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¿µÁøÄÚÆÛ·¹ÀÌ¼Ç Á¾ÇÕÄ«´Ù·Î±× |
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Reference Method |
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DIN 51724-3 Solid mineral fuels - Determination of sulfur - Part 3: Instrumental methods |
ASTM D5291 : Test method for Instrumental determination of Carbon, Hydrogen, and Nitrogen in petroleum products and lubricants. |
ASTM D 5373 : Standard Test Methods for Instrumental Determination of Carbon, Hydrogen, and Nitrogen in Laboratory Samples of Coal and Coke. |
ASTM D5622 : Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis. |
Tested with VELP Scientifica EMA 502 Elemental Analyzer |
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Introduction
¼®ÅºÀº ÁÖ·Î ¿¡³ÊÁö ¿ø·áÀÇ ÁÖ¿ä ¿ø¼ÒÀΠź¼Ò·Î ±¸¼ºµÇ¾î ÀÖ´Ù. ¼®Åº¿¡´Â ¹°, ¾Ï¼® ÀÜ·ù¹°, Èֹ߼º ¹°Áú ¹× Ȳ ÈÇÕ¹°µµ ÇÔÀ¯µÇ¾î ÀÖ´Ù.
ȲÀº ±âº»ÀûÀ¸·Î FeS2°ú Ȳ»ê¿° (Na2SO4, CaSO4, FeSO4)ÀÇ µÎ °¡Áö ¹«±â ÇüÅÂ¿Í È²È¹°, mercaptans, bisulfides µî°ú °°Àº À¯±â ÇüÅ·ΠÁ¸ÀçÇÑ´Ù.
ÀϹÝÀûÀ¸·Î °ÇÁ¶µÈ ¼®Åº¿¡´Â 0.2~5%ÀÇ È²ÀÌ Æ÷ÇԵǾî ÀÖ´Ù. ¼®ÅºÀÌ ¿¬¼ÒµÇ¸é ȲÀº Ȳȹ°°ú H2SÀÇ ÇüÅ·Π¹æÃâµÇ¸ç, ÀÌ´Â O2, ¹° ¹× ±âŸ ¹°Áú°ú
¹ÝÀÀÇÏ¿© Ȳ»êÀ¸·Î º¯ÇÑ´Ù. ÀÌ´Â ¼öÁú ȯ°æ¿¡ ¿µÇâÀ» ¹ÌÄ¡°í, Åä¾çÀ» »ê¼ºÈ Çϸç, ½Ä¹°°ú Àΰ£ÀÇ °Ç°¿¡ Å« Çظ¦ ³¢Ä¡°Ô µÈ´Ù.
µû¶ó¼ Á¦Ç°ÀÇ Ç°ÁúÀ» Æò°¡ÇÏ·Á¸é Ȳ°ú ź¼ÒÀÇ ¾ç°ú ºñÀ²À» ÃøÁ¤ÇÏ´Â °ÍÀÌ Áß¿äÇÏ´Ù..
CHNS determination in coal and coke
CHNS ¿ø¼Ò ÈÇÕ¹°À» ¾ò±â À§ÇØ 1000¡ÆC ÀÌ»ó±îÁö µµ´ÞÇÏ´Â VELP combustion furnace ¿¡¼ ½Ã·á¸¦ ¿¬¼ÒÇÏ´Â °ÍÀ¸·Î ºÐ¼®ÀÌ ½ÃÀ۵ȴÙ.
°íÈ°¼º ±¸¸® ºÐ¸»·Î ±¸¼ºµÈ VELP Vcoppe¢â Àº ºÐ¼®±â ÇÏ´Ü¿¡ ¹èÄ¡µÇ¾î ÀÖÀ¸¸ç NOx ¸¦ N2 ·Î ȯ¿øÇÏ´Â µ¥ µµ¿òÀ» ÁØ´Ù.
Gas stream Àº gas-chromatographic column ¿¡ µµ´ÞÇÏ°í ¼·Î ´Ù¸¥ ¼ººÐÀº °¢±â ´Ù¸¥ retention time À¸·Î column ¹ÛÀ¸·Î Èê·¯ ³ª°¡¸é¼ ºÐ¸®µÈ´Ù.
Reference °¡½º°¡ ÇÊ¿ä ¾ø´Â Çõ½ÅÀûÀÎ LoGasTM Thermal Conductivity Detector (TCD)¸¦ »ç¿ëÇÏ¿© ¸ðµç °¡½º ÇÔ·®À» °¨ÁöÇÒ ¼ö ÀÖ´Ù.
EMA 502´Â Á¶ÀÛÀÌ °£´ÜÇÑ EMASoftTM¸¦ »ç¿ëÇÏ¿© PC·Î Á¦¾î°¡ °¡´ÉÇÏ´Ù.
