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Method for producing crude white oil

A white oil and coarse white technology, applied in the field of crude white oil production, can solve the problems of raw material source limitation, impact on process cost, low impurity content and other problems in the production of white oil, and achieve broad raw material sources, high added value of products, and significant economic benefits Effect

Active Publication Date: 2019-12-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] It can be seen from the above method that under the existing technical conditions, the production of white oil by one-stage process requires the use of high-quality raw material oil with low impurity content. There are great restrictions on the source of raw materials, which affect the process cost

Method used

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  • Method for producing crude white oil
  • Method for producing crude white oil
  • Method for producing crude white oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] refer to figure 1 The flow shown processes coal tar fraction feedstock A. The raw material A first enters the hydrofinishing reaction zone and contacts with the hydrofinishing catalyst D to carry out the hydrofinishing reaction, and the hydrofinishing product is separated into naphtha (distillation range: <165°C), crude white oil (distillation range: 165-350°C ), and hydrogenated tail oil (initial boiling point is 350°C, aromatics content is 12.4% by weight). 90% by weight of the hydrogenated tail oil enters the hydrocracking reaction zone (the weight ratio of the hydrogenated tail oil entering the hydrocracking reaction zone to the raw material A is 1.7) and contacts with the hydrocracking catalyst F to carry out the hydrocracking reaction, The hydrocracked product is mixed with the hydrorefined product for product separation. The obtained crude white oil was further fractionated to obtain No. 3 crude white oil and No. 5 crude white oil. The reaction conditions, pro...

Embodiment 2

[0075] refer to figure 1 The flow shown processes coal tar fraction feedstock B. The raw material B first enters the hydrofinishing reaction zone and contacts with the hydrofinishing catalyst E to carry out the hydrofinishing reaction, and the hydrofinishing product is separated into naphtha (distillation range: <165°C), crude white oil (distillation range: 165-350°C ), and hydrogenated tail oil (initial boiling point is 350°C, aromatics content is 14.9% by weight). 75% by weight of the hydrogenated tail oil enters the hydrocracking reaction zone (the weight ratio of the hydrogenated tail oil entering the hydrocracking reaction zone to the raw material B is 1.3) and contacts with the hydrocracking catalyst F to carry out the hydrocracking reaction, The hydrocracked product is mixed with the hydrorefined product for product separation. The obtained crude white oil was further fractionated to obtain No. 3 crude white oil and No. 5 crude white oil. The reaction conditions, pro...

Embodiment 3

[0077] refer to figure 1 The process shown processes the coal tar fraction feedstock C. The raw material C first enters the hydrofinishing reaction zone and contacts with the hydrofinishing catalyst E to carry out the hydrofinishing reaction, and the hydrofinishing product is separated into naphtha (distillation range: <165°C), crude white oil (distillation range: 165-350°C ), and hydrogenated tail oil (initial boiling point is 350°C, aromatics content is 13.6% by weight). 99% by weight of the hydrocracking tail oil enters the hydrocracking reaction zone (the weight ratio of the hydrogenation tail oil entering the hydrocracking reaction zone to the raw material C is 1.5) contacts with the hydrocracking catalyst G to carry out the hydrocracking reaction, The hydrocracked product is mixed with the hydrorefined product for product separation. The obtained crude white oil was further fractionated to obtain No. 3 crude white oil and No. 5 crude white oil. The reaction conditions...

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Abstract

The invention relates to a method for producing crude white oil; wherein the method comprises the following steps: a, enabling a coal tar fraction to enter a hydrofining reaction zone to be in contactwith a hydrofining catalyst for hydrofining reaction to obtain a hydrofining product, and performing product separation on the hydrofining product to obtain naphtha, first crude white oil and first hydrogenation tail oil; and b, enabling at least part of the first hydrogenation tail oil to enter a hydrocracking reaction zone to be in contact with a hydrocracking catalyst to carry out hydrocracking reaction to obtain a hydrocracking product, and carrying out product separation on the hydrocracking product to obtain naphtha, second crude white oil and second hydrogenation tail oil. According tothe method, inferior and cheap coal tar fractions can be converted into crude white oil products with high additional values.

Description

technical field [0001] The present disclosure relates to a method of producing crude white oil. Background technique [0002] Crude white oil is the raw material for the production of finished white oils such as industrial white oil and cosmetic white oil. The crude white oil can be obtained through deep hydrotreating and fraction cutting to obtain finished white oil. The finished white oil is widely used in industrial production, cosmetics, food and medicine. With the development of the economy and the improvement of living standards, people's consumption demand and quality requirements for white oil products are gradually increasing. Crude white oil is one of the raw materials for producing white oil products, and its properties are closely related to the quality of white oil products. In order to ensure the stability of the quality of finished white oil, the National Energy Administration promulgated the "Crude White Oil" (NB / SH / T0914-2015) quality standard in October 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
CPCC10G65/02C10G2400/14
Inventor 赵广乐莫昌艺赵阳戴立顺
Owner CHINA PETROLEUM & CHEM CORP
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