CN104524909A - Dust collection device for wet desulfurization system - Google Patents
Dust collection device for wet desulfurization system Download PDFInfo
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- CN104524909A CN104524909A CN201410769061.4A CN201410769061A CN104524909A CN 104524909 A CN104524909 A CN 104524909A CN 201410769061 A CN201410769061 A CN 201410769061A CN 104524909 A CN104524909 A CN 104524909A
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Abstract
The invention relates to a dust collection device for a wet desulfurization system. The dust collection device comprises a first channel and a second channel which are sequentially communicated, wherein the tail end of the second channel is provided with a slurry pond, and a sprayer is arranged at a flue gas inlet of the first channel; a gas-liquid coupler is arranged below the sprayer, and the lower side wall of the second channel is provided with an exhaust pipeline communicated with the second channel; a slurry exhaust pipeline is arranged at one side of the slurry pond, and a circulating pump is arranged at the other side of the slurry pond, and is communicated with the sprayer through a circulating pipeline. The dust collection device provided by the invention has the beneficial effects of simple structure, easiness and convenience in operation, low manufacturing cost and broad prospects, and the concentration of dust in flue gas exhausted by the exhaust pipeline is less than 10mg/Nm<3> after the flue gas is processed.
Description
Technical field
The present invention relates to environmental technology field, relate to flue gases purification, be specifically related to a kind of dust arrester for wet desulfurization system.
Background technology
At present, China has put into effect strict environment protection emission index, and existing fire coal boiler fume dust emission is no more than 20mg/Nm
3, the discharge index in indivedual area is 5mg/Nm
3.Dust in flue gas not only particle diameter is small, and part dust exists in the form of an aerosol, and particle diameter is little especially, not easily adopts the process of simple Physical entrapment method.
In order to meet this discharge index, market occurs utilize wet-esp technology to carry out the device of dedusting; Wet type electric dust-removing device is arranged on wet desulphurization downstream, and when flue gas flows to electric precipitation electric field, dust and droplet are caught, collect under the effect of band point particle; Good dedusting effect after the method for employing electric precipitation, but its equipment is complicated, and material requirements is high, cost is high, core carries greatly, floor space is large and power consumption remains high.
Publication number is that the Chinese patent of CN103447153A discloses a kind of electric cleaner, comprise the housing that inside is provided with dedusting cavity, the side of housing communicates with inlet duct, opposite side communicates with exhaust apparatus, the dust collector pole of multilayer ground connection is provided with in described dedusting cavity, described dedusting cavity is divided into multiple exhaust gases passes be arranged in parallel by dust collector pole, described exhaust gases passes one end is corresponding with inlet duct, the other end is corresponding with exhaust apparatus, it is characterized in that: in each exhaust gases passes described, be provided with electrode, electrode in adjacent two exhaust gases passes is respectively the positive electrode be electrically connected with positive supply and the negative electrode be electrically connected with negative supply, the two ends of described multiple exhaust gases passes be arranged in parallel are furnished with the deep bead blocked exhaust gases passes end in interval respectively, the deep bead at described multiple exhaust gases passes two ends be arranged in parallel is interlaced arrangement.This electric cleaner complex structure, manufacturing cost is high, and power consumption is large, and poor practicability, can not meet existing demand.
Summary of the invention
In order to overcome defect of the prior art, the object of this invention is to provide a kind of dust arrester for wet desulfurization system.Described dust arrester is applied to the rear portion of wet desulfurization system, described dust arrester in conjunction with spray washing, revolve converge coupling, venturi passage multiple technologies, minute dusts is reunited, increases and remove.
The present invention is achieved by the following technical solutions:
For a dust arrester for wet desulfurization system, comprise the first passage and second channel that are communicated with successively, the end of second channel is provided with stock tank; The smoke inlet place of first passage is provided with spray thrower, the below of spray thrower is provided with gas-liquid coupler, and the lower wall of second channel is provided with the discharge duct be communicated with it, and described stock tank side is provided with plasma discharge pipeline, opposite side is provided with circulating pump, and described circulating pump is communicated with spray thrower by circulating line.
Described technical scheme is preferably, and described second channel adopts venturi passage.
Described technical scheme is preferably, and is provided with demister between described discharge duct and second channel.
Described technical scheme is preferably, and described spray thrower is set to multiple, and from top to bottom sets gradually.
Described technical scheme is preferably, and described spray thrower is provided with control valve.
