Structural compositionFabricated from seamless stainless steel tubes in spiral or serpentine layout. Assembly includes coil body, steam inlet, condensate outlet, support brackets and flange connections.

Fully immersed inside corn-steep liquor mixture; brackets fasten assembly to tank inner wall to reduce shaking and deformation induced by tank agitation.

Working principle (indirect heat exchange) Low-pressure steam flows inside tubes releases thermal energy and condenses into condensate drained from outlet.

Heat transfers through tube wall to steep liquor with no direct media contact. Paired with tank agitator for uniform tank temperature.

Linked temperature transmitters and steam regulating valves automatically modulate steam feed to stabilize steeping temperature.

Condensate is recycled for energy saving.

Operating Conditions & Material 1. Wetted media: Sulfurous acid steep liquor corn kernels with weak acidic corrosion

2. Temperature: Tank side 48–52℃.

Internal steam pressure typically 2–0.4MPa

3. Recommended material: 316L seamless stainless steel tube. Long-term deployment of plain 304 is not advised.

All welds shall undergo penetrant inspection to remove weld leakage risk. Coil leakage will let steam/condensate contaminate and dilute steep liquor and ruin the whole steeping process.

Inter-coil gaps are reserved to stop corn kernel jamming and facilitate CIP/manual cleaning.

Main technical has

1. Immersed layout provides large heat-transfer area with higher efficiency versus tank jacket heating

2. Complete media separation: Steam never contaminates corn-steeping feedstock

3. Good resistance against mild corrosive steep liquor for starch food-grade service

4. Recyclable condensate delivers favorable energy economy

5. Custom-built coil dimension and heat-exchange area according to steeping-tank volume.