The gasification efficiency can be raised by 10% and 25% and coal saved by 12% and 30% respectively with hybrid solar energy gasification units and entire solar energy gasification units.
Wood gasification in fluidized beds is most suitable at temperature of 600℃ and excess air ratio of 0.4.Under this condition,the efficiency of gasification is about 73%,LHV of syngas is about 5800 kJ/Nm~3 and its yield is about 2.01 Nm~3/kg. Then mechanisms of pyrolysis and gasification are proposed.
Carbon isotope discrimination (Δ) has been suggested as a selection criterion to improve transpiration efficiency (W) in bread wheat (Triticum aestivum L.).
This paper compares transpiration efficiency (TEc = shoot biomass corrected by seed oil-synthesis cost/ transpiration per unit vapour pressure deficit) of standard-height and semi-dwarf sunflower (Helianthus annuus L.) crops.
Genetic increases in water-use efficiency should also come from the manipulation of the crop canopy to reduce wasteful evaporation of water from the soil surface and from an improvement in transpiration efficiency.
Injection of a great amount of coal-powder in blast furnace for increasing the calorific power and output of top gas has been investigated. In the course of injecting, the calorific power of top gas was caculated by Rist operating diagram. The caculated results have shown that large amount of coal-powder injection in B. F. has many advantages, such as higher gasified efficiency of coal, less consumption of oxygen and there is no need for gas generator, etc. The calorific power increases from 800 kcal/m3 to ...
This article introduces principles and units of coal gasification by solar energy, particularly the hybrid solar energy gasification units and entire solar energy gasification units and the structures of two solar energy receivers in conception. The economy of coal gasification by solar energy is reviewed on the basis of productcost comparason between the solar energy gasifiers and Lurgi gasifiers. The gasification efficiency can be raised by 10% and 25% and coal saved by 12% and 30% respectively with hybri...
This paper studies problems about the gasification of solid fuel and sets up the equation of material batance and the dimen- sionless energy equation by using theorems of the heat mechanics and the heat chemistry, with the chemical dynamics, it also analyses the influence of the gasifica- tion medium on oroducts of transform and infers the rein - tional expression of oxygen quantity to the rate of transform and to the gasification efficiency for the imitating experiment of the computer.