71results about How to "Dwell time is easy to control" patented technology

The invention discloses an aerobic composting device for organic solid waste, which comprises a feeding mixer, a conveyor, a fermentation tower, a scraper blade drive device, an air blower, a heating device, an exhaust fan, a waste gas processing device, centre discharge trays, periphery discharge trays, a swivel type granulator, a granulator drive device, a return conveyor, a granulating agent adding device and a spiral conveyor. The aerobic composting device is characterized in that a conical sealing cover is arranged above the fermentation tower, the swivel type granulator is arranged below the fermentation tower; the feeding mixer is connected with the feeding opening in the side surface of the sealing cover through the conveyor; an inward scraper blade is arranged above the centre discharge tray, and an outward scraper blade is arranged above the periphery discharge tray; and two or more groups of the centre discharge trays and the periphery discharge trays are arranged in the fermentation tower from top to bottom. The aerobic composting device for the organic solid waste disclosed by the invention has the characteristic of processing the organic solid waste in a quantity-reduction, stable and harmless manner to realize resource recycling; in addition, the device occupies a small space and also has the characteristics of automatic feeding, granulating, self-control venting, temperature controlling and tail gas processing.

The invention provides a microchannel plate with a fractal structure, a photocatalytic reactor and an application thereof. The microchannel plate with the fractal structure comprises a first surface and a second surface which are opposite; the first surface and the second surface of the microchannel plate with the fractal structure each is provided with a main pipeline microchannel and multistage H-shaped fractal bifurcated microchannels which are connected with one end of the corresponding main pipeline microchannel, and the H-shaped fractal bifurcated microchannels of the first surface of the microchannel plate with the fractal structure communicate with those of the second surface of the microchannel plate with the fractal structure through connecting through holes. According to the microchannel plate with the fractal structure, the photocatalytic reactor and the application thereof, through forming fractal-structured microchannels in the upper and lower surfaces of the microchannel plate with the fractal structure, three phases, i.e., gas, liquid and solid phases can be effectively distributed, heat transfer and mass transfer are strengthened, the problem in collection of reactants of fractal distribution can be effectively solved, meanwhile, the length of the microchannels can be increased, and the control on reaction flux and reactant residence time is better facilitated.

The invention relates to a method for drying polycarbonate (PC), which is characterized in that PC powder is subjected to drying treatment by adopting a one-stage pneumatic drying and two-stage fluid bed drying combined way, and overhot vapor is used as the drying medium in the one-stage drying process; and hot nitrogen gas is used as the drying medium in the fluid bed drying process, the nitrogen gas is recycled through processes such as washing, cooling, dehumidifying, pressurizing, heating and the like, and the PC powder in washing water is recycled. The water content of a product dried in the three-stage draying combined way can meet the later processing requirement, accident potentials such as dust explosion and the like caused in the drying process of the PC powder can be effectively solved, and the quality of the product can be improved.

The invention discloses a preparation method of citral. The preparation method comprises the following steps: reacting 3-methyl-2-butene-1-aldehyde diisopentenyl acetal in a film cracking reactor with a nitrogen gas stripping function to obtain prenyl alcohol and prenyl isopentenyl ether, adding a mixture of the prenyl alcohol and the prenyl isopentenyl ether into a reactive rectifying tower, continuously extracting the prenyl alcohol from the top of the tower and continuously extracting from the citral from the bottom of the tower. According to the method, the residence time of an intermediate under high-temperature and acidic conditions can be remarkably shortened, byproducts are reduced, and the citral selection performance can be more than 98%.

The invention relates to a method for drying polycarbonate. The method for drying polycarbonate is characterized by comprising the following steps: a. firstly, desorbing and recycling a dichloromethane solvent in polycarbonate powder by a paddle dryer; and b. then drying the polycarbonate powder deeply by a fluidized bed dryer, wherein cycling thermal nitrogen serves as a fluidized bed drying medium. The polycarbonate powder is dried by adopting a two-stage drying technology method, and the recycling issue of the dichloromethane solvent in the process of drying the polycarbonate powder is solved effectively as well as the drying effect is achieved; the accident hazard of flammable and combustible dust of the polycarbonate drying system is prevented; and the safety of the polycarbonate drying system is improved.

The invention relates to the technical field of conveyors, in particular to an automatic chain belt conveyor. The automatic chain belt conveyor comprises a frame, a driving wheel, a driven wheel, and a speed regulation motor which drives the driving wheel to rotate, wherein the driving wheel, the driven wheel and the speed regulation motor are arranged on the frame, the driving wheel drives the driven wheel to rotate via a transmission belt. The automatic chain belt conveyor also comprises an inductive switch, a timer and a control circuit, wherein the speed regulation motor, the inductive switch and the timer are respectively and electrically connected with the control circuit. The invention can prevent the product on a supporting plate from vibrating, can adjust the conveyance speed of the supporting plate, can prevent the misplacing of the product, can prevent the false operation of the product, can realize accurate stop position of the supporting plate, can control the stop time of the supporting plate, and can operate fully automatically by being matched with an ultrasonic machine, a soldering machine, a transfer printing machine, an oiling gun and other mechanical devices. In addition, the invention has firm overall structure and can be moved freely.

