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Formaldehyde
& Expansion
Konkan Chemicals Private Ltd. (KCPL) conceived a Formaldehyde
project based upon Methanol as raw material using Silver catalyst technology.
The project was put up in Thane District of Maharashtra State, India.
Formaldehyde is a heavy organic chemical having varied applications particularly
in the field of resins, moulding powder, slow release fertilizers and
other down stream speciality chemicals.
Initially a plant of 20 MTPD capacity was put up which was later expanded
to 40 MTPD capacity. Libra Techcon Limited (LCS) provided basic,
detailed engineering, procurement assistance, supervision and commissioning
services and project management services besides the license and know-how.
The project was completed as per schedule and was commissioned successfully
producing 37% grade with 3 to 4 % Methanol as inhibitor.
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Formaldehyde Plant
(Click
to enlarge)
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Also see:
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Hexamine
& Expansion
Within couple of years of successful implementation of Formaldehyde, KCPL
decided to venture upon a new project - Hexamine. Hexamine is a down stream
product based upon Formaldehyde and Ammonia. It is a solid crystalline
powder slightly sweetish in taste. LCS provided license, know-how, basic
and detailed engineering services, procurement assistance, project management
and erection cum commissioning services. The project was completed ahead
of schedule for 600 MTPY capacity initially. The expansion was to 1200
MTPY capacity by the addition of balancing equipment mainly in the evaporator
section.
The process consists of reaction of aqueous Formaldehyde with anhydrous
ammonia which produces solution of Hexamine in water. The solution is
concentrated to super saturation allowing Hexamine to crystallize which
is centrifuged and dried.
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Paraformaldehyde
Due to lower domestic demand of Paraformaldehyde in India, it was not
feasible to put up this project based upon internationally available scale
of operation. Moreover, the technology was closely guarded. KCPL then
decided and awarded R&D and pilot plant level work to LCS to develop
Paraformaldehyde technology.
Utilizing vendor's R&D facilities for thin film technology, LCS
team conducted various experiments and developed Paraformaldehyde technology
to produce 96% grade material.
In order to prove and achieve the commercial scale ultimately, KCPL
decided to put up a semi commercial scale plant of 200 MTPY capacity
and the contract was awarded to LCS. LCS carried out basic and detailed
engineering, procurement assistance, project management and erection
cum commissioning supervision. The plant was commissioned successfully.
Paraformaldehyde is produced by concentrating aqueous Formaldehyde
under vacuum, precipitating the polymer and later drying it to a free
flowing solid powdery product with the help of a polymerization catalyst.
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