Two-Stage Ammonia Absorption for Compact Floating Abatement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ammonia abatement systems in floating bodies face challenges in efficiently managing ammonia gas due to limited space, necessitating improved efficiency to prevent environmental impact.
Innovation Solution
An ammonia abatement system with a gas flow line, first and second dilution sections, and adjustment valves that absorb ammonia into absorbing liquids under varying pressures, along with a control device to optimize ammonia concentration and supply, enhancing absorption efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional single-stage absorption system is used, then the system structure is simple, but the ammonia abatement efficiency is insufficient
Solution Approach 1:
The absorption system is divided into multiple stages: a first absorption section that absorbs ammonia under pressurized conditions, and a second absorption section that absorbs remaining ammonia under atmospheric pressure. This segmentation allows each stage to operate under optimized conditions, significantly improving overall ammonia abatement efficiency while maintaining manageable system complexity through modular design
Solution Approach 2:
The system transitions from single-stage to multi-stage absorption, adding a temporal and operational dimension to the process. By sequencing absorption operations across different pressure conditions, the system maximizes ammonia removal efficiency without requiring a single oversized complex absorber
2Object-affected harmful factors
If ammonia is discharged directly into the environment, then the discharge process is simple, but environmental pollution occurs
Solution Approach 1:
The system converts the harmful ammonia gas into beneficial absorbed ammonia in liquid form through the dual-stage absorption process. The first absorption section captures the bulk of ammonia under pressure, and the second absorption section captures remaining ammonia at atmospheric pressure, transforming the pollutant into a contained liquid solution that can be safely stored or processed
3Volume of moving object
If a compact abatement system is installed in limited space, then the space utilization is improved, but the ammonia abatement efficiency decreases
Solution Approach 1:
The system uses segmented absorption sections that can be compactly arranged. The first absorption section handles high-concentration ammonia under pressure, while the second absorption section handles residual ammonia, allowing efficient use of available space through functional segmentation rather than requiring a single large complex structure
Solution Approach 2:
The system changes operational parameters between stages - using pressurized conditions in the first absorption section to maximize ammonia capture efficiency, then switching to atmospheric pressure in the second section. This parameter optimization allows high abatement efficiency in a compact configuration by leveraging pressure-differential driven mass transfer
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system significantly increases ammonia abatement efficiency by maximizing absorption in multiple stages, reducing ammonia concentration effectively, and allowing for simple configuration without complex equipment like absorption towers.
Implementation Method 1
the first dilution section is configured to cause ammonia contained in the ammonia-containing gas that is supplied from the gas flow line to be absorbed into a first absorbing liquid in a pressurized state
Implementation Method 2
the second dilution section is configured to cause ammonia contained in the primary treated gas that is supplied through the first sending line to be absorbed into a second absorbing liquid under a pressure lower than a pressure in the first dilution section
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An ammonia abatement system includes: a gas flow line through which an ammonia-containing gas flows; a first dilution section that causes ammonia contained in the ammonia-containing gas that is supplied from the gas flow line to be absorbed into a first absorbing liquid in a pressurized state; a first sending line through which a gas in a gas phase in the first dilution section is capable of being sent to an outside of the first dilution section as a primary treated gas; a second dilution section that causes ammonia contained in the primary treated gas that is supplied through the first sending line to be absorbed into a second absorbing liquid under a pressure lower than a pressure in the first dilution section; and an adjustment valve that is provided in the first sending line and adjusts supply of the primary treated gas from the first dilution section to the second dilution section.