Reagent Injector with Conical Dispersion Member for Water Treatment

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Solution Overview

Problem

Water treatment reactors face clogging issues due to rapid calcium carbonate deposition on alkaline agent injectors, leading to frequent maintenance needs and significant operational downtime, as larger outlet diameters enhance deposition while smaller diameters compromise reagent dispersion and reaction efficiency.

Innovation Solution

A reagent injector with a conical dispersion member and adjustable nozzle configuration, reducing outlet diameter to limit deposition while ensuring effective reagent dispersion, featuring a 360° dispersion surface and adjustable distance settings for optimal performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the outlet diameter of injectors is increased, then the reagent dispersion is improved, but the calcium carbonate deposition on injectors increases leading to clogging

Engineering Contradiction:
Improvereagent dispersionVSAvoidinjector clogging
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The injector outlet is divided into multiple nozzles instead of a single large outlet. This segmentation allows the reagent to be dispersed through multiple smaller jets, reducing the deposition on each individual nozzle while maintaining overall dispersion effectiveness. The patent specifies using multiple nozzles arranged in a specific pattern to achieve this segmented dispersion approach.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a spatial arrangement dimension by positioning nozzles at different angles and heights. Instead of a single outlet plane, the nozzles are configured in three-dimensional space with varying orientations, creating a multi-dimensional dispersion pattern that reduces deposition on any single surface while maintaining effective reagent distribution throughout the reactor.

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

2Reliability

If the outlet diameter of injectors is reduced, then the calcium carbonate deposition is limited, but the reagent dispersion ability is reduced

Engineering Contradiction:
Improveinjector cloggingVSAvoidreagent dispersion
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

Multiple smaller nozzles replace a single large outlet, distributing the dispersion function across several smaller jets. Each nozzle has a reduced diameter that minimizes deposition, while the collective effect of multiple nozzles maintains adequate reagent dispersion throughout the reactor volume.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs curved or conical nozzle arrangements where the nozzle outlets are angled relative to each other in a spherical or conical pattern. This curved geometric arrangement optimizes the dispersion trajectory of reagent jets, allowing smaller outlet diameters to achieve effective dispersion by directing flow along curved paths rather than straight lines.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Reliability

If maintenance operations are performed frequently, then the injector clogging is prevented, but the operational downtime increases

Engineering Contradiction:
Improveinjector performanceVSAvoidoperational downtime
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The injector design incorporates features that prevent clogging before it occurs, such as optimized nozzle geometries and angles that discourage calcium carbonate deposition. By designing the system to be more resistant to clogging in the first place, the need for frequent maintenance interventions is reduced, thereby minimizing operational downtime.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The reactor system is designed to allow continuous operation without requiring periodic emptying and manual cleaning of injectors. The modified injector design enables the system to maintain its own performance with minimal human intervention, allowing operators to schedule maintenance during convenient times rather than being forced into frequent shutdowns.

Inventive Principle:
Principle #25Self-service

4Ease of repair

If the reactor is emptied for maintenance, then the injectors can be accessed, but the germination process is stopped and reseeding is required

Engineering Contradiction:
Improveinjector accessVSAvoiddowntime and reseeding
Core Design Contradiction:
Ease of repairVSLoss of time

Solution Approach 1:

The injector system is designed as separable components that can be accessed and maintained independently from the main reactor body. This segmentation allows maintenance personnel to work on injectors without emptying the entire reactor, enabling repair operations while the reactor remains in operation or with minimal disruption to the germination process.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The injectors are designed to be removable from the reactor without requiring complete emptying of the reactor volume. This extraction capability allows maintenance personnel to remove and service injectors while the reactor retains its contents, eliminating the need to stop the germination process and perform reseeding operations.

Inventive Principle:
Principle #2Taking out (Extraction)

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 design significantly reduces maintenance intervention times, avoids reactor draining, and allows flexible maintenance scheduling, resulting in substantial operating gains and reduced downtime.

Implementation Method 1

a member (22) for dispersing the jet, said member (22) having a conical shape

Methodology Applied
Scientific EffectFluid dispersion: Dispersion (of waves)

Implementation Method 2

at least one nozzle (21) intended to inject a jet of said reagent

Methodology Applied
Scientific EffectJet injection: Jet

Implementation Method 3

adding a basic reagent to the water to be treated causing precipitation of carbonates and magnesia

Methodology Applied
Scientific EffectPrecipitation: Precipitation

Data Source

PatentEP2018231B1Use of an reagent injector for equipping a water treatment reactor, comprising a nozzle associated with a dispersing member
Publication Date: 2014.07.16 VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT SAS
  • EP2018231B1 patent drawingFigure 1~3
  • EP2018231B1 patent drawingFigure 4~5

AI summary

The invention concerns a reactant injector for equipping a water treatment reactor, comprising a nozzle associated with a dispersing member, and a corresponding water treatment device. The invention concerns an injector (2) of a reagent into a reactor (2) of a water treatment device, characterized in that said injector (2) comprises at least one nozzle (21) for injecting a jet of said agent, said nozzle being associated with a member for dispersing (22) said jet.