Veel bedrijven hebben tray-type ontgassers in bedrijf en weten niet dat de relatief eenvoudige ombouw naar spray-type ontgassers tot enorme besparingen kan leiden!
Het ombouwen van een tray-type naar een spray-type ontgasser resulteert in betere prestaties, lagere TCO (geen onderhoudsvereisten) en verbeterde duurzaamheid. Het leidt tot een lager energieverbruik, minder stoomverlies en de overbodigheid van zuurstofafvangers, wat milieuvervuiling tegen gaat. Dit ombouwproces is minder ingewikkeld en heeft een kortere terugverdientijd dan je zou denken.
In dit webinar bespreken Joyce Logman en Alex Heino de voordelen van de ontgasser ombouw op de bovengenoemde onderdelen. Zij leggen uit welk effect de overstap van tray-type naar spray-type heeft op duurzaamheid en potentiële kostenbesparingen. Daarnaast wordt er besproken hoe een retrofit er grofweg uitziet, van engineering tot inbedrijfstelling.
Stork webinar | Voordelen van een deaerator retrofit
1. DEAERATOR RETROFIT
Advantages of converting tray-type deaerators to spray-type deaerators
The webinar starts at 12.00h. CET
You can ask questions through the Q&A button in the zoom-menu.
During the webinar all participants are on ‘mute’.
Webinar
4. MAINTAINING A BETTER WORLD
INTRODUCTION
PRESENTERS
MAINTAINING A BETTER WORLD
Joyce
Logman
Alex
Heino
5. MAINTAINING A BETTER WORLD
INDEX
DEAERATOR
• Deaerator Principle
• Tray-type vs. Spray-type
• Why Retrofitting
• Procedure
• Example Case
• Cost of Ownership
• Economical benefits
• Environmental benefits
7. MAINTAINING A BETTER WORLD
DEAERATOR
PRINCIPLE
STEAM CHARGING RAKE
• Uniform Steam Distribution
• Condensing steam as energy source
SPRAYER
• Condensate distribution
BAFFLE PLATES
• Providing Flow Regime
STORAGE VESSEL
• Storage Capacity
DEAERATION
• Sprayer and Vessel
8. MAINTAINING A BETTER WORLD
DEAERATOR
PRINCIPLE
REMOVE GASSES
• 𝑂2 Corrosion (oxidation of metal)
• 𝐶𝑂2 Corrosion (dissolving of metal)
• 𝑁2, other
FEED WATER STORAGE
Capacity Deaerator is +/- 10-20% of nominal steam
production
PRE-HEATING OF FEEDWATER TO BOILER
+/-10-20 °C Condensate, 90 °C Feed water +/- 105 °C
ENERGY BUFFER
9. MAINTAINING A BETTER WORLD
TRAY-TYPE VS.
SPRAY-TYPE
• Condensate Distributor: Sprayer
• Steam Distributor: Steam Rake
• Vent next to Sprayer
• Condensate Distributor: Trays
• Steam Distributor nearby Trays
• Vent on Dome
11. MAINTAINING A BETTER WORLD
WHY
RETROFITTING
1. Higher and constant
performance: ~7 ppb
2. No oxygen scavengers needed
3. Less operational costs
4. +/- 90% reduction of steam loss
5. Less noise pollution:
>85 dB naar <80 dB
12. MAINTAINING A BETTER WORLD
WHY
RETROFITTING
6. Improved capacity
7. Turndown ratio >1:10
8. Simplified construction
9. Less parts less maintenance
13. MAINTAINING A BETTER WORLD
PROCEDURE
OF RETROFIT
INSPECTION
BASIC ENGINEERING
DETAIL ENGINEERING
MANUFACTURING
SITE MODIFICATIONS
START-UP
14. MAINTAINING A BETTER WORLD
EXAMPLE CASE
SALT MINE GERMANY
• Increased capacity
• Reduced steam loss, saving €68.800.-/year
• Life expectance = 30 years
• Client saves €2.064.000.-
15. MAINTAINING A BETTER WORLD
BUSINESS CASE
PAYBACK TIME
TRAY-TYPE SPRAY-TYPE
Investment
Av. Price retrofit €120.000
Installation €80.000
Retrofit investment €200.000
Annual operational costs
Maintenance €30.000 €10.000
Steam loss €40.000 €5.600
Chemicals €67.200 € -
Total €137.200 €15.600
Annual savings €121.600
Payback Time 1,65 year
ASSUMPTIONS:
• Life expectance Stork
deaerator: 30 years
• Operational hours: 8000 h/y
• Capacity: 286 t/h
• 1.2 L/h scavenger
• 1.85 kg /𝑛𝑚3
natural gas
• 1500 𝑚3
/y natural gas per
household
PRICES:
• €10.-/t steam
• €7.-/L scavenger
𝑂2
𝐶𝑂2
16. MAINTAINING A BETTER WORLD
ENVIRONMENTAL
BENEFITS
• Example case:
• Steam savings when retrofitted: €40.000 - €5.600= €34.400
• €34.400 = 3.440 ton steam
= 140 households
= 390 ton 𝑪𝑶𝟐 SAVED per year
17. MAINTAINING A BETTER WORLD
IMPROVE DEAERATOR PERFORMANCE
WRAP UP!
• Improve deaerator performance by converting to spray-type deaerator
• Conversion will reduce costs & environmental harm significantly due to:
• Removing of oxygen scavenger
• Reducing steam losses
• Payback time often within 3 years
• Conversion in a relatively short time
19. RECORDED WEBINARS
> www.stork.com/recorded-webinars
NEXT WEBINARS (DUTCH):
THANK YOU FOR YOUR ATTENDANCE
Compliance
& fugitive
emissions
5 JUNE
Lifecycle
Asset
Management
3 JULY
CONTACT US:
> experts@stork.com
www.stork.com/podcast
Notes de l'éditeur
[Ferry] Introductie t/m de spelers....Bram als nieuws lezer...
Basic Eng: process study
Detail Eng: site visit and detail design package of internals and modifications on the vessel
Manufacturing: production/delivery sprayer + possibly internals by Stork
Site modification: depending on location, by stork or local mechanical contractor. Inspection visit from Stork (for warranty reasons)
Start up: to be further agreed, depending on customer wishes
Ferry:
21 juni: Kip of ei - Wat zijn de ontwikkelingen in NL waterstofland (en wat kan dat betekenen voor jou als asset owner)
23 augustus: Waterstof competenties
20 September: Klaar voor waterstof