Mineral oils: processes and products – Chemical conversion of hydrocarbons – With prevention or removal of deleterious carbon...
Patent
1995-04-18
1998-03-10
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With prevention or removal of deleterious carbon...
208 83, 208 91, 585820, 585823, 585824, 585950, C10G 916
Patent
active
057257566
ABSTRACT:
A method to minimize catalyst deactivation rate and coke laydown, and maximize desired reaction rate in processing of industrially significant reactions under supercritical conditions to generate a reaction mixture stream including formed reaction products and reactants, said contacting at a desired catalyst temperature of about 1-1.2 critical temperature of the resulting reaction mixture and at a pressure between the critical pressure of the reaction mixture and a pressure necessary to establish said reaction mixture fluid density of greater than 0.65 gm/cc.
REFERENCES:
patent: 4176045 (1979-11-01), Leftin et al.
patent: 4243831 (1981-01-01), Malloy et al.
patent: 4338448 (1982-07-01), Yellin et al.
patent: 4483761 (1984-11-01), Paspek, Jr.
patent: 4605811 (1986-08-01), Tiltscher
patent: 5030788 (1991-07-01), Amelse et al.
patent: 5221462 (1993-06-01), Reid et al.
Tiltscher, Melmut et al.; "A Mild and Effective Method for the Reactivation or Maintenance of the activity of Heterogeneous Catalysts"; Angew. Chem. Int. Ed. Engl., 20, (1981). No. 10, pp. 892-894.
Tiltscher, H. et al.; "Trends in High Pressure Chemical Reaction Engineering"; Chem. Eng. Sci., vol. 42, No. 5, pp. 959-977, 1987.
Saim, Said et al.; "Phase and Reaction Equilibria Considerations in the Evaluation and Operation of Supercritical Fluid Reaction Processes"; Supercritical Fluid Science and Technology; Johnson, K.P. et al., Eds., ACS Symposium Series No. 406, pp. 301-316 (1989).
Saim, Said et al.; "Isomerization of 1-Hexene on Pt/.gamma.-AI.sub.2 O.sub.3 Catalyst at Subcritical and Supercritical Reaction Conditions: Pressure and Temperature Effects on Catalyst Activity"; The Journal of Supercritical Fluids, vol. 3, No. 4, pp. 214-221, 1990.
Manos, Georgios et al.; "Coke Removal from a Zeolite Catalyst by Supercritical Fluids", Chem. Eng. Technol., 14 (1991) 73-78.
Saim, Said et al.; "Isomerization of 1-Hexene over Pt/.gamma.-AI.sub.2 O.sub.3 Catalyst: Reaction Mixture Density and Temperature Effects on Catalyst Effectiveness Factor, Coke Laydown, and Catalyst Micromeritics", Journal of Catalysis, 131, 445-456 (1991).
Baptist-Nguyen, Sarah et al.; "Coking and Activity of Porous Catalysts in Supercritical Reaction Media"; AlchE Journal, vol. 38, No. 7, pp. 1027-1037, Jul. 1992.
Saim Said
Subramaniam Bala
Center For Research, Inc.
Myers Helane
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