Raw materials: rice husk, straw, herb, film, coconut shell
Advantages: fixed carbon, reproducibile, high volatile, low SO2 emmission, zero CO2 emmision
Raw materials: rice husk, straw, herb, film, coconut shell
Main energy: biomass black carbon, biomass wood vinegar
Biomass gasification power plant: capacity from 200kw to 3000kw, 1kg woody biomass generate 1kw electricity, 1kw woody biomass produce 2-3m3/h syngas, syngas heat value 1100-1500kcal/m3.
Applicable raw materials: a wide range of raw materials, such as straw, wood chips, rice husk, palm shell, bagasse and other agricultural and forestry wastes
particle size: 30-50mm, water content: less than 20%
|Comparison of Grate Furnace Incineration Treatment Technology and Pyrolysis Gasification Treatment Technology|
|Compare Content||Grate Furnace||Pyrolysis Gasifier|
|Incineration Mechanism||The Garbage Is Directly Burned, The Combustion Temperature Is 800~1000°C, The Incineration Mechanism Is General||Using Two-Stage Treatment, The Garbage Is Now Pyrolyzed And Gasified, And Then Small-Molecule Combustible Gas Is Burned. The Combustion Temperature Is 850~1100℃. The Incineration Mechanism Is Advanced.|
|Furnace Structure And Grate Material||The Structure Is Complex And The Shape Is Large; The Grate Works Under High Temperature, And The Requirements For The Grate Material Are High||The Structure Is Relatively Simple And Compact; The Grate Works In A Low Temperature State, And The Requirements For The Grate Material Are Low|
|Types Of Garbage||Dispose Of Domestic Waste||It Can Process Domestic Waste, Industrial Waste, And Hazardous Waste With High Calorific Value (Including Medical Waste)|
|Area (300t/D)||40-50 Acres Higher||30-40 Acres Lower|
|Operating Cost Fly Ash Emissions||Fly Ash Discharges A Lot, Accounting For About 5% Of The Total Garbage||Fly Ash Emission Is Low, Accounting For About 1% Of The Total Garbage, Which Is Environmentally Friendly|
|Acidic Substance And Dust Emission||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 Acidic Substances Such As So2 And Nox Is Relatively Low: The Dust Emission Concentration Is ≤3000mg/Nm3|
|Plant Environment||It Is Difficult To Control The Environment In The Plant Area. The Incinerator Workshop Has A Certain Amount Of Bottom Ash And Leachate, Noise, And Odor Pollution.||The Factory Environment Is Well Controlled, And The Bottom Ash, Noise, And Odor Pollution In The Workshop Are Low|
What is a downdraft gasifier? 1.1 Downdraft gasifier. The downdraft gasifiers or cocurrent gasifiers are the most common type of gasifiers. In cocurrent gasifiers, biomass feedstock is fed from the top while air is passed downwards and producer gas leaves from the bottom of the gasifier. What is difference between updraft and downdraft gasifier?
1/6/2020 · Downdraft Gasifiers– The downdraft design is essentially the same as the updraft design except that feed and air move concurrently from top to bottom of the gasifier. Advantage of the downdraft fixed-bed gasifier is that the tars are cracked down in the oxidation zone, thus the producer gas has lower tar content compared to other types of gasifiers.
Fig. 3. Updraft gasifier 22 Fig. 4. Downdraft gasifier 23 Fig. 5. Crossdraft gasifier 24 Fig. 6. Applications of gasifier 27 Fig. 7. Top and bottom view of cover plate 29 Fig. 8. Isometric, top, front and side view of hopper 30 Fig. 9. Isometric, top, front and side view of gasification zone 31
There are three types of gasifiers Downdraft, Updraft and Crossdraft. Types Of Gasifiers The choice of one type of gasifier over other is dictated by the fuel, its final available form, its size, moisture content and ash content. therefore, the advantages and disadvantages generally found for various classes of gasifiers.
23/1/2014 · The updraft gasifier is a simple type of reactor for the gasification of biomass that is easy to operate and has high conversion efficiency, although it produces high levels of tar. This study attempts to observe the performance of a modified updraft gasifier. A modified updraft gasifier that recirculates the pyrolysis gases from drying zone back to the combustion zone and gas outlet at
Updraft Gasifier. The updraft gasifier, also called a counter-current gasifier, is a type of fixed bed gasifier which can use solid biomass having moisture content up to 60%, low volatile matter, and high ash content up to 25%. Some of the advantages of the updraft gasifier are as follows (Ayyadurai, Schoenmakers, and Hernandez 2017). 1. Good
30/4/2012 · In biomass gasification technology there are so many manufactures who are manfacturing gasifiers on different technology. different types of gasifiers like down draft or updraft & suction or pressure mode gasification are availalble in market. Any one can clear thar which is the better option of biomass gasification, updraft or down draft gasification.
Moisture 6.0 (wet basis) Table 6: Updraft Fixed Bed Gasifier Model C 48.7 Characteristics Based on Mandl et al.  H 6.2 Gasifier Geometry N 0.06 Column diameter (mm), D 125 Ash 0.4 Height of gasifier (mm), H 600 Particle diameter (mm), d1 10.1 Bed height (mm), Hb 420 Net calorific value (kJ/kg wet basis.) 17060 A total of 6 cases were simulated, as shown in The pressure-velocity coupling
Powered downdraft gasifier - E. K. Industries, Inc.Powered downdraft gasifier . United States Patent 4463687 . Abstract: A powered downdraft type combustion unit which substantial . Tel: +8615637015613. firstname.lastname@example.org. Home About Products . Biomass
Figure 1. Schematic of an updraft gasifier (Capareda, 2006). With a downdraft gasifier, air is introduced into a downward-flowing bed of fuel. Gas is collected from the bottom of the gasifier, and tarry oils are cracked and reduced to non-condensable gaseous products, unlike the updraft gasifier (Capareda, 2006). Downdraft gasifiers produce an
The fixed bed gasification systems are classified as updraft, Imbert downdraft, throatless downdraft, crossdraft and two stage gasifiers. Updraft gasifiers are suitable for gasification of biomass containing high ash (up to 15 %) and high moisture content (up to 50 %) and generate producer gas having high tar content (50–100 g/Nm3).
Downdraft Gasifier Engine Systems SERISP-271-3022 DE88001135 March 1988 UC Categoy.' 245 This handbook has been prepared by the Solar Energy Research Institute under the U.S. Department of Energy Solar Technical Informaion Program. It is intended as a gu
The flows of biomass and producer gases are counter-current for updraft and co-current for downdraft. The gasification reaction is comprised of four main reaction zones. Heat released during the
28/10/2020 · In a downdraft gasifier, based on the hot region temperature and residence time of tars, most of the tars are broken down. Therefore, the generated product gas in co-current or downdraft gasifier contains lower tar than updraft gasifier. Consequently, they are suitable to use in an internal combustion engine compared to the updraft gasifier gases.
4/6/2017 · Updraft gasifier as tars are converted into smaller molecular Updraft gasifier is suitable for the solid biomass which has high-moisture (up to 60%), high-ash (up to 25%) and low-volatile fuels such as charcoal and it is also called as a countercurrent gasifier. Updraft gasifier has some advantages over downdraft gasifiers