World Grain - December 2016 - 50

FEED OPERATIONS

sion, scale and other deposits in the
boiler and steam system. This treatment
is part of the process to keep the steam
pure and the boiler and system free of
corrosion or buildups of foreign materials. A boiler and the steam system have
three potentially destructive elements:
oxygen, carbon dioxide and solids.

Moisture?

7KH ¿UVW PRYH LV WR HOLPLQDWH DV
many problems with the water before
it enters the boiler. The most common
pre-treatment is using a water softener
to remove grains of hardness and produce a soft water. Prior to the boiler
there is a feed water tank into which
returned condensate from the system is

Protein?

Analyzers
capture value
Ash?

Falling Number?
Gluten?

Water absorption?

s+YEARSKNOWLEDGEEXPERTISE
s&UNCTIONALCOMPOSITIONALANALYSIS
s&LOURGRAINSOILSEEDS
WWWPERTENCOM

mixed with new (make-up) water. By
injecting this tank with steam it is possible to de-aerate the water and remove
excessive oxygen in the feed water before it goes to the boiler.
As the water is heated and turned
into steam, free oxygen is released into
the steam. The heat also causes carbon
dioxide to be released from the solids
and the solids settle to the bottom of the
boiler. Other impurities, with proper
FKHPLFDOWUHDWPHQWÀRDWRQWKHVXUIDFH
of the water at the top in the area where
it turns to steam. A skimmer trough
is installed at the water level in the
boiler and the impurities are collected
and discharged from the boiler. This is
called continuous blowdown. A second
type of blowdown is done when valves
on the bottom of the boiler are opened
and quickly closed two to three times
HYHU\KRXUV7KLVÀXVKHVWKHVROLGV
that have settled out of the bottom of
the boiler.
Properly treated water in the boiler
should have tests in the following range:
x Dissolved oxygen - less than 7 ppm
(parts per million)
x PH level - 7-10
x Total hardness - 0 ppm
x Total alkalinity - 400 ppm max.
x Dissolved solids - 3,500 ppm max
x Silica - 150 ppm
x Oily matter - 1 ppm
x Total iron - .05 ppm max.
It is important that the boiler water be
checked daily and proper chemicals
added to achieve these levels. A scale
buildup on the water side of the boiler
WXEHV GHFUHDVHV ERLOHU HI¿FLHQFLHV E\
requiring more fuel to produce the
steam: 1/16 inch of scale requires 15%
more fuel, 1/8 inch of scale requires
20% more fuel and 1/4 inch of scale
requires 39% more fuel. Improperly
treated water also may lead to deterioration of piping, controls, and traps
throughout the system.
7KH ERLOHU QHHGV WR KDYH D ORZ ¿UH
or "non-using" level so that it doesn't
RSHUDWHDWKLJK¿UHDQGWKHQVKXWGRZQ
completely when no steam is required.
Operate the boiler at the least pressure

For more information, see Page 82.

