50results about How to "Improve mass transfer conditions" patented technology

The gas-solid reactor includes the main parts of main body, solid feeding port, tail gas exhausting port, stirring shaft, stirring blades, truncated cone solid discharger, turned conic gas distributor, screw conveyor, air sealed slide valve and baffle. The main body includes cylindrical upper part and conic lower part; the solid feeding port and the tail gas exhausting port are in the top of thereactor; the stirring shaft with fixed stirring blades is perpendicular to the central axis of the reactor; the inner wall of the reactor has one or several layers of baffles set; the solid discharger is in the lower part of the reactor; the gas distributor with homogeneously distributed holes is below the solid discharger; and the bottom of the reactor is connected to the screw conveyor; and theslide valve is set on the material discharging pipe of the screw conveyor.

The invention discloses an experimental device and method for treating antibiotic wastewater through an iron-carbon micro-electrolysis method. An iron-carbon micro-electrolysis device comprises a top cover, a stuffing region, a multihole plate supporting layer, a heating stick, a temperature controller and an aeration pipe. The invention further discloses a method for treating the antibiotic wastewater by using the device. The method comprises the following steps: injecting the antibiotic wastewater into an adjustment pool, adjusting pH to be 2.0 to 4.0, then injecting the antibiotic wastewater into a reactor through a water inlet of an iron-carbon micro-electrolysis reactor, and enabling a fan to blow air through an air inlet for aeration, wherein discharged water flows back into the reactor from the water inlet through a backflow pump; enabling the water to stay for 4 to 8 hours, and then discharging the water from a water outlet, thus completing treatment of the wastewater. The experimental device has the advantages of good treatment effect, long service life, simple operation and low cost.

The invention discloses an injection type spiral stirrer for molten iron desulphurization. A porous injection head (6) and spiral stirring blades (4) are arranged on a stirring shaft. All the stirringblades (4) are uniform in size and are distributed circumferentially evenly at intervals. The center of the whole stirring shaft achieves communication vertically to form a cavity-shaped straight-through injection pipe (7). The lower end of the straight-through injection pipe (7) forks at the porous injection head (6) to form a plurality of small injection conduits (8) in a through mode. All thesmall injection conduits (8) penetrate through the outer surface of the porous injection head (6), and thus a desulfurizer passes through the straight-through injection pipe (7) to be injected to theoutside of the porous injection head (6) in multiple directions from top to bottom. The stirring blades can enlarge the mixed area of axial and radial stirring of the desulfurizer, roll-suction circulation flow is increased, shear power consumption is lowered, and the stress conditions of the stirring blades are improved. The motion mode of desulfurizer vapor in molten iron can be further improved, thus the desulfurizer vapor does spiral rising motion, the dissolution degree is increased, and desulphurization is effective. The injection type spiral stirrer adapts to a long and thin type desulphurization molten iron ladle and meets the current desulphurization process requirements of stirring and injection.

The invention relates to one 3D electrode for direct borane fuel battery anode method, which is characterized by the following steps: processing filling bed electrode or multi-hole electrode as three dimensional anode and alkalinity liquid fuel, wherein, the cathode contacts oxygen, air and auricome agent and the middle ion exchange isolation film forms direct borane fuel battery system; borane fuel materials touching three dimensional electrode and alkalinity compound with materials feeding type as through or back entering type.

The invention provides an efficient molten iron desulphurization spray gun which comprises a guide pipe and a nozzle, wherein one end of the guide pipe is an immersing end which stretches into a ladle, and the guide pipe is immersed under the molten iron liquid level if being used; the other end of the guide pipe is located out of the ladle and is separately connected to a magnesium source and a pneumatic air source; the nozzle is an arc-shaped pipefitting and is connected to the outlet of the immersing end of the guide pipe for spraying magnesium steam out, so that magnesium steam moves spirally in the molten iron. The efficient molten iron desulphurization spray gun adopts the arc-shaped nozzle, so that particle magnesium rotates in the molten iron, and the magnesium ascends spirally inthe molten iron under the action of buoyancy force; under the same deep desulphurization condition, the contact time of the magnesium steam and the molten iron is prolonged greatly, and meanwhile, high pressure nitrogen carrying the magnesium steam ascends spirally to play a certain stirring role in the molten iron, too, so that the transfer speed of the magnesium steam is improved, the solubilityof magnesium is improved, and the desulphurization efficiency is further improved.

The invention discloses a treatment method applied to chemical industrial wastewater. The treatment method comprises the following treatment steps of (a) chemical industrial wastewater pretreatment, (b) biochemical treatment of chemical industrial wastewater and (c) physical treatment of chemical industrial wastewater. According to the treatment method, the chemical industrial wastewater is sequentially subjected to the chemical industrial wastewater pretreatment, the biochemical treatment of chemical industrial wastewater and the physical treatment of chemical industrial wastewater, and the chemical industrial wastewater reaching the discharge standard is obtained. The treatment method is especially suitable for treatment of organic chemical industrial wastewater having strong biological toxicity and poor biochemical properties and can deeply treat chemical industrial wastewater, the harmful matter content in the treated wastewater is reduced to the most degree, the lower treatment degree is avoided, and accordingly the problem that treated wastewater still cause large environmental pollution is solved. In addition, in the wastewater treatment process, all links can be performed in order, the treatment method is simple in structure, scientific, convenient, strong in pertinence, high in automation degree, low in actural application cost, advanced in technology and good in treatment effect, and the chemical industrial wastewater treatment problem is well solved.

