caa a22 4500 378927906 CHVBK 20180305123622.0 cr unu---uuuuu 161128e20040407xx s 000 0 eng 10.2202/1542-6580.1122 doi (NATIONALLICENCE)gruyter-10.2202/1542-6580.1122 Enhancement of the Distribution of a Liquid Sprayed Into a Fluidized Bed [Elektronische Daten] [David Zhou, Mohammad Saberian, Cedric Briens, Franco Berruti, Edward W Chan, Steven L McDougall] In the fluid coking process, bitumen and steam are sprayed into a fluidized bed of coke particles. The liquid reacts on the surface of the hot particles to give distillate products, light gases and coke. A good primary particle/liquid mixing in the spray jet is required in order to achieve high yields of valuable products and minimize operability problems due to particles agglomeration or loss of bed fluidity.An Enhanced Solids Entrainment (ESE) device has been proposed to improve the mixing of droplets and particles during injection. It consists of a cylindrical tube mounted co-axially downstream of the spray nozzle. The objective of this study is to develop an effective and convenient non-invasive technique to quantify the improvements in liquid distribution on the particles that results from the use of ESE device.A slug of 30 vol% ethanol in water solution is sprayed into a fluidized bed of sand. The bed is defluidized shortly after the start of the ethanol water injection. Then, the gas-solid contacting pattern is changed to fixed bed, with downward airflow. The evaporation rate can be obtained from the measured concentration of ethanol in the gaseous effluent. The evaporation rate depends on the wetted area that is exposed to the gas. Good primary dispersion of the liquid on particles yields a large exposed wetted area and, hence, a high evaporation rate. A model is used to estimate the distribution of liquid on the particles from the measured evaporation rate.The experimental results show that the ESE device produces a more uniform primary liquid distribution on the particles, increasing by 7 to 21 % the mass of solids contacted by the injected liquid. ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston Fludization nationallicence Fluid Coking nationallicence Fluidized Bed nationallicence Liquid Injection nationallicence Jet nationallicence Zhou David University of Western Ontario, xzhou9@uwo.ca aut Saberian Mohammad University of Western Ontario, msaberia@uwo.ca aut Briens Cedric University of Western Ontario, cbriens@sympatico.ca aut Berruti Franco University of Western Ontario, berruti@eng.uwo.ca aut Chan Edward W. Syncrude Canada Limited, chan.edward@syncrude.com aut McDougall Steven L. Syncrude Canada, mcdougall.steven@syncrude.com aut International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-04-07) 2:1 2004 2 ijcre https://doi.org/10.2202/1542-6580.1122 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2202/1542-6580.1122 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhou David University of Western Ontario, xzhou9@uwo.ca aut NATIONALLICENCE 700 1- Saberian Mohammad University of Western Ontario, msaberia@uwo.ca aut NATIONALLICENCE 700 1- Briens Cedric University of Western Ontario, cbriens@sympatico.ca aut NATIONALLICENCE 700 1- Berruti Franco University of Western Ontario, berruti@eng.uwo.ca aut NATIONALLICENCE 700 1- Chan Edward W. Syncrude Canada Limited, chan.edward@syncrude.com aut NATIONALLICENCE 700 1- McDougall Steven L. Syncrude Canada, mcdougall.steven@syncrude.com aut NATIONALLICENCE 773 0- International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-04-07) 2:1 2004 2 ijcre CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter