CN201195099Y - Flue gas desulfurization column of circulating fluidized bed - Google Patents
Flue gas desulfurization column of circulating fluidized bed Download PDFInfo
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- CN201195099Y CN201195099Y CN 200820071928 CN200820071928U CN201195099Y CN 201195099 Y CN201195099 Y CN 201195099Y CN 200820071928 CN200820071928 CN 200820071928 CN 200820071928 U CN200820071928 U CN 200820071928U CN 201195099 Y CN201195099 Y CN 201195099Y
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Abstract
The utility model relates to the technical field of combustion devices, in particular to a circulating fluid bed flue gas desulfurization tower for flue gas purification, which comprises a purified flue gas outlet, an atomizing water jet apparatus, recycle ash spouts, a desulfurizer inlet and a flue gas inlet which are arranged on the tower body. The circulating fluid bed flue gas desulfurization tower is characterized in that functional wind spouts are arranged below the recycle ash spouts on the tower body; at least one wind pressure desulfurizer jet apparatus is arranged below the functional wind spouts on the tower body; and a plurality of Venturi nozzles are arranged in a Venturi Laryngeal neck tube of the tower body. The structure of the wind pressure desulfurizer jet apparatus is as follows: an air inlet pipe is arranged, the desulfurizer inlet is arranged on the air inlet pipe, and the head end of the air inlet pipe extending into the tower body is provided with a diffusing nozzle; a plurality of spouts are arranged for the recycle ash spouts and the functional wind spouts. The utility model has the advantages of reasonable structure, little investment, low operating cost, reliable operation, high efficiency, wide application range, and the like.
Description
Technical field
The utility model relates to the combustion apparatus technical field, more particularly, is a kind of circulating fluid bed flue gas desulfurization tower that is used for gas cleaning.
Background technology
Because the sulfur dioxide gas pollution problem that burning is caused is the emphasis that countries in the world are administered always.At present, the limestone/gypsum wet method is mainly adopted in external and domestic large thermal power plant flue gas desulfurization, though that wet processing is used is ripe, desulfuration efficiency is high, have that system complex, investment are big, floor space is big, water consumption is more, operating cost is than problems such as height.Circulating fluid bed flue-gas desulfurizing device then has small investment, low, the efficient advantages of higher of operating cost, and its application prospect is boundless, has obtained increasing application, and its research is also more deep.Carry out a large amount of research for the circulating fluidized bed desulfur technology both at home and abroad, formed a lot of technology and patent, as: publication number is a kind of stack gas desulfurization and dust removal of circulating fluid bed integral method that the Chinese patent of CN1498673A proposes; Also as: publication number is a kind of reaction tower for stack gas desulfurization of dry type circulating fluid bed that the Chinese patent of CN1498673A proposes; And for example: the reverse-flow type circulating fluid bed flue-gas desulfurizing technology that German Wulff company proposes.Above prior art is summarized and is existed following defective: first, after entering desulfurizing tower as the desulfurizing agent of solid particle and recirculation ash, ideal effect is that solid particle enters the rapid fluidisation of the interior back of tower quilt and the particle flow field that is evenly distributed is arranged, flue gas is fully contacted with sorbent particle, accelerated reaction, improve the utilization rate of desulfurizing agent, prevent the ash that falls at the bottom of the tower simultaneously.And the general desulfurizing agent of prior art enters desulfurizing agent import of employing, the recirculation ash adopts machinery to carry or the air flume mode enters, can not disperse rapidly by the flue gas fluidisation after causing solid particle to enter in the tower, cause tower endoparticle Flow Field Distribution inhomogeneous, this has weakened particle undoubtedly and has mixed with flue gas, reduce sorbent utilization, influenced the raising of desulfuration efficiency; Easily make simultaneously particle agglomeration, fall ash in the desulfurizing tower bottom, along with unit capacity strengthens, the amount of solid particle increases this phenomenon and seems more serious.Be in operation and show as that desulfuration efficiency is low, that tower bottom falls ash is serious, influences system stable operation.The second, the desulfurizing tower internal upper part adopts the inner loop device, its objective is the increase inner loop, reduces outside grey internal circulating load, but has increased the desulfurizing tower resistance simultaneously, easily is stained with ash on the interior separator and stops up, and makes system's fluctuation of service.The 3rd, nozzle is taked centralized arrangement, causing water spray district's humidity too big, causes that easily wet wall is stained with ash; The 4th, the desulfurizing agent mode of entrance still has the slurries of employing mode of movement, and this mode is easily stopped up pipeline, nozzle, and atomizing effect is difficult for guaranteeing, contacts Yi Jutuan with ash in the tower and be stained with wall.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the purpose of this utility model provides a kind of rational in infrastructure, small investment, the circulating fluid bed flue gas desulfurization tower that operating cost is low, reliable, efficient is high, applied widely.
