CN102784557A - Method and device for treating pharmaceutical and chemical waste gases - Google Patents
Method and device for treating pharmaceutical and chemical waste gases Download PDFInfo
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- CN102784557A CN102784557A CN2011101294738A CN201110129473A CN102784557A CN 102784557 A CN102784557 A CN 102784557A CN 2011101294738 A CN2011101294738 A CN 2011101294738A CN 201110129473 A CN201110129473 A CN 201110129473A CN 102784557 A CN102784557 A CN 102784557A
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Abstract
The invention relates to a waste gas treating technology, and concretely relates to a technology for treating waste gases generated in the production process of a pharmaceutical and chemical enterprise, especially a technology for simultaneously treating chlorohydrocarbon composite organic waste gases and dioxin. The technology mainly solves a problem that the chlorohydrocarbon composite organic waste gases and the dioxin cannot be simultaneously treated when the waste gases are treated in present pharmaceutical and chemical industries, and enables the dioxin to be decomposed through the steps of waste gas mixing, preheating, catalytic decomposition, washing with water and the like, wherein the chlorohydrocarbon composite organic waste gases and the dioxin are simultaneously treated through the arrangement of a combined catalyst. The waste gases treated through the technology can reach discharge standards, so the environment is protected.
Description
Technical field
The present invention relates to a kind of exhaust gas treatment technology, specifically, relate to the exhaust gas treatment technology that a kind of medication chemistry enterprise produces in process of production, improvement technology when being compound organic exhaust gas of a kind of chlorohydrocarbon and dioxin.
Background technology
Dioxin is the material of poison in the world today known of people, and its toxicity is 130 times of cyanide, 900 times of arsenic, and the title of " poison in century " is arranged.IARC classifies it as human one-level carcinogenic substance.Because the toxicity and the harm of dioxin, to it improvement and prevent to produce, countries in the world are all very paid attention to, and have formulated very strict emission control standards.
The main generation source of dioxin is a consumer waste incineration, and the quantity of generation is more, and other also have generation like industries such as chemical industry, metallurgy, but negligible amounts.Because the dioxin that waste incineration produces is more, therefore administering dioxin all is directed against waste incineration.Used method majority is that high temperature (850～1200 ℃) decomposes, and when flue gas cool-down, cools off fast 500～150 ℃ of sections then, and to prevent dioxin at this cooling section regeneration, 150 ℃ also will spray into charcoal absorption later on and purify.This method, China also adopts in the garbage incinerating system of introducing, and improvement can be effective.Also the someone studies the catalytic decomposition method in addition, but with practical application distance is arranged still.As for other industry, for example have been found that in the medication chemistry industry waste gas to have dioxin, do not see that also the someone administers research.
Because the used raw material of most medication chemistry enterprises all has chloride and organic matter; Contain hydro carbons organic compounds such as chlorine-containing organic compounds such as chloroform, carrene, dichloroethanes and benzene, toluene, methyl alcohol, acetone in the exhaust gas discharged; Such waste gas is called the compound organic exhaust gas of chlorohydrocarbon; Be the distinctive waste gas of doctorization industry, difficulty of governance is very big.Because chlorine is in the same place with organic matter, can produce dioxin during heating simultaneously, the quantity of generation is relevant with temperature with chlorine and organic content.But, up to the present also have no talent to the compound organic exhaust gas of the distinctive chlorohydrocarbon of doctorization industry have concurrently the severe toxicity dioxin administer in the lump.
Summary of the invention
The present invention has mainly solved: at present in the doctorization industry when processing waste gas, compound organic exhaust gas of chlorohydrocarbon and dioxin can not simultaneously treated problems, and a kind of processing method and the equipment that can handle compound organic exhaust gas of chlorohydrocarbon and dioxin simultaneously is provided.
