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Steel belt degreasing production technology with no liquid waste discharge

A production process and steel strip technology, applied in the field of steel strip degreasing production process, can solve problems such as inability to recycle energy, increase degreasing cost, and secondary pollution of the environment, so as to reduce production sewage cost, reduce degreasing cost, and protect the environment Effect

Inactive Publication Date: 2019-04-09
江苏延汉材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing steel strip degreasing processes include spray immersion cleaning, lye scouring cleaning, electrolytic cleaning, ultrasonic cleaning, and clear water scouring cleaning. The discharge of waste liquid in the process will cause secondary pollution to the environment, and at the same time, it cannot be recycled, resulting in waste of energy and increased degreasing costs

Method used

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  • Steel belt degreasing production technology with no liquid waste discharge

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] As a preferred embodiment of the present invention, the degreasing liquid in the degreasing liquid tank 1 is a sodium hydroxide solution with a concentration of 2-4%, the temperature is 60-80° C., and the spraying method adopts a high-speed spraying method.

[0032] In this embodiment, the degreasing solution is a sodium hydroxide solution with a concentration of 2-4%, the temperature is 60-80°C, and the spraying method adopts high-speed spraying. After many experiments, it is a pretreatment with better effect and lower cost. .

Embodiment 2

[0034] As a preferred embodiment of the present invention, the degreasing liquid in the degreasing liquid tank 2 is low-foaming degreasing powder mixed evenly with lye, the alkali point is 50-90g / L, and the temperature is 60-80°C.

[0035] The degreasing solution in this example is low-foaming degreasing powder mixed evenly with lye, the alkali point is 50-90g / L, and the temperature is 60-80°C. After many experiments, it is a combination of degreasing with better effect and lower cost.

Embodiment 3

[0037] As a preferred embodiment of the present invention, the waste liquid filtered by the ceramic membrane filter is concentrated once a week to one month, and the concentrated waste liquid is neutralized.

[0038] In this embodiment, the filtered waste liquid is regularly treated, so that the ceramic filter membrane can maintain an excellent filtering effect, and at the same time, centralized treatment can reduce costs.

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Abstract

The invention discloses a steel belt degreasing production technology with no liquid waste discharge. According to the steel belt degreasing production technology with no liquid waste discharge, high-temperature high-speed spraying degreasing is conducted on a steel belt in a degreasing tank 1 and a degreasing tank 2, and therefore greasy dirt on the steel belt can better removed; degreasing liquid is prevented from entering subsequent rinsing tanks through a rubber strip wiper, and therefore the residual amount of the degreasing liquid on the surface of the steel belt is decreased; a grease-water mixture in degreasing liquid boxes is pumped into a ceramic membrane filter through a water pump, the greasy dirt and water are separated, the water containing the degreasing liquid returns to the degreasing liquid boxes to be cycled, the degreasing liquid is cyclically utilized, the steel belt degreasing cost is reduced, and meanwhile environmental pollution caused by direct discharge is avoided; the grease content of the water in clear water boxes is increased along with increasing of the cleaning amount, the degreasing liquid boxes are automatically supplied with water, the clear waterboxes achieve automatic clear water supplementing through liquid level meter switches, and the cleanliness of cleaning water is guaranteed; and concentrated greasy dirt isolates can be treated in a concentrated mode, no waste water drainage is guaranteed, a large amount of waste water is drained and converted into a small amount of the greasy dirt to be treated, and the production dirt dischargecost is reduced.

Description

technical field [0001] The invention relates to the technical field of steel strip degreasing, in particular to a steel strip degreasing production process without liquid waste discharge. Background technique [0002] In the process of tinning the steel strip, the degreasing process is to use the cleaning method to remove the oil, iron filings and dust attached to the surface of the raw material steel strip in the previous process, so as to obtain a fully clean surface of the steel strip. [0003] Existing steel strip degreasing processes include spray immersion cleaning, lye scouring cleaning, electrolytic cleaning, ultrasonic cleaning, and clear water scouring cleaning. The discharge of waste liquid in the process will cause secondary pollution to the environment, and at the same time, it cannot be recycled, resulting in waste of energy and increased degreasing costs. Contents of the invention [0004] The object of the present invention is to provide a steel strip degr...

Claims

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Application Information

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IPC IPC(8): C23G3/02
CPCC23G3/027C23G3/029
Inventor 赵鹏
Owner 江苏延汉材料科技有限公司