Hydrate Jet Crushing Experimental Device
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Solution Overview
Problem
Current methods for mining natural gas hydrates from the seabed are inefficient and pose environmental risks due to the need for decomposing hydrates on the seabed, requiring complex equipment and high energy consumption, and lack optimized process parameters and equipment design for solid-state fluidized mining and crushing.
Innovation Solution
An experimental device and method for simulating the jet crushing process of natural gas hydrates, including a power liquid supply module, hydrate suction module, pipeline conveying module, and hydrate fluidized crushing module, with adjustable parameters and secondary processing for particle separation, to optimize equipment design and mining efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical crushing is adopted for natural gas hydrate mining, then mining efficiency is improved, but equipment complexity and energy consumption increase
Solution Approach 1:
The system divides the mining process into distinct functional modules: jet crushing module for size reduction, suction module for particle collection, and separation module for hydrate recovery. Each module operates independently with optimized parameters, reducing overall system complexity while maintaining high mining efficiency through specialized functionality.
Solution Approach 2:
The patent employs high-pressure jet flow (hydraulic principle) to crush hydrates and uses suction mechanisms (pneumatic/hydraulic principle) to transport crushed particles. This replaces complex mechanical crushing equipment with fluid-based systems, simplifying equipment design while maintaining effective size reduction and particle collection capabilities.
2Productivity
If decompression method is used to extract natural gas hydrates, then extraction is achieved, but geological and ecological disasters occur
Solution Approach 1:
The patent replaces thermal decomposition methods with mechanical jet crushing to size-reduce hydrates. Instead of heating or pressurizing to decompose hydrates chemically, the system uses high-pressure water jets to mechanically fracture and pulverize hydrate crystals, avoiding the harmful thermal effects while achieving effective extraction.
Solution Approach 2:
The system changes the physical state parameters of hydrates from solid to fine particles through mechanical action, then uses hot seawater to decompose these particles. This two-step process avoids direct high-temperature heating of large hydrate masses, reducing the risk of geological disasters while maintaining extraction efficiency.
3Device complexity
If high-pressure jet crushing is used, then equipment is simplified, but parameter optimization is required
Solution Approach 1:
The system employs adjustable parameters including variable jet pressure, controllable suction flow rate, and adjustable separation centrifugal force. These dynamic parameters can be optimized in real-time based on hydrate type and mining conditions, allowing the simplified equipment to adapt to different scenarios without requiring complex fixed-parameter designs.
Solution Approach 2:
The patent incorporates monitoring of particle size distribution, suction efficiency, and separation effectiveness to provide feedback for parameter optimization. This allows the simplified jet crushing system to maintain high precision by continuously adjusting operating parameters based on actual performance data.
Data Source
AI summary
The invention discloses an experimental device for natural gas hydrate solid-state fluidized mining and crushing, the experimental device comprising a power liquid supply module, a hydrate suction module, a pipeline conveying module, a hydrate fluidized crushing module, a secondary processing module and an experimental data information collection and processing module. An experimental method for the experimental device comprises: turning on the power liquid supply module, the hydrate suction module, the pipeline conveying module, the hydrate fluidized crushing module and the secondary processing module, and collecting pressure and flow data at a plurality of locations by the experimental data information collection and processing module. The present invention has the following beneficial effects: a jet solid-state fluidized mining process is simulated, and a plurality of pressure and flow detection points and sampling ports for crushed samples are provided at the same time so as to facilitate parameter collection; a plurality of component parameters are flexibly variable, including changing a drag-back speed of a moving slider, shape parameters of jet nozzles, and a pressure and flow of a power liquid; a spray head is designed to simplify the experimental device, and a dynamic process of jet crushing may be observed from a side surface of an experimental tank.