PSRI Consulting

PSRI has over 160 years of experience and over 225 reviewed publications in fluidization and particle technology

Dr. Ray Cocco has 27 years experience in reactor engineering, modeling, fluidization, and particle technology.  He has worked on ceramic processing, oxydehydrogenation,  catalytic oxidation, hydrogenation, hydrodesulfurization, composite materials, biomass, chemical looping, polyolefin, chlorination and oxychlorination.

Experience

President and CEO, Particulate Solid Research Inc., Chicago, IL — 2010 to Present

Lead research and development for PSRI in multiphase flow with emphasis on industrial-scale applications with focus on using both large-scale experimental units mirrored with detailed modeling such as computational fluid dynamics.

Vice President, Particulate Solid Research Inc., Chicago, IL — 2006 to 2010

Implement and direct modeling efforts, signal processing capabilities and automation at PSRI, leverage technology to member companies, manage PSRI funding and marketing efforts and further develop the PSRI team.

 

Technical Research Leader, The Dow Chemical Company, Midland, IL — 1989 to 2006

Subject matter expert in reaction engineering, catalysis and particle technology.  Implement and directed technology well for fluidized beds and riser reactors within the company.  Developed several commercialized reactors and processes.  Six Sigma and Design for Six Sigma Black Belt.  

Graduate Research Assistant, Auburn University, Auburn, AL — 1982 to 1989

Studied the electronic and structural modifications of ruthenium catalyst by sulfur in hydrodesulfurization.

Summer Intern, Naval Sea Systems Command, US Navy, Arlington, VA — 1980 to 1980

HVAC design for nuclear, chemical and biological environments.

Education

  • Auburn University — PhD in Chemical Engineering, March 1989
  • University of Florida — BS in Chemical Engineering, June 1982

Awards

  • J.C. Biery Scholarship, 1981
  • Alumni Scholarship, 1982
  • Phi Lambda Upsilon Award, 1984
  • AVS Award for Outstanding Graduate Student in Southeast, 1986
  • Special Recognition Awards at Dow,  1995, 1997, 1999
  • University of Florida Alumni Excellence in Service Award, 2015
  • Particle Technology Forum Service Award, 2016

Committees

  • Past-chair and past-cochair of the AIChE Particle Technology Forum Group 3B,  2004 to 2007
  • Past-chair and past-cochair of the AIChE Particle Technology Forum,  2008 to 2011
  • Past CTOC Member for AIChE,  2014 to 2017
  • Board Member for ASTM Subcommittee 18.24 “Characterization and Handling of Powders and Bulk Solids,”  2008 to present
  • Board of Advisor for University of Florida Department of Chemical Engineering, 2010 to present
  • Auburn University’s Departments of Chemical Engineering,  2014 to present
  • Board of Advisor for University College London’s Centre for Nature Inspired Engineering, 2014 to present
  • Auburn University’s Departments of Chemical Engineering,  2014 to present
  • Board of Advisor for University College London’s Centre for Nature Inspired Engineering, 2014 to present
  • Editorial Advisory Board for Powder and Bulk Engineering, Powder Technology, and Powder Technology,
  • Member of the International Fluidization Conference
  • Advisory Committee, Past Chair and current cochair for the AIChE Frontiers in Particle Science and Technology Conferences,
  • Chair of the World Congress in Particle Technology in Orlando, Florida in 2018.

 

 

Skills

  • Six Sigma

  • Mathematica,

  • Fortran

  • C

  • C++

  • Fluent

  • Barracuda

  • Star CCM+

  • ASPEN Plus

  • SimuSolv

  • gPROMS

     

Publications

Cocco, R.A., S.R. Karri, T.M. Knowlton, J. Findlay, T. Gauthier, J.W. Chew, et al., Intrusive Probes in Riser Applications, AIChE Journal (2017), in press.

Cocco, R., Particle segregation in bulk solids, Powder and Bulk Engineering, pp. 1-3,  Oct 2017.

Cocco, R., W. D. Fullmer, P. Liu, and C. M. Hrenya, “CFD-DEM: Modeling the small to understand the large,” Chemical Engineering Progress, August (2017).

Cocco, R., Understanding dilute-phase pneumatic conveying, Powder and Bulk Engineering, pp 1-6,  Jan 2017.

