30results about How to "Fluidized state is good" patented technology

The invention belongs to the field of water treatment, and relates to a two-stage moving bed biomembrane reactor medium water treatment system. The two-stage moving bed biomembrane reactor medium water treatment system is characterized in that the whole process adopts a programmable PLC automatic control system; the main treatment structure is two-stage cascade connected moving bed biomembrane reactors; and the concrete process flow is as follows: domestic sewage or sewage with similar water quality enters a regulating pond through grates and then enters a first-stage MBBR reactor and a second-stage MBBR reactor in turn by pump lifting; and then the water is outputted into a depositing pond, enters a clear water pond and is reused for flushing toilet or as landscape water after cyclic ultraviolet sterilization. The two-stage moving bed biomembrane reactor medium water treatment system has the advantages that: 1 the system has good medium water treatment effects, stronger resistance to shock load and stable outputted water quality; 2 the system has simple and convenient operating management, a small floor area, convenient maintenance and little excessive sludge; and the system adopts the PLC automatic control system with high automatic degree; 3 the system adopts a mechanical aeration mode, thereby bringing about low energy consumption and good oxygenation performance without an independent blower; 4 the system adopts a cyclic ultraviolet sterilization mode without any medicament added during the whole process, thereby avoiding the secondary pollution; and 5 the system has a wide application range.

The invention discloses a white granulated sugar vibrated fluidized bed. The white granulated sugar vibrated fluidized bed comprises a main machine box, a vibration motor and a macroporous plate and a seashell-type pore plate, wherein the main machine box is of a hollow structure with a ventilation cavity, and a vibration bed is arranged at the upper part of the main machine box; the vibration motor is used for driving the vibration bed to vibrate in an upper and down slant direction, and the slant direction is the white granulated sugar advancing direction; the macroporous plate is arranged on the vibration bed and vibrates along with the vibration bed under the driving of the vibration bed, and multiple straight-through holes are formed in the macroporous plate and are communicated with the ventilation cavity; the seashell-type pore plate is arranged on the macroporous plate, multiple seashell-shaped raised seashell through holes are formed in the seashell-type pore plate and are two groups of seashell-shaped through holes which are arranged in a staggering manner, and the opening directions of the seashell-shaped through holes are vertical to each other; white granulated sugar to be fluidized is fed into the seashell-type pore plate. Materials in the white granulated sugar vibrated fluidized bed are at good mixing and boiling state under the effect of wind power, and as vertical surfaces are not provided with openings, the materials are unlikely to block the openings and leak below the bed.

The invention relates to a production method for polyurethane enveloped controlled release fertilizer. The production method comprises the following steps: preheating granulated fertilizer in a fluidized bed in a fluidizing state; atomizing liquid paraffin, and pretreating the surface of the granulated fertilizer; mixing polyatomic alcohol and isocyanate in a nozzle, atomizing the mixture fast, and spraying the mixture onto the surface of the granulated fertilizer; controlling material adding speeds to ensure that polyurethane reaction can be fulfilled fast; adding liquid paraffin and carrying out surface anti-sticking treatment after the filling of reaction materials. According to the invention, the fluidized bed is adopted as enveloping equipment, polyatomic alcohol and isocyanate are used for spraying and enveloping after being premixed, and the adding speeds are regulated in a matched manner, so that the whole enveloping reaction process is fast and continuous. The production method can improve the polyurethane enveloping efficiency to a relatively large extent, and ensure relatively stable and reliable quality of the enveloped fertilizer due to continuous reaction.

The invention provides a fluidizing gas automatic regulating powder feeding device which comprises a powder bucket, a valve for controlling the input pressure and flow rate of fluidizing gas, a sensor used for monitoring the powder level in the powder bucket, a controller for controlling the actions of the valve according to the data of the sensor and alarm equipment; wherein, the sensor is electrically connected with the controller which is electrically connected with the valve and the alarm equipment. The controller controls the flow rate and the pressure of the fluidizing gas input by the valve according to the information of the height of the powder level obtained by the sensor, and dynamically regulates the height of the powder level in the powder bucket. When height of the powder level exceeds the upper limit or the lower limit preset by the controller, the controller drives the alarm equipment to give the alarm, so that the powder feeding device is avoided being damaged. According to the invention, full-automatic regulation of powder feeding can be realized, thus saving manpower and materials, reducing the consumption quantity of the fluidizing gas; in addition, the best fluidizing effect can be provided under the conditions of different powder levels.

