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Unit operation

Hydrogenation toll manufacturing in India

For reductions that need a pressure autoclave, hydrogen on site and a plant licensed to hold both.

Live listings

1 verified unit lists Hydrogenation capacity today. Every listing is published under an alias; the plant’s identity is exchanged only after both sides sign.

Search these 1 listings — add capacity, material of construction or certification filters from there.

What hydrogenation on job work involves

Hydrogenation is one of the most specialised unit operations bought as toll manufacturing, because few plants can offer it. The step needs a pressure autoclave, a hydrogen supply under a storage licence, catalyst handling procedures and operators who have done it before. Clients with an occasional hydrogenation in an otherwise ordinary process buy the step rather than build for it.

Typical work is catalytic reduction over palladium on carbon, Raney nickel or platinum catalysts at pressures from a few bar to well above twenty, in autoclaves from 250 litres to several KL. Magnetically driven agitators avoid seal leaks; catalyst is filtered off closed and either recovered or returned. The economics turn on catalyst loading, cycle time and how cleanly the plant recovers precious metal.

What to check before you send an enquiry

The questions our desk puts to a unit before it qualifies an enquiry for Hydrogenation. A listing answers most of them; the trial batch answers the rest.

  • Autoclave rating and volume: design pressure and temperature, material of construction, and magnetic drive or a demonstrated seal system.
  • Hydrogen supply and licence: cylinders, tube trailer or on-site generation, held under the applicable explosives-department licence, with leak detection in the room.
  • Catalyst handling: pyrophoric catalyst procedures, closed filtration, and an agreed basis for precious-metal accounting and return.
  • Hazard-class experience: high-pressure hydrogenation listed in the plant’s consent to operate, and an emergency plan the plant can show you.
  • Downstream train on the same site — filtration, distillation or crystallisation — so the reduced product does not travel between steps.

Where the capacity is

Hydrogenation capacity sits with the multi-purpose plants of Ankleshwar, Panoli and Vapi, with the Hyderabad pharma estates at Pashamylaram and Jeedimetla and a smaller number of units at Tarapur.

Unit operations

Industries served

Clusters

Common questions

What is toll hydrogenation?
Toll hydrogenation is having a reduction carried out under hydrogen pressure at a plant licensed and equipped for it, on your material and to your process. It is bought on job work more often than most reactions because the equipment, the hydrogen handling and the statutory approvals are expensive to own for occasional use.
What pressure ratings do Indian hydrogenation units offer?
Low-pressure autoclaves up to roughly 10 bar cover many hydrogenations of nitro groups and unsaturated bonds. Medium and high-pressure units run to 50 bar and beyond for harder reductions. Ask for the design pressure on the vessel’s certificate rather than an operating figure, and for the material of construction and the agitator type.
Who supplies the catalyst?
Either side can, and it must be settled before costing. Many clients supply their own palladium or Raney nickel catalyst because it carries the process knowledge; others buy it through the plant. Agree who owns the spent catalyst, since precious-metal recovery has real value and hazardous-waste obligations attach to the rest.
What safety and statutory checks matter for a hydrogenation toll unit?
Hydrogen storage and handling approvals, a hazard study for the reaction, pressure-vessel certification with a valid test date, nitrogen purging procedure, relief sizing, and gas detection in the bay. Ask how the unit proves the vessel is inert before hydrogen is admitted, because that step is where incidents happen.

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