CN104437056B - A kind of flue gas desulfurization device - Google Patents
A kind of flue gas desulfurization device Download PDFInfo
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- CN104437056B CN104437056B CN201410696634.5A CN201410696634A CN104437056B CN 104437056 B CN104437056 B CN 104437056B CN 201410696634 A CN201410696634 A CN 201410696634A CN 104437056 B CN104437056 B CN 104437056B
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Abstract
The invention discloses a kind of flue gas desulfurization device, including: casing, spraying mechanism, regenerated reactor and circulating pump, wherein casing is provided with air inlet pipe and escape pipe, inside is provided with the dividing plate being misplaced up and down, bottom half is divided into the first filter pocket and the second filter pocket, bottom it, is respectively equipped with the drain branch pipe of connected drainage pipe；Spraying mechanism, is connected with the first feed tube of the first desulfurizing agent, the second feed tube including inside and connects the first feed liquor arm of the second feed tube, and the first feed tube and the connection of the second feed tube, the first related shower nozzle of feed liquor arm is arranged on the top of casing；Regenerated reactor, one side surface is provided with the first inlet of connected drainage pipe, and side surface corresponding thereto is provided with liquid outlet, is equipped with the second desulfurizing agent bottom regenerated reactor；Circulating pump, connects liquid outlet and second feed tube of regenerated reactor.The flue gas desulfurization device desulfurized effect of the present invention is good, and regenerated reactor is removed contamination simple to operate, it is not necessary to the desulfurizing agent in regenerated reactor of draining, conservation.
Description
Technical field
The present invention relates to atmosphere polluting controling technology field, be specifically related to a kind of flue gas desulfurization device.
Background technology
China is coal-fired big country, and in primary energy composition, fire coal accounts for 75%, and the 90% of SO2 emissions
Then coming from burning of coal, wherein the discharge of sulfur dioxide causes acid rain heavy damage ecological environment, shadow
Ring the healthy of people.
Flue gas desulfurization technique is the main path solving smoke emissioning pollution at present, and wherein Dual alkali flue gas takes off
After sulphur technology uses sodium base desulfurizer sulfur dioxide absorption, desulfurization product is entered regenerated reactor calcium hydroxide
Carry out reducing/regenerating, and the sodium base desulfurizer regenerated can recycle.This method exists because of NaOH
Solution degree in water is big, does not results in supersaturation crystallization, causes Incrustation of pipe to block, and reduce investment
And operating cost, extensively apply in sulfur removal technology, but existing desulfurizing tower is higher, difficult arrangement, clear
Managing loaded down with trivial details, desulfurized effect is the best, and regenerated reactor is when cleaning precipitation, and meeting disturbance recirculated water, at the bottom of pond
Precipitation is stirred and causes recirculated water to become cloudy, and causes regenerated reactor precipitation to be deteriorated with the effect of desulfurizer regeneration.
Summary of the invention
The purpose of the present invention is that and overcomes existing technological deficiency, it is provided that a kind of desulfurized effect is good, regeneration
Pond is removed contamination simple to operate, it is not necessary to the desulfurizing agent in regenerated reactor of draining, the flue gas desulfurization device of conservation.
