Home

Model 300 - Fixed Speed Centrifugal                   Compressor

Model 300 is of a single-stage fixed-speed centrifugal compressor featuring 4 PID control loops (2 x pressure, 1 x level and 1 x flow).   The suction drum gas supply is a mixture of feed gas and gas from the compressor recycle loop.   PIC1 maintains the pressure in the suction drum by adjusting the flow of feed gas, and the level of condensate in the suction drum is controlled by LIC1.  The compressor draws gas from the suction drum and feeds the discharge drum via an air cooler.   The pressure in the discharge drum is maintain ed by a PIC2 which controls the flow of gas out of the plant. The recycle flow rate is adjusted by FIC1 to maintain the compressor suction flow rate.   The model features a graph of the compressor adiabatic head vs volumetric flow envelope on which the operating point is dynamically shown.  Other features include 12 process alarms, 17 logged process variables (which can be shown on the trend/graph display) and 3 composition displays.

Model Components

Suction Drum
Single Stage Fixed Speed Compressor Fin-fan Cooler
Discharge Drum4
PID Control Loops
Feed Temperature Dial
3 Composition Displays
Head vs. Flow Display
17 trend parameters
12 alarm conditions

Model 301 - Speedtronic Turbine                   Control Panel

Model 301 features the popular Speedtronic turbine control panel, interfaced to a gas fired turbine which drivesan electrical generator. The model can be used to illustrate start-up and shut-down sequences. The turbine is run up to the firing speed using a diesel engine driving unit. The Control Panel receives speed and exhaust temperature information from the model, and computes the required control voltages to set the fuel flow. The Control Panel also receives information from zero, minimum and high speed sensors and relays, and an acceleration speed relay. These are used to sequence the turbine firing during the start-up and shut-down sequences. Each sensor type may be given a fault condition, and the effect on the control system and sequence may be monitored on both the model of the turbine generator set, and on the standard graphical output

Model 302 - C3/C4 Binary Distillation                   Column

Á¦Ç°Á¤º¸

The simulation allows the feed composition and flow to be varied. As with all the simulations, the model includes popdown controllers for pressure, level and flow, together with, popdowns of composition breakdowns which are available at key locations on the plant.

 Model Components

1 Binary distillation column (20 tray)
1 Binary overhead condenser (fin fan)
1 Binary reboiler
1 Feed pre-heater
1 Binary reflux drum
1 Top product pump
7 Controllers
1 Centrifugal pump (non switchable)
13 Graphical process parameters

Model 303 - Gas/Oil/Water Separation                   Train

Model 303 features the first stage separation system for crude oil from the wellhead.   Oil exits from up to five wells through a manifold system.  This includes a facility for test separation, or for the stream to be connected to an HP separator.   Not modelled, but included in the graphic for information, is the full train including the gas takeoff to a knock-out drum and compressor, the oil takeoff to a pump, and awater exit to a waste system.
Each well may be connected in separately, and each exhibits different composition and flow characteristics.
The total model graphic is larger than a standard screen, and is accessed using the standard Windows scroll bars.

Model Components

3 Phase Test Separator
3 Phase HP Separator
5 Crude oil wells
1 Test manifold system
1 Production manifold system
6 Controllers
12 Valves
8 Graphical process parameters
6 Stream composition displays

Model 304 - Basic TEG Gas                   Dehydration

Model 304 features a Gas Dehydration system that uses Tri-Ethylene Glycol (TEG) as the drying agent. Wet gas is fed into the base of the tower and flows up counter-current to and in contact with the TEG to emerge at the top as dry gas. The TEG is pumped, under flow control, into the top of the column at a controlled differential temperature with respect to the wet gas. The TEG flows down the tower under the effect of gravity absorbing water from the wet gas. When the TEG exits the tower, it enter the regeneration plant. It flows through the still coils and heat exchanger to the GCG Separator, and then on through two filters (sock and carbon) and a second heat exchanger into a reboiler. The reboiler drives water out of the TEG.

