Apparatus and method for thermophysical/chemical visualization and spectroscopic measurement of solid particles
A technology of spectral measurement and thermophysics, applied in the fields of energy, chemical industry, and environment, can solve problems such as difficulty in obtaining effective and practical data, easy changes in attitude, and difficulty in accessing spectral methods, etc., to achieve the effect of visualization and spectral measurement
Active Publication Date: 2020-03-13
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
Among them, the drop reactor can be used to visualize the thermophysical / thermochemical change process of a single solid particle, but because the solid particle is always in motion, it is difficult to combine the spectrum to analyze the surface and surrounding gas phase products, and it is also difficult to combine high The resolution microscopic imaging method can carry out fine measurement of tiny solid single particles; plate reactors (including crucible reactors) can be used to carry out visual research on the thermophysical / thermochemical change process of tiny solid single particles, but on the one hand, due to the Existence makes it difficult to access spectroscopic methods. On the other hand, because solid particles must be placed on the bottom plate, the results are affected by complex wall and gas phase boundary conditions, and the attitude of solid particles is easily changed during the heating process. Therefore, it is difficult to obtain effective and useful data
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[0055] Herein, for purposes of describing various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, one skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
[0056] Unless the context requires otherwise, herein, the word "comprise" and its variants, such as "comprising" and "having" should be interpreted in an open and inclusive sense, ie, "including, but not limited to".
[0057] Reference herein to "an embodiment" or "another embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least one embodiment...
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The invention discloses a device and a method used for thermo-physical / chemical visualization of a solid particle and spectral measurement. The device includes a reaction cavity, an air exhaust / air intake system, a particle suspension system, a particle sample introduction system, a movable heating device, a temperature control system, and an optical measurement system. The device utilizes a vacuum suction principle to make the reaction cavity and the particle suspension system form a pressure difference, suspends tiny solid single particles in a reaction position, and ensures that the contactarea between the solid particles and particle suspension is much smaller than the central cross section of the particles, so that a uniform gas phase environment is formed around the tiny solid single particles, thereby achieving study of a thermophysical / thermochemical change process of the tiny solid single particles.
Description
technical field [0001] The invention belongs to the fields of energy, environment and chemical industry. Specifically, the invention relates to a device and method for thermophysical / chemical visualization and spectral measurement of solid particles; more specifically, it is used for thermophysical / thermochemical Apparatus and method for visualization and spectral measurement. [0002] technical background [0003] Fluidized bed technology has become a key technology in the efficient and clean utilization of coal, biomass and solid waste. By grinding large pieces of solid coal, biomass, and solid waste into millimeter or even micron-sized tiny solid particles, they can be suspended in the moving fluid, and use airflow to organize the movement of tiny solid particles in the fluidized bed , forming a uniform reaction atmosphere, so as to achieve the purpose of improving conversion efficiency and reducing the generation of pollutants and harmful substances. The development of ...
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IPC IPC(8): G01N21/01G01N21/27G01N21/64G01N21/85
Inventor 李玉阳李天宇廉天佑黄冰瑶
Owner SHANGHAI JIAOTONG UNIV