Movable Emissions Control System for Ship Auxiliary Diesel Engines
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Solution Overview
Problem
Current options for reducing emissions from diesel auxiliary engines on ocean-going ships at berth are often cumbersome, expensive, and not available, posing compliance challenges with regulations like the CARB at-berth regulation, and there is a lack of affordable alternative control techniques to shore power connections.
Innovation Solution
A movable emissions reduction system comprising an emissions capturing system with a telescoping duct and an emissions control system mounted on a mobile chassis or barge, which captures diesel engine exhaust and treats it to achieve regulatory compliant emissions, providing an alternative to shore power connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If shore power connections are used to reduce emissions, then emission reductions are achieved, but the system becomes cumbersome and expensive
Solution Approach 1:
The invention extracts the emissions treatment function from the ship's auxiliary engines and relocates it to a separate, movable emissions control system positioned on the dock. This separates the power generation function (auxiliary engines) from the emissions control function, allowing the ship to continue operating its engines while emissions are captured and treated externally through a telescoping duct system that connects to a treatment unit on the dock.
Solution Approach 2:
The invention introduces a movable emissions control system as an intermediary between the ship's auxiliary engines and the atmosphere. This intermediary system captures exhaust gases through a telescoping duct, transports them to a treatment unit on the dock, and processes them through various emission control technologies, thereby mediating the harmful interaction between engine operations and environmental pollution.
2Object-generated harmful factors
If shore power connections are used to reduce emissions, then emission reductions are achieved, but the cost increases
Solution Approach 1:
The invention enables the ship to self-manage its emissions problem by using its own auxiliary engines to generate power while a movable control system on the dock handles emissions treatment. This eliminates the need to purchase expensive shore power services, as the ship continues to operate its own engines but treats emissions through an externally positioned but independently operable system that the ship can access and use at its own operational节奏.
Solution Approach 2:
The invention employs a dynamic, movable emissions control system that can be positioned and repositioned as needed rather than requiring fixed infrastructure. The telescoping duct and mobile control unit can adapt to different ship positions and operational requirements, providing flexibility that reduces infrastructure investment costs while maintaining effective emissions control.
3Quantity of substance
If alternative control techniques are developed, then affordability improves, but the techniques must achieve equivalent emission reductions
Solution Approach 1:
The movable emissions control system is designed with multi-functionality to handle various types of exhaust gases from different auxiliary engines through a single integrated platform. The system can incorporate multiple emission control technologies (such as scrubbers, catalytic converters, or selective catalytic reduction) within one mobile unit, making it a universal solution that can serve multiple ships with different engine types while maintaining cost-effectiveness and achieving equivalent emission reductions to shore power.
Data Source
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AI summary
A mobile emissions control system is provided for diesel engines operated on ocean¬ going ships at-berth. The emissions control system comprises two essential elements: an emissions capturing system and an emissions control system. The emissions control system may be mounted on a towable chassis or mounted on a barge, allowing it to be placed alongside ocean-going ships at-berth. The emission capturing system captures exhaust from a ship's diesel engine and conducts it into the emissions control system, which cleans the exhaust and then passes clean air into the atmosphere through an exhaust outlet.