The technical scheme that the present invention provides is:
A kind of flue gas desulfurization device, including:
Casing, its left lower is provided with air inlet pipe, and right upper portion is provided with escape pipe, and described box house sets
There is dividing plate, be followed successively by the first lower clapboard and the first upper spacer, wherein the first lower clapboard and casing from left to right
Bottom vertical connection is divided into the first filter pocket and the second filter pocket, and the first filter pocket and the end of the second filter pocket
Portion is respectively equipped with the drain branch pipe of connected drainage pipe, and described drain branch pipe is equipped with flow control valve, institute
State the first upper spacer to connect with casing plan vertical and be divided into two upper spaces, described first time every
The top of plate is higher than the bottom of described first upper spacer；
Spraying mechanism, first including the first feed tube, the second feed tube and connection the second feed tube enters
Liquid arm, wherein the first feed tube and the second feed tube connect, and described first feed tube is provided with flow and adjusts
Joint valve, is connected with the first desulfurizing agent inside it, described first feed liquor arm is arranged on the top of casing, is positioned at
Described casing left wall and the first lower clapboard, the first lower clapboard and the first upper spacer and the first upper spacer and case
Between the right wall of body, shower nozzle is equipped with for any one the first feed liquor arm end；
Regenerated reactor, it is cuboid, and the bottom of one side surface is provided with and connects first entering of described discharging tube
Liquid mouth, the side surface relative with the first inlet is provided with liquid outlet, is equipped with second and takes off bottom described regenerated reactor
Sulphur agent；
Circulating pump, its one end connects the liquid outlet of described regenerated reactor, and the other end is by the second feed liquor arm even
Connecing described second feed tube, described second feed liquor arm is provided with flow control valve.
Preferably, described flue gas desulfurization device, described flue gas desulfurization device also includes high pressure induced-draught fan,
It is connected on described escape pipe the position near gas outlet.
Preferably, described flue gas desulfurization device, described box house for any one shower nozzle below
It is equipped with one or more pairs of S-shaped water curtain plate being misplaced up and down, for any one S-shaped water curtain plate, one
End is fixing end, is fixed on described casing or dividing plate, and the other end is free end, described S-shaped water curtain plate
The free end height away from bottom half less than the described fixing end height away from bottom half.
Preferably, described flue gas desulfurization device, it is provided with one or M isolation inside described regenerated reactor
Plate, is divided into two or M+1 stillpot, wherein for any one stillpot in regeneration by regenerated reactor
The side surface in pond is provided with the second inlet for being passed through the second desulfurizing agent, and described division board is provided with excessive
Discharge orifice, is provided with the one side of the first inlet to being provided with the one side of liquid outlet from described regenerated reactor, described isolation
The height of plate overflow discharge orifice reduces successively, and the internal one side near liquid outlet of described regenerated reactor is provided with and prevents from sinking
Shallow lake thing enters the filter course of reservoir, for being equipped with below any one stillpot and precipitating centralized pool even
Logical funnel type drain outlet, is provided with valve below described drain outlet.
Preferably, described flue gas desulfurization device, described flue gas desulfurization device also includes demister, institute
State demister to be connected on described escape pipe, be positioned at the rear portion of described high pressure induced-draught fan.
Preferably, described flue gas desulfurization device, described box house is additionally provided with one or more pairs of second
Dividing plate, it includes the second upper spacer and the second lower clapboard, and its structure and set-up mode are respectively and described first
Upper spacer and the first lower clapboard are consistent, and enter by first for being equipped with between any pair second partition
Liquid arm connects the shower nozzle of the second feed tube.
Preferably, described flue gas desulfurization device, described first desulfurizing agent be concentration be 5%-20%'s
Sodium hydroxide solution, described second desulfurizing agent be concentration be the aqua calcis of 5%-20%.
Beneficial effects of the present invention is as follows:
(1) the multipair dividing plate being misplaced up and down is set in casing, casing is divided into multiple little space, increase
Add the flow path of flue gas, thus extended flue gas and the time of contact of the first desulfurizing agent so that reaction
Fully carry out；
(2) when the flow control valve on the discharging tube of regulation bottom half so that the liquid of bottom half filtrate
When face exceeds the bottom of the first upper spacer and the second upper spacer, by connecting high pressure air draught at escape pipe position
Machine works, and makes gas be passed into the space of next shower nozzle spray inside the filtrate of bottom half, logical
Excess pressure forces flue gas to be entered filtrate, adds contacting of flue gas and desulfurizing agent, improves desulfuration efficiency；
(3) arranging S-shaped water curtain plate at box house, from shower nozzle, the first desulfurizing agent of ejection is at S-shaped water
Under the effect of curtain plate, form water curtain, add the flue gas flow path at box house, too increase cigarette
Gas and the contact surface of the first desulfurizing agent and time of contact；
(4) it is provided with multi stage precipitation groove inside regenerated reactor, enters in the desulfurization thing within regenerated reactor and regenerated reactor
Portion second reactive desulfurizing agent generate be deposited in the multi stage precipitation groove of regenerated reactor in fill under gravity
Fractional precipitation, the partially liq the most relatively cleaned, through filter course, flows into the second feed tube through circulating pump and enters
Spraying mechanism recycles；It is connected to precipitate centralized pool by valve below the most described multi stage precipitation groove,
When needs are cleared up, only need to shut valve, it is not necessary to stop desulfurizer work；
(5) on escape pipe, connect demister, the clean gas after desulfurization is dried process and discharges；
(6) use sodium hydroxide solution spray desulfurization, be not easily blocked the pipeline of spraying mechanism, with sulfuration gas
Precursor reactant is violent, and its sulfide sodium sulfite or sodium hydrogensulfite and the second desulfurizing agent calcium hydroxide reaction are raw
Becoming precipitation and NaOH, wherein sodium hydroxide solution recycles with circulating pump entrance spraying mechanism.
