CN102716664A - Bio-trickling filter denitration tower - Google Patents
Bio-trickling filter denitration tower Download PDFInfo
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- CN102716664A CN102716664A CN2012101957764A CN201210195776A CN102716664A CN 102716664 A CN102716664 A CN 102716664A CN 2012101957764 A CN2012101957764 A CN 2012101957764A CN 201210195776 A CN201210195776 A CN 201210195776A CN 102716664 A CN102716664 A CN 102716664A
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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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Abstract
The invention relates to a denitration device for industrial flue gas, belongs to the field of environmental protection of chemical industry, and particularly relates to a bio-trickling filter denitration tower. The bio-trickling filter denitration tower is provided with a tower body, an exhaust chimney is mounted at the top of the tower body, and a flue gas inlet pipe is mounted on the lower portion of the tower body. The bio-trickling filter denitration tower is characterized in that a biological liquid circulation tank is arranged at the bottom of the tower body, an aerating device is mounted at the bottom of the biological liquid circulation tank, a support screen plate is mounted above the flue gas inlet pipe and positioned in the tower body, a plurality of layers of lightweight ceramsite fillers are laid on the support screen plate, a spray pipe is mounted above the support screen plate and positioned in the tower body, a liquid transport pipe is connected between the spray pipe and the biological liquid circulation tank, and a booster pump is mounted on the liquid transport pipe. The bio-trickling filter denitration tower solves the problems of low working efficiency, high cost, unsatisfactory denitration effect and the like of a traditional denitration device, and is mainly used for absorbing nitric oxide in the industrial flue gas.
Description
(1) technical field: the present invention relates to the denitrification apparatus of industrial smoke, belong to the chemical industry environmental protection field, especially a kind of bio-trickling denitrating tower.
The (2) background technology: at present, selective catalytic reduction (SCR) and SNCR method (SNCR) are mainly adopted in traditional denitration.The reducing agent that selective catalytic reduction is selected has urea, ammoniacal liquor and pure ammonia; When adopting urea to make reducing agent;, then solution pump is delivered in the hydrolytic tank earlier, generated ammonia with the water reaction after through heat exchanger solution being heated to reaction temperature the dissolving fully in container of urea solid particle; When adopting ammoniacal liquor to make reducing agent, be that 25% water containing ammonia is made its evaporation through heater, form ammonia and water vapour; When adopting pure ammonia to make reducing agent, be that liquefied ammonia is heated into ammonia in evaporimeter, being mixed into the ammonia volume content with the air of dilution blower fan then is to send into bio-trickling denitrating tower and flue gas hybrid reaction behind 5% the mist.Adopt selective catalytic reduction to need expensive catalyst, cost is higher.The SNCR method is that the urea solid particle is unloaded to the urea storage bin; Get into the dosing pond by metering feeding device, under the condition of heating, the urea solid particle formulation is become urea liquid with fresh water (FW); Deliver to the solution storage tank through the batching delivery pump; Urea liquid in the storage tank is delivered to spraying system before the tower through force (forcing) pump and conveyance conduit, carries out chemical reaction through being arranged in temperature province and the flue gas that atomizer around the tower body sprays into 900～1100 ℃ of tower bodies, reaches the purpose of denitration.More than two kinds of methods all need consume denitrfying agent, ammonia or urea, operating cost is higher, more therefore one-time investment designs a kind of bio-trickling denitrating tower that can address the above problem well and is very and be necessary.
The (3) summary of the invention: the object of the invention is exactly to solve problems such as the higher and denitration effect of traditional denitrification apparatus inefficiency, cost is undesirable, and a kind of bio-trickling denitrating tower is provided.
Concrete scheme of the present invention is: improve to traditional denitrification apparatus; It has tower body, and exhaust chimney is equipped with at the tower body top, and smoke inlet pipe is equipped with in the tower body bottom; It is characterized in that: said tower body bottom is provided with the biological fluids circulatory pool, and aerator is equipped with in biological fluids circulatory pool bottom; The smoke inlet pipe top is positioned at tower body the support web plate is housed, and supporting the web plate upper berth has several layers light ceramic filler; Support the web plate upper position shower is housed in tower body, be connected with woven hose between shower and the biological fluids circulatory pool, force (forcing) pump is housed on the woven hose.
