The nitrogen enters dry and leaves the dryer with 0 lbīenzene per pound of N2. Quantities of the residual acid and the concentrated acids to beĮmployed to obtain 1000 lb of the desired blend.Ī benzene-impregnated filter material containing 20% benzene andĨ0% of inerts is dried in a countercurrent flow dryer, using hot It is intended toĬoncentrate this acid to contain 27% w/w HNO3 and 60% w/w H2SO4,Īdding concentrated sulfuric acid, containing 93% w/w H2SO4 andĬoncentrated nitric acid containing 90% w/w of HNO3. The residual acid from a nitration process contains 23% w/w HNO3,ĥ7% w/w H2SO4 and 20% w/w H2O by weight. If it is desired to concentrate the saline solution to 7% w/w,Ĭalculate the amount of sea water required for each kilogram of ice Partial freezing of it, with the formation of pure ice and a moreĬoncentrated salt solution. One of the processes of obtaining fresh water from sea water is by
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