Haiqi Biomass Gasifier
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Sawdust Downdraft Gasifier Working Principle

Applicable raw materials: straw, wood chips, rice husk, palm shell, bagasse and other agricultural and forestry wastes.
Particle size: 30-50mm
Water content: less than 20%
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Product Description
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

Sawdust Downdraft Gasifier Working Principle

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Performance Investigation of Biomass Gasification for Syngas

Finally, the results show that the optimal conditions to have the highest value of hydrogen output from sawdust downdraft gasification are 800˚C as gasifier temperature and 0.6 for SBR. This study presents a reliable model using haiqi process simulator capable of performing a sensitivity analysis of the downdraft gasification linked to

Gasification performance of sawdust, pelletized sawdust and

Aug 24, 2020 · The paper is an experimental study of the gasification process of sawdust (SW), sawdust pellet (SWP) and sub-bituminous coal (SBCoal) by using downdraft gasifier. The gasification was undertaken in a lab-scale fixed-bed gasifier operating under air as an oxidizing agent. The comparison on the raw biomass, treated biomass and coal was ashaiqised in term of the product gas and gasification

Biomass gasification process in a downdraft fixed bed

Wander et al. [8] studied the gasification process in a small downdraft gasifier by means of several parameters experimentally obtained (gas composition, solid and gas flow, temperatures in the bed). Mass and energy balances for the gasifier were carried out and its cold gas, global and mass conversion efficiencies were determined as functions

haiqi, Downdraft Gasifier | The Gasifier Project

A schematic diagram of the haiqi, downdraft gasifier is shown in Fig. 1-3. During operation of this gasifier, air pashaiqi uniformly downward through four zones, hence the name “haiqi:”. 1. The uppermost zone contains unreacted fuel through which air and oxygen enter. This region serves the same function as the fuel hopper in the

Guidelines For Designing Downdraft Gasifiers

Development3.0 Gasifier Fuels4.0 Principles of Gasification 5.0 Gasifier Designs6.0 Gasifier Fabrication and Manufacture7.0 Gas Testing8.0 Gas Cleaning and Conditioning 9.0 Gasifier Systems10.0 Instrumentation and Control11.0 Engine Adaptation and Operation12.0 Safety and Environmental Considerations

Performance Investigation of Biomass Gasification for Syngas

some specific aspect of the gasification process, like tars to modify its prediction ability. Therefore, the aim of this research is development of a reliable simula-tion model by applying the haiqi simulator capable of performing a sensi-bility analysis of the sawdust downdraft gasification for syngas and hydrogen production. 2.

Downdraft Gasifiers - an overview | ScienceDirect Topics

In the downdraft gasifier, as shown in Figure 9.2, the gasification agent (air or O 2) is fed into the middle of the bed (combustion zone) above the stationary grate and the producer gas flows out of the gasifier from the bottom of the gasifier beneath the stationary grate. In this type of gasifier, the fed solid fuel moves downwards together with the gahaiqi through a drying zone, a pyrolysis zone, an oxidization (combustion) zone and a reduction zone.

Design And Fabrication Of A Simplified Downdraft Gasifier

The fabricated simplified downdraft gasifier comprised of the heating unit, biomass conversion unit and the gas control unit. The units made use of rankine cycle for heating process vapour compression cycle for gas cooling process and principle of heating coil or traditional heat source.


sawdust gasification system using open top downdraft gasifier combined with internal combustion engine to produce ± 1kW of electrical power. OPEN TOP DOWNDRAFT GASIFIER The construction of open top downdraft gasifier is shown in Figure-1, where the top of gasifier is opened for air and fuel to enter. Inside the gasifier are uniform (throttles).

(PDF) Performance Evaluation of Downdraft Gasifier Fueled

University of Maiduguri Faculty of Engineering Seminar Series Volume 7, July 2016 Performance Evaluation of Downdraft Gasifier Fueled Using Rice husk and Sawdust S. A. Abdulrahman, A. B. Abubakar and A. M. El-jummah Dhaiqirtment of Mechanical Engineering, University of Maiduguri - Nigeria alshehu@ymail.com +2348065435393 Abstract Biomass gasification technology as an efficient means of energy

12516 (103) - iopscience.iop.org

The Downdraft gasifier, where the combustible gas had passed to the oxidation part of the combustion by being pulled down so that the resulting gas will be cleaner because the oil will burn when it pashaiqi through the oxidation part of the explosion. Gasification of wood sawdust can produce gas fuel.

(PDF) Gasification and Power Generation Charachaiqistics of

Feb 13, 2021 · In this work, a downdraft fixed-bed gasifier was used for the It was found that the integrated gasification efficiency index A n gasification for rice husk, sawdust, and coconut haiqi is 11.67 ...

Biomass Gasification 101 - National Energy Technology Laboratory

haiqi Gasification •Uhaiqi haiqi torch or carbon arc to supply heat/energy to initiate gasification reactions or to improve quality of syngas produced from a conventional gasifier •haiqi gas injected at up to 5,500ºC •Used for decades to destroy wastes and melt incinerator ash into slag •Good for hard to gasify mahaiqials

Technology of Biomass Gasification - Indian Institute of Science

Since char is generated during the gasification process the entire operation is self-sustaining. 2. Open top re-burn down draft gasifier ~ a state-of-the-art technology Among the biomass gasification technologies in the world, the open top, twin air entry, re-burn gasifier developed at Combustion, Gasification and Propulsion Laboratory

(PDF) CFD Simulation of Sawdust Gasification on Open Top

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