CN103537183A - Preparation and using methods of humidification type flue gas circulating fluidized bed desulfurization synergist - Google Patents
Preparation and using methods of humidification type flue gas circulating fluidized bed desulfurization synergist Download PDFInfo
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- CN103537183A CN103537183A CN201310528824.1A CN201310528824A CN103537183A CN 103537183 A CN103537183 A CN 103537183A CN 201310528824 A CN201310528824 A CN 201310528824A CN 103537183 A CN103537183 A CN 103537183A
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Abstract
The invention relates to preparation and using methods of a humidification type flue gas circulating fluidized bed desulfurization synergist. The humidification type flue gas circulating fluidized bed desulfurization synergist comprises 1.25%-1.33% by weight of moisture absorbent (the percentage with respect to a desulfurizer) and 0.028%-0.031% by weight of surfactant. The preparation method provided by the invention has the advantages of easiness in obtaining and cheap price of materials, simple preparation process and no secondary environmental pollution. The well prepared desulfurization synergist is added into a desulfurization tower according to the using method, and the surface tension of a solvent is reduced, so that the dissolution of sulfur dioxide is promoted, the contact time of a solid phase, a liquid phase and a gas phase is increased and the desulfurization efficiency is further improved.
Description
Technical field
The method of preparation and use that the present invention relates to a kind of humidification type flue gas circulating fluidized bed desulfurization synergist, this synergist is mainly used in improving the desulfuration efficiency of circulating fluidized bed desulfurization tower.
Background technology
China is the big country of a production of energy and consumption, and its energy-output ratio occupies the second in the world, and in the structure of energy resource consumption, coal resources have occupied maximum ratio.According to coal industry association, add up: within 2011, coal in China output is 35.2 hundred million tons, accounts for total output of primary energy 78.6%; 35.7 hundred million tons of consumption of coal total amounts, account for primary energy total quantity consumed 72.8%.The resource situation of the rich coal of China, oil starvation, weak breath has determined that, within longer from now on period, coal resources are still the main energy sources of China.Primary energy consumption industry, the especially power industry of China still be take coal-fired unit as main.And the development of emission problem Hai Jiang the Long-term Effect China of the atmosphere polluting problem being produced by fire coal, especially SO2.
The research of desulfur technology has had more than 90 year, and desulfur technology has hundreds of, and these desulfur technologies can be divided three classes by process characteristic, that is: desulfurization after desulfurization and burning in desulfurization before burning, burning.
Wherein after burning, desulfurization is that flue gas desulfurization is the most effective, the most widely used desulfur technology of controlling at present SO2 discharge.By absorbent and desulfurization product, the dry and wet state in sweetening process can be divided into: wet method, dry method and semidry method.Common Wet Flue Gas Desulfurization Technology has: limestone/lime-gypsum method, sodium sulfite absorption cycle, magnesia and sea water desulfuration etc.Wet Flue Gas Desulfurization Technology comparative maturity, dominate in numerous desulfur technologies, but wet process of FGD exists initial investment large, system complex, and floor space is large, and energy consumption is high, and equipment corrosion is serious, and pipeline easily stops up, and waste water is difficult to the problems such as processing.The shortcomings such as desulfurization by dry method exists sorbent utilization low, and desulfuration efficiency is low.
Therefore, semi-dry desulphurization technology is as the Some features that has dry and wet way concurrently, particularly desulfurization under wet condition, under dry state, process desulfurization product, and have the fast and dry method of wet desulphurization reaction speed concurrently without wastewater and waste acid discharge, the easy-to-handle benefit of desulfurization afterproduct, and more and more get more and more people's extensive concerning.Although semi-dry desulphurization has plurality of advantages, its desulfuration efficiency is than the low extensive use that has affected it of wet method.Therefore people still need that a kind of material is easy to get, low price, preparation technology be simple, to environment, can not cause the desulfurization synergistic agent of secondary pollution to improve desulfuration efficiency.
Summary of the invention
The present invention is that a kind of material is easy to get in order to provide, low price, preparation technology are simple, can not cause the desulfurization synergistic agent of secondary pollution to environment.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
Humidification type circulating fluidized bed desulfurization tower desulfurization synergistic of the present invention agent, it comprises following composition: quality percentage composition is 1.25%-1.3% hygroscopic agent (percentage in desulfurization product), quality percentage composition is the raw agent alive of 0.028%-0.031% surface.
Described hygroscopic agent is magnesium chloride.
Described surfactant is sodium alkyl benzene sulfonate.
The preparation method of described humidification type circulating fluidized bed desulfurization tower desulfurization synergistic agent, preparation process is:
(1) hygroscopic agent of using in preparation process, should mix respectively with desulfurizing agent and shower water, mixing rear portion enters and accounts for magnesium chloride total amount ratio in desulfurizing tower together with desulfurizing agent is 2/3, another part sprays into and accounts for magnesium chloride total amount ratio in desulfurizing tower together with shower water is 1/3, and the mass percent of itself and desulfurization product is 1.25%-1.3%.
(2) surfactant of using in preparation process, should first be dissolved in shower water, and the quality proportioning of itself and water is 0.028%-0.031%.
The using method of described humidification type circulating fluidized bed desulfurization tower desulfurization synergistic agent:
(1) MgCl in use using
2mainly, after evenly mixing in proportion with desulfurizing agent as water absorbing agent, to spray in desulfurizing tower together.
(2), after the surfactant of in use using and catalyst are water-soluble, in the situation that solution total amount is constant, at diverse location, spray into tower body at least at twice.
