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Heat reclamation method for wastewater of dyeing and printing industry

A technology for heat recovery and waste water, applied in separation methods, chemical instruments and methods, filtration circuits, etc., can solve problems such as difficult removal, easy fouling, troubles, etc., and achieve the effect of fast cost recovery and simple operation

Inactive Publication Date: 2010-06-23
TONGXIANG XPS THERMAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method only achieves one-time filtration, it is convenient for a large amount of fibrous matter and other suspended matter to pass through the primary filter equipment to the heat exchanger, so that the pipeline through which the heat exchanger waste water flows is prone to fouling after a period of time, reducing the thermal efficiency of heat exchange and cleaning The scale on the inner wall of the heat exchanger is very troublesome and difficult to remove, so this problem needs to be solved urgently

Method used

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  • Heat reclamation method for wastewater of dyeing and printing industry
  • Heat reclamation method for wastewater of dyeing and printing industry
  • Heat reclamation method for wastewater of dyeing and printing industry

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] The process was tested in a printing and dyeing factory, in figure 1 , figure 2 The waste heat sewage from the printing and dyeing factory in China Printing and Dyeing Factory passes through the primary filter 1, and the waste hot water passes through the secondary filter device 2, flat plate heat exchanger 3, and the exchanged cold water becomes hot water to the heat preservation hot water tank 4 for standby, in the heat preservation water tank The hot water becomes waste hot water after use, and the water in the heat preservation water tank is transported to the printing and dyeing factory for printing and dyeing 14, and the waste water exchanged by the plate heat exchanger 3 is treated in the sewage processor 5 and then discharged; the secondary filter device 2 includes a closed hollow cylinder 6, a reducer 7, a motor 8, a filter cleaning brush 9, and a filter 10. The cylinder 6 has a water inlet 11 and a water outlet 12; the motor 8 and the reducer 7 The reducer 7...

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PUM

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Abstract

The invention discloses a method for recovering and utilizing heat, and particularly relates to a method of recovering and utilizing the heat of waste water in the printing industry; the invention aims to provide a method of recovering and utilizing the heat of the waste water and a secondary filtering device used in the treatment of the waste water in the printing industry, wherein the method includes making full use of the residual heat in the waste water, and has no need for frequently cleaning the heat exchange equipment with the heat utilization ratio reaching 90%; after the single stagefilter, the waste hot water passes through the secondary filtering device and a flat-plate type heat exchanger: the filtered hot water is reserved in an insulating hot water tank and the exchanged waste water is disposed. The method is characterized by easy operation, quick investment recovery and so on.

Description

technical field [0001] The invention relates to a method for heat recovery and utilization, in particular to a method for heat recovery and utilization of waste water in the printing and dyeing industry. Background technique [0002] Energy saving is the biggest issue in today's society, it is the requirement of implementing the scientific outlook on development, it is also the task of building a resource-saving and environment-friendly society, and it is a subject related to the overall sustainable development of the economy and society. Whether it is the Seventeenth National Congress of the Communist Party of China or the recently held National People's Congress, energy conservation has been put on the agenda, and the goals and tasks and overall requirements for energy conservation and emission reduction have been further clarified. (1) Main objectives. By 2010, energy consumption per 10,000 yuan of GDP will drop from 1.22 tons of standard coal in 2005 to below 1Dtun of st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D29/64B01D36/02B01D29/66B01D29/31F28D9/00
Inventor 钟心强何建明
Owner TONGXIANG XPS THERMAL EQUIP
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