CN105597487A - Method for performing adsorptive enrichment treatment on VOCs (Volatile Organic Compounds) by virtue of zeolite molecular sieve - Google Patents
Method for performing adsorptive enrichment treatment on VOCs (Volatile Organic Compounds) by virtue of zeolite molecular sieve Download PDFInfo
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- CN105597487A CN105597487A CN201610151897.7A CN201610151897A CN105597487A CN 105597487 A CN105597487 A CN 105597487A CN 201610151897 A CN201610151897 A CN 201610151897A CN 105597487 A CN105597487 A CN 105597487A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a method for performing adsorptive enrichment treatment on VOCs (Volatile Organic Compounds) by virtue of a zeolite molecular sieve. The method comprises the following specific steps: performing contact adsorption on a gas containing VOCs by use of the zeolite molecular sieve which is composed of aluminosilicate AlO4 and SiO4 crystals and serves as an adsorbent so as to ensure that a great amount of VOCs are condensed at the surface of the zeolite molecular sieve, and discharging purified air; concentrating the VOCs adsorbed to the zeolite molecular sieve by use of hot air at a temperature of 180-210 DEG C, and separating and recycling the concentrated VOCs from the zeolite molecular sieve; and finally cooling the zeolite molecular sieve to 23 DEG C, so as to ensure that the zeolite molecular sieve is re-activated to be recycled. The method for adsorbing VOCs in production tail gas and manufacturing shops is simple, is capable of efficiently treating the VOCs gas contained in air, and concentrating and recycling the VOCs with high recovery rate; the zeolite molecular sieve is re-activated to be recycled, so that the cost is low, efficient purification and recycling are realized, and the method has a favorable prospect in aspects of energy conservation and environmental conservation.
Description
Technical field
The present invention relates to a kind of zeolite molecular sieve Adsorption Concentration and process the method for VOC, belong to large compression ringEnvironment pollution processing technology field.
Background technology
The present invention utilizes the volatility in zeolite molecular sieve adsorption process for producing tail gas and workshop organicA kind of method of compound.
VOC, VolatileOrganicCompounds, is abbreviated as VOCs, is with volatility, the organic compound existing with gaseous state in atmosphere. Because vapour pressure is high, be not only easily evaporated in the middle of atmosphere, andThe impact that is subject to sunshine while coexisting with nitrogen oxide can produce foul smell or photochemical oxidation thing, thus be also referred to as bring out micro-The general name of thin dust and photochemistry haze material.
The source of VOCs is very wide, the industry relating to be also very extensively. Mainly comprise the combustion of fuel, coal, natural gas etc.Burn, coating, organic solvent, cosmetics, paint, indoor wallpaper, aging electrical equipment etc. are produced tail gas. And communications and transportation, electronics electricityDevice industry, textile industry, toy industry, tobacco business, automobile industry, decoration etc. also have the product of a large amount of VOCs in production tail gasRaw.
VOCs comprises acetaldehyde, acetylene, to number of chemical materials such as benzene dichloroethylene, comprising to harm maximum,The most significant material is as harmful chemicals such as acetaldehyde, benzene, trichloro-ethylene, carbon tetrachloride, trichloroethanes, tetrachloro-ethylenes.
VOCs can cause many environmental problems, such as destruction, the stink etc. of VOC, ozone layer. RightThe impact of human body is even more serious, can cause headache, acute respiratory disease, and asthma etc., and can cause when time exposureNervous centralis is abnormal, also can be to liver, and the damage of the internal organs such as kidney and bring out cancer. In addition, VOCs is the weight that forms haze weatherWant reason, this amount of pollutants exceedes sulfur dioxide and nitrogen oxide, is the prerequisite that forms PM2.5 and ozone, to environment and peopleBody health hazard is very big.
At present, mainly comprise adsorption, absorption process, concentration method, combustion for the VOCs processing method comprising in hazeBurning method, BioFilter method and separation embrane method. Wherein, absorption process can produce a large amount of waste water, concentration method, combustion method,BioFilter method and diffusion barrier rule are harsher compared to adsorption for the restrictive condition of VOCs.
The present invention is a kind of method that zeolite molecular sieve Adsorption Concentration is processed VOC. Utilize zeolite moleculesSieve is realized the absorption of producing VOC in tail gas and workshop, and purification efficiency is high. Adopt hot-air to absorptionVOCs in a certain amount of zeolite molecular sieve carries out concentration separation, realizes the recovery of VOCs. The zeolite molecular sieve warp adoptingCondensation activation activity recovery, recycling contains VOCs gas cleaning, reaches the VOCs containing in efficient processing airGas, realizes the discharge that purifies air, reduces costs and the object of resource recovery.
Summary of the invention
The present invention is a kind of method that zeolite molecular sieve Adsorption Concentration is processed VOC, adopts zeolite moleculesSieve is as adsorbent, and the air that contains VOCs in tail gas and workshop is produced in absorption, discharges clean after zeolite molecular sieve absorptionAir after change. Be adsorbed onto the VOCs on zeolite molecular sieve by hot-air concentrating and separating again. Zeolite molecular sieve through supercooling againLife again activation cycle is used.
