Electric Working Machine Battery Layout for Counterweight Stability
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Solution Overview
Problem
The removal of elemental mercury (Hg0) from flue gas and oxidized mercury (Hg2+) from waste liquid is inefficient in existing technologies, particularly due to the high costs of activated carbon injection and interference from NOx and SO2.
Innovation Solution
The use of metal sulfides, such as FeS2, CuS, and CuFeS2, as adsorbents that contact flue gas and waste liquid to adsorb and convert Hg0 and Hg2+ into stable mercury sulfide compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If activated carbon injection is used to remove mercury, then mercury removal efficiency is improved, but operational costs increase significantly
Solution Approach 1:
The patent replaces expensive activated carbon with inexpensive metal sulfide particles that can be injected directly into the flue gas stream. These metal sulfide adsorbents are much cheaper than activated carbon while providing effective mercury removal, directly addressing the high operational cost issue.
Solution Approach 2:
The patent changes the chemical composition parameter of the adsorbent from carbon-based to metal sulfide-based materials. This parameter change enables the system to achieve effective mercury removal through chemical reaction mechanisms rather than just physical adsorption, reducing costs while maintaining or improving efficiency.
2Reliability
If activated carbon injection is used for mercury removal, then mercury removal efficiency is improved, but system complexity increases due to interference from NOx and SO2
Solution Approach 1:
The patent introduces metal sulfide particles as an intermediary substance that facilitates mercury removal through chemical reactions. These metal sulfides act as mediators that can selectively react with mercury species in the presence of NOx and SO2, simplifying the overall system by eliminating the need for complex pre-treatment stages.
Solution Approach 2:
The patent extracts the mercury removal function from a complex multi-stage system and implements it through a single injection point of metal sulfide particles. This extraction approach simplifies the system by removing the need for separate handling of NOx and SO2 interference that would be required with activated carbon systems.
3Object-affected harmful factors
If the diesel engine is removed to move towards electric vehicles, then environmental performance is improved, but weight distribution and stability are worsened
Solution Approach 1:
The patent extracts the counterweight function from the diesel engine and relocates it to the electric energy storage unit. By positioning the energy storage unit on the opposite side of the operator cab, the system maintains proper weight distribution and stability without requiring the heavy diesel engine.
Solution Approach 2:
The electric energy storage unit serves multiple functions: it provides electrical power to the machine and simultaneously acts as a counterweight for stability. This multi-functionality eliminates the need for separate ballast components while maintaining proper weight distribution.
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
This approach achieves efficient and cost-effective simultaneous removal of Hg0 from flue gas and Hg2+ from waste liquid, avoiding secondary pollution and reducing operational costs.
Implementation Method 1
metal sulfides, such as FeS2, CuS, and CuFeS2, as adsorbents that contact flue gas and waste liquid to adsorb and convert Hg0 and Hg2+ into stable mercury sulfide compounds
Implementation Method 2
convert Hg0 and Hg2+ into stable mercury sulfide compounds
Data Source
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AI summary
A working machine (1) comprising a machine body (2) having an operator cab (3), a ground engaging propulsion structure to permit movement of the machine over the ground, a load handling apparatus (6, 7) coupled to the machine body and moveable by a movement actuator (10) with respect to the machine body, and an electric energy storage unit for providing power to the working machine. The working machine comprises a longitudinal axis (A3), wherein the operator cab is positioned towards a first side of the working machine with respect to the longitudinal axis, and the electric energy storage unit is positioned towards a second side of the working machine with respect to the longitudinal axis, wherein the first and second sides are located opposite each other.