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Process for Propylene and Aromatics Production from Oxygenated Compounds

A technology of compound and propylene, which is applied in the field of producing propylene and aromatics, can solve the problem of low yield of aromatics, achieve the effect of increasing the content of aromatics and improving economic efficiency

Active Publication Date: 2019-07-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the existing process of preparing propylene with oxygen-containing compounds as raw materials, there is a technical problem of low yield of aromatics

Method used

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  • Process for Propylene and Aromatics Production from Oxygenated Compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] When the reaction temperature is 420°C, the reaction pressure is 0, and the weight space velocity of the oxygen-containing compound is 0.2 hours -1 , under the reaction condition that the weight ratio of water to oxygenate is 2.0, the methanol stream 1 contacts and reacts with the catalyst x1 in the first reaction zone to obtain the hydrocarbon stream 2 rich in propylene.

[0021] Stream 2 is separated to obtain propylene stream, aromatics stream, propylene-free C 2 ~C 4 Hydrocarbon Stream 3, C 5 + Non-aromatic stream4.

[0022] At a reaction temperature of 450°C, a reaction pressure of 0 MPa, and a raw material space velocity of 0.1 hour -1 Under the conditions of , the hydrocarbon stream 11 is contacted with the catalyst y1 in the second reaction zone to obtain a mixed hydrocarbon stream 12 rich in aromatics, and the hydrocarbon stream 11 is selected from the hydrocarbon stream 3 and C 5 + Mixed stream of non-aromatic stream 4.

[0023] Hydrocarbon stream 12 is...

Embodiment 2

[0026] At a reaction temperature of 480°C, a reaction pressure of 0.2 MPa, and a weight space velocity of dimethyl ether of 0.5 hours -1 , under the reaction condition that the weight ratio of water to the oxygen-containing compound is 0-2.0, the dimethyl ether stream 1 contacts and reacts with the catalyst x2 in the first reaction zone to obtain the hydrocarbon stream 2 rich in propylene.

[0027] Stream 2 is separated to obtain propylene stream, aromatics stream, propylene-free C 2 ~C 4 Hydrocarbon Stream 3, C 5 + Non-aromatic stream4.

[0028] At a reaction temperature of 500°C, a reaction pressure of 0.2 MPa, and a raw material space velocity of 0.6 hours -1Under the conditions of , the hydrocarbon stream 11 is contacted with the catalyst y2 in the second reaction zone to obtain a mixed hydrocarbon stream 12 rich in aromatics, and the hydrocarbon stream 11 is selected from C 5 + Non-aromatic stream4.

[0029] Hydrocarbon stream 12 is separated to obtain C 2 ~C 4 H...

Embodiment 3

[0032] When the reaction temperature is 550°C, the reaction pressure is 1.0MPa, and the weight space velocity of methanol is 5.0 hours -1 , under the reaction condition that the weight ratio of water to oxygenate is 2.0, the methanol stream 1 contacts and reacts with the catalyst x3 in the first reaction zone to obtain the hydrocarbon stream 2 rich in propylene.

[0033] Stream 2 is separated to obtain propylene stream, aromatics stream, propylene-free C 2 ~C 4 Hydrocarbon Stream 3, C 5 + Non-aromatic stream4.

[0034] At a reaction temperature of 650°C, a reaction pressure of 1.0 MPa, and a raw material space velocity of 4.0 hours -1 Under the conditions of , the hydrocarbon stream 11 is contacted with the catalyst y3 in the second reaction zone to obtain a mixed hydrocarbon stream 12 rich in aromatics, and the hydrocarbon stream 11 is selected from the hydrocarbon stream 3 and C 5 + Mixed stream composed of non-aromatic stream 4.

[0035] Hydrocarbon stream 12 is sepa...

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Abstract

The invention relates to a method used for preparing propylene and aromatic hydrocarbons from oxygen-containing compounds. The method is mainly used for solving a technical problem in the prior art that yield of by-products aromatic hydrocarbons is low in preparation process of propylene from oxygen-containing compounds. According to the method, contact reaction of oxygen-containing compound flow with a catalyst is carried out in a first reaction zone; and contact reaction of a part of or all of C<5><+> non-aromatic hydrocarbon and propylene-free C2-C4 hydrocarbon material flow reaction products from the first reaction zone with a catalyst is carried out in a second reaction zone so as to obtain propylene and aromatic hydrocarbon products. The method can be applied to industrial production of preparation of propylene and aromatic hydrocarbons from the oxygen-containing compounds.

Description

technical field [0001] The invention relates to a method for using oxygen-containing compounds as aromatic hydrocarbons and propylene, in particular to a process for producing propylene and aromatic hydrocarbons by using the mixture of oxygen-containing compounds and hydrocarbons as raw materials. Background technique [0002] Propylene and aromatics are two important basic organic chemical raw materials. The former mainly comes from the catalytic cracking and steam cracking process of petroleum routes, while the latter comes from the catalytic reforming and steam cracking by-product pyrolysis gasoline extraction process of petroleum routes. my country's energy distribution presents the characteristics of lack of oil, less gas, and rich coal. At present, my country's dependence on foreign crude oil has exceeded 50%, and global oil resources are depleting day by day, and oil prices have been fluctuating at high levels for a long time. This makes the energy and chemical indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/20C07C11/06C07C15/02C07C15/04C07C15/06C07C15/08
Inventor 汪哲明周伟许烽
Owner CHINA PETROLEUM & CHEM CORP