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Device and method for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4

A technology of ethyl tert-butyl ether and mixed carbon four, which is applied in chemical instruments and methods, preparation of ether by addition of unsaturated compounds, preparation of ether, etc., can solve the problem of low utilization rate and achieve the effect of improving comprehensive utilization rate

Inactive Publication Date: 2013-07-10
EAST CHINA UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

At present, the by-products of C4 in refineries, except for a small part of high-octane gasoline additives produced through etherification and alkylation, most of the rest are directly sold as petroleum liquefied gas products, and the utilization rate is low

Method used

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  • Device and method for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4
  • Device and method for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4
  • Device and method for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4

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Embodiment Construction

[0051] With reference to the accompanying drawings, a method for co-producing 1,3-butadiene and ethyl tert-butyl ether with DMTO by-product coal-based mixed C4 as raw material provided by the present invention comprises the following three sections in turn: 1. Coal 2. Butene oxidative dehydrogenation section; 3. Butadiene refining section.

[0052] 1. Coal-based mixed carbon four pretreatment and etherification section includes coal-based mixed carbon four pretreatment steps and etherification steps; coal-based mixed carbon four pretreatment steps include:

[0053] (1) To remove carbon five components, pump the carbon four in the coal-based mixed carbon four storage tank into the five decarbonization tower. The operating pressure of the tower is 4atm, the temperature at the top of the tower is maintained at 41.8°C, and the temperature at the bottom of the tower is 84.6°C;

[0054] (2) Hydroisomerization reaction, enter the hydroisomerization reactor from the output of step (1)...

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Abstract

The invention discloses a method for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4. The method sequentially comprises the following three working sections: coal-based mixing C4 pretreatment and etherification working section, butene oxidative dehydrogenation working section and butadiene refining working section, wherein the coal-based mixing C4 pretreatment working section sequentially comprises the following steps: (1) removing a C5 component; (2) implementing hydroisomerization; and (3) condensing isobutene; and in the etherification step, isobutene obtained from the top of an isobutene condensation tower is pumped into an etherification tower together with ethanol for an etherification reaction. Furthermore, the invention discloses a combination device for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4. The method can be used for realizing the effective and comprehensive utilization of 1-butene, isobutene, 2-butene and 1,3-butadiene in the coal-based mixing C4 as well as few C5 component, so that the comprehensive utilization rate is improved, and the method is a new trend of comprehensive utilization of the coal-based mixing C4.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and specifically relates to a device and method for co-producing 1,3-butadiene and ethyl tert-butyl ether by using DMTO by-product coal-based mixed carbon dioxide as raw materials. Background technique [0002] In recent years, with the improvement of crude oil processing depth and the gradual increase of ethylene production capacity in my country, the by-product C4 will become more and more abundant. At present, the utilization rate of C4 in the chemical industry in my country is only about 16%, mainly converting isobutene into methyl tert-butyl ether (MTBE), and some 1-butene is used to prepare methyl ethyl ketone. It is used as fuel and liquefied gas, and the utilization rate of industrially developed countries such as the United States, Japan and Western Europe has reached 60%. In addition, with the rapid development of my country's tire industry, the consumption of butyl rubber i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/167C07C5/48C07C43/04C07C41/06
Inventor 周醒世黄炜王佳远汪一鸣徐晓龙
Owner EAST CHINA UNIV OF SCI & TECH
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