CN105457473A - High-efficiency flue gas processing method - Google Patents

High-efficiency flue gas processing method Download PDF

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Publication number
CN105457473A
CN105457473A CN201510827036.1A CN201510827036A CN105457473A CN 105457473 A CN105457473 A CN 105457473A CN 201510827036 A CN201510827036 A CN 201510827036A CN 105457473 A CN105457473 A CN 105457473A
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CN
China
Prior art keywords
flue gas
flue
oxygen
gas processing
adlerika
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510827036.1A
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Chinese (zh)
Inventor
崔素清
梁杰锋
张亮
吴巧丽
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Guangxi Kuonengba Energy Technology Development Co Ltd
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Guangxi Kuonengba Energy Technology Development Co Ltd
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Priority to CN201510827036.1A priority Critical patent/CN105457473A/en
Publication of CN105457473A publication Critical patent/CN105457473A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/60Simultaneously removing sulfur oxides and nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/10Oxidants
    • B01D2251/106Peroxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/30Alkali metal compounds
    • B01D2251/304Alkali metal compounds of sodium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/60Inorganic bases or salts
    • B01D2251/604Hydroxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The invention discloses a high-efficiency flue gas processing method including the following steps: turning on a switch of an ultraviolet lamp tube (2), making the ultraviolet lamp tube (2) in a work state, allowing flue gas with the temperature of 50-70 DEG C to pass through a flue gas pipeline (1), spraying an atomized hydrogen peroxide solution through a hydrogen peroxide inlet (3), introducing oxygen through an oxygen inlet (4) and spraying an atomized magnesium sulfate solution through a magnesium sulfate solution inlet (5) at the same time, and carrying out mixed reaction with the flue gas. The invention also discloses a device for the high-efficiency flue gas processing method; the ultraviolet lamp tube (2) is arranged in the flue gas pipeline (1), and the hydrogen peroxide inlet (3), the oxygen inlet (4) and the magnesium sulfate solution inlet (5) are all formed in the pipe wall of the flue gas pipeline (1) close to a flue gas inlet. The high-efficiency flue gas processing method can be used for simultaneously desulfurization and denitrification, and is simple to operate and high in efficiency.

