PETROSWEET HSW7336 Hydrogen Sulfide ... - Baker Hughes

Product Overview
PETROSWEET HSW7336 Hydrogen Sulfide Scavenger
H 2
S scavenger for H 2
S tower applications
Application
The PETROSWEET HSW7336 hydrogen
sulfide (H 2
S) scavenger is a fast-acting
product for tower applications where
traditional triazine H 2
S scavengers typically
form intractable solids and mineral scales.
The PETROSWEET HSW7336 H 2
S scavenger
is specifically designed to eliminate
these solids resulting in fewer tower
cleanouts, packing replacements and
increased production.
PETROSWEET HSW7336 scavenger
represents a step change alternative to
high pH hydrogen sulfide scavengers such
as triazine.
PETROSWEET HSW7336 H 2
S scavenger is
compatible with most brines, including
brines with high total dissolved solids
and calcium. The spent product is also
compatible with most brines, eliminating
the need for a separate holding tank
for the spent H 2
S scavenger. This means
that the spent product will not cause
mineral scales to form. While it does not
form intractable solids like triazine-based
products do, the spent product may
produce small amounts of solids that are
readily removed with a hot water wash.
Typical Properties
Specifi c gravity
1.05
at 60°F (15.6°C)
Typical density
at 60°F (15.6°C)
Flash point, SFCC
Pour point
Viscosity, ASTM D-455
at 60°F (15.6°C)
at 40°F (4.4°C)
8.8 lbm/US gal
(1050 kg/m 3 )
210.2°F (99°C)
14°F (-10°C)
1.7 cP
2.4 cP
Orifice Diameter (in)
Chemical Injection Rate
(Gallons per Day)
0.006 10 - 27
0.008 20 - 51
0.010 30 - 78
0.015 65 - 168
0.020 118 - 302
0.028 230 - 590
0.032 316 - 820
Table 1. Representative flow rates for sizing
impingement and misting nozzles with pressure drop
between 60 -100 psi
For best results, PETROSWEET HSW7336
H 2
S scavenger should be used in tower
applications. It can be applied at a rate
of 0.48 gallons (1.82 L) per ppm of H 2
S
to be scavenged per mmscf of gas. This
dosage rate may vary depending on system
conditions, such as temperature and
produced water carryover. In some cases
foam has been observed; in the event of
foaming, application of a small amount
of an appropriate Baker Hughes antifoam
product will easily resolve the issue.
Where this product is injected continuously
for pipeline applications, we strongly
recommend the use of an atomizer
to facilitate better mixing and higher
efficiencies. Atomizers should be sized to
create a high percentage of droplets with
low particle diameters. The following table
is a guide for selecting an impingement,
fog or misting nozzle.
For instances where slugging, separator
overflow or other system upsets cause high
H 2
S readings, a second chemical pump
injecting a compatible H 2
S scavenger, such
as PETROSWEET HSW7334 hydrogen
sulfide scavenger, can be started to reduce
the H 2
S readings back to acceptable levels.
Applications
• Conventional gas
• Unconventional gas
Features and Benefits
• Significantly reduced intractable solids
compared to spent triazine
– Fewer tower cleanouts
– Lower operating cost
– Reduced lost production due to downtime
• Solids are water soluble
– Reduces cost of tower cleanout
– Eliminates the necessity of vessel
entry for vessel cleanout
– Resulting solution is compatible
with disposal water
• An excellent choice for partial H 2
S scavenging
where operators are required to scavenge
down to only a limited amount of H 2
S.
– Can reduce the program cost
– Will not generate solids caused by
over spending triazine products
• Spent product is compatible with most brines
– Does not require a dedicated spent
product tank
– Eliminates the cost of trucking and
disposal of spent product
• Will not form mineral scales
– Tower cleanouts due to mineral
scale buildup are eliminated
– No need to co-inject scale inhibitor
– Lower operating cost
• Spent product has a low freeze point
(-5°F/-20.5°C) compared to triazine
(50°F/10°C)
– Does not require methanol injection
to maintain fluidity of spent product.
• Does not contain nitrogen
– Will not cause amine salt corrosion
in refineries
• Low toxicity profile
• Non-DOT regulated (United States)
• No substitution warnings (UK)
– Much more acceptable to
government regulators than triazine
– Lower risk of environmental
contamination

Materials compatibility
Suitable:
Metals: 304 stainless steel, 316 stainless
steel, admiralty brass, copper
Plastics: HD polyethylene, HD
polypropylene, linear
polyethylene, PVC, TEFLON ®
Elastomers: Buna N, EPDM, HYPALON ® ,
neoprene, VITON ®
Not suitable:
Metals: Aluminum
Materials suitability is based on analysis of test
results obtained under specified laboratory conditions.
All materials selection should be based on actual
application. Testing results for materials will be made
available on request.
Safety and handling
Before handling, storage or use, review the
Safety Data Sheet (SDS) for guidance.
PETROSWEET HSW7336 H 2
S scavenger
should be transported and stored in stainless
steel tanks with a vented cap. Neither drums
nor pails should be used for storage or
transport. Tanks should not be shipped in a
closed container. The recommended shelf life
of the product is 6 months.
Baker Hughes/Baker Petrolite 24-Hour
Emergency Hotline:
1-800-424-9300 (CHEMTREC) US
1-613-996-6666 (CANUTEC) Canada
www.bakerhughes.com
PETROSWEET is a trademark of Baker Hughes Incorporated. TEFLON is a registered trademark of E. I. Du Pont de Nemours and Company. HYPALON and VITON are registered trademarks
of DuPont Performance Elastomers L.L.C.
Disclaimer of Liability: This information is provided for general information purposes only and is believed to be accurate as of the date hereof; however, Baker Hughes Incorporated and
its affiliates do not make any warranties or representations of any kind regarding the information and disclaim all express and implied warranties or representations to the fullest extent
permissible by law, including those of merchantability, fitness for a particular purpose or use, title, non-infringement, accuracy, correctness or completeness of the information provided
herein. All information is furnished “as is” and without any license to distribute. The user agrees to assume all liabilities related to the use of or reliance on such information. BAKER
HUGHES INCORPORATED AND ITS AFFILIATES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES FROM ANY CAUSE
WHATSOEVER INCLUDING BUT NOT LIMITED TO ITS NEGLIGENCE.
© 2013 Baker Hughes Incorporated. All rights reserved. 38272. BPPOHSW7336. 03/2013