Oil-Water Separation Pack with Oblique Flow Ports

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Solution Overview

Problem

Existing oil-water separation technologies face inefficiencies in separating fine oil particles and sludge with specific gravities close to water, leading to reduced separation capacity and the need for frequent cleaning due to sludge accumulation, especially when the difference in specific gravity between oil and water is small.

Innovation Solution

An oil-water separation pack with an upper body having a narrowing cross-sectional shape and an oil rising region, coupled with a lower body featuring oblique flow-in ports that induce collisions and cohesions of oil particles, allowing stable separation of oil from water without disturbance and facilitating sludge removal by directing it downward.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the oil-water separation bath has a sufficient depth to prevent fine oil particles from passing to subsequent processing equipment, then the separation effectiveness is improved, but the size of the oil-water separation bath becomes excessively large

Engineering Contradiction:
Improveseparation effectivenessVSAvoidsize of oil-water separation bath
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The separation bath is divided into multiple chambers with corrugated plates creating numerous small separation zones. Instead of relying on a single deep bath, the invention segments the separation process into multiple stages across different chambers, achieving effective separation in a more compact overall volume.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention transitions from vertical depth-based separation to horizontal multi-chamber separation with corrugated plates. The corrugated plates create separation surfaces in multiple dimensions, allowing oil particles to cohere and separate as they traverse the complex path through the chambers, reducing the need for excessive bath depth.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If corrugated plates are used to promote oil particle cohesion and separation, then the oil separation capacity is improved, but sludge accumulates on the plates requiring periodic disassembly for cleaning

Engineering Contradiction:
Improveoil separation capacityVSAvoidmaintenance complexity
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The corrugated plates are designed as removable components that can be easily extracted from the separation bath chambers. This allows sludge accumulation on the plates to be addressed by simply removing and cleaning the plates externally, without requiring disassembly of the entire separation bath structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention introduces a dynamic maintenance approach where corrugated plates can be periodically removed and repositioned or cleaned in place. This dynamic element allows for easier maintenance while preserving the high separation capacity provided by the corrugated plate structure during normal operation.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If oval-shaped plates are used to allow sludge to gather and discharge naturally, then cleaning is simplified, but water and oil cannot flow and disperse uniformly and floating oil can be drifted away

Engineering Contradiction:
Improvecleaning easeVSAvoidseparation stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

Different regions of the separation system have different functions: corrugated plates in the separation chambers provide high surface area for oil-water separation, while the bottom of the bath has a sludge discharge region with different flow characteristics. This local differentiation allows sludge to accumulate and discharge naturally without compromising the separation stability in the main chambers.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The invention introduces a sludge discharge chamber as an intermediary region between the separation chambers and the external environment. This intermediary space allows sludge to gather and be discharged naturally while maintaining a clear separation between the separation function and the sludge management function, preventing disruption to the floating oil separation process.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If the specific gravity difference between oil and water is small, then the oil-water mixture is harder to separate, but increasing the separation bath depth to compensate makes the apparatus excessively large

Engineering Contradiction:
Improveseparation effectivenessVSAvoidseparation bath size
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The separation process is segmented into multiple chambers with corrugated plates, creating numerous small separation zones. This segmentation allows the system to achieve the equivalent separation effect of a deep bath through multiple shallow stages, reducing the overall volume while maintaining effectiveness for mixtures with small specific gravity differences.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention changes the separation parameters by introducing corrugated plates that create complex flow patterns and increase the effective separation surface area. This parameter change allows for efficient separation of fine oil particles with small specific gravity differences without requiring excessive bath depth, as the corrugated structure enhances particle cohesion and separation through increased interaction time and surface area.

Inventive Principle:
Principle #35Parameter changes

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

Enhances oil separation capacity by promoting the cohesion of fine oil particles into larger droplets, stabilizes oil floating separation, and effectively removes sludge without disrupting the flow, maintaining efficient separation performance.

Implementation Method 1

induce a non-laminar flow in the oil-water mixture and hence cohesions of oil particles

Methodology Applied
Scientific EffectCohesion: Cohesion

Implementation Method 2

separating oil from water by floating the oil... due to the difference in specific gravity between oil and water

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 3

causes significant changes in a flow direction of an oil-water mixture to induce a non-laminar flow in the oil-water mixture

Methodology Applied
Scientific EffectNon-laminar flow: Turbulence

Data Source

PatentUS7484627B2EIP pack for separating oil from water
Publication Date: 2009.02.03 DS21
  • US7484627B2 patent drawing
  • US7484627B2 patent drawing
  • US7484627B2 patent drawing

AI summary

An oil-water separation pack includes an upper body having cross-sectional shape narrowing from a bottom to a top. The upper body includes an oil rising region provided in an inside central portion thereof, and an oil-discharging opening provided in a top portion thereof. A lower body disposed beneath the upper body includes a plurality of oblique flow-in ports, which allow an oil-water mixture to flow obliquely into an inside portion thereof and flows of the oil-water mixture to collide with each other and stagnate in the inside portion of the lower body, thereby enabling the oil to float and be separated from water. A coupling unit integrally couples a bottom portion of the upper body with a top portion of the lower body, thereby forming a continuous space extending from the lower body to the upper body. The continuous space allows oil to float therethrough.