40 results about "Hot particle" patented technology

The invention discloses a preparation method for increasing raman activity of a basement in a surface of a large area of a micro-nano tree structure array, which firstly prepares a large area of a silicon micron cylinder array; a nanometer assembling technology is used for producing a nanometer stick in the silicon micron cylinder array. then a three-dimensional ordered periodic micro-nano structure array is obtained; and various appearance of metal nano-particles are embedded into the three-dimensional ordered periodic micro-nano structure array by using a way of a hydro-thermal synthesis method. A SERS activity basement of the invention can achieve homogenization from a centimeter grade to a large area. The invention designs SERS activity hot-particles on the three-dimensional ordered micro-nano structure, and assembles increasing effect of antenna, the increasing effect of metal/semiconductor intersection and the increasing effect of a gap into one body, then high sensitivity of the SERS activity is obtained, and the SERS activity hot-particles is firmly embedded into the tree micro-nano structure, then the invention is not only applicable for a SERS test of trace liquid-phase analyte, but also for the SERS test of trace gaseous-phase analyte.

A bag filter having a support structure clothed in a filter bag. The cloth of the filter bag is a composite of at least one substrate layer and at least one nanoweb bonded thereto in a face-to-face relationship. The nanoweb is positioned at the surface of the filter bag first exposed to the hot particle laden gas stream and can have a basis weight of greater than about 2 gsm.

The invention has its object to arbitrarily adjust an amount of particles to be circulated without changing a flow rate of a gasification agent to thereby enhance gasification efficiency in a fluidized bed gasification furnace.

The fluidized bed gasification furnace 107 comprises first and second chambers 113 and 114 in communication with each other in a fluidized bed 105. The hot particles 102 separated in the separator 104 and raw material M are introduced into the first chamber 113. The particles 102 introduced from the first chamber 113 through interior in the fluidized bed 105 to the second chamber 114 are supplied in an overflow manner to the fluidized bed combustion furnace 100. A first pressure controller 121 is provided to control the resultant gas induction means 116 such that the pressure in the first chamber 113 is kept to preset pressure 120; and a second pressure controller 124 is provided to control the exhaust gas induction means 118 such that difference between pressure in the first and second chambers 113 and 114 is equal to the preset differential pressure 123, so that the fluidized bed 105 in the first chamber 113 is controlled in height to control an amount of particles 102 to be circulated.

The invention discloses a laser-induced particle jet ignition method; the method is as follows: laser pulses are led into a combustion chamber of an engine through a focusing lens in a common way; the focal position of the focusing lens in the combustion chamber is provided with an absorbing target; the hot particle jet which is generated after the absorbing target is intensively heated by laser is used for starting the combustion or the detonation of flammable mixture in the combustion chamber. The laser ignition method of the invention avoids the use of high-power laser, and increases the convenience for selecting ignition positions and the probability of high-frequency continuous ignition. In addition, the ignition mode is suitable for the ignition of different types of engines.

The invention provides a shell and tube heat exchanger. The shell and tube heat exchanger mainly comprises a casing, heat exchange tubes, an upper head, a lower head, an upper tube plate, a lower tube plate, a middle-shell-side fluidization air distributor, a lower-shell-side fluidization air distributor, a cold spent catalyst inlet, a hot spent catalyst outlet, a hot regenerant inlet, a cold regenerant outlet and a hot stripped oil gas outlet. Heat transferring media flow in corresponding heat exchange tubes which are externally connected with temperature sensor contacts. According to the shell and tube heat exchanger, particle fluidizers are arranged in the heat exchanger to fluidize cold and hot particles, so that fluidized particles with fluid flow characteristics are obtained and flow in the heat exchanger in the flow direction, heat exchange between cold and hot solid particles is achieved, and the temperatures of the heat transferring media are monitored at any moment.

The invention relates to a measuring device and method for infrared spectral radiation characteristics of high-temperature particles, relating to a measuring device and method for infrared spectral radiation characteristics of dispersed particles, which solves the problem that the prior art cannot measure the natural state particle radiation characteristics in the high-temperature continuous spectrum range. The invention adopts the environmental compensation algorithm, realizes the measurement of the spectral equivalent transmittance of high-temperature particles in the natural state, determines the applicability of the measurement of the radiation characteristics of high-temperature particles in the continuous spectrum range, and provides a basis for further inversion of the complex refractive index of high-temperature particles The research provides reliable experimental data and experimental devices, and the measurement uncertainty of the present invention is less than 2%. The invention can be widely used in the fields of chemical industry, metallurgy, power, construction, medicine, biology, food, aerospace, military affairs, atmospheric science and the like.

The invention discloses an external catalytic cracking heater with pre-distributed particles and is suitable for a catalytic cracking device in an oil refinery. The external catalytic cracking heater is characterized in that a plurality of unit type heat exchange tubes (6) with independent water inlets and water outlets are arranged inside an external heater (4); the heat exchange tubes (6) extend from the top to the bottom of the external heater (4), and the bottom of the external heater is provided with a guide bracket (2) which limits transverse swing of the heat exchange tubes (6); the lower parts of the heat exchange tubes (6) are immersed in a dense-phase fluidized bed (11) at the bottom of the external heater (4); hot catalyst particles entering from a catalyst inlet (10) in the middle of the external heater (4) enter an annular fluidized bed (17), and the hot particles uniformly flow into the dense-phase fluidized bed (11) from the upper edge of a side wall (15) on the inner side of the annular fluidized bed (17) or an overflow notch (19) formed in the side wall (15) on the inner side by utilizing the particle pre-distribution function of the annular fluidized bed (17); the hot particles are contacted and cooled with the side wall of the heat exchange tubes (6) and flow out of a catalyst outlet (1) at the bottom of the external heater (4) in the dense-phase fluidized bed (11); and fluidized gas in the dense-phase fluidized bed (11) is introduced from a bottom gas distributor (2), and the fluidized gas which passes through the dense-phase fluidized bed (11) and the fluidized gas in the annular fluidized bed (17) are mixed to enter a dilute phase space of a catalytic cracking device regenerator through a gas outlet (7) formed on the top of the external heater (4).

