 and 3, the partition plate 1-6 is uniformly provided with a plurality of explosion venting valves 1-5. The purpose of this arrangement is that since the exhaust gas contains oil vapor, blocking and sticking phenomena are likely to occur at the explosion venting valves 1-5, and when one or more of the explosion venting valves 1-5 are stuck or failed and not opened by the arrangement of the plurality of explosion venting valves 1-5, the explosion venting effect can be achieved as long as one of the explosion venting valves 1-5 is normally opened, so that the reliability and safety of explosion venting can be greatly improved; on the other hand, when the phenomenon of concentrated exhaust gas occurs, the explosion venting valves 1-5 which are uniformly distributed can simultaneously perform explosion venting operation, so that the explosion venting device has the advantages of stronger explosion venting capability, faster explosion venting speed and better explosion venting effect.
Referring to fig. 1 and 5, the condensation module includes a multifunctional absorption condenser 5, an inner cavity of the multifunctional absorption condenser 5 forms a condensation chamber, a waste gas inlet 5-1 connected with the first gas transmission main pipe 3 and a gas distribution pipe 6 are arranged at the lower end of the condensation chamber, the gas entering the condensation chamber can be uniformly dispersed by the gas distribution pipe 6, so that the condensation module is convenient for fully contacting with solution in the condensation chamber, and a gas outlet 5-2 of the multifunctional absorption condenser 5 is arranged at the upper end of the condensation chamber; the cooling coil 7 for cooling is arranged in the condensing chamber, and the multifunctional absorption condenser 5 is provided with a solution supplementing inlet (because the solution and the waste gas are mixed by the jet aspirator 3-1 in the embodiment, the solution supplementing inlet and the waste gas inlet 5-1 are the same inlet), and the solution in the condensing chamber and the waste gas to be treated are subjected to contact condensation and gas washing treatment.
Referring to fig. 1 and 5, the multifunctional absorption condenser 5 is provided with an overflow port 5-3, the overflow port 5-3 is connected with a regulating water tank 8 through an overflow pipe 16, the regulating water tank 8 is provided with a sewage water outlet 8-2 used for being connected with a sewage treatment device, a solution is conveyed from the regulating water tank 8 to a condensing chamber through a water conveying pipe 8-1 by a pump 5-4, a jet aspirator 3-1 used for sucking and mixing waste gas to be treated is arranged on a first gas conveying main pipe 3 of the solution, the tail end of the first gas conveying main pipe 3 of the solution is connected with a gas distribution pipe 6 in the condensing chamber, and the gas inlet of the gas distribution pipe 6 forms a solution supplementing inlet. During operation, the solution is accelerated by the pump 5-4, and the waste gas to be treated is sucked and mixed by the jet aspirator 3-1; and enters the multifunctional absorption condenser 5 through a gas distribution pipe 6 at the bottom of the multifunctional absorption condenser 5.
Referring to fig. 1 and 5, a partition plate 14 and a concentration online detection and adjustment system are arranged in the adjusting water tank 8, the concentration online detection and adjustment system comprises a concentration online detection probe 15, a controller and a dispensing device 9, wherein the concentration online detection probe 15 is arranged in the adjusting water tank 8 and is connected with a signal input end of the controller, and the dispensing device 9 is connected with a signal output end of the controller. The purpose of this arrangement is that, because neutralization reaction occurs with the treatment liquid when the waste gas containing acidic substances is subjected to contact treatment, alkali ions in the treatment liquid are continuously consumed, and after the above-mentioned online detection and distribution system is arranged, the concentration online detection probe 15 transmits concentration data to the controller in real time, and then the controller transmits the concentration data to the dispensing device 9, so that the dispensing device 9 (composed of a dispensing box or a dispensing tank) can supplement the concentration requirement of the solution of the regulated water according to the pH value measured by the pH value detection device, so as to achieve the ideal absorption treatment effect.
