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Recovery process and device for dehydrating agent for waste acetone generated in alginate fiber filament production

A seaweed fiber, recycling device technology, applied in the chemical industry, preparation of organic compounds, sustainable manufacturing/processing, etc., can solve the problems of high energy consumption and high equipment height, achieve low energy consumption, small footprint, energy consumption reduction effect

Active Publication Date: 2014-10-29
JIANGSU NINE HEAVEN HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rectification method has high energy consumption and high equipment height, so it is not suitable for this type of production process.

Method used

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  • Recovery process and device for dehydrating agent for waste acetone generated in alginate fiber filament production
  • Recovery process and device for dehydrating agent for waste acetone generated in alginate fiber filament production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Flowchart of waste acetone dehydrating agent recovery process for medical seaweed fiber bandage production, such as figure 1 As shown, the process comprises the following steps: acetone is fed into the seaweed fiber silk dehydration tank 1 by the fresh acetone storage tank 16 to carry out the dehydration operation of the seaweed fiber, and then the waste acetone from the seaweed fiber silk dehydration tank 1 is sent into the waste acetone mother liquor The tank 3 is then fed into the front-stage evaporator 4 through the feed pump for heating and distillation. The temperature is controlled at 60°C, 70°C, 80°C, 90°C, and 100°C respectively. After the evaporated mother liquor is cooled by the condenser 5, It is mixed with the overhead distillate of the rectification tower 13 and stored in the acetone mother liquor tank 6. The controlled flow rate is 300kg / h and transported into the preheater 7 and the post-stage evaporator 8 for heating. The temperature at the top of the e...

Embodiment 2

[0041] Flowchart of waste acetone dehydrating agent recovery process for medical seaweed fiber bandage production, such as figure 1 As shown, the process includes the following steps: the waste acetone mother liquor from the seaweed fiber silk dehydration tank 1 is input into the front-stage evaporator 4 through the feed pump, and heated and distilled, the temperature is controlled at 80 ° C, and the evaporated mother liquor is passed through After the condenser 5 is cooled, it is mixed with the distillate at the top of the rectification tower 13 and stored in the acetone mother liquor tank 6. The controlled flow rate is 500kg / h and transported into the preheater 7 and the post-stage evaporator 8 for heating. The temperature at the top of the evaporator is controlled at 70°C. The acetone vapor with a water content of 7wt.% from the top of the evaporator enters the pervaporation membrane separator 9 for separation. The separation unit is a membrane separator composed of 8 set...

Embodiment 3

[0044] Flowchart of waste acetone dehydrating agent recovery process for medical seaweed fiber bandage production, such as figure 1 As shown, the process comprises the following steps: the waste acetone mother liquor from the seaweed fiber silk dehydration tank 1 is input into the waste acetone mother liquor tank 3 through the feed pump, and then the feed pump is used to enter the front-stage evaporator 4 for heating and distillation. Respectively controlled at 80°C, the evaporated mother liquor is cooled by the condenser 5, mixed with the overhead distillate of the rectification tower 13 and stored in the acetone mother liquor tank 6, and the flow rate is controlled to be 500kg / h to be transported into the preheater 7 and the rear Heating in the stage evaporator 8, the top temperature of the evaporator is controlled at 105°C. The acetone vapor with a water mass percentage of 8wt.% coming out from the top of the evaporator enters the pervaporation membrane separator 9 for sep...

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Abstract

The invention relates to a recovery process and device for a dehydrating agent for waste acetone generated in alginate fiber filament production. The recovery process comprises the following steps of heating to distill a waste acetone mother solution from an alginate fiber filament dehydration tank to remove other organic components and impurities in waste acetone, and returning permeate to the alginate fiber filament dehydration step after separating heavy components through a ceramic membrane, wherein the heavy components are generated by heating distillation; inputting distillate to a preheater and an evaporator through a pump, enabling the distillate to enter a membrane separation unit in a steam way, obtaining an acetone product meeting a treatment requirement at an entrapment side of a pervaporation membrane separation unit, and enabling refined acetone obtained after dehydration to enter the alginate fiber filament dehydration tank to reused as a dehydrant; connecting the permeation side of the pervaporation membrane separation unit with a vacuum system, treating penetrated steam in a rectifying tower after condensing the penetrated steam by a penetrating fluid condenser, obtaining acetone with low water content at the top of the tower, enabling acetone to enter an acetone mother solution tank, and discharging wastewater from the bottom of a kettle. The recovery process disclosed by the invention is simple in course, high in safety factor, low in equipment investment, high in energy utilization ratio, small in floor area of the whole set of process and small in equipment height.

Description

[0001] technical field [0002] The invention relates to a recovery process and device for producing waste acetone dehydrating agent from seaweed fiber silk, belonging to the application field of pervaporation membranes. [0003] Background technique [0004] Acetone is a colorless, volatile, flammable liquid with a slight aroma. Soluble in water, ethanol, ether and other organic solvents. Acetone is an important raw material for organic synthesis, used in the production of epoxy resin, polycarbonate, plexiglass, medicine, pesticide, etc. It is also a good solvent, used in coatings, adhesives, acetylene in steel cylinders, etc. Also used as diluent, cleaning agent, extractant. It is also an important raw material for the manufacture of acetic anhydride, diacetone alcohol, chloroform, iodoform, epoxy resin, polyisoprene rubber, methyl methacrylate, etc. It is used as a solvent in industries such as smokeless powder, celluloid, cellulose acetate, and spray paint. It is u...

Claims

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Application Information

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IPC IPC(8): C07C49/08C07C45/78B01J19/00
CPCC07C45/786C07C49/08Y02P20/10Y02P20/50
Inventor 余从立杨龙顾学红庆祖森
Owner JIANGSU NINE HEAVEN HIGH TECH
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