Steam removal line for diketene production

A diketene and production line technology, applied in the field of acetic acid impurity removal evaporation equipment and diketene production line, can solve problems such as furnace tube scaling, equipment damage, and adverse effects of cracking reactions
CN108744561BActive Publication Date: 2021-03-26QINGDAO DOUBLE PEACH SPECIALTY CHEM GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO DOUBLE PEACH SPECIALTY CHEM GRP
Publication Date
2021-03-26

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Abstract

The invention discloses a steam purification production line in the production of diketene. The production line comprises: an acetic acid purification evaporation device for converting a raw materialacetic acid into acetic acid vapor, and a purification device for removing impurities produced / carried in the acetic acid vapor production and acetic acid vapor transportation. The purification devicecomprises a primary purification device and a secondary purification device. The primary purification device is arranged in the acetic acid purification evaporation device. The secondary purificationdevice is arranged outside the acetic acid purification evaporation device and is connected to the acetic acid purification evaporation device. The interior of the acetic acid purification evaporation device and the interior of the secondary purification device form a channel for flowing acetic acid vapor. The vapor purification production line in the diketene production can timely and effectively remove various impurities in acetic acid gas before entering the cracking equipment in stages according to types and facilitate impurity recovery in the later stage.
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Description

technical field

[0001] The invention belongs to the field of diketene production equipment, and in particular relates to an acetic acid impurity-removing evaporation equipment and a diketene production line in the production of diketene. Background technique

[0002] Diketene, also known as acetylketene, is an important fine chemical intermediate. Because its molecular structure contains two double bonds, its chemical properties are very active, and its application fields continue to expand. Diketene and its intermediate product ketene can be used to synthesize a variety of important fine chemicals such as dyes, medicines, pesticides and sweeteners such as A-K sugars. In recent years, due to the continuous increase in the development of downstream products and the continuous increase in consumption, the market situation of diketene is in good shape, and the price keeps rising. The new and expanded facilities of diketene in China are developing rapidly. It is an inevitable r...

Claims

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