CN103768925B - The treating apparatus of a kind of sulfur-bearing, nitrogen waste gas - Google Patents
The treating apparatus of a kind of sulfur-bearing, nitrogen waste gas Download PDFInfo
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- CN103768925B CN103768925B CN201410066460.4A CN201410066460A CN103768925B CN 103768925 B CN103768925 B CN 103768925B CN 201410066460 A CN201410066460 A CN 201410066460A CN 103768925 B CN103768925 B CN 103768925B
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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
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Abstract
The invention discloses the treating apparatus of a kind of sulfur-bearing, nitrogen waste gas, belong to biological desulphurization denitrification treatment technology field.This comprises bio-trickling filter, described bio-trickling filter is by upper conical-tube, cylindrical shell and cyclone separation device composition, described upper conical-tube is fixed on the top of described cylindrical shell, described cyclone separation device is fixed on the bottom of described cylindrical shell, sieve plate is horizontally installed with in described cylindrical shell, described cylindrical shell is divided into packing cavity and fluid-through chamber by described sieve plate, described packing cavity top is provided with spray thrower, the input of described spray thrower is connected with water circulating pump, between described spray thrower and described water circulating pump, valve is installed, described fluid-through chamber top is provided with aerator, described aerator is connected with air inlet pipe, described air inlet pipe installs static mixer, one end of described static mixer is connected with described water circulating pump, the liquid-phase outlet of described cyclone separation device is connected with water circulating pump.This device effectively can improve the treatment effect of sulfur-bearing, nitrogen waste gas.
Description
Technical field
The invention belongs to biological desulphurization denitrification treatment technology field, be specifically related to the treating apparatus of a kind of sulfur-bearing, nitrogen waste gas.
Background technology
Along with the fast development of China's economy, more than 5% is reached to the demand annual growth of oil, but because China self oil production rate growth rate only has 1.8%, can only be supplemented by imported crude oil, and employing heavy oil catalytic pyrolysis a large amount of in crude oil processing, hydrodesulfurization, the processing technologys such as heavy-oil hydrogenation is refining, make the major part of the sulphur in crude oil finally there is refinery in tail gas with hydrogen sulfide with containing the form of the organic compound of sulfydryl.These sulphur-containing substances not only can etching apparatus and pipeline, goes back healthy and safe to the mankind of entail dangers to, so effective these harmful sulphur-containing substances of process just seem particularly important.At present, the main method of improvement can be summed up as physics, chemical and biological three major types.Wherein Physical mainly contains dilution method and masking method etc.; Chemical method mainly contains chemical oxidation, chemical absorbing and combustion method etc.; Bioanalysis mainly contains soil method, compost fermentation method, activated sludge process, bio-trickling filter method and zinc cation method.Wherein, physics and chemistry method technique all more complicated, equipment is numerous and diverse, there is the problem of secondary pollution, and appearing at of bioanalysis improves these problems to a great extent, there is good purification, device structure is simple, and investment cost is low, easy and simple to handle, system maintenance is simple, and does not have the feature of secondary pollution etc.
Bio-trickling filter in bioanalysis is a kind of biological deodorizer between biofiltration and zinc cation, in bio-trickling filter system, microorganism is existing is fixedly attached on filler, also have and be suspended in circulation fluid, so have the double action of biofiltration and zinc cation concurrently.The principle of general bio-trickling filter is as follows: sulfurous gas is by entering the bio-trickling filter stacked containing microbial film filler at the bottom of tower, the liquid reverse flow sprayed downwards with tower top, in gas rising flow process, microorganism adsorption in the biomembrane on the filled surface of sulfurous gas, degraded, after purification, gas is discharged by gas outlet, circulation fluid is extracted into top-down flowing in tower via circulating pump, the biomembrane of wetting surface, finally enters circulating water chennel by tower bottom flow, recycles.
