Real-Time Additive Injection Control for H2S Fuel Treatment
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Solution Overview
Problem
Current methods for treating crude oil and fuels with chemical additives, such as monoethanolamine (MEA) and monomethylamine (MMA) triazine, to scavenge hydrogen sulfide (H2S), involve excessive additive usage due to batch processing, leading to inefficiency and high costs.
Innovation Solution
A real-time fuel additive processing system that includes a fuel additive storage tank, injection nozzle, liquid conduit, pump, flow rate transmitter, chemical analyzer, and flow rate controller, allowing for continuous monitoring and adjustment of additive flow rates based on real-time flow rates and chemical concentrations within the fuel transport line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If batch type treatment with chemical additive is used to scavenge H2S from crude oil, then all H2S is processed, but 40% overage of chemical additive is added which is inefficient and costly
Solution Approach 1:
The system employs a chemical analyzer to continuously monitor H2S levels in the crude oil and provides real-time feedback to a flow rate controller. This closed-loop feedback mechanism allows the system to adjust the chemical additive injection rate dynamically, ensuring that the precise amount of additive is added to scavenge H2S without the 40% overage required by batch treatment methods.
Solution Approach 2:
The invention replaces the manual batch-type mechanical mixing process with an automated electronic control system. The flow rate controller electronically regulates the chemical additive injection based on real-time H2S measurements, substituting the粗放 mechanical batch addition approach with precision electronic control and continuous monitoring.
2Reliability
If vast overage of chemical additive is added to ensure all H2S is processed, then H2S scavenging is reliable, but processing cost and inefficiency increase significantly
Solution Approach 1:
The chemical analyzer continuously monitors H2S concentrations and provides real-time feedback to the flow rate controller, enabling dynamic adjustment of additive injection rates. This ensures complete H2S scavenging while optimizing additive usage, thereby improving processing efficiency by eliminating the need for excessive additive overage.
Solution Approach 2:
The system is self-regulating through the closed-loop control mechanism. The chemical analyzer automatically detects H2S levels and the flow rate controller autonomously adjusts the additive injection rate accordingly, eliminating the need for manual intervention and optimizing the scavenging process in real-time without requiring excessive chemical additive.
3Ease of operation
If chemical additive is added during storage tank transfer, then volumetric mixing occurs which distributes additive throughout crude oil, but 40% more additive is required to ensure complete H2S processing
Solution Approach 1:
The system uses real-time H2S monitoring with a chemical analyzer that provides continuous feedback to the flow rate controller. This allows precise control of additive injection during the transfer process, ensuring adequate distribution throughout the crude oil without requiring the 40% overage that characterizes batch treatment methods.
Solution Approach 2:
The invention implements continuous injection of chemical additive during the crude oil transfer process, rather than batch addition. This continuous action ensures steady distribution of the additive throughout the flowing crude oil, maintaining effective H2S scavenging with optimized additive usage and eliminating the need for excessive overage.
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 system reduces the overabundance of additive chemicals from 40% to 10-15%, enhancing efficiency and significantly lowering costs by ensuring precise additive application during fuel transport, thereby improving the treatment process.
Implementation Method 1
a chemical analyzer coupled to the fuel transport line for sensing the quantity of a target chemical within the fuel flowing through the fuel transport line
Implementation Method 2
a liquid pump coupled to the fuel additive liquid conduit
Implementation Method 3
a fuel additive injection nozzle in fluid communication with the fuel transport line
Implementation Method 4
an additive chemical or chemical additive may be added to the crude oil to scavenge the H2S and render it harmless
Data Source
AI summary
A real time additive processing system for crude oil or refined fuel products is coupled to a fuel transport line that transfers fuel from one storage tank to another storage tank. The fuel additive processing system includes a fuel additive storage tank coupled to a liquid conduit having a liquid pump with a speed/stroke controller that regulates the liquid pump. The liquid conduit is coupled to the fuel transport line at a fuel additive injection nozzle. The fuel additive processing system also includes a flow rate transmitter and a chemical or physical property analyzer coupled to the fuel transport line downstream of the additive injection nozzle. The fuel additive processing system includes a flow controller that communicates with the liquid pump speed/stroke controller, flow rate transmitter and chemical or physical property analyzer. A remote system allows selective control of the flow controller.