Preparation method for copper-ion ferrous sulfide cleaning agent, and cleaning method

A technology of ferrous sulfide and cleaning agent, which is applied in the field of preparation of copper ion ferrous sulfide cleaning agent

Inactive Publication Date: 2020-07-10
NORTH HUAJIN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a preparation method and a cleaning method of a copper ion ferrous sulfide cleaning agent to solve the technical problem of how to further improve the cleaning performance of ferrous sulfide

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  • Preparation method for copper-ion ferrous sulfide cleaning agent, and cleaning method
  • Preparation method for copper-ion ferrous sulfide cleaning agent, and cleaning method
  • Preparation method for copper-ion ferrous sulfide cleaning agent, and cleaning method

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Embodiment Construction

[0014] In order to make the purpose, contents and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the examples.

[0015] The present embodiment proposes a preparation method of copper ion ferrous sulfide cleaning agent, the preparation method comprises weighing CuSO 4 ·5H 2 O; CuSO 4 ·5H 2 O was dissolved in deionized water and NH was added 3 ·H 2 O, to obtain ferrous sulfide cleaning agent. Soluble Cu is added to the cleaning agent 2+ , making it dissociate from ferrous sulfide (FeS) S 2- Generate CuS precipitates, Fe 2+ Fe(OH) is formed after hydrolysis 3 precipitation. In order to reduce the corrosion of the cleaning agent to the equipment, Cu in the solution 2+ The concentration cannot be too high, Cu 2+ The ion concentration is 0.01~0.02mol / L, add ammonia water NH to the cleaning agent 3 ·H 2 O, NH 3 ·H 2 O concentration is 0.1~0.2mol / L, a...

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Abstract

The invention discloses a preparation method for a copper-ion ferrous sulfide cleaning agent, and a cleaning method. The preparation method comprises the following steps: weighing CuSO4.5H2O; and dissolving CuSO4.5H2O by deionized water and then adding NH3.H2O to obtain the ferrous sulfide cleaning agent. A cleaning time is 24h, and a cleaning temperature is 15-30 DEG C. The cleaning agent is capable of enabling a conversion rate for ferrous sulfide to reach about 80%; and moreover, the formula of the cleaning agent is environment-friendly, hydrogen sulfide is not generated in a cleaning process, the products generated after cleaning are copper sulfide and ferric hydroxide, and free from pyrophorisity, and a solution generated after cleaning is pollution-free to environment.

Description

technical field [0001] The invention belongs to the technical field of cleaning agent compound preparation, and in particular relates to a preparation method and a cleaning method of a copper ion ferrous sulfide cleaning agent. Background technique [0002] With the rapid development of the economy, the demand for oil in countries around the world is also increasing. High-sulfur crude oil gradually replaces light oil, which leads to increasingly serious sulfur corrosion in petrochemical plants and storage tanks. The main product of sulfur corrosion is ferrous sulfide, and the spontaneous combustion of ferrous sulfide has become the main cause of fire and explosion accidents in petroleum processing equipment in recent years. The main function of the composite iron sulfide compound is to remove ferrous sulfide in petroleum processing equipment to avoid safety accidents such as spontaneous combustion and flash explosion. [0003] For the development of ferrous sulfide cleanin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/14
CPCC23G1/14
Inventor 唐明李永华任继炎栾春萌苏红杨冬生谭洁王新
Owner NORTH HUAJIN CHEM IND CO LTD
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