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Fractionation Research Inc. (FRI) is a non-profit industrial research consortium that investigates the performance of the mass transfer devices, such as trays and packings, used in industrial-scale distillation columns. It was formed to pursue research that was too expensive for any one company and its objective is to provide information for use in designing more economical distillation and absorption systems.

FRI is supported by memberships which include the largest petroleum refining, petrochemical, and engineering-construction companies in the world.

FRI moved from its original location in California to its current location at the Oklahoma State University (OSU) in Stillwater, Oklahoma in 1991.

History
FRI was formed by petroleum refining, petrochemical and engineering-construction companies to perform large-scale research in distillation. It was founded in 1952, promoted by Karl Hachmuth and T. B. Hudson of Phillips Petroleum Company in Bartlesville, Oklahoma. Hachmuth was a well-known researcher of the performance of distillation equipment. He realized that such research was beyond the resources of any single company, and proposed that a cooperative distillation research organization be formed. Hudson became the first president of FRI.

In 1954, FRI contracted to use facilities available at the headquarters of C. F. Braun & Co., a large and respected engineering-construction company in Alhambra, California. The first industrial-scale distillation tower, equipped for use as a research system, had a diameter of 4 feet (2.22 metre) and was constructed and began operation in that same year. By 1963, an extension to that research tower with a diameter of 8 feet (2.44 metre) had been added along with another tower with a diameter of 4 feet (2.22 metre) that was constructed for high-pressure operation. Operations continued at Alhambra until 1989, when the C.F. Braun company was acquired by another engineering-construction company (Halliburton, Inc.). FRI subsequently moved its facilities to Oklahoma State University and began operations there in 1991. FRI was initially envisioned as a corporation with a limited life unless extended by the membership. The first operation was considered to be a 5-year research program. Since then, FRI's life has been extended, in increments of 3 or 5 years, because the members continued to see important research projects of interest.

Research programs
FRI has tested various types of fractionation trays and packings (both generic and proprietary designs), with the objective of developing correlations for predicting tray efficiencies and pressure drops. This information is needed to design fractionators, absorbers and strippers. It has also tested performance of other column internals such as liquid distributors. It periodically reports its findings to the member companies.

The OSU library maintains an unrestricted collection of FRI progress reports, plant tests, topical reports, consultants’ reports and annual reports that were issued during the period 1954 – 1970. FRI has also produced a number of unrestricted instructional films and videos, which are listed on its home page. These are available to non-members.

Membership
Initially, fifteen companies signed agreements with FRI and grew to 37 by the first stockholder meeting in November 1952. Membership continued to grow to a peak of 94 companies in 1995. Membership declined thereafter to 67 in 2008, primarily due to mergers. At first, nearly all FRI members were companies in the United States. However, by 2008 a majority of the members were based in countries other than the United States.

Organization, staff and annual budget
Each member company is entitled to put one representative on the Board of Directors. The Board then elects an Executive Committee that directs the detailed business through the President and the Secretary of the company. The president is elected by the Board of Directors.

A Technical Advisory Committee, which also has one representative from each member company, oversees the research program. This committee elects a chairman and a smaller Technical Committee. The Technical Committee works with the FRI Technical Director (a full-time employee of FRI) to execute the research projects performed by the staff. Full-time staff currently includes eight technicians and six chemical engineers.

As of 2009, FRI had a permanent staff of 18 people and an annual budget of about $2,500,000.