CN104923030A - High-temperature waste gas treatment system for polyamide production equipment - Google Patents
High-temperature waste gas treatment system for polyamide production equipment Download PDFInfo
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- CN104923030A CN104923030A CN201510359788.XA CN201510359788A CN104923030A CN 104923030 A CN104923030 A CN 104923030A CN 201510359788 A CN201510359788 A CN 201510359788A CN 104923030 A CN104923030 A CN 104923030A
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Abstract
The invention discloses a high-temperature waste gas treatment system for polyamide production equipment. The high-temperature waste gas treatment system comprises a high-temperature waste gas treatment unit and a waste liquid treatment system. The high-temperature waste gas treatment unit comprises a vent tank, a second tube-bundle condenser, a coil, a refrigerating system and a waste liquid collector. The waste liquid treatment system comprises a settling pond, an oil trap, an anaerobic tank, a neutralizing tank, a flotation tank, a primary settling tank, an aerobic tank, and a secondary settling tank, which are arranged in order from front to rear according to a process flow. An inlet of the settling tank is communicated with a liquid outlet of a waste liquid collection tank. The high-temperature waste gas treatment system has the advantages such as high purifying efficiency, good purifying effect and double condensation availability.
Description
Technical field
The present invention relates to exhaust-gas treatment field, particularly relate to a kind of high-temp waste gas treatment system of polyamide process units.
Background technology
In the industrial production as a large amount of high-temp waste gas can be produced in the production process of polyamide.High-temp waste gas, as processed not in time, not only can affect the normal production of factory, and can cause serious pollution to environment, notably, brings potential safety hazard to the staff of factory and periphery inhabitation personnel thereof.At present, high-temp waste gas generally adopts indirect cooling method process.By the condensation of pipe bundle condenser condensation, waste gas condensation becomes aqueous, is effectively separated, removes.But adopt simple pipe bundle condenser to carry out condensation separation to high-temp waste gas, the efficiency that condensation is removed is lower, for the waste gas that some temperature are very high, as the waste gas that polyamide produces when carrying out thin film evaporation and molecular clock, does not reach good removal effect.Moreover the waste liquid produced after traditional condensation also needs to focus on.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide that a kind of purification efficiency is high, good purification, there is the high-temp waste gas treatment system of the polyamide process units of twice condensation function.
The present invention adopts following technological means to solve the problems of the technologies described above: a kind of high-temp waste gas treatment system of polyamide process units comprises high-temperature waste gas treating apparatus and liquid waste treatment system.The waste liquid that described high-temperature waste gas treating apparatus produces processes by described liquid waste treatment system, and described high-temperature waste gas treating apparatus comprises ventilation tank, the second pipe bundle condenser, coil pipe, refrigeration system and waste collecting device.The lower end of described ventilation tank offers air inlet, described coil pipe is arranged in the internal cavities of described ventilation tank in the shape of a spiral, the bottom of described coil pipe is provided with water inlet, the top of described coil pipe is provided with delivery port, and the water inlet of described coil pipe and the delivery port of described coil pipe all extend to outside the tank body of described ventilation tank.The water inlet of described coil pipe and the discharge outlet of described refrigeration system interlink, and the delivery port of described coil pipe and the water inlet of described refrigeration system interlink.Described second pipe bundle condenser is arranged on the top of described ventilation tank, and the bottom of described second pipe bundle condenser is interlinked by the top of wireway and described ventilation tank, and the top of described second pipe bundle condenser is connected with blast pipe.The bottom of described ventilation tank also offers waste liquid outlet, and described waste collecting device comprises catheter and waste collection tank, and the top of described waste collection tank is connected by the waste liquid outlet of described catheter with described ventilation tank.
