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A boiler flue gas waste heat recovery and utilization device

A flue gas waste heat and boiler technology, which is applied in the field of industrial boilers, can solve the problems of low preheating utilization rate and insufficient coal preheating, and achieves the effects of good filtering, improving service life and avoiding cumbersome operations.

Active Publication Date: 2021-12-03
南通宏耀锅炉辅机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of insufficient coal preheating and low preheating utilization rate in the prior art, and propose a boiler flue gas waste heat recovery and utilization device

Method used

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  • A boiler flue gas waste heat recovery and utilization device
  • A boiler flue gas waste heat recovery and utilization device
  • A boiler flue gas waste heat recovery and utilization device

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Embodiment Construction

[0031] refer to Figure 1-9 , a boiler flue gas waste heat recovery and utilization device, including a base 1, the upper surface of the base 1 is fixedly connected with an ash removal tube 2 through a bracket, such as figure 1 and figure 2 As shown, the upper part of the ash removal tube 2 is cylindrical, and the lower part is a truncated cone, so that the flue gas with fly ash enters the ash removal bin 2, and the flue gas will rotate along the inner wall of the ash removal bin 2 from top to bottom , fly ash and other large particles of sundries, under the action of centrifugal force, cling to the inner wall of the ash removal tube 2 and fall down, while the flue gas after pre-dust removal will swirl upward along the center line of the ash removal tube 2 and pass through the rotating tube 201 to be discharged. into the preheating box 3, so that the flue gas is pretreated, and the fly ash in the flue gas is removed, so that the flue gas can directly contact with the coal, b...

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Abstract

The invention discloses a flue gas waste heat recovery and utilization device for a boiler, which comprises a base. The top wall of the box is fixedly connected with a smoke exhaust tube, the bottom wall of the preheating box is provided with a through hole, the top wall of the ash removal tube is connected with a rotating cylinder through a bearing, and one end of the rotating cylinder located in the through hole is rotated by a bearing. A plurality of rotating rods are connected, and the rotating rods are interference-fitted with sub-gears, and the sub-gears are meshed together with a parent gear, and the parent gears are interference-fitted with a rotating shaft. The advantage is that: compared with the prior art, the present invention pre-treats the flue gas first, so that the flue gas can directly contact with the coal, and continuously stirs the coal, so that the coal can more fully absorb the waste heat in the flue gas, thereby having a more Good waste heat utilization rate, and at the same time, it can avoid the corrosion of condensed water on the exhaust pipe, and improve the service life of the device.

Description

technical field [0001] The invention relates to the technical field of industrial boilers, in particular to a boiler flue gas waste heat recovery and utilization device. Background technique [0002] Industrial boilers are common thermal equipment. Industrial boilers generally use coal as the raw material for combustion. They burn coal and use the heat of combustion to heat water or other liquids to generate steam for power generation or gas supply. Coal Combustion will produce a lot of flue gas, and there are a lot of harmful gases in the flue gas, and at the same time, it carries a lot of heat. Direct emission will not only cause air pollution, but also cause energy waste. [0003] Existing invention patents, such as a Chinese patent application number CN201611216917.0 discloses a device for recovering waste heat from industrial boiler flue gas, which mainly consists of a base, a coal drying box, a hoarding, a movable cover, coal, Composed of side plates, rotating rods, g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J15/02F23J15/06F23K1/04F28B9/08
CPCF23J15/027F23J15/06F23K1/04F28B9/08Y02E20/30
Inventor 吴洋
Owner 南通宏耀锅炉辅机有限公司
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