Cyclone Pretreatment Apparatus for Air Pollution Analysis
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Solution Overview
Problem
Existing air pollution monitoring devices face challenges in accurately measuring combustion gases due to the presence of moisture and particulate matters, which can lead to errors and complicate the removal process, especially when using Peltier traps that are limited in temperature control and complexity.
Innovation Solution
A preprocessing apparatus with a cyclone main body equipped with cooling and heating Peltier elements, temperature sensors, and a fiberglass insulation layer, which cools and heats the combustion gas to induce crystallization of moisture, allowing for effective removal of both moisture and particulate matters using the cyclone centrifugal force, thereby simplifying the configuration and improving maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is used to remove moisture and particulate matters, then moisture and particulate matters are removed, but gaseous pollutants are also removed along with them, leading to measurement errors
Solution Approach 1:
The invention changes the temperature parameter of the combustion gas to induce phase transition of moisture from vapor to liquid/crystal form. By cooling the gas to a specific temperature range, moisture condenses and can be separated through centrifugal force without affecting gaseous pollutants, thus resolving the contradiction between removing moisture and preserving gaseous pollutants
Solution Approach 2:
The invention utilizes phase transition of moisture from gaseous state to liquid or crystalline state through cooling. This phase change enables selective separation of moisture from the combustion gas using centrifugal force in the cyclone separator, while gaseous pollutants remain in gaseous state and pass through unaffected, solving the problem of simultaneous removal of desired and unwanted substances
2Device complexity
If a Peltier trap is provided only at one side of the preprocessing apparatus, then the apparatus structure is simplified, but temperature control becomes difficult and cooling speed is slow
Solution Approach 1:
The invention divides the cooling function into multiple segments by providing cooling Peltier elements at both sides of the preprocessing apparatus. This segmentation allows independent temperature control on each side, improving temperature regulation capability and cooling speed while maintaining relatively simple apparatus structure through modular design
Solution Approach 2:
The invention makes the Peltier elements serve multiple functions: they provide cooling when needed, and can be reversibly converted to heating function by reversing the current direction. This multi-functionality allows a single component to replace what would traditionally require separate heating and cooling devices, simplifying the overall apparatus structure while improving operational flexibility
3Ease of operation
If the combustion gas temperature is not adjusted to a predetermined range, then the apparatus operation is simpler, but moisture crystallization is incomplete and measurement accuracy decreases
Solution Approach 1:
The invention implements feedback control by using temperature sensors to monitor the combustion gas temperature and automatically adjusting the gas temperature through heating or cooling Peltier elements. The system compares the actual temperature with the predetermined range and makes real-time adjustments, ensuring complete moisture crystallization and accurate measurements while maintaining automated operation that simplifies user interaction
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 solution ensures reliable air pollutant measurement by effectively removing moisture and particulate matters, simplifies temperature control, and reduces apparatus complexity, achieving economic and reliable air pollution analysis.
Implementation Method 1
both sides of the inlet pipe (2) are provided with first cooling Peltier elements (21) for cooling the combustion gas
Implementation Method 2
cooling the combustion gas, and thus inducing crystallization of moisture contained in the combustion gas
Implementation Method 3
a heating Peltier element (31) for heating the combustion gas is provided at the other side of the inlet pipe (2)
Implementation Method 4
A preprocessing apparatus with a cyclone main body equipped with cooling and heating Peltier elements, which cools and heats the combustion gas to induce crystallization of moisture, allowing for effective removal of both moisture and particulate matters using the cyclone centrifugal force
Implementation Method 5
a fiberglass insulation layer, which cools and heats the combustion gas
Data Source
AI summary
The present invention relates to a preprocessing apparatus and a preprocessing method for measuring and analyzing air pollution, and provides the preprocessing apparatus and the preprocessing method, in which there is included a cyclone main body, a block made of aluminum or copper and provided at an outer circumferential edge of the cyclone main body, and a cooling means surrounding the block, such that contaminated gas introduced into the cyclone main body is cooled within a predetermined range, and as a result, it is possible to remove moisture contained in combustion gas by crystallizing the moisture, and to separate particulate matters from the combustion gas based on a cyclone principle.