Description

A kind of high effective flue gas processing method
Technical field
The invention belongs to coal-fired flue-gas process field, be specifically related to a kind of high effective flue gas processing method.
Background technology
Rich coal resources in China is one of main energy source, but along with the use of coal, environmental problem highlights, and the burning of coal outwards discharges flue gas, containing a large amount of SOx, SO in flue gas 2, N 2the dusty gas such as O.According to statistics in atmosphere pollution SOx 90%, CO 71%, CO 285%, 70% and the flue dust of NOx 70% all from the direct burning of raw coal, therefore coal-fired flue-gas is the main cause forming China's atmosphere pollution.For improving Area Ambient Air Quality further, strengthening coal-fired steam boiler pollution control, being badly in need of finding a kind of flue gas desulfurization and denitration method efficiently.And in prior art, majority is all the desulfurization paying attention to flue gas, desulfurization can not be carried out out of stock simultaneously, and complex operation.
NO xcan cause photochemical reaction under the effect of sunlight, form photochemical fog, thus cause serious atmosphere pollution, therefore denitrating flue gas is same with desulfurization can not be ignored.Denitrating flue gas, refers to the NOx reduction having generated, thus removes the NOx in flue gas, can be divided into wet denitration and Dry denitration by Processing tecchnics.Mainly comprise: oxidative absorption method, SNCR method, absorption method, gas ions activation method etc.In oxidative absorption method, difficulty NO being converted to NOx is comparatively large, so the selection of this class methods oxidant and preparation are the cores of research.The more oxidant of current research has HClO 3, NaClO 2, O 3, H 2o 2and KMnO 4deng.Due to the nontoxic and non-secondary pollution of hydrogen peroxide, more to its research.But in prior art, utilize the technology of hydrogen peroxide treatment flue gas also to there is efficiency not high, the problems such as complicated operation.
Summary of the invention
For prior art Problems existing, the invention provides a kind of high effective flue gas processing method efficiently, can simultaneous SO_2 and NO removal.
Technical scheme of the present invention is as follows:
A kind of high effective flue gas processing method, comprise the following steps: open quartz burner switch, make quartz burner in running order, be that the flue gas of 50-70 DEG C passes through flue by temperature, the hydrogenperoxide steam generator simultaneously spraying into atomization respectively by hydrogen peroxide entrance, the Adlerika being passed into oxygen by oxygen intake, sprayed into atomization by Adlerika entrance, with flue gas hybrid reaction.
The ultraviolet wavelength of described quartz burner is 300-350nm.
Described hydrogenperoxide steam generator concentration is 15-20ppm.
The purity of described oxygen is more than 99%, as: medical oxygen etc.Controlling the concentration of oxygen in flue is 0.2-0.5mol/L.
Described Adlerika concentration is 5-10ppm.
For a device for the above high effective flue gas processing method, quartz burner is set in flue, on the tube wall of the flue near smoke inlet, hydrogen peroxide entrance, oxygen intake, Adlerika entrance are set respectively.
The quartz burner arranged in described flue arranges many at flue pipe wall diverse location as required, in flue, preferably arranges 4 quartz burners, lay respectively at the top of flue inner pipe wall, below, left, right.
During work, the flue gas of discharge is after flue gas cool-down device is cooled to 50-70 DEG C, in the irradiation of the quartz burner arranged in flue, hydrogenperoxide steam generator, Adlerika are sprayed in pipeline by atomizer and mixes with flue gas, pass into the concentration that appropriate oxygen regulates oxygen simultaneously.Under the effect of Strong oxdiative, the NO in flue gas is converted into NOx, such as NO 2deng, and then again by NOx and H 2o reaction generates NO 3-; In addition, under the effect of Strong oxdiative, by SO 2be oxidized to sulfuric acid, its chemical equation is: H 2o 2+ SO 2=H 2sO 4.During recovery, add sodium hydroxide solution, NO 3-and SO 4 2-react with NaOH, generation sodium sulphate and sodium carbonate reclaim, and carry out desulfurization out of stock to flue gas simultaneously.
Beneficial effect of the present invention is:
1. high effective flue gas processing method of the present invention, energy simultaneous SO_2 and NO removal, by adding oxygen and controlling applicable concentration, add metal ion and play catalytic action, substantially increase the out of stock efficiency of desulfurization, desulfurization degree more than 90%, denitration rate more than 95%, removes smoke to the pollution of air;
2. high effective flue gas processing method of the present invention, generates the product such as sodium sulphate and sodium carbonate after process, can recycle;
3. high effective flue gas processing method of the present invention, operating procedure is not loaded down with trivial details, and cost is low, easily applies.
Accompanying drawing explanation
Fig. 1 is flue structural representation.
Fig. 2 is flue schematic cross-section.
