PTFE Lined Chemical Distillation Column

Different from reactors and receiving tanks used for reaction & intermediate buffering, the PTFE Lined Chemical Distillation Column is dedicated mass-transfer separation equipment. It handles vapor-liquid counter-current contact to realize fractionation of mixed corrosive components. The carbon-steel outer shell provides structural rigidity; seamless PTFE inner lining isolates hot corrosive steam from metal substrate, avoiding metal ion pollution and shell erosion. Multiple internals configurations (structured/random packing, distributors) can be matched to satisfy different separation-purity targets. It has been delivered to many overseas projects for solvent recycling, fluorochemical rectification and high-purity reagent purification.

What is PTFE Lined Chemical Distillation Column

PTFE Lined Chemical Distillation Column is vertical tower-shaped pressure-bearing separation equipment. Outer shell is pressure-vessel grade carbon-steel; inner wall, nozzles and manhole are fully covered by vacuum-laminated seamless PTFE lining. Its core function is distillation / rectification: hot mixed vapor rises upward while condensed liquid flows downward inside tower internals, achieving component separation via repeated vaporization-condensation cycles. This equipment is not designed for stirring reaction or simple static storage. It focuses on gas-liquid two-phase working conditions with corrosive steam. Users can select packing or tray-type internals according to separation requirements. It can be assembled with PTFE-lined reactor, receiver tank and condensers to constitute a complete closed rectification process loop.

Core Product Advantages

1. Full-Coverage Lining For Corrosive Steam Resistance All vapor-contact surfaces including tower wall, nozzle openings and internals connecting flanges adopt integral PTFE lining, resisting hot acid, alkali and fluorine-containing vapor erosion, solving the failure problem of ordinary metal distillation towers facing aggressive vapor.

2. Customizable Tower Internals For Different Purity Targets Support structured packing, random packing and liquid redistribution devices. Adjust internals configuration to meet low-cost rough separation or high-precision fine-fraction purification demands.

3. Good Vacuum Adaptability For Thermal-Sensitive Substances Vacuum-bonded PTFE lining maintains integrity under long-time negative-pressure rectification, suitable for heat-labile corrosive components which need low-boiling-point vacuum distillation.

4. Low-Residue Smooth Inner Surface Smooth PTFE lining reduces medium adhesion, convenient for switching batches and internal cleaning; lowers cross-contamination risk for multi-product production workshops.

5. Modular Tower-Section Combination Design Adopt segmented tower-section modular structure, convenient for transportation, on-site assembly and later replacement of local internals, lowering overall maintenance expense.

6. Unified Standard Flange Interface Adopt HG20536 anti-corrosion full-lined flanges, seamlessly docking with Zhuoyan series lined reactor, receiving tank, pipeline and condenser for one-stop whole-set procurement.

Complete Technical Specification Table

Professional Model Selection Suggestions

1. Confirm Separation Objective First For ordinary solvent rough recovery: choose low-cost random-packing configuration. For high-purity fine-chemical / pharmaceutical fractionation: select high-efficiency structured packing plus multi-stage liquid redistributors.

2. Select Lining Thickness According To Vapor Composition Ordinary acid-base vapor: adopt standard 3 mm PTFE lining. If medium contains hydrofluoric acid / fluorinated steam, upgrade to 4 mm thickened anti-fluoride lining.

3. Vacuum Working-Condition Reminder If long-term high-vacuum distillation is required, notify technical team to strengthen vacuum laminating craft to avoid lining delamination.

4. Modular Tower-Section Design Matching Oversized-height column adopts segmented tower-section split design, convenient for road transportation and on-site assembly. Provide plant height limitation for customized segment height.

5. Whole Process System Matching Provide drawing parameters of matched reactor, receiver tank and condenser. Our team optimizes nozzle position and flange size to realize zero-transformation docking of the whole rectification loop.

FAQ

Q1: Can this PTFE Lined Chemical Distillation Column run stably under long-term vacuum rectification? A: Yes, vacuum-integrated PTFE lining can steadily work under -0.09 MPa negative pressure, suitable for heat-sensitive corrosive medium vacuum distillation.

Q2: Can I change different tower internals for different separation-purity requirements? A: Yes, modular design supports replacement of packing and redistributor components to adjust separation performance without changing tower shell.

Q3: Is this distillation column suitable for rectification containing hydrofluoric acid vapor? A: It can be used after upgrading to 4 mm thickened anti-fluoride PTFE lining; please inform our technical team of vapor composition in advance.

Q4: Super-high tower cannot be transported as one piece. How to solve this problem? A: We adopt segmented modular tower-section production, complete field assembly after delivery, adapting transportation height limit.

Q5: Can you supply matched PTFE-lined reactor and receiving tank as a full rectification set? A: Unified flange standard, supporting one-stop procurement of complete rectification production-line equipment.

Q6: What is the warranty scope for distillation column? A: Carbon-steel shell enjoys 10-year structural warranty; PTFE lining 5-year warranty (exclude artificial scratch and improper operation damage).