Circulating fluidized bed boiler burning straw-like biomass and feeding method

A circulating fluidized bed and biomass technology, applied in the field of boilers and feeding materials, can solve problems such as affecting the continuous and reliable operation and production efficiency of biomass power plants, affecting the safe operation of boilers, and complex feeding systems, avoiding bridges and Clogging phenomenon, simple structure, high combustion efficiency

Active Publication Date: 2009-12-30
CHINA HUADIAN ENG +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Since straw is a light material with a large volume (compared to a coal-fired boiler with the same capacity, the feed volume is about 10 times that of coal), this large-volume feed causes the feed system to be complicated and costly; It is easy to bridge and block during the

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  • Circulating fluidized bed boiler burning straw-like biomass and feeding method

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Embodiment Construction

[0016] Embodiments of the present invention: as attached figure 1 As shown, it includes a compression molding equipment 1 for compressing straw-like biomass, a front feeder 2 and a belt feeder 3 . Wherein the compression molding equipment 1 is connected with the feeding port of the feeder bin 2 through the conveyor belt 14, the discharge port of the feeder bin 2 is connected with the belt feeder 3, and the belt feeder 3 is connected with the feeding port of the furnace 4 connected. A water-cooled evaporation panel heating surface 5 is provided in the upper space of the furnace 4, and the water-cooled evaporation panel heating surface 5 can further reduce the flue gas temperature at the outlet of the furnace; The lower end is connected with a circulation loop and a feeder 7 and is connected with the dense-phase area of ​​the furnace 4, and a replenishment port 8 for bed materials and circulating materials is provided above the return pipe at the outlet of the feeder 7 . The t...

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Abstract

The invention discloses a circulating fluidized bed boiler burning straw-like biomass and a feeding method. The feeding method comprises the following steps that: before being delivered into a furnace, the straw-like biomass serving as a fuel is crushed and compressed by compression molding equipment so as to be solidified; and the solidified straw-like biomass is conveyed to a furnace by a conveying belt so as to be burnt. By compressing the light and large-volume straw-like biomass before conveying the light and large-volume straw-like biomass to the furnace, the method reduces the volume of the straw-like biomass, has the advantages of simple structure and low cost, keeps the straw-like biomass away from bridging and block which frequently occur in a conveying process, ensures smooth feeding and the safe operation of the boiler, and effectively guarantees the continuous, reliable and safe operation of biomass power plants.

Description

technical field [0001] The invention relates to a boiler and a feeding method, in particular to a circulating fluidized bed boiler burning straw-like biomass and a feeding method thereof. Background technique [0002] As society's demand for energy increases, fossil fuels, which are the main source of energy, are rapidly declining. Therefore, looking for a renewable alternative energy source has become the focus of widespread concern in society. Biomass (such as straw biomass) energy is an ideal renewable energy source. It has a wide range of sources, and a large amount of industrial, agricultural and forest wastes are produced every year. In the world's current energy consumption, biomass energy consumption accounts for 14% of the world's total energy consumption, ranking fourth after oil, coal and natural gas. In developing countries, biomass accounts for a larger proportion, reaching more than 50%. Compared with fossil fuels, biomass energy has the following advantages...

Claims

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Application Information

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IPC IPC(8): F23C10/22F22G7/12F22D1/02F23L15/00F23C10/26
CPCY02E20/34
Inventor 贠小银李和平邱河梅
Owner CHINA HUADIAN ENG
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