Online acquisition system and method for catalyst slurry

Abstract

The invention relates to an online acquisition system and an online acquisition method for catalyst slurry. The online acquisition system for the catalyst slurry comprises (A) a sampling system, and (B) an inert medium injection system, wherein the sampling system comprises a first sampling pipeline (14), a second sampling pipeline (16) and a catalyst slurry collecting container (11); the first end of the first sampling pipeline (14) extends into a slurry reactor (8); the first sampling pipeline (14) is provided with a first valve (6); the second end of the second sampling pipeline (16) is connected to the second end of the first sampling pipeline; the second sampling pipeline (16) is provided with a second valve (7) and a third valve (10); the catalyst slurry collecting container (11) is connected to the first end of the second sampling pipeline (16); the inert medium injection system comprises an inert liquid medium supply device (1) and a fourth pipeline (12); and the inert liquid medium supply device (1) is connected to the second ends of the first sampling pipeline (14) and the second sampling pipeline (16). The system can easily acquire catalyst slurry on line.

Description

technical field [0001] The invention relates to a catalyst slurry online collection system and method, in particular to a catalyst slurry online collection system and method in a Fischer-Tropsch synthesis slurry bed reactor. Background technique [0002] Fischer-Tropsch synthesis refers to the synthesis gas CO and H under certain conditions 2 A reaction in which hydrocarbons are synthesized under the action of a catalyst. Since the 1950s, the Sasol Company in South Africa has realized large-scale industrialization of coal-based synthetic liquid fuels (Dry, M.E., Catalysis Today, 1990, 6(3) 183-206). Cobalt-based catalysts and iron-based catalysts are commonly used in Fischer-Tropsch synthesis, and the reactors used include fixed-bed reactors, fluidized-bed reactors and slurry-bed reactors. Cobalt-based catalysts are more suitable for Fischer-Tropsch synthesis in which natural gas is the source of synthesis gas, based on the requirements for the ratio of hydrogen to carbon ...

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Problems solved by technology

However, in domestic and international research work, there are very few reports on sampling methods and systems for Fischer-Tropsch synthesis slurry bed catalysts.

[0005] The Chinese patent No. ZL90214227.5 (CN2072151U) titled "A High-Temperature, High-Pressure Sampling Container" discloses a sampling device that can be used for high-temperature, high-pressure deep well sampling, but this sampling device is only suitable for high-temperature, high-pressure For deep well steam sampling, the sample does not contain solid particles, will not cause wear to the sampling device, and its structure is simple, therefore, the sampling container cannot be used for sampling during the slurry bed Fischer-Tropsch synthesis reaction process

[0006] The Chinese patent of patent application No. 96193860.9 (CN1184529A) title " sampling method and equipment " discloses a kind of method and equipment of sampling from the flow suspension that the polymer particle in olefin polymerization and hydrocarbon diluent form, but this This method is only applicable to the situation of low temperature and pressure, and is not suitable for the situation of medium temperature and medium pressure of Fischer-Tropsch synthesis. Therefore, in the process of slurry bed Fischer-Tropsch synthesis reaction, the sampling method and system cannot be used to carry out catalyst analysis. Sampling of slurry

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