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Environment-friendly neutral cleaning agent

A neutral cleaning agent and cleaning agent technology, applied in the field of fine chemicals, can solve the problems of relatively large environmental pollution, difficult fluoride treatment, and difficult waste liquid discharge and treatment, so as to reduce waste water discharge and save costs. Effect

Inactive Publication Date: 2016-02-03
SHANGHAI LANPU CLEANING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cleaning agents used in the cleaning industry and the market are all inorganic acids (hydrochloric acid + hydrofluoric acid), or (nitric acid + hydrofluoric acid, sulfuric acid, (sulfuric acid + hydrofluoric acid), phosphoric acid, (phosphoric acid + hydrofluoric acid), etc. Organic acids: citric acid, sulfamic acid, EDTA, oxalic acid and other solutions, most of which are waste liquids after cleaning, which are difficult to discharge, fluoride, COD, etc. are difficult to deal with, and cause great pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Grind 20kg of glycolic acid, 75kg of diammonium hydrogen citrate, 2kg of oxalic acid, 2kg of sodium fluoride, and 1kg of ammonium bifluoride to 10 mesh respectively, and put them into a stirring tank together, and stir evenly.

Embodiment 2

[0036] Grind 50kg of glycolic acid, 40kg of diammonium hydrogen citrate, 5kg of oxalic acid, 2kg of potassium fluoride, and 3kg of ammonium bifluoride to 20 mesh respectively, put them into a stirring tank together, and stir evenly.

Embodiment 3

[0038] Grind 50kg of glycolic acid, 45kg of diammonium hydrogen citrate, 0.5kg of oxalic acid, 3kg of potassium fluoride, and 1.5kg of ammonium bifluoride to 30 mesh respectively, put them into a stirring tank together, and stir evenly.

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PUM

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Abstract

The invention discloses an environment-friendly neutral cleaning agent. The cleaning agent is composed of, by weight, 20%-50% of glycolic acid, 40%-75% of ammonium citrate dibasic, 0.5%-5% of oxalic acid, 0.1%-5% of hydrofluoride, and 0.1%-5% of assistants. According to a preparation method for the environment-friendly neutral cleaning agent, after being ground, the raw materials are evenly mixed and stirred. The environment-friendly neutral cleaning agent has the advantages that 1, the corrosion rate to carbon steel is smaller than 0.945 g / h.m<2>, the corrosion rate to stainless steel is smaller than 0.00113 g / h.m<2>, the corrosion rate to aluminum and aluminum alloy is smaller than 0.00186 g / h.m<2>, the corrosion rate to copper and copper alloy is smaller than 0.0128-0.0368 g / h.m<2>, and the corrosion rate to titanium alloy, nickel-based alloy and the like is smaller than 0.000215 g / h.m<2>; 2, cleaning liquid can be directly degreased, cleaned and passivated integrally, and therefore the discharging amount of waste water is reduced, and a large quantity of cost is reduced; 3, cleaning waste water is naturally degraded and can be completely degraded within 20-25 days, and environment pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to an environment-friendly neutral cleaning agent. Background technique [0002] As industrialization becomes more sophisticated, industrial production has higher and higher requirements for the treatment of environmentally harmful wastewater, and a large amount of wastewater is not allowed, and as little or no wastewater is discharged as possible. [0003] The cleaning agents used in the cleaning industry and the market are all inorganic acids (hydrochloric acid + hydrofluoric acid), or (nitric acid + hydrofluoric acid, sulfuric acid, (sulfuric acid + hydrofluoric acid), phosphoric acid, (phosphoric acid + hydrofluoric acid), etc. Organic acids: citric acid, sulfamic acid, EDTA, oxalic acid and other solutions, most of them are waste liquids after cleaning, which are difficult to discharge, fluoride, COD, etc. are difficult to deal with, and cause great pollution to the envi...

Claims

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Application Information

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IPC IPC(8): C23G1/24
Inventor 刘军刘书宏刘雅中
Owner SHANGHAI LANPU CLEANING TECH CO LTD
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