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Hydrotreating Catalyst External Presulfurization Method

An off-vessel pre-sulfurization and hydro-refining technology, which is used in fatty acid hydrogenation, fatty acid chemical modification, fatty acid production, etc. The effect of carbon deposition

Active Publication Date: 2012-02-22
一重集团大连工程建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The external reservation catalyst prepared by this method is unstable and needs to be protected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. Take 5Kg of cottonseed oil and heat it to 160°C, then slowly add 1Kg of powdery sulfur, the ratio of cottonseed oil to powdery sulfur is 5:1, react for 1 hour after adding, and generate red black sulfurized oil;

[0020] b. Take 1Kg of reddish-black sulfide oil and add 10Kg of hydrofining catalyst, mix evenly, put it into the reactor, heat at 0.2MPa pressure and 250°C for 1 hour, cool to room temperature, and complete the external pretreatment of hydrofining catalyst. vulcanization.

Embodiment 2

[0022] a. Take 4Kg of rapeseed oil and heat it to 170°C, then slowly add 1Kg of powdery sulfur, the ratio of rapeseed oil to powdery sulfur is 4:1, react for 1 hour after adding, and generate red black sulfurized oil;

[0023] b. Take 5Kg of reddish black sulfide oil and add 50Kg of hydrofining catalyst, mix evenly, put it into the reactor, heat at 0.2MPa pressure and 260°C for 1 hour, cool to room temperature, and complete the external pretreatment of hydrofining catalyst. vulcanization.

Embodiment 3

[0025] a. Take 1Kg of peanut oil and heat it to 180°C, then slowly add 0.2Kg of powdery sulfur, the ratio of peanut oil to powdery sulfur is 5:1, react for 1 hour after the addition, and generate red black vulcanized oil;

[0026] b. Take 1Kg of reddish-black sulfide oil and add 10Kg of hydrofining catalyst, mix evenly, put it into the reaction kettle, heat at 0.2MPa pressure and 280°C for 1 hour, cool to room temperature, and complete the external pretreatment of hydrofining catalyst. vulcanization.

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PUM

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Abstract

The invention relates to a presulfurization method outside a hydrorefining catalyst. The method is to heat the vegetable oil to a certain temperature and then slowly add powdered sulfur in a certain proportion to generate red-black vulcanized oil; add a hydrofining catalyst to the red-black vulcanized oil in a certain proportion, mix it evenly, and put it into a reaction kettle. Heating and activating at a certain pressure and temperature, and cooling to room temperature completes the external pre-sulfurization of the hydrotreating catalyst. The invention breaks through the traditional method of catalyst vulcanization, and the vulcanization is even, reduces the amount of carbon deposits on the catalyst, increases the sulfur rate, significantly improves the activity and stability of the catalyst, can exist stably in the air, and is convenient for transportation and transportation. Storage greatly reduces the cost of industrial hydrogenation. It is simple to operate and easy to implement. Compared with traditional vulcanization methods, it can significantly reduce the cost of vulcanization.

Description

Technical field: [0001] The invention relates to the industrial technology of petrochemical oil refining, especially the sulfidation pretreatment process of hydrogenation catalyst in the catalytic hydrogenation technology. Background technique: [0002] With the rapid development and technological progress of the oil refining industry, catalytic hydrogenation technology has been widely used in petroleum and petrochemical enterprises. In order to overcome the disadvantages of insufficient sulfidation of pre-sulfurization inside the hydrogenation catalyst and long catalyst start-up time, the pre-sulfurization technology outside the hydrogenation catalyst was developed. This technology can effectively sulfide the hydrogenation catalyst. Compared with the pre-sulfurization inside the device, its technical advantages are as follows: First, the pre-sulfurization technology outside the device can improve the utilization rate of the active metal component of the hydrogenation cataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/00C11C3/12
Inventor 陆久民阎富山王绍武张传生赵伟
Owner 一重集团大连工程建设有限公司
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