CN211837162U - Movable device for treating VOC-containing waste gas - Google Patents
Movable device for treating VOC-containing waste gas Download PDFInfo
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- CN211837162U CN211837162U CN202020009248.5U CN202020009248U CN211837162U CN 211837162 U CN211837162 U CN 211837162U CN 202020009248 U CN202020009248 U CN 202020009248U CN 211837162 U CN211837162 U CN 211837162U
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- 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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- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model belongs to the technical field of waste gas treatment, a portable device that contains VOC waste gas of handling is related to. The device includes: the device comprises a heat exchange unit (1), a cooling deodorization unit (2), a membrane separation unit (3) and a pressure swing adsorption unit (4) which are communicated in sequence; wherein the membrane separation unit (3) is communicated with an air inlet line of the cooling and deodorizing unit (2); the heat exchange unit (1), the cooling deodorization unit (2), the membrane separation unit (3) and the pressure swing adsorption unit (4) are arranged on a base. The device can remove in a flexible way, and to the parking maintenance steam sweep tail gas, high temperature high concentration's VOC waste gas carries out the original place promptly and handles, finally realizes effectively administering the VOC waste gas that contains.
Description
Technical Field
The utility model belongs to the technical field of the waste gas treatment, more specifically relates to a device that contains VOC waste gas is handled to movable type.
Background
The treatment method of the waste gas containing Volatile Organic Compounds (VOC) in the tank field comprises the following steps:
condensation method
The condensation method is to introduce the VOC-containing waste gas in the tank field into a condensing apparatus to reduce the temperature of the waste gas, and to separate the organic matter from the gas phase main body by liquefaction according to the difference in boiling point of the organic matter, thereby recovering the organic matter of useful value and purifying the gas phase main body. The method is suitable for the working conditions of high VOC concentration and small air volume in the waste gas. The method has the advantages of high investment cost, high operating cost, low treatment efficiency and high maintenance cost.
Second, adsorption method
Utilize the fan to contain in the VOC waste gas introduces pressure swing adsorption equipment, load the adsorbent in the adsorption tank, most adsorbents adopt active carbon, make the adsorbent contact in waste gas and the adsorption tank, take place the physical adsorption reaction, make a large amount of VOC molecular adsorption on the adsorbent to reach the effect of purifying waste gas. When high-concentration VOC waste gas enters, the adsorbent can generate temperature runaway, coking is generated on the adsorbent, the service life of the adsorbent is greatly shortened, and the economic burden of a using unit is increased. Therefore, this method is not suitable for high-concentration VOC exhaust gas, but is suitable for low-concentration VOC exhaust gas.
Third, membrane separation technology
The membrane separation technology is a technology which utilizes different gas molecules with different permeation rates through a membrane, wherein gas with high permeation rate is enriched on a permeation side, and gas with low permeation rate is enriched on a raw material side, so that separated waste gas is formed. However, this method cannot be used alone, and must be used in combination with other processes to achieve the purpose of effectively treating the VOC-containing waste gas.
Fourthly, heat treatment method
The heat treatment technology mainly refers to a combustion method. The method has high pollutant removing efficiency and good effect, and can almost treat all hydrocarbon organic waste gas and malodorous gas. Common combustion methods are regenerative combustion and catalytic combustion.
Regenerative combustion refers to the process of purifying exhaust gas by oxidizing volatile organic compounds in the exhaust gas with oxygen in the air in a high temperature environment (about 815 ℃) in an oxidation furnace to produce water and carbon dioxide, which are discharged into the atmosphere. However, regenerative combustion is not suitable for exhaust gas with low concentration, for example, the intake gas concentration is low, the released reaction heat is insufficient, the combustion temperature cannot be reached, additional energy needs to be supplemented, or a concentration pretreatment unit is added to improve the concentration of organic matters in the intake gas, so that the economy of the exhaust gas with low concentration is poor; in addition, the reaction temperature of regenerative combustion is high, certain potential safety hazards exist, the investment cost is high, and the occupied area is large.
The catalytic combustion is to oxidize combustible components in the waste gas into CO under the action of a catalyst at a lower temperature, usually 200-400 DEG C2And H2And O, achieving the purpose of purifying the gas. Compared with regenerative combustion, catalytic combustion has relatively low temperature and high safety, but also has the problem of air inlet concentration, and is not suitable for treating low-concentration waste gas. If the waste gas contains substances such as sulfur, halogen and the like, the catalyst is easy to be poisoned, the removal rate of pollutants is obviously reduced, and even the waste gas is inactivated without treatment effect; the catalyst replacement cost is high, and the investment and operation cost is high.
