Catalyst for preparing alcohol from coke quenching waste gas and preparation method thereof

Abstract

The invention provides a catalyst for preparing alcohol from coke quenching waste gas. The catalyst comprises silicon dioxide, graphene, Mo, Mn and Ni metal elements, and one or a combination of more of alkali metal and alkaline earth metal elements. According to the invention, the catalyst for preparing alcohol from coke quenching waste gas does not contain sulfur element, sulfur-containing waste gas cannot be generated after waste gas treatment, and environmental protection is facilitated; and due to the composition characteristics, the composite material can be prepared from relatively cheap materials, so that the cost is reduced, and industrialization is convenient to realize.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to a coke-quenching exhaust gas alcohol production catalyst and a preparation method thereof. Background technique [0002] Coking refers to the process in which coking coal is heated to about 1000°C (high-temperature dry distillation) under air-isolated conditions, and coke, coke oven gas and other coking chemical products are produced through thermal decomposition and coking. The hot red coke produced during the high-temperature coking process needs to be quenched and cooled before being convenient for transportation or subsequent utilization. At present, coke quenching technologies include dry coke quenching and wet coke quenching, both coke quenching processes will produce H 2 , CO, CO 2 and CH 4 High-temperature waste gas as the main component, if the high-temperature waste gas is recovered and converted into alcohol liquid fuel, not only can the problem of waste gas emission...

AI Technical Summary

Problems solved by technology

[0003] The key to preparing high-temperature waste gas produced by coke quenching into alcohol liquids lies in a suitable catalyst. Researchers at home and abroad have conducted a lot of research in this field. In 1986, Dow Chemical of the United States applied for the patent of molybdenum sulfide-doped alkali metal catalyst for the first time. US4752622 and US4752623, follow-up people have developed a lot of improved molybdenum sulfide-based catalysts on this basis again, although these catalysts show higher C 2 + Alcohol selectivity and catalytic activity, but it contains sulfur, and the environmental pollution of sulfur-containing gas emissions needs to be considered when it is disposed of, making it necessary to study more environmentally friendly alternative catalysts

Rhodium-based catalysts are another class of catalysts that have been studied more in the prior art, and many of them show good C 2 + Alcohol selectivity and catalytic activity, but rhodium-based catalysts are generally more expensive, so it is necessary to develop cheaper catalysts

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