Start-up method of dual-series Fischer-Tropsch reactor

Abstract

The invention discloses a starting method for a double-series Fischer-Tropsch reaction device. The starting method includes the following steps that heavy diesel is added into a single synthesis reactor, a certain quantity of iron-based catalyst is prepared through a reduction system to be added into the synthesis reactor, and the double-series Fischer-Tropsch reaction device is started step by step; when the reactor operates at full load, a half of mixed materials in the synthesis reactor is pressed into another synthesis reactor, and the loads of the two synthesis reactors reach 50% or above; the catalyst is supplemented to the two synthesis reactors through a reduction reactor respectively till the two synthesis reactors operate at full load. According to the starting method for the double-series Fischer-Tropsch reaction device, by changing an original starting scheme of the double-series Fischer-Tropsch synthesis device, original starting raw materials are saved, low-load running time of a Fischer-Tropsch reactor is shortened, the whole starting time is shortened, the loads of the two Fischer-Tropsch reaction systems reach 50% or above in a short time, the two Fischer-Tropsch reaction systems stably run, the starting cost is saved, and economic benefits are rapidly created.

Description

technical field [0001] The invention belongs to the field of chemical equipment, and in particular relates to a method for starting up a dual-series Fischer-Tropsch reaction device. Background technique [0002] Domestic Fischer-Tropsch synthesis industrialization units have been completed and put into operation in 2009. There are companies such as Inner Mongolia Yitai Coal-to-oil Co., Ltd. and Shanxi Lu'an Coal-based Synthetic Oil Co., Ltd., with a scale of 160,000-180,000 tons / year, all of which are single / sets react system. The million-ton Fischer-Tropsch synthesis units were completed and started up successively from the end of 2016 to 2017. They were the 4 million tons / year coal-to-liquids project of Shenhua Ningxia Co., Ltd., and the 1.2 million tons / year fine chemicals demonstration project of Inner Mongolia Yitai Chemical Co., Ltd., Lu An Group's million-ton project is about to start operation. The million-ton Fischer-Tropsch synthesis unit is a dual-series or mul...

AI Technical Summary

Problems solved by technology

Moreover, the two reactors were started up sequentially, and each of the two reactors operated at a load below 50%. The low-load operation of the Fischer-Tropsch slurry bed reactor is very unfavorable to the system, and it is easy to cause a series of disadvantages such as inability to continuously deliver products and system blockage.

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