Chlorine handling involves cooling, drying, compression, and liquefaction. The core operational requirements are controlling trace moisture to prevent severe equipment corrosion and nitrogen trichloride explosion risks, while monitoring chlorine concentrations to meet environmental and quality standards.
1. Key Process Control Points
Effective management of the chlorine handling and liquid storage train requires monitoring specific parameters across critical nodes.
Item | Process Location | Parameter | MZD Analytical Strategy |
28 | Secondary Drying Tower Outlet | Trace Moisture | P2O5 Electrolytic Trace Moisture Analyzer (maintains moisture < 10ppm) |
29 | Chlorine Compressor Inlet | Trace Moisture | P2O5 Electrolytic Trace Moisture Analyzer Protects compressor impellers and prevents wet chlorine ingestion |
30 | Chlorine Compressor Outlet | Trace Moisture | P2O5 Electrolytic Trace Moisture Analyzer Verifies drying performance and pre-cooler integrity |
34 | Liquid Chlorine Storage Tank | Trace Moisture | P2O5 Electrolytic Trace Moisture Analyzer Moisture <50ppm meets international premium-grade quality requirements |
38 | Tail Gas Recovery System | Cl2 Content | ensures compliant emissions |
40 | Emergency Chlorine Absorption Tower | pH | Solid-State Reference pH/ORP Analyzer maintains pH 10 to prevent absorption failure |
Process Navigation: To review the entire plant workflow from raw brine to final environmental compliance, return to the Chlor-Alkali Process: Analytical Measurement Solutions Overview.
2. Advanced MZD Instrumentation for Chlorine Handling
P2O5 Electrolytic Trace Moisture Analyzers
Moisture control in chlorine streams is exceptionally stringent to avoid wet-chlorine hydrolysis into hydrochloric and hypochlorous acids. MZD's P2O5 electrolytic analyzers are engineered specifically for corrosive acidic gases.
Corrosion-Resistant Design: Features PVDF flow cells and specialized zirconia or glass sensors to withstand aggressive media.
Absolute Measurement Technology: Provides stable, drift-free operation without the sensor-aging issues common in traditional capacitive dew-point methods.
Low Maintenance: Requires only periodic phosphoric acid regeneration every 3 to 6 months.
UV Gas Analyzers (Tail Gas & Emergency Scrubber)
For monitoring chlorine content in tail gas recovery and emergency scrubber outlets, MZD utilizes advanced UV absorption spectroscopy. These analyzers offer high selectivity for halogen gases and remain unaffected by background water vapor, carbon monoxide, or carbon dioxide.
3. Safety and Operational Benefits
Corrosion & Leak Prevention: Maintaining trace moisture below target thresholds prevents dry chlorine from turning into highly corrosive wet acid, extending equipment lifespan.
Mitigating Explosion Hazards: Proper moisture monitoring minimizes the risk of brine leakage mixing with chlorine, which forms dangerous nitrogen trichloride NCl3 accumulations.
Global Quality Compliance: Ensures liquid chlorine storage meets international <50ppm premium-grade criteria.
4. Related Process & Technical Sections
Continue exploring our specialized chlor-alkali application segments and underlying measurement technologies:
Electrolysis & Dechlorination Process ( incl. Hydrogen Safety )
Core Analytical Technologies & Instrument Profiling (Technical Column)
For detailed technical datasheets or site-specific application consultation, please contact our support team at sales@mzdd.de.