4 results about "Dinitrogen monoxide" patented technology

The invention belongs to the field of chemical engineering manufacturing industry, and relates to equipment and a method for producing cyclic ketone compounds by oxidizing cycloolefin by using waste gas produced by adipic acid. Raw material gas A containing nitrous oxide from an adipic acid production process production line can be subjected to oxygen removal, so that the oxygen content is less than 100ppm; the raw material gas A containing nitrous oxide from the adipic acid production line can also be purified into purer gas containing 50-99% of N2O, and the purer gas is used for reacting with the cycloolefin compound; the reaction equation is CnH2n-2 (cycloolefin) + N2O (nitrous oxide)-> CnH2n-2O (a product cyclic ketone compound) + a byproduct + N2 superscript (nitrogen), wherein n is a positive integer from 4 to 24. The device is stable in consumption quota, low in production cost and high in economic benefit compared with the prior art.

The invention relates to the technical field of gas impurity removal, and discloses a metal modified molecular sieve as well as a preparation method and application thereof. The method comprises the following steps: (1) mixing a metal salt, a nitrogen-containing micromolecule complexing agent, a nitrogen-containing micromolecule dispersing aid and ethanol to obtain a mixed solution, and then adding a molecular sieve for mixing to obtain a mixture; (2) drying the mixture obtained in the step (1), and then roasting; wherein the metal in the metal salt is selected from at least one of Mg, Ca, Sr and Ba; the nitrogen-containing micromolecule complexing agent is selected from at least one of 2-nitrophenol, 3-nitrophenol and 4-nitrophenol. The metal modified molecular sieve prepared by the method has very high adsorption activity on nitrous oxide, oxygen-enriched liquid air containing nitrous oxide is treated, the content of nitrous oxide can be reduced to 5 ppm or below, and the whole process is low in energy consumption, does not generate new impurities, and is green and environment-friendly.

The gas decomposition device includes: a pipe through which a gas to be treated containing oxygen and dinitrogen monoxide flows; a first light source that irradiates an inside of the pipe with first light having a main emission wavelength of 160 nm or more and less than 200 nm; and a second light source that irradiates the inside of the pipe with second light having a main emission wavelength of 200 nm or more and less than 411 nm, in which the first light source and the second light source are disposed such that at least a part of the second light overlaps with at least a part of the first light, and decompose the dinitrogen monoxide.

The present disclosure provides a method for reducing dinitrogen monoxide emission from a soil composition containing a nitrogenous fertilizer. The soil composition contains a base soil and the nitrogenous fertilizer. The method for reducing dinitrogen monoxide emission comprises mixing decomposed leaf matter with the base soil and adjusting the mixed proportion of the decomposed leaf matter to 50 vol% or more of the total of the base soil and the decomposed leaf matter.