CN208824192U - A kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing burning processing system - Google Patents

A kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing burning processing system Download PDF

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CN208824192U
CN208824192U CN201821237255.XU CN201821237255U CN208824192U CN 208824192 U CN208824192 U CN 208824192U CN 201821237255 U CN201821237255 U CN 201821237255U CN 208824192 U CN208824192 U CN 208824192U
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exhaust
gas
exhaust gas
desorption
valve
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李立清
苏长青
李灏阳
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Central South University
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Central South University
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Abstract

The utility model discloses a kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing burning processing systems, including preprocessor, exhaust gas adsorption device, adsorb blower, chimney, heat exchanger, blower is desorbed, cold blast sliding valve, catalytic combustion system, fire arrester, mend air-valve and PLC robot control system(RCS), the exhaust gas adsorption device carries out adsorption cleaning processing to exhaust gas, if concentration is up to standard, then it is discharged under the effect of pumping of absorption blower through chimney, if concentration is not up to standard, then adsorption tower is desorbed, tail gas carries out catalysis burning processing after desorption, therefore, using the exhaust treatment system of the application, realize absorption-desorption concentration-catalysis burning combination and cooperation processing to organic exhaust gas, organic exhaust gas can not only efficiently be focused on, and make full use of the discharged thermal energy that burns, to reduce comprehensive energy consumption, the system can handle Wind Volume The organic exhaust gas of multiple types low concentration, has and is widely applied range.

Description

A kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing burning processing system
Technical field
The utility model relates to volatile organic compounds processing technology fields, and in particular to a kind of to utilize activated carbon adsorption Volatile organic waste gas carries out the efficient centralized processing system of the VOCs exhaust gas of catalysis burning processing after desorption concentration.
Background technique
Volatile organic matter (VOCs) is divided into alkanes, aromatic hydrocarbons, esters, aldehydes etc. by chemical structure, is surface layer ozone With fine particle PM2.5The main producers object of generation is the important pollutant sources for leading to city haze and photochemical fog;It waves Hair property organic compound concentrations can cause the acute poisoning of people when excessively high, less serious case will appear the diseases such as headache, dizziness, cough, vomiting Shape;Severe one will appear hepatotoxicity and even go into a coma, and cause life danger, these will seriously threaten human health and Environmental security. In recent years, Air Pollution Prevention Law revised edition, State Council's " ten, gas ", local air pollution control regulation and VOCs industry The appearance of a series of policies and measures such as pollutant emission standard strengthens the management to industrial waste gas, to volatile organic matter Control is even more to propose strict demand.
Volatile organic matter is mainly derived from the key industrys such as petrochemical industry, organic chemical industry, external coating, packages printing, especially It is the enterprises such as pharmacy, printing, printing and dyeing, electronics industry, oil refining, chemical industry, rubber, generated VOCs component is different, many kinds of. Currently, usually there is the purifying treatment method of volatile organic matter in enterprise: absorption process, absorption method, bioanalysis, Production by Catalytic Combustion Process and Non-thermal plasma trap etc..Absorption process is to make harmful components in exhaust gas by liquid absorption by washing using liquid as absorbing liquid, Influence to achieve the purpose that purify exhaust gas, vulnerable to organic exhaust gas solubility and after absorbing the problems such as liquid waste processing;Absorption method It is that organic exhaust gas is adsorbed into various pernicious gases by active carbon substance, to achieve the purpose that purification, but organic exhaust gas is simultaneously It does not completely remove, and active carbon needs to regularly replace, and may cause secondary pollution;Bioanalysis is the metabolism using microorganism Biodegradable process is carried out to VOCs, is related to gas, liquid, solid three-phase mass transfer and biochemical degradation, influence factor is more complex;Catalysis combustion Burning method is organic exhaust gas to be heated to 200~300 DEG C, under the effect of the catalyst, by oxidizing hydrocarbon therein at two Carbonoxide and water, but have to the concentration of organic exhaust gas required, it is not suitable for the processing of extremely low concentration organic exhaust gas;Low temperature etc. from Sub- technology is suitble to handle low concentration, organic exhaust gas not easy to explode, obtains high energy electron and O by high pressure pulse discharge, OH isoreactivity particle, reacts with pollutant, is converted into CO2、H2O、N2、SO2Deng, so that it is purified exhaust gas, but its Treatment effeciency need to further increase.
