Protein supplements production, example plant overview – Pakistan industrial sector update part 7

Protein supplements production, example plant overview – Pakistan industrial sector update part 7

The first hour of the batch will occur solely in R001. The feed yeast for this reactor will be supplied for the storage tank T008. The feed yeast will be prepared previously to ensure that the yeast is entering R001 already in the exponentially growth phase
and it will be produced to give the concentration of cells of 5kg/m³.

This philosophy is based on reducing the time required for the batch. The principle behind this is that if the yeast enters the batch already under exponential growth then the lag phase of growth will be significantly reduced. This is the same principle
for delivering the yeast under the same conditions as those that will be present in the reactor, i.e. the same temperature and pressure. For this reason the flow exiting T008 is at 30°C. This will be fed to R001 through the pipe stream 45 at rate of 24m³/hr.

The process is designed to allow the reaction is to occur under fully aerobic conditions. This is to be achieved by a two pronged approach. Agitated bioreactors in conjunction with a constant fresh air supply to the reactors.

The air supply is come from a compressed storage vessel, T006. The requirements for the air in the reactors will follow a similar curve to that of the substrate, i.e. an exponential demand in correlation to the requirements of the cell growth. The air will
be pumped through stream 49 via a vacuum pump, AC01. This will go to R001 for the first hour of the process at a rate of 2655 m³/hr.

The will then be redirected via stream 15, stream 20 and stream 24 to reactors R002, R003 and R004 respectively. The range of the required air flow to each of these reactors is from 200 to 12600m³/hr. This is to be supplied to the reactors at
the base of the reactor and fed through a sparger. This will enable the gas to be distributed throughout the reactors evenly and ensure the whole reactor can operate in complete aerobic conditions.

Continued in part 8

Short URL: https://www.newspakistan.pk/?p=12545

Posted by Ahmed Tariq on Feb 13 2012. Filed under Sci-Tech. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry