Optimized hydrogenation-catalytic cracking combination process

A catalytic cracking and catalyst technology, applied in hydroprocessing process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problem of reducing the processing capacity of catalytic cracking unit and the yield of gasoline and diesel products, unsatisfactory cracking effect, increasing regenerator load, etc. problems, achieve flexible product solutions, reduce equipment investment and operating costs, and increase yields

Active Publication Date: 2010-03-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

On the other hand, in order to increase the conversion rate and light oil yield of catalytic cracking, the heavy cycle oil (HCO) produced by the catalytic unit is usually circulated in the catalytic cracking unit itself, but due to the high content of HCO aromatics, its cracking effect is not Not ideal, a large part of HCO is converted into coke, which increases the regenerator load, reduces the processing capacity of the catalytic cracking unit and the yield of gasoline and diesel products

Method used

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  • Optimized hydrogenation-catalytic cracking combination process
  • Optimized hydrogenation-catalytic cracking combination process

Examples

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Embodiment

[0054] The following examples will further illustrate the method provided by the present invention, but do not limit the present invention thereby.

[0055] In the examples, the feedstock for the reaction zone of the hydrotreatment of inferior wax oil is high-sulfur vacuum wax oil, and its properties are listed in Table 1. The raw material of fresh diesel oil in the hydroreforming reaction zone is straight diesel mixed oil, and its properties are listed in Table 2. The hydrotreating reaction zone is loaded with commercial catalyst combinations of RG-10A / RG-10B / RMS-1 / RN-32V respectively, and the loading volume ratio is 4:4:15:77. The hydrogenation-upgrading reaction zone is loaded with a commercial catalyst combination of RG-1 / RN-32 / RIC-2 / RN-32, and the loading volume ratio is 8:50:34:8. The grade of the catalyst used in the catalytic cracking process is CGP-2, and the above catalysts are all produced by Sinopec Catalyst Branch.

[0056] Tables 3 to 5 are the process conditio...

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Abstract

The invention relates to an optimized hydrogenation-catalytic cracking combination process, comprising the following steps: wax oil raw materials react in a hydrotreating reaction area; obtained hydrogenation wax oil is taken as catalytic cracking raw oil and directly enters a catalytic cracking unit without being fractionated; catalytic heavy cycle oil circulates back the hydrotreating reaction area; gas phase material flow at the top of a high-pressure hot separator, catalytic light cycle oil and optional crude diesel oil enter a hydrogenation upgrading reaction area carry out hydrogenationupgrading reaction; and reaction products thereof are fractionated to obtain hydrogenation naphtha and hydrogenation diesel. A hydrotreating unit and a hydrogenation upgrading unit shares a hydrogensystem, the device investment and operation cost are lowered, the product scheme is flexible, and high-quality low-sulphur gasoline, high-quality diesel and reforming raw materials can be produced atthe same time.

Description

technical field [0001] The invention belongs to a method for treating hydrocarbon oil with a hydrotreating process and an other conversion step, more specifically, an optimized hydrotreating-catalytic cracking combined process. Background technique [0002] With the increasing scarcity of oil resources and the tendency of crude oil to become heavier and worse, how to use limited resources to produce light products with high demand has become a hot spot in the development of oil refining technology. Refining technology that can improve the yield and quality of target products has become the choice of many refineries. [0003] In the processing flow of the refinery, the main technical means to realize the conversion of heavy oil are catalytic cracking, hydrocracking and coking. In my country, catalytic cracking has been widely used due to its good operational flexibility, high gasoline yield and low one-time investment. On the other hand, due to the needs of environmental pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
Inventor 蒋东红胡志海张毓莹龙湘云辛靖许友好
Owner CHINA PETROLEUM & CHEM CORP
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