CN1155575A - Production of catalytic desulfurizing agent for coal - Google Patents
Production of catalytic desulfurizing agent for coal Download PDFInfo
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- CN1155575A CN1155575A CN 96109822 CN96109822A CN1155575A CN 1155575 A CN1155575 A CN 1155575A CN 96109822 CN96109822 CN 96109822 CN 96109822 A CN96109822 A CN 96109822A CN 1155575 A CN1155575 A CN 1155575A
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Abstract
A process for producing catalytic sweetening agent for fuel coal features that the sweetening agent is prepared from more than 10 raw chemical materials such as catalyst, sweetening agent, clarifier, loosening agent, etc through crushing,heating to 200 deg.C, keeping the temp constant for 10 hr and stirring. The sweetening agent can reduce the pollution of coal smoke.
Description
The invention relates to coal treatment, in particular to a production method of a coal catalytic desulfurizer.
The energy of China is mainly coal, the heat generated by the combustion of the coal converts chemical energy into heat energy and simultaneously generates a large amount of pollutants, so that the severity and the long-term property of coal smoke type air pollution of China are caused, according to statistics of relevant departments, more than 70% -90% of dust and sulfur dioxide discharged to the atmospheric environment in cities come from burning coal respectively, and meanwhile, the defects of serious waste, low thermal efficiency, single variety, difficult ignition, slow ignition, low thermal efficiency, large pollution and the like in the utilization of coal carbon in China are overcome, so that the clean combustion of the coal is an important subject for research and attack of scientists in the field of coal chemistry.
The invention aims to: aiming at the problems, the production method of the coal catalytic desulfurizer used in the coal deep processing is provided.
The purpose of the invention is realized as follows: the production method of coal-fired catalytic desulfurizing agent is mainly formed by processing and reacting more than ten chemical raw materials of catalyst, desulfurizing agent, cleaning agent and loosening agent, and is characterized by that: the weight ratio of the raw materials required for producing one ton of the catalytic desulfurization agent is as follows:
30 to 40 percent of slag, 30 to 40 percent of lime, 1 to 3 percent of ferric oxide, 2 to 3 percent of barium chloride, 3 to 5 percent of calcium nitrate, 2 to 3 percent of magnesium chloride, 1 to 2 percent of lithium carbonate, 2 to 4 percent of barium nitrate, 5 to 8 percent of sodium nitrate, 2 to 4 percent of sodium hydroxide, 2 to 4 percent of light calcium carbonate, 0.2 to 0.3 percent of potassium permanganate and 5 to 8 percent of industrial salt
The raw materials are crushed, heated to 200 ℃, kept warm for 10 hours, stirred uniformly to be black and gray powder, and then tested and bagged.
The invention has the advantages that: the developed coal-fired catalyst is added into coal in a trace amount, so that the main pollutants such as sulfur dioxide, smoke dust, NoX and the like discharged to the air by the coal can be reduced while the coal is saved and the consumption is reduced, and the method has obvious practical significance on 'soot type air pollution' in China.
The basic principle of the invention is as follows: the coal catalytic desulfurizer is mainly prepared by processing and reacting more than ten chemical raw materials such as a catalyst, a desulfurizer, a purifying agent and the like, is based on coal catalysis, reasonably and scientifically reduces the ignition point of coal according to catalysts with different functions required by low temperature, medium temperature and high temperature sections in a coal burning process, accelerates the combustion progress of the coal, improves the temperature of a hearth, strengthens a heat transfer process, and further improves the output of a boiler.
The loosening agent can improve ventilation and air permeability, promote raw coal to be burnt and burnt out, decompose, gasify and explode at high temperature, stir gas in coal seams and coal seams, loosen hardened coal seams, improve air permeability, ensure uniform distribution of oxygen in the coal seams and sufficient supply, and create conditions for quick combustion and full combustion.
The cleaning agent has the functions of fixing and dredging, deodorizing and removing soot and scale on the surface of the boiler, can make slag bonding matters porous and loose, weaken the binding force between coke and a contact surface and make the coke slag easy to pulverize and remove.
