Feed Gas Reforming System with Feedback Control
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Solution Overview
Problem
Existing hydrogen reforming systems for producing hydrogen gas from natural gas are manually controlled and lack the ability to adjust the hydrogen gas flow rate based on consumer demand, potentially leading to inefficient CO2 generation and operational instability.
Innovation Solution
A feed gas reforming system with a control unit that automatically adjusts the supply of feed gas, supply water, and hydrogen gas production based on measured flow rates and pressures, using sensors and controllers to maintain uniform flow rates and pressures, thereby enabling flexible operation according to demand and minimizing CO2 generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual control is used to operate the reforming system, then operational simplicity is maintained, but the system cannot automatically adjust hydrogen gas flow rate based on consumer demand, leading to operational instability and inefficient CO2 generation
Solution Approach 1:
The patent implements a feedback control system where sensors continuously monitor the flow rate of hydrogen gas discharged from the PSA unit and feed this information back to the control unit. The control unit automatically adjusts the feed gas supply unit and supply water supply unit based on this feedback to maintain the desired hydrogen gas flow rate, enabling the system to adapt to varying consumer demand without manual intervention.
Solution Approach 2:
The control system is designed to automatically regulate its own operation without requiring continuous manual adjustment. The control unit autonomously manages the feed gas supply, supply water supply, and hydrogen gas discharge based on sensor inputs and pre-set parameters, allowing the system to self-adjust and maintain optimal performance according to real-time demand conditions.
2Productivity
If the reforming system operates without automatic control, then device complexity is reduced, but CO2 generation becomes inefficient and operational stability deteriorates
Solution Approach 1:
The feedback control mechanism monitors hydrogen gas flow rate and provides real-time data to the control unit, which adjusts operational parameters to optimize hydrogen production efficiency and minimize CO2 generation. This continuous monitoring and adjustment cycle ensures the system operates at peak efficiency while adapting to demand variations.
Solution Approach 2:
The control unit dynamically changes operational parameters such as feed gas flow rate, supply water flow rate, and reforming temperature based on hydrogen demand and sensor feedback. By adjusting these parameters in real-time, the system optimizes hydrogen production efficiency and CO2 management without requiring complex structural modifications.
3Reliability
If manual operation is used, then the control system remains simple, but the system lacks the ability to respond to frequent disturbances in feed gas composition, reducing reliability
Solution Approach 1:
The feedback control system continuously monitors not only hydrogen gas flow rate but also feed gas composition and reforming process parameters. When disturbances in feed gas composition are detected, the control unit automatically adjusts operational parameters to maintain stable hydrogen gas production, ensuring reliability without requiring manual intervention for each disturbance.
Solution Approach 2:
The control system autonomously detects and responds to disturbances in feed gas composition by self-adjusting the reforming process parameters. This self-service capability allows the system to maintain reliable hydrogen gas production under varying feed gas conditions without requiring external manual control or complex additional equipment.
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 system allows for automated and flexible operation of the hydrogen reforming process, ensuring stable hydrogen gas production even with frequent disturbances in feed gas composition, reducing manual intervention and CO2 generation.
Implementation Method 1
a reformer configured to receive feed gas and supply water and to produce and discharge mixed gas including hydrogen
Implementation Method 2
a pressure swing absorber (PSA) configured to receive the mixed gas from the reformer and to refine and discharge hydrogen gas
Data Source
AI summary
A feed gas reforming system is provided. The system includes a reformer configured to receive feed gas and supply water and to produce and discharge mixed gas including hydrogen, a pressure swing absorber (PSA) configured to receive the mixed gas and to refine and discharge hydrogen gas, a feed gas supply unit configured to control the supply amount of feed gas, a supply water supply unit configured to control the supply amount of supply water, a hydrogen gas supply unit configured to control the amount of hydrogen gas, and a control unit configured to control the flow rate of hydrogen gas, to control the feed gas supply unit based on the pressure of the discharged hydrogen gas, and to control the supply water supply unit based on the flow rate of feed gas.