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Some last developments in the field of the software and technology of rectification processes.
Contact to us: masstransfer@mail.ru |
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Software for computation of methanoic lines hydrocarbons mixtures rectification from
C5H12 (pentane) to C20H42 (eicosane)
allows by numerical simulation of rectifying plant operation to select optimal operating practices and design factors
of substantial oil refining rectification columns. Basic premise at the process model development was the supposition, that all components of hydrocarbonaceous raw material having n of carbon atoms, it is possible to refer to the fraction of form CnH2n+2 and to consider, that their thermal and physicochemical properties are identical that of appropriate normal hydrocarbon of methanoic lines. |
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New 32 discharge version of the program for calculation of equilibrium compositions
of vapour and liquid phases and boiling points (vapour pressure) of multicomponent systems (further under text MCS) by methods Wilson, NRTL, UNIQUAC,UNIFAC on experimental
data about an equilibrium in binary systems composed from all possible combinations of components, included
in MCS, is offered to your attention (See Downloads).
Method UNIFAC also allows to calculate a vapor -liquid equilibrium on the data of intergroup
interaction power parameters, taken from reference books that is especially important at absence of experimental
data about vapor - liquid binary equilibriums. As against the previous 16 discharge versions this application has customarier for the modern user and more amicable window interface, but algorithm and multivariate optimization problems solution methods, already proved the reliability, practically have not varied. The computing process realized in the program will consist of two stages: - at the first stage on experimental data about an equilibrium in double systems power parameters of intermolecular (intergroup) interaction are calculated; - at the second stage both equilibrium structures of liquid and vapor phases MCS and temperatures of boiling (pressure in the system) are calculated with use of designed values of power parameters of interaction on the set concentrations of components in a liquid phase and pressure in the system (temperature of boiling). The present program is intended as for independent use in a dialogue mode, and inclusions in structure of other software products (for example programs for technological calculation rectifying stills). The standard package includes:
The developers permanently improve a core and interface of the program, which one becomes more and more convenient and universal. So! Start up the program and follow instructions on the monitor! We wish successes in work! |
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This program will not yield you the decision of all problems
in the field of rectification of multicomponent systems, but will allow to take off many of them without carrying
out of expensive experiments on the industrial equipment (Demo is applied). This
software allows to calculate structures (profiles) of a component densities and boiling temperatures of a
mixture along the column, heat carriers consumptions (heating steam and cooling waters), to determine tapping
points of lateral fractions, reflux ratio and required quantity of plates for separation of a mixture and maintenance
demanded quality of products. As against existing iteration methods of rectification process calculation (for example "from a plate to a plate" method) the given algorithm will realize the direct solution of material and thermal balances equations together with closing equations of phase equilibrium. Alongside with technological the design data of plate columns, such as diameter, number of caps, distance between plates (height of the vehicle) etc. will be calculated also. |
| The program allows to select and calculate design and technological parameters of shell-and-tube heat exchangers for thermal processes as in two-phase, with phase changes between a fluid and the vapour, and in single-phase multicomponent mixtures (See Demo). The purpose of calculation is a definition of heat-exchange surface, consumption and temperature of one of the heat-transfer mediums and pressure losses. Follow-up boiling /condensation points and equilibrium compositions of the phases are calculated. |
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The program for a calculation of processes of heat exchange in reactors, tank crystallizers,
polymerizers, etc. with pipe coils and the jackets, supplied with different types of agitators is developed.
During account the radiator surface, temperature (pressure for steam) and heat-transfer agent consumption is
determined, depending on a hydrodynamical condition of intermixings, heat effect of reaction, physico-chemical
properties of a medium and technological process conditions. The software product is useful at designing and apparatus design of manufacturing processes in a chemical, food and microbiological industry. |
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To your attention the technology of reception of the absolute alcohol based on a method of
azeotropic rectification with use of vacuum is offered to (See.
Manufacturing process). The essence of process dehydration spirit on this method will consist in use of system of two fractionating columns. The first column operates under vacuum that promotes increase of spirit concentration in azeotropic mix in comparison with its concentration in this mix at normal pressure. Thus, use of vacuum in the first column (preliminary dehydration) allows to receive spirit with concentration not achievable at usual rectification under atmospheric pressure. Use of the second column (final dehydration), operating at atmospheric or superfluous pressure, is necessary for finishing concentration of spirit up to required parameters (not less than 99,2 % on volume). The organization of process on a two-column to the circuit allows to utilize maximum also heat secondary vapor spirit, distillate and a steam condensate after a column final dehydration. One of advantages of this method is also that that, despite of significant cost of the basic process equipment (application of vacuum demands use of columns with a regular nozzle), the subsequent working costs are not great and are limited, basically, cost of the consumed electric power, heating steam and cooling water. The charge of the electric power is defined only by the capacity consumed by electric drives of the compressor of the refrigerating unit, cooling a brine which is necessary for condensation vapours in refluxer of the first column, and vacuum pumps. |
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