Ship exhaust gas waste heat utilization type denitration system

By using an S-shaped heat exchange manifold and flow-blocking components in the ship's exhaust gas treatment equipment, the medium passage time is extended, solving the problem of low heat exchange efficiency and achieving efficient waste heat utilization and SCR denitrification effect.

CN224524457UActive Publication Date: 2026-07-21CHENPAN ENVIRONMENTAL TECH (YANCHENG) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENPAN ENVIRONMENTAL TECH (YANCHENG) CO LTD
Filing Date
2025-08-25
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing ship exhaust gas treatment equipment suffers from space constraints, resulting in low heat exchange efficiency and a lack of effective flow guidance structures. This makes it impossible to meet the high-efficiency demand for waste heat from urea preheaters and compressed air heaters, thus affecting the overall operation of the SCR denitrification system.

Method used

The heat exchange manifold with an S-shaped structure and a baffle assembly extends the passage time of the heat exchange medium in the heat exchanger. The medium is guided to flow obliquely through the gap between the baffle assembly and the corner of the heat exchange manifold, thereby increasing the heat exchange time and improving the contact efficiency between the exhaust gas and the medium.

Benefits of technology

It significantly improved the efficiency of waste heat utilization, met the high-efficiency requirements of urea preheaters and compressed air heaters, and enhanced the operating performance of marine diesel engine SCR denitrification systems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of ship exhaust waste heat utilization type denitration systems, it is related to SCR denitration technical field, including tail gas recovery bin, heat exchanger, scr denitration device and chimney, one end of the heat exchanger is communicated with tail gas recovery bin by tail gas inlet pipe, the other end of the heat exchanger is communicated with scr denitration device by tail gas exhaust pipe, the heat exchanger is installed in the inside of shell, the utility model is by the heat exchange manifold extension and multiple bending into S shape structure, the length of heat exchange manifold is effectively increased in limited space, and the clearance formed by the corner of flow blocking component and heat exchange manifold is utilized, heat exchange medium is guided to flow obliquely downwards, the passing time of heat exchange medium in heat exchanger is greatly extended, the contact time of tail gas and heat exchange medium is significantly improved, to improve waste heat utilization efficiency, meet the efficient demand of urea preheater and compressed air heater to waste heat, help ship diesel engine SCR denitration system better operation.
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