Fluorinated graphene improving thermal reaction and combustion characteristics of nano-aluminum powder

Promotional effect of silica on the combustion of nano-sized aluminum powder in carbon dioxide

The Effect of Oxidation of Al(111) Surface on the Catalytic Efficiency of Decomposition of Ammonium Perchlorate: A Density Functional Theory Study

Experimental Investigation on Combustion Characteristics and Agglomeration of Al/NEPE Propellants

Nickel improving the combustion of boron powder

Effects of ammonium perchlorate (AP) particle size on the aluminum (Al) agglomeration in primary combustion of AP/Al binary mixture with a high Al content were investigated experimentally using a CO₂ laser ignition apparatus. The combustion of AP/Al binary mixture and Al agglomeration were observed by a high-speed camera. In addition, the particle size distributions and chemical compositions of the condensed combustion products were analyzed by a laser particle size analyzer, X-ray diffraction, and other experimental techniques. Results show that the increase in AP particle size can decrease the size of Al agglomeration, the combustion efficiency of Al powder, the brightness of oxide cap, and the distance from the flame front to the Al droplet but can increase the flame radius. The Al particle burns in evaporation mode, and the rotation phenomenon occurs in the Al droplet. The rotational velocity of the Al droplet decreases with increasing AP particle size. The Al agglomeration can be formed by two ways in the flame zone. For larger Al agglomerations, the spherical molten Al particles first aggregate, then some small aggregates detach from the surface of the big aggregates, and last, the remaining irregular aggregates become regular bigger spherical agglomerations. For small Al agglomerations, the agglomerates directly separate small agglomerations.

Effects of Ammonium Perchlorate Particle Size on the Aluminum Agglomeration in Primary Combustion of the Ammonium Perchlorate/Aluminum Binary Mixture with a High Aluminum Content

To improve the ignition and combustion characteristics and combustion efficiency of micron-sized aluminum particle in high temperature water vapor atmosphere, a self-designed tube furnace setup was...

Potassium fluoride improving the ignition and combustion performance of micron-sized aluminum particles in high temperature water vapor

The utility model discloses a gas preheating blender belongs to gas and mixes the heating technology field in advance. The utility model discloses a gas preheating blender, including the furnace body,this internal even winding of furnace has a heating resistor silk, and this furnace body is inside to have a bracing piece along its axial installation, be equipped with fan even, interval distribution on the bracing piece, and this bracing piece is located the outside one end of furnace body and links to each other with drive arrangement. The utility model discloses a structural design had bothrealized increase heat exchange coefficient, had reinforceed the effect of heat transfer, increased turbulence intensity simultaneously, made the multi -component gas intensive mixing.

Gas preheating blender

The invention discloses a droplet evaporation and combustion device with observation and shooting convenience and an experimental method and belongs to the technical field of combustion experimental devices. The device comprises a sealing device, a gas supply mechanism, an ignition mechanism and a thermocouple propulsion mechanism. The gas supply mechanism provides gas for the sealing device. Theignition mechanism is used for ignition of fuel. The thermocouple propulsion mechanism comprises a thermocouple, a pushing trolley and a driving mechanism. The thermocouple is mounted on the pushing trolley. A sensing end of the thermocouple stretches out of the pushing trolley. The driving mechanism is connected to the pushing trolley and is used for driving and controlling the motion of the pushing trolley. The device is suitable for studying droplet evaporation or flame change during evaporation or combustion of droplets. The device has a simple overall structure, is easy to operate, produces small experimental result errors and produces accurate and reliable results.

Droplet evaporation and combustion device with observation and shooting convenience and experimental method

The invention discloses a fuel droplet ignition temperature measuring device for visible experiments and belongs to the technical field of combustion experiment equipment. According to the ignition temperature measuring device disclosed by the invention, four ignition columns in symmetric distribution are arranged in a combustion chamber; the four ignition columns encircle a rectangular structure;two ignition wire fastening devices distributed at an interval are arranged on each ignition column; four arc-shaped ignition wires in symmetric distribution are mounted among the four ignition columns through the ignition wire fastening devices in a fastened manner; a through hole through which a combustion sample push mechanism penetrates is formed in one side of the combustion chamber; the push direction of the combustion sample push mechanism is parallel to the plane of the arc-shaped ignition wire and is along the central line of the four arc-shaped ignition wires. By adopting the devicedisclosed by the invention, an ignition process has good stability, the device can be repeatedly used for multiple times according to demands, high stability can be effectively maintained in a repeated use process, and precision of experiment results can be ensured.

Fuel droplet ignition temperature measuring device for visible experiment

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