CN103252155B - Device for treating organic waste gas with oil-in-water emulsion and method for treating organic waste gas - Google Patents
Device for treating organic waste gas with oil-in-water emulsion and method for treating organic waste gas Download PDFInfo
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- CN103252155B CN103252155B CN201310191344.0A CN201310191344A CN103252155B CN 103252155 B CN103252155 B CN 103252155B CN 201310191344 A CN201310191344 A CN 201310191344A CN 103252155 B CN103252155 B CN 103252155B
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Abstract
The invention aims to provide a device for treating organic waste gas with an oil-in-water emulsion and a method for treating organic waste gas. The device for treating organic waste gas with an oil-in-water emulsion comprises a packed absorption tower, an oil-in-water emulsion circulating spray device and an oil-water separator which are sequentially connected. The device for treating organic waste gas with an oil-in-water emulsion is simple in structure and convenient to use; the oil phase in the organic waste gas can be absorbed and removed by the oil-in-water emulsion, and the removal efficiency is up to 90-99%; the removal efficiency of dust and particulate matters is up to 98% or above, thus greatly reducing the discharge of dust pollution; a skimmer ensures the treatment efficiency and causes no secondary pollution; and the oil phase and the emulsion are separated by the oil-water separator, and the separated emulsion can absorb the oil phase of the organic waste gas in a circulating manner, thereby improving the circular economy, greatly reducing the consumption of resources such as water and the like, and lowering the operating cost.
Description
Technical field
The present invention relates to a kind of oil-in-water system emulsion administer the device of organic exhaust gas and administer the method for organic exhaust gas, belong to waste gas purification technical field.
Background technology
Atmosphere pollution is one of problem of environmental pollution of giving prominence at present of China, industrial waste gas is the main source of atmosphere pollution, have serious harm to agricultural, social environment, natural environment and health of people, " 12 " planning will set up nationwide atmosphere environment supervision.Organic exhaust gas is one of most refractory process gases in industrial waste gas, various organic compounds can be produced in industrial production, mainly comprise various hydro carbons, alcohols, aldehydes, acids, ketone and amine etc., organic exhaust gas can enter human body by respiratory tract and skin, cause temporary and permanent pathology can to the organs and systems such as breathing, blood, liver of people, be detrimental to health.Conventional administering method is adopted usually to organic wastewater soluble in water, as absorption, condensation, absorption etc.; And to being insoluble in the organic wastewater of water, current Processing tecchnics is complicated, cost of investment is high, and governance efficiency is not ideal.
Absorption method is a kind of conventional improvement containing the method for volatile organic matter, and wherein active carbon adsorption is most widely used, but it there is non-refractory, good adsorption capacity can not be kept under humidified condition, inflammable, cost is high and the shortcoming of secondary pollution etc.
Absorption process is a kind of chemical separating operation developing comparatively morning, technical maturity, applied range, and can recycle pollutant at elimination gaseous contaminant, be one of conventional air Treatment process simultaneously.The height of absorption process absorption efficiency depends primarily on absorbent.
Summary of the invention
The object of this invention is to provide a kind of oil-in-water system emulsion administer the device of organic exhaust gas and administer the method for organic exhaust gas.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A device for organic exhaust gas administered by oil-in-water system emulsion, comprises packed absorber, oil-in-water system emulsion circulating sprayer and oil water separator that order connects.
Applicant finds after deliberation: packed absorber and oil-in-water system emulsion circulating sprayer utilize oil-in-water system emulsion efficiently can remove oil phase in organic exhaust gas and dust granules thing, and isolate liquid phase and oil phase by oil water separator, thus the oil-in-water system emulsion recycled in liquid phase and recovery oil phase, greatly reduce the resource consumptions such as water body; Emulsion is as a kind of absorbent, surface has hydrophilic group and lipophilic group, immiscible two-phase (as oil and water) can be made mutually miscible, and form homogeneous dispersion or emulsified body, thus change original physical state, and absorb the emulsion of oil phase in organic exhaust gas, according to the similar principle that mixes, significantly can improve the absorption efficiency of oil phase in organic exhaust gas, remove the oil phase in organic exhaust gas substantially.
Above-mentioned emulsion spray device comprises emulsion box, fluid level controller.
In order to improve the detergence(-cy) of device, above-mentionedly also comprise the gas skirt and gas gathering manifold that are cascaded, gas gathering manifold is connected with packed absorber.
In order to ensure the regulation effect of emulsion, also comprise the demister be connected with oil-in-water system emulsion circulating sprayer.