Described liquid waste treatment system comprises settling tank, oil interceptor, anaerobic pond, neutralization pond, flotation tank, first stage precipitation tank, aerobic pond and second-level settling pond from front to back successively by technological process.The entrance of described settling tank is connected with the leakage fluid dram of described waste collection tank.Described settling tank is in order to carry out Separation of Solid and Liquid by waste water.Waste water is carried out aqueous phase-separation of oil by described oil interceptor.Described oil interceptor is configured with suction pump, described suction pump by isolated waste water lifting in anaerobic pond.Described anaerobic pond decomposes the organic matter in waste water, described neutralization pond carries out neutralisation treatment to the waste water entered after anaerobic pond process, the bottom of described flotation tank is provided with blowing device, suspended particulate in described flotation tank waste water is blown to liquid level by described blowing device by described flotation tank, and is carried by the waste water below superposed layer and precipitating into described first stage precipitation tank.Nitrated process is carried out to the waste water flowed into wherein in described aerobic pond.The waste water flowed into wherein is carried out sedimentation again by described second-level settling pond.
Preferably: described waste collection tank also offers automatic draining device, described automatic draining device comprises the second liquid level sensor and electronics lock, described second liquid level sensor is arranged on the inwall of described waste collection tank, and described electronics lock is arranged on the leakage fluid dram place of described waste collection tank.
Preferably: in described second pipe bundle condenser, be provided with the second deflection plate, described second deflection plate is connected with the condenser pipe in described second pipe bundle condenser.
Preferably: the water side of described coil pipe is also provided with the 6th elevator pump.
Preferably: in described neutralization pond, be provided with pH adjusting apparatus.
Preferably: described liquid waste treatment system also comprises sludge condensation filter-pressing device, described sludge press filtration device carries out dehydration concentration in order to the mud be precipitated out by described second-level settling pond.
Preferably: described liquid waste treatment system also comprises sterilization pool, the water inlet of described sterilization pool is connected with the delivery port of described second-level settling pond.
Preferably: described second-level settling pond is the one of vertical sedimentation basin, radical sedimentation basin or rectangular sedimentation tank.
Preferably: described settling tank, described oil interceptor, described anaerobic pond, described neutralization pond, described flotation tank, described first stage precipitation tank, described aerobic pond, described second-level settling pond and described sterilization pool are expoxy glass steel structure water pond.
Preferably: in described sludge press filtration device, be configured with Pulp pump.
The invention has the advantages that: high-temp waste gas is passed in tank from the air inlet of ventilation tank, by the condensation of coil pipe, by waste gas condensation a part of in high-temp waste gas to liquid, fall into collecting tank.The waste gas of uncooled one-tenth liquid state, by the effect of pipe bundle condenser, carries out time condensation, carries out condensation cleaning process further to waste gas, fall into equally to collecting tank, realize the object of twice time condensation function through the condensed waste liquid of pipe bundle condenser.Further, in pipe bundle condenser, be provided with deflection plate, play the effect of fixed support.Owing to being provided with waste collecting device in the bottom of ventilation tank, sample can be taken out at any time from waste collection tank, thus the harmful components of test samples.When the liquid level of waste collection tank is higher than setting value, send induced signal by liquid level sensor, drive electronics lock to open, excessive waste liquid is discharged, realizes the function of automatic drain.Waste liquid through the discharge of ventilation tank flows in liquid waste treatment system and carries out purified treatment.Owing to arranging oil interceptor between settling tank and anaerobic pond, by the effect of oil interceptor, it is supreme that the oil phase making proportion lighter floats the aqueous phase heavier with proportion, and will reach the effect of Oil-water separation in isolated waste water lifting to anaerobic pond by suction pump.Flotation tank is set between neutralization pond and first stage precipitation tank, the bottom of flotation tank is provided with blowing device, the suspended particulate in described flotation tank waste water is blown to liquid level, and the waste water below superposed layer is carried in first stage precipitation tank, alleviate cleaning load.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the embodiment of the present invention.
Fig. 2 is the structural representation of emission-control equipment in the embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1-2, the present embodiment comprises emission-control equipment and liquid waste treatment system, the waste gas produced in production process carries out decomposing by described emission-control equipment, settlement treatment, and the sewage produced in production process is carried out purified treatment by described liquid waste treatment system.
