40results about How to "No hot spots" patented technology

The invention discloses a methanation reactor and a methanation process; the methanation reactor comprises a shell body, a gas inlet pipe, a central cylinder, a central pipe, a gas outlet pipe, a cooling medium inlet, a cooling medium outlet and a micro reaction channel, and includes or does not include a sleeve; the micro reaction channel can be internally loaded with a catalytic active component. Compared with the prior art, the methanation reactor has less catalyst use amount; according to the methanation process adopting the methanation reactor, the bed pressure is reduced, the gas residence time is short, the space utilization rate of a reaction bed is high, and gas bias current and short-circuit phenomena do not exist.

The invention discloses a catalytic reactor. The reactor includes a cylindrical sealed pressure-bearing housing (1), a first straight tube (19) extending from the top of the housing (1) to the insideof the housing, a second straight tube (10) extending from the bottom of the housing (1) to the inside of the housing, and a catalytic reaction unit arranged inside the housing (1), below the first straight tube (19), and above the second straight tube (10). Compared with a catalytic reactor in the prior art, the catalytic reactor is compact in structure, less in active metal consumption, high intarget product selectivity, small in bed pressure drop, and low in temperature, and the phenomenon of temperature runaway isn't taken place in the bed.

The invention discloses a methanation reactor and a methanation process. The reactor comprises a cylindrical sealed pressure-bearing shell body (1), a gas inlet pipe (2), a gas outlet pipe (3), a radial catalytic reaction zone and heating equipment, wherein the gas inlet pipe (2) extends inside the shell body from the top of the shell body (1), the gas outlet pipe (3) extends inside the shell body from the bottom of the shell body (1), and the radial catalytic reaction zone is formed in the shell body (1) below the gas inlet pipe (2) and above the gas outlet pipe (3) and comprises the heating equipment. Compared with the prior art, the methanation reactor and the methanation process have the advantages that the methanation reactor disclosed by the invention is low in active metal consumption and smaller in equipment size, and the methanation process adopting the methanation reactor is low in bed layer pressure drop and high in feedstock conversion ratio, is free of gas bias and short-circuit phenomena and has the characteristics of high economic benefit, low comprehensive energy consumption and the like.

The invention discloses an axial reactor. The reactor comprises a radial cylindrical sealed pressure-bearing shell body (2), a gas inlet pipe (18), a gas outlet pipe (13), an axial microchannel reaction zone (16) and an axial catalytic reaction zone (9), wherein the axial microchannel reaction zone (16) is located above the axial catalytic reaction zone (9); the axial microchannel reaction zone (16) comprises one or more disk-shaped axial microchannel reaction units (14) which are connected in series up and down; each axial microchannel reaction unit (14) has a plurality of axial microreaction channels (7); and the axial catalytic reaction zone (9) can contain at least one catalyst bed layer, and reactant fluid can flow through the catalyst bed layers from top to bottom for a catalytic reaction. Compared with the prior art, the reactor disclosed by the invention is compact in structure, low in active metal consumption, low in bed layer pressure drop, short in gas product retention time and high in bed layer space utilization ratio and is free of gas bias and short-circuit phenomena.

The invention discloses an axial-radial micro-catalytic reaction unit and application thereof. The axial-radial micro-catalytic reaction unit contains a central column and a sleeve which coaxially sleeves the central column. The central column has axial micro-reaction channels which axially pass through the central column. Radial micro-reaction channels which pass through the sleeve are arranged in the radial direction of the sleeve. The axial-radial micro-catalytic reaction unit provided by the invention can be used for a reaction with reaction volume changing. In addition, use amount of a catalyst is small; pressure drop is low; retention time is short; utility rate of space is high; and there is no gas bias current or short circuit phenomenon.

The invention discloses a far field microwave breeding method, which comprises the following steps of: regularly irradiating active seeds of a crop by using far field microwave, and stimulating the potentials of the active seeds by using energy memory effect to obtain optimized active seeds of the crop with high yield increasing effect. Experiments such as large-headed atractylodes rhizome breeding and the like show that the method has remarkable advantage on the aspect of improving the yield compared with other methods for obtaining optimized active seeds of crops, the method has little probability of causing seed gene mutation and high safety, and the method is easy to realize diversification of optimized varieties and put into production practice, so the method has great economic benefit and social benefit.

The invention discloses a methanation reactor and a methanation process. The methanation reactor comprises a shell, a gas inlet pipe, a transverse catalytic reaction unit, a longitudinal catalytic reaction unit, a gas outlet pipe, axial micro-reaction channels and radial micro-reaction channels, wherein a component with catalytic activity may be loaded in the axial micro-reaction channels and radial micro-reaction channels. Compared with the prior art, the invention has the advantages that the methanation reactor is reduced in the usage amount of a catalyst; and when the methanation reactor is used for methanation, pressure drop among beds is reduced, gas retention time is short, the utilization rate of the space of reaction beds is high, and the phenomena of bias current and short circuit of gas do not occur.

