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Thermal energy comprehensive recycling method applied to viscose staple fibre waste water

A technology of viscose staple fiber and thermal energy, which is applied in the thermal energy recovery and utilization of waste water in the production of viscose staple fiber, and in the field of comprehensive thermal energy recycling. Good social benefits and economic value, prevent the reduction of heat exchange effect, simple structure effect

Inactive Publication Date: 2015-01-07
YIBIN GRACE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a thermal energy comprehensive recycling method suitable for viscose staple fiber wastewater. This method overcomes the short heat exchange process, single layout, and insufficient use of residual heat in the existing short fiber production waste heat heat exchange process. Defects, the full utilization of its heat energy can be realized through the step-by-step heat exchange of specific media, which can be carried out on the basis of the existing process wastewater treatment without flow loss, so as to promote the energy saving and consumption reduction work of enterprises, and the actual use effect is good

Method used

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  • Thermal energy comprehensive recycling method applied to viscose staple fibre waste water
  • Thermal energy comprehensive recycling method applied to viscose staple fibre waste water
  • Thermal energy comprehensive recycling method applied to viscose staple fibre waste water

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Embodiment 1

[0041] The present invention relates to a heat energy comprehensive recycling method suitable for viscose staple fiber waste water. The method is a heat exchange treatment of waste water in the production of viscose staple fiber. In the existing technology, the waste heat of the overflow water of the plasticizing tank is usually adopted such as figure 1 The heat exchange process shown is for processing. The temperature of the plasticizing tank overflow water from the plasticizing tank is 90-95°C. After simple heat exchange, the overflow water of the plasticizing tank still has residual heat, and the temperature is 70-80°C. , that is, it is discharged to the sewage station for treatment, and its heat energy has not been fully utilized. Therefore, this embodiment adopts the following heat transfer process, that is, the overflow water of the plasticizing tank is subjected to step-by-step heat transfer, and the step-by-step heat transfer method is adopted. The heating medium in th...

Embodiment 2

[0043] The difference between this embodiment and Embodiment 1 is that in this embodiment, the step-by-step heat exchange of the plasticizing tank overflow water includes the step-by-step heat exchange of the plasticizing tank replenishment water, sodium sulfide bath liquid and holding water, which The processing steps are as follows:

[0044] A: Set up a primary heat exchanger, respectively send the overflow water of the plasticizing tank and the supplementary water of the plasticizing tank to the primary heat exchanger for heat exchange treatment. After the heat exchange treatment, the obtained plasticizing tank supplementary hot water is sent to The plasticizing tank, the overflow low-temperature water obtained from the plasticizing tank is sent to the secondary heat exchanger to complete the operation of step B;

[0045] B: Send the sodium sulfide bath liquid from the desulfurization station to the secondary heat exchanger, and use the overflow low-temperature water from t...

Embodiment 3

[0048] The difference between this embodiment and Embodiment 1 is that in this embodiment, the step-by-step heat exchange of the plasticizing tank overflow water includes the step-by-step heat exchange of the plasticizing tank replenishment water, sodium sulfide bath liquid and holding water, and at the same time , There is a collection tank connected to the plasticizing tank, and its interior is separated into two partitions by an overflow plate, which are high temperature zone and low temperature zone.

[0049] The treatment steps of the plasticizing tank overflow water involved in this embodiment include:

[0050] (1) The plasticizing tank overflow water in the plasticizing tank overflows to the high temperature zone of the collection tank, and the temperature of the plasticizing tank overflow water is 95°C;

[0051] (2) The overflow water of the plasticizing tank with a temperature of 95°C in the high temperature zone and the replenishment water of the plasticizing tank wi...

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Abstract

The invention discloses a thermal energy comprehensive recycling method applied to viscose staple fibre waste water, the thermal energy comprehensive recycling method does heat exchange treatment on the waste hot water in the viscose staple fibre production, the waste hot water comprises the plasticizing tank overflow water, the heat exchange treatment is as follows: gradually exchanging the heat for the plasticizing tank overflow water to obtain the acidity overflow water and transporting the acidity overflow water to the waste water station. The thermal energy comprehensive recycling method adopts different recycling processes according to the waste hot water in the viscose staple fibre production based on different thermal energy content and use (as plasticizing tank condensate water, refine sewerage, refine overflow hot water, drying condensate water and pre-cooling water ), the heat exchange treatment by heating medium for viscose staple fibre production can be realized, the remaining heat of the waste hot water can be used sufficiently, the energy-saving and consumption-reducing work for enterprise can be promoted based on the existing technology waste water process under the premise without flow loss, and the thermal energy comprehensive recycling method has good social benefit and economic benefit.

Description

technical field [0001] The invention is a thermal energy comprehensive recycling method suitable for viscose staple fiber wastewater, specifically relates to thermal energy recycling of wastewater in viscose staple fiber production, and belongs to the field of energy saving and consumption reduction in the viscose staple fiber production field. Background technique [0002] "Energy consumption" is an important index to evaluate the comprehensive competitiveness of an enterprise in today's era. Every enterprise regards "energy saving and consumption reduction" as the foundation of its own survival, and reduces costs bit by bit, and realizes energy saving with the best management and technology. benefit maximization. Taking the production of viscose staple fiber as an example, a large amount of waste hot water will be discharged during the production process. If it is directly discharged or simply exchanged for heat recovery, a large amount of heat energy will be lost, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J3/00
CPCY02P80/10
Inventor 贺敏张仁友刘小军邓传东竭发全
Owner YIBIN GRACE
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