Sludge Waste Deodorization With Heat Recovery for Faster Drying
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Solution Overview
Problem
Existing organic or sewage sludge waste disposing apparatuses face inefficiencies in energy use due to frequent operation of heating means, increased costs, and delayed treatment times when dealing with high-water content waste, along with inefficient reuse of high-temperature fluids and ventilation issues.
Innovation Solution
An apparatus equipped with a waste gas disposing device that removes bad-odour substances and collects heat from waste gases, utilizing a system of deodorizers and heat exchangers to recycle thermal energy, including agitators, deodorizers, and heat exchangers to enhance decomposition and drying processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If high-temperature fluid is discharged without reuse, then deodorization is achieved, but energy efficiency decreases and operating costs increase
Solution Approach 1:
The patent recovers thermal energy from high-temperature waste gas that would otherwise be discharged. A heat exchanger captures heat from the waste gas to preheat fresh air before it enters the agitation tank, thereby recovering energy that would have been wasted while still achieving deodorization through the two-stage deodorization process.
Solution Approach 2:
The patent converts the harmful hot waste gas into a useful resource by using its thermal energy to preheat fresh air through a heat exchanger. The waste gas, which would normally be discarded after deodorization, becomes a source of thermal energy that reduces the energy required for heating, thus converting a harmful factor into a beneficial one.
2Quantity of substance
If high-water content waste is input all at once, then treatment capacity increases, but ventilation is blocked and treatment time is delayed
Solution Approach 1:
The patent segments the waste input process by controlling the feeding rate to match the evaporation capacity of the system. Instead of inputting all waste at once, the system processes waste in a controlled manner that prevents water flooding, ensuring that ventilation channels remain open and treatment proceeds efficiently.
Solution Approach 2:
The system performs preliminary heating and evaporation before complete decomposition occurs. By pre-heating the waste and removing excess moisture through controlled evaporation, the system prevents water flooding that would block ventilation, thereby maintaining treatment speed while handling high-water content waste.
3Productivity
If heating means operates frequently to maintain temperature, then decomposition efficiency is maintained, but operating costs increase
Solution Approach 1:
The patent implements a feedback mechanism where the system monitors temperature and waste input conditions, and adjusts the heating operation accordingly. When waste is input and temperature drops, heating is activated; when temperature is maintained or waste input is low, heating is reduced or stopped, thereby optimizing energy consumption while maintaining decomposition efficiency.
Solution Approach 2:
The system uses the thermal energy from the waste gas itself to preheat fresh air through a heat exchanger, reducing the external heating energy required. This self-service approach allows the system to partially sustain its own thermal requirements, reducing operating costs while maintaining decomposition efficiency.
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 apparatus efficiently removes odors and recycles thermal energy, reducing energy costs and improving treatment efficiency by maintaining temperature and airflow, thus enhancing the decomposition and drying processes.
Implementation Method 1
a first deodorizer which is connected to one side of the agitator to biologically decompose and remove bad-odour substances from a waste gas generated during an agitating process of the organic or sewage sludge waste
Implementation Method 2
a second deodorizer operable to receive the waste gas from the first deodorizer and heat and remove bad-odour substances contained in the waste gas
Implementation Method 3
a heat exchanger operable to heat the waste gas flowing into the second deodorizer with heat from the waste gas heated by and discharged from the second deodorizer
Implementation Method 4
an agitator which is connected to the storage tank to decompose and dry the organic or sewage sludge waste supplied from the storage tank
Data Source
AI summary
An apparatus for disposing of organic or sewage sludge waste includes: a storage tank configured to collect and accommodate organic or sewage sludge waste; an agitator which is connected to the storage tank to decompose and dry the organic or sewage sludge waste supplied from the storage tank; a first deodorizer which is connected to one side of the agitator to biologically decompose and remove bad-odour substances from a waste gas generated during an agitating process of the organic or sewage sludge waste; a second deodorizer which heats and removes bad-odour substances contained in the waste gas from which the bad-odour substances have been partially removed by the first deodorizer; and a heat exchanger which heats the waste gas, which flows in the second deodorizer, through heat of the waste gas discharged from the second deodorizer.