Waste heat recovery device of calcinator

A waste heat recovery device and waste heat recovery technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve problems such as energy loss, and achieve the effect of easy and simple implementation

Inactive Publication Date: 2012-01-11
SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of the waste gas discharged from the roasting furnace is about 135 ° C ~ 180 ° C, and the waste gas contains about 46% water vapor, so the exhaust gas will take away a large amount of sensible heat and latent heat. If this part of heat is not recovered effectively, it will be cause a lot of energy loss

Method used

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  • Waste heat recovery device of calcinator
  • Waste heat recovery device of calcinator

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 As shown, the roaster waste heat recovery device of the present invention is provided with at least one waste heat recovery heat exchanger 5, and this embodiment is one. A smoke exhauster 3 is provided between the waste heat recovery heat exchanger 5 and the roasting furnace 1, and the smoke exhauster 3 and the roasting furnace 1 are connected through the front smoke pipe 2 of the smoke exhauster, and the smoke exhauster 3 and the waste heat recovery heat exchanger 5 are connected through the rear smoke pipe 4 of the exhaust machine, the waste heat recovery heat exchanger 5 and the chimney 7 are connected through the chimney front smoke pipe 6, the upper part of the waste heat recovery heat exchanger 5 is connected with the cold water pipe 8, and the waste heat recovery heat exchange The bottom of device 5 com...

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Abstract

The invention relates to a waste heat recovery device, in particular to a waste heat recovery device of an aluminum hydroxide calcinator in alumina production. The waste heat recovery device of the calcinator comprises the calicnator and a chimney and is characterized in that at least one waste heat recovery heat exchanger is arranged between the calcinator and the chimney, a smoke ventilator is arranged between the waste heat recovery heat exchanger and the calcinator, the smoke ventilator is connected with the calcinator through a front smoke tube of the smoke ventilator, the smoke ventilator is connected with the waste heat recovery heat exchanger through a rear smoke tube of the smoke ventilator, the waste heat recovery heat exchanger is connected with the chimney through a front smoke tube of the chimney, the upper part of the waste heat recovery heat exchanger is communicated with a cooling tube, and the bottom of the waste heat recovery heat exchanger is communicated with a hot water tube.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a waste heat recovery device for exhaust gas of an aluminum hydroxide roasting furnace in alumina production. Background technique [0002] In the production of alumina plants, the process and equipment of roasting aluminum hydroxide in gaseous suspension roaster, fluidized flash roaster or circulation roaster are used to remove crystal water and attached water in aluminum hydroxide and complete part of the crystal form transformation to obtain the final alumina product. The temperature of the waste gas discharged from the roasting furnace is about 135 ° C ~ 180 ° C, and the waste gas contains about 46% water vapor, so the exhaust gas will take away a large amount of sensible heat and latent heat. If this part of heat is not recovered effectively, it will be cause a lot of energy loss. [0003] In alumina production, the aluminum hydroxide produced by decomposition needs to be wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00
CPCY02P10/25Y02P80/15
Inventor 廖新勤郭沈姜跃华王丽娟
Owner SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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