Accompanying drawing explanation
Fig. 1 is the structural representation of flue gas desulfurization device of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art's reference
Specification word can be implemented according to this.
As it is shown in figure 1, the present invention provides a kind of flue gas desulfurization device, including:
Casing 1, its left lower is provided with air inlet pipe 11, and right upper portion is provided with escape pipe 12, described casing
Inside is provided with dividing plate 13, is followed successively by the first lower clapboard 131 and the first upper spacer 132 from left to right, wherein
Bottom first lower clapboard 131 and casing 1, vertical connection is divided into the first filter pocket and the second filter pocket, and
The bottom of the first filter pocket and the second filter pocket is respectively equipped with the drain branch pipe of connected drainage pipe 14, and described discharge opeing is propped up
Flow control valve 141 and flow control valve 142, described first upper spacer 132 and case it is respectively equipped with on pipe
Body 1 plan vertical connects and is divided into two upper spaces, and the top of described first lower clapboard 131 is high
Bottom in described first upper spacer 132；Spraying mechanism 2, including first feed tube the 21, second feed liquor
Pipe 22 and connect the first feed liquor arm 23 of the second feed tube 22, wherein the first feed tube 21 and the
Two feed tubes 22 connect, and described first feed tube 21 is provided with flow control valve 211, is connected with inside it
Concentration is the sodium hydroxide solution of 5%-20%, and described first feed liquor arm 23 is arranged on the top of casing 1,
It is positioned at described casing 1 left wall and the first lower clapboard the 131, first lower clapboard 131 and the first upper spacer 132
And first between upper spacer 132 and the right wall of casing 1, for any one the first feed liquor arm 23 end
It is equipped with shower nozzle 24；
Described casing 1 is internal one or more pairs of to be misplaced up and down for being equipped with below any one shower nozzle 24
S-shaped water curtain plate 15, for any one S-shaped water curtain plate 15, its one end is fixing end, is fixed on described
On casing 1 or dividing plate 13, the other end is free end, and the free end of described S-shaped water curtain plate 15 is away from casing
Height bottom 1 is less than described fixing end height bottom casing 1；
Regenerated reactor 3, it is cuboid, and the bottom of one side surface is provided with and connects the of described discharging tube 14
One inlet, the side surface relative with the first inlet is provided with liquid outlet, is equipped with dense bottom described regenerated reactor
Degree is the aqua calcis of 5%-20%；Described regenerated reactor 3 is internal is provided with one or M division board 31,
Regenerated reactor is divided into two or M+1 stillpot 32, wherein for any one stillpot 32 again
The side surface in raw pond is provided with the second inlet for being passed through the aqua calcis that concentration is 5%-20%
321, described division board 31 is provided with spout hole 311, is provided with the first inlet from described regenerated reactor 3
One side is to being provided with the one side of liquid outlet, and the height of described division board 31 overflow discharge orifice 311 reduces successively, institute
State the internal one side near liquid outlet of regenerated reactor 3 and be provided with the filter course 33 preventing sediment from entering reservoir,
For being equipped with below any one stillpot 32 and precipitating the funnel type drain outlet that centralized pool 34 connects,
Valve 341 it is provided with below described drain outlet.
