                             ALCHEMY  SYSTEMS
                               P.O. BOX 694
                              PAOLI, PA 19301
                            cheme1@voicenet.com



We would like to introduce the chemical engineering programs
developed by Alchemy Systems.    The  Programs  will  run  on IBM
PC's,XT's,AT's and compatibles without difficulty.   They  feature 
user friendly menu driven formats and pop-up windows to  simplify 
operations.    Operating manuals are provided.

                          MIXER DESIGN PROGRAMS
The Mixer design programs will enable the design engineer to
calculate the vessel and agitator requirements for  liquid
blending, gas dispersion, and shaft design problems.  The  gas
dispersion program includes correlations to predict mass transfer
coefficients.    These programs are valuable for design, checking
vendor bids and  for scale-up of laboratory to commercial scale
mixing equipment.  Both English and Metric Units are provided.
                  LIQUID BLENDING PROGRAM CAPABILITIES
Vessel Design : Calculates the mixer vessels volume,  Csa,  Surface 
area,  shell   thickness  and  vessel  weight  given the vessels
diameter, design pressure and type of head.  The shell thickness 
calculations accept input for various materials, and weld
efficiencies.   This  section of the program is useful for the
design of any vessel.
Fluid Input : Calculates the physical properties of the final mixture
from the physical  properties  of  the  Bulk  and the Dispersed
Fluid.  Accurate  methods  are  used  for  predicting  the  mixture 
density, heat capacity,  thermal  conductivity,  surface  tension 
and  viscosity.   The viscosity predictions are based on the ASTM
Blending Index method.
Agitator Design : Calculates the mixing BHP, The Standard Motor Size,
The circulation  flow, the velocity in the tank, the turnover time,
the  blend time,  the  tip  speed, maximum shear stress, torque,
Reynolds numbers, Power  Numbers,  Flow Numbers, and Heat transfer
coefficients for jackets and coils. The program supports Propeller,
Hydrofoil, Axial, Radial, Disk, Retreat Blade, Anchor and Helix
Agitators.   The Number of  Blades and the Width/ Diameter  ratio 
of  the  blades  can be changed to  compare effects on BHP
consumption and circulation rates. The Diameter and rpm of the
selected agitator type  can  also be easily modified to perform
case studies.  The  program  features  useful  pop-up  menus  that
aid the designer in making the  proper  selections  for  the
agitator design.  For example, industrial standard values for  the
number of agitator blades and blade widths are  provided  during 
input  selection,  and  a table of the Standard AGMA RPM's are
presented to help in selecting the correct speeds.    
Shaft Design : The location of the various impellers are given as
input and the program will calculate the  impeller  weights  from
the results of the Agitator design program.  It will calculate the
require shaft thickness by performing a critical speed and  torque 
analysis.  Both top supported and bottom steady bearing systems are
studied.

                      GAS MIXING PROGRAM CAPABILITIES
The Gas Mixing program is identical  to the blending program in the
Vessel Design and liquid properties  sections.    However,  it also
includes a gas Bubbler reactor design programs  that  will 
calculate the Gas Holdup, Kla [mass transfer coefficient] for both
Air/Water and the specific gas/liquid System.  This is useful for 
reactor designs where mixers are not present. The mass transfer
coefficients  for  the  system are calculated from input data, such
as the gas diffusivity, Henry's law coeffients and gas reactant 
partial pressure.  Systems such as  hydrogenators can be evaluated
as well  as the standard Air-Water system provided in the program
for comparison.

The Agitator design section  will  calculate  the  Gas Holdup at
Different power levels  and  will  design  the  impeller  diameter 
to satisfy power requirements at specified gas loadings.   The
different power requirements of the bottom agitator  and  the 
upper agitators are calculated, assuming that  the  lower  agitator 
must  disperse  the  bulk  of  the  gas.   The improvement in the
reactors Mass  transfer coefficient with power input is also 
calculated.    Pop-up  menus  are  furnished  that  supply  data
for prediction  of  mass  transfer  coefficients,  as  well  as 
data  for the agitators.  The program can be used in either a
design or a rating mode.