Plasma method
The plasma method is a new technology for treating malodorous gas. The technology utilizes embedded electrodes on a high-purity metal substrate, a grounding electrode is pressed in the substrate to form an ion generating sheet or ion generating tube, then high-frequency high-voltage alternating current is applied, discharge is developed along the surface of the substrate near the electrodes, a large amount of alpha particles can be generated, and the alpha particles are contacted with oxygen in the air to generate a large amount of positive and negative oxygen ions and strong oxidizing free radicals such as O, OH and HO2And the like. The ions, free radicals and excited molecules are all very high in chemical activity and can convert H in a short time2S、NH3、CH3SH、VOCSOrganic matter molecules in the pollutants are oxidized and decomposed into harmless micromolecular substances, mainly CO2And H2And O, finally achieving the purpose of purifying the malodorous gas. The plasma technology for treating malodorous gas mainly has the following problems: the operation cost and the energy consumption are high, and the service life of the ion tube is still under examination; possibly causing secondary pollution, e.g. SO2，NOxAnd CO, and the like. The industrial application of the plasma technology for treating malodorous gas is limited due to the existence of the problems.
Sixth, biological method
The biological treatment method is used for treating waste gas containing organic matters, and microorganisms take the organic matters in the waste gas as energy or nutrients for life activities of the microorganisms and carry out biodegradation on the organic matters by utilizing the metabolism process of the microorganisms, so that macromolecular organic matters in the waste gas are converted into micromolecular inorganic matters. The biological method is a harmless organic waste gas treatment mode, has simple process equipment, low investment and operation cost, does not produce secondary pollution, but has poor treatment effect on VOC with higher concentration, and is more suitable for treating organic waste gas with higher gas quantity and lower concentration.
The inventor is realizing the utility model discloses the time, through many times investigation and communication refining enterprise, like china petrochemical industry, china oil, these refining enterprise ubiquitous device parking maintenance in-process, steam sweeps collection tank deck exhaust and partial pipeline waste gas direct vent problem during overhauing steam sweep. Along with the prolonging of the steam purging time, the temperature of the medium in the steam purging pipeline rises, the volatilization amount of light components (containing malodorous gas) increases, and the steam purging medium enters the steam purging tank from the top of the storage tank and is continuously discharged to the atmosphere through the vent hole on the top of the tank, so that the unpleasant odor in the air is diffused during the steam purging. Although the discharge time of the mixture of the high-temperature steam, the VOCs and the malodorous gas is short, the mixture has high concentration, large odor, high temperature, complex composition and unfixed discharge point, and belongs to the waste gas which is difficult to treat.
Therefore, for the treatment of VOC-containing waste gas in a tank farm, a device for treating high-temperature and high-concentration VOC waste gas in situ in the tank farm is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a handle device of high temperature high concentration VOC waste gas in situ at tank field.
In order to realize the purpose, the utility model provides a device that contains VOC waste gas is handled to movable type. The device includes: the heat exchange unit, the cooling deodorization unit, the membrane separation unit and the pressure swing adsorption unit are sequentially communicated;
wherein the membrane separation unit is in communication with an air intake line of the cooling and deodorizing unit;
the heat exchange unit, the cooling deodorization unit, the membrane separation unit and the pressure swing adsorption unit are arranged on a base.
Specifically, the cooling deodorization unit includes: the device comprises a cooling spray tower, a deodorization spray tower, a first circulating pump, a second circulating pump, an alkali liquor storage tank and a biological deodorant storage tank;
the heat exchange unit, the cooling spray tower, the deodorization spray tower and the membrane separation unit are communicated in sequence;
the first circulating pump and the alkali liquor storage tank are respectively communicated with the cooling spray tower;
the second circulating pump and the biological deodorant storage tank are respectively communicated with the deodorization spray tower; or
The cooling deodorization unit includes: a cooling deodorization spray tower, a third circulating pump and a biological deodorant storage tank;
the biological deodorant storage tank and the third circulating pump are respectively communicated with the cooling and deodorizing spray tower.
