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Multi-procedure circulating fluidized bed boiler with drying device and drying device

A technology of circulating fluidized bed and drying equipment, which is applied in the field of boilers and can solve the problems of equipment complexity and matching and difficult synchronous adjustment.

Inactive Publication Date: 2017-06-13
BEIJING NOWVA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the drying equipment and the boiler are simply operated separately, it is difficult to adjust synchronously due to the complexity and matching of the two equipment.

Method used

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  • Multi-procedure circulating fluidized bed boiler with drying device and drying device

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Effect test

Embodiment 1

[0034] Embodiment 1 of the present invention provides a multi-process circulating fluidized bed boiler with drying equipment, which can make full use of resources and treat harmful substances. Its structure is as follows figure 1 shown, including:

[0035] Inclined grate 1, furnace arch 2, main combustion chamber 3, auxiliary combustion chamber 4, burnout chamber 5, separator 6, tail shaft 7, primary feeder 8, secondary feeder 9, grate air chamber 10 and feeding propulsion device.

[0036] The furnace of the main combustion chamber 3 is divided into a dense-phase area 31 of the main combustion chamber and a dilute-phase area 32 of the main combustion chamber with the secondary tuyere 33 as the dividing line. Below the secondary tuyere 33 is the dense-phase zone 31 of the main combustion chamber, and above the secondary tuyere 33 is the dilute-phase zone 32 of the main combustion chamber. Wherein the bottom of the dense-phase area 31 of the main combustion chamber is provided...

Embodiment 2

[0054] Embodiment 2 of the present invention provides a drying device for a multi-process circulating fluidized bed boiler, which includes: an inclined grate 1 , a furnace arch 2 and a grate air chamber 10 . The functions of each component and the positional relationship among them are the same as those of the related components in Embodiment 1, and will not be described in detail here.

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Abstract

The invention relates to a multi-procedure circulating fluidized bed boiler with a drying device and the drying device. The front end of an oblique fire grate (1) is arranged below an outlet of a feeding pushing device, and the rear end of the oblique fire grate (1) is arranged in front of feeding of an air distribution plate of a main combustion chamber (3). The horizontal projection length of the oblique fire grate (1) is recorded as L, the bottom of the rear 2 / 3 L part of the oblique fire grate (1) is provided with a fire grate air chamber (10), and the rear 2 / 3 L part of the oblique fire grate (1) is separated from the front 1 / 3 L part of the oblique fire grate (1). The front part of a boiler arch (2) is connected with the feeding pushing device, the rear part of the boiler arch (2) is connected with a hearth in a dense phase area of the main combustion chamber, and an airtight cavity is formed. The oblique fire grate (1) is arranged on the bottom of the airtight cavity of the boiler arch (2). According to the multi-procedure circulating fluidized bed boiler with the drying device, the drying device and the boiler are mutually matched to run, high-moisture fuels can be sufficiently preheated and dried in the backward rolling process, and the fuels are sufficiently fluidized and burned after entering the main combustion chamber. The multi-procedure circulating fluidized bed boiler with the drying device is particularly suitable for the fuels with relatively large moisture, the resources can be sufficiently utilized, and hazardous substances can be treated sufficiently.

Description

technical field [0001] The invention relates to the field of boilers, in particular to a multi-flow circulating fluidized bed boiler with drying equipment and drying equipment. Background technique [0002] High-moisture biomass fuels, such as papermaking waste, furfural residue, medicine residue, starch, coffee grounds, etc., generally have a moisture content of ≥50%. Due to the high water content of the fuel, it is often accompanied by a low calorific value. Therefore, conventional high-moisture biomass fuel boilers generally need to be blended with a large proportion of coal during the combustion process to operate stably, otherwise the temperature of the main combustion chamber is likely to be low. , Unstable combustion, low fuel burnout rate, or even no fire. [0003] If the drying equipment and the boiler are simply operated separately, it is difficult to adjust synchronously due to the complexity and matching of the two equipment. Contents of the invention [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C6/04F23C10/22
CPCF23C6/04F23C10/22F23C2206/10
Inventor 康建斌王军岗胡峰
Owner BEIJING NOWVA ENERGY TECH CO LTD