The end that smoke inlet pipe described in the present invention puts in the tower body is downward bell mouth shape.
Supporting the web plate upper berth described in the present invention has two-layer light ceramic filler, and the thickness of every layer of light ceramic filler is 400～800mm.
In order to strengthen the spray effect of biological fluids, biological fluids is evenly distributed on the light ceramic filler, the spray head that several are arranged down is housed on the shower described in the present invention.
Regulate the spray flux of biological fluids for ease, also add control valve described in the present invention on the woven hose.
The present invention adopts biotechnology to absorb the nitrogen oxide in the industrial smoke; Only need to add a denitration microorganism fungus kind and just can use for a long time, do not need catalyst and denitrfying agent, greatly reduce cost; Also denitration efficiency has been brought up to 90% simultaneously, brought huge economic benefit to enterprise.
The (4) description of drawings:
Fig. 1 is a structural representation of the present invention.
Among the figure: the 1-spray head, the 2-tower body, 3-supports web plate, 4-smoke inlet pipe, 5-biological fluids circulatory pool, 6-aerator, 7-force (forcing) pump, 8-control valve, 9-woven hose, 10-light ceramic filler, 11-shower, 12-exhaust chimney.
The (5) specific embodiment:
Referring to Fig. 1, the present invention has tower body 2, and exhaust chimney 12 is equipped with at tower body 2 tops; Smoke inlet pipe 4 is equipped with in tower body 2 bottoms; The end that smoke inlet pipe 4 puts in the tower body 2 is downward bell mouth shape, and particularly: said tower body 2 bottoms are provided with biological fluids circulatory pool 5, and aerator 6 is equipped with in biological fluids circulatory pool 5 bottoms, and (this aerator 6 belongs to prior art; Can directly on market, buy, mainly be used for) to 5 oxygen supplys of biological fluids circulatory pool; Smoke inlet pipe 4 tops are positioned at tower body 2 support web plate 3 are housed; Support and be covered with two-layer light ceramic filler 10 (the common haydite of these light ceramic filler 10 employings on the web plate 3; Can directly on market, buy, belong to prior art), the thickness of every layer of light ceramic filler 10 is 400～800mm; Support web plate 3 tops are positioned at tower body 2 shower 11 are housed, and six spray heads of arranging down 1 are housed on the shower 11, are connected with woven hose 9 between shower 11 and the biological fluids circulatory pool 5, and force (forcing) pump 7 and control valve 8 are housed on the woven hose 9; Promptly constituted the present invention.
Operation principle of the present invention is: industrial smoke enters in the tower body 2 through smoke inlet pipe 4; Biological fluids in the biological fluids circulatory pool 5 is sprayed with shower 11 through woven hose 9 and is shone on light ceramic filler 10; Biological fluids forms on light ceramic filler 10 hangs film; During industrial smoke process light ceramic filler 10; The nitrogen oxide that denitration biological inoculum in the biological fluids on the light ceramic filler 10 can absorb in the industrial smoke generates the nitrogen G&W, accomplishes denitration work, and the flue gas after the denitration discharges through exhaust chimney 12 again.In the process of work; When the extension film on the light ceramic filler 10 increased, tower body 2 internal resistances increased, and needed to increase through control valve 8 spray flux of biological fluids; Light ceramic filler 10 surfaces are washed; The biological residual body of metabolism is dropped in the biological fluids circulatory pool 5, then control valve 8 is modulated original setting value again, denitration work is carried out in circulation.
Claims (5)
1. a bio-trickling denitrating tower has tower body, and exhaust chimney is equipped with at the tower body top, and smoke inlet pipe is equipped with in the tower body bottom, it is characterized in that: said tower body bottom is provided with the biological fluids circulatory pool, and aerator is equipped with in biological fluids circulatory pool bottom; The smoke inlet pipe top is positioned at tower body the support web plate is housed, and supporting the web plate upper berth has several layers light ceramic filler; Support the web plate upper position shower is housed in tower body, be connected with woven hose between shower and the biological fluids circulatory pool, force (forcing) pump is housed on the woven hose.