More specifically, a first dosing pump is arranged on a pipeline for communicating the alkali liquor storage tank with the cooling spray tower;
and a second dosing pump is arranged on a pipeline for communicating the biological deodorant storage tank with the cooling and deodorizing spray tower.
More specifically, the cooling deodorization unit further includes: a compressor and an oil-water separator; the air inlet end of the compressor is communicated with the heat exchange unit and the membrane separation unit, and the air outlet end of the compressor is communicated with the cooling spray tower;
the liquid inlet end of the oil-water separator is communicated with the bottom of the cooling spray tower, and the liquid outlet end of the oil-water separator is communicated with the bottom of the deodorization spray tower.
More specifically, a pH controller is arranged in the deodorization spray tower and is used for controlling alkali liquor and biological deodorant in the biological deodorant storage tank to flow into the deodorization spray tower.
More specifically, the cooling spray tower and the deodorization spray tower are both internally provided with at least one filler, and a plurality of spray heads communicated with the first circulating pump or the second circulating pump are arranged above each filler.
Specifically, the membrane separation unit includes: the demisting device, the membrane component, the vacuum pump and the condenser are sequentially communicated;
the demisting device is communicated with an air outlet pipeline of the cooling and deodorizing unit;
the condenser is communicated with an air inlet pipeline of the cooling and deodorizing unit;
the membrane module is communicated with the pressure swing adsorption unit; or
The membrane separation unit comprises: the demisting device, the condenser, the membrane component and the vacuum pump are communicated in sequence;
the demisting device is communicated with an air outlet pipeline of the cooling and deodorizing unit;
the vacuum pump is communicated with an air inlet pipeline of the cooling and deodorizing unit;
the membrane module is communicated with the pressure swing adsorption unit.
More specifically, the membrane module is a plurality of membrane modules, the membrane modules are connected in series, each membrane module is a spiral wound membrane module, and the membrane modules are sealed by adopting concave-convex grooves.
Specifically, the pressure swing adsorption unit includes: a first activated carbon adsorption device and a second activated carbon adsorption device;
the gas inlet of the first activated carbon adsorption device is communicated with the gas inlet of the second activated carbon adsorption device through a pipeline, and a first valve is arranged on the pipeline;
the gas outlet of the first activated carbon adsorption device is communicated with the gas outlet of the second activated carbon adsorption device through a pipeline, and a second valve is arranged on the pipeline;
the air inlet of the first active carbon adsorption device and the air inlet of the second active carbon adsorption device are both communicated with the air outlet pipeline of the membrane separation unit;
the specific surface areas of the activated carbon of the first activated carbon adsorption device and the activated carbon of the second activated carbon adsorption device are both 800-1400 m2The pore volume is 0.4-0.9 mL/g. The first active carbon adsorption device and the second active carbon adsorption device alternately perform adsorption and desorption.
More specifically, the pressure swing adsorption unit further comprises: a resin adsorption device; and the air inlet of the resin adsorption device is communicated with the air outlet of the first activated carbon adsorption device and the air outlet of the second activated carbon adsorption device.
More specifically, the resin in the resin adsorption device is spherical resin of JF-VOCs-200 type, and the particle size of the resin is 0.1-0.2 mm.
Specifically, the heat exchange unit includes: and the air-cooled heat exchanger is communicated with the cooling and deodorizing unit.
The utility model provides a device that contains VOC waste gas is handled to movable type, can remove in a flexible way, steam sweeps tail gas to the parking maintenance, the VOC waste gas of high temperature high concentration carries out original place processing promptly, earlier through heat transfer unit preliminary cooling, continue cooling and get rid of foul gas such as mercaptan thioether wherein through cooling deodorization unit again, then further get rid of the VOC gas through membrane separation unit, the liquid of production returns cooling deodorization unit circulation and handles, the VOC gas is further got rid of again by the pressure swing adsorption unit to the residual gas at last, finally realize effectively administering to containing the VOC waste gas.
