CN108514806A - A kind of flue gas desulfurization device and method - Google Patents
A kind of flue gas desulfurization device and method Download PDFInfo
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- CN108514806A CN108514806A CN201810277093.0A CN201810277093A CN108514806A CN 108514806 A CN108514806 A CN 108514806A CN 201810277093 A CN201810277093 A CN 201810277093A CN 108514806 A CN108514806 A CN 108514806A
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8609—Sulfur oxides
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D2251/10—Oxidants
- B01D2251/102—Oxygen
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2258/0283—Flue gases
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Abstract
The invention discloses a kind of flue gas desulfurization device and methods, belong to fume treatment technical field, which includes blending bin, adsorption box, absorption tower and desulfuration solution bucket；Blending bin is built-in with catalyst, and adsorption box is built-in with activated carbon, and desulfuration solution bucket is built-in with desulfuration solution；Initial flue gas and oxygen sequence enter absorption tower after blending bin and adsorption box, and desulfuration solution is delivered to by desulfuration solution bucket in absorption tower；Spray equipment is equipped in absorption tower；Absorb the bottom of the tower is equipped with cooling device；The fume desulphurization method includes the following steps：It conveys desulfuration solution, generate sulfur trioxide, first grade desulfurizing, two-grade desulfurizing, discharge；The present invention solves the problems, such as that traditional fume desulphurization method desulfuration efficiency is low.
Description
Technical field
The invention belongs to fume treatment technical fields, and in particular to a kind of flue gas desulfurization device and method.
Background technology
With the continuous development of industry, various fuel used in industrial production are also being continuously increased, and especially fossil fires
Expect the main source at nowadays air pollution with the quantity combusted of biomass fuel.For example, the dioxy generated after fuel combustion
Change in sulphur emissions to air, oxidation reaction easily occurs with oxygen, to be converted to sulfur trioxide rapidly；After sulfur trioxide cooling
Acid mist is formed, acid rain is formed after being combined with steam, to the very harmful of environment.
Traditional fume desulphurization method has：Lime stone, lime-gypsum doctor treatment and Dual alkali etc.；But these desulfurization sides
The defect that method has desulfuration efficiency low；Therefore, it is necessary to provide a kind of flue gas desulfurization device and method, solve the above problems.
Invention content
The goal of the invention of the present invention is, a kind of flue gas desulfurization device and method is provided, to solve traditional flue gas desulfurization
The low problem of method desulfuration efficiency.
In order to achieve the above object, technical scheme is as follows：
A kind of flue gas desulfurization device, including：
Blending bin has the first cavity, and is built-in with catalyst in first cavity；The blending bin is equipped with flue gas
Inlet pipe and oxygen inlet pipe；The flue gas inlet pipe is connected to first cavity with oxygen inlet pipe, for for initial flue gas and oxygen
Respectively enter first cavity；
Adsorption box has the second cavity, and is built-in with activated carbon in second cavity；Second cavity is connected to institute
State the first cavity；
Absorption tower comprising tower body, spray equipment, cooling device, circulating pump and smoke exhaust pipe；The tower body has third
Cavity, the third cavity are connected to second cavity by conveying tracheae；The spray equipment is set on the tower body, and position
In the top of the third cavity；The cooling device is set to the bottom of the tower body；The circulating pump passes through the first pipette
Lower part and the spray equipment of the third cavity are respectively communicated with the first liquid pushing tube；The smoke exhaust pipe is set to the top of the tower body
Portion, and it is connected to the third cavity；And
Desulfuration solution bucket comprising staving and delivery pump；The staving has the 4th cavity for housing desulfuration solution；
The delivery pump is respectively communicated with the lower part of the 4th cavity and the third cavity by the second pipette and the second liquid pushing tube.
Preferably, the catalyst is vanadic anhydride.
Preferably, the absorption tower further includes the first agitating device being set on the tower body；First agitating device
It include the first mixing part in the third cavity.In this way, fully being connect with the desulfuration solution convenient for sulfur trioxide
It touches, to improve desulfuration efficiency.
Preferably, the absorption tower further includes the mist arrester being set on the tower body；The mist arrester is set to the third
In cavity, and between the smoke exhaust pipe and the spray equipment.In this way, convenient for removing third cavity top
A small amount of acid mist, further increases desulfuration efficiency.
Preferably, the conveying tracheae is equipped with flowmeter and solenoid valve, for controlling the gas into the third cavity
Body flow.In this way, entering the gas flow of the third cavity convenient for regulation and control, to obtain best sulfur limitation effect.
Preferably, the conveying tracheae is connected to the lower part of the third cavity.In this way, so that described in flue gas entrance
When third cavity, sulfur trioxide is directly contacted with desulfuration solution and is absorbed, and further increases the efficiency of desulfurization.
Preferably, the desulfuration solution is lime stone solution.
