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Unit operation

Chlorination toll manufacturing in India

For chlorination steps that need chlorine on site, scrubbers that work and a plant permitted to run them.

Live listings

2 verified units list Chlorination capacity today. Every listing is published under an alias; the plant’s identity is exchanged only after both sides sign.

  • MS glass-lined reactor, 1 KL

    Verified Toller GJ-1002 (GJ-1002)

    BHARUCH district, Gujarat

    Batch reaction, Chlorination

    Reactor capacity
    1 – 1 KL
    Batch size
    0.2 – 0.8 KL
    Lead time
    15 days
    Materials
    Glass-lined
    Available nowDocument verified

  • MS glass-lined reactor, 2 KL

    Verified Toller GJ-1002 (GJ-1002)

    BHARUCH district, Gujarat

    Batch reaction, Chlorination

    Reactor capacity
    2 – 2 KL
    Batch size
    0.5 – 1.8 KL
    Lead time
    30 days
    Materials
    Glass-lined
    Available nowDocument verified

Search these 2 listings — add capacity, material of construction or certification filters from there.

What chlorination on job work involves

Chlorination is bought as toll manufacturing because chlorine is a licensed, hazardous gas that most plants prefer not to store. Units that do handle it — from tonners under a gas licence, with caustic scrubbers and hydrochloric-acid recovery — take chlorination steps for agrochemical intermediates, pharma intermediates and dye intermediates on a job-work basis, returning the chlorinated product or carrying it into the next step.

The reactors are glass-lined or PTFE-lined because chlorine and the hydrogen chloride it produces attack steel, and the off-gas train is as important as the vessel: a two-stage scrubber, an HCl absorber where the acid is worth recovering, and continuous monitoring of the stack. Photochemical and thermal side-chain chlorinations add lamps or high-temperature service to the same picture.

What to check before you send an enquiry

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

  • Chlorine storage and handling licence, tonner handling procedures and an emergency kit and drill the plant can show you.
  • Lined reactor condition — glass or PTFE lining inspected and spark-tested, with the record available.
  • Off-gas train: scrubber stages, caustic supply, HCl absorption and the monitoring that proves the stack is within consent.
  • Effluent: chloride and organic load into the ETP or CETP, and the plant’s consent limits for it.
  • Experience with your chlorination type — aromatic ring, side-chain, or photochlorination — and the temperature control it demands.

Where the capacity is

Chlorination capacity concentrates in Ankleshwar, Vapi and Dahej, where chlor-alkali supply is nearby and common effluent infrastructure exists, with some units in Tarapur and Nandesari.

Unit operations

Industries served

Clusters

Common questions

What is toll chlorination?
Toll chlorination is having chlorine introduced into your molecule at a plant that is equipped, approved and permitted to handle chlorine, with you supplying the substrate and the process. It is one of the least commonly self-owned unit operations because of the corrosion, the scrubbing duty and the statutory conditions attached to chlorine storage.
What materials of construction does a chlorination unit need?
Glass-lined steel is the usual reactor lining, with PTFE-lined pipework and valves, and tantalum or graphite exchangers where duty demands. Carbon steel has no place in wet chlorine service. Ask to see the lining inspection record, because a failed glass lining stops a campaign for weeks.
How is the chlorine and the by-product acid handled?
Unreacted chlorine and hydrogen chloride go to an alkali scrubber, and the resulting hypochlorite or spent acid becomes a stream that has to be sold, neutralised or sent for treatment. Ask what the scrubber capacity is, what happens to the by-product, and whether its disposal is inside or outside the quoted price.
What approvals should a chlorination toll manufacturer hold?
A valid consent to operate naming the process, chlorine storage approval, an on-site emergency plan, and evidence of the scrubbing and monitoring the consent requires. A unit that cannot show the consent naming chlorination is not a unit to send material to, whatever its equipment list says.

Other unit operations

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