The invention relates to a three-plasmid whole sealing environmentally friendly vibration fluidized bed dryer which is suitable for drying powder material of regular shape such as Laroflex MP with granularity ranging from 50mu m to 5000mu m. The drier comprises a foundation (9), a lower housing (13), a fluidized bed body (6), an upper housing (18) and a bag type dust collector (24); wherein the lower housing (13) is supported on the foundation (9) by a slantly arranged plate spring (12), a case type vibration exciter (14) is arranged at the front end of the lower housing (13), the fluidized bed body (6) is arranged above the lower housing (13) and internally provided with a hood-shaped fluidized bed plate (7), the upper housing (18) is arranged above the fluidized bed body (6) and internally provided with a plurality of groups of bag type dust collectors (24). An air-reserve tank (24.6) is arranged outside the upper housing (18), a plurality of air branch pipes (24.3) are internally arranged in the air-reserve tank (24.6), wherein each air branch pipe (24.3) is provided with a pulse solenoid valve (24.5), the bottom part thereof is provided with an air source hole (24.7). The drier of the invention features low energy consumption, high production efficiency, good operation stability and good uniformity of products.

The invention relates to a Black Locust particle/polyvinyl formal composite filler and a preparation method thereof, and belongs to the environmental engineering material field. The composite filler is obtained through compounding polyvinyl formal (PVFM) foam tissues as a matrix with a disperse phase; and the disperse phase comprises Black Locust particles having particle sizes of 60-120 meshes, and the Black Locust particles are obtained through peeling natural Black Locust particle branches, boiling in an alkali, and crushing. The preparation method of the composite filler comprises the following steps: dissolving polyvinyl alcohol in water, adding a surfactant and the Black Locust particles at 40-80DEG C, uniformly stirring, adding an acid for adjusting the pH value to 1-3, adding formaldehyde or paraformaldehyde, and carrying out high speed stirring while reacting for foaming the obtained system until the volume is not expanded; and dumping the obtained system to a foam die, and carrying out heat insulation curing at 50-65DEG C for 10-24h. The composite filler provided by the invention has the advantages of high biocompatibility, superior film hanging performance, and maintenance of many excellent characteristics of the PVFM, such as low density, high specific surface area, high poriness, good elasticity, wear resistance, corrosion resistance and the like.

The invention discloses a biological pretreatment system and method applicable to river type source water and the method belongs to the technical field of water treatment. The biological pretreatmentmethod applicable to river type source water does not require new construction of structures, does not occupy land and is an in-situ pretreatment method. Source water flows into a filler zone after natural sedimentation and makes full contact with filler for reaction under the dual action of natural flow state and microporous aeration of water, the biodegradability of the water is improved, the concentration of ammonia nitrogen and COD in the water can be effectively reduced, finally, the water flows into a wetland plant area, and pollutants in the source water are further reduced under the actions of assimilation, absorption and conversion of plants-organisms. The method has the advantages of low capital construction investment, implement simplicity, stable operation, significant effectsand the like.

The invention discloses a catalytic cracking reactivator test simulation method. The method includes mixing a gas 1 and a gas 2 online to enter a reactor; allowing the catalyst in a reaction tube to be in a fluidizing state through the mixed gas; allowing the mixed gas to react with the catalyst; performing gas-solid separation on the reacted gas; metering and/or analyzing the separated gas. The fluidizing principle is utilized, on the set operation condition, the catalyst can be maintained in a fine fluidizing state in the reaction tube, the reactivating process for catalytic cracking of the catalyst to reactivate in the industrial state can be simulated effectively, and the important significance is provided for predicting and indicating the actual industry process.

