Methane Gas Purification with Ozone Generation and Adiabatic Compression
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Solution Overview
Problem
Existing systems face lower pollutant purification rates due to reduced ozone generation when using compressed air at elevated temperatures, which decreases the amount of ozone available for catalyst reaction.
Innovation Solution
A purification system that generates ozone from oxygen in the gas stream at lower temperatures and adiabatically compresses the gas to increase ozone generation, using a compressing section downstream of an ozone supply section, followed by a catalyst for methane purification under an ozone atmosphere.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air temperature is increased by compression to enhance catalyst reaction, then pollutant purification rate is improved, but ozone generation amount decreases
Solution Approach 1:
The system divides the process into two separate stages: first generating ozone from oxygen in the gas stream, then adiabatically compressing the gas to raise temperature for catalyst reaction. This segmentation allows ozone generation to occur at lower temperatures while still achieving high reaction temperatures during purification, resolving the contradiction between ozone generation amount and purification rate.
Solution Approach 2:
The system performs preliminary ozone generation from oxygen before the adiabatic compression and catalyst reaction stages. By generating ozone in advance at lower temperatures, the system ensures sufficient ozone is available when the gas is subsequently compressed and heated for high-rate pollutant purification.
2Productivity
If ozone is generated from compressed air at high temperature, then catalyst reaction efficiency is improved, but ozone generation efficiency decreases
Solution Approach 1:
The process is segmented into distinct functional stages: ozone generation from oxygen occurs separately from the compression and catalyst reaction stages. This allows each stage to operate under its optimal conditions - ozone generation at lower temperatures with higher efficiency, and catalyst reaction at elevated temperatures achieved through adiabatic compression.
Solution Approach 2:
The system changes the temperature parameter dynamically across different process stages. Ozone generation occurs at lower temperatures to maximize generation efficiency, while adiabatic compression subsequently raises the temperature to optimize catalyst reaction efficiency, achieving both goals sequentially rather than simultaneously.
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
Enhances methane purification rates by increasing ozone availability and temperature control, ensuring optimal reaction conditions for the catalyst, thereby improving pollutant removal efficiency.
Implementation Method 1
a supply section that is provided in a line where a gas containing methane and oxygen flows, and supplies ozone to the gas by generating the ozone from the oxygen contained in the gas
Implementation Method 2
a compressing section that is provided downstream of the supply section in the line, and adiabatically compresses the gas supplied with the ozone; and raises temperature of the gas by adiabatically compressing the gas
Implementation Method 3
a catalyst that is provided downstream of the compressing section in the line, and purifies the methane in the gas under an ozone atmosphere
Data Source
AI summary
A purification system has: a supply section that is provided in a line where a to-be-purified gas containing methane and oxygen flows, and supplies ozone to the to-be-purified gas by generating the ozone from the oxygen contained in the gas; a compressing section that is provided downstream of the supply section in the line, and adiabatically compresses the to-be-purified gas supplied with the ozone; and a catalyst that is provided downstream of the compressing section in the line, and purifies the methane in the to-be-purified gas under an ozone atmosphere, in which the compressing section raises temperature of the to-be-purified gas by adiabatically compressing the to-be-purified gas.