Described emission-control equipment comprises high-temperature waste gas treating apparatus, spray cleaning exhaust device and odor removal from front to back successively.
Described emission-control equipment comprises high-temperature waste gas treating apparatus, spray cleaning exhaust device and odor removal from front to back successively.
Described high-temperature waste gas treating apparatus comprises ventilation tank 12011, second pipe bundle condenser 12012, coil pipe 12013 and refrigeration system 12014.The lower end of described ventilation tank 12011 offers air inlet, described coil pipe 12013 is arranged in the internal cavities of described ventilation tank 12011 in the shape of a spiral, the bottom of described coil pipe 12013 is provided with water inlet, the top of described coil pipe 12013 is provided with delivery port, and the water inlet of described coil pipe 12013 and the delivery port of described coil pipe 12013 all extend to outside the tank body of described ventilation tank 12011.The water inlet of described coil pipe 12013 and the discharge outlet of described refrigeration system 12014 interlink, and the delivery port of described coil pipe 12013 and the water inlet of described refrigeration system 12014 interlink.Described second pipe bundle condenser 12012 is arranged on the top of described ventilation tank 12011, the bottom of described second pipe bundle condenser 12012 is interlinked with the top of described ventilation tank 12011 by the second wireway 12015, and the top of described second pipe bundle condenser 12012 is connected with downtake pipe 12016.
Described spray cleaning exhaust device comprises the first air inlet pipe 12021, at least one spray agent set and second exhaust pipe 12023.The lower end of described spray agent set 12022 offers the first air intake, the top of described spray agent set 12022 offers first row gas port, the inside of described spray agent set is provided with spray equipment 12024, and the lower end of described spray agent set offers waste liquid outlet 10228.The outlet of described first air inlet pipe 12021 is connected with described first air intake, and described first row gas port is connected with described second exhaust pipe 12023.
Described odor removal comprises the 3rd air inlet pipe 12031, deodorizing agent set 12032 and the 3rd blast pipe 12033.The internal cavities of deodorizing agent set 12032 is hung with some pieces of biomembranes 12034.The outlet of described 3rd air inlet pipe 12031 is connected with the air inlet of described deodorizing agent set 12032, and the exhaust outlet of described deodorizing agent set 12032 is connected with described 3rd blast pipe 12031.
The bottom of described ventilation tank 12011 also offers waste liquid outlet, and described high-temperature waste gas treating apparatus also comprises waste collecting device.Described waste collecting device comprises catheter 120181 and waste collection tank 120182, and the top of described waste collection tank 120182 is connected by the waste liquid outlet of described catheter 120181 with described ventilation tank 12011.Described waste collection tank 120182 also offers automatic draining device, described automatic draining device comprises the second liquid level sensor 120191 and electronics lock 120192, described second liquid level sensor 120191 is arranged on the inwall of described waste collection tank 120182, and described electronics lock 120192 is arranged on the leakage fluid dram place of described waste collection tank 12018.Be provided with the second deflection plate 120121 in described second pipe bundle condenser 12012, described second deflection plate 120121 is connected with the condenser pipe in described second pipe bundle condenser 12012.The water side of described coil pipe 12013 is also provided with the 6th and carries material pump 10120131.
Described spray agent set 12022 comprises the first spray agent set 120221, second and sprays agent set 120222 and connect the second air inlet pipe 120223 of described first spray agent set 120221 and the second spray agent set 120222, and described second air inlet pipe 120222 is provided with the 7th elevator pump 12025.
Described biomembrane 12034 comprises adsorption layer 120341, anaerobic layer 120342, aerobic layer 120343 and filter material layer 120344 from outside to inside respectively.
