CN202590616U - System for performing desulphurization combustion in thermal power plant by using calcium carbide slurry and coal slurry - Google Patents
System for performing desulphurization combustion in thermal power plant by using calcium carbide slurry and coal slurry Download PDFInfo
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- CN202590616U CN202590616U CN 201220198214 CN201220198214U CN202590616U CN 202590616 U CN202590616 U CN 202590616U CN 201220198214 CN201220198214 CN 201220198214 CN 201220198214 U CN201220198214 U CN 201220198214U CN 202590616 U CN202590616 U CN 202590616U
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Abstract
The utility model discloses a system for performing desulphurization combustion in a thermal power plant by using calcium carbide slurry and coal slurry. The system is characterized by comprising a scraper conveyor, a silo, a prepressing spiral feeding device, a stirring bin, a concentrating pump and a circulating fluidized bed boiler, which are arranged in sequence, wherein the material conveying relation is as follows: a mixture of the calcium carbide slurry and the coal slurry from the scraper conveyor enter the silo, are fed to the stirring bin by the prepressing spiral feeding device and then are fed to the circulating fluidized bed boiler by the concentrating pump. According to the utility model, through sufficiently utilizing the traditional equipment facilities, giving full play to regional resource advantages, creatively utilizing waste calcium carbide slurry of salt and chemical enterprises as a desulfurizing agent, utilizing side products of coal cleaning plants as coal slurry fuels and utilizing the circulating fluidized bed boiler, sulfur fixation efficiency of more than 90%, good sulfur fixation effect, low cost and convenience in use are achieved and a purpose of controlling waste by waste is also achieved.
Description
Technical field
The utility model relates to the thermal power plant boiler flue gas desulfurization technique, especially utilizes calcium carbide mud and coal slime in steam power plant, to carry out the system of desulfurizing combustion.
Background technology
Sulfur dioxide (SO
2) be one of main atmosphere pollution, coal-fired power plant is SO
2The discharging rich and influential family.By the end of the year 2010,7.07 hundred million kilowatts of national thermoelectricity power installed capacitys account for 73% of total installation of generating capacity, consume coal-fired 1,600,000,000 tons.And the sulfur dioxide of thermoelectricity and nitrogen oxide emission account for more than 40% of national discharge capacity.Along with the more and more attention of country to efforts at environmental protection, coal-fired power plant has also had very big development to the boiler flue gas desulfurization Study on Technology with using.At present, the desulfur technology of comparative maturity has and adds the outer two alkaline process of lime stone, in-furnace calcium spraying, stove, outer lime stone--the technology such as-gypsum wet desulfurization of stove in the stove.From initial stage equipment investment, desulfurized effect and aspect analysis-by-synthesis such as operating cost and offal treatment, all there is certain deficiency in these technology: otherwise the desulfurizing agent expense is higher, or the byproduct for treatment difficulty.
Calcium carbide mud is the waste products of chemical enterprises, and main component is a calcium hydroxide, can be used as desulfurizing agent; Coal slime is the byproduct of coal washery, can be used as fuel, if act as a fuel with coal slime, as desulfurizing agent, just can improve the boiler flue gas desulfurization effect of coal-fired power plant with calcium carbide mud greatly.
The utility model content
Existing thermal power plant boiler flue gas desulfurization technique cost is high in order to overcome, the byproduct for treatment difficult technologies is asked the desulfurizing combustion system that calcium carbide mud and coal slime are used for steam power plant.
For achieving the above object; The utility model desulfurizing combustion system comprises drag conveyor, feed bin, preload screw charging gear, stir storehouse, Concentrated material pump and the CFBB of arranging successively; The mass transport relation is: the calcium carbide mud and the coal slime mixture that come from drag conveyor get into feed bin; Deliver to stir storehouse by the preload screw charging gear, deliver to CFBB by Concentrated material pump again.
Utilize the utility model system method of desulfurizing combustion in steam power plant to be: the calcium carbide mud discarded object that utilizes salinization manufacturing enterprise is as the desulphurization reaction agent; With the coal slime carrier that acts as a fuel; The boiler of steam power plant is changed to CFBB; Carry coal slime calcium carbide mud mixing desulfurization to starch top to the CFBB with the coal slime stock pump as power source,, carry out the stove internal combustion desulphurization reaction first time in the detonation of siege middle and upper part; At back-end ductwork, about cigarette temperature drop to 130 degree, because smoke moisture increases, unreacted is the desulfurizing agent secondary response completely, has improved desulfurized effect greatly.