Above-mentioned demister is mainly used in the foam suppressing emulsion absorption organic exhaust gas to produce, ensure the removal efficiency of oil-in-water system emulsion, its principle utilizes breaking-froth breaking effect, the emulsifying agent adding adverse effect in breakdown of emulsion and defoaming process is needed at some, to destroy the balance of emulsion, thus suppress the generation of foam.
In order to improve the detergence(-cy) of device further, also comprise the absorbent charcoal adsorber be connected with demister.
Gas purging after conveniently administering, also comprises the air-introduced machine be connected with absorbent charcoal adsorber.
Above-mentioned absorbent charcoal adsorber also can not be established, and when not establishing, air-introduced machine is connected with demister.
The method of the device improvement organic exhaust gas of organic exhaust gas administered by above-mentioned oil-in-water system emulsion, comprises the following steps that order connects:
A, organic exhaust gas are successively through packed absorber and oil-in-water system emulsion circulating sprayer;
The liquid of B, spray equipment gained is separated to obtain liquid phase and oil phase through oil water separator;
In C, step B, the liquid phase of gained enters spray equipment and recycles;
D, the oil phase of gained in step B reclaimed and purifies, be directly used as solvent naphtha or be used as fuel.
In oil-in-water system emulsion circulating sprayer emulsion used can be cationic, anionic with and nonionic.
In order to improve the efficiency of improvement, the oil-in-water emulsion of emulsion used to be mass concentration be 1-10% in oil-in-water system emulsion circulating sprayer.
Above-mentioned emulsion refers to the solution of emulsifying agent.
Applicant finds after deliberation: adopt above-mentioned emulsion, can make the oil phase of hydrophobicity organic exhaust gas solubilising more than 65% in water, effectively can remove the oil phase being insoluble in water (solubility in water is less than 5%) in organic exhaust gas.
In order to improve the stability of emulsion, improve the efficiency of improvement, described oil-in-water system emulsion emulsifying agent used is NPE, and in the raw material of NPE, the mass ratio of nonyl phenol and oxirane is 1:(1-4 simultaneously).
In order to improve the efficiency of improvement, the temperature that emulsion absorbs organic exhaust gas is 15 ~ 50 DEG C, and gas liquid ratio is 1000 ~ 10000Nm
3/ m
3.Applicant finds after deliberation, and with this understanding, regulation effect reaches best, and removal efficiency reaches more than 96%.
The not specified technology of the present invention is prior art.
The apparatus structure that organic exhaust gas administered by oil-in-water system of the present invention emulsion is simple, easy to use, oil-in-water system emulsion is utilized to absorb the oil phase removed in organic exhaust gas, removal efficiency reaches the physicochemical property of high 90%-99%(according to organic exhaust gas), more than 98% is reached to the removal efficiency of dust granules thing simultaneously, significantly reduce dust pollution discharge; Demister is utilized to ensure its treatment effeciency, non-secondary pollution; Adopt oil water separator to be separated with emulsion by oil phase, the emulsion cyclic absorption organic exhaust gas after separation oil phase, improve recycling economy, greatly reduce the resource consumption such as water body, reduce operating cost.
Accompanying drawing explanation
Fig. 1 is the process chart that embodiment 1 administers organic exhaust gas.
In figure, arrow refers to the flow direction of gas.
Detailed description of the invention
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1
The device of organic exhaust gas administered by oil-in-water system emulsion, comprises gas skirt, gas gathering manifold, packed absorber, oil-in-water system emulsion circulating sprayer and oil water separator that order connects; Also comprise the demister, absorbent charcoal adsorber and the air-introduced machine that are connected with oil-in-water system emulsion circulating sprayer order.
As shown in Figure 1, the key step of administering the device improvement organic exhaust gas of organic exhaust gas with oil-in-water system emulsion is: organic exhaust gas enters packed absorber, oil-in-water system emulsion circulating sprayer successively after collecting, adopt oil-in-water system emulsion to carry out emulsification in the mode of spray-absorption to the oil phase in organic exhaust gas, absorb and remove, absorb the emulsion of oil phase according to the similar principle that mixes, can to the absorption of oil phase in organic exhaust gas, efficiency can significantly improve, and removes dust granules thing simultaneously; Emulsion after spray flows into ditch, catch pit is flowed into through screen pack, be enriched the emulsion of organic exhaust gas composition, after leaving standstill by oil water separator by separation of oil out, aqueous phase flows into another ditch and enters oil-in-water system emulsion circulating sprayer and recycle, greatly saving water resource.Oil-in-water system emulsion absorbs when removing oil phase in organic exhaust gas can produce a small amount of foam, demister now can be utilized to suppress the generation of a small amount of foam, ensure the removal efficiency of oil-in-water system emulsion, its principle mainly adopts breaking-froth breaking effect, in the process that some needs breakdown of emulsion and froth breaking, add the emulsifying agent of adverse effect, to destroy the balance of emulsion, thus suppress the generation of foam.The operating temperature of above-mentioned oil-in-water system emulsion circulating sprayer is 25 DEG C.
