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Catalyst vulcanization method for diesel hydrotreating process

A hydrogenation treatment and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as joint operation of multiple hydrogenation units, and achieve considerable economic benefits and social Benefits, good vulcanization effect, environment-friendly effect

Active Publication Date: 2017-08-22
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 diesel hydrotreating process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The high-sulfur diesel hydrotreating unit is in normal operation. Put catalysts A and B into the reactor of diesel oil upgrading (MCI) device 4, after gas replacement, catalyst drying and device airtightness, the hydrogen partial pressure is adjusted to 6.0MPa, ready to start vulcanization. Raise the temperature of the catalyst bed in reactor 4 of the diesel oil upgrading (MCI) unit to 150°C. After the bed temperature stabilizes, adjust the circulation hydrogen dehydrogenation unit 3 of the high-sulfur diesel hydrotreating unit, and introduce the circulation hydrogen containing hydrogen sulfide Diesel oil upgrading (MCI) device 4, for vulcanization, and then through the diesel oil upgrading (MCI) device reaction product gas-liquid separator 5, the gas enters the diesel oil upgrading (MCI) device circulating hydrogen dehydrogen sulfide device 6, for dehydrogen sulfide After treatment, return to the high-sulfur diesel hydrotreating unit 1. Establish a circulating hydroge...

Embodiment 2

[0058] The high-sulfur diesel hydrotreating unit is in normal operation. Put the catalysts A and B into the reactor of the diesel oil upgrading (MCI) device 4. After gas replacement, catalyst drying and device airtightness, the hydrogen partial pressure is adjusted to 6.0 MPa, ready to start vulcanization. Raise the temperature of the catalyst bed in reactor 4 of the diesel oil upgrading (MCI) unit to 130°C. After the bed temperature stabilizes, adjust the circulating hydrogen of the high-sulfur diesel hydrotreating unit to dehydrogen sulfide unit 3, and the circulating hydrogen containing hydrogen sulfide Introduce the diesel oil upgrading (MCI) device 4 for vulcanization, and then pass through the diesel oil upgrading (MCI) device reaction product gas-liquid separator 5, and the gas enters the diesel oil upgrading (MCI) device circulating hydrogen dehydrogen sulfide device 6 for desulfurization After hydrogen treatment, return to the high-sulfur diesel hydrotreating unit 1. ...

Embodiment 3

[0060] The high-sulfur diesel hydrotreating unit is in normal operation. Put catalysts A and B into reactor 4 of the diesel oil upgrading (MCI) device. After gas replacement, catalyst drying and device airtightness, the hydrogen partial pressure is adjusted to 6.0 MPa, ready to start vulcanization. Raise the temperature of the catalyst bed in reactor 4 of the diesel oil upgrading (MCI) unit to 160°C. After the bed temperature stabilizes, adjust the circulating hydrogen dehydrogen sulfide unit 3 of the high-sulfur diesel hydrotreating unit, and introduce the circulating hydrogen containing hydrogen sulfide into the Diesel oil upgrading (MCI) device 4, for vulcanization, and then through the diesel oil upgrading (MCI) device reaction product gas-liquid separator 5, enters the diesel oil upgrading (MCI) device circulating hydrogen dehydrogen sulfide device 6, for dehydrogen sulfide treatment Afterwards, return to the high-sulfur diesel oil hydrotreating unit 1. Establish a circu...

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Abstract

The invention discloses a catalyst vulcanization method for a diesel hydrotreating process, comprising: (1) treating high-sulfur diesel while the hydrogenation device is in normal operation; (2) filling the reactor of the diesel hydrotreating device with an oxidized diesel hydrogenation catalyst ; (3) Adjust the desulfurization rate of the circulating hydrogen dehydrogenation unit in the high-sulfur diesel hydrogenation unit; (4) Introduce the hydrogen sulfide-containing gas discharged from the circulating hydrogen dehydrogenation unit in the high-sulfur diesel hydrogenation unit Hydrogen treatment unit, to sulfide the catalyst of the diesel hydrotreatment unit; (5) Vulcanize according to the normal sulfuration conditions of the diesel hydrotreatment unit until the end; (6) After the sulfidation is completed, the diesel hydrotreatment unit performs self-circulation hydrogen circulation Operation, adjust the reaction temperature, switch feedstock oil for diesel hydrotreating reaction. The method of the invention can improve vulcanization efficiency and reduce vulcanization agent consumption.

Description

technical field [0001] The invention relates to a catalyst vulcanization method for a diesel hydrotreating process, in particular to a catalyst vulcanization method for a diesel hydrotreating process that is equipped with a high-sulfur diesel hydrogenation process device and a diesel hydrotreating process device at the same time in an oil refinery. [0002] technical background [0003] The strict environmental protection requirements in today's world have led to an increasing demand for clean oil products, 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20B01J23/888C10G49/04
Inventor 陈光曾榕辉石友良高玉兰杜艳泽吴子明
Owner CHINA PETROLEUM & CHEM CORP
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