Dennis Leppin, P.E.
Gas Technology Institute
1700 S. Mount Prospect Rd.
Des Plaines, Illinois 60018
Title:
Senior Institute Engineer and Institute Fellow, Energy
Conversion/Gas Processing Research Group
Phone Number: 847-768-0521 Mobile: 847 682-2566
E-mail Address: dennis.leppin@gastechnology.org
Education:
University Degree Area of Specialization Year
University of Chicago, Graduate School
of Business
M.B.A. Business, Finance 1979
City College of New York, CUNY
Graduate Division
M.E. Chemical Engineering 1973
City College of New York B.E. Chemical Engineering 1971
(01/11 - Present), Gas Technology Institute, Des Plaines, IL – Senior Institute Engineer (P/T since 11/13)
o New business development responsibility and technology commercialization planning.
o In-house gas processing expertise
o Consulting Activities
o Lead major proposal activities
o Safety leadership activities
(08/00 - 12/10), Gas Technology Institute, Des Plaines, IL – Director, Gas Processing Research
o Managed a 12 person R&D group in the field of natural gas processing, hydrates for flow
assurance, and CO2 sequestration with 4 full-time professional staff members with annual
budget of $2-3 MM and with strategic planning, P/L and personnel responsibility for group
operations.
o New business development responsibility and associated licensing activities.
o Lead an industry JIP in Direct Injection Scavenging Research.
o Product Manager for Morphysorb technology for acid gas treating.
o Technoeconomic evaluations for various clients, process development, technology evaluations,
expert witness assignments
(11/94 – 7/00), Principal Product/Project Manager, Gas Processing
o Develop program strategy in natural gas processing.
o Business plan development, gas processing alliance development. Review gas processing
business deals.
o Interface with licensee representatives.
o Manage key contracts in product development. Special Assignment – lead a project to develop
an Access97 database to track project/product status (adopted by 2 business units) and
associated website development to support effort.
o Served as compensated expert witness in three gas processing-related lawsuits involving major
firms.
o Led an international biennial conference in small-scale S recovery.
o Served on Laurance Reid Conference Board of Visitors and GRI Gas Processors Association
official representative.
(08/93 - 11/94), Senior Product Manager
o Handle technology transfer, commercialization strategy, licensing and intellectual property
matters for a suite of gas processing products including software and gas processing processes
in natural gas conditioning, dehydration emissions control and sulfur removal and recovery.
o Provide expert advice in gas processing to GRI customers and the general public.
o Engage in Technology Transfer activities such as conferences and workshops as a key
presenter and leader.
o Interface with contractors, member company clients, and advisory groups.
o Team leader or project manager for 70% of gas processing budget. Supervise outside
contractors and review work for quality.
o Develop budget and plans for teams.
(11/90 - 08/93), Sr. Project Manager, Gas Processing
o Developed and managed a portfolio of projects in gas processing.
o Technology transfer and research management.
(11/87- 11/90), Manager, Surface Coal Gasification
o Program management responsibility.
o Supervision of one employee.
(11/81- - 11/87), Project Manager/Senior Project Manager
o Managed a portfolio of projects in coal gasification.
o Primary interface for the DOE/GRI and EPRI/GRI cofunded efforts in coal gasification.
(02/74- - 11/81), Research Supervisor
o Supervised a work group engaged in process development of coal gasification processes.
o Designed laboratory and pilot plant experiments and equipment and analyzed and reporteddata.
o Interfaced with client and additional performing organizations.
Publications:
From 1974 to present, Mr. Leppin has over 150 Technical and Program Review Published Articles.
Leppin, D., “Technology Options and Economics for Unconventional Shale Gas and Gas Liquids
Monetization”, paper presented at World Gas Conference 2012, Kuala Lumpur Malaysia, June 2012
Fisher, K.S., D. Leppin, R. Palla, A. Jamal, “Process Engineering for Natural Gas Treatment using
Direct-Injection H2S Scavengers”, GasTIPS, Spring 2003, Vol 9, Number 2, pp. 12-17.
