CN1298820C - Nano-catalytic desulfurzing energy saving combustion improver and producing method thereof - Google Patents
Nano-catalytic desulfurzing energy saving combustion improver and producing method thereof Download PDFInfo
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- CN1298820C CN1298820C CNB021167583A CN02116758A CN1298820C CN 1298820 C CN1298820 C CN 1298820C CN B021167583 A CNB021167583 A CN B021167583A CN 02116758 A CN02116758 A CN 02116758A CN 1298820 C CN1298820 C CN 1298820C
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Abstract
The present invention relates to a nanometer catalytic desulfurizing energy saving combustion improver which comprises the components with the following weight percentage: 0.3 to 10% of nanometer catalysts, 5 to 10% of accelerating agents, 50 to 70% of sulfur fixing agents and 25 to 30% of combustion improving and coking removal agents. A producing method comprises the following steps: the components are respectively prepared according to the weight percentage; then, the accelerating agents, the sulfur fixing agents and the combustion improving and coking removal agents are respectively pulverized and ground at normal temperature and are uniformly mixed with the nanometer catalysts at the normal temperature. The product can greatly promote the combustion of coal, raise the heat efficiency of a boiler and remove sulfur dioxide and nitrogen oxide in fume. Fly ash generated after coal added with the product is combusted can be used as the filling material of cement. The nanometer catalytic desulfurizing energy saving combustion improver can prolong the service life of a coal-fired boiler and reduce the discharge of the fly ash, and the nanometer catalytic desulfurizing energy saving combustion improver is suitable for various coal-fired boilers.
Description
Technical Field
The invention relates to a nano catalytic desulfurization combustion-supporting energy-saving agent and a preparation method thereof.
Background
The existing desulfurization energy-saving technology for coal burning of industrial and civil boilers mostly adopts chemical products or physical means to realize the purposes of combustion supporting and desulfurization, but has the defects that: the desulfurization rate is low, generally below 45%; the utilization rate of the by-products is low, so that the popularization is difficult.
The application of nanotechnology, one of the most advanced technologies in the world today, is gaining more and more popularity, and by using the technology, some compounds can generate specific performance in a nanometer state, thereby serving industrial production and civil life.
Disclosure of Invention
The invention aims to provide a nano catalytic desulfurization combustion-supporting energy-saving agent and a manufacturing method thereof, which adopt advanced nano technology and utilize the specific performance generated by a compound in a nano state to realize the aim of desulfurization combustion-supporting of coal.
In order to achieve the purpose, the utility model adopts the following design scheme: the nano catalytic desulfurization combustion-supporting energy-saving agent contains 0.3-10% of nano catalyst, 5-10% of accelerator, 50-70% of sulfur-fixing agent and 25-30% of combustion-supporting decoking agent by weight.
The preparation method of the nano catalytic desulfurization combustion-supporting energy-saving agent comprises the following steps:
1) preparing materials according to the weight percentage of each component;
2) respectively crushing and grinding the accelerant, the sulfur-fixing agent and the combustion-supporting decoking agent at normal temperature, and collecting;
3) mixing with nanometer catalyst at normal temperature;
4) and (6) packaging a finished product.
The nano catalyst is formed by mixing calcium chloride with nano granularity and nano cobalt titanate, and the weight percentages of the calcium chloride and the nano cobalt titanate are respectively 75% and 25%.
The accelerant is calcium fluoride.
The sulfur-fixing agent is formed by mixing 90% of calcium oxide and 10% of barium carbonate.
The combustion-supporting decoking agent is sodium chloride and calcium chloride, and the weight percentage of the combustion-supporting decoking agent is 60 percent of sodium chloride and 40 percent of calcium chloride.
The invention has the advantages that: the product can promote the combustion of coal, raise the heat efficiency of boiler and eliminate sulfur dioxide and nitrogen oxide from fume. The fly ash generated after the coal added with the product is combusted can be used as a filler of cement; and the service life of the coal-fired boiler can be prolonged, and the dust discharge capacity is reduced.
