Experimental system for visually simulating multi-phase flow and phase change of medium

Abstract

The invention discloses an experimental system for visually simulating multi-phase flow and phase change of a medium. The experimental system comprises a gas supply device, a temperature control device, a pressure device, a distribution tank, a gasification furnace, a synthesis gas cooling device, a flow meter and an air blower; the outlet end of the gas supply device is connected with one end ofthe pressure device and used for pressing out the slag simulation medium in the pressure device; the temperature control device is connected with one end of the pressure device and is used for heatingthe solid slag simulation medium in the pressure device to a liquid state; the distribution tank is connected with the pressure device and used for receiving the liquid slag simulation medium pressedout of the pressure device; the distribution tank is connected with the gasification furnace and is used for transferring a liquid slag simulation medium; a synthesis gas cooling device is arranged at the bottom of the gasification furnace; one end of the gasifier is connected with one end of the flowmeter, and the other end of the flowmeter is connected with the air blower. By applying the embodiment of the invention, the influence of behaviors such as wiredrawing, migration, phase change and the like of slag in a synthesis gas cooler on ash deposition phase change in an environment withoutan internal heat source is revealed.

Description

technical field [0001] The invention relates to the technical field of entrained bed coal gasification, in particular to an experimental system for visually simulating multiphase flow and phase transition of media. Background technique [0002] At present, the research on slag deposition in entrained bed coal gasification mainly focuses on the ash deposition and layered flow behavior in the gasifier, and the migration of slag in its slag mouth. The research on the multiphase flow and complex heat transfer process of slag is still in its infancy. [0003] Among them, there is still no clear explanation about the formation mechanism of slag flow, wire drawing, migration, phase transformation and other behaviors in the environment without internal heat source. In view of this, this experimental device intends to focus on the phase transition behavior of slag deposition, supplemented by multiphase flow and complex heat transfer process. Through the combination of experimental s...

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Problems solved by technology

[0002] At present, the research on slag deposition in entrained bed coal gasification mainly focuses on the ash deposition and layered flow behavior in the gasifier, and the migration of slag in its slag mouth. The research on the multiphase flow and complex heat transfer process of slag is still in its infancy

[0003] Among them, there is still no clear explanation on the formation mechanism of slag flow, wire drawing, migration, phase transformation and other behaviors in the environment without internal heat source.

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