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

A hydrogenation catalyst and reactor system technology, applied in refining to remove heteroatoms, etc., can solve the problems of frequent catalyst replacement, difficult decomposition, high cost of vulcanizing agent, etc.

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

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Problems solved by technology

Since the self-contained sulfide in the vulcanized oil is difficult to decompose at a lower temperature, low-temperature vulcanization is not easy to carry out, and the active metal is easily reduced, and the activity of the catalyst i

Method used

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

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Embodiment

[0012] According to the flow chart in Annex 1, build a set of test equipment in the laboratory, R1A, R1B are each filled with 100ml of protective catalyst and 100ml of demetallization catalyst, R2, R3, and R4 are respectively filled with 200ml of desulfurization catalyst, high-activity desulfurization catalyst, and denitrification catalyst. Catalyst properties are listed in Table 1. The operating conditions of the device are pressure 18MPa, liquid space velocity 0.20h -1 , hydrogen oil ratio (v / v) 800. The raw material oil is light sand and reduced slag, and its properties 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 residual oil switchable reactor.

[0013] Table 1 Catalyst properties

[0014]

[0015] Table 2 Properties of feedstock oil and indicators of hydrogenation normal residue (>365°C)

[0016] nature

Vacuum r...

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Abstract

The invention relates to an online prevulcanization method by a dry method of 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 by a high pressure separator gas of a residue hydrotreating device, and 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; and selectively adding P, Si and F assistants, wherein the catalyst takes aluminum oxide as a carrier and oxides of W, Mo, Co or Ni and the like as a negative carrier. According to the method, the online updated catalyst of the residue hydrotreating switchable reactor system is prevulcanized by means of the high pressure separator gas of the residue hydrotreating device rich in H2S; the method has the advantages of short vulcanizing time, low vulcanizing expense and simplicity in operation.

Description

technical field [0001] The invention relates to the application of a hydrogenation catalyst dry 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 a high operating rate of industrial units, even when processing heavy residues rich in metals and asphaltenes, the French Institute of Petroleum (IFP) proposed an interchangeable protection reaction The reactor system (PRS), that is to set up two protection reactors, through the high-pressure switching valve, the two protection reactors can be switched to each other or the...

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Application Information

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IPC IPC(8): C10G45/08
Inventor 崔瑞利赵愉生范建光程涛周志远于双林刘元东张春光张志国那美琦谭青峰赵元生
Owner PETROCHINA CO LTD
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