Utility model content
In view of the deficiencies of the prior art, be solution industrial organic exhaust gas complicated component, concentration range is big, single treatment technology It is difficult to realize the problem of organic exhaust gas effectively removes, the purpose of the utility model is to provide a kind of VOCs exhaust-gas efficient adsorption/desorptions Catalytic-combustion processing system is high to realize absorption-desorption concentration-catalysis burning combination and cooperation processing to organic exhaust gas Effect centralized processing organic exhaust gas, can not only efficiently focus on organic exhaust gas, and make full use of the discharged thermal energy that burns, To reduce comprehensive energy consumption.The system can handle the organic exhaust gas of Wind Volume multiple types low concentration, have and be widely applied model It encloses.
The utility model is solved the above problems by following technological means: a kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing combustion Burn processing system, including preprocessor, exhaust gas adsorption device, absorption blower, chimney, heat exchanger, desorption blower, cold blast sliding valve, urge Change burner, fire arrester, mend air-valve and PLC robot control system(RCS);
The exhaust end of the preprocessor is connected to by the pipeline with intake valve with the inlet end of exhaust gas adsorption device, exhaust gas The exhaust end of adsorbent equipment is connected to by the pipeline with exhaust valve with the air inlet of absorption blower, the exhaust end of exhaust gas adsorption device It is provided with concentration monitor, the exhaust outlet for adsorbing blower is connected to chimney;
Heating heat exchanger channels and cooling heat exchanger channels are formed in the heat exchanger, exhaust gas adsorption device passes through band catalysis burning The pipeline of intake valve is connected to the inlet end of heating heat exchanger channels, and the inlet end for the heat exchanger channels that heat up is also connected with cold blast sliding valve Cold air duct, heating heat exchanger channels are interior to be arranged having heaters, the air inlet of the exhaust end and catalytic combustion system of the heat exchanger channels that heat up End connection;
The exhaust end of catalytic combustion system is connected to the inlet end of fire arrester, the exhaust end of fire arrester and desorption blower into Air port is connected to, and is connected on the pipeline that fire arrester is connected to desorption blower with the mend wind passage for mending air-valve, the air draft of blower is desorbed Mouthful with cooling heat exchanger channels inlet end be connected to, the exhaust end for the heat exchanger channels that cool down pass through respectively the pipeline in line by-passing valve with Pipeline with catalysis burning and gas-exhausting valve is connected to chimney and exhaust gas adsorption device.
Further, the exhaust gas adsorption device includes at least two waste gas absorbers arranged side by side.
It further, further include adsorption temp sensor, catalysis ignition temperature sensor and desorption gas temperature sensor.
Further, the combustion chamber of catalytic combustion system is provided with benefit air valve.
Further, air gauge and temperature measuring instrument are provided in each airflow line and gas reaction chamber.
The utility model has the beneficial effects that
(1) present invention is a kind of organic exhaust gas Joint adsorption-desorption-catalysis burning collaboration treatment process, realizes strong wind Measure the efficient stable processing of multiple types low-concentration organic exhaust gas.
(2) it can be recycled after the absorbent charcoal material desorption and regeneration in exhaust gas adsorption device of the present invention, there is intensity height, machine The features such as tool performance is good, adsorbent equipment good operability, operating cost are lower.
(3) present invention is provided with heat exchanger, and the UTILIZATION OF VESIDUAL HEAT IN that catalytic combustion system generates is had in exhaust gas adsorption device The utilization of the regeneration of the desorption and active carbon of machine exhaust gas, waste heat reduces system energy consumption, reaches energy saving purpose.
(4) present invention realizes organic exhaust gas continuous processing technique, the multiple absorption being arranged in parallel in exhaust gas adsorption device Device can carry out the adsorption/desorption of organic exhaust gas simultaneously, and exhaust treatment efficiency is high, by automatic control system, adsorption and desorption according to Secondary linking makes to run safer convenient for management.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is the overall structure diagram of the utility model.
In figure, 1-preprocessor, 2-exhaust gas adsorption devices, 3-absorption blowers, 4-desorption blowers, 5-catalysis burnings Device, 6-heat exchangers, 7-fire arresters, 8-cold blast sliding valves, 9-mend air-valve, and 10-chimneys, 11-PLC robot control system(RCS)s, 12-is straight Arrange by-passing valve.
Specific embodiment
For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model Work more comprehensively, meticulously describes, but the protection scope of the utility model is not limited to embodiment in detail below.
Such as Fig. 1, the VOCs exhaust-gas efficient adsorption/desorption catalyzing burning processing system, including preprocessor 1, exhaust gas are inhaled Adsorption device 2, chimney 10, heat exchanger 6, desorption blower 4, cold blast sliding valve 8, catalytic combustion system 5, fire arrester 7, mends wind at absorption blower 3 Valve 9 and PLC robot control system(RCS) 11.