Detailed Description
Example 1: the high-sulfur coal is prepared according to the following component proportions
0.3kg of nano-grade particle size calcium chloride
0.1kg of nano-grade cobalt titanate
5kg of calcium fluoride
68kg of calcium oxide
6kg of barium carbonate
17kg of sodium chloride
9kg of calcium chloride
Respectively crushing and grinding calcium fluoride, calcium oxide, barium carbonate, sodium chloride and calcium chloride to 300 meshes at normal temperature, and collecting for later use. Then mixing the nano-sized calcium chloride and the nano-sized cobalt titanate which are used as the nano-catalyst according to the proportion, and then uniformly mixing at normal temperature; and (6) packaging a finished product.
When in use, the desulfurization rate reaches 70-80% under the action of the nano catalyst, and the utilization rate of the fly ash as the cement filler reaches 100%.
Example 2: the raw materials for inferior high-calcium coal are prepared according to the following component proportions
28kg of nano-grade particle size calcium chloride
Nanometer cobalt titanate 9kg
Calcium fluoride 8kg
54kg of calcium oxide
6kg of barium carbonate
12kg of sodium chloride
Calcium chloride 8kg
The procedure was as described in example 1.
When in use, under the action of the nano catalyst, sulfur and calcium oxide are fully combined in the inferior coal, so that the desulfurization rate reaches 70-85%, the fly ash can be used as a substitute of cement clinker, and the utilization rate reaches 100%.
The nano catalyst in the formula in each embodiment is formed by mixing calcium chloride with nano-scale particle size and cobalt titanate with nano-scale particle size, and the calcium chloride with nano-scale particle size and the cobalt titanate with nano-scale particle size can be directly selected from products produced by Shanghai silicate research institute of Chinese academy of sciences or nanometer science and technology company of Changchun Orient.
In order to reduce the cost, the calcium oxide can be replaced by partial calcium hydroxide and calcium carbonate, and the replacement proportion is not more than 40 percent of the using amount of the calcium oxide.
The nano catalytic desulfurization combustion-supporting energy-saving agent (NHS) produced by the invention has stronger functions of desulfurization, combustion supporting, energy saving and waste utilization. The NHS developed by the invention is added into the fire coal in a small amount, so that the coal consumption is saved, the main pollutants such as sulfur dioxide, smoke dust, nitrogen oxide and the like discharged from the air of the fire coal are reduced, and the waste after the coal is combusted can be used as part of the filler of the cement to realize waste utilization. The method has remarkable social and economic benefits for treating the soot type atmospheric pollution in China.
The basic principle of the invention is as follows: the NHS is mainly processed by chemical raw materials such as a nano catalyst, a sulfur fixing agent, a combustion-supporting decoking agent and the like, takes fire coal as a main material, scientifically reduces the ignition point of the coal according to the requirement of catalysts with different functions, accelerators and combustion-supporting decoking agents at low temperature, medium temperature and high temperature in the fire coal process, accelerates the combustion of the coal, improves the edge temperature of a hearth, enables the coal to be fully combusted, and reduces the carbon content and suspended particles in coal ash. The sulfur-fixing agent can promote the exothermic reaction between carbon monoxide and sulfur dioxide in coal, and the sulfur-fixing agent has special stability at 1300 ℃ or higher due to other alkaline oxides such as bivalent alkali metal barium and the like in the reaction, thereby playing a role in sulfur fixation and ensuring higher desulfurization rate.
The reaction is as follows:
the method for using the combustion improver produced by the invention is that NHS can be directly and manually blended with fire coal uniformly, and 50Kg of NHS is mixed in 1000Kg of coal. If the utilization of the by-products is considered, the coal can be mixed and added with a larger proportion of NHS according to different coal qualities, and the mixture can be used after being added with 10 percent of NHS and ball-milled and mixed evenly, and is suitable for various coal-fired cyclone furnaces, pulverized coal furnaces, fluidized bed furnaces, heating furnaces, dense furnaces and the like.
The invention is simple and practical, and the experimental comparison proves that the coal can be saved by 8-15% due to the improvement of the combustion value and the full combustion, and the effect is more obvious especially on the inferior high-calcium coal; because of the outstanding sulfur-fixing and desulfurizing effect, the desulfurizing rate can be over 60 percent, and part of high-sulfur coal can reach over 75 percent, and the low-sulfur coal boiler can replace a desulfurizing device thereof, thereby achieving the purposes of reducing the cost and improving the benefit.