The present invention is a kind of method that zeolite molecular sieve Adsorption Concentration is processed VOC. As shown in Figure 1, originallyThe zeolite molecular sieve adopting in invention is mainly by aluminosilicate AlO4And SiO (a)4(b) crystallization forms, as adsorbent. AsShown in Fig. 2, first gas (2) Contact-sorption with containing VOCs of mesolite molecular sieve of the present invention (1), makes VOCs in zeolite moleculesCondense in a large number on sieve (1) surface, and the air having purified (3) is discharged. Employing temperature is the hot-air (4) of 180 ~ 210 DEG CAfter, will concentrate concentrated VOCs(5 at the VOCs of the upper absorption of zeolite molecular sieve (1)) will separate and receive from zeolite molecular sieve (1)Collection. Finally zeolite molecular sieve (1) cooling 23 DEG C arrive after, zeolite molecular sieve (1) can be activated again, recycle.
Brief description of the drawings
Fig. 1 forms the aluminosilicate AlO of zeolite molecular sieve4And SiO (a)4(b) crystalline texture schematic diagram.
Fig. 2 zeolite molecular sieve absorbs the conversion schematic diagram in concentrated VOCs process.
Fig. 3 zeolite molecular sieve absorbs the workflow schematic diagram of concentrated VOCs.
Detailed description of the invention
Specific implementation process: as shown in Figure 3, implementation procedure zeolite molecular sieve be divided into three phases absorption phase (1.1),Concentrating and separating stage (1.2), circular regeneration stage (1.3). First absorption phase (1.1) is that the gas (2) that contains VOCs is logicalCross zeolite molecular sieve absorption phase (1.1), after absorption VOCs, the air having purified (3) is discharged. Then adsorb VOCs'sZeolite molecular sieve with 210 DEG C of hot-airs (4) in the concentrating and separating stage (1.2) concentrated VOCs(5) discharge collect. Zeolite warpAfter repeatedly using, through circular regeneration stage (1.3), arrive can be again for heated zeolite molecular sieve cooling rear activate when separatingAbsorption VOCs, recycles again.
Claims (1)
1. the present invention is a kind of method that zeolite molecular sieve Adsorption Concentration is processed VOC, it is characterized in that: adoptUse aluminosilicate AlO4And SiO (a)4(b) zeolite molecular sieve (1) that crystallization forms, is divided into absorption phase (1.1), concentrating and separating rankSection (1.2), circular regeneration stage (1.3) three phases, first adsorb rank the gas that contains VOCs (2) by zeolite molecular sieveSection (1.1), after absorption VOCs, discharges the air having purified (3), then adsorbs the zeolite molecular sieve of VOCs with 180 ~ 210DEG C hot-air (4) in the concentrating and separating stage (1.2) concentrated VOCs(5) collect and discharge, zeolite molecular sieve is after repeatedly usingThrough circular regeneration stage (1.3), when separating heated zeolite molecular sieve cooling rear activate to adsorbing again VOCs,Again recycle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610151897.7A CN105597487A (en) | 2016-03-17 | 2016-03-17 | Method for performing adsorptive enrichment treatment on VOCs (Volatile Organic Compounds) by virtue of zeolite molecular sieve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610151897.7A CN105597487A (en) | 2016-03-17 | 2016-03-17 | Method for performing adsorptive enrichment treatment on VOCs (Volatile Organic Compounds) by virtue of zeolite molecular sieve |
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| Publication Number | Publication Date |
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| CN105597487A true CN105597487A (en) | 2016-05-25 |
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| CN201610151897.7A Pending CN105597487A (en) | 2016-03-17 | 2016-03-17 | Method for performing adsorptive enrichment treatment on VOCs (Volatile Organic Compounds) by virtue of zeolite molecular sieve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351158A (en) * | 2021-06-28 | 2021-09-07 | 上海中船临港船舶装备有限公司 | Zeolite molecular sieve adsorbing material for concentrating VOCs (volatile organic compounds), and preparation method and application thereof |
| CN115155237A (en) * | 2022-06-16 | 2022-10-11 | 广东智环盛发环保科技有限公司 | Waste gas treatment system for treating waste gas in chemical reservoir area and treatment method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169883A (en) * | 2015-08-19 | 2015-12-23 | 南京大学 | Method capable of improving adsorption capability of fixed bed and method for applying same in organic waste gas treatment |
| CN204891542U (en) * | 2015-08-26 | 2015-12-23 | 山东皓隆环境科技有限公司 | VOCs honeycomb runner adsorbs enrichment facility |
-
2016
- 2016-03-17 CN CN201610151897.7A patent/CN105597487A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169883A (en) * | 2015-08-19 | 2015-12-23 | 南京大学 | Method capable of improving adsorption capability of fixed bed and method for applying same in organic waste gas treatment |
| CN204891542U (en) * | 2015-08-26 | 2015-12-23 | 山东皓隆环境科技有限公司 | VOCs honeycomb runner adsorbs enrichment facility |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351158A (en) * | 2021-06-28 | 2021-09-07 | 上海中船临港船舶装备有限公司 | Zeolite molecular sieve adsorbing material for concentrating VOCs (volatile organic compounds), and preparation method and application thereof |
| CN115155237A (en) * | 2022-06-16 | 2022-10-11 | 广东智环盛发环保科技有限公司 | Waste gas treatment system for treating waste gas in chemical reservoir area and treatment method thereof |
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Application publication date: 20160525 |