CN102389692A - Desulfuration absorption tower system - Google Patents

Desulfuration absorption tower system Download PDF

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Publication number
CN102389692A
CN102389692A CN2011102360544A CN201110236054A CN102389692A CN 102389692 A CN102389692 A CN 102389692A CN 2011102360544 A CN2011102360544 A CN 2011102360544A CN 201110236054 A CN201110236054 A CN 201110236054A CN 102389692 A CN102389692 A CN 102389692A
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CN
China
Prior art keywords
absorption tower
swirler
spraying layer
layer
backset bed
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Pending
Application number
CN2011102360544A
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Chinese (zh)
Inventor
熊学云
吴其荣
聂华
王进
喻江涛
尹正明
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CPI Yuanda Environmental Protection Engineering Co Ltd
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CPI Yuanda Environmental Protection Engineering Co Ltd
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Priority to CN2011102360544A priority Critical patent/CN102389692A/en
Publication of CN102389692A publication Critical patent/CN102389692A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a desulfuration absorption tower system which comprises an absorption tower, wherein a smoke inlet and a smoke outlet are arranged on the absorption tower, the upper part of an inner cavity of the absorption tower is provided with a spraying layer, the inner cavity of the absorption tower is provided with a vortex layer between the spraying layer and the smoke inlet, the vortex layer is provided with a swirler, and the surface of the swirler, which is opposite to the spraying layer, is a cone surface. In the desulfuration absorption tower system, the vortex layer is arranged below the spraying layer, slurry sprayed from the spraying layer is sprayed on the cone surface of the swirler of the vortex layer, is uniformly distributed along the cone surface, and falls down from the circumference to form a uniform liquid curtain, thus the basic flowing condition of the slurry in the absorption tower is changed, the contact area and the contact time of smoke and the slurry are improved, the mixing degree of the smoke and the slurry is increased, and therefore, the desulfuration efficiency is increased. Because the desulfuration efficiency is increased, the slurry circulating quantity can be reduced, and the power consumption is reduced due to the arrangement of only one spraying layer.

