Waste water heat energy utilization method applicable to viscose staple fiber industry

A viscose staple fiber and waste water technology, which is applied in the direction of sustainable manufacturing/processing, complete sets of equipment for the production of artificial threads, textiles and papermaking, etc. It can solve problems such as short heat exchange process, underutilization of residual heat energy, and single layout

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

[0009] The purpose of the present invention is to provide a waste water thermal energy utilization method suitable for the viscose staple fiber industry. 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. and other defects, the full use of its heat...

Method used

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  • Waste water heat energy utilization method applicable to viscose staple fiber industry
  • Waste water heat energy utilization method applicable to viscose staple fiber industry
  • Waste water heat energy utilization method applicable to viscose staple fiber industry

Examples

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Embodiment 1

[0051] The invention relates to a waste water thermal energy utilization method suitable for the viscose staple fiber industry. The process includes the treatment process of heat exchange and reuse of waste water in the production of viscose staple fiber, wherein the waste heat water includes a plasticizing tank Overflow water, in the prior art, the waste heat of the plasticizing tank overflow water usually adopts such as Figure 5 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, the following heat exchange process is adopted in this embodiment, that is, cascade heat exchange is performed on the overflow water of the plasticizing tan...

Embodiment 2

[0053] 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, desulfurization liquid and holding water, and the processing steps as follows:

[0054] 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;

[0055] B: Send the desulfurization liquid used in the desulfurization station to the secondary heat exchanger, and use the overflow low-temperature water of the plasticizi...

Embodiment 3

[0059] 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.

[0060] The treatment steps of the plasticizing tank overflow water involved in this embodiment include:

[0061] (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;

[0062] (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 waste water heat energy utilization method applicable to the viscose staple fiber industry. The waste water heat energy utilization method applicable to the viscose staple fiber industry comprises processes of performing heat exchange and recycling on waste hot water during viscose staple fiber production, wherein the waste hot water comprises plasticizing tank overflow water; the processes comprise utilizing the plasticizing tank overflow water to perform step-by-step heat exchange sequentially on plasticizing tank make-up water, desulfurizing liquid and packaged cooling water, the packaged cooling water is conveyed to a cutting machine after heat exchange is performed, and then utilized by a refiner to obtain green cut water, and the green cut water returns to the cutting machine or is conveyed to a plasticizing tank water supplementing tank to serve as plasticizing tank supplement water. The waste water heat energy utilization method applicable to the viscose staple fiber industry achieves comprehensive recycling and utilization of various types of waste hot water and meanwhile achieves heat exchange treatment on specific mediums requiring heating during the viscose staple fiber production, thereby making full use of waste heat of the waste hot water, promoting energy conservation and consumption reduction for enterprises on the basis of existing process waste water treatment and under the premise of no flow losses, and obtaining high social benefits and economic benefits.

Description

technical field [0001] The invention relates to a waste water thermal energy utilization method suitable for the viscose staple fiber industry, specifically relates to a waste water comprehensive utilization process for the purpose of energy saving and consumption reduction in the viscose staple fiber production process, and belongs to the field of viscose staple fiber production. 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...

Claims

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Application Information

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IPC IPC(8): D01D13/02
CPCD01D13/02Y02P70/62
Inventor 贺敏张仁友刘小军汪学良竭发全
Owner YIBIN GRACE
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