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Catalyst vulcanization method for gasoline hydrotreating process

A gasoline hydrogenation and treatment process technology, applied in the petroleum industry, hydrocarbon oil treatment, etc., can solve the problem of not considering the joint operation of multiple sets of hydrogenation units, and achieve the effect of simple vulcanization start-up operation, good safety and convenient operation

Active Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogenation catalyst sulfidation process in the prior art is only for a certain hydrogenation unit, without considering the combined operation of multiple hydrogenation units

Method used

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  • Catalyst vulcanization method for gasoline hydrotreating process
  • Catalyst vulcanization method for gasoline hydrotreating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] use figure 1 Process flow shown. The high-sulfur diesel hydrogenation unit is in normal operation. The sulfur content of the diesel feedstock is 2.03wt%, and the process conditions are: the reaction hydrogen partial pressure is 6.3MPa, and the volume space velocity is 2.0h -1 , the average reaction temperature is 360°C, and the volume ratio of hydrogen to oil is 350. The reforming pre-hydrogenation unit is ready to start sulfidation after gas replacement, catalyst drying and airtightness of the unit. After the reaction bed temperature of reforming prehydrogenation unit reactor 9 rises to 150° C., sulfurized oil is introduced through pipeline 15 . The effluent obtained from the reactor 9 enters the high fraction 11 of the reforming prehydrogenation unit through the pipeline 10 . After the temperature of the reaction bed in reactor 9 rises to 180° C., the hydrogenation catalyst loaded in the reforming prehydrogenation reactor is sulfided. Part of the high fraction ga...

Embodiment 2

[0047] use figure 1 Process flow shown. The high-sulfur diesel hydrogenation unit is in normal operation. The sulfur content of the diesel raw material is 2.03wt%, and the process conditions are: the reaction hydrogen partial pressure is 6.3MPa, and the volume space velocity is 2.0h -1 , the average reaction temperature is 360°C, and the volume ratio of hydrogen to oil is 350. The coker gasoline hydrogenation unit is ready to start vulcanization after gas replacement, catalyst drying and airtightness of the unit. After the temperature of the reaction bed in the reactor 9 of the coker gasoline hydrogenation unit rises to 160° C., sulfurized oil is introduced through the pipeline 15 . The effluent obtained from the reactor 9 enters the high fraction 11 of the coker gasoline hydrogenation unit through the pipeline 10 . After the temperature of the reaction bed in reactor 9 rises to 180° C., the hydrogenation catalyst loaded in the coker gasoline hydrogenation reactor is sulfu...

Embodiment 3

[0051] use figure 2 process shown. The high-sulfur diesel hydrogenation unit is in normal operation. The sulfur content of the diesel raw material is 2.03wt%, and the process conditions are: the reaction hydrogen partial pressure is 6.3MPa, and the volume space velocity is 2.0h -1 , the average reaction temperature is 360°C, and the volume ratio of hydrogen to oil is 350. The coker gasoline hydrogenation unit is ready to start vulcanization after gas replacement, catalyst drying and airtightness of the unit. After the temperature of the reaction bed in reactor 9 of the coking gasoline hydrogenation unit rises to 180°C, at this time, adjust the circulating hydrogen dehydrogenation unit of the high-sulfur diesel hydrogenation unit. Circulating hydrogen with hydrogen sulfide gas enters coker gasoline hydrogenation reactor 9 through pipeline 8, liquid (including water generated during sulfidation process) is discharged through pipeline 13, high fraction gas passes through desu...

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Abstract

The invention discloses a catalyst sulfurization method of a gasoline hydrogenation technique, which comprises the following steps: (1) normally operating a high-sulfur diesel hydrofining unit; (2) filling an oxidation-state gasoline hydrogenation catalyst in a gasoline hydrotreater reactor; (3) carrying out gas displacement, catalyst drying and airtight operation on the gasoline hydrotreater; (4) introducing part of hydrogen-sulfide-containing gas obtained from the high-sulfur diesel hydrofining unit into the gasoline hydrotreater, carrying out sulfurization on the catalyst in the gasoline hydrotreater reactor; (5) sulfurizing according to normal sulfurization conditions of the gasoline hydrogenation technique; and (6) after the sulfurization is finished, carrying out recycle hydrogen recycling operation on the gasoline hydrotreater, regulating the bed to reaction temperature, and switching to raw oil to carry out gasoline hydrotreating. The method disclosed by the invention can enhance the sulfurization efficiency and reduce the consumption of the sulfurizing agent.

Description

technical field [0001] The invention relates to a catalyst vulcanization method for a gasoline hydrotreating process, in particular to a catalyst vulcanization method for a gasoline hydrotreating process including a high-sulfur diesel hydrotreating device and a gasoline hydrotreating process device in an oil refinery. technical background [0002] Due to the slow growth of crude oil production and increasingly heavy quality, the demand for clean oil products in today's world is increasing, and the product quality requirements are becoming more and more stringent. Petroleum fraction hydrogenation technology is currently the main technology for producing clean oil products, and the preparation technology of hydrogenation catalyst is the key to hydrogenation technology. The active metal component of the prepared hydrogenation catalyst is in an oxidized state, and before the oxidized state catalyst is used in industry, its active metal needs to be converted into a sulfurized sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/02
Inventor 陈琳陈光石友良曾榕辉杜艳泽吴子明高玉兰
Owner CHINA PETROLEUM & CHEM CORP
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