The exhaust end of the preprocessor 1 is connected to by the pipeline with intake valve with the inlet end of exhaust gas adsorption device 2, is given up The exhaust end of aspiration adsorption device 2 is connected to by the pipeline with exhaust valve with the air inlet of absorption blower 3, the row of exhaust gas adsorption device Gas end is provided with concentration monitor, and the exhaust outlet of absorption blower 3 is connected to chimney 10.The exhaust gas adsorption device 2 is according to design It is required that and actual needs, connect and is formed in parallel by two or more waste gas absorbers, formed one and regenerated with one, or it is more With a regenerated operational mode.Cellular activated carbon is loaded in waste gas absorber, VOCs exhaust gas is attracted to the porous interior of active carbon Surface, so that exhaust gas be made to be purified, purified gas is by absorption air-introduced machine, through chimney qualified discharge.
Heating heat exchanger channels and cooling heat exchanger channels are formed in the heat exchanger 6, exhaust gas adsorption device 2 passes through band catalysis combustion The pipeline for burning into air valve is connected to the inlet end of heating heat exchanger channels, and the inlet end for the heat exchanger channels that heat up is also connected with band cold blast sliding valve 8 cold air duct, heating heat exchanger channels are interior to be arranged having heaters, exhaust end and the catalytic combustion system 5 of the heat exchanger channels that heat up Inlet end connection;The exhaust end of catalytic combustion system is connected to the inlet end of fire arrester 7, the exhaust end and desorption wind of fire arrester 7 The air inlet of machine 4 is connected to, and is connected on the pipeline that fire arrester is connected to desorption blower with the mend wind passage for mending air-valve 9, wind is desorbed The exhaust outlet of machine is connected to the inlet end of cooling heat exchanger channels, and the exhaust end for the heat exchanger channels that cool down passes through respectively in line by-passing valve 12 pipeline and with catalysis burning and gas-exhausting valve pipeline be connected to chimney 10 and exhaust gas adsorption device 2.When absorber active carbon is inhaled For attached layer close to when breakpoint, the intake valve and exhaust valve of adsorber air inlet end and exhaust end is automatically closed in PLC automatic system, is opened simultaneously Open catalysis burning charge valve and catalysis burning and gas-exhausting valve.Through thermal current desorption and regeneration, the VOCs that stripping comes out is concentrated active carbon High-concentration organic waste gas is formed, into catalytic combustion system, gas is desorbed before entering catalytic combustion system, first in heat exchanger It exchanges heat and is heated with combustion tail gas in heating heat exchanger channels, gas temperature after heat exchanger is such as desorbed and is still below 200 DEG C, then starts Heater heating makes to be desorbed temperature degree higher than 200 DEG C.Then desorption gas enters catalytic domain, under the action of catalyst catalysis burning It decomposes.The heat of combustion tail gas and desorption gas are carried out heat exchange by heat exchanger, so that combustion tail gas is cooled down, and be back to active carbon Desorption.Blower is desorbed and uses frequency conversion fan, maintains micro-vacuum state in combustion chamber, guarantees that pernicious gas does not overflow.
Further include adsorption temp sensor, be catalyzed ignition temperature sensor and desorption gas temperature sensor, meanwhile, each It is provided with gas flowmeter on a airflow line, air gauge is provided in each airflow line and gas reaction chamber and temperature is surveyed Measure instrument.Adsorption temp sensor is for detecting adsorption bed temperature, catalysis ignition temperature sensor real time monitoring catalysis burning Device inlet and outlet and chamber temperature, desorption temperature sensor detect desorption gas temperature.PLC robot control system(RCS) is adsorbed exhaust gas and is filled It sets in gas outlet organic concentration, adsorption bed temperature, catalytic combustion system and ventilation shaft for desorption gas temperature, many places Control is adjusted in gas air quantity.The exhaust gas concentration of exhaust gas adsorption device gas outlet is detected automatically, air quantity, which is adjusted, to be used Motor-driven valve, PLC robot control system(RCS) issue control instruction according to transmission data.Cold blast sliding valve mends air-valve, each air inlet, exhaust valve using journey The Boiler pressure control dish valve of sequence control.
The continuous purification that active carbon is realized by the desorption to activated carbon adsorption layer is desorbed out the organic matter being concentrated and send to urging Change burner and carry out catalysis burning, exhaust gases after combustion partial discharge after cold air cools down is partially de- for cellular activated carbon Attached regeneration reaches Waste Heat Reuse and energy-efficient purpose.Setting at least two sets of absorbers are used alternatingly, and are both suitable for operating continuously, It is also suitable for intermittently operated.