The invention discloses a sewage treatment device and a sewage treatment method. The sewage treatment device provided by the invention specifically comprises: an anaerobic fluidized bed having a firsthousing, the lower part of the first housing having a first water inlet port, the upper part of the first housing having a first water outlet port and a first gas outlet; a membrane filtration processing unit having a second housing, the lower part of the second housing having a second water inlet port and an aeration port, the upper part of the second housing having a second water outlet port and a second gas outlet, the second water inlet port being connected to the first water outlet port, a filter membrane component being arranged in the second housing, a water outlet port being arrangedat the top part of the filter membrane component, the water outlet port being connected to the second water outlet port, a return port being arranged at the side wall of the second housing, the returnport being arranged between the filter membrane component and the top part of the second housing, and the return port being communicated with the first water inlet port; and a biogas circulation unitrespectively connected to the first gas outlet and the second gas outlet, the unit being able to continuously supply gas to the aeration port. The sewage treatment device can reduce membrane pollution and reduce operating energy consumption.

The invention discloses an organic hazardous waste gasification and melting treatment system and method.The gasification and melting treatment system comprises a material matching and feeding system used for matching and conveying materials; the circulating fluidized bed gasification melting system comprises a circulating fluidized bed gasification furnace, a cyclone separator, a return feeder, a melting furnace and a slag dredger which are connected in sequence, the circulating fluidized bed gasification furnace is connected with the spiral feeding machine of the feeding system, and organic hazardous waste is subjected to pyrolysis gasification to obtain pyrolysis gas, carbonized coarse particles and carbonized fine particles; the cyclone separator separates the pyrolysis gas, the carbonized fine particles and the carbonized coarse particles, the carbonized coarse particles are returned to the circulating fluidized bed gasification furnace through the return feeder, and the pyrolysis gas and the carbonized fine particles enter the melting furnace; the melting furnace is used for carrying out oxygen-enriched combustion on the pyrolysis gas and melting the carbonized fine particles at a high temperature, and molten slag forms a glass body in a slag salvaging device; the waste heat boiler is used for recovering sensible heat of flue gas discharged by the melting furnace; and the flue gas purification system is used for purifying flue gas generated after sensible heat is recovered by the waste heat boiler.

The invention relates to a nickel catalytic packing for Fenton reactors, which belongs to the technical field of wastewater treatment. The nickel catalytic packing for Fenton reactors consists of a carrier and a catalyst loaded on the surface of the carrier, the carrier is natural volcanic rock, which has high mechanical strength and large specific surface area, and can ensure that the packing hasa good fluidized state when in use, and the attached catalyst layer on the surface of the natural volcanic rock is nickel oxide, which has strong catalytic capacity; when the packing is loaded into aFenton tower to treat wastewater, the addition amount of agentia can be greatly reduced, the treatment cost is low, moreover, reaction is rapid, the effluent effect is good, and economic benefit is obvious.

The invention discloses an anaerobic ammonia oxidizing bacteria sandwich-type multilayer immobilized bioactive filler, and preparation and an application thereof, and belongs to the technical field of water treatment. The bioactive filler is composed of two parts: embedding bodies and non-woven carriers; the embedding bodies and the non-woven carriers are in alternative arrangement; fiber yarns of the non-woven carriers and the embedding bodies are combined into a stable organic whole; an embedding liquid formed by mixing an anaerobic ammonia oxidizing bacteria suspension and a polyvinyl alcohol solution evenly coats the non-woven carriers, multiple layers of carriers are overlaid together, after boric acid secondary cross-linking immobilization, the embedding liquid is cured to form the embedding bodies, then a layered filler having a sandwich-like structure is prepared, and then the granular bioactive filler is prepared through cutting the layered filler. A sandwich-like layered structure formed by the non-woven fabrics and the embedding bodies improves the stability of the bioactive filler, the problem of poor stability of a filler prepared by a conventional anaerobic ammonia oxidizing bacteria immobilization method is solved, the concentration of anaerobic ammonia oxidizing bacteria on the filler is high, the treatment efficiency is high, and the bioactive filler has a good application prospect.