Technical solution of the present invention:
A kind of medication chemistry treatment of waste gas method is made up of following steps:
1, waste gas is induced one to mix in the casing, be mixed to waste gas and be evenly distributed;
2, mixed uniformly waste gas is carried out preheating from mixing to be incorporated in the casing in the preheating casing, preheat temperature is 400 ℃～450 ℃, makes EGT reach 400 ℃～450 ℃;
3, waste gas is incorporated in the catalysis casing in the preheating casing; Be provided with anti-chlorine type catalyst and molecular sieve rare-earth type catalyst in the catalysis casing; Two kinds of catalyst combination together, compound organic exhaust gas of chlorohydrocarbon and dioxin are decomposed simultaneously, the catalytic reaction temperature is 400 ℃～450 ℃;
4, at last waste gas is introduced from the bottom of casing that water is housed, washed, absorb the hydrogen chloride that catalytic decomposition produces, then discharging.
As preferably, for detecting the effect of handling, respectively to mixing the gas detecting in casing, preheating casing and the catalysis casing, in order to the content of dioxin and chlorinatedorganic before and after the monitoring catalytic reaction.
As preferably, the catalysis casing is arranged in the preheating casing.
For realizing said method; The technical scheme that adopts is: a kind of medication chemistry treatment of waste gas equipment; Comprise blower fan, a plurality of pipeline, mix casing, preheating casing, catalysis casing, the water tank of water is housed; Pipeline is connected blower fan, mixing casing, preheating casing, catalysis casing successively with water tank, be provided with catalyst in the described catalysis casing; Also include the waste gas casing, the waste gas casing is connected with the mixing casing with blower fan respectively through pipeline.
Air along pipeline flow through successively blower fan, mix casing, preheating casing, catalysis casing and water tank.Blower fan also is blown into the mixing casing with waste gas simultaneously; Waste gas mixes in mixing casing with air, gets into the preheating casing then together, gets into the catalysis casing again; Waste gas resolves into carbon dioxide, water and hydrogen chloride in the catalysis casing, mixture discharges after pipeline feeds water tank at last.
As preferably, between blower fan and mixing casing, be provided with pipeline valve and flowmeter successively, pipeline is connected blower fan, pipeline valve, flowmeter and mixing casing successively.Between blower fan and waste gas casing, be provided with pipeline valve and flowmeter, pipeline is connected blower fan, pipeline valve, flowmeter and waste gas casing successively.
Regulate the flow of waste gas and the flow of air through pipeline valve and flowmeter, make waste gas to carry out step 1 smoothly to 4, reach the optimum efficiency of exhaust-gas treatment.
As preferably, the catalysis casing is arranged in the preheating casing, and is positioned at the end that waste gas flows out.
Two casings are integrated, and practice thrift facility space, reduce cost, and can guarantee the temperature requirements of the catalysed partial of casing like this.
As preferably, catalyst is the combination of anti-chlorine type catalyst and molecular sieve rare-earth type catalyst.
As preferably,, in mixing casing, preheating casing and catalysis casing, be provided with sensor respectively for detecting the effect of handling.Sensor comprises temperature sensor, in order to monitor its temperature inside.Further, sensor can also comprise gas detector, in order to detect the content of dioxin and chlorinatedorganic composition.
The beneficial effect that the present invention obtains: effectively administer compound organic exhaust gas of chlorohydrocarbon and dioxin, but qualified discharge after the improvement, the protection environment.
Description of drawings
Fig. 1 is an apparatus structure sketch map of the present invention;
Fig. 2 is the flow chart of exhaust-gas treatment of the present invention;
Among the figure: 1, blower fan, 2, pipeline, 3, pipeline valve, 4, the catalysis casing, 5, the preheating casing, 6, flowmeter, 7, the waste gas casing, 8, water tank, 9, mix casing.
The specific embodiment
And combine the accompanying drawing and the specific embodiment that the present invention is further described.
