lundry powder plant  
Central control room with computers

1.  The whole plant
is automatically controlled by PLC

2.  The startup and
shutdown of the plant is controlled by programs in the computers.

3.  There are
interlocks between critical items of equipment, and monitoring of operation
data.

4.  The functions of
the system include detergent powder formulation adjustment; report printout,
operation data display and recording/filing.

5. Big screen
showing how the plant is running. There are also alarmings and operator
intervene indications.

6. Manual and
automatic operation modes can be switched between each other by operator.

7. All raw materials,
both solid and liquid, are automatically dosed according to detergent powder
formulation by computer.

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