Method for preparing oxygenous fuel by coal synthesis gas slurry bed

Abstract

The invention relates to a method for preparing oxygenous fuel by a coal synthesis gas slurry bed. According to the method, a solid catalyst and inert liquid molten paraffin are placed in a slurry bed reactor from the bottom to the liquid level of the reactor, synthesis gas tangentially and swirlingly enter the slurry bed reactor and reacts in a bubble form to form a gas, liquid and solid fluidized form, then the obtained product is processed by a gas-liquid separator and a heat exchanger and the processed product is discharged from an outlet; cold water enters the reactor from the lower part, a natural convection recirculation zone is formed on the inner surface of a membrane water cooled wall, heat is absorbed by the membrane water cooled wall, and then the obtained product is discharged by the heat exchanger through a high-temperature hot water outlet of the reactor. The method adopts a plurality of spray nozzles to enable slurry to take the swirling motion so as to enable bubbles to spirally ascend, thereby reinforcing a stirring function and increasing contact time with slurry by 1.2 to 1.8 times; moreover, temperature difference of the slurry is between 4 DEG C and 8 DEG C, so that reaction efficiency of the reactor is greatly improved.

Description

technical field [0001] The invention relates to a method for producing oxygen-containing fuel in a slurry bed of coal synthesis gas, in particular to a method for producing oxygen-containing fuel in an external swirling slurry bed of coal synthesis gas. Background technique [0002] The gas-liquid-solid three-phase slurry bed reactor has the characteristics of simple structure, uniform dispersion effect, and excellent transfer performance. The huge development potential of equipment in coal chemical industry and other fields. [0003] Publication No. CN1593740A is an invention patent of "high-efficiency slurry bed reactor", in which distribution plates, heating plates, and inner sleeve components are arranged in the reactor; ZL200910209536.3 discloses a slurry bed reactor, Built-in filter components are used; ZL201010125941.X discloses a slurry bed reactor, which uses a built-in cyclone and heat-absorbing coil; the above patents use a built-in heat exchange and separation m...

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Problems solved by technology

[0003] Publication No. CN1593740A is an invention patent of "high-efficiency slurry bed reactor", in which distribution plates, heating plates, and inner sleeve components are arranged in the reactor; ZL200910209536.3 discloses a slurry bed reactor, Built-in filter components are used; ZL201010125941.X discloses a slurry bed reactor, which uses a built-in cyclone and heat-absorbing coil; the above patents use a built-in heat exchange and separation method, and the disturbance capacity of the fluid needs to be strengthened. The main problems of reactor enlargement: blockage of distributor, countercurrent, uneven distribution of catalyst and temperature, etc. The increase of diameter wil...

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