Page 50 - Chemical Process Equipment - Selection and Design
P. 50

2.5.  DRAWING  OF  FLOWSHEETS  25

                                     TABLE 2.3.  Flowsheet Flags of Operating Conditions in
                                              Typical Units
                                                                     <F>
                                      Mass flow rate, Ibs/hr

                                                                       (  217 )
                                      Moial flow rate, Ibmols/hr
                                                                       I   510  I
                                      Temperature, "F

                                      Pressure, psig (or indicate if psia or   @ psia
                                         Torr or bar)
                                      Volumetric liquid flow rate, gahin.   <  65.3  )
                                                                     ><

                                      Volumetric liquid flow rate, bbls/day

                                      Kilo Btu/hr, at heat transfer equipment   )   9,700   (
                                                                     / 953  /
                                      Enthalpy, Btu/lb


                                      Others

                                     ~


                                     TABLE 2.4.  Letter Designations of Equipment

                                          Equipment    Letters    Equipment     Letters
                                     Agitator            M   Grinder              SR
                                     Air filter          FG   Heat exchanger       E
                                     Bin                 -IT   Homogenizer         M
                                     B I e n d e r       M   Kettle                R
                                     Blower              JB   Kiln (rotary)       DD
                                     Centrifuge          FF   Materials handling   G
                                     Classifying equipment   S   equipment
                                     Colloid mill        SR   Miscellaneous"       L
                                     Compressor          JC   Mixer                M
                                     Condenser            E   Motor               PM
                                     Conveyor            C   Oven                  B
                                     Cooling tower       TE   Packaging machinery   L
                                     Crusher             SR   Precipitator (dust or mist)   FG
                                     Crystallizer        K   Prime mover          PM
                                     Cyclone separator (gas)   FG   Pulverizer    SR
                                     Cyclone separator       Pump (liquid)         J
                                      (liquid)            F   Reboiler             E
                                     Decanter            FL   Reactor              R
                                     Disperser           M   Refrigeration system   G
                                     Drum                D   Rotameter            RM
                                     Dryer (thermal)     DE   Screen               S
                                     Dust collector      FG   Separator (entrainment)   FG
                                     Elevator            C   Shaker                M
                                     Electrostatic separator   FG   Spray disk    SR
                                     Engine             PM   Spray nozzle         SR
                                     Evaporator          FE   Tank                l-r
                                     Fan                 JJ   Thickener            F
                                     Feeder              C   Tower                 T
                                     Filter (liquid)      P   Vacuum equipment    VE
                                     Furnace             B   Weiah scale           L
                                        aNote: The letter L is used for unclassified equipment when only a
                                     few items are of this type;  otherwise,  individual letter designations are
                                     assi g ined  .
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