4 results about "Inert gas dilution" patented technology

The present invention relates to the field of flue gas nitrogen oxide emission, and in particular to a method and a combustion system for reducing nitrogen oxide emission. Introducing non-nitrogen inert gas as a combustion diluent to establish ignition; when the amount of circulation flue gas reaches a designed value, the introduction of the non-nitrogen inert gaseous diluent is stopped; and by means of circulation of a part of flue gas and a part of CO2 in the flue gas, the internal circulation of the whole process system is ensured. The present invention achieves the objectives of reducing the nitrogen oxide emission and saving the fuel, thereby saving the energy, protecting the environment, fundamentally solving the emission problem of NOx in the flue gas, and achieving carbon reduction.

The invention provides a novel process route for preparing perfluorohexane (C6F14), and the preparation method comprises the following steps: diluting fluorine gas with inert gas to obtain first mixed gas, and mixing hexafluoropropylene dimer (C6F12) with perfluorinated liquid to obtain first mixed liquid; the first mixed gas and the first mixed solution are treated through a microchannel reactor and then transferred into a reaction kettle, a product in the reaction kettle is collected, the product is separated, and the crude perfluorohexane product is obtained. The problems that in the prior art, the C6F14 preparation process is complex, and the conversion rate is low are solved. On the other hand, the invention discloses a purification method for obtaining a high-purity C6F14 finished product. The conversion rate and the purity of the perfluorohexane obtained by the scheme of the invention are obviously improved.

This invention relates to the field of intelligent construction and safety protection technology for highway precast beam yards, and provides an intelligent production control system and method for highway precast beam yards. The system includes: an image data acquisition module, used to acquire historical cleaning records of target templates during the precast beam yard production process, and extract the initial target image of the target template after the last cleaning; and to acquire the operation data of the localized trapping hood, including the moving speed of the localized trapping hood along the target template, and the current initial grinding image captured by a first camera deployed in the imaging chamber. It can predict the proportion of combustible dust in advance based on the estimated volume of old oil film and residual slurry, and can proactively trigger inert gas dilution and explosion-proof operation modes before the dust enters the dust removal system, significantly improving the dust explosion risk prevention and control capabilities.