Submerged Combustion Evaporator with Separator Plate
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Solution Overview
Problem
Existing submerged combustion evaporators waste energy due to inefficient utilization of latent heat in the vapor, as the vapor is mixed with flue gas, leading to high energy consumption.
Innovation Solution
An evaporator with a separator plate and vapor chamber design that separates the heat transfer and evaporation areas, allowing for the collection of pure vapor and utilization of latent heat, using a pressure difference to control gas flow and prevent bubbles from entering the evaporation area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat exchanger is used to heat the evaporating liquid with the mixed gas of vapor and flue gas, then the liquid can be heated to a higher temperature, but the latent heat in the vapor cannot be effectively utilized and energy is wasted
Solution Approach 1:
The evaporator is divided into two distinct areas: a heat transfer area where submerged combustion occurs and a separate evaporation area where pure vapor is collected. This segmentation allows the heat transfer area to generate high-temperature flue gas while the evaporation area captures pure vapor for latent heat utilization, resolving the contradiction between heating efficiency and energy waste
Solution Approach 2:
The invention extracts and separates the vapor from the mixed gas of vapor and flue gas by creating a dedicated evaporation area with a vapor outlet. This extraction enables the latent heat of the separated vapor to be utilized effectively, preventing the energy waste that occurs when vapor is discharged mixed with flue gas
2Reliability
If the vapor outlet is connected with a vacuum pump to establish negative pressure in the vapor chamber, then pure vapor can be collected more effectively, but the device complexity increases
Solution Approach 1:
The invention uses pressure differential control through a pressure valve on the flue gas outlet to maintain positive pressure in the flue gas chamber, which naturally prevents bubbles from entering the evaporation area. This pneumatic control mechanism achieves reliable vapor separation without requiring complex vacuum pump systems, balancing vapor purity with device simplicity
3Productivity
If the separator plate is inclined to guide bubbles to the heat transfer area, then vapor collection efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The separator plate is designed with an asymmetric inclination, tilted toward the evaporation area. This asymmetric geometry naturally guides bubbles floating in the evaporating liquid toward the heat transfer area, improving vapor collection efficiency through straightforward geometric design rather than requiring high-precision manufacturing adjustments
4Reliability
If the gas pressure in the flue gas chamber is made larger than in the vapor chamber, then bubbles are prevented from entering the evaporation area, but the pressure control system becomes more complex
Solution Approach 1:
The pressure valve on the flue gas outlet automatically maintains positive pressure in the flue gas chamber through self-regulating pressure control. This self-service mechanism prevents bubbles from entering the evaporation area by exploiting the natural pressure differential, achieving reliable contamination prevention without requiring complex external pressure control systems
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 design reduces power consumption by facilitating the collection and use of pure vapor, improving energy efficiency and reducing waste heat.
Implementation Method 1
the gas pressure within the flue gas chamber is larger than a gas pressure within the vapor chamber
Implementation Method 2
the vacuum pump is capable of establishing a negative pressure within the vapor chamber
Implementation Method 3
the heat transfer process and the evaporation process take place simultaneously
Implementation Method 4
evaporation area where the evaporating liquid is evaporated
Implementation Method 5
the separator plate is capable of guiding bubbles existing and floating in the evaporating liquid
Data Source
AI summary
An evaporator for submerged combustion and delayed evaporation, a method of the same and a system of combined evaporation devices, the evaporator for submerged combustion and delayed evaporation comprises: a housing formed with a space for containing an evaporating liquid; a separator plate arranged in an interior of the housing and dividing the housing into a heat transfer (submerged combustion) area and an evaporation area; a vapor chamber located above a liquid surface of the evaporation area; a flue gas chamber located above a liquid surface of the heat transfer area, wherein the flue gas chamber is provided with a flue gas outlet, the flue gas outlet is provided with a pressure valve which is capable of controlling a gas pressure within the flue gas chamber such that a gas pressure within the flue gas chamber is larger than a gas pressure within the vapor chamber.