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Method for producing petroleum coke

A petroleum coke and raw material oil technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of being unable to use inferior catalytic cracking oil slurry and produce needle coke, so as to expand the source of raw materials for production and improve The effect of using added value

Active Publication Date: 2015-08-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Existing documents have disclosed some techniques for preparing needle coke by using unconventional raw materials or through combined processes, such as US20050284793, CN1098336C, CN1191321C, US4740293, and US5167796, but none of these techniques can use the above-mentioned inferior catalytic cracking oil slurry to produce needle coke

Method used

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  • Method for producing petroleum coke
  • Method for producing petroleum coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The raw material is catalytic cracking oil slurry, and its properties are listed in Table 1.

[0033]Use a mixed solvent with a mass ratio of butane / toluene of 1:1, mix it with the catalytic cracking oil slurry and stir it at a stirring temperature of 135°C, then set aside to settle at a settling temperature of 115°C and settling time for 18 hours. Non-ideal heavy components containing solid powder, heavy colloids and asphaltenes, and the upper light components are recovered by solvents and used as raw materials for subsequent processes.

[0034] The material distribution after solvent extraction is shown in Table 2. The hydrogenation protection agent adopts the RG-30B catalyst developed by the Chinese Academy of Sciences, and the hydrogenation refining agent adopts the RMS-30 catalyst developed by the Chinese Academy of Sciences, both of which are commercial agents produced by Changling Catalyst Factory of Sinopec Catalyst Branch. The hydrogenation reaction temperatur...

Embodiment 2

[0039] The method and raw materials are the same as those in the examples, except that thermally cracked heavy oil (distillation range 255° C. to 486° C.) is directly used as a raw material for delayed coking. The distribution of coking products is shown in Table 5, and the properties of petroleum coke are shown in Table 6. The results show that the direct coking of thermally cracked heavy oil without distillation cut, the coke yield decreased by 0.39 percentage points, and the CTE value increased by 0.05×10 -6 / °C.

[0040] Table 1 Properties of catalytic cracking oil slurry before and after raw material pretreatment

[0041]

[0042]

[0043] The material distribution of table 2 solvent extraction

[0044] solvent extraction

Yield, w / %

ideal component

88.3

Non-ideal components

11.7

total

100.0

[0045] Table 3 Distribution of delayed coking products

[0046] Coking products

Yield, w / %

coking d...

Embodiment 3

[0055] The raw material is an oil sample mixed in a certain proportion with pretreated catalytic cracking oil slurry and furfural extracted oil. The mixing proportion and properties are listed in Table 7. Among them, the catalytic cracking oil slurry uses a mixed solvent with a mass ratio of pentane / benzene of 1.1:1, mixes with the catalytic cracking oil slurry, stirs, the stirring temperature is 130°C, and then stands for precipitation, the standing precipitation temperature is 110°C, and the standing time is 20h , the non-ideal heavy components rich in solid powder, heavy colloids and asphaltenes in the lower part are separated, and the light components in the upper part are recovered by solvent and are the raw materials for subsequent processes.

[0056] The hydrogenation protection agent adopts the RG-30B catalyst developed by the Chinese Academy of Sciences, and the hydrogenation refining agent adopts the RMS-30 catalyst developed by the Chinese Academy of Sciences, both o...

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Abstract

The invention relates to a method for producing petroleum coke. The method utilizes high-sulfur, high-ash and high-asphalt inferior catalytic cracking oil slurry as a raw material and utilizes a solvent extraction-hydrofinishing-thermal cracking-reduced pressure distillation-delay coking combined technology to produce high-quality petroleum coke.

Description

technical field [0001] The invention relates to a method for producing petroleum coke, more specifically, a method for producing high-quality petroleum coke by using inferior catalytic cracking oil slurry as raw material. Background technique [0002] Needle coke (referred to as needle coke) has the advantages of low thermal expansion coefficient (hereinafter referred to as CTE), low porosity, low sulfur, low ash, low metal content, high conductivity and easy graphitization, etc., because of its needle-like appearance Or fibrous texture structure, so it is called needle coke. [0003] Needle coke is widely used in national defense and metallurgical industry, among which the largest amount is used in metallurgical industry. In recent years, with the rapid development of domestic electric furnace steelmaking industry and the progress of graphite electrode production technology, the demand for needle coke has increased significantly. At present, the annual output of domestic ...

Claims

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Application Information

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IPC IPC(8): C10G67/04
Inventor 范启明申海平王子军刘自宾阎龙
Owner CHINA PETROLEUM & CHEM CORP
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