Sample collection device, system, method and storage medium

Abstract

The embodiment of the invention discloses a sample collection device, system and method and a storage medium. The sample collection device comprises a discharge pipe, a switching valve and an interlayer sleeve, wherein a first port of the discharge pipe is communicated with a sample reaction device; a second port of the discharge pipe is communicated with a first port of the switching valve; a second port of the switching valve is communicated with an inner pipeline of the interlayer sleeve; a third port of the switching valve is communicated with a purging unit; an outer pipeline of the interlayer sleeve is communicated with a negative-pressure unit; the inner pipeline of the interlayer sleeve is communicated with a sample seal device; and the inner pipeline of the interlayer sleeve is communicated with the sample storage device. The sample collection device can achieve the beneficial effect that particle samples can be automatically and continuously collected, and is low in samplingtime consumption and high in efficiency.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of substance reaction detection, and in particular to a sample collection device, system, method and storage medium. Background technique [0002] In the process of material conversion, the continuous characterization of the reaction process is very important for the study of the reaction mechanism and the process control of the reaction. [0003] Compared with the traditional fixed bed system, the fluidized bed system has the advantages of uniform distribution of reaction material particles and being in the same reaction state. The reactant particles collected online from the fluidized bed system can more accurately reflect the microscopic state of the solid particles in the reaction system. [0004] However, the chemical characterization of the gaseous products and particulate matter produced during the reaction varies due to limitations in analytical detection means. Among them...

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Problems solved by technology

[0004] However, due to the limitation of analytical detection means, the chemical characterization of gaseous products and particulate matter produced during the reaction is different

Among them, the gas products can be detected online or collected and detected at any time during the reaction process, but the collection of particulate matter in the reaction system is limited to the two states before the reaction starts and after the end of the reaction / pause. The results obtained from this It is macroscopic and integral, and cannot reflect the changing trend and law of the particulate matter during the transformation process, so it is impossible to conduct kinetic analysis to reveal the reaction mechanism through the characterization of solid particles, and to regulate the reaction process

In addition, in related technologies, there are problems in the collection of particulate matter such as “sampling pipelines and sampling chambers have sample residues that affect subsequent sample collection”, “collected samples cannot be packaged or their physical and chemical properties change during storage”, “continuous sampling cannot ", "Manual operation causes a waste of manpower and material resources" and "a single sampling takes a long time and the collection efficiency is low" and other defects

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