Embodiment 1: a kind of medication chemistry treatment of waste gas equipment (referring to accompanying drawing 1); Comprise blower fan 1, a plurality of pipeline 2, mix casing 9, preheating casing 5, catalysis casing 4, the water tank 8 of water is housed; Pipeline 2 is connected blower fan 1, mixing casing 9, preheating casing 5, catalysis casing 4 successively with water tank 8; Be provided with catalyst in the described catalysis casing 4; Between blower fan 1 and mixing casing 9, also be provided with pipeline valve 3, flowmeter 6 and waste gas casing 7; Blower fan 1 is connected through two paths with mixing casing 9, and one is that pipeline 2 is connected blower fan 1, pipeline valve 3, flowmeter 6 and mixing casing 9 successively, and another is that pipeline 2 is connected blower fan 1, pipeline valve 3, flowmeter 6, waste gas casing 7 and mixing casing 9 successively; Wherein catalysis casing 4 is arranged at the end that the waste gas in the preheating casing 5 flows out.For detecting the effect of handling, in mixing casing 9, preheating casing 5 and catalysis casing 4, be provided with sensor (not drawing among the figure) respectively, sensor is a temperature sensor, in order to the detector temperature inside; On mixing casing 9, preheating casing 5 and catalysis casing 4, be provided with sample tap (not drawing among the figure) simultaneously; In order to its inner dioxin of sampling monitoring and chlorinatedorganic composition, wherein sampling test point I is arranged in the mixing casing 9, sampling test point II is arranged in the preheating casing 5, sampling test point III is arranged in the catalysis casing 4.
Wherein waste gas casing 7 is for being equipped with the casing of medication chemistry waste gas.
Adopt the said equipment, simulation medication chemistry enterprise exhaust gas discharged state carries out exhaust-gas treatment below, and the exhaust-gas treatment flow process is referring to accompanying drawing 2.In simulation process, chlorinated organics and benzene, ketone organic matter are housed in the waste gas casing 7; In following examples, its component content is: chlorinated organics: benzene, ketone organic matter are 1: 2 (volume ratio); Wherein chlorinated organics is chloroform, carrene and dichloroethanes; Benzene, ketone organic matter are toluene, ethanol and acetone; Chloroform wherein: carrene: dichloroethanes is 1: 1: 1 (volume ratio), toluene: ethanol: acetone is 1: 1: 1 (volume ratio).
Embodiment 2: the flow through control gas makes that the chlorinatedorganic total concentration of mixing in the casing is 4300mg/m
3, wherein each composition proportion is: chloroform 16%, carrene 7%, dichloroethanes 7%, toluene 28%, ethanol 14%, acetone 28%.The waste gas that produces is introduced mixing casing 9 through blower fan 1 and is mixed, and keeping the organic matter total concentration is 4300mg/m
3, and then pass through preheating casing 5 one ends and carry out preheating, preheat temperature is 410 ℃; Then get into the catalysis casing 4 of the other end; Only be provided with anti-chlorine type catalyst in the catalysis casing 4, waste gas enters water tank 8 washing back dischargings at last after the catalysed partial of casing stops 0.1～0.2s.Detect respectively at measuring point I and measuring point III, the resolution ratio that calculates chlorinatedorganic is more than 95%, detects at measuring point III, and the content of measuring dioxin is 0.6ngTEQ/m
3, be lower than the discharge standard 1ngTEQ/m of China
3
Embodiment 3: through the feasible chlorinatedorganic total concentration 4300mg/m that mixes in the casing of the flow of control gas
3, wherein each composition proportion is: chloroform 16%, carrene 7%, dichloroethanes 7%, toluene 28%, ethanol 14%, acetone 28%.The waste gas that produces is introduced mixing casing 9 through blower fan 1 and is mixed, and keeping the organic matter total concentration is 4500mg/m
3, and then carry out preheating through preheating casing 5 one ends, preheat temperature is 430 ℃, then gets into the catalysis casing 4 of the other end, only is provided with anti-chlorine type catalyst in the catalysis casing 4, stop 0.1～0.2s after, enter water tank 8 washing back dischargings.Detect respectively at measuring point I and measuring point III, the resolution ratio that calculates chlorinatedorganic is more than 95%; Detect at measuring point II, the content of measuring dioxin is 1.98ngTEQ/m
3, detecting at measuring point III, the content of measuring dioxin is 0.8ngTEQ/m
3, the catalytic decomposition rate of dioxin is 59.6%.The content of dioxin is lower than China's discharge standard after the catalytic decomposition.
