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Sulphonation Plant Sulphonic Acid LABSA & SLES Manufacturing ...

A sulfonation plant produces anionic surfactants for detergents and chemical products by reacting organic feedstock (such as LAB, alcohols, or fatty acids) with sulfur trioxide (

cap S cap O sub 3

) gas, typically using a continuous falling film reactor. The process involves converting sulfur to , distributing the organic feed, reacting it in a controlled temperature environment, and neutralizing the resulting acid to create the final sulfonate or sulfate.

Air Drying and Conditioning: Dry air (often with a dew point of
or lower) is essential to prevent the formation of undesired sulfuric acid during the reaction.
Sulfur Burning and
$cap S cap O sub 3$
Generation: Liquid sulfur is burned in a furnace, and the resulting sulfur dioxide (
$cap S cap O sub 2$
) is converted to sulfur trioxide (
$cap S cap O sub 3$
) using a converter, typically in a
concentration in air.
Falling Film Reactor: The heart of the plant is a stainless steel multi-tube falling film reactor. Organic raw material flows down the inner walls of the tubes while
$cap S cap O sub 3$
gas passes through the center, reacting in a co-current stream.
Temperature Control: The reaction is highly exothermic. The reactor is cooled with water to carefully maintain temperature limits.
Digestion and Aging: The reaction mixture is held in a "digestion" tank (or aging reactor) for a specified time to ensure complete conversion.
Neutralization: The acidic product is instantly neutralized, usually with sodium hydroxide (
$cap N a cap O cap H$
), to form a stable neutralized product (e.g., Sodium Lauryl Sulfate or Linear Alkylbenzene Sulfonate).
Exhaust Gas Scrubbing: The residual gas, containing small amounts of
$cap S cap O sub 3$
and
$cap S cap O sub 2$
, is cleaned in an alkaline scrubber before being discharged.

Chemithon
Reactors: Utilizes Annular Falling Film or Turbo-Tube Reactors, suitable for high-viscosity materials, and specializes in turnkey installations.
Ballestra
Reactors: Known for using continuous falling film reactors capable of high production rates (e.g., 50 TPD).
Marsina Engineering
: Focuses on advanced dioxane removal systems and energy recovery.
WEIXIAN
: Emphasizes high-precision tube manufacturing and improved heat control for consistent quality.

Sulphonation Plant - Marsina Engineering SRL
Dec 16, 2025 — Sustainable Chemical Processing Environmental protection and human healthy responsibility drives our engineering innovation. Our s...
Marsina Engineering SRL
Sulfonation and Sulfation Processes - Chemithon
Sulphonation and sulphation plant process, sulpha(on)tion ...
Process and Technology * Sulphonation plant air drying. * Sulphonation plant air dryer. * Sulphonation plant air drying tank. * Su...
WEIXIAN (Nanjing) Science Technology co., ltd

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Sulfonation and Sulfation Processes

Chemithon Enterprises

https://www.chemithon.com › Technical_papers

Chemithon Enterprises

https://www.chemithon.com › Technical_papers

PDF

In the sulfonation process, the liquid SO3 is metered from the storage tank into a steam heated vaporizer where it is evaporated and mixed into the dried air ...Read more

36 pages

Web results

Sulphonation

Phoenix Equipment

https://www.phxequip.com › resource-detail › sulphonati...

Phoenix Equipment

https://www.phxequip.com › resource-detail › sulphonati...

The cooled down Sulphur dioxide is then conveyed to a multi-layer catalytic reactor, where sulphur dioxide (SO2) is converted almost completely to sulphur ...Read more

Sulphonation and Sulfuric Acid Combined Manufacturing ...

WEIXIAN (Nanjing) Science Technology co., ltd

https://www.njweixian.com › sulfonic-acid-and-sulfuric-...

WEIXIAN (Nanjing) Science Technology co., ltd

https://www.njweixian.com › sulfonic-acid-and-sulfuric-...

After sulfur melting, the sulfur is transported to the sulfur burning furnace through a sulfur pump and burned with dry air. The dry air is dehumidified by 98% ...Read more

Sulfonation/Sulfation Processing Technology for Anionic ...

Enviro Wiki

http://www.enviro.wiki › images › 2012-Ortega-S...

Enviro Wiki

http://www.enviro.wiki › images › 2012-Ortega-S...

PDF

Mar 23, 2012 — Sulfonation reactions can be carried out in different configurations, either liquid-liquid contact, or gas-liquid contact reactors, and a ...Read more

28 pages

Sulphonation technology and how screw blowers play an ...

Atlas Copco

https://www.atlascopco.com › air-compressor-blog › sul...

Atlas Copco

https://www.atlascopco.com › air-compressor-blog › sul...

Sulphonation is a chemical process that involves introducing a sulphonate group (–SO3H) into an organic compound. This process is widely used in the ...Read more

3a Sulphonation BALLESTRA

Ballestra S.p.A.

https://www.ballestra.com › storage › 3a-Sulpho...

Ballestra S.p.A.

https://www.ballestra.com › storage › 3a-Sulpho...

PDF

environmental regulations (NY State bill S4389B). The Desmet Ballestra process is characterized by: ✓ Contemporaneous neutralization, de-aeration & 1,4-dioxane.Read more

12 pages

AWS RELIABLE SOLUTIONS FOR SULPHONATION ...

AWS CORPORATION

https://awscorp.it › Home › Blog / News

AWS CORPORATION

https://awscorp.it › Home › Blog / News

Organic sulfates and sulfonates are industrially manufactured by reacting organic compounds with diluted gaseous SO3. The reaction is called sulfation or ...Read more

Sulphonation Plants

Technithon

https://www.technithon.com › sulphonation-plants

Technithon

https://www.technithon.com › sulphonation-plants

Batch processes with Liquid SO3 and Oleum for sulfonating heavy alkyl aryl compounds and Asphalts. Continuous Liquid phase sulfonation processes for aromatics, ...Read more

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