The utility model provides a device of portable VOC waste gas that contains, steam through interim pipeline parking maintenance in-process sweeps tail gas, contain VOC waste gas promptly and get into heat transfer unit and tentatively cool down, get into the cooling spray column, alkali lye carries out spray cooling and alkali wash to VOC waste gas in the cooling spray column, water vapor condensation wherein, the liquefaction of polymer organic matter, acid gas reacts with alkali wash, the liquid phase retrieves the oil behind oil water separator, get into the deodorization spray column afterwards, the gaseous phase in the cooling spray column also gets into the deodorization spray column, spray through the biological deodorant, get rid of remaining foul gas in the waste gas, mainly have mercaptan thioether etc., continue to reduce the temperature of waste gas simultaneously; and then the waste gas enters a demisting device, water vapor in the waste gas is removed in a fogdrop mode, then the residual gas enters a membrane separation unit, the residual organic matters penetrate through a membrane module under the action of a vacuum pump to form concentrated gas, then the concentrated gas enters a condenser for condensation and returns to a cooling and deodorizing unit, and the low-concentration VOC waste gas on the retentate side of the membrane module enters a pressure swing adsorption unit for advanced treatment.
The utility model provides a portable device that contains VOC waste gas through the pH controller that sets up in the deodorization spray column, through the pH value in the monitoring deodorization spray column, controls biological deodorant in the biological deodorant holding vessel flows into the deodorization spray column.
The utility model provides a device that contains VOC waste gas is handled to movable type, in the pressure swing adsorption unit, through the harmful substance in first active carbon adsorption device and the alternate absorption waste gas of second active carbon adsorption device with sweep the desorption, not only adsorption efficiency is high, can also increase the life of active carbon in first active carbon adsorption device and the second active carbon adsorption device to increase the device's life.
The utility model provides a device that contains VOC waste gas is handled to movable type still includes resin adsorption equipment at the pressure swing adsorption unit and further gets rid of the harmful substance in the VOC waste gas.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic diagram of a mobile device for treating VOC-containing waste gas according to the present invention.
Fig. 2 shows a schematic diagram of another mobile VOC-containing waste gas treatment device provided by the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein.
The utility model provides a portable device of handling VOC waste gas. Referring to fig. 1, fig. 1 is a schematic view illustrating a mobile device for treating VOC-containing waste gas according to the present invention. As shown in fig. 1, the apparatus includes: the heat exchange unit 1, the cooling deodorization unit 2, the membrane separation unit 3 and the pressure swing adsorption unit 4 are communicated in sequence; wherein the membrane separation unit 3 is in communication with the air intake line of the cooling and deodorizing unit 2; the heat exchange unit 1, the cooling deodorization unit 2, the membrane separation unit 3, and the pressure swing adsorption unit 4 connected in series are disposed on one base (not shown in fig. 1).
The utility model provides a portable device theory of operation who handles VOC waste gas is:
the utility model provides a device that contains VOC waste gas is handled to movable type, can remove in a flexible way, sweep tail gas to the parking maintenance steam, the VOC waste gas of high temperature high concentration carries out original place processing promptly, earlier through 1 preliminary cooling of heat transfer unit, continue cooling and get rid of foul gas such as mercaptan thioether wherein through cooling deodorization unit 2 again, then further get rid of the VOC gas through membrane separation unit 3, the liquid of production returns cooling deodorization unit 2 circulation and handles, the VOC gas is further got rid of again by pressure swing adsorption unit 4 to the residual gas at last, finally realize effectively administering to containing VOC waste gas.
In the present invention, please refer to fig. 2, fig. 2 shows a schematic diagram of another mobile device for treating VOC-containing waste gas according to the present invention. As shown in fig. 2, the heat exchange unit 1 includes: and the air-cooled heat exchanger 101, wherein the air-cooled heat exchanger 101 is communicated with the cooling and deodorizing unit 2. The temperature of the VOC-containing waste gas can be reduced to less than 100 ℃ through the temperature reduction treatment of the air-cooled heat exchanger 101.
In the present invention, please continue to refer to fig. 2, the first structural form of the cooling and deodorizing unit is: the cooling deodorization unit 2 may include: a cooling spray tower 201, a deodorization spray tower 202, a first circulating pump 203, a second circulating pump 204, an alkali liquor storage tank 205 and a biological deodorant storage tank 206; the heat exchange unit 1, the cooling spray tower 201, the deodorizing spray tower 202 and the membrane separation unit 3 are communicated in sequence; the first circulating pump 203 and the lye storage tank 205 are respectively communicated with the cooling spray tower 201; the second circulation pump 204 and the biological deodorant storage tank 206 are respectively communicated with the deodorizing spray tower 202. By spraying through the cooling spray tower 201, most of the acid gas in the VOC-containing waste gas is removed, and the temperature of the residual waste gas can be reduced to less than 60 ℃.
