Method for preparing clean diesel and product thereof

A diesel and clean technology, used in the preparation of liquid hydrocarbon mixtures, petroleum industry, biological raw materials, etc., can solve the problems of short service life of catalysts, high content of aromatic hydrocarbons in raw materials, and high reaction severity, so as to prolong the service life and reduce the severity. , the effect of maintaining activity

Active Publication Date: 2014-12-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is on the basis of prior art, to provide a kind of clean diesel oil preparation method and its product, this method has overcome coal direct liquefied diesel oil and / or coal tar when separately hydrogenation, raw material aromatic hydrocarbon content is high, reaction severity High, high hydrogen consumption and short service life of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0026] The raw materials used in the examples are coal liquefied diesel fractions and palm oil. The properties of coal liquefied diesel are shown in Table 1, and the composition of palm oil is shown in Table 2. The catalyst used is a hydrotreating catalyst with a brand name of RN-10, a product of Sinopec Corporation. Produced by Catalyst Changling Branch.

[0027] After the mixed raw material of coal liquefied diesel fraction and palm oil is heated together with hydrogen, based on the mixed raw material, palm oil is 10% by weight in Example 1, 20% by weight in Example 2, and 20% by weight in Example 3. Palm oil is 30% by weight. The mixed raw materials enter the fixed-bed hydrogenation reactor equipped with a hydrogenation catalyst, and react under certain hydrogenation reaction conditions. The reaction product is cooled, separated and fractionated to obtain a diesel product. Process conditions and the properties of the products obtained are shown in Table 3.

[0028] It can...

Embodiment 4～6

[0036] The raw materials used in the examples are diesel fraction and palm oil obtained from coal dry distillation. The properties of the diesel fraction obtained from coal dry distillation are shown in Table 1, and the composition of palm oil is shown in Table 2. The catalyst used is a hydrotreating catalyst. Co., Ltd. Catalyst Changling branch production.

[0037] After the mixed raw material of coal liquefied diesel fraction and palm oil is heated together with hydrogen, based on the mixed raw material, the palm oil is 40% by weight in Example 4, and the palm oil is 50% by weight in Example 5. Palm oil is 60% by weight. The mixed raw materials enter the fixed-bed hydrogenation reactor equipped with a hydrogenation catalyst, and react under certain hydrogenation reaction conditions. The reaction product is cooled, separated and fractionated to obtain a diesel product. Process conditions and the properties of the products obtained are shown in Table 4.

[0038] It can be se...

Embodiment 7

[0042] The raw materials used in the examples are coal liquefied diesel oil fraction and refined soybean oil. The properties of coal liquefied diesel oil are shown in Table 1, and the composition of refined soybean oil is shown in Table 2. The catalyst used is a hydrotreating catalyst. Co., Ltd. Catalyst Changling branch production.

[0043] After heating the mixed raw material of coal liquefied diesel fraction and refined soybean oil together with hydrogen, based on the mixed raw material, the refined soybean oil is 30% by weight. The mixed raw materials enter the fixed-bed hydrogenation reactor equipped with a hydrogenation catalyst, and react under certain hydrogenation reaction conditions. The reaction product is cooled, separated and fractionated to obtain a diesel product. Process conditions and the properties of the products obtained are shown in Table 5.

[0044] It can be seen from Table 5 that the cetane index of the diesel product is 52, the sulfur content is 33 μg...

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Abstract

The invention discloses a method for preparing clean diesel and a product thereof. In the existence of hydrogen, the mixed raw material of coal-prepared diesel fraction and vegetable oil and / or animal fat is contacted with hydrotreating catalyst for hydrotreating reaction, and the clean diesel product can be obtained through cooling, separating and fractionating the reaction effluent, wherein the mixed raw material is used as reference, and the coal-prepared diesel fraction accounts for 1-99% by mass. According to the method, the clean diesel product is prepared by taking the mixture of the diesel fraction obtained by direct coal liquefaction diesel including coal tar, the renewable vegetable oil and the animal fat as the raw material, thereby overcoming the defects of high aromatics content of the raw material, high reaction severity, high hydrogen consumption and short service life of the catalyst during independent hydrogenation of the direct coal liquefaction diesel and / or the coal tar.

Description

technical field [0001] The invention relates to a production method for preparing clean diesel oil in the presence of hydrogen and its products. More specifically, it is a method for preparing clean diesel oil by mixing diesel fractions prepared from coal with vegetable oil and / or animal fat and its products. Background technique [0002] Out of the requirements of environmental protection, countries around the world have formulated more stringent fuel standards, requiring oil refining companies to produce fuel oil with lower emissions of toxic and harmful substances. Among them, the European Union's Euro III standard requires that the density of diesel oil not exceed 0.845 g / cm 3 , the sulfur content is not more than 350 μg / g, the cetane number index is not lower than 46, and the polycyclic aromatic hydrocarbon content is less than 11% by weight. In the Euro IV standard, the density of diesel oil is required to be no more than 0.845g / cm 3 , the sulfur content is not more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/02C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 赵阳董建伟孟祥堃胡志海蒋东红张毓莹吴昊
Owner CHINA PETROLEUM & CHEM CORP
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