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Diazotization vessel

Level
Diazotization vessel

Overview

In the diazotization process, the individual raw materials for colour pigment production are prepared so that they will react to become diazonium compounds ready for the subsequent ‘coupling’ vessel where they form the final crude pigment or ‘azo dye’. The basic starting materials for these compounds are hydrochloric acid, water, sodium nitrite and the diazo component (usually aniline). To preserve the material quality during formulation, the mixture is kept cool by adding ice or via a cooling jacket. During this process, the level must be carefully monitored and kept constant.

Operating Conditions

Measuring Task
Level measurement
Measuring Point
Tank
Medium
Sodium nitrite, aniline, acid
Measuring Range
4 m
Temperature
+20 ... +24 °C
Pressure
0 … 0 bar

Challenges

  • Aggressive media

Benefits

  • Reliable: Accurate measurement unaffected by changing product properties
  • Cost effective: Maintenance-free operation thanks to non-contact measurement technology
  • User friendly: Simple installation from above

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