Cocco, R.,  Issangya, A., Karri, S.B.R., Freeman, T., Jaeger, H., Knowlton, T., Small-scale Particle Interactoins are Having Significant Effects on Global Bed Behavioir, Kona Powder and Particle Journal. 34 (2017) 1–13.

Cahyadi, A.,  Anantharaman, A., Yang S, Karri, S.B.R, Findlay, J., Cocco, R.A., Review of Cluster Characteristics in Circulating Fluidized Bed (CFB) Risers, Chemical Engineering Sciences, Accepted.

Cocco, R., Six degrees of fluidization, Powder and Bulk Engineering, pp 1-5, Oct 2016

Cocco, R., Particle flow in hoppers, Powder and Bulk Engineering. pp. 1–4,  Jan 2016.

Tebianian, S., Dubrawski, K., Ellis, N., Cocco, R.A., Hays, R., Karri, S.B.R., Leadbeater, T.W., Parker, D.J., Chaouki, J., Jafari, R., Garcia-Trinanes, P., Seville, J.P.K., Grace, J.R., “Investigation of particle velocity in FCC gas-fluidized beds based on different measurement techniques,” Chemical Engineering Science, 127 pp. 310-322, February 2015.

Issangya, A.S., Karri, S.B.R., Knowlton, T., Cocco, R., Use of pressure to mitigate gas bypassing in fluidized beds of FCC catalyst particles, Powder Technology. (2015) 1–9.

Cahyadi, A., Neumayer, A., Hrenya, C.M., Cocco, R.A., Jia, W-C., “Comparative study of transport disengaging height (TDH) correlations in gas-solid fluidization, “ Powder Technology, 275, pp. 220-238, February 2015.

Cocco, R., Interparticle forces in powder technology, Powder and Bulk Engineering. pp. 1–3, 2015

Chew, J-W, Cahyadi, A., Hrenya, C.M., Karri, S.B.R., Cocco, R.A, “Review of entrainment correlations in gas–solid fluidization,” Chemical Engineering Journal, vol. 260, no. C, pp. 152–171, January 2015.

Cocco, R., Diplegs: More on getting down with particles in fluidized beds, Powder and Bulk Engineering. (2015) 1–2.

Cocco, R., “Getting down with particles in fluidized beds,” Powder and Bulk Engineering, vol. 31, pp. 1-3, October 2014.

Cocco, R.,  Karri, S.B.R., Knowlton, T., Avoid Fluidization Pitfalls, Chemical Engineering Progress Dec 2014, 1–6.

Cocco, R.,  Karri, S.B.R., Knowlton, T., Introduction to Fluidization, Chemical Engineering Progress. Nov 2014, 1–9.

Panda, R., Shadle, L.J., Shahnam, M., Cocco, R., Issangya, A., Spenik, J., Ludlow, J.C, Gopalan, B., Shaffer, F., Syamlal, M., Guenter, C., Karri, S.B.R., Knowlton, T., “Challenge Problem I:  Model validation of circulating fluidized beds,” Powder Technology, vol 258, pp 1-22, 2014.

Cocco, R., “The dangers of particle size assumptions,” Powder and Bulk Engineering, pp. 1-3, May 2014.

Cocco, R., “Pressure’s role in fluidized bed performance,” Powder and Bulk Engineering, vol. 28, pp. 22-25, February 2014.

Cocco, R., “The simplicity of reverse-flow cyclones” Powder and Bulk Engineering, vol. 29, pp. 1-4, October 2013.

Issangya, A.S., Karri, S.B.R., Knowlton, T., Cocco, R., Effects of bed diameter, baffles, fines content and operation conditions on pressure fluctuations in fluidized bed of FCC catalyst, Fluidization XIV (2013) 1–9.

Cocco, R., “Particle Technology - CFD modeling made easy,” Powder and Bulk Engineering, 27 (4), pp.45-55, April 2013.

F. Shaffer, Goplan, B., Breault R.W., Cocco, R., Karri, S.B.R., Hays, R., Knowlton, T., “High speed imaging of particle flow fields in CFB risers, Powder Technology, vol 75, pp. 1-14, 2013.

Jennifer McMillan, Frank Shaffer, Balaji Gopalan,  Jia Wei Chew, Christine Hrenya, Roy Hays, S.B. Reddy Karri, Ray Cocco,, “Particle cluster dynamics during fluidization,” Chemical Engineering Science, 2013, vol. 100, pp. 39-52.

