CN108176202A - A kind of preparation method and application of desulfuration adsorbent - Google Patents
A kind of preparation method and application of desulfuration adsorbent Download PDFInfo
- Publication number
- CN108176202A CN108176202A CN201711437135.4A CN201711437135A CN108176202A CN 108176202 A CN108176202 A CN 108176202A CN 201711437135 A CN201711437135 A CN 201711437135A CN 108176202 A CN108176202 A CN 108176202A
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- Prior art keywords
- hco
- desulfuration adsorbent
- tail portion
- desulfuration
- large amount
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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
- B01D53/34—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of preparation methods of desulfuration adsorbent, and excessive carbon dioxide is added in into clear limewash, and desulfuration adsorbent Ca (HCO) is made, is counted in mass ratio in the Ca (HCO), water：Ca (HCO) is 48, the desulfuration adsorbent Ca (HCO) prepared according to the method described above is handled for tail portion in desulphurization system, by using Ca (HCO) in desulphurization system tail portion processing can further desulfurization and in and the alkaline desulfurizing agents of complete other of unreacted, generation CaCO3Precipitation can reuse, and achieve the effect that heat recovery, and cost is saved, while the preparation method of Ca (HCO) desulfuration adsorbent is simple for enterprise.
Description
Technical field
The present invention relates to technical field of waste gas treatment, it particularly relates to the preparation method of a kind of desulfuration adsorbent and should
With.
Background technology
Sulfur dioxide (SO in air2) it is to be distributed most extensively, quantity is maximum, endangers one of gas pollutant of most serious,
Its main source has the burning of sulfurous fuels, the smelting of containing sulfur minerals, and the exhaust gas of chemical industry also has what cement kiln waste gas discharged
SO2Wait industry.
SO2It is one of main predecessor of acid rain, the SO in China2Discharge capacity now has occupied the first place in the world, and per annual emissions
The trend also increased, so as to be formed on the south the Changjiang river, the acid rain of large area to the east of Qinghai-Tibet Platean, wherein using Changsha as the China of representative
Middle Acid Rain Zone acidity value is minimum, frequency of occurrences highest, and in the gesture of exacerbation；Southwestern Acid Rain Zone is taken second place, south China Acid Rain Zone and East China
Coastal Acid Rain Zone distribution is most wide, seriously polluted.Have now found that sulfur dioxide and its acid rain to forest, soil, crops and building
Object damages.
Therefore, it is primary abatement method to carry out desulfurization process to industrial discharge flue gas, for this purpose, to the sulfur method of flue gas
Research has economic, social, environmental benefit well.
At present, used processing method is utilizes alkali and SO2It is neutralized, but is had the following disadvantages：One is and
It cannot be by SO2It fully absorbs, there is the incomplete situation of reaction, the second is the alkali incomplete reaction used in reaction is complete, cause alkali
The waste of itself is exactly to fail to realize by the use of alkali as adsorbent desulfurization to recycle on the whole, used in the prior art
Alkali be mostly Ca (OH)2, NaOH, quick lime etc., there has been no about using Ca (HCO3)2Record as desulfuration adsorbent.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Invention content
For the above-mentioned technical problem in the relevant technologies, the present invention proposes a kind of preparation method of desulfuration adsorbent and answers
With above-mentioned technical problem can be solved.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A kind of desulfuration adsorbent is made of the raw material of following mass ratio：4-8 parts of underground water, the 1 part of Ca for containing a large amount of calcium ions
(HCO3)2。
Further, it is made of the raw material of following mass ratio：5 parts of underground water, 1 part of Ca for containing a large amount of calcium ions
(HCO3)2。
Further, calcium ion mass content is 8%-12% in the underground water containing a large amount of calcium ions.
Further, calcium ion mass content is 10% in the underground water containing a large amount of calcium ions.
A kind of preparation method of desulfuration adsorbent, including：Excessive carbon dioxide is added in into clear limewash, is made
Ca(HCO3)2, wherein, the water in the limewash is the underground water containing a large amount of calcium ions.
The desulfuration adsorbent purposes that tail portion is handled in desulphurization system.
Further, the tail portion processing including the use of desulfuration adsorbent desulfurization process and neutralizes alkali process.
Further, the desulfurization process is utilizes desulfuration adsorbent and exhaust gas SO2Reaction.
Further, the neutralization alkali process be using tail portion in desulfuration adsorbent and the complete desulphurization system of unreacted it
It is preceding carry out neutralizing alkali using alkaline desulfuration adsorbent react.
Beneficial effects of the present invention：By using Ca (HCO3)2Tail portion processing can further desulfurization be simultaneously in desulphurization system
And other complete alkaline desulfurizing agents of unreacted are neutralized, generate CaCO3Precipitation can reuse, and reach the effect of heat recovery
Fruit saves cost, while Ca (HCO for enterprise3)2The preparation method of desulfuration adsorbent is simple.
