41results about How to "Adjust dwell time" patented technology

The invention discloses an adjustable heat transfer heat exchanger. The adjustable heat transfer heat exchanger comprises a main shell which is cylindrical, end sockets are mounted at the two ends ofthe main shell in a sealed mode correspondingly, a cold fluid inlet is fixedly formed in the top end of the end socket at one end, a cold fluid outlet is formed in the bottom of the end socket at theother end, pipe plates are mounted at the positions, close to the end sockets, of the interior of the main shell in a sealed mode, a plurality of heat transfer pipes are connected between the pipe plates, a plurality of baffle plates are fixedly mounted on the outer side, close to the heat transfer pipes, of the main shell, a plurality of mounting holes used for mounting the heat transfer pipes are formed in the baffle plates, phonon rings are fixedly embedded in the mounting holes, and inner rings of the phonon rings are in sealed connection with the outer walls of the heat transfer pipes. According to the adjustable heat transfer heat exchanger, the inner walls of the heat transfer pipes and the outer walls of the baffle plates are rapidly descaled and prevented from being scaled throughthe phonon rings inside the baffle plates, and the problems that dirt is extremely likely to be deposited on the pipe walls, and the heat exchange efficiency of the heat exchanger is reduced are effectively solved.

The invention relates to a blast furnace slag sensible heat recovery slag cooler which is used for furnace slag waste heat recovery, and belongs to the field of heat exchange. The blast furnace slag sensible heat recovery slag cooler comprises a plate or tube type heat exchange core, a furnace slag inlet, a louver type furnace slag outlet baffle, a furnace slag outlet hopper, a furnace slag outlet, a cooling water inlet, a steam outlet, a shell and a heat preservation layer; the heat exchange core of the blast furnace slag sensible heat recovery slag cooler is formed by stacking a plurality of plate bundles or tube bundles according to a certain manner. High-temperature furnace slag particles are poured in from the upper portion of the slag cooler, evenly flow downwards, and sweep past a heat exchange plate tube, and heat is transferred to water in the plate tube through a plate wall or tube wall. Cold water flows in a channel in the plate or tube, cross flow or adverse flow is formed between the cold water and the flowing direction of the furnace slag, and entering water is heated to form steam to be discharged out from an upper header. The cooled slag particles are discharged from an outlet in the lower portion. The flowing speed of the slag particles can be adjusted according to the louver type furnace slag outlet baffle at the lower portion of the slag cooler. The water cooling type slag cooler is simple and compact in heat exchange structure, running operation is convenient, the waste heat using efficiency is higher, and secondary losses of heat are avoided.

To solve problems concerning the unevenness in shape or size of a biomass fuel produced and concerning fluctuations in the degree of drying/carbonization of the biomass fuel caused by the kind of rawbiomass materials. A device comprising: a combustion furnace 12; a rotating drum 14 which includes a feed part 50 for raw biomass materials and a discharge part 52 for a biomass fuel 32 and in which drying/carbonization is conducted with the heat of the discharge gas generated in the combustion furnace 12; a tilting means 16 for tilting the rotating drum 14; a flue cover 18 for forming, between itself and the rotating drum 14, a flue for the discharge gas generated in the combustion furnace 12; a processing line 20 for making the shape and size of the biomass fuel uniform; and a return line 22through which some of the biomass fuel is returned to the combustion furnace 12. The feed part 50 is equipped with a screw conveyor 80 which feeds the raw biomass materials to the inside of the rotating drum 14 while rotating at the same speed as the rotating drum 14.

The invention discloses a vertical photocatalytic oxidation device with a drainage water discharge function. The vertical photocatalytic oxidation device comprises a support frame, wherein one end ofthe support frame is provided with a climbing ladder; an overhaul platform is arranged at the outer side of the top of the support frame; a casing is arranged in the middle position of the top of thesupport frame; an air inlet is formed in the bottom of the casing; an exhaust opening is formed in the top of the casing; a separation plate is arranged between the tops of the inner side of the casing; baffle plates are hinged to the inner side of the casing and the separation plate. A rotating rod is installed; through the matched use of positive screw threads and reverse screw threads on the rotating rod with the threaded holes in the first slide block arranged in the first slide groove, the first slide block can be simultaneously driven to move by the rotation of the rotating rod; throughthe connection with the second slide block through the connecting rod on the first slide block, the device can regulate the opening size of the baffle plate in the use process; the gas exhaust speed is controlled; the dwell time of the gas in the device is regulated; the use effect of the device is improved.

