Customized Water Quality Measurement Solutions

Transcription

1 Products Solutions Services Customized Water Quality Measurement Solutions Applications for Produced Water and Boiler Feedwater Slide 1

2 Analyzers in PW and BFW Service for SAGD I&C WG Slide 2

3 SWAS Panel Steam and Water Analysis System Modular system, can easily add/change measurement panels Sample preparation panel for high temps and pressures All components are front mounted for easy disassembly and maintenance Multiple Parameters including: ph, DO, Conductivity (Cationic, Degassed, Specific), Silica, Sodium, etc. Freestanding, Wall Mounted, Cabinet, and Container options available Slide 3

4 Products Solutions Services Analytical Measurements Applications Slide 4

5 Typical analytical measurements Applications Demineralization Train & Make-up Water Treatment Cooling Water & Condensate Return Boiler Feedwater & Steam Treatment Wastewater Treatment Flue Gas Scrubbers Main Objectives for Liquid Analysis High purity water monitoring and control Chemical feed control; disinfection; blowdown control; detection of air inleakage and cooling water leaks into the return system Chemical feed control; water purity monitoring final effluent monitoring Desulphurization Typical Measurements Conductivity, ph, Chlorine, Turbidity, Conductivity, Silica, Hardness Conductivity, Chlorine, ph, Turbidity, Cation Conductivity, DO, Hydrazine ph, Conductivity, Cation Conductivity, ppb DO, Hydrazine, Phosphate, Silica, Sodium ph, ORP, DO, Chlorine, Conductivity, COD, Ammonia ph Slide 5

6 Products Solutions Services Dissolved Oxygen Slide 6

7 Why Dissolved Oxygen Dissolved Oxygen concentrations must be controlled to reduce the likelihood of forming Oxygen corrosion cells that can result in pitting The An external treatment system must be in place to minimize the ingress of dissolved and suspended solids and/or an internal treatment system must be used to control these materials. High degree of mechanical and chemical treatment in a boilers of all sizes. Automation and performance tracking through dissolved oxygen measurement will save significant money in chemical and energy savings Slide 7

8 How does it work? A virtual tour through the sensor At the process side, the well-known membrane is in contact with the process. A current in the na-range is generated, digitalized and calculated as oxygen content. The cathode (platinum) is housed in a glass body this combination can even withstand the high temperatures during SIP. A spring behind the glass body balances small distance changes between the sensor parts and guarantees a nearly constant contact pressure on the membrane. Voltage Electrolyte Cathode Membrane Anode Slide 8

9 Boiler feeding water measurement of dissolved oxygen Boiler feeding water in industrial steam production Main measured value between 2 and 4 ppb Start-up phase Daily work Zoom next page Slide 9

10 Boiler feeding water Boiler feeding water in industrial steam production Fast, detailed measurement allows in-time control of steam de-aeration Fast, detailed measurement allows control of steam production according to plant needs 1 hour zoom Boiler feeding water Zoomed view over 1h shows fast response Concentration oxygen [mg/l] 0,006 0,005 0,004 0,003 0,002 0, :33 10:48 11:02 11:16 11:31 11:45 Time Slide 10

11 Dissolved Oxygen Panel Slide 11

12 Dissolved Oxygen Control Use dissolved oxygen to measure efficiency of the deaerator. A properly functioning de-aerator should produce DO levels below 20 ppb. Use DO and flow after the deaerator to control feed of dissolved oxygen removal chemicals. Using DO here can save significant costs by reducing the dosing of chemicals into the boiler feed water. DO is measured throughout the system check for system integrity and ensure there are no leaks into the system that can cause premature failure of the boiler loop. Slide 12

13 Products Solutions Services Optical Sensors Principle of Operation and Applications Slide 13

14 Why Turbidity and Optical Sensors Sand has the ability to clog or channel the Weak Acid Cation (WAC)Exchanger Oil will coat the WAC resin reducing efficiency Sand and Oil in the system will reduce resin life Causes downtime in resin replacement and high expense of resin purchase. Slide 14

15 Analyzers in PW and BFW Service for SAGD I&C WG Slide 15

16 Turbidity - Theory I Turbidity occurs when light is scattered at heterogeneous surfaces of particles. Slide 16

17 Turbidity Theory II Particles may be anything creating heterogeneous surfaces: solids in liquids oil in water / water in oil gas bubbles dust in air droplets in air (suspension) (emulsion) (foam) (smoke) (fog, aerosol) Slide 17