Description

Desulphurization absorption tower system
Technical field
The invention belongs to the flue gases purification field, be specifically related to a kind of desulphurization absorption tower system.
Background technology
At present, the most of desulphurization systems of China have all adopted the lime lime-gypsum method, and its absorption tower system mainly contains liquid column tower and two kinds of forms of spray column.Liquid column tower upwards sprays spray through the fluid column nozzle, thereby reacts with sulfur in smoke, and spray column reacts through the slurries and the sulfur in smoke of the nozzle ejection of different spraying layers, thereby reaches the purpose of desulfurization.Two kinds of absorption tower systems all exist bigger power consumption, and the liquid column tower system need provide bigger injection power, and traditional spray column generally has 3 ~ 5 layers of spraying layer, and internal circulating load is bigger.
In spray column spray absorption reaction, flue gas contacts with slurries are reverse, and sulfur in smoke is diffusion mass transfer in absorbent slurry, and its absorption reaction speed and efficient depend on multiple factors such as the relative velocity, contact area, the time of staying of flue gas and slurries.In order to improve the efficient of desulphurization system; Each scholar has carried out extensive studies to this; The patent No. is that the utility model patent of 200520072369.X carries out the differentiation design to each zones of different absorbent distribution in each cross section, absorption tower and cross section; Make the gas-liquid relative velocity reach optimum, improved reaction efficiency to a certain extent.But the optimal control system need increase cost to a certain extent, does not change the basic flow condition in the spray column simultaneously, thereby limited to the raising of desulfuration efficiency.
Therefore, need a kind of novel desulphurization absorption tower system of exploitation, can change the basic flow condition the absorption tower in, improve flue gas in the absorption tower with the mixability of slurries, thereby improve desulfuration efficiency, in addition, can also reduce the slurries internal circulating load, the reduction power consumption.
Summary of the invention
In view of this, the invention provides a kind of desulphurization absorption tower system, can change the basic flow condition in the absorption tower, improve flue gas in the absorption tower with the mixability of slurries, thereby improve desulfuration efficiency.
Desulphurization absorption tower system of the present invention; Comprise the absorption tower; Said absorption tower is provided with smoke inlet and exhanst gas outlet, and inner chamber top, said absorption tower is provided with spraying layer, and said absorption tower inner chamber is provided with backset bed between spraying layer and smoke inlet; Be furnished with swirler on the said backset bed, the face that said swirler and spraying layer are relative is a coned face.
Further, the face that said swirler is relative with the flow of flue gas direction is an arc-shaped surface;
Further; Said backset bed is three layers; And the swirler interlaced arrangement on three layers of backset bed, the swirler edge of last layer backset bed is over against the swirler coned face of one deck backset bed down, and the spray nozzle of said spraying layer is over against the swirler coned face of the superiors' backset bed;
Further, be that the center is symmetrically distributed with the point more than three with conical summit on the swirler coned face of said the superiors backset bed, the spray nozzle of said spraying layer is over against this point more than three;
Further, said spraying layer is one deck;
Further, be provided with a circle liquid barrier respectively with intermediate layer backset bed and orlop backset bed corresponding position on the internal chamber wall of said absorption tower;
Further, the width of said liquid barrier is 50 ~ 100mm.
Beneficial effect of the present invention is: desulphurization absorption tower system of the present invention, below spraying layer, be provided with backset bed, and the slurries of spraying layer ejection are sprayed on the swirler coned face of backset bed; Slurries are opened by even cloth along coned face, then from around fall, form uniform liquid curtain; Thereby changed the basic flow condition of slurries in the absorption tower; Improve the contact area and the time of contact of flue gas and slurries, improved the mixability of flue gas and slurries, therefore improved desulfuration efficiency; In addition, the face that swirler is relative with the flow of flue gas direction is designed to arc-shaped surface, after flue gas upwards being flowed run into this arc-shaped surface, forms disturbance, Flue Gas Diffusion, thus make flue gas more abundant with mixing of slurries, further improved desulfuration efficiency; Because the present invention has improved desulfuration efficiency, therefore, the present invention can also reduce the slurries internal circulating load, and one deck spraying layer only is set, and has reduced power consumption.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below, wherein:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of swirler;
Fig. 3 is the plan structure sketch map of the superiors' backset bed;
Fig. 4 is the plan structure sketch map of intermediate layer backset bed;
Fig. 5 is the plan structure sketch map of orlop backset bed.
The specific embodiment
Below will carry out detailed description to the preferred embodiments of the present invention with reference to accompanying drawing.
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the structural representation of swirler, and is as shown in the figure; Desulphurization absorption tower system of the present invention comprises absorption tower 1, and said absorption tower 1 is provided with smoke inlet 11 and exhanst gas outlet 12; 1 inner chamber top, said absorption tower is provided with spraying layer 2; Said absorption tower 1 inner chamber is provided with backset bed 3 between spraying layer 2 and smoke inlet 11, be furnished with swirler 4 on the said backset bed 3, and said swirler 4 is a coned face 41 with spraying layer 2 relative faces; The slurries of spraying layer 2 ejections are sprayed on swirler 4 coned face 41 of backset bed 3; Slurries are opened by even cloth along coned face 41; Then from around fall, form uniform liquid curtain, thereby changed the basic flow condition of slurries in the absorption tower; Improve the contact area and the time of contact of flue gas and slurries, improved the mixability of flue gas and slurries.
As further improvement of the present invention, said swirler 4 faces relative with the flow of flue gas direction are arc-shaped surface 42; Flue gas forms disturbance after upwards flowing and running into this arc-shaped surface 42, Flue Gas Diffusion, thus make flue gas more abundant with mixing of slurries.
Like Fig. 1, Fig. 3, Fig. 4 and shown in Figure 5; In the present embodiment; Said backset bed 3 is three layers; And swirler 4 interlaced arrangement on three layers of backset bed 3, swirler 4 edges of last layer backset bed 3 are over against swirler 4 coned face 41 of one deck backset bed 3 down, and the spray nozzle of said spraying layer 2 is over against swirler 4 coned face 41 of the superiors' backset bed 3; The slurries of spraying layer 2 ejection are sprayed on swirler 4 coned face 41 of the superiors' backset bed 3, opened by even cloth, then from around fall; Form uniform liquid curtain, The curtain falls for liquid on swirler 4 coned face 41 of intermediate layer backset bed 3, opened by even cloth once more; And then fall on swirler 4 coned face 41 of orlop backset bed 3; Slurries disperse through three times, form three not good liquor curtains, have improved the contact area and the time of contact of flue gas and slurries greatly.Certainly, backset bed 3 is minimum can be one deck or two-layer, also can be provided with more than four layers and four layers, according to the practical application flexible design.
As shown in Figure 3, in the present embodiment, be that the center is symmetrically distributed with three points 43 with conical summit on swirler 4 coned face 41 of said the superiors backset bed 3, the spray nozzle of said spraying layer 2 is over against these three points; 3 in the slurries of spraying layer 2 ejections are injected on swirler 4 coned face 41 simultaneously, form liquid curtain very uniformly; Certainly, can also be to spray more than 3 the time.
In the present embodiment, said spraying layer 2 is one deck; Because the present invention has improved desulfuration efficiency, therefore, can reduce the slurries internal circulating load, and one deck spraying layer 2 only is set, and has reduced power consumption.
As further improvement of the present invention, be provided with a circle liquid barrier 5 respectively with intermediate layer backset bed 3 and orlop backset bed 3 corresponding positions on 1 internal chamber wall of said absorption tower; The optimum width of said liquid barrier 5 is 50 ~ 100mm; The slurries that liquid barrier 5 will be ejected into absorption tower 1 internal chamber wall block, and deliver on swirler 4 coned face 41, have prevented that 1 internal chamber wall flows down slurries along the absorption tower, and with the minimizing that contacts of flue gas.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although through invention has been described with reference to the preferred embodiments of the present invention; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and scope of the present invention that do not depart from appended claims and limited.