Described technical scheme is preferably, and the sidewall of described stock tank is provided with observation window.
Described technical scheme is preferably, and the exit of described discharge duct is provided with the axial flow blower for outside exhausting.
Described technical scheme is preferably, and is provided with screen pack between described stock tank and circulating pump.
The mechanism of dust arrester of the present invention is: the particle diameter increasing dust-laden droplet in flue gas, improves its movement velocity, under gravity simultaneously, dust-laden droplet is separated with flue gas, thus reaches the object of purifying smoke.
Compared with prior art, superior effect of the present invention is: structure is simple, easy and simple to handle, low cost of manufacture, and in the flue gas of being discharged by discharge duct after treatment, dust content is lower than 10mg/Nm
3, have broad prospects.
Accompanying drawing explanation
Fig. 1 is dust arrester first example structure schematic diagram of the present invention;
Fig. 2 is dust arrester second example structure schematic diagram of the present invention.
Accompanying drawing mark is as follows:
1-first passage, 11-spray thrower, 111-control valve, 12-gas-liquid coupler, 2-second channel, 21-discharge duct, 211-axial flow blower, 22-demister, 3-stock tank, 31-plasma discharge pipeline, 32-circulating pump, 33-circulating line, 34-observation window.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with accompanying drawing and example, the present invention is further elaborated.Specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, the dust arrester for wet desulfurization system of the present invention, comprise the first passage 1 and second channel 2 that are communicated with successively, the end of second channel 2 is provided with stock tank 3; The smoke inlet place of first passage 1 is provided with spray thrower 11, the below of spray thrower 11 is provided with gas-liquid coupler 12, the lower wall of second channel 2 is provided with the discharge duct 21 be communicated with it, demister 22 is provided with between described discharge duct 21 and second channel 2, described stock tank 3 side is provided with plasma discharge pipeline 31, opposite side is provided with circulating pump 32, and described circulating pump 32 is communicated with spray thrower 11 by circulating line 33.Further, described second channel 2 adopts venturi passage; Employing demister 22 reduces the dustiness in the flue gas of being discharged by described discharge duct 21.
Dust arrester of the present invention is applied to the rear portion of wet desulfurization system, ash-laden gas enters from first passage 1, spray after humidification through spray thrower 11, particle in described ash-laden gas adheres to drop particle diameter and becomes large, increase the carrier of adsorption particle, dust simultaneously, be conducive to the particle in flue gas, dust is reunited.Ash-laden gas after humidification is through described gas-liquid coupler 12, change below occurring under the effect of gas-liquid coupler 12: (1) ash-laden gas rotates, increase the collision between dust-laden droplet in ash-laden gas, the particle diameter of dust-laden droplet is increased further; (2) to increase in ash-laden gas free particle, probability that dust is combined with dust-laden droplet, described dust-laden droplet easily catches free particle, dust, is easy to the dust in separating flue; (3) blade of dust-laden droplet and gas-liquid coupler 12 collides, and dust-laden droplet increases further, assembles.Enter venturi passage through the ash-laden gas of gas-liquid coupler 12 and dust-laden droplet, in venturi passage, described ash-laden gas is compressed, and the smaller volume of ash-laden gas, collide between dust-laden droplet, reunite, the particle diameter of droplet increases further; The flow velocity of described ash-laden gas increases, and the dust-laden droplet flow velocity carried secretly in ash-laden gas also increases; Described dust-laden droplet is affected by gravity in dropping process, and the speed of described dust-laden droplet strengthens further.Lower end diameter due to venturi passage becomes large, the flow velocity of described ash-laden gas is reduced in the lower end of venturi passage, and discharged by discharge duct 21, but, dust-laden droplet in described ash-laden gas is in dropping process, density is increasing, leaves ash-laden gas under gravity and enters in the stock tank 3 of venturi passage end.
Embodiment 2
As shown in Figure 2, the invention provides another embodiment, compared with embodiment 1, distinguishing characteristics is, arranges two spray throwers 11, and from top to bottom set gradually in first passage 1 inside, the ash-laden gas entered by first passage 1, when spray thrower 11, extends the spray time of ash-laden gas; Each spray thrower 11 is equipped with control valve 111, is conducive to flexible control.
The sidewall of described stock tank 3 is provided with observation window 34, can observe the situation of stock tank 3 inside more easily, as the height of stock tank 3 internal liquid for operating personnel.The exit of described discharge duct 21 is provided with the axial flow blower 211 for outside exhausting, arranges axial flow blower 211 and is conducive to flue gas discharge, improve efficiency of dust collection.
