Vertical Press Dewatering Biogenic Material
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Solution Overview
Problem
Existing methods for dewatering biomass and biogenic materials are inefficient in achieving high dry substance values quickly, especially for materials with initial moisture content above 50%, and often require complex systems and high energy consumption.
Innovation Solution
A vertical press with a press space open on both sides, equipped with a movable plunger and a liquid-permeable conveyor belt, allows for efficient dewatering by applying significant pressing forces and controlling the feed and pressure profile, enabling substantial dewatering from low initial dry substance values to above 60% in a short time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional pressing methods are used for dewatering biomass, then the system structure is simple, but the dewatering efficiency is low and processing time is long
Solution Approach 1:
The pressing system is divided into multiple pressing zones with different pressure levels along the conveying direction. The material undergoes progressive dewatering in stages, with each zone applying optimized pressure for its specific function, thereby increasing overall dewatering efficiency while maintaining reasonable processing time
Solution Approach 2:
The pressing system employs dynamically adjustable pressing forces and variable conveying speeds along different zones. The pressing intensity and material throughput are optimized in real-time based on moisture content and material properties, significantly improving dewatering productivity without excessive time loss
2Productivity
If high pressing forces are applied to achieve high dry substance values, then dewatering effectiveness improves, but energy consumption increases
Solution Approach 1:
The pressing system divides the dewatering process into multiple zones with progressively increasing pressure levels. Lower pressures are applied in early zones for initial dewatering, and higher pressures are applied only in later zones for final moisture removal, reducing total energy consumption compared to applying high pressure throughout
Solution Approach 2:
The system applies pressing forces selectively based on the dewatering stage and material characteristics. Not all zones require maximum pressing force, and the system adjusts pressure application to match the actual dewatering needs, avoiding excessive energy consumption while maintaining effectiveness
3Speed
If complex systems are used to achieve rapid dewatering, then processing speed improves, but system complexity increases
Solution Approach 1:
The system combines multiple functions into a single integrated pressing and conveying apparatus. The conveying mechanism simultaneously transports material through multiple pressing zones without requiring separate handling or transfer systems, achieving rapid dewatering while maintaining relatively simple system structure
Solution Approach 2:
The pressing system is designed to handle various types of biomass materials with different moisture contents using the same basic apparatus. The system's multi-zone pressing capability serves multiple dewatering stages and material types, reducing the need for specialized equipment for each application
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 vertical press system enables fast and efficient dewatering of large quantities of material, reducing processing time and energy consumption while allowing for continuous operation and effective liquid discharge, with the option to recycle press water, enhancing the thermal utilization of biogenic materials.
Implementation Method 1
the press plunger moves from above in the direction of the tool during pressing. During pressing of an aqueous mass of material located in the press space, liquid contained therein and pressed out during the pressing process can drain off through the openings of the tool
Implementation Method 2
conveying means for conveying the mass of material from a feed side into the press space and for conveying the pressed mass of material out of the press space. liquid contained therein and pressed out during the pressing process can drain off through the openings of the tool
Data Source
AI summary
--A device and method for dewatering a mass of material and a method and system for recycling a biogenic material. A vertical press has a press space formed between a tool provided with openings and a press plunger movable relative thereto. Conveying means convey the mass of material from a feed side toward an opposite discharge side. The press space is laterally confined by opposite side walls but is not confined in the direction of the feed side and the discharge side. A biogenic material is converted microbially and/or enzymatically into gas and fermentation residues in a fermentation plant and the latter are dewatered by means of a vertical press to such an extent that thermal utilization is made possible.--