Shell and tube heat exchanger

stainless steelstainless steelcustom-made

Product overview
The double-tube-sheet shell-and-tube heat exchanger uses independent tube sheets for the tube side and the shell side to minimize cross-contamination risk, enable timely leak detection and support safe production. It is intended for processes where mixing of tube-side and shell-side media is strictly prohibited and where sanitary design and full drainage are required.

Key features

• Double-tube-sheet design with an intermediate leak-monitoring chamber to detect and locate leaks between tube and shell sides.
• Prevents cross-contamination between media in tube and shell circuits; suitable for strict separation requirements.
• Sanitary-grade construction: stainless steel tubing (e.g., 316L) and smooth internal surfaces to facilitate cleaning and sterilization.
• Full-drain design with bottom drain valve for condensate, wash water and residues; compatible with CIP/SIP procedures.
• Customizable dimensions and configurations to meet process and industry standards.

Typical applications

• Chemical industry processes where cross-mixing is forbidden.
• Petrochemical and refining projects — Hengli Petrochemical (20 million t/y integrated refining & chemical project), Xinjiang Daqo, Dalian Hengli.
• Food and beverage processing with high hygiene requirements.
• Polysilicon and other high-purity production lines.

Technical specifications

• Design: double tube-sheet (independent tube sheets for tube and shell sides) with provision for leak monitoring.
• Materials: sanitary stainless steel tubing (e.g., 316L) and compatible shell materials; material selection per process requirements.
• Inspection & monitoring: access for leak detection between tube sheets; ports configurable for sensors or visual checks.
• Maintenance: full-drain layout, bottom drain valve, smooth tube surfaces to reduce dead zones and simplify cleaning/sterilization.
• Compliance: configurable to meet industry-specific codes and sanitary standards.