METHOD OF PURIFICATION OF EXHAUST GASES FROM HYDROGEN FLUORIDE AND SILICON TETRAFLUORIDE

摘要

use: the production of extraction phosphoric acid, mineral fertilizers and feed phosphates. the essence of the u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0: u043eu0442u0445u043eu0434u00a0u0449u0438u0435 gases u043fu0440u0438u043cu0435u0441u00a0u043cu0438 hf and S1F4 washed water solution of sa (moz) 2 with the concentration of 5 - 10 mas.%. u0430u0434u0441u043eu0440u0431u0435u043du0442 u0432u044bu0432u043eu0434u00a0u0442 served in the form of slurry. u043eu0442u0444u0438u043bu044cu0442u0440u043eu0432u044bu0432u0430u044eu0442 solid phase. the solution is passed through a layer of crushed u0438u0437u0432u0435u0441u0442u043du00a0u043au0430.before the removals absorbent preferably heated to the temperature above the dew point u043eu0442u0445u043eu0434u00a0u0449u0438u0445 gases, for example, to 35 - 50 & deg;. the degree of purification of the gas from the f a 99.7%. 2 u0437.u043f.u0444 - lu, 1 table.