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Acrylamide crystal continuous concentration device and preparation method thereof

A technology of acrylamide crystal and concentration device, which is applied in sustainable manufacturing/processing, separation/purification of carboxylic acid amide, climate sustainability, etc., can solve the problems of large volume of concentration tower, long production cycle, energy-consuming waste water, etc., Achieve the effect of being beneficial to large-scale equipment, reducing comprehensive energy consumption, and improving product quality

Inactive Publication Date: 2013-09-04
NINGBO XIANAN CHEM
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Problems solved by technology

The production of existing acrylamide crystals must first complete the initial concentration in the concentration tower, so there are problems: first, the concentration tower needs to be continuously replenished with steam, which consumes high energy and costs a lot; second, the concentration tower is bulky and occupies a lot of space. Large space; thirdly, water resources cannot be recycled reasonably and effectively, and the waste is serious; finally, the process is complicated and the production cycle is long
There is also a patent document for the preparation of acrylamide crystals that uses a scraper evaporator to complete the preliminary concentration. See the Chinese invention patent application publication "Method for Producing Acrylamide Crystals" (publication number CN1844086A) with application number 200610043896.7. This application also exists , the shortcomings of energy-consuming wastewater, need to improve and develop new technical solutions

Method used

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  • Acrylamide crystal continuous concentration device and preparation method thereof

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] Such as figure 1 As shown, the acrylamide crystal continuous concentration device in this embodiment includes a feed tank 1, a film evaporator 2, a first condenser 3, a second condenser 4, a water ring vacuum pump 5, a first liquid storage tank 6 and The second liquid storage tank 7.

[0036] The feed tank 1 is connected to the feed port of the film evaporator 2 through the metering pump 8. The film evaporator 2 has a feed port 21, a hot water inlet 22, an air inlet 23, a gas phase outlet 24 and a liquid phase outlet 25, and the membrane evaporator The air inlet 23 of the evaporator is provided with an air filter 9; the first condenser 3 is connected with the liquid phase outlet 25 and the gas phase outlet 24 of the film evaporator, and has a gas phase outlet 31, a first chilled water inlet 32 ​​and a second A chilled water outlet 33;...

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Abstract

The invention discloses an acrylamide crystal continuous concentration device which is characterized by comprising a feed tank, a membrane type evaporator, a first condenser, a second condenser, a water ring vacuum pump, a first liquid storage tank and a second liquid storage tank, wherein the first liquid storage tank is connected with a liquid outlet of the first condenser; and the second liquid storage tank is connected with a liquid outlet of the second condenser. The invention also discloses a preparation method of an acrylamide crystal. Compared with the prior art, the device and method disclosed by the invention have the advantages of high efficiency, low energy consumption and stable operation.

Description

technical field [0001] The invention relates to a preparation device for acrylamide crystals, and also relates to a preparation method for acrylamide crystals. Background technique [0002] Acrylamide is an important organic chemical raw material with a wide range of uses. There are no less than a hundred kinds of products synthesized from it, and it is mainly used to produce polyacrylamide. As a flocculant, thickener, reinforcing agent, polyacrylamide is widely used in various fields such as petroleum exploration, paper industry, mineral processing, coal washing, metallurgy, water treatment, sugar production, building materials, fabric treatment and chemical industry. As the market potential of polyacrylamide in the above fields is becoming more and more prominent, especially the gradual rise of the environmental protection industry, there will be greater demand for polyacrylamide, and more acrylamide monomers will be required, so the acrylamide industry has There are broa...

Claims

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Application Information

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IPC IPC(8): C07C233/09C07C231/24
CPCY02P20/10
Inventor 李春友薛建萍时敏江刘占明迟默然孙维波袁华马文勇苏晓飞
Owner NINGBO XIANAN CHEM
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