Method for producing coal gasification formed coke

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...

AI Technical Summary

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 complicated, it cannot be produced in a continuous assembly line, and the production efficiency is low;

[0007] ③ Due to poor lime cohesion, the cold and hot strength of the finished product is not high, resulting in insufficient mechanical strength and thermal stability of the finished product;