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Method for treating residual oil by combined process

A combined process and residual oil technology, which is applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve the problems that cannot fundamentally change the pressure drop growth trend of the pre-reactor, unfavorable stable operation of the device, etc.

Active Publication Date: 2017-05-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method alleviates the increase in pressure drop by changing the loads of each anti-feed, but cannot fundamentally change the growth trend of the pre-reactor pressure drop. From the point of view of actual industrial operation, once the pressure drop starts to increase, it will quickly reach the design upper limit. Moreover, changing the feeding of each reverse inlet is not conducive to the stable operation of the device.

Method used

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  • Method for treating residual oil by combined process
  • Method for treating residual oil by combined process
  • Method for treating residual oil by combined process

Examples

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Effect test

Embodiment 1

[0071]The hydrogenation pretreatment reactor A described in embodiment 1, the hydrogenation pretreatment reactor B, and the hydrogenation pretreatment reactor C residual oil feed all adopt raw material A, and the properties are shown in Table 1, and 30% of the catalytic cracking unit will be FCC gasoline and all FCC heavy cycle oil are recycled to the hydrotreating reaction zone, and their properties are shown in Table 2. Among them, the FCC heavy cycle oil is all distributed to hydropretreatment reactor A, the proportion of FCC gasoline distributed to hydropretreatment reactor B is 10%, and the proportion of FCC gasoline distributed to hydropretreatment reactor C is 20%. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, Catalysts in Hydrogenation Pretreatment Reactor B, Hydrogenation P...

Embodiment 2

[0073] In embodiment 2, all adopt residual oil raw material B in the described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C, the catalytic cracking gasoline of 30% with catalytic cracking unit and All the catalytic cracking heavy cycle oil is recycled to the hydrogenation pretreatment reaction zone, in which the catalytic cracking heavy cycle oil is all distributed to the hydrogenation pretreatment reactor A, and the proportion of the catalytic cracked gasoline distributed to the hydrogenation pretreatment reactor B is 15% , The proportion of catalytically cracked gasoline distributed to hydropretreatment reactor C is 15%. The space velocity of each reverse feed is different, and the volume space velocity of liquid A in the hydrogenation pretreatment reactor is 0.20h -1 , the hourly volumetric space velocity of liquid B in the hydrogenation pretreatment reactor is 0.32h -1 , the volumetric space velocity of l...

Embodiment 3

[0075] In Example 3, the raw material A is used in the hydrogenation pretreatment reactor A, the raw material B is used in the hydrogenation pretreatment reactor B, and the raw material C is used in the hydrogenation pretreatment reactor C. The properties of the residual oil raw materials used are shown in the table 1. Recycle 50% of the catalytic cracking gasoline and all the catalytic cracking heavy cycle oil in the catalytic cracking unit to the hydrogenation pretreatment reaction zone, in which the catalytic cracking heavy cycle oil is all distributed to the hydrogenation pretreatment reactor A and to the hydrogenation pretreatment reactor The proportion of FCC gasoline in hydrogen pretreatment reactor B is 25%, and the proportion of FCC gasoline allocated to hydropretreatment reactor C is 25%. The feed amount of described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C is the same, and described hydrogenation...

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Abstract

The invention discloses a method for treating residual oil by a combined process; and a hydrogenation pretreatment reaction zone, a hydrotreating reaction zone and a catalytic cracking reaction zone are included. The method comprises the following steps: mixing a residual oil raw material and hydrogen, successively passing the mixture through the hydrogenation pretreatment reaction zone and the hydrotreating reaction zone which are connected in series; conducting gas-liquid separation on the reaction effluent from the hydrotreating reaction zone; recycling the gas phase to the hydrogenation pretreatment reaction zone and / or the hydrotreating reaction zone; sending the liquid phase directly into the catalytic cracking reaction zone and conducting a catalytic cracking reaction; and separating the effluent obtained by the catalytic cracking reaction to obtain dry gas, liquefied gas, a catalytic cracking gasoline fraction, a catalytic cracking diesel oil fraction, catalytic cracking heavy cycle oil and catalytic cracking slurry oil, wherein the catalytic cracking gasoline and the catalytic cracking heavy cycle oil are partially or completely recycled into the hydrotreating reaction zone for a hydrotreating reaction. The method provided by the invention can extend the stable operation period of the device.

Description

technical field [0001] The invention relates to a method for lightening heavy oil, in particular to a method for treating residual oil by adopting a combined hydrogenation-catalysis process. Background technique [0002] At present, the demand for gasoline, coal, diesel and other oil products, especially the demand for motor gasoline in the domestic and foreign oil product markets will continue to rise, while the demand for heavy fuel oil and other heavy oil products will show a downward trend. At the same time, the properties of crude oil are deteriorating day by day on a global scale, environmental protection regulations are becoming stricter, and increasingly stringent requirements are put forward for the quality of oil products. Therefore, how to realize the lightening of heavy oil and the continuous upgrading of the quality of gasoline and diesel products at a more economical and reasonable cost has become the focus of domestic and foreign refining industries. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/1077
Inventor 刘铁斌耿新国翁延博李洪广
Owner CHINA PETROLEUM & CHEM CORP
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