Sulfur-tolerant shift methanation integrated catalyst and preparation method thereof

Abstract

The invention relates to a catalyst of a sulfur-tolerant shift methanation reaction for preparing syngas by using residual oil, heavy oil, petroleum coke, coal and other heavy raw materials, particularly to a sulfur-tolerant shift methanation integrated catalyst and a preparation method thereof, wherein the sulfur-tolerant shift methanation integrated catalyst comprises active components, carriersand an auxiliary agent, and is prepared by using cobalt sulfide and molybdenum sulfide as active components, using titanium oxide and calcium aluminate as carriers and using a rare earth aid as an auxiliary agent through a mixing kneading method. According to the present invention, the active components are not easily lost in the carriers, the structure and the activity stability of the catalystare good, the catalyst can adapt to the conditions of high pressure, high space velocity and low water-gas ratio, the sulfur-tolerant shift reaction and the methanation reaction can be simultaneouslycarried out while the hydrogen gas and the methane product can be simultaneously obtained, the methanation reaction has a low activation temperature, and the preparation method has advantages of simple process and low preparation cost.

Description

technical field [0001] The invention relates to a catalyst for the sulfur-resistant shift methanation reaction of producing synthesis gas from heavy raw materials such as residual oil, heavy oil, petroleum coke, coal, etc., in particular to an integrated sulfur-resistant shift methanation catalyst and a preparation method. Background technique [0002] At present, the generally adopted technological process for producing a small amount of low calorific value fuel gas by-product of coal gasification hydrogen production unit is to set up conversion line and non-transformation line to meet the refinery’s demand for hydrogen and fuel gas respectively, but the investment of the device is large and the fuel gas heat The value is low, and the demand for hydrogen and fuel gas cannot be switched flexibly. If the methanation process is embedded in the conversion section, the non-transformation line is canceled to perform conversion and methanation reactions at the same time, after the...

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Problems solved by technology

[0005] China began to develop sulfur-resistant methanation catalysts in the 1980s. Research institutes such as Dalian Institute of Chemical Physics, University of Science and Technology of China, and Shanghai Gas Research Institute developed a batch of catalysts in the 1990s, but most of them only stayed at the scale of "upgrading" experimental devices , have not been applied industrially

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