Catalytic oxidative dehydrogenation method for raw material containing CO gas

A technology for catalytic oxidation and raw materials, applied in the direction of carbon monoxide, can solve the problems of high CO loss rate and low hydrogen removal rate, and achieve the effect of good technical effect

Active Publication Date: 2015-04-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the presence of CO reducing gas, the existing catalysts and processes have low hydrogen removal rate and high CO loss rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Dissolve ferric oxalate in water, heat to 70°C, and impregnate in Al with an average particle diameter of 50 microns under vacuum rotation 2 o 3 pellets, and then dried at 120°C for 6 hours. SnCl 2 , magnesium nitrate and palladium nitrate were dissolved in water respectively, and the pH of the solution was adjusted to about 4 with HCl, and then the solution was heated to 80°C, impregnated on the carrier again, then dried at 140°C for 8 hours, and then heated at 450°C Calcined in air atmosphere for 4 hours, reduced in 400 DEG C of hydrogen atmosphere for 2 hours to obtain catalyst A, its composition is as shown in Table 1:

[0024] Weigh 300 grams of the catalyst A prepared above, put it into a small fluidized bed reactor, use CO mixed gas with a hydrogen content of 10% as a raw material, and react at a reaction temperature of 220°C and a volume space velocity of 3000 hours -1 , the oxygen / hydrogen molar ratio is 0.6: 1, under the condition of 0.5MPa reaction pressur...

Embodiment 2

[0026] Dissolve ferric nitrate in water, heat to 80°C, and impregnate in Al with an average particle diameter of 60 microns under vacuum rotation 2 o 3 pellets, and then dried at 120°C for 4 hours. Dissolve potassium chloride and ammonium chloropalladate in water respectively, adjust the solution with HCl to make the pH value about 4, then heat the solution to 80°C, impregnate it on the carrier again, and then dry it at 140°C for 4 hours, then Calcined in air atmosphere at 450°C for 4 hours, and reduced in hydrogen atmosphere at 400°C for 2 hours to obtain catalyst B.

[0027] Weigh 300 grams of the catalyst B prepared above, put it into a small fluidized bed reactor, use CO mixed gas with a hydrogen content of 8% as a raw material, and react at a reaction temperature of 180°C and a volume space velocity of 1000 hours -1 , the oxygen / hydrogen molar ratio is 0.7:1, under the condition of reaction pressure being 0.2MPa, the reaction result is: the loss rate of CO is 0.21%, and t...

Embodiment 3

[0029] Dissolve niobium nitrate and rubidium nitrate in water respectively, vacuum impregnate in Al with an average particle diameter of 100 microns 2 o 3 On the pellets, dry at 140°C for 4 hours. Dissolve ammonium chloroplatinate in ethanol solution, impregnate it on the carrier again, dry at 140°C for 4 hours, then bake in air atmosphere at 450°C for 4 hours, reduce in hydrogen atmosphere at 300°C for 4 hours, and then cool in nitrogen atmosphere to room temperature to obtain catalyst C, the composition of which is shown in Table 1.

[0030] Weigh 300 grams of catalyst C prepared above, put it into a small fluidized bed reactor, use CO mixed gas with a hydrogen content of 0.5% as a raw material, and react at a reaction temperature of 200°C and a volume space velocity of 3000 hours -1 , the oxygen / hydrogen molar ratio is 1:1, and the reaction pressure is under the condition of -0.05MPa, the reaction result is: the loss rate of CO is 0.33%, and the hydrogen content in the re...

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Abstract

The invention relates to a catalytic oxidative dehydrogenation method for a raw material containing CO gas. According to the method, the technical problems of the prior art of low hydrogen desorption rate and high CO loss rate are solved. The method comprises the following steps of: taking CO-containing gas as the raw material, and contacting the raw material with a noble metal fluid catalyst under the conditions of reaction temperature at 80-260 DEG C, hourly space velocity at 100-10000 per hour, mole ratio of oxygen to hydrogen being (0.5-10):1 and reaction pressure at -0.08-5.0MPa, thereby oxidizing the hydrogen in the raw material into water. According to the technical scheme, the problems are more efficiently solved. The method is suitable for the industrial production of oxidative dehydrogenation of the raw material containing CO gas.

Description

technical field [0001] The invention relates to a method for catalytic oxidative dehydrogenation of CO-containing gas raw materials, in particular to a method for removing hydrogen from synthesis gas to ethylene glycol CO raw material gas. Background technique [0002] Oxalate is an important organic chemical raw material, which is widely used in the fine chemical industry to produce various dyes, medicines, important solvents, extractants and various intermediates. In the 21st century, oxalate, as a degradable and environmentally friendly engineering plastic monomer, has received extensive international attention. In addition, oxalic acid can be obtained by normal pressure hydrolysis of oxalate, and oxalamide can be obtained by normal pressure ammonia solution. Oxalate can also be used as a solvent to produce pharmaceutical and dye intermediates, etc., such as various condensation reactions with fatty acid esters, cyclohexylacetophenone, amino alcohols, and many heterocycl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/18C01B32/40
Inventor 刘俊涛李蕾张琳娜
Owner CHINA PETROLEUM & CHEM CORP
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