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Technology and device for non-pollution treatment of waste rolling oil sludge

A rolling sludge and process technology, applied in the field of harmless treatment process and equipment, can solve the problems of limited capacity, high calorific value of sludge, and restrictions on large-scale treatment of waste rolling sludge, so as to achieve high added value and reduce treatment costs Effect

Pending Publication Date: 2019-05-07
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Burial will occupy a large amount of land, and the capacity is limited, and there will be a risk of leakage; while incineration treatment has high operating costs due to the high calorific value of the oil sludge; therefore, the limitations of these two methods greatly limit large-scale treatment Waste rolling sludge

Method used

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  • Technology and device for non-pollution treatment of waste rolling oil sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A device for pollution-free treatment of waste rolling oil sludge, comprising a raw material tank 1, the discharge port of the raw material tank 1 is connected with a delivery pump 2, and a heat exchanger 3 is connected through the delivery pump 2, and the outlet of the heat exchanger 3 is connected to a ceramic membrane The feed port of the filter 4 is connected, the ceramic membrane filter 4 is provided with a clear liquid outlet, and the clear liquid outlet is connected with a flash tank 9, and the top of the flash tank 9 is provided with a solvent recovery pipeline, through which The pipeline is connected with a solvent recovery tank 10, and the solvent recovery tank 10 is connected to the solvent inlet of the raw material tank 1; the bottom of the ceramic membrane filter 4 is provided with an outlet for filtering and concentrating the slag liquid, and the outlets are respectively connected to a recovery tank for filtering and concentrating the slag liquid. Pipeline ...

Embodiment 2

[0033] A pollution-free process for treating waste rolling sludge,

Embodiment 3

[0041] A pollution-free process for treating waste rolling sludge,

[0042] Application of the device for pollution-free treatment of waste rolling sludge in Example 1 is completed, wherein the grinding equipment is a Raymond mill;

[0043] Specific steps are as follows:

[0044] Mix the rolling sludge with a mixed solvent of n-hexane and isopropanol (the addition of isopropanol is 5% of the mass of n-hexane) in a mixing tank at a ratio of 1:4 (m / m), heat up to 50°C and stir After the dissolution is complete, after heat exchange to 20°C, a centrifugal pump is used to inject the ceramic membrane filter unit, and the filter membrane precision used at this time is 15 nanometers.

[0045] Open the circulating fluid valve to maintain the inlet pressure of the filter membrane at 0.3 MPa. After filtration, the filtrate is sent to the flash tank and flashed at 250 ° C. The solvent is recycled, and the rolling oil is extracted from the bottom of the flash tank; the solvent is recycled t...

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Abstract

The invention relates to a technology and a device for non-pollution treatment of waste rolling oil sludge. The waste rolling oil sludge is treated by the device to realize the recycling of a solvent,and separated iron powder is completely free of oil. The technology structure of the device includes a mixing unit, a filtering unit, a concentrating unit, a distilling unit and a drying unit. Compared with the prior art, the technology realizes the non-pollution, recycling and value treatment of the waste oil sludge in a magnetic filter to recycle the solvent, the rolling oil and the iron powder.

Description

technical field [0001] The invention relates to a harmless treatment process and device for waste rolling oil sludge in the steel plate industry, and belongs to the technical field of harmless, resourceful and valued utilization of hazardous waste. Background technique [0002] In the process of steel rolling, the emulsion needs to pass through the magnetic filtration system to remove the iron powder in the emulsion, so that the emulsion can be purified, so that it can be recycled. The magnetic filtration system scrapes off the iron powder through the scraper. It became oily iron mud. The composition of the iron sludge is complex and the processing technology is difficult, which has always been a technical problem restricting the development of this industry. Early cold rolling mills generally entrusted these wastes to hazardous waste treatment plants for landfill or incineration. Burial will occupy a large amount of land, and the capacity is limited, and there will be a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00B09B3/00C10L1/00
Inventor 李新王文静郭振莲牟庆平张志超
Owner CHAMBROAD CHEM IND RES INST CO LTD