Application of hydrogenation catalyst prevulcanization method in residue hydrotreating switchable reactor system

A technology of hydrogenation catalyst and reactor system, which is used in hydrocarbon oil cracking, petroleum industry, processing hydrocarbon oil, etc.
CN103805232AInactive Publication Date: 2014-05-21PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2014-05-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to an application of a hydrogenation catalyst prevulcanization method in a residue hydrotreating switchable reactor system. The application comprises the following steps: carrying out a residue hydrotreating reaction by a switchable up-flow reactor or a fixed bed reactor, prevulcanizing an online cut-in fresh catalyst, and vulcanizing the catalyst by means of H2S in a high pressure separator gas of hydrogenation equipment and sulfide in distillate with boiling range of 180-550 DEG C; adjusting concentration of hydrogen sulfide in the vulcanized gas by changing the proportion of the high pressure separator gas to the fresh hydrogen, wherein the volume ratio of the fresh hydrogen to the high pressure separator gas is 1:100-100:1, the time is 2-85 hours, the temperature is 100-450 DEG C, the volume ratio of hydrogen to oil is 50-2000, the hydrogen partial pressure is 0.1-24MPa and the liquid hourly space velocity is 0.1-5.0 / h<-1>; and loading oxides of W, Mo, Co and Ni or adding P, Si and F assistants, wherein the catalyst takes aluminum oxide as a carrier. The method is low in cost, high in efficiency and simple to operate.
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Description

technical field

[0001] The invention relates to the application of a hydrogenation catalyst presulfurization method in a switchable reactor system for residual oil hydrogenation. Background technique

[0002] At present, the fixed-bed residual oil hydrotreating technology has developed into a mature low-quality residual oil processing technology. However, as crude oil becomes heavier and the content of impurities such as metals is higher and higher, due to the limitations of the fixed bed itself, its operation cycle will be greatly shortened and the operating rate will become lower. In order to ensure high operating rates of industrial units, even when processing heavy residues rich in metals and asphaltenes, the French Institute of Petroleum (IFP) proposes a switchable reactor system (PRS), that is to set up two protection reactors, through the high-pressure switching valve, the two protection reactors can be switched or the operation mode can be changed. When the catalys...

Claims

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