The purifying agent and the catalyst can promote carbon monoxide and sulfur dioxide in coal to generate exothermic reaction, and sulfur generated in the reaction is changed into sulfur dioxide through combustion and then is oxidized into sulfur trioxide through the catalyst, and finally, the sulfur can be fixed by second-order alkali metals such as magnesium, barium and other alkaline oxides in the purifying agent to generate slag with higher melting point to play a role in sulfur fixation. Namely:
the invention is further illustrated by the following production methods and examples:
the production method of coal-fired catalytic desulfurizing agent is mainly formed by processing and reacting more than ten chemical raw materials of catalyst, desulfurizing agent, cleaning agent and loosening agent, and is characterized by that: the weight ratio of the raw materials required for producing one ton of the catalytic desulfurization agent is as follows: 30 to 40 percent of slag, 30 to 40 percent of lime, 1 to 3 percent of ferric oxide, 2 to 3 percent of barium chloride, 3 to 5 percent of calcium nitrate, 2 to 3 percent of magnesium chloride, 1 to 2 percent of lithium carbonate, 2 to 4 percent of barium nitrate, 5 to 8 percent of sodium nitrate, 2 to 4 percent of sodium hydroxide, 2 to 4 percent of light calcium carbonate, 0.2 to 0.3 percent of potassium permanganate and 5 to 8 percent of industrial salt
The raw materials are crushed, heated to 200 ℃, kept warm for 10 hours, stirred uniformly to form black and gray powder, and then tested and bagged.
The catalyst mainly comprises the following components: sodium nitrate, lithium carbonate, barium nitrate, potassium permanganate, furnace slag, ferric oxide and industrial salt.
The desulfurizing agent mainly comprises the following components: calcium carbonate, lime, barium chloride and magnesium chloride.
The purifying agent mainly comprises the following components: lime, light calcium carbonate and magnesium chloride.
The loosening agent comprises the following main components: barium chloride, magnesium chloride, sodium hydroxide, furnace slag and industrial salt.
The effect of these feedstock additions on the coal combustion has been explained in the basic principle of the invention and is not repeated.
The product of the invention is widely used for burning coal in a manual furnace, a chain furnace, a coal throwing machine furnace and a reciprocating vibration furnace, is not suitable for burning a fluidized bed furnace and a pulverized coal furnace, has the best using effect on industrial and civil molded coal, and has particularly obvious effect when being used for boilers with poor working conditions and boilers burning inferior coal.
Example 1: when one ton of catalytic desulfurization agent is produced, the required weight ratio of the raw materials is as follows: slag 35%, lime 34%, ferric oxide, 2%, sodium nitrate, 6%, barium chloride, 2%, sodium hydroxide, 3.8%, magnesium chloride, 2%, light calcium carbonate, 3%, calcium nitrate, 4%, lithium carbonate, 1%, barium nitrate, 2%, potassium permanganate, 0.2%, industrial salt, 5%
Is most preferred.
The raw materials are crushed, heated to 200 ℃, kept warm for 10 hours, stirred uniformly to form black and gray powder, sampled and tested to be qualified, and then packed into a bag for standby.
When the coal is used in boilers or molded coal, the addition amount is controlled to be 3 percent, the high-quality coal can be reduced by 1 percent, and the low-quality coal can be increased by 1 percent. After water is dissolved, the water is sprayed into coal, the effect is best, the solid is convenient to dry and scatter, but a proper amount of water needs to be added into the coal to keep the water content in the coal between 8 and 12 percent, the water does not lose efficacy when being mixed into the coal in advance, but rain is prevented, the product is easy to agglomerate after being placed for a long time, the quality is not influenced, moisture resistance is paid attention when the product is transported and stored, and the product is not easy to stack with flammable and explosive objects.
The test results of the present invention are as follows: 1. the heat efficiency of the boiler operation can be improved by about 10 times; 2. the coal saving rate is between 8 and 30 percent, the coal saving effect on boilers and burning inferior coal with poor burning conditions is higher. 3. The temperature of the hearth can be increased to 50-150 ℃; 4. the carbon content of the slag is obviously reduced and is generally 10 to 22 percent; 5. the blackness of the flue gas and the emission of harmful gases are reduced by 25 to 45 percent, the sulfur dioxide is reduced by 30 to 48 percent, and the nitrogen oxide is reduced by 15 to 25 percent.