Described liquid waste treatment system comprises settling tank, oil interceptor, anaerobic pond, neutralization pond, flotation tank, first stage precipitation tank, aerobic pond and second-level settling pond from front to back successively by technological process.Waste water is carried out Separation of Solid and Liquid by described settling tank, and waste water is carried out aqueous phase-separation of oil by described oil interceptor.Described oil interceptor is configured with suction pump, described suction pump by isolated waste water lifting in anaerobic pond.Described anaerobic pond decomposes the organic matter in waste water, described neutralization pond carries out neutralisation treatment to the waste water after anaerobic pond process, the bottom of described flotation tank is provided with blowing device, suspended particulate in described flotation tank waste water is blown to liquid level by described blowing device by described flotation tank, and is carried by the waste water below superposed layer and precipitating into described first stage precipitation tank.Nitrated process is carried out to the waste water flowed into wherein in described aerobic pond; The waste water flowed into wherein is carried out sedimentation again by described second-level settling pond.
Be provided with pH adjusting apparatus in described neutralization pond, all piling up in described anaerobic pond and described Aerobic Pond has activated sludge.Described liquid waste treatment system also comprises sludge condensation filter-pressing device and sterilization pool, and described sludge press filtration device carries out dehydration concentration in order to the mud be precipitated out by described second-level settling pond.The water inlet of described sterilization pool is connected with the delivery port of described second-level settling pond, and described second-level settling pond is the one of vertical sedimentation basin, radical sedimentation basin or rectangular sedimentation tank.Described settling tank, described oil interceptor, described anaerobic pond, described neutralization pond, described flotation tank, described first stage precipitation tank, described aerobic pond, described second-level settling pond and described sterilization pool are expoxy glass steel structure water pond, and described sludge press filtration device is configured with Pulp pump.
The high-temp waste gas produced in production is carried out condensation by high-temperature waste gas treating apparatus by the present embodiment, condensed waste liquid flows into collection in waste collection tank 120182, purification, the gas of discharging after condensation together enters spray cleaning exhaust device with the organic exhaust gas that granulation produces and carries out double purification, dedusting, then discharges after odor removal decomposes.The waste water produced in production all flows into liquid waste treatment system and processes.Concrete technology is as follows: first waste water is carried out Separation of Solid and Liquid through settling tank by the waste water produced in production, then through described oil interceptor, waste water is carried out aqueous phase-separation of oil.Described oil interceptor is configured with suction pump, described suction pump by isolated waste water lifting in anaerobic pond.Described anaerobic pond decomposes the organic matter in waste water, described neutralization pond carries out neutralisation treatment to the waste water after anaerobic pond process, the bottom of described flotation tank is provided with blowing device, suspended particulate in described flotation tank waste water is blown to liquid level by described blowing device by described flotation tank, and is carried by the waste water below superposed layer and precipitating into described first stage precipitation tank.Waste water after first stage precipitation tank precipitation flows into described aerobic pond, carries out nitrated process; Waste water after the process of aerobic pond flows in second-level settling pond, carries out sedimentation again.Sludge press filtration device carries out dehydration concentration in order to the mud be precipitated out by described second-level settling pond.Waste water after second-level settling pond process flows in described sterilization pool, after carrying out disinfection, discharges.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; the any amendment done within all spirit in the invention and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in the invention.