Circulating pump 4, its one end connects the liquid outlet of described regenerated reactor, and the other end passes through the second feed liquor arm
25 connect described second feed tube 22, and described second feed liquor arm 25 is provided with flow control valve 251；
Demister 6, described demister 6 is connected on described escape pipe 12.
The course of work of the flue gas desulfurization device of the present invention: flow control valve 211 is opened, Flow-rate adjustment
Valve 251 cuts out so that sodium hydroxide solution is propped up from feed liquor through the second feed tube 22 by the first feed tube 21
Pipe 23 sprays from shower nozzle 24, forms NaOH water curtain through S-shaped water curtain plate 15, and from air inlet pipe
The 11 smoke contacts generation desulphurization reactions entering casing 1, desulfurization product enters the first filter bottom casing 1
Groove and the second filter pocket, when the liquid level of the second filter pocket is higher than the first upper spacer 132, open under the second filter pocket
The flow control valve 142 in portion, makes the filtrate in the second filter pocket flow in regenerated reactor 3 by discharging tube, control
Flow control valve 142 processed makes the liquid level bottom less than the first upper spacer 132 of the second filter pocket, same,
Regulation flow control valve 141 make the liquid level of the first filter pocket exceed air inlet pipe 11 and less than being positioned at casing 1
The S-shaped water curtain plate 15 of lower section, the desulfurization product entering regenerated reactor 3 first passes through first order stillpot 32, with
The aqua calcis reaction loaded from the second inlet 321 in advance, forms calcium sulfite or calcium sulfate sinks
Form sediment, under flowing to when first order stillpot 32 liquid at the middle and upper levels exceeds the spout hole 311 on division board 31
One-level stillpot 32, the like, the sodium hydroxide solution that desulfurization thing generates with calcium hydroxide reaction passes through
Filter course 33 enters reservoir, under the effect of circulating pump 4, flows through the second feed tube 25, now beats
Drive flow valve 251, close flow valve 211, make sodium hydroxide solution at spraying mechanism 2, casing 1 and again
Raw pond 3 recycles；
When wherein sulfur dioxide in flue gas gas contacts with sodium hydroxide solution, first it is dissolved in NaOH and inhales
Receive in liquid, be then dissociated into H+And SO3 2-, as follows:
SO2(g)→SO2(aq),
SO2(aq)+H2O(l)→H++HSO3 -→2H++SO3 2-；
Further, H+With OH in solution-Neutralize reaction, generate salt and water, promote SO2Constantly inhaled
Receipts liquid dissolves, and occurs to react as follows:
2NaOH+SO2→Na2SO3+H2O,
Na2SO3+SO2+H2O→2NaHSO3；
Product after desulfurization enters regenerated reactor and reacts generation calcium sulfite precipitation, reaction with aqua calcis
As follows:
Ca(OH)2+Na2SO3→2 NaOH+CaSO3,
Ca(OH)2+2NaHSO3→Na2SO3+CaSO3·1/2H2O+1/2H2O；
Under conditions of having oxygen, ultimately generate calcium sulfate precipitation, react as follows:
Ca(OH)2+Na2SO3+1/2O2+2 H2O→2 NaOH+CaSO4·H2O；
The sodium hydroxide solution that flue gas sprays through shower nozzle 24 between the dividing plate 13 of casing 1 through multipath
Flowing, fully removes sulfur dioxide therein, eventually passes escape pipe 12 and discharge after drying through demister 6；
In regenerated reactor 3, the calcium sulfite in multiple stillpots 32 or calcium sulfate precipitation are from funnel type drain outlet
Enter precipitation centralized pool 34, when needs process the precipitation precipitated in centralized pool 34, valve 341 is closed
Closing, without stopping casing 1, spraying mechanism 2, regenerated reactor 3 and circulating pump 4, desulfurizer is permissible
It is normally carried out.
