Fuel Pellet Pressure Vessel with Vibrating Screen Separation
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Solution Overview
Problem
Current technologies lack an efficient method to separate and recover fuel pellets from storage facilities, leading to unnecessary loss of usable pellets during cleaning, as existing systems cannot effectively distinguish between pellets and residues, resulting in incomplete utilization of fuel pellets for boiler charging.
Innovation Solution
Incorporating a vibrating screen in one of the pressure vessel chambers, which separates fuel pellets from residues and contaminants using a cyclone separator, allowing the separation of reusable pellets and their subsequent reloading into the storage facility, while ensuring minimal dust in the air flow through filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If storage facilities are cleaned by emptying the stockpile without separation devices, then the storage facility can be cleaned, but fuel pellets suitable for boiler charging are discarded along with pellet residues and dust
Solution Approach 1:
The pressure vessel is divided into multiple chambers (first chamber with vibrating screen, second chamber for collection, third chamber for delivery) to separate different functions: screening, collection, and delivery. This segmentation allows fuel pellets to be separated from residues and dust while maintaining cleaning effectiveness.
Solution Approach 2:
A vibrating screen is installed in the first chamber to mechanically vibrate and separate fuel pellets from pellet residues and dust based on size differences. The vibration enables effective separation without discarding usable fuel pellets during cleaning.
2Loss of substance
If a vibrating screen is added to separate fuel pellets from residues, then fuel pellet recovery is improved, but the device complexity increases
Solution Approach 1:
The pressure vessel, originally designed for simple fuel pellet delivery, is enhanced with multi-functionality by adding a vibrating screen for separation, multiple chambers for different operations, and connection to existing conveying lines. This allows the same system to perform cleaning, separation, and delivery functions without requiring entirely new equipment.
Solution Approach 2:
The vibrating screen automatically separates fuel pellets from residues and dust based on size differences, operating autonomously within the pressure vessel system. The negative pressure from the fan assists the separation process, reducing the need for additional complex control mechanisms.
3Device complexity
If the chamber with vibrating screen is used for both cleaning and delivery, then device simplicity is maintained, but the chamber cannot be used for delivery when cleaning is performed
Solution Approach 1:
The pressure vessel is segmented into multiple chambers: the first chamber with the vibrating screen for cleaning and separation, the second chamber for collecting separated material, and the third chamber for fuel pellet delivery. This segmentation allows each chamber to have dedicated functions, enabling the delivery chamber to operate independently even when cleaning is performed in the first chamber.
4Productivity
If negative pressure is applied in the chamber below the vibrating screen to support passage of fine-grained material, then separation efficiency is improved, but dust contamination in the air flow increases
Solution Approach 1:
The negative pressure applied in the chamber below the vibrating screen, which could potentially draw in dust, is instead used beneficially to support the passage of fine-grained discharge material through the vibrating screen. The system converts the potential harm of dust contamination into a benefit by using the negative pressure to enhance separation efficiency, while filters prevent actual dust contamination.
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 solution enables efficient cleaning and reloading of fuel pellets, minimizing waste and optimizing the reuse of pellets, allowing for continuous operation of the storage facility with reduced pellet loss and improved operational efficiency.
Implementation Method 1
the discharged material sucked from a storage container for fuel pellets to be cleaned through an intake line into the chamber with the vibrating sieve, after being separated from the conveying air flow
Implementation Method 2
with the help of which the fuel pellets suitable for charging the boiler are separated from the pellet residues, dust particles and other contaminants are separated
Implementation Method 3
The negative pressure in the chamber below the vibrating screen supports the passage of the fine-grained discharge material through the vibrating screen
Data Source
Figure 1
AI summary
A vehicle is described with a pressure vessel (1) for receiving fuel pellets, comprising at least two chambers (2, 3) that can be optionally connected to the pressure or suction side of a blower (13), each with a discharge hopper (10) connected to a conveying line (12). For pellet cleaning, it is proposed that one of the two chambers (2, 3) has a vibrating screen (6) that can be fed with bulk material containing fuel pellets via a cyclone separator (20), the overflow (7) of which opens into the other chamber (3).