| 摘要 |
<p>Method for optimisation of the production of entropy in one or more chemical reactors, where a first number of in-fed reagents are transformed to another number of out-fed products, and where a yield of a distinct of the out-fed products are set up as a predetermined value J, where concentration profiles X for the reagents, possible intermediate products and the products, and a pressure profile P through the reactor(s) first are established as known, preferably measured or empirical found values; an optimal temperature profile through the reactor(s) is determined by calculation according to known relations between concentration C, pressure P, temperature T and based on known parameters which form a foundation for the calculation, and by use of a Lagrange-multiplier μ of free choice which is of influence on a desired yield J of the in-fed reagents; the yield is first calculated as a thoretical value Jnum based on the chosen μ and the calculated temperature profile, and the known concentration and pressure profiles X, P, using known thermodynamic and reaction kinetic relations; calculated yield Jnum is then compared with the initial predetermined value J, and if these values are different, a new calculation is made of optimal temperature profile through the reactor(s) by employing a new value for the Lagrange-multiplier μ, etc., until the yield values Jnum and J becomes equal for an optimal temperature profile, and the reactor(s) are operated for any desired yield value J as close as possible to the corresponding pressure and concentration profiles P, X and the corresponding calculated temperature profile. The method comprises both endothermic and exothermic reactors.</p> |