In the present invention, the second structure of the cooling and deodorizing unit is: the cooling deodorization unit includes: a cooling deodorization spray tower, a third circulating pump and a biological deodorant storage tank; the biological deodorant storage tank and the third circulating pump are respectively communicated with the cooling and deodorizing spray tower.
Further, the cooling and deodorizing unit 2 further includes: a compressor 207 and an oil-water separator 208; the air inlet end of the compressor 207 is communicated with the heat exchange unit 1 and the membrane separation unit 3, and the air outlet end of the compressor 207 is communicated with the cooling spray tower 201; the liquid inlet end of the oil-water separator 208 is communicated with the bottom of the cooling spray tower 201, and the liquid outlet end is communicated with the bottom of the deodorization spray tower 202. The compressor can make the VOC waste gas smoothly get into cooling spray tower 201 in the heat transfer unit, cool off and alkali wash. The liquid phase in the cooling spray tower 201 enters the oil-water separator 208, and enters the deodorization spray tower 202 for further treatment after oil removal treatment. The utility model provides an oil water separator removes oil through profit density difference and handles.
To the structure of the cooling spray tower and the deodorization spray tower in the utility model, be provided with the pH controller in the deodorization spray tower 202, the pH controller control biological deodorant in the biological deodorant holding vessel 206 flows in the deodorization spray tower 202. The pH controller can automatically add the biological deodorant into the deodorization spray tower. The cooling spray tower 201 and the deodorization spray tower 202 are internally provided with at least one filler, a plurality of spray heads communicated with the first circulating pump or the second circulating pump are arranged above each filler, so that gas and liquid are fully contacted and mixed, chemical reaction is more fully performed, and VOC and the like in waste gas are quickly removed.
In the present invention, please continue to refer to fig. 2, one structural form of the membrane separation unit is: the membrane separation unit 3 may include: a demisting device 301, a membrane component 302, a vacuum pump 303 and a condenser 304 which are communicated in sequence; the demisting device 301 is communicated with an air outlet pipeline of the cooling and deodorizing unit 2; the condenser 304 is in communication with the air intake line of the cooling and deodorizing unit 2; the membrane module 302 is in communication with the pressure swing adsorption unit 4. Most of moisture in the residual waste gas is removed by the defogging device, and then the residual waste gas is concentrated and separated by the membrane component, most of the gas after concentration and separation enters the next unit to continuously remove VOC, and the liquid and a small part of the gas are cooled and then return to the cooling spray tower for circular treatment.
In the present invention, another structure of the membrane separation unit is: the membrane separation unit 3 includes: the demisting device, the condenser, the membrane component and the vacuum pump are communicated in sequence; the demisting device is communicated with an air outlet pipeline of the cooling and deodorizing unit; the vacuum pump is communicated with an air inlet pipeline of the cooling and deodorizing unit; the membrane module is communicated with the pressure swing adsorption unit.
The utility model provides a membrane module's concrete expression form can be: the membrane component is a plurality of membrane components which are connected in series, and each membrane component is a spiral-wound membrane component and is sealed by adopting a concave-convex groove.
In the present invention, the pressure swing adsorption unit 4 includes: the gas inlet of the first activated carbon adsorption device is communicated with the gas inlet of the second activated carbon adsorption device through a pipeline, and a first valve is arranged on the pipeline; the gas outlet of the first activated carbon adsorption device is communicated with the gas outlet of the second activated carbon adsorption device through a pipeline, and a second valve is arranged on the pipeline; and the air inlet of the first active carbon adsorption device and the air inlet of the second active carbon adsorption device are communicated with the air outlet pipeline of the membrane separation unit. Through the alternative absorption of harmful substance in the waste gas of first active carbon adsorption device and second active carbon adsorption device and sweep the desorption, not only adsorption efficiency is high, can also increase the life of active carbon in first active carbon adsorption device and the second active carbon adsorption device to increase the device's life.
The utility model discloses in, first active carbon adsorption device with the specific surface area of the active carbon in the second active carbon adsorption device is 800 ~ 1400m2The pore volume is 0.4-0.9 mL/g. The activated carbon with the characteristics reduces the reaction probability of the acidic oxygen-containing groups and components in oil gas, ensures the adsorption capacity, has excellent adsorption and desorption performances on oil gas molecules, is more stable in adsorption capacity and more thorough in desorption, and is slow in temperature rise, low in adsorption heat, difficult to coke in a bed layer and high in safety.
