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Hydroprocessing method of catalytic cracking heavy cycle oil, processing method of raw materials for producing needle coke, and method for producing needle coke

A heavy cycle oil and catalytic cracking technology, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, coking carbonaceous materials, etc., can solve the problems of increasing hydrogen carrying capacity, achieve good hydrogenation effect, reduce operating costs, and improve operation efficiency effect

Active Publication Date: 2015-09-23
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] An object of the present invention is to overcome the technical problem that the existing liquid-phase hydrogenation method requires the use of diluent or cycle oil to increase the hydrogen carrying capacity, and to provide a hydroprocessing method for catalytic cracking heavy cycle oil, which can be used even without diluent and / or cycle oil, can also provide a sufficient source of hydrogen for hydrotreating in the liquid phase

Method used

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  • Hydroprocessing method of catalytic cracking heavy cycle oil, processing method of raw materials for producing needle coke, and method for producing needle coke
  • Hydroprocessing method of catalytic cracking heavy cycle oil, processing method of raw materials for producing needle coke, and method for producing needle coke
  • Hydroprocessing method of catalytic cracking heavy cycle oil, processing method of raw materials for producing needle coke, and method for producing needle coke

Examples

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Embodiment 1

[0093] The properties of the catalytically cracked heavy cycle oil used in this example are listed in Table 3.

[0094] This embodiment adopts Figure 5 The process shown hydrotreats catalytically cracked heavy cycle oil. Among them, the structure of the gas-liquid mixer is as follows: Figure 4 As shown, the structure of the member used to adjoin the liquid channel and the gas channel in the gas-liquid mixer is a pipe formed by a porous material (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; 19 channels are evenly distributed on the pipe, each The inner diameter of each channel is 3.3mm, the average pore diameter of the pores on the tube wall is 50nm, the number of pores with a pore diameter in the range of 50-55nm accounts for 98% of the total number of pores, and the porosity of the tube wall is 20%); The channel on the pipe is used as a liquid channel, the space formed by the outer wall of the pipe and the inner wall of the shell ...

Embodiment 2

[0101] The catalytic cracking heavy cycle oil is hydrotreated in the same manner as in Example 1, the difference is that the hydrogen-containing heavy cycle oil is fed from the top of the tubular reactor, and hydrogenation is carried out under the conditions listed in Table 1. Catalyst contacts, hydrogenation reaction is carried out, and hydrogenation produces oil at the bottom of the tubular reactor, and its properties are listed in Table 3.

Embodiment 3

[0103] The catalytic cracking heavy cycle oil was hydrotreated by the same method as in Example 2, except that the reaction conditions were shown in Table 2.

[0104] The properties of the resulting hydrotreated oils are listed in Table 3.

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Abstract

The invention provides a hydroprocessing method of catalytic cracking heavy cycle oil. The hydroprocessing method comprises the following steps of: sending hydrogen into the catalytic cracking heavy cycle oil through holes of which the average hole size is in nanometer sizes so as to obtain hydrogen-containing heavy cycle oil; sending the obtained hydrogen-containing heavy cycle oil into a tubular reactor, and enabling the hydrogen-containing heavy cycle oil to be in contact with a hydrogenation catalyst filled in the tubular reactor under liquid phase hydrogenation processing conditions. The invention further provides a processing method for producing raw materials of needle coke. The invention further provides a method for producing the needle coke. According to the hydroprocessing method disclosed by the invention, even if a diluting agent and / or cycle oil are / is not used, the hydrogen can also be highly dispersed and dissolved in the catalytic cracking heavy cycle oil, enough hydrogen sources are provided for hydroprocessing, and the efficient processing quantity for a hydroprocessing device is increased. In addition, the hydroprocessing method disclosed by the invention can effectively remove metal, sulfur and asphalt substances in the catalytic cracking heavy cycle oil, so that the raw materials conforming to the needle coke for producing ultra-high power electrodes are obtained.

Description

technical field [0001] The present invention relates to a method for hydrotreating catalytic cracking heavy cycle oil, and also relates to a method for processing raw materials for producing needle coke, and further relates to a method for producing needle coke. Background technique [0002] Needle coke is a high-quality material for manufacturing high-end carbon products such as ultra-high power electrodes, special carbon materials, carbon fibers and their composite materials. It has small resistivity, low thermal expansion coefficient, good graphitization performance, high mechanical strength, and good oxidation resistance. , Low consumption and other advantages. Needle coke graphitized products are widely used in the fields of electric furnace steelmaking electrodes, nuclear reactor deceleration materials and rocket technology, and have special uses and significance in the defense industry and civilian industry. Needle coke can be divided into oil-based needle coke and c...

Claims

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Application Information

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IPC IPC(8): C10G45/04C10G65/04C10G65/16C10G67/02C10B55/00
Inventor 李华刘建平佘喜春贺晓军李庆华陈庆岭江磊刘呈立曾志煜杨清贫
Owner CHINA PETROLEUM & CHEM CORP
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