Using method of aromatic hydrocarbon enriched wax oil in heavy oil up-flowing type hydrogenation thermal cracking reaction process

A technology of cracking reaction and hydrogenation reaction, which is applied in the direction of only multi-stage series refining and cracking process, treatment of hydrocarbon oil, petroleum industry, etc., and can solve the problems of lower overall economy, long hydrogenation process, and no reports. , to achieve the effect of saving system scale, reducing hydrogen consumption and improving economy

Inactive Publication Date: 2019-10-25
洛阳瑞华新能源技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] ③ The quality index of the heavy wax oil HHVGO obtained through unit 21 usually does not meet the commodity requirements, and its post-processing needs to go through the corresponding hydrogena

Method used

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  • Using method of aromatic hydrocarbon enriched wax oil in heavy oil up-flowing type hydrogenation thermal cracking reaction process
  • Using method of aromatic hydrocarbon enriched wax oil in heavy oil up-flowing type hydrogenation thermal cracking reaction process

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0759] Example one

[0760] Based on the comparative example, in order to increase the overall conversion rate of the hydrothermal cracking feedstock oil vacuum residue, the use of the aromatic-rich wax oil of the present invention in the heavy oil upflow hydrothermal cracking reaction process is used, and the steps are as follows:

[0761] The wax oil catalytically cracked heavy cycle oil (catalytically cracked wax oil) is used as aromatic-rich wax oil (aromatic-rich intermediate wax oil) and added to the second reactor of the suspended bed hydrothermal cracking reaction R10 of vacuum residue R10F Without passing through the first reactor R10A, the ratio of the weight of aromatic-rich medium wax oil to the weight of vacuum residue R10F is 20%;

[0762] Under the condition that the yield of benzene insolubles in the oil produced by the hydrothermal cracking reaction of vacuum residue R10F does not increase (not more than 2.2 to the mass% of the feed oil), the single-pass conversion r...

Example Embodiment

[0763] Example two

[0764] Based on Example 1, in order to improve the overall hydrothermal cracking conversion rate of vacuum residue R10F, the present invention is used to perform cyclic hydrothermal cracking of the hydrothermal cracked product heavy wax oil and residual oil.

[0765] In the hydrothermal cracking product fractionation step, vacuum fractionation deep draws the hydrothermal cracking medium wax oil THC-KVGO, and the suspended bed hydrothermal cracking product residue oil (>475℃) is separated into three fractions:

[0766] The first fraction is the medium wax oil THC-MVGO (mainly composed of hydrocarbons with a conventional boiling point of 400-520°C) as the R10 product of the heavy oil hydrothermal cracking reaction process;

[0767] The second fraction is THC-HVGO, a heavy oil of the hydrothermal cracking product, which is mainly composed of hydrocarbons with a conventional boiling point of 510 to 550°C, which is the feed and washing section of the R10 product vacuum ...

Example Embodiment

[0777] Example three

[0778] Based on the second embodiment, the recycling method of light hydrogen supply solvent is adopted to ease the operating conditions of the front reaction section R10A of the vacuum residue hydrothermal cracking reaction process R10 (mainly reducing the operating temperature), and further improve the hydrothermal cracking The overall thermal cracking conversion rate of the raw oil vacuum residue R10F reduces the number of external residues.

[0779] In order to alleviate the operating conditions of R10A in the front reaction section of the vacuum residue hydrothermal cracking reaction process R10 (mainly to reduce the operating temperature), and to further increase the overall thermal cracking conversion rate of the hydrothermal cracking feedstock oil vacuum residue R10F , Under the premise of fully improving the hydrogen supply efficiency of the external light hydrogen supply solvent DS and the hydrogen transfer efficiency in the reactor of the front hyd...

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Abstract

The invention provides a using method of aromatic hydrocarbon enriched wax oil in a heavy oil up-flowing type hydrogenation thermal cracking reaction process. Different from the current using method that aromatic hydrocarbon enriched wax oil KVGO such as aromatic hydrocarbon enriched or hydrogen-donating hydrocarbon enriched medium wax oil subjected to a complete heavy oil R10F up-flowing type hydrogenation thermal cracking reaction process R10, that is, the aromatic hydrocarbon enriched wax oil KVGO is introduced into a front reaction segment R10A, the KVGO is introduced into a rear reactionsegment R10B of R10 and does not pass through R10A, the single-pass thermal cracking rate of the KVGO can be significantly decreased, under the target of ensuring the same number of KVGO conversion product wax oil in a R10 terminal product R10P, the number of the KVGO can be significantly decreased, the KVGO can serve as a coolant for a R10B thermal raw material from a R10A product, and thus the using quantity of the special coolant is decreased; the scale of the R10A, the R10B and a product separation system can be significantly lowered, that is, investment can be significantly saved; and theKVGO can be separated product medium wax oil, coking wax oil, catalytic cracking heavy recycling oil and clarified oil of R10P, or heavy wax oil of petroleum thick oil.

Description

technical field [0001] The present invention relates to the use of aromatic-rich wax oil in the upflow hydrothermal cracking reaction process of heavy oil. Compared with the existing usage, aromatic-rich wax oil KVGO such as rich aromatics or hydrogen-rich hydrocarbon medium wax oil is passed through all heavy oil R10F upflow hydrogenation The thermal cracking reaction process R10 is different from the introduction of the front reaction section R10A. KVGO is introduced into the rear reaction section R10B of R10 without passing through R10A, which can significantly reduce the single-pass thermal cracking rate of KVGO. The number of KVGO can be significantly reduced under the same number of goals, and KVGO can also be used as a coolant for R10B hot raw materials from R10A products to reduce the amount of special coolant; it can significantly reduce the scale of R10A, R10B, and product separation systems, which can significantly save investment; KVGO can be used for The separatio...

Claims

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Application Information

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IPC IPC(8): C10G55/06
CPCC10G55/06C10G2300/70
Inventor 何巨堂
Owner 洛阳瑞华新能源技术发展有限公司
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