Specific embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained, shall fall within the protection scope of the present invention.
Embodiment 1：
Excessive carbon dioxide is added in into clear limewash, desulfuration adsorbent Ca (HCO are made3)2, the Ca (HCO3)2In
It counts in mass ratio, water：Ca(HCO3)2It is 4：1, the wherein water in limewash is the underground water containing a large amount of calcium ions, in underground water
It is 8% that calcium ion, which accounts for gross mass percentage,.
Certain coal-burning utilities is adsorbed in desulphurization system in the processing step of tail portion using desulfurization prepared by the embodiment of the present invention 1
Agent Ca (HCO3)2, Ca (OH) is used in enterprise's desulphurization system before tail portion is handled2As adsorbent, by Ca (OH)2Place
Also there are SO by detection for gas after reason2, SO2A concentration of 150mg/m3, atmospheric emission standard is still unsatisfactory for, continues tail
Portion is handled, and utilizes Ca (HCO3)2With the complete SO of unreacted2It is reacted, and by the complete Ca of unreacted (OH)2Use Ca
(HCO3)2It carries out, generation neutralizes CaCO3Precipitation, by treated for tail portion, gas carries out SO again2Content detection, testing result
For SO2A concentration of 40mg/m3, fully meet atmospheric emission standard, and the CaCO of tail portion processing generation3Precipitation can reuse,
Achieve the effect that heat recovery, cost is saved for enterprise.
Embodiment 2：
Excessive carbon dioxide is added in into clear limewash, desulfuration adsorbent Ca (HCO are made3)2, the Ca (HCO3)2In
It counts in mass ratio, water：Ca(HCO3)2It is 5：1, the wherein water in limewash is the underground water containing a large amount of calcium ions, in underground water
It is 10% that calcium ion, which accounts for gross mass percentage,.
Certain coal-burning utilities is adsorbed in desulphurization system in the processing step of tail portion using desulfurization prepared by the embodiment of the present invention 2
Agent Ca (HCO3)2, before tail portion is handled using NaOH in enterprise's desulphurization system, by NaOH, treated as adsorbent
Also there are SO by detection for gas2, SO2A concentration of 169mg/m3, atmospheric emission standard is still unsatisfactory for, continues tail portion processing,
Utilize Ca (HCO3)2With the complete SO of unreacted2It is reacted, and by unreacted complete NaOH Ca (HCO3)2It carries out, generation
Neutralize CaCO3Precipitation, by treated for tail portion, gas carries out SO again2Content detection, testing result SO2A concentration of 43mg/
m3, fully meet atmospheric emission standard, and the CaCO of tail portion processing generation3Precipitation can reuse, and reach heat recovery
Effect, for enterprise save cost.
Embodiment 3：
Excessive carbon dioxide is added in into clear limewash, desulfuration adsorbent Ca (HCO are made3)2, the Ca (HCO3)2In
It counts in mass ratio, water：Ca(HCO3)2It is 8：1, the wherein water in limewash is the underground water containing a large amount of calcium ions, in underground water
It is 12% that calcium ion, which accounts for gross mass percentage,.
Certain coal-burning utilities is adsorbed in desulphurization system in the processing step of tail portion using desulfurization prepared by the embodiment of the present invention 3
Agent Ca (HCO3)2, quick lime is used to be handled as adsorbent by quick lime before tail portion is handled in enterprise's desulphurization system
Also there are SO by detection for gas afterwards2, SO2A concentration of 169mg/m3, atmospheric emission standard is still unsatisfactory for, continues tail portion
Processing, utilizes Ca (HCO3)2With the complete SO of unreacted2It is reacted, and the complete quick lime of unreacted is met to the Ca of water generation
(OH)2With Ca (HCO3)2It is neutralized, generation neutralizes CaCO3Precipitation, by treated for tail portion, gas carries out SO again2Content
Detection, testing result SO2A concentration of 43mg/m3, fully meet atmospheric emission standard, and the CaCO of tail portion processing generation3It is heavy
Shallow lake can reuse, and achieve the effect that heat recovery, and cost is saved for enterprise.