General bio-trickling filter is easily subject to the impact of the factors such as gas residence time, inlet gas concentration, gas speed and bed stuffing height, thus affects deodorising effect.When dripping filter tower physical dimension and determining, the time of staying is short, then gas speed is very fast, is conducive to reducing air film resistance thus the speed accelerating mass transfer, is conducive to a certain extent improving clean-up effect, and the quickening of gas speed can increase the pressure loss of dripping filter tower but then.And increase bed stuffing height and can improve clean-up effect, but simply in order to improve effect, to increase tower height be also uneconomic.Have data to show, when inlet gas concentration is lower time, these factors are just very little on the impact for the treatment of effect, thus by setting up other equipment before tower, carrying out two-way process, changing the structure of tower to improve treatment effect simultaneously.
Summary of the invention
The object of the invention is for solve the problem and provide a kind of improve process sulfur-bearing, nitrogen waste gas effect device.
The technical solution adopted in the present invention is:
A kind of sulfur-bearing, the treating apparatus of nitrogen waste gas, comprise bio-trickling filter, described bio-trickling filter is by upper conical-tube, cylindrical shell and cyclone separation device composition, described upper conical-tube is fixed on the top of described cylindrical shell, described cyclone separation device is fixed on the bottom of described cylindrical shell, sieve plate is horizontally installed with in described cylindrical shell, described cylindrical shell is divided into packing cavity and fluid-through chamber by described sieve plate, described packing cavity top is provided with spray thrower, the input of described spray thrower is connected with water circulating pump, between described spray thrower and described water circulating pump, valve is installed, described fluid-through chamber top is provided with aerator, described aerator is connected with air inlet pipe, described air inlet pipe installs static mixer, one end of described static mixer is connected with described water circulating pump, the liquid-phase outlet of described cyclone separation device is connected with water circulating pump.
Further, described upper conical-tube is fixed on the top of described cylindrical shell by flange.
Further, described cyclone separation device is fixed on the bottom of described cylindrical shell by flange.
Further, the top of described upper conical-tube is provided with exhaust outlet, and the bottom of described cyclone separation device is provided with outlet.
Preferably, the position of described sieve plate is at the middle part of described cylindrical shell.
Further, uniform filling haydite in described packing cavity, is placed with bioelectrode in described haydite.
Further, in described bio-trickling filter, there is circulation fluid, containing microorganism in described circulation fluid.
Preferably, described static mixer is SV type static mixer.
Further, described bio-trickling filter is provided with fixed support.
The present invention has the following advantages:
(1) in this device, water circulating pump is connected with spray thrower with air inlet pipe respectively, circulation fluid is made both to have may be used for the cultivation of microorganism, may be used for again partially absorbing reaction to air inlet, reduce the concentration of air inlet, also make air inlet carry out pre-wetted treatment, the reaction be conducive in follow-up filter tower is more complete simultaneously.(2) static mixer utilizes the flow regime of mixed cell structural reform fluid in pipe be fixed in pipe, to reach the object of abundant blended absorbent between different fluid, air inlet pipe and the pipeline between water circulating pump tie point and aerator install static mixer, air inlet and the abundant blended absorbent of circulation fluid can be made, both reduce gas concentration, and make again gas and liquid form percussion flow and object gas being reached prewet.(3) before gas enters a filter tower, reduce its concentration can reduce the factors such as the time of staying, gas speed and bed stuffing height to the impact of bio-absorbable effect.(4) device is absorbed by chemical absorbing and biological respinse and has carried out double-absorption to air inlet, and more thoroughly, more completely can carry out absorption reaction process to air inlet, treatment effect is good.(5) placing in filler can the electrode of loading microorganisms, can improve biologically active, and provide energy, improve microorganism to the treatment effect of sulfur-bearing nitrogenous gas.(6) adopt cyclone separation device to be separated, can more thoroughly Solid-Liquid Separation be opened, so that circulation fluid recycles.(7) the utility model structure is simple, and at the bottom of operating cost, less energy consumption, maintenance management is convenient.
