The invention relates to a
system and a method for treating pulverized
coal and a
calcium-based
raw material. The
system comprises a
pyrolysis unit, a gas purification unit, a hydrogasification unit and a
calcium carbide smelting unit, wherein the
pyrolysis unit comprises a pulverized
coal and
calcium-based
raw material mixed pellet inlet, a raw
coke oven gas outlet and a
pyrolysis solid pellet outlet; the gas purification unit comprises a raw
coke oven gas inlet and a purified
coke oven gas outlet; the raw
coke oven gas inlet is connected with the raw
coke oven gas outlet; the hydrogasification unit comprises a pulverized
coal spray nozzle, a purified
coke oven gas
spray nozzle, a coke residue outlet and an oil gas outlet; the purified
coke oven gas spray nozzle is connected with the purified
coke oven gas outlet; the
calcium carbide smelting unit comprises a high-temperature
solid pellet inlet, a
calcium carbide furnace gas outlet and a
calcium carbide outlet; the high-temperature
solid pellet inlet is connected with the pyrolysis solid pellet outlet. According to the
system and the method disclosed by the invention, by using the
advantage of high quality and high
hydrogen content of pyrolysis gas obtained by copyrolysis of coal and quick
lime in a preheating furnace, the pyrolysis gas can be used as a
hydrogen source of coal hydrogasification when calcium
carbide is produced, so that the cost of the
hydrogen source is reduced, and the
thermal efficiency of the system is improved.