Claims (6)
1. The production method of coal catalytic desulfurizer is mainly formed by processing and reacting more than ten chemical raw materials of catalyst, desulfurizer, cleaning agent, loosening agent, etc., and is characterized by that: the weight ratio of the raw materials required for producing one ton of the catalytic desulfurization agent is as follows: 30 to 40 percent of slag, 30 to 40 percent of lime, 1 to 3 percent of ferric oxide, 2 to 3 percent of barium chloride, 3 to 5 percent of calcium nitrate, 2 to 3 percent of magnesium chloride, 1 to 2 percent of lithium carbonate, 2 to 4 percent of barium nitrate, 5 to 8 percent of sodium nitrate, 2 to 4 percent of sodium hydroxide, 2 to 4 percent of light calcium carbonate, 0.2 to 0.3 percent of potassium permanganate and 5 to 8 percent of industrial salt
The raw materials are crushed, heated to 200 ℃, kept warm for 10 hours, stirred uniformly to be black and gray powder, and then tested and bagged.
2. The production method of the coal-fired catalytic desulfurization agent according to claim 1, characterized in that: the catalyst mainly comprises the following components: sodium nitrate, lithium carbonate, barium nitrate, potassium permanganate, furnace slag, ferric oxide and industrial salt.
3. The production method of the coal-fired catalytic desulfurization agent according to claim 1, characterized in that: the desulfurizing agent mainly comprises the following components: calcium carbonate, lime, barium chloride and magnesium chloride.
4. The production method of the coal-fired catalytic desulfurization agent according to claim 1, characterized in that: the purifying agent mainly comprises the following components: lime, light calcium carbonate and magnesium chloride.
5. The production method of the coal-fired catalytic desulfurization agent according to claim 1, characterized in that: the loosening agent comprises the following main components: barium chloride, magnesium chloride, sodium hydroxide, furnace slag and industrial salt.
6. The production method of the coal-fired catalytic desulfurization agent according to claim 1, characterized in that: when one ton of catalytic desulfurization agent is produced, the required weight ratio of the raw materials is as follows: slag 35%, lime 34%, ferric oxide, 2%, sodium nitrate, 6%, barium chloride, 2%, sodium hydroxide, 3.8%, magnesium chloride, 2%, light calcium carbonate, 3%, calcium nitrate, 4%, lithium carbonate, 1%, barium nitrate, 2%, potassium permanganate, 0.2%, industrial salt, 5%
Is most preferred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109822 CN1155575A (en) | 1996-09-18 | 1996-09-18 | Production of catalytic desulfurizing agent for coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109822 CN1155575A (en) | 1996-09-18 | 1996-09-18 | Production of catalytic desulfurizing agent for coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1155575A true CN1155575A (en) | 1997-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96109822 Pending CN1155575A (en) | 1996-09-18 | 1996-09-18 | Production of catalytic desulfurizing agent for coal |
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| CN (1) | CN1155575A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972595A (en) * | 2010-10-22 | 2011-02-16 | 上海交通大学 | Method for implementing magnesium-ammonia combined flue gas desulfuration and decarbonization and by-product recovery |
| CN102453577A (en) * | 2011-09-21 | 2012-05-16 | 李国庆 | Novel slime compound fuel and its preparation method |
| CN102533387A (en) * | 2011-12-26 | 2012-07-04 | 窦崇庆 | Fire coal desulfurization and denitrification decoking additive and preparation process thereof |
-
1996
- 1996-09-18 CN CN 96109822 patent/CN1155575A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972595A (en) * | 2010-10-22 | 2011-02-16 | 上海交通大学 | Method for implementing magnesium-ammonia combined flue gas desulfuration and decarbonization and by-product recovery |
| CN102453577A (en) * | 2011-09-21 | 2012-05-16 | 李国庆 | Novel slime compound fuel and its preparation method |
| CN102533387A (en) * | 2011-12-26 | 2012-07-04 | 窦崇庆 | Fire coal desulfurization and denitrification decoking additive and preparation process thereof |
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| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |