SELEXOL Booster. Boosting the Performance of Physical Absorption Processes

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1 SELEXOL Booster Boosting the Performance of Physical Absorption Processes

2 Physical solvents are often used in treating both natural gas and synthesis gas streams at high pressures. In these scenarios, physical absorption processes can provide capex and opex advantages over amine treating systems. Many of these systems are successfully operating in the industry today. To maximize value, operators at facilities treating these high-pressure gas streams seek to continually increase asset efficiency. In addition to using these physical solvents, there are several methods to improve efficiency at existing plants, including: Reduced energy consumption Increased gas-processed throughput Maintained asset integrity With rapid gas production growth worldwide, there is now another opportunity for operators to increase value from existing assets. Dow is proud to offer SELEXOL Booster, an extension of its well-known line of SELEXOL Physical Solvents. This proprietary physical solvent has the capability to enhance overall operator value in several ways. Application in existing gas processing facilities can: Increase acid gas removal capacity at existing facilities by up to 20% Reduce the circulation rate of a system by up to 20% Enable the unit to reach a specification based on changing gas needs SELEXOL Booster Offers Distinct Advantages Over Commodity Physical Solvents Used in Gas Processing: Enhanced CO 2 Absorption Rate Increased Gas Processing Capacity Higher Revenues Maintained Operating Expenditures 2

3 Experienced Technical Service to Optimize Operations With more than 250 combined years of experience in gas treating, the Dow Oil & Gas technical service team can help to customize a solution based on individual needs. Our simulation capabilities can effectively evaluate solutions for on-site conditions. In fact, our advanced simulator is continually and consistently refined through the incorporation of real customer plant data. Dow also owns and operates a pilot plant that can replicate on-site conditions to further evaluate potential solutions. Experience You Can Trust Dow has been helping customers meet their gas-treating needs for more than 65 years. Backed by more than 900 global references in gas treating, Dow Oil & Gas can help maximize value for our customers through extensive industry experience, application knowledge and chemistry expertise. Impact of SELEXOL Booster on existing plant performance Examples Inlet gas composition, site-specific economics and the ability to meet gas CO 2 specifications must all be considered when evaluating optimization of an existing plant. Two sample plant schemes are shown on page 4 to demonstrate the possible benefits of using SELEXOL Booster from Dow. Our experienced technical team can perform an on-site analysis to evaluate potential impact at each facility and make site-specific recommendations to help operators maximize value. 3

4 Case 1 & 2: Natural Gas Treatment Inlet Gas Conditions: 1000 psia, 80 F 65% CO 2, 35% CH 4 SELEXOL Booster Impact: Case 1: ~18% reduction in CO 2 Spec Case 2: 19% reduction in solvent flow rate PUMP CONTACTOR COOLER COMPRESSOR DEPG* (Base Case) SELEXOL TM Booster Case 1 SELEXOL TM Booster Case 2 CO 2 Spec % Lean Solvent Flow Rate *Dimethyl ether polyethylene glycol FLASH 1 FLASH 2 FLASH 3 Case 3: Syngas Treatment Inlet Gas Conditions: 37.4 bar, 17.3 C CHILLER STRIPPER 18% CO 2, 61% H 2, 21% N 2 CONTACTOR KNOCK-OUT COOLER COMPRESSOR PUMP COOLER SELEXOL Booster Impact: Case 3: ~32% reduction in solvent flow rate TURBINE WATER BLOWER DEPG* (Base Case) SELEXOL TM Booster Case 3 CO 2 Spec % Lean Solvent Flow Rate 1.68 FLASH FLASH PUMP AIR *Dimethyl ether polyethylene glycol 6 4

5 Storage and Handling SELEXOL Booster is usually stored and handled in carbon steel equipment. It is also compatible with stainless steel. Aluminum, zinc or galvanized steel, copper and its alloys should NOT be used for any storage and handling equipment. This product can become viscous in colder climates and should be stored inside a warm building or in a heated, insulated tank. Pour points for pure solutions are near -50 C (-58 F). A centrifugal pump is suitable for transfer service, assuming the temperature of the product is sufficiently above its pour point. A rotary or gear pump is suggested for lower temperature transfers. Adequately sized piping should be used to handle the maximum encountered viscosity. Valves, piping, etc. are usually constructed of steel. Type 304 stainless steel, spiral wound Grafoil gaskets for flanges and Grafoil packing for valves are recommended. Consult the safety data sheet for additional information prior to use. 5

6 To Learn More U.S., Canada, Mexico: Phone: Fax: Latin America: Phone: Fax: Europe, Middle East: Phone Toll Free: * Phone: Fax: Asia-Pacific: Phone Toll Free: * Phone: Fax: Middle East (Dubai): Phone: Fax: North Africa (Cairo): Phone: Fax: *Toll free service not available in all countries. For more information, visit Notice: No freedom from any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer s use and for ensuring that Customer s workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to Dow or the Company mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. Printed in U.S. March 2012 Trademark of The Dow Chemical Company ( Dow ) or an affiliated company of Dow Form #: BBI