For realizing above-mentioned utility model purpose, the technical solution of the utility model realizes as follows: a kind of circulating fluid bed flue gas desulfurization tower, it comprises the straight tube that sets gradually from top to bottom, the venturi larynx neck tube composition tower body that is connected with the taper ash dropping hopper, on tower body, be provided with the purification exhanst gas outlet, the atomized water injection apparatus, recycle grey spout, the desulfurizing agent import, gas approach, its special character is: on described tower body, and be positioned at the grey spout of recirculation below and be provided with the function wind snout, on described tower body, and be positioned at function wind snout below and be provided with at least one blast desulfurizing agent injector, in the venturi larynx neck tube of described tower body, be provided with several Venturi nozzles.
The structure of described blast desulfurizing agent injector is, has blast pipe, and the desulfurizing agent import is set on blast pipe, and blast pipe stretches into that head end is provided with divergent nozzle in the tower body.
The grey spout of described recirculation recycles grey spout for several, and several recycle on the tower wall that grey spout all places the tower body sustained height, and several recycle the setting of staggering of grey spout and several desulfurizing agent injectors.
Described function wind snout is the several function wind snout, and the several function wind snout all places the tower wall of tower body sustained height and is positioned at the below that several recycle grey spout, and the several function wind snout recycles grey spout corresponding to several.
The utility model compared with prior art has the following advantages and beneficial effect:
Since tower body have venturi larynx neck tube and in venturi larynx neck tube, be provided with several Venturi nozzles, flue gas during through several Venturi nozzles in the venturi larynx neck tube flow velocity obtain increasing, be beneficial to the fluidisation of material in the tower; Adopt hollow structure in the straight tube of tower body, in the straight tube of tower body, do not install mechanical separation device additional, can effectively reduce the resistance of sweetening process, stop the generation of dust stratification, stifled ash on separator.
2. owing to be provided with at least one blast desulfurizing agent injector on the tower body and below being positioned at the function wind snout, desulfurizing agent air pressure is sprayed to be entered in the tower body, desulfurizing agent enters tower body, and to have speed fast and be fluidization, accelerated mixing of desulfurizing agent and flue gas, increase the gas-solid mixing intensity, improve desulfuration efficiency, fallen ash bottom preventing simultaneously.
3. several desulfurizing agent injectors and several recycle the setting of staggering of grey spout, have increased the charging aperture layout points, material is entered in the tower body evenly distribute, and are beneficial to fluidisation and carry; On the tower body and be positioned at recirculation and be provided with the function wind snout below the grey spout, make it can partly hold the desulfurization ash and mixes with flue gas, accelerate and the mixing of reinforcement main flow, be beneficial to fluidisation, improve desulfuration efficiency, prevent from simultaneously just to move downwards after ash from entering tower, deposit at the tower body inwall.
4. on several recycle the tower body on grey spout top, the atomized water injection apparatus is set, the nozzle of atomized water injection apparatus adopts gas, liquid two-phase atomizing nozzle structure, make the interior moisture distribution of tower reasonable, can guarantee that water enters with minimum atomizing particle size, strengthened the water ash and mixed and evaporation of water, can prevent to cause big water droplet to be stained with the possibility of wall dust stratification because of pressure atomization is bad.
5. the utility model circulating fluid bed flue gas desulfurization tower is rational in infrastructure, and small investment, operating cost is low, reliable, efficient is high, applied widely.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is a kind of circulating fluid bed flue gas desulfurization tower structural representation;
Fig. 2 is A-A among Fig. 1, B-B section enlarged diagram;
Fig. 3 is the structural representation that Fig. 1 apoplexy is pressed desulfurizing agent injector 2;
Fig. 4 be among Fig. 1 D to enlarged diagram;
Fig. 5 is that C-C analyses and observe enlarged diagram among Fig. 1.
