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Ex-situ presulfiding method of hyrorefining catalysts

An external presulfurization and hydrogenation refining technology, which is applied in the fields of fatty acid hydrogenation, fatty acid chemical modification, fatty acid production, etc., can solve problems such as instability of externally reserved catalysts, achieve easy implementation, uniform vulcanization, and reduce carbon deposition volume effect

Active Publication Date: 2010-03-10
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 an ex-situ presulfiding method of hyrorefining catalysts. The method comprises the following steps: heating plant oil to reach a certain temperature, then slowly adding powdery sulphur according to a certain proportion to generate deep black sulphurized oil; adding the hyrorefining catalysts in the deep black sulphurized oil according to a certain proportion, uniformly mixing and then putting in a reaction kettle, heating and activating under a certain pressure and temperature, cooling to the room temperature to finish the ex-situ presulfuration of hydrogenation refined catalysts. The invention breaks through the traditional sulfuration method of catalysts, has uniform sulfuration, reduces the coke formation, improves the sulfurization degree, enables the activation and the stability of the catalysts to be obviously improved, is stably stored in the air, convenient to transport and store, simple to operate and easy to implement, greatly lowers the industrial hydrogenation cost and can obviously lower the sulfuration cost compared with the traditional sulfuration method.

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 Applications(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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