CN102389706A - Dust-gas mixing device for semi-dry desulphurization reactors - Google Patents

Dust-gas mixing device for semi-dry desulphurization reactors Download PDF

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Publication number
CN102389706A
CN102389706A CN2011103242634A CN201110324263A CN102389706A CN 102389706 A CN102389706 A CN 102389706A CN 2011103242634 A CN2011103242634 A CN 2011103242634A CN 201110324263 A CN201110324263 A CN 201110324263A CN 102389706 A CN102389706 A CN 102389706A
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CN
China
Prior art keywords
dust
gas mixing
semi
grey
distribution grid
Prior art date
Application number
CN2011103242634A
Other languages
Chinese (zh)
Inventor
张永
黄国义
孟银灿
应可可
朱大炯
葛介龙
詹王祥
Original Assignee
浙江菲达脱硫工程有限公司
浙江菲达环保科技股份有限公司
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Application filed by 浙江菲达脱硫工程有限公司, 浙江菲达环保科技股份有限公司 filed Critical 浙江菲达脱硫工程有限公司
Priority to CN2011103242634A priority Critical patent/CN102389706A/en
Publication of CN102389706A publication Critical patent/CN102389706A/en

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Abstract

The invention discloses a dust-gas mixing device for semi-dry desulphurization reactors, which comprises a dust-gas mixing section, wherein the lower port of the dust-gas mixing section is a flue gas inlet, the upper port of the dust-gas mixing section is a flue gas outlet, and the cross-sectional area of the flue gas outlet is greater than that of the flue gas inlet; the right side face of the dust-gas mixing section is provided with a mixed dust inlet; and the inside of the dust-gas mixing section below the mixed dust inlet is provided with a declivitous distributing plate. The dust-gas mixing device disclosed by the invention has the advantages that flue gas is fed into the dust-gas mixing device from the flue gas inlet at the lower part of the dust-gas mixing section, and mixed dust is fed into the dust-gas mixing device from the mixed dust inlet; and under the action of the distributing plate, the mixed dust and the flue gas are excited and mixed and uniformly distributed in the whole cross section of the dust-gas mixing device, so that a flue gas purifying device keeps efficient operation.

Description

A kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor

Technical field

The present invention relates to a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor.

Background technology

Normal utilization rate and the desulfuration efficiency that adopts desulphurization ash circulation humidifying technology to improve desulfurizing agent of semi-dry process flue gas desulphurization technology; Flue gas desulfurization gets into reactor after deduster removes the most of desulphurization ash and the back mode through overflow of fresh desulfurizing agent humidification mixing of getting off; Remove materials such as sulfur in smoke with the hot flue gas haptoreaction that boiler comes out; Circulation through desulphurization ash; Effective desulfurizing agent content increases greatly in the reactor, has improved desulfuration efficiency, and the load of ash also improves greatly in the reactor.Whether on the cross section, evenly distributing behind the combination ash entering reactor, it is big related that flue gas desulfurization effect quality is had, also the stable operation to reactor has certain influence.

When existing grey gas mixing arrangement gets into reactor in the humidification combination ash overflow of a large amount of desulphurization circulating ashes and fresh desulfurizing agent; Can not on the whole cross section of reactor, evenly distribute, gas cleaning can not efficiently be moved, the circulation of a large amount of desulphurization ash; Increased ash load in the reactor; Exhaust gas volumn hour, exhaust gases passes is stopped up in the whereabouts that is prone to take place combination ash.

Summary of the invention

The object of the present invention is to provide a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor; Can effectively solve existing grey gas mixing arrangement and can not the humidification combination ash evenly be distributed the problem that gas cleaning can not efficiently be moved on the whole cross section of reactor.

In order to solve the problems of the technologies described above; The present invention realizes through following technical scheme: a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor; Comprise grey gas mixer; The lower port of said grey gas mixer is a smoke inlet, and the port of said grey gas mixer is an exhanst gas outlet, and the cross-sectional area of said exhanst gas outlet is greater than the cross-sectional area of smoke inlet; The right flank of said grey gas mixer has the combination ash inlet, is provided with downward-sloping distribution grid in the grey gas mixer of said combination ash inlet below.

Preferably, it is parallel after the switching of the left side of said distribution grid has lengthened plate, said lengthened plate to rout up with distribution grid; When flue gas flow hour, use lengthened plate to reduce the flue gas circulation area, increase velocity of flue gas, promote the lifting force of ash, make combination ash can not fall to causing exhaust gases passes to stop up.

