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World-leading Amine Purification Systemfor the Removal of Heat Stable Salts from Amine Circuits
AmiPur®-PLUS
Advanced Resource Recovery & Purification Solutions
AmiPur®-PLUS
Amine chemistry is commonly used in oil refining and gas processing for the removal of hydrogen sulfideand /or carbon dioxide in order to meet product specifications, emissions standards or other processrequirements.
During operation various contaminants enter, or are produced, within the amine circuit. Contaminants include heat stable salts (HSS), solid particulates, and hydrocarbons.
Increased contaminant concentrations result in a number of operational problems such as corrosion ofprocess equipment, greater foaming tendency, and less available amine. This can result in higher maintenance costs and reduced performance and capacity of the amine circuit.
Common Aminesthat can be treated by AmiPur®-PLUS
• DEA• MDEA• DIPA• DGA®
• MEA• Sulfinol®
• Flexorb®
Common Heat Stable Salts (HSS)that can be removed by AmiPur®-PLUS
• formate• acetate• carbonate• sulfate• bicine
Continuous purification of the amine solution results in stable, optimalperformance of the amine circuit with low operating costs.
Controling Contamination through Continuous Amine Purification
Batch vs. ContinuousBatch treatment such as purging, off-site treatmentoron-site mobile services results in continuouschanges to the amine circuit characteristics (i.e.corrosion, filtration requirements, foamingtendency, etc.) and operating challenges.
Continuous treatment results in low, stable HSS concentration with predictable amine characteristics.The amine circuit can be optimized for reliable,stable, economical operation.
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0Time
HSS
wt.%
as
MD
EA BatchTreatment
Continuous Treatment
Complete System... Continuous Solution
• chloride• oxalate• phosphate• thiosulfate• thiocyanate
Examples of equipment corrosion in amine circuits:Reduced HSS = Reduced Corrosion of Process Equipment
Actual client data (US client) shows significant reductionin HSS (from about 5% to about 0.5%) which correspondsto a significant reduction in corrosion as measured bycorrosion probes (from about 100 mpy to < 10 mpy).Actual client data (China client) shows corrosion ratesmeasured before (typical range 40-100 mpy) and after(typical range 0-2 mpy) operation of AmiPur®-PLUS toreduce HSS concentration.
Reason: Heat Stable Salts (HSS) accelerate corrosion by destroying the FeS passivation layer and byformation of acids and metal complexing chemicals.
Reduced corrosion by-products•mean less fouling of heat exchangerand contactor surfaces which im-proves heat transfer and so im-proves energy efficiencyCosts associated with cleaning of•fouled equipment are reduced oreliminatedLean/Rich Heat Exchanger Lean/Rich Heat Exchanger
Before AmiPur®
Installation
Before
After
After AmiPur®
Installation
Valuable Benefits
Reduces HSS, Corrosion, Costs•Ensures Optimal Amince Circuit•Performance
Example of corrosion in Lean/RichHeat Exchanger
Filtration Costs include:
• Cost of replacement filter cartridges
• Labor to replace filter cartridges
• Disposal cost for dirty cartridges
• Associated amine losses
Plus safety concerns related to handling ofcartridges containing iron sulfide (FeS).
BenefitReduced HSS = Reduced Amine Filtration CostsReason: The most significant portion of the “dirt” in amine circuits is iron sulfide (FeS) which is a corrosion by-product. Reduced corrosion results in less dirt build-up on filters and longer filter life.
Actual client data (U.S. refinery) indicates a significant reduction (90%) in filter changesafter AmiPur® installation
After AmiPur®
InstallationBefore AmiPur®
Installation
After AmiPur®
InstallationBefore AmiPur®
Installation
HSS Reduction... Cost-cutting Benefits
Reduced HSS = More Active Amine Available
Reduced HSS = Improved Absorber Economy andPerformanceReason: Absorber economy and performance can be severely affected by foaming of the amine solution in the absorber. HSS and corrosion by-product solids make foaming more severe.
Reason: Heat StableSalts combine withamines and reduce theamount of amineavailable for the process.
Reduced foaming is observed when HSSconcentration is controlled. Absorber economy andperformance are improved as follows:
• Reduce amine purchases to replace amine losses due to foaming.
• Improve reliability of meeting absorberspecifications and eliminate off-spec production which may require blending
orreprocessing.
• Operate amine absorber at maximum capacity - no need to derate due to
foaming concerns.
Indian Refinery Experience• Refinery and amine circuit commissioned in 1998• By 2001, HSS had increased to 3.5% and foaming was a severe problem• AmiPur® purchased and commissioned in 2002Client Quote: “We are extremely satisfied withthe AmiPur® unit. Our HSS in the system hascome down from 3.2% to 0.9% in the last 4 1/2months of operation. I am just a happy man nowafter three years of foaming, loss of amine, etc.”
US Refinery ExperienceClient Quote:“...height/breaker parameters changes from 450/23 to 50/4 and weobserved less foaming which allowed us to eliminate the use of antifoaming additives...”
Amine Solution
35% available MDEA
30% available MDEA
+ HSS(1.6% formate)
≡ 5% HSS expressed as MDEA
HSS bound amine
14.3% reduction in available MDEA
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HSS Reduction... Cost-cutting Benefits Reduces Filtration Costs•
Improves Absorber Economy •Ensures More Amine Available• Amine - before and after
AmiPur installation
Benefit
Benefit
AmiPur®-PLUSWhat is it?The Eco-Tec AmiPur®-PLUS is a compact, automated, skid-mounted equipment package which is integrated into the aminecircuit. It operates continuously treating a slip stream after thelean amine cooler and filter in order to remove HSS from thecircuit at a sufficient rate to offset the incursion rate (build-up) ofHSS. This keeps HSS at a constant low level.