Fisher, Kevin S., Joseph E. Lundeen, and Dennis Leppin. “Fundamentals of H2S Scavenging for
Treatment of Natural Gas.” Paper presented at the 9th GRI Sulfur Recovery Conference, October 24-27, 1999
Arun Basu, Howard Meyer, Dennis Leppin, Jim Zhou and Ajay Makkuni, “UCSRP: A Flexible Sulfur
Removal Process for Sweetening Natural Gas” presented at Fuels and Petrochemical Division, 2012
AIChE Spring Meeting (April 2012), Houston
Fisher, K.S. and D. Leppin. “Results of GRI Field Testing of H2S Scavenging Process.” Paper
presented at the 45th Annual Laurance Reid Gas Conditioning Conference, Norman, Oklahoma,
February 26 – March 1, 1995.
Acid Gas and Trace Contaminant Removal from Synthesis Gas Produced by Fluidized Bed
Gasification of Wood Using the Morphysorb® Process in the GTI Flex Fuel Test Facility,
tcbiomass2013, Chicago IL, September 2013.
Glenn Kowalsky, Duke Energy Gas Transmission, Calgary, Alberta, Canada, Dennis Leppin, Raj Palla
and Dr. Aqil Jamal, Gas Technology Institute, Des Plaines, IL, USA and H. M. Hooper, Uhde
Corporation of America, Houston, Texas, USA “Performance of Morphysorb® Solvent in a
Commercial Acid Gas Treating Plant”, 53rd Annual Laurance Reid Gas Conditioning Conference, 23-
26 February 2003, Norman, Oklahoma, USA
Bair, W.G., D. Leppin, and A.L. Lee, “Design and Operation of Catalytic Methanation in the HYGAS
Pilot Plant”, in Advances in Chemistry Series, No. 146, 1974.
Lynn, S., Vasquez, D, Quinlan, M. And D. Leppin, “New Approach to Sulfur Removal could Reduce
Costs”, GasTIPS, Winter 2002, Vol 9, Number 1, pp. 13-20.
D. Leppin, “U-Gas Technology Status II”, in Advances in Coal Utilization Technology IV, April 1981,Denver CO.
D. Leppin and G. N. Sahay, “Cold-Model Studies of Agglomerating Gasifier Discharge Behavior” in
Fluidization, J.R. Grace and J. M. Matsen, eds., Proceedings of the 1980 International Fluidization
Conference.
Gary J. Reading and Robert L. McKee, The M.W. Kellogg Company, Houston, Texas, Dennis Leppin,
Gas Research Institute, Chicago, Illinois “SeleXpert™: Knowledge-Based System for Sour Gas
Treating and Sulfur Recovery Process Selection”, GPA 73rd Annual Convention, New Orleans, March1994.
D. Leppin, “Using Aspen HYSYS to Model Catalytic Methanation of Synthesis Gas in Coal-to-SNG
Applications” presented at 2008 Aspen User Conference USA, April 9, 2008, Houston, Texas.
Donald V. Nicol, Nicol & Associates, Richardson, Texas and Dennis Leppin, Gas Research Institute,
Chicago, Illinois “Lithium Bromide Absorption Chilling, a Viable Alternative for Field Gas
Conditioning”, paper presented at GPA 72nd Annual Convention, San Antonio, March 1993.
Patents or Copyrights:
Ultrasound-assisted liquid redox absorber, United States Patent 5,866,089 and
5,876,677
Process for separating carbon dioxide and methane, United States Patent 6,946,017
Mercury removal from gaseous process streams, United States Patent 6,475,451
Absorber for liquid redox processes, United States Patent 5,958,360
Water and organic constituent separator system and method, United States Patent
5,545,296, and 5,531,866
Process for Separating Carbon Dioxide and Methane, United States Patent 6,946,017
B2
Method for creating a Gas Liquid Contact Area, United States Patent, 7,544,340 B2
Sulfur Recovery Process, United States Patent, 7,811, 544 B1
Process and system for removing sulfur from sulfur-containing gaseous streams,
United States Patent 8,241,603 B1 A
Co-production of fuels, chemicals and electric power, United States Patent
8,268,896
Method for producing methane from biomass, United States Patent 8,915,981
Synergistic Activities:
1. Registered Professional Engineer (Illinois)
2. Recognized authority on small-scale sulfur removal
3. Senior Advisor, Laurance Reid Gas Conditioning Conference
4. Advisor, Sour Oil and Gas Treating Conference (SOGAT) and Carbon Capture, Utilization and Storage Conference (CCUS)