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A cs2 recycling system for viscose staple fiber production

A recycling system and viscose staple fiber technology, applied in the field of spinning, can solve the problems of consuming a lot of cold water or chilled water, equipment investment and occupying a large area, and cannot be recycled, so as to improve recovery rate, large investment and reduce load Effect

Inactive Publication Date: 2016-05-25
YIBIN GRACE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patent directly sprays the exhaust gas with alkali, but this way recovers CS 2 The flaw that exists is that CS 2 The recovery rate is low, generally only about 40%; the steam heat and water vapor steamed from the plasticizing tank cannot be recycled; condensed CS 2 And water vapor needs to consume a lot of cold water or frozen water; equipment investment and land occupation are large, and maintenance is frequent

Method used

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  • A cs2 recycling system for viscose staple fiber production
  • A cs2 recycling system for viscose staple fiber production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of CS produced by viscose staple fiber 2 Recovery system, including plasticizing tank 1, pre-condenser 2, atomizing condenser 3, CS 2 Recovery tank 4 and sewage overflow tank 5, the plasticizing tank 1 is connected to the pre-condenser 2 through the air duct 6, the pre-condenser 2 is connected to the atomizing condenser 3, and the CS 2 The recovery tank 4 is connected to the atomizing condenser 3, and the sewage overflow tank 5 is connected to the sewage outlet port 7 of the CS2 recovery tank 4, and the sewage overflow tank 5 can realize the CS 2 Secondary precipitation of liquid and prevention of CS 2 The effect of loss.

[0028] An overflow tank 8 is connected to the bottom of the pre-condenser 2 . The overflow tank 8 communicates with the plasticizing tank 1 . The water inlet of the pre-condenser 2 is connected with a soft water pipeline 9 , and the water outlet of the pre-condenser 2 is connected with a refining water washing pipeline 10 . A high-pressur...

Embodiment 2

[0033] A kind of CS produced by viscose staple fiber 2Recovery system, including plasticizing tank 1, pre-condenser 2, atomizing condenser 3, CS 2 Recovery tank 4 and sewage overflow tank 5, the plasticizing tank 1 is connected to the pre-condenser 2 through the air duct 6, the pre-condenser 2 is connected to the atomizing condenser 3, and the CS 2 The recovery tank 4 is connected to the atomizing condenser 3, and the sewage overflow tank 5 is connected to the sewage outlet port 7 of the CS2 recovery tank 4, and the sewage overflow tank 5 can realize the CS 2 Secondary precipitation of liquid and prevention of CS 2 The effect of loss.

[0034] An overflow tank 8 is connected to the bottom of the pre-condenser 2 . The overflow tank 8 communicates with the plasticizing tank 1 . The water inlet of the pre-condenser 2 is connected with a soft water pipeline 9 , and the water outlet of the pre-condenser 2 is connected with a refining water washing pipeline 10 . A high-pressure...

Embodiment 3

[0043] A kind of CS produced by viscose staple fiber 2 Recovery system, in the production process of staple fiber tow, when the tow passes through the plasticizing tank 1, the mixed steam generated by the plasticizing tank 1 passes through the air duct 6, and after the pre-cooling step, the water in the mixed steam is condensed and separated; CS on steam 2 The gas enters the atomizing condenser 3, and in the atomizing condenser 3, the pressurized water is sprayed out through the atomizing nozzle to realize spray condensation, thereby realizing the effect of heat absorption. When the temperature in the atomizing condenser 3 drops to CS 2 At the condensation point of the gas, CS 2 Gas condenses into CS 2 Liquid recovery.

[0044] The present invention overcomes traditional CS 2 In the recovery process, the recovery rate is low, the heat energy cannot be recovered, the operating cost is high, and the equipment needs to be cleaned and maintained regularly. This application wi...

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Abstract

The invention relates to the technical field of spinning and in particular relates to a CS2 recovery system for viscose staple fiber production. According to a CS2 recovery method, mixed steam generated in a plasticizing tank passes through a gas guide pipe, and water in the mixed steam is condensed and separated through the pre-cooling step; CS2 gas in the mixed steam enters an atomizing condenser, pressurized water is sprayed out through an atomizing spray head in the atomizing condenser for spray condensation to achieve a heat absorption effect, and when the temperature in the atomizing condenser is reduced to be the condensation point of the CS2 gas, the CS2 gas is condensed into CS2 liquid for recovery; the condensation temperature of the CS2 gas is reduced to the condensation point; the CS2 gas is condensed through atomized water to form atomized water condensation nucleuses. According to the method, the CS2 condensation speed can be increased, so that the CS2 gas is quickly condensed and recovered, the exhaust loss is reduced, and the CS2 recovery rate is increased.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a CS produced by viscose staple fiber 2 recycling system. Background technique [0002] CS during staple fiber production 2 The size of the recovery rate is directly related to the value increase and consumption reduction of the enterprise and the reduction of CS 2 Emissions reduce environmental pollution and improve the industry competitiveness of enterprises. CS of existing viscose staple fiber 2 The equipment included in the recovery system includes: plasticizing tank, condenser, cooling tower system, and CS2 recovery tank; the main process is as follows: CS2 gas evaporated from the plasticizing tank enters the condenser through a large conduit, and is cooled by two stages of the condenser. The condensed water and CS2 (liquid) flow to the CS2 recovery tank by itself, and the water overflows away, and the separated CS2 is stored in the recovery tank, and when it reaches a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00B01D5/00
Inventor 张仁友贺敏刘小军汪学良蒋运乔
Owner YIBIN GRACE