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Method for producing ethylene from ethanol by combination hydrocarbons catalytic conversion

A technology of ethanol and hydrocarbons, applied in catalytic cracking, bulk chemical production, carbon compound catalysts, etc., can solve problems such as high energy consumption and complicated process, and achieve the effect of solving heating problems

Active Publication Date: 2008-01-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, the existing technologies all adopt the method of preheating raw materials or supplying fuel externally to provide heat, which makes the process too complicated or the energy consumption is too high

Method used

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  • Method for producing ethylene from ethanol by combination hydrocarbons catalytic conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The ethanol raw material and hydrocarbon raw material used in this example are respectively the ethanol raw material containing 95% ethanol brewed from grain and vacuum gas oil (VGO). The properties of VGO are shown in Table 1. The catalyst grade used in this embodiment is CGP-1 (containing 25% by weight of REY zeolite, 10% by weight of ZSP zeolite, and the balance is a carrier, all based on the total weight of the catalyst), provided by Sinopec Catalyst Qilu Branch Production.

[0042] The ethanol raw material enters the fluidized bed reactor and contacts with the CGP-1 catalyst. At a temperature of 340°C and a pressure (gauge pressure) of 0.1 MPa, the weight ratio of the catalyst to the ethanol raw material (agent-alcohol ratio) is 1, and the weight hourly space velocity is 1.0h -1 React under the condition that reacts, and reactant flow obtains carbon deposition catalyst and product flow through separation, and this product flow further separates and obtains target p...

Embodiment 2

[0047] The ethanol raw material used in this example is the same as in Example 1, and the hydrocarbon raw material is atmospheric residue, and the properties of the atmospheric residue are shown in Table 1. The catalyst grade used in this example is MMC-2 (containing 10% by weight of USY zeolite, 20% by weight of ZSM-5 zeolite, and the balance is a carrier, all based on the total weight of the catalyst), provided by Sinopec Catalyst Qilu branch production.

[0048] The ethanol raw material enters the fluidized bed reactor and contacts with the MMC-2 catalyst, at a temperature of 360°C, a pressure (gauge pressure) of 0.1MPa, a weight ratio of the catalyst to the ethanol raw material (agent-alcohol ratio) of 5, and a weight hourly space velocity of 1.5h -1 React under the condition that reactant stream is separated to obtain carbon deposit catalyst and product stream, this product stream further separates and obtains target product ethylene, and product distribution is as shown ...

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Abstract

Disclosed is a combined hydrocarbons catforming method to produce ethane from ethanol. Ethanol raw materials contact with Y zeolite catalysts and the reaction products flow to a segregator, getting coked catalysts and target ethane; hydrocarbon raw materials contact with Y zeolite catalysts and the reaction products flow to a segregator, getting spent catalysts and reaction effluent and the reaction effluent is further separated to get gas and liquid products such as gasoline; all or part of the coked catalysts or spent catalysts get into a reactivator for coke-burning regeneration; the regenerated catalysts are divided into two parts, one part returns to contact with the hydrocarbon raw materials and the other part, after cooling, returns to contact with the ethanol raw materials. The method properly uses the surplus heat energy in the course of hydrocarbons catalytic conversion, solving the problem of heat energy supply in ethanol conversion, ensuring that the ethanol can be converted to ethane continuously. The content of ethene in the gas products of the ethanol catforming exceeds 95 percent and the conversation rate of ethanol can reach 99 percent.

Description

technical field [0001] The invention relates to a method for producing ethylene from ethanol, more specifically, the invention belongs to a method for producing ethylene from ethanol through combined catalytic conversion of hydrocarbons. Background technique [0002] Humanity has just entered the 21st century, and the contradiction between supply and demand of global oil has become increasingly prominent. With the increasing demand for various petroleum and petrochemical products, the price of crude oil in the market continues to rise. This situation has led to high market prices of low-carbon olefins (especially ethylene, propylene) and low-molecular ethers (such as dimethyl ether, ether, etc.), which are important chemical products that use petroleum and petrochemical products as raw materials. Therefore, finding other alternative raw materials such as agricultural and forestry by-product ethanol, methanol produced from natural gas or coal to produce low-carbon olefins an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/00C07C11/04B01J29/08C10G70/00
CPCC10G2300/1055C10G2300/1077C10G2300/104C10G2300/4018C10G2300/1033C10G2300/1074C10G2400/20C10G57/00C07C1/24C07C2529/08C10G11/05C10G2300/107C10G2300/1044Y02P20/584C07C11/04Y02P20/52
Inventor 吴治国谢文华谢朝钢刘强慕旭宏张久顺罗一斌舒兴田颜承汉
Owner CHINA PETROLEUM & CHEM CORP
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