Normal-temperature dearsenic agent as well as preparation method thereof

Abstract

The invention relates to a normal-temperature dearsenic agent as well as a preparation method thereof, belonging to the technical field of dearsenic purifying. The normal-temperature dearsenic agent consists of active ingredients and auxiliaries, wherein the auxiliaries are one or more of a binder, a pore-forming agent and an extruding aid; the active ingredients comprise the following components: 40wt%-60wt% of manganese dioxide, 5wt%-15wt% of copper oxide and 5wt%-15wt% of zinc oxide; and content of the auxiliaries is 15wt%-20wt%. In the normal-temperature dearsenic agent disclosed by the invention, the manganese dioxide, the copper oxide and the zinc oxide with proper component content are matched, so that competing reaction of H2S and the copper oxide is restrained, and therefore, a using range of copper-series dearsenic agents is broadened, the copper-series dearsenic agents are enabled to be capable of being suitable for an H2S-contaning substance with arsenic to be removed, dearsenic activity of the dearsenic agent is ensured, dearsenic efficiency is improved, and cost of the dearsenic agent is lowered.

Description

technical field

[0001] The invention relates to a normal temperature arsenic removal agent and a preparation method thereof, belonging to the technical field of arsenic removal and purification. Background technique

[0002] In the ethylene industry, in the process of hydrocarbon cracking, catalytic reforming, hydrogenation process, etc., the raw oil will contain a very small amount of arsenic. Although the content of arsenic is very low, it can cause catalyst poisoning, resulting in catalyst failure. Therefore, it is necessary to remove the arsenic compounds in the raw oil as much as possible. Over the years, researchers have been exploring various effective arsenic removal methods in order to minimize the poisoning effect of arsenic on catalysts in petroleum hydrocarbon processing.

[0003] The existing arsenic removal products mainly include nickel-based, lead-based, manganese-based, and copper-based arsenic removal agents; among them, nickel-based arsenic removal agents...

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