Chinese government has initiated many preferential policies for supporting the circular economy, including the industry of municipal solid waste （MSW） power generation. This paper collects relevant policies for Chin...Chinese government has initiated many preferential policies for supporting the circular economy, including the industry of municipal solid waste （MSW） power generation. This paper collects relevant policies for China＇s MSW power generation. It also analyzes the overall environment of policies for the MSW power generation from three aspects---the basic principles for China to develop MSW power generation, the operating mechanism and the specific preferential policies. The analysis establishes foundation for further research toward policy integration.展开更多
In recent years,relevant government departments have achieved the goal of reduction and harmless application through the development and implementation of municipal waste incineration power plants,in order to advocate...In recent years,relevant government departments have achieved the goal of reduction and harmless application through the development and implementation of municipal waste incineration power plants,in order to advocate ecological and environmental protection.At present,in order to further achieve the goal of sustainable development,municipal waste incineration power plants have actively responded to the national call and requirements as well as made overall arrangements for the energy-saving design and optimization design of their internal system.Therefore,with the concept of sustainable development,this paper studies and analyzes the problems of the HVAC design as well as suggests related strategies for municipal waste incineration power plants in order to provide relevant reference.展开更多
Numan is an urban center in Adamawa State North-Eastern Nigeria. Its waste characteristics are similar to other places in sub-Saharan Africa. In this paper, the physico-chemical characterization of municipal solid was...Numan is an urban center in Adamawa State North-Eastern Nigeria. Its waste characteristics are similar to other places in sub-Saharan Africa. In this paper, the physico-chemical characterization of municipal solid waste generated in Numan Town was carried out to estimate the electrical power to be generated from it. The solid waste types were observed to comprise of polythene (27%), organic waste (24.1%), plastic (10.2%), textile (13.2%), paper (9.8%), glass (9.3%) and metals (6.4%). The moisture content as discarded and daily average solid waste generation rate are 16.49% and 0.583 kg/sec respectively. The chemical formula with and without water was determined as C923.28H1632.60O258.28N12.89S and C923.28H2099.70O494.16N12.89S respectively. The suitability of the municipal solid waste as a possible source of electrical power was also considered. The energy content of the solid waste on ash free dry-basis was determined as 20861.48 kJ/kg. The estimated power generation per day using incinerating plant at an assumed efficiency of 25% was 3031.5 kW.展开更多
Municipal solid waste(MSW)is a carbon–neutral energy source and possesses a moderate heating value;hence,it can be used as an alternative fuel for coal.To use high ash and high sulfur Indian coals efficiently,a techn...Municipal solid waste(MSW)is a carbon–neutral energy source and possesses a moderate heating value;hence,it can be used as an alternative fuel for coal.To use high ash and high sulfur Indian coals efficiently,a techno economic analysis is performed for electricity generation using supercritical and subcritical based steam turbines operating in the oxy-fuel co-combustion mode of MSW with Indian coals.The impact of the capture of direct and indirect greenhouse gasses such as CO_(2),NO_(x)and SO_(x)on the net thermal efficiency of the power plants is assessed.The supercritical based steam turbine achieved a higher net thermal efficiency by 8.8%using MSW based feedstock compared to sub-critical conditions.The co-combustion mode reduced the levelized cost of electricity(LCOE)by 48–73$/MWh.Techno-economic analysis for sulfur removal in coal using ultrasonication technology has not yet been reported in the literature.The incorporation of an ultrasonicator(a pre-combustion sulfur remover)and a duct sorbent injector(a post-combustion SO_(x)absorber)increased the LCOE by 1.39–2.75$/MWh.In high sulfur coals,the SO_(x)emissions decreased from 224.79 mg/m^(3)to 9.2 mg/m^(3).展开更多
In this study,a model of combined cooling,heating and power system with municipal solid waste(MSW)and liquefied natural gas(LNG)as energy sources was proposed and developed based on the energy demand of a large commun...In this study,a model of combined cooling,heating and power system with municipal solid waste(MSW)and liquefied natural gas(LNG)as energy sources was proposed and developed based on the energy demand of a large community,andMSW was classified and utilized.The systemoperated by determining power by heating load,and measures were taken to reduce operating costs by purchasing and selling LNG,natural gas(NG),cooling,heating,and power.Based on this system model,three operation strategies were proposed based on whether MSW was classified and the length of kitchen waste fermentation time,and each strategy was simulated hourly throughout the year.The results showed that the strategy of MSW classified and centralized fermentation of kitchen waste in summer(i.e.,strategy 3)required the least total amount of LNG for the whole year,which was 47701.77 t.In terms of total annual cost expenditure,strategy 3 had the best overall economy,with the lowest total annual expenditure of 2.7730×108 RMB at LNG and NG unit prices of 4 and 4.2 RMB/kg,respectively.The lower heating value of biogas produced by fermentation of kitchen waste from MSW being classified was higher than that of MSW before being classified,so the average annual thermal economy of the operating strategy of MSW being classified was better than that of MSW not being classified.Among the strategies in which MSW was classified and utilized,strategy 3 could better meet the load demand of users in the corresponding season,and thus this strategy had better thermal economy than the strategy of year-round fermentation of kitchen waste(i.e.,strategy 2).The hourly analysis data showed that the net electrical efficiency of the system varies in the same trend as the cooling,heating and power loads in all seasons,while the relationship between the energy utilization efficiency and load varied from season to season.This study can provide guidance for the practical application of MSW being classified in the system.展开更多
文摘Chinese government has initiated many preferential policies for supporting the circular economy, including the industry of municipal solid waste （MSW） power generation. This paper collects relevant policies for China＇s MSW power generation. It also analyzes the overall environment of policies for the MSW power generation from three aspects---the basic principles for China to develop MSW power generation, the operating mechanism and the specific preferential policies. The analysis establishes foundation for further research toward policy integration.
