220t/h-grade circulating fluidized bed boiler with medium-temperature and medium-pressure parameters

A circulating fluidized bed and boiler technology, applied in fluidized bed boilers, fluidized bed combustion equipment, steam boilers, etc., can solve the problems of unreasonable and unsatisfactory setting of tail flue economizer and low temperature superheater, etc. Achieve the effects of easy maintenance and maintenance, stable operation, and widening the development path

Inactive Publication Date: 2019-01-25
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the unreasonable setting of the tail flue economizer and the low-temperature superheater in the use of the existing boiler in the chemical industry, which leads to the inability to meet the requirements of the existing boiler in the chemical industry. question of needs

Method used

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  • 220t/h-grade circulating fluidized bed boiler with medium-temperature and medium-pressure parameters
  • 220t/h-grade circulating fluidized bed boiler with medium-temperature and medium-pressure parameters
  • 220t/h-grade circulating fluidized bed boiler with medium-temperature and medium-pressure parameters

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specific Embodiment approach 1

[0015] Specific implementation mode one: combine figure 1 Describe this embodiment, a 220t / h circulating fluidized bed boiler adopting medium temperature and medium pressure parameters in this embodiment, which includes a boiler front shaft 1, a boiler tail shaft 2 and a cyclone separator arranged in an M shape as a whole 3,

[0016] Boiler front shaft 1 is a general crane structure, and the outer walls around shaft 1 are membrane water-cooled walls. Boiler tail shaft 2 is also a general crane structure. The flue at the top of boiler front shaft 1 passes through cyclone separator 3 and boiler tail shaft 2. The flue at the top is connected, and the lower part of the cyclone separator 3 is connected to the return device 4 and the ash cooler. The front shaft 1 of the boiler adopts a membrane wall with insulation and an external metal guard plate, and the tail shaft 2 of the boiler adopts a membrane type Insulation is added to the wall, and the shaft 2 at the rear of the boiler i...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination figure 1 Describe this embodiment, a 220t / h circulating fluidized bed boiler adopting medium temperature and medium pressure parameters in this embodiment, the cyclone separator 3 adopts a vertical conical cylinder structure, and the internal vertical direction is respectively from bottom to top Return material standpipe area 3-1, cyclone separation area 3-2, clean room area 3-3, said cyclone separation area 3-2 is provided with a plurality of cyclone separator tubes 3-4, a plurality of cyclone separator tubes 3- 4 is hoisted inside the cyclone separator 3. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Specific implementation mode three: combination figure 1 Describe this embodiment, a 220t / h circulating fluidized bed boiler adopting medium temperature and medium pressure parameters in this embodiment, the low-temperature superheater 2-2 is a convection type superheater, and the low-temperature superheater 2-2 is composed of a large number of It consists of parallel parallel serpentine tubes, the outer diameter of the serpentine tube is 32-44mm, the wall thickness of the serpentine tube is 3-7mm, and the material of the serpentine tube is carbon steel pipe. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a 220t/h-grade circulating fluidized bed boiler, and solves the problems that the requirements on the parameters of medium temperature (450 DEG C) and medium pressure (3.82 MPa) of the existing boiler in chemical industry cannot be met because a flue economizer and a low-temperature over-heater are arranged unreasonably in the use of the existing boiler in the chemical industry is solved. The 220t/h-grade circulating fluidized bed boiler comprises a boiler front part vertical well, a boiler tail vertical well and a cyclone separator; the boiler front part vertical wellis of a total lifting structure; the boiler tail vertical well adopts the total lifting structure; a flue in the top of the boiler front part vertical well communicates with a flue in the boiler tailvertical well through the cyclone separator; the boiler tail vertical well comprises a tail flue, the low-temperature over-heater, a first economizer, a second economizer and an air pre-heater; and the low-temperature over-heater, the first economizer, the second economizer and the air pre-heater are arranged in the tail flue in sequence from top to bottom. The 220t/h-grade circulating fluidized bed boiler is applied to the field of chemical industries.

Description

technical field [0001] The invention relates to the field of circulating fluidized bed boilers, in particular to a 220t / h circulating fluidized bed boiler with medium temperature and medium pressure parameters. Background technique [0002] At present, domestic and foreign chemical industries have an increasing demand for 220t / h circulating fluidized bed boilers with medium temperature and medium pressure parameters. In the use of existing boilers in the chemical industry, the settings of tail flue economizers and low-temperature superheaters are unreasonable. , resulting in the inability to meet the needs of the existing boilers in the chemical industry with medium temperature and medium pressure parameters of 450°C and 3.82MPa. The current 220t / h circulating fluidized bed boilers have high temperature and high pressure parameters of 540°C and 9.81Mpa, which cannot meet the requirements of the chemical industry. The industry requires medium temperature and medium pressure p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/00F23C10/10
CPCF22B31/0007F23C10/10
Inventor 马明华高新宇姜孝国
Owner HARBIN BOILER
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