Emulsion in oil-in-water system emulsion circulating sprayer to be mass concentration be 4% NPE (in the raw material of NPE nonyl phenol and oxirane mass ratio 1:2);
By in said apparatus, pass into concentration 1000mg/m
3dimethylbenzene gas, controls gas liquid ratio (Nm
3/ m
3) be 3000, continue 3h;
Dimethylbenzene discharge capacity after said apparatus process is about 40mg/m
3(utilizing thermal desorption sample introduction gas chromatograph (national examination criteria) to detect in real time), meet " discharge standard of air pollutants " (GB16297-1996), the clearance of dimethylbenzene is 96%.
Embodiment 2
Substantially the same manner as Example 1, difference is: emulsion to be mass concentration be 8% NPE (in the raw material of NPE nonyl phenol and oxirane mass ratio 1:4); Pass into concentration 2000mg/m
3phenol gas, controls gas liquid ratio (Nm
3/ m
3) be 8000, continue 3h;
Phenol discharge capacity after said apparatus process is about 30mg/m
3(adopting 4-AA AAS (national examination criteria) to detect), meet " discharge standard of air pollutants " (GB16297-1996), the clearance of phenol is 98.5%.
Claims (7)
1. the device adopting oil-in-water system emulsion to administer organic exhaust gas administers a method for organic exhaust gas, it is characterized in that:
The device of organic exhaust gas administered by oil-in-water system emulsion, comprises packed absorber, oil-in-water system emulsion circulating sprayer and oil water separator that order connects;
Comprise the following steps that order connects:
A, organic exhaust gas are successively through packed absorber and oil-in-water system emulsion circulating sprayer;
The liquid of B, spray equipment gained is separated to obtain liquid phase and oil phase through oil water separator;
In C, step B, the liquid phase of gained enters spray equipment and recycles;
D, the oil phase of gained in step B reclaimed and purifies, be directly used as solvent naphtha or be used as fuel;
The oil-in-water system emulsion of emulsion used to be mass concentration be 1-10% in oil-in-water system emulsion circulating sprayer;
Described oil-in-water system emulsion emulsifying agent used is NPE, and in the raw material of NPE, the mass ratio of nonyl phenol and oxirane is 1:(1-4).
2. the method for claim 1, is characterized in that: the temperature that oil-in-water system emulsion absorbs organic exhaust gas is 15 ~ 50 DEG C, and gas liquid ratio is 1000 ~ 10000Nm
3/ m
3.
3. method as claimed in claim 1 or 2, is characterized in that: the device that organic exhaust gas administered by oil-in-water system emulsion also comprises the gas skirt and gas gathering manifold that are cascaded, and gas gathering manifold is connected with packed absorber.
4. method as claimed in claim 1 or 2, is characterized in that: the device that organic exhaust gas administered by oil-in-water system emulsion also comprises the demister be connected with oil-in-water system emulsion circulating sprayer.
5. method as claimed in claim 4, is characterized in that: also comprise the absorbent charcoal adsorber be connected with demister.
6. method as claimed in claim 5, is characterized in that: also comprise the air-introduced machine be connected with absorbent charcoal adsorber.
7. method as claimed in claim 4, is characterized in that: also comprise the air-introduced machine be connected with demister.
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| CN201310191344.0A CN103252155B (en) | 2013-05-21 | 2013-05-21 | Device for treating organic waste gas with oil-in-water emulsion and method for treating organic waste gas |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537171B (en) * | 2013-10-30 | 2016-04-06 | 许征 | A kind of method of emulsion, the device administering organic exhaust gas and the improvement organic exhaust gas for administering organic exhaust gas |
| CN104295902A (en) * | 2014-09-29 | 2015-01-21 | 新疆敦华石油技术有限公司 | Environmentally-friendly recycling device for exhaust steam of gathering tank |
| CN105642076A (en) * | 2016-02-23 | 2016-06-08 | 北京沃太斯环保科技发展有限公司 | Absorbent for removing non-methane hydrocarbons and preparation method of absorbent |
| CN107485993A (en) * | 2016-12-15 | 2017-12-19 | 宁波世科光电有限公司 | Harbour oil gas recovery processing system |
| CN108096997B (en) * | 2017-11-24 | 2020-09-01 | 浙江大学 | Absorption liquid for wet dust removal process in high-temperature plasma coal cracking acetylene preparation process and application |
| CN113694694B (en) * | 2021-09-18 | 2022-10-11 | 中国石油化工股份有限公司 | Method and system for treating gas containing organic matter |
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