Be provided with screen pack (not shown) between described stock tank 3 and circulating pump 32, the aperture of described screen pack is determined according to actual conditions, prevents the operation of the particle blocking circulating pump 32 of stock tank 3 inside.
Dust arrester of the present invention is applied to the rear portion of wet desulfurization system, described dust arrester washs in conjunction with spray thrower 11, gas-liquid coupler 12 revolves and converges coupling and adopt venturi passage technology, minute dusts is reunited, increases and remove, described spray thrower 11, gas-liquid coupler 12, demister 22, circulating pump 32, axial flow blower 211 are prior art, and those skilled in the art select voluntarily according to actual conditions; Described gas-liquid coupler 12 is as publication number gas-liquid coupler disclosed in CN202191836U.
The present invention is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present invention, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into scope of the present invention.
Claims (8)
1. for a dust arrester for wet desulfurization system, it is characterized in that, comprise the first passage and second channel that are communicated with successively, the end of second channel is provided with stock tank; The smoke inlet place of first passage is provided with spray thrower, the below of spray thrower is provided with gas-liquid coupler, and the lower wall of second channel is provided with the discharge duct be communicated with it, and described stock tank side is provided with plasma discharge pipeline, opposite side is provided with circulating pump, and described circulating pump is communicated with spray thrower by circulating line.
2. dust arrester according to claim 1, is characterized in that, described second channel adopts venturi passage.
3. dust arrester according to claim 1, is characterized in that, is provided with demister between described discharge duct and second channel.
4. dust arrester according to claim 1, is characterized in that, described spray thrower is set to multiple, and from top to bottom sets gradually.
5. the dust arrester according to claim 1 or 4, is characterized in that, described spray thrower is provided with control valve.
6. dust arrester according to claim 1, is characterized in that, the sidewall of described stock tank is provided with observation window.
7. dust arrester according to claim 1 and 2, is characterized in that, the exit of described discharge duct is provided with the axial flow blower for outside exhausting.
8. dust arrester according to claim 1, is characterized in that, is provided with screen pack between described stock tank and circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769061.4A CN104524909A (en) | 2014-12-12 | 2014-12-12 | Dust collection device for wet desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769061.4A CN104524909A (en) | 2014-12-12 | 2014-12-12 | Dust collection device for wet desulfurization system |
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| Publication Number | Publication Date |
|---|---|
| CN104524909A true CN104524909A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410769061.4A Pending CN104524909A (en) | 2014-12-12 | 2014-12-12 | Dust collection device for wet desulfurization system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232308Y (en) * | 1995-09-26 | 1996-08-07 | 尹长志 | Wet multi-stage desulfur dust remover |
| CN2822752Y (en) * | 2005-06-07 | 2006-10-04 | 孙克勤 | Flue gas besulfurization absorption column |
| US20110002829A1 (en) * | 2009-07-06 | 2011-01-06 | Mitsubishi Heavy Industries, Ltd. | Mercury reduction system and mercury reduction method of flue gas containing mercury |
| CN202191836U (en) * | 2011-08-02 | 2012-04-18 | 何平 | Gas-liquid coupler for wet desulphurization device and wet desulphurization device |
| CN204320019U (en) * | 2014-12-12 | 2015-05-13 | 北京中能诺泰节能环保技术有限责任公司 | A kind of dust arrester for wet desulfurization system |
-
2014
- 2014-12-12 CN CN201410769061.4A patent/CN104524909A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232308Y (en) * | 1995-09-26 | 1996-08-07 | 尹长志 | Wet multi-stage desulfur dust remover |
| CN2822752Y (en) * | 2005-06-07 | 2006-10-04 | 孙克勤 | Flue gas besulfurization absorption column |
| US20110002829A1 (en) * | 2009-07-06 | 2011-01-06 | Mitsubishi Heavy Industries, Ltd. | Mercury reduction system and mercury reduction method of flue gas containing mercury |
| CN202191836U (en) * | 2011-08-02 | 2012-04-18 | 何平 | Gas-liquid coupler for wet desulphurization device and wet desulphurization device |
| CN204320019U (en) * | 2014-12-12 | 2015-05-13 | 北京中能诺泰节能环保技术有限责任公司 | A kind of dust arrester for wet desulfurization system |
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Application publication date: 20150422 |