Tubular Heat Exchanger At Oil Mill
Tubular (shell-and-tube) heat exchangers are indispensable process equipment widely used in edible oil mills, covering crude oil pretreatment, oil refining, deacidification, deodorization and waste heat recovery processes. Designed to handle crude vegetable oil, refined oil, steam, hot water and cooling media, these exchangers perform heating, cooling and heat recovery to improve production efficiency and reduce energy consumption for oil pressing and refining workshops.
Main Working Positions & Functions in Oil Mill Production Line
1. Crude Oil Preheater
Steam heats crude vegetable oil to proper temperature before degumming and neutralization. Improve fluidity of crude oil, enhance separation effect of gum and free fatty acids.
2. Heat Recovery Exchanger (Hot-Refined Oil / Cold Crude Oil)
High-temperature refined oil from deodorizer transfers heat to incoming cold crude oil. Recycle waste heat and cut steam consumption, the most energy-saving unit in oil refining sections.
3. Deodorizer Cooling Heat Exchanger
Cool high-temperature edible oil after deodorization rapidly to stop thermal oxidation, guarantee oil quality and color stability.
4. Washing Water & Bleaching Earth Supporting Heating/Cooling
Control temperature of process water for oil washing and bleaching procedures to maintain stable refining indicators.
5. Condenser for Deodorization Vacuum System
Condense oil vapors and distillate free fatty acids extracted during deodorization; recover valuable by-products and protect vacuum pumps.
Working Principle
Hot medium (steam / hot oil) and cold medium (crude oil / cooling water) flow separately on tube side and shell side. Heat transfers through tube walls to realize medium heating or cooling. Counter-flow design maximizes heat transfer efficiency.
For edible oil grade service, smooth internal surfaces minimize oil residue adhesion and avoid local overheating that deteriorates oil quality.
Key Design Features for Oil Mill Service
Food-grade material options: 304 / 316L stainless steel tube bundle, compliant with food processing requirements
Polished internal flow channels to reduce oil fouling, easy CIP cleaning
Optimized low-flow-resistance channel to prevent edible oil overheating and oxidation
Detachable water box / pull-out tube bundle for convenient cleaning and maintenance
Strict pressure and tightness testing; customized capacity matched with small, medium and large oil pressing & refining production lines
Anti-coking structure to avoid long-time oil retention and carbon deposition
Core Advantages
Recover waste heat effectively, greatly reduce steam cost for oil refining
Precisely control process temperature to stabilize edible oil quality, color and acid value
Easy cleaning to prevent cross-contamination between batches of oil products
Continuous stable operation adapting 24-hour oil mill production
Long service life, low failure rate and reduced production downtime
Typical Application Scenarios
Vegetable oil pressing plant: soybean oil, sunflower oil, palm oil, rapeseed oil production
Edible oil refining workshops (degumming, neutralization, bleaching, deodorization)
Palm oil fractionation heating and cooling system
Free fatty acid recovery vacuum condensation system
Waste heat recovery project of large-scale oil mill
