Waste heat comprehensive utilization system for fluidized bed

A technology of fluidized bed and waste heat, which is applied in the field of waste heat recovery system of fluidized bed, which can solve the problems of no secondary use of flue gas and slag waste heat, no secondary combustion of smoke and dust, etc., so as to improve the efficiency of fluidization reaction and extend the service life lifespan and avoid overheating damage

Inactive Publication Date: 2016-07-06
GUANGDONG INST OF SPECIAL EQUIP INSPECTION
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the energy-saving device designed in this patent can only be used to dry sludge, and there is no secondary combustion of the exhausted flue gas and residual smoke in the slag, and there is no secondary utilization of the waste heat of the flue gas and slag

Method used

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  • Waste heat comprehensive utilization system for fluidized bed
  • Waste heat comprehensive utilization system for fluidized bed
  • Waste heat comprehensive utilization system for fluidized bed

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Embodiment Construction

[0041] Please refer to figure 1 According to a non-limiting embodiment of the present invention, the fluidized bed waste heat comprehensive utilization system of the present invention includes: a fluidized bed 100, a flue gas pipeline 110, a slag discharge pipeline 120, a slag cooler 200, a water-cooled dust removal device 300, waste heat boiler 400 , soot separator 500 and heat exchanger 600 .

[0042] Wherein, the fluidized bed 100 includes a fluidized bed body (not labeled), and is arranged inside the fluidized bed body and divides the inside of the fluidized bed body into a fluidization chamber 101 located in the middle and upper part and an air distribution chamber 102 located in the lower part. The plate 103 and several air caps 104 arranged on the air distribution plate 103 are used to inject the fluidizing air into the fluidizing chamber 101 .

[0043] The flue gas pipe 110 is connected to the upper part of the side wall of the fluidized bed 100 to discharge the high ...

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Abstract

The invention discloses a waste heat comprehensive utilization system for a fluidized bed. The waste heat comprehensive utilization system comprises the fluidized bed, a flue gas pipeline, a slag discharge pipeline, a slag cooler connected to the slag discharge pipeline, and a waste heat boiler connected to the slag cooler, wherein the waste heat boiler comprises an air channel, a first water tank and a second water tank which are sequentially arranged at the outer side of the air channel in an air flow direction of the air channel; at least one first through hole is formed in the air channel which corresponds to the first water tank; the first through hole is provided with a spray tube section in a downward extending manner; a heat exchange barrel, which is concentric with the spray tube section and is arranged in the air channel, is arranged outside the spray tube section in a sleeved manner; the first through hole is provided with a water supply tube section in an upward extending manner; the top of the water supply tube section is arranged at the outer side of the first water tank; the water supply tube section communicates with the spray tube section; at least one second through hole is formed in the air channel which corresponds to the second water tank; a heat tube is inserted into the second through hole; the evaporation end of the heat tube extends into the air channel; and a condensation end of the heat tube extends into the second water tank.

Description

technical field [0001] The invention relates to a waste heat recovery system, in particular to a waste heat recovery system for a fluidized bed. Background technique [0002] In the face of increasingly severe environmental problems and energy crises, the whole world is vigorously advocating energy conservation and emission reduction, especially for industrial kiln related industries with serious energy consumption and pollution. Factors that personnel must consider when designing such equipment. [0003] Taking the fluidized bed as an example, the flue gas temperature at the flue gas outlet usually reaches about 800 degrees Celsius, and the temperature of the discharged slag is as high as 1000 degrees Celsius. If the flue gas and slag are directly discharged into the environment, it will not only cause energy waste, but also cause a certain degree of damage to the environment. [0004] For example, Chinese patent 201420786054.0 discloses a circulating fluidized bed gasifi...

Claims

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Application Information

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IPC IPC(8): F23C10/00F23J15/00F23C10/24F24H3/04F28D1/04
CPCF23C10/00F23C10/24F23J15/00F24H3/04F28D1/04
Inventor 宋长志邱燕飞李树学
Owner GUANGDONG INST OF SPECIAL EQUIP INSPECTION
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