CN106925088A - A kind of modified technique with white clay desulfurizing agent - Google Patents
A kind of modified technique with white clay desulfurizing agent Download PDFInfo
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- CN106925088A CN106925088A CN201511002992.2A CN201511002992A CN106925088A CN 106925088 A CN106925088 A CN 106925088A CN 201511002992 A CN201511002992 A CN 201511002992A CN 106925088 A CN106925088 A CN 106925088A
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- desulfurizing agent
- white clay
- ion
- modified technique
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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
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- 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)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of modified technique with white clay desulfurizing agent, it is characterised in that：The white clay alkaline residue produced with soda ash enterprise, by water-soluble and ultrasonic agitation, adds sodium carbonate liquor as raw material, agitating heating, and then filtering, drying and calcination, prepare sodium ion, magnesium ion and the low alkaline desulfurizing agent of chloride ion content.It is an advantage of the invention that：A kind of white clay desulfurizing agent modified technique that sodium ion, magnesium ion and the low gypsum product of chloride ion content can be provided, efficient desulfurizing agent can be provided for boiler flue gas desulfurization, it can be again the alkaline residue solid waste searching efficient resource approach of soda industry, qualified gypsum product is obtained, with significant economic benefit and environmental benefit.
Description
Technical field
The present invention relates to a kind of modified technique with white clay desulfurizing agent.
Background technology
Soda ash is one of important industrial chemicals, but the treatment of a large amount of alkaline residues produced in its production process and using being the great difficult problem that perplexs ammonia alkali enterprise, the sustainable growth of China's annual production in recent years, the solid alkaline residue of whole nation discharge is up to 3,500,000 tons within 2013.The alkaline residue that liquid and waste slag produced clarified and press filtration is obtained is white paste, is commonly called as " white clay ", and main component has CaCO3、CaSO4、CaCl2, NaCl and Mg (OH)2Deng being a kind of comparatively ideal desulfurizing agent raw material.The technology of gypsum is produced using alkaline residue removing boiler flue gas sulphur dioxide, has been selected in soda industry clearer production technology and has been carried out scheme promotional technique catalogue, have the advantage of alkaline residue comprehensive utilization and flue gas desulfurization concurrently.But in view of the self character of desulfurizing agent white clay, if being directly used in sulfur removal technology, the desulfurated plaster product purity of generation is unstable, moisture content is higher, soluble-salt contaminant overstandard, unreacted calcium carbonate is exceeded, and containing impurity such as chlorion higher, magnesia, so as to have impact on the stability and security of desulfurated plaster recycling.The wherein presence of sodium ion, magnesium ion and chlorion can reduce gypsum heat dehydration performance, reduce the hydrating capacity and hardening capacity of gypsum, and chlorion can cause gypsum dehydration performance drastically to decline, and increase etching apparatus and reinforcing bar equivalent risk.Thus white clay desulfurated plaster is purified, reduces or remove that the foreign ions such as sodium ion in white clay desulfurated plaster, magnesium ion and chlorion are extremely important, the industrial general method using rinsing-settling.But the grain diameter of partial desulfurization gypsum is very thin, sedimentation is difficult, is difficult to realize, removal effect is not obvious.
In sum, a kind of white clay desulfurizing agent modified technique that sodium ion, magnesium ion and the low gypsum product of chloride ion content can be provided, efficient desulfurizing agent can be provided for boiler flue gas desulfurization, it can be again the alkaline residue solid waste searching efficient resource approach of soda industry, qualified gypsum product is obtained, with significant economic benefit and environmental benefit.
The content of the invention
The present invention provides a kind of modified technique with white clay desulfurizing agent.The white clay alkaline residue produced with soda ash enterprise, by water-soluble and ultrasonic agitation, adds sodium carbonate liquor as raw material, agitating heating, and then filtering, drying and calcination, prepare sodium ion, magnesium ion and the low alkaline desulfurizing agent of chloride ion content.Comprise the following steps：1）White clay is mixed and the h of ultrasonic agitation 6 with water, certain density sodium carbonate liquor is added, 40 DEG C of 6 h of stirring are heated to；2）By 1）After middle resulting solution filtering, 1 is repeated）Step, refilters, and then gained filter cake is in 80 DEG C of h of drying 6, finally 500 DEG C of 4 h of calcining under nitrogen atmosphere, obtains solid；3）By 2）Middle gained solid is ground, and is then mixed with water again, that is, obtain foreign ion and meet desired wet type desulfurizing agent.
The white clay is 0.001~100 with water mixed volume ratio.
The agitating mode is ultrasonic agitation.
The sodium carbonate liquor concentration is 1%~30%.
The sodium ion, magnesium ion and chlorine ion concentration are 0.01%~0.4%.
Advantages of the present invention and effect：A kind of white clay desulfurizing agent modified technique that sodium ion, magnesium ion and the low gypsum product of chloride ion content can be provided, efficient desulfurizing agent can be provided for boiler flue gas desulfurization, it can be again the alkaline residue solid waste searching efficient resource approach of soda industry, qualified gypsum product is obtained, with significant economic benefit and environmental benefit.
Specific embodiment
With reference to embodiment, the present invention is further described, but they are not that the present invention is imposed any restrictions.Here only point out, the reagent and test equipment used in the present invention are the commercially available universal product in addition to especially indicating the source.
