A gaseous ferrous sulfide deodorizing passivator and a preparation method thereof

By using a gas-phase ferrous sulfide deodorizing and passivating agent composed of a multifunctional block copolymer and triethanolamine, the problems of incomplete cleaning and equipment corrosion in the existing technology are solved, achieving efficient removal of ferrous sulfide and inhibition of hydrogen sulfide, and reducing wastewater treatment costs.

CN122104351AActive Publication Date: 2026-05-29淄博康业环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
淄博康业环保科技有限公司
Filing Date
2026-04-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing vapor-phase cleaning agents have problems such as incomplete cleaning, equipment corrosion, and high wastewater treatment costs when removing ferrous sulfide from oil refining units. In particular, it is difficult to achieve uniform contact on complex equipment and internal components, and the cleaning products are difficult to biodegrade.

Method used

A gas-phase ferrous sulfide deodorizing and passivating agent composed of multifunctional block copolymers, penetrants, triethanolamine, and sodium perborate forms a dense hydrophobic passivation film through the hydrophilicity of polyethylene glycol blocks and the chelating effect of catechol groups, preventing the decomposition of ferrous sulfide, and using triethanolamine to neutralize hydrogen sulfide, achieving rapid removal and deodorization effects.

Benefits of technology

It effectively removes ferrous sulfide, inhibits the generation of hydrogen sulfide, prevents equipment corrosion, reduces cleaning wastewater volume, and improves cleaning efficiency and safety.

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Abstract

The application belongs to the technical field of passivation deodorant, and specifically provides a gaseous ferrous sulfide deodorizing passivation agent and a preparation method thereof. The gaseous ferrous sulfide deodorizing passivation agent comprises component A and component B; the component A comprises the following components: a multifunctional block copolymer, a penetrating agent, a corrosion inhibitor, an antioxidant, isopropyl alcohol and deionized water; the component B comprises the following components: triethanolamine, sodium perborate and deionized water; and the multifunctional block copolymer is prepared by reaction of polyethylene glycol monomethyl ether, octadecyl acrylamide and dopamine methyl acrylamide. The gaseous ferrous sulfide deodorizing passivation agent prepared by the application has good deodorizing, passivating and cleaning effects.
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