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Process for treating inferior oil

A technology for treating process and oil products, which is applied in the field of heavy oil treatment by hydrogenation-catalysis combined process, which can solve the problems of unfavorable device stable operation and unable to fundamentally change the pressure drop growth trend of the pre-reactor

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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  • Process for treating inferior oil
  • Process for treating inferior oil
  • Process for treating inferior oil

Examples

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Embodiment 1

[0071]Hydrogenation pretreatment reactor A described in embodiment 1, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C residual oil feed all adopt raw material A property to see table 1, the catalysis of 50% of catalytic cracking unit The cracked diesel oil and all the catalytically cracked heavy cycle oil are recycled to the hydrogenation pretreatment reaction zone, and the properties are shown in Table 2. Among them, the catalytic cracking heavy cycle oil is all allocated to hydropretreatment reactor A, the proportion of catalytic cracked diesel oil allocated to hydroprocessing reactor B is 15%, and the proportion of catalytic cracked diesel oil allocated to hydrogenation pretreatment reactor C is 35%. 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, Catalys...

Embodiment 2

[0073] In embodiment 2, in described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C, all adopt residual oil raw material B, the catalytic cracking diesel oil 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 diesel oil distributed to the hydrogenation pretreatment reactor B is 15% 1. The proportion of FCC diesel 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 liquid C in the hyd...

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 diesel oil 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 diesel in hydrogen pretreatment reactor B is 25%, and the proportion of FCC diesel 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 p...

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Abstract

The invention discloses a process for treating inferior oil, the process includes a hydropretreating reaction zone, a hydrotreating reaction zone and a catalytic cracking reaction zone; the process includes the following contents: a residual oil raw material and hydrogen are mixed, and in turn pass through the hydropretreating reaction zone and the hydrotreating reaction zone which are in series connection, after gas-liquid separation of a hydrotreating reaction zone reaction effluent, a gas phase is recycled back to the hydropretreating reaction zone and / or the hydrotreating reaction zone, a liquid phase directly enters the catalytic cracking reaction zone for catalytic cracking reaction, a catalytic cracking reaction effluent is separated to obtain a dry gas, liquefied gas, a catalytic cracking gasoline fraction, a catalytic cracking diesel oil fraction, catalytic cracking heavy cycle oil and catalytic cracking oil slurry, and the catalytic cracking diesel and the catalytic cracking heavy cycle oil are partially or totally recycled back to the hydrotreating reaction zone for hydrotreating reaction. The method can prolong the stable operation period of a device.

Description

technical field [0001] The invention relates to a method for lightening heavy oil, in particular to a method for treating heavy oil by using 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] The m...

Claims

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Application Information

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IPC IPC(8): C10G65/12
Inventor 刘铁斌耿新国翁延博李洪广
Owner CHINA PETROLEUM & CHEM CORP
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