The invention relates to a preparation method of a food package paper and belongs to the technical field of inorganic substance or its complex-based treatment on fibers, yarn, wires, fabrics or their fiber products. The preparation method utilizes pulp as a raw material and comprises dipping, squeezing, crushing, aging, yellowing, dissolution, curing, solidification in a solidification bath, primary washing, desulphurization, rinsing, secondary washing, softening, drying and rolling. The preparation method is used for cellulose membrane food package paper processing and has the advantages of stable mechanical properties and high safety.

The invention provides an environmentally-friendly transport vehicle for fresh and live aquatic products. The environmentally-friendly transport vehicle comprises a carriage, a solar cooling system isarranged on the carriage, the carriage is internally provided with keep-alive boxes with a water cycle device, and a solar power system used for power supply is provided; the water cycle device comprises a water pump, a water inlet of the water pump is communicated with the keep-alive boxes, a water outlet of the water pump is connected with a filtering and sterilization box, the filtering and sterilization box is connected with a cool-heat-exchanger through a foam separation device, the cool-heat-exchanger is communicated with the keep-alive boxes, and the water pump is connected with a controller. According to an inner-box environment monitoring system of the transport vehicle, optical fiber sensors are applied to measurement of oxygen, the temperatures and ammonia-nitrogen in water inan aquatic product transporting process, so that the transport environments of the aquatic products are accurately monitored in real time; according to the transport vehicle, the multiple keep-alive boxes are independently controlled, and the appropriate environments are provided for each kind of aquatic products, so that the transporting keep-alive rate of the fresh and live aquatic products is effectively improved.

The invention discloses a non-uniform air distribution interconnected fluidized bed drying device which comprises a separation section, a fluidization section, an air distribution section, built-in heat exchangers and partition plate heat exchangers. The separation section comprises a feeding port and an air outlet. The air distribution section comprises an air inlet, a partition plate and an air distribution plate. The fluidization section is connected between the separation section and the air distribution section and provided with the built-in heat exchangers and the partition plate heat exchangers. The built-in heat exchangers can be classified as low-density arranged built-in heat exchangers for drying, high-density arranged built-in heat exchangers for drying and built-in heat exchangers for cooling according to effect and arrangement density. The partition plate heat exchangers can be classified as low-position partition plate heat exchangers and high-position partition plate heat exchangers according to effect and position. The non-uniform air distribution interconnected fluidized bed drying device enables dried materials to be subjected to interconnected fluidization in non-uniform air distribution and regional fluidization modes and has the advantages of being high in fluidization quality, low in energy consumption, reliable in operation and the like.

The invention relates to the technical field of single-cell protein processing, in particular to a method for producing aerobic type single-cell protein through an autolysis process. The method comprises the steps of settling concentration, centrifugal dewatering, drying, sterilization and smashing and packaging, wherein autolysis and drying are carried out on materials with the moisture content of 78 percent to 85 percent obtained after the step of centrifugal dewatering in sequence. The autolysis process is adopted in the process and the manufactured product, autolytic enzymes fully decompose macromolecule nutrients and cell walls in the autolysis process, and high-content free amino acid and free nucleotide can be generated through autolysis. Meanwhile, polysaccharide of the cell walls is decomposed, so that cells are permeable, it is guaranteed that active substances can flow out of the cells, and therefore the active substances can be directly absorbed and utilized by animals. Autolysis is carried out after centrifugal dewatering, and the high efficiency of autolysis can be ensured; the content of moisture needing to be removed in a drying process after autolysis can be reduced, and therefore drying cost is lowered.

The invention relates to the technical field of single-cell protein processing, in particular to a method for high yield production of aerobic single-cell protein by an autolysis process. The process is characterized in that in each pre-processing unit, the material obtained by a centrifugal dewatering step is transported to a post-processing unit to conduct centralized treatment, and the post-processing unit consists of an autolysis step, a drying step, a sterilization step and a crushing and packaging step. The technology and the prepared product involved in the invention employ the autolysis process, during autolysis, autolytic enzyme fully decomposes macromolecular nutrients and cell walls, autolysis can produce high content free amino acid and free nucleotide, and at the same time cell wall polysaccharides are decomposed, and cells can produce permeability so as to ensure that active substances can flow out of cells to as to be directly absorbed and utilized by animals. Autolysis is carried out after centrifugal dewatering, high efficiency of autolysis can be ensured, and the content of water needing to be removed in a drying process after autolysis can be reduced, thereby reducing the cost of drying.

