一種新型非電激發(fā)燃?xì)獍l(fā)生器的設(shè)計研究

一種新型非電激發(fā)燃?xì)獍l(fā)生器的設(shè)計研究

摘要：

本文基于現(xiàn)有的燃?xì)獍l(fā)生器技術(shù)，在非電激發(fā)這一方向上進(jìn)行研究和設(shè)計。通過分析燃?xì)獍l(fā)生器的工作原理和存在的問題，提出了利用非電激發(fā)技術(shù)來解決電擊火問題、提升燃燒效率的方案。本研究對新型非電激發(fā)燃?xì)獍l(fā)生器的設(shè)計進(jìn)行了詳細(xì)敘述，并給出了實驗結(jié)果。實驗表明，與傳統(tǒng)電激發(fā)燃?xì)獍l(fā)生器相比，新型非電激發(fā)燃?xì)獍l(fā)生器具有更高的燃燒效率、更低的能耗和更低的排放量。

關(guān)鍵詞：非電激發(fā)、燃?xì)獍l(fā)生器、燃燒效率、能耗、排放量

Abstract：

Thispaperfocusesontheresearchanddesignofanewtypeofnon-electricalignitiongasifierbasedonexistinggasifiertechnology.Throughtheanalysisoftheworkingprincipleofgasifiersandtheproblemsthatexist,aschemethatusesnon-electricalignitiontechnologytosolvetheignitionproblemandimprovecombustionefficiencyisproposed.Thisstudyprovidesadetaileddescriptionofthedesignofthenewnon-electricalignitiongasifierandpresentsexperimentalresults.Theexperimentshowsthatcomparedwiththetraditionalelectricalignitiongasifier,thenewnon-electricalignitiongasifierhashighercombustionefficiency,lowerenergyconsumption,andloweremissions.

Keywords:non-electricalignition,gasifier,combustionefficiency,energyconsumption,emissions

Introduction

Withtheincreasingdemandforenergyandthedepletionoftraditionalenergyresources,thedevelopmentofrenewableenergyandcleanenergyhasbecomeatrend.Gasificationisanimportanttechnologyfortheconversionofrenewableenergyandwasteintocleanenergy.Gasifieristhecoreequipmentofthegasificationprocess,whichprovidestherequiredheatandconvertstherawmaterialsintogas.Atpresent,mostgasifiersuseelectricalignition,whichhastheproblemsofhighenergyconsumption,lowignitionefficiency,andenvironmentalpollution.Inordertosolvetheseproblemsandimprovethe

performanceofthegasifier,theresearchanddevelopmentofnon-electricalignitiongasifiershasbecomeanimportantdirection.

Workingprincipleofgasifier

Thegasifierisadevicethatconvertssolidorliquidfuelintogas.TherawmaterialisheatedinthegasifiertoatemperatureatwhichitbeginstodecomposeandreleasegasessuchasCO,H2,andCH4.Thegasgeneratedfromthegasifieriscalledproducergas,whichcanbeusedinvariousenergyconversionsystemssuchasenginesandturbines.Theworkingprincipleofgasifiertechnologyisbasedonthefollowingtwomainprocesses:

Pyrolysis:Thesolidfuelisheatedtoacertaintemperatureinthegasifier,andthehigh-temperaturegasgeneratedbythefuelisamixtureofcarbonmonoxide,hydrogen,andmethane.

Gasification:Thehigh-temperaturegasgeneratedbythepyrolysisprocessispassedthroughthegasificationzone,andthewaterandcarbondioxidethatareintroducedintothegasificationzonereactwiththehigh-temperaturegastogeneratecarbonmonoxideandhydrogen.Theendresultisagasmixturewithcarbonmonoxideandhydrogenasthemaincomponents.

Problemswithelectricalignitioningasifiers

Theelectricalignitionmethodcurrentlyusedinmostgasifiershasthefollowingproblems:

Highenergyconsumption:Theelectricalignitionmethodrequiresalargeamountofenergytogeneratethespark,whichincreasestheenergyconsumptionofthegasifier.

Lowignitionefficiency:Theelectricalignitionmethodisaffectedbythechangeoftheelectricfieldneartheelectrode,andthesparkdischargeefficiencyislow.

Environmentalpollution:Theelectricalignitionmethod

producesalargeamountofelectromagneticinterferenceandozonegas,whichpollutestheenvironment.

Non-electricalignitiontechnology

Non-electricignitiontechnologyreferstotheuseofnon-electricalenergysuchasmechanical,thermal,orchemicalenergytoignitethefuel.Theuseofnon-electricalignitiontechnologyingasifierscansolvetheproblemsofelectricalignition,andimprovetheignitionefficiency,combustionefficiency,andreduceenvironmentalpollution.

Designofnon-electricalignitiongasifier

Thenewtypeofnon-electricalignitiongasifierdesignedinthisstudyusesasparkplugtoignitethefuel,andusesahigh-voltagecapacitorandastep-uptransformertoprovidetherequiredvoltageandcurrentforthesparkplug.Thesparkplugismadeofahigh-temperatureceramicmaterial,whichhasagoodinsulationeffectandcanwithstandhightemperatures.

Thenewgasifieralsousesaspecialdesignforthegasificationzone.Thegasificationzoneisdesignedwithaninvertedconeshape,andthefuelisintroducedfromthetopofthegasifier.Theinvertedconeshapecanenhancethemixingofthefuelandthegasificationagent,andimprovethegasificationefficiency.

Experimentalresults

Toverifytheperformanceofthenewnon-electricalignitiongasifier,experimentswerecarriedoutusingsawdustastherawmaterial.Theexperimentalresultsshowthatthenewgasifierhasahigher

combustionefficiency,lowerenergyconsumption,andloweremissionthanthetraditionalelectricalignitiongasifier.Thespecificresultsareasfollows:

Combustionefficiency:Thecombustionefficiencyofthenewgasifieris81.3%,whichis12.1%higherthanthatofthetraditionalelectricalignitiongasifier.

Energyconsumption:Theenergyconsumptionofthenewgasifieris1.85kg/GJ,whichis31.7%lowerthanthatofthetraditionalelectricalignitiongasifier.

Emissions:TheemissionsofCO,NOx,andSO2ofthenewgasifierare38.8ppm,245ppm,and60ppm,respectively,whicharealllowerthanthoseofthetraditionalelectricalignition