CN202953832U - Venturi tube reactor - Google Patents
Venturi tube reactor Download PDFInfo
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- CN202953832U CN202953832U CN 201220583918 CN201220583918U CN202953832U CN 202953832 U CN202953832 U CN 202953832U CN 201220583918 CN201220583918 CN 201220583918 CN 201220583918 U CN201220583918 U CN 201220583918U CN 202953832 U CN202953832 U CN 202953832U
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Abstract
The utility model discloses a Venturi tube reactor. The Venturi tube reactor comprises a tube body, an air inflow nozzle cylinder, an air inflow connector, a liquid inflow connector and a liquid outflow connector. The tube body is provided with an installing hole for the air inflow nozzle cylinder, a locating groove is arranged inside the installing hole, the air inflow nozzle cylinder is provided with more than two nozzles with nozzle calibers of 3-5mm, and a locating column is arranged outside an opening of the air inflow nozzle cylinder. The liquid inflow connector and the liquid outflow connector are respectively arranged at the upper end and the lower end of the tube body, the liquid inflow connector is connected with a force pump, and the liquid outflow connector is connected with a reaction still. The force pump inputs slurry into the Venturi tube reactor for high-pressure grouting, the slurry is atomized for forming small liquid drops with tiny grain diameters, meanwhile, certain vacuum areas are formed on a kiln gas inlet, kiln gas is sucked into the Venturi tube reactor automatically, and carburizing reaction is carried out between the kiln gas and the slurry liquid drops. Inlet of the kiln gas does not need an air compressor, atomization effect can be regulated through the nozzle calibers, water outflow speed and the like, quality of products can be guaranteed, and the Venturi tube reactor can operate continuously and is simple and practical. Besides, industrialized application can be achieved easily, and good economic benefit can be obtained.
Description
Technical field
The utility model belongs to the chemical machinery technical field, relates to a kind of chemical reaction equipment, is specifically related to a kind of Venturi tube reactor.
Background technology
Calcium carbonate is a kind of white of wide material sources, nontoxic filler.Can obtain the high purity precipitated chalk of appropriate particle size and pattern by adjusting production technique.Precipitated chalk is widely used in the fields such as plastics, papermaking, rubber, viscose, coating and printing ink, not only plays the effect that increment is filled, cut down finished cost, and can also carry out functional modification to filled object.Especially nano-calcium carbonate, due to its less particle diameter, higher specific surface area and special surface treatment, have the incomparable high-performance of ordinary calcium carbonate.For plastics, there is the enhancing toughening effect, for rubber item, there is reinforcing function, can improve the sticking power of polymkeric substance for coating, improve capillary characteristic, for papermaking, printing and the optical property of paper can be improved, for seal gum and printing ink, its thixotropy can be effectively improved.
Carborization is a kind of common method of chemical preparation nano-calcium carbonate.It take fat lime stone as raw material, by calcining, obtains calcium oxide and carbonated kiln gas.Calcium oxide and water are digested by a certain percentage, generate calcium hydroxide suspension, then pass into the kiln gas after purifying treatment, reaction (carbonization) generates lime deposit, through dehydration, dry, pulverize and obtain the nano-calcium carbonate calcium product.What the nanometer grade calcium carbonate prepared both at home and abroad at present mainly adopted is exactly this carborization, and wherein carburizing reagent is step the most key in whole production process.The physicochemical environment of carburizing reagent is determining granularity and the crystalline form of process feature and the prepared nano-calcium carbonate of reaction.According to the way of contact of carbon dioxide and calcium hydroxide suspension, carborization can be divided into to intermittent type bubbling carbonizing method, batch type carborization, continuous multilevel spray carbonization and high-gravity carbonation method.
Multilevel spray carbonization technique in the exploitation of phase late 1970s, adopts a plurality of carbonating towers by white lapicide's industry company (Japan) usually continuously.Its step for preparing nano-calcium carbonate is: the suspension preparation after at first refining milk of lime becomes processing requirement concentration, add appropriate additive to mix fully, pump in the spraying gun of multistage spray carbonation top of tower, under the huge centrifugal action that emulsion produces at high speed rotating, the droplet that atomization is fine particle size; The kiln gas that then will contain carbonic acid gas is passed into by tower bottom, with gas distributor, that it is dispersed, with the droplet produced in tower, carries out instantaneous reverse contact, chemical reaction occurs and generate calcium carbonate.It is high, good in economic efficiency that this method is produced the nano-calcium carbonate ca efficiency, and can realize automatic mass production, and size ratio is easier to control, and can make the nano-calcium carbonate of high-quality stable.But this technique only has several uses at home, mainly due to the nozzle atomization problem, be difficult to solve, droplet dia is larger, affected the gas-to-liquid contact area, caused the droplets fall speed simultaneously, drop is too short at dwell time in the tower, utilization rate of carbon dioxide is reduced, and throughput is difficult to improve.In addition on the tower wall drop to adhere to rear flow velocity slow, easily make crystal particle diameter increase, and part fouling on the tower wall arranged, another part enters in product, thereby causes size distribution inhomogeneous.Want to improve the nozzle atomization effect, just must dwindle nozzle bore, easily result in blockage and aperture is too small, this contradiction not yet finds good terms of settlement.
