Multi-Quill Chemical Injection Mixing for Uniform Pipeline Treatment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional single-quill injection systems in the oil and gas industry face issues with injection quill deterioration during shutdown or upset conditions, leading to inefficiencies and pipeline integrity concerns due to continuous corrosive chemical injection without bulk fluid flow, and require a static mixer for effective chemical distribution.
Innovation Solution
A chemical injection and mixing system featuring multiple injection quills with check valves and a control unit for precise chemical distribution and mixing within the pipeline, eliminating the need for a separate static mixer by using a radial configuration of injection quills and a control unit to regulate chemical flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single injection quill is used for chemical injection, then the device complexity is reduced, but the chemical distribution uniformity deteriorates
Solution Approach 1:
The single injection quill is segmented into multiple injection quills (first, second, third, and fourth injection quills) positioned at different locations around the pipeline. Each quill independently injects chemical into the fluid flow, achieving uniform chemical distribution without requiring a complex static mixer assembly.
2Ease of operation
If continuous chemical injection is maintained during shutdown conditions, then the injection system remains simple to operate, but the injection quill deterioration accelerates
Solution Approach 1:
The injection system incorporates dynamic control through a control unit that receives signals from a flow sensor. During shutdown conditions when fluid flow stops, the control unit automatically closes the control valve to prevent continuous chemical injection, thereby protecting the injection quills from deterioration while maintaining operational simplicity during normal flow conditions.
3Stability of the object's composition
If a static mixer is added downstream of the injection quill, then the chemical mixing effectiveness is improved, but the device complexity and space requirement increase
Solution Approach 1:
The injection and mixing functions are merged into a single integrated system. Multiple injection quills are strategically positioned around the pipeline to inject chemical directly into the fluid flow, utilizing the existing fluid dynamics for automatic mixing. This eliminates the need for a separate static mixer component, reducing device complexity while maintaining effective chemical distribution.
4Stability of the object's composition
If multiple injection quills are positioned at different locations, then the chemical distribution uniformity is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple injection quills with identical structures and functions are used throughout the system. Each quill serves the same purpose of injecting chemical into the fluid flow, allowing for standardized manufacturing and assembly. The control valve and flow sensor provide universal control over all injection quills, simplifying the overall manufacturing process despite the increased number of injection points.
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 ensures uniform chemical distribution and mixing within the pipeline fluid flow, enhancing pipeline integrity and treatment efficiency by preventing backflow and controlling chemical concentration, thus reducing the risk of quill deterioration and eliminating the need for a static mixer.
Implementation Method 1
Each of the plurality of injection quills may independently include a quill check valve
Data Source
AI summary
A combined chemical injection and mixing system including an injection stream pipe, a target pipe disposed within the injection stream pipe, and a plurality of injection quills is described. The injection stream pipe encloses the plurality of injection quills, and the plurality of injection quills each independently includes a quill check valve and a quill flange. A method for mixing at least one chemical in a pipeline is also described. The method includes providing a chemical injection and mixing system configured to a pipeline, forming a pipeline treatment system, providing a fluid flow in the pipeline treatment system, injecting at least one chemical via the plurality of injection quills, and mixing the at least one injected chemical in a mixing zone of the chemical injection and mixing system, thereby mixing the at least one injected chemical in the fluid flow.