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Cleaned metal surface
showing the effects of oxygen corrosion |
DESCRIPTION
WSB EB is a
highly effective combination product on basis of liquid blend of oxygen
scavenger and metal passivator.
WSB EB is an oxygen scavenger that works rapidly,
effectively and safely to passivate deaerators, feedwater systems and
boilers. It also reduces feedwater iron levels and insulating iron
deposits on boiler tubes to help minimize fuel wastage.
The major ingredients in WSB EB are sodium
erythorbate as oxygen scavenger and metal passivator, di-hydroxy-benzene
(Hydroquinone) as catalyst, and Morpholine as decharacterizing agent.
What
are erythorbates?
Erythorbates are food ingredients that inhibit the change of flavor
and color in food when exposed to air, such as when a cut apple is
exposed to air.
Produced from sugar, erythorbates are similar in chemical structure
to vitamin C.
Two forms of erythorbates, erythorbic acid and sodium erythorbate,
are commonly used in hot dogs, luncheon meats, cured meats, fresh
pork, poultry, frozen bananas, dehydrated apples and other foods.
Erythorbates are classified by the FDA as GRAS (absolutely safe as
food ingredients), and have been used for more than 30 years.
Both erythorbates are reacting with oxygen, for final byproducts
carbon dioxide and intermediate lactates. They are also reacting with
Ferric ion to Ferrous ion and Cupric to Cuprous. They are passiivating
Iron by reducing Fe 2O3
to Fe3O4.
BENEFITS
WSB EB benefits include:
 | Highly effective, liquid organic, non-steam volatile oxygen
binding media on basis of sodium ascorbate. |
| This product is especially suitable for use in non thermally
deaerated feed waters, in the food and pharmaceutical industry and
for direct steaming. |
| Increases equipment life by minimizing pitting corrosion. |
| Reduces energy cost by minimizing insulating iron oxide deposit. |
| Reduces deterioration of the steam and condensate lines by
minimizing oxygen infiltration from the boilers. |
| The catalyst accelerates oxygen removal. |
| Helps protect the pre-boiler system and the boiler from
unscheduled downtime due to oxygen corrosion |
| Enhances metal passivation of iron and copper, minimizing metal
corrosion and resultant boiler deposition; can result in extended
equipment life |
| Does not require specialized feed systems — liquid product
minimizes housekeeping and mixing problems |
| Contributes no measurable solids to the boiler, so blowdown levels
on sulfite programs can often be reduced — a significant energy
savings |
| Highly effective alkalization media and corrosion inhibitor for
steam and condensate systems. |
| Non contains free caustic, so does not induces carry over or
caustic attack, under overfeed conditions, or when incoming oxygen
levels will be lowered |
| Ingredients are in compliance with FDA and USDA regulations
pertaining to boiler water additives |
| The Catalyst and the Decharacterizing agent complies with FDA
(Food and Drug Administration) regulations, pertaining to boiler
water additives. |
| Non induces dangerous or corrosive gases to the steam, like sulfur
dioxide, acetic acid, MEK or Hydrazine. |
| Ready to react as it is and does not require thermal activation
like Meta Bisulfites, Methyl Ethyl Ketoxime and Carbohydrazide does. |
APPLICATIONS
WSB EB Boiler Treatment is used to treat steam boilers at
pressures up to 1000 psig.
DOSAGE
WSB EB dosage varies according to make-up, feedwater
temperature, whether a dearator is used or not, etc.
As a general rule, feed WSB EB at the level of 25 ppm per ppm
Oxygen to be removed. For Deaerated feed water, use 1 ppm of WSB EB
in feed water.
Dosages should be adjusted to maintain a residual erythorbate range
of 0.5 - 5 ppm in boiler.
For optimum protection of your system, consult your Water Services
Ltd representative for other recommendations.
FEEDING
WSB EB must be fed into the feedwater tank or dearator (below
the water line). Entrance to the feed point must be via a stainless
steel quill extending beyond the internal surface of the tank.
WSB EB should be fed neat, however where dilution is required
use cooled condensate (<100 o F) or softened water.
WSB EB should be fed via a chemical pump, in proportion to steam
load or water make-up, using a water meter contactor and timer assembly,
to prevent wild fluctuations in the chemical levels.
Material Compatibility - Polyethylene, mild steel, and stainless
steel. Do not use yellow metal alloys, aluminum, and zinc.
MATERIAL SAFETY DATA SHEET
For information concerning typical properties, health hazard,
flammability, reactivity, please consult the product material safety
data sheet.
Handling
precautions
Wear suitable gloves and safety goggles. In case of contact
immediately flush with plenty of water. After eye contact seek medical
advice.
In case of spillage, absorb with sand or other absorbent materials
and sweep up. Then flush the area with water.
Before use review the Material Safety Data Sheet for additional
information.
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