Embodiment 1.A kind of modified technique with white clay desulfurizing agent, comprises the following steps：1）100 g white clays are mixed and the h of ultrasonic agitation 6 with 500 ml water, the sodium carbonate liquors of 500 ml 15% are added, 40 DEG C of 6 h of stirring are heated to；2）By 1）After middle resulting solution filtering, 1 is repeated）Step, refilters, and then gained filter cake is in 80 DEG C of h of drying 6, finally 500 DEG C of 4 h of calcining under nitrogen atmosphere, obtains solid；3）By 2）Middle gained solid is ground, and is then mixed with 100 ml water again, that is, obtain foreign ion and meet desired wet type desulfurizing agent, and wherein sodium ion, magnesium ion and chlorine ion concentration is below 0.2%.
Embodiment 2.A kind of modified technique with white clay desulfurizing agent, comprises the following steps：1）100 g white clays are mixed and the h of ultrasonic agitation 6 with 800 ml water, the sodium carbonate liquors of 200 ml 18% are added, 40 DEG C of 6 h of stirring are heated to；2）By 1）After middle resulting solution filtering, 1 is repeated）Step, refilters, and then gained filter cake is in 80 DEG C of h of drying 6, finally 500 DEG C of 4 h of calcining under nitrogen atmosphere, obtains solid；3）By 2）Middle gained solid is ground, and is then mixed with 100 ml water again, that is, obtain foreign ion and meet desired wet type desulfurizing agent, and wherein sodium ion, magnesium ion and chlorine ion concentration is about 0.1%.
The present invention discloses a kind of modified technique with white clay desulfurizing agent, those skilled in the art can be by using for reference present disclosure, the appropriate links such as process route that change are realized, although the method for the present invention is described by preferred embodiment, person skilled substantially can realize final result not departing from present invention and scope be modified method described herein or reconfigure.In particular, all similar replacements and change are apparent to those skilled in the art, and they are considered as being included in present disclosure and scope.
Claims (5)
1. a kind of modified technique with white clay desulfurizing agent, it is characterised in that：The white clay alkaline residue produced with soda ash enterprise, by water-soluble and ultrasonic agitation, adds sodium carbonate liquor as raw material, agitating heating, and then filtering, drying and calcination, prepare sodium ion, magnesium ion and the low alkaline desulfurizing agent of chloride ion content, comprise the following steps：1）White clay is mixed and ultrasonic agitation 6 with water
H, adds certain density sodium carbonate liquor, is heated to 40 DEG C of 6 h of stirring；2）By 1）After middle resulting solution filtering, 1 is repeated）Step, refilters, and then gained filter cake is in 80 DEG C of h of drying 6, finally 500 DEG C of 4 h of calcining under nitrogen atmosphere, obtains solid；3）By 2）Middle gained solid is ground, and is then mixed with water again, that is, obtain foreign ion and meet desired wet type desulfurizing agent.
2. the modified technique with white clay desulfurizing agent according to claim 1, it is characterised in that：The white clay is 0.001~100 with water mixed volume ratio.
3. the modified technique with white clay desulfurizing agent according to claim 1, it is characterised in that：The agitating mode is ultrasonic agitation.
4. the modified technique with white clay desulfurizing agent according to claim 1, it is characterised in that：The sodium carbonate liquor concentration is 1%~30%.
5. the modified technique with white clay desulfurizing agent according to claim 1, it is characterised in that：The sodium ion, magnesium ion and chlorine ion concentration are 0.01%~0.4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002992.2A CN106925088A (en) | 2015-12-29 | 2015-12-29 | A kind of modified technique with white clay desulfurizing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002992.2A CN106925088A (en) | 2015-12-29 | 2015-12-29 | A kind of modified technique with white clay desulfurizing agent |
Publications (1)
| Publication Number | Publication Date |
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| CN106925088A true CN106925088A (en) | 2017-07-07 |
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| CN201511002992.2A Pending CN106925088A (en) | 2015-12-29 | 2015-12-29 | A kind of modified technique with white clay desulfurizing agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497284A (en) * | 2017-09-30 | 2017-12-22 | 四川德胜集团钒钛有限公司 | A kind of technological process for sintering white cigarette desulfurization |
| CN108101089A (en) * | 2017-12-25 | 2018-06-01 | 绵阳市荣坤科技有限公司 | A kind of method that high-quality calcium carbonate albarium is prepared using paper white sludge |
| CN115594862A (en) * | 2022-08-26 | 2023-01-13 | 关祥瑞（Cn） | Method and equipment for preparing humic acid calcium magnesium chelating liquid by using ammonia-soda alkaline residue |
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| CN1248483A (en) * | 1999-10-14 | 2000-03-29 | 王晋宁 | Flue gas desulfurizing agent and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497284A (en) * | 2017-09-30 | 2017-12-22 | 四川德胜集团钒钛有限公司 | A kind of technological process for sintering white cigarette desulfurization |
| CN108101089A (en) * | 2017-12-25 | 2018-06-01 | 绵阳市荣坤科技有限公司 | A kind of method that high-quality calcium carbonate albarium is prepared using paper white sludge |
| CN115594862A (en) * | 2022-08-26 | 2023-01-13 | 关祥瑞（Cn） | Method and equipment for preparing humic acid calcium magnesium chelating liquid by using ammonia-soda alkaline residue |
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Application publication date: 20170707 |