Preferably, the desulfuration solution bucket further includes the grinding device being set on the staving；The grinding device has
Inlet port and outlet port；The feed inlet is located at the top of the discharge port, and the discharge port is located at the upper of the 4th cavity
Side, and be connected to the 4th cavity.In this way, convenient for crushing raw limestone, it is convenient that the lime stone is made
Solution.
Preferably, the desulfuration solution bucket further includes the second agitating device being set on the staving, second stirring
Device includes the second mixing part being set in the 4th cavity.In this way, it is sufficiently stirred mixing with water convenient for lime stone, from
And the lime stone solution is made.
A kind of fume desulphurization method using the flue gas desulfurization device includes the following steps：
(1) desulfuration solution is conveyed：Start the delivery pump, by the desulfurization in the 4th cavity of the desulfuration solution bucket
Solution is delivered in the third cavity on the absorption tower；
(2) sulfur trioxide is generated：Initial flue gas and oxygen are supplied to the blending bin, the dioxy in initial flue gas simultaneously
Change sulphur and oxygen under the effect of the catalyst, generates sulfur trioxide, have neither part nor lot in the part of reaction in initial flue gas, have neither part nor lot in reaction
Oxygen and sulfur trioxide mixed flue gas is collectively formed；
(3) first grade desulfurizing：The mixed flue gas is supplied to the adsorption box, the activated carbon in the adsorption box will be described
Part sulfur trioxide in mixed flue gas is adsorbed, and first grade desulfurizing flue gas is obtained；
(4) two-grade desulfurizing：The first grade desulfurizing flue gas is supplied to the third cavity on the absorption tower, and is followed described in startup
Ring pump, the spray equipment and the heat sink, carry out two-grade desulfurizing, to obtain two-grade desulfurizing flue gas；
(5) it discharges：The two-grade desulfurizing flue gas is emitted into chimney through the smoke exhaust pipe.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. initial flue gas and oxygen are sufficiently mixed by the present invention first, and generate sulfur trioxide under the effect of the catalyst,
Due to being in a liquid state under sulfur trioxide room temperature, it is easy to collect；The present invention is handled flue gas by two-step desulfurization, first grade desulfurizing hair
Life is in adsorption box, and adsorption box is built-in with activated carbon, and adsorbable collection part sulfur trioxide can also be collected in mixed flue gas
Part harmful substance, reduces the usage amount of desulfuration solution, and improves desulfuration efficiency；Two-grade desulfurizing is happened in absorption tower,
When first grade desulfurizing flue gas enters absorption tower, most of sulfur trioxide is contacted with desulfuration solution, and is absorbed, fraction sulfur trioxide
Rise the desulfuration solution sprayed by spray equipment with flue gas to absorb；Through the processed flue gas of two-grade desulfurizing, sulfur content is very low,
Discharge standard is fully met, solves the problems, such as that traditional fume desulphurization method desulfuration efficiency is low；The relatively traditional desulfurization dress of the present invention
It sets and sulfur method, it is possible to reduce the usage amount of desulfuration solution, simultaneously, additionally it is possible to reduce the energy consumption of desulfurization process generation.
2. the present invention is equipped with cooling device in the bottom of tower body, the efficiency of desulfurization can be improved；Due to sulfur trioxide and desulfurization
During solution reaction, a large amount of heat is will produce, influences the absorption efficiency of sulfur trioxide, to reduce desulfuration efficiency；This hair
Bright cooling device can reduce the temperature of the desulfuration solution in tower body, and desulfuration solution is avoided constantly to heat up the influence of generation.
3. the present invention is equipped with flowmeter and solenoid valve on conveying tracheae between absorption tower and adsorption box so that enter the
The gas flow of three cavitys is adjustable, in this way, in sweetening process, gas flow can be controlled according to actual needs, to improve
Desulfuration efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Main element symbol description is as follows in figure：
In attached drawing, 1- blending bins, 2- flue gases inlet pipe, 3- oxygen inlet pipe, 4- adsorption boxes, the absorption towers 5-, 6- conveyings tracheae, 7-
Flowmeter, 8- solenoid valves, 9- spray equipments, 10- circulating pumps, the first pipette of 11-, the first liquid pushing tubes of 12-, 13- cooling devices,
14- smoke exhaust pipes, the first agitating devices of 15-, 16- mist arresters, 17- desulfuration solutions bucket, 18- delivery pumps, the second pipette of 19-, 20-
Second liquid pushing tube, 21- grinding devices, the second agitating devices of 22-.
Specific implementation mode
The specific implementation of invention is further illustrated below in conjunction with attached drawing.
