Expandable cleaning device
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Solution Overview
Problem
Existing air purification systems fail to efficiently remove elemental mercury (Hg0) from flue gas and oxidized mercury (Hg2+) from waste liquid, with activated carbon injection technology being costly and its mercury removal efficiency is affected by NOx and SO2.
Innovation Solution
Utilization of metal sulfides (e.g., FeS2, CuS, CuS, CuS) as mercury removal adsorbents, which contact with flue gas and waste liquid, adsorbing and converting Hg0 from flue gas and Hg2+ from waste liquid into stable mercury sulfide compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If activated carbon injection technology is used for mercury removal, then mercury removal capability is provided, but operational costs increase and removal efficiency is affected by NOx and SO2
Solution Approach 1:
The patent employs inexpensive metal sulfide materials (such as FeS2, CuS) as disposable or regenerable adsorbents for mercury removal, replacing expensive activated carbon. These metal sulfides can be obtained at low cost and provide effective mercury capture without the high operational costs associated with activated carbon injection systems.
Solution Approach 2:
The patent changes the chemical parameters of the adsorbent material from carbon-based to metal sulfide-based compounds. This parameter change fundamentally alters the removal mechanism and efficiency characteristics, making the process less sensitive to NOx and SO2 interference while reducing operational costs.
2Object-affected harmful factors
If activated carbon injection technology is used for mercury removal, then mercury removal capability is provided, but secondary pollution is generated and operational costs increase
Solution Approach 1:
The patent converts the potentially harmful interaction between adsorbents and flue gas components into a beneficial selective removal process. Metal sulfides specifically target and remove mercury while being chemically stable toward NOx and SO2, transforming what could be interfering reactions into a selective advantage that prevents secondary pollution.
Solution Approach 2:
By using inexpensive metal sulfide materials that can be disposed of or regenerated without creating harmful byproducts, the system eliminates the secondary pollution issues associated with activated carbon consumption and replacement, while maintaining effective mercury removal capability.
3Productivity
If multiple cleaning devices are increased to improve air pollution processing efficiency, then processing speed increases, but installation cost and device complexity increase
Solution Approach 1:
The patent combines multiple functional components (flow guiding main body, filtration elements, gas guiders, networking controller) into an integrated cleaning device system. This merging allows multiple devices to work cooperatively as a unified system, improving overall processing efficiency while reducing the need for numerous separate units and simplifying installation and control.
Solution Approach 2:
The cleaning device is designed with multi-functional capabilities through its expandable flow guiding pathways and modular gas guider configuration. A single device can be adapted to handle different air volumes and pollution levels by adjusting the number and arrangement of gas guiders, eliminating the need for multiple specialized devices for different scenarios.
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
Achieves efficient, cost-effective, and environmentally friendly simultaneous removal of Hg0 from flue gas and Hg2+ from waste liquid, avoiding secondary pollution and reducing operational costs.
Implementation Method 1
metal sulfides (e.g., FeS2, CuS, CuS, CuS) as mercury removal adsorbents, which contact with flue gas and waste liquid, adsorbing and converting Hg0 from flue gas and Hg2+ from waste liquid into stable mercury sulfide compounds
Data Source
AI summary
An expandable cleaning device includes a flow guiding main body including a flow guiding pathway extendable in longitudinal/lateral direction to form expanded flow guiding path, fluidly communicated with a gas entrance and a gas exit; a filtration element disposed in the flow guiding pathway and covering the gas entrance for filtering air pollution; a gas guider having a CADR for guiding air pollution into the flow guiding pathway; and a networking controller receiving a control instruction for activating the gas guider, wherein after a required equivalent of CADR of indoor field is intelligently computed, and a number of gas guider and an optimal CADR thereof are decided, an assembled expandable cleaning device complying with the required equivalent of CADR is formed by the flow guiding main body to provide the expanded flow guiding path for disposing the gas guider, thereby achieving a purification procedure the air pollution close to zero.