Isoparaffin Distillation Unit

The XINYU HUACHUANG Isoparaffin Distillation Unit is a highly specialized, continuous fractional separation system specifically engineered for the purification of synthetic isoparaffin solvents. Designed to meet the stringent quality requirements of the personal care, industrial cleaning, and specialty chemical industries, this unit accurately controls reflux ratios, heating temperatures, and distillation rates to isolate narrow-boiling fractions. Equipped with intelligent PLC automation and multi-level safety interlocks, the Isoparaffin Distillation Unit ensures safe, unattended long-term operation while delivering ultra-high purity, low-odor, and low-aromatic hydrocarbon products for process optimization and scale-up.

How It Works?

The unit operates on a continuous fractional distillation principle. The crude isoparaffin feedstock is continuously metered into the reactor and heated. Because isoparaffins are characterized by narrow boiling ranges and specific carbon number distributions (e.g., C11, C12, C16), precise multi-zone temperature control is critical. As the vapor ascends through the high-efficiency fractionating column, it undergoes repeated condensation and revaporization. Light ends and normal paraffins are continuously drawn from the top, while the target high-purity isoparaffin fraction is collected as a side-draw or bottom product based on precise cut-points. The entire process is meticulously managed by the Isoparaffin Distillation Unit to maintain optimal thermal uniformity, ensuring excellent cold properties, low viscosity, and superior solvency power in the final product.

What are the distinctive advantages?

● Narrow-Fraction Precision: Features high-efficiency structured packing and precise reflux control to achieve extremely narrow boiling ranges, ensuring consistent evaporation rates and superior drying times.

● Ultra-High Purity & Low Odor: Optimized separation efficiently removes normal paraffins, aromatics, and sulfur compounds, yielding colorless, odorless, and highly stable synthetic hydrocarbons.

● Intelligent PLC Automation: Centralized control system enables unattended long-term operation, automated reflux ratio adjustment, and real-time data logging for temperature and flow rates.

● Thermal Stability Control: Precise heating jackets prevent localized overheating, preserving the chemical stability and low pour-point characteristics of the isoparaffin.

● Robust & Safe Construction: Built with premium metallurgy (e.g., SS316L) and multi-level safety interlocks (over-temperature, over-pressure, dry-heating protection) to ensure safe operation in flammable environments.

Technical Specifications

Where is it applicable?

● Personal Care & Cosmetics: Purification of isoparaffin solvents for skincare, sunscreens, and makeup, providing a non-greasy,清爽 (refreshing) skin feel.

● Industrial Cleaning & Metalworking: Production of high-purity, low-odor cleaning fluids, metal degreasers, and EDM (Electrical Discharge Machining) oils.

● Specialty Coatings & Inks: Formulation of narrow-fraction solvents for decorative paints, printing inks, and sealants to ensure consistent drying and leveling.

● Aerosol Propellants: Purification of isoparaffins for use as safe, low-VOC propellants in personal care and household sprays.

● Chemical Synthesis: Serving as high-purity reaction carriers, peroxide carriers, and PVC plastisol reducers.

Usage Precautions

● Flammability & Safety: Isoparaffins are flammable hydrocarbons. Always operate the unit in a well-ventilated area, ensure all electrical components are properly grounded, and keep ignition sources away.

● Precise Temperature Profiling: Isoparaffin separation relies heavily on accurate temperature control. Always allow the system to reach thermal equilibrium before adjusting the reflux ratio or collecting fractions.

● Inert Purging: Always purge the system with an inert gas (N2) before heating to prevent the formation of explosive vapor-air mixtures in the column.

● Vacuum Safety: When operating under vacuum to lower boiling points and prevent thermal degradation, always inspect glass or metal components for structural integrity and use appropriate safety shielding.

Maintenance Guide

● Daily: Check the levels of heating media (oil/water) and cooling water. Inspect the system for any unusual odors, leaks, or abnormal noises from the pumps and vacuum systems.

● Weekly/Monthly: Clean or replace feedstock pre-filters to prevent heavy residues from fouling the column packing. Inspect all PTFE gaskets and mechanical seals for wear and replace if necessary.

● Quarterly: Calibrate temperature sensors, mass flow controllers, and reflux ratio controllers to maintain separation accuracy. Inspect the electric heating jacket elements for uniform performance.

● Post-Operation: Always follow a proper shutdown sequence: stop the feed, maintain reflux to clear the column, and cool the system under inert gas flow before draining and storing to prevent oxidation or moisture absorption.

After-Sales Service & Support

At XINYU HUACHUANG, we are committed to providing comprehensive and reliable after-sales support to ensure the continuous and efficient operation of your equipment. Our dedicated service team is always ready to assist you.

Comprehensive Warranty Coverage

We proudly offer a two-year warranty for our equipment. During this period, we provide free maintenance and repair services for any quality-related issues, excluding those caused by improper operation, unauthorized modifications, or force majeure. For equipment beyond the two-year warranty period, we continue to offer lifelong maintenance services, charging only the cost of replacement parts and labor.

Rapid Response Mechanism

We offer 7×24 hours professional engineering telephone support. Upon receiving a fault notification, our technical team will respond within 24 hours and provide a viable solution. If on-site service is required, our professional engineers will arrive at your facility within one week. In special circumstances where the equipment cannot be repaired, we will unconditionally replace it with a new unit or provide a substitute unit during the two-year warranty period, or take necessary measures to restore normal operation.

Frequently Asked Questions (FAQ)

Q1: Why is precise multi-zone temperature control critical when distilling isoparaffins?

A: Isoparaffins are characterized by narrow boiling ranges and specific carbon number distributions (e.g., C11, C12, C16). Even small temperature deviations can cause adjacent carbon number fractions to contaminate each other. Multi-zone temperature control ensures sharp cut-points between fractions, delivering the specific isoparaffin grade your application requires.

Q2: How does the unit separate isoparaffins from normal paraffins?

A: Although isoparaffins and normal paraffins of the same carbon number have similar boiling points, the high-efficiency fractionating column with precise thermal management exploits the small boiling point differences between these structural isomers. Repeated condensation and revaporization across many theoretical stages progressively enrich the target isoparaffin fraction.

Q3: What product properties does proper isoparaffin distillation ensure?

A:The multi-stage distillation system can produce methanol that meets the AA-level industrial standards (with a purity of ≥ 99.9%), and can be configured as an electronic grade specification by increasing the number of refining stages. The device can effectively separate methanol from water, ethanol, higher alcohols and trace impurities.

Q4: What are the typical end-use applications for the purified isoparaffin fractions?

A: High-purity isoparaffins are used as specialty solvents in dry cleaning and industrial degreasing, as base fluids for metalworking and hydraulic fluids, as components in cold-flow improver additives, and as carrier fluids in aerosol and coating formulations. The narrow carbon number distribution achieved by this unit is critical for all these applications.

Q5: Can the unit produce multiple isoparaffin grades simultaneously?

A: Yes. The side-draw capability allows different carbon number fractions to be collected at different points along the column. Light ends and normal paraffins are drawn from the top, while specific isoparaffin cuts (e.g., C11, C12, C16) can be collected as separate side-draw products, maximizing the value extracted from each batch of crude feedstock.