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معالجة الميا ه

معالجة الميا ه. RESAT EGYPT WATER TREATMENT Website :www.resategypt.com. WATER TREATMENT By Chemist Ayman Awny. Introduction. Problems Of Water Treatment. Water Treatment In Industry. Water Treatment In Hotels,Hospitals & Building. RESAT EGYPT WATER TREATMENT

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معالجة الميا ه

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  1. معالجة المياه RESAT EGYPT WATER TREATMENT Website :www.resategypt.com WATER TREATMENTBy Chemist Ayman Awny

  2. Introduction • Problems Of Water Treatment. • Water Treatment In Industry. • Water Treatment In Hotels,Hospitals & Building. RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  3. مشاكل المياه الأساسية Micro. Corrosion 1 4 2 Scale Suspended. Solid 3 RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  4. Topics of Discussion • Corrosion. • Scale Formation. • Suspended Solids. RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  5. Boiler Water Treatment RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  6. Problems in Boiler Systems • Corrosion • free carbon dioxide • oxygen • Deposits • hardness • organic matter • corrosion products • Suspended Solids • corrosion product • scale product RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  7. Topic One التآكــــل Corrosion RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  8. Causes of Corrosion • Boiler Area • Insufficient oxygen removal in feed water • High pH value and alkalinity • Increase in suspended solids • Steam and Condensate Area • Formation of carbon dioxide • Insufficient oxygen removal in the feed water • Low pH-values RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  9. O2 OH- • WATER • ELECTRON FLOW Fe2+ O2 Fe(OH)3 ANODE CATHODE ANODE REACTION CATHODE REACTION ½ O2 + H2 O + 2 e- = 2OH- Fe° = Fe2+ + 2 e- • التآكل • هو عملية تحول الحديد الي أحد أكاسيده مما يقلل العمر الإفتراضي للمعدن طبقا لهذه المعادلات RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  10. Causes of Corrosion Fundamental Risks In Boiler Water • StandardCorrosion Reaction • Fe -------->Fe ++ + 2 e - • 2e- + 1/2 O2 ----->2 OH- • 2e - + 2H+ ----->H2 RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  11. Causes of Corrosion Fundamental Risks in Steam and Condensate System • Carbonic acid Behavior (corrosion) • inside boiler : 2(H CO3Na )------->Na2CO3 + CO2 + H20 Na2 CO3 + H2O -----> 2 NaOH + CO2 • in condansate system : H20 +CO2 --------> H+ + HCO3- RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  12. أشكال التآكل • فى صورة تآكل سطحي • فى صورة نقر. • فى صورة تآكل منتظم. • في صورة شروخ RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  13. Surface Corrosion + Sludge RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  14. Corrosion in steam line RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  15. Pitting corrosion

  16. Pitting Corrosion Inside Boiler RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  17. High pH Caustic corrosion RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  18. Scheme of a Boiler System Cooling Water Consumer Return Condensate Condenser Steam Make-up Water De aeration Feed water Blow-down Boiler feeding Pump Filtration Unit e.g. Reservoir Ion Exchanger, of Feed water Reverse Osmosis Softeners Steam Boiler RESAT EGYPT WATER TREATMENT Website :www.resategypt.com Chemical Dosing

  19. Low Pressure Boiler Operating pressure up to 68 bar High Pressure Boiler operating pressure above 68 bar Classification of Boiler Systems RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  20. أسباب التآكل #وجود الأكسجين الذائب بالمياه وتأثيره #ارتفاع نسبة الأس الهيدروجينى (pH ) أو انخفاضه. ( ارتفاع القلوية أو الحمضية) # إرتفاع درجة الحرارة. # نوعية مياه التعويض. # الاملاح العالقة RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  21. العلاقة بين مياة التعويض والتآكل • كيفية تحديد العلاقة . اولا : التحليل الكيمائى لمياة التعويض. RIZENER INDX ثانيا: ربط التحليل بمعامل الريزنر RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  22. العلاقة بين الاكسجين الذائب في المياه و درجة الحرارة RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  23. CorrosionOf Steel VS Boiler Water pH RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  24. مقاومة التآكل CORROSION PROTECTION • ضبط pH • ترشيح جيد للمياه لإزالة الأملاح العالقة. • إزالة الاكسجين ميكانيكيا ( بالتسخين ). • ضبط الأملاح الكلية ( TDS ) • المعالجة الكيميائية RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  25. DEAERATOR

  26. FEED TANK

  27. Boiler Water LimitsandSteamPurity( 1 ) (1) Approved by ASME (2) Changes according to TDS of B.F.W. (3) Changes according to TDS of B.F.W. (4) Determined depending on boiler water treatment program (5) Silica is not included RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  28. الترسبات scales

  29. هى املاح تخرج من محلولها فى صورة املاح عالقة • ويتم ذلك بتأثير الحرارة . • وتتسبب فى حدوث قشرة صلبة على جدار المواسير

  30. العلاقة بين نسبة الكالسيوم الذائب ودرجة الحرارة

  31. الاملاح الشائعة المسببة للقشرة

  32. الكالسيوم ماغنسيوم سيليكا اكسيد الحديد

  33. Scale Problem (In Boiler )

  34. Scale After Treatment

  35. الأملاح العالقة Suspended Solids

  36. بعض الاملاح العالقة مثل. الأتربة الرمال بعض الملوثات مثل الزيوت ارتفاع نسبة الاملاح الذائبة عن الحد المطلوب RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  37. المشكلات التى تسببها الأملاح العالقة التآكل الميكانيكي Corrosion الترسيبات Scale الفورانFoaming RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  38. Lime Softening Mode of action • Addition of lime milk Ca(OH)2 Elemination of carbonate hardness and carbon dioxide Reactions • Precipitation of Ca-hydrogen carbonate Ca(HCO3)2 + Ca(OH)2  2CaCO3 + 2 H2O • Neutralization of carbon dioxide CO2 CO2 + Ca(OH)2 CaCO3 + H2O Disadvantage • Disposal of calcium carbonate sludge RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  39. Ion Exchange / Basics • Mode of action • Physical-chemical methods • Up-take of specific ions to the ion exchanger resin • Delivery of an equivalent amount of different equally charged ions Kinds of ion exchangers • Cationic ion exchanger • Anionic ion exchanger • Mixed bed ion exchanger RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

  40. التحليل الكيمائى لمياة التعويض

  41. Questions My Regards Ayman Awny RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

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