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|
Apr 01, 2007 · 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).
disadvantages for fixed bed gasifiers. 2.2 Different gasifying agents used in fixed bed Different gasifying agents used in fixed bed are shown in Table 2 2.3 The process of gasification Gasification is the conversion process of biomass to producer by heating in an oxidant or gasifying agents such as oxygen, air or steam. Because, the oxidant or
Exergy analysis of updraft and downdraft fixed bed Jan 01, 2021 · The fixed bed gasifier is a common technique for village-level solid waste gasification. The commonly used fixed
Pressurized fixed bed gasifier was chosen as relative high conversion efficiency in smaller scale. Wood chip is adoptable feedstock for updraft fixed bed gasifier. Considering using waste polymeric materials, adaptability to gasifier is a matter. Powders or fibrous materials, for example, are anticipated to cause some problems.
direction of flow of feedstock and air. Fixed bed updraft, fixed bed downdraft, circulating fluidized bed, bubbling fluidized bed, entrained flow and multi-stage gasifiers are being commonly used for different applications. Chapter 2 of the report gives details on the comparison between different types of gasifiers and
Overview of fixed bed biomass gasification: Typical composition of the producer gas from fixed bed gasifiers is: 40-50% N 2, 15-20% H 2, 10-15% CO, 10-15% CO 2 and 3-5% CH 4 [29, 73, 74, 83, 84]. Thus, the net calorific value of the gas is in the range 4-6 MJ/Nm 3. Nitrogen in the producer gas contributes considerably to the volume of the
In an updraft fixed bed gasifier (Figure 1), the flows of th. E-MAIL: firstname.lastname@example.org. TEL: 8615637015613. Home Products Biomass Gasifier Container Distributed Power Plant Semi-Gasification Biomass Burner . About Case News Electricity From Waste Ha
46 Journal of Advanced Thermal Science Research, 2016, 3, 46-57 Gasification of Biomass in an Updraft Fixed Bed Reactor: Effect of Viscous Models F. J. Alarcón-Gaete and J. C. Elicer-Cortés* Departamento De Ingeniería Mecánica, Universidad De Chile, Beauchef 851, Santiago, Chile Abstract: A numerical study to investigate the influence of viscous models in the biomass gasification in an
Top-lit updraft (TLUD) biomass gasifiers produce relatively high yields of biochar when compared to other gasification units such as fluidized bed, downdraft, and updraft gasifiers (Nsamba et al. 2014). A top-lit updraft gasifier is a batch gasifier that is known to be ignited on the top layer of the biomass. Because of the flow of the biomass and the gasifying agent, it is also known as an
1/1/2010 · A modified updraft fixed bed gasifier with embedded combustor is successfully applied to an STM Stirling engine for power generation in the current study. Scratched construction wood is used as the biomass feedstock to test the current design. The modified fixed bed gasifier with embedded combustor is capable of converting solid biomass feedstock into high temperature flue gas with low
The Technical Research Centre of Finland and Bioneer Oy have developed the Bioneer updraft fixed-bed gasifier for peat and biomass. The use of low-Btu gas has reached a commercial level, and there are ten operative gasifiers in Finland and Sweden. The thermal output of these unitsranges 2–6 MW. Recent development work has focused on gasifying low-grade fuels, such as different wood wastes
Technologies - Gasification. Fixed-Bed Gasifiers. The most successful of the fixed-bed designs is the updraft gasifier, in which the biomass is fed from the top of the gasifier and successively undergoes drying, pyrolysis, char gasification, and char combustion as it settles to the bottom of the gasifier. The product gas is removed from the top
The system consisted of three subsystems: (1) an updraft biomass gasifier; (2) a tar reforming unit; and (3) a tar collection unit. The gasification system provided an overall air flow rate of 0.14 to 1.42 m 3 /min depending on the voltage of the 15-W blower (Delibang, Zhejiang, China).
gasification while the large scale gasifiers are usually with fluidized-bed or of entrained–flow type. Slow-moving (“fixed”) bed, updraft and downdraft gasifiers are, in general, with rather simple construction and operation that avoid excessive costs (Purnumo et all, 1990). In an updraft gasifier the downward-moving biomass
Gasifier Type: Updraft Fixed Bed Gasifier: Biomass Moisture Requirement: ≤20~35%（wet basis） Biomass Size Requirment: Diameter 20mm-80mm;Length 10-80mm; Biomass Consumption(Kg/hr) 50-100: 100-200 : 200-400 : 300-600 : 400-800 : 500-1000 : 600-1200 : 800-1600 : 1000-2000: 1200-2400 : 1500-3000 : 2000-4000 : Gas Production(Nm 3 /h) 125-150