Modeling And Experimentation Of Throated Downdraft Gasifier Using Mango Seed Hull And Peanut Shell As A Feedstock For Syngas Production

Abstract

Downdraft Gasifiers Are Often Used To Produce Syngas With Very Little Tar And Impurities. However, Their Product Gas Quality And Performance Are Highly Affected By The Nature Of Biomass Used In The System. Because It Requires A Lot Of Time And Is Impractical To Evaluate The Performance Of A Gasification System Using All The Available Biomass Kinds Under Numerous Parameters, Fast And Quick Simulation Approaches With Well-Developed Mathematical Models Are Required For The Efficient And Economical Utilization Of Energy Resources. A Theoretical Analysis Was Carried Out Under Various Circumstances After Studying The Scientific Literature On This Subject. To Evaluate the System Performance of a Typical Biomass Gasifier, A Stoichio metric Equilibrium Model Was Created. Mango Seed Hull And Peanut Shell, Two Biomass Wastes That Were Readily Available Locally, Were Used For The Analyses. The Impact Of Several Parameters, Including Moisture Content, Equivalence Ratio, And Gasification Temperature On The Gasification System, Was Studied. The Methodology Used To Achieve This Study Was Based On The Predetermined Objectives. Along With The Model Evaluation, An Experimental Investigation Was Carried Out To Evaluate The System Performance Of A Throated Downdraft Biomass Gasifier Based On Variables Which Were Not Included In The Model, Such As Temperature Variation Over Time In The Gasifier, Gas Flame Intensity, The Quantity Of Condensate Particles, And Amount Of Char Left Over, For Additional Performance Investigation. The Exploitation Of Biomass In Size-Reduced And Densified Form, As Well As Two Air Supply Systems Employing Atmospheric And Pressured Air, Were Studied Experimentally In Gasifies. It Was Demonstrated That The Theoretical Analysis And The Experimental Results Were In Good Agreement. According To The Model Result, The System Using Mango Seed Hull Has A Lower Energy Efficiency Of 61.42 % Than A System Using Peanut Shell, Which Had An Energy Efficiency Of 64.69 %. For The Experimental Case, It Was Discovered That Gasification With Atmospheric Air Was Effective And Economical. The Temperature Distribution Along The Gasifier Has Been Impacted By The Size Of The Biomass. In Order to Produce Syngas Gas with Good Flame Characteristics Using Biomass Gasification, Both Feed stocks Are Found To Be Suitable Biomass Feed stocks. The Producer Gas Generated With Mango Seed Hull Has A Composition Of 30.29 % H2, 18.18 % Co, And 1.28 % Ch4 And The Calorific Value Was Determined To Be 6.02 Mj/M3. Similarly, The Producer Gas Generated With 9 Mm Peanut Shell Pellets Contained 27.41% H2, 20.39% Co, And 1.291% Ch4 And The Calorific Value Was Found To Be 5.47 Mj/M3.