AmiPur®-PLUS is available in a range of standard models matchedto provide the HSS removal capacity requirements for any site.Model selection and capacity requirements are determined by Eco-Tec based on data provided by the client in an engineeringsurvey form.
How it worksAmiPur®-PLUS uses a proprietary,highly-efficient ion exchangeprocess known as Recoflo®.Amine solution from a slipstream passes through a cartridge filter and ion exchangeresin bed on the AmiPur®
equipment skid.
Heat Stable Salts are removedfrom the amine solution andexchanged onto the resin, whilethe purified amine solution isreturned to the circuit. Aftertreating a fixed volume ofsolution, the unit automaticallystops processing amine solutionfor a few minutes while it runs through a regeneration sequence during which water and caustic arepassed through the resin bed to remove HSS from the resin and direct it to waste. Once theregeneration sequence is completed, the unit resumes treating amine solution.
Str
ipp
er
Ab
sorb
er
FlashDrum
LeanFilter
RefluxDrum
Treated Gas
Acid Gas
Lean Cooler
Feed Gas
RichAmine
Lean/RichExchanger
Condensate
Water
NaOH
Lean Amine
AmiPur®-PLUS
Waste
Purified Lean Amine (Product)
Condenser
Over 60 Installations... Across 18 Countries
Advanced TechnologyAmipur®-PLUS is based on Eco-Tec’s proprietary,proven, Recoflo® ion exchange technology.Recoflo® incorporates design features, such as:
Fine ion exchange resin beads for maximum •surface area, smaller resin volumes and smaller equipment
Short, packed resin columns for efficient liquid •resin contact and minimum waste generation
Counter-current regeneration for minimum •chemical (caustic) consumption
Eco-Tec continues to develop productimprovements and new processes at its in-house Research and Development facility
Technical Service and SupportOn-site commissioning supervision, •performance demonstration, and operator training
Performance monitoring and technical •support program (Eco-SERV™)
24/7 telephone access to technical services •support
Extensive spare parts inventory for next day •shipment of most replacement parts
Eco-Tec has•been buildingRecoflo® ion exchange sys-tems for in-dustrialchemical purificationapplicationssince 1970with more than 2,000 systems installed in morethan 60 countries. (Above: Amipur for a facility in Texas, USA)
More than 60 AmiPur® systems have been •installed in refineries and gas plants world-wide including a number of repeat clients.
Eco-Tec is the leading supplier of continuous •amine purification systems in the world.
Quality Design and ConstructionISO 9001 registered design and manufacturing •facility
Built to global•oil refinery andgas processing standards
Adaptable to•meet specificcompany orrefinery specifications
Complete assembly and factory testing prior to •shipment
Compact, skid-mounted construction for minimal •installation requirements
Proprietary Ion Exchange Technology•Minimal Installation Requirements•Onsite Commissioning Supervision•
Proven Performance
All statements, information and recommendations contained herein are, to our knowledge, true and accurate. However, no guarantee or warranty is given, expressed or implied.Nor shall any statement, information or recommendation constitute a representation unless set forth in an agreement signed by Eco-Tec. Recoflo and AmiPur are registered trade-marks of Eco-Tec Inc.. Eco-SERV, HSS-PAK, GlycoPur, and BgPur are trademarks of Eco-Tec Inc.. Flexsorb is a registered trademark of Exxon Mobile Corporation. Sulfinol is a regis-tered trademark of Shell International Petroleum Company Limited. DGA is a registered trademark of Huntsman Petrochemical Corporation. All rights reserved.
eco-tec.com
For more information, or to request a quick proposal, visit our website or contact:
Over 60 AmiPur® Installations Worldwide... and Counting
Prosep Technologies LimitedUnit 6A, Zone 4, Burntwood Business ParkBurntwood, StaffordshireEngland WS7 3XDPhone: +44(0)1543 675731Fax: +44(0)1543 [email protected]
Eco-Tec Inc.1145 Squires Beach RoadPickering, OntarioCanada L1W 3T9Phone: (1) 905-427-0077Fax: (1) [email protected]
Eco-Tec Solutions - IndiaNo 5 City Center, 930 Synagogue Street, Camp, PUNE, India 411 001Phone: (91) (020) 64001056Fax: (91) (020) [email protected]
Eco-Tec Western Canadian OfficeSuite 325, 400 5th Avenue SWCalgary, AlbertaCanada T2P 0L6Phone: (1) 403-303-2855Fax: (1) [email protected]
BRAP200Represented in Russia by Lortex-EcoOffice 220, Nagornaya Street 20/1Moscow, 117186Russian FederationPhone: +7(495)775-38-45Fax: +7(499)[email protected]
Eco-Tec systems incorporate advanced, proprietary designs that provide resource-recovery and purificationsolutions to industries around the world. We are designers, developers, and builders of equipment for industrialwater treatment and purification of chemicals and gases – celebrating over 40 years of manufacturing excellence.Our products provide clients with improved performance, economy, and reliability in their operations, whilefacilitating environmentally responsible approaches to using natural resources. In business since 1970, Eco-Techas supplied over 2,000 systems to more than 60 countries.
