Novel dried tail gas waste heat step recovering system

A dry tail gas, cascaded recovery technology, applied in heat recovery systems, heat pumps, climate sustainability, etc., can solve the problem that the latent heat of vaporization of dry tail gas has not been effectively recovered, waste heat recovery has not made significant progress, and the lack of low cost and high efficiency and other problems, to achieve the effect of easy separation, good temperature uniformity and convenient installation

Active Publication Date: 2013-02-27
SHANDONG TIANLI DRYING TECH & EQUIP
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Problems solved by technology

However, due to the low temperature of the exhaust gas of the dryer (70-150°C), the recovery efficiency of traditional heat exchangers is low, and it takes up a lot of space, and lacks low-cost and high-efficiency heat exchange methods and heat exchange devices. No significant progress has been made in the waste heat recovery of the tail gas of the dryer, especially the latent heat of vaporization in the drying tail gas has not been effectively recovered

Method used

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  • Novel dried tail gas waste heat step recovering system

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] figure 1 Among them, it includes an oscillating flow heat pipe heat exchanger 1 and a heat pump unit 2, both of which are cascaded; the oscillating flow heat pipe heat exchanger 1 is connected to the tail of the drying operation device, and receives the exhaust gas of the drying equipment and the pumped heat medium (air or water); the heat pump unit 2 is connected with heat users and evacuation equipment.

[0014] The working process of the present invention is as follows: the tail gas from the dryer first enters the oscillating flow heat pipe heat exchanger 1, and after the heating section of the heat exchanger is heated, the working fluid transfers heat to the condensation section by self-excited pulsation, so that the temperature of the pumped air or water is raised ; Then the dry tail gas enters the secondary heat exchanger—heat pump unit 2....

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Abstract

The invention discloses a novel dried tail gas waste heat step recovering system, which can effectively recover the dried tail gas waste heat. The tail gas waste heat can be effectively recovered, and vaporization latent heat of water vapor in the tail gas can be recovered. The novel dried tail gas waste heat step recovering system structurally comprises at least one sensible heat recovering device and at least one latent heat recovering device, wherein the sensible heat recovering device and the latent heat recovering device are in cascade connection, the sensible heat recovering device is communicated with the tail part of a drying operation device for receiving the tail gas of drying equipment and pumped heat media, and the latent heat recovering device is connected with heat users andexhaust equipment.

Description

technical field [0001] The invention relates to a waste heat cascade recovery system, in particular to a novel drying tail gas waste heat cascade recovery system capable of recovering tail gas sensible heat and latent heat in drying operations. Background technique [0002] At present in China, drying energy consumption accounts for about 12% of the total energy consumption of industrial production, among which the tail gas in the fluidized drying process carries about 80% of the total heat input into the system, and the recovery of waste heat in the drying process has far-reaching implications for energy saving and emission reduction of the entire industry meaning and necessity. However, due to the low temperature of the exhaust gas of the dryer (70-150°C), the recovery efficiency of traditional heat exchangers is low, and it takes up a lot of space, and lacks low-cost and high-efficiency heat exchange methods and heat exchange devices. The recovery of waste heat from the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/06
CPCY02B30/123Y02B30/52
Inventor 李选友耿文广马训强柴本银张文克王超生罗光亮杨南奇
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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