Download - Sulfur Handling - Outotec - COBRAS 2015
Sulfur handling & meltingSebastian Brechtel
Product & Strategy Manager
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Sulfur handling and melting – process steps
05/01/20232
• Sulfur storage
• Solid sulfur dosing
• Sulfur melting
• Sulfur filtration
• Leaf filter
• Polishing / Police filter
• Liquid sulfur storage
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Sulfur Handling & Melting
05/01/20233
Sulfur Melting in ext. Heat Exchanger & Filtration & Storage
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Sulfur Storage
05/01/20234
Bulk Storage
Liquid Sulfur Storage45,000 t
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Sulfur storage under roof recommended
05/01/20235
• Higher CAPEX
• Safety concept needed
• Less impact on environment
• Minimized pollution = loss of sulfur
• Acidity control
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Solid Sulfur-Day Bin
Features• Bin for two sulfur melters
• Two independent discharge systems for each melter• High flexibility
- Adjustable sulfur feed of each melter
• Reduced Invest cost, only one installation
• Additional buffer capacity • More flexibility by feeding from
storage to day bin
05/01/20236
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Solid Sulfur-Day Bin
Alternative – Payloader
• Smaller capacity plants
• Man power required
05/01/20237
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Sulfur melting and filtration
Features
• Sulfur melting tank above ground
• No pits – why?
• Dead zones in rectangular shaped pits
• Solids settling
• No heat and mass transfer in dead zones
• Leakages not visible= LARGE & INEFFICIENT
05/01/20238
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Sulfur melting and filtration
Features
• Sulfur melting tank above ground
• Tanks advantages
• Circular without dead zones
• Easy to agitate well
• High efficiency mass and heat transfer
• Easier cleaning
Efficient:40 t/h sulfur melting in tank of
7 m diameter4 m height
05/01/20239
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Sulfur melting and filtration
Features
• Sulfur melting tank above ground
• No pits
• Front-end loader sulfur feed or
Sulfur day bin dosing
• Good access for maintenance
• Heating coils removable or external shell and tube heat exchanger
• One single agitator in melter
• Leaf filter & polishing filter
05/01/202310
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Sulfur Melting Tank - Dirty Sulfur
Features
• Full drainage of the tank possible for maintenance
• Easier removal of non-molten , un-desired solids collected at the lowest part of the vessel
• Better access to equipment parts
• Removable heating coils
• Carbon steel with brick-lined section in upper part of the melter
• Natural overflow to dirty sulfur pump tank
05/01/202311
M
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Sulfur Melting Tank - Dirty Sulfur
05/01/202312
Flat Bottom
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Sulfur Melting Tank
Features
• minimized number of weld seams by bending design
• heating bundle removable from top of melter by filled up melter
• individual replacement of each heating coil
05/01/202313
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Sulfur Leaf Filter
Features• Hydraulic movement of Filter Shell• Avoiding filter cake disposals on
movement system , Hanging shell arrangement prefered
• Solid filter plate support system• Personal risk elimination by disposal
opening below filter frame• All utility and sulfur connections at
fixed head except the shell heating device
05/01/202314
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Police - / Polishing - Filter
05/01/202315
FeaturesFilter candle type
sinter material allowshigh filtering efficiency,steam and chemical cleaning
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Ceramic vs. wounded glas fibre candles
05/01/202316
Pro• Efficient• High capacity
Con• Cost• Cleaning difficult
Pro• Cost
Con• Capacity• Single use
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Ceramic vs. wounded glas fibre candles
05/01/202317
Design decision triggered by level of impurities
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