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131results about How to "Improve mixing uniformity" patented technology

SCR (Selective Catalytic Reduction) urea solution mixer

The embodiment of the invention discloses an SCR (Selective Catalytic Reduction) urea solution mixer which comprises an outer-layer tube and an inner-layer tube, wherein the inner-layer tube is arranged inside the outer-layer tube; side wall air outlet holes through which air flows out are formed in the side wall of the inner-layer tube; outer-layer tube air outlet holes through which air flows out are formed in the side wall of the outer-layer tube; the side wall air outlet holes and the outer-layer tube air outlet holes are formed in a staggered manner. According to the SCR urea solution mixer which is disclosed by the invention, as the side wall air outlet holes in the inner-layer tube and the outer-layer tube air outlet holes in the outer-layer tube are formed in the staggered manner, and air needs to flow to another side of the inner-layer tube to flow into SCR through outer-layer tube air outlet holes in the outer-layer tube after flowing outside the side wall air outlet holes in the inner-layer tube, the air flowing situation between the inner-layer tube and the outer-layer tube is relatively complex, the mixing uniformity of a urea solution is further improved, sufficient utilization of the urea solution is promoted, and the purpose of preventing urea from excessive precipitation is finally achieved.
Owner:WEICHAI POWER CO LTD

Longitudinal-vortex-type ammonia-injection mixing arrangement used for SCR denitration system

The invention discloses a longitudinal-vortex-type ammonia-injection mixing arrangement used for an SCR denitration system. The mixing arrangement comprises static mixing units including fins and substrate flats and ammonia injection pipes provided with ammonia injection holes. The ammonia injection pipes are vertical to a flow direction of flue gas and pass through gas duct arrangement in an SCR denitration system. One static mixing unit corresponding to one ammonia injection hole is arranged. The injection direction of the ammonia injection holes and the flow direction of flue gas coincide or have included angles of 0-90 degrees. The substrate flats are vertically fixed on the ammonia injection pipes, and the fins are fixed on the substrate flats. The fins and the substrate flats have included angles of 30-90 degrees, and the attack angles between the fins and the flow direction of flue gas is more than 0 degree and is in a range of 0 to 60 degrees. Each fin is correspondingly arranged on the ammonia injection pipes in a downstream direction of the flow direction of flue gas. Ammonia enters the gas duct through the ammonia injection holes, and when ammonia and flue gas flow through the fins, a longitudinal vortex for secondary entrainment mixing is formed. The arrangement is good in mixing effect and uniform in ammonia nitrogen mixing, the distance required for uniform mixing is shortened, and the space utilization efficiency is increased.
Owner:XI AN JIAOTONG UNIV

Material conveying device

The invention provides a material conveying device. The material conveying device comprises a mixing room, a rotary drum, a driving structure, at least two material conveying pipes, a discharge opening and mixing blades, wherein the mixing room has a mixing space and a discharge hole is formed in the bottom of the mixing room; the rotary drum is rotationally arranged on the mixing room and is provided with a first section positioned inside the mixing space and a second section stretching out of the mixing space upwards, and a rotary drum inner cavity is arranged inside the second section and a part of the first section, connected with the second section; the driving structure drives the rotary drum to rotate by a connecting structure; the at least two material conveying pipes are used for conveying raw materials into the rotary drum inner cavity through the connecting structure; the discharge opening is used for conveying the raw materials to the mixing space from the rotary drum inner cavity; and the mixing blades are arranged on the first section, are opposite to the discharge opening up and down and are used for uniformly mixing the raw materials discharged through the discharge opening. According to the material conveying device, by controlling the quantity of the raw materials conveyed into the material conveying pipe, the quantity of finished products discharged from the discharging opening can be controlled, so that special containing equipment and control device are not needed, and the equipment cost can be reduced.
Owner:汪振朴

Polymer-reinforced prestressed concrete cylinder pipe molding technology

The invention provides a polymer-reinforced prestressed concrete cylinder pipe molding technology, and belongs to the technical field of pipeline manufacturing. The polymer-reinforced prestressed concrete cylinder pipe molding technology comprises the following steps that (1) manufacturing of a lining mold is conducted, wherein circumferential prestressed wires are wound around a concrete pipe core with a steel cylinder, a PCCP semi-finished product is formed and directly serves as the lining mold, and a reinforcing net is prefabricated in the concrete pipe core; (2) pretreatment of an outer mold is conducted, wherein a release agent coats the inner wall of the outer mold; and (3) construction of a pouring structure is conducted, wherein the lining mold, the reinforcing net and the outer mold are combined in sequence from inside to outside so as to form the pouring structure, polymer concrete is poured into the pouring structure, the outer mold is removed after molding is accomplished,and therefore a polymer-reinforced prestressed concrete cylinder pipeline is obtained. The polymer-reinforced prestressed concrete cylinder pipe molding technology is simple, and the manufactured polymer-reinforced prestressed concrete cylinder pipeline is excellent in performance and has the advantages of being high in sealing performance, strength and anti-permeability and resistant to corrosion.
Owner:江苏致乐管业科技有限公司

Preparation method of pearl layer powder-wild chrysanthemum cream powder hypotensive tablet

