Ruike Wiped Film Evaporator Manufacturing
Wiped Film Evaporator (WFE) – engineered specifically to solve separation challenges of high-boiling point, high-viscosity, and heat-sensitive materials in petrochemical distillation.
Ruike advanced rotating scraper blade forced-film formation combined with vacuum flash evaporation technology delivers 40%-60% improved evaporation efficiency. The self-cleaning anti-fouling structure ensures continuous operation, making it the preferred high-efficiency equipment for lubricating oil fraction extraction, residue oil de-lighting, and asphalt feedstock refining.
Equipment Structure & Working Principle
The wiped film evaporator adopts a three-layer structural design
Power System
Motor + Reducer: Precision control of scraper blade rotation speed (5-300 rpm adjustable)
Evaporation Chamber
• Steam Jacket Shell: Provides uniform heat distribution. •Rotor + Scraper Assembly: Features four patented scraper types (sliding, hinged, fixed, and adjustable). Forces feed into 0.1–1 mm turbulent liquid film for rapid evaporation. •Feed Distributor + Separator Drum: Ensures uniform material distribution for consistent film formation.
Separation System
Gas-Liquid Separator: High-efficiency droplet capture. Bottom Head: Allows rapid discharge of high-temperature residues.
Complete Process Analysis in Petrochemical Plants
| Step | Equipment Integration | Function |
|---|---|---|
| Feed Flash Evaporation | De-lighting Vessel → Scraped Film Evaporator | Raw oil instantaneous film flash evaporation under vacuum (≤-0.09MPa) and scraper blade action |
| Light Component Path | Evaporator → Packed Vacuum Column → Heat Exchanger → Water Cooler → Reflux Tank | Gasoline/diesel component three-stage purification with 30% purity improvement |
| Heavy Component Path | Collection Tank → Intermediate Cooler → Buffer Tank → Cracking Vessel | Heavy distillate temperature-controlled liquefaction for cracking processing |
| Residue Path | Evaporator Bottom Head → Residue Oil Tank → Buffer Pump → Asphalt Storage | High-temperature residue (>350℃) direct conversion to asphalt feedstock |
Process Flow Advantages
"Four-Step High-Efficiency Separation" Technology
Instantaneous Film Flash Evaporation
Rotating Scraper + Vacuum Synergy: 0.1-1mm liquid film thickness, 50%+ boiling point reduction
Light Component Deep Purification
Column-Equipment-Tank Three-Stage Control: Gasoline/diesel fraction entrainment <0.01%
Heavy Component Precision Control
Dual Reflux Technology: Intermediate draw temperature fluctuation ≤±2℃
Residue Resource Recovery
Bottom Head Direct Discharge Design: Residue residence time <10 seconds, prevents secondary coking
Core Technical Advantages of Ruike WFE
| Advantage | Structural/Process Support | Petrochemical Application Value |
|---|---|---|
| 60% Evaporation Intensity Improvement | Self-cleaning scraper + ultra-thin turbulent liquid film | Residue oil processing capacity: 5t/h·㎡ (2x industry standard) |
| 10-60 Second Short-Time Evaporation | Falling film structure + bottom head direct discharge design | 90% reduction in olefin polymerization rate |
| 120% Operating Flexibility | Four-type adaptive scraper blades (4cP~50,000cP viscosity range) | No buffer tank required for feed fluctuations |
| Anti-Corrosion Zero Fouling | 316L stainless steel scrapers + gas-liquid separation anti-entrainment | >5 years service life in high-sulfur oil applications |
Typical Applications
✅ Crude Oil De-lighting & Refining
Scraper film prevents coking of heavy oils
✅ Heavy Oil Fraction Purification
Dual-reflux zone precisely controls temperature distribution
✅ Asphalt Feedstock Processing
Direct bottom discharge integrates with residue tank for efficient transfer
✅ Pharmaceutical & Food Concentration
Short residence time retains active ingredients in sensitive products
Why Choose Ruike Wiped Film Evaporator?
🔧Patented Scraper System
Matched to oil viscosity characteristics
Includes a scraper selection guide based on material viscosity and boiling point
🔗 Seamless System Integration
Pre-fabricated flanges connect easily to decompression towers or cracking reactors
Reduces on-site installation time by up to 50%
📡 Intelligent Control System
Real-time display and adjustment of film thickness and evaporation temperature
Automatic scraper speed control for process optimization
Customized Project
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We offer you the equipment lists, cost analysis statements, and layout according to your site of regular models.
If you have any special requirements about your project, please contact Nancy, and we will offer you a customized project plan for you.
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