High-capacity circulating fluidized bed boiler

A circulating fluidized bed, large-capacity technology, used in fluidized bed combustion equipment, boiler water pipes, steam boilers, etc. Insufficient surface layout and other problems, to achieve the effect of changing the size of the available range, smooth material return without pulsation, and a large size of the available range

Pending Publication Date: 2020-12-04
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: as the capacity of the traditional circulating fluidized bed boiler increases, it cannot effectively cope with the larger increase in the heat absorp

Method used

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  • High-capacity circulating fluidized bed boiler
  • High-capacity circulating fluidized bed boiler
  • High-capacity circulating fluidized bed boiler

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Example Embodiment

[0020] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0021] like figure 2 As shown, a large-capacity circulating fluidized bed boiler disclosed in this embodiment includes a water-cooled fireplace chamber 1 , a cyclone separator 2 and a rear smoke well 3 . The heating surface in the soda-water system can be arranged on the wall of the three components, in the inner cavity, or in the cavity where the economizer hot surface pipe 16 under the air chamber 15 is located. In the proc...

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Abstract

The invention provides a high-capacity circulating fluidized bed boiler. The high-capacity circulating fluidized bed boiler comprises a water-cooled wall hearth, a cyclone separator and a rear smoke well, a high-temperature smoke outlet of the water-cooled wall hearth communicates with an inlet of the cyclone separator, a solid material outlet of the cyclone separator communicates with a materialreturn opening of the water-cooled wall hearth, a steam-state material outlet of the cyclone separator communicates with the rear smoke well for heating feed water, and the water-cooled wall hearth, the cyclone separator and the rear smoke well are connected to provide a steam-water main circulation loop. The high-capacity circulating fluidized bed boiler is characterized in that a heating surfaceof the steam-water main circulation loop only comprises a screen structure arranged in the water-cooled wall hearth. The high-capacity circulating fluidized bed boiler can meet the capacity requirement of the high-capacity circulating fluidized bed boiler, is flexible in design and good in adjusting performance and can adapt to different fuel, and safe and stable operation of the boiler is ensured.

Description

technical field [0001] The invention relates to a high-efficiency ultra-supercritical circulating fluidized bed boiler, in particular to the overall layout of a large-capacity circulating fluidized bed boiler and the design of its steam-water flow. Background technique [0002] Circulating fluidized bed boilers have the characteristics of a wide range of applicable fuels and low pollution emissions, and are widely used in various industries. In order to obtain a higher energy utilization rate, the design of circulating fluidized bed boilers continues to develop in the direction of large capacity and high parameters. In order to meet this requirement, a structural layout of a large-capacity circulating fluidized bed boiler and its steam-water flow design are now provided. [0003] Such as figure 1 As shown, it is a simplified structural diagram of a traditional circulating fluidized bed boiler, which is an M-shaped structure with a single furnace. Furnace 1 is a membrane-t...

Claims

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Application Information

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IPC IPC(8): F22B3/08F22B31/08F22B37/10F22B37/26F22G7/00F23C10/18F23C10/22F23C10/24F23M5/08
CPCF22B3/08F22B31/08F22B37/10F22B37/26F22G7/00F23C10/18F23C10/22F23C10/24F23M5/08
Inventor 肖峰沈引根隗婷高琴黄建荣许秀启罗勇军贾良晨
Owner SHANGHAI BOILER WORKS
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