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    About 124,000 results (0.30s) 
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    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    The linear alkyl benzene sulphonic acid (LABSA) aging process is a critical, post-reaction step (typically 30–50 min at
    45
    –
    55∘C
    ) in a turnkey LABSA production plant where raw sulfonic acid from a film reactor is allowed to react further to convert residual LAB and decrease byproducts. This phase increases conversion from
    ∼92
    %
     to over
    96
    %
    –
    98
    %
    , reducing free sulfuric acid and stabilizing the product before neutralization. 
    Key Aspects of the Aging Process: 
    • Purpose: Completes the sulfonation of residual LAB (linear alkyl benzene) and breaks down intermediate LAS anhydride.
    • Process Steps: The reaction mixture from the film reactor is held in a reactor vessel or aging tank where sulfonic acid reacts with remaining impurities.
    • Temperature: Usually maintained between
      45∘C45 raised to the composed with power C
      45∘C
       and
      55∘C55 raised to the composed with power C
      55∘C
      .
    • Water Injection: A small amount of water (approx. 1%) is often added after the main aging stage to hydrolyze any remaining LAS anhydride.
    • Quality Improvement: Proper aging improves the color and stability of the product. 
    Typical Aging Sequence: 
    1. Discharge: LABSA is discharged from the film reactor into the aging vessel.
    2. Stabilization: LABSA is treated to remove entrained air.
    3. Cooling: The product is cooled to manage the exothermic nature of the continued reaction.
    4. Transfer: The final sulfonic acid is pumped to storage or neutralization tanks. 
    Without sufficient aging, the LABSA product can have lower active content and higher sulfuric acid, reducing its effectiveness in detergents. 
    If you are looking for specific, in-depth help, I can: 
    • Describe the design of the aging vessel
    • Explain the causes of byproduct formation
    • Compare different sulfonation agents (
      SO3cap S cap O sub 3
      𝑆𝑂3
       vs. oleum)       
    Let me know if you need information regarding plant design, efficiency optimizations, or product quality specifications. 
    • Optimisation of the Linear Alkyl Benzene Sulfonation Process ...
      Feb 8, 2003 — General Features of Linear Alkylbenzene (LAB) Sulfonation * Although the sulfonation of LAB is very rapid and for practical purpos...
      ACS Publications
    • Unit 03 Aging and Stabilization
      The aging vessel uses the following process: 1. LABSA (linear alkyl benzene sulphonic acid) is discharged into the aging vessel by...
      WEIXIAN (Nanjing) Science Technology co., ltd
    • Method for continuous production of high-quality alkyl benzene ...
      Controlling homogeneous speed is 2000rpm, controlling temperature of reaction is 50 DEG C, controlling the reaction times is 15 mi...
      Google Patents
    • Optimisation of the Linear Alkyl Benzene Sulfonation Process ...
      Feb 8, 2003 — General Features of Linear Alkylbenzene (LAB) Sulfonation * Although the sulfonation of LAB is very rapid and for practical purpos...
      ACS Publications
    • Unit 03 Aging and Stabilization
      The aging vessel uses the following process: 1. LABSA (linear alkyl benzene sulphonic acid) is discharged into the aging vessel by...
      WEIXIAN (Nanjing) Science Technology co., ltd
    • Method for continuous production of high-quality alkyl benzene ...
      Controlling homogeneous speed is 2000rpm, controlling temperature of reaction is 50 DEG C, controlling the reaction times is 15 mi...
      Google Patents
    Show all
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    Web results

    Kinetic modelling and improvement of the ageing step ...


    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    by A Chruściel · 2022 · Cited by 6 — The article describes the developed concept of a new, improved method of carrying out the alkylbenzene sulfonic acid (LABSA) ageing process in an industrial ...Read more

    linear alkyl benzene sulphonic acid aging process


    WEIXIAN (Nanjing) Science Technology co., ltd
    https://www.njweixian.com › linear-alkyl-benzene-sulph...
    WEIXIAN (Nanjing) Science Technology co., ltd
    https://www.njweixian.com › linear-alkyl-benzene-sulph...
    The LABSA (linear alkyl benzene sulphonic acid) from the separator goes to the aging vessel by first discharge pump, then stabilized in the stabilization pump ...Read more

    Method for ageing the reaction mixture in a sulfonation ...


    Google Patents
    https://patents.google.com › patent
    Google Patents
    https://patents.google.com › patent
    A method and a plant for ageing a liquid post-sulfonation reaction mixture comprising linear alkylbenzenesulfonic acid and unreacted linear alkylbenzene.Read more

    Antiaging Effects of Linear Alkyl Benzene Sulfonic Acid ...


    ASCE Library
    https://ascelibrary.org › (ASCE)MT.1943-5533.0004606
    ASCE Library
    https://ascelibrary.org › (ASCE)MT.1943-5533.0004606
    Nov 30, 2022 — It is prone to aging over time owing to the surrounding natural environment, such as moisture and temperature (Gubler et al. 2005; Dehouche et ...Read more

    Optimisation of the Linear Alkyl Benzene Sulfonation Process ...


    ACS Publications
    https://pubs.acs.org › doi
    ACS Publications
    https://pubs.acs.org › doi
    However, LAS anhydride and sulfuric acid together act as a slow sulfonating agent, and in the ageing step they sulfonate the residual LAB to produce more LAS, ...Read more
    Missing: aging ‎| Show results with: aging

    Linear Alkyl Benzene Sulfonic Acid Production - Erbil


    Salahaddin University-Erbil Academic Staff
    https://academics.su.edu.krd › profiles › supervision
    Salahaddin University-Erbil Academic Staff
    https://academics.su.edu.krd › profiles › supervision
    PDF
    LAB sulfonic acid has to pass an ageing step for conversion of an intermediate product to the desired LABSA. Agitating tank is nothing but a jacketed vessel ...Read more
    74 pages

    LABSA aging vessel


    WEIXIAN (Nanjing) Science Technology co., ltd
    https://www.njweixian.com › labsa-aging-vessel
    WEIXIAN (Nanjing) Science Technology co., ltd
    https://www.njweixian.com › labsa-aging-vessel
    The LABSA (linear alkyl benzene sulphonic acid) from the separator goes to the aging vessel by first discharge pump, then stabilized in the stabilization ...Read more

    Linear alkylbenzene sulfonate


    The American Cleaning Institute
    https://www.cleaninginstitute.org › research-pdfs
    The American Cleaning Institute
    https://www.cleaninginstitute.org › research-pdfs
    PDF
    This monograph summarizes: 1) critical fate and effects data required for an environmental risk assessment on linear alkylbenzene sulfonate (LAS); and.Read more
    11 pages

    Improved process for preparing linear alkylbenzene ...


    Google Patents
    https://patents.google.com › patent
    Google Patents
    https://patents.google.com › patent
    Aging of linear alkylbenzene sulfonic acid typically involves heating the acid to a temperature of about 40-60°C for a period of time of about 2-20 minutes.Read more

    Antiaging Effects of Linear Alkyl Benzene Sulfonic Acid ...


    ResearchGate
    https://www.researchgate.net › ... › Sulfonic Acids
    ResearchGate
    https://www.researchgate.net › ... › Sulfonic Acids
    The results pointed out that, LABSA modification exhibited increased resistance to rutting and fatigue cracking along with improved low temperature ...Read more
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