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High-temperature high-pressure waste incineration boiler

A waste incineration, high temperature and high pressure technology, applied in the direction of incinerators, combustion methods, combustion types, etc., can solve problems such as high temperature corrosion of superheaters and water cooling systems, achieve the effects of improving thermal efficiency, solving high temperature corrosion, and solving furnace coking

Pending Publication Date: 2019-10-22
SHANGHAI SUS ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since domestic waste contains elements such as Cl, S, and alkali metals, after increasing the steam temperature and pressure, the superheater and water-cooling system face high-temperature corrosion problems

Method used

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  • High-temperature high-pressure waste incineration boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] exist figure 1 In the process, the waste is burned in the incinerator system (1), and the high-temperature flue gas produced enters the waste incineration vertical boiler for waste heat recovery, and high-quality steam is generated and sent to the steam turbine generator set. A high-temperature and high-pressure (9.8MPa, 540°C) waste incineration boiler has a vertical suspension structure. A channel (5), a connecting flue (21) and a second channel ( 6), three-channel (7) and four-channel (8). The water-cooled combustion chamber (4) is composed of a membrane-type water-cooled wall around the grate, refractory bricks are laid in the contact area with the garbage, and high thermal conductivity silicon carbide castables are laid in the rest of the area to reduce the temperature of the combustion chamber to avoid coking. The flue gas recirculation and secondary air nozzles (23) are arranged in the front and rear arch areas of the water-cooled combustion chamber (4). When th...

Embodiment 2

[0034] exist image 3 In the process, the waste is burned in the incinerator system (1), and the high-temperature flue gas produced enters the waste incineration boiler for waste heat recovery, and high-quality steam is generated and sent to the steam turbine generator set. A high-temperature and high-pressure (9.8MPa, 540°C) waste incineration boiler has a horizontal suspension structure. A channel (5), a connecting flue (21) and a second channel ( 6), three channels (7) and horizontal channels (8). The water-cooled combustion chamber (4) is composed of a membrane-type water-cooled wall around the grate, refractory bricks are laid in the contact area with the garbage, and high thermal conductivity silicon carbide castables are laid in the rest of the area to reduce the temperature of the combustion chamber to avoid coking. The flue gas recirculation and secondary air nozzles (23) are arranged in the front and rear arch areas of the water-cooled combustion chamber (4). When t...

Embodiment 3

[0037] exist Figure 5 In the process, the waste is burned in the incinerator system (1), and the high-temperature flue gas produced enters the waste incineration boiler for waste heat recovery, and high-quality steam is generated and sent to the steam turbine generator set. A high-temperature and high-pressure (9.8MPa, 540°C) waste incineration boiler has a π-type suspension structure. A channel (5), a connecting flue (21) and a second channel ( 6), three channels (7), horizontal channels (8) and four channels (24). The water-cooled combustion chamber (4) is composed of a membrane-type water-cooled wall around the grate, refractory bricks are laid in the contact area with the garbage, and high thermal conductivity silicon carbide castables are laid in the rest of the area to reduce the temperature of the combustion chamber to avoid coking. The flue gas recirculation and secondary air nozzles (23) are arranged in the front and rear arch areas of the water-cooled combustion ch...

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Abstract

The invention relates to the field of municipal solid waste incineration, in particular to a high-temperature high-pressure waste incineration boiler, a waste incineration boiler with the main steam temperature of 540 DEG C and the main steam pressure of 9.8 MPa. According to the high-temperature high-pressure waste incineration boiler, a water-cooled combustion chamber is adopted, and then a first channel, a first channel and second channel connecting channel, a second channel and a third channel are sequentially arranged according to the flowing direction of flue gas; and a platen superheater is arranged on the upper portion of the second channel. The high-temperature high-pressure waste incineration boiler has the advantages that by adopting the platen superheater, steam can be heated to 540 DEG C, so that the heat efficiency of a steam turbine generator unit system of a matched waste incineration power plant is improved to 34%.

Description

technical field [0001] The invention relates to the field of municipal solid waste incineration, in particular to a waste incineration boiler with a main steam temperature of 540° C. and a main steam pressure of 9.8 MPa. Background technique [0002] At present, domestic and foreign waste incineration power plants mostly use boiler steam at 4MPa and 400°C. Due to the low initial steam parameters, the thermal efficiency of the whole plant is generally lower than that of conventional fuel power plants. At present, there are three ways to improve the thermal efficiency of waste incineration power generation: increasing the initial steam pressure, increasing the steam temperature, and intermediate reheating. Among them, increasing the steam temperature and pressure is the most ideal and effective technical means. However, since domestic waste contains elements such as Cl, S, and alkali metals, after increasing the steam temperature and pressure, the superheater and water-cooling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/00F23G5/44F23G5/46F23G5/48F23J1/00F23J3/02F23L9/00F22B1/18F22D1/02F22G5/12F22G7/12F28G1/16F28F19/06F28F19/04
CPCF22B1/18F22D1/02F22G5/123F22G7/12F23G5/00F23G5/44F23G5/46F23G5/48F23G2206/20F23J1/00F23J3/02F23L9/00F28F19/04F28F19/06F28G1/166
Inventor 谢军邓昌梅黄兵张心成郑江龙陈枫郭孝武瞿兆舟张利军王高尚许力
Owner SHANGHAI SUS ENVIRONMENT
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