A load-type defluorination agent for removing hydrogen fluoride in hydrogen chloride gas and its preparation method

Abstract

The invention discloses a load-type fluorine remover used for removing hydrogen fluoride in hydrogen chloride gas, which is composed of a porous carrier and a fluorine removal active ingredient loaded on the porous carrier, the fluorine removal active ingredient can be existed on inner part and external surface of the tunnel of the porous carrier in a thin layer mode with particles of 0.1nm-5mum, and the mass ratio of the fluorine removal active ingredient to the porous carrier is 0.0005-3: 1. The invention also provides a preparation method of the load-type fluorine remover. The preparation method thereof has the advantage of simple process, and the prepared load-type fluorine remover has the advantages of high utilization rate, good fluorine removal effect and green environmental protection.

Description

technical field

[0001] The invention relates to a method for purifying and recovering hydrogen chloride, in particular to a loaded defluorinating agent for removing hydrogen fluoride in hydrogen chloride gas and a preparation method thereof. Background technique

[0002] With the rapid development of the fluorine chemical industry, the comprehensive utilization of a large amount of by-product hydrogen chloride gas has become an urgent problem. Due to the presence of hydrogen fluoride in the by-product hydrogen chloride gas, its utilization is greatly restricted. At present, in addition to partial recycling in the production of chlorosulfonic acid, monochloromethane, calcium chloride, barium chloride, etc., most of them are absorbed into fluorine-containing hydrochloric acid for sale. The method is relatively simple, not only the economic benefit is not high, but also the Containing fluorine can pose a potential environmental hazard. Removing hydrogen fluoride from by-produ...

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