Description

Inflow measurement of cumene

Requirements

  • High accuracy mass, density and volume flow measurement
  • Handling of cumene with transient gas entrainment

Description

Inflow measurement of process air

Requirements

  • Measurement of oxitation air flow
  • High turmdown ratio allows adjustment to cumene quantity

Description

Cyclone feed pressure measurement

Requirements

  • Feed pressure control

Description

Cyclone overflow pressure measurement

Requirements

  • Control of pressur ratio

Description

Radar guided level transmitter for the separation vat

Requirements

  • Extensive choice of probes for all applications
  • Available with remote converter up to 100 m

Description

Flow measurement of cleaved emulsion

Requirements

  • Reliable measurement with all flow regimes
  • Permanent density measurement

Description

Pressure measurement of hydrogenation with signal converter

Requirements

  • Process pressure control

Description

DP level measurement acetone and phenol distillation

Requirements

  • Control of sump extraction

Description

Flow measurement of end product phenol

Requirements

  • Device commissioning via Bluetooth
  • Secondary containment for inreased safety

Overview

Phenol production in the organic chemical process

Precision Instrumentation for Monitoring and Controlling Cumene Feedstock Composition in Phenol Production

Phenol is an important industrial chemical and serves as an intermediate product for example in the manufacture of plastics such as phenolic and epoxy resins as well as adhesives, solvents, wood preservatives and insecticides. Today's preferred industrial method of producing phenol is phenol synthesis in the three-stage Hock process from isopropyl benzene (cumene), which is first formed from benzene and propene. The cumene is oxidised first by means of atmospheric oxygen to form its hydroperoxide, which in a second stage, under the influence of strong acids, breaks down into phenol and acetone These two substances can then be separated at the end into two consecutive distillation chains. The simultaneous development of two easily separable, valuable products makes this environmentally-friendly process particularly cost-effective.

Today, the process focuses on increased product yield of the two co-products, as well as avoiding unusable by-products and volumes of sewage. Modern techniques can increase the oxidation degree of cumen by around 50% and thereby reduce the amounts of cumen to be recycled. However, this requires accurate process control. KROHNE offers a multitude of suitable measuring systems such as ultrasonic flowmeters with temperature and pressure sensors, that are directly connected to the device, thus allowing a high level of flexibility. These include pressure transmitters for complex process pressure and level applications such as absolute and relative pressure measurement in open tanks and – as a dual variant – for electronic differential pressure measurement.

Email
Contact