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Method of prolonging service life of heavy oil and residual oil hydrogenating catalyst

A technology for residual oil hydrogenation and catalyst, which is applied in the direction of physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc. It can solve the problems of unstable phase state of liquid phase flow, less overlap of fractions, and aggravated coke, etc., to achieve Strong raw material adaptability, extended operation cycle, and extended service life

Inactive Publication Date: 2006-09-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned stream has the following disadvantages as circulating oil: Generally speaking, because the gas oil has less overlap with the low-quality residual oil fraction to be processed, the addition of the gas oil will easily lead to the instability of the phase state of the liquid phase stream, and the hydrotreating can aggravate coke formation and increase hydrogen consumption

Method used

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  • Method of prolonging service life of heavy oil and residual oil hydrogenating catalyst

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Embodiment 1

[0029] On a set of residual oil hydrotreating test device A with three reactors in series, the residual oil hydrotreating test was carried out using a full range of residue hydrotreating catalysts developed by Fushun Petrochemical Research Institute. The loading conditions of each anticatalyst are as follows: the first anti ZTS01 and ZTS02 are loaded from top to bottom, the filling ratio (V) is: 7.5:1, and the three reactors are filled with ZTN01 from top to bottom, and the filling ratio (V) of the three reactors is 45:20:35. The above-mentioned CEN-2, CEN4, FZC-16, CEN-5, and CEN6 catalysts are produced by the pilot base of Fushun Petrochemical Research Institute, and ZTS01, ZTS02, and ZTN01 are produced by the No. 1 Fertilizer Factory of Qilu Petrochemical Company. The main physicochemical properties of the catalysts are listed in Table 1.

[0030] The operating conditions of the residual oil hydrogenation unit are: reaction pressure 15.7MPa, reaction temperature 385°C, hyd...

Embodiment 2

[0043] On a set of residual oil hydrogenation test device B with two reactors in series, the residual oil hydrotreating test was carried out using a full range of residual oil hydrotreating catalysts developed by Fushun Petrochemical Research Institute. The loading conditions of each anti-catalyst are: the first anti-catalyst is filled with CEN-2, CEN4, FZC-16, CEN-5, CEN6 from top to bottom, the filling ratio (V) is: 1:1.5:2.2:2.4:13, the second anti- Fill FZC-301 from top to bottom, and the filling ratio (V) of the two reactors is 50:50. The above-mentioned CEN-2, CEN4, FZC-16, CEN-5, and CEN6 catalysts are produced by the pilot base of Fushun Petrochemical Research Institute, and FZC-301 is produced by the No. 1 Fertilizer Factory of Qilu Petrochemical Company.

[0044] The operating conditions of the residual oil hydrogenation unit are: reaction pressure 14.0MPa, reaction temperature 384°C, hydrogen-oil ratio 650 (v / v), liquid hourly volume space velocity 0.235h -1 (for r...

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Abstract

The method of prolonging service life of heavy oil and residual oil hydrogenating catalyst includes hydrogenating to eliminate metal, eliminating asphalt with solvent, hydrogenating to eliminate sulfur and hydrogenating to eliminate nitrogen. The liquid phase effluent after hydrogenating to eliminate metal is asphalt eliminated to obtain asphalt-eliminating oil and oil-eliminating asphalt; the asphalt-eliminating oil together with the rest liquid phase effluent after hydrogenating to eliminate metal is made to enter the area of hydrogenating to eliminate sulfur and hydrogenating to eliminate nitrogen; and the oil-eliminating asphalt is coked to obtain coked wax oil with at least part returned to the area of hydrogenating to eliminate metal. Compared with available technology, the present invention has raised flexibility and prolongs the service life of the hydrogenating catalyst.

Description

technical field [0001] The invention belongs to a method for hydrogenation treatment of heavy and residue oil, in particular to a method for prolonging the service life of a catalyst for hydrogenation treatment of fixed bed residue oil. Background technique [0002] As we all know, in recent years, the world's crude oil has gradually become heavier and worse, coupled with the increasingly stringent requirements of environmental protection regulations on oil products, the reasonable treatment of inferior oil products, especially heavy and residual oil, is becoming more and more important. However, due to poor quality, heavy residue, high density, high viscosity, and a large amount of non-ideal components such as metals, sulfur, and nitrogen, the difficulty of hydrotreating is far greater than that of distillate oil. At present, there are mainly fixed bed, suspended bed, ebullating bed, moving bed, etc. for hydrotreating low-quality heavy and residual oil, among which fixed be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00C10G45/00
Inventor 韩照明胡长禄蒋立敬耿新国彭派卢宏杰
Owner CHINA PETROLEUM & CHEM CORP
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