40 results about "Hot particle" patented technology

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.

System and method for a continuous process for separating particles according to their magnetic properties such as Curie point includes a feed of hot particles having different magnetic properties on a moving surface spaced above a stationary magnetic assembly. The temperature of the bed of particles is controlled to enable selective separation of different factions of particles based upon the temperature of the particles. The magnets are maintained substantially below their Curie point. Gaseous nitrogen is fed into and from the inside of the magnetic assembly to enhance the cooling of the magnetic assembly and to inhibit oxidation. The gas exits through high temperature bearings to inhibit debris therein. A thermal shield is placed between the moving surface and the magnets and below tubes carrying a cooling fluid to maintain magnets substantially below their Curie point. The entire process is contained with an inert gas-purged cabinet.

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 0.1 gsm.

An external heat extractor for catalytic cracking in which particles can be pre-distributed, suitable for catalytic cracking units in oil refineries, characterized in that the external heat extractor (4) is internally equipped with multiple unit heat exchangers with separate water inlets and water outlets The tube (6), the heat exchange tube (6) extends from the top of the external heat extractor (4) to the bottom, and its bottom end is provided with a guide bracket (2) that limits the lateral swing of the heat exchange tube (6). The lower part of the heat exchange tube (6) is submerged in the dense-phase fluidized bed (11) at the bottom of the external heat extractor (4). The hot catalyst particles that come in from the catalyst inlet (10) in the middle part of the external heat extractor (4) first enter an annular fluidized bed (17), and utilize the predistribution of the annular fluidized bed (17) to the particles to make the hot particles flow from the The upper edge of the inner side wall (15) of the annular fluidized bed (17) or the overflow slot (19) provided on the inner side wall (15) evenly flows into the dense phase fluidized bed (11). In the dense-phase fluidized bed (11), the hot particles flow out from the catalyst outlet (1) at the bottom of the external heat extractor (4) after being cooled by contacting the side wall of the heat exchange tube (6). The fluidizing gas of the dense-phase fluidized bed (11) is introduced from the gas distributor (2) at the bottom, and after passing through the dense-phase fluidized bed (11), it is mixed with the fluidizing gas of the annular fluidized bed (17) and then combined The gas enters the dilute phase space of the regenerator of the catalytic cracking unit through the gas outlet (7) provided on the top of the external heat extractor (4).

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.

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 0.1 gsm.

A carbonaceous feed pyrolysis apparatus is provided including two or more hot particle fluidized 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 fluidized 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.

A method for uniformly heating particles relates to a method for uniformly heating particles. It solves the problem that the actual engine test run is expensive to measure the performance of high-temperature particles, and the particle distribution and temperature characteristics are uncontrollable. The steps of its method are as follows: Weigh the particles with a diameter of 1-500 μm, put the particles into the particle screening and uniform distribution device, start the power supply, preheat the particles, measure the temperature in the furnace body through a thermocouple; The falling particles from the leakage hole of the moving plate are screened, evenly distributed, and heated; the nozzle of the working medium is aimed at the furnace body through the lifting device, and after the gas valve of the gas cylinder is opened, the gas is ejected upward to suspend the screened particles. The transmittance, absorption coefficient and particle size distribution of the particles are obtained, and the motor is turned off. The invention has the advantages of cost reduction, controllable particle distribution and temperature characteristics, and reliable experimental data for in-depth research on physical properties of high-temperature particle spectral characteristics.

The invention discloses a light-weight, high-power, and particle-rich propellant ignition device, which solves the problems of high development and test costs of the existing ignition device, long development period, and easy damage to the thrust chamber caused by the remains of the ignition device after ignition. The ignition device mainly includes an ignition head, an initial charge, a main charge, a shell, a nozzle and a sealing diaphragm. After the ignition head of the ignition device is energized and detonated, the initial charge is ignited, and then the main charge is ignited. The high-temperature gas generated breaks through the sealing diaphragm through the nozzle to produce a continuous and stable flame output rich in hot particles, thereby realizing the engine. Ignition of thrust chamber propellant.

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-phaseanalyte, but also for the SERS test of trace gaseous-phase analyte.