Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1998-01-13
2000-02-08
Wilson, James O.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568862, 568858, C07C 2726
Patent
active
060230037
ABSTRACT:
A process and a system is disclosed for recovering glycol from glycol and brine mixtures produced from oil or natural gas wells that combines energy efficiency with a capability for handling salt and other solids contained in the mixture. The system comprises three effect evaporator systems in series. Each effect evaporator system comprises an evaporator, a separator vessel, product pumps, and a solids removal system.
The process utilizes the system to remove salt and other solids as well as excess water leaving a glycol stream that can be reused as a hydrate inhibitor. The process begins by preheating a glycol/brine stream comprising approximately fifty percent (50%) glycol. The stream is then subjected to three evaporation cycles. The first evaporation cycle comprises introducing the preheated stream into a suppressed boiling point evaporator where the stream is heated under a constant pressure. The stream pressure is then dropped to cause a portion of the water contained in the stream to vaporize or flash. The flashing stream is then introduced into a separator vessel where the water vapor is separated from the remaining liquid stream. The water vapor is removed from the separator and condensed. The remaining liquid glycol/brine stream is then pumped from the separator vessel through a solids removal system where precipitated salts and solids are removed. These steps are repeated two additional times. Each time the remaining liquid stream becomes more concentrated with glycol until the finished product is approximately ninety percent (90%) glycol.
REFERENCES:
patent: 3726929 (1973-04-01), Payne et al.
patent: 3789065 (1974-01-01), Kollar
patent: 4200765 (1980-04-01), Goetz
patent: 4427507 (1984-01-01), Aken et al.
patent: 4460383 (1984-07-01), Valerius
patent: 4687546 (1987-08-01), Willis
patent: 4810340 (1989-03-01), Blytas et al.
patent: 5234552 (1993-08-01), McGraw et al.
Hydrate Prevention With Gas Expansion, Subsurface Heat, J.L. Beauquin & J.C. Fechant, Offshore, Aug. 1997, pp. 104-106.
Operations & Maintenance Manual, Vortoil Separation Systems; Vortoil K-Liner Separator, Document No. 6803, Rev. 2, Aug. 1995, pp. 1-15.
Separators Versus Hydrocyclones, Two Different Solutions to Solids/Liquid Separation; Reprinted from Filtration News, Jan./Feb. 1989.
Simulation and Control of a Multiple Effect Evaporator; K.M. Nielsen & T.S. Pedersen & F.D. Nielsen, Aalborg University, Department of Control Engineering, Institute for Electronic Systems, Denmark.
A Shortcut for Designing Evaporators; A Simple and Fast Method for Finding the Optimum Number of Effects; M.I. Alejandro Anaya Durand, Instituto Mexicano del Petroleo, Chemical Engineering/Jan. 1996, pp. 123-126.
Survey of Solar Desalination Systems and System Selection, Soteris Kalogirou, Dept. of Mechanical Engineering, Higher Technical Institute, Nicosia, Cyprus, pp. 69-81.
Performance Assessment of Multistage Absorption Cycles, K. Cheung, Y. Hwang, J.F. Judge, K. Kolos, A. Singh and R. Radermacher, Dept. of Mechanical Engineering, College Park, MD, pp. 472-481.
Divens Kiel M.
Dunning Timothy R.
Evans Richard I.
Girau Rita W.
Hicks Ralph L.
Reading & Bates Development Co.
Wilson James O.
LandOfFree
Process and system for recovering glycol from glycol/brine strea does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and system for recovering glycol from glycol/brine strea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and system for recovering glycol from glycol/brine strea will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1682475