Parallel Methanol Separation Unit for Flow Rate Adaptability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The separation of methanol from an outlet stream in methanol synthesis reactors is challenging due to fluctuations in the flow rate caused by renewable energy-powered hydrogen supply, leading to decreased separation performance and risk of liquid droplets passing through separators, potentially damaging downstream compressors.
Innovation Solution
A method utilizing a separation unit with multiple separation devices connected in parallel, where the outlet stream is distributed based on the volume flow rate, allowing the entire stream to pass through one device or be divided among several, ensuring consistent flow velocities and capacities across devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single separator is used for methanol separation, then the device complexity is low, but the separation efficiency decreases when outlet flow rate fluctuates outside the defined range
Solution Approach 1:
The patent divides a single separator into multiple separation devices connected in parallel. Each separation device can handle a specific portion of the outlet stream, allowing the system to maintain optimal flow velocities across devices even when total outlet flow fluctuates. This segmentation enables the system to adapt to varying flow rates without compromising separation efficiency.
Solution Approach 2:
The patent introduces a flow distribution mechanism that dynamically adjusts the distribution of outlet stream among multiple separation devices based on the total outlet flow rate. This dynamic adjustment ensures that each separation device operates within its optimal flow range, maintaining high separation efficiency across fluctuating operating conditions.
2Productivity
If the outlet flow rate increases beyond the defined range, then the productivity increases, but liquid droplets may pass through the separator damaging downstream equipment
Solution Approach 1:
By segmenting the separation function across multiple parallel devices, the system can handle higher total outlet flow rates while maintaining safe flow velocities in each individual device. The distributed architecture prevents liquid droplet formation and passage even at elevated productivity levels.
Solution Approach 2:
The flow distribution mechanism acts as an intermediary that regulates and distributes the outlet stream among multiple separation devices. This intermediary control ensures that each device receives an appropriate portion of the flow, preventing liquid droplet damage while maintaining high overall productivity.
3Productivity
If the outlet flow rate decreases below the defined range, then the productivity decreases, but the separation efficiency also decreases
Solution Approach 1:
The parallel configuration of multiple separation devices allows the system to maintain optimal flow velocities in each device even when total outlet flow is low. By distributing the reduced flow across multiple devices rather than forcing it through a single device, the system maintains separation efficiency while operating at reduced productivity levels.
4Adaptability or versatility
If multiple separation devices are used in parallel, then the adaptability to fluctuating flow rates improves, but the device complexity increases
Solution Approach 1:
The patent implements adaptability through segmentation by using multiple identical separation devices in parallel. This modular approach provides flow rate adaptability while keeping individual device complexity low. The standardized parallel configuration simplifies the overall system compared to a single complex adaptive separator.
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 approach ensures reliable methanol separation across varying flow rates, maintaining efficient separation performance and preventing damage to downstream equipment by adjusting the distribution of the outlet stream among multiple separation devices in response to fluctuations in the volume flow rate.
Implementation Method 1
The pre-separator and the main separator are preferably sequentially flowed vertically from bottom to top, so that separated condensate flows downwards by gravity
Data Source
Figure 1~2b
Figure 3~4
Figure 5a~5b
AI summary
A process for the synthesis of methanol using a synthesis reactor arrangement (1), wherein methanol produced with the synthesis reactor arrangement (1) is separated from an outlet stream of the synthesis reactor arrangement (1) by a separation unit (2), wherein the separation unit (2) has several separation devices (3.1 to 3.5) connected in parallel in terms of flow technology, wherein the outlet stream is divided among the separation devices (3.1 to 3.5) such that the entire outlet stream is passed through one of the separation devices (3.1 to 3.5) or a portion of the outlet stream is passed through several of the separation devices (3.1 to 3.5), and wherein the distribution of the outlet stream among the separation devices (3.1 to 3.5) is set depending on a volumetric flow rate of the outlet stream.