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

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...

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 hydrogenation and upgrading process, which leads to a longer overall hydrogenation process and overall hydrogen consumption. Larger, lower overall economy;

[0049] Method of the present invention has no report

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