Multifunctional Continuous Hydrothermal Oxidation System for Corrosion and Oxidant Screening
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Solution Overview
Problem
Current hydrothermal oxidation experiment systems are limited in their functionality, failing to simulate real industrial conditions effectively, particularly in oxidant screening, corrosion research, and multi-stream water flow analysis, which hampers the industrial application of hydrothermal oxidation technology due to incomplete data on corrosion and limited control over reaction parameters.
Innovation Solution
A multifunctional continuous hydrothermal oxidation experiment system is designed to perform wet oxidation and supercritical water oxidation, incorporating parallel oxidant and material pipelines, a heat exchanger, preheater, corrosion experiment device, and advanced monitoring equipment to simulate corrosion at various angles and control reaction parameters like temperature, flow rate, and pressure, enabling comprehensive oxidant comparison and corrosion analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a common continuous hydrothermal oxidation device is used, then the hydrothermal oxidation process can be realized, but the functions of the experiment system are limited and cannot meet the requirements of oxidant screening, oxygen concentration analysis, multi-stream water inflow, and corrosion research
Solution Approach 1:
The patent applies multi-functionality by integrating multiple experimental functions into a single continuous hydrothermal oxidation device. The system simultaneously performs oxidant screening (comparing air, oxygen, and liquid oxidants), oxygen concentration analysis (using an oxygen concentration analyzer), multi-stream water inflow (through separate preheaters for different water sources), and corrosion research (with a dedicated corrosion experiment device). This allows one system to replace multiple separate experimental setups.
2Ease of operation
If corrosion experiment materials are put into the main reactor and taken out after reaction, then the corrosion check is simple and convenient, but the simulation of flush angle and bearing pressure is ignored, which limits the reference value of wet oxidation corrosion experiments
Solution Approach 1:
The patent segments the corrosion experiment function from the main reactor by introducing a separate corrosion experiment device with its own pipeline. This dedicated corrosion pipeline allows independent experimentation on material corrosion under controlled conditions, including simulated flush angles and bearing pressures, without interfering with the main oxidation process. The segmentation enables more reliable and realistic corrosion data while maintaining operational simplicity.
Solution Approach 2:
The patent introduces a corrosion experiment device as an intermediary component between the main reactor and the output system. This intermediary device specifically simulates the corrosion conditions that would occur in industrial applications, including the effects of water flow at different angles and bearing pressures on pipe fittings. By using this intermediary, the system obtains more reliable corrosion data that better reflects real-world conditions.
3Ease of manufacture
If intermittent experiment device is used, then the experiment can be conducted, but it takes a long time to heat and cool down, which is far from the real industrial devices
Solution Approach 1:
The patent implements continuous operation by maintaining a constant flow of water and oxidant through the reactor, eliminating the repeated heating and cooling cycles inherent in intermittent operation. The continuous flow system allows the reactor to maintain steady-state conditions, significantly reducing the time required for temperature adjustments and enabling continuous data collection. This continuous action better simulates real industrial processes where operations run continuously rather than in batches.
4Adaptability or versatility
If only one type of oxidant pipeline is used, then the system structure is simple, but the oxidant screening function cannot be realized
Solution Approach 1:
The patent applies dynamics by making the oxidant supply system adjustable and flexible. Instead of a fixed single-oxidant pipeline, the system incorporates multiple oxidant pipelines (air, oxygen, and liquid oxidant) with controllable flow rates. The dynamic capability allows researchers to switch between different oxidants and adjust their proportions based on experimental requirements, enabling comprehensive oxidant screening while maintaining a relatively simple overall system structure through modular design.
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 simulates industrial conditions, allowing for accurate oxidant comparison, corrosion experimentation, and efficient heat recovery, thereby enhancing the understanding and application of hydrothermal oxidation processes by providing detailed data on corrosion and reaction parameters.
Implementation Method 1
a heat exchanger...The preheater and heat exchanger are used to preheat the oxidant and water to be treated, so as to reduce the energy consumption of the system
Implementation Method 2
a heat exchanger and a preheater are sequentially connected in series on the oxidant pipeline and the material pipeline
Implementation Method 3
hydrothermal oxidation technology has been developed rapidly, and widely used in the treatment of high-concentration toxic and harmful wastewater...wet oxidation reaction and supercritical water oxidation reaction
Implementation Method 4
the outlet of the reactor is sequentially communicated with a corrosion experiment device, an outer pipe of the heat exchanger, a cooler and a gas-liquid separator
Implementation Method 5
a gas outlet of the gas-liquid separator is connected in series with an oxygen concentration analyzer, a gas flowmeter and an off-gas collection device in sequence; a liquid outlet of the gas-liquid separator is connected with an effluent collection device
Data Source
AI summary
Disclosed is a multifunctional continuous hydrothermal oxidation experiment system, comprising a reactor (12), wherein an inlet of the reactor (12) is connected in parallel with an oxidant pipeline and a material pipeline; the oxidant pipeline comprises a gas oxidant delivery pipe and a liquid oxidant delivery pipe connected in parallel, and the gas oxidant pipe comprises an air oxidant delivery pipe and an oxygen delivery pipe connected in parallel; and a heat exchanger and a preheater are sequentially connected in series on the oxidant pipeline and the material pipeline, the oxidant pipeline and the material pipeline are in communication with an inner pipe of the heat exchanger; and the outlet of the reactor (12) is sequentially in communication, by means of piping, with a corrosion experiment device (14), an outer pipe of the heat exchanger, a cooler (16) and a gas-liquid separator (17).