A device for improving raw material utilization rate of needle coke solvent extraction pretreatment device

By designing the alternating operation of the conversion component and the disturbance component, the recovery rate of the light phase asphalt is controlled and the fluidity of the heavy phase asphalt is restored, the low recovery rate and blockage problems of the needle coke solvent extraction pretreatment unit are solved, and the continuous operation of the unit and the improvement of the asphalt recovery rate are achieved.

CN120442276BActive Publication Date: 2025-09-12TAIYUAN SHENGHONG CARBON MATERIAL CO LTD
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Patent Information

Application Number
CN202510958533.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-11
Publication Date
2025-09-12
Estimated Expiration
2045-07-11

AI Technical Summary

Technical Problem

The existing needle coke solvent extraction pretreatment device has a low light phase asphalt recovery rate, and the heavy phase asphalt easily sticks to the inner wall of the equipment, causing blockage, affecting the continuous operation of the device and the heavy phase asphalt recovery rate.

Method used

A device consisting of a conversion component, a conveying component and a disturbance component was designed. By alternating the operation of the barrier structure and nitrogen purge, the light phase asphalt recovery rate was controlled and the fluidity of the heavy phase asphalt was restored. The oil replenishment pipe and circulation pump were used to improve the liquid disturbance effect in the mixing sphere.

Benefits of technology

It achieves reliable recovery of light phase asphalt and restoration of fluidity of heavy phase asphalt, solves the problem of continuous operation of the device, and improves the asphalt recovery rate of the coal tar device and the operating stability of the equipment.

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Abstract

The present invention relates to a device for improving the raw material utilization rate of a needle coke solvent extraction pretreatment device, which belongs to the technical field of needle coke production. The device comprises a drop body, a drop vertical pipe for dividing and dropping materials is fixedly installed on the bottom surface of the drop body, and a mixing spherical shell for diluting and mixing is fixedly installed on the bottom surface of the drop vertical pipe. Delivery connecting pipes for raw material delivery are fixedly installed on the left and right sides of the surface of the drop body. A conversion component for converting the drop is provided on the left side of the surface of the drop vertical pipe. An oil replenishment pipe for oil replenishment is fixedly installed on the upper left side of the mixing spherical shell. A plurality of liquid level gauges for liquid level control are provided on the top surface of the mixing spherical shell. The present invention solves the problem of continuous operation of a needle coke solvent extraction pretreatment device after the separation capacity is broken through, and while solving the environmental protection problem of waste residue treatment, it also improves the asphalt recovery rate of the coal tar device.
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