Process Design Engineering Package Continued.....
11.2 Reactors, Towers, Vessels:
a) Outline sketch of vessel showing dimensions, tentative elevation, location of nozzles and man ways, internals such as trays,
demisters, packed catalyst sections, collector trays, gravity or spray distributors, support grids, etc. Vessel diameters shall be
expressed as ID for vessel shells and OD for vessel boots.
b) Low, normal and high levels of liquids in vessels and tower bottoms/ collector trays.
c) Vapor-liquid traffic data for trays and packed internals, indicating fluid flowrates, operating conditions, fluid density,
fluid viscosity, liquid surface tension, allowable pressure drop, vapor molecular weight, etc.
d) Material of construction and corrosion allowance of vessel shell and internals and insulation / tracing requirements.
e) Mechanical design pressure and temperature. Licensor shall follow good engineering practice in evaluating
system hydraulics and pressure relieving conditions (including considerations such as impact of vapor blowbacks for
high pressure vessel to low pressure vessel let-downs) and accordingly fix mechanical design conditions. It will be
reasonably ensured that such design conditions will not require to be raised upwards in the course of detailed engineering,
with only the occasional exception.
11.3 Compressors, Turbines, Blowers and Fans:
a) Gas flow rates with pure component composition break-up, dry and wet molecular weights, range of molecular weights for
machine specification, compressibility factor, Cp/Cv ratio, gas density, gas viscosity.
b) Operating temperature and pressure at inlet and outlet conditions.
c) Turndown and turn up ratios.
d) Recommended type of machine and machine drive including estimated shaft kW.
e) Materiel of construction and corrosion allowance of casing and internals.
f) Mechanical design pressure and temperature. Licensor shall follow good engineering practice and typical
vendor information in specifying these.
g) Capacity control mechanism and ranges, when applicable.
11.4 Pumps:
a) Minimum, normal and maximum fluid flow rates, fluid density and viscosity, pour point, and annotations towards presence of toxic,
corrosive or erosive materials.
b) Normal operating temperature, normal and upset condition suction pressure rated discharge pressure and NPSH available.
c) Recommended type pump arid pump drive including estimated brake KW.
d) Material of construction and corrosion allowance of casing and internals and insulation / tracing requirements.
e) Mechanical design vessel temperature. Licensor follow good engineering practice and typical vendor information in specifying these.
f) Capacity control mechanism and ranges, when applicable.
g) Suggested API seal plan, external flushing requirement, cooling requirement, etc.
11.5 Filters:
a) Design flowrate, fluid density and viscosity, pour point and annotations towards presence of toxic, corrosive and erosive materials.
Adequate particle size distribution and %solids data to be included for design of filters.
b) Type of filter with definition.
c) Operating temperature and pressure allowable system pressure drop, efficiency.
d) Material of construction and corrosion allowance of filter casing and internals and insulation / tracing requirements.
e) Mechanical design pressure and temperature. Licensor shall follow good engineering practice and
typical vendor information in specifying these.
11.6 Mixers:
a) Inlet/outlet process conditions with physical properties.
b) Mechanical design conditions.
c) Materials of construction.
11.7 Column:
a) Dimensions: ID mm x Length mm x thickness (including corrosion allowance) mm c.
b) Design temperature, oC.
c) Design pressure, kg/cm 2g.
d) Type and number of trays.
e) Number of liquid passes.
f) MOC.
g) Service.
11.8 Ejector:
a) Capacity, kg/hr (in respect of non-condensable)
b) Number of stages.
c) Temperature in oC & pressure in kg/cm 2g of motive fluid,
d) Operating pressure, mm Hg (a).
e) MOC of nozzle.
11.9 Switching/Hot gas bypass valves:
a) Type.
b) Size, mm.
c) Whether steam-jacketing required.
d) Supplier.
11.10 Air Coolers:
a) Total area, m3.
b) Total duty, kcal/hr
c) Inlet/ Outlet temperature, oC.
d) Design Pressure, kg/cm 2 g.
e) Tube diameter, mm.
f) Finned to bare surface ratio.
g) MOC.
h) No. of fans.
i) Total power consumption, KW.