The utility model has the advantages that:
1, make full use of the existing equipment facility, performance region resources advantage, creatively the discarded calcium carbide mud of used salt chemical enterprise is as desulfurizing agent; With the byproduct coal slurry fuel of coal washery, adopt CFBB, make solid sulphur efficiency more than 90%; Captured sulfur result is good, and is cheap, easy to use; Reach the purpose of the treatment of wastes with processes of wastes against one another, especially be applicable to the near coal-mine comprehensive utilization of resources of middle and small scale coal mine power station, through test; Desulfuration efficiency can reach more than 90%, satisfies country's < < thermal power plant's atmosphere pollutants emission standards>> (GB 13223-2011) emission request.
2, desulfuration in furnace reaction fully and afterbody secondary response in CFBB can be carried sulfur in boiler warm sludge and the flue dust to more than 10%; Accessory substance behind the desulfurizing combustion can be used as finished cement and mixes the interpolation material, substitutes the mass ratio of original product 20%, can the cement net profit be increased by 20%, overcome the defective of existing thermal power plant boiler flue gas desulfurization technique accessory substance difficult treatment
Description of drawings
Fig. 1 is the structural plan of the utility model.
Among the figure: 1-drag conveyor, 2-feed bin, 3-preload screw charging gear, 4-stir storehouse, 5-Concentrated material pump, 6-CFBB.
The specific embodiment
Further specify the arrangement of the utility model below according to accompanying drawing.
As shown in Figure 1; With calcium carbide mud, coal slime on request ratio get into feed bin 2 through drag conveyor 1; Tentatively stir blending at feed bin 2, deliver to stir storehouse 4 by preload screw charging gear 3 behind the mixing, material obtains stirring once more in stir storehouse 4; Deliver in the CFBB 6 by Concentrated material pump 5 then and mix detonation, reach the effect of desulfurization.
The preload screw charging gear of the utility model is existing commercially available equipment.
Claims (1)
1. calcium carbide mud and coal slime are used for the desulfurizing combustion system of steam power plant; It is characterized in that; It comprises drag conveyor, feed bin, preload screw charging gear, stir storehouse, Concentrated material pump and the CFBB of arranging successively; The mass transport relation is: the calcium carbide mud and the coal slime mixture that come from drag conveyor get into feed bin, deliver to stir storehouse by the preload screw charging gear, deliver to CFBB by Concentrated material pump again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198214 CN202590616U (en) | 2012-05-05 | 2012-05-05 | System for performing desulphurization combustion in thermal power plant by using calcium carbide slurry and coal slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198214 CN202590616U (en) | 2012-05-05 | 2012-05-05 | System for performing desulphurization combustion in thermal power plant by using calcium carbide slurry and coal slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202590616U true CN202590616U (en) | 2012-12-12 |
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ID=47308198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220198214 Expired - Fee Related CN202590616U (en) | 2012-05-05 | 2012-05-05 | System for performing desulphurization combustion in thermal power plant by using calcium carbide slurry and coal slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202590616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658024A (en) * | 2012-05-05 | 2012-09-12 | 新汶矿业集团有限责任公司华丰煤矿 | Desulfurization and combustion method using calcium carbide slurry and coal slurry in thermal power plant |
| CN104791781A (en) * | 2015-01-28 | 2015-07-22 | 镇江纽普兰气力输送有限公司 | Mechanical boiler bed material adding system |
-
2012
- 2012-05-05 CN CN 201220198214 patent/CN202590616U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658024A (en) * | 2012-05-05 | 2012-09-12 | 新汶矿业集团有限责任公司华丰煤矿 | Desulfurization and combustion method using calcium carbide slurry and coal slurry in thermal power plant |
| CN104791781A (en) * | 2015-01-28 | 2015-07-22 | 镇江纽普兰气力输送有限公司 | Mechanical boiler bed material adding system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20150505 |
|
| EXPY | Termination of patent right or utility model |