As shown in Figure 1, a kind of flue gas desulfurization device includes blending bin 1, adsorption box 4, absorption tower 5 and desulfuration solution bucket
17。
Blending bin 1 has the first cavity, and is built-in with catalyst in the first cavity；In the present embodiment, catalyst is five oxygen
Change two vanadium.Blending bin 1 is equipped with flue gas inlet pipe 2 and oxygen inlet pipe 3, and flue gas inlet pipe 2 is connected to the first cavity with oxygen inlet pipe 3, uses
In respectively enteing the first cavity for initial flue gas and oxygen.Initial flue gas and oxygen can generate three oxygen under the effect of the catalyst
Change sulphur.Initial flue gas enters before blending bin 1, can carry out cooling treatment technique so that the temperature of initial flue gas is close to room temperature.
Adsorption box 4 has the second cavity, and is built-in with activated carbon in the second cavity, and the second cavity is connected to the first cavity.
Absorption tower 5 includes tower body, spray equipment 9, cooling device 13, circulating pump 10, smoke exhaust pipe 14, the first agitating device 15
And mist arrester 16.There is tower body third cavity, third cavity to be connected to the second cavity by conveying tracheae 6；It is defeated in the present embodiment
Snorkel 6 is connected to the lower part of third cavity so that when flue gas enters third cavity, sulfur trioxide is directly contacted with desulfuration solution
And absorbed, further increase the efficiency of desulfurization.It conveys tracheae 6 and is equipped with flowmeter 7 and solenoid valve 8, enter for controlling
The gas flow of three cavitys, convenient for regulation and control into the gas flow of third cavity, to obtain best sulfur limitation effect.Spray dress
It sets 9 to be set on tower body, and positioned at the top of third cavity.Cooling device 13 is set to the bottom of tower body, for reducing third inner cavity
The temperature of interior desulfuration solution, to improve desulfuration efficiency.Circulating pump 10 is divided by the first pipette 11 and the first liquid pushing tube 12
Not Lian Tong third cavity lower part and spray equipment 9.Smoke exhaust pipe 14 is set to the top of tower body, and is connected to third cavity.First stirs
Device 15 is mixed on tower body, the first agitating device 15 includes the first mixing part being set in third cavity, is convenient for sulfur trioxide
It is come into full contact with desulfuration solution, to improve desulfuration efficiency.Mist arrester 16 is set on tower body, and specifically, mist arrester 16 is set to the
In three cavitys, and between smoke exhaust pipe 14 and spray equipment 9, convenient for removing a small amount of acid mist on third cavity top, further
Improve desulfuration efficiency
Desulfuration solution bucket 17 includes staving, delivery pump 18, grinding device 21 and the second agitating device 22, and staving, which has, to be used
In the 4th cavity of accommodating desulfuration solution.In the present embodiment, desulfuration solution is lime stone solution.Delivery pump 18 passes through the second imbibition
Pipe 19 and the second liquid pushing tube 20 are respectively communicated with lower part and the third cavity of the 4th cavity.Grinding device 21 is set on staving, is crushed
There are device 21 inlet port and outlet port, feed inlet to be located at the top of discharge port, and discharge port is located at the top of the 4th cavity, and with
4th cavity is connected to, convenient for crushing raw limestone, to convenient obtained lime stone solution.Second agitating device 22 is set
In on staving, the second agitating device 22 includes the second mixing part being set in the 4th cavity, is sufficiently stirred convenient for lime stone and water
Mixing, to which lime stone solution be made.
A kind of fume desulphurization method using above-mentioned flue gas desulfurization device includes the following steps：
(1) desulfuration solution is conveyed：Start delivery pump 18, the desulfuration solution in the 4th cavity of desulfuration solution bucket 17 is conveyed
To the third cavity on absorption tower 5.
(2) sulfur trioxide is generated：Initial flue gas and oxygen are supplied to blending bin 1, the titanium dioxide in initial flue gas simultaneously
Sulphur and oxygen under the effect of the catalyst, generate sulfur trioxide, have neither part nor lot in the part of reaction in initial flue gas, have neither part nor lot in reaction
Mixed flue gas is collectively formed in oxygen and sulfur trioxide.
(3) first grade desulfurizing：Mixed flue gas is supplied to adsorption box 4, the activated carbon in adsorption box 4 is by the portion in mixed flue gas
Divide sulfur trioxide to be adsorbed, obtains first grade desulfurizing flue gas.
(4) two-grade desulfurizing：First grade desulfurizing flue gas is supplied to the third cavity on absorption tower 5, and starts circulating pump 10, spray
Device 9 and heat sink carry out two-grade desulfurizing, to obtain two-grade desulfurizing flue gas.
(5) it discharges：Two-grade desulfurizing flue gas is emitted into chimney through smoke exhaust pipe 14.
