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A Scalable Balz-Schiemann Reaction Protocol in a Continuous Flow Reactor
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Published on: February 10, 2023

Automation of a fixed-bed continuous-flow reactor.

R Alcántara1, L Canoira, R Conde

  • 1Departrnento de Ingenieria Q.uirnica y Combustibles Escuela Ténica Superior de Ingemeros de Minas Universidad Politécnica de Madrid Rios Rosas 21 Madrid 28003 Spain.

The Journal of Automatic Chemistry
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

A new automated laboratory plant with a fixed-bed reactor was developed for methanol to gasoline conversion. This system achieved precise temperature control, ensuring good process repeatability.

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Area of Science:

  • Chemical Engineering
  • Process Control
  • Catalysis

Background:

  • Continuous-flow fixed-bed reactors are crucial for catalytic processes.
  • Controlling highly exothermic reactions, like methanol to gasoline conversion, presents significant challenges.
  • Automation enhances process stability, safety, and repeatability in laboratory settings.

Purpose of the Study:

  • To design and operate a fully automated laboratory plant for methanol to gasoline conversion.
  • To implement an adaptive-predictive control system for managing multiple process variables.
  • To achieve precise temperature control in a highly exothermic reaction environment.

Main Methods:

  • Utilized a personal computer for full automation and control of the laboratory plant.
  • Integrated an adaptive-predictive control system to manage two gas flows, one liquid flow, six temperatures, two pressures, cooling liquid circulation, and ten electrovalves.
  • Employed a cascade control system to manage the internal reactor temperature during the exothermic methanol to gasoline conversion over a ZSM-5 catalyst.

Main Results:

  • Achieved accurate control of the reactor's internal temperature within +/- 0.2 degrees C.
  • Maintained consistent pressure at 1 atm and weight hourly space velocity (WHSV) at 1.5 h(-1).
  • Demonstrated good repeatability for the methanol to gasoline conversion process.

Conclusions:

  • The developed automated laboratory plant effectively controls critical parameters for methanol to gasoline conversion.
  • Precise temperature management using a cascade control system is vital for exothermic reactions.
  • The automated system ensures reliable and repeatable results in catalytic process research.