In the present invention, the pressure swing adsorption unit 4 further includes: and the air inlet of the resin adsorption device is communicated with the air outlet of the first activated carbon adsorption device and the air outlet of the second activated carbon adsorption device. The resin in the resin adsorption device is spherical resin of JF-VOCs-200 type, and the particle size of the resin is 0.1-0.2 mm.
Example 1
The embodiment provides a device for mobile treatment of VOC-containing waste gas. Referring to fig. 1 and 2, the apparatus includes: the heat exchange unit 1, the cooling deodorization unit 2, the membrane separation unit 3 and the pressure swing adsorption unit 4 are communicated in sequence; wherein the membrane separation unit 3 is in communication with the air intake line of the cooling and deodorizing unit 2; the heat exchange unit 1, the cooling deodorization unit 2, the membrane separation unit 3, and the pressure swing adsorption unit 4 are disposed on one base (not shown in fig. 2).
The heat exchange unit 1 includes an air-cooled heat exchanger 101. The cooling deodorization unit 2 includes: a compressor 207, a cooling spray tower 201, a deodorization spray tower 202, a first circulating pump 203, a second circulating pump 204, an alkali liquor storage tank 205 and a biological deodorant storage tank 206; the heat exchange unit 1, the cooling spray tower 201, the deodorizing spray tower 202 and the membrane separation unit 3 are communicated in sequence; the first circulating pump 203 and the lye storage tank 205 are respectively communicated with the cooling spray tower 201; the second circulation pump 204 and the biological deodorant storage tank 206 are respectively communicated with the deodorizing spray tower 202. A pH controller is arranged in the deodorizing spray tower 202, and the pH controller controls the biological deodorant in the biological deodorant storage tank 206 to flow into the deodorizing spray tower 202. The air-cooled heat exchanger 101 communicates with a compressor 207. The membrane separation unit 3 includes: a demisting device 301, a membrane component 302, a vacuum pump 303 and a condenser 304 which are communicated in sequence; the demisting device 301 is communicated with an air outlet pipeline of the cooling and deodorizing unit 2; the condenser 304 is communicated with the air inlet end of the compressor 207; the membrane module 302 is in communication with the pressure swing adsorption unit 4. The deodorizing spray tower 202 communicates with the defogging device 301. The pressure swing adsorption unit 4 includes: a first activated carbon adsorption device, a second activated carbon adsorption device, and a resin adsorption device (not shown in fig. 2); the gas inlet of the first activated carbon adsorption device is communicated with the gas inlet of the second activated carbon adsorption device through a pipeline, and a first valve is arranged on the pipeline; the gas outlet of the first activated carbon adsorption device is communicated with the gas outlet of the second activated carbon adsorption device through a pipeline, and a second valve is arranged on the pipeline; the air inlet of the first active carbon adsorption device and the air inlet of the second active carbon adsorption device are both communicated with the air outlet pipeline of the membrane separation unit; the specific surface areas of the activated carbon in the first activated carbon adsorption device and the activated carbon in the second activated carbon adsorption device are both 800-1400 m2The volume of each pore is 0.4-0.9 mL/g; the air inlet of the resin adsorption device and the outlet of the first active carbon adsorption deviceThe gas port is communicated with the gas outlet of the second active carbon adsorption device.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A mobile VOC emission treatment apparatus, comprising: the device comprises a heat exchange unit (1), a cooling deodorization unit (2), a membrane separation unit (3) and a pressure swing adsorption unit (4) which are communicated in sequence;
wherein the membrane separation unit (3) is communicated with an air inlet line of the cooling and deodorizing unit (2);
the heat exchange unit (1), the cooling deodorization unit (2), the membrane separation unit (3) and the pressure swing adsorption unit (4) are arranged on a base.
2. The device according to claim 1, characterized in that said cooling and deodorizing unit (2) comprises: a cooling spray tower (201), a deodorization spray tower (202), a first circulating pump (203), a second circulating pump (204), an alkali liquor storage tank (205) and a biological deodorant storage tank (206);
the heat exchange unit (1), the cooling spray tower (201), the deodorization spray tower (202) and the membrane separation unit (3) are communicated in sequence;
the first circulating pump (203) and the alkali liquor storage tank (205) are respectively communicated with the cooling spray tower (201);
the second circulating pump (204) and the biological deodorant storage tank (206) are respectively communicated with the deodorization spray tower (202); or
The cooling deodorization unit includes: a cooling deodorization spray tower, a third circulating pump and a biological deodorant storage tank;
the biological deodorant storage tank and the third circulating pump are respectively communicated with the cooling and deodorizing spray tower.
