Machine Parts

  Total cost of Hydrogen production: 1.       Capital 50% 2.       Feedstock 25 % 3.       Maintenance and Operations 25 %   Again we can break capital cost for various parts given bellow them: 1.       Balance of Power Plant is 25 % 2.       Air Separation is 20 % 3.       Gasifier is 20 % 4.       Separation and Reforming is 20 % 5.       Biomass feed handling is 15 % Main Purpose: 1.       Hydrogen separation, shift and biomass gas reforming new step find. 2.       By using high temperature H 2 selective membrane hydrogen separate from gasifier.     Various Methods of Separating Methane from the Product Gas   CHP IN COMBINATION WITH BIOMASS GASI...

By   membrane separation will not give any strict separation, but partial enrichment. This means that the content of methane in the produced gas may not be suitable for use as vehicle fuel directly. By applying cryogenic techniques, a very clean CH 4 can be achieved. This is favorable if the product should be used for vehicles. At the same time, also CO2 can be separated, which may be of high interest in possible future carbon capture and storage (CCS) plants. A drawback of cryogenic techniques is the equipment costs, which limits the use to large scale plants. The combination of gasification and CHP enables cleaning of the gas from problematic substances that are evaporated and passing with the gaseous phase such as chlorides and metal salts, such as alkali salts. It could facilitate the introduction of biomass and waste in today´s existing CHP plants using fossil fuel-based feed-stocks. Co-combustion with biomass and waste is generally not possible in...

The equations used in the physical simulation model of the gasifier are primarily stoichiometric calculations of how the biomass is converted through partial combustion. This will calculate adiabatic temperature and cooling through heat transfer and through transport of material from the gasifier and the heat exchangers in the exhaust gas train. The mass in the bed inventory by time is given from: inventory i,in i,out m / t = m - m where mi ,in is the mass input flow of each single component of the composition vector i= (C, H, O, N, CO2, H2O, NO2, ash) and mi, out is the corresponding output flow. The change in concentration of each component is given by ci in the bed inventory: where j are all incoming flows and k all out-going flows of the inventories. Except the bed inventory we also have one inventory for the steam system, gas cooling, filter and scrubber. The steam system has only water and steam components, while the others have the same components as t...