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Liquefied gas hydrogenating, olefin content decreasing and desulfurizing catalyst and preparation method thereof

A desulfurization catalyst and catalyst technology, which are applied in physical/chemical process catalysts, chemical instruments and methods, and hydrocarbon oil treatment, etc., can solve the problems of inability to meet deep hydrogenation saturation, high desulfurization temperature and pressure, and complex processes, and achieve reduced Interaction, good low temperature and low pressure activity, and the effect of strengthening dispersion

Inactive Publication Date: 2012-06-20
WUHAN KELIN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] To sum up, palladium-based and nickel-based catalysts are used to remove olefins from liquefied petroleum gas, which must be desulfurized first, and the process is complex and costly. However, the existing molybdenum-based catalysts have high desulfurization temperature and pressure, and cannot meet the requirements of deep hydrogenation saturation. Require

Method used

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  • Liquefied gas hydrogenating, olefin content decreasing and desulfurizing catalyst and preparation method thereof
  • Liquefied gas hydrogenating, olefin content decreasing and desulfurizing catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 86g pseudo-boehmite (water content 30%, the same below), 49g metatitanic acid, and 3g sesbania powder, mix and grind them evenly, add an appropriate amount of 5% nitric acid, stir and roll evenly, and then extrude. After standing for 4h, drying at 110℃ for 3h, and calcining at 500℃ for 7h to obtain Al 2 O 3 -TiO 2 Vector I. Then, weigh 2.0g of ammonium fluoride and dissolve in 52.5ml of deionized water, and add Al 2 O 3 -TiO 2 Carrier I and other bodies are immersed for 2h, dried at 100℃, and calcined at 350℃ for 6h to obtain modified Al 2 O 3 -TiO 2 Carrier II. Where Al 2 O 3 : TiO 2 6:4, F - 1%, pore volume is 0.26cm 3 / g, the specific surface area is 158m 2 / g, the bulk density is 1.05g / ml.

Embodiment 2

[0033] Weigh 100g of pseudo-boehmite, 36g of metatitanic acid, and 4g of sesame powder, mix and grind uniformly, then add an appropriate amount of 6.5% nitric acid, stir and roll evenly, and then extrude into shape. After standing for 4 hours, dry at 130°C for 4 hours. After calcination at 400℃ for 8h, Al is obtained 2 O 3 -TiO 2 Carrier. Then, weigh 5.9g ammonium fluoride and dissolve in 55ml deionized water, add Al 2 O 3 -TiO 2 The carrier and other bodies are immersed for 7 hours, dried at 120°C, and calcined at 400°C for 4 hours to obtain modified Al 2 O 3 -TiO 2 Carrier III. Where Al 2 O 3 : TiO 2 7:3, F - 3%, pore volume is 0.31cm 3 / g, the specific surface area is 192m 2 / g, the bulk density is 0.96g / ml.

Embodiment 3

[0035] Weigh 114g of pseudo-boehmite, 24.5g of metatitanic acid, and 5g of sesbania powder, mix and grind uniformly, then add an appropriate amount of 8% nitric acid, stir and roll uniformly, and then extrude into shape. After standing for 4h, dry at 150℃ for 4h , And then calcined at 600℃ for 6h to obtain Al 2 O 3 -TiO 2 Carrier. Then, weigh 9.8g ammonium fluoride dissolved in 58ml deionized water, 2 O 3 -TiO 2 The carrier and other bodies are immersed for 12h, dried at 150℃, and calcined at 600℃ for 2h to obtain modified Al 2 O 3 -TiO 2 Vector IV. Where Al 2 O 3 : TiO 2 8:2, F - 5%, pore volume is 0.38cm 3 / g, the specific surface area is 195m 2 / g, the bulk density is 0.95g / ml.

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Abstract

The invention provides a liquefied gas hydrogenating, olefin content decreasing and desulfurizing catalyst and a preparation method thereof. The catalyst comprises a carrier and activated substances, the carrier adopts F-modified Al2O3-TiO2 composite oxides, activated substances comprise molybdenum, nickel and cobalt, the molybdenum is a main component, and the nickel and the cobalt are auxiliary components. The preparation method of the catalyst comprises a process for preparing a modified Al2O3-TiO2 compound oxide carrier and a process for preparing the liquefied gas hydrogenating, olefin content decreasing and desulfurizing catalyst by a co-impregnation method. The liquefied gas hydrogenating, olefin content decreasing and desulfurizing catalyst has the advantages of double functions of resisting to sulfur-poisoning and hydrogenating, olefin content decreasing and desulfurizing of a traditional molybdenum catalyst, simultaneously, low-temperature and low-pressure activity is good, deeply hydrogenating saturability is high, and activity is stable.

Description

Technical field [0001] The invention relates to the technical field of hydrogenation catalysts, and is particularly suitable for catalysts required for the hydrogenation reaction of olefins and organic sulfur in liquefied gas and C5 and other light hydrocarbon raw materials, and a preparation method thereof. Background technique [0002] In recent years, with the rapid improvement of my country’s crude oil processing capacity and the continuous increase of ethylene production, C4 resources as a by-product of petrochemical industry are also expanding, and their total production has exceeded 3.0Mt / a; on the other hand, the production of ethylene The continuous increase has caused the tension of ethylene raw materials, and the subject of liquefied gas as the raw material for ethylene cracking has emerged. The liquefied gas after superposition or aromatization has 1 to 5% residual olefins. If it is directly used as raw material for ethylene cracking without treatment, olefins will und...

Claims

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Application Information

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IPC IPC(8): B01J27/135C10G49/04
Inventor 王国兴张先茂王天元王泽陈宗杰王海洋赵志杰
Owner WUHAN KELIN FINE CHEM
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