18 Turbidity - Theory III Small particle Big particle Intensity of scattered light depends on particle size Slide 18

19 Turbidity - Formazine as standard Formazine 2 [C2H4N ] ingredients: Hexamethylentetramine + Hydrazinsulfate standard-formazin-solution = 4000 FNU 1 FNU = 1 FTU = 1 NTU = 1 TU/F = 0,25 EBC FNU = formazine nephelometric unit FTU = formazine turbidity unit NTU = nephelometric turbidity unit TU/F= turbidity units formazin EBC = European Brewery Convention Slide 19

20 Turbidity - Ranges ,5 5 2, FTU EBC ppm NIR Concentration Forward Scatt. Light Side Scatt. Light Slide 20

21 Turbidity as function of concentration FNU Dry matter ppm

22 3-point-calibration Preparation of samples 33% original sample 10% 2 parts water 9 parts water 1 part sample 1 part sample

23 Turbidity - Scattered light and NIR absorption I S 11 Scatt. Angle I D NIR Filter Slide 24

24 Why 11 Forward Scattering Angle? I S 11 I D Scatt. Angle Forward Scattered Light Intensity shows much better correlation to particle concentration than other angles (i.e. 90 and backscattering) Small particle Big particle Slide 25

25 Turbidity - Principle Scattered Light: I S I D Single Beam Absorption: Slide 26

26 Photometry - Principles NIR Filter Visible Light (VIS) Near Infrared (NIR) nm NIR Filter eliminates influence of visible colour Slide 27

27 Photometry - Principles Turbidity Intensity Single Beam Absorption: Low sensitivity Significant turbidity changes Calibration in OD Scattering of light: High sensitivity Compensation of lamp aging Calibration in FTU or FNU Slide 28

28 Turbidity - Typical Applications Condensate control Sludge measurement EBC Turbidity Filter Control Turbidity in potable water Heat exchanger control Lautertun Control Oil / HC in water Suspended solids Turbidity in brine Water in oil / fuel / LNG Biomass in fermenter Concentration of catalysts Concentration of vaccines Filter feed Flotation control Milk / Water Separation Phase separation in chemistry Suspended solids Sedimentation control Separator control Yeast harvest Slide 29

29 Industries and Applications Oil and Gas Color measurement for Quality Control (ASTM, Saybolt) Destillation control by color Leakage detection in heat exchangers Interphase detection light oil / crude oil Oil in water Water in oil or jet fuel Waste water control Slide 30

30 Oil in Water Samples of each phase were collected and tested in our laboratory. Sample OD WATER Sample OD EMULSION Sample OD OIL Slide 31

31 Water-Oil Measurement Slide 32

32 Process Description Purpose of filtration: Separation of oil and water Benefits of measurement: Monitor of clarity of the water phase Separation of oil and water Early detection of break through Sensors: OUSTF10 or OUSAF12 (depends on signal difference between emulsion and clear phase) Oil-Water Emulsion Oil f i l t e r Water Slide 33

33 Optical Turbidity Panel Measures turbidity in lime softened produced water at Oil Sands Location (Canada) Pictured panel uses Monel Alloy 400 tubing, fittings, and flowcell, along with a PTFE lined rotameter. Stainless options also available. Clean/flush line and process line connections CRN and CSA GP Certified NEMA 4X enclosure for transmitter Dimensions: 65 x 35 Slide 34

34 Optical Turbidity Panel (EXP) Measures turbidity of produced water at Oil Sands Location (Canada) Pictured panel uses stainless steel tubing, fittings, flowcell, and rotameter Clean/flush line and process line connections CRN and CSA Class I Div 2 B,C,D approved Transmitter located several meters away in safe zone due to classification requirements Dimensions: 65 x 35 Slide 35

35 Installation Example Process: Temperature permanent: 60 C Turbidity water phase: 2 FNU Turbidity Emulsion: 5000 FNU Sensor: OUSAF12 Slide 36

36 Turbidity and Optical Sensors Increase efficiency of Weak Acid Cation Exchange which will reduce scaling Increase uptime of overall system Reduce downtime and expense of system maintenance Slide 37

