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Uniform particle heating method

A cloth heating and particle technology, which is applied to the field of uniformly distributed heating particles, can solve the problems of uncontrollable particle distribution and temperature characteristics, high cost, etc., and achieve the effects of controllable distribution and temperature characteristics, cost reduction, and reliable experimental data.

Inactive Publication Date: 2009-10-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current measurement of high temperature particle performance is the actual engine test run, the cost is expensive, and the particle distribution and temperature characteristics are uncontrollable, and a method for uniformly heating particles is provided.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Embodiment 1: The steps of the method in this embodiment are as follows: a. Turn on the spectrometer and measure the radiation intensity of the reference radiation source for 3 times; b. Weigh the particles with a diameter of 1-500 μm, and add the particles to the particle sieve located at the upper part of the reaction device Distribution device; c. Start the power supply, preheat the particles, measure the temperature in the reaction device through a thermocouple, the temperature is controlled at room temperature to 1600K, and use a circulating water jacket to keep warm; d. The preheated particles are in the particle screening and uniform distribution device When the fixed plate and the moving plate are opened, the leak holes of the fixed plate and the moving plate fall, and the particles are screened, evenly distributed, and heated; The device is aligned with the reaction device, after the gas valve in the preheating chamber of the suspended working medium, the gas is...

specific Embodiment approach 2

[0009] Specific embodiment two: the particle of this embodiment is the spectrally pure Al produced by Shanghai Chemical Reagent General Factory 2 o 3 particle. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Specific Embodiment Three: The diameter of the particles in this embodiment is 1-150 μm. Others are the same as in the first embodiment.

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Abstract

A method for uniformly heating particles relates to a method for uniformly heating particles. It solves the problem that the actual engine test run is expensive to measure the performance of high-temperature particles, and the particle distribution and temperature characteristics are uncontrollable. The steps of its method are as follows: Weigh the particles with a diameter of 1-500 μm, put the particles into the particle screening and uniform distribution device, start the power supply, preheat the particles, measure the temperature in the furnace body through a thermocouple; The falling particles from the leakage hole of the moving plate are screened, evenly distributed, and heated; the nozzle of the working medium is aimed at the furnace body through the lifting device, and after the gas valve of the gas cylinder is opened, the gas is ejected upward to suspend the screened particles. The transmittance, absorption coefficient and particle size distribution of the particles are obtained, and the motor is turned off. The invention has the advantages of cost reduction, controllable particle distribution and temperature characteristics, and reliable experimental data for in-depth research on physical properties of high-temperature particle spectral characteristics.

Description

technical field [0001] In particular, the invention relates to a method for uniformly heating particles. Background technique [0002] Particulate matter exists in many application fields such as chemical industry, metallurgy, power, construction, medicine, biology, food, aerospace, meteorology, etc. The research on particle problems involves astrophysics, geophysics, optics, electromagnetism, microphysics , biology, colloid chemistry, acoustics, military science and many other disciplines. Typical particle-containing media include: flames containing carbon black and fly ash, jets and solid rocket tail flames, translucent materials containing particles such as photosensitive materials, infrared stealth coatings containing particles, semiconductor materials such as cadmium selenide and lead sulfide Wait. At the same time, in a high-temperature combustion system or even at room temperature, ultra-fine elementary particles (such as coal ash particles, metal particles in rocke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N15/00G01N21/25G01M15/00
Inventor 戴景民谈和平崔学风刘晓东
Owner HARBIN INST OF TECH
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