39results about How to "Full gas-solid contact" patented technology

The invention discloses a system for desulfurizing and denitrating active coke flue gas, and a process method. The system comprises an adsorption reactor, a desorption regenerator, a material conveying device and a byproduct conversion device, wherein the devices are connected by specific pipelines and functions of the devices are realized by using a specific process method; the adsorption reactor is a composite layer double-section cross flow moving bed and consists of a denitration section and a desulfurization section, so that SO2, NOx, dioxin, mercury and smoke dust in flue gas are purified in an integrated mode; the desorption regenerator is divided into a preheating area, a regeneration area and a cooling area, so that active coke on which the mercury, and the dioxin are enriched are extracted, and subsequent harmless treatment of the active coke is realized; the desorption regenerator performs heat exchange by a heater and circulates heat energy for recovering, and the byproduct conversion device is used for performing sulphur recycling on desorption regenerated gas generated in the regeneration process; and by the process method, the integrated purification of the flue gas and the harmless treatment of the active coke can be realized.

The invention relates to a high-efficiency slurry bed reactor, which belongs to the field of chemical machinery. It mainly consists of a solid-liquid separator, a variable-diameter inner sleeve, a reactor jacket, a heat exchanger with internal components, a gas riser with nozzles, an inner sleeve with heating and gas distribution functions, anti-blocking nozzles, nozzle mounting plates, Heat exchanger, heating coil outlet, secondary distribution plate, heating coil, etc. The beneficial effects of the present invention are that the distributor of the reactor is not easily blocked, the gas-liquid mixing is uniform, the gas-solid contact is sufficient, the reaction efficiency is high, the carrying amount of the catalyst and the solvent is small, the bias flow, channel flow and dead bed are not easy to occur, and the slurry flow rate Fast, the viscosity of the slurry in the reactor is basically the same, and the heat of reaction can be removed in time, especially in the stage of catalyst reduction and temperature rise, it is easy to realize the stable operation of the reactor. In addition, the distribution of the feed gas in the reactor along the axial direction is basically the same as the concentration of the catalyst. The catalyst can maximize its reactivity, and the space of the reactor can be fully utilized.

The invention relates to a device and a method for synthesizing fullerene structure nanometer WS2 and application of the fullerene structure nanometer WS2. The device comprises a fluidized bed reactor, wherein the fluidized bed reactor comprises a gas distribution plate, a lower-layer dense phase bed and an upper-layer dilute phase bed from bottom to top. Nanometer WO3 is fed into the fluidized bed reactor through a feeding system and is contacted with and reacts with H2S / N2+H2 gas at the bottom of the fluidized bed reactor, so that WS3 powder is in a fluidized state. A reaction product WS2 flows into a cooling system from an outlet at the bottom of the fluidized bed reactor to be cooled and then is fed into a product bin. The device and the method can be used for synthesizing ullerene structure nanometer WS2 particles even in size and with average diameter of less than or equal to 500nm, overcome the defect that superfine powder is difficult to fluidize, can enable nanometer powder to be evenly and quickly fluidized and are suitable for continuous large-scale production of inorganic fullerene nanometer particles. The process and bed type are simple and easy to control and scale up.

The invention relates to a preparation method of nano WS2 with a fullerene structure, a fluidized bed reactor, a fluidifying method and applications. The preparation method comprises two steps of reduction and sulfuration. The invention also relates to a fluidized bed reactor for preparing the nano WS2 with a fullerene structure, by which spherical IF-WS2 with a uniform particle size can be prepared. Compared with the prior art, the preparation method has the advantages that WO3 subjected to reduction is of a porous structure, therefore, the uniform dispersed fluidization of nanoparticles is realized, so that the subsequent sulfuration reaction is greatly shortened, and the purity of products is improved. The fluidized bed reactor is simple in bed type, easy to control and amplify, and applicable to the continuous mass production of inorganic fullerene nanoparticles.

An axial and radial cross flow moving bed adsorption reactor and an activated coke flue gas desulfurization and denitration technology thereof are used for realizing the purposes that SO2, NOx, mercury, dioxin and other pollutants in flue gas are unitedly removed and integrally purified in an adsorption reactor, and belong to the technical field of comprehensive waste flue gas treatment. The adsorption reactor is a combined type double-section double-inverse U-type axial and radial cross flow moving bed, awherein desulfurization area is arranged at a lower section of the axial and radial cross flow moving bed, an annular internal activated coke particle layer and an annular external activated coke particle layer are arranged, and the desulfurization area is divided into a coarse desulfurization area and a fine desulfurization area; a denitration area is arranged at an upper section of the axial and radial cross flow moving bed, and an activated coke particle layer is arranged; an ammonia spray pipe is arranged between the upper section and the lower section; and flue gas is filled along a double-port counter annular gas flow channel structure, the flue gas of the lower section centripetally flows to be desulfurized, and the flue gas of the upper section centrifugally flows to be denitrated. According to the reactor and the technology, desulfurization and denitration are realized in one adsorption reactor, so the adsorption reactor has the advantages of efficient utilization of activated coke, uniform flue gas mixing, sufficient gas-solid contact, stability and reliability in operation, operation cost saving and the like.

