Wuhan Donghai has continuously accumulated data and experience in the design and manufacturing of coiled-tube heat exchangers. The company has systematically developed a technical roadmap—from design and manufacturing to installation, commissioning, and technical services—for both single- and multi-stream coiled-tube heat exchangers, and has even created a specialized selection guide. Additionally, Wuhan Donghai has successfully completed the production and deployment of coiled-tube heat exchangers across multiple industries, including ultra-high molecular weight polyethylene synthesis, sulfur recovery, and low-temperature methanol washing systems.

Engineering Applications

1-1 Synthetic Ammonia-Methanol Wash System
1-2 Coal Gasification and Purification System
1-3 Coal-to-Ethylene Glycol Reactor Unit
1-4 Coal-to-Methanol Synthesis Tower Feed and Effluent Heat Exchange System

2-1 Air Separation System: Liquid Ammonia and Liquid Oxygen Units
2-2 Natural Gas Liquefaction and Purification Unit
2-3 Industrial Tail Gas-to-Ethylene Glycol Reaction Unit
2-4 Sulfur Recovery Unit for Treating Sulfur-Containing Industrial Tail Gases

3-1 Oil Refining and Hydroprocessing Unit
3-2 Oil Refining and Reforming Unit

Licensed Patent

Patent No.	Name
ZL.2015 2 0318046.8	A wrapped tube reactor for sulfur recovery and production in a sulfur plant
ZL.201521051835.6	A detachable staggered winding tube coal to ethylene glycol reactor
ZL.2015 2 0885844.9	A winding tube cooler suitable for ultra-high molecular weight polyethylene polymerization kettle
ZL.2015 2 0330563.7	A vertical winding tube reactor
ZL.2014 2 0127021.5	A connection structure between detachable heat exchange tubes and tube sheets

Patent illustration

Licensed Patent

Our company’s applied computer-aided technologies primarily include: 2D and 3D CAD drafting technology, SW6 process equipment design technology, PVElive—U.S. ASME pressure vessel design technology, HTRI heat transfer process design technology, ANSYS finite element analysis technology, and computational fluid dynamics technology.