Embodiment 1-3 exists, and tail portion processing is former mainly including two steps, desulfurization process and neutralization alkali process in desulphurization system
Reason is respectively：
Desulfurization process：
2 Ca(HCO3)2+SO2 =CaSO3 +CaCO3 +3CO2 +2H2 O (SO2It is insufficient)
Ca(HCO3)2 +SO2 =CaSO3 +2CO2+H2O （Equivalent）
Ca(HCO3)2 +2SO2 =Ca(HSO3)2 +2CO2（SO2 is excessive）
Neutralize alkali process：
Ca(HCO3)2+Ca(OH)2 ===2CaCO3↓+2H2 O
In conclusion by means of the above-mentioned technical proposal of the present invention, by using Ca (HCO3)2Tail portion is handled in desulphurization system
Further desulfurization and the alkaline desulfurizing agents of complete other of unreacted can be neutralized, generate CaCO3Precipitation can reuse, and reach energy
The effect that source recycles saves cost, while Ca (HCO for enterprise3)2The preparation method of desulfuration adsorbent is simple.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of desulfuration adsorbent, which is characterized in that its raw material by following mass ratio forms：4-8 parts contain a large amount of calcium ions
Underground water, 1 part of Ca (HCO3)2。
2. a kind of desulfuration adsorbent according to claim 1, which is characterized in that its raw material by following mass ratio forms：5 parts
Underground water containing a large amount of calcium ions, 1 part of Ca (HCO3)2。
3. a kind of desulfuration adsorbent according to claim 1, which is characterized in that in the underground water containing a large amount of calcium ions
Calcium ion mass content is 8%-12%.
4. a kind of desulfuration adsorbent according to claim 3, which is characterized in that in the underground water containing a large amount of calcium ions
Calcium ion mass content is 10%.
5. a kind of any one of claim 1-4 preparation methods of desulfuration adsorbent, which is characterized in that including：To clear
Excessive carbon dioxide is added in limewash, Ca (HCO are made3)2, wherein, the water in the limewash is containing a large amount of calcium ions
Underground water.
6. claim 1-4 any one of them desulfuration adsorbents purposes that tail portion is handled in desulphurization system.
7. purposes according to claim 6, which is characterized in that the tail portion is handled at including the use of desulfuration adsorbent desulfurization
Reason and neutralization alkali process.
8. purposes according to claim 7, which is characterized in that the desulfurization process is utilizes desulfuration adsorbent and exhaust gas SO2
Reaction.
9. purposes according to claim 7, which is characterized in that the neutralization alkali process is using desulfuration adsorbent and not anti-
Institute is answered in complete desulphurization system before tail portion to carry out neutralizing alkali using alkaline desulfuration adsorbent and react.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711437135.4A CN108176202A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method and application of desulfuration adsorbent |
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| CN201711437135.4A CN108176202A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method and application of desulfuration adsorbent |
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| CN108176202A true CN108176202A (en) | 2018-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461034A (en) * | 2021-08-04 | 2021-10-01 | 中南大学 | Method for producing sodium sulfite from desulfurized gypsum |
Citations (5)
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|---|---|---|---|---|
| CN2571466Y (en) * | 2002-09-11 | 2003-09-10 | 陈宝华 | Energy-saving dust and smoke remover |
| WO2008100317A1 (en) * | 2007-02-16 | 2008-08-21 | Mecs, Inc. | Scrubber system for the desulfurization of gaseous streams |
| CN107261825A (en) * | 2017-07-31 | 2017-10-20 | 董小军 | A kind of cement kiln flue gas catalytic desulfurization aqua |
| CN107344788A (en) * | 2017-09-04 | 2017-11-14 | 福建龙净环保股份有限公司 | A kind of desulfurization wastewater treatment system |
| CN107433125A (en) * | 2017-09-13 | 2017-12-05 | 兖矿集团有限公司 | A kind of civil cooking stove flue gas desulfurization and denitrification agent and application thereof |
-
2017
- 2017-12-26 CN CN201711437135.4A patent/CN108176202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2571466Y (en) * | 2002-09-11 | 2003-09-10 | 陈宝华 | Energy-saving dust and smoke remover |
| WO2008100317A1 (en) * | 2007-02-16 | 2008-08-21 | Mecs, Inc. | Scrubber system for the desulfurization of gaseous streams |
| CN107261825A (en) * | 2017-07-31 | 2017-10-20 | 董小军 | A kind of cement kiln flue gas catalytic desulfurization aqua |
| CN107344788A (en) * | 2017-09-04 | 2017-11-14 | 福建龙净环保股份有限公司 | A kind of desulfurization wastewater treatment system |
| CN107433125A (en) * | 2017-09-13 | 2017-12-05 | 兖矿集团有限公司 | A kind of civil cooking stove flue gas desulfurization and denitrification agent and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461034A (en) * | 2021-08-04 | 2021-10-01 | 中南大学 | Method for producing sodium sulfite from desulfurized gypsum |
| CN113461034B (en) * | 2021-08-04 | 2022-07-22 | 中南大学 | Method for producing sodium sulfite from desulfurized gypsum |
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Application publication date: 20180619 |