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Combined hydrogenation method of producing diesel oil with high cetane number and low solidifying point

A technology for the production of high cetane and combined methods, which is applied in the field of hydrogenation to increase the cetane number of diesel oil and reduce the freezing point of diesel oil, and can solve the problems of lowering the freezing point of diesel oil and not being able to increase the cetane number of diesel oil at the same time

Inactive Publication Date: 2003-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The problem in the above-mentioned prior art is that the cetane number of diesel and the freezing point of diesel cannot be increased at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The raw material oil A is mixed with hydrogen at a hydrogen partial pressure of 6.4MPa, a reaction temperature of 360°C, and a liquid hourly space velocity of LHSV of 1.2hr -1 , Hydrogenation and upgrading catalyst RIC-1 (produced by Sinopec Changling Refining and Chemical Co., Ltd. Catalyst Factory) under the condition of hydrogen oil ratio of 700v / v, the reaction effluent does not separate hydrogen sulfide and ammonia, and the hydrogen partial pressure 6.4MPa, reaction temperature 360℃, liquid hourly space velocity LHSV 2.0hr -1 1. Under the condition of hydrogen-to-oil ratio 700v / v, contact with the hydrodepointing catalyst RDW-1 (produced by Sinopec Changling Refinery and Chemical Co., Ltd. Catalyst Factory, the following comparative examples are the same as the hydrodepointing catalyst used in the examples). The reaction effluent from the hydrogen decondensation section is cooled and enters the high-pressure separator, and the separated liquid product enters the fr...

Embodiment 2

[0042] The raw material oil B is mixed with hydrogen at a hydrogen partial pressure of 6.4MPa, a reaction temperature of 350°C, and a liquid hourly space velocity of LHSV of 1.2hr -1 1. Contact with hydrocracking catalyst RT-1 (produced by Sinopec Changling Refining and Chemical Co., Ltd. Catalyst Factory) under the condition of hydrogen oil ratio of 700v / v, the reaction effluent does not separate hydrogen sulfide and ammonia, and the hydrogen partial pressure is 6.4 MPa, reaction temperature 335°C, liquid hourly space velocity LHSV 2.0hr -1 1. Under the condition of hydrogen oil ratio 700v / v, contact with hydrogen decondensation catalyst RDW-1. The reaction effluent from the hydrogen decondensation section is cooled and enters the high-pressure separator, and the separated liquid product enters the fractionation system, and the hydrogen-rich hydrogen is recycled back to the reactor.

[0043] Process conditions, product distribution and product properties are listed in Table ...

Embodiment 3

[0045] The raw material oil B is mixed with hydrogen at a hydrogen partial pressure of 6.4MPa, a reaction temperature of 350°C, and a liquid hourly space velocity of LHSV of 1.2hr -1 、Contact with hydrocracking catalyst RT-1 under the condition of hydrogen oil ratio of 700v / v, the reaction effluent does not separate hydrogen sulfide and ammonia, under hydrogen partial pressure of 6.4MPa, reaction temperature of 340℃, liquid hourly space velocity LHSV of 2.0hr -1 1. Under the condition of hydrogen oil ratio 700v / v, contact with hydrogen decondensation catalyst RDW-1. The reaction effluent from the hydrogen decondensation section is cooled and enters the high-pressure separator, and the separated liquid product enters the fractionation system, and the hydrogen-rich hydrogen is recycled back to the reactor.

[0046] Process conditions, product distribution and product properties are listed in Table 3. It can be seen from Table 3 that the cetane number of the diesel product is 41...

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Abstract

The combined hydrogenation method of producing diesel oil with high cetane number and low solidifying point includes contacting the raw material oil and hydrogen with hydrogenating upgrading catalystor hydrogenating cracking catalyst first, contacting the unseparated reaction effluent with pour point reducing hydrocatalyst feeding the cooled reaction product into high pressure separator to separate liquid product further flowing to the fractionating system and returning the hydrogen-rich gas to reactor. The said method can raise the cetane number of diesel oil and lower the solidifying pointsimultaneously in the same equipment.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a hydrogenation method for increasing the cetane number of diesel oil and lowering the freezing point of diesel oil. Background technique [0002] With the increasing awareness of environmental protection around the world, many countries have established strict standards for petroleum products, especially for engine fuels. my country is no exception. In addition to the new gasoline and diesel product specifications that have been released, it is foreseeable that there will be faster product upgrades in the near future. For diesel products, the changes in sulfur content and cetane number in the quality indicators are the first to bear the brunt. [0003] In addition, with the rapid development of my country's economy, social economic behavior in winter is becoming more and more active, and the market demand for low-poin...

Claims

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Application Information

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IPC IPC(8): C10G35/00
Inventor 胡志海石玉林张晓辉熊震霖王子文门卓武康小洪
Owner CHINA PETROLEUM & CHEM CORP
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