2014 Gedigeri Significant NH3 recovery from urea plant LP section flared gases
Urea Production technologies worldwide
had been proven to be energy intensive and were mostly set up under the
disbursement of sparsely available funds for capital expenditure. Though
the process licensors put up their best synergic efforts to get to the
as low as reasonably practicable energy numbers, still it had been
observed that the actual operated plants provide opportunities for
bringing in numerous changes for reducing the specific energy
consumption and cut down the flare losses. These changes though
initially sound like trivial in nature but in actual practice they prove
to be highly beneficial and advantageous. Their implementation had been
possible by proper evaluation of the systems based on the site specific
conditions and the design margins available in the installed
equipment.
This
paper highlights an innovative concept of its kind for the first time
configured in urea plants wherein a totally in-house designed scheme for
recovering Ammonia from the LP section of the Urea plants was
successfully implemented. The implementation of the scheme has been a
major milestone in OMIFCO as it involved meticulous introspection and
integration of the existing facilities of all the Ammonia, Urea and
offsite utility plants together. After implementation of the scheme in
both the Urea plants a total of about 55 MT per day of Ammonia product
is being recovered which otherwise was going to the flare stacks adding
to the emissions. The scheme had an attractive payback period of less
than a quarter year with significant benefits realized in production and
in the reduction of environmental emissions.
 2014 Gedigeri Significant NH3 recovery from urea plant LP section flared gases.pdf | [ ] | 4746 kB |
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