The present invention is also a comprehensive utilization technology of waste, the ash produced by burning coal can be used as a filler for cement production after being crushed and modified, and the addition amount of the high-quality filler can reach more than 50%. The method has great significance for reducing the production cost, improving the economic benefit, improving the ecological environment and promoting the environmental protection.
Claims (2)
1. A nanometer catalytic desulfurization combustion-supporting energy-saving agent is characterized in that:
the catalyst contains nano catalyst, promoter, sulfur-fixing agent and combustion-supporting decoking agent, and the weight percentage of each component is 0.3-10% of nano catalyst, 5-10% of promoter, 50-70% of sulfur-fixing agent and 25-30% of combustion-supporting decoking agent;
the nano catalyst is formed by mixing calcium chloride with nano granularity and nano cobalt titanate, wherein the weight percentages of the calcium chloride and the nano cobalt titanate are respectively 75% and 25%;
the accelerant is calcium fluoride;
the sulfur-fixing agent is formed by mixing 90% of calcium oxide and 10% of barium carbonate by weight percent;
the combustion-supporting decoking agent is sodium chloride and calcium chloride, and the weight percentage of the combustion-supporting decoking agent is 60 percent of sodium chloride and 40 percent of calcium chloride.
2. A method for preparing a nano catalytic desulfurization combustion-supporting energy-saving agent is characterized by comprising the following steps:
1) preparing materials according to the weight percentage of each component;
2) respectively crushing and grinding the accelerant, the sulfur-fixing agent and the combustion-supporting decoking agent at normal temperature, and collecting;
3) mixing with nanometer catalyst at normal temperature;
4) and (6) packaging a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021167583A CN1298820C (en) | 2002-05-09 | 2002-05-09 | Nano-catalytic desulfurzing energy saving combustion improver and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021167583A CN1298820C (en) | 2002-05-09 | 2002-05-09 | Nano-catalytic desulfurzing energy saving combustion improver and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN1456645A CN1456645A (en) | 2003-11-19 |
| CN1298820C true CN1298820C (en) | 2007-02-07 |
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| CNB021167583A Expired - Fee Related CN1298820C (en) | 2002-05-09 | 2002-05-09 | Nano-catalytic desulfurzing energy saving combustion improver and producing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059992A (en) * | 2017-11-15 | 2018-05-22 | 绵阳双甘科技有限公司 | A kind of ENERGY-SAVING AGENT FOR and its manufacturing method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775325B (en) * | 2009-01-14 | 2012-12-19 | 张保森 | Coal composite sulfur fixing agent |
| CN108641777A (en) * | 2018-04-04 | 2018-10-12 | 江苏大学 | A kind of method that well salt production by-product nanometer salt slurry compound is used for fired coal combustion desulfurization |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169463A (en) * | 1996-06-28 | 1998-01-07 | 王保行 | High-efficieney pollution-reducing and coal-saving agent |
| CN1345918A (en) * | 2000-09-30 | 2002-04-24 | 宋伟国 | Briquette containing combustion synergist and making method thereof |
| CN1363647A (en) * | 2002-01-28 | 2002-08-14 | 柳永坦 | Adsorption process of desulfurizing liquefied petroleum gas used for car |
| CN1379079A (en) * | 2001-04-02 | 2002-11-13 | 郑连生 | Nano combustion promoter for diesel oil and its preparing process |
-
2002
- 2002-05-09 CN CNB021167583A patent/CN1298820C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169463A (en) * | 1996-06-28 | 1998-01-07 | 王保行 | High-efficieney pollution-reducing and coal-saving agent |
| CN1345918A (en) * | 2000-09-30 | 2002-04-24 | 宋伟国 | Briquette containing combustion synergist and making method thereof |
| CN1379079A (en) * | 2001-04-02 | 2002-11-13 | 郑连生 | Nano combustion promoter for diesel oil and its preparing process |
| CN1363647A (en) * | 2002-01-28 | 2002-08-14 | 柳永坦 | Adsorption process of desulfurizing liquefied petroleum gas used for car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059992A (en) * | 2017-11-15 | 2018-05-22 | 绵阳双甘科技有限公司 | A kind of ENERGY-SAVING AGENT FOR and its manufacturing method |
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| CN1456645A (en) | 2003-11-19 |
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Granted publication date: 20070207 Termination date: 20140509 |