Monomer Production

PCS and ESD for turbo unit M-2

Activities: Designing, manufacturing, shipment, assembly, setup and commissioning.

Design: Medium and upper levels of the system are based on Delta V system by Emerson Process Management.

System Title 

Automated system for process control (PCS) and emergency shutdown (ESD) for methane turbo unit M-2.

Purpose of the System Development

The system was developed to replace the out-of-date pneumatic automation devices with automated control systems based on electronic control tools and automation, including computing units.

Description of Automation

Methane turbo unit M-2 of the shop for pyrogases compression and separation is aimed for methane compression of LP ethylene unit, arriving from gas separating heat exchanger T-40 from 0.005 MPa (0.05 kgs/sm2) up to 0.65 MPa (6.5 kgs/sm2). Methane turbo unit M-2 is a process facility of the 2nd grade of explosive hazard. Rated capacity is 9800 nm3/hour. Condenser steam turbine serves as a drive unit.

Turbo unit consists of the following components:

  • Condenser steam turbine including barring speed
  • Two stage turbo compressor
  • Steam and condensate systems
  • Systems for lubricating and control oil
  • Cooling system
  • Instrument air system
  • Systems for nitrogen supply to turbo units seals
  • Valves
  • Control valves

System Functions
  • Displaying, registration and storage of process data
  • Actuating devices control
  • Automatic transfer switch for condensation pumps, oil pumps and power inputs
  • Control of pressure, flow rate, level and frequency of rotation
  • Surge protection and control
  • Automated startup of turbo unit and warm-up
  • Emergency shutdown system

Design

PCS and emergency shutdown system are based on DeltaV by Emerson Process Management AG.