Coke oven gas hydrogenation and desulfurization catalyst and method for preparing same

Abstract

The invention discloses a coke oven gas hydrogenation and desulfurization catalyst. Al2O3 is used as a carrier for the coke oven gas hydrogenation and desulfurization catalyst, Mo is used as an activecomponent for the coke oven gas hydrogenation and desulfurization catalyst, Si is used as a first accelerator for the coke oven gas hydrogenation and desulfurization catalyst, B and/or P are used assecond accelerators for the coke oven gas hydrogenation and desulfurization catalyst, the Mo active component exists in the form of MoO3, the first accelerator Si exists in the form of SiO2, the second accelerators exist in the form of second accelerator oxide, the second accelerator P exists in the form of P2O5, and the second accelerator B exists in the form of B2O3. The invention further provides a method for preparing the coke oven gas hydrogenation and desulfurization catalyst. The method includes preparing silicon-molybdenum co-impregnation liquid; carrying out drying and calcining to obtain the coke oven gas hydrogenation and desulfurization catalyst. The coke oven gas hydrogenation and desulfurization catalyst can be directly used without being calcined. The coke oven gas hydrogenation and desulfurization catalyst and the method have the advantages that the coke oven gas hydrogenation and desulfurization catalyst is a silicon-molybdenum catalyst and is high in initial activityand good in heat resistance, the method is simple and is convenient to operate, and industrial production can be facilitated; the accelerators do not need to be vulcanized before being used, and accordingly the usage amounts of vulcanizing agents can be reduced.

Description

technical field [0001] The invention belongs to the technical field of desulfurization catalysts, and in particular relates to a coke oven gas hydrogenation desulfurization catalyst and a preparation method thereof. Background technique [0002] Coke oven gas is a by-product of coking in coking plants, and its main components are methane, hydrogen, carbon monoxide and carbon dioxide. The recovery and utilization of coke oven gas plays an important role in the clean utilization of coal resources in our country. Generally, coke oven gas can be used to produce synthetic ammonia, methanol, H 2 , LNG and other products. In these technological processes, the coke oven gas must be purified first, and the desulfurization process is particularly important. [0003] Usually in the desulfurization process, the coke oven gas still contains 10mg / Nm after wet desulfurization to remove most of the sulfur-containing substances 3 ~200mg / Nm 3 H 2 S and 10mg / Nm 3 ~200mg / Nm 3 of organic...

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Problems solved by technology

[0010] The vulcanization process generally uses carbon disulfide or dimethyl disulfide as the vulcanizing agent. In order to ensure the complete vulcanization of the catalyst, an excessive amount of vulcanizing agent needs to be used. The sulfur-containing tail gas produced by vulcanization is generally incinerated, and a large amount of SO is emitted. 2 gas, causing serious environmental pollution

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