Claims (7)

1. desulphurization absorption tower system; Comprise absorption tower (1); Said absorption tower (1) is provided with smoke inlet (11) and exhanst gas outlet (12); Inner chamber top, said absorption tower (1) is provided with spraying layer (2); It is characterized in that: said absorption tower (1) inner chamber is positioned between spraying layer (2) and the smoke inlet (11) and is provided with backset bed (3), is furnished with swirler (4) on the said backset bed (3), and the face that said swirler (4) is relative with spraying layer (2) is coned face (41).
2. desulphurization absorption tower system according to claim 1 is characterized in that: the face that said swirler (4) is relative with the flow of flue gas direction is arc-shaped surface (42).
3. desulphurization absorption tower system according to claim 1 and 2; It is characterized in that: said backset bed (3) is three layers; And swirler (4) interlaced arrangement on three layers of backset bed (3); Swirler (4) edge of last layer backset bed (3) is over against swirler (4) coned face (41) of following one deck backset bed (3), and the spray nozzle of said spraying layer (2) is over against swirler (4) coned face (41) of the superiors' backset bed (3).
4. desulphurization absorption tower system according to claim 3; It is characterized in that: it is that the center is symmetrically distributed with the point (43) more than three that swirler (4) coned face (41) of said the superiors backset beds (3) goes up with conical summit, and the spray nozzle of said spraying layer (2) is over against this point (43) more than three.
5. desulphurization absorption tower system according to claim 4 is characterized in that: said spraying layer (2) is one deck.
6. desulphurization absorption tower system according to claim 3 is characterized in that: be provided with a circle liquid barrier (5) respectively with intermediate layer backset bed (3) and orlop backset bed (3) corresponding position on the internal chamber wall of said absorption tower (1).
7. desulphurization absorption tower system according to claim 6 is characterized in that: the width of said liquid barrier (5) is 50 ~ 100mm.
CN2011102360544A 2011-08-17 2011-08-17 Desulfuration absorption tower system Pending CN102389692A (en)

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CN2011102360544A CN102389692A (en) 2011-08-17 2011-08-17 Desulfuration absorption tower system

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Application Number Priority Date Filing Date Title
CN2011102360544A CN102389692A (en) 2011-08-17 2011-08-17 Desulfuration absorption tower system

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CN102389692A true CN102389692A (en) 2012-03-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154335A (en) * 1990-11-10 1993-06-22 Babcock Hitachi Kk Dry exhaust gas desulfurizer and method
CN2600158Y (en) * 2003-03-03 2004-01-21 陈建球 High-efficient flue gas desulfurization dust elimination device
CN201300034Y (en) * 2008-08-28 2009-09-02 浙江天蓝脱硫除尘有限公司 Vortex-sprinkling combined desulphurizing device
CN101642671A (en) * 2009-08-28 2010-02-10 史剑武 Sword type rotational flow device used for dust-removing desulfurizing tower
CN201684530U (en) * 2010-05-17 2010-12-29 福建省沙县金沙白炭黑制造有限公司 Swirl desulfurization tower used for wet-type flue gas desulfurization

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154335A (en) * 1990-11-10 1993-06-22 Babcock Hitachi Kk Dry exhaust gas desulfurizer and method
CN2600158Y (en) * 2003-03-03 2004-01-21 陈建球 High-efficient flue gas desulfurization dust elimination device
CN201300034Y (en) * 2008-08-28 2009-09-02 浙江天蓝脱硫除尘有限公司 Vortex-sprinkling combined desulphurizing device
CN101642671A (en) * 2009-08-28 2010-02-10 史剑武 Sword type rotational flow device used for dust-removing desulfurizing tower
CN201684530U (en) * 2010-05-17 2010-12-29 福建省沙县金沙白炭黑制造有限公司 Swirl desulfurization tower used for wet-type flue gas desulfurization

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Application publication date: 20120328