Referring to fig. 1, the exhaust gas treatment module includes an exhaust gas treatment device 10, an induced air device 11 and a chimney 12, wherein the exhaust gas treatment device 10 (specifically, refer to the invention patent of a container type low concentration organic exhaust gas purification treatment device with the application number of 2016100448619 for implementation) includes a box body and an exhaust gas treatment component arranged in the box body, a box body air inlet and a box body air outlet are arranged on the box body, wherein the box body air inlet is connected with an exhaust outlet 5-2 of the multifunctional absorption condenser 5 through a second gas transmission main pipe 10-1, the box body air outlet is connected with the chimney 12 through an exhaust pipe 13, and the induced air device 11 is arranged on the exhaust pipe 13.
Referring to fig. 1 to 5, the working principle of the invention is:
During operation, the explosion venting gas collecting hood 1 completes the collection task of the waste gas, the waste gas is firstly conveyed into the multifunctional absorption condenser 5 through the first gas conveying main pipe 3 to be subjected to condensation cooling and pre-absorption treatment, after the treatment is completed, the waste gas is conveyed into the waste gas treatment device through the second gas conveying main pipe 10-1 to be subjected to biological film absorption treatment, the waste gas after the biological film absorption treatment is standard-reaching gas, and finally the standard-reaching gas is discharged into the air through the chimney 12.
The explosion relief valve can release explosion to waste gas during blasting, so that the safety of the whole waste gas collecting system is ensured. Specifically, when normal exhaust is performed, the explosion venting valve 1-5 is in a closed state, under the suction effect of the jet aspirator 3-1, the exhaust gas firstly enters the gas collecting and exhausting area from the bottom of the explosion venting gas collecting hood 1, then enters the first gas transmission main pipe 3 through the gas collecting hood exhaust port 1-3, and finally enters the multifunctional absorption condenser 5 for condensation or absorption treatment of the exhaust gas under the transmission of the first gas transmission main pipe 3. When the blasting appears, the gas collecting and exhausting area is pressurized instantly, the explosion venting valve 1-5 is opened under the pressure effect, the jet aspirator 3-1 is buffered in the negative pressure explosion venting area, so that the gas pressure in the gas collecting and exhausting area is reduced instantly, and the explosion venting effect is achieved; then, the gas waste gas entering the gas collecting and exhausting area enters the first gas transmission main pipe 3 through the gas transmission branch pipe 4 under the suction effect of the jet aspirator 3-1, and enters the multifunctional absorption condenser 5 for condensation and absorption treatment of the waste gas under the transmission of the first gas transmission main pipe 3.
The multifunctional absorption condenser 5 can perform condensation treatment on the exhaust gas, reduce the temperature of the exhaust gas and remove part of harmful substances in the exhaust gas. Specifically, during operation, high-temperature waste gas is in direct contact with low-temperature solution and is fully mixed, and heat of the waste gas and entrained substances in the process are transferred into the solution through a gas-liquid interface; the refrigerant coil takes heat away in a non-contact mode; the pollutants transferred into the solution are removed by entering a sewage treatment system, so that the dual effects of temperature reduction and harmful substance treatment are realized.
The exhaust treatment module is capable of completing the collection, treatment and emission tasks of the exhaust. Specifically, the waste gas subjected to the cold coagulation pretreatment enters the waste gas treatment device 10 through the second gas transmission main pipe 10-1 for treatment; after finishing the treatment task, the waste water is conveyed into the atmosphere through an exhaust pipe 13 and a chimney 12; the air inducing device 11 in the exhaust gas treatment system can guide the flow direction of the exhaust gas, so that the exhaust gas is promoted to flow along the direction of the second gas transmission main pipe 10-1-the exhaust gas treatment device 10-the exhaust pipe 13-the chimney 12, and the tasks of collecting, treating and discharging the exhaust gas can be smoothly completed.
