CN201200962Y - Continuous spray drying unit for the preparation of layered composites - Google Patents
Continuous spray drying unit for the preparation of layered composites Download PDFInfo
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- CN201200962Y CN201200962Y CNU2008200605875U CN200820060587U CN201200962Y CN 201200962 Y CN201200962 Y CN 201200962Y CN U2008200605875 U CNU2008200605875 U CN U2008200605875U CN 200820060587 U CN200820060587 U CN 200820060587U CN 201200962 Y CN201200962 Y CN 201200962Y
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- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
本实用新型涉及一种用于制备层状复合物的连续喷涂干燥装置，主要解决现有技术中喷涂、干燥过程无法连续进行，从而导致喷涂工序长、物料品质差、处理量小的缺点。本实用新型通过采用一种用于制备层状复合物的连续喷涂干燥装置，包括：溢流阀(4)、电磁阀(5)、浆料喷射装置(6)、空气加热器(12)、温度控制仪(13)、空气喷射装置(14)、转速控制仪(15)和滚筒(16)，其中溢流阀(4)的进口与原料浆料管道相连接，溢流阀(4)的出口与电磁阀(5)的进口相连，电磁阀(5)的出口与浆料喷射装置(6)相连，浆料喷射装置(6)的喷射口朝向滚筒(16)的开口方向；空气加热装置(12)的进口与空气管路相连，出口与空气喷射装置(14)相连，空气喷射装置(14)的喷射口开口朝向滚筒(16)的开口方向；温度控制仪(13)分别与空气加热器(12)及滚筒(16)相连；转速控制仪(15)与滚筒(16)相连的技术方案较好地解决了该问题，可广泛用于化工行业制备层状复合载体和涂层催化剂。
The utility model relates to a continuous spraying and drying device for preparing layered composites, which mainly solves the shortcomings of the prior art that the spraying and drying processes cannot be carried out continuously, resulting in long spraying process, poor material quality and small processing capacity. The utility model adopts a continuous spray drying device for preparing layered composites, comprising: overflow valve (4), electromagnetic valve (5), slurry injection device (6), air heater (12), Temperature controller (13), air injection device (14), rotational speed controller (15) and drum (16), wherein the inlet of overflow valve (4) is connected with raw material slurry pipeline, the inlet of overflow valve (4) The outlet is connected to the inlet of the solenoid valve (5), the outlet of the solenoid valve (5) is connected to the slurry injection device (6), and the injection port of the slurry injection device (6) faces the opening direction of the drum (16); the air heating device The inlet of (12) links to each other with the air pipeline, and the outlet links to each other with the air injection device (14), and the injection port opening of the air injection device (14) is towards the opening direction of the cylinder (16); the temperature controller (13) is heated with the air respectively The technical scheme that the speed controller (15) is connected with the drum (16) solves this problem better, and can be widely used in the chemical industry to prepare layered composite carriers and coating catalysts.
Description
Technical field
The utility model relates to a kind of spray equipment, particularly a kind of continuous spraying drying device that is used to prepare laminated composites.
Background technology
Being applied to chemical industry and oil refining process catalyst at present, quite a few is arranged is to adopt the loaded catalyst of noble metal as active component.Because noble metal costs an arm and a leg, so its content in catalyst is often lower.Discover that active component non-uniform Distribution in carrier can reduce the consumption of noble metal, improve the utilization rate of noble metal; Simultaneously, the catalyst of non-uniform Distribution also showed than the better activity of equally distributed catalyst, selectivity and life-span in many reactions.This wherein most important a kind of be exactly egg-shell catalyst, promptly active component concentrates on the surperficial thin-shell type on carrier top layer, is mainly used in the selectivity that improves the cascade reaction intermediate product or improves the rapid-action selectivity.In addition,, for some exothermic reactions, more help the transfer of reaction heat, to keep the stable of catalyst and to prolong life of catalyst because active component concentrates on the carrier extexine.In addition, the fast development of industry such as electronics industry, semi-conducting material, modern chemical industry, metallurgy, instrument, aerospace and atomic energy needs increasing high-purity gas, as high-purity hydrogen, nitrogen, oxygen, helium, argon gas, carbon dioxide etc.These gas cleanings are usually directed to dehydrogenation, deoxidation process, as removing the hydrogen impurity in nitrogen, methane, carbon monoxide, carbon dioxide and the various inert gas (nitrogen, xenon, krypton, neon etc.) in the presence of at oxygen, or in the presence of hydrogen, remove the oxygen impurities in the above-mentioned gas.And thin shell shaped noble metal catalyst also usually is used for dehydrogenation, the deoxidation process of high-purity gas.