Among the figure: 1 gas approach, 2 blast desulfurizing agent injectors, 3 function wind snouts, the grey spout of 4 recirculation, 5 atomized water injection apparatus, 6 taper ash dropping hoppers, 7 venturi larynx neck tubes, 8 straight tubes, 9 purify exhanst gas outlet, 10 desulfurizing agent imports, 11 blast pipes, 12 divergent nozzles, 13 several Venturi nozzles, 14 tower bodies.
The specific embodiment
With reference to Fig. 1～5, a kind of circulating fluid bed flue gas desulfurization tower of the present utility model has the straight tube 8, the venturi larynx neck tube 7 that set gradually from top to bottom and is connected with taper ash dropping hopper 6 and forms integrally-built tower body 14.On the sidewall of straight tube 8 upper ends of tower body 14, be provided with and purify exhanst gas outlet 9.Be provided with atomized water injection apparatus 5 on straight 8 sidewall of tower body 14, the nozzle of atomized water injection apparatus adopts gas, liquid two-phase atomizer, and atomized water injection apparatus 5 divides two to three layers to spray into along short transverse, and the utility model adopts three-decker.Being positioned at below the atomized water injection apparatus 5, being provided with the grey spout 4 of recirculation on the sidewall of the straight tube 8 of tower body 14, recycle grey spout 4 and recycle grey spout for several, several recycle on the sidewall of straight 8 sustained heights that grey spout all places tower body 14.Be positioned at below the grey spout 4 of recirculation, be provided with function wind snout 3 on the upper cone of straight tube 8 lower ends of tower body 14 or venturi larynx neck tube 7, function wind snout 3 of the present utility model is put on the upper cone of venturi larynx neck tube 7, function wind snout 3 is the several function wind snout, the several function wind snout all places on the sustained height upper cone of venturi larynx neck tube 7 of tower body 14, and the several function wind snout is provided with below several recycle grey spout.Be positioned at below the function wind snout 3, be provided with at least one blast desulfurizing agent injector 2 on the upper cone of the venturi larynx neck tube 7 of tower body 14, the utility model blast desulfurizing agent injector 2 is oppositely arranged two, and several recycle the setting of staggering of grey spout 4 and several desulfurizing agent injectors 2.The structure of blast desulfurizing agent injector 2 is, has blast pipe 11, and desulfurizing agent import 10 is set on blast pipe 11, and blast pipe 11 stretches into that head end is provided with divergent nozzle 12 in the tower body.In the venturi larynx neck tube 7 of tower body 14, be provided with several Venturi nozzles 13.On taper ash dropping hopper 6 sidewalls of tower body 14, be provided with gas approach 1.
A kind of circulating fluid bed flue gas desulfurization tower of the present utility model was through 10 months trial run, and effect is remarkable.Flue gas enters the larynx neck tube 7 of tower body 14 by gas approach 1, makes flue gas be accelerated through several Venturi nozzles 13.Desulfurizing agent is carried by blast desulfurizing agent injector 2 by air and enters in the tower body 14 with fluidization, the recirculation ash enters in the tower body 14 by function wind snout 3 with air or flue gas simultaneously by recycling grey spout 4, in tower body 14, carried by high speed flue gas fluidisation, this structure can make desulfurizing agent and recirculation ash be evenly distributed in tower body, accelerate and strengthen gas, consolidate and mix, prevent the ash that falls at the bottom of the tower simultaneously.Atomized water sprays into along short transverse layering after the solid fluidisation by being arranged in the atomized water injection apparatus 5 on top, makes tower body 14 interior moisture distribution reasonable, can prevent effectively that the knot of being stained with of desulfurizing agent from gathering group.Flue gas fully mixes with sorbent particle in tower body 14, sulfur in smoke, and other deleterious acidic gas such as sulfur trioxide reacts with desulfurizing agent in tower body 14.Flue gas is in uphill process, and a desulfurization ash part has increased the reaction time of tower endoparticle concentration and extension of absorbent because of deadweight is back in the tower again; A part enters deduster with flue gas from purifying exhanst gas outlet 9.Containing the intact desulfurizing agent of unreacted in the ash that deduster traps gets back in the tower body 14 by recirculation spout 4.
