Magnet Strainer Structure for Fast Catalyst Cleaning

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Solution Overview

Problem

Conventional magnet strainers for xylylenediamine production require cumbersome and unsafe manual cleaning processes due to the integration of the lid and magnetic adsorption means, leading to potential blockages and increased operational burdens.

Innovation Solution

A magnet strainer design where the lid material and magnetic adsorption means are separated, allowing for convenient and safe cleaning by removing only the magnetic adsorption means, reducing the need for lifting heavy components and enabling rapid operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the lid and magnetic adsorption means are integrated in a conventional magnet strainer, then the structure is simpler, but the cleaning process becomes cumbersome and unsafe due to the need to lift heavy components

Engineering Contradiction:
Improvestructure simplicityVSAvoidcleaning convenience
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The magnet strainer is divided into separate components: the lid portion and the magnetic adsorption means are independently designed and can be separated from each other. This segmentation allows the magnetic adsorption means to be removed and cleaned separately without lifting the heavy lid, solving the contradiction between structural simplicity and cleaning convenience.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the lid and magnetic adsorption means are integrated, then fewer parts need to be assembled, but the cleaning time increases due to safety precautions and heavy lifting requirements

Engineering Contradiction:
Improvenumber of partsVSAvoidcleaning time
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

By segmenting the magnet strainer into separable lid and magnetic adsorption means, the cleaning operation can be performed quickly on just the magnetic component without the time-consuming safety procedures and heavy lifting required when these components are integrated.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the magnetic adsorption means is separated from the lid, then cleaning becomes faster and safer, but the device structure becomes more complex

Engineering Contradiction:
Improvecleaning safetyVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The segmentation creates a modular structure where the magnetic adsorption means can be easily detached from the lid. This design adds minimal structural complexity while dramatically improving cleaning safety and efficiency, as the magnetic component can be removed and cleaned without handling the heavy lid or taking safety precautions for heavy lifting.

Inventive Principle:
Principle #1Segmentation

4Ease of operation

If the magnetic adsorption means is separated from the lid, then cleaning becomes more convenient, but the assembly requires more steps

Engineering Contradiction:
Improvecleaning convenienceVSAvoidassembly steps
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The segmented design allows the magnetic adsorption means to be independently assembled into the lid rather than being permanently integrated. This creates a simple snap-fit or detachable connection that requires minimal assembly steps while enabling convenient cleaning operations.

Inventive Principle:
Principle #1Segmentation

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

The design facilitates rapid, convenient, and safe cleaning of the magnet strainer, reducing operational burdens and preventing blockages, thereby enabling stable production of highly pure xylylenediamine over extended periods.

Implementation Method 1

passing the mixed liquid through a magnet strainer to separate the catalyst by magnetic adsorption

Methodology Applied
Scientific EffectMagnetic adsorption: Magnetism

Data Source

PatentEP4692044A1Method for producing xylylenediamine and method for cleaning magnet strainer
Publication Date: 2026.02.11 MITSUBISHI GAS CHEM CO INC
  • EP4692044A1 patent drawingFigure 1
  • EP4692044A1 patent drawingFigure 2
  • EP4692044A1 patent drawingFigure 3(A)~3(D)

AI summary

Provided is a xylylenediamine production method by hydrogenation of dicyanobenzene, the xylylenediamine production method comprising the steps of: hydrogenating the dicyanobenzene in the presence of a catalyst to obtain a mixed liquid containing at least a reaction product and at least a portion of the catalyst; and passing the mixed liquid through a magnet strainer to separate the catalyst by magnetic adsorption, wherein the magnet strainer comprises: a main body having an opening; a lid material placed on the opening of the main body; and a magnetic adsorption means disposed inside the main body and separated from the lid material.