Technology for production of semicoke from powdery long flame coal
A production process and technology of long-flame coal, which is applied in coking ovens, petroleum industry, special forms of dry distillation, etc., can solve the problems of poor air permeability of powdery long-flame coal, backlog of funds, low efficiency, etc., and achieve mechanical strength enhancement, The effect of increasing transportation capacity and expanding production scale
Inactive Publication Date: 2014-10-15
严铂鑫
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[0002] Most of the massive long-flame coal in China can be made into semi-coke through dry distillation, which is widely used in submerged arc furnaces, ferroalloy, yellow phosphorus, calcium carbide smelting, coal-to-gas and various furnace combustion, but a large amount of powdery long-flame coal is Due to poor air permeability, dry distillation cannot be carried out smoothly, resulting in more and more backlogs, which not only brings backlogs of funds and low benefits to enterprises, but also causes great pollution to the local environment. Therefore, it is made of powdered long-flame coal. Semi-coke can not only expand the utilization field of powdered long-flame coal, but also reduce the backlog of funds and environmental protection pressure of powdered long-flame coal, which is very necessary for the rational use of coal resources
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[0019] After the long-flame coal is screened, the pulverized coal with a particle size of <5mm enters the long-flame coal crusher, and the pulverized coal is hit to the crushing plate by the high-speed rotating hammer, and is crushed to ≤1mm before being sent to the powdery long-flame coal silo; The viscous bituminous coal enters the viscous bituminous coal crusher, is hit by the high-speed rotating hammer head to the crushing plate, is crushed to ≤1mm, and then sent to the powdery viscous bituminous coal silo; Carry out purification and recovery; the feeder configured under the silo sends powdered long-flame coal and powdered viscous bituminous coal into the mixing mixer in a certain proportion and stirs evenly, and then sends them into the high-pressure briquetting machine with a heating device at 50-95°C , the line pressure of the high-pressure briquette machine to press the pulverized coal is 80-100KN / cm, and the pulverized coal is briquetted by high-pressure balls in the p...
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Abstract
The invention provides a technology for production of semicoke from powdery long flame coal. The technology includes: mixing and stirring the powdery long flame coal with powdery viscous soft coal according to certain proportion, employing a heating device equipped high pressure ball press machine to press the uniformly mixed powdery coal into pellets of certain size, then sending the pellets into a fast carbonizing machine to undergo fast carbonization at 500-700DEG C for 2-4h, and then performing cooling by a cooling belt machine to obtain high strength waterproof semicoke that has cold strength of more than or equal to 500N / ball and hot strength of more than or equal to 500N / ball, and is not undispersed after soaking in water for a lot of days, thereby satisfying long distance transportation. The technology is applicable to submerged arc furnace, iron alloy, yellow phosphorus, calcium carbide smelting and a variety of kiln combustion and coal chemical gas production, and is conducive to large-scale use of powdery long flame coal to produce semicoke so as to achieve good economic benefits.
Description
technical field [0001] The invention relates to the technical field of producing semi-coke from powdery long-flame coal, in particular to a production process for producing semi-coke from powdery long-flame coal. Background technique [0002] Most of the massive long-flame coal in China can be made into semi-coke through dry distillation, which is widely used in submerged arc furnaces, ferroalloy, yellow phosphorus, calcium carbide smelting, coal-to-gas and various furnace combustion, but a large amount of powdery long-flame coal is Due to poor air permeability, dry distillation cannot be carried out smoothly, resulting in more and more backlogs, which not only brings backlogs of funds and low benefits to enterprises, but also causes great pollution to the local environment. Therefore, it is made of powdered long-flame coal. Semi-coke can not only expand the utilization field of powdered long-flame coal, but also reduce the backlog of funds and environmental protection press...
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IPC IPC(8): C10B53/04
Inventor 严铂鑫
Owner 严铂鑫
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