Coupled coal powder gasification pyrolysis reactor and process

Abstract

The invention provides a coupled coal powder gasification pyrolysis reactor and process, and relates to the coal gasification and pyrolysis technology. The technical problems of low oil extraction rate, high equipment manufacturing cost, serious heat energy waste and difficult process conversion are solved. The coupled coal powder gasification pyrolysis reactor consists of a gasification furnace and a pyrolysis furnace, wherein the gasification furnace comprises a gasification furnace body, a gasification reaction chamber, a gasification shock chamber, a slag pool and a lag collector; the pyrolysis furnace comprises a pyrolysis furnace body, a pyrolysis reaction chamber, a pyrolysis shock chamber and a separation chamber. The coupled coal powder gasification pyrolysis reactor and the process are used in the technical field of oil preparation from coal and gas preparation through coal, and have the advantages that the equipment structure is simple; the process is advanced; the energy is saved; the environment is protected; the energy consumption is low; the heat energy recovery and utilization rate is high; the oil extraction rate by the coil is high; the technical route can be determined according to the market practical conditions.

Description

technical field [0001] The invention belongs to the technical field of coal gasification and pyrolysis, and in particular relates to a coupled pulverized coal gasification pyrolysis reactor and a process. Background technique [0002] The domestic coal-to-oil technology mainly uses direct liquefaction or indirect liquefaction. The reaction conditions of direct liquefaction are relatively harsh. The liquefaction pressure of the old German process is even as high as 70MPa, and the modern process is also 17-30MPa, and the liquefaction temperature is 420-470°C. The applicable range of coal types is narrow, and direct liquefaction is mainly suitable for young coals such as lignite, long-flame coal, gas coal, non-caking coal, and weakly caking coal. The composition of the product exiting the liquefaction reactor is complex, and the liquid-solid two-phase mixture is relatively difficult to separate due to its high viscosity. Directly liquefying one ton of coal consumes more than ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a coupled pulverized coal gasification pyrolysis reactor and process, and solve the problem of low oil extraction rate, high equipment cost, serious waste of heat energy and technical problems of existing coal-to-oil equipment. Transform Difficult Technical Issues

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