The present invention relates to a fluidized bed reactor used for oxidizing and deoxidizing and baking high calcium magnesium titanium slag to remove calcium for improving the titanium inert solid grade, and comprises a cylindrical column material settlement section, a cylindrical column material reaction section, and a coniform column air preheating section. The main body of the cylindrical fluidized bed reactor is the cylindrical column material reaction section, and the top part is of a horn mouth shape, the top part of the horn mouth column body is connected with the cylindrical column material settlement section, the bottom end of the reaction is connected with the air preheating section. The upper part of the air preheating section is provided with a material feeding port, and the bottom part is arranged with an air distribution plate under which an air inlet is provided. The lower part of the material reaction is provided with a material discharging port, and the top part is provided with an air outlet. More than one baffle with holes is arranged in the material reaction. The present invention can make the residence time of particles of the high calcium magnesium titanium slag prolong following the increase of the grain size to satisfy the requirements of the reaction time of different grain sizes of particles.

The invention discloses a lotus seed electric heating drum drying device. The lotus seed electric heating drum drying device comprises a rotating electrical heating cylinder, hollow shafts are connected with both ends of the rotating electric heating cylinder, and the hollow shafts are mounted on bearing seats on a bracket. A feeding port is formed on the right side of the rotating electric heating cylinder, a discharging port is formed on the left side of the rotating electric heating cylinder, a rotating conductive slip ring is connected to the tail end of the left side of the left hollow shaft, and a coupling and a reducer are sequentially connected to the tail end of the right side of the right hollow shaft. A variable frequency motor controlled by a forward and reverse controller is connected to the reducer, insulation cotton is arranged between an inner drying cylinder and an outer fixing cylinder in a filled mode as an insulation layer, and a silicone rubber high temperature resistant cable penetrates through the hollow shaft on the left side. One end of the silicone rubber high temperature resistant cable is connected to the rotating conductive slip ring in sequence and connected with an external power supply, and the other end of the silicone rubber high temperature resistant cable is connected to a relay-controlled electric heating tube. A temperature controller is connected to a temperature sensor and a relay separately. According to the lotus seed electric heating drum drying device, energy consumption is saved, constant temperature or variable temperature drying of lotus seeds can be realized, high quality products are produced, the residence time of lotus seeds in the drying cylinder can be controlled, and uniform drying of the lotus seeds are realized.

The invention discloses a multilayer fluidized bed parsing device for conducting pneumatic material return through row tube type heat exchange and coupling of molten salt. The multilayer fluidized bed parsing device comprises a screw feeder (6), a multilayer fluidized bed (1), a slag cooler (8), a separator, a heat exchanger (10), a heat supply device, a water vapor generating unit and a spraying unit. The multilayer fluidized bed parsing device has the advantages of being high in heat transfer efficiency, high in plot ratio, even in heat exchange, controllable in stay time and the like and has an obvious advantage on the aspect of small granular activated coke compared with a traditional technology.

The invention discloses a device and method for producing low-ash low-sulfur carbon black through pyrolysis of waste and old tires and belongs to the technical field of waste and old tire pyrolysis treatment. The device comprises a cracking chamber and an outer heating chamber. The cracking chamber comprises an initial cracking zone, a middle cracking zone and a rear cracking zone. The upper part of the initial cracking zone is provided with a raw material inlet. The tail end of the rear cracking zone is provided with a cracked carbon black outlet. The initial cracking zone, the middle cracking zone and the rear cracking zone are respectively provided with pyrolysis gas outlets. The method comprises natural rubber cracking in the initial cracking zone, synthetic rubber cracking in the middle cracking zone and pyrolysis of carbon black in the rear cracking zone. The device and method are suitable for production of low-ash low-sulfur carbon black through pyrolysis of waste and old tires.

The present invention provides an ethylene tar treating method, which comprises that preheated ethylene tar enters a pretreatment reactor, and contacts a coking reaction effluent from a delayed cokingreaction system and a reaction effluent from a catalytic cracking reaction system, and a light component and a heavy component are obtained after separation; the heavy component enters the delayed coking reaction system, and the generated coking reaction effluent enters the pretreatment reactor; the light component and hydrogen enter a hydrogenation reaction system, and the reaction effluent is separated to obtain gas, a hydrogenated gasoline distillate, a hydrogenated diesel oil distillate and a hydrogenated heavy oil distillate; and the hydrogenated heavy oil distillate enters a catalytic cracking reaction system, and the reaction effluent directly enters the pretreatment reactor through the second material inlet of the pretreatment reactor. With the treating method of the present invention, the stable long-cycle operation of the whole treatment system can be ensured, and the yield of the light oil product is high.

The invention discloses a straw granule drying device. The straw granule drying device comprises a drying generating component, a hot gas generating component, an exhaust gas processing component, a power component and a first supporting plate; the drying generating component, the hot gas generating component, the exhaust gas processing component and the power component are all arranged on the upper surface of the first supporting plate; the hot gas generating component communicates with the drying generating component; the drying generating component communicates with the exhaust gas processing component; and the power component and the hot gas generating component are connected. Through the straw granule drying device, the drying effect and the drying efficiency of straw granules in a drying cylinder in the application process can be ensured, and the whole device is convenient and easy to operate and beneficial for drying of the straw granules.