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Boiler flue gas surplus heat reclaimer

A waste heat recovery and boiler flue gas technology, applied in feed water heaters, fluid heaters, preheating, etc., can solve the problems of low heat recovery efficiency, short heat exchange time, and limited heat absorption effect, and achieve heat exchange The effect of prolonged time, decreased moisture content of flue gas, and long movement path

Active Publication Date: 2017-09-12
江西南方锅炉股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These prior art all are to adopt one deck serpentine tube as cooling or heat-absorbing equipment, and heat-absorbing effect is limited, and the speed that fluid flows through serpentine tube is fast, and the time of heat exchange is short, and heat recovery efficiency is not high (especially pressure Higher, faster fluid), the fluid after the serpentine tube still carries a lot of heat, resulting in a waste of resources

Method used

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  • Boiler flue gas surplus heat reclaimer
  • Boiler flue gas surplus heat reclaimer
  • Boiler flue gas surplus heat reclaimer

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as Figure 1~3 As shown, a boiler flue gas waste heat recovery device includes a recovery device body 1, the recovery device body 1 is a shell structure with openings on both sides, and the openings on both sides of the recovery device are provided with an inlet pipe flange 2 and an air outlet pipe flange 6. The interior of the recoverer is provided with multi-layer serpentine tubes 8, the serpentine tubes 8 are provided with 6 layers, and the serpentine tubes 8 of each layer are arranged in a staggered manner. The straight section of the serpentine tube 8 is arranged in the cavity of the recovery device body 1, and the arc section of the serpentine tube 8 protrudes outside the recovery device. The serpentine tube 8 is provided with a flow rate reducing assembly 9, which is coated on the outer surface of the serpentine tube 8 in the cavity of the recovery body 1, and the flow rate reducing assembly 9 is used to slow down the flow rate of the boiler flue gas.

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Embodiment 2

[0046] Such as Figure 1~3 As shown, a boiler flue gas waste heat recovery device includes a recovery device body 1, the recovery device body 1 is a shell structure with openings on both sides, and the openings on both sides of the recovery device are provided with an inlet pipe flange 2 and an air outlet pipe flange 6. The interior of the recoverer is provided with multi-layer serpentine tubes 8, the serpentine tubes 8 are provided with 6 layers, and the serpentine tubes 8 of each layer are arranged in a staggered manner. The straight section of the serpentine tube 8 is arranged in the cavity of the recovery device body 1, and the arc section of the serpentine tube 8 protrudes outside the recovery device. The serpentine tube 8 is provided with a flow rate reducing assembly 9, which is coated on the outer surface of the serpentine tube 8 in the cavity of the recovery body 1, and the flow rate reducing assembly 9 is used to slow down the flow rate of the boiler flue gas.

[0...

Embodiment 3

[0062] Such as Figure 1~3 As shown, a boiler flue gas waste heat recovery device includes a recovery device body 1, the recovery device body 1 is a shell structure with openings on both sides, and the openings on both sides of the recovery device are provided with an inlet pipe flange 2 and an air outlet pipe flange 6. The interior of the recoverer is provided with multi-layer serpentine tubes 8, the serpentine tubes 8 are provided with 6 layers, and the serpentine tubes 8 of each layer are arranged in a staggered manner. The straight section of the serpentine tube 8 is arranged in the cavity of the recovery device body 1, and the arc section of the serpentine tube 8 protrudes outside the recovery device. The serpentine tube 8 is provided with a flow rate reducing assembly 9, which is coated on the outer surface of the serpentine tube 8 in the cavity of the recovery body 1, and the flow rate reducing assembly 9 is used to slow down the flow rate of the boiler flue gas.

[0...

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Abstract

The invention discloses a boiler furnace gas surplus heat reclaimer. The boiler furnace gas surplus heat reclaimer comprises a reclaimer body, wherein the reclaimer body is of a shell structure of which the two sides are opened; an air inlet pipe flange and an air outlet pipe flange are arranged at the opening parts of the two sides of the reclaimer; multiple layers of snake-shaped pipes are arranged in the reclaimer and are arranged in a staggered manner; a flow speed reduction assembly is arranged outside the snake-shaped pipes and is used for slowing down the flow speed of the flue gas. According to the boiler furnace gas surplus heat reclaimer, latent heat in the flue gas can be effectively utilized, so that the exhaust gas temperature of the boiler is reduced from 180 DEG C to 50 DEG C, and therefore, the utilization rate of the fuel heat energy can be increased by 8 to 15%, the heat efficiency of the boiler is effectively improved, the energy sources are reduced, and the running expense is reduced.

Description

technical field [0001] The invention belongs to the technical field of heat energy recovery, in particular to a boiler flue gas waste heat recovery device. Background technique [0002] With the accelerated implementation of my country's West-East Gas Transmission Project and other natural gas projects, it can be expected that the application of natural gas in industrial boilers will have a relatively large development. The content of water vapor in the flue gas produced by the combustion of natural gas is much higher than that of other fuels. When water vapor condenses, a large amount of heat is released, that is, the latent heat of vaporization is released. Gas-fired boilers take advantage of this characteristic of natural gas and apply the principle of condensation heat transfer to the heat transfer of the heating surface at the rear of the boiler. By carrying out experimental research on the relationship between exhaust gas temperature and condensation, boiler efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22D1/10F24H9/00F28F1/12F28F13/12F28F21/08F28F21/00B05D5/04
CPCF22D1/10F24H9/0036F28F1/12F28F13/125F28F21/00F28F21/084F28F21/085B05D5/04F28F2245/02Y02P70/10Y02E20/30
Inventor 贺金文罗晓琴官绪智桂训滨
Owner 江西南方锅炉股份有限公司