3rd Chapter Flashcards
(BFD)
Block flow diagrams
Often used for higher level, less detailed descriptions, to clarify the overall concept of the process
(PFD)
Process flow diagrams
A process flow diagram differs from a block flow diagram in that the PFD is more detailed and
conveys more information, which only gives a general sense of flow information.
(P&ID)
Piping and instrumentation diagrams
Width of 1 mm.
Pipes of a main product
Width of 0.5 mm
Used for subsidiary flow lines, graphical symbols representing equipment and machines (except valves and fittings), energy carrier lines and auxiliary system lines.
0.25 mm lines
used for graphical symbols representing valves and fittings, symbols for the process measuring and control functions
Block flow diagrams (Basic Information)
Identification of the frames
Identification of ingoing and outgoing materials
Flow path of main material flows between the frames
Block flow diagrams (Additional information)
Identification of the main material flows between the frames
Flow rates or quantities of ingoing and outgoing materials, energy or energy carriers
Main material flows between the frames
Characteristic operating conditions and main chemical reactions
Process flow diagrams (Basic Information)
Type of apparatus and machinery needed for the process
Designation for equipment and machinery
Route and direction of the incoming and outgoing material and energy flows
Identification and flow rates or quantities of incoming and outgoing materials
Identification of energy types and/or energy carriers
Characteristic operating conditions
Process flow diagrams (Additional information)
Identification and flow rates or quantities of materials between the process steps
Essential valves and their layout in the process
Functional requirements for process measuring and control devices at important points
Supplementary operation conditions
Characteristic data of equipment and machinery (in separate list if necessary)
Spot height of platforms and approximate relative vertical position of equipment
Some Process Units of Process flow diagrams
Reactors
Separators (single and multi-stage)
Compressors, pumps and turbines for gases and liquids
Valves for de-pressurizing of gases or liquids
Heat exchangers for heating or cooling
Fired heaters and furnaces
lps
Low-Pressure Steam (3-5 bar)
mps
Medium-Pressure Steam (10-15 bar)
hps
High-Pressure steam (40-50 bar)
htm
Heat Transfer Media (Organic)
cw
Cooling Water
wr
River Water
rw
Refrigerated Water
rb
Refrigerated Brine
cs
Chemical Wastewater with high COD
ss
Sanitary Wastewater with high BOD
el
Electric heat
ng
Natural Gas
fw
Fire Water
A Code letters for apparatus and machinery (EN ISO 10628)
Equipment or machine, if it cannot be classified
under one of the following groups
B Code letters for apparatus and machinery (EN ISO 10628)
Vessels, tanks, bins, silos
C Code letters for apparatus and machinery (EN ISO 10628)
Chemical reactors
D Code letters for apparatus and machinery (EN ISO 10628)
Steam generators, gas generators, furnaces
F Code letters for apparatus and machinery (EN ISO 10628)
Filters, liquid filters, gas filters, separators
G Code letters for apparatus and machinery (EN ISO 10628)
Gears
H Code letters for apparatus and machinery (EN ISO 10628)
Lifting, conveying and transport
K Code letters for apparatus and machinery (EN ISO 10628)
Columns
M Code letters for apparatus and machinery (EN ISO 10628)
Electric motors
P Code letters for apparatus and machinery (EN ISO 10628)
Pumps
R Code letters for apparatus and machinery (EN ISO 10628)
Agitators, vessels with agitator, mixers, stirrers
S Code letters for apparatus and machinery (EN ISO 10628)
Centrifuges
T Code letters for apparatus and machinery (EN ISO 10628)
Driers
V Code letters for apparatus and machinery (EN ISO 10628)
Compressors, vacuum pumps, fans
W Code letters for apparatus and machinery (EN ISO 10628)
Heat exchanger
X Code letters for apparatus and machinery (EN ISO 10628)
Feeding and distribution facilities, special
equipment
Y Code letters for apparatus and machinery (EN ISO 10628)
Drives (drive units), not electric motors
Z Code letters for apparatus and machinery (EN ISO 10628)
Crushing machines, grinding machines
B Code letters for valves and fittings (EN ISO 10628)
Shut off valve
F Code letters for valves and fittings (EN ISO 10628)
Filter, strainer, dirt trap, sieve (in pipe)
G Code letters for valves and fittings (EN ISO 10628)
Sight glass
H Code letters for valves and fittings (EN ISO 10628)
Control valve
K Code letters for valves and fittings (EN ISO 10628)
Steam Trap