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Control and optimize chemical processes with process analytical chemistry (PAC)

Real-time process analytical chemistry solutions

Automated measurement of critical chemical process parameters to boost plant performance

Laser-based measurement technologies like Raman spectroscopy and tunable diode laser absorption spectroscopy (TDLAS), continue to gain traction over alternative methods like gas chromatography or mass spectrometry. With no moving parts, and greatly reduced need for sampling, the used process analyzers are easier to maintain, and provide highly precise results within seconds. This enables smarter control of rapidly changing processes in real-time, without human exposure to hazardous chemicals.

  • Up to 30%

    reduction in batch processing time

How we can help

Our analytical solutions provide fast, real-time measurement of chemical compositions with minimal operating costs and safety risks. We are experts in the development of customized analytical solutions that overcome unique measurement challenges including the design of process-specific probes, analyzer racks, and shelters.

  • Complete application support from feasibility study through commissioning, maintenance contracts, and long-term chemometric modeling support

  • Process analytical chemistry solutions are engineered to meet industry standards worldwide

  • Global service and support network

Applications

Reaction endpoint detection and kinetics control

Emulsion polymerization produces a wide range of polymeric materials, including paints, adhesives and synthetic rubbers. This type of reaction is performed within an aqueous environment where the monomer species is maintained within a single phase with a suitable surfactant or emulsifier. One or more monomer species may be used, and the resultant polymer or copolymer is produced as a stable suspension, in the form of a latex.

Detect reaction endpoint with Raman spectroscopy
Our expertise in the field

Raman spectroscopy is well suited for monitoring these reactions insofar as it is sensitive to the measurement of specific double bonds, and it does not suffer with interference from the aqueous matrix.

  • Band ratios can compensate for variations in overall measured intensity of the reaction

  • Water does not interfere with measurement in aqueous solutions

  • Ability to measure through glass reactor walls or windows

  • Excellent correlation with chromatographic and gravimetric data

Real-time control of gas impurities

Costs of a plant shutdown due to off-spec gas can be very high especially for petrochemical processes.

Controling gas impurities in feed gas in real time to improve product quality
Our expertise in the field

TDLAS analyzers monitor the quality of feed gases by selectively measuring contaminants such as ammonia (NH3), moisture (H2O) or acetylene (C2H2). These measurements help improve process control, meet product specifications, prevent catalyst poisoning and minimize flaring. The analyzers provide reliable measurements within seconds, thus enabling quick actions. We provide complete analyzer solutions comprising of a sample extraction and conditioning system and suitable analyzer enclosures.

In-line monitoring of product properties and quality

Polymerization reactions are often done in semi-batch mode. This allows for careful control of product composition in order to create high-performance materials with finely tuned custom properties. During the reaction, strict control over the reactant concentrations is necessary to avoid unwanted properties in the end-product. Simply adding the reactants in the correct ratio is insufficient.

Raman analyzers can identify bands for specific functional groups common to polymerization monomers
Our expertise in the field

Our Raman analyzers are sensitive to specific functional groups, such as the vinyl and alkyl moieties common to polymerization monomers. Our easy sample interface and its fiber optic coupling to the base unit allows for flexible placement of the base unit relative to the batch reactors or process lines.

  • Options available for non-contact optics allowing measurement through reactor windows

  • Measure up to four batch reactors or process streams with a single analyzer

  • Deliver consistency between batches with respect to average molecular weight and polydispersity

Increase process control with in-line analytical methods

Process map of acetylene hydrogenation ©Endress+Hauser

By using TDLAS analyzers to monitor the contaminants in the feed gas, the costs of off-spec gas and shutdowns of the chemical plant can be avoided.

Schematic diagram of process-control system for semi-batch polymerization ©Endress+Hauser

Schematic diagram of process-control system for semi-batch polymerization.

  • Process map of acetylene hydrogenation
  • Schematic diagram of process-control system for semi-batch polymerization

Benefits

Process analytical chemistry (PAC) is key when striving to control and optimize your chemical processes. With in-line analytical technology, such as TDLAS and Raman spectroscopy, you will gain enhanced process understanding and control in real time. Bring your chemical plant to its next level of performance by increasing yield, improving quality, and ensuring the safest possible workplace.

  • Over 25

    years of continued operation by earliest installed analyzers

  • >2000

    process Raman analyzers installed around the world

  • 100+

    patents in Raman and holographic technology

Success stories

  • Simple products

  • Easy to select, install and operate

Technical excellence

Simplicity

  • Standard products

  • Reliable, robust and low-maintenance

Technical excellence

Simplicity

  • High-end products

  • Highly functional and convenient

Technical excellence

Simplicity

  • Specialized products

  • Designed for demanding applications

Technical excellence

Simplicity

Variable

FLEX selections Technical excellence Simplicity
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  • L
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Fundamental selection

Meet your basic measurement needs

Technical excellence
Simplicity
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Lean selection

Handle your core processes easily

Technical excellence
Simplicity
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Extended selection

Optimize your processes with innovative technologies

Technical excellence
Simplicity
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Xpert selection

Master your most challenging applications

Technical excellence
Simplicity

Variable

Browse through our portfolio!

  • Analytics - We help you to improve quality while reducing operational costs

    Analysis

    Analysis

    Water, beverages, dairy products, chemicals or pharmaceuticals have to be analyzed every day. Choose the device best suited to your process needs from our comprehensive product portfolio.

  • Flow measurement

    Flowmeter

    Flowmeter

    Water, natural gas, steam, mineral oil, chemicals are some of the fluids that have to be measured day in, day out. Select the flowmeter best suited to your process needs.

  • Field of Applications Level

    Level

    Level

    Continuous level measurement and point level detection in liquids and bulk solids

  • Field of Application Pressure

    Pressure

    Pressure

    Powerful instruments for process pressure, differential pressure, level and flow.

  • Endress+Hauser offer appropriate software solutions for all branches of industry.

    Software

    Software

    Apart from all relevant measuring and system technologies, we also offer appropriate software for all branches of industry that provide to run your operating processes at its full potential.

  • System products and Data Managers

    System products

    System products

    Applicator

  • Key visual temperature

    Temperature measurement

    Temperature measurement

    Thermometers and transmitters for the process industry

  • Service portfolio

    Instrumentation services

    Instrumentation services

    Maximize plant performance, minimize OPEX, increase uptime, all with compliance. Partner with Endress+Hauser instrumentation services.

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