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Process for the production of ethylene, propylene and aromatics from oxygenate feedstocks

A compound and ethylene production technology, which is applied in the production of hydrocarbons from oxygen-containing organic compounds, biological raw materials, ethylene production, etc., can solve the problems of low yields of ethylene and propylene

Active Publication Date: 2020-07-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is the technical problem of low ethylene and propylene yields in the prior art when ethylene, propylene and aromatics are co-produced, and a method for producing ethylene, propylene and aromatics from oxygen-containing compound raw materials is provided

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  • Process for the production of ethylene, propylene and aromatics from oxygenate feedstocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] use as figure 1 The circulating fluidized bed reactor shown. The raw material 10 is methanol, the raw material 12 is ethanol, and the feed mass ratio of the raw material 10 and the raw material 12 is 8:2. The reaction temperature of aromatization reactor 1 is 440°C, the catalyst bed density in the reactor is 450 kg / m3, and the mass space velocity of methanol is 0.1 hour -1 , the reaction pressure is 0 MPa in terms of gauge pressure; the reaction temperature of olefin reactor 2 is 480°C, the catalyst bed density in the reactor is 450 kg / m3, and the mass space velocity of methanol is 0.5 hours -1 , the reaction pressure is 0 MPa in terms of gauge pressure; the temperature of regenerator 3 is 550 ° C, and the regeneration pressure is 0 MPa in gauge pressure; the carbon on the semi-spent catalyst is 3% in terms of the mass percentage of the catalyst . The Ag-ZSM-5 catalyst is adopted, the content of Ag element is 1.3%, the mass ratio of ZSM-5 molecular sieve to matrix is...

Embodiment 2

[0036] use as figure 1 The circulating fluidized bed reactor shown. The raw material 10 is methanol, the raw material 12 is dimethyl ether, and the feed mass ratio of the raw material 10 and the raw material 12 is 6:4. The reaction temperature of aromatization reactor 1 is 520°C, the catalyst bed density in the reactor is 150 kg / m3, and the mass space velocity of methanol is 5 hours -1 , the reaction pressure is 0.4 MPa in terms of gauge pressure; the reaction temperature of olefin reactor 2 is 530°C, the catalyst bed density in the reactor is 80 kg / m3, and the mass space velocity of methanol is 6 hours -1 , the reaction pressure is 0.4 MPa in terms of gauge pressure; the temperature of regenerator 3 is 720 ° C, and the regeneration pressure is 0.4 MPa in gauge pressure; the carbon on the semi-spent catalyst is calculated as a mass percentage of the catalyst, and the content is 0.5% . Using Mn-ZSM-11 catalyst, the mass ratio of ZSM-11 molecular sieve and substrate is 3:7; t...

Embodiment 3

[0038] use as figure 1 The circulating fluidized bed reactor shown. Both raw materials 10 and 12 are dimethyl ether, and the feed mass ratio of raw materials 10 and 12 is 9:1. The reaction temperature of aromatization reactor 1 is 470°C, the catalyst bed density in the reactor is 400 kg / m3, and the mass space velocity of methanol is 2 hours -1 , the reaction pressure is 0.25 MPa in gauge pressure; the reaction temperature of olefin reactor 2 is 520°C, the catalyst bed density in the reactor is 200 kg / m3, and the mass space velocity of methanol is 3 hours -1 , the reaction pressure is 0.25 MPa in gauge pressure; the temperature of regenerator 3 is 650 °C, and the regeneration pressure is 0.25 MPa in gauge pressure; the carbon on the semi-spent catalyst is 1.3% in mass percent of the catalyst . The ZSM-5-β catalyst is adopted, and the mass ratio of ZSM-5 and β molecular sieves to the matrix is ​​3.5:6.5. The silicon-aluminum molecular ratio of ZSM-5 molecular sieve is 38; th...

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Abstract

The invention relates to a method for preparing ethylene, propylene and aromatics from oxygen compound raw materials, and mainly solves the problem that when ethylene, propylene and aromatics are co-produced in the prior art, yields of ethylene and propylene are low. According to the method for preparing ethylene, propylene and aromatics from the oxygen compound raw materials, a technical scheme is adopted, wherein the oxygen compound raw material I enters an aromatization reactor from the bottom of the aromatization reactor, and is in contact with a regeneration catalyst for a reaction so asto generate an aromatic-rich product, the oxygen compound raw material II enters an olefin reactor from the bottom of the olefin reactor, and is in contact with a semi-to-be-generated catalyst for a reaction so as to generate products which are rich in ethylene and propylene, and the carbon content of the semi-to-be-generated catalyst is 0.5-3%; through the adoption of the technical scheme, the problem can be solved well, and the method can be applied to the industrial production of ethylene, propylene and aromatics.

Description

technical field [0001] The invention relates to a method for producing ethylene, propylene and aromatic hydrocarbons from oxygen-containing compound raw materials. Background technique [0002] Ethylene, propylene and aromatics (especially triphenyl, Benzene, Toluene, Xylene, or BTX) are important basic raw materials for organic synthesis. Driven by the demand for downstream derivatives, the market demand for ethylene, propylene and aromatics continues to grow. [0003] The steam cracking process using liquid hydrocarbons (such as naphtha, diesel oil, secondary processed oil) as raw material is the main production process of ethylene, propylene and aromatics. This process belongs to the production technology of petroleum route. In recent years, due to the limited supply and high price of petroleum resources, the cost of raw materials has been increasing. Due to these factors, the technology of producing ethylene, propylene and aromatics from alternative raw materials has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/20C07C11/04C07C11/06C07C15/00C07C15/04C07C15/06C07C15/08C07C15/14
CPCY02P20/584Y02P30/20Y02P30/40
Inventor 李晓红齐国祯金永明王莉
Owner CHINA PETROLEUM & CHEM CORP
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