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Industrial roasting reduction method of cobalt-based slurry bed Fischer-Tropsch synthesis catalyst supported on activated carbon

A Fischer-Tropsch synthesis and catalyst technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems not involved in the preparation process, etc.

Pending Publication Date: 2019-03-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are some utility model patents, such as patent CN201320367638.X, which proposes a fluidized bed equipment for powder catalyst activation, but does not involve the entire preparation process

Method used

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  • Industrial roasting reduction method of cobalt-based slurry bed Fischer-Tropsch synthesis catalyst supported on activated carbon
  • Industrial roasting reduction method of cobalt-based slurry bed Fischer-Tropsch synthesis catalyst supported on activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the attached figure 1 The process proceeds. 10 tons of semi-dry base catalyst (the dry weight composition is equivalent to 6.4 tons of finished catalyst), containing 10% water, is added in the semi-dry base catalyst feed bin 1. Use high-pressure nitrogen to transport the semi-dry catalyst into the catalyst roasting processor 2, program temperature rise at 20-400°C, pressure 70kPa, nitrogen volume space velocity 1000h -1 After roasting for 100 h under the condition of superficial gas velocity of 0.1 m / s, it is discharged into the post-calcination catalyst silo 3 . The calcined catalyst is transported into the catalyst reduction processor 4 with high-pressure nitrogen, the temperature is programmed at 20-470°C, the pressure is 90kPa, and the hydrogen volume space velocity is 1000h -1 , after reduction for 100 h under the condition of superficial gas velocity of 0.1 m / s, it was unloaded into finished catalyst silo 5 and weighed to obtain 6 tons of finished c...

Embodiment 2

[0020] According to the attached figure 1 The process proceeds. 10 tons of semi-dry base catalyst (the dry weight composition is equivalent to 6.4 tons of finished catalyst), containing 10% water, is added in the semi-dry base catalyst feed bin 1. Use high-pressure nitrogen to transport the semi-dry catalyst into the catalyst roasting processor 2, program temperature rise at 20-400°C, pressure 70kPa, nitrogen volume space velocity 1000h -1 After roasting for 300h under the condition of superficial gas velocity of 0.1m / s, the high-pressure nitrogen gas is directly transported into the catalyst reduction processor 4, the temperature is programmed at 20-470°C, the pressure is 90kPa, and the hydrogen volume space velocity is 1000h -1 , after reducing for 300h under the condition of superficial gas velocity 0.1m / s, it was unloaded into finished catalyst silo 5 and weighed to obtain 5 tons of finished catalyst. The silo 5 needs to be fed with nitrogen continuously to keep the oxyg...

Embodiment 3

[0023] According to the attached figure 1 The process proceeds. 3 tons of semi-dry base catalyst (the dry weight composition is equivalent to 1.9 tons of finished catalyst), containing 10% water, is added in the semi-dry base catalyst feed bin 1. Use high-pressure nitrogen to transport the semi-dry catalyst into the catalyst roasting processor 2, program temperature rise at 20-400°C, pressure 70kPa, nitrogen volume space velocity 1000h -1 After roasting for 100 h under the condition of superficial gas velocity of 0.1 m / s, it is discharged into the post-calcination catalyst silo 3 . The calcined catalyst is transported into the catalyst reduction processor 4 with high-pressure nitrogen, the temperature is programmed at 20-470°C, the pressure is 90kPa, and the hydrogen volume space velocity is 1000h -1 , after reducing for 100 h under the condition of superficial gas velocity of 0.1 m / s, it was unloaded into finished catalyst silo 5 and weighed to obtain 1.8 tons of finished c...

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Abstract

The invention relates to an industrial roasting reduction method of a cobalt-based slurry bed Fischer-Tropsch synthesis catalyst supported on activated carbon, which is independent of a Fischer-Tropsch synthesis process and belongs to a key link in a catalyst production process. The process is divided into three steps: catalyst calcination, catalyst reduction and catalyst slurry preparation, whichare carried out in two fluidized bed reactors or fixed bed reactors and one stirring kettle respectively. Typical operating conditions are that the fluidized bed temperature is 20-500 DEG C, the pressure is 1-200 kPa, the gas volume space velocity is 100-2000h<-1>, the empty tower gas velocity is 0.02-1m / s. 2-10 tons of semi-dry-based catalyst is processed per batch to give 1-8 tons of finished catalyst. The method can be used to control and optimize the above three steps respectively, which is beneficial to synthesize catalyst products with superior performance. Particularly, the semi-continuous production can be realized by the method, which is helpful to improve the production efficiency and reduce the cost of the catalyst.

Description

technical field [0001] The invention relates to an industrial roasting and reduction method for activated carbon-loaded cobalt-based Fischer-Tropsch synthesis catalysts. In the method, the semi-finished cobalt-based Fischer-Tropsch synthesis catalysts produced by the impregnation method are roasted and reduced to prepare finished catalyst slurry for use in industrial slurry state. The Fischer-Tropsch synthesis reaction is carried out in a bed reactor. technical background [0002] Fischer-Tropsch synthesis refers to the synthesis gas (CO / H 2 ) as a raw material, under the action of a catalyst, reacts to generate hydrocarbons, and its products mainly include gasoline, diesel, kerosene, paraffin, liquefied petroleum gas, alcohols, ethers and a series of products with high added value. Therefore, Fischer-Tropsch synthesis is a key technology in processes such as coal indirect liquefaction and methane conversion. Since the 1950s, Fischer-Tropsch synthesis technology has receiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J37/10B01J37/18C10G2/00
CPCB01J23/75B01J37/10B01J37/18C10G2/332
Inventor 卢巍丁云杰朱何俊董文达
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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