The present invention is handled flue gas by two-step desulfurization, and first grade desulfurizing is happened in adsorption box 4, and two-grade desulfurizing occurs
In absorption tower 5；Through two-step desulfurization treated flue gas, sulfur content is very low, fully meets discharge standard, solves tradition
The low problem of fume desulphurization method desulfuration efficiency；The relatively traditional desulfurizer of the present invention and sulfur method, it is possible to reduce desulfurization is molten
The usage amount of liquid, simultaneously, additionally it is possible to reduce the energy consumption of desulfurization process generation.Cooling device 13 that the present invention is arranged, 7 and of flowmeter
Solenoid valve 8 can further increase the efficiency of desulfurization, have good practicability, be worthy to be popularized.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the claims of the present invention.
Claims (10)
1. a kind of flue gas desulfurization device, which is characterized in that including：
Blending bin has the first cavity, and is built-in with catalyst in first cavity；The blending bin is equipped with flue gas inlet pipe
With oxygen inlet pipe；The flue gas inlet pipe is connected to first cavity with oxygen inlet pipe, for distinguishing for initial flue gas and oxygen
Into first cavity；
Adsorption box has the second cavity, and is built-in with activated carbon in second cavity；Second cavity connection described the
One cavity；
Absorption tower comprising tower body, spray equipment, cooling device, circulating pump and smoke exhaust pipe；The tower body has third chamber
Body, the third cavity are connected to second cavity by conveying tracheae；The spray equipment is set on the tower body, and is located at
The top of the third cavity；The cooling device is set to the bottom of the tower body；The circulating pump by the first pipette and
First liquid pushing tube is respectively communicated with lower part and the spray equipment of the third cavity；The smoke exhaust pipe is set to the top of the tower body,
And it is connected to the third cavity；And
Desulfuration solution bucket comprising staving and delivery pump；The staving has the 4th cavity for housing desulfuration solution；It is described
Delivery pump is respectively communicated with the lower part of the 4th cavity and the third cavity by the second pipette and the second liquid pushing tube.
2. a kind of flue gas desulfurization device according to claim 1, which is characterized in that the catalyst is vanadic anhydride.
3. a kind of flue gas desulfurization device according to claim 1, which is characterized in that the absorption tower further includes set on described
The first agitating device on tower body；First agitating device includes the first mixing part being set in the third cavity.
4. a kind of flue gas desulfurization device according to claim 3, which is characterized in that the absorption tower further includes set on described
Mist arrester on tower body；The mist arrester is set in the third cavity, and positioned at the smoke exhaust pipe and the spray equipment it
Between.
5. a kind of flue gas desulfurization device according to claim 1, which is characterized in that the conveying tracheae is equipped with flowmeter
And solenoid valve, for controlling the gas flow into the third cavity.
6. a kind of flue gas desulfurization device according to claim 5, which is characterized in that the conveying tracheae and the third chamber
The lower part of body is connected to.
7. a kind of flue gas desulfurization device according to claim 1, which is characterized in that the desulfuration solution is that lime stone is molten
Liquid.
8. a kind of flue gas desulfurization device according to claim 7, which is characterized in that the desulfuration solution bucket further includes being set to
Grinding device on the staving；The grinding device has inlet port and outlet port；The feed inlet is located at the discharge port
Top, the discharge port is located at the top of the 4th cavity, and is connected to the 4th cavity.
9. a kind of flue gas desulfurization device according to claim 8, which is characterized in that the desulfuration solution bucket further includes being set to
The second agitating device on the staving, second agitating device include the second mixing part being set in the 4th cavity.
10. a kind of fume desulphurization method using the flue gas desulfurization device as described in claim 1-9 is arbitrary, which is characterized in that
Include the following steps：
(1) desulfuration solution is conveyed：Start the delivery pump, by the desulfuration solution in the 4th cavity of the desulfuration solution bucket
It is delivered in the third cavity on the absorption tower；
(2) sulfur trioxide is generated：Initial flue gas and oxygen are supplied to the blending bin, the sulfur dioxide in initial flue gas simultaneously
Under the effect of the catalyst with oxygen, sulfur trioxide is generated, the part of reaction is had neither part nor lot in initial flue gas, has neither part nor lot in the oxygen of reaction
Mixed flue gas is collectively formed in gas and sulfur trioxide；
(3) first grade desulfurizing：The mixed flue gas is supplied to the adsorption box, the activated carbon in the adsorption box is by the mixing
Part sulfur trioxide in flue gas is adsorbed, and first grade desulfurizing flue gas is obtained；
(4) two-grade desulfurizing：The first grade desulfurizing flue gas is supplied to the third cavity on the absorption tower, and starts the cycle
Pump, the spray equipment and the heat sink carry out two-grade desulfurizing, to obtain two-grade desulfurizing flue gas；
(5) it discharges：The two-grade desulfurizing flue gas is emitted into chimney through the smoke exhaust pipe.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068481A (en) * | 2020-02-15 | 2020-04-28 | 丁昌林 | Denitration and desulfurization device for industrial boiler |
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Application publication date: 20180911 |