Fischer-Tropsch slurry bed reaction system and Fischer-Tropsch synthesis reaction method

Abstract

The invention relates to the field of Fischer-Tropsch synthesis, and discloses a Fischer-Tropsch synthesis slurry bed reaction system and a Fischer-Tropsch synthesis reaction method. The slurry bed reaction system comprises a slurry bed reactor, a heat exchanger, an external heat exchange device and a part for supplementing cooling water; the heat exchanger is arranged inside the slurry bed reactor; the external heat exchange device is arranged outside the slurry bed reactor; the external heat exchange device comprises a steam pocket, a buffer tank and a heater which are sequentially connectedin series; the heater communicates with a lower water inlet of the heat exchanger; the steam pocket communicates with an upper water outlet of the heat exchanger; and the part for supplementing the cooling water is used for providing the cooling water to the external heat exchange device. The system can timely and effectively remove excessive heat brought by temperature runaway when the local temperature runaway of the catalyst is generated, so that the yield of a target product is ensured, and the operation safety of a device is improved.

Description

technical field [0001] The invention relates to the field of Fischer-Tropsch synthesis, in particular to a Fischer-Tropsch slurry bed reaction system and a method for Fischer-Tropsch synthesis. Background technique [0002] The Fischer-Tropsch synthesis reaction is a strongly exothermic reaction. The distribution of Fischer-Tropsch synthesis products and the activity of catalysts are very sensitive to temperature. Maintaining a relatively constant temperature in the reactor is very important for the smooth progress and safe operation of the reaction in the slurry bed reactor. Therefore, when performing the Fischer-Tropsch synthesis reaction, it is necessary to remove the heat of reaction in the slurry bed reactor out of the reactor evenly and quickly. [0003] In addition, local overheating of the catalyst often occurs in the Fischer-Tropsch synthesis reaction, which causes carbon deposition on the catalyst and even deposits in the reactor, resulting in rapid deactivation o...

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Problems solved by technology

[0003] In addition, local overheating of the catalyst often occurs in the Fischer-Tropsch synthesis reaction, which causes carbon deposition on the catalyst and even deposits in the reactor, resulting in rapid deactivation of the catalyst and a decrease in the yield of the target product, etc.

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