The invention relates to the field of anaerobic reactors, and discloses an anaerobic reactor for sewage treatment. The anaerobic reactor comprises a tank (1), a sewage inlet pipe (2) arranged on one side of the tank (1), an aerating pipe network (3) arranged on the bottom of the tank (1), and a methane gathering area (4) located on the top of the tank (1), anaerobic activated sludge for degradingorganic pollutants in sewage is arranged in the tank (1), and the methane gathering area (4) is communicated with the aerating pipe network (2) through a methane return pipe (5). The anaerobic reactorutilizes methane return to enhance the mass transfer condition in the anaerobic reactor, consequently, the shape of the anaerobic reactor can be designed to be short in order to realize heat preservation, and moreover, high treatment efficiency can be kept as well.

The invention discloses an adding method of antimony in the smelting process of antimony-containing steel. The adding method comprises the steps that an aluminium alloy and an antimony alloy are put into a steel packing tin; then the steel packing tin is heated to 700-900 DEG C through a heating method, and heat preservation is conducted for 0.5-2 h, and thus the two alloys in the packing tin are molten, but the steel packing tin is not molten; in the converter tapping process, the steel packing tin containing the liquid aluminium alloy and the liquid antimony alloy is added into liquid steel in a ladle, the steel packing tin is molten by the liquid steel, and the liquid aluminium alloy and the liquid antimony alloy are fused into the liquid steel; and the mass ratio of the antimony alloy to the aluminium alloy is 1:1-4:1. According to the adding method, volatilization of antimony and antimony compounds can be reduced.

The invention discloses novel industrial wastewater treatment equipment. The novel industrial wastewater treatment equipment structurally comprises an equipment main body, a water inlet pipe, a motor,a control box, a water pipe structure, an adsorption precipitation device, a plug-flow aeration device and a temperature induction connection mechanism, wherein the water inlet pipe is vertically connected to the rearmost part of an upper end surface of the equipment main body; the adsorption precipitation device vertically penetrates through the leftmost part of an inner cavity of the equipmentmain body and is interpenetrated with the inner part of the water inlet pipe; the left half part of the plug-flow aeration device is mechanically connected to the middle part of an inner bottom surface of the adsorption precipitation device. According to the novel industrial wastewater treatment equipment disclosed by the invention, parts including the plug-flow aeration device, the temperature induction connection mechanism and the like are mutually matched, so that the temperature of industrial wastewater flowing through an adsorption precipitation part of the equipment can be detected in anindustrial wastewater treatment process, and mass transferring conditions of pollutants in a water treatment process are enhanced; a condition that water temperature is too high so that the activityof sludge is influenced is avoided; the industrial wastewater treatment effect of the equipment is ensured and the stable performance of the equipment is effectively improved.

The invention belongs to the field of additive preparation and particularly relates to a preparation method of a modified biomass iron ore sintering additive, in particular to a preparation method ofa modified biomass additive capable of lowering exhaust emission in production of iron ores and improving the iron ore sintering quality. The preparation method comprises the following steps of step 1, crushing a biomass material, and putting the crushed biomass material in an industrial microwave oven for modification treatment; step 2, spraying the treated biomass material with a Ca2+ mother liquor; and step 3, fully and uniformly mixing the materials, performing continuous pressing for 1-2mins under the effect of pressure of 20Mpa, and preparing massive particles with the particle size being 8-12mm to obtain the modified biomass additive. The technical scheme of the invention has important significance of reasonably utilizing clean energy, increasing the utilization ratio of resources and promoting emission reduction and benefit increase of the sintering industry.

The invention discloses a biological rotating disc sheet capable of improving a biofilm culturing amount. The biological rotating disc sheet comprises a disc-shaped framework of a hollow-out structureand a net-shaped disc surface arranged on the disc-shaped framework. Three-dimensional elastic filler is fully distributed on the net-shaped disc face, and the disc-shaped framework is filled with polyurethane sponge filler. According to the biological rotating disc provided by the invention, the biofilm culturing rate of the disc sheet is increased, and the defects that the biofilm culturing amount of an anoxic layer is low, and a biofilm is not easy to be implanted, easy to agglomerate, not easy to be stripped and the like are effectively improved. According to the invention, different fillers are utilized to create a proper environment for aerobic bacteria and anaerobic bacteria on the same disc sheet, so that the growth of biological membranes of an aerobic layer and an anoxic layer is facilitated, the membrane forming rate is greatly improved, and biochemical organic pollutants in water are efficiently treated.