Precious metal catalyst loaded catalyst honeycomb substrate is used in catalytic combustion system, small, active height, mentions with resistance The features such as high oxidation reaction rate, heat shock resistance.The catalyst combustion temperature is in 200-600 DEG C of range.Adsorbent equipment is set up defences quick-fried Valve.Catalytic combustor is provided with dump mouth, is provided with benefit air valve at discharge outlet of meeting an urgent need, prevents from burning under abnormal conditions It is automatically turned on when intraventricular pressure increases and mends air valve, guarantee equipment safety.
Fire arrester gas exhaust piping is connect with the mend wind passage for mending air-valve, and control sends to the gas temperature of desorption lower than 120 ℃.Combustion tail gas is after cooling heat exchanger channels outflow, and a pipeline is connected with chimney, the direct qualified discharge of partial fume;It is another Pipeline is connected with exhaust gas adsorption device, and partial fume is used for regenerating active carbon.
To keep above scheme clearer, working principle is described in detail below:
Organic exhaust gas adsorption: preprocessed device 1 treated organic exhaust gas passes through intake valve and 2 air inlet of exhaust gas adsorption device Mouth connection, carries out adsorption cleaning, the organic pollutant in exhaust gas is tightly held by activated carbon retention, and gas is through arranging after purification at normal temperature Air valve is by absorption blower 3 through 10 qualified discharge of chimney.It is more than setting value when 2 exhaust outlet concentration monitor of exhaust gas adsorption device is shown When, pass through 11 switch valve of PLC robot control system(RCS) (i.e. intake valve and exhaust valve closure, catalysis burning charge valve and catalysis burning row Air valve is opened), into hot wind desorption stage.Adsorption system capital equipment and instrument have absorption blower, adsorption temp sensor, pressure Power table, concentration monitor and gas flowmeter.
Organic exhaust gas desorption: the VOCs gas that concentration is desorbed initially enters the heat exchanger 6 being located in catalytic combustion system 5, It exchanges heat and heats with catalysis combustion tail gas, if the gas temperature is lower than 200 DEG C, PLC robot control system(RCS) control starting heater pair The gas is heated, and is allowed to be raised to 200-300 DEG C, subsequently into catalysis burn bed, the gas in catalytic bed It burns within the scope of 200-600 DEG C.Combustion tail gas enters in exhaust gas adsorption device 2 through being catalyzed burning and gas-exhausting valve, heating of Activated Charcoal carries out desorption manipulation.When active carbon is heated to certain temperature, the organic pollutant in active carbon is adsorbed on out of active carbon High-concentration organic waste gas is detached and is formed, the air for filling into system with cold blast sliding valve 8 after being catalyzed burning charge valve is mixed It closes.Desorption system capital equipment and instrument have desorption blower, heat exchanger, cold blast sliding valve, mend air-valve, in line by-passing valve, gas flow Meter, catalysis ignition temperature sensor, desorption gas temperature sensor, pressure gauge and oxygen content concentration monitor.When system carries out When work is desorbed in organic exhaust gas, other set exhaust gas adsorption device 2 carries out organic exhaust gas adsorption, circuits sequentially operation.Or it is System is a multi-purpose desorption form.
Organic waste gas catalytic combustion: stripping go out it is concentrated after high-concentration organic waste gas by desorption blower 4 be sent into catalysis combustion Burn the combustion chamber of device 5.Combustion chamber is to be desorbed gas as combustion gas, (the T within the scope of 200-600 DEG C1) can be by desorption gas burning point Solution is CO2And H2O.After catalytic combustion system temperature is more than 600 DEG C, cold blast sliding valve 8 is opened, while opening in line by-passing valve 12.It is logical The temperature crossed in the two valve regulateds control catalytic combustor is no more than 600 DEG C, and combustion chamber is made to be in optimum state.Test into Enter 2 air in pipeline temperature of exhaust gas adsorption device, blower 9 is mended in regulation, makes to be sent into the gas temperature being desorbed in 120-150 DEG C of model It encloses, makes desorption temperature control in certain safe range, redundance exhaust gas send chimney direct emission by line by-passing valve 12.It urges Changing such as abnormal conditions of burner 6 increases burning intraventricular pressure, and PLC robot control system(RCS) would automatically turn on cold blast sliding valve 8, it is ensured that be System safety.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims (5)

  1. The processing system 1. a kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing burns, it is characterised in that:
