ABB Application Description - pH ORP Measurement. Sugar Mill Carbonation Process Application Note
Summary
Specialized pH/ORP measurement solutions for harsh industrial environments, designed specifically for sugar mill carbonation processes. This manual details critical applications within sugar refining, addressing the challenges of high temperatures and extreme alkalinity (pH > 11). The advanced ABB sensor range provides reliable, non-fouling measurements essential for maintaining tight process control during both primary and secondary carbonation stages. Ideal for plant engineers and automation professionals requiring robust monitoring in corrosive conditions where traditional sensors fail.
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B M SU EM ENT & A LY TI S | PPLI ATI N DE SCR TI
p H/ORP measurement Sugar mill carbonation process
Measurement made easy
Sugar refining sugar mill carbonation process Introduction
Milling crushes, shreds or presses the cane or beets to extract the juice to which calcium oxide (milk of lime) is added. The calcium oxide raises the p H of the juice to a little over 11 and the water in the juice reacts with the calcium oxide to form calcium hydroxide. The chemical addition has three desirable effects: • The high p H prevents the sugar from becoming starch or reverting to non-sucrose forms • Organic acids are changed into salts for removal by precipitation later in the process • Foreign matter is retained in suspension for removal by filtration
To prevent scale buildup in subsequent stages, the mill must remove the excess lime via carbonation.
Page Summary Contents For ABB Application Description - pH ORP Measurement. Sugar Mill Carbonation Process Application Note
Manual Details
| Brand | Measurement |
|---|---|
| Pages | 4 |
| File Size | 1.34 MB |
| Published | June 03, 2026 |
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Frequently Asked Questions
What are the challenges when measuring pH during carbonation?
The process is hostile to sensors, and high-temperature measurements and precipitation can cause coating issues.
Which ABB sensor models are recommended for sugar mill applications?
The TBX587, TBX551, or TBX557 sensors are recommended. They are retractable and designed for cleaning/calibration.
Is there a better material for pH sensing in very high-pH environments (above 11)?
No specific highly resistant material is mentioned above 11 pH; for applications below 11, glass is ideal.
How should the pH sensor be installed if it needs to go into the process stream?
ABB recommends a retractable sensor with an extraction housing that includes flushing ports.