In figure: 1. flue, 2. quartz burner, 3. hydrogen peroxide entrance, 4. oxygen intake, 5. Adlerika entrance
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, but do not limit the scope of the invention and range of application:
Embodiment 1
A kind of high effective flue gas processing method, comprise the following steps: open quartz burner (2) switch, make quartz burner (2) in running order, be that the flue gas of 70 DEG C is by flue (1) by temperature, the hydrogenperoxide steam generator simultaneously spraying into atomization respectively by hydrogen peroxide entrance (3), the Adlerika being passed into oxygen by oxygen intake (4), sprayed into atomization by Adlerika entrance (5), with flue gas hybrid reaction.
The ultraviolet wavelength of described quartz burner (2) is 300nm.
Described hydrogenperoxide steam generator concentration is 20ppm.
The purity of described oxygen is 99.5%, and controlling the concentration of oxygen in flue (1) is 0.2mol/L.
Described Adlerika concentration is 10ppm.
Device for above-mentioned high effective flue gas processing method: quartz burner (2) is set in flue (1), on the tube wall of the flue (1) near smoke inlet, hydrogen peroxide entrance (3), oxygen intake (4), Adlerika entrance (5) are set respectively.
4 quartz burners (2) are set in described flue (1), lay respectively at the top of flue (1) inner pipe wall, below, left, right.
After measured, the desulfurization degree of the present embodiment is 92.12%, and denitration rate is 95.43%.
Embodiment 2
A kind of high effective flue gas processing method, comprise the following steps: open quartz burner (2) switch, make quartz burner (2) in running order, be that the flue gas of 50 DEG C is by flue (1) by temperature, the hydrogenperoxide steam generator simultaneously spraying into atomization respectively by hydrogen peroxide entrance (3), the Adlerika being passed into oxygen by oxygen intake (4), sprayed into atomization by Adlerika entrance (5), with flue gas hybrid reaction.
The ultraviolet wavelength of described quartz burner (2) is 350nm.
Described hydrogenperoxide steam generator concentration is 15ppm.
Described oxygen is purity oxygen, and controlling the concentration of oxygen in flue (1) is 0.5mol/L.
Described Adlerika concentration is 5ppm.
Device for above-mentioned high effective flue gas processing method: quartz burner (2) is set in flue (1), on the tube wall of the flue (1) near smoke inlet, hydrogen peroxide entrance (3), oxygen intake (4), Adlerika entrance (5) are set respectively.
4 quartz burners (2) are set in described flue (1), lay respectively at the top of flue (1) inner pipe wall, below, left, right.
After measured, the desulfurization degree of the present embodiment is 92.78%, and denitration rate is 96.28%.
Embodiment 3
A kind of high effective flue gas processing method, comprise the following steps: open quartz burner (2) switch, make quartz burner (2) in running order, be that the flue gas of 55 DEG C is by flue (1) by temperature, the hydrogenperoxide steam generator simultaneously spraying into atomization respectively by hydrogen peroxide entrance (3), the Adlerika being passed into oxygen by oxygen intake (4), sprayed into atomization by Adlerika entrance (5), with flue gas hybrid reaction.
The ultraviolet wavelength of described quartz burner (2) is 320nm.
Described hydrogenperoxide steam generator concentration is 16ppm.
The purity of described oxygen is 99.8%, and controlling the concentration of oxygen in flue (1) is 0.3mol/L.
Described Adlerika concentration is 6ppm.
Device for above-mentioned high effective flue gas processing method: quartz burner (2) is set in flue (1), on the tube wall of the flue (1) near smoke inlet, hydrogen peroxide entrance (3), oxygen intake (4), Adlerika entrance (5) are set respectively.
4 quartz burners (2) are set in described flue (1), lay respectively at the top of flue (1) inner pipe wall, below, left, right.
After measured, the desulfurization degree of the present embodiment is 94.54%, and denitration rate is 97.43%.
Embodiment 4
A kind of high effective flue gas processing method, comprise the following steps: open quartz burner (2) switch, make quartz burner (2) in running order, be that the flue gas of 60 DEG C is by flue (1) by temperature, the hydrogenperoxide steam generator simultaneously spraying into atomization respectively by hydrogen peroxide entrance (3), the Adlerika being passed into oxygen by oxygen intake (4), sprayed into atomization by Adlerika entrance (5), with flue gas hybrid reaction.
The ultraviolet wavelength of described quartz burner (2) is 340nm.
Described hydrogenperoxide steam generator concentration is 19ppm.
The purity of described oxygen is 99.5%, and controlling the concentration of oxygen in flue (1) is 0.4mol/L.
Described Adlerika concentration is 8ppm.
Device for above-mentioned high effective flue gas processing method: quartz burner (2) is set in flue (1), on the tube wall of the flue (1) near smoke inlet, hydrogen peroxide entrance (3), oxygen intake (4), Adlerika entrance (5) are set respectively.
4 quartz burners (2) are set in described flue (1), lay respectively at the top of flue (1) inner pipe wall, below, left, right.
After measured, the desulfurization degree of the present embodiment is 95.05%, and denitration rate is 97.18%.