Embodiment 4: through the feasible chlorinatedorganic total concentration 4300mg/m that mixes in the casing of the flow of control gas
3, wherein each composition proportion is: chloroform 16%, carrene 7%, dichloroethanes 7%, toluene 28%, ethanol 14%, acetone 28%.The waste gas that produces is introduced mixing casing 9 through blower fan 1 and is mixed, and keeping the organic matter total concentration is 4600mg/m
3And then process preheating casing 5 one ends carry out preheating; Preheat temperature is 450 ℃, then gets into the catalysis casing 4 of the other end, is provided with catalyst in the catalysis casing 4; Wherein catalyst is the combination catalyst of anti-chlorine type catalyst and molecular sieve rare-earth type catalyst, and waste gas enters water tank 8 washing back dischargings after catalysed partial stops 0.1～0.2s.Detect respectively at measuring point I and measuring point III, the resolution ratio that calculates chlorinatedorganic is more than 95%; Detect at measuring point I, the content of measuring dioxin is 0.2ngTEQ/m
3, detecting at measuring point II, the content of measuring dioxin is 20.8ngTEQ/m
3, detecting at measuring point III, the content of measuring dioxin is 0.4ngTEQ/m
3, the catalytic decomposition rate of dioxin is 85.7%.The content of dioxin is lower than China's discharge standard after the catalytic decomposition.
Can see that from above embodiment waste gas is through apparatus of the present invention the time; Under the combination catalyst state that anti-chlorine type catalyst and molecular sieve rare-earth type catalyst are arranged; Waste gas carries out catalytic decomposition, can effectively compound organic exhaust gas of chlorohydrocarbon and dioxin be decomposed simultaneously, and the compound organic exhaust gas resolution ratio of chlorohydrocarbon is more than 95%; Dioxin decomposes resolution ratio 85.7%, reaches discharging standards after the decomposition.
Claims (9)
1. medication chemistry treatment of waste gas method, it is characterized in that: it is made up of following steps:
1) waste gas is induced one to mix in the casing, be mixed to waste gas and be evenly distributed;
2) mixed uniformly waste gas is carried out preheating from mixing to be incorporated in the casing in the preheating casing, preheat temperature is 400 ℃～450 ℃, makes EGT reach 400 ℃～450 ℃;
3) waste gas is incorporated in the catalysis casing in the preheating casing; Be provided with anti-chlorine type catalyst and molecular sieve rare-earth type catalyst in the catalysis casing; Two kinds of catalyst combination together, compound organic exhaust gas of chlorohydrocarbon and dioxin are decomposed simultaneously, the catalytic reaction temperature is 400 ℃～450 ℃;
4) at last waste gas is introduced from the bottom of casing that water is housed, washed, absorb the hydrogen chloride that catalytic decomposition produces, then discharging.
2. a kind of medication chemistry treatment of waste gas method according to claim 1; It is characterized in that: for detecting the effect of handling; Respectively to mixing the gas detecting in casing, preheating casing and the catalysis casing, in order to the content of dioxin and chlorinatedorganic before and after the monitoring catalytic reaction.
3. a kind of medication chemistry treatment of waste gas method according to claim 1 and 2, it is characterized in that: the catalysis casing is arranged in the preheating casing.
4. medication chemistry treatment of waste gas equipment; It is characterized in that: comprise blower fan, a plurality of pipeline, mix casing, preheating casing, catalysis casing, the water tank of water is housed; Pipeline is connected blower fan, mixing casing, preheating casing, catalysis casing successively with water tank, be provided with catalyst in the described catalysis casing; Also include the waste gas casing, the waste gas casing is connected with the mixing casing with blower fan respectively through pipeline.
