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.

Inactive Publication Date: 2014-05-21
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For switchable reactors, frequent on-line agent change, vulcanization

Method used

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

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Experimental program
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Embodiment

[0017] according to figure 1 In the flow chart in the middle, a set of test equipment is built in the laboratory. R1A and R1B are each filled with 100ml of protective catalyst and 100ml of demetallization catalyst, and R2, R3, and R4 are respectively filled with 200ml of desulfurization catalyst, high-activity desulfurization catalyst and denitrification catalyst. Table 1. The operating conditions of the device are pressure 18MPa, liquid space velocity 0.20h -1 , hydrogen oil ratio (v / v) 800. The purity of the new hydrogen is 99v%, and the raw material oil is sand light and slag-reduced. The properties of raw materials and product control indicators are shown in Table 2. The high-pressure separator gas comes from another set of hot high-pressure separator of the diesel plant in operation, and is washed with water before entering the switchable reactor for sulfidation.

[0018] Table 1 Catalyst properties

[0019]

[0020] Table 2 Properties of feedstock oil and indicat...

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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.

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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Application Information

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IPC IPC(8): C10G45/00C10G47/00C10G49/00
Inventor 崔瑞利赵愉生范建光周志远于双林刘元东张春光张志国那美琦谭青峰赵元生程涛
Owner PETROCHINA CO LTD
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