Model Components

1 Multi component inlet scrubber
1 Gas - glycol contactor column
1 Multi component reboiler with still column
3 Heat exchangers
2 Filters (sock, carbon)
1 Three phase separator (gas/condensate
  - glycol)
2 Circulation pumps
7 Controllers
8 Valves
4 Dials
Graphical parameters
30 Alarms (with alarm history)
3 Faults

Model 305 - Volumetric Well Control

Model 305 simulates the migration of a gas bubble (kick or influx) whether the well is shut in or the choke is opened. The pressure is controlled using the Static Volumetric Method, using the annulus pressure gauge only. Bottom Hole Pressure can be read directly, the drill pipe pressure can be made available if required. The Bubble entered the bottom. The drilling mud specific gravity is the start up variable, and is then presumed constant. Once the gas bubble has reached the surface, the well may be lubricated using a kill pump.

Model Components

1 Well bubble migration unit
1 Reciprocating pump
3 Dials
11 Graphical process parameter
2 Alarms (with alarm history)

Model 306 - Amine Gas Sweetening

Model 306 features a complete gas sweetening plant, including the Contactor Tower and the Amine Regeneration system. The system includes the heat exchangers, vessels and pumps normally associated in the reversal of the sour gas absorption process. The total model graphic is larger than a standard screen, and is accessed using a minipicture which allows easy navigation around the total diagram.

Model Components

1 Contactor tower
1 Regeneration Still
1 Heat Exchanger
1 Tower input cooler
2 Filters
2 Amine return pumps
1 Make up reservoir vessel
8 control valves
10 Graphical process parameters

Model 307 - Basic Refrigeration                   System

Á¦Ç°Á¤º¸

 Model 307 features a basic refrigeration circuit. The process fluid flows through the tube-side of the condenser and is cooled. The refrigerant circuit starts at a storage tank. This feeds the condenser, where the refrigerant boils off cooling the process fluid. The refrigerant vapour is compressed via a centrifugal compressor and passes through a cooler to the storage tank.

Model Components

1 Pure refrigerant condenser
1 Single stage compressor
1 Water cooled heat exchanger
1 Refrigerant storage drum
2 Controllers
1 Switch compressor on/off
2 Manual valve dials
12 Process variables selectable on the trend display

Model 308 - Variable Speed                   Centrifugal Compressor

Á¦Ç°Á¤º¸

 Model 308 features a single stage variable speed centrifugal compressor. Gas enters via the inlet manifold where it joins with any recycle gas before entering the suction drum. Gas is drawn from the suction drum into the compressor and out to a discharge drum via a cooler. Many process parameters are variable, including gas composition, controller PID settings and valve CV’s. Compressor loading is controlled by adjusting the speed against suction and discharge pressures.

Model 309 - Reciprocating                   Compressor

Á¦Ç°Á¤º¸

  Model 309 features a two stage reciprocating compressor. Gas enters via the inlet manifold before entering the suction drum. Gas is drawn from the suction drum into the compressor and onto a discharge drum via a cooler. The outlet from the discharge drum can be switched between the production manifold and the second stage of compression. Compressor flow is controlled by adjusting the ratio of clearance volume to swept volume. The position signal to the recycle valve can be switched to between outputs of three different pressure controllers.

Model Components

1 Two stage reciprocating compressor
Coolers
Suction and Discharge drum
Compressor gas recycle line
5 Controllers
3 Switches
3 Input gas parameters
10 Controller parameter adjusts
4 Valve Cv parameter adjusts

 Á¦Ç°¸í

Model 310 - Basic Turbine

 Á¦Ç°Á¤º¸

 Model 310 is of an industry standard gas turbine, typical of the type used in a small power station situation to generate electricity. The turbine is loaded using an electrical generator which is coupled to the shaft and which has a nominal rating of 25MW at 11.5kV, at a turbine shaft speed of 5100 rev/min. The turbine is started using a coupled diesel engine. The model includes the relationships between efficiency, inlet and exhaust temperatures, load and fuel usage.

Model Components

Gas Turbine Unit
Diesel Engine starter
Electrical Generator
Fuel selection
Generator loading
Resistive Load
Power Factor
Generator Synchronisation
Indicators for
inlet temperature

   o exhaust temperature
   o fuel usage
   o speed
   o loading
   o efficiency