CN201799212U - Compact type high-efficiency flue gas desulfurization device - Google Patents

Compact type high-efficiency flue gas desulfurization device Download PDF

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Publication number
CN201799212U
CN201799212U CN2010205124008U CN201020512400U CN201799212U CN 201799212 U CN201799212 U CN 201799212U CN 2010205124008 U CN2010205124008 U CN 2010205124008U CN 201020512400 U CN201020512400 U CN 201020512400U CN 201799212 U CN201799212 U CN 201799212U
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China
Prior art keywords
desulfurizing agent
desulfurization
flue gas
nozzle group
demist
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CN2010205124008U
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Chinese (zh)
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郑猛
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HANGZHOU YONGLING ENERGY TECHNOLOGY Co Ltd
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HANGZHOU YONGLING ENERGY TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a compact type high-efficiency flue gas desulfurization device. A demisting desulfurization chamber consists of a space desulfurization chamber, two demisting desulfurizers and a desulfurizing agent pool which are arranged from top to bottom. The upper part of the space desulfurization chamber is communicated with a boiler flue by an inlet flue, a desulfurization nozzle group and a flue baffle; an outlet flue is arranged between the lower demisting desulfurizer and the desulfurizing agent pool; the bottom of the desulfurizing agent is communicated with a desulfurizing agent waste liquid pipeline; one end of a circulating pump is connected with the desulfurization nozzle group, and the other end is connected with the side wall of the desulfurizing agent pool; the side wall of the desulfurizing agent pool is also provided with a desulfurizing agent inlet pipe. The desulfurization nozzle group is arranged at the inlet flue, an absorbing tower is omitted, the equipment space is reduced and the chemical reaction of space desulfurization is realized. By utilizing the principle of wall surface absorption, not only the recovery and the removing of fine desulfurizing agent drops in flue gas are realized, but also desulfurizing agent liquid films are uniformly distributed on the inner surfaces and the outer surfaces of steel pipes in the demisting desulfurizers, and the chemical reaction of surface desulfurization between the desulfurizing agent liquid films and the flue gas occurs again. Therefore, high-efficiency desulfurization is realized, flue gas drops are effectively removed and the structure is compact.

