Hydrocyclone Ceramic Membrane Integration for Compact Separation
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Solution Overview
Problem
Existing separation technologies for multi-phase compositions, such as produced water, face challenges including bio-fouling, large space requirements, and inefficiencies in removing solid particles, particularly in underwater drilling operations, where existing systems are impractical due to size constraints and limited effectiveness in handling a range of oil droplet sizes.
Innovation Solution
The integration of ceramic membranes with hydrocyclones within a compact separator casing, where the ceramic membranes are either downstream of the hydrocyclone or integrated into its tapered section, enables efficient separation of aqueous, oleaginous, and solid phases into distinct streams with reduced bio-fouling and a smaller footprint, utilizing cyclonic flow to separate phases and ceramic membranes to filter out solids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If membrane separation or filtration processes are used to separate solid particles from multi-phase compositions, then separation efficiency is improved, but membranes and filters are susceptible to bio-fouling from oleaginous constituents and organic compounds
Solution Approach 1:
The separation system is divided into two distinct functional segments: a hydrocyclone for bulk separation of oil droplets and a membrane filter for fine particle removal. This segmentation allows each component to perform its specialized function optimally while the hydrocyclone pre-treatment reduces the bio-fouling burden on the membrane
Solution Approach 2:
The hydrocyclone performs preliminary separation of oil droplets and organic compounds from the multi-phase composition before the stream reaches the membrane filter. This preliminary action removes the substances that would cause bio-fouling, thereby protecting the membrane and extending its operational life
2Reliability
If hydrocyclones are used to remove oil droplets and organic compounds, then bio-fouling is reduced, but they are ineffective at efficiently removing solid particles
Solution Approach 1:
The system segments the separation tasks by assigning the hydrocyclone to handle oil droplet removal and the membrane filter to handle solid particle removal. This division of labor allows each component to excel at its designated function without compromising overall performance
3Measurement precision
If multiple separation units are combined in series or parallel to achieve comprehensive separation, then separation effectiveness is improved, but space requirements become substantial
Solution Approach 1:
The hydrocyclone and membrane filter are merged into a single integrated separator unit where the hydrocyclone outlet directly connects to the membrane filter inlet within the same housing. This combination achieves comprehensive separation of both oil droplets and solid particles while occupying minimal space compared to separate units
4Productivity
If conventional separation equipment is used in underwater drilling operations, then separation can be performed, but the equipment size is impractical for limited physical space on drilling platforms
Solution Approach 1:
Multiple separation functions (hydrocyclonic separation and membrane filtration) are merged into a single compact separator unit, reducing the equipment footprint to a size practical for underwater drilling platforms while maintaining full separation capability for both oil droplets and solid particles
Solution Approach 2:
The membrane filter is nested within the hydrocyclone structure, with the membrane positioned to receive flow from the hydrocyclone outlet. This nested arrangement maximizes space utilization and minimizes the overall footprint of the separation system
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 configuration effectively separates multi-phase compositions into lesser-density, medium-density, and greater-density fluids, meeting water quality standards for reuse in hydrocarbon drilling and refining, while minimizing bio-fouling and space requirements, thus enhancing operational efficiency and adaptability in limited spaces.
Implementation Method 1
hydrocyclones and the ceramic membranes are disposed within the separator casing. The separator having one or more ceramic membranes integrated with a hydrocyclone may be operable to separate a multi-phase composition into at least a lesser-density fluid, a medium-density fluid, and a greater-density fluid
Implementation Method 2
centrifugal separation, hydrocyclonic separation
Implementation Method 3
Membrane separation or filtration processes may provide for efficient separation of solid particles from multi-phase compositions
Data Source
AI summary
Separators for separating a multi-phase composition include a separator casing defining a chamber and a permeate outlet, at least one hydrocyclone within the separator casing, and at least one ceramic membrane. Each hydrocyclone includes a hydrocyclone inlet, a tapered section downstream of the hydrocyclone inlet, an accepted outlet, and a reject outlet. The ceramic membrane may be disposed within the separator casing and downstream of the accepted outlet of the hydrocyclone or may be disposed within at least a portion of the tapered section of the hydrocyclone. The ceramic membrane includes a retentate side and a permeate side, where the permeate side is in fluid communication with the chamber. Systems and methods for separating a multi-phase composition into a lesser-density fluid, a greater-density fluid, and a medium-density fluid using the separators are also disclosed.