The invention belongs to the field of calcination heat treatment of pearlescent materials, and specifically relates to a fluidized continuous calcination system and method for pearlescent materials. Fluidization technology is adopted, and a calcination process integration system with a fluidized bed reactor as the core is used to realize the calcination of pearlescent materials. Continuous calcination heat treatment. The invention has the advantages of high continuous production efficiency, good calcination effect, low production energy consumption, etc., is suitable for the industrial calcination process section of coated titanium-mica pearlescent materials, and has good economic and social benefits.

The invention relates to the production field of pearlescent materials, in particular to a continuous calcination system and method for pearlescent materials. The fluidized continuous calcination technology is used to perform calcination heat treatment on the pearlescent material precursor produced in the coating section to produce pearlescent materials. The present invention simplifies the calcination process by means of an electric heating fluidized bed, improves calcination efficiency, reduces calcination energy consumption, and at the same time greatly reduces the area occupied by the equipment, reduces the vertical height of the equipment, and can meet the annual output of special pearlescent materials lower than 100 tons production. The invention has the advantages of miniaturized equipment volume, short process, high continuous production efficiency, good calcination effect, low production energy consumption, etc., is suitable for the industrial calcination process section of coated titanium mica pearlescent materials, and has good economic and social benefits.

A microwave-fluid bed roasting method for intensifying separation of complex refractory iron ore comprises the following steps of (1) fine grinding the complex refractory iron ore to obtain iron ore powder, then putting the iron ore powder on a quartz mesh in a reaction chamber, and plugging into a thermocouple; (2) introducing protective gas into the reaction chamber to make the iron ore powder be in a fluidized state; (3) generating a microwave by a magnetron of a microwave cavity outside the reaction chamber to heat the iron ore powder; (4) when the temperature of the iron ore powder risesto reaction temperature, introducing reducing gas to make the iron ore powder have a microwave-fluid bed roasting reaction; and (5) cooling to normal temperature after the reaction is ended, taking out microwave roasted ore, and performing low intensity magnetic separation after ore grinding. According to the method disclosed by the invention, through the specific selective heating advantage of the microwave, single separation degree and grindability of the ore are obviously improved, and resource recovery and efficient development and utilization of the complex refractory iron ore are realized.

The invention relates to a device and a method for preparing superfine nickel powder. The device comprises a feeding system, a preheating system, a fluidized bed reactor and a cooling system which are sequentially connected. An outlet of the fluidized bed reactor is connected with a combustion chamber. An outlet of the combustion chamber is connected with the preheating system. After entering a cyclone preheater through the feeding system to be preheated, superfine nickel oxide enters the fluidized bed reactor to be subjected to the reduction reaction; and then the product is discharged after entering the cooling system. High temperature tail gas exhausted from the outlet of the fluidized bed reactor enters the combustion chamber to be burnt after being separated by a first cyclone separator. One path of tail gas is supplied to the preheating system and the other path of tail gas carries out heat exchange with carrier gas exhausted by a second cyclone separator and is supplied to the fluidized bed reactor through a first carrier gas inlet. The invention can solve the problems of poor fluidity, bonding defluidization and industrial scale-up of the superfine nickel powder. The preparation process is simple. The reaction temperature is low. The heat utilization rate is high. The continuous industrial scale production can be implemented.

The invention relates to a system and a method for coating a positive electrode material of a lithium-ion battery with a fast ion conductor. The system mainly includes a feed bin, a screw feeder, a feed valve, a fluidized bed reactor, a discharge valve, and a product cooler , product collector, burner, No. 1 reaction carrier gas preheater, metal reaction raw material generator, reaction raw material nozzle, No. 2 reaction carrier gas preheater, lithium reaction raw material generator, fluidized carrier gas preheater, The first-stage cyclone separator, the second-stage cyclone separator, the bag filter and the hydrochloric acid tail gas absorber are formed according to a predetermined combination; the method is based on the fast ion conductor coating modification method of the system. The fast ion conductor-coated cathode composite powder was obtained by deposition. The invention has the advantages of high coating efficiency, simple and controllable process, low cost, etc., is suitable for large-scale industrial production of lithium-ion battery fast ion conductor coated modified cathode materials, and has good economic and social benefits.