The invention discloses a preparation method of a pearl layer powder-wild chrysanthemum cream powder hypotensive tablet. The preparation method comprises the following steps of 1, carrying out equivalent incremental mixing of hydrochlorothiazide and pearl layer powder to obtain mixed powder, 2, dissolving clonidine hydrochloride by ethanol having a volume concentration of 70% to obtain a solution, uniformly mixing the solution and the mixed powder obtained by the step 1, and repeatedly stirring to obtain a mixture, 3, drying the mixture obtained by the step 2 at a temperature of 40 to 60 DEG C and crushing the dried mixture into powder, 4, adding wild chrysanthemum cream powder and rutin into the powder obtained by the step 3, mixing, and carrying out granulation, and 5, carrying out tabletting and coating. Clonidine hydrochloride is dissolved by ethanol and then is uniformly mixed with hydrochlorothiazide and pearl layer powder; the mixture is dried, crushed and is uniformly mixed with wild chrysanthemum cream powder and rutin; and the mixture is processed into particles. The preparation method can effectively prevent that clonidine hydrochloride is coated by wild chrysanthemum cream powder, improve mixing uniformity and improve bioavailability of the pearl layer powder-wild chrysanthemum cream powder hypotensive tablet.
Owner:TIANSHENG PHARMA GROUP

Silicone resin composite material as well as manufacturing method and application of silicone resin composite material and lighting device

The invention relates to a silicone resin composite material. The silicone resin composite material comprises nano-fluorescent powder, nano quantum dots and colorless and transparent silicone resin, wherein nano-fluorescent powder and nano quantum dots are uniformly dispersed in colorless and transparent silicone resin, the silicone resin composite material is in a cured structure, nano-fluorescent powder and nano quantum dots are the luminescent material and the silicone resin is a first packaging material. The invention also discloses a manufacturing method of the silicone resin composite material, a lighting device comprising the silicone resin composite material, and an application of the silicone resin composite material as the lighting device. The silicone resin composite material disclosed by the invention has the beneficial effects that by virtue of mixing the nanoscale fluorescent powder with nanoscale quantum dots, the silicone resin composite material prepared by the invention has an improved mixing uniformity and good luminescence property and is suitable for a photoelectric device or an LED solid lighting device and the packaging of the photoelectric device or LED solid lighting device.
Owner:FLORY OPTOELECTRONICS MATERIALS SUZHOU CO LTD

Method for preparing 1,4-butane sultone by micro-channel reactor

The invention discloses a method for preparing 1,4-butane sultone by a microchannel reactor. A reaction device adopted by the method comprises the enhanced mass transfer type micro-channel reactor with a premixer and a micro-channel module, a first micro-pump and a second micro-pump are respectively connected with the premixer, the output end of the premixer is communicated with the feed end of the micro-channel module, the discharge end of the micro-channel module is connected to a reaction kettle, a discharge tube at the bottom of the reaction kettle is connected to a filter, and the filteris connected with a rectification kettle. An aqueous sodium sulfite solution and chlorobutyl acetate are respectively pumped into the premixer; a reaction solution enters the reaction kettle from thedischarge end of the micro-channel module, and undergoes reduced pressure dehydration, concentrated hydrochloric acid is added, and the obtained solution is refluxed and stirred; and the reaction solution in the reaction kettle is cooled, and then is filtered, and the obtained filtrate undergoes concentration, dehydration cyclization and rectification in the rectification kettle to obtain the finished 1,4-butane sultone. The method has the advantages of high reaction efficiency, good product quality, effective reduction of byproducts, and effective improvement of the molar yield.
Owner:ZHANGJIAGANG HICOMER CHEM CO LTD

Spraying-angle-adjustable pesticide liquid spraying device for landscape garden maintenance

The invention relates to the technical field of gardens, and discloses a spraying-angle-adjustable pesticide liquid spraying device for landscape garden maintenance. The problems of low spraying efficiency and high labor investment caused by small pesticide spraying range are solved. The spraying-angle-adjustable pesticide liquid spraying device comprises a base, a box body and moving wheels, the box body is arranged at the top end of the base, the moving wheels are arranged at the periphery of the bottom end of the base, a first motor is arranged in the middle of the top end of the box body, a stirring shaft located in the box body is arranged on an output shaft of the first motor, through holes sleeve outside the stirring shaft are formed in the bottom end of the base and the bottom end of the box body, a height adjuster located at the bottom end of the base is arranged at one end of the stirring shaft, and a mounting shaft is arranged at the bottom end of the height adjuster. According to the spraying-angle-adjustable pesticide liquid spraying device, a double-spraying mode is adopted, the spraying efficiency is effectively improved, meanwhile, the spraying angle is changed, the spraying range is effectively enlarged, and the working efficiency is greatly improved.
Owner:黄荣

High-efficiency mixer igniter used for pulse soot blower

InactiveCN101769539AImprove mixing uniformityNo carbon depositSolid removalExplosive combustion chamberSoot blowerAirflow
Disclosed is a high-efficiency mixer igniter which is used for a pulse soot blower, comprising a positioning end cover (1), a gas inlet pipe (2), a gas inlet pipeline (3), an upper distributing baffle (4), an inlet upper shield ring (5), an outer shell (6), an inlet lower shield ring (7), a shield ring (8), an affluence baffle (9), a gas collector (10), a shield ring (11), an outlet upper shield ring (12), a lower distributing baffle (13), an outlet lower shield ring (14), a gas outlet pipe (15), an igniter (16), a connection flange (17), a fuel gas outlet (18), and a mixer and the igniter are combined in a whole. The air inlet pipeline (3) and the gas collector (10) are arranged to form two channels which shatter airflow from the center to the surrounding when the airflow passes through and respectively impacts the upper damper (4) and the lower damper (13). Two ring airflow channels which are formed by the upper baffle (4) and the lower baffle (13) as well as the outer shell (6) are arranged. Two airflow channels of the gas collector (10) and the gas outlet pipe (15) have two airflow channels capable of driving air flow to flow to the center in centralization manner. The air inlet pipe (2) is connected by pipe threads, and the mixed air outlet (18) is connected by the flange. The installation positioning is positioned by the positioning end cover (1) and the flange (17).
Owner:BEIJING FANYUANXING SCI & TECH +1
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