Claims (7)

1. a high effective flue gas processing method, it is characterized in that, comprise the following steps: open quartz burner (2) switch, make quartz burner (2) in running order, be that the flue gas of 50-70 DEG C is by flue (1) by temperature, the hydrogenperoxide steam generator simultaneously spraying into atomization respectively by hydrogen peroxide entrance (3), the Adlerika being passed into oxygen by oxygen intake (4), sprayed into atomization by Adlerika entrance (5), with flue gas hybrid reaction.
2. high effective flue gas processing method according to claim 1, is characterized in that: the ultraviolet wavelength of described quartz burner (2) is 300-350nm.
3. high effective flue gas processing method according to claim 1, is characterized in that: described hydrogenperoxide steam generator concentration is 15-20ppm.
4. high effective flue gas processing method according to claim 1, is characterized in that: the purity of described oxygen is more than 99%, and controlling the concentration of oxygen in flue (1) is 0.2-0.5mol/L.
5. high effective flue gas processing method according to claim 1, is characterized in that: described Adlerika concentration is 5-10ppm.
6. the device for high effective flue gas processing method described in claim 1, it is characterized in that: quartz burner (2) is set in flue (1), on the tube wall of the flue (1) near smoke inlet, hydrogen peroxide entrance (3), oxygen intake (4), Adlerika entrance (5) are set respectively.
7. the device of high effective flue gas processing method according to claim 6, it is characterized in that: 4 quartz burners (2) are set in described flue (1), lay respectively at the top of flue (1) inner pipe wall, below, left, right.
CN201510827036.1A 2015-11-24 2015-11-24 High-efficiency flue gas processing method Pending CN105457473A (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN105344216A (en) * 2015-11-24 2016-02-24 广西阔能霸能源科技开发有限责任公司 Treating method for coal-fired flue gas
CN105435633A (en) * 2015-11-24 2016-03-30 广西阔能霸能源科技开发有限责任公司 Coal-fired flue gas treatment technology
CN105435604A (en) * 2015-11-24 2016-03-30 广西阔能霸能源科技开发有限责任公司 Boiler flue gas treatment method
CN105457460A (en) * 2015-11-24 2016-04-06 广西阔能霸能源科技开发有限责任公司 High-efficiency flue gas processing process and device
CN105477986A (en) * 2015-11-24 2016-04-13 广西阔能霸能源科技开发有限责任公司 Flue gas treatment technology and apparatus thereof
CN105498489A (en) * 2015-11-24 2016-04-20 广西阔能霸能源科技开发有限责任公司 A boiler flue gas treatment process and a device
CN105498488A (en) * 2015-11-24 2016-04-20 广西阔能霸能源科技开发有限责任公司 A flue gas treatment method

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Publication number Priority date Publication date Assignee Title
CN105344216A (en) * 2015-11-24 2016-02-24 广西阔能霸能源科技开发有限责任公司 Treating method for coal-fired flue gas
CN105435633A (en) * 2015-11-24 2016-03-30 广西阔能霸能源科技开发有限责任公司 Coal-fired flue gas treatment technology
CN105435604A (en) * 2015-11-24 2016-03-30 广西阔能霸能源科技开发有限责任公司 Boiler flue gas treatment method
CN105457460A (en) * 2015-11-24 2016-04-06 广西阔能霸能源科技开发有限责任公司 High-efficiency flue gas processing process and device
CN105477986A (en) * 2015-11-24 2016-04-13 广西阔能霸能源科技开发有限责任公司 Flue gas treatment technology and apparatus thereof
CN105498489A (en) * 2015-11-24 2016-04-20 广西阔能霸能源科技开发有限责任公司 A boiler flue gas treatment process and a device
CN105498488A (en) * 2015-11-24 2016-04-20 广西阔能霸能源科技开发有限责任公司 A flue gas treatment method

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