C. B. Solnordal, K. J. Reid, L. P. Hackman, R. Cocco, and J. Findlay, “Modeling coke distribution above the freeboard of a FLUID COKING reactor,” Ind. Eng. Chem. Res, 2012, vol. 51, no. 47, pp. 15337–15350.

R. Cocco, S. B. R. Karri, T. Knowlton, B. Gopalan, F. Shaffer, J. W. Chew, and C. M. Hrenya, “Particle and particle cluster hydrodynamics in a circulating fluidized bed riser,” presented at the Fluidized Bed Combustion XXI, Napoli, Italy, 2012, vol. 21, pp. 1–8.

R. Cocco, “Understanding equipment erosion,” Powder and Bulk Engineering, vol. 26, pp. 18–21, Oct. 2012.

J. W. Chew, R. Hays, J. G. Findlay, T. M. Knowlton, S. B. R. Karri, R. A. Cocco, and C. M. Hrenya, “Reverse core-annular flow of Geldart Group B particles in risers,” Powder Technology, vol. 221, pp. 1–12, May 2012.

R. Cocco, “What's behind particle clustering?,” Powder Bulk Engineering, vol. 26, pp. 18–22, Feb. 2012.

[J. W. Chew, R. Hays, J. G. Findlay, T. M. Knowlton, S. B. R. Karri, R. A. Cocco, and C. M. Hrenya, “Cluster characteristics of Geldart Group B particles in a pilot-scale CFB riser. I. Monodisperse systems,” Chemical Engineering Science, vol. 68, no. 1, pp. 72–81, Jan. 2012.

J. W. Chew, R. Hays, J. G. Findlay, T. M. Knowlton, S. B. R. Karri, R. A. Cocco, and C. M. Hrenya, “Cluster characteristics of Geldart group B particles in a pilot-scale CFB riser. II. Polydisperse systems,” Chemical Engineering Science, vol. 68, no. 1, pp. 82–93, Jan. 2012.

J. W. Chew, D. M. Parker, R. A. Cocco, and C. M. Hrenya, “Cluster characteristics of continuous size distributions and binary mixtures of Group B particles in dilute riser flow,” Chemical Engineering Journal, vol. 178, pp. 348–358, Dec. 2011.

J. W. Chew, R. Hays, J. G. Findlay, T. M. Knowlton, S. B. R. Karri, R. A. Cocco, and C. M. Hrenya, “Impact of material property and operating conditions on mass flux profiles of monodisperse and polydisperse Group B particles in a CFB riser,” Powder Technology, vol. 214, no. 1, pp. 89–98, Nov. 2011.

J. W. Chew, R. Hays, J. G. Findlay, S. B. R. Karri, T. M. Knowlton, R. A. Cocco, and C. M. Hrenya, “Species segregation of binary mixtures and a continuous size distribution of Group B particles in riser flow,” Chemical Engineering Science, vol. 66, no. 20, pp. 4595–4604, Oct. 2011.

R.  Cocco, “Shape up,” Powder and Bulk Engineering, vol. 25, no. 2, pp. 14–17, Feb. 2011.

A.S. Issangya, Karri, S.B.R.., Knowlton, T.M., Cocco, R., “Effect of gas bypassing in deep beds on cyclone dipleg operation” in n Circulating Fluidized Bed 10 (Ed. Knowlton, T.M.), Sunriver, Oregon (2011), Paper 5-6.

Karri, S.B.R., Cocco, R., Knowlton, T.M., “Erosion in second stage cyclones:  effects of cyclone length and outlet gas velocity” in Circulating Fluidized Bed 10 (Ed. Knowlton, T.M.), Sunriver, Oregon (2011), Paper 5-2.

R. Cocco, R. Hays, S. Karri, and T. Knowlton, “The effects of cohesive forces on catalyst entrainment in fluidized bed reactors,” Advances in Fluid Catalytic Cracking: Testing, Characterization and Environmental Regulations, vol. 129, pp. 155–171, Dec. 2010.

R. Cocco, “What is density in particle technology,” Powder and Bulk Engineering, vol. 24, no. 10, pp. 16–21, Oct. 2010.

R. Cocco, “The danger of particle size assumptions,” Powder and Bulk Engineering, pp. 14–18, Jun. 2010.

R. Cocco, Y. Arrington, R. Hays, J. Findlay, S.B.R. Karri, and T. Knowlton, “Jet cup attrition testing,” Powder Technology, vol. 200, pp. 224–233, 2010.

