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Catalyst for catalytic cracking of gasoline while reducing olefine and its preparing process

A catalyst technology for catalytic cracking of gasoline and olefins, which is applied in the petroleum industry, reforming naphtha, etc. It can solve the problems of high reaction temperature, low space velocity, and low activity of olefin stacking, and achieve the reduction of olefins, simple process flow, The effect of small investment in equipment

Inactive Publication Date: 2003-01-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The superposition reaction has a high reaction temperature and a low space velocity, indicating that the catalyst activity is not high
The above patents are all based on superimposed gasoline distillate as raw material or cycle, indicating that these catalysts are not highly active on superimposed olefins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 1.4g Fe 2 (SO 4 ) 3 9H 2 O, 65.5g (dry basis, pore volume 0.8-1.1ml / g, specific surface area 200-350m 2 / g, pore diameter 50>nm accounted for 80-95%) macroporous γ-Al 2 o 3 Dry glue and 57.5g adhesive (20% dry basis) made from SB alumina dry glue and dilute nitric acid, and then kneaded to shape. Dry at 80-120°C for 4-10 hours, and then bake at 450-550°C for 4-10 hours to prepare 78g of catalyst precursor. Weigh 40g NiSO 4 ·7H 2 Add O to deionized water to make a saturated impregnation solution, take 78g of the catalyst precursor for saturated impregnation, blow it with a hair dryer after 30-60 minutes until fluffy, dry at 120°C for 2-4 hours, activate at 450-550°C After 4 hours, the finished catalyst A was obtained, and the catalyst A contained NiSO 4 22(m)%, Fe 2 (SO 4 ) 3 1.0(m)%.

Embodiment 2

[0036] Weigh 40gNiSO 4 ·7H 2 O, 1.6g Fe 2 (SO 4 ) 3 9H 2 O was added to deionized water to make a saturated impregnating solution, and then weighed 77g of γ-Al 2 o 3 The carrier is saturated impregnated, dried and activated according to the conditions of embodiment 1 to obtain catalyst B, which contains NiSO 4 22.0(m)%, Fe 2 (SO 4 ) 3 1.1(m)%.

Embodiment 3

[0038] Using 1.8g CoSO 4 ·7H 2 O instead of Fe 2 (SO 4 ) 3 9H 2 O, the carrier uses γ-Al 2 o 3 Carrier, catalyst preparation method are with embodiment 2, get catalyst C containing NiSO 4 22.0(m)%, CoSO 4 1.0(m)%.

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Abstract

A catalyst for catalytic cracking gasoline while decreasing olefine contains NiSO4 as primary active components, Fe2(SO4)3 or CoSO4 as secondary one, and gamma-Al2O3 as carrier. It is prepared through immersing or kneading. Its advantages are simple preparing process, high activity of decreasing olefine, high output of diesel oil as by-product, and less investment in equipment.

Description

technical field [0001] The invention belongs to the technical field of petrochemical processing, and in particular relates to a catalytic cracking gasoline superimposed olefin-reducing catalyst and a preparation method thereof. The catalyst is a sulfate containing two Group VIII transition metals, NiSO 4 Main active component, Fe 2 (SO 4 ) 3 or CoSO 4 as a side active ingredient. The catalyst uses γ-Al 2 o 3 As a support, it is prepared by impregnation or kneading. Background technique [0002] Along with the rapid development of the automobile industry, the consumption of vehicle fuel is increasing day by day, but the pollution caused by vehicle exhaust to the atmosphere has attracted widespread attention from all over the world. Specification requirements are also constantly improving, and the content of sulfur, aromatics, olefins and oxides in gasoline is becoming more and more stringent. According to the requirements of clean fuel standards promulgated by releva...

Claims

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Application Information

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IPC IPC(8): C10G35/095
Inventor 蔡天锡贺民樊宏飞
Owner DALIAN UNIV OF TECH
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