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Energy Consumption And Influencing Factors By Gasification Of Organic Carbon

Posted on:2015-11-07Degree:MasterType:Thesis
Country:ChinaCandidate:D ZhangFull Text:PDF
GTID:2271330452967933Subject:Heating, Gas Supply, Ventilation and Air Conditioning Engineering
Abstract/Summary:PDF Full Text Request
Our country is rich in coal and biomass resource, which has many species andcomplex structure. Nowadays, coal and biomass are used mainly in direct combustion,leading to low utilization efficiency, while coal result in serious environment pollution.So how to use coal and biomass efficiently and cleanly becomes more and moresignificant. Hydrogen is a kind of high, storable, transportable and sustainable cleanenergy, which will be secondary and complementary renewable energy in the futureenergy system. Converting coal and biomass into hydrogen energy has a positive effectin environmental protection,energy conservation and sustainable development of human,which has made in important contributions for our country’s energy security andeconomic development.Firstly,coal gasification reaction procession was established in conventional andSupercritical conditions of two different.Drying process, heating process, thecompression process and process of gasification in coal gasification system areresearched by energy analysis and exergy analysis. Then the moisture content of thecoal conventional gasification system was researched; finally this paper discussed theimpact of raw material components of biomass gasification process in supercriticalwater.In this paper, it shows gasification of coal in supercritical water of energyefficiency and exergy efficiency with two aspects are superior to conventional coalgasification system. The temperature of the drying process is great impact inconventional coal gasification system;biomass species have a greater impact on the H/Cof gasification products of biomass in supercritical water,the H/C of gasification products of original biomass in supercritical water and the corresponding the H/C oforiginal biomass is a certain number of relationship,temperature has different effects onthe H/C of gasification products of original biomass in supercritical waterfor originalbiomass and wastewater.In this paper, the energy process of coal gasification hydrogen and biomassgasification in supercritical water’s factors were carried out, which reveals the mainenergy consumption process of the coal gasification efficiency and and the componentsof the biomass in supercritical water for impact of gasification production.This paperhas provided theoretical support for the development and application of gasification ofbiomass in supercritical water,.
Keywords/Search Tags:coal, biomass, Hydrogen production, efficiency
PDF Full Text Request
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