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Method for producing good quality diesel oil

A production method and diesel technology, which are applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problem of not being able to lower the freezing point of diesel oil, and achieve good ammonia and acid resistance, high diesel yield, strong diesel oil, etc. Sulfur resistant effect

Inactive Publication Date: 2003-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method provided by this process can deeply saturate aromatics due to the use of noble metal catalysts to meet new environmental protection regulations, but it cannot effectively lower the freezing point of diesel to meet the needs of severe cold regions

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with specific embodiments and comparative examples.

[0036] The raw material oil used in Examples and Comparative Examples is waxy distillate oil, and its properties are shown in Table 1. The process flow adopted in the embodiment embodying the present invention is as follows: the mixed material of raw oil and hydrogen is first contacted with the hydrorefining catalyst, the main purpose is to carry out a series of hydrogenation reactions such as hydrodesulfurization and denitrogenation, and the reaction effluent material is then mixed with Hydrogen decondensation catalyst contact mainly carries out shape-selective cracking reaction, removes waxy components, lowers the freezing point, and further removes impurities such as S and N at the same time. The reacted mixed material enters the gas-liquid separation system, and the H 2 S, NH 3 Removal, separation and removal of H 2 S, NH 3 In the presence ...

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Abstract

A process for preparing high quality diesel oil from poor-qualiry fraction oil includes such steps as hydrorefining, hydro-pour-depressing and arylhydrocarbon saturation. Its advantages are high hexadecame value, low pour point, and low contents of S and arylhydrocarbon.

Description

1. Technical field [0001] The invention relates to a method for producing diesel oil, especially a method for producing high-quality diesel oil with low sulfur, low freezing point, low aromatic content and high cetane number from inferior distillate oil. 2. Background technology [0002] Since the 1980s, the demand for diesel oil has been increasing year by year in all countries in the world. From 1990 to 1999, the annual increase rate of diesel demand reached more than 7.9w%. The increase in demand for diesel oil requires objectively to increase the conversion capacity of residual oil, coupled with the increasingly inferior crude oil resources, resulting in the continuous decline in the quality of distillate oil, the increase in the content of sulfur, nitrogen, and aromatics in the product, affecting engine performance and causing environmental pollution. In addition, most of my country's crude oil is paraffin-based crude oil, and the diesel fraction produced has a lot of w...

Claims

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Application Information

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IPC IPC(8): C10G65/12
Inventor 祁兴维黄新露彭焱吴宜冬刘涛宋永一潘德满田洪良吴子明杨福利
Owner CHINA PETROLEUM & CHEM CORP
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