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返回 2021.02.11 来源:http://www.huannengpower.com
2沼气利用方案对比分析
    Comparisonandanalysisof2biogasutilizationschemes
    4个方案的对比分析见表1。由表1可知,4种方案总收益相差不大,其中,方案1及方案2前期建设工程投入及运行维护费用较小,收益较大;方案3前期建设工程费用更小,且不存在运行维护成本,收益,但该方案存在较大安全隐患;方案4由于前期建设工程投入及运行维护成本高,虽然其收入为4个方案,但收益与前3个方案差别不大。    ThecomparativeanalysisofthefourschemesisshowninTable1.Itcanbeseenfromtable1thatthereislittledifferenceinthetotalbenefitsofthefourschemes.Amongthem,theinvestmentandoperationandmaintenancecostsofscheme1andscheme2arerelativelysmall,andthebenefitsarerelativelylarge;scheme3hastheminimumconstructioncosts,andthereisnooperationandmaintenancecosts,andthebenefitsarethelargest,buttherearerelativelylargepotentialsafetyhazardsinthescheme;scheme4hashighinvestmentandoperationandmaintenancecosts,althoughtheincomeisrelativelylowTheincomeofthefourschemesisthehighest,butthereislittledifferencebetweenthem.
    4种沼气发电方案优缺点
    Advantagesanddisadvantagesoffourbiogaspowergenerationschemes
    3结论
    3conclusion
    方案1:沼气经沼气燃烧器回炉燃烧可回收沼气热量,增加了整厂的收益,且运行稳定、可靠。方案2:沼气经回喷枪回炉燃烧收益相当于方案1,但当焚烧炉燃烧工况不稳定时,沼气可能有点火燃烧不及时风险。方案3:将沼气抽送至垃圾坑经济性能更好,但综合考虑垃圾本身产生的沼气及被抽回的沼气,沼气浓度太高,且不易控制,增加了爆炸事故发生的可能性,故方案3存在安全隐患。方案4:沼气热利用效率,但设备、建设费用较高,且该方案沼气须经过预处理,系统复杂,故障率较高。此外,上网发电需要增加升压装置,并派专人维护,人力及维护成本较高。由此可见,生活垃圾焚烧发电厂渗沥液处理产生的沼气,采用通过沼气燃烧器回喷入炉焚烧的利用方案。   Scheme1:theheatofbiogascanberecoveredbyreturningthebiogasburnertothefurnace,increasingtheincomeofthewholeplant,andtheoperationisstableandreliable.Scheme2:thebenefitofbiogasreturningtothefurnacethroughthereturnlanceisequivalenttoscheme1,butwhenthecombustionconditionoftheincineratorisunstable,theremaybetheriskofdelayedignitionandcombustionofbiogas.Scheme3:theeconomicperformanceofpumpingbiogastothegarbagepitisthebest,butconsideringthebiogasproducedbythegarbageitselfandthebiogaspumpedback,theconcentrationofbiogasistoohighanddifficulttocontrol,whichincreasesthepossibilityofexplosionaccidents,soscheme3haspotentialsafetyhazards.Scheme4:thebiogasheatutilizationefficiencyisthehighest,buttheequipmentandconstructioncostsarehigh,andthebiogasinthisschememustbepretreated,sothesystemiscomplexandthefailurerateishigh.Inaddition,thegridpowergenerationneedstoincreasetheboosterdevice,andsendspecialpersonneltomaintain,sothecostofmanpowerandmaintenanceishigh.Itcanbeseenthatthebiogasproducedbyleachatetreatmentindomesticwasteincinerationpowerplantisbesttobeinjectedintothefurnacethroughbiogas
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优缺点分析

2沼气利用方案对比分析
    Comparisonandanalysisof2biogasutilizationschemes
    4个方案的对比分析见表1。由表1可知,4种方案总收益相差不大,其中,方案1及方案2前期建设工程投入及运行维护费用较小,收益较大;方案3前期建设工程费用更小,且不存在运行维护成本,收益,但该方案存在较大安全隐患;方案4由于前期建设工程投入及运行维护成本高,虽然其收入为4个方案,但收益与前3个方案差别不大。    ThecomparativeanalysisofthefourschemesisshowninTable1.Itcanbeseenfromtable1thatthereislittledifferenceinthetotalbenefitsofthefourschemes.Amongthem,theinvestmentandoperationandmaintenancecostsofscheme1andscheme2arerelativelysmall,andthebenefitsarerelativelylarge;scheme3hastheminimumconstructioncosts,andthereisnooperationandmaintenancecosts,andthebenefitsarethelargest,buttherearerelativelylargepotentialsafetyhazardsinthescheme;scheme4hashighinvestmentandoperationandmaintenancecosts,althoughtheincomeisrelativelylowTheincomeofthefourschemesisthehighest,butthereislittledifferencebetweenthem.
    4种沼气发电方案优缺点
    Advantagesanddisadvantagesoffourbiogaspowergenerationschemes
    3结论
    3conclusion
    方案1:沼气经沼气燃烧器回炉燃烧可回收沼气热量,增加了整厂的收益,且运行稳定、可靠。方案2:沼气经回喷枪回炉燃烧收益相当于方案1,但当焚烧炉燃烧工况不稳定时,沼气可能有点火燃烧不及时风险。方案3:将沼气抽送至垃圾坑经济性能更好,但综合考虑垃圾本身产生的沼气及被抽回的沼气,沼气浓度太高,且不易控制,增加了爆炸事故发生的可能性,故方案3存在安全隐患。方案4:沼气热利用效率,但设备、建设费用较高,且该方案沼气须经过预处理,系统复杂,故障率较高。此外,上网发电需要增加升压装置,并派专人维护,人力及维护成本较高。由此可见,生活垃圾焚烧发电厂渗沥液处理产生的沼气,采用通过沼气燃烧器回喷入炉焚烧的利用方案。   Scheme1:theheatofbiogascanberecoveredbyreturningthebiogasburnertothefurnace,increasingtheincomeofthewholeplant,andtheoperationisstableandreliable.Scheme2:thebenefitofbiogasreturningtothefurnacethroughthereturnlanceisequivalenttoscheme1,butwhenthecombustionconditionoftheincineratorisunstable,theremaybetheriskofdelayedignitionandcombustionofbiogas.Scheme3:theeconomicperformanceofpumpingbiogastothegarbagepitisthebest,butconsideringthebiogasproducedbythegarbageitselfandthebiogaspumpedback,theconcentrationofbiogasistoohighanddifficulttocontrol,whichincreasesthepossibilityofexplosionaccidents,soscheme3haspotentialsafetyhazards.Scheme4:thebiogasheatutilizationefficiencyisthehighest,buttheequipmentandconstructioncostsarehigh,andthebiogasinthisschememustbepretreated,sothesystemiscomplexandthefailurerateishigh.Inaddition,thegridpowergenerationneedstoincreasetheboosterdevice,andsendspecialpersonneltomaintain,sothecostofmanpowerandmaintenanceishigh.Itcanbeseenthatthebiogasproducedbyleachatetreatmentindomesticwasteincinerationpowerplantisbesttobeinjectedintothefurnacethroughbiogas