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Novel coke tower and needle coke production method

A production method and coking tower technology, applied in the field of needle coke preparation, to achieve good viscosity reduction and lubrication effects

Active Publication Date: 2016-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if in the high viscosity environment in the later stage of coking, it cannot be guaranteed that the material ejected from the distributor has enough power to be evenly distributed in the cross section of the system

Method used

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  • Novel coke tower and needle coke production method
  • Novel coke tower and needle coke production method
  • Novel coke tower and needle coke production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The fresh raw oil mixed with circulating oil enters the coking section 5 of the delayed coking tower from the upper feeding port 9 after being heated by the coking heating furnace; the other circulating oil also enters the delayed coking tower from the lower feeding port 10 after being heated by the coking heating furnace The packing section 6, and the circulating oil enters the coking section 5 through the mesh 21 on the baffle plate 7. The coking heating furnace is controlled by a variable temperature program. The initial temperature is 430°C for 4 hours, and then the temperature is raised to 470°C at a rate of 4°C / h. The mass of the circulating oil is 20%, that is, the circulation ratio is 0.5 at this time, and the pressure at the top of the delayed coking tower is 1.5MPa; the feed is fed at a constant temperature at 470°C for 4 hours, and the mass of the circulating oil in the lower feed port 10 is raised to 50% at the same time , that is, the circulation ratio is 0...

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PUM

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Abstract

The present invention relates to a novel coke tower and a needle coke production method. The coke tower includes a cylinder, an upper end socket and a lower end socket. The upper end socket is provided with a decoking port; the cylinder is provided with a coking segment and a filler segment; a baffle plate is between the coking segment and the filler segment; a feed inlet is arranged in the center of the baffle plate; the lower end socket is provided with an upper feed port and a lower feed port; the upper feed port communicates with the feed inlet of the baffle plate through a feed tube; and the lower feed port communicates with the filler segment. The invention also provides a needle coke production method, which employs the coke tower for production of needle coke. The needle coke prepared by the coke tower and process has strong needle texture structure.

Description

technical field [0001] The invention relates to a method and a device for preparing needle coke, in particular to a coking tower and a process for producing needle coke by adopting a delayed coking process. Background technique [0002] Needle coke is the main material for the production of high-power and ultra-high-power graphite electrodes. At present, the needle coke used in domestic production of ultra-high-power graphite electrodes mainly relies on imports. From the appearance, the imported needle coke has a very good silver-gray metallic luster and has an excellent streamlined structure; observed under a polarizing microscope, the imported needle coke is almost anisotropic fibers on the section parallel to the streamline direction shape. The physical and chemical properties of needle coke have a certain relationship with its fiber structure. Compared with domestic needle coke, imported needle coke has better electrical and thermal conductivity, lower thermal expansion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/14C10G9/18
Inventor 郭丹初人庆勾连忠矫德卫
Owner CHINA PETROLEUM & CHEM CORP
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