Accompanying drawing explanation
Fig. 1 for provide in the embodiment of the present invention a kind of sulfur-bearing, nitrogen waste gas the structural representation for the treatment of apparatus;
Fig. 2 for provide in the embodiment of the present invention a kind of sulfur-bearing, nitrogen waste gas treating apparatus in the structural representation of cyclone separation device.
Detailed description of the invention
Below in conjunction with drawings and embodiments, the present invention will be further described in detail.
Present embodiments provide the treating apparatus of a kind of sulfur-bearing, nitrogen waste gas, comprise bio-trickling filter 1.Bio-trickling filter 1 internal diameter is 500mm ~ 550mm, and the internal diameter of bio-trickling filter 1 can make the degradation rate of the nitrogenous waste gas of sulfur-bearing reach 99% in above-mentioned scope.Bio-trickling filter 1 is made up of upper conical-tube 12, cylindrical shell 13 and cyclone separation device 4.Upper conical-tube 12 is fixed on the top of cylindrical shell 13, and is fixed by flange.Cyclone separation device 4 is fixed on the bottom of cylindrical shell 13, and is fixed by flange.The top of upper conical-tube 12 is provided with exhaust outlet 18, and the bottom of cyclone separation device 4 is provided with outlet 16.In cylindrical shell 13, medium position is horizontally installed with sieve plate 8, the multiple sieve aperture 17 of distributed quantity on sieve plate, and the aperture of sieve aperture 17 is 3mm ~ 5mm, and the spacing of two adjacent sieve apertures 17 is 7mm ~ 9mm.Spacing between the aperture of sieve aperture 17 and sieve aperture 17 can reach optimum filtration effect in above-mentioned scope.Cylindrical shell 13 is divided into packing cavity 14 and fluid-through chamber 15 by sieve plate 8.Packing cavity 14 top is provided with spray thrower 2, and the input of spray thrower 2 is connected with water circulating pump 5, is provided with valve 6 between spray thrower 2 and water circulating pump 5.Fluid-through chamber 15 top is provided with aerator 3.Aerator 3 is connected with air inlet pipe 10.Water circulating pump 5 is connected with spray thrower 2 with air inlet pipe 10 respectively, circulation fluid is made both to have may be used for the cultivation of microorganism, may be used for again partially absorbing reaction to air inlet, reduce the concentration of air inlet, simultaneously also make air inlet carry out pre-wetted treatment, being conducive to subsequent bio, to drip the reaction of filter tower 1 more complete.The one end of air inlet pipe 10 being installed SV static mixer 7, SV static mixer 7 is connected with water circulating pump 5.SV type unit is the cylinder assembled by the corrugated plating of certain specification, its best result degree of faling apart is 1 ~ 2mm, be applicable to the hybrid reaction of the liquid-gas of viscosity≤102 centipoise, absorption process, SV type static mixer 7 is selected to be utilize the flow regime of mixed cell structural reform fluid in pipe be fixed in pipe, to reach the object of abundant blended absorbent between different fluid, air inlet pipe 10 and the pipeline between water circulating pump 5 tie point and aerator 3 install static mixer, air inlet and the abundant blended absorbent of circulation fluid can be made, both gas concentration was reduced, gas and liquid is made again to form percussion flow and object gas being reached prewet.The liquid-phase outlet of cyclone separation device 4 is connected with water circulating pump 5.Cyclone separation device 4 more thoroughly can be opened Solid-Liquid Separation, so that circulation fluid recycles.The several haydite 9 of uniform filling in packing cavity 14, be placed with bioelectrode in haydite 9, the haydite 9 of filling in packing cavity 14 is highly about 1100mm, and packing cavity 14 also should have certain space in vain after filling haydite 9, therefore, packing cavity 14 height has optimal spatial volume in above-mentioned scope.Placing at haydite 9 can the electrode of loading microorganisms, can improve biologically active, and provide energy, improve microorganism to the treatment effect of the nitrogenous waste gas of sulfur-bearing.Circulation fluid is had, containing microorganism in circulation fluid in bio-trickling filter 1.Bio-trickling filter 1 is provided with fixed support, and support bracket fastened height is 500mm.
