Method for producing coal gasification formed coke
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A manufacturing method and technology of coal gasification, which are used in coke ovens, special forms of dry distillation, petroleum industry, etc., can solve the problems of low heat and cold strength of finished products, inability to continuous assembly line production, and low production efficiency.
Inactive Publication Date: 2009-05-27
福建龙耀煤业科技有限公司
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Problems solved by technology
[0005] ①Using quicklime as raw material, it is first fired into calcium oxide by ash kiln, and then calcium hydroxide is made into calcium hydroxide as a binder by adding water, which is costly;
[0006] ②The carbonization time in the carbonization tank is at least 24 hours, the process is com
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Embodiment 1
[0022] 1. Take 77kg of anthracite coal, 8kg of 1 / 3 coking coal, 10kg of fat coal, and 5kg of graphite, and grind them to raw coal powder with a particle size of less than 2mm;
[0023] 2. Take 0.3kg of the mixture of hydrochloric acid and sodium hydroxide, 7kg of polyvinyl alcohol modified solution, 8kg of weathered coal, and 2kg of high-alumina powder, mix evenly, and prepare a composite binder;
[0024] 3. After mixing the pulverized coal and the composite binder, age and stack retting for 6-20 hours for later use;
[0025] 4. Send the aged coal powder into the forming machine at room temperature to press the formed coal, the pressure is 30-40Mpa;
[0026] 5. Send the prepared briquettes into a carbonization furnace for 10-30 minutes of medium-temperature carbonization at a temperature of 110-120°C, and then carbonize at 950-1100°C for 6 hours without oxygen to make briquettes.
[0027] The finished coke specifications and parameters are as follows:
[0028] proje...
Embodiment 3
[0037] 1. Take 90kg of anthracite coal, 2kg of 1 / 3 coking coal, 6kg of fat coal, and 2kg of graphite, and grind them into raw coal powder with a particle size of less than 2mm;
[0038] 2. Take 1kg of the mixture of hydrochloric acid and sodium hydroxide, 10kg of polyvinyl alcohol modified solution, 6kg of weathered coal, and 1kg of high-alumina powder, mix evenly, and prepare a composite binder;
[0039] 3. After the pulverized coal is mixed with the composite binder, it is aged and stacked for 6-20 hours for later use;
[0040] 4. Send the aged coal powder into the forming machine at room temperature to press the formed coal, the pressure is 30-40Mpa;
[0041] 5. Send the prepared briquettes into a carbonization furnace for 10-30 minutes of medium-temperature carbonization at a temperature of 110-120°C, and then carbonize at 950-1100°C for 8 hours without oxygen to make briquettes.
[0042] The finished coke specifications and parameters are as follows:
[0043] p...
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Abstract
The invention relates to a method for manufacturing coal gasification type coke. Blind coal is used as a main material, is added with a caking agent and is pressurized to form type coal; the type coal is subjected to middle-temperature carbonization and high-temperature oxygen-isolated carbonization to manufacture type coke, wherein raw material coal comprises 75 to 90 percent of blind coal, 3 to 10 percent of one-third coking coal, 5 to 12 percent of fat coal and 2 to 10 percent of graphite; the composite caking agent is made from a mixture of hydrochloric acid and sodium hydroxide accounting for 0.1 to 0.5 percent of the weight pulverized coal, a polyvinyl alcohol modified solution accounting for 7 to 10 percent of the weight the pulverized coal, weathered coal accounting for 5 to 10 percent of the weight the pulverized coal and high aluminium powder accounting for 0.5 to 3 percent of the weight the pulverized coal according to proportion. The manufactured product has high fixed carbon and high heating power, can substitute for the blind coal or the coke to produce water gas, does not need to make any reconstruction on the prior gas generating furnace, can reduce the production cost of the water gas, improve the economic value of the pulverized coal of the blind coal, can be widely applied to fertilizer, metallurgy, building materials and other industries, and has good market application prospect.
Description
technical field [0001] The invention relates to a method for producing coal-shaped coke, in particular to a method for producing coal-shaped coke with anthracite as the main raw material. Background technique [0002] Coal is the main source of energy in our country. Coke or lump coal is mostly used as coal gasification material in the production of metallurgy, chemical fertilizer, calcium carbide industry and other industries. Due to the low yield of mechanized mining of lump coal, coupled with the banning of small coal kilns and the rise of coal prices and freight costs, the cost of lump coal has increased, and a large amount of pulverized coal can only be treated as low-grade fuel. Coal deep-processing products with high content and high added value are particularly urgent. [0003] At present, the process of processing pulverized coal as raw material for coal gasification is as follows: raw coal is crushed into coal powder → quicklime is fired into calcium oxide through...
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Application Information
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