Description

A kind of compact high efficient flue gas desulfur device
Technical field
The utility model relates to a kind of flue gas desulfur device, particularly relates to a kind of compact high efficient flue gas desulfur device.
Background technology
In the desulfurizing fume of coalpowder boiler technology, normal dry method, semidry method and the wet method three class desulfur technologies of adopting, lime stone gypsum wet desulfur technology is most widely used, its essential characteristic is that flue gas fully mixes and chemical reaction with desulfurizer slurry in the absorption tower, flue gas after the desulfurization need be removed fine drop in the flue gas through special demister, its key problem in technology is the room and time that needs chemical reaction enough in the absorption tower, and flue gas flow rate can not be too high, thereby the absorption tower is bulky.Flue gas behind the chemical reaction need be removed fine drop in the flue gas through special demister, and the one, need enough spaces, the 2nd, there is the flue gas resistance problems of too.Therefore, conventional wet desulphurization exists structure huge, problems such as flue gas resistance loss height, and especially for old unit transformation, the place is difficult to arrange that one-time investment is very big.
Summary of the invention
In order to solve the problem that exists in the background technology, the purpose of this utility model is to provide a kind of compact high efficient flue gas desulfur device.Cancelled conventional absorption tower, demist absorbs and unites two into one.
The technical scheme that its technical problem that solves the utility model adopts is:
The utility model comprises boiler flue, gas baffle, gas approach, desulfurization nozzle group, demist desulfurization chamber, exhaust pass, circulating pump, desulfurizing agent inlet tube and desulfurizing agent sewer pipe; The demist desulfurization chamber is made up of space desulfurization chamber, upper and lower two spaced apart demist devulcanizers and desulfurizing agent pond from top to bottom; The desulfurization chamber top, space of demist desulfurization chamber links to each other with gas approach, and gas approach communicates with boiler flue behind desulfurization nozzle group and damper; Between following demist devulcanizer and desulfurizing agent pond exhaust pass is set, bottom, desulfurizing agent pond is connected with the desulfurizing agent sewer pipe, one end of circulating pump links to each other with the desulfurization nozzle group, linking to each other of desulfurizing agent pond sidewall between the other end of circulating pump and desulfurizing agent sewer pipe and the exhaust pass, the desulfurizing agent inlet tube is installed in the desulfurizing agent pond sidewall between desulfurizing agent sewer pipe and the exhaust pass, or the desulfurizing agent inlet tube is installed in the arrival end of circulating pump.
The radial section of described gas approach and demist desulfurization chamber is circular or square.
Described upper and lower demist devulcanizer structure is identical, combines by the thin-wall steel tube of a plurality of same structures is evenly distributed, and its profile is circular or square.
Described its profile of desulfurization nozzle group is an annular, has the five equilibrium or the desulfurization nozzle of five equilibrium not on the desulfurization nozzle group anchor ring of gas approach one side.
" day " font that described its profile of desulfurization nozzle group is a traverse has the five equilibrium or the desulfurization nozzle of five equilibrium not on " day " font desulfurization nozzle group of gas approach one side.
The useful effect that the utlity model has is:
The desulfurization nozzle group is arranged in gas approach, has cancelled conventional absorption tower, reduced the device space, and realized the space desulfurization chemical reaction.Utilize the principle of wall absorption, both realized that the recovery of tiny desulfurizing agent drop removed in the flue gas, make the uniform desulfurizing agent liquid film of thin-wall steel tube surfaces externally and internally in the demist devulcanizer again, and the surface devulcanization chemical reaction takes place once more with flue gas.Reach both high-efficiency desulfurizations, effectively remove the flue gas drop again, compact conformation reduces the purpose of investing.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the structural principle schematic diagram of annular desulfurization nozzle group.
Fig. 4 is the structural principle schematic diagram of " day " font desulfurization nozzle group.
Among the figure: 1, boiler flue, 2, gas baffle, 3, gas approach, 4, desulfurization nozzle group, 5, the space desulfurization chamber, 6, go up the demist devulcanizer, 7, desulfurizing agent pond, 8, exhaust pass, 9, circulating pump, 10, circulation pipe, 11, desulfurizing agent inlet tube, 12, desulfurizing agent sewer pipe, 13, following demist devulcanizer, 14, thin-wall steel tube.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model comprises boiler flue 1, gas baffle 2, gas approach 3, desulfurization nozzle group 4, demist desulfurization chamber, exhaust pass 8, circulating pump 9, desulfurizing agent inlet tube 11 and desulfurizing agent sewer pipe 12; The demist desulfurization chamber is made up of space desulfurization chamber 5, upper and lower two spaced apart demist devulcanizers 6,13 and desulfurizing agent pond 7 from top to bottom; Space desulfurization chamber 5 tops of demist desulfurization chamber link to each other with gas approach 3, and gas approach 3 communicates with boiler flue 1 behind desulfurization nozzle group 4 and damper 2; 7 in following demist devulcanizer 13 and desulfurizing agent pond are provided with exhaust pass 8,7 bottoms, desulfurizing agent pond are connected with desulfurizing agent sewer pipe 12, one end of circulating pump 9 links to each other with desulfurization nozzle group 4, linking to each other of desulfurizing agent pond 7 sidewalls between the other end of circulating pump 9 and desulfurizing agent sewer pipe 12 and the exhaust pass 8, desulfurizing agent inlet tube 11 is installed in desulfurizing agent pond 7 sidewalls between desulfurizing agent sewer pipe 12 and the exhaust pass 8, or desulfurizing agent inlet tube 11 is installed in the arrival end of circulating pump 9.
The radial section of described gas approach 3 and demist desulfurization chamber is circular or square.
Described upper and lower demist devulcanizer 6,13 structures are identical, and by thin-wall steel tube 14 evenly distributed the combining of a plurality of same structures, its profile is circular or square, and its profile is circular as shown in Figure 2.
As shown in Figure 3, described its profile of desulfurization nozzle group is an annular, has the five equilibrium or the desulfurization nozzle of five equilibrium not on the desulfurization nozzle group anchor ring of gas approach one side.
As shown in Figure 4, " day " font that described its profile of desulfurization nozzle group is a traverse has the five equilibrium or the desulfurization nozzle of five equilibrium not on " day " font desulfurization nozzle group of gas approach one side.
Operation principle of the present utility model is as follows:
When needs drop into this flue gas desulfur device, open gas baffle 2, sulfur-containing smoke gas enters gas approach 3 from boiler flue 1 by gas baffle 2, the desulfurizing agent fine droplets that is desulfurized nozzle sets 4 ejections is fully washed, the reaction of generation space chemistry, reach first step desulfurized effect, the flue gas that contains a large amount of desulfurizing agent fine droplets is after entering the demist desulfurization chamber, during by the thin-wall steel tube 14 on the last demist devulcanizer 6, a large amount of desulfurizing agent fine particles is caught absorption by thin-wall steel tube 14, form the desulfurizing agent liquid film at thin-wall steel tube 14 surfaces externally and internallies, sulfur-containing smoke gas once more with desulfurizing agent liquid film generation surface chemical reaction, realize desulfurization for the second time.13 effects of following demist devulcanizer are identical with last demist devulcanizer 6, play desulfurization once more and demist effect.The desulfurizing agent liquid film that thin-wall steel tube 14 surfaces externally and internallies form thickens and is torn the thicker drop of broken formation by flue gas, drop onto in the desulfurizing agent pond 7 because its gravity and flue gas carry the acting in conjunction of inertia, and the flue gas after the desulfurization is discharged from exhaust pass 8.
Density increases behind desulfurizing agent and the flue gas generation desulphurization reaction, sink to the bottom in desulfurizing agent pond 7, discharge by desulfurizing agent sewer pipe 12, fresh desulfurizing agent enters desulfurizing agent pond 7 by desulfurizing agent inlet tube 11, the middle and upper part liquid in desulfurizing agent pond 7 enters desulfurization nozzle group 4 once more by circulation pipe 10, circulating pump 9, reach recycling, fully improve the utilization ratio of desulfurizing agent.Fresh desulfurizing agent also can enter circulating pump 9 inlets by desulfurizing agent inlet tube 11, enters desulfurization nozzle group 4 with circulation fluid, realizes the without interruption and metering of fresh desulfurizing agent.
The circulation area of gas approach 3 is near boiler flue 1, the demist desulfurization chamber
Figure BSA00000251379900031
The flue gas circulation area only be equivalent to about 1.2 times of boiler flue 1 area, adopt space flue desulfurization, liquid film desulfurization and demist triplicity, compare with conventional wet desulphurization, cancelled conventional bulky absorption tower and the very big demister of resistance, demist absorbs and unites two into one, and flue gas flow rate is not strict with, and desulfuration efficiency is very high, compact conformation has been saved place and investment cost greatly.
The above-mentioned specific embodiment is used for the utility model of explaining; rather than the utility model limited; in the protection domain of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection domain of the present utility model.

Claims (5)

1. a compact high efficient flue gas desulfur device is characterized in that: comprise boiler flue (1), gas baffle (2), gas approach (3), desulfurization nozzle group (4), demist desulfurization chamber, exhaust pass (8), circulating pump (9), desulfurizing agent inlet tube (11) and desulfurizing agent sewer pipe (12); The demist desulfurization chamber is made up of space desulfurization chamber (5), upper and lower two spaced apart demist devulcanizers (6,13) and desulfurizing agent pond (7) from top to bottom; Space desulfurization chamber (5) top of demist desulfurization chamber links to each other with gas approach (3), and gas approach (3) communicates with boiler flue (1) behind desulfurization nozzle group (4) and damper (2); Between following demist devulcanizer (13) and desulfurizing agent pond (7) exhaust pass (8) is set, bottom, desulfurizing agent pond (7) is connected with desulfurizing agent sewer pipe (12), one end of circulating pump (9) links to each other with desulfurization nozzle group (4), linking to each other of desulfurizing agent pond (7) sidewall between the other end of circulating pump (9) and desulfurizing agent sewer pipe (12) and the exhaust pass (8), desulfurizing agent inlet tube (11) is installed in desulfurizing agent edge (7) sidewall between desulfurizing agent sewer pipe (12) and the exhaust pass (8), or desulfurizing agent inlet tube (11) is installed in the arrival end of circulating pump (9).
2. a kind of compact high efficient flue gas desulfur device according to claim 1 is characterized in that: the radial section of described gas approach (3) and demist desulfurization chamber is for circular or square.
3. a kind of compact high efficient flue gas desulfur device according to claim 1, it is characterized in that: described upper and lower demist devulcanizer (6,13) structure is identical, by evenly distributed the combining of thin-wall steel tube (14) of a plurality of same structures, its profile is circular or square.
4. a kind of compact high efficient flue gas desulfur device according to claim 1 is characterized in that: described its profile of desulfurization nozzle group is annular, has the five equilibrium or the desulfurization nozzle of five equilibrium not on the desulfurization nozzle group anchor ring of gas approach one side.
5. a kind of compact high efficient flue gas desulfur device according to claim 1, it is characterized in that: " day " font that described its profile of desulfurization nozzle group is a traverse has the five equilibrium or the desulfurization nozzle of five equilibrium not on " day " font desulfurization nozzle group of gas approach one side.
CN2010205124008U 2010-08-27 2010-08-27 Compact type high-efficiency flue gas desulfurization device Expired - Fee Related CN201799212U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101961597A (en) * 2010-08-27 2011-02-02 杭州勇灵能源科技有限公司 Compact high-efficiency flue gas desulphurization device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101961597A (en) * 2010-08-27 2011-02-02 杭州勇灵能源科技有限公司 Compact high-efficiency flue gas desulphurization device

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Granted publication date: 20110420

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