Phase-Change Distillation for Multi-Contaminant Desalination
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Solution Overview
Problem
Conventional desalination and water treatment technologies struggle to handle diverse water contaminants effectively, requiring multiple stages and are often costly, complex, and inefficient, while also failing to produce concentrated waste brines or solids for disposal or recovery.
Innovation Solution
The use of heat pipes and phase change devices as the basis for heat transfer in distillation systems, which can efficiently remove a wide range of contaminants, produce high-quality water, and generate concentrated brines or solids, utilizing various energy sources and incorporating additional features like vacuum application and scale prevention mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional desalination technologies (reverse osmosis, thermal distillation) are used to remove diverse water contaminants, then water purification is achieved, but multiple treatment stages are required and system complexity increases
Solution Approach 1:
The patent applies parameter changes by utilizing phase transitions (evaporation and condensation) of water at different temperature and pressure conditions to separate contaminants. The system changes the physical state of water from liquid to vapor and back, effectively removing diverse contaminants including salts, organics, and inorganics in a single integrated process rather than multiple sequential stages.
Solution Approach 2:
The invention employs phase transitions as the core mechanism for separation. Water undergoes evaporation to become vapor, leaving contaminants behind in the liquid phase, then condenses back to liquid form. This phase change process naturally separates a wide range of contaminants without requiring multiple filtration or treatment stages, directly resolving the contradiction between purification effectiveness and system complexity.
2Reliability
If conventional desalination systems are designed to handle diverse contaminants, then purification quality improves, but system cost and maintenance requirements increase
Solution Approach 1:
The system incorporates self-cleaning mechanisms where the phase change process and condensate drainage automatically remove accumulated contaminants and scale from heat transfer surfaces. This self-service capability reduces maintenance requirements and operational costs while maintaining high purification quality, addressing the contradiction between purification performance and system cost.
3Quantity of substance
If conventional distillation systems are used for water treatment, then concentrated brine is produced, but the system cannot effectively crystallize solids for disposal or recovery
Solution Approach 1:
The patent utilizes parameter changes by progressively altering temperature and pressure conditions through multiple effect stages. As water evaporates and concentrates in each subsequent effect, the system reaches conditions where dissolved solids supersaturate and crystallize. This parameter progression enables both high concentrate concentration and effective solid recovery, resolving the contradiction between quantity of concentrate and productivity of solid recovery.
Solution Approach 2:
The system employs phase transitions not only for water separation but also for solid recovery. As concentrated brine progresses through heating effects, water transitions to vapor leaving behind increasingly concentrated solids that eventually crystallize. This dual use of phase transitions achieves both high concentrate concentration and efficient solid recovery for disposal or further processing.
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 effectively removes multiple contaminants to produce water comparable to distilled or ultrapure water, generates valuable concentrates, and produces steam for industrial applications, while being cost-effective and requiring low maintenance.
Implementation Method 1
heat pipes, or other similar phase change devices such as thermosiphons, heat plates, loop heat pipes, pulsed heat pipes
Implementation Method 2
the term 'distillation system' is used and can include all of the aforementioned types of systems
Implementation Method 3
distillation systems such as multiple-effect distillation (MED), multiple-stage flash distillation (MSF), membrane distillation
Implementation Method 4
When referring to the system in this specification, the term 'distillation system' is used
Implementation Method 5
feedwater concentration and steam generation systems
Implementation Method 6
produce concentrated brines or valuable concentrated chemical solutions
Implementation Method 7
distillation systems such as multiple-effect distillation (MED), multiple-stage flash distillation (MSF)
Data Source
AI summary
Embodiments of the invention provide systems and methods for water treatment and/or desalination.