Coupling gasification system and method of pulverized coal and lump coal

Abstract

The disclosure relates to a coupled gasification system and method for pulverized coal and lump coal, the system includes a lump coal gasifier and a pulverized coal gasifier; the pulverized coal gasifier has a pulverized coal gasification reaction chamber, a pulverized coal inlet, and a gasification agent inlet The lump coal gasification furnace has a lump coal gasification reaction chamber, a lump coal inlet, a gas inlet, a slagging port and a crude gas gas outlet; the gas inlet is connected with the pulverized coal gasification reaction chamber, so that the gas generated by the reaction in the pulverized coal gasification reaction chamber It enters the lump coal gasification reaction chamber from the gas inlet, and reacts with the lump coal gasification; the slag outlet is connected with the pulverized coal gasification reaction chamber, so that the solid particles produced by the reaction in the lump coal gasification reaction chamber enter from the slag outlet to the Combustion and gasification reactions occur in the pulverized coal gasification reaction chamber, thereby realizing the simultaneous gasification of pulverized coal and lump coal, so as to balance the uneven supply and demand of pulverized coal and lump coal, and improve the utilization rate and conversion rate of coal.

Description

technical field [0001] The present disclosure relates to the technical field of coal gasification, in particular to a coupled gasification system and method of pulverized coal and lump coal. Background technique [0002] Coal gasification technology is an important way of clean and efficient utilization of coal. [0003] As the mechanization intensity of coal mining is getting higher and higher, the pulverization rate of coal is gradually enhanced, that is, the recovery rate of pulverized coal is increased. At present, most of the most widely used coal gasification technologies use lump coal, which leads to the fact that pulverized coal cannot be effectively processed in many coal mines, and the accumulation is serious, while the supply of lump coal cannot be satisfied in gasification plants. [0004] Therefore, how to gasify pulverized coal and lump coal together to balance the uneven supply and demand of pulverized coal and lump coal and improve coal utilization and conve...

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Problems solved by technology

At present, most of the most widely used coal gasification technologies use lump coal, which leads to the fact that pulverized coal cannot be effectively processed in many coal mines, and the accumulation is serious, while the supply of lump coal cannot meet the needs of gasification plants.

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