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A low-grade waste heat recovery system for copper plants used in urban central heating

A waste heat recovery system and central heating technology, which is applied in hot water central heating systems, heating systems, household heating, etc., can solve the problems of cooling water consumption and power consumption, and achieve saving production water and reducing fan power consumption , The effect of high recovery rate of waste heat

Active Publication Date: 2016-09-21
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these low-grade waste heat is lost in the cooling tower through the evaporation of cooling water, which not only consumes electricity to drive the cooling tower fan, but also consumes a lot of cooling water in vain

Method used

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  • A low-grade waste heat recovery system for copper plants used in urban central heating
  • A low-grade waste heat recovery system for copper plants used in urban central heating
  • A low-grade waste heat recovery system for copper plants used in urban central heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 As shown, when the return water temperature of the primary network is low, that is, below 30°C, the principle of "cascaded heating" is implemented. First, the return water entering the copper plant is divided into the first to third shares of primary network return water in parallel, and the three shares The primary network return water flows into the Ao furnace wall waste heat recovery device 21, the converter body waste heat recovery device 22 and the drying tower waste heat recovery device 23; secondly, the three primary network return water are respectively connected with the Ao furnace wall, the converter body and the drying Three heat sources that generate lower-grade waste heat in the tower are used for heat exchange; again, the three strands of primary network water absorb the lower-grade waste heat and then merge into one stream to flow into the absorption tower waste heat recovery device 24 and the slag pool waste heat recovery device ...

Embodiment 2

[0034] Example 2: When the return water temperature of the primary network is relatively high, that is, above 30°C, especially around 45°C, if figure 2 As shown, the principle of "step heating" is implemented. Firstly, the return water from the primary network entering the copper plant flows into the waste heat recovery device 24 of the absorption tower. The return water flows into the waste heat recovery device 21 of the furnace wall of the Austrian furnace, the waste heat recovery device 22 of the converter body and the waste heat recovery device 23 of the drying tower respectively, and absorbs the low-grade waste heat generated by the furnace wall 218 of the Austrian furnace, the furnace body of the converter and the drying tower 232 respectively and heat up; again, absorb the lower-grade waste heat and heat up the three primary network water into one stream into the slag pool waste heat recovery device 25, and absorb the higher-grade waste heat produced by the slag pool w...

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Abstract

The invention relates to a copper plant low-grade waste heat recovery system for urban central heating. The copper plant low-grade waste heat recovery system is characterized by comprising a primary network circulating pump and a copper plant waste heat recovery device, wherein primary network return water from a primary pipe network flows into the copper plant waste heat recovery device through the primary network circulating pump, the copper plant waste heat recovery device collects waste heat in a copper plant, the waste heat is used for heating the primary network return water, and after the temperature rises, the primary network return water is supplied to a user in the form of primary network water supply; the copper plant waste heat recovery device comprises an austenitic furnace wall waste heat recovery device, a converter body waste heat recovery device, a drying tower waste heat recovery device, an absorption tower waste heat recovery device, a slag pool waste heat recovery device and a copper plant steam waste heat recovery device, wherein the austenitic furnace wall waste heat recovery device, the converter body waste heat recovery device and the drying tower waste heat recovery device are arranged in parallel, and the absorption tower waste heat recovery device, the slag pool waste heat recovery device and the copper plant steam waste heat recovery device are connected in series with the three waste heat recovery devices which are connected in parallel. The copper plant low-grade waste heat recovery system can be widely applied to recovery of low-grade waste heat in the copper plant.

Description

technical field [0001] The invention relates to a waste heat recovery system, in particular to a low-grade waste heat recovery system of a copper factory used for urban central heating. Background technique [0002] With the rapid advancement of China's urbanization process, the scale of urban central heating continues to expand, resulting in insufficient heat source capacity for central heating. New regional boiler houses require high investment, long construction period, and are restricted by environmental capacity; considering the need for air pollution control, small gas-fired boiler houses can only be developed according to local conditions; combined with the current status of gas and electricity production and supply, most Central heating by means of gas or electricity is also not suitable for most cities. The shortage of heating sources has become the most urgent problem to be solved in the central heating of cities in northern China. [0003] As a mature copper sme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D3/18F27D17/00
CPCY02B30/12Y02P10/25Y02P80/15
Inventor 夏建军方豪宿颖波于峰江亿
Owner TSINGHUA UNIV
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