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BG50795A1
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Switching valve
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BG50633A1
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Device for mass exchange processes in liquid systems
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BG51078A1
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Sprinkler for distributing the liquid phase over the section of columns with filling
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BG49465A1
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Method for water heating for every- day centralized heating system
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BG48108A1
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Transporting chute for sprinkling device for columns with fillers
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BG47679A1
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Element for redistribution of liquid
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BG47678A1
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Device for forming liquid in apparatus with vertical flatparallel filter for performing heat mass- exchange processes
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BG47552A1
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Method for extracting of metals from chloride solutions
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BG49412A1
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Device for mass- and thermotransfer between three phases
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BG48593A2
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Adsorber- desorber
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BG52088B2
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Method for catalytic of sulphur dioxide
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BG47451A1
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Thermochemical drying installation
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BG47450A1
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Method and device for recurculation drying in coaxial rotary fluidized layer
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