666 results about "Fluidized bed drying" patented technology

The present invention relates to methods for producing high levels of alcohol during fermentation of plant material, and to the high alcohol beer produced. The method can include fractionating the plant material. The present invention also relates to methods for producing high protein distiller's dried grain from fermentation of plant material, and to the high protein distiller's dried grain produced. The method can include drying a co-product by ring drying, flash drying, or fluid bed drying. The present invention further relates to reduced stack emissions from drying distillation products from the production of ethanol.

A closed multi-room fluidized bed sludge drying method is provided, which is a sludge drying method having the advantages of simple equipment structure, convenient operation, strong sludge adaptability, high thermal efficiency, safety, continuity, stability, etc. After the mechanically dewatered sludge is mixed with the back-mixed sludge, the mixture is dried room by room in an inert particles multi-room fluidized bed dryer (3). The first room and the second room of the inert particles multi-room fluidized bed dryer (3) adopt inert particles (f) as heat storage medium. Gas from a cyclone separator (5) goes through a spray tower (7) and returns into an air heating unit (4) through a circulating fan (10). Part of dried sludge (e) at the lower part of the cyclone separator (5) enters the inert particles multi-room fluidized bed dryer (3) through the back-mixing in a mixer (2). Waste liquid from the bottom of the spray tower (7) enters a waste liquid circulating pool (8), with part of waste liquid circulating into the spray tower (7) and part into a sewage treatment system.

The present invention harvests and utilizes fluidized bed drying technology and waste heat streams augmented by other available heat sources to dry feedstock or fuel. This method is useful in many industries, including coal-fired power plants. Coal is dried using the present invention before it goes to coal pulverizers and on to the furnace/boiler arrangement. Coal can be intercepted on current coal feed systems ahead of the pulverizers. Drying fuel, such as coal, is done to improve boiler efficiency and reduce emissions. A two-stage bed utilized in the process first “pre-dries and separates” the feed stream into desirable and undesirable feedstock. Then, it incrementally dries and segregates fluidizable and non-fluidizable material from the product stream. This is all completed in a low-temperature, open-air system. Elevation of fan room air temperature is also accomplished using waste heat, thereby making available to the plant system higher temperature media to enhance the feedstock drying process.

The present invention discloses a method for drying high-wet material. Said method includes the following two steps: firstly, quickly drying high-wet material in rotary pneumatic dryer to make its water content be reduced to 25-35%, then feeding the material into fluidized bed drying machine to continuously dry said material and make its water content be less than 17%. Its drying machine unit includes rotary pneumatic dryer and fluidized bed drying machine.

The invention discloses a high-moisture-content lignite predrying method and system integrated with a thermal power plant. In the method, lignite is dried by using hot air as a fluidizing agent and a drying medium in a fluidized bed dryer; and a heater is built in the fluidized bed dryer to supply partial heat for drying. The lignite predrying system integrated with the thermal power plant comprises the fluidized bed dryer, the heater built in the dryer, a deduster, a gas-gas heat exchanger, a gas-water heat exchanger, an air heater and a fan. According to the system, waste heat in the system and low-grade heat energy in the power plant are fully utilized to dry the lignite. By applying the method and the system disclosed by the invention, the moisture content of the lignite fed into a furnace can be reduced, the heat loss of a boiler due to exhaust gas can be reduced, and the efficiency of the lignite boiler is increased; the low-grade heat energy and waste heat resources in the thermal power plant are fully utilized, so that the consumption of high-grade energy sources in a drying process is reduced, and the power generation efficiency of a lignite power plant is increased.

The invention relates to a sludge drying and incineration combined treatment method with good treatment effect, wide sludge adaptability, and safe and stability system. To avoid agglomeration of mechanically dewatered sludge (k) in a fluidized bed dryer (6), a part of dried sludge (c) is premixed with the mechanically dewatered sludge (k) and then fed into the fluidized bed dryer (6). The dried sludge (c) is incinerated into a circulating fluidized bed incinerator (1) to generate superheated vapor. The superheated vapor is condensed to hot water in a heat exchange tube (6-2) of the fluidized bed dryer (6) and then recycled to the circulating fluidized bed incinerator (1). The arrangement of buried pipes (1-3) and fractional air supply inside the circulating fluidized bed incinerator (1) can effectively control the lower temperature of the circulating fluidized bed incinerator (1) to prevent deflagration of dried sludge. The entire system has no emission of pollutants such as unpleasant odor, acidic gases, heavy metals and dioxin; is safe and reliable; and can operate for a long time.

The invention discloses an improving method of resistant starch content, which is characterized by the following: adopting starch of straigt-chain starch with content more than 10% as raw material; allocating 3%-25% starch magma; gelatinizing over 78 deg. c; decomposing starch to form multiple straight-chain starch through proflavine enzyme or degrafting hydrolytic starch enzyme; using acid environment with pH value at 3. 5-6. 5 and second and third carboxylic acid functional groups of citrate to crosslink; setting the density of functional group ion at 1%-15% corresponding to starch density; adopting circulating aging technique for 3-4 times under icy point; spraying to dry starch magma; drying in the cylinder and fluid bed; filtering; drying through hot wind.