Claims (10)
1. a high-temp waste gas treatment system for polyamide process units, comprises high-temperature waste gas treating apparatus and liquid waste treatment system; The waste liquid that described high-temperature waste gas treating apparatus produces processes by described liquid waste treatment system, and described liquid waste treatment system comprises settling tank, oil interceptor, anaerobic pond, neutralization pond, flotation tank, first stage precipitation tank, aerobic pond and second-level settling pond; It is characterized in that: described high-temperature waste gas treating apparatus comprises ventilation tank, the second pipe bundle condenser, coil pipe, refrigeration system and waste collecting device; The lower end of described ventilation tank offers air inlet, described coil pipe is arranged in the internal cavities of described ventilation tank in the shape of a spiral, the bottom of described coil pipe is provided with water inlet, the top of described coil pipe is provided with delivery port, and the water inlet of described coil pipe and the delivery port of described coil pipe all extend to outside the tank body of described ventilation tank; The water inlet of described coil pipe and the discharge outlet of described refrigeration system interlink, and the delivery port of described coil pipe and the water inlet of described refrigeration system interlink; Described second pipe bundle condenser is arranged on the top of described ventilation tank, and the bottom of described second pipe bundle condenser is interlinked by the top of wireway and described ventilation tank, and the top of described second pipe bundle condenser is connected with blast pipe; The bottom of described ventilation tank also offers waste liquid outlet, and described waste collecting device comprises catheter and waste collection tank, and the top of described waste collection tank is connected by the waste liquid outlet of described catheter with described ventilation tank;
Described settling tank, oil interceptor, anaerobic pond, neutralization pond, flotation tank, first stage precipitation tank, aerobic pond and second-level settling pond set gradually by after technological process in the past; The entrance of described settling tank is connected with the leakage fluid dram of described waste collection tank; Described settling tank is in order to carry out Separation of Solid and Liquid by waste water; Waste water is carried out aqueous phase-separation of oil by described oil interceptor; Described oil interceptor is configured with suction pump, described suction pump by isolated waste water lifting in anaerobic pond; Described anaerobic pond decomposes the organic matter in waste water, described neutralization pond carries out neutralisation treatment to the waste water entered after anaerobic pond process, the bottom of described flotation tank is provided with blowing device, suspended particulate in described flotation tank waste water is blown to liquid level by described blowing device by described flotation tank, and is carried by the waste water below superposed layer and precipitating into described first stage precipitation tank; Nitrated process is carried out to the waste water flowed into wherein in described aerobic pond; The waste water flowed into wherein is carried out sedimentation again by described second-level settling pond.
2. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, it is characterized in that: described waste collection tank also offers automatic draining device, described automatic draining device comprises the second liquid level sensor and electronics lock, described second liquid level sensor is arranged on the inwall of described waste collection tank, and described electronics lock is arranged on the leakage fluid dram place of described waste collection tank.
3. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, it is characterized in that: be provided with the second deflection plate in described second pipe bundle condenser, described second deflection plate is connected with the condenser pipe in described second pipe bundle condenser.
4. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, is characterized in that: the water side of described coil pipe is also provided with the 6th elevator pump.
5. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, is characterized in that: be provided with pH adjusting apparatus in described neutralization pond.
6. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, it is characterized in that: described liquid waste treatment system also comprises sludge condensation filter-pressing device, described sludge press filtration device carries out dehydration concentration in order to the mud be precipitated out by described second-level settling pond.
7. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, is characterized in that: described liquid waste treatment system also comprises sterilization pool, and the water inlet of described sterilization pool is connected with the delivery port of described second-level settling pond.
8. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, is characterized in that: described second-level settling pond is the one of vertical sedimentation basin, radical sedimentation basin or rectangular sedimentation tank.
9. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, is characterized in that: described settling tank, described oil interceptor, described anaerobic pond, described neutralization pond, described flotation tank, described first stage precipitation tank, described aerobic pond, described second-level settling pond and described sterilization pool are expoxy glass steel structure water pond.
10. the high-temp waste gas treatment system of a kind of polyamide process units according to claim 1, is characterized in that: be configured with Pulp pump in described sludge press filtration device.
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2015
- 2015-06-25 CN CN201510359788.XA patent/CN104923030B/en not_active Expired - Fee Related
Patent Citations (7)
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| CN201439505U (en) * | 2009-07-01 | 2010-04-21 | 北京城市排水集团有限责任公司 | Urban sewage treatment device for removing organic by anaerobic process and denitrifying by autotrophic removal process |
| CN101875527A (en) * | 2010-07-16 | 2010-11-03 | 天津大学 | High-efficiency treatment method of potato alcohol wastewater |
| CN102249485A (en) * | 2011-05-19 | 2011-11-23 | 陕西比迪欧化工有限公司 | Device for treating high-concentration organic wastewater and wastewater generated during production of 1,4-butanediol |
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Granted publication date: 20170301 Termination date: 20180625 |