Hi I would like to ask the community if we can set up a post for a new energy system I have been working on ,I think it works out more efficient and ecologically better , and its large scale thinking for energy systems , and now I need to check through my figures and need the views of IET thinkers for instance on combustion , post combustion chemistry , it unfolds into quite a complex system which I have been working on for 8 years , but enables us to get more energy from wastes and perhaps helps to move to biomaterials. I have an interest as environmental thinker and have designed the system to go through to government funding phases and pretty confident it works well in a number of questions around energy and environmental thinking .
Ok then lets have a think about fuel availability , so if we can co fire at say 40% CH4 and 60% solid fuels (comprised of 20% Bio mass 20% Bio solids and 20% RDF ) as an approximation for a 500MW 80% boiler as follows.(values at NPT)
CH4 62800m3 per hr using 125600m3 of O2 (154,000kg) giving 62800m3 of CO2 (34000kg) and 94577 kg of H2O
Bio Mass at 76600kg hr using 76600m3 of O2 giving 127000kg of CO2 and 48488kg of H2O
Bio solids at 175000kg/hr using 210000m3 of O2 giving 166000kg of CO2 and 123550 kg of H2O
RDF at 81600kg/hr using 97800 m3 of O2 giving 122400kg of CO2 and 51650 kg of H2O
giving a total o2 requirement of around 510000m3 hr (678800kg)
giving a total CO2 of around 450000 kg (244000m3)
giving a total water of 318000kg (318m3 )
In reality fuel availability may vary , bio solids is pretty regular (excuse the pun ) as should RDF with the right fuel processing systems throughout the country , Biomass is perhaps the more variable probably getting more during summer when construction industry is going strong , but more interesting availability would be if we use it as building material more and then in 50-100yrs we start to get more regular biomass coming through and as a carbon store biomass would be sequestering CO2 giving both a safe and useful carbon capture system over a long time span .The O2 use figure may be high but its the amount of non carbon atom that we make into oxides , mainly nitrogen and sulphur which are difficult to determine ,the High O2/CH4 combustion temperatures will greatly aid thermal decomposition enabling the furans and benzenes to be decomposed to simpler molicules.
Ok then lets have a think about fuel availability , so if we can co fire at say 40% CH4 and 60% solid fuels (comprised of 20% Bio mass 20% Bio solids and 20% RDF ) as an approximation for a 500MW 80% boiler as follows.(values at NPT)
CH4 62800m3 per hr using 125600m3 of O2 (154,000kg) giving 62800m3 of CO2 (34000kg) and 94577 kg of H2O
Bio Mass at 76600kg hr using 76600m3 of O2 giving 127000kg of CO2 and 48488kg of H2O
Bio solids at 175000kg/hr using 210000m3 of O2 giving 166000kg of CO2 and 123550 kg of H2O
RDF at 81600kg/hr using 97800 m3 of O2 giving 122400kg of CO2 and 51650 kg of H2O
giving a total o2 requirement of around 510000m3 hr (678800kg)
giving a total CO2 of around 450000 kg (244000m3)
giving a total water of 318000kg (318m3 )
In reality fuel availability may vary , bio solids is pretty regular (excuse the pun ) as should RDF with the right fuel processing systems throughout the country , Biomass is perhaps the more variable probably getting more during summer when construction industry is going strong , but more interesting availability would be if we use it as building material more and then in 50-100yrs we start to get more regular biomass coming through and as a carbon store biomass would be sequestering CO2 giving both a safe and useful carbon capture system over a long time span .The O2 use figure may be high but its the amount of non carbon atom that we make into oxides , mainly nitrogen and sulphur which are difficult to determine ,the High O2/CH4 combustion temperatures will greatly aid thermal decomposition enabling the furans and benzenes to be decomposed to simpler molicules.
