CN208824192U - A high-efficiency adsorption and desorption catalytic combustion treatment system for VOCs waste gas - Google Patents
A high-efficiency adsorption and desorption catalytic combustion treatment system for VOCs waste gas Download PDFInfo
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Incineration Of Waste (AREA)
- Treating Waste Gases (AREA)
Abstract
本实用新型公开了一种VOCs废气高效吸附脱附催化燃烧处理系统，包括预处理器、废气吸附装置、吸附风机、烟囱、换热器、脱附风机、冷风阀、催化燃烧装置、阻火器、补风阀和PLC自控系统，所述废气吸附装置对废气进行吸附净化处理，若浓度达标，则在吸附风机抽送作用下经烟囱排出，若浓度不达标，则对吸附塔进行脱附，脱附后尾气进行催化燃烧处理，因此，采用本申请的废气处理系统，实现了对有机废气的吸附—脱附浓缩—催化燃烧联合协同处理，不仅能够高效集中处理有机废气，而且充分利用燃烧所释放的热能，从而降低了综合能耗，该系统能处理大风量多种类低浓度的有机废气，具备广泛的应用范围。
The utility model discloses a high-efficiency adsorption and desorption catalytic combustion treatment system for VOCs waste gas, which comprises a pretreatment device, a waste gas adsorption device, an adsorption fan, a chimney, a heat exchanger, a desorption fan, a cold air valve, a catalytic combustion device, a flame arrester, Air supply valve and PLC automatic control system, the exhaust gas adsorption device performs adsorption and purification treatment on the exhaust gas. If the concentration reaches the standard, it will be discharged through the chimney under the action of the adsorption fan. If the concentration does not meet the standard, the adsorption tower will be desorbed and desorbed The rear exhaust gas is subjected to catalytic combustion treatment. Therefore, the use of the exhaust gas treatment system of the present application realizes the combined treatment of adsorption, desorption concentration, and catalytic combustion of organic waste gas, which can not only efficiently and centrally treat organic waste gas, but also make full use of the organic waste gas released by combustion. The system can deal with various types of low-concentration organic waste gas with large air volume, and has a wide range of applications.
Description
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)
- 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.
- 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.
- 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.
- 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.
- 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821237255.XU CN208824192U (en) | 2018-08-02 | 2018-08-02 | A high-efficiency adsorption and desorption catalytic combustion treatment system for VOCs waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821237255.XU CN208824192U (en) | 2018-08-02 | 2018-08-02 | A high-efficiency adsorption and desorption catalytic combustion treatment system for VOCs waste gas |
Publications (1)
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| CN110237649A (en) * | 2019-07-26 | 2019-09-17 | 中山市迦南节能环保科技有限公司 | VOC exhaust gas total system |
| CN110479038A (en) * | 2019-09-04 | 2019-11-22 | 爱润森德（天津）能源科技有限公司 | A kind of exhaust treatment system and processing method suitable for coal chemical industry |
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| CN110237649A (en) * | 2019-07-26 | 2019-09-17 | 中山市迦南节能环保科技有限公司 | VOC exhaust gas total system |
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