The invention discloses a methanation reactor and a methanation process; the methanation reactor comprises a shell body, a gas inlet pipe, a central cylinder, a central pipe, a gas outlet pipe, a cooling medium inlet, a cooling medium outlet and a micro reaction channel, and includes or does not include a sleeve; the micro reaction channel can be internally loaded with a catalytic active component. Compared with the prior art, the methanation reactor has less catalyst use amount; according to the methanation process adopting the methanation reactor, the bed pressure is reduced, the gas residence time is short, the space utilization rate of a reaction bed is high, and gas bias current and short-circuit phenomena do not exist.

The invention provides a three-fluid sleeve type heat-pipe heat exchanger, and relates to the technology of a heat exchanger. The three-fluid sleeve type heat-pipe heat exchanger comprises a heat pipe, an upper clapboard, a middle clapboard, a lower clapboard, a peripheral interface and three flow channels, i.e. a heat pipe lower layer flow channel arranged between the lower clapboard and the middle clapboard, a heat pipe upper layer flow channel arranged between the middle clapboard and the upper clapboard, and a flow channel formed by an inner pipe of a heat pipe bundle, an upper header box and a lower header box. When the three-fluid sleeve type heat-pipe heat exchanger runs, thermal fluid passes through the heat pipe lower layer flow channel or a sleeve inner layer pipe flow channel, the heat pipe is quickly started after the heat is absorbed from a lower end and an inner layer pipe, and the whole pipe is even in temperature and free from warm spots, and two cold fluids pass through the other two flow channels, so that the heat exchange efficiency can be greatly improved. The three-fluid sleeve type heat-pipe heat exchanger is a device where the dividing wall type heating is carried out on a plurality of cold fluids by one thermal fluid at the same time, the device is used for the heat exchange of the high-temperature fluid, and the heat energy of the high-temperature fluid is used for heating up the other two cold fluids, so that the cold fluids with different properties are higher in outlet temperature, the outlet temperature of the thermal fluid can be reduced, and the thermal pollution can be avoided. The three-fluid sleeve type heat-pipe heat exchanger is particularly suitable for the condition where the fluid cooling operation is not large in pressure, and the outlet work temperature is required to be higher.

The invention discloses a catalytic reactor. The reactor includes a cylindrical sealed pressure-bearing housing (1), a first straight tube (19) extending from the top of the housing (1) to the insideof the housing, a second straight tube (10) extending from the bottom of the housing (1) to the inside of the housing, and a catalytic reaction unit arranged inside the housing (1), below the first straight tube (19), and above the second straight tube (10). Compared with a catalytic reactor in the prior art, the catalytic reactor is compact in structure, less in active metal consumption, high intarget product selectivity, small in bed pressure drop, and low in temperature, and the phenomenon of temperature runaway isn't taken place in the bed.

The invention relates to a 160km / h express freight car brake pad for preventing thermal cracking of the brake disc and a manufacturing method thereof. The 160km / h express truck brake pads for preventing heat cracking of the brake discs include the following components and weight percentages: boron modified phenolic resin 20%-40%, butyl rubber 10%-18%, reinforcing fiber 6% ‑10%, carbon fiber 10%‑18%, sepiolite fiber 1%‑5%, vermiculite 1%‑8%, fluorite 2%‑8%, magnesium oxide 2%‑9%, clay 2%‑8 %, dispersant 0.2%‑3%. Compared with the prior art, the brake disc of the invention has a lower density, is more convenient to use, and can reduce vehicle quality. The brake pad of the present invention has a microporous structure, and the micropores play the role of heat dissipation, which can effectively reduce the friction temperature, the friction coefficient does not decline at a high temperature of 600°C, and the brake disc has no hot spots and cracks, effectively protecting the couple. The wear of the brake pads is low and the service life is longer than that of similar products.

The invention discloses a radial micro-catalytic reaction unit and application thereof. The radial micro-catalytic reaction unit comprises a central cylinder having a central tube. One end of the central tube is an opening. The outboard of the central cylinder is in fluid communication with the central tube through micro-reaction channels which radially penetrate through the central cylinder. The micro-reaction channels have micro-channel inside openings and micro-channel outside openings which have different diameters. The micro-catalytic reaction unit can be used for a reaction with reaction volume changing. In addition, use amount of a catalyst is small; pressure drop is low; retention time is short; utility rate of space is high; and there is no gas bias current or short circuit phenomenon.