3. The device according to claim 2, wherein the cooling and deodorizing unit (2) further comprises: a compressor (207) and an oil-water separator (208);
the air inlet end of the compressor (207) is communicated with the heat exchange unit (1) and the membrane separation unit (3), and the air outlet end of the compressor (207) is communicated with the cooling spray tower (201);
the liquid inlet end of the oil-water separator (208) is communicated with the bottom of the cooling spray tower (201), and the liquid outlet end of the oil-water separator is communicated with the bottom of the deodorization spray tower (202).
4. The apparatus according to claim 2, wherein a pH controller is provided in the deodorizing spray tower (202) for controlling the flow of the biological deodorant in the biological deodorant storage tank (206) into the deodorizing spray tower (202).
5. The apparatus according to claim 2, wherein the cooling spray tower (201) and the deodorizing spray tower (202) are each provided with at least one packing, and a plurality of spray heads communicating with the first circulation pump or the second circulation pump are provided above each packing.
6. The device according to claim 1, wherein the membrane separation unit (3) comprises: the demisting device (301), the membrane component (302), the vacuum pump (303) and the condenser (304) are communicated in sequence;
the demisting device (301) is communicated with an air outlet pipeline of the cooling and deodorizing unit (2);
the condenser (304) is in communication with an air intake line of the cooling and deodorizing unit (2);
the membrane module (302) is communicated with the pressure swing adsorption unit (4); or
The membrane separation unit (3) comprises: the demisting device, the condenser, the membrane component and the vacuum pump are communicated in sequence;
the demisting device is communicated with an air outlet pipeline of the cooling and deodorizing unit;
the vacuum pump is communicated with an air inlet pipeline of the cooling and deodorizing unit;
the membrane module is communicated with the pressure swing adsorption unit.
7. The apparatus according to claim 6, wherein the membrane module is a plurality of membrane modules, the plurality of membrane modules are connected in series, each membrane module is a rolled membrane module, and the membrane modules are sealed by using concave-convex grooves.
8. The apparatus according to claim 1, wherein the pressure swing adsorption unit (4) comprises: a first activated carbon adsorption device and a second activated carbon adsorption device;
the gas inlet of the first activated carbon adsorption device is communicated with the gas inlet of the second activated carbon adsorption device through a pipeline, and a first valve is arranged on the pipeline;
the gas outlet of the first activated carbon adsorption device is communicated with the gas outlet of the second activated carbon adsorption device through a pipeline, and a second valve is arranged on the pipeline;
the air inlet of the first active carbon adsorption device and the air inlet of the second active carbon adsorption device are both communicated with the air outlet pipeline of the membrane separation unit;
the specific surface areas of the activated carbon in the first activated carbon adsorption device and the activated carbon in the second activated carbon adsorption device are both 800-1400 m2The pore volume is 0.4-0.9 mL/g.
9. The apparatus of claim 8, wherein the pressure swing adsorption unit (4) further comprises: a resin adsorption device;
and the air inlet of the resin adsorption device is communicated with the air outlet of the first activated carbon adsorption device and the air outlet of the second activated carbon adsorption device.
10. The apparatus according to claim 1, characterized in that the heat exchange unit (1) comprises: and the air-cooled heat exchanger (101), and the air-cooled heat exchanger (101) is communicated with the cooling and deodorizing unit (2).
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| CN202020009248.5U CN211837162U (en) | 2020-01-03 | 2020-01-03 | Movable device for treating VOC-containing waste gas |
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| CN202020009248.5U CN211837162U (en) | 2020-01-03 | 2020-01-03 | Movable device for treating VOC-containing waste gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939337A (en) * | 2022-04-11 | 2022-08-26 | 北京安星达环保技术发展有限公司 | Comprehensive treatment method for organic volatile matters of refining enterprises |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939337A (en) * | 2022-04-11 | 2022-08-26 | 北京安星达环保技术发展有限公司 | Comprehensive treatment method for organic volatile matters of refining enterprises |
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