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Combined heat exchange tube type waste heat grading recovery device

A waste heat recovery and recovery device technology, applied in heat exchangers, indirect heat exchangers, heat exchanger types, etc., can solve the problem of high exhaust gas temperature

Pending Publication Date: 2021-03-12
天津富兰克能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing waste heat recovery device has certain applicability for recovering medium and high temperature waste heat, but there is also a certain temperature window. After waste heat recovery, the temperature of the exhausted flue gas is still about 200°C, and the exhaust gas temperature is relatively high. There are still many shortcomings in terms of effect, device volume, cost, etc. Therefore, there is still room for improvement in the research on waste heat recovery devices

Method used

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  • Combined heat exchange tube type waste heat grading recovery device
  • Combined heat exchange tube type waste heat grading recovery device
  • Combined heat exchange tube type waste heat grading recovery device

Examples

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Effect test

Embodiment 1

[0017] Embodiment 1: as figure 1 , the present invention provides a combined heat exchange tube type waste heat classification recovery device, the device is composed of a first-level waste heat recovery area, a second-level waste heat recovery area, a shell (1), a transitional flue (11) and a connecting pipe (12) , the flue of the first-level waste heat recovery zone and the second-level waste heat recovery zone are connected by a transition flue (11), the cold flow of the first-level waste heat recovery zone and the second-level waste heat recovery zone is connected by a connecting pipe (12); the first-level waste heat recovery The area includes flue gas inlet (2), primary flue (3), common heat exchange tube (4) and cold flow outlet main pipe (5); the secondary waste heat recovery area includes flue gas outlet (6), secondary flue (7), heat pipe (8), preheating fluid tank (9) and cold flow inlet manifold (10); flue gas inlet (2), primary flue (3), transitional flue (11), seco...

Embodiment 2

[0023] Embodiment 2: as figure 2 , the combined heat exchange tube waste heat classification recovery device of this embodiment is the same as that of Embodiment 1, except that the heat pipes (8) of the present invention are arranged in an inclined manner. With this structure, the heat exchange performance and arrangement flexibility of the heat pipe (8) are further enhanced.

Embodiment 3

[0024] Embodiment 3: as image 3 , the combined heat exchange tube type waste heat classification recovery device of this embodiment is the same as that of Embodiment 1, the difference is that the common heat exchange tubes (4) of the present invention adopt row tubes.

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Abstract

The invention relates to a combined heat exchange tube type waste heat grading recovery device. The device consists of a first-stage waste heat recovery region, a second-stage waste heat recovery region, a shell, a transition flue and a communicating tube, wherein flues of the first-stage waste heat recovery region and the second-stage waste heat recovery region are connected through the transition flue, cold flow of the first-stage waste heat recovery area and cold flow of the second-stage waste heat recovery area are connected through the communicating pipe, the first-stage waste heat recovery area comprises a flue gas inlet, a first-stage flue, a common heat exchange pipe and a cold flow outlet header pipe, the second-stage waste heat recovery area comprises a flue gas outlet, a second-stage flue, a heat pipe, a preheating fluid box and a cold flow inlet header pipe, a condensation section of the heat pipe is arranged in the preheating fluid box, and an evaporation section of the heat pipe is arranged in the second-stage flue. According to the device, flue gas waste heat is recycled in a graded mode through the combined heat exchange pipes, the exhaust gas temperature can be effectively reduced, the heat exchange working condition is matched, the applicable temperature range is wide, and the structure is compact.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a combined heat exchange tube type waste heat classification recovery device used in thermoelectricity, petroleum, metallurgy and other fields, belonging to the field of energy saving and environmental protection. Background technique [0002] In the industrial energy-consuming devices that have been put into operation, there are a large amount of sensible heat and latent heat that have not been rationally utilized in the original design. According to statistics, the total waste heat resources of different industries account for 17% to 67% of their total fuel consumption. Recyclable waste heat resources are about 60% of the total waste heat resources, and the waste heat recovery potential is huge. Recycling waste heat resources to meet the needs of production and life, and realizing the resource utilization of waste heat are of great significance to saving energy and reducing therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/06F28D21/00
CPCF23J15/06F28D21/0014Y02E20/30
Inventor 张绮妍
Owner 天津富兰克能源科技有限公司