Petroleum hydrocarbon treating process

Abstract

The process of producing clean fuel with petroleum hydrocarbons has well combined hydrocracking process, hydrodesulfurizing process, catalytically cracking process and coking process. It has most of decompressed wax oil from crude oil desulfurized and catalytically cracked, the coked wax oil obtained through coking catalytically cracked tail oil and vacuum residual oil hydrocracked, and the hydrocracked tail oil catalytically cracked for the second time. The combined process can obtain petroleum coke product, high quality hydrocracked light oil product and catalytically cracked light oil product simultaneously. Facilitate the operation of hydrocracking apparatus, increase the service life of the catalyst and obtain clean fuel in high economic benefit.

Description

technical field [0001] The invention relates to a processing method for producing clean fuel from petroleum hydrocarbons, in particular to a new process combining coking technology, hydrodesulfurization technology, hydrocracking technology and catalytic cracking technology. Background technique [0002] With the worldwide economic development and increasingly stringent environmental regulations, there are stricter requirements on the demand and quality of petroleum products. At the same time, crude oil worldwide is getting heavier and worse, which brings more difficulties to processing. [0003] The existing crude oil processing process is generally as follows: the light oil product from the atmospheric and vacuum unit is directly mixed with the light oil product obtained from other devices (or after being refined) and directly leaves the factory, and the vacuum wax oil enters the hydrocracking unit to obtain high-quality Light oil products and high-quality tail oils, as de...

AI Technical Summary

Problems solved by technology

The main problem of this process is that the quality of gasoline products obtained by catalytic cracking of atmospheric residual oil is poor, which cannot meet the increasingly stringent environmental protection requirements. At the same time, as the demand for middle distillate oil increases significantly, this process needs to be further improved

Moreover, the process does not comprehensively determine the adjustment of its raw material properties according to the characteristics of different devices, and does not give full play to the advantages of different devices

In addition, due to the increase in the processing capacity of the refinery and the increase in the amount of heavy crude oil, the output of heavy and residual oil has also increased accordingly, which has greatly affected the development of catalytic cracking, an important means of lightening heavy oil. However, it is necessary to use other methods to improve the product quality of the catalytic cracking unit and reduce its operating severity

Images