Condenser reboiler

E — Heat Exchanger, condenser, reboiler, etc. Ej — Jet Ejector Ex — Expansion Joint F — Fan... 

Total Condenser Reboiler Partial Condenser Total... 

As an example, if this were the final column selection, then the column trays = 8-condenser-reboiler = 6 theoret-... 

A common case where intense general corrosion is experienced in a very restricted section of plant is where an acidic vapour is condensing. As a vapour the acid is usually non-corrosive, but when condensed it can only be handled in expensive materials. Another variation on this theme is that only at the region of initial condensation is there a corrosion problem, either the condense/reboil condition being particularly corrosive or else corrosion only takes place at or near the boiling point. Several variations in design are possible to cope with these situations ... 

Where the corrosion problem is limited to the condense/reboil situation, i.e. where, due to variations in vapour temperature (or temperatures of the surfaces with which the condensate can come into contact), the condensate reboils, the answer may be to use resistant material at... 

Distillation column, tray absorber Diameter, height, internal pressure, material of construction, tray type, number of trays, condenser, reboiler (see item 3)... 

Condenser, reboiler, heat exchanger (shell and tube) Heat transfer surface area, type, shell design pressure, materials for shell and tube... 

In the aforementioned process, the heat for the reboiler is usually available as waste heat from the steam cracker, for example, and is essentially cost-free. If this heat is not available, a heat pump can be used. The heat pump can upgrade the heat, at an exergetic cost, to the desired temperature level. If the separation is viewed in isolation, this means that the heat rejected by the condenser at relatively low temperature, can be upgraded to be the higher temperature heat input for the reboiler. A schematic of the heat pump process is given in Figure 10.2. The overhead vapors are heated slightly in the reflux subcooler, which enables these vapors to be compressed and cooled in the condenser-reboiler. 

Since helium and neon have boiling points considerably below that of nitrogen, these gases will collect on the nitrogen side of the condenser-reboiler associated with the double-column air separation system. Recovery of these gases is accomplished by periodic venting of a small portion of the gas from the dome of the condenser and transfer to a small condenser-rectifier refrigerated with... 

Under the above modeling assumptions, the dynamic model of the reactor-column-recycle system consists of the material balance for the total molar holdup of the reactor, condenser, and reboiler, and component-wise balances for the reactant A and product Pi in the reactor, condenser, reboiler, and column trays, having a total of 2N + 9 differential equations. Specifically,... 

Referring to Figure 2.3 of multivessel batch distillation (MultiBD) column, the model equations for condenser, reboiler and internal plates are the same as those presented for conventional batch distillation column (section 4.2). The model equations for the vessels are the same as those presented for feed tank of the MVC column (section 4.3.3). Note however, that there are no feed plate model equations as in the case of an MVC column. 

Cases 1 and 2 Furnace condenser reboiler reboiler flow... 

Kenneth J. Bell, Ph.D., P E., Regents Professor Emeritus, School of Chemical Engineering, Oklahoma State University Member, American Institute of Chemical Engineers. (Thermal Design of Heat Exchangers, Condenser, Reboilers)... 

The analysis of the equipment list (reactors, columns, condensers, reboilers) indicates a heavily insulated plant so we are using the high-end of the 0.05-0.30 range. 

The prior and substantial contributions of Frank L. Rubin (Section Editor, Sixth Edition) and Dr. Kenneth J. Bell (Thermal Design of Heat Exchangers, Condensers, Reboilers), Dr. Thomas M. Elynn (Cryogenic Processes), and E. C. Standiford (Thermal Design of Evaporators, Evaporators), who were authors for the Seventh Edition, are gratefully acknowledged. 

Calculating Flowrates and Condenser/Reboiler Heat Duties... 

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