文摘In recent years,relevant government departments have achieved the goal of reduction and harmless application through the development and implementation of municipal waste incineration power plants,in order to advocate ecological and environmental protection.At present,in order to further achieve the goal of sustainable development,municipal waste incineration power plants have actively responded to the national call and requirements as well as made overall arrangements for the energy-saving design and optimization design of their internal system.Therefore,with the concept of sustainable development,this paper studies and analyzes the problems of the HVAC design as well as suggests related strategies for municipal waste incineration power plants in order to provide relevant reference.
文摘Numan is an urban center in Adamawa State North-Eastern Nigeria. Its waste characteristics are similar to other places in sub-Saharan Africa. In this paper, the physico-chemical characterization of municipal solid waste generated in Numan Town was carried out to estimate the electrical power to be generated from it. The solid waste types were observed to comprise of polythene (27%), organic waste (24.1%), plastic (10.2%), textile (13.2%), paper (9.8%), glass (9.3%) and metals (6.4%). The moisture content as discarded and daily average solid waste generation rate are 16.49% and 0.583 kg/sec respectively. The chemical formula with and without water was determined as C923.28H1632.60O258.28N12.89S and C923.28H2099.70O494.16N12.89S respectively. The suitability of the municipal solid waste as a possible source of electrical power was also considered. The energy content of the solid waste on ash free dry-basis was determined as 20861.48 kJ/kg. The estimated power generation per day using incinerating plant at an assumed efficiency of 25% was 3031.5 kW.
文摘Municipal solid waste(MSW)is a carbon–neutral energy source and possesses a moderate heating value;hence,it can be used as an alternative fuel for coal.To use high ash and high sulfur Indian coals efficiently,a techno economic analysis is performed for electricity generation using supercritical and subcritical based steam turbines operating in the oxy-fuel co-combustion mode of MSW with Indian coals.The impact of the capture of direct and indirect greenhouse gasses such as CO_(2),NO_(x)and SO_(x)on the net thermal efficiency of the power plants is assessed.The supercritical based steam turbine achieved a higher net thermal efficiency by 8.8%using MSW based feedstock compared to sub-critical conditions.The co-combustion mode reduced the levelized cost of electricity(LCOE)by 48–73$/MWh.Techno-economic analysis for sulfur removal in coal using ultrasonication technology has not yet been reported in the literature.The incorporation of an ultrasonicator(a pre-combustion sulfur remover)and a duct sorbent injector(a post-combustion SO_(x)absorber)increased the LCOE by 1.39–2.75$/MWh.In high sulfur coals,the SO_(x)emissions decreased from 224.79 mg/m^(3)to 9.2 mg/m^(3).
基金support provided by the Nature Science Foundation of Shandong Province(ZR201709180049)the Shandong Key Research and Development Program(2019GSF109023).
文摘In this study,a model of combined cooling,heating and power system with municipal solid waste(MSW)and liquefied natural gas(LNG)as energy sources was proposed and developed based on the energy demand of a large community,andMSW was classified and utilized.The systemoperated by determining power by heating load,and measures were taken to reduce operating costs by purchasing and selling LNG,natural gas(NG),cooling,heating,and power.Based on this system model,three operation strategies were proposed based on whether MSW was classified and the length of kitchen waste fermentation time,and each strategy was simulated hourly throughout the year.The results showed that the strategy of MSW classified and centralized fermentation of kitchen waste in summer(i.e.,strategy 3)required the least total amount of LNG for the whole year,which was 47701.77 t.In terms of total annual cost expenditure,strategy 3 had the best overall economy,with the lowest total annual expenditure of 2.7730×108 RMB at LNG and NG unit prices of 4 and 4.2 RMB/kg,respectively.The lower heating value of biogas produced by fermentation of kitchen waste from MSW being classified was higher than that of MSW before being classified,so the average annual thermal economy of the operating strategy of MSW being classified was better than that of MSW not being classified.Among the strategies in which MSW was classified and utilized,strategy 3 could better meet the load demand of users in the corresponding season,and thus this strategy had better thermal economy than the strategy of year-round fermentation of kitchen waste(i.e.,strategy 2).The hourly analysis data showed that the net electrical efficiency of the system varies in the same trend as the cooling,heating and power loads in all seasons,while the relationship between the energy utilization efficiency and load varied from season to season.This study can provide guidance for the practical application of MSW being classified in the system.