ºÐ¼®Àº ´Ü ¸î ºÐ ¾È¿¡ ¿Ï·áµÈ´Ù.
EMA 502 Preliminary Operations (daily)
»ç¿ë ¼³¸í¼¿¡ µû¶ó EMA 502¸¦ ½ÃÀÛÇÏ°í ´ÙÀ½ parameter¸¦ ¼³Á¤ÇÑ´Ù.
- Temperature CHNS reactor (Code A00000443) : 1030 ¡ÆC
- Temperature GC Column Oven : 55 ¡ÆC
- Flow rate MFC1 He : 120 ml/min
- Flow rate MFC2 He : 140 ml/min
2°³ÀÇ EDTA standard (Code A00000149) ¿Í 2~3 °³ÀÇ empty tin foils (Code A00000436) À» Å×½ºÆ®ÇÏ¿© ½Ã½ºÅÛÀ» Á¶ÀýÇÑ´Ù.
Ç¥ÁØ Å×½ºÆ®·Î curve »ý¼º¿¡ »ç¿ëµÈ °Í°ú µ¿ÀÏÇÑ Ç¥Áع°ÁúÀ» 1ȸ ÀÌ»ó ÃøÁ¤ÇÏ¿© calibration curve À» È®ÀÎÇÕ´Ï´Ù.
Sample Preparation
Reference coal samples |
Expected range values declared on the certificate |
- Reference coal 1 : |
S % = 0.35 ¡¾ 0.03% |
- Reference coal 2 : |
S% = 1.41 ¡¾ 0.03% |
Analysis Procedure
Database¿¡¼ Sample name, Weight, Method, Sample type, Calibration number µî Ç׸ñÀ» ÀÔ·ÂÇÑ´Ù.
´ÙÀ½ parameter¸¦ »ç¿ëÇÏ¿© »ç¿ëÀÚ Á¤ÀÇÀÇ »õ·Î¿î ºÐ¼®¹ýÀ» »ý¼ºÇÑ´Ù.
- O2 flow rate: 300 ml/nin
- O2 factor: 1.4ml/mg
- Min Oxy volume : 10 ml
¹öÆ°À» ´·¯ ºÐ¼®À» ½ÃÀÛÇÑ´Ù.
ºÐ¼®À» 1ȸ ½ÇÇà ½Ã ¼Ò¿ä ½Ã°£Àº 12ºÐÀÌ´Ù.
Typical CHNS Results on soil samples
CHNS Calibration : 15~50mg ¹üÀ§ÀÇ Ç¥ÁØ AR4019 (C% = 0.11, S%= 0.11) ¸¦ »ç¿ëÇÏ¿© ȹµæÇÑ calibration curve ¸¦ ±â¹ÝÀ¸·Î CHNS °á°ú¸¦ ÃøÁ¤ÇÏ¿´´Ù.
¾Æ·¡ Ç¥´Â 5-6mg ÀÇ »ùÇÃÀ» »ç¿ëÇÏ¿© EMASoft¢â ¿¡¼ ¾òÀº %C, %S °á°ú¸¦ º¸¿©ÁØ´Ù.
Conclusion
EMA 502 Elemental Analyzer CHNS-O´Â ¼®ÅºÀÇ Ç°ÁúÀ» °áÁ¤Çϴ ź¼Ò, Ȳ ¿ø¼ÒÀÇ ºÐ¼®¿¡ ½Å·Ú¼ºÀÌ ÀÖ´Â ºÐ¼®±âÀÌ´Ù.
The main advantages of VELP CHNS-O elemental analyzer
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Áú¼Ò 0.001 mg ±îÁö ÃøÁ¤ÀÌ °¡´ÉÇÑ ÃÊÁ¤¹Ð ÃøÁ¤´É·Â°ú 0.2% º¸´Ù ³·Àº »ó´ëÇ¥ÁØÆíÂ÷ (RSD) ¸¦ º¸¿©Áִ Ź¿ùÇÑ ÀçÇö¼º |
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¸ðµç »ç¶÷ÀÌ ½±°Ô »ç¿ëÇÒ ¼ö ÀÖµµ·Ï ¼³°èµÈ Çõ½ÅÀûÀÎ user interface |
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FDA ±ÔÁ¤ÀÌ ÇÊ¿äÇÑ Á¦¾à, ÈÀåÇ°, ½ÄÇ° ºÐ¾ß¿¡¼ »ç¿ëÇϱä À§ÇÑ Á¶°ÇÀÎ 21 CFR Part 11 Package ¼³Ä¡ °¡´É (Option) |
EM 502 C.H.N.S-O Elemental Analysis
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