Described flue gas desulfurization device, described flue gas desulfurization device also includes high pressure induced-draught fan 5, and it connects
Near the position of gas outlet on described escape pipe 12.
Flow control valve 142 bottom regulation casing 1 make the liquid level of the second filtrate receiver higher than first on every
The bottom of plate, flue gas enters the first filtrate receiver from air inlet pipe 11, through S-shaped water curtain plate 15 and first time
Dividing plate 131, under the effect of high pressure induced-draught fan 5, flue gas enters the liquid level bottom of the second filtrate receiver, with
Again there is desulphurization reaction in the second filtrate receiver, through the first upper spacer 132 and second filtrate receiver on right side thereof
Liquid level, the sodium hydroxide solution secondary response again sprayed with the shower nozzle 24 of top, finally from escape pipe 12 row
Going out, compare the situation being not connected with high pressure induced-draught fan 5, flue gas is forced into below the liquid level of the second filtrate receiver,
More fully make sulfur dioxide in flue gas gas react with sodium hydroxide solution, improve desulfurization effect
Rate.
Described flue gas desulfurization device, described casing 1 is internal is additionally provided with one or more pairs of second partition, its
Including the second upper spacer and the second lower clapboard, its structure and set-up mode are respectively and described first upper spacer 132
Consistent with the first lower clapboard 131, and for being equipped with by the first feed liquor between any pair second partition
Arm 23 connects the shower nozzle 24 of the second feed tube 22, increases multipair second partition and shower nozzle 24, extends
Flue gas flow path in casing 1, makes sulfur dioxide in flue gas and NaOH react more abundant,
Improve desulfuration efficiency.
Although embodiment of the present invention are disclosed as above, but it is not restricted to specification and embodiment party
Listed utilization in formula, it can be applied to various applicable the field of the invention completely, for being familiar with ability
For the personnel in territory, be easily achieved other amendment, therefore without departing substantially from claim and etc. homotype
Enclose under limited universal, the invention is not restricted to specific details and shown here as the legend with description.
Claims (2)
1. a flue gas desulfurization device, it is characterised in that including:
Casing, its left lower is provided with air inlet pipe, and right upper portion is provided with escape pipe, and described box house sets
There is dividing plate, be followed successively by the first lower clapboard and the first upper spacer, wherein the first lower clapboard and casing from left to right
Bottom vertical connection is divided into the first filter pocket and the second filter pocket, and the first filter pocket and the end of the second filter pocket
Portion is respectively equipped with the drain branch pipe of connected drainage pipe, and described drain branch pipe is equipped with flow control valve, institute
State the first upper spacer to connect with casing plan vertical and be divided into two upper spaces, described first time every
The top of plate is higher than the bottom of described first upper spacer；
Spraying mechanism, first including the first feed tube, the second feed tube and connection the second feed tube enters
Liquid arm, wherein the first feed tube and the second feed tube connect, and described first feed tube is provided with flow and adjusts
Joint valve, is connected with the first desulfurizing agent inside it, described first feed liquor arm is arranged on the top of casing, is positioned at
Described casing left wall and the first lower clapboard, the first lower clapboard and the first upper spacer and the first upper spacer and case
Between the right wall of body, shower nozzle is equipped with for any one the first feed liquor arm end；
Regenerated reactor, it is cuboid, and the bottom of one side surface is provided with and connects first entering of described discharging tube
Liquid mouth, the side surface relative with the first inlet is provided with liquid outlet, is equipped with second and takes off bottom described regenerated reactor
Sulphur agent；
Circulating pump, its one end connects the liquid outlet of described regenerated reactor, and the other end is by the second feed liquor arm even
Connecing described second feed tube, described second feed liquor arm is provided with flow control valve；