Example 2
Referring to fig. 6, the difference between this embodiment and embodiment 1 is that the gas collecting and exhausting area and the negative pressure explosion venting area are separated by a partition board 1-6, the partition board 1-6 is vertically arranged, the area on one side of the partition board 1-6 is the gas collecting and exhausting area, the area on the other side of the partition board 1-6 is the negative pressure explosion venting area, and the explosion venting valve 1-5 is arranged on the partition board 1-6. When the explosion venting valve 1-5 is in an explosion venting state, the waste gas horizontally moves into the negative pressure explosion venting area through the explosion venting valve 1-5 and then enters the first gas transmission main pipe 3 through the gas transmission branch pipe 4, so that an explosion venting task of the waste gas is realized.
Other embodiments than the above are described with reference to example 1.
Example 3
Referring to fig. 7, the difference between this embodiment and embodiment 1 is that the gas collecting and exhausting area and the negative pressure explosion venting area are disposed in the cover bodies that are independent of each other, the cover bodies corresponding to the gas collecting and exhausting area and the negative pressure explosion venting area are connected through a large-caliber pipeline 1-7, and the explosion venting valve 1-5 is disposed in the large-caliber pipeline 1-7. When the explosion venting valve 1-5 is in an explosion venting state, waste gas enters the cover body corresponding to the negative pressure explosion venting area through the large-caliber pipeline 1-7, and then enters the first gas transmission main pipe 3 through the gas transmission branch pipe 4, so that the exhaust gas explosion venting task is realized.
Other embodiments than the above are described with reference to example 1.
Example 4
Referring to fig. 8 and 9, the present embodiment is different from embodiment 1 in that the explosion venting valve 1-5 is in a hinged structure, the explosion venting valve 1-5 includes a valve body 1-51, a valve port 1-52, and a valve cover 1-53, wherein the valve cover 1-53 is disposed on a partition plate 1-6, and the valve cover 1-53 is hinged to the partition plate 1-6. When the air pressure in the valve body 1-51 of the explosion venting valve 1-5 does not reach the explosion venting value, the valve cover 1-53 is pressed on the valve port 1-52 under the action of gravity to seal the valve port 1-52; when the air pressure in the valve body 1-51 of the explosion venting valve 1-5 reaches the explosion venting value, the valve cover 1-53 moves upwards under the action of waste gas to open the valve port 1-52, so that the task of venting the waste gas is realized.
Other embodiments than the above are described with reference to example 1.
Example 5
Referring to fig. 10, this embodiment is different from embodiment 1 in that the upper part of the condensing chamber is provided with a solution supply pipe 5-5 for spraying the solution, and the solution sprayed from the solution supply pipe 5-5 is dispersed in the tank and sufficiently and directly contacts with the exhaust gas to be treated from bottom to top to perform cooling and scrubbing.
Other embodiments than the above are described with reference to example 1.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather as various changes, modifications, substitutions, combinations, and simplifications which may be made therein without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The glue residue waste gas treatment system is characterized by comprising a gas collecting module, a condensation pretreatment module and a waste gas treatment module, wherein the gas collecting module comprises an explosion venting and gas collecting cover, the explosion venting and gas collecting cover comprises a normal gas collecting part and a negative pressure explosion venting part, the internal space of the normal gas collecting part is a gas collecting and gas discharging area, and the internal space of the negative pressure explosion venting part is a negative pressure explosion venting area; a gas collecting hood exhaust port is arranged on the hood wall of the gas collecting and exhausting area, the gas collecting hood exhaust port is connected with the condensation pretreatment module through a first gas transmission main pipe, and a jet aspirator is arranged on the first gas transmission main pipe; the cover wall of the negative pressure explosion venting area is provided with an explosion venting port which is connected with the first gas transmission main pipe through a gas transmission branch pipe; a plurality of normally closed explosion venting valves are uniformly arranged between the gas collection and exhaust area and the negative pressure explosion venting area;
