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Aspen simulation of pulverized coal gasification

2009-03-12View Original

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Block: DECOMP Model: RYIELD * WARNING: THE SPECIFIED YIELDS HAVE BEEN NORMALIZED BY A FACTOR OF (0.99575) TO ENSURE AN OVERALL MATERIAL BALANCE. INFORMATION ELEMENT NO. 2 IN THE ULTANAL ATTRIBUTES IS SET TO ZERO; THIS VALUE IS MISSING IN THE COMP-ATTR FORM AS WELL AS IN THE INLET STREAM. INFORMATION ELEMENT NO. 3 IN THE ULTANAL ATTRIBUTES IS ALSO SET TO ZERO; ITS VALUE IS MISSING IN THE COMP-ATTR FORM AND IN THE INLET STREAM. INFORMATION ELEMENT NO. 4 IN THE ULTANAL ATTRIBUTES IS SET TO ZERO; AGAIN, THIS VALUE IS MISSING IN THE COMP-ATTR FORM AND IN THE INLET STREAM. INFORMATION ELEMENT NO. 5 IN THE ULTANAL ATTRIBUTES IS SET TO ZERO; ITS VALUE IS ALSO MISSING IN THE COMP-ATTR FORM AND IN THE INLET STREAM. INFORMATION ELEMENT NO. 6 IN THE ULTANAL ATTRIBUTES IS SET TO ZERO; THE VALUE IS MISSING IN THE COMP-ATTR FORM AND IN THE INLET STREAM. INFORMATION ELEMENT NO. 7 IN THE ULTANAL ATTRIBUTES IS SET TO ZERO; ITS VALUE IS MISSING IN THE COMP-ATTR FORM AND IN THE INLET STREAM. * WARNING: IN THE SUBS-ATTR SENTENCE, (9) VALUES WERE ENTERED WHILE (10) VALUES WERE EXPECTED. * WARNING: IN THE SAME SUBS-ATTR SENTENCE, (4) VALUES WERE ENTERED WHEN (10) VALUES WERE REQUIRED. Why are the values for 2.3.4.5.6 all equal to 0? What have I done wrong?
Reply #22009-03-12
Also, when using Aspen for simulation, if the actual operating data of the reaction apparatus are available, it is possible to derive the reaction kinetic equations. How is this done?
Reply #32009-03-16
You must have forgotten to enter the elemental analysis data for the feed stream. If I’m not mistaken, you want to use a RYIELD reactor to process unconventional feed streams of coal; in that case, you should enter the elemental analysis data of the coal in the Comp-Attr field of the coal stream. If you do not enter anything, ASPEN will automatically set it to the default value of 0.
Reply #42009-03-16
Did you get it wrong? ASPEN allows you to input reaction kinetics data to simulate reactions, but it cannot derive kinetic equations from actual operational data.
Reply #52009-03-16
But someone said that if he’s given the actual operational data, he can deduce the actual reaction process, right? ? ? ?
Reply #62009-03-27
Could an expert explain the process of a simulated vaporization furnace? Or how about giving an example? Thank you

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