Fermentation Dryer Feed for Stable Waste Incineration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing waste incineration facilities struggle with uneven moisture content in waste, leading to inefficient combustion, temperature instability, and increased use of auxiliary fuel due to reliance on operator intuition and lack of moisture measurement during agitation.
Innovation Solution
A waste incineration facility with a fermentation dryer that reduces moisture content under controlled pressure, followed by a storage hopper, where waste is fermented and dried before incineration, using conveyors for automated handling and a steam recovery system to heat the dryer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If waste is agitated by crane based on operator intuition and accumulation history, then the waste can be mixed and redistributed, but the moisture content remains uneven and cannot be quantified or controlled
Solution Approach 1:
The patent replaces the mechanical crane-based agitation system with a fermentation dryer that uses thermal and biological processes. The dryer heats waste to controlled temperatures (60-80°C) to promote uniform fermentation and moisture evaporation, eliminating the need for mechanical mixing while achieving homogeneous moisture distribution through thermal processing.
Solution Approach 2:
The patent changes the operational parameters from manual agitation to controlled thermal processing. By controlling temperature (60-80°C), humidity, and fermentation time, the system achieves uniform moisture content without relying on operator intuition. The fermentation dryer maintains specific parameter ranges to ensure consistent drying and fermentation outcomes.
2Productivity
If waste with large moisture content is incinerated directly, then the incineration process can proceed without pre-treatment, but heat is lost to evaporation and temperature unevenness occurs reducing combustion stability
Solution Approach 1:
The patent applies preliminary fermentation and drying treatment to waste before incineration. The fermentation dryer reduces moisture content and pre-processes the waste at controlled temperatures, so that when waste enters the incinerator, it already has optimized moisture content for efficient combustion. This preliminary action prevents heat loss during incineration and improves combustion stability.
Solution Approach 2:
The patent utilizes phase transition of water from liquid to vapor during the fermentation drying process. By controlling the fermentation dryer to heat waste to 60-80°C, moisture evaporates in a controlled manner, concentrating organic matter and preparing waste for efficient incineration. This controlled phase transition removes excess moisture before the high-temperature incineration process.
3Reliability
If a fermentation dryer is added to the waste treatment process, then moisture content can be uniformly reduced and combustion stability improved, but the device complexity and process steps increase
Solution Approach 1:
The fermentation dryer performs multiple functions simultaneously: it dries waste to reduce moisture content, ferments organic matter to stabilize composition, heats waste to optimal temperature range, and prepares waste for incineration. This multi-functionality achieves reliable combustion stability while avoiding the need for separate treatment stages for each function.
Solution Approach 2:
The fermentation dryer utilizes self-heating through controlled fermentation processes. Microbial activity generates heat that contributes to the drying process, reducing the external energy input required. The system maintains temperature within 60-80°C range through controlled fermentation, making the process more efficient and less complex than externally heated drying systems.
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
Stable and efficient incineration is achieved with uniform moisture content, reducing auxiliary fuel use and improving working conditions by automating the process and utilizing exhaust heat for drying.
Implementation Method 1
a fermentation dryer configured to ferment and dry the waste while heating the waste to a predetermined temperature range under reduced pressure
Implementation Method 2
a fermentation dryer configured to ferment and dry the waste while heating the waste to a predetermined temperature range under reduced pressure
Implementation Method 3
the steam generated in the boiler is supplied to the fermentation dryer through a steam supply path
Data Source
AI summary
The waste incineration facility includes a waste pit for receiving waste and an incinerator for incinerating the waste stored in the waste pit. The waste incineration facility further includes: a fermentation dryer configured to ferment and dry the waste while heating the waste to a predetermined temperature range under reduced pressure; and a storage hopper configured to store a fermented dried product produced in the fermentation dryer. The fermented dried product stored in the storage hopper is charged into the incinerator to incinerate the fermented dried product. The waste incineration facility further includes: a first conveyor connecting the waste pit and the fermentation dryer; and a second conveyor connecting the fermentation dryer and the storage hopper. The first conveyor and the second conveyor are driven to continuously perform production of the fermented dried product from the waste in the waste pit and storage of the fermented dried product in the storage hopper.