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Ethyl tert-butyl ether etherification preparation process method

A technology of ethyl tertiary butyl ether and preparation process, which is applied in ether preparation, chemical instruments and methods, preparation of ether by addition of unsaturated compounds, etc. The problems of unsatisfactory product purity, conversion rate and selectivity of tertiary butyl ether can achieve the effect of improving conversion rate and selectivity, improving product purity and reducing ethanol content

Active Publication Date: 2018-06-29
丹东明珠特种树脂有限公司
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AI Technical Summary

Problems solved by technology

However, the production and preparation of ethyl tert-butyl ether still needs research and development support for technological innovation. Among them, the existing ethyl tert-butyl ether etherification preparation has technical problems such as large alcohol-ene ratio, unsatisfactory conversion rate and selectivity, which are aggravated. Reduce the material consumption and energy consumption of ethyl tert-butyl ether preparation, increase the ethanol content of carbon four after ether, increase the burden of subsequent treatment, and thus affect the product purity of ethyl tert-butyl ether

Method used

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  • Ethyl tert-butyl ether etherification preparation process method
  • Ethyl tert-butyl ether etherification preparation process method
  • Ethyl tert-butyl ether etherification preparation process method

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Embodiment Construction

[0021] The technical content of this patent application will be described in detail below through various embodiments, but the protection scope of this patent application is not limited to the content described in the embodiments. The catalyst used in the preparation process for the etherification of ethyl tert-butyl ether consists of p-tert-butylstyrene and divinylbenzene monomers, which are suspended and copolymerized under the action of porogens and surfactants to obtain copolymer white balls, which are then passed through pores Purified and sulfonated to obtain.

[0022] Catalyst C-1

[0023] In a stainless steel stirred tank equipped with a reflux condensing device, add 2000 g of water and a surfactant, heat with stirring, and completely dissolve to obtain a water phase. When the temperature of the stainless steel stirred tank is raised to 60 ° C, add an oil phase mixed with an organic phase, and then The temperature is 80°C, the stirring speed is 60r / min, the polymeriza...

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Abstract

The application provides an ethyl tert-butyl ether etherification preparation process method. The ethyl tert-butyl ether etherification preparation process method comprises a pre-reaction stage of a fixed bed reactor and a catalytic distillation column reaction stage thereafter. Mixed carbon four containing isobutylene and a fresh material of ethanol is pumped into the fixed bed reactor at a ratioof alcohol to olefin of (0.8 to 1.0), pre-reaction is conducted at a temperature of 40 to 60 DEG C, a material space velocity of 0.5 to 2. 0h<-1>, and the reaction pressure of 0.8 to 1.5 MPa, and a liquid phase product is sent to the catalytic distillation column reaction stage through a pipeline. The technical scheme effectively reduces the molar ratio of alcohol to olefin of the raw material, improves the conversion rate and selectivity of the etherification reaction, and greatly reduces the material consumption, energy consumption and purity of an ethyl tert-butyl ether product.

Description

technical field [0001] This patent application relates to the preparation process of high-octane gasoline blending components, especially to the preparation process of ethyl tert-butyl ether etherification. Background technique [0002] Environmental protection laws and regulations have proposed new application specifications for unleaded gasoline for vehicles. MTBE has been widely used as an excellent blending component for the production of unleaded, oxygenated and high-octane gasoline for many years. Since the United States found traces of MTBE in groundwater , MTBE environmental issues have attracted public attention, and the U.S. Environmental Protection Agency has made a ruling on MTBE's carcinogenicity. Ethyl tert-butyl ether has similar physical and chemical properties to MTBE, and it has excellent oil-adjusting performance. It is the general trend to replace MTBE with ethyl tert-butyl ether. However, the production and preparation of ethyl tert-butyl ether still ne...

Claims

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Application Information

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IPC IPC(8): C07C41/06C07C41/42C07C43/04B01J31/10
CPCC07C41/06C07C41/42B01J31/10B01J35/613B01J35/651B01J35/633B01J35/647C07C43/046Y02P20/10
Inventor 吕晓东刘成军温世昌王义成冷东斌管秀明何罡吴万春王英杰刘晓林
Owner 丹东明珠特种树脂有限公司
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