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Thioalcohol catalytic oxidation catalyst in light oil product and preparation method thereof

A light oil, catalytic oxidation technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of uneven distribution of active components, etc. Achieve good economic benefits and promotion value, not easy to lose, safe preparation process

Inactive Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst is prepared by kneading method, and the distribution of active components is not uniform enough.

Method used

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  • Thioalcohol catalytic oxidation catalyst in light oil product and preparation method thereof
  • Thioalcohol catalytic oxidation catalyst in light oil product and preparation method thereof
  • Thioalcohol catalytic oxidation catalyst in light oil product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Catalyst C-1:

[0035] Weigh 122gMg(NO 3 ) 2 , 190gAl(NO 3 ) 3 , 21.30gCo(NO 3 ) 2 ·6H 2 O, 6.80g(NH 4 ) 2 ·MoO 4 , 11.50g Bi(NO 3 ) 3 ·5H 2 O, 14.60g La(NO 3 ) 3 ·6H 2 O, 6.00g citric acid was added to 200ml deionized water, mechanically stirred and heated to 70°C, and a solution A containing the four active components of cobalt, molybdenum, bismuth and lanthanum was prepared in one step.

[0036] Under vigorous stirring, the mass concentration of NaOH and Na 2 CO 3 The mixed solution and solution A are dropped into deionized water in a co-current manner, and the pH of the solution is maintained at 9.0±0.2. After full precipitation, the filter cake is transferred to the oxalic acid solution with a mass concentration of 1.5%. The filter cake is beaten and washed with vigorous stirring. The suction filter is repeated 3 times. The filter cake is dried at 80°C for 12 hours, and the dried catalyst is roasted. , 20°C is raised to 120°C in 1h and kept at 120°C for 1h; then it is r...

Embodiment 2

[0039] Catalyst C-2:

[0040] Weigh 111gMg(NO 3 ) 2 , 173gAl(NO 3 ) 3 , 19.40g Co(NO 3 ) 2 ·6H 2 O, 8.17g(NH 4 ) 2 ·MoO 4 , 14.60gBi(NO 3 ) 3 ·5H 2 O, 15.90g La(NO 3 ) 3 ·6H 2 O, 6.00g citric acid was added to 200ml deionized water, mechanically stirred and heated to 60°C, and a solution A containing the four active components of cobalt, molybdenum, bismuth and lanthanum was prepared in one step.

[0041] Under vigorous stirring, the mass concentration of NaOH and Na 2 CO 3 The mixed solution and solution A were dropped into deionized water in a co-current manner to maintain the pH of the solution at 8.7±0.2. After full precipitation, the filter cake is transferred to a 1.0% mass concentration of oxalic acid solution, and the slurry is washed under vigorous stirring, suction filtration is repeated 3 times, the filter cake is dried at 80°C for 12 hours, and the dried catalyst is roasted , 20 ℃ after 1 h to 120 ℃, constant temperature at 120 ℃ for 1 h; then after 1 h to 300 ℃, consta...

Embodiment 3

[0044] Catalyst C-3:

[0045] Weigh 148gMg(NO 3 ) 2 , 156gAl(NO 3 ) 3 , 17.50g Co(NO 3 ) 2 ·6H 2 O, 8.85g (NH 4 ) 2 ·MoO 4 , 12.50gBi(NO 3 ) 3 ·5H 2 O, 10.6g La(NO 3 ) 3 ·6H 2 O, 6.00g citric acid was added to 200ml deionized water, mechanically stirred and heated to 70°C, and a solution A containing the four active components of cobalt, molybdenum, bismuth and lanthanum was prepared in one step.

[0046] Under vigorous stirring, the mass concentration of NaOH and Na 2 CO 3 The mixed solution and solution A are dropped into deionized water in a co-current manner, and the pH of the solution is maintained at 9.3±0.2. After full precipitation, the filter cake is transferred to the oxalic acid solution with a mass concentration of 3.0%. The filter cake is beaten and washed under vigorous stirring. The suction filter is repeated 3 times. The filter cake is dried at 80°C for 12 hours, and the dried catalyst is roasted. , 20 ℃ after 1 h to 120 ℃, constant temperature at 120 ℃ for 1 h; the...

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Abstract

The invention belongs to the technical field of mercaptan oxidation, and concretely relates to a thioalcohol catalytic oxidation catalyst in light oil product and a preparation method thereof. The catalyst comprises four active components of Co, Mo, Bi and La and a magnesium-aluminum composite carrier, the strength is 110-140 N.cm<-1>, the specific surface is 90-190 m<2>.g<-1>, and the specific pore volume is 0.3-0.5 cm<3>.g<-1>. When the catalyst is used for desulfurization oxidation, addition of liquid alkali is not required, and discharge of waste lye is reduced. The addition of a metal element Bi increases the alkalinity of the catalyst, and obviously increases thioalcohol oxidative activity and thioalcohol stability. The invention also provides the preparation method, during the preparation method, nitric acid is not required, the preparation process is safe and environmentally friendly; a coprecipitation method is employed in the preparation process, the active components are uniformly dispersed, and are difficult to loss.

Description

Technical field [0001] The invention belongs to the technical field of mercaptan oxidation, and specifically relates to a mercaptan catalytic oxidation catalyst in light oil products and a preparation method thereof. Background technique [0002] Light oil products include naphtha, catalytic gasoline, straight-run aviation kerosene, lamp kerosene, diesel, etc. Light oil contains a considerable amount of sulfides, among which mercaptans (RSH) have the greatest impact on oil quality. It not only makes light oil products produce bad smell, but also affects the stability of oil products. In addition, mercaptans are also corrosive under high temperature conditions. Its presence will cause the copper sheets of light oil products to fail to corrode, which will cause the doctoral test of gasoline and aviation kerosene to fail, and the product quality cannot be guaranteed. Unable to pass the factory. Therefore, in the oil processing process, the oil must be deodorized and refined. Reg...

Claims

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Application Information

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IPC IPC(8): B01J23/887C10G27/04
Inventor 侯磊吕爱梅朱相春杨忠梅孟宪谭
Owner CHINA PETROLEUM & CHEM CORP
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