Waste Gasifier: single furnace treatment capacity up to 50 ton/day, it can treat household waste, industrial waste and medical waste.
Technical Parameters Of Waste Gasifier
|No||Model||Gasifier inner diameter (mm)||MSW treatment capacity||Industrial waste treatment capacity||Medical waste treatment capacity|
Working Principle: Haiqi pyrolysis gasification technology uses pyrolysis gasification principle to process solid waste, ensuring the stability and high efficiency of the combustion conditions without any auxiliary materials.
Types Of Garbage Suitable For Waste Gasifier
Household waste Industrial waste Medical waste
> 2,000 kcal/kg > 3,500 kcal/kg > 4,000 kcal/kg
> 8.3 MJ/kg > 14.6 MJ/kg > 16.7 MJ/kg
Advantages Of Waste Gasifier
●No auxiliary fuel required
●No need for waste pretreatment and drying
●Suitable for many types of garbage
●Minimize emissions of hazardous substances
●Ashes are completely burned out
Technical Advantage:”High combustion temperature, low thermal cut rate, small fly ash displacement, low dioxin emission concentration”
|Compare Content||Grate Furnace||Pyrolysis gasifier|
|Incineration Mechanism||The Garbage Is Directly Burned, The Combustion Temperature Is 800~1000°C, And The Incineration Mechanism Is Generally||Two-Stage Treatment Is Adopted, And The Waste Is Now Pyrolyzed And Gasified, And Then Small-Molecule Combustible Gas Is Burned. The Combustion Temperature Is 850~1100 °C, And The Incineration Mechanism Is Advanced.|
|Furnace Body Structure And Grate Material||The Structure Is Complex And The Shape Is Large; The Grate Works At A High Temperature, And The Requirements For The Grate Material Are High.||The Structure Is Relatively Simple And Compact; The Grate Works At A Low Temperature, And The Requirements For The Grate Material Are Low|
|Types Of Garbage||Dispose Of Domestic Waste||It Can Handle Both Domestic Waste And Industrial Waste, As Well As Hazardous Waste With High Calorific Value (Including Medical Waste)|
|Floor Space (300t/D)||40-50 Acres||30-40 Acres|
|Fly Ash Emissions||Fly Ash Discharges A Lot, Accounting For About 5% Of The Total Garbage||Fewer Fly Ash Emissions, Accounting For About 1% Of The Total Garbage, Are Environmentally Friendly|
|Acids And Dust Emissions||The Original Value Of Acidic Substances Such As So2 And Nox Is Relatively High; The Dust Emission Concentration Is 6000~8000mg/Nm3||The Original Value Of So2, Nox And Other Acidic Substances Is Relatively Low; The Dust Emission Concentration Is Less Than Or Equal To 3000mg/Nm3|
|Factory Environment||The Environmental Control Of The Factory Area Is Difficult, And The Incinerator Workshop Has Certain Bottom Ash And Leachate, Noise And Odor Pollution.||The Environment Of The Factory Area Is Well Controlled, And The Bottom Ash, Noise And Odor Pollution In The Workshop Are Very Little.|
Environmental Advantages: Combustion in the secondary chamber is a small molecule combustible gas. The pollutants it produces, such as SOx (acid gas), NOx (nitrogen oxides), dioxins, and heavy metals are very small, especially the fly ash is less than 1% of the amount of garbage, far lower than the amount of fly ash generated by the grate furnace technology, fluidized bed technology, greatly reduced the secondary pollution caused by waste disposal to the environment, also reduced the cost of tail gas treatment.
Economic Advantages:”Simple and compact furnace structure, easy operation to start and stop furnace, easy maintenance, low energy consumption”
Features Of Haiqi Waste Gasification Power Plant
●The Haiqi gasifier adopts “ultra-low air combustion technology”, which is composed of primary combustion chamber and secondary combustion chamber. The primary combustion chamber can be divided into three areas: preheating drying zone, pyrolysis gasification zone, and carbon layer burnout zone.
●The garbage enters primary combustion chamber through the sealed feeding, and the bottom of the grate is introduced with ultra-low ratio primary air (λ≤0.5), and the garbage in primary combustion chamber is partially burned (carbonized) and pyrolyzed (to produce combustible pyrolysis gas). The temperature of the pyrolysis gasification zone is 600-900°C, the air distribution coefficient is 0.2, and the residence time is 1.5 hours.
●The high-temperature gas produced in the pyrolysis gasification zone provides heat to the fresh garbage that has just entered to make it completely dry. The temperature in the preheating drying zone is 600℃, the air distribution coefficient is 0.1, and the garbage residence time is 0.5 hours. The dried solid waste is easily burned in the combustion zone and pyrolyzed and gasified. The solid residue after pyrolysis gasification stays in the carbon layer burn-out zone for a long time. The temperature in the carbon layer burn-out zone is 900-600℃. The air distribution coefficient is 0.15, and the residence time is 2 hours. All unburned solid residues are then completely burned and turned into ash, and then the ash is discharged to the ash conveyor installed under the furnace.
●At the same time, the combustible gas produced by the pyrolysis process filters out part of the dust in the upper settlement zone of the gasifier, and then enters the secondary combustion chamber to be further burned by the excess secondary combustion air. The combustion temperature of combustible gas in the secondary combustion chamber is 900-1100℃, the residence time of flue gas is more than 2 seconds, and the air distribution coefficient is about 0.6. This two-stage combustion minimizes the production of harmful substances in the flue gas. The unique feature of this technology is that it can realize the pyrolysis process without using auxiliary fuel, and separate combustion of the solid residue and the flue gas in a single system.
●The pyrolysis and gasification system is based on the characteristics of garbage, and realizes a two-stage treatment process for the first pyrolysis and gasification of the garbage and subsequent oxygen-enriched combustion, so that the garbage is completely burned, and after the treatment, the residue burning rate and leaching toxicity lower than national standard. This technology has a leading level in China and is a relatively safe and economical waste disposal technology.
●Since the pyrolysis gasification chamber (secondary chamber) burns gas and the excess air coefficient is small, the amount of flue gas generated by the pyrolysis method is less than that of the direct incineration method, especially the content of pollutants such as SOx, NOx, HCL, HF and heavy metal in the flue gas is less. It is conducive to the purification of flue gas, reducing the secondary pollution emissions and treatment costs.
●The pyrolysis gasification process is conducted under low oxygen and no oxygen conditions, which reduces the generation of dioxin precursors. The temperature in the second combustion chamber is up to 1100° C, and residence time of flue gas is more than 2 s, and the dioxins can be rapidly decomposed, thereby reducing the content of harmful substances such as heavy metals and dioxins in the fly ash discharged after garbage disposal, greatly reducing secondary pollution to the environment.
●The design of the pyrolysis gasifier is scientific and reasonable, the structure is simple and compact, easy to realize automatic control, light weight, easy to arrange, short construction period, low energy consumption and cost, small footprint, low investment, and obvious economic benefits.
Small And Medium-Sized Waste-To-Energy Stations
Pyrolysis Gasification Project Case
Video Display of Haiqi Waste Gasifier