                     SHAFT RATING PROGRAM CAPABILITIES
The shaft rating program  permits  various shaft, agitator
combinations to be evaluated for  stess,  vibration,  and  critical 
speed analysis.  Both bottom steady bearings and overhung shafts
can be studied.
                           PIPE SIZING PROGRAMS
Incompressible  Flow :   This  program  performs  single  phase  line
sizing   calculations. It is  accurate  for  liquid,  and  gas  at
moderate pressure drops, and for laminar  and  turbulent  flow.   
Valves and fittings can be specified from a menu.  The  fluid  flow 
can be specified in various units for mass or volume  flow  rates. 
The  Density  can  be  given as Lb/FT3 or Specific Gravity.  The
pipe  Roughness  for different types of conduits and pipe is
provided  by  the  program.  The  internal  diameter of different
Schedule pipe  automatically  provided.    The  hydraulic  diameter 
can be calculated for annulus or rectangular ducts. The program
will calculate the PSI pressure drop per  100  ft.  and  the  total 
pressure drop.. The fluid velocity, Reynolds number and  friction 
factor  are  provided.  The program will function in a design mode 
to  calculate the required pipe diameter to meet a specified
pressure drop.
Compressible Flow :   This  program  calculates  the adiabatic and
isothermal  pressure drop for gas flow.  It includes the features
of the incompressible flow program, and in  addition  calculates
the adiabatic temperature drops, density changes, and is accurate
for high velocity flows.  Pressure drop is calculated for a
specified gas  flow  rate, and alternatively the flow rate can be
determined from  a  specified  pressure  drop.  Sonic velocities
and Mach numbers are generated for inlet and outlet conditions.
Two Phase Flow :   This program  will calculate the flow regime for
two phase flow using the Baker  chart  correlations,  and will
calculate the pressure drop for two phase flow  using  the 
Lockhart Martinelli, and other methods specific for the flow
regime.  The  static head of vertical two phase flow problems is
also calculated. The program  includes the features of the pipe
sizing program such as  automatic  determination  of  the  pipe ID
from the schedule class and nominal diameter, and permits the use
of fittings.  
Pipe Network : Complex pipe networks consisting of several hundred
pipes and nodes are solved by rapid  Newton  Raphson  methods. 
Ideal for calculating  cooling water, firewater  distribution,  and 
flare  header  systems.  Both liquid or gas systems  are  handled 
with  flow loops and branched systems.     Uses rigorous methods
for friction  factors and pressure drops to calculate the flow in
the pipes.   Features include addition of Pumps or Compressors,
Fittings,  Additional  pressure   drop,   and  flow  controllers. 
Internal diameters of pipes are provided  from  nominal diameters.
Various units are permitted for flow such as English (USA), and
Metric Units.   Flow rates in or out of various Nodes or  pressures 
can  be specified.  The program will  perform  initial  estimates 
of  pressures   if  not  supplied  to  aid  in convergence.  
                            LINEAR PROGRAMMING
The Linear  Programming  system  is  an  operations  research
program that solves business and engineering  optimization 
problems.  For example, the program can  calculate  the  lowest 
cost  transportation  network to ship products or determine the
optimum  product  structure for a chemical plant or refinery.   It 
uses  the  simplex  algorithm  to determine the optimum solution 
to  any  problem  that  can  be  expressed  in  terms  of linear
constraints.  The programs are  written in machine language with
efficient algorithms to solve problems rapidly.  A efficient data
editor is provided in the programs to ease  the  task  of  data 
input and correction.  Three programs are provided.  One program 
is  written to solve problems with up to 50 variables  and 
constraints  and  can  be  used interactively on any system.  It
only requires  a  64  K  system memory. The other two programs
solve  large  matrix  problems  and  require  520  or  640  Kbytes 
memory respectively.  The maximum free memory  of  the PC is used.
These programs  can solve problems with up  to  200  variables and
constraints.  There are over 20 example problems provided on  the 
disk that are used to teach the use  of  the  program  and  to 
illustrate  the  methods  used  in  Linear Programming.    Typical 
problems  provided  concern  the  use  of  linear programming to
establish chemical plant and refinery product optimization,
transportation networks and other cases of interest to chemical
engineers.

                               PROGRAM COSTS
The Mixer Programs cost $800 dollars.  The Line Sizing programs
cost $400.     The Linear Programming  System cost $100 dollars.
SPECIAL OFFER All four packages can be purchased together for $1000
dollars.   Send a check or company Purchase order to Alchemy
Systems at the Address above.  Overseas orders  should  add  $30
dollars for shipping, and include a check  in  US  dollars. 
Purchase  orders  are  accepted for US shipments.  Pennsylvania orders
should include sales tax of 6 percent.  Demo Disk provided  by
sending ( $5/USA~$15/Overseas ) to cover shipping. 

Alchemy Systems provides a 30 day Money Back Guarantee if the
programs do not work to your satisfaction.



                                ORDER FORM

        MIXING PROGRAMS                       $800.00         ________   
        LINEAR PROGRAMMING                    $100.00         ________    
        PIPE SIZING PROGRAMS                  $400.00         ________

        ALL PROGRAMS                         $1000.00         ________ 