    Including preprocessor, exhaust gas adsorption device, absorption blower, chimney, heat exchanger, desorption blower, cold blast sliding valve, catalysis burning dress It sets, fire arrester, mend air-valve and PLC robot control system(RCS);
    The exhaust end of the preprocessor is connected to by the pipeline with intake valve with the inlet end of exhaust gas adsorption device, exhaust gas absorption The exhaust end of device is connected to by the pipeline with exhaust valve with the air inlet of absorption blower, the exhaust end setting of exhaust gas adsorption device There is concentration monitor, the exhaust outlet for adsorbing blower is connected to chimney;
    Heating heat exchanger channels and cooling heat exchanger channels are formed in the heat exchanger, exhaust gas adsorption device passes through band and is catalyzed burning charge The pipeline of valve is connected to the inlet end of heating heat exchanger channels, and the inlet end for the heat exchanger channels that heat up is also connected with the cold wind with cold blast sliding valve Channel, heating heat exchanger channels are interior to be arranged having heaters, and the exhaust end for the heat exchanger channels that heat up and the inlet end of catalytic combustion system connect It is logical;
    The exhaust end of catalytic combustion system is connected to the inlet end of fire arrester, the exhaust end of fire arrester and the air inlet of desorption blower Be connected with the mend wind passage with benefit air-valve on connection, fire arrester and the pipeline that be connected to of desorption blower, be desorbed blower exhaust outlet and The inlet end connection of cooling heat exchanger channels, the exhaust end for the heat exchanger channels that cool down passes through the pipeline in line by-passing valve respectively and band is urged The pipeline for changing burning and gas-exhausting valve is connected to chimney and exhaust gas adsorption device.
  2. The processing system 2. VOCs exhaust-gas efficient adsorption/desorption catalyzing according to claim 1 burns, it is characterised in that: described Exhaust gas adsorption device includes at least two waste gas absorbers arranged side by side.
  3. The processing system 3. VOCs exhaust-gas efficient adsorption/desorption catalyzing according to claim 2 burns, it is characterised in that: also wrap Include adsorption temp sensor, catalysis ignition temperature sensor and desorption gas temperature sensor.
  4. The processing system 4. VOCs exhaust-gas efficient adsorption/desorption catalyzing according to claim 1 to 3 burns, it is special Sign is: the combustion chamber of catalytic combustion system is provided with benefit air valve.
  5. The processing system 5. VOCs exhaust-gas efficient adsorption/desorption catalyzing according to claim 4 burns, it is characterised in that: each It is provided with gas flowmeter on a airflow line, air gauge is provided in each airflow line and gas reaction chamber and temperature is surveyed Measure instrument.
CN201821237255.XU 2018-08-02 2018-08-02 A kind of VOCs exhaust-gas efficient adsorption/desorption catalyzing burning processing system Active CN208824192U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110694602A (en) * 2019-10-25 2020-01-17 航天凯天环保科技股份有限公司 Adsorbing material desorption regeneration system
CN111013324A (en) * 2019-12-30 2020-04-17 苏州艾特斯环保设备有限公司 Concentration method of organic waste gas
CN111921541A (en) * 2020-09-17 2020-11-13 中南大学 Platinum-iron alloy catalyst, preparation method thereof and application thereof in catalytic oxidation of VOCs (volatile organic compounds)
CN112354342A (en) * 2020-07-17 2021-02-12 万向一二三股份公司 Lithium ion battery electrolyte waste gas treatment device and system
CN113230817A (en) * 2021-06-15 2021-08-10 刘景华 Organic waste gas series treatment process
WO2022151699A1 (en) * 2021-01-14 2022-07-21 航天凯天环保科技股份有限公司 Combined modular integrated machine for efficient purification of exhaust gas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110694602A (en) * 2019-10-25 2020-01-17 航天凯天环保科技股份有限公司 Adsorbing material desorption regeneration system
CN111013324A (en) * 2019-12-30 2020-04-17 苏州艾特斯环保设备有限公司 Concentration method of organic waste gas
CN112354342A (en) * 2020-07-17 2021-02-12 万向一二三股份公司 Lithium ion battery electrolyte waste gas treatment device and system
CN111921541A (en) * 2020-09-17 2020-11-13 中南大学 Platinum-iron alloy catalyst, preparation method thereof and application thereof in catalytic oxidation of VOCs (volatile organic compounds)
CN111921541B (en) * 2020-09-17 2021-06-22 中南大学 Platinum-iron alloy catalyst, preparation method thereof and application thereof in catalytic oxidation of VOCs (volatile organic compounds)
WO2022151699A1 (en) * 2021-01-14 2022-07-21 航天凯天环保科技股份有限公司 Combined modular integrated machine for efficient purification of exhaust gas
CN113230817A (en) * 2021-06-15 2021-08-10 刘景华 Organic waste gas series treatment process

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