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

A catalyst and waste gas technology, applied in the field of coking, can solve the problem of expensive catalyst, and achieve the effects of environmental protection, high selectivity, and wide source of raw materials

CN112973723AActive Publication Date: 2021-06-18FUGU TAIDA COAL CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-06-18

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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.
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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...

Examples

Embodiment 1-6

[0057] Examples 1-6 provide specific preparation methods of the coke-quenching exhaust gas alcohol production catalyst, and the coke-quenching exhaust gas alcohol production catalyst of the present invention is prepared.

[0058] The preparation method of each embodiment adopts following basic ideas:

[0059] S1, using hydrochloric acid-ammonium fluoride aqueous solution to carry out pore expansion pretreatment on silica, specifically including the following process:

[0060] S11, prepare hydrochloric acid-ammonium fluoride aqueous solution, wherein the mass fraction of hydrogen chloride is 3-6%, the mass fraction of ammonium fluoride is 15-30%, heat to 45-60°C, then add silica powder, and stir at constant temperature 3 to 5 hours, filter, wash, and collect the filter cake;

[0061] S12, treating the filter cake in steam at 600-720° C. and 1.0-1.3 MPa for 1-3 hours, and then drying.

[0062] S2, mixing the silicon dioxide obtained in step S1 with graphene, a compound contain...