The condensation pretreatment module comprises a multifunctional absorption condenser, the inner cavity of the multifunctional absorption condenser forms a condensation chamber, the lower end of the condensation chamber is provided with an exhaust gas inlet and a gas distribution pipe which are connected with the first gas transmission main pipe, and the upper end of the condensation chamber is provided with a condenser exhaust port; a cooling coil pipe for cooling is arranged in the condensation chamber, a solution supplementing inlet is arranged on the multifunctional absorption condenser, and the solution in the condensation chamber and the waste gas to be treated are subjected to contact condensation and gas washing treatment;
the exhaust gas treatment module comprises an exhaust gas treatment device, an induced air device and a chimney, wherein the exhaust gas treatment device comprises a box body and an exhaust gas treatment assembly arranged in the box body, a box body air inlet and a box body air outlet are arranged on the box body, the box body air inlet is connected with the condenser air outlet through a second gas transmission main pipe, the box body air outlet is connected with the chimney through an exhaust pipe, and the induced air device is arranged on the exhaust pipe;
When normal exhaust is carried out, the explosion venting valve is in a closed state, and when blasting occurs, the gas collecting exhaust area is pressurized instantly, the explosion venting valve is opened under the action of the pressure, and the exhaust gas which is not sucked by the jet aspirator is buffered in the negative pressure explosion venting area rapidly, so that the gas pressure in the gas collecting exhaust area is reduced instantly, and the explosion venting effect is achieved;
The multifunctional absorption condenser is provided with an overflow port, a solution is conveyed to the condensing chamber by a pump, the first gas transmission main pipe is provided with a jet aspirator for sucking and mixing waste gas to be treated, the tail end of the first gas transmission main pipe is connected with a gas distribution pipe in the condensing chamber, and the gas inlet of the gas distribution pipe forms the solution supplementing inlet.
2. The system of claim 1, wherein the gas collection and exhaust area and the negative pressure explosion venting area are separated by a partition plate, the partition plate is horizontally disposed, the area below the partition plate is the gas collection and exhaust area, the area above the partition plate is the negative pressure explosion venting area, and the explosion venting valve is disposed on the partition plate.
3. The system of claim 1, wherein the gas collection and exhaust area and the negative pressure explosion venting area are separated by a partition plate, the partition plate is vertically disposed, a region on one side of the partition plate is the gas collection and exhaust area, a region on the other side of the partition plate is the negative pressure explosion venting area, and the explosion venting valve is disposed on the partition plate.
4. The glue residue waste gas treatment system according to claim 1, wherein the gas collecting and exhausting area and the negative pressure explosion venting area are arranged in mutually independent cover bodies, the cover bodies corresponding to the gas collecting and exhausting area and the negative pressure explosion venting area are connected through a pipeline, and the explosion venting valve is arranged in the pipeline.
5. A glue residue exhaust gas treatment system according to any one of claims 2-3, wherein a plurality of explosion venting valves are evenly arranged on the partition plate.
6. The system of claim 2, wherein the explosion venting valve is of a dead-weight open-top type structure and comprises a valve body, a valve port, a valve cover disposed above the valve port, and a guide for guiding the upward and downward movement of the valve cover.
7. A glue residue waste gas treatment system according to any one of claims 2 to 3, wherein the explosion venting valve is of a hinged structure and comprises a valve body, a valve port and a valve cover, wherein the valve cover is arranged on the partition plate, and the valve cover is hinged with the partition plate.
8. The glue residue waste gas treatment system according to claim 1, further comprising a regulating water tank, wherein a concentration online detection and allocation system is arranged in the regulating water tank, the concentration online detection and allocation system comprises a concentration online detection probe, a controller and a dispensing device, the concentration online detection probe is arranged in the regulating water tank and is connected with a signal input end of the controller, and the dispensing device is connected with a signal output end of the controller.
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| CN201811547648.5A CN109603513B (en) | 2018-12-17 | 2018-12-17 | Glue residue waste gas treatment system |
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| CN201811547648.5A CN109603513B (en) | 2018-12-17 | 2018-12-17 | Glue residue waste gas treatment system |
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