Liquid Sulfur Degassing Level Control via External Bridle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Control of the liquid sulfur level in degassing vessels during liquid sulfur degassing is challenging due to froth formation caused by the stripping gas, which affects accurate liquid level measurements and control.
Innovation Solution
A liquid sulfur degassing system that includes a degassing vessel and a liquid level controller, which determines and controls the liquid sulfur level by using a level bridle connected to the degassing vessel, allowing for accurate control regardless of froth presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stripping gas is used to remove impurities from liquid sulfur, then degassing efficiency is improved, but froth formation occurs which interferes with liquid level measurement
Solution Approach 1:
The system divides the measurement function from the vessel interior to an external level bridle. The bridle is a separate component that measures liquid level outside the main vessel, segmenting the measurement system from the froth-prone environment inside the degassing vessel.
Solution Approach 2:
The level bridle acts as an intermediary device between the liquid sulfur in the vessel and the measurement system. It provides an indirect measurement path that is not directly affected by froth formation in the contact zone, allowing accurate level detection without being contaminated by the measurement interference.
2Stability of the object's composition
If liquid level control is implemented in degassing vessel, then process stability is improved, but measurement accuracy deteriorates due to froth interference
Solution Approach 1:
The control system uses an externally connected level bridle that segments the measurement function from the vessel interior. This allows stable liquid level control to be maintained while the measurement is performed in a location not subject to froth interference.
Solution Approach 2:
The level bridle serves as an intermediary measurement path that provides accurate liquid level data to the control system without being affected by froth formation. This enables reliable feedback control of liquid sulfur level despite the challenging measurement environment inside the vessel.
3Device complexity
If direct liquid level measurement in degassing vessel is used, then device complexity is reduced, but measurement reliability deteriorates due to froth presence
Solution Approach 1:
The level bridle is a relatively simple intermediary component that connects to the vessel and provides reliable indirect measurement. While it adds a component, the overall system remains simple compared to complex froth detection or suppression systems, while dramatically improving measurement reliability.
Solution Approach 2:
The system replaces direct mechanical measurement inside the vessel with an indirect mechanical measurement through the level bridle. This substitution eliminates the reliability issue of direct measurement while maintaining a simple mechanical system architecture.
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 effectively controls the liquid sulfur level in the degassing vessel, ensuring consistent and efficient degassing operations even when froth is present, thereby improving the overall process reliability and efficiency.
Implementation Method 1
contacting liquid sulfur with a stripping gas to remove impurities that are contained in the liquid sulfur. The impurities can transfer to the stripping gas
Implementation Method 2
a level bridle fluidly connected to the degassing vessel... measure a first level of the liquid sulfur in the level bridle... indicating a second liquid level of the liquid sulfur in the degassing vessel
Data Source
AI summary
A method and system for liquid sulfur degassing is disclosed. The method and system generally involve degassing liquid sulfur in a degassing vessel, and the level of the liquid sulfur in the degassing vessel is controlled in the degassing vessel by determining the level of liquid sulfur in the degassing vessel.