The operation principle of this device is: fill several haydite 9 to packing cavity 14, and packed height is about 1100mm, nitrogenous for sulfur-bearing waste gas is passed into from air inlet tube 10, first mix with the circulation fluid obtained by water circulating pump 5, partially absorb in SV static mixer 7, and prewet, be passed in fluid-through chamber 15 after aerator 3, recirculated water sprayed by the spray thrower 2 of packing cavity upper end and under, the nitrogenous waste gas of sulfur-bearing in bio-trickling filter 1 and recirculated water counter current contacting, regularly in recirculated water, add the nutrient solutions such as nitrogen phosphorus, to meet microbial growth needs, cleaned gas is discharged from the top vent 18 of bio-trickling filter 1, the solid and liquid impurities mixed liquor produced in purification process, Separation of Solid and Liquid is carried out by cyclone separation device 4, isolated liquid is recycled by water circulating pump 5, isolated solid is discharged to solid collection groove 11 and collects from outlet 19.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a sulfur-bearing, the treating apparatus of nitrogen waste gas, it is characterized in that, comprise bio-trickling filter, described bio-trickling filter is by upper conical-tube, cylindrical shell and cyclone separation device composition, described upper conical-tube is fixed on the top of described cylindrical shell, described cyclone separation device is fixed on the bottom of described cylindrical shell, sieve plate is horizontally installed with in described cylindrical shell, described cylindrical shell is divided into packing cavity and fluid-through chamber by described sieve plate, described packing cavity top is provided with spray thrower, the input of described spray thrower is connected with water circulating pump, between described spray thrower and described water circulating pump, valve is installed, described fluid-through chamber top is provided with aerator, described aerator is connected with air inlet pipe, described air inlet pipe installs static mixer, one end of described static mixer is connected with described water circulating pump, the liquid-phase outlet of described cyclone separation device is connected with water circulating pump.
2. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, described upper conical-tube is fixed on the top of described cylindrical shell by flange.
3. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, described cyclone separation device is fixed on the bottom of described cylindrical shell by flange.
4. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, the top of described upper conical-tube is provided with exhaust outlet, and the bottom of described cyclone separation device is provided with outlet.
5. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, the position of described sieve plate is at the middle part of described cylindrical shell.
6. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, uniform filling haydite in described packing cavity, is placed with bioelectrode in described haydite.
7. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, has circulation fluid in described bio-trickling filter, containing microorganism in described circulation fluid.
8. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, described static mixer is SV type static mixer.
9. the treating apparatus of sulfur-bearing according to claim 1, nitrogen waste gas, is characterized in that, described bio-trickling filter is provided with fixed support.
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| CN109316948A (en) * | 2018-08-31 | 2019-02-12 | 中国石油化工股份有限公司 | A kind of processing unit of the volatile organic gases of small molecule containing sludge |
| CN110180328B (en) * | 2019-06-11 | 2023-09-26 | 苏州仕净科技股份有限公司 | Industrial waste gas purifying treatment device |
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| US5106496A (en) * | 1988-04-27 | 1992-04-21 | Ciba-Geigy Corporation | Treatment of volatile organic substances at waste water treatment plants |
| JP3985886B2 (en) * | 1999-09-06 | 2007-10-03 | 株式会社荏原製作所 | Method and apparatus for treating exhaust gas containing nitrogen compounds |
| CN202387368U (en) * | 2011-12-28 | 2012-08-22 | 常州恒威净化设备有限公司 | Waste gas washing tower |
| CN203123792U (en) * | 2013-01-31 | 2013-08-14 | 东莞市绿羽环保净化工程有限公司 | Biological waste gas treatment device |
| CN203971748U (en) * | 2014-02-26 | 2014-12-03 | 武汉科技大学 | The treating apparatus of a kind of sulfur-bearing, nitrogen waste gas |
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