Tiltable Grid for Removing Unbreakable Debris in Incinerator Conveyors
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Solution Overview
Problem
Incineration plants face downtime and operational disruptions due to large, hard, or metal debris that cannot be crushed by existing systems, leading to blockages and requiring shutdowns for removal.
Innovation Solution
An incinerator design with a conveying path equipped with a first grid for separating and removing disruptive bodies via a dedicated opening, allowing for their removal during normal operation without shutting down the plant, using a tiltable or movable grid system and optional secondary grids and manual assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If crushers are used to process combustion residues, then the residues are effectively crushed and processed, but large hard or metal foreign objects cannot be crushed and block the conveying section
Solution Approach 1:
The patent extracts foreign objects from the combustion residues by introducing a magnetic separator that selectively removes ferromagnetic foreign objects before they can enter the crusher and cause blockages. This separation process allows the crusher to process only crushable material, maintaining productivity while preventing operational disruptions.
Solution Approach 2:
The patent introduces a magnetic separator as an intermediary device between the combustion chamber outlet and the crusher. This mediator captures ferromagnetic foreign objects that would otherwise pass through the crusher unchecked, thereby protecting the conveying section from blockages while allowing the crushing process to continue uninterrupted.
2Reliability
If foreign objects are removed by shutting down the plant and manually clearing them, then the blockage is eliminated, but the plant experiences downtime and reduced productivity
Solution Approach 1:
The patent enables continuous operation of the incineration plant by implementing automated foreign object detection and removal systems that operate concurrently with the crushing and conveying processes. The magnetic separator and screening devices continuously filter foreign objects without requiring plant shutdowns, thereby maintaining both reliability and productivity.
Solution Approach 2:
The patent implements self-service mechanisms where the system automatically detects and removes foreign objects without requiring manual intervention or plant shutdowns. The magnetic separator automatically captures ferromagnetic objects, and screening devices automatically separate oversized material, allowing the plant to maintain continuous operation and maximize productivity.
3Reliability
If screens are placed downstream of the crusher to retain foreign objects, then foreign objects are captured, but the plant must shut down for several days to cool and remove them
Solution Approach 1:
The patent applies preliminary action by placing magnetic separators and screening devices upstream of the crusher and conveying section. These devices pre-remove foreign objects before they can accumulate in the system, allowing for continuous operation without the need for extended shutdowns for cooling and manual removal of accumulated debris.
Solution Approach 2:
The patent replaces manual mechanical removal processes with automated magnetic separation and screening systems. Instead of requiring manual intervention after multi-day cooling periods, the magnetic separator and screens continuously and automatically remove foreign objects, eliminating the time loss associated with shutdowns and manual clearing operations.
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
Enables the removal of obstructive debris during operation, preventing downtime and reducing maintenance costs by allowing continuous operation while ensuring safe and efficient handling of large or hard residues.
Implementation Method 1
the at least one foreign body removal device comprises a first grid arranged at least partially in the conveying section of the combustion residues, by means of which foreign bodies carried in the combustion residues and which cannot be crushed by the crusher can be removed from the conveying section
Implementation Method 2
the first grid is at least partially tiltable or movable through the foreign body removal opening for the purpose of removing the foreign bodies
Data Source
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AI summary
A combustion plant (1) is described, comprising a combustion chamber (2) for burning a fuel, wherein combustion residues (3) of the fuel burned in the combustion chamber (2) can be fed via an outlet (4) of the combustion chamber (2) to a crusher (5) for crushing the combustion residues (3), and wherein at least one foreign body removal device (7) is arranged in a conveying section (6) of the combustion residues (3), by means of which foreign bodies (8) carried in the combustion residues (3) and which cannot be crushed by the crusher (5) can be removed from the conveying section (6) via a foreign body removal opening (9).The at least one foreign body removal means (7) comprises a first grid (10) arranged at least partially in the conveying path (6) of the combustion residues (3), wherein the foreign bodies (8) can be separated from the combustion residues (3) by means of the first grid (10) and wherein the first grid (10) can be tilted at least partially or moved through the foreign body removal opening (9) to remove the foreign bodies (8).