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Pure-sludge-fired circulating fluidized bed boiler

A circulating fluidized bed and boiler technology, applied in incinerators, combustion methods, combustion types, etc., to achieve stable and safe operation and reduce air pollutant emissions.

Pending Publication Date: 2021-10-22
TAIYUAN BOILER GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a circulating fluidized bed boiler for purely burning sludge, which solves the technical problem of how to develop a circulating fluidized bed boiler suitable for purely burning sludge, which can operate stably and meet the emission standards of air pollutants

Method used

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  • Pure-sludge-fired circulating fluidized bed boiler

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Embodiment Construction

[0014] The present invention will be described in detail below with reference to the accompanying drawings:

[0015]A circulating fluidized bed boiler of pure burn, including dry sludge bin 1, circulating fluidized bed boiler heat insulation furnace, cyclone separator, tail first flue 19, the second flue of the tail, the third smoke Tao 25, the bag dust collector 30 and the chimney 31, in the heat-conducting furnace of the circulating fluidized bed boiler, provided with a furnace-clad phase pressure zone 3 and furnace rolling phase zone 10, a smoke outlet in the circulating fluidized bed boiler 12 is connected to the cyclone separator, the cyclone separator is connected to the tail first flue 19 through horizontal flue 18, and the tail second flue is connected to the tail port, second in the tail. Second The tail third flue 25 is connected to the smoke port of the flue, and the smoke port of the tail third flue 25 is connected to the chimney 31 by the bag type dust collector 30; t...

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Abstract

The invention discloses a pure-sludge-fired circulating fluidized bed boiler, and aims to solve the problem of how to develop a circulating fluidized bed boiler which is suitable for purely combusting sludge and can reach the emission standard of atmospheric pollutants. A material stirring arm with an excavating claw is arranged at the bottom in a dried sludge bin (1); a feeding port (2) is formed in a hearth dense-phase zone negative pressure zone (3); dried sludge (8) enters a hearth through the feeding port; a high-temperature superheating platen (11) is arranged in a hearth lean-phase zone (10); the ratio of the diameter of a cylindrical barrel (14) to the diameter of a refeed line is 5-10; the ratio of the height of the cylindrical barrel (14) to the height of a conical transition barrel (15) is 0.3-1; the height of the refeed line is 2-9 meters; a water-cooled evaporation tube bundle (20) is arranged in a tail first flue (19); and a high-temperature electric dust remover (24) is arranged in a tail second flue. Long-term stable and safe operation of the boiler is ensured.

Description

Technical field [0001] The present invention relates to a circulating fluidized bed boiler, and more particularly to a circulating fluidized bed boiler for pure sludge. Background technique [0002] With the development of the economy, the amount of sludge produced in the production and life is constantly increasing, the pressure of sludge is increasing; due to the poisonous and harmful substances such as pathogens, heavy metals and persistent organics in sludge, if The treatment is not good, it is easy to cause secondary pollution to groundwater and soil; after the sludge is dry, the burning, the ash after burning, as a building materials material, gradually become effective disposal plan for sludge; sludge Drying incineration, maximizing the high degree of sludge reduction, stabilization and harmlessness, while circulating fluidized bed boilers have become the useful equipment of incineration sludge; but use circulating fluidized bed boiler incineration There is a large problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/30F23G5/44F23G5/50F23G5/46
CPCF23G5/30F23G5/44F23G5/50F23G5/46
Inventor 阴志青张一珍姬育敏张胜林张建春郭学茂许晓峰糜艳艳王阳刘建光
Owner TAIYUAN BOILER GROUP
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