Claims (4)
1. circulating fluid bed flue gas desulfurization tower, it comprises the straight tube that sets gradually from top to bottom, the tower body that venturi larynx neck tube is connected with the taper ash dropping hopper and forms, on tower body, be provided with the purification exhanst gas outlet, the atomized water injection apparatus, recycle grey spout, desulfurizing agent import and gas approach, it is characterized in that: on described tower body, and be positioned at the grey spout of recirculation below and be provided with the function wind snout, on described tower body, and be positioned at function wind snout below and be provided with at least one blast desulfurizing agent injector, in the venturi larynx neck tube of described tower body, be provided with several Venturi nozzles.
2. a kind of circulating fluid bed flue gas desulfurization tower according to claim 1, it is characterized in that: the structure of described blast desulfurizing agent injector is, have blast pipe, the desulfurizing agent import is set on blast pipe, the head end in blast pipe stretches into tower body is provided with divergent nozzle.
3. a kind of circulating fluid bed flue gas desulfurization tower according to claim 1, it is characterized in that: the grey spout of described recirculation recycles grey spout for several, several recycle on the tower wall that grey spout all places the tower body sustained height, and several desulfurizing agent injectors and several recycle the setting of staggering of grey spout.
4. a kind of circulating fluid bed flue gas desulfurization tower according to claim 1, it is characterized in that: described function wind snout is the several function wind snout, the several function wind snout all places on the tower wall of tower body sustained height and is positioned at several and recycles grey spout below, and the several function wind snout recycles grey spout corresponding to several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820071928 CN201195099Y (en) | 2008-05-29 | 2008-05-29 | Flue gas desulfurization column of circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820071928 CN201195099Y (en) | 2008-05-29 | 2008-05-29 | Flue gas desulfurization column of circulating fluidized bed |
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| CN201195099Y true CN201195099Y (en) | 2009-02-18 |
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| CN 200820071928 Expired - Fee Related CN201195099Y (en) | 2008-05-29 | 2008-05-29 | Flue gas desulfurization column of circulating fluidized bed |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2263780A1 (en) * | 2009-06-18 | 2010-12-22 | ENVIROSERV GmbH | Exhaust gas purification assembly with nozzle variation |
| CN101284207B (en) * | 2008-05-29 | 2011-08-17 | 东北电力大学 | Circulating fluid bed flue gas desulfurization tower |
| CN103830995A (en) * | 2013-12-19 | 2014-06-04 | 枣庄矿业(集团)付村矸石热电有限公司 | Dry desulfurization spray nozzle |
| CN109647289A (en) * | 2019-01-16 | 2019-04-19 | 华陆工程科技有限责任公司 | A kind of iris type vinyl ethers product reactor |
| CN117225130A (en) * | 2023-09-26 | 2023-12-15 | 浙江沃乐科技有限公司 | Device for efficiently thermally decomposing harmful gas by venturi tube coupling plasma arc torch |
-
2008
- 2008-05-29 CN CN 200820071928 patent/CN201195099Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101284207B (en) * | 2008-05-29 | 2011-08-17 | 东北电力大学 | Circulating fluid bed flue gas desulfurization tower |
| EP2263780A1 (en) * | 2009-06-18 | 2010-12-22 | ENVIROSERV GmbH | Exhaust gas purification assembly with nozzle variation |
| WO2010145815A1 (en) * | 2009-06-18 | 2010-12-23 | Enviroserv Gmbh | Flue gas purification system with different nozzles |
| CN103830995A (en) * | 2013-12-19 | 2014-06-04 | 枣庄矿业(集团)付村矸石热电有限公司 | Dry desulfurization spray nozzle |
| CN109647289A (en) * | 2019-01-16 | 2019-04-19 | 华陆工程科技有限责任公司 | A kind of iris type vinyl ethers product reactor |
| CN117225130A (en) * | 2023-09-26 | 2023-12-15 | 浙江沃乐科技有限公司 | Device for efficiently thermally decomposing harmful gas by venturi tube coupling plasma arc torch |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20100529 |