A carbonaceous feed pyrolysis apparatus is provided including two or more hot particle fluidised beds, and one or more positive displacement apparatus for the transfer of hot particles between two or more of the beds, wherein one or more of the fluidised beds contains a combustion zone. A bio-oil production process is also provided, including pyrolysis of a carbonaceous bio-mass using two or more fluidized beds, including a first combustion zone carried out in one or more combustion fluidized beds in which a particulate material is fluidized and heated, and a second pyrolysis zone carried out in one or more pyrolysis fluidized beds in which the hot particles heated in the combustion zone are used for pyrolysis of the bio-mass.

The invention provides a flow diversion and pressure relief device, which includes a housing, and a tower-shaped pressure relief structure is arranged inside the casing. The tower-type pressure relief structure includes flow diversion guide plates stacked in a tower shape. There are ventilation holes on the surface. The beneficial effects of the invention are: the energy of the hot gas is consumed after the device is used, and the scorching particles are filtered, which greatly increases the safety of the switchgear and does not affect the external dimensions of the switchgear.

The invention provides an oxide cathode, which particularly comprises the following steps: preparing a cathode-based metal, and reserving a geometric margin on the peripheral surface of an emission layer; pouring nickel powder onto the cathode-based metal by a molding method and putting the entire cathode-based metal together with a mold into a hydrogen furnace for sintering into a nickel sponge layer, reserving a certain geometric margin on the prepared nickel sponge layer, filling the nickel sponge layer with alkali earth metal carbonate, mechanically compacting an emission surface of a cathode emission layer, and removing the residual geometric margin; carrying out pre-decomposition on the oxide cathode before pipe filling; and clamping the oxide cathode on a chuck of a lathe, turning the emission layer and the peripheral surface, removing the residual geometric margin, and then wiping away all particles attached to the cathode surface. The cathode surface provided by the invention becomes smooth, regular, bright and clean; a hot particle emission angle is reduced; deformation of emission electron density distribution is limited; the particle bombardment resistance of the cathode is improved; the sparking probability of the cathode emission surface is reduced; the work stability of the cathode is improved; and the lifetime of the cathode is prolonged.

The invention relates to a manufacturing process of electroplating an anti-reflection sapphire film onto a cell phone cover plate, wherein the process includes the processes of: surface reinforcement of glass, ultrasonic cleaning, vacuum electroplating, vacuum gas phase film plating and microwave hot-particle gas-phase deposition. By electroplating the anti-reflection sapphire film onto a common glass plate, the glass plate is comparable with sapphire glass in hardness, and meanwhile, the defect of low light transmittance of the sapphire is overcome. The product, compared with the sapphire, is also greatly improved in yield. The creative technology can replace a simple sapphire process. The product is convenient and quick to process and has better advantages than the sapphire in cost.

A residuum feedstock is upgraded in a short vapor contact time thermal process unit (11) comprised of a horizontal moving bed of fluidized hot particles and is then fed to a fluid catalytic cracking reactor (17). Hot flue gases from the fluid catalytic cracking regenerator (27) are used to circulate solid particles and to provide process heat to the thermal process unit (11).

The invention relates to a preparation method of a composite fiber, in particular to a preparation method of a composite fiber loaded with nanoparticles by a thermal spray bonding method, comprising the following steps: 1) by mass parts, 1-25 parts with a particle diameter of about 50 -200nm including but not limited to titanium dioxide, silicon dioxide, calcium oxide, magnesium oxide, apatite and other nanoparticles heated to 80-120 degrees; 2) according to the number of parts by mass, put 5-120 parts of synthetic fibers in the container , and place the container in an oven at 70-110 degrees; 3) spray the hot particles obtained in step 1) into the container along with the hot air flow, and circulate in the container for 1-5 hours and then cool to obtain the desired Composite fibers. The invention has low production cost, can realize high loading of nano particles, and the loading rate can reach up to 10% of the synthetic fiber weight.

The invention provides a combustible glue for destroying an unexploded bullet and a preparation method and application. The combustible glue for destroying the unexploded bullet comprises a colloidalbinder and a composite aluminothermic agent particle, the mass ratio of the colloidal binder and the colloidal binder to the composite aluminothermic agent particle is 15-20:100, and the combustible glue for destroying the unexploded bullet is prepared by coating a colloid binder on the outer surface of the composite aluminothermic agent particles less than or equal to 3 mm; the colloid adhesive comprises 23-30 wt% of liquid nitrile rubber, 18-23 wt% of KNO3, 43-57 wt% of collodion and 2-4 wt% of Mg powder. The preparation method comprises the following steps that firstly, the composite aluminum heat agent powder is prepared into particles, and then the outer surface of the composite aluminum hot particle is coated with a colloidal binder to prepare the combustible glue. The preparation method is simple and convenient, the operation is easy, the aluminum powder in the composite aluminum heat agent is in close contact with the oxide, the reaction spreading rate is increased, the reaction is more stable, the burning capacity is enhanced, the traditional application mode of the composite aluminum heat agent is improved, the limitation of the mold is eliminated, and the application field of the composite aluminum heat agent is expanded.