50

December 2016 / World Grain / www.World-Grain.com



http://www.perten.com http://www.World-Grain.com

World Grain - December 2016

Table of Contents for the Digital Edition of World Grain - December 2016

World Grain - December 2016
Table of Contents
FROM THE EDITOR-IN-CHIEF - Trade advocacy faces tough views
CALENDAR OF EVENTS
Middle East Grain Conference is Feb. 25 in UAE
News review - Dwayne Andreas, longtime ADM leader, dies
Bunge pleased with milling business progress
Tiger Brands posts profit despite downturn in grains
Diversified business model boosts GrainCorp fiscal 2016 earnings
Bunge invests in grain port
ADM to build modern feed facility in Illinois
Cargill invests in new premix facility in the Philippines
GrainCorp joint venture building second Canadian grain terminal
Trans Cargo Terminal doubles capacity in Moldova
Miller Milling begins expansion of Saginaw, Texas, mill
Duffy named CEO of CME Group
Cargill donation to help Chinese villages with grain storage
Agrocorp to relocate Canadian headquarters
GRAIN MARKET REVIEW - Oilseds
COUNTRY FOCUS - The Netherlands
FEATURE - GAUGING BREXIT’S IMPACT ON GRAIN TRADING
FEATURE - IPPE amps up Latin America focus
FEED QUARTERLY - EUROPE’S feed industry re-examines its role
GROWING FROM FLOUR TO FEED
FEED OPERATIONS - Steam system and efficiencies
FEATURE - BUMPER CROPS, BUT THE WORLD NEEDS THEM
FEATURE - flour millers GATHER IN ETHIOPIA
Ethiopia’s Italian connection
MILLING OPERATIONS - Getting the most out of magnets
FEATURE - DEBUNKING GLUTEN, GRAIN MYTHS
SUPPLIER NEWS
PRODUCT SHOWCASE
WORLD GRAIN ARCHIVE
ADVERTISER INDEX/Reader Information Form International Faxback Program
World Grain - December 2016 - World Grain - December 2016
World Grain - December 2016 - 2
World Grain - December 2016 - 3
World Grain - December 2016 - 4
World Grain - December 2016 - Table of Contents
World Grain - December 2016 - FROM THE EDITOR-IN-CHIEF - Trade advocacy faces tough views
World Grain - December 2016 - 7
World Grain - December 2016 - Middle East Grain Conference is Feb. 25 in UAE
World Grain - December 2016 - 9
World Grain - December 2016 - News review - Dwayne Andreas, longtime ADM leader, dies
World Grain - December 2016 - 11
World Grain - December 2016 - Tiger Brands posts profit despite downturn in grains
World Grain - December 2016 - Diversified business model boosts GrainCorp fiscal 2016 earnings
World Grain - December 2016 - ADM to build modern feed facility in Illinois
World Grain - December 2016 - GrainCorp joint venture building second Canadian grain terminal
World Grain - December 2016 - Duffy named CEO of CME Group
World Grain - December 2016 - Agrocorp to relocate Canadian headquarters
World Grain - December 2016 - GRAIN MARKET REVIEW - Oilseds
World Grain - December 2016 - 19
World Grain - December 2016 - COUNTRY FOCUS - The Netherlands
World Grain - December 2016 - 21
World Grain - December 2016 - 22
World Grain - December 2016 - 23
World Grain - December 2016 - FEATURE - GAUGING BREXIT’S IMPACT ON GRAIN TRADING
World Grain - December 2016 - 25
World Grain - December 2016 - 26
World Grain - December 2016 - 27
World Grain - December 2016 - 28
World Grain - December 2016 - 29
World Grain - December 2016 - FEATURE - IPPE amps up Latin America focus
World Grain - December 2016 - 31
World Grain - December 2016 - 32
World Grain - December 2016 - 33
World Grain - December 2016 - 34
World Grain - December 2016 - 35
World Grain - December 2016 - FEED QUARTERLY - EUROPE’S feed industry re-examines its role
World Grain - December 2016 - 37
World Grain - December 2016 - 38
World Grain - December 2016 - 39
World Grain - December 2016 - 40
World Grain - December 2016 - 41
World Grain - December 2016 - GROWING FROM FLOUR TO FEED
World Grain - December 2016 - 43
World Grain - December 2016 - 44
World Grain - December 2016 - 45
World Grain - December 2016 - 46
World Grain - December 2016 - 47
World Grain - December 2016 - FEED OPERATIONS - Steam system and efficiencies
World Grain - December 2016 - 49
World Grain - December 2016 - 50
World Grain - December 2016 - 51
World Grain - December 2016 - FEATURE - BUMPER CROPS, BUT THE WORLD NEEDS THEM
World Grain - December 2016 - 53
World Grain - December 2016 - 54
World Grain - December 2016 - 55
World Grain - December 2016 - 56
World Grain - December 2016 - 57
World Grain - December 2016 - FEATURE - flour millers GATHER IN ETHIOPIA
World Grain - December 2016 - 59
World Grain - December 2016 - 60
World Grain - December 2016 - 61
World Grain - December 2016 - Ethiopia’s Italian connection
World Grain - December 2016 - 63
World Grain - December 2016 - 64
World Grain - December 2016 - 65
World Grain - December 2016 - MILLING OPERATIONS - Getting the most out of magnets
World Grain - December 2016 - 67
World Grain - December 2016 - 68
World Grain - December 2016 - 69
World Grain - December 2016 - 70
World Grain - December 2016 - 71
World Grain - December 2016 - FEATURE - DEBUNKING GLUTEN, GRAIN MYTHS
World Grain - December 2016 - 73
World Grain - December 2016 - SUPPLIER NEWS
World Grain - December 2016 - 75
World Grain - December 2016 - 76
World Grain - December 2016 - 77
World Grain - December 2016 - PRODUCT SHOWCASE
World Grain - December 2016 - 79
World Grain - December 2016 - 80
World Grain - December 2016 - WORLD GRAIN ARCHIVE
World Grain - December 2016 - ADVERTISER INDEX/Reader Information Form International Faxback Program
World Grain - December 2016 - 83
World Grain - December 2016 - 84
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http://digital.world-grain.com/sosland/wg/2005_04_01
http://digital.world-grain.com/sosland/wg/2005_03_01
http://digital.world-grain.com/sosland/wg/2005_02_01
http://digital.world-grain.com/sosland/wg/2005_01_01
http://digital.world-grain.com/sosland/wg/2004_12_01
http://digital.world-grain.com/sosland/wg/2004_11_01
http://digital.world-grain.com/sosland/wg/2004_10_02
http://digital.world-grain.com/sosland/wg/2004_10_02
http://digital.world-grain.com/sosland/wg/2004_10_01
http://digital.world-grain.com/sosland/wg/2004_09_01
http://digital.world-grain.com/sosland/wg/2004_08_01
https://www.nxtbookmedia.com