8 results about "Laser raman spectroscopy" patented technology

The application discloses a household garbage fine separation method and system suitable for pyrolysis and fermentation, and belongs to the technical field of solid waste treatment and resource utilization, and comprises pre-crushing, first magnetic separation, drum screening, air separation, fine crushing, second magnetic separation and Raman light selection; a separation equipment integrating a visual sensor and a laser Raman spectrum probe is adopted to identify and separate the material after the second magnetic separation, so that different kinds of plastics are separated based on the molecular vibration fingerprint information of the material; wherein each step is uniformly scheduled and controlled by an automatic control system according to a preset program or real-time feedback parameters, and the dust generated in the whole process is collected and purified by a tail gas dust removal control system. Through the construction of a multi-stage collaborative process route, the material is fully dissociated and purified step by step, and the problems of low separation precision and poor system collaboration are solved by cooperating with automatic unified scheduling and full-process dust removal.

The application provides a fault identification method and system based on multi-element spectral mineral anomaly analysis, relates to the fields of geology, spectroscopy, petrology and engineering geology, and a specific scheme comprises the following steps: in-situ testing of tunnel surrounding rock is carried out by using a visible light-near infrared, mid-infrared and laser Raman spectrometer, and mixed spectral variation characteristics are extracted; based on the mixed spectral variation characteristics, the mineral composition of the tunnel surrounding rock is identified according to the spectral identification standard of the abnormal mineral combination of the fault zone, quantitative inversion of the minerals is carried out, and the mineral content is obtained; according to the mineral anomaly mode of the fault zone, mineral anomaly analysis is carried out on the mineral composition, and the mineral anomaly type is obtained; based on the differential change of the mineral content and the mineral anomaly type, mineralogical anomaly characteristic analysis is carried out, and the fault identification result is output; the application replaces the experience knowledge of traditional geologists with quantitative information of multi-element spectral mineral anomaly, and further improves the accuracy and efficiency of fault identification in tunnels and underground engineering.

The carbon material dispersion liquid disclosed herein contains a crystalline carbon material, a dispersant which has a basic functional group and a weight average molecular weight of 1,000 or more, and a nonaqueous solvent. The carbon material in the carbon material dispersion liquid has a peak intensity ratio (IG / ID) of 45 or less as obtained by laser Raman spectroscopy. The carbon material dispersion liquid has a temperature change rate X of 1.0 or less, the temperature change rate X being expressed by the following formula: X = |D2 - D1| / D1 (wherein D1 is the median diameter (µm) of the carbon material in the carbon material dispersion liquid at 20°C, D1 ≤ 30 is satisfied, and D2 is the median diameter (µm) of the carbon material in the carbon material dispersion liquid at 80°C).

The application discloses a kind of detection methods of regenerated polyester fiber, comprising the following detection steps: step S1, detection cloth is laid on detection bearing seat, detection bearing seat includes arc surface in upper portion, cloth is laid with arc surface and is attached;Step S2, open detection light path, the light of detection light path is focused on the P point of cloth outer surface, the light of detection light path is shot and the included angle α is formed with the normal direction of cloth at P point;Step S3, adjust the height difference of detection light path and cloth, so that the included angle α changes, to adapt to the included angle α value required by different cloth;Step S4, using laser raman spectrometer as the light source of detection light path, to detect the regenerated polyester fiber of cloth.The application provides a kind of detection methods of regenerated polyester fiber, changes incident included angle α to meet the detection needs of different cloth.

Disclosed is an out-field detection device, comprising an out-field stainless steel substrate, a passivation solution container, a cover glass, an electrochemical workstation, a Raman spectrometer, a Raman laser emission source, and a peristaltic pump. The passivation solution container is configured to contain a passivation solution; the cover glass is configured to seal the passivation solution container; the peristaltic pump is in fluid communication with the passivation solution container and configured to control flow of the passivation solution; the electrochemical workstation is configured to apply a dynamic potential to the out-field stainless steel substrate and measure a polarization curve, the electrochemical workstation is provided with a working electrode interface configured to establish electrical connection; the Raman laser emission source is configured to emit laser light toward the passivation solution; the Raman spectrometer is configured to obtain a Raman spectrum of the passivation solution.

The balloon catheter includes: a shaft; and a balloon having a straight tube portion and a tapered portion, wherein the balloon has a wing-shaped portion and a protrusion on an outer surface, and a scattering intensity in each of the cross sections measured by laser Raman spectroscopy satisfies Expression (1): Ime>Ite (1) where Ime is Ia / Ib at a central part of a base end part of the protrusion on the straight tube portion, and Itc is Ia / Ib at a central part of a base end part of the protrusion on the tapered portion, Ia being a ratio of a peak intensity in the X direction to a peak intensity in the Y direction at a wavenumber of 1640 cm−1, Ib being a ratio of a peak intensity in the X direction to a peak intensity in the Y direction at a wavenumber of 1440 cm−1.

This invention discloses a high-precision proportioning system and control method for dissolving and mixing silane mixtures, relating to the field of mixing equipment technology. The system includes a raw material storage module consisting of three stainless steel tanks for storing silane, diluent gas, and solvent respectively, with passivated inner walls and insulated outer walls; a precision metering module equipped with a plunger pump and a mass flow meter for real-time flow feedback; a dissolution and mixing module, a double-jacketed tank with atomizing nozzles and a double-layered oblique-blade counter-current stirring impeller; a temperature and pressure control module including a jacket temperature controller and a tank top pressure relief valve; a concentration monitoring module equipped with an online laser Raman spectrometer; a tail gas treatment module consisting of an adsorption tower and a catalytic burner; and a central control module using a PLC and touchscreen to achieve fully automated control of the entire process. All modules work together to prepare the mixed gas. This invention improves the proportioning accuracy and dissolution efficiency of the silane mixture, stabilizes concentration drift, and provides environmentally friendly tail gas treatment; it is adaptable to high-precision requirements in various scenarios, providing stable raw materials for downstream processes.