Solid-Liquid Separation Device for Washing Lignocellulosic Residue
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Solution Overview
Problem
Current methods for washing and solid-liquid separation of lignocellulosic solid residues are complex and costly, involving multiple steps and high expenses, which hinders efficient enzymolysis and fermentation processes.
Innovation Solution
A solid-liquid separation device comprising a kettle body, piston, stirrer, separation plate with filtration pores, and filtration mesh, allowing for repetitive washing and material transportation with a simplified process, including a washing chamber and draining chamber configuration, and controlled liquid and water inlets and outlets, enables efficient separation and washing of lignocellulosic solid residues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-screw extrusion is adopted for washing and solid-liquid separation, then washing and separation can be achieved, but the process becomes complex and costly
Solution Approach 1:
The patent combines washing, solid-liquid separation, and material transportation functions into a single integrated device. The kettle body houses both the washing chamber with piston for washing/separation and the material outlet for transportation, eliminating the need for multiple separate equipment units and process steps.
Solution Approach 2:
The single device performs multiple functions: the washing chamber with movable piston enables washing and solid-liquid separation, while the integrated material outlet system handles material transportation. This multi-functional design replaces the multi-screw extrusion system with a more simplified configuration.
2Productivity
If multi-screw extrusion is used for material transportation, then material can be conveyed, but the cost increases
Solution Approach 1:
Material transportation function is merged into the same kettle body that performs washing and separation. The material outlet is positioned at the bottom of the washing chamber, allowing gravity-assisted discharge of washed material without requiring separate extrusion equipment.
Solution Approach 2:
The complex multi-screw extrusion mechanism is extracted and replaced with a simpler material outlet system. The piston's reciprocating motion naturally facilitates material discharge through the material outlet, eliminating the need for expensive extrusion equipment while maintaining transportation capability.
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 device simplifies the process route, reduces production costs, and effectively connects pretreatment and enzymatic hydrolysis processes, facilitating the conversion of lignocellulose into high-value biochemical products.
Implementation Method 1
a separation plate having filtration pores, and a filtration mesh... A liquid contained in the slurry flows into the draining chamber through the filtration mesh and the filtration pores
Implementation Method 2
The stirrer is switched on to break up the solid residue, and then it is switched off
Implementation Method 3
The kettle body is placed with a slope angle ≤5° to make the liquid outlet positioned at a lowest point
Data Source
AI summary
A solid-liquid separation device includes a kettle body, a piston, a stirrer, a separation plate having filtration pores, and a filtration mesh. The kettle body is hollow along an axial direction to form a chamber body. The separation plate is fitly installed in the chamber body, and divides the chamber body into a washing chamber and a draining chamber. The piston and the stirrer are fitly disposed in the washing chamber. The filtration mesh is attached on a side of the separation plate to cover the filtration pores. The kettle body is further provided with a feed inlet, a water inlet, a material outlet, and a liquid outlet. The feed inlet and material outlet are communicated with the washing chamber, and the water inlet and the liquid outlet are communicated with the draining chamber. The method includes the following steps: feeding, solid-liquid separation, washing, and material discharge.