Flexible hydrocracking process
A technology of hydrocracking and hydroisomerization cracking, which is applied in the fields of hydrotreating process, petroleum industry, hydrocarbon oil treatment products, etc. It can solve the problems of poor operation flexibility and achieve the effect of high viscosity index and low freezing point
Active Publication Date: 2019-07-09
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
Therefore, when using the above hydrocracking processes alone, you can only choose different types of hydrocracking catalysts according to your needs, or use two molecular sieve composite catalysts, or use two kinds of hydrocracking catalysts in grades, but these processes only It can produce tail oil products of one nature, that is, the operation flexibility is relatively poor
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Embodiment 1-3
[0045] Protective agents FZC-100, FZC-105 and FZC106 are hydrogenation protective agents developed and produced by Sinopec Fushun Petrochemical Research Institute; catalyst FF-56 is developed and produced by Sinopec Fushun Petrochemical Research Institute Hydrotreating catalyst; Catalyst FC-32 is a hydrogenation upgrading catalyst developed and produced by Fushun Petrochemical Research Institute of China Petrochemical Corporation, containing Y-type molecular sieve; Catalyst FC-20 is a research and development product of Fushun Petrochemical Research The hydroisomerization cracking catalyst developed and produced by the Institute contains β-type molecular sieves.
[0046] Table 1 Main properties of wax oil feedstock
[0047]
[0048] Table 2 process conditions
[0049]
[0050] Continued Table 2 Process Conditions
[0051]
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The invention discloses a flexible hydrocracking process. A wax oil raw material is subjected to hydrogenation pretreatment and then enters a hydrocracking reactor, and the material passing through afirst hydrocracking catalyst bed layer is divided into two streams; one material stream is separated, the obtained liquid is pumped out of the hydrocracking reactor, and mixed with hydrogen and the mixture then enters a hydroisomerization cracking reactor to be subjected to an isomerization cracking reaction; the other material mixture stream flows downwards through a second hydrocracking catalystbed layer; and an obtained hydrocracking reaction product and an obtained hydroisomerization cracking reaction product are subjected to gas-liquid separation and fractionation separately to obtain naphtha, aviation kerosene, diesel oil and tail oil products with different specifications. The invention provides the hydrocracking process for simultaneously producing more than two different-specification light naphtha, heavy naphtha, aviation kerosene, diesel oil and tail oil products on one set of hydrogenation process equipment for the first time, heat carried by part of cracked materials canbe fully utilized, and coupling operation of the hydrocracking reactor and the hydroisomerization cracking reactor can be realized.
Description
technical field [0001] The invention belongs to the field of petroleum refining, and in particular relates to a hydrocracking process for flexibly producing high-quality light naphtha, heavy naphtha, jet fuel, diesel oil and tail oil products with different properties. Background technique [0002] Hydrogenation technology is an important processing method for lightening heavy oil and upgrading the quality of light oil. Hydrocracking technology has developed rapidly due to the advantages of strong feed oil adaptability, good product flexibility, high liquid product yield, and high product quality. The existing hydrocracking technology can be divided into three types according to the processing flow: one-stage series hydrocracking process, single-stage hydrocracking process and two-stage hydrocracking process. According to whether the tail oil is recycled or not, it can be divided into three types: one-way one-pass process, partial cycle process and full cycle process. Hydr...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/1037C10G2300/202C10G2300/70C10G2400/04C10G2400/10
Inventor 刘涛关明华李宝忠白振民宣根海王凤来
Owner CHINA PETROLEUM & CHEM CORP