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A SLES neutralization reactor is a specialized high-shear vessel, such as the WEIXIAN 79MX1, that mixes sulfuric acid (produced from sulfation) with a neutralizing agent (e.g., caustic soda) to produce Sodium Lauryl Ether Sulfate (SLES). It operates with significant slurry recirculation to maintain low, stable temperatures (< 5 °C rise) and ensure uniform mixing, often utilizing vacuum technology to produce high-active (70–75%) SLES with low dioxane and free oil content.
Key Features and Advantages
- High-Shear Mixing: Typically features multiple high-speed dispersing shearing discs (e.g., operating at 960 rpm) for rapid and uniform neutralization.
- Temperature Control: Maintains a low temperature rise (usually ) by using a 10-times recycling loop, which stabilizes the product pH and improves color.
- Vacuum Integration: Often combined with a stripping tower under vacuum (e.g., -0.09 to -0.095 MPa) to remove moisture, heat, and dioxane (typically <10 ppm) simultaneously.
- High-Active Concentration: Capable of producing high-concentration SLES (70–75%) without requiring solvents or hydrotropes, improving efficiency.
- System Integrity: Designed with durable mechanical seals and often designed to prevent acidic gas corrosion on downstream equipment.
Process Flow in SLES Production
- Reaction: Organic acid (from the sulfation reactor) is fed into the high-shear reactor along with caustic soda (), water, and additives (likeor buffers).
- Recirculation: A large amount of already neutralized SLES is recycled back into the reactor, keeping the fresh reaction mixture cool and preventing local overheating.
- Neutralization & Stripping: The mixture flows to a stripping tower (such as the WEIXIAN stripping tower) where vacuum conditions remove unwanted dioxane.
- Final Product: The resulting SLES has a controlled, stable pH (around 7–9), low free oil (<1.2%), and low dioxane (<10 ppm).
Typical Technical Parameters
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Web results
Customized SLES Neutralization Reactor ...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sles-neutralization-reactor
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sles-neutralization-reactor
Jul 6, 2023 — Customized SLES Neutralization Reactor from WEIXIAN. We have excellent quality and after-sales guarantee.
Vacuum Neutralization Technology in Surfactants Production
Ballestra S.p.A.
https://www.ballestra.com › ... › Sulphonation Suphation
Ballestra S.p.A.
https://www.ballestra.com › ... › Sulphonation Suphation
Ballestra's Vacuum Neutralization Technology offers unmatched operational flexibility, making it ideal for the production of SLES and other anionic surfactants.
SLES double-step neutralization
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sles-double-step-neutralizat...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sles-double-step-neutralizat...
When producing SLES, the sulfate needs to be neutralized with pure water, caustic soda, H2O2, and buffer in the neutralization reactor, all materials react ...Read more
Sulphonation Process- Unit 79 Neutralization & Dioxane ...
YouTube · WEIXIAN NANJING SCIENCE TECHNOLOGY CO.,LTD
770+ views · 2 years ago
YouTube · WEIXIAN NANJING SCIENCE TECHNOLOGY CO.,LTD
770+ views · 2 years ago
Features: Compared with Italy's vacuum neutralization, WEIXIAN stripping tower is static equipment, without motor and maintenance ...
sulphation plant SLES neutralisation reactor
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sulphation-plant-sles-neutra...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sulphation-plant-sles-neutra...
The neutralization reactor has the advantages of efficient and uniform mixing, flexible operation, stable system pressure, and low failure rate. detail.Read more
Sulphation Plant High-Shear SLES Neutralization Reactor
Made-in-China.com
https://njweixian.en.made-in-china.com › product › Chi...
Made-in-China.com
https://njweixian.en.made-in-china.com › product › Chi...
The high-shear neutralization reactor is composed of multiple high-speed dispersing shearing discs, and the mechanical seals and bearings are all customized.Read more
$29,000.00Free delivery
Neutralization of organic sulfuric or sulfonic detergent acid ...
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
A process for neutralizing an organic sulfuric or sulfonic detergent acid, eg, lauryl sulfuric acid or mixture of such acids, in liquid state, with a liquid ...Read more
All About SLES - A Workhorse Surfactant
YouTube · Neil Burns
600+ views · 1 year ago
YouTube · Neil Burns
600+ views · 1 year ago
It's an anionic surfactant very widely used in cleaning it's sold as a 30% solution in water 60% in water and ethanol or a 70% paste.
Missing: Neutralization Reactor
Continuous Flashing Evaporation and Neutralization System
qinoace.com
https://www.qinoace.com › Continuous-Flashing-Evapor...
qinoace.com
https://www.qinoace.com › Continuous-Flashing-Evapor...
Pump-typed continuous neutralization is required to produce SLES with a concentration of greater than 70%. An accurate amount of ether sulphate ester is ...Read more
WEIXIAN's Sulphonation Reactor and Neutralization ...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › weixians-sulphonation-reac...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › weixians-sulphonation-reac...
... neutralization and dioxane stripping，the capacity of SLES achieve to 5.2t/h steadily， 36% higher than design capacity，the power consumption of per 1000KG SLES ...Read more