Preferably, dual-side is equipped with dust block board before and after the said distribution grid; Dust block board makes combination ash be unlikely to along front and back that side plate falls, and influences the even distribution of combination ash.

Preferably, the cross section of said dust block board is a right angled triangle, and said dust block board broadens from right to left gradually; Make things convenient for combination ash to glide, the combination ash at edge is drawn close to the centre as far as possible along distribution grid.

Preferably, said dust block board right-hand member drift angle is β, and said β is 5~10 °, and the height of said dust block board is 80~150mm; This angle of dust block board can glide combination ash preferably along its side, the excessive height of dust block board can cause waste, and crossing short combination ash can cover from dust block board.

Preferably; The cross section of said grey gas mixer is a rectangle; The left end of said smoke inlet and exhanst gas outlet is on same perpendicular, and the left side of said smoke inlet and the distance of right edge are L2, and said distribution grid left end is positioned at the left side of smoke inlet right plate in the projection of vertical direction; Said distribution grid left end is L1 apart from the distance of smoke inlet right plate, and said L1 is 10%~30% of a L2 length; Best distribution grid outreach can make combination ash mix comparatively uniformly with flue gas.

Preferably, it is L3 apart from the horizontal range on the left of the smoke inlet that said lengthened plate is routed up the back, and the left side of said exhanst gas outlet and the distance of right edge are L4, and the length of said L3 is 20%~50% of L4 length; The best outreach of lengthened plate hour can promote velocity of flue gas preferably at flue gas flow.

Compared with prior art; Advantage of the present invention is: flue gas gets into from the smoke inlet of grey gas mixer bottom; Combination ash gets into from combination ash inlet, and the effect through distribution grid makes combination ash mix to be incorporated in the whole cross section with the flue gas excitation evenly to distribute, make smoke eliminator keep efficiently moving.

Description of drawings

Fig. 1 is a kind of structural representation that is used for the grey gas mixing arrangement of semi-dry desulphurization reactor of the present invention;

Fig. 2 is the cutaway view of A-A among Fig. 1.

The specific embodiment

Consult Fig. 1, Fig. 2 is a kind of embodiment that is used for the grey gas mixing arrangement of semi-dry desulphurization reactor of the present invention, a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor comprises grey gas mixer 1; The lower port of said grey gas mixer 1 is a smoke inlet 2, and the port of said grey gas mixer 1 is an exhanst gas outlet 3, and the cross-sectional area of said exhanst gas outlet 3 is greater than the cross-sectional area of smoke inlet 2; The right flank of said grey gas mixer 1 has combination ash inlet 4, and said combination ash enters the mouth and is provided with downward-sloping distribution grid 5 in the grey gas mixer 1 of 4 belows, and the left side switching of said distribution grid 5 has lengthened plate 8; It is parallel with distribution grid 5 that said lengthened plate 8 is routed up the back; Said distribution grid 5 front and back dual-sides are equipped with dust block board 6, and the cross section of said dust block board 6 is a right angled triangle, and said dust block board 6 broadens from right to left gradually; Said dust block board 6 right-hand member drift angles are β; Said β is 5~10 °, and the height of said dust block board 6 is 80~150mm, and the cross section of said grey gas mixer 1 is a rectangle; The left end of said smoke inlet 2 and exhanst gas outlet 3 is on same perpendicular; The left side of said smoke inlet 2 and the distance of right edge are L2, and said distribution grid 5 left ends are positioned at the left side of smoke inlet 2 right plates in the projection of vertical direction, and said distribution grid 5 left ends are L1 apart from the distance of smoke inlet 2 right plates; Said L1 is 10%~30% of a L2 length; Horizontal range apart from smoke inlet 2 left sides after said lengthened plate 8 is routed up is L3, and the left side of said exhanst gas outlet 3 and the distance of right edge are L4, and the length of said L3 is 20%~50% of L4 length.