In the present invention, magnesium chloride is good hygroscopicity inorganic salts, has good moisture-absorption water-retention, can make the maintenance of desulfurizing agent long period moistening in desulfurizing tower, reduces gas-solid phase reaction.Sodium alkyl benzene sulfonate can reduce the surface tension of water, makes more easily soluble in water and reactive desulfurizing agent of sulfur dioxide.
Beneficial effect
1, humidification type circulating fluidized bed desulfurization tower desulfurization synergistic agent material of the present invention is easy to get, low price, preparation technology be simple, to environment, can not cause secondary pollution, can improve preferably circulating fluidized bed desulfurization tower desulfuration efficiency.Circulating fluidized bed desulfurization tower desulfuration efficiency when Ca/S is 1.1-1.4 is 90% left and right, and after adding this desulfurization synergistic agent, desulfuration efficiency can reach between 97%-99%.
2, the desulfurization synergistic agent preparing is joined in desulfurizing tower by using method, can promote sulfur dioxide and calcium hydroxide to dissolve, and the forward of reaction carries out, thereby improve desulfuration efficiency.
3, the desulfurizing agent of preparation has good performance.Material used can not cause corrosion to equipment, except bringing into play the function of oneself, does not react with other materials, can not cause unnecessary harm to desulfurizing tower.
Claims (4)
1. a humidification type flue gas circulating fluidized bed desulfurization synergist, its feature comprises following composition: the hygroscopic agent that quality percentage composition is 1.25%-1.3%, quality percentage composition is 0.028%-0.031% surfactant.
2. humidification type flue gas circulating fluidized bed desulfurization tower desulfurization synergistic according to claim 1 agent, is characterized in that described hygroscopic agent is magnesium chloride, and surfactant is sodium alkyl benzene sulfonate.
3. right 1 requires a preparation method for described humidification type flue gas circulating fluidized bed desulfurization tower desulfurization synergistic agent, and preparation process is:
(1) MgCl used in preparation process
2mix respectively with shower water and desulfurizing agent, mix rear portion and enter together with desulfurizing agent that in desulfurizing tower, to account for magnesium chloride total amount ratio be 2/3, another part sprays into and accounts for magnesium chloride total amount ratio in desulfurizing tower together with shower water is 1/3, and the mass percent of itself and desulfurization product is 1.25%-1.3%.
(2) surfactant of using in preparation process, is first dissolved in shower water, and the quality proportioning of itself and water is 0.028%-0.031%.
4. a right 1 requires the using method of described humidification type flue gas circulating fluidized bed desulfurization tower desulfurization synergistic agent:
(1) MgCl in use using
2if after evenly mixing in proportion with desulfurizing agent as water absorbing agent, add in desulfurizing tower together.
(2), after the surfactant in use used is water-soluble, in the situation that solution total amount is constant, at diverse location, spray into tower body at least at twice.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528824.1A CN103537183B (en) | 2013-10-23 | 2013-10-23 | A kind of method of preparation and use of the type flue gas circulating fluidized bed desulfurization synergist that is humidified |
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| CN201310528824.1A CN103537183B (en) | 2013-10-23 | 2013-10-23 | A kind of method of preparation and use of the type flue gas circulating fluidized bed desulfurization synergist that is humidified |
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| CN103537183A true CN103537183A (en) | 2014-01-29 |
| CN103537183B CN103537183B (en) | 2016-09-21 |
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| CN201310528824.1A Expired - Fee Related CN103537183B (en) | 2013-10-23 | 2013-10-23 | A kind of method of preparation and use of the type flue gas circulating fluidized bed desulfurization synergist that is humidified |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498508A (en) * | 2015-12-02 | 2016-04-20 | 湖南省小尹无忌环境能源科技开发有限公司 | Desulfurization method adopting dry-process rotary kiln production line system equipment |
| CN105983328A (en) * | 2015-02-06 | 2016-10-05 | 陕西安得科技实业有限公司 | Desulphurization synergist used for wet desulphurization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1075101A (en) * | 1992-02-05 | 1993-08-11 | 三菱重工业株式会社 | Handle the method for flue gas |
| CN102101011A (en) * | 2010-12-24 | 2011-06-22 | 华电环保系统工程有限公司 | Wet desulphurization method for coal-fired power plant and additive used by same |
-
2013
- 2013-10-23 CN CN201310528824.1A patent/CN103537183B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075101A (en) * | 1992-02-05 | 1993-08-11 | 三菱重工业株式会社 | Handle the method for flue gas |
| CN102101011A (en) * | 2010-12-24 | 2011-06-22 | 华电环保系统工程有限公司 | Wet desulphurization method for coal-fired power plant and additive used by same |
Non-Patent Citations (1)
| Title |
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| 胡金榜等: "添加剂在喷雾干燥脱硫中的应用", 《化学工业与工程》, vol. 23, no. 4, 31 July 2006 (2006-07-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983328A (en) * | 2015-02-06 | 2016-10-05 | 陕西安得科技实业有限公司 | Desulphurization synergist used for wet desulphurization |
| CN105498508A (en) * | 2015-12-02 | 2016-04-20 | 湖南省小尹无忌环境能源科技开发有限公司 | Desulfurization method adopting dry-process rotary kiln production line system equipment |
| CN105498508B (en) * | 2015-12-02 | 2018-07-06 | 湖南省小尹无忌环境能源科技开发有限公司 | A kind of sulfur method equipped using dry-process rotary kiln line production system |
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| CN103537183B (en) | 2016-09-21 |
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