5. a kind of medication chemistry treatment of waste gas equipment according to claim 4 is characterized in that: between blower fan and mixing casing, be provided with pipeline valve and flowmeter successively, pipeline is connected blower fan, pipeline valve, flowmeter and mixing casing successively.
6. according to claim 4 or 5 described a kind of medication chemistry treatment of waste gas equipment, it is characterized in that: between blower fan and waste gas casing, be provided with pipeline valve and flowmeter, pipeline is connected blower fan, pipeline valve, flowmeter and waste gas casing successively.
7. a kind of medication chemistry treatment of waste gas equipment according to claim 6, it is characterized in that: the catalysis casing is arranged in the preheating casing, and is positioned at the end that waste gas flows out.
8. a kind of medication chemistry treatment of waste gas equipment according to claim 7 is characterized in that: catalyst is the combination in anti-chlorine type catalyst and the molecular sieve rare-earth type catalyst.
9. a kind of medication chemistry treatment of waste gas equipment according to claim 8 is characterized in that: in mixing casing, preheating casing and catalysis casing, be provided with sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101294738A CN102784557A (en) | 2011-05-18 | 2011-05-18 | Method and device for treating pharmaceutical and chemical waste gases |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101294738A CN102784557A (en) | 2011-05-18 | 2011-05-18 | Method and device for treating pharmaceutical and chemical waste gases |
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| CN102784557A true CN102784557A (en) | 2012-11-21 |
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| CN2011101294738A Pending CN102784557A (en) | 2011-05-18 | 2011-05-18 | Method and device for treating pharmaceutical and chemical waste gases |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289098A (en) * | 2013-07-19 | 2015-01-21 | 北京市劳动保护科学研究所 | Purification and deodorizing device |
| CN110038407A (en) * | 2019-04-16 | 2019-07-23 | 南京工业大学 | Purification treatment method and system for waste gas containing hydrogen chloride gas and organic chlorine compound gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280030A (en) * | 1999-07-09 | 2001-01-17 | 户田工业株式会社 | Treating method for waste gas containing dipyryl |
| CN101347723A (en) * | 2008-09-04 | 2009-01-21 | 华东理工大学 | Catalyst for eliminating chlorinated aromatic hydrocarbons by low-temperature catalytic combustion |
| CN101444746A (en) * | 2009-01-06 | 2009-06-03 | 浙江大学 | A preparation method of CeO*-mol sieve catalyst |
| CN101766951A (en) * | 2008-12-31 | 2010-07-07 | 北京中科通用能源环保有限责任公司 | System and method for restraining generation of dioxins in the process of reducing temperature of exhaust gas caused by incinerating garbage |
-
2011
- 2011-05-18 CN CN2011101294738A patent/CN102784557A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280030A (en) * | 1999-07-09 | 2001-01-17 | 户田工业株式会社 | Treating method for waste gas containing dipyryl |
| CN101347723A (en) * | 2008-09-04 | 2009-01-21 | 华东理工大学 | Catalyst for eliminating chlorinated aromatic hydrocarbons by low-temperature catalytic combustion |
| CN101766951A (en) * | 2008-12-31 | 2010-07-07 | 北京中科通用能源环保有限责任公司 | System and method for restraining generation of dioxins in the process of reducing temperature of exhaust gas caused by incinerating garbage |
| CN101444746A (en) * | 2009-01-06 | 2009-06-03 | 浙江大学 | A preparation method of CeO*-mol sieve catalyst |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289098A (en) * | 2013-07-19 | 2015-01-21 | 北京市劳动保护科学研究所 | Purification and deodorizing device |
| CN104289098B (en) * | 2013-07-19 | 2016-06-22 | 北京市劳动保护科学研究所 | Purification smell removal device |
| CN110038407A (en) * | 2019-04-16 | 2019-07-23 | 南京工业大学 | Purification treatment method and system for waste gas containing hydrogen chloride gas and organic chlorine compound gas |
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Application publication date: 20121121 |