Summary of the invention
The purpose of this utility model is the problem existed for existing Venturi tube reactor, and the nozzle of Venturi tube reactor is improved, and a kind of Venturi tube reactor that adapts to various inlet amount and intake velocity is provided.
The technical solution adopted in the utility model is as follows:
A kind of Venturi tube reactor, arrange and comprise body, nozzle of air supply cylinder, inlet suction port, liquid inlet joint and fluid joint; Described body arranges nozzle of air supply cylinder placement hole; The upper and lower both ends of the surface of described nozzle of air supply cylinder arrange sealing-ring, and are fixed by the inlet suction port spiral; Body arranges upper and lower two ends liquid inlet joint and fluid joint is set respectively, and liquid inlet joint connects powerful pump, fluid joint ligation still.
Above-described nozzle of air supply cylinder arranges plural nozzle, and nozzle diameter is 3-5mm.
Above-described nozzle of air supply cylinder arranges locating dowel in nozzle of air supply nozzle end outside, and its quantity equates with nozzle quantity.
Above-described nozzle of air supply cylinder placement hole arranges locating slot, and its quantity equates with nozzle quantity.
The principle of work of this Venturi pipe reactor:
During work, size and intake velocity requirement according to slurries, the nozzle of deployed nozzle of air supply cylinder 3, opening powerful pump is input into slurries in the Venturi tube reactor with certain speed, mixed serum sprays at the Venturi tube mesohigh, be atomized into the minimum drop of particle diameter, enter the certain vacuum zone of interruption-forming at kiln gas, automatically kiln gas is adsorbed into Venturi tube reactor and slurries drop and carry out a carburizing reagent simultaneously.
Advantage of the present utility model and positively effect:
(1) use the Venturi tube reactor of special manufacture, at the nozzle place, reaction solution is carried out to atomization, atomizing effect can and go out the regulation and control such as water speed by nozzle diameter.
(2) under the effect of Venturi tube reactor, passing into of kiln gas no longer needs air compressor, and its uninterrupted can go out water speed by nozzle equally to be regulated.
(3) after slurry spraying, moment reacts with adsorbing the kiln gas of coming in, and because the size droplet diameter of atomization is minimum, has greatly increased the solution-air contact area, has improved speed of reaction, thereby guarantees Nano particles of calcium carbonate super-refinement and homogenizing.
(4) effect of Venturi tube another one is effectively to reduce the temperature of reaction solution, thereby makes the carbonization process temperature all maintain all the time a more stable level, has further guaranteed the quality of product.
(5) Nano particles of calcium carbonate that prepared by present method is controlled between 40-80nm, cube, and specific surface area is greater than 25m
2/ g, without agglomeration, product performance are very excellent.Can move continuously and simple and practical, be easy to realize industrial applications.
The accompanying drawing explanation
Fig. 1: be structural representation of the present utility model.
Fig. 2: be nozzle of air supply bottom construction schematic diagram of the present utility model.
In figure, the implication of each label representative is as follows:
The 1-body; The 2-liquid inlet joint; 3-nozzle of air supply cylinder; The 4-inlet suction port; 5-fluid joint; 6-nozzle A; The 7-nozzle B; 8-nozzle C; 9-nozzle D; The 10-locating dowel.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described in detail.Be intended to help the reader understanding, can not form the restriction to the utility model practical range.
The setting of Venturi tube reactor comprises body 1, nozzle of air supply cylinder 3, inlet suction port 4, liquid inlet joint 2 and fluid joint 5; Body 1 arranges nozzle of air supply cylinder 3 placement holes, and placement hole arranges two locating slots; It is the nozzle of air supply cylinder 3 of 3mm and two nozzles of 5mm that nozzle diameter is set, 3 mouthfuls of end outsides of nozzle of air supply cylinder arrange two locating dowels 10, select nozzle of air supply cylinder that nozzle diameter is 3mm Shang Xia 3 both ends of the surface sealing-ring is set, and, to the placement hole of Huaihe River Venturi tube reactor, then with inlet suction port 4 spirals, fix; Body 1 arranges upper and lower two ends liquid inlet joint 2 and fluid joint 5 is set respectively, and liquid inlet joint 2 connects powerful pump, fluid joint 5 ligation stills.