2. a kind of bio-trickling denitrating tower according to claim 1 is characterized in that: the end that said smoke inlet pipe puts in the tower body is downward bell mouth shape.
3. a kind of bio-trickling denitrating tower according to claim 1 is characterized in that: there is two-layer light ceramic filler on said support web plate upper berth, and the thickness of every layer of light ceramic filler is 400～800mm.
4. a kind of bio-trickling denitrating tower according to claim 1 is characterized in that: the spray head that several are arranged down is housed on the said shower.
5. a kind of bio-trickling denitrating tower according to claim 1 is characterized in that: also add control valve on the said woven hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101957764A CN102716664A (en) | 2012-06-14 | 2012-06-14 | Bio-trickling filter denitration tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101957764A CN102716664A (en) | 2012-06-14 | 2012-06-14 | Bio-trickling filter denitration tower |
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| Publication Number | Publication Date |
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| CN102716664A true CN102716664A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101957764A Pending CN102716664A (en) | 2012-06-14 | 2012-06-14 | Bio-trickling filter denitration tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140370578A1 (en) * | 2013-06-18 | 2014-12-18 | China Petroleum & Chemical Corporation | Modified ceramsite packing useful for biomembrane trickling filter and a process for removing so2 from flue gas using the trickling filter |
| CN111495169A (en) * | 2020-04-22 | 2020-08-07 | 南京大学 | Method for removing high-load nitrogen oxides in waste gas by biological method direct acidification |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899671A (en) * | 2006-07-03 | 2007-01-24 | 云南大学 | Method for purifying nitrogen oxide in smoke by biological liquid phase catalytic oxidation |
| CN101513590A (en) * | 2009-02-19 | 2009-08-26 | 北京科技大学 | Processing device of ammoniacal odor and spray liquid and operation method thereof |
| CN202741000U (en) * | 2012-06-14 | 2013-02-20 | 湖北徐风环保科技有限公司 | Biotrickling filter denitrating tower |
-
2012
- 2012-06-14 CN CN2012101957764A patent/CN102716664A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899671A (en) * | 2006-07-03 | 2007-01-24 | 云南大学 | Method for purifying nitrogen oxide in smoke by biological liquid phase catalytic oxidation |
| CN101513590A (en) * | 2009-02-19 | 2009-08-26 | 北京科技大学 | Processing device of ammoniacal odor and spray liquid and operation method thereof |
| CN202741000U (en) * | 2012-06-14 | 2013-02-20 | 湖北徐风环保科技有限公司 | Biotrickling filter denitrating tower |
Non-Patent Citations (2)
| Title |
|---|
| 《环境工程学报》 20090930 谢志荣等 "生物法同时脱硫脱硝试验研究" 摘要,第1.1节,图1 1-5 第3卷, 第9期 * |
| 谢志荣等: ""生物法同时脱硫脱硝试验研究"", 《环境工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140370578A1 (en) * | 2013-06-18 | 2014-12-18 | China Petroleum & Chemical Corporation | Modified ceramsite packing useful for biomembrane trickling filter and a process for removing so2 from flue gas using the trickling filter |
| US9833740B2 (en) * | 2013-06-18 | 2017-12-05 | China Petroleum & Chemical Corporation | Modified ceramsite packing useful for biomembrane trickling filter and a process for removing SO2 from flue gas using the trickling filter |
| CN111495169A (en) * | 2020-04-22 | 2020-08-07 | 南京大学 | Method for removing high-load nitrogen oxides in waste gas by biological method direct acidification |
| CN111495169B (en) * | 2020-04-22 | 2021-07-30 | 南京大学 | Method for removing high-load nitrogen oxides in waste gas by biological method direct acidification |
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Application publication date: 20121010 |