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Processing method of vessel-outside pre-sulphuring hydrogenation catalyst

A hydrogenation catalyst and external presulfurization technology, which is applied in the direction of physical/chemical process catalysts, catalyst protection, chemical instruments and methods, etc., can solve the problems of catalyst safety, hidden dangers, and high cost of protective agents, so as to protect catalysts and prevent Self-igniting, easy-to-implement effects

Active Publication Date: 2007-10-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the further improvement of people's understanding, it is found that this technology has the following insurmountable defects: (1) the starting site needs to be equipped with corresponding vulcanization equipment, and the vulcanizing agent used pollutes the factory area; (2) the vulcanization time is longer ( It generally takes 3-10 days); (3) It is difficult to characterize the performance of the catalyst after sulfidation, etc.
But the above-mentioned technology still has the following deficiencies: (1) the protective agent or sealant used is organic matter. When starting work, these organic matter are melted and come out, which will cause the catalyst bed to decrease, and certain bed layers will be idle, affecting the performance of the device. Utilization rate; (2) There are potential safety hazards in the filling process of the catalyst containing organic matter; (3) The cost of the protective agent used is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example is a hydrorefining catalyst after complete sulfidation outside the processor using the method of the present invention.

[0028]The catalyst used in Comparative Example 1 was subjected to the sulfurization process under the same conditions as Comparative Example 1. When the temperature drops to 60°C, ethanol is injected into the catalyst bed, and the sulfur content in the ethanol at the outlet of the bed is continuously analyzed. If the sulfur content is lower than 10ppm, stop feeding ethanol, use high-purity nitrogen (99.999v%) to purge the device and raise the bed temperature to 120°C. After constant temperature for 1 hour, the temperature of the device was lowered to room temperature, and deionized deoxygenated water was injected into the catalyst bed. Subsequently, the catalyst was unloaded and placed in a ground-mouth flask filled with deionized deoxygenated water, so that the water was completely submerged in the catalyst and stored for later use. A...

Embodiment 2

[0036] This example is a hydrocracking catalyst that has been fully sulfided outside the processor using the method of the present invention.

[0037] The catalyst used in Comparative Example 2 was subjected to the sulfurization process under the same conditions as Comparative Example 1. When the temperature drops to 130°C, inject gasoline with an end boiling point of 155°C into the catalyst bed, and continuously analyze the sulfur content in the gasoline at the outlet of the bed. If the sulfur content is lower than 10ppm, stop feeding gasoline, use high-purity nitrogen (99.999v%) to purge the device and raise the bed temperature to 170°C. After keeping the temperature constant for 1 hour, the temperature of the device was lowered to room temperature, and deoxygenated deionized water was injected into the catalyst bed. Subsequently, the catalyst was unloaded and placed in a ground-mouth flask filled with deoxygenated deionized water, so that the water was completely submerged...

Embodiment 3

[0046] This example is a hydrorefining catalyst after complete sulfidation outside the processor using the method of the present invention.

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Abstract

The invention discloses a method for treating sulfidized hydrogenation catalyst outside container, which adds the sulfidized hydrogenation catalyst into the container with deoxidized water while the water can completely cover the catalyst to be sealed and stored. The invention can avoid the contact between catalyst and air to effectively protect catalyst and avoid the self-combustion of it. And the invention has easy operation and simple application. Since the protective agent in said invention is water with lower cost, it will not pollute environment and people in the transportation and filling process.

Description

1. Technical field [0001] The invention relates to a method for treating presulfided catalyst outside a device, in particular to a method for sulfurizing a hydrogenation catalyst outside a protector. 2. Background technology [0002] As we all know, hydrogenation catalysts that use Group VIB and Group VIII metals (especially molybdenum, tungsten, cobalt, nickel) as active metals can play their role to the maximum after sulfuration treatment before use. The relationship between sulfuration effect and catalytic performance Therefore, hydrogenation catalyst vulcanization technology has been widely valued by developers and manufacturers. [0003] After years of development, in-vessel vulcanization has become quite mature and plays a huge role in the hydrogenation process. However, with the further improvement of people's understanding, it is found that this technology has the following insurmountable defects: (1) the starting site needs to be equipped with corresponding vulcani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/20B01J27/04B01J33/00
Inventor 张喜文凌凤香孙万富赵长志
Owner CHINA PETROLEUM & CHEM CORP
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