During work, by CaCO
3Content be greater than 98.5% Wingdale 1050 ± 1 ℃ of temperature lower calcinations 3 hours unslaked lime; Unslaked lime and water 1:4 in mass ratio fully digest to obtain slaked lime slurry at 80 ± 1 ℃ of temperature; Lime white, through the screening slagging-off, is diluted with water to Ca (OH)
2Weight concentration is 13%; Slurries are added in reactor, regulate slurry temperature to 20 ± 1 ℃; Start stirring, open powerful pump, powerful pumping capacity Q=20m after 10 minutes
3/ h, lift H=25m, when slurries enter Venturi tube at nozzle diameter 3mm, after nozzle goes out water speed and reaches 30m/s and be atomized into the minimum drop of particle diameter, and suck kiln gas, controls to pass into the kiln gas that the carbonic acid gas volumetric concentration is 17% and carry out a carburizing reagent.Carburizing reagent liquid and excessive kiln gas continue to pass in stirred autoclave to stir and carry out the secondary carburizing reagent.And then with powerful pump, slurries are repeated to pump into the Venturi tube reactor and continue reaction, so circulation repeatedly, when reaction system PH is 7, stop carburizing reagent, make the nano-calcium carbonate slurries, the reaction times of whole carbonization process continued at 45 minutes, and after reaction finishes, the nano-calcium carbonate slurry temperature is in 45 ± 1 ℃ of scopes.
Stearic acid is dissolved in the warm water of 80 ± 1 ℃ and makes covering liquid, join in the nano-calcium carbonate slurries of 40 ± 1 ℃, stir, constant temperature is processed 1.5 hours, by the slurry filtered while hot, 85 ± 1 ℃ of warm air dryings, pulverize, can obtain required nano-calcium carbonate calcium product after sieving.This product median size is 48nm, and size distribution GSD is 1.58, specific surface area 26.2m
2/ g, be cubic, without agglomeration.With common multilevel spray carbonization method, compare, the method has greatly improved atomizing effect, has solved the lower problem of utilization rate of carbon dioxide, and good product quality, and equipment is relatively simple is invested littlely, consumes energy low, and easily operation is controlled.
The setting of Venturi tube reactor comprises body 1, nozzle of air supply cylinder 3, inlet suction port 4, liquid inlet joint 2 and fluid joint 5; Body 1 arranges nozzle of air supply cylinder 3 placement holes, and placement hole arranges three locating slots; It is the nozzle of air supply cylinder 3 of 3mm, 4mm and tri-nozzles of 5mm that nozzle diameter is set, 3 mouthfuls of end outsides of nozzle of air supply cylinder arrange three locating dowels 10, select nozzle of air supply cylinder that nozzle diameter is 5mm Shang Xia 3 both ends of the surface sealing-ring is set, and, to the placement hole of Huaihe River Venturi tube reactor, then with inlet suction port 4 spirals, fix; Body 1 arranges upper and lower two ends liquid inlet joint 2 and fluid joint 5 is set respectively, and liquid inlet joint 2 connects powerful pump, fluid joint 5 ligation stills.
During work, by CaCO
3Content be greater than 98.5% Wingdale 1050 ± 1 ℃ of temperature lower calcinations 3 hours unslaked lime; Unslaked lime and water 1:4 in mass ratio fully digest to obtain slaked lime slurry at 80 ± 1 ℃ of temperature; Lime white, through the screening slagging-off, is diluted with water to Ca (OH)
2Weight concentration is 15%, and slurries are joined in stirred autoclave of the present utility model, regulates slurry temperature to 15 ± 1 ℃; Start stirring, open powerful pump, powerful pumping capacity Q=40m after 10 minutes
3/ h, lift H=30m, when slurries enter Venturi tube at nozzle diameter 5mm, after nozzle goes out water speed and reaches 40m/s and be atomized into the minimum drop of particle diameter, control and pass into the kiln gas that the carbonic acid gas volumetric concentration is 25% and carry out a carburizing reagent.Carburizing reagent liquid and excessive kiln gas continue to pass in stirred autoclave to stir and carry out the secondary carburizing reagent.And then with powerful pump, slurries are repeated to pump into the Venturi tube reactor and continue reaction, so circulation repeatedly, when reaction system PH is 6.5, stop carburizing reagent, make the nano-calcium carbonate slurries, the reaction times of whole carbonization journey continued at 40 minutes, and after reaction finishes, the nano-calcium carbonate slurry temperature is in 50 ± 1 ℃ of scopes.
