Oily Waste Treatment Array for Urban Marpol Plants
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Solution Overview
Problem
Current oily waste treatment technologies are inefficient in separating oily waste into recoverable oil, treated water, and solids with low energy consumption and odor-free conditions, making them unsuitable for urban environments.
Innovation Solution
An integrated array of six interconnected subsystems, including a pre-treatment device, centrifuge, dehydration, and filtration systems, which utilize a secondary loop circuit for heating and stirring, minimizing chemical additives and providing odor control through vapor and gas filtration, enabling efficient separation of oily waste into recoverable oil, clean water, and solid byproducts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional oily waste treatment technologies are used, then separation of oily waste into recovered oil, treated water, and solids can be achieved, but energy consumption is high and odor control is insufficient for urban environments
Solution Approach 1:
The treatment system is divided into six distinct but interconnected subsystems: pre-treatment device, centrifugal separator, dehydration device, filtration system, odor control system, and heat recovery system. Each subsystem performs a specific function in the waste treatment process, allowing for optimized energy use in each stage while maintaining comprehensive odor control through the sealed configuration and vapor condensation system.
Solution Approach 2:
The patent integrates multiple treatment functions into a single sealed array where subsystems are thermally and hydraulically connected. The heat recovery system captures vapor from the dehydration process and uses it for pre-heating incoming waste, while the odor control system manages emissions from all subsystems collectively. This merging reduces overall energy consumption and ensures consistent odor control throughout the process.
2Manufacturing precision
If conventional treatment devices are used, then oily waste can be treated, but separation efficiency into three by-products is insufficient
Solution Approach 1:
The separation process is segmented into three distinct stages performed by dedicated subsystems: the pre-treatment device breaks down emulsions and separates free oil, the centrifugal separator divides the remaining mixture into water and solid particles, and the filtration system removes fine particles from the water. This segmentation achieves high separation efficiency for all three by-products while keeping each individual subsystem relatively simple and maintainable.
Solution Approach 2:
The pre-treatment device performs preliminary separation of free oil and breakdown of emulsions before the waste enters the centrifugal separator. This preliminary action reduces the workload on subsequent separation stages, improving overall separation efficiency without requiring overly complex equipment in each stage. The sequential preparation and treatment approach allows each subsystem to be optimized for its specific function.
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 system achieves optimal separation of oily waste into 99.9% water-free oil, odor-free water, and clean solids with minimal energy consumption, suitable for urban environments by maintaining continuous odor control and efficient operation.
Implementation Method 1
The pre-treatment device allows the optimal separation of the oily waste primary product into its by-products, namely recovered oil, processed water and solids
Implementation Method 2
integration of a novel pre-treatment device into an overall array that enables the optimal separation of oily waste
Implementation Method 3
Heat exchanger array of the secondary loop
Implementation Method 4
offering optimal separation of the original oily waste product, due to the unique action of the pretreatment device
Data Source
AI summary
An oily waste treatment array (23) is described, for use in a Marpol plant, allows the separation of low and high-flash-point material into high-flash-point dehydrated recovered oil, cleaned water, and solids, that can be operated in an urban environment. This can be achieved due to the coupling of six constituent devices, linked within the confines (28) of the sealed array (23), that enables odor control, and due to the unique treatment (30), prior to the centrifuge array (31). The pre-treatment array (30) allows the treatment of emulsified mixtures, optimizing the use of chemical additives, by use of an external-flow-array, that is thermally coupled and integrated within the overall array, that features an external circulation heating/stirring loop, in and out of an inclined and contracting tank (20), a ‘stirring region’ (41) and a series of three dimensional injection nozzles (9), making up a ‘dendrite’ structure (10).