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WATER TREATMENT By Chemist Ayman Awny Website :www.resategypt.com

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

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

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

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

5 Boiler 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

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

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

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

11 Website :www.resategypt.com
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 +CO > H+ + HCO3- RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

12 Website :www.resategypt.com
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 Filtration Unit Boiler feeding Pump e.g Reservoir Ion Exchanger, of Feed water Reverse Osmosis Softeners Steam Boiler RESAT EGYPT WATER TREATMENT Website :www.resategypt.com Chemical Dosing

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

20 Website :www.resategypt.com
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
O2 8.11 25 7.53 30 7.04 35 6.59 40 6.10 45 5.57 50 5.20 55 4.76 60 4.30 65 3.70 70 3.40 75 2.89 80 2.20 85 1.63 90 0.80 95 0.1 100 RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

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

24 Website :www.resategypt.com
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 Limits and Steam Purity( 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 Website :www.resategypt.com
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 الفوران Foaming RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

38 Website :www.resategypt.com
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 CO Ca(OH)2  CaCO3  + H2O Disadvantage Disposal of calcium carbonate sludge RESAT EGYPT WATER TREATMENT Website :www.resategypt.com

39 Website :www.resategypt.com
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
نوع التحليل CITY WATER SOFTENED WATER DEIONIZER WATER pH 7.5 7.6 Ca H عسر الكالسيوم 90 M ALK القلوية الكلية 140 <10 TDS الاملاح الذائبة 250 TEMP. درجة حرارة 25 Corrosion Rate 3.2 MPY 30 MPY 60 MPY

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


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