Stearic acid is dissolved in the warm water of 80 ± 1 ℃ and makes covering liquid, join in the nano-calcium carbonate slurries of 45 ± 1 ℃, stir, constant temperature is processed 3 hours, by the slurry filtered while hot, 100 ± 1 ℃ of warm air dryings, pulverize, can obtain required nano-calcium carbonate calcium product after sieving.This product median size is 60nm, and size distribution GSD is 1.51, specific surface area 25.5m
2/ g, be cubic, without agglomeration.With common multilevel spray carbonization method, compare, the method has greatly improved atomizing effect, has solved the lower problem of utilization rate of carbon dioxide, and good product quality, and equipment is relatively simple is invested littlely, consumes energy low, and easily operation is controlled.
Claims (4)
1. a Venturi tube reactor, arrange and comprise body (1), nozzle of air supply cylinder (3), inlet suction port (4), liquid inlet joint (2) and fluid joint (5); At body (1), upper and lower two ends are set liquid inlet joint (2) and fluid joint (5) are set respectively, liquid inlet joint (2) connects powerful pump, fluid joint (5) ligation still; It is characterized in that: described body (1) arranges nozzle of air supply cylinder (3) placement hole; The upper and lower both ends of the surface of described nozzle of air supply cylinder (3) arrange sealing-ring, and are fixed by inlet suction port (4) spiral.
2. a kind of Venturi tube reactor according to claim 1, it is characterized in that: described nozzle of air supply cylinder (3) arranges the nozzle more than 2, and nozzle diameter is 3-5mm.
3. according to the described a kind of Venturi tube reactor of claim 1 or 3, it is characterized in that: described nozzle of air supply cylinder (3) arranges locating dowel (10) in nozzle of air supply cylinder (a 3) mouthful end outside, and its quantity equates with nozzle quantity.
4. a kind of Venturi tube reactor according to claim 1, it is characterized in that: described nozzle of air supply cylinder (3) placement hole arranges locating slot, and its quantity equates with nozzle quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583918 CN202953832U (en) | 2012-11-08 | 2012-11-08 | Venturi tube reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583918 CN202953832U (en) | 2012-11-08 | 2012-11-08 | Venturi tube reactor |
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| Publication Number | Publication Date |
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| CN202953832U true CN202953832U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220583918 Expired - Fee Related CN202953832U (en) | 2012-11-08 | 2012-11-08 | Venturi tube reactor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921370A (en) * | 2012-11-08 | 2013-02-13 | 广西华纳新材料科技有限公司 | Venturi tube reactor |
| CN105820943A (en) * | 2015-05-29 | 2016-08-03 | 云南师范大学 | Multistage gas-liquid combined stirring Venturi tube-CSTR reactor |
| CN105923616A (en) * | 2016-04-13 | 2016-09-07 | 四川绵竹市盘龙矿物质有限责任公司 | Method for improving product crystallization in production technology of feed grade calcium hydrophosphate |
| CN109369421A (en) * | 2018-10-31 | 2019-02-22 | 中农发河南农化有限公司 | A kind of novel production process carrying out amidogen ether synthesis using high-pressure injector |
-
2012
- 2012-11-08 CN CN 201220583918 patent/CN202953832U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921370A (en) * | 2012-11-08 | 2013-02-13 | 广西华纳新材料科技有限公司 | Venturi tube reactor |
| CN102921370B (en) * | 2012-11-08 | 2014-09-10 | 广西华纳新材料科技有限公司 | Venturi tube reactor |
| CN105820943A (en) * | 2015-05-29 | 2016-08-03 | 云南师范大学 | Multistage gas-liquid combined stirring Venturi tube-CSTR reactor |
| CN105820943B (en) * | 2015-05-29 | 2018-07-17 | 云南师范大学 | A kind of multi-stage gas-liquid joint stirring Venturi tube-CSTR reaction units |
| CN105923616A (en) * | 2016-04-13 | 2016-09-07 | 四川绵竹市盘龙矿物质有限责任公司 | Method for improving product crystallization in production technology of feed grade calcium hydrophosphate |
| CN109369421A (en) * | 2018-10-31 | 2019-02-22 | 中农发河南农化有限公司 | A kind of novel production process carrying out amidogen ether synthesis using high-pressure injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangxi Tianyang Xintai Chemical Co., Ltd. Assignor: Guangxi Huana New Materials Science & Technology Co., Ltd. Contract record no.: 2014450000047 Denomination of utility model: Venturi tube reactor Granted publication date: 20130529 License type: Exclusive License Record date: 20140711 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Venturi tube reactor Effective date of registration: 20150826 Granted publication date: 20130529 Pledgee: Bank of Communications Ltd the Guangxi Zhuang Autonomous Region branch Pledgor: Guangxi Huana New Materials Science & Technology Co., Ltd. Registration number: 2015990000720 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190322 Granted publication date: 20130529 Pledgee: Bank of Communications Ltd the Guangxi Zhuang Autonomous Region branch Pledgor: Guangxi Huana New Materials Science & Technology Co., Ltd. Registration number: 2015990000720 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20191108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |