Dechlorination agent and preparation method thereof

Abstract

The invention provides a dechlorination agent. Ferrous sulfate, calcium powder and high-sulfur capacity powder are taken as effective raw materials, ferrous sulfate and calcium hydroxide in the calcium powder are firstly used for reacting to generate iron hydroxide oxide and calcium sulfate, iron hydroxide oxide which is produced by reacting and the high-sulfur capacity powder which is directly added and takes iron hydroxide oxide as a main component are jointly used as active components, the synergy between the two active components is fully exerted, and the chlorine capacity of the dechlorination agent is effectively improved; and simultaneously, calcium sulfate which can be autogenously produced in the reaction process and has a bonding effect is further used to optimize a pore canal, a specific surface area and distribution of an active center in the structure of the dechlorination agent, and the mechanical strength of the dechlorination agent can be further effectively improved. The dechlorination agent provided by the invention has relatively high chlorine capacity and mechanical strength, and data shows that the chlorine capacity of the dechlorination agent is above 65% and the mechanical strength is above 100N / cm.

Description

technical field [0001] The invention relates to a dechlorination agent and a preparation method thereof, belonging to the technical field of dechlorination agents. Background technique [0002] Chlorine is a common catalyst and adsorbent poison in industry, and it also pollutes the environment. Because chlorine has high electron affinity and mobility, it is easy to react with metal ions, and often migrates downward with the process fluid, causing permanent poisoning of the catalyst, and it is often the whole bed. For the low-stable catalyst in the ammonia synthesis industry, chlorine is more harmful than sulfur. After chlorine poisoning, a new phase will be formed in the catalyst, which will destroy the structure of the catalyst, promote the rapid growth of copper crystal grains in the catalyst, and the activity will drop sharply. Cannot be regenerated. [0003] In the petrochemical industry, the activity of the reforming catalyst in the catalytic reforming process will gr...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the dechlorination agent in the prior art has the problems of low strength, short service life and unreliable chlorine capacity, so a dechlorination agent with high strength, long service life and high chlorine capacity is proposed and its preparation method