At present, the industrial catalyst with non-uniform distribution of having widely applied has been introduced the heterogeneous bimetallic Pd-Au catalyst and the Pd-KOAc catalyst of ethylene process preparing vinyl acetate as patent CN1112241C and CN1428199.This catalyst is a spherical particle, and active constituent is the eggshell type non-uniform Distribution.Patent ZL02100598.2 has reported cleaning catalyst for tail gases of automobiles.This invention cleaning catalyst for tail gases of automobiles is first carrier with the cordierite honeycomb ceramic matrix, is second carrier with aluminum oxide coating layer slurries (salic, Rare Earth Lanthanum, cerium oxide, noble metal, transition metal and alkaline-earth metal).By with first carrier impregnation in the coating slurries, disposable spray finishing is made catalyst.Above-mentioned catalyst is shell shaped catalyst, promptly is a kind of laminated composites, and the preparation method all adopts spraying method.
Common spraying technology is slurry to be sprayed into tiny droplet and deliver to carrier surface and be attached on the coated article surface by different operation principles to form thin and cover with paint, lacquer, colour wash, etc. operating process uniformly.Four kinds of spraying methods are arranged at present: aerial spraying, airless spraying, mixed gas (air is auxiliary) spraying, centrifugal force spraying.No matter which kind of spraying method can't realize that all spraying is dry continuously.Owing to can't carry out continuous drying, the spraying slurry causes easily at carrier surface is stained with wall and self-adhesion, and catalyst surface is coarse, rate of wear is big thereby cause, and coating is peeled off from matrix easily, and the coating load capacity is low.
Existing spray equipment adopts the indirect mode for avoiding that coating quality is produced harmful effect, i.e. spraying earlier, and the back is dry.Therefore, installation cost and equipment occupation space are big, and operation is longer.Patent ZL01280058.9 has introduced a kind of multifunctional assembled spray equipment, and it utilizes heater to heat to container, and the coating that easy down curing of the interior low temperature of container or viscosity are strengthened melts or improves liquidity, and improves coating quality.But use this spray equipment, the spraying slurry is adsorbed on bottom of device and fouling easily, causes hot-spot, thereby causes low, the follow-up spraying effect of Btu utilization efficient not good.
Summary of the invention
Technical problem to be solved in the utility model is that the spraying of conventional art spraying equipment, dry run can't be carried out continuously, thereby cause the shortcoming that spraying process is long, materials quality is poor, treating capacity is little, a kind of new continuous spraying drying device that is used to prepare laminated composites is provided.Continuously spraying drying device has production efficiency height, disposal ability is big, coating quality is high advantage.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows: a kind of continuous spraying drying device that is used to prepare laminated composites, comprise: overflow valve 4, magnetic valve 5, pulp jets device 6, air heater 12, temperature controller 13, air jet system 14, rotating speed controller 15 and cylinder 16, wherein the import of overflow valve 4 is connected with the raw material slurry pipeline, the outlet of overflow valve 4 links to each other with the import of magnetic valve, the outlet of magnetic valve 5 links to each other with pulp jets device 6, and the jet of pulp jets device 6 is towards the opening direction of cylinder 16; The import of air heating apparatus 12 links to each other with air pipe line, and outlet links to each other with air jet system 14, and the jet opening of air jet system 14 is towards the opening direction of cylinder 16; Temperature controller 13 links to each other with air heater 12 and cylinder 16 respectively; Rotating speed controller 15 links to each other with cylinder 16.
In the technique scheme, the raw material slurry pipeline successively is connected with measuring pump 3, filter 2 and slurry storage tank 1 in order, then interconnect, constitute the pulp jets system, thereby the pressure and the flow of slurry are sprayed in control with overflow valve 4, magnetic valve 5, pulp jets device 6.Air pipe line successively is connected with gas flowmeter 11, magnetic valve 10, filter 9, pressure-reducing valve 8 and air compressor 7 in order, then interconnect with air preheater 12, temperature controller 13, air jet system 14, constitute air-injection system, thus pressure, flow and the temperature of control air.Cylinder, drum rotation speed controller, temperature controller are connected by pipeline, thus the rotating speed of index drum and heating-up temperature.In addition, the jet opening of the jet of pulp jets device and air jet system towards all towards the opening direction of cylinder, thereby guarantee that slurry and air are ejected on the material pending on the cylinder.
In the technique scheme, cylinder comprises a kind of heater, utilizes heater to heat to cylinder, makes the slurry fusing that low temperature solidifies down easily or viscosity is bigger in the cylinder or improves liquidity, and avoids slurry to be attached to cylinder bottom.The cylinder heating-up temperature is controlled by temperature controller, and drum rotation speed is controlled by rotational speed governor.Drum rotation speed should not be low excessively, otherwise the sprayed surface uniformity is relatively poor; Also unsuitable excessive, the rate of wear that causes spraying material increases, and the loss of spraying slurry increases.When the drum-type flush coater sprays slurry to the material surface, utilize material in cylinder, not stop rotation and finish spraying, improve material surface spraying uniformity and fineness.
The pulp jets device is that the slurry that measuring pump is sent here is sprayed on the material to be sprayed, makes the required laminated composites of test by operations such as dryings.The nozzle of pulp jets device can be selected plain nozzle for use, also can select air atomizer spray nozzle for use.In order to spray evenly, nozzle form should be selected rectangle or flat for use.In order to regulate flow, should select the adjustable flow nozzle for use, but which kind of mode no matter, the spraying fabric width and the spray distance of pulp jets device must satisfy test requirements document.The slurry addition can be controlled by measuring pump, and the measuring pump form is not limit, and can be diaphragm type, also can be plunger type.Automatically revise by real time measure and to quantity for spray during slurry feed, reduce the error of slurry quantity for spray, make the spraying of material surface evenly, reach best spraying effect.
Air jet system is with on the blast injection of the uniform temperature material behind the spraying slurry, removes moisture or solvent substantially thereby guarantee to spray material.Compressed air require is controlled by gas flowmeter, and pressure is controlled by pressure-reducing valve.In order to reach maximum drying effect, the compressed-air atomizer shape should be selected rectangle or flat for use, thereby the compressed air of convenient pressure and flow is provided for the spraying material.In order to regulate flow, should select the adjustable flow nozzle for use.
In addition, pulp jets device and air jet system adopt pulse mode work, and when promptly carrying out the slurry spraying, compressed air stops to spray; Otherwise when compressed air carried out jet drying, slurry stopped spraying, to guarantee coating quality and drying efficiency.Burst length can be adjusted according to the character of spraying material, and pulse frequency is by solenoid control.
The utility model is owing to adopt the mode of spraying and drying process continuous operation, thereby can significantly improve the operating efficiency of device, thereby it is big to have disposal ability, the advantage that coating quality is high; Simultaneously, owing to adopted automatic control device, thereby have automaticity height and slurry interpolation advantage of high precision, obtained better technical effect.
Description of drawings
Fig. 1 is used to prepare the continuous spraying drying equipment structure schematic diagram of laminated composites for the utility model.
Among Fig. 1: 1-slurry storage tank; 2-slurries filtration device; The 3-measuring pump; The 4-overflow valve; The 5-magnetic valve; 6-pulp jets device; The 7-air compressor; The 8-pressure-reducing valve; The 9-air cleaner; The 10-magnetic valve; The 11-gas flowmeter; The 12-air heater; The 13-temperature controller; The 14-air jet system; The 15-rotational speed governor; The 16-cylinder.
A kind of split type continuous spray drying device as shown in Figure 1, container (cylinder) and slurry and air jet system Separate, and independent operating separately.
Fig. 1 is divided into three parts, i.e. slurry storage, conveying and spout part; Air conveying, preheating and spout part; Roll Tube heating, rotating part. Every part can independent design, control and use. Slurry is carried, spout part is responsible for carrying Evenly spray on the material to be sprayed for pressure, flow, the satisfactory slurry of proportioning and with it. Air heat, injection section Divide and to be responsible for providing the suitable gas of pressure, flow, temperature with the moisture in the dry slurry or other solvents. Cylinder heats, turns to Moving control section is responsible for impelling material not stop rotation in cylinder and is finished spraying, to improve material surface spraying uniformity and bright and clean Spend, the suitable temperature of slurry is provided simultaneously, improve the flowability of slurry.
The control section of whole system is responsible for coordinating three parts and is carried out work. Its operation principle: when needs add slurry, Automatically controlled instruction measuring pump and overflow valve are opened simultaneously, slurry is delivered to spray equipment with suitable pressure and flow spray. Air compressor and air jet system are closed in automatically controlled instruction simultaneously. When the dry spray finishing material of needs high temperature compressed air, electricity Control instruction unpack air compressor and air jet system carry convenient pressure, flow and temperature compressed air to nozzle, with Dried material is closed slurry charge pump and injection apparatus simultaneously, and the temperature of cylinder and rotating speed be separately control then.
Operating process: parts 1 are the slurry storage tanks with agitator among the figure. The Main Function of agitator is to guarantee that slurry fully mixes Evenly. Whipped form is not limit, and can be jetting type, Wheel-type, vane type. When slurry sprays, measuring pump and excessive The stream valve is opened simultaneously, and slurry after slurries filtration device, measuring pump, relief valve pressure regulating are transferred stream, enters slurry through magnetic valve from storage tank The material injection apparatus begins spraying. The Main Function of slurries filtration device is in order to prevent the larger particles retaining pressure instrument in the slurry Table and nozzle reach the wearing and tearing to charge pump. The effect of measuring pump is to measure slurry flow, and its precision is directly connected to slurry The precision that material adds. Usually, precision is more high more good, and preferably elementary error is less than ± 1%. Overflow valve mainly plays pressure-limit current-limit Effect, guarantee that the pressure and the flow that arrive nozzle place slurry meet the requirements, simultaneously also play a safety valve effect, current When end takes place to stop up, give slurry one bypass loop, damage to prevent that measuring pump from stopping up. The Main Function of magnetic valve is in metering Pump quits work under the state, cuts off slurry, it and measuring pump Simultaneous Switching.
When air jet system carried out work, compressed air was controlled at suitable pressure by air compressor through behind the pressure-reducing valve Scope enters gas flowmeter behind air cleaner, magnetic valve, enter after metering air heating apparatus, air heat The device heating-up temperature controlled by temperature controller, treat that gas reaches design temperature after, through air jet system with pulse side Formula purges the material after the spraying. Material filling to be sprayed is in cylinder, and the cylinder mode of heating can be electrical heating, also can be The chuck heating, such as Steam Heating, oil bath heating, fused salt heating etc., bowl temperature is also controlled by temperature controller. Cylinder turns to Speed is by rotational speed governor control, and the Main Function of magnetic valve is under air compressor quits work state, cuts off air, it With the air compressor Simultaneous Switching.
In addition, pulp jets device and air jet system adopt intermittent work mode, and pulse frequency is by solenoid control, namely When carrying out the slurry spraying, compressed air stops to spray; Otherwise when compressed air carried out jet drying, slurry stopped spraying, To guarantee coating quality and drying efficiency.
Describe the utility model in detail below in conjunction with drawings and Examples.
The specific embodiment
[comparative example 1]
United States Patent (USP) 20040077911 has reported that a kind of is the H 2 selective oxidation catalyst of carrier with the lithium aluminate.This catalyst is a kernel with the cordierite, is coating with the lithium aluminate, load platinum metal and modified metal on coating, for example, platinum and tin.Oxidation has good effect to this catalyst to hydrogen selective in dehydrogenation reaction, but the lamellar composite carrier preparation process of this catalyst is long, complex process.
According to the 3 preparation lamellar composite carrier S1 of embodiment in the United States Patent (USP) 20040077911, the physical and chemical performance index sees Table 1.
[embodiment 1]
Prescription and step according to comparative example 1 prepare lamellar composite carrier S2.Just adopt the continuous spraying drying device of the utility model Fig. 1 to carry out, 120 ℃ of bowl temperatures, 500 rev/mins of drum rotation speeds.Earlier with the flow spraying slurry of 0.2 milliliters/second 3 minutes, then stop spraying, feed 200 ℃ compressed air drying carrier 5 minutes, compressed air require is 200 milliliters/second, pressure 8 kilograms per centimeter
2, and then spray, carry out and so forth, finish up to spraying, about 45 minutes of time, then give drying, roasting according to step in the comparative example 1, obtain lamellar composite carrier S2, the physical and chemical performance index sees Table 1.
