Project Overview

The white oil decolorization device is an auxiliary equipment for the wet-process lithium battery diaphragm production line and the extract recovery device. In the diaphragm production process, white oil is used as a pore-forming agent and dichloromethane is used as an extractant. The resulting extract contains dichloromethane, white oil, a small amount of water, and PE impurities. This device decolorizes the recovered white oil to meet the standards for reuse, thereby achieving effective recycling and utilization of resources, reducing the company's raw material procurement costs, and improving economic benefits.

Process

① White oil pretreatment and mixing

After the decolorized white oil is heated in a preheater, it is mixed with the clay in a premixing kettle. The clay is added through a vacuum feeder and stirred to form a uniform mixture.

② Decolorization reaction

The mixed white oil and white clay enter the decolorization kettle, are heated by steam, and undergo decolorization reaction under vacuum conditions to remove dichloromethane and water.

③ Circulation and Filtering

The bleached white oil is circulated into the filter cake layer filter through a circulation pump, forms a pre-film filtration with the white clay, and finally obtains refined white oil through a cooler and a fine filter.

④ Environmental protection treatment

The gas generated during the treatment process is subjected to vacuum demisting and condensation treatment, and the condensate and condensed water are discharged into the corresponding storage tanks and treatment systems.

⑤ Maintenance and preparation

Regularly maintain the cake layer filter and switch the standby unit to ensure long-term stable operation of the equipment and filtering effect.

⑥ Oil mist recovery and treatment

The oil mist generated during the de-cake process is recovered and treated by a cyclone separator and a mist eliminator, and the white oil is eventually returned to an intermediate storage tank or subjected to a spray circulation operation.

Features and Benefits

High purity: After multiple process steps, impurities are effectively removed to improve product purity.

Stability: Use sophisticated process control and equipment to ensure stable product quality and performance.

Environmental protection: Use advanced environmental protection processing technology to reduce the impact on the environment.

Upstream and downstream relationships

The white oil decolorization unit is an important supporting equipment of Shanxi Housheng diaphragm production line. It is responsible for processing the white oil that does not meet the use standards recovered from the distillation unit and tank area. The qualified white oil after treatment is put into the production line again as raw material to achieve resource recycling. These process flows and equipment are closely related to the diaphragm production line and the extract recovery unit, and together constitute a complete production and resource utilization system.

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Summarize

Our white oil decolorization project provides customers with high-quality, environmentally friendly white oil products through carefully designed process and advanced equipment to meet the needs of various applications. If you have any customized needs or detailed consultation, please feel free to contact us.

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