4 results about "Heptane" patented technology

This invention discloses a method for preparing coal-based high-density fuels, including adamantane fuels and branched polycyclic cyclic alkanes (PCALs), addressing the problems of limited preparation pathways, limited raw materials, poor low-temperature performance of some PCALs, and low catalyst efficiency in existing related fuels. This invention uses a variety of widely available PCALs and PCALs as raw materials, including non-fused-ring PCALs, non-fused-ring PCALs, and PCALs containing bicyclic [2.2.1]heptane substituents, employing AlCl3 or aluminochlorochlorohydrate ionic liquids as isomerization rearrangement catalysts. Molecular structure is controlled through directional isomerization rearrangement reactions, optimizing fuel cohesion and configuration. This method significantly expands raw material sources, increases the yield of target products, shortens reaction time, reduces reaction temperature and cost, and improves the low-temperature performance of raw materials, producing high-density, high thermal oxidation stability, low viscosity, and low freezing point high-performance fuels, laying the foundation for their large-scale production and industrial application.

The utility model relates to the technical field of n-heptane production equipment, in particular to a high-purity n-heptane precise separation device which comprises a rectifying tower, a movable assembly and a filtering assembly, the movable assembly is arranged in the rectifying tower and is used for utilizing and transmitting kinetic energy of steam in the rectifying process and carrying out precise separation of n-heptane in cooperation with the filtering assembly; the filtering assembly is arranged on one side of the movable assembly and used for receiving kinetic energy of the movable assembly, adhesion and attachment of impurities generated on the filtering assembly are avoided, and meanwhile the rectification reaction of internal n-heptane is promoted. Compared with the prior art, the problems that in the prior art, the energy utilization rate is low, and impurity adhesion is serious are solved.

The present invention relates to the technical field of coal processing, and provides a chlorine-containing coal dechlorination method, which comprises: S1, mixing chlorine-containing coal powder and water, and drying to obtain chlorine-containing coal powder A; s2, mixing the chlorine-containing pulverized coal A with the eluent, separating to obtain filter residues, and drying to obtain dechlorinated pulverized coal; the eluent comprises a mixed solution of n-heptane, sulfolane and acetone in a volume ratio of (3-6): 2: 3. By means of the technical scheme, the problem that the chlorine element removal rate is low when chlorine-containing coal is subjected to dechlorination in the prior art is solved.

A fire-fighting composition and method of manufacture of the same has been disclosed herewith. The composition comprises a natural gum, glycol ether, sodium lauryl sulfate, other anionic surfactant(s), non-ionic surfactant(s), and many other propriety components. The resultant composition passed in-house tests—measuring cylinder test, torch test and hot heptane test. The composition does not contain any fluorinated surfactant or compounds. When diluted at 3% concentration, the solution produces satisfactory quantity of foam under pressure to extinguish fire.