C＆C ENGINEERING, INC
CONSULTANT & CONSTRUCTION
台北市110信義區永吉路179號12樓之1 TEL: 886-2-8787-8763 FAX:886-2-8787-8651
Kaohsiung International Airport No.2 Refuse Incinerator
Kaohsiung International Airport No.2 Refuse Incinerator
LOCATION : Kaohsiung Taiwan
INSTALLATION : 1998
OPERATION : STILL RUNNING
By technical speaking, Fluidized Bed Incinerator FBI is divided into two systems:
1. Bubbling Fluidized Bed System: a). Shallow bed system b). Deep bed system
2.Circulating Fluidized Bed System: a). Single Solid Fluidized Bed system b). Multi-Solid Fluidized Bed system
The fluidized bed incinerator can be divided as the bubble-type and circulation-type in using actually, these two application in combustion furnace for many years, but in application on of incinerating, still take bubble-type fluidized bed as the core and have more experience of operating in the world treatment business at present, and there are only few waste treatment experience of part at present in the circulation-type which for harmful waste process system more.
The typical fluid bed incinerator is by a hollow round tube or the square type tube inside lining with the refractory brick (material) ,And the air distributor with the bed material to make it up. Its structure is like Fig. 1., The basic design parameter of the incinerator is like form one, The stove body equipment such as form 2, The air-assign-board design parameter like form three.
The bed material depends on function of the fluid bed, the incineration system bed is often used the sour absorbent material such as the lime stone or the solid particle of inertia, for instance sand, quartz sand, etc.,
The fluidized gas is air used in incineration system. Bed material shall be functioned as fully accumulation of heat, and dispersing the waste and may increase the waste retention time during proceeding.
the fluidized air is entering through bed bottom air-assign-board, causes the bed material and the waste fluidized, at this moment, the bed material are taken shape good mixing by the stirring of air, heating and drying the waste, and owing to the abundant contact with air gets high combustion efficiency.
The waste will produce the acid gas after burning, in order to reduce the discharge of the acid gas. we may add the soda absorbent directly (or regards soda absorbent as the bed material directly in the stove).
Form 1 Fluidized bed incinerator basic design parameter
Form 2 Body of the stove
Form 3 The air distributor board design parameter
Probe into bubble-type fluidized bed incinerator as the target. Now we're talking about the bubble-type fluidized bed, C&C is willing to share the experiences (if you're interested in) with you about our business achievement of Kaohsiung International Airport FBI System.
Kaohsiung International Airport No.2 Refuse Incinerator P&ID shown as follows:
Kaohsiung International Airport FBI System including:
(1) Feeding system (2) Ash screen system (3) Fluidized bed incinerator stove body
(4) Quencher & Heat exchanger (5) Bag Filter & Exhaust system (6) Fuel system
(7) Desulphurization device (8) Instrument & electrol system
(1) Feeding system
This system includes a set of screw conveying device and a set of single axle pump device. The screw conveying device including the mud dumper, storage tank, the screw conveying device, and frequency converter panel to transport the higher content firm shape waste.
High liquid content mud offal keep conveying trough Storage Tank, the agitator, the single axle pump, and control panel of frequency conversion. Barreled muds can be conveyed into same incinerator feeding inlet by means of 2 sets of two-way electronic hoist engine of slide rail , picture shows Feeding system sketch map.
(2) Ash screen system
(3) Fluidized bed incinerator stove body
(4) Quencher & Heat exchanger
(5) Bag Filter & Exhaust system
(6) Fuel system
(7) Desulphurization device
(8) Instrument & electrol system
Detailed information may see IES
We may see Fluidized Bed Incineration system how to work in the front discussions; Sludge, the waste has been dumped into storage tank, and conveying into furnace by feeding conveyor. Blower it blowing the air into Heat Exchanger via bellows and air distributor to Sand bed, and the flowing air cause the sand violent mixing ，normally at this time, the operation temperature is 600-800℃; The organic compound of the waste, sludge, contaminator and auxiliary fuel proceed oxidization reaction under the high temperature circumstance. the rest of volatility compound and material which is not yet oxidized completely shall be reacted under 850 ℃ at freeboard zone. then discharge the gas smoke to Cyclone and separate larger granule, then smoke via heat exchanger and lower the temperature. After that, smoke via spraying tower cooling by spraying water to lower the temperature again, and de-acid de-dust, and finally exhausted by induced fan to chimney, to the air.
(1)Gas state and solid state material is mixing completely by violent turbulence of flowing air.
(2)Stove temperature is well mixed and even, avoid hot spot been happening.
(3)Proceeding by lower temperature incinerating and low demand of excess air, System gains low NOX discharging and reducing auxiliary fuel.
(4)Identity of high accumulation of heat, stove temperature won't be dropped sharply if high moisture contain material is entering into.
(5)Lower after treatment (passing through De-acid process, gain low nitrides, low oxides )
(6)Low operation problem, low maintenance cost. (none removable kits in side stove)
(7)High efficiency combustion, high heat exothermic rate per unit volume.
(1)There is limitation of feeding material, huge material must be crashed first.
(2)Complicated Hi-tec Control system, not easy to operate.
(3) Not fit for waste treatment as low fusing point, high alkali metal contain material.
(4)High dust in exhaust.
(5)Easy to be jammed by ash at discharging system and feeding system.
Update： 18th Aug. 2006
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C＆C ENGINEERING, INC 12-1, No.179, Yong Ji Rd., Taipei, Taiwan, R.O.C.