|
ETO
GAS
Ethylene Oxide is the simplest member of
the class epoxides having a
boiling point of 10.73 Deg. c at atmospheric pressure
and a freezing
point of -111.3 Deg C.
Pure ETO forms an explosive mixture with air over
a wide range of
concentrations. This property has been greatly reduced
by cfiluting ETO with an inert gas such as Carbon
Dioxide or Nitrogen.
Sterilization by ETO involves alkylation of micro-organisms
i.e. alteration of genetic cell material.
Process variables that play an important role in the
process are.
1. ETO concentration.
2. Relative Humidity.
3. Temperature.
4. Exposure time.
These factors are carefully monitored in order to
ensure complete
sterilization.
Steilizer Design
Chamber is made of stainless steel. The rectangular
section of the
chamber is re-inforced with U-profile jacket welded
around the chamber. The chamber is insulated by resin-bonded
glasswool covered BY Aluminium sheets.
Jacket Heating
Systems
This comprises of a shell & tube type heat exchanger
& a circulating pump. The water, used as heating
medium is circulated by the pump in the closed loop
comprising of the jacket, heat exchanger and necessary
piping. Steam is used as source of heat. Chamber temperature
is automaticallv controlled for efficient sterilization
Steam Generator
The steam Generator is fabricated from S.S. 304 sheets
with industrial immersion heaters. The steam generator
is provided with automatic pressure control and other
safety features like low water cut off to safe-guard
heaters, safetv valve gauge glass etc. The steam is
used for :
-- Humidification of the load for increasing efficency
of the Sterilization Process.
-- To heat the D. M. Water used for jacket heating.
|
