CN109092015A - A kind of alkali aluminium method of reproduction new process for fume desulfurization - Google Patents
A kind of alkali aluminium method of reproduction new process for fume desulfurization Download PDFInfo
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- CN109092015A CN109092015A CN201811056106.8A CN201811056106A CN109092015A CN 109092015 A CN109092015 A CN 109092015A CN 201811056106 A CN201811056106 A CN 201811056106A CN 109092015 A CN109092015 A CN 109092015A
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- Prior art keywords
- desorption
- section
- solution
- new process
- gas
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01D53/14—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 absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01D53/14—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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The present invention relates to a kind of sulfur removal technology, especially a kind of alkali aluminium method of reproduction new process for fume desulfurization, comprising the following steps: 1) prepared by solution；2) regenerative section；3) purification section；4) desorption workshop section is absorbed；5) liquid SO2Workshop section.By short-term experiments have shown that: 180 DEG C or so of flue gas, it is washed, absorb after, temperature drops to 40 DEG C hereinafter, SO2Absorption efficiency can reach 90% or more, tail gas SO2Concentration reaches environment protection emission requirement.
Description
Technical field
The present invention relates to a kind of sulfur removal technology, especially a kind of alkali aluminium method of reproduction new process for fume desulfurization.
Background technique
Currently, absorbing SO in flue gas using basic aluminium sulphate solution as absorbent in the world2, carry out the side of flue gas desulfurization
There are two types of methods, i.e., (abbreviation alkali aluminium is again for one gypsum of basic aluminium sulphate (abbreviation alkali aluminium gypsum) and one method of reproduction of basic aluminium sulphate
It thinks of a way).The former develops and industrializes for Japan, and the latter is a new technology of China's exploitation.China's gypsum relieving haperacidity technology is not yet
Large-scale promotion, gypsum slack market, alkali aluminium gypsum desulfurization technical economic benefit is unobvious, therefore it is larger to promote difficulty.Alkali aluminium
Method of reproduction major product is SO2Gas, and ready-made process production liquid SO can be used2, sulfuric acid or elemental sulfur mouth absorbent
It can be recycled in systems, therefore its economic significance is larger.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of alkali aluminium method of reproduction new process for fume desulfurization
The technical solution of the present invention is as follows: a kind of alkali aluminium method of reproduction new process for fume desulfurization, it is characterised in that: the following steps are included:
1) prepared by solution；
2) regenerative section；
3) purification section；
4) desorption workshop section is absorbed；
5) liquid SO2Workshop section.
Solution preparation and regenerative section the following steps are included:
Basic aluminium sulphate solution is made under the conditions of room temperature, continuous operation using industrial aluminum sulphate, limestone fines as raw material
, a certain amount of industrial sulphuric acid aluminum solutions are added into neutralization chamber first, start blender and pump, are then added a certain amount of
Steady agent and crystal seed, add limestone fines, and the turbid after reaction enters concentrator sedimentation, and supernatant liquor overflow goes to absorb desorption
Workshop section, lower layer's turbid are squeezed into centrifuge through pump and are filtered, and filtrate returns to concentrator, gypsum discharge；Part needs regenerated solution,
It draws, neutralization chamber is added and is reacted with lime stone, removing unit SO from desorption workshop section is absorbed2, improve basicity.
The purification section the following steps are included:
The flue gas of power plants drawn from electric precipitator outlet is cooled to adiabatic saturation temperature into vertical Venturi scrubber, and
The flue dust and other acidic components for washing away the overwhelming majority, such as HF, HCI and SO2, the tail gas after previous cleaning is again through the further water of foaming tower
Cooling is washed, dedusting moves heat, keeps the water balance of purification section, need to supplement amount of water.
The absorption desorption workshop section the following steps are included:
The tail gas that purification section comes out introduces absorption tower by blower, and the absorbing liquid with tower top sprinkle carries out counter current contacting suction
It receives, most SO2It is absorbed, in accordance with the tail gas that environmental emission requires, is discharged through chimney, absorbs SO2Gas it is molten
Liquid is discharged from absorption tower bottom, flows into desorption circulating slot, liquid to be taken off is through pump, plate heat exchanger, into the preliminary desorption SO of desorption tower2
Then gas flows into falling film evaporator, further desorption, desorption SO naturally2The solution of gas, then through plate heat exchanger, finally
Absorption cycle slot is returned to, for absorbing or regenerating.
The invention has the benefit that
By short-term experiments have shown that: 180 DEG C or so of flue gas, it is washed, absorb after, temperature drops to 40 DEG C hereinafter, SO2's
Absorption efficiency can reach 90 % or more, tail gas SO2Concentration reaches environment protection emission requirement.
Specific embodiment
Specific embodiments of the present invention will be further explained below:
A kind of alkali aluminium method of reproduction new process for fume desulfurization, comprising the following steps:
1) prepared by solution；
2) regenerative section；
3) purification section；
4) desorption workshop section is absorbed；
5) liquid SO2Workshop section.
Solution preparation and regenerative section the following steps are included:
Basic aluminium sulphate solution is made under the conditions of room temperature, continuous operation using industrial aluminum sulphate, limestone fines as raw material
, a certain amount of industrial sulphuric acid aluminum solutions are added into neutralization chamber first, start blender and pump, are then added a certain amount of
Steady agent and crystal seed, add limestone fines, and the turbid after reaction enters concentrator sedimentation, and supernatant liquor overflow goes to absorb desorption
Workshop section, lower layer's turbid are squeezed into centrifuge through pump and are filtered, and filtrate returns to concentrator, gypsum discharge；Part needs regenerated solution,
It draws, neutralization chamber is added and is reacted with lime stone, removing unit SO from desorption workshop section is absorbed2, improve basicity.