The invention provides a multi-dimensional electrolysis sewage treatment process used for treatment of high-concentration organic matter and high-salinity wastewater in the industries such as chemical engineering, printing and dyeing, pharmacy, papermaking, oil fields, food processing and refuse leachate. The process is characterized by including the steps of mixed regulation, catalytic activation, cation and anion separation, electrolytic oxidation reduction and filtering separation; treated water is drained after it is detected that the treated water reaches the standard, due to the fact that organic matter is completely decomposed, no sludge residue is left, a multi-dimensional electrolysis sewage treatment device is adopted for electrolytic catalytic oxidation, and removal of organic matter and NH3-N of multi-dimensional electrolysis in a catalytic electrolysis method is achieved through a direct oxidation effect of an anode and an indirect oxidation effect of a catalyst solution. The process has the advantages of being low in operating cost, small in occupied area, small in amount of generated sludge, low in disposal cost of the sludge and the like.

The invention belongs to the field of chemical engineering, and discloses a method for synthesizing an acetone condensation compound from acetone and hydrogen. The method comprises the following steps: mixing acetone and hydrogen, introducing into a supergravity rotating bed, contacting a catalyst bed layer arranged on the rotor of the supergravity rotating bed, and reacting to obtain a liquid-phase component containing the acetone condensation compound and a gas-phase component, wherein the residence time tau of the liquid-phase component in the catalyst bed layer is less than or equal to 20s. According to the invention, the supergravity rotating bed reactor is introduced into the reaction for one-step synthesis of the acetone condensation compound from acetone and hydrogen, so that theretention time of the liquid-state product in the catalyst bed layer is remarkably shortened, the phenomenon of carbon deposition and coking in the catalyst along with the prolonging of the reaction time is relieved/eliminated, the service life of the catalyst is prolonged, and the conversion rate of reactants and the selectivity of the product are changed.

The tower type pre-polycondensation reactor comprises a tower body, a material inlet and a material outlet are formed in the top and the bottom of the tower body respectively, a vacuum pipe with a plurality of first vacuum ports is arranged at the central axis in the tower body, and a vacuum pipe outlet is formed in the side wall of the tower body; a plurality of tower trays are arranged between the vacuum pipe and the tower body, baffle plates are arranged on the tower trays, the heights of the baffle plates are gradually increased or decreased from the position close to the tower body to the position far away from the tower body, and the height change directions of the adjacent upper and lower baffle plates are opposite; and each layer of tower tray is provided with a downcomer, and the downcomer is positioned at the lowest baffle plate in each layer. According to the invention, materials are baffled/overflowed back and forth on each layer of tower tray, and liquid film flow can be realized at the overflow port, so that the gas-liquid contact area is increased, and mass transfer evaporation of EG is facilitated; and the materials flow downwards in an annular waterfall manner on the inner sides of odd-numbered layers/the outer sides of even-numbered layers, so that the contact area between the materials and vacuum is quickly updated, the mass transfer efficiency is greatly improved, and the polymerization degree is greatly increased.

The invention discloses an air filtering structure for a negative pressure isolation tent. The air filtering structure comprises suction discs, an air filtering assembly and a discharging pipe, wherein the suction ends of the suction discs communicate with the tent so as to reduce the air pressure in the tent, and negative pressure is formed in the tent; the suction discs can suck air in the tent into the air filtering assembly and discharge the air through the discharging pipe; the two suction discs are symmetrically connected to the air filtering assembly; and the air filtering assembly comprises a high-temperature sterilization assembly, a middle-section sterilization assembly and a germ adsorption assembly, wherein the two suction discs suck the air in the corresponding tent and sequentially convey the air into the corresponding high-temperature sterilization assembly and the middle-section sterilization assembly, and the two strands of air share one germ adsorption assembly and are discharged through the discharging pipe, so that the reliability of overall sterilization is improved.

