Method for catalytic conversion of methanol and naphtha into light olefins

A low-carbon olefin and catalytic conversion technology, which is applied in catalytic cracking, petroleum industry, hydrocarbon cracking and hydrocarbon production, etc., can solve the problem of low olefin yield, improve single-pass yield, increase yield, and ensure gas-solid contact time Effect

Active Publication Date: 2011-12-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is the problem that the yield of olefins in the prior art is not high, and a new method for catalytic conversion of methanol and naphtha into light olefins is provided

Method used

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  • Method for catalytic conversion of methanol and naphtha into light olefins
  • Method for catalytic conversion of methanol and naphtha into light olefins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] in such as figure 1 In the shown reaction-regeneration device, the catalyst is ZSM-5, and the silicon-aluminum ratio is 50 (volume). The methanol conversion reactor is a fast fluidized bed, the average temperature of the reaction zone of the methanol conversion reactor is 440°C, the gas phase velocity is 1.12 m / s, the methanol feed is 99.5% pure, and the methanol weight hourly space velocity is 5.7 hours -1 , the ratio of the mass flow rate of the regenerated inclined tube catalyst to the mass flow rate of the methanol feed is 0.7, the average temperature of the regenerator is 675° C., the carbon deposition amount of the spent agent is 2.7% (weight), and the carbon deposition amount of the regenerated catalyst is 0.29% (weight). . The auxiliary settling stripper is located on the upper part of the regenerator, and the stripping zone is built in the regenerator. The naphtha conversion reactor is a variable-diameter riser, one riser, the ratio of the diameter of the upp...

Embodiment 2～3

[0021] According to the conditions described in Example 1, only the temperature in the reaction zone of the methanol conversion reactor was changed. The experimental results are shown in Table 1.

[0022] Table 1

[0023]

Embodiment 4～5

[0025] According to the conditions described in Example 1, only the gas phase velocity in the reaction zone of the methanol conversion reactor was changed. The experimental results are shown in Table 2.

[0026] Table 2

[0027]

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Abstract

The invention discloses a method for catalyzing and converting methanol and naphtha into low-carbon olefins, which is used for mainly solving the problem of low yield of the low-carbon olefins in the prior art. In a technical scheme adopted in the invention, a reaction device comprising a methanol reactor, a regenerator, a naphtha converting reactor, an auxiliary settlement steam stripping device, a gas-solid cyclone separator and a catalyst circulation pipeline is used for organically coupling a process for preparing olefins form the methanol and a process for catalytically pyrolyzing the naphtha to prepare the olefins, thus, the problem is favorably solved. The method can be used for industrial production of the low-carbon olefins.

Description

technical field [0001] The invention relates to a method for catalytically converting methanol and naphtha into light olefins. technical background [0002] Low-carbon olefins, namely ethylene and propylene, are two important basic chemical raw materials, and their demand is increasing. Generally, ethylene and propylene are produced through petroleum routes, but due to the limited supply and high price of petroleum resources, the cost of producing ethylene and propylene from petroleum resources continues to increase. In recent years, people have begun to vigorously develop the technology of converting alternative raw materials into ethylene and propylene. Among them, an important class of alternative raw materials for the production of light olefins are oxygenates, such as alcohols (methanol, ethanol), ethers (dimethyl ether, methyl ethyl ether), esters (dimethyl carbonate, methyl formate Esters), etc., these oxygenated compounds can be converted from coal, natural gas, bi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C4/06C07C11/06C07C11/04C10G11/05
CPCY02P20/584Y02P30/20Y02P30/40
Inventor 齐国祯俞志楠陈伟王华文
Owner CHINA PETROLEUM & CHEM CORP
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