The invention relates to an infant nutrition immunity formula powdered milk and a production method thereof, wherein, the production method of the infant nutrition immunity formula powdered milk comprises the following steps: milk which is raw material, is preprocessed, the mixed solution of docosahexaenoic acid and arachidonic acid is prepared, ingredients are mixed, preheating, homogenizing and heating are carried out for sterilizing, decompression is carried out for concentrating, and spray-drying under negative pressure and low temperature and drying on a fluidized bed are carried out, then cooling, packing and inspecting are carried out. The infant nutrition immunity formula powdered milk manufactured by the method of the invention mainly comprises casein phosphoeptide, vitamin D3, lactoferrin, nucleotide, linoleic acid, linolenic acid, the docosahexaenoic acid, the arachidonic acid, fructo-oligosaccharide and galacto-oligosaccharide, which has the advantage of reasonable trophic structure and also ensures that various nutrient substance to be absorbed and deposited to the utmost extend, so as to promote the development of brain and nervous system, improve active immunity, improve intestinal tract micro-ecological environment and strengthen the absorption of calcium, iron and zinc as well as effectively maintain every active nutrient component during the production process.

The present invention constitutes a heat treatment apparatus like a fluidized-bed dryer for heat treating a particulate material in a low temperature, open-air process. Preferably, available waste heat sources within the surrounding industrial plan operation are used to provide heat to the dryer. Moreover, conveyor means contained within the dryer can remove larger, denser particles that could otherwise impede the continuous flow of the particulate material through the dryer or plug the fluidizing dryer. This invention is especially useful for drying coal for an electricity generation plant.

The invention discloses architectural ceramic prepared from industrial solid waste through a dry method and a process for preparing the architectural ceramic. The architectural ceramic comprises the following components in percentage by mass: 30-60% of solid waste, 40-70% of ceramic raw material and 1-3% of ceramic additive, wherein the ceramic raw material is selected from one or a composition of multiple of clay raw material, feldspar raw material or talc, and the ceramic additive is one or a combination of multiple of sodium tripolyphosphate, sodium silicate, ammonium chloride, ammonium citrate, sodium humate, sodium lignin sulfonate sodium, ethylenediamine tetraacetic acid disodium and edetic acid. After being pretreated, the granules of the solid waste are fine and are mixed evenly in a dry mixing manner and a spray drying manner and are directly used for pressing of green bricks or stored in a bin for standby, so that the ball milling energy consumption and the peptization cost are reduced, the humidification pelleting and fluidized bed drying procedures are omitted, the formula can be quickly adjusted according to the functional characteristics of the architectural ceramic, the process is simple and convenient to control, and the architectural ceramic has such good properties as heat preservation, thermal insulation and high strength.

A method and system for processing and recycling infill material of artificial turf. The invention includes drying extracted infill material through a fluid bed dryer, the fluid bed dryer passes a process gas through a bed of solids via a perforated plate. The dried infill material is processed using a plurality of vibrating screens to remove excessively large or small particles from the infill material. The plurality of vibrating screens may be a set of progressively finer mesh screens. The processed infill material is separated by density. The density of the infill material may be determined by a high intensity, uniform sheet of laminar airflow. The separated infill material is discharged and is ready to be used again in another artificial turf. In one embodiment, the infill material includes at least one of graded sand, granulated styrene-butadiene rubber, cork, organic infill, thermoplastic elastomers, or ethylene propylene diene monomers.

A control system for controlling the utilization of heated waste streams for fluidizing particulate matter such as coal in a fluidizing bed dryer. The control system includes a number of graphic user interfaces that allow an operator to more easily monitor and/or control the various regulator devices. The control system controls coal handling or transportation, fluid handling or flow, and the discharge of discarded or separated coal from the dryer.

The invention discloses a cephalosporin suspension granule of which the formula composition comprises drug active ingredients, excipient, suspending agent, disintegrating agent, flavoring agent, coloring agent, stabilizing agent, adhesive and spice. The granule takes cefixime, cefprozil, cefaclor or cefdinir as the main drug ingredient, disintegrating agent and suspending agent with a certain quantity are added into the formula to ensure that the effective ingredients are dissolved out, and the solution has favorable suspending effect. Meanwhile, the invention also discloses a preparation method of the cephalosporin suspension granule, which adopts the wet granulation method to prepare granules and adopts the fluidized bed drying method to dry. The invention adopts the fluidized bed drying technology, so that compared with the traditional oven drying, the invention has the advantages of short drying time, small influence on active matter quality and the like, not only ensures product quality but also improves production efficiency. The granule prepared by the formula of the invention has solid granularity and lowers damage to the granule by fluidized drying.