37 Products Solutions Services Hardness Measurement Slide 38

38 E+H Knows - Analyzers in PW and BFW Service for SAGD Slide 39

39 Specific Ion Measurement in Boilers Hardness or Calcium will measure cation exchange efficiency High Hardness (CA 2+, Mg 2+ etc.) will scale the inside of the tubes and boiler heater plates. Hardness Method uses colorimetry Measuring Hardness will reduce regeneration of exchange beds save chemical and maintenance costs. Slide 40

40 What is photometry? Light absorption original emitted light intensity I 0 received light intensity I 1 Absorption = log (I 1 / I 0 ) Slide 41

41 Wet-chemical photometry Color reaction Reagent Searched substance is invisible Reagent dyes the substance All other substances "are not "dyed" Slide 42

42 Wet-chemical photometry Reagents + sample colored complex Slide 43

43 Process Applications - Stamolys CA 71 Parameter Typical application Instrument Range Aluminium Drinking water CA71AL μg/l Al Process water μg/l Al Nitrogen, Ammonia Drinking water Wastewater Ultrapure Water Food water Chromium,hexavalent industriell Wastewater Process water Iron Drinking water Wastewater Hardness Hydrazine Silica Copper Demineralizers Boilerfeed water Process water Steam analysis RO units Boilerfeed water Process water Ultrapure Water Boilerfeed water Steam analysis RO units Demineralizers Process water industriell water CA71AM 0,1-5 mg/l as N NH 4 0,2-15 mg/l as N NH 4 0,2-100 mg/l as N NH 4 CA71CR 0,10-2,50 mg/l Cr (VI) 0,20-5,00 mg/l Cr (VI) CA71FE μg/l Fe μg/l Fe μg/l Fe CA71HA 0,20-10 mg/l CaCO 3 0,80-80 mg/l CaCO 3 CA71HY μg/l N 2 H 4 CA71SI μg/l Si μg/l Si CA71CU 0,10-2,00 mg/l Cu 0,20-5,00 mg/l Cu Manganese Drinking water CA71MN μg/l Mn μg/l Mn Nitrite Phosphate, high range Phosphate, low range Drinking water Process water Wastewater Wastewater Boilerfeed water cooling tower water Wastewater Drinking water Boilerfeed water CA71NO μ/l as N μ/l as N μ/l as N CA71PH (yelow Method) CA71PH (blue method) 0,5-20 mg/l P 0,5-50 mg/l P 0,05-2,50 mg/l P 0,05 25,0 mg/l P Slide 44

44 Tubing connection plan Analyzer Reagent pump Sample pump Photometer Valves P Option two channel version R S 2 1 Exhaust Cleaner Standard Reagent 1 Reagent 2 Reagent 3 Slide 45

45 Photometer-construction Reference-LED Measuring-LED Heater surround cuvette Receiver glass-cuvette Slide 46

46 Energy Loss Due to Scale Deposits From US Department of Energy: Steam Tip Sheet #7 Slide 47

47 Efficiency Loss Calculation A firetube boiler annually uses 450,000 million Btu (MMBtu) of fuel while operating for 8,000 hours at its rated capacity of 45,000 pounds per hour (lb/hr) of 150 pounds per square inch gauge (psig) steam. If scale 1/32nd of an inch thick is allowed to form on the boiler tubes, and the scale is of normal composition, the table indicates a fuel loss of 2%. The increase in operating costs, assuming energy is priced at $8.00 per million Btu ($8.00/MMBtu), is: Annual Operating Cost Increase = 450,000 MMBtu/yr x $8.00/MMBtu x 0.02 = $72,000 Slide 48

48 Products Solutions Services Panels for Oil & Gas Applications Slide 49

49 SWAS Panel Steam and Water Analysis System Modular system, can easily add/change measurement panels Sample preparation panel for high temps and pressures All components are front mounted for easy disassembly and maintenance Multiple Parameters including: ph, DO, Conductivity (Cationic, Degassed, Specific), Silica, Sodium, etc. Freestanding, Wall Mounted, Cabinet, and Container options available Slide 50

50 Example of Panel installed Slide 51

51 Example of Panel installed Slide 52

52 Installations in SAGD Slide 53

53 Dissolved Oxygen, Optical and Hardness Increase Efficiency Optimized De-aerators, Reduce fuel costs, Better Cation Exchange Reduced Downtime Corroded tubes, Cation Resin Replacement, Boiler Uptime Enhance Operation Improved water going into the boiler will improve the Steam generation and reduce overall cost Slide 54

54 Products Solutions Services Thank you very much for your attention Slide 55