High pressure induced-draught fan, it is connected on described escape pipe the position near gas outlet；
Described box house is for being equipped with one or more pairs of S-shaped being misplaced up and down below any one shower nozzle
Water curtain plate, for any one S-shaped water curtain plate, its one end is fixing end, be fixed on described casing or every
On plate, the other end is free end, and the free end of the described S-shaped water curtain plate height away from bottom half is less than institute
State the fixing end height away from bottom half；
It is provided with one or M division board inside described regenerated reactor, regenerated reactor is divided into two or M+1
Individual stillpot, is wherein provided with for being passed through second for any one stillpot on the side surface of regenerated reactor
Second inlet of desulfurizing agent, described division board is provided with spout hole, is provided with first from described regenerated reactor and enters
The one side of liquid mouth is to being provided with the one side of liquid outlet, and the height of described division board overflow discharge orifice reduces successively, institute
State the internal one side near liquid outlet of regenerated reactor and be provided with the filter course preventing sediment from entering reservoir, for
It is equipped with below any one stillpot and precipitates the funnel type drain outlet that centralized pool connects, described blowdown
Valve it is provided with below passage；
Described flue gas desulfurization device also includes that demister, described demister are connected on described escape pipe, position
Rear portion in described high pressure induced-draught fan；
Described box house is additionally provided with one or more pairs of second partition, and it includes the second upper spacer and second time
Dividing plate, its structure and set-up mode respectively and described first upper spacer and the first lower clapboard consistent, and for
The shower nozzle being connected the second feed tube by the first feed liquor arm it is equipped with between any pair second partition.
2. flue gas desulfurization device as claimed in claim 1, it is characterised in that described first desulfurizing agent is
Concentration is the sodium hydroxide solution of 5%-20%, described second desulfurizing agent be concentration be the hydroxide of 5%-20%
Calcium solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696634.5A CN104437056B (en) | 2014-11-26 | 2014-11-26 | A kind of flue gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696634.5A CN104437056B (en) | 2014-11-26 | 2014-11-26 | A kind of flue gas desulfurization device |
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| CN104437056A CN104437056A (en) | 2015-03-25 |
| CN104437056B true CN104437056B (en) | 2016-09-07 |
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| CN201410696634.5A Expired - Fee Related CN104437056B (en) | 2014-11-26 | 2014-11-26 | A kind of flue gas desulfurization device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890505A (en) * | 2017-04-14 | 2017-06-27 | 哈尔滨理工大学 | A kind of double alkali method desulfurizing system filters intermediate processing |
| CN107081029A (en) * | 2017-05-11 | 2017-08-22 | 张涵 | A kind of boiler intelligent deduster |
| CN109550379A (en) * | 2017-09-26 | 2019-04-02 | 萍乡市普天高科实业有限公司 | A kind of equipment and its technique for low-temp desulfurization denitration in flue gas |
| CN108744885A (en) * | 2018-05-24 | 2018-11-06 | 贵州环科环境工程有限公司 | Dedusting and desulfurizing tower |
| CN109453622A (en) * | 2018-11-30 | 2019-03-12 | 湖南嘉力亚新材料有限公司 | A kind of roasting spray equipment with filtering function |
| CN112591769A (en) * | 2020-12-16 | 2021-04-02 | 湖南福千府生物科技有限公司 | Device for preparing sodium sulfite solution |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948608A (en) * | 1972-03-24 | 1976-04-06 | Weir Jr Alexander | Apparatus for treating stack gases |
| CN101053739A (en) * | 2007-02-15 | 2007-10-17 | 李滔 | Double alkali method flue gas desulfurization technology |
| CN201088905Y (en) * | 2007-09-28 | 2008-07-23 | 李宗栓 | Dedusting desulfurization unit |
| CN203577606U (en) * | 2013-11-21 | 2014-05-07 | 江苏先科机电设备有限公司 | Integrated efficient waste gas purifying system |
| CN203935744U (en) * | 2014-06-06 | 2014-11-12 | 山西玉竹活性石灰制造有限公司 | A kind of column plate type spray deduster |
| CN204338002U (en) * | 2014-11-26 | 2015-05-20 | 广西南宁华国环境科技有限公司 | A kind of flue gas desulfur device |
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