Method for coal tar hydrogenation for producing low solidifying point diesel oil

A technology for coal tar and diesel oil, which is used in tar processing by distillation, petroleum industry, preparation of liquid hydrocarbon mixtures, etc., can solve the problem of not considering performance indicators, etc., and achieve good synergistic catalysis, stable operation and good stability. Effect

Active Publication Date: 2009-11-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent only emphasizes the desulfurization effect on raw materials, without considering other performance indicators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Under the process conditions of Example 1, No.-30 diesel oil blending component can be produced, and compared with the raw material, the cetane number has increased by 21.9 units.

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Abstract

The invention relates to a method for producing diesel oil through hydrogenation modification, modification, isomerization and decondensation of coal tar. Separating coal tar into residual oil and distillate oil, using distillate oil as raw material, adopting a single-stage or series process flow, under suitable operating conditions, distillate oil raw material and hydrogen pass through the catalyst bed to obtain low freezing point diesel products And a small amount of naphtha products with low sulfur and nitrogen content. It is characterized in that the catalyst bed includes a hydrogenation treatment catalyst bed containing 0.5-<20wt% of zeolite beta. The key point of this technology is that it can directly provide high-quality diesel products with low freezing point and high cetane number, and at the same time provide a suitable technological route for the rational application of coal tar.

Description

technical field [0001] The invention relates to a method for producing low-condensation diesel oil by hydrogenation of coal tar, which uses a catalyst with strong isomerization function to produce low-condensation diesel oil by using coal tar distillate oil. Background technique [0002] With the rapid development of the world economy, the demand for fuel oil products is increasing, and the quality requirements for oil products are becoming more and more stringent. The world's proven reserves of crude oil can only be used continuously for more than a hundred years based on the current production volume, and the shortage of oil resources is imminent. However, coal reserves are very abundant, so it is a way to use coal to produce vehicle fuel oil products. The main technologies include direct coal liquefaction and coal indirect liquefaction, etc., but these technologies are costly and complex. Another technology for coke production is that the by-product is coal tar while pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C1/14C10G1/08
Inventor 李扬刘继华王震徐大海牛世坤
Owner CHINA PETROLEUM & CHEM CORP
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