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A Steam Waste Heat Recovery Device for Boiler Combustion System

A waste heat recovery device and boiler combustion technology, applied in the direction of combustion methods, combustion equipment, solid fuel combustion, etc., can solve the problems of high energy consumption and high cost, and achieve increased speed, easy ignition, reduction of nitrogen oxides and Effect of pollutants such as sulfides

Active Publication Date: 2018-12-21
杭州富丽达热电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this solution is that the air preheater preheats the air entering the boiler through external heating to improve combustion efficiency
That is, it needs to consume external energy again, resulting in large energy consumption and high cost

Method used

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  • A Steam Waste Heat Recovery Device for Boiler Combustion System
  • A Steam Waste Heat Recovery Device for Boiler Combustion System
  • A Steam Waste Heat Recovery Device for Boiler Combustion System

Examples

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Embodiment Construction

[0046] The present invention will be further described with reference to the accompanying drawings.

[0047] Such as figure 1 As shown, a boiler combustion system with a steam waste heat recovery device includes a raw coal bunker 1, a boiler 2, a cyclone separator 3, an electric dust collector 4, a desulfurization device 5 and a chimney 6.

[0048] Such as figure 1 with figure 2 As shown, the raw coal bunker 1 is provided with several. The lower end of the raw coal bunker 1 is provided with a first discharge hopper 7, and a valve is provided at the opening of the lower end of the first discharge hopper 7. Such as figure 2 with image 3 As shown, the lower end of the first discharge hopper 7 is provided with a metering belt 8 and a rotating roller 9 . Such as image 3 with Figure 4 As shown, the metering belt 8 is sleeved outside the rotating roller 9, and there are two rotating rollers 9, which are located at both ends of the metering belt 8 respectively. One end o...

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Abstract

The invention discloses a steam waste heat recycling device for a boiler combustion system. The steam waste heat recycling device comprises a boiler and a cyclone separator connected with the boiler; slag discharging pipes for discharging coal slag are connected to the lower end of the boiler; an air exhaust pipe is connected to an air outlet of the cyclone separator, and an oxygen preheater and an air preheater are arranged in the air exhaust pipe; one end of the oxygen preheater is provided with an oxygen pipe, the other end of the oxygen preheater is connected with a hot oxygen pipe, the hot oxygen pipe penetrates through the boiler, and the end, away from the oxygen preheater, of the hot oxygen pipe communicates with the boiler; and one end of the air preheater is provided with an air pipe, and the other end of the air preheater is connected with a hot air pipe communicating with the side wall of the boiler. Oxygen and air are both heated by waste gas in the air exhaust pipe and then enter the boiler, accordingly, on the premise that the oxygen and the air are heated, external energy sources do not need to be used, and energy consumption and the cost are reduced. Meanwhile, the oxygen and the air are introduced into the boiler at the same time, thus, fuel in the boiler can be burned more sufficiently, and the combustion utilization rate of the fuel is increased.

Description

technical field [0001] The invention relates to boiler combustion equipment, in particular to a steam waste heat recovery device for the boiler combustion system. Background technique [0002] The boiler is an indispensable piece of equipment in many productions that require the use of steam. By burning fuel, steam is evaporated for production. In the process of steam production, the state of boiler combustion has a very significant impact on steam production and fuel utilization. From Arrhenius' law, the higher the absolute temperature, the faster the chemical reaction in the boiler. Therefore, when the bleed air enters the boiler, the air needs to be heated to improve the combustion efficiency. [0003] For example, the patent with the announcement number CN202032602U discloses a lignite drum flue gas pre-drying power generation integrated system, which combines the lignite drum flue gas drying system with the boiler combustion system of the thermal power plant, includin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23B70/00F23C9/06F23L15/00
CPCF23B70/00F23C9/06F23L15/00Y02E20/34
Inventor 黄科体王建刚
Owner 杭州富丽达热电有限公司
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