The invention provides a phenolic resin activated carbon microballon and a rapid preparation method thereof. The rapid preparation method comprises the following steps of: preparing a phenolic resin microballon with a certain size by carrying out spray drying or fluidized bed drying on water-soluble phenolic resin or spirit soluble phenolic resin; thermocuring the microballon; carrying out temperature-rising carbonization on a curing sample in an inert atmosphere; mixing the curing sample (or a carbonized sample) with an active agent; then carrying out temperature-rising carbonized activation in the inert atmosphere; and carrying out cooling, washing, acid washing and washing to obtain a phenolic resin based activated carbon microballon. The invention has the advantages of wide raw material source, low price, simple process, high yield, uniform grain diameter of products, controllable sphere diameter and specific area and convenient industrial implementation.

The present invention relates to a process for reducing coal consumption in coal fired plant with fluidized-bed drying, namely a fluidized-bed drying system is provided between a coal powder bunker as well as a weighing belt and a coal grinding mill of the prior coal fired boiler generating set, and superheated steam which has done partial work is extracted from an steam turbine and used as a drying medium, moisture contained in the coal powder is evaporated with sensible heat and latent heat of the superheated steam, water resulted from the condensation of the superheated steam is fed into a deaerator of the steam turbine via a condensate pump for recirculation. The present invention has advantages of reducing coal consumption and saving coal, recovering residual heat, reducing emission of carbon dioxide and adopting to the national industrial policy on energy saving and emission reduction.

The invention relates to a preparation method of a highly-stable and cold water-soluble natural astaxanthin microcapsule preparation. The method concretely comprises the following steps: uniformly mixing astaxanthin oil, an oil-soluble antioxidant and a water-soluble emulsifier under a heating condition to prepare an oil phase; adding a wall material, a water-soluble antioxidant and a filler to purified water, stirring and dissolving above added materials, and adjusting the pH value of the obtained solution to prepare a water phase; and adding the oil phase to the water phase, uniformly stirring the water phase and the oil phase, grinding the obtained mixture through a sand mill, and carrying out one-step granulation on the obtained emulsion through a cold spraying-starch fluidized bed drying technology to obtain the microcapsule preparation with the particle size of 40-100 meshes. The content reservation rate of the microcapsule preparation disposed at 40DEG C under RH of 75% for 6 months is greater than 95%, and 0.1g of the microcapsule preparation is dissolved in 100ml of water to form a clear, transparent and floating oil-free solution, so the microcapsule preparation can be applied in beverages and other aqueous foods.

The present invention discloses one chlorinated polyethylene drying process. The chlorinated polyethylene drying process with hot air as drying medium includes the first stage of pulse airflow drying and the second stage of fluidized bed drying to dry chlorinated polyethylene with 30-55 % water content into product with 0.3 % below water content. The present invention has simple drying apparatus, high heat efficiency, low water content in product and other advantages.

The invention discloses a preparation method for a cellulose crystal susceptible to re-dispersion after drying, which comprises selection and using for cellulose crystal materials and non-ionic surface active agents; and a preparing and drying processing method for cellulose crystal suspending liquid materials, wherein the cellulose crystal materials comprise different types of cellulose crystals obtained by different cellulose sources and different processing methods; and the non-ionic surface active agents are APG, poly ethylene glycol, and polypropylene glycol. The preparation method comprises the following steps: mixing and stirring one of the non-ionic surface active agents and one of cellulose crystal suspending liquid to obtain the cellulose crystal suspending liquid materials; the cellulose crystal suspending liquid materials are subjected to drying processing by a fluid bed dryer or a spray dryer to obtain granulated, particulate, or powdered cellulose crystals which can disperse in an aqueous phase system quickly; and obtaining a particle size distribution, which can maintain original properties of the cellulose crystals, is similar to that of the original cellulose crystals after re-dispersing. Therefore, the cellulose crystals capable of re-dispersion provide convenience for the storage, the transportation, and the follow-up application.

The invention provides an ABS powder drying method, comprising a step of powder drying and a step of powder recovery. In the step of powder drying the technology of utilization of waste heat of condensed water comprises conveying the steam condensed water in a nitrogen heater to a buffer hot water tank as heating medium hot water in a heater. A slurry recovery tank is connected to a bottom portion of a washing tower. The upper portion diameter of the washing tower is slightly bigger than the bottom portion diameter. No filling material and no tray floor are arranged inside the washing tower. The washing tower is provided with a demister, and second spray water in the upper portion of the washing tower. A split-range controller is arranged on the top portion of the washing tower. A first fire extinguishing device is installed in a fluidized bed dryer. A second fire extinguishing device is installed at the exit port of a cyclone separator. An oxygen detector is installed at a nitrogen inlet side of the nitrogen heater. The method of the invention has the advantages of full utilization of the waste heat, energy saving and consumption reduction, heat utilization efficiency improvement, short process flow, reduction of powder loss, reduction of equipment investment, high operation flexibility and stability in the whole technology process, a good ABS separating effect, and good safety performance.