Flue Gas Cleaning Solution Purification System
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Solution Overview
Problem
Existing flue gas cleaning systems face challenges in efficiently purifying the cleaning solution contaminated during the scrubbing process, leading to reduced effectiveness in removing hazardous substances like sulfur oxides and causing pipe clogging.
Innovation Solution
The proposed system includes a scrubber for removing contaminants from flue gas, a cleaning solution purification unit with a circulation buffer tank, coagulant supply apparatus, settling apparatus, and filtering apparatus, and a sludge treatment unit to manage and store sludge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the cleaning solution is circulated and reused without purification, then water consumption is reduced, but the cleaning solution becomes contaminated and loses effectiveness
Solution Approach 1:
The purification process is divided into multiple stages: coagulation, settling, and filtration. Each stage handles specific types of contaminants, allowing the system to maintain cleaning solution effectiveness while enabling extensive reuse and reducing water consumption.
Solution Approach 2:
Coagulant is added to the cleaning solution before settling to pre-treat and aggregate fine particulate contaminants. This preliminary action prevents contaminants from interfering with subsequent filtration and maintains cleaning solution effectiveness over multiple circulation cycles.
2Reliability
If the cleaning solution is purified through multiple processes, then cleaning effectiveness is maintained, but system complexity increases
Solution Approach 1:
Multiple purification functions (coagulation, settling, filtration) are combined into a single integrated purification unit. This merging maintains cleaning solution effectiveness through comprehensive contaminant removal while avoiding the complexity of separate standalone systems for each function.
Solution Approach 2:
The system automatically adds coagulant to the cleaning solution based on circulation time and contaminant load, eliminating the need for manual intervention. The automated operation maintains cleaning effectiveness without increasing operational complexity.
3Loss of substance
If the cleaning solution stays in the system for extended circulation, then water usage efficiency improves, but pipe clogging occurs due to contaminant accumulation
Solution Approach 1:
Coagulant is introduced to the cleaning solution before it enters the settling apparatus, causing fine particulate contaminants to aggregate into larger clumps that settle out. This preliminary treatment prevents contaminant accumulation that would otherwise lead to pipe clogging during extended circulation.
Solution Approach 2:
The settling apparatus continuously removes accumulated contaminants from the cleaning solution by allowing them to settle at the bottom. This extraction of contaminants prevents their buildup in pipes while enabling extended circulation and improving water usage efficiency.
4Reliability
If the filtering apparatus processes all contaminated cleaning solution, then purification effectiveness is maximized, but the filtering apparatus becomes overloaded and requires frequent maintenance
Solution Approach 1:
The purification process is segmented into coagulation, settling, and filtration stages. The settling apparatus handles bulk contaminant removal before the filtering apparatus processes the partially clarified solution. This segmentation reduces the load on the filtering apparatus while maintaining overall purification effectiveness.
Solution Approach 2:
The settling apparatus performs preliminary contaminant removal from the cleaning solution before it enters the filtering apparatus. This pre-treatment reduces the concentration of suspended solids that reach the filter, extending filter life and reducing maintenance frequency while maintaining purification effectiveness.
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 system effectively purifies the contaminated cleaning solution by coagulation, settling, and filtration, reducing the load on the filtering apparatus and preventing pipe clogging, thereby enhancing the overall efficiency of flue gas cleaning.
Implementation Method 1
a coagulant supply apparatus for supplying a coagulant which coagulates contaminants of the contaminated cleaning solution discharged from the scrubber
Implementation Method 2
a settling apparatus for primarily purifying the contaminated cleaning solution discharged from the scrubber by enabling the cleaning solution to stay therein for a predetermined time and enabling settling of the contaminants of the cleaning solution
Implementation Method 3
a filtering apparatus for secondarily purifying the cleaning solution by filtering the contaminated cleaning solution to remove the contaminants
Data Source
Figure 1
Figure 2
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AI summary
The present disclosure relates to a flue gas cleaning solution purification system and, more specifically, to a flue gas cleaning solution purification system including: a scrubber for removing contaminants such as sulfur oxides from flue gas by using a cleaning solution; a cleaning solution purification unit for purifying the contaminated cleaning solution discharged from the scrubber; a cleaning solution resupply unit for resupplying the cleaning solution having been purified by the cleaning solution purification unit to the scrubber; and a sludge treatment unit for treating and storing sludge discharged from the cleaning solution purification unit, wherein the cleaning solution purification unit includes: a circulation buffer tank for temporarily storing the contaminated cleaning solution discharged from the scrubber; a coagulant supply apparatus for supplying a coagulant which coagulates contaminants of the contaminated cleaning solution discharged from the scrubber; a settling apparatus for primarily purifying the contaminated cleaning solution discharged from the scrubber by enabling the cleaning solution to stay therein for a predetermined time and enabling settling of the contaminants; and a filtering apparatus for secondarily purifying the cleaning solution by filtering the contaminated cleaning solution to remove the contaminants.