The purification section the following steps are included:
The flue gas of power plants drawn from electric precipitator outlet is cooled to adiabatic saturation temperature into vertical Venturi scrubber, and
The flue dust and other acidic components for washing away the overwhelming majority, such as HF, HCI and SO2, the tail gas after previous cleaning is again through the further water of foaming tower
Cooling is washed, dedusting moves heat, keeps the water balance of purification section, need to supplement amount of water.
The absorption desorption workshop section the following steps are included:
The tail gas that purification section comes out introduces absorption tower by blower, and the absorbing liquid with tower top sprinkle carries out counter current contacting suction
It receives, most SO2It is absorbed, in accordance with the tail gas that environmental emission requires, is discharged through chimney, absorbs SO2Gas it is molten
Liquid is discharged from absorption tower bottom, flows into desorption circulating slot, liquid to be taken off is through pump, plate heat exchanger, into the preliminary desorption SO of desorption tower2
Then gas flows into falling film evaporator, further desorption, desorption SO naturally2The solution of gas, then through plate heat exchanger, finally
Absorption cycle slot is returned to, for absorbing or regenerating.
The above embodiments and description only illustrate the principle of the present invention and most preferred embodiment, is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.
Claims (4)
1. a kind of alkali aluminium method of reproduction new process for fume desulfurization, it is characterised in that: the following steps are included:
1) prepared by solution；
2) regenerative section；
3) purification section；
4) desorption workshop section is absorbed；
5) liquid SO2Workshop section.
2. a kind of alkali aluminium method of reproduction new process for fume desulfurization according to claim 1, it is characterised in that: the solution preparation
With regenerative section the following steps are included:
Basic aluminium sulphate solution is made under the conditions of room temperature, continuous operation using industrial aluminum sulphate, limestone fines as raw material
, a certain amount of industrial sulphuric acid aluminum solutions are added into neutralization chamber first, start blender and pump, are then added a certain amount of
Steady agent and crystal seed, add limestone fines, and the turbid after reaction enters concentrator sedimentation, and supernatant liquor overflow goes to absorb desorption
Workshop section, lower layer's turbid are squeezed into centrifuge through pump and are filtered, and filtrate returns to concentrator, gypsum discharge；Part needs regenerated solution,
It draws, neutralization chamber is added and is reacted with lime stone, removing unit SO from desorption workshop section is absorbed2, improve basicity.
3. a kind of alkali aluminium method of reproduction new process for fume desulfurization according to claim 1, it is characterised in that: the purification section
The following steps are included:
The flue gas of power plants drawn from electric precipitator outlet is cooled to adiabatic saturation temperature into vertical Venturi scrubber, and
The flue dust and other acidic components for washing away the overwhelming majority, such as HF, HCI and SO2, the tail gas after previous cleaning is again through the further water of foaming tower
Cooling is washed, dedusting moves heat, keeps the water balance of purification section, need to supplement amount of water.
4. a kind of alkali aluminium method of reproduction new process for fume desulfurization according to claim 1, it is characterised in that: the absorption desorption
Workshop section the following steps are included:
The tail gas that purification section comes out introduces absorption tower by blower, and the absorbing liquid with tower top sprinkle carries out counter current contacting absorption,
The SO of the overwhelming majority2It is absorbed, in accordance with the tail gas that environmental emission requires, is discharged through chimney, absorbs SO2The solution of gas,
It is discharged from absorption tower bottom, flows into desorption circulating slot, liquid to be taken off is through pump, plate heat exchanger, into the preliminary desorption SO of desorption tower2Gas
Then body flows into falling film evaporator, further desorption, desorption SO naturally2The solution of gas, then through plate heat exchanger, finally return
Resorption receives circulating slot, for absorbing or regenerating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056106.8A CN109092015A (en) | 2018-09-11 | 2018-09-11 | A kind of alkali aluminium method of reproduction new process for fume desulfurization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811056106.8A CN109092015A (en) | 2018-09-11 | 2018-09-11 | A kind of alkali aluminium method of reproduction new process for fume desulfurization |
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| CN201811056106.8A Pending CN109092015A (en) | 2018-09-11 | 2018-09-11 | A kind of alkali aluminium method of reproduction new process for fume desulfurization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354640A (en) * | 2019-07-03 | 2019-10-22 | 广西夏阳环保科技有限公司 | A kind of efficient composite desulfurizer for big desulfurization |
| CN110935304A (en) * | 2019-12-02 | 2020-03-31 | 内蒙古工业大学 | Basic aluminum sulfate regeneration desulfurization method based on inhibition of oxidation and multi-field synergistic desorption |
-
2018
- 2018-09-11 CN CN201811056106.8A patent/CN109092015A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354640A (en) * | 2019-07-03 | 2019-10-22 | 广西夏阳环保科技有限公司 | A kind of efficient composite desulfurizer for big desulfurization |
| CN110354640B (en) * | 2019-07-03 | 2021-12-14 | 广西夏阳环保科技有限公司 | High-efficiency composite desulfurizer for atmospheric desulfurization |
| CN110935304A (en) * | 2019-12-02 | 2020-03-31 | 内蒙古工业大学 | Basic aluminum sulfate regeneration desulfurization method based on inhibition of oxidation and multi-field synergistic desorption |
| CN110935304B (en) * | 2019-12-02 | 2021-10-12 | 内蒙古工业大学 | Basic aluminum sulfate regeneration desulfurization method based on inhibition of oxidation and multi-field synergistic desorption |
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Application publication date: 20181228 |
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| WD01 | Invention patent application deemed withdrawn after publication |