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Method of mild hydrocracking raw material heavy oil

A technology for hydrocracking and heavy raw materials, applied in the field of hydrocarbon oil cracking, can solve the problems of fractional distillation of raw materials, high investment, increased equipment and energy consumption, etc.

Inactive Publication Date: 2005-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent basically belongs to the "parallel flow" process, but the raw materials need to be fractionated, the equipment and energy consumption increase a lot, and the investment is too high

Method used

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  • Method of mild hydrocracking raw material heavy oil

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Embodiment

[0046] The process flow of this embodiment is the hydrocracking process of the present invention, that is, the raw material is first contacted with the hydrotreating catalyst, and the light gas oil (distillation range 370-420°C) obtained by separating the hydrotreating reaction effluent is then mixed with the The hydrocracking catalyst is contacted, and the hydrotreating reaction effluent is de-separated together with the hydrocracking reaction effluent.

[0047] According to the program operation with a conversion rate of 40m%, the operating conditions are listed in Table 2; the yield of main products and chemical hydrogen consumption are listed in Table 3; the properties of main products are listed in Table 4. It can be seen from Table 2-4 that the hydrocracking process of the present invention can not only obtain Class II diesel oil and FCC feedstock with a sulfur content lower than 1000ppm, but also have a total space velocity of up to 0.70h -1 , higher than the space velo...

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Abstract

This invention provides a mild hydrogen cracking of heavy fraction. The raw material heavy fraction and hydrogen are contacted with hydrogenating catalyst, the effluent is then mixed with the effluent of hydrogen cracking reaction, proceeding high pressure separation to obtain a gas flow and a liquid flow; the gas flow rich in hydrogen, after compressed being circled-back to hydrogenating unit; liquid flow, after separation, to obtain naphtha cut, diesel cut, light gas oil and tail-oil, light gas oil and hydrogen being contacted with hydrogen cracking catalyst; said effluent being mixed with the effluent from hydrogenating reaction to proceed separation. By using this invention method, excellent catalytic cracking raw material is obtained from heavy fraction oil, with low hydrogen consumption, producing by-product diesel being met with type II standard of diesel, and the volume of reactor being reduced greatly.

Description

technical field [0001] The invention belongs to a hydrocarbon oil cracking method for obtaining low-boiling fractions in the presence of hydrogen, more specifically, it belongs to a mild hydrocracking method for heavy raw materials. Background technique [0002] With worldwide demand for motor fuel rising and demand for heavy fuel oil falling, refiners are increasing the depth of crude oil processing. One of the most beneficial measures is to modify the vacuum tower of crude oil distillation, increase the extraction rate of vacuum gas oil (VGO), and improve the properties of vacuum residue through solvent deasphalting, and then rely on the subsequent secondary Process cracking units to produce light oil products. The most important and mature processing method for the lightening of heavy vacuum gas oil (HVGO) and deasphalted oil (DAO) is catalytic cracking (FCC) technology. [0003] In order to reduce the pollution of the environment caused by the em...

Claims

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Application Information

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IPC IPC(8): C10G47/16
Inventor 熊震霖石玉林胡志海王子文毛以朝董松涛
Owner CHINA PETROLEUM & CHEM CORP
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