Method of reducing olefine and benzene content in gasoline

A technology of benzene content and gasoline, applied in the direction of catalytic reforming of naphtha, can solve the problems of low diesel conversion rate and high only 22.6, and achieve the effects of simple process flow, mild reaction conditions, and wide range of raw materials.

Active Publication Date: 2005-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has simple process and low reaction temperature, but the conversion rate of olefin superimposition to diesel oil is low. When the boiling point is 180°C, the highest yield of diesel oil is only 22.6%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] Prepare Cs according to the method described in Preparation Scheme 1 2.5 h 0.5 PW 12 o 40 catalyst

[0038] 1. Accurately weigh 40.00gH 3 PW 12 o 40 Soluble in water to make 8% aqueous solution;

[0039] 2. Accurately weigh 5.68g of anhydrous Cs according to the requirements of stoichiometry 2 CO 3 (analytical pure) dissolved in water to form a 3% aqueous solution;

[0040] 3. Under continuous stirring, the Cs prepared in step (2) 2 CO 3 The solution is continuously and slowly added dropwise to the phosphotungstic acid solution prepared in step (1). After the dropwise addition, continue to stir for 30 minutes. After evaporating the water at 70°C, treat it at 110°C for 2 hours, and cool it. Solid is Cs 2.5 h 0.5 PW 12 o 40 catalyst.

example 2

[0042] Prepare Al by the method described in Preparation Scheme 2 2 (HPW 12 o 40 ) 3 catalyst

[0043] 1. Accurately weigh 40.00gH 3 PW 12 o 40 Soluble in water to make 10% aqueous solution;

[0044] 2. Accurately weigh 3.48g Al(NO 3 ) 3 9H 2 O (analytically pure) was dissolved in water to form a 5% aqueous solution;

[0045] 3. Under continuous stirring, mix the above prepared solutions together, stir for 30 minutes, evaporate the water at 90°C, then treat at 110°C for 2 hours, and cool, the obtained solid is Al 2 (HPW 12 o 40 ) 3 catalyst.

example 3

[0047] Prepare loading capacity 25% H by the method described in preparation scheme 3 3 PW 12 o 40 / silicone catalyst

[0048] 1. Set the specific surface area to 432m 2 / g of silica gel with an average pore diameter of 8.7nm was treated at 150°C for 4 hours. After cooling to room temperature, weigh 60.00 g for later use.

[0049] 2. Accurately weigh 20.00gH 3 PW 12 o 40 Dissolve in water to form an 8% aqueous solution, and quickly add the silica gel prepared in step (1). Leave it for 2 hours, evaporate the water at 70°C, then treat it at 110°C for 2 hours, and cool to get H 3 PW 12 o 40 / Silica gel catalyst, abbreviated as 25%H 3 PW 12 o 40 / Silica gel.

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Abstract

A process for decreasing the content of olefin and benzene in gasoline includes such steps as contacting raw gasoline with heteropoly compound MmHa-bmXY12O40nH2O, reacting at 50-250 deg.C and collecting the reaction resultant.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing and relates to a method for reducing the content of olefins and benzene in gasoline. Background technique [0002] With the increasingly stringent environmental protection regulations, the content of olefins and benzene in gasoline is subject to stricter and stricter restrictions. However, due to the large proportion of catalytic cracking units in my country's oil refining units, more than 80% of commercial gasoline comes from cracked gasoline, resulting in olefin content far exceeding that in European and American gasoline products. Therefore, reducing the olefin content in gasoline to improve gasoline quality is the primary problem that must be solved to meet environmental protection requirements. For benzene, although the proportion of reformed gasoline in my country is not large, the content of benzene in commercial gasoline still exceeds the environmental protection control stan...

Claims

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Application Information

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IPC IPC(8): C10G35/04
Inventor 杜泽学凌云段启伟闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
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