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Acetic acid removal and evaporation equipment in the production of diketene

A technology of diketene and evaporation equipment, which is applied in the direction of evaporation, evaporator accessories, separation/purification of carboxylic acid compounds, etc. It can solve the problems of furnace tube scaling, equipment damage, and adverse effects of cracking reactions, etc., to ensure the efficiency of impurity removal, reduce the effectiveness of management

Active Publication Date: 2021-04-30
QINGDAO DOUBLE PEACH SPECIALTY CHEM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, acetic acid will enrich solid impurities and soluble impurities in the process of repeated mechanical application, and will enter the cracking furnace tube during the evaporation process, resulting in fouling of the furnace tube and damage to the equipment
Moreover, acetic acid vapor will inevitably entrain a certain amount of liquid phase after flowing out from the gasification equipment, which will cause adverse effects on the cracking reaction

Method used

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  • Acetic acid removal and evaporation equipment in the production of diketene
  • Acetic acid removal and evaporation equipment in the production of diketene
  • Acetic acid removal and evaporation equipment in the production of diketene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] Such as figure 1 , figure 2 As shown, in the acetic acid impurity removal and evaporation equipment described in this embodiment, the body 1 includes a first body 11 and a second body 12 connected inside, and the primary impurity removal device is arranged inside the second body 12 . The second body 12 is disposed above the first body 11 .

[0127] Furthermore, in the acetic acid impurity removal and evaporation equipment in this embodiment, the feeding device 3 is arranged on the first body 11 . The feeding device 3 is arranged at one end of the first body 11 .

[0128] Furthermore, in the acetic acid impurity removal and evaporation equipment in this embodiment, the discharge device 4 is arranged on the second body 12 . The discharge device 4 is disposed at the end of the second body 12 opposite to the connection position of the first body 11 .

[0129] Furthermore, in the acetic acid impurity removal and evaporation equipment in this embodiment, its primary impu...

Embodiment 2

[0132] Such as figure 1 , figure 2As shown, the difference between the impurity removal and evaporation equipment for acetic acid described in this embodiment and the above embodiments is that the primary impurity removal device includes a first impurity removal device 21 and a second impurity removal device 22 at different locations. The first impurity removal device 21 is used to remove the raw material acetic acid and / or the solid impurities generated when the acetic acid is vaporized, and the second impurity removal device 22 is used to remove the raw material acetic acid and / or the liquid and / or foamy impurities generated when the acetic acid is vaporized.

[0133] Further, the distance between the second impurity removal device 22 and the discharge device 4 is smaller than the distance between the first impurity removal device 22 and the discharge device 4 .

[0134] Through the acetic acid impurity removal and evaporation equipment in the production of diketene introd...

Embodiment 3

[0137] Such as figure 1 , figure 2 As shown, the difference between the acetic acid impurity removal and evaporation equipment described in this embodiment and the above-mentioned embodiments is that: the acetic acid impurity removal and evaporation equipment, its first impurity removal device 21 includes a support part 211 and a first removal device arranged on the support part 211 The miscellaneous function part 212, the support part 211 is connected with the main body 1, and the first miscellaneous function part is arranged above the support part. The first impurity removal function part includes an impurity removal filler, and the impurity removal filler is an acid-resistant material. Preferably, the impurity removal filler is made of S31603 stainless steel. More preferably, the size of the impurity removal filler is Ф40mm. The filling method of the impurity-removing filler is random pile.

[0138] Further, the second impurity removal device 22 of the acetic acid impuri...

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Abstract

The invention discloses an acetic acid impurity-removing and evaporating device in the production of diketene. The device comprises: a body, the body is in the shape of a container, and is used to provide accommodating space for raw material acetic acid and a conversion space for gasification of raw material acetic acid A first-level impurity removal device, the first-level impurity removal device is arranged inside the body for removing impurities carried in the acetic acid raw material and impurities generated when acetic acid is vaporized; a feeding device is arranged on the body, The raw material acetic acid is introduced into the body; the discharge device is arranged on the body and is used to export the vaporized acetic acid out of the body. The acetic acid impurity-removing evaporation equipment introduced in the present invention can effectively remove various impurities in the acetic acid gas before it enters the cracking equipment, and remove various impurities separately and in stages, so as to facilitate the recovery of impurities in the later stage.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D1/00B01D1/30C07C51/43C07C53/08C07D305/12
CPCB01D1/00B01D1/30C07C51/43C07D305/12C07C53/08
Inventor 逄环民韩娟李德华田智英张江涛
Owner QINGDAO DOUBLE PEACH SPECIALTY CHEM GRP
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