Extend until grey gas mixer 1 front and back side plate distribution grid 5 front and back; Flue gas gets into from the smoke inlet 2 of grey gas mixer 1 bottom; Combination ash gets into from combination ash inlet 4; Effect through distribution grid 5 makes combination ash and flue gas excitation mix to be incorporated in the whole cross section evenly to distribute, and dust block board 6 makes combination ash be unlikely to along front and back that side plate falls, and makes smoke eliminator keep efficient operation.Simultaneously when flue gas flow hour, available pneumatic or electric device drives lengthened plate 8 and rotates, and makes lengthened plate 8 rotate to distribution grid 5 to extending below the plane, reduces the flue gas circulation area, increases velocity of flue gas, improves the lifting force of ash.During normal the operation, lengthened plate 8 is positioned at distribution grid 5 belows.

The above is merely specific embodiment of the present invention, but technical characterictic of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of being done or modify all is encompassed among the claim of the present invention.

Claims (7)

1. grey gas mixing arrangement that is used for the semi-dry desulphurization reactor; Comprise grey gas mixer (1); The lower port of said grey gas mixer (1) is smoke inlet (2); The port of said grey gas mixer (1) is exhanst gas outlet (3); The cross-sectional area of said exhanst gas outlet (3) is characterized in that greater than the cross-sectional area of smoke inlet (2): the right flank of said grey gas mixer (1) has combination ash inlet (4), is provided with downward-sloping distribution grid (5) in the grey gas mixer (1) of said combination ash inlet (4) below.
2. a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor as claimed in claim 1 is characterized in that: it is parallel with distribution grid (5) that the left side switching of said distribution grid (5) has lengthened plate (8), said lengthened plate (8) to rout up the back.
3. according to claim 1 or claim 2 a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor, it is characterized in that: dual-side is equipped with dust block board (6) before and after the said distribution grid (5).
4. a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor as claimed in claim 3, it is characterized in that: the cross section of said dust block board (6) is a right angled triangle, said dust block board (6) broadens from right to left gradually.
5. a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor as claimed in claim 4, it is characterized in that: said dust block board (6) right-hand member drift angle is β, and said β is 5~10 °, and the height of said dust block board (6) is 80~150mm.
6. a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor as claimed in claim 2; It is characterized in that: the cross section of said grey gas mixer (1) is a rectangle; The left end of said smoke inlet (2) and exhanst gas outlet (3) is on same perpendicular; The left side of said smoke inlet (2) and the distance of right edge are L2; Said distribution grid (5) left end is positioned at the left side of smoke inlet (2) right plate in the projection of vertical direction, and said distribution grid (5) left end is L1 apart from the distance of smoke inlet (2) right plate, and said L1 is 10%~30% of a L2 length.
7. a kind of grey gas mixing arrangement that is used for the semi-dry desulphurization reactor as claimed in claim 6; It is characterized in that: it is L3 apart from the horizontal range on the left of the smoke inlet (2) that said lengthened plate (8) is routed up the back; The left side of said exhanst gas outlet (3) and the distance of right edge are L4, and the length of said L3 is 20%~50% of L4 length.
CN2011103242634A 2011-10-24 2011-10-24 Dust-gas mixing device for semi-dry desulphurization reactors CN102389706A (en)

Priority Applications (1)

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CN2011103242634A CN102389706A (en) 2011-10-24 2011-10-24 Dust-gas mixing device for semi-dry desulphurization reactors

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Application Number Priority Date Filing Date Title
CN2011103242634A CN102389706A (en) 2011-10-24 2011-10-24 Dust-gas mixing device for semi-dry desulphurization reactors

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2531864Y (en) * 2002-01-22 2003-01-22 浙江菲达环保科技股份有限公司 External circulation semi-dry type deacidifier
CN101402019A (en) * 2008-11-06 2009-04-08 北京博朗环境工程技术股份有限公司 Flue gas desulfurization technique of return current circulating fluidized bed in flow equalizing field
CN202270478U (en) * 2011-10-24 2012-06-13 浙江菲达脱硫工程有限公司 Ash gas mixing device used for semidry method desulfuration reactor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2531864Y (en) * 2002-01-22 2003-01-22 浙江菲达环保科技股份有限公司 External circulation semi-dry type deacidifier
CN101402019A (en) * 2008-11-06 2009-04-08 北京博朗环境工程技术股份有限公司 Flue gas desulfurization technique of return current circulating fluidized bed in flow equalizing field
CN202270478U (en) * 2011-10-24 2012-06-13 浙江菲达脱硫工程有限公司 Ash gas mixing device used for semidry method desulfuration reactor

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Application publication date: 20120328

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