The invention provides a system used for processing domestic sewage with ecological technology, and belongs to the technical field of sewage treatment. The system used for processing domestic sewage with ecological technology comprises a sedimentation basin, an aeration tank, a constructed wetland, and an ecological pool; the constructed wetland comprises an internal pool and an external pool; theexternal pool is provided with a filtering groove; an opening end of the filtering groove of the external pool is fixedly provided with an installation frame; the external wall of the lower end of the internal pool is fixedly arranged on the installation frame; the internal pool is provided with a purifying groove; the aeration tank is provided with an aeration groove; the aeration groove and a first filtering groove are connected through a water inlet pipe; the side wall of the aeration tank is provided with a cavity; the internal wall of the aeration tank is provided with a gas outlet communicated with the cavity; the sedimentation basin is provided with a sedimentation groove; a separating plate 3 is arranged in the sedimentation basin to divide the sedimentation groove into a first sedimentation groove and a second sedimentation groove; the ecological pool is provided with an ecological groove; and submerged plants are planted in the ecological groove. The system is capable of realizing purifying of domestic sewage with higher efficiency.

The invention relates to a hydrogenation method quickly for circulating fluidized silicon tetrachloride, and method comprises the following steps of: mixing pre-treated silicon power into a hydrogenation rector from the middle, wherein the pressure is 1-5MPa, and charging mixed gas of hydrogen and silicon tetrachloride with the preheating temperature of 400-600DEG C (the molar ratio is 1:(1-5)) into the hydrogenation rector from the bottom; in the hydrogenation rector, wherein the macroscopic tolerance is 0.2-4m/s; quickly fluidizing the silicon power; and carrying out the gas-solid separation on the product gas and the silicon power flowing out of the top of the reactor by a first-stage cyclone separator or a multi-stage cyclone separator, and reflowing the silicon power into the reactor by a circulating pipe, wherein the product gas passes through a waste heat recovery system, a condensation system and a separation system, the trichlorosilane is taken as a hydrogenated product, and the separated silicon tetrachloride and hydrogen can be recycled. The method has the advantages that the gas and the solid can be sufficiently contacted with each other, the heat and the mass can be quickly transferred, and the silicon tetrachloride is high in conversion per pass; a bed layer is even in temperature field, and the product is stable in quality; and the hydrogenation rector of a circulating fluidized bed is high in operation elasticity, high in capacity, and easy for realization of the large-scale production.

The invention discloses a drying apparatus difficultly adhering to a device and specially used for producing reclaimed waste asphalt. The apparatus comprises a hot-blast stove and a drying furnace connected with the hot-blast stove, a slide way is arranged in the drying furnace, the inner wall of the drying furnace is provided with heating radiators, the cross section of the drying furnace is rectangular, the slide way is two groups of relatively-interlacing downward-tilting slide plates fixed on the inner wall, and the heating radiators are positioned on the inner wall below the slide plates. The slide way adopts two groups of the relatively-interlacing downward-tilting slide plates, so the contact time of waste asphalt with the slide plates is shortened, thereby the adhesion of the waste asphalt to the slide way is difficult.

The invention discloses a wet-type chemical desulfurization regeneration tank which comprises a reaction tank, a sealing cover is arranged at the top end of the reaction tank, a plurality of uniformly distributed supporting legs are arranged at the bottom end of the reaction tank, an inner tank is arranged in the reaction tank, and the inner tank is connected with the reaction tank through a plurality of uniformly distributed supporting rods. The wet-type chemical desulfurization regeneration tank has the beneficial effects that through the arrangement of the connector and the angle adjusting pipe internally provided with a third spring, deformation is facilitated, and the folding phenomenon cannot occur after deformation; meanwhile, a threaded rod, a limiting sleeve, a limiting rod, a disc and supporting pieces are arranged, so that the angle adjusting pipe can deform and adjust the angle according to the diameter of the inner tank, rotational flow is formed in the water inlet process, and the stirring effect is improved; by arranging a folding pipe internally provided with a first spring, a second absorption alkali liquor inlet pipe is convenient to mount and dismount; and meanwhile, the connecting rod and the threaded sleeve are arranged, so that the height of the second absorption alkali liquor inlet pipe is convenient to adjust, and the height of the first absorption alkali liquor inlet pipe is not affected.