R. Cocco, F. Shaffer, R. Hays, S. Karri, and T. Knowlton, “Particle clusters in and above fluidized beds,” Powder Technology, vol. 203, pp. 3–11, 2010.

R. A. Cocco, P. Cai, E. B. Foger, S. A. Smith, and P. P. Listak, “Fluidized Bed Sparger,” U.S. Patent US2008/19334014-Aug.-2009.

R. Hays, S. Karri, R. Cocco, and T. Knowlton, “Small Particles Cluster Formation in Fluidized Beds and its Effect on Entrainment,” Circulating Fluidized Bed 9, vol. 9, pp. 1–5, Jan. 2008.

N. Vásquez, K. Jacob, R. Cocco, S. Dhodapkar, and G. Klinzing, “Visual analysis of particle bouncing and its effect on pressure drop in dilute phase pneumatic conveying,” Powder Technology, vol. 179, no. 3, pp. 170–175, 2008.

R. Cocco and P. Cai, “Jet Hydrodynamics Around Fluidized Bed Spargers,” World Congress in Particle Technology 5, vol. 5, pp. 1–7, Mar. 2006.

R. Cocco and K. Jacob, “Understanding Gas Residence Times in Reverse Flow Cyclones,” World Congress in Particle Technology 5, vol. 5, pp. 1–7, Mar. 2006.

Rice, R.B., Jovanovic, Z., Harner, R., Cocco, R., “In-situ analysis of bubble hydrodynamics in a fluidized bed reactor at operating conditions,” AIChE Preprint, AIChE Annual Meeting, San Francisco, November 16-21, 2003

Cocco, R.A., “Circulating fluidized bed reactors:  Basic concepts and hydrodynamics,” in Encyclopedia of Chemical Processing and Design, Anthony, R.G., McKetta, J.J., eds. Marcel Dekker, New York, 2002, p. 1.

Molnar, M., Mallo, T., Sinclair, J., Hook, B., Cocco, R., AIChE Symposium Series, 313 (1996) 6.

Cocco, R.A., Cleveland, J., Harner, R., Chrisman, R., “Simultaneous in-situ determination of particle loadings and velocities in a gaseous medium,” AIChE Symposium Series, 308 (1995) 147.

Cocco, R.A., Tatarchuk, B.J., “Desorption-induced recombination-cationization adduct formation for metal-adsorbate systems,” Surface Science Letters, 227 (1990) L91.

Cocco, R.A., “Electronic and structural modifications of ruthenium catalysts by sulfur,” Dissertation (1989).

Cocco, R.A., Tatarchuk, B.J., “Effects of presulfidization on the selectivity and surface structure of ruthenium catalysts,” Lagmuir 5 (1989) 1309.

Cocco, R.A., Papageorgeoupolos, C., Tatarchuk, B.J., “Static SIMS measurements during explosive desorption: desorption-induced recombination and cataionization,” Surface Science, 218 (1989) 167.

Cocco, R.A., Tatarchuk, B.J., “Secondary ion formation mechanisms for thiophene on clean and sulfur precovered Ru(0001),” Surface Science, 218 (1989) 147.

Cocco, R.A., Tatarchuk, B.J., “Thiophene adsorption and decomposition on clean and sulfur precovered Ru(0001),” Surface Science, 218 (1989) 127.

Kuo, Y.J., Cocco, R.A., Tatarchuk, B.J., “Hydrogenation and hydrodesulfurizaton over sulfided ruthenium II.  Impact of surface phase behavior on activity and selectivity,”  Journal of Catalysis, 112 (1989) 250.

Cocco, R.A., Tatarchuk, B.J., “Adsorption and reaction mechanisms of thiophene over sulfided ruthenium catalyst,” Microstructure and Property of Catalyst, MRS Symposium Proceedings (Eds. Treacy, M.M.J., Thomas, J.M., and White, J.M.) 3 (1987) 335.

Kuo, Y.J., Cocco, R.A., Tatarchuk, B.J. “Mechanism for the promotion and poisoning of ruthenium catalyst by sulfur,” Petroleum Chemistry Preprint, ACS, 31 (1986) 258.

 

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