A mtbe production device and method for reducing corrosion of water washing and recovery systems

A production method and recovery system technology, applied in the direction of preparation of ether by addition of unsaturated compounds, separation/purification of ether, preparation of ether, etc., achieving low cost, solving corrosion problems, and wide application range

Active Publication Date: 2017-08-29
SINOPEC ENG GRP CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is only considered from the perspective of deacidification to improve the pH value of methanol extraction circulating water, and cannot fundamentally solve the corrosion problem of methanol recovery system

Method used

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  • A mtbe production device and method for reducing corrosion of water washing and recovery systems

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Embodiment 1

[0048] A kind of MTBE production device that alleviates water washing and recovery system corrosion, comprises methanol extraction tower, zeolite filter, macroporous adsorption-strong alkali mixed type anion exchange resin (commercially available macroporous strongly basic styrene anion exchange resin D201) made exchanger and methanol recovery tower; methanol extraction tower is connected with upstream equipment.

Embodiment 2

[0050] A kind of MTBE production device that alleviates water washing and recovery system corrosion, comprises the methanol extraction column that connects successively, active carbon filter, macroporous adsorption-strong base mixed type anion exchange resin (commercially available macroporous strongly basic styrene series anion exchange resin D201) made exchanger and methanol recovery tower; methanol extraction tower is connected with upstream equipment.

Embodiment 3

[0052] A kind of MTBE production device that alleviates the corrosion of water washing and recovery system, including the methanol extraction tower connected in sequence, the filter that activated carbon and zeolite are mixed in equal proportion (weight), macroporous adsorption-strong base mixed type anion exchange resin (market Sell ​​macroporous strong basic styrene-based anion exchange resin D201) made of exchanger and methanol recovery tower; methanol extraction tower is connected with upstream equipment.

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Abstract

The invention provides a MTBE (methyl tert-butyl ether) production device and method for alleviating corrosion of a washing and recovering system , The production device comprises a methanol extraction tower, a first filter, a second filter and a methanol recovery tower which are sequentially connected; a filter medium of the first filter is zeolite and / or activated carbon, and the second filter is a strong base anion exchanger. The production method comprises: discharging extraction water from the methanol extraction tower; removing impurities in the extraction water by taking zeolite and / or activated carbon as the filter medium to obtain a primarily treated extraction water; passing the primarily treated extraction water through the strong base anion exchanger to obtain secondarily treated extraction water; and feeding the secondarily treated extraction water into the methanol recovery tower for subsequent recovery and production. According to the system and method, not only are acid ions in the extraction tower directly removed and is H+ neutralized, but also impurities such as sulfide, metal salt and the like which lead to increase of H+ are further removed. By adopting two means of prevention and removal, the corrosion problem of the extraction tower is fundamentally solved.

Description

technical field [0001] The invention relates to the field of MTBE production, in particular to an MTBE production method and device for reducing corrosion in water washing and recovery systems. Background technique [0002] As domestic gasoline demand and gasoline quality requirements are increasing year by year, the production of unleaded, oxygen-containing, high-octane, low-aromatic, and low-olefin gasoline is an urgent need for environmental protection. Methyl tert-butyl ether (MTBE) has excellent anti-knock properties, and its research octane number is 117. As a high-quality blending component of gasoline, it is becoming more and more popular, and its demand is also increasing. At the same time, the production of MTBE can effectively utilize cracking carbon four components or catalytic cracking carbon four, and can produce high-purity MTBE and 1- Butene products, therefore, the production of MTBE plant is getting more and more attention. [0003] The most common proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C41/06C07C41/34C07C43/04
CPCC07C41/06C07C41/34C07C43/04
Inventor 于凤昌王宁段永锋崔新安苗普赵小燕
Owner SINOPEC ENG GRP CO LTD
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