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Hydrotreating combined process for inferior heavy oil and residual oil

A low-quality heavy oil and processing technology, which is applied in the field of hydrogenation, can solve the problems of short operation period, etc., and achieve the effect of slowing down the pressure drop, slowing down the rising speed, and extending the operation period of the device

Active Publication Date: 2014-01-29
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the operation period of this method is short, generally no more than 1 year

Method used

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  • Hydrotreating combined process for inferior heavy oil and residual oil
  • Hydrotreating combined process for inferior heavy oil and residual oil
  • Hydrotreating combined process for inferior heavy oil and residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 (the concentration % is mass %)

[0036] The properties of feedstock oil A and feedstock B used in the test are listed in Table 1. This example is an implementation scheme for the hydroprocessing of inferior raw materials, and the schematic diagram of the operation flow is referred to figure 1 .

[0037] Table 1 Main properties of test raw oil

[0038] raw material name

[0039] The process is as follows: the raw material oil A is mixed with the slurry bed hydrogenation catalyst and then enters the slurry bed pretreatment reactor with hydrogen for pretreatment. After the distillate oil is separated from the pretreatment product, the remaining part enters the hydrogenation treatment unit in two ways. The bottoms of the upflow reactors R-1A and R-1B are in contact with the catalysts of the upflow reactors to carry out iron and decalcification reactions, and the reaction products directly enter the bottom of the upflow reactors R-2 without separat...

Embodiment 2

[0042] Embodiment 2 (the concentration % is mass %)

[0043] In this embodiment, the raw material oil used in Example 1 is replaced with the raw material B shown in Table 1, and the slurry bed catalyst is non-supported Ni 2 The amount of P added was 500 μg / g, and the specific process was the same as in Example 1, but the conditions were changed as shown in Table 3 and Table 4.

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Abstract

The invention relates to a hydrotreating combined process for inferior heavy oil and residual oil. The hydrotreating combined process comprises the following steps of: firstly pretreating the heavy oil and / or residual oil raw material in a slurry reactor; carrying out gas-liquid separation, and hydro-upgrading the liquid-phase product in a fixed bed, wherein the hydro-pretreating part of the slurry reactor comprises a straight cylinder type slurry reactor pretreatment reactor and a slurry reactor hydro-catalyst, and the reactors used in the fixed bed hydro-upgrading part sequentially and mainly include two parallel up-flow type deferrization-decalcification reactors, one up-flow type demetalization reactor, one fixed bed desulfurization reactor and one fixed bed denitrification reactor. By adopting the hydrotreating combined process provided by the invention, not only are the hydrotreating and impurity removal capacities of the catalyst improved, but also the running cycle of the device is prolonged. The hydrotreating combined process provided by the invention can be applied to treating the inferior heavy oil and residual oil, which are high in sulfur content, metal content, and asphalt content; the conversion ratio is 30-80%; the raising rate of the pressure drop of the reactors can be effectively reduced so as to achieve the long-period running of the device.

Description

technical field [0001] The method of the present invention can be used in the field of hydrogenation, especially for high metal (Ni+V≥150 g·g -1 ), high carbon residue (CCR ≥ 16wt%) heavy distillate oil, residual oil and oil sand bitumen hydrofining and hydrotreating. The method of the invention not only has higher demetallization, desulfurization, denitrogenation and deasphaltene activities, but also has a longer device operation period. Background technique [0002] At present, the demand for light and heavy oil products in the domestic and foreign oil product markets will continue to rise, while the demand for heavy oil products such as fuel oil will show a downward trend. In addition, due to the increasing pressure of environmental protection, countries have generally raised the quality standard requirements of petroleum products, especially gasoline and diesel products for vehicles. Under the above-mentioned market trend, the refining technology that can not only real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 张志国赵愉生赵元生范建光周志远刘元东崔瑞利喻昊梁迎春陈芬芬谭青峰胡长禄
Owner PETROCHINA CO LTD
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