Gas Purification Device Dynamic Temperature Control
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Solution Overview
Problem
Existing gas purification devices struggle to adjust the reaction rate of hydrolysis reactions for carbonyl sulfide (COS) and hydrogen cyanide (HCN) in response to changes in their concentrations, as the temperature of the syngas cannot be optimized for individual components within the current configuration.
Innovation Solution
A gas purification device comprising a converter packed with a catalyst for hydrolyzing COS and HCN, an upstream heat exchanger for cooling, a temperature estimation member to detect the reaction temperature, and a flow-rate adjustment member to control the cooling fluid flow, allowing for adjustment of the reaction temperature based on concentration changes of COS and HCN.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the syngas temperature is adjusted to a common optimum range (280-320°C) for both COS and HCN hydrolysis, then both reactions can proceed at acceptable rates, but the reaction rate of individual components cannot be optimized when their concentrations change
Solution Approach 1:
The patent introduces a dynamic temperature control system that adjusts the syngas temperature before it enters the converter based on the detected concentrations of COS and HCN. The temperature estimation member continuously monitors the reaction temperature, and this information is used to dynamically adjust the cooling fluid flow rate in the heat exchanger, enabling the system to adapt to changing component concentrations and optimize reaction rates accordingly.
Solution Approach 2:
The patent changes the temperature parameter of the syngas based on the concentrations of COS and HCN. By adjusting the temperature to different optimal ranges (240-320°C for COS, 280-350°C for HCN), the system optimizes the hydrolysis reaction rates for each component. This is achieved by modifying the cooling fluid flow rate in the heat exchanger to achieve the desired temperature adjustment.
2Manufacturing precision
If the syngas temperature is lowered to optimize COS hydrolysis (240-320°C), then COS conversion efficiency improves, but HCN hydrolysis rate decreases due to suboptimal temperature (requires 280-350°C)
Solution Approach 1:
The system dynamically adjusts the syngas temperature based on real-time detection of COS and HCN concentrations. When COS concentration is high, the temperature is optimized for COS hydrolysis (240-320°C). When HCN concentration increases, the temperature is adjusted to the optimal range for HCN hydrolysis (280-350°C). This dynamic adjustment allows the system to prioritize hydrolysis of the component with higher concentration or greater removal requirement.
Solution Approach 2:
The patent changes the temperature parameter according to the specific hydrolysis requirements of different components. By adjusting the cooling fluid flow rate, the system can set the syngas temperature to different optimal ranges to maximize either COS or HCN hydrolysis efficiency based on operational needs and concentration levels.
3Manufacturing precision
If the syngas temperature is raised to optimize HCN hydrolysis (280-350°C), then HCN conversion efficiency improves, but COS hydrolysis rate decreases due to excessive temperature (optimum is 240-320°C)
Solution Approach 1:
The system uses dynamic temperature control to adjust the syngas temperature based on detected concentrations of COS and HCN. When HCN concentration is high or preferential removal is required, the temperature is raised to the optimal HCN hydrolysis range (280-350°C). When COS concentration is high, the temperature is lowered to the optimal COS hydrolysis range (240-320°C). This allows flexible optimization of either component's hydrolysis rate.
4Productivity
If a fixed temperature control system is used without concentration sensing, then the device structure remains simple, but the reaction rate cannot be adjusted in response to concentration changes of COS and HCN
Solution Approach 1:
The patent implements a feedback control system where the temperature estimation member continuously monitors the reaction temperature inside the converter, and this information is fed back to the flow-rate adjustment member. The flow-rate adjustment member uses this feedback to adjust the cooling fluid flow rate in the heat exchanger, thereby controlling the syngas temperature and optimizing the hydrolysis reaction rates based on actual operating conditions and component concentrations.
Solution Approach 2:
The patent replaces fixed mechanical temperature control with a sensor-based detection and control system. The temperature estimation member (sensor) detects the reaction temperature and concentration information, which is then used to control the cooling fluid flow rate, replacing simple fixed-temperature mechanical control with an intelligent detection-control system that can adapt to changing conditions.
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
This configuration enables precise control of the reaction rate for each component by adjusting the reaction temperature in response to concentration changes, optimizing the hydrolysis of COS and HCN within the gas purification device.
Implementation Method 1
an upstream heat exchanger for heat exchange between a gas to be introduced into the converter and a cooling fluid for cooling the gas
Implementation Method 2
a converter packed with a catalyst for hydrolyzing both COS and HCN
Implementation Method 3
a converter packed with a catalyst for hydrolyzing both COS and HCN
Data Source
AI summary
A gas purification device includes: a converter packed with a catalyst for hydrolyzing both carbonyl sulfide and hydrogen cyanide; an upstream heat exchanger for heat exchange between a gas to be introduced into the converter and a cooling fluid for cooling the gas; a reaction-temperature estimation member for estimating a reaction temperature inside the converter; and a flow-rate adjustment member for adjusting a flow rate of the cooling fluid flowing into the upstream heat exchanger based on an estimated value of the reaction-temperature estimation member to control the reaction temperature.