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Method for preparing gasoline by using naphtha and methanol

A naphtha and methanol technology is applied in the field of oil processing to achieve the effects of reducing carbon deposition rate, improving liquid yield and prolonging life.

Active Publication Date: 2017-06-13
邯郸市飞耀新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking sherwood oil as the main raw material to increase the octane number of sherwood oil to prepare gasoline has not been reported

Method used

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  • Method for preparing gasoline by using naphtha and methanol

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The molecular sieve catalyst is prepared by spray drying method, the silicon-aluminum ratio of ZSM-5 molecular sieve is 100, and the weight ratio of ZSM-5 molecular sieve: kaolin: silica sol is 3:3:1. Petroleum ether and methanol with a weight ratio of 4:1 are used as raw materials. The raw materials enter the vaporizer 3, the temperature of the vaporizer is 270°C, and enter the reactors 5, 6, and 7 through the heat exchanger 4, and react in the catalyst bed, and the reaction temperature is 350°C. , the reaction pressure is 1.5MPa, and the weight space velocity of the raw material is 8h -1 . The reaction product enters the cooler 8 through the heat exchanger 4, and enters the oil-water separator 9 after cooling to separate the water, and the oil product enters the distillation tower 10 for separation to obtain gasoline, liquefied gas and dry gas. The reaction results are shown in Table 1.

Embodiment 2

[0027] The molecular sieve catalyst is prepared by spray drying method, the silicon-aluminum ratio of ZSM-5 molecular sieve is 100, and the weight ratio of ZSM-5 molecular sieve: kaolin: silica sol is 3:3:1. Using petroleum ether and methanol with a weight ratio of 5:1 as raw materials, the raw materials enter the vaporizer 3, the temperature of the vaporizer is 270°C, and enter the reactors 5, 6, and 7 through the heat exchanger 4, and react in the catalyst bed, the reaction temperature is 350°C , the reaction pressure is 1.5MPa, and the weight space velocity of the raw material is 8h -1 . The reaction product enters the cooler 8 through the heat exchanger 4, and enters the oil-water separator 9 after cooling to separate the water, and the oil product enters the distillation tower 10 for separation to obtain gasoline, liquefied gas and dry gas. The reaction results are shown in Table 1.

Embodiment 3

[0029] The molecular sieve catalyst is prepared by spray drying method, the silicon-aluminum ratio of ZSM-5 molecular sieve is 20, and the weight ratio of ZSM-5 molecular sieve: kaolin: silica sol is 2:4:1. Using petroleum ether and methanol with a weight ratio of 5:1 as raw materials, the raw materials enter the vaporizer 3, the temperature of the vaporizer is 180°C, and enter the reactors 5, 6, and 7 through the heat exchanger 4, and react in the catalyst bed layer, and the reaction temperature is 200°C , the reaction pressure is 5.0MPa, and the weight space velocity of the raw material is 0.1h -1 . The reaction product enters the cooler 8 through the heat exchanger 4, and enters the oil-water separator 9 after cooling to separate the water, and the oil product enters the distillation tower 10 for separation to obtain gasoline, liquefied gas and dry gas. The reaction results are shown in Table 1.

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Abstract

The invention relates to the technical field of oil product processing, and particularly relates to a method for preparing gasoline by using naphtha and methanol. According to the method, naphtha and methanol serving as raw materials in a weight ratio of (4-5):1 react with a molecular sieve catalyst at the temperature of 200-500 DEG C, the pressure of 0.1-5.0MPa and a raw material weight space velocity of 0.1-10h<-1>. By adopting the preparation method, circulating air is not adopted for temperature control in a reaction system, and the reaction equipment is simple; saturated alkane, especially straight-chain paraffin, is the ingredient of naphtha, can perform alkylation reaction with methanol under the reaction condition of the method, so that the carbon chain is prolonged, and heavy petroleum ether is realized to become a qualified gasoline component.

Description

technical field [0001] The invention relates to the technical field of oil product processing, in particular to a method for preparing gasoline by using naphtha and methanol as raw materials. Background technique [0002] The conversion of methanol to gasoline is a strong exothermic reaction. The temperature of the reactor is high and difficult to control. If the released heat cannot be removed from the reactor well, it will cause overheating, resulting in faster carbon deposition of the catalyst, short service life, and short overall life. long and high yield of heavy oil. Therefore, in the reaction system, it is necessary to use the circulating gas which is several times larger than the feed methanol as a cooling or heating medium for temperature control. Seriously affect the stability of the reaction product and the service life of the catalyst, shorten the regeneration period of the catalyst, and the process and equipment are complex, energy consumption is high, and inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G35/095C10G3/00
CPCY02P30/20C10G35/095C10G3/49
Inventor 郝金付
Owner 邯郸市飞耀新能源科技有限公司
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