winter fuel training
Post on 10-Apr-2015
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30,000 TONNES PER ANNUMWINTER FUEL BIODIESEL PLANT
forMALAYSIAN PALM OIL BOARD
&TITIAN ASLI SDN BHD
WINTER FUEL BIODIESEL PLANT
Topics
• What is winter fuel
• Process description
• Plant description
• Operating instructions
WINTER FUEL BIODIESEL PLANT
WHAT IS WINTER FUEL
WINTER FUEL BIODIESEL PLANT
Normal grade palm biodiesel
• Palm methyl esters (PME) produced from RBD palm oil or palm olein
• Melting point ≅ 15°C
• At low temperatures
Normal palm biodiesel will start to gel
The diesel engine will stall
• Suitable only for countries with hot climate
WINTER FUEL BIODIESEL PLANT
Winter grade palm biodiesel
• Liquid esters produced by fractionation of normal grade palm biodiesel
• Pour point ≅ –21 to 0°C
• Definition of pour pointThe lowest temperature at which movement of the fuel can be detected when the sample container is tilted
WINTER FUEL BIODIESEL PLANT
PROCESS DESCRIPTION
WINTER FUEL BIODIESEL PLANT
RecirculationTo filter press
Hot water
Chilled water
Water return
Ester feed
RecirculationSteam
Stage 1Preheating of the feedstock
to 40°C
Stage 2Cooling and crystallization
according to a cooling curveFractionation process
WINTER FUEL BIODIESEL PLANT
Stearin
Washing Olein Squeezing
Core Blow
Recirculation
Stage 3Filtration to separate
liquid ester (olein) from solid ester (stearin)
WINTER FUEL BIODIESEL PLANT
Typical crystallization cooling curve
Time (hour)
Tem
pera
ture
(°C
)
Water Ester
40°C
Filtration : Feeding step
• Olein passes through the filter cloth and out of the filter via the filtrate channel
• Stearin is retained by the filter cloth, forming a cake which fills the filter chamber
WINTER FUEL BIODIESEL PLANT
Feed fromcrystallizer
Olein
Stearin
Filtration : Squeezing step
• Inflation of the flexible membrane with olein
• The inflated membrane presses on the stearincake thus forcing out olein trapped in the cake
WINTER FUEL BIODIESEL PLANT
Olein for squeezing
Filtration : Cake discharge step
• Blowing of feed channel and filtrate channel with compressed air
• The drip pan and filter are opened and the stearin cake drops into the melting tank
WINTER FUEL BIODIESEL PLANT
Drip Pan
WINTER FUEL BIODIESEL PLANT
PLANT DESCRIPTION
WINTER FUEL BIODIESEL PLANT
To filter press
Plant 1 - Crystallizers
WINTER FUEL BIODIESEL PLANT
Plant 1 - Filtration
Cold Room
WINTER FUEL BIODIESEL PLANT
To filter press
Plant 2 - Crystallizers
Hot waterfrom P110
Chilled waterfrom P132
WINTER FUEL BIODIESEL PLANT
Plant 2 - Filtration
WINTER FUEL BIODIESEL PLANT
Utility Section
Hot Water Tank
Chilled Water Tank
Glycol Chiller
Hot Water (80-90°C) to Plant
Chilled Water (minus 15°C)
to Plant
HOT WATER SYSTEM
CHILLED WATER SYSTEM
WINTER FUEL BIODIESEL PLANT
Plant 1 (12 crys)
Plant 2 (3 crys)
Utility section
Filtration section
Additive tanks
WINTER FUEL BIODIESEL PLANT
Filter 1 Filter 2
Oleindryer
Stearindryer
WINTER FUEL BIODIESEL PLANT
Production of winter fuel(double fractionation)
P M E
Step APlant 1
Stearin AOlein A
Olein C Stearin C
Step CPlant 2
20% 20%
60% 40%
Olein B Stearin B
Step BPlant 135% 25%
Winter fuel
Note : The yield figures are only approximate
WINTER FUEL BIODIESEL PLANT
Production of winter fuel(single long fractionation)
P M E
Olein A’ Stearin A
Step A’Plant 135% 65%
Winter fuel
Note : The yield figures are only approximate
WINTER FUEL BIODIESEL PLANT
OPERATING INSTRUCTIONS
WINTER FUEL BIODIESEL PLANT
To filter press
Ester feed
Recirculationinlet
Hot waterChilled water
Water return
Crystallizer
• Agitator• Frequency inverter• Level transmitter c/w settings
for HLA & LLA• High level switch• Inlet actuated valve• Outlet actuated valve• Water circulation pump • Water circulation flowmeter• Temperature of ester• Temperature control for water• Level control for water
Recirculationoutlet
WINTER FUEL BIODIESEL PLANT
PLC Control System – Overview
WINTER FUEL BIODIESEL PLANT
Key in control parameters for crystallizers.
WINTER FUEL BIODIESEL PLANT
Key in control parameters for filtration and utility sections.
WINTER FUEL BIODIESEL PLANT
Key in settings for cooling programs (recipes).Total no. of recipes in the library = 15.
WINTER FUEL BIODIESEL PLANT
--------30012050300Segment time (min)
--------1818202535Water temperature (°C)
19………876543210Segment no.
Recipe Settings : No. of segments used = 4
Time (min)
Tem
pera
ture
(°C
)
30 50 120 300
35
25
2018
Cooling curve
WINTER FUEL BIODIESEL PLANT
Select the type of feed material – Methyl Ester (Step A) or Liquid Ester (Step B).
WINTER FUEL BIODIESEL PLANT
Select the recipe to be used for each crystallizer.
WINTER FUEL BIODIESEL PLANT
Select FILL – inlet valve V401-1 will open, the feed pump will start. When LT401 reaches 50%, agitator AG401 will start.
WINTER FUEL BIODIESEL PLANT
At high level HLA or high high level LSH, the feed pump will stop. After a preset delay timer, inlet valve V401-1 will close .
WINTER FUEL BIODIESEL PLANT
At the end of the preset homogenizing period, cooling will start automatically – pump P301 will start, controllers LIC301 and TIC401 will run.
WINTER FUEL BIODIESEL PLANT
If the temperature of ester in the crystallizer is less than 40°C after homogenizing, reheat the ester and select COOL to start cooling.
WINTER FUEL BIODIESEL PLANT
The cooling time varies from 20 hr to 50 hr. In the mean time, start feeding ester into the next crystallizer.
WINTER FUEL BIODIESEL PLANT
At the end of cooling, a message will be displayed. Select DISCHARGE –outlet valve V401-3 will open.
WINTER FUEL BIODIESEL PLANT
Start the filtration process at the filter press PLC panel. Operation of the filter press from closing to opening is fully automatic.
WINTER FUEL BIODIESEL PLANT
At low level LLA, agitator AG401 and pump P301 will stop. After a preset delay timer, outlet valve V401-3 will close.
WINTER FUEL BIODIESEL PLANT
Batch Report
WINTER FUEL BIODIESEL PLANT
Daily Production Report
WINTER FUEL BIODIESEL PLANT
QUESTIONS?
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