The invention provides a method for treating a vanadium-containing waste catalyst. The method comprises the following steps of, A) carrying out ball-milling on the deoiled waste catalyst to obtain a powdery waste catalyst; B) mixing the powdery waste catalyst to obtain a mixed material; C) granulating the mixed material, and drying to obtain mixed material particles; and D) cooling and solidifying the mixed material particles, and roasting in a fluidized bed furnace to obtain sodium modified clinker. According to the method, sodium salt roasting in the fluidized bed furnace is realized, the contact between a sodium salt additive and the vanadium-containing waste catalyst and the contact between cold solid particles and air are strengthened, the chemical reaction kinetic conditions of sodium salt roasting are improved, the leaching rate of vanadium in the sodium salt clinker is increased, and the vanadium leaching rate of the sodium salt clinker can reach 95% or above; the problems that the temperature of a rotary kiln is not easy to control and the rotary kiln is easy to knot are solved, and organization and implementation of production are facilitated; and during sodium salt roasting, self-heating generated by oxidation of carbon and sulfur in the waste catalyst is utilized, so that the production cost is reduced.

The invention discloses a biological fluidized bed reaction zone process, relates to the technical field of biological fluidized beds, and in particular relates to a biological fluidized bed reactionzone process which comprises the following steps: a) selecting a proper granular material to construct an original BFB biological membrane, wherein because BFB adopts granules or even powder filler, the surface area is large, higher microbial biomass can be maintained in a fluidized bed, and the microbial biomass is 40-50 g/L. According to the biological fluidized bed reaction zone process, ceramsite, rubber, plastic carriers and the like are used as microbial carriers, and air or pure oxygen with a certain flow rate is introduced, so that sewage, compressed air and the microbial carriers flowupwards in the up-flow zone and flow downwards in the down-flow zone to form hydraulic circulation; and organic matters and nutrient substances in the sewage are adsorbed, oxidized and decomposed byutilizing a biological membrane continuously growing on the surface of the carrier, so that pollutants in the sewage are removed.

The invention discloses a downward flow type denitrification and phosphorous removal expanded bed biological filter and a method for treating sewage by applying the same. The downward flow type denitrification and phosphorous removal expanded bed biological filter comprises a water distribution region, a filter screen plate, a floating ceramsite filter bed, a filter bed fluidization and buffering region, a filter-head filter plate, a water outlet region, a bottom water collection and gas distribution device and a water collection and gas distribution channel box, wherein the floating ceramsite filter bed is composed of crushed shale floating ceramsite arranged between the filter screen plate and the filter-head filter plate; the crushed shale floating ceramsite has an irregular shape and the density of water wetted particles is 0.95g/cm<3>+/-0.5g/cm<3>; shale ceramsite is coarse and hydrophilic so that biofilm colonization is easy to realize; backwashing is adopted so that the activity of a biofilm is easy to maintain, the de-mold is not liable to occur and a denitrification biological nitrogen removal function is prominent; after sewage is subjected to primary micro-flocculation in the water distribution region, phosphorous-containing floc has a deep penetration distance in an expanded filter bed gap and a phosphorous removal effect is facilitated; the crushed ceramsite and the relatively large filter bed depth ensure the phosphorous removal and filtering capability. By adopting the downward flow type denitrification and phosphorous removal expanded bed biological filter, the loss of a filtering water head of an expanded bed is small and a filtering material is easy to fluidize and is not hardened.

This invention relates to a tray for mass transfer absorption columns and rectification columns in the chemical industry. The tray includes a radial jetting pipe or a jetting hood, a tray plate, and the like. Ascending gas enters the jetting pipe or the jetting hood through ascending and descending gas passages, and is then jetted from jetting holes in a high speed to generate a large amount of vortexes artificially; after liquid is pushed by the gas to rotate by nearly a round, the liquid enters a tray of the next layer through a fan-shaped overflow pipe. The tray overcomes a plurality of disadvantages of existing trays, greatly increases the contact time and area of gas and liquid phases by utilizing the vertex function, and greatly increases the tray efficiency and the operation flexibility. A heat transfer device can be additionally arranged on the tray. The tray is applicable to pressurized and vacuum absorption columns and various distillation columns.

The invention discloses an ozonation-biochemical coupled water treatment method which comprises the following steps: sequentially carrying out front-end ozonation treatment and rear-end biochemical treatment on water to be treated, returning rear-end biochemical effluent to front-end ozonation inlet water, and carrying out flow return to circularly treat the water to be treated in an ozonation-biochemical system for multiple times. Due to the fact that the biodegradability of the to-be-treated water is improved to a certain extent in the ozonation stage each time, biodegradable ozonation products in each time are degraded in time in the biochemical treatment stage, and the synergistic coupling effect of biodegradability improvement of ozonation and low-cost biochemical mineralization is enhanced by controlling the biochemical effluent return ratio. According to the method, the treatment efficiency can be improved under the condition of the determined total ozone addition amount, the ozone consumption can be reduced under the condition of the determined removal rate, and the investment cost, the operation cost and the engineering land occupation of water treatment are reduced.