Description

Level measurement of dichlorobenzene and sodium sulphide tank

Besoins pour ce point de mesure

  • Remote converter up to 100 m / 328 ft
  • Purging system for antenna cleaning

Description

Pressure measurement of dichlorobenzene tank

Besoins pour ce point de mesure

  • Monitoring of interisation pressure

Description

Level measurement of tank with polar solvent

Besoins pour ce point de mesure

  • Approvals: ATEX, cQPSus, IECEx, INMETRO, NEPSI
  • Ceramic process seal system for demanding process conditions

Description

Pressure measurement in the polymerisation reactor

Besoins pour ce point de mesure

  • Process control

Description

Flow measurement of evaporator

Besoins pour ce point de mesure

  • Integrated P+T measurement: output of gross/net heat
  • Optional integrated reduction of nominal size for a large measurement span

Description

Evaporator head pressure measurement

Besoins pour ce point de mesure

  • Control of evaporation temperature

Description

Level measurement in evaporator

Besoins pour ce point de mesure

  • Control of sump extraction

Description

Differential pressure measurement of heat transfer fluid at evaporator

Besoins pour ce point de mesure

  • Monitoring of heat exchanger

Description

Level measurement of process tank with PPS/NaCl suspension

Besoins pour ce point de mesure

  • Extensive choice of probes for all applications
  • Optional: extended temperature and pressure conditions

Description

Level measurement of PPS powder storage tank

Besoins pour ce point de mesure

  • 80 GHz for demanding applications with powders in very dusty atmospheres
  • Empty tank spectrum function eliminates false reflections

Description

Integrated control valve with flow, pressure and temperature measurement of water

Besoins pour ce point de mesure

  • Local measurement and control of flow
  • High control quality

Overview

Polyphenylene sulphide production in plastics & polymers production

Advanced Instrumentation for Continuous Flow and Pressure Measuremnts in PPS Production

Polyphenylene sulphide (PPS) is a high-temperature resistant, especially robust thermoplastic high performance plastic for highly durable moulded parts, for example in the electronics and vehicle sector, for pump bodies or medical equipment. During the industrial manufacturing process, PPS is polymerised in the reactor by the reaction of dichlorobenzene with sodium sulphide in a polar solvent under increased temperature and pressure conditions. The result is a suspension that contains PPS and sodium chloride. The sodium chloride has yet to be removed to create PPS resin that is free from chlorine and sodium. To this end, the suspension is concentrated in an evaporation process during which the sodium chloride is removed in repeated filtering and wash processes. The PPS end product is then pulverised and packed for further processing.

KROHNE has a wide product range of level, flow, (differential) pressure and density measuring equipment for plastic and polymer products, which can be perfectly tailored to the respective technical tasks. These include, for example, our radar level meters for continuous, precise and non-contact level measurement in storage and process tanks, even with poorly reflective media. Appropriately equipped vortex flowmeters from our range allow not only simultaneous temperature and pressure measurement, but also output of the p- and T-compensated mass flow. And KROHNE's innovative electronic differential pressure transmitters for obtaining fast, undistorted measuring data are a practical alternative to diaphragm seal installations with long capillary tubes. The main advantage of an eDP system is the fact that it can be easily and efficiently connected to the tank: smaller process connections without capillaries are possible between the top and bottom gauge connections, which saves money and installation time.

Email
Contact