Abstract:
A novel process and apparatus is disclosed for performing chemical reactions. Highly compressed gaseous streams such as H 2 , CO, C0 2 , H 2 0, 0 2 , or CH 4 are raised to Mach speeds to form supersonic jets incorporating Shockwaves. Two or more such jets are physically collided together to form a localized reaction zone where the energy from the Shockwaves causes endothermic reactions wherein the chemical bonds of the reactant gases are broken. Between and among reactants molecular surface interaction and molecular surface chemistry take place. In the ensuing exothermic reactions a desired new chemical product is formed and this product is locked into a lower state of enthalpy (state of energy of formation) through adiabatic cooling by means of a free-jet expansion.
Abstract:
Disclosed is a reactor and agitator useful in a high pressure process for making 1-chloro-3,3,3-trifluoropropene (1233zd) from the reaction of 1,1,1,3,3-pentachloropropane (240fa) and HF, wherein the agitator includes one or more of the following design improvements: (a) double mechanical seals with an inert barrier fluid or a single seal; (b) ceramics on the rotating faces of the seal; (c) ceramics on the static faces of seal; (d) wetted o-rings constructed of spring-energized Teflon and PTFE wedge or dynamic o-ring designs; and (e) wetted metal surfaces of the agitator constructed of a corrosion resistant alloy.
Abstract:
Apparatus and methods are provided for converting methane in a feed stream to acetylene. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to another hydrocarbon process.
Abstract:
Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes processing the acetylene to form a stream having vinyl acetate. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream is treated to convert acetylene to vinyl acetate. The method according to certain aspects includes controlling the level of carbon monoxide to prevent undesired reactions in downstream processing units.
Abstract:
The present invention refers to a nanomaterial synthesis process from the decomposition and subsequent reaction among common and economical insoluble precursors, or precursors which hydrolyze in contact with water, which are incorporated in the internal phase of an emulsion. These insoluble precursors are introduced in the internal phase of an emulsion, then being subject to decomposition and subsequent reaction in the solid state, under shockwave effect during the detonation of the emulsion, the nanomaterial with the intended structure being in the end obtained. The process of the present invention therefore allows obtaining a wide range of nanomaterial as composites or binary, ternary structures or higher structures, with small-sized homogenous primary particles, applicable to several technological fields.
Abstract:
The present invention concerns nanometric-sized ceramic materials in the form of multiple crystalline structures, composites, or solid solutions, the process for their synthesis, and uses thereof. These materials are mainly obtained by detonation of two water-in-oil (W/O) emulsions, one of which is prepared with precursors in order to present a detonation regime with temperature lower than 2000°C, and they present a high chemical and crystalline phase homogeneity, individually for each particle, as well as a set of complementary properties adjustable according to the final applications, such as a homogeneous distribution of the primary particles, very high chemical purity level, crystallite size below 50 nm, surface areas by mass unit between 25 and 500 m2/g, and true particle densities higher than 98% of the theoretical density. This set of characteristics makes this materials particularly suitable for a vast range of applications in the nanotechnology field, such as, for example, nanocoatings, magnetic nanofluids, nanocatalysts, nanosensors, nanopigments, nanoadditives, ultra light nanocomposites, drug release nanoparticles, nanomarkers, nanometric films, etc.
Abstract:
Настоящее изобретение относится к области химии углерода и представляет собой алмаз – углеродный материал, содержащий углерод в виде алмазной кубической модификации и в рентгеноаморфной фазе в соотношении (40-80) : (60-20) по массе углерода, соответственно, и при этом содержит, масс %: углерод 89,1-95,2; водород 1,2-5,0; азот 2,1-4,8; кислород 0,1-4,7; несгораемые примеси 0,1-1,5 и способ его получения, включающий детонацию углеродсодержащего взрывчатого вещества с отрицательным кислородным балансом, помещенного в оболочку из конденсированной фазы, содержащей восстановитель при количественном соотношении массы восстановителя в конденсированной фазе к массе используемого углеродсодержащего взрывчатого вещества не менее 0,01:1, в замкнутом объеме в газовой среде, инертной к углероду. Предложен также способ обработки образцов алмаз – углеродного материала, полученного с помощью детонационного синтеза, для исследования его элементного состава.
Abstract:
A solid material for magnet containing a R-Fe-N-H type magnetic material as a primary component is produced by incorporating hydrogen into a rare earth element-iron-nitrogen type magnetic material powder having a rhombohedral or hexagonal crystal structure, preparing a green formed compact in a magnetic or non-magnetic field, and subjecting the green compact to a shock compaction by the use of an underwater shock wave while preventing the decomposition of a R-Fe-N-H type magnetic material by suppressing its residual temperature after the shock compaction to a temperature not higher than the decomposition temperature of the R-Fe-N-H material (ca. 600 DEG C at an ordinary pressure) through utilizing the characteristics of a shock compaction, such as ultra-high pressure shearing property, activating function and short time phenomenon.
Abstract:
The invention relates to a method for the production of diamond-like material, whereby a mixture of carbon, oxygen, hydrogen, nitrogen and non-flammable adjuncts are subjected to a detonative reaction of explosives with a negative oxygen balance in a closed volume in inert gas atmospheres. The reaction products are cooled and purified and sintered at pressures of 4 to 12 Gpa and temperatures of 1000 DEG C to 3000 DEG C. A diamond-like polycrystalline material is thus obtained, suitable, amongst other things, for surface working, for purification of fluids and for absorption of radio frequencies.
Abstract:
The invention relates to methods of obtaining materials in dispersed state by use of explosion energy. The proposed method consists in that the initial substance or a mixture of substances is exploded under pressure with a shock wave amplitude of at least 3GPa in the presence of a liquid in dispersed state, with the size of the particles being no less than 0.5 mm in a quantity ensuring the conservation of the cluster structure of the particles of the obtained material, and formation of a dispersed system in it, and after the condensation of the liquid vapours a part of the liquid is removed from the obtained mixture in a quantity sufficient to ensure the creation of a structured dispersed system together with the remaining part of the liquid, with the viscosity of the system exceeding at least by an order of magnitude that of the liquid.