Brochure

16 | Fisher
®
Olefin Production Solutions
Compressor Antisurge Valve
The availability and efciency of a plant’s compressors both have
a direct impact on the protability of the facility. Cracked gas
compressor downtime will result in lost production. Unexpected
operational issues with any of the plant’s refrigerant loops will lead
to reduced yields. Compressors also represent some of the most
valuable pieces of equipment within an olen production facility.
Not only will damage to these assets cause lost production, it can
also lead to very costly repairs.
Antisurge valves provide recycle ow to each stage of the multi-
stage compression trains that are common to olen production.
During startup and commissioning, the valve provides throttling
control to recycle a portion of the discharge ow as the
compressor is brought up to capacity. During the normal operation
of the plant, the antisurge valve will remain closed or slightly open
to allow for a small portion of the discharge to be recycled. When
closed, it is important that the valve provides tight shutoff to
prevent unwanted recycle ow.
The primary purpose of antisurge valves is to protect the most
critical and expensive pieces of equipment in the plant, the
compressors. During a surge event, the valve must respond quickly
and accurately in order to recycle the discharge ow back to the
suction side of the compressor. Failure of the valve to react quickly
can result in severe damage to the impellers of the compressor.
Click on or scan this QR code to read
about how Fisher optimized antisurge
valves have improved compressor
performance at facilities just like yours.