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#adhar chemistry classes #coal #Rameshwarverma #rameshwar #chemistry #water #cement #ore #dolomite #types of coal #job #interview #ntpcjob #powerplantjob #coalindiajob #farmajob #gcv #proximate #ultimate coal analysis coal sampling coal preperation coal total Moisture GCV vm fc rule FSA,IS436,IS1350, SOP METHOD #COAL PREPRATION #COAL SAMPLING #COAL ANALYSIS #TYPES OF COAL #ANTHRASITE #BITUMINUS #SUB BITUMINUS #LIGNITE #PITE #FSA #is 436 is1350 _______________________________________________ Proximate & Ultimate Analysis of Coal / Moisture, Volatile Matter, Ash, Fixed Carbon in Coal [Hindi] Analysis of Coal X There are two methods: ultimate analysis and proximate analysis. The ultimate analysis determines all coal component elements, solid or gaseous and the proximate analysis deter mines only the fixed carbon, volatile matter, moisture and ash percentages. The ultimate analysis is determined in a properly equipped laboratory by a skilled chemist, while proxi mate analysis can be determined with a simple apparatus. It may be noted that proximate has no connection with the word "approximate". Measurement of Moisture Measurement of Volatile Matter Fresh sample of crushed coal is weighed, placed in a covered crucible, and heated in a furnace at 900 ± 15°C. For the methodologies including that for Determination of moisture is carried out by placing a sample of powdered raw coal of size 200 micron size in an uncovered crucible and it is placed in the oven kept at 108+2°C along with the lid. Then the sample is cooled to room temperature and weighed again. The loss in weight represents moisture.carbon and ash, refer to IS 1350 part 1:1984, part III, IV. The sample is cooled and weighed. Loss of weight represents moisture and volatile matter. The remainder is coke (fixed carbon and ash).volatile matter. The remainder is coke (fixed carbon and ash). Measurement of Carbon and Ash The cover from the crucible used in the last test is removed and the crucible is heated over the Bunsen burner until all the carbon is burned. The residue is weighed, which is the incombustible ash. The difference in weight from the previous weighing is the fixed carbon. In actual prac tice Fixed Carbon or FC derived by subtracting from 100 the value of moisture, volatile matter and ash. Proximate Analysis Proximate analysis indicates the percentage by weight of the Fixed Carbon, Volatiles, Ash, and Moisture Content in coal. The amounts of fixed carbon and volatile combustible matter directly Also Check Out These Playlist According to Your Interest Please Subscribe to our channel and help us Growing Boiler Knowledge (Steam Boiler & Power Plant)