Table 1 carrier physical and chemical performance test result
A. 30 gram carriers are placed 100ml water, takes out after 30 minutes with BUG25-06 type ultrasonic washing instrument (operating frequency 50Hz, voltage 220V, electric current 3A) sonic oscillation, 150 ℃ of dryings 1 hour, cooling is weighed, calculating coating loss rate.
B. place 800 ℃ Muffle furnace to be incubated 20 minutes in 30 gram carriers, take out to insert immediately in the room temperature and cooled off 30 minutes, carry out repeatedly 3 times, weigh calculates the coating loss rate.
As shown in Table 1, adopt the carrier of the utility model device preparation, have better spraying effect, the spraying evening ratio surpasses 99.0%, and the surface is more smooth, and coating quality is higher; Simultaneously, adopt sonic oscillation technology and cold and hot fatigue test to detect the coating binding ability respectively, the results are shown in Table 1.As seen from table, the coating loss rate of the lamellar composite carrier of the utility model device preparation is lower, the lamellar composite carrier coating that shows the preparation of the utility model device obviously is better than reference catalyst with the firmness that combines of matrix, thereby has shown the good characteristic of the utility model device.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605875U CN201200962Y (en) | 2008-06-12 | 2008-06-12 | Continuous spray drying unit for the preparation of layered composites |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605875U CN201200962Y (en) | 2008-06-12 | 2008-06-12 | Continuous spray drying unit for the preparation of layered composites |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189006A (en) * | 2010-03-03 | 2011-09-21 | 中国石油化工股份有限公司 | Spraying preparation method of layered composite oxide carrier |
| CN102601513A (en) * | 2012-03-14 | 2012-07-25 | 甘国工 | Ultrasonic welding device used for solar energy collecting panel and provided with welding mark coating mechanism |
| CN103008149A (en) * | 2012-12-28 | 2013-04-03 | 北京工业大学 | Auxiliary device for improving effect of coating long strip by chemical solution czochralski method and use method |
| CN104741070A (en) * | 2013-12-27 | 2015-07-01 | 财团法人塑料工业技术发展中心 | Plant material for delaying maturation and ageing and its preparing process |
| CN104872804A (en) * | 2015-06-05 | 2015-09-02 | 河南通威饲料有限公司 | Vitamin post-spraying adding equipment used during expanded feed production and application of vitamin post-spraying adding equipment |
| CN109647308A (en) * | 2018-08-10 | 2019-04-19 | 嘉兴立新材料有限公司 | A kind of device for bearing wear-resistant material |
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2008
- 2008-06-12 CN CNU2008200605875U patent/CN201200962Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189006A (en) * | 2010-03-03 | 2011-09-21 | 中国石油化工股份有限公司 | Spraying preparation method of layered composite oxide carrier |
| CN102189006B (en) * | 2010-03-03 | 2013-01-09 | 中国石油化工股份有限公司 | Spraying preparation method of layered composite oxide carrier |
| CN102601513A (en) * | 2012-03-14 | 2012-07-25 | 甘国工 | Ultrasonic welding device used for solar energy collecting panel and provided with welding mark coating mechanism |
| CN103008149A (en) * | 2012-12-28 | 2013-04-03 | 北京工业大学 | Auxiliary device for improving effect of coating long strip by chemical solution czochralski method and use method |
| CN103008149B (en) * | 2012-12-28 | 2015-04-29 | 北京工业大学 | Auxiliary device for improving effect of coating long strip by chemical solution czochralski method and use method |
| CN104741070A (en) * | 2013-12-27 | 2015-07-01 | 财团法人塑料工业技术发展中心 | Plant material for delaying maturation and ageing and its preparing process |
| CN104741070B (en) * | 2013-12-27 | 2018-04-10 | 财团法人塑料工业技术发展中心 | Plant material for delaying maturation and ageing and its preparing process |
| CN104872804A (en) * | 2015-06-05 | 2015-09-02 | 河南通威饲料有限公司 | Vitamin post-spraying adding equipment used during expanded feed production and application of vitamin post-spraying adding equipment |
| CN109647308A (en) * | 2018-08-10 | 2019-04-19 | 嘉兴立新材料有限公司 | A kind of device for bearing wear-resistant material |
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