CN105363230A - Spray drying apparatus for drying catalyst - Google Patents
Spray drying apparatus for drying catalyst Download PDFInfo
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- CN105363230A CN105363230A CN201510842129.1A CN201510842129A CN105363230A CN 105363230 A CN105363230 A CN 105363230A CN 201510842129 A CN201510842129 A CN 201510842129A CN 105363230 A CN105363230 A CN 105363230A
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- drying
- drying tower
- frequency conversion
- centrifugal atomizer
- air
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Abstract
The present invention relates to a spray drying apparatus for drying a catalyst. The apparatus comprises: a centrifugal drying column comprising a vertical upper cylinder and a lower circular cone; the middle of a column top is provided with a volute hot air distributor and a variable frequency centrifugal atomizer; a storage tank is connected to a feed inlet of the variable frequency centrifugal atomizer via a material delivery pump; a heating apparatus is connected to an air inlet of the volute hot air distributor via a hot air pipeline; a cooling feeder is mounted at the bottom of the drying column and is connected to a discharge port of the drying column; an upper side wall of the drying column is provided with a cloth bag filter chamber; a removable cloth bag filter is disposed in the cloth bag filter chamber; a plurality of pneumatic hammers are mounted on an outer side wall of the drying column; and the pneumatic hammers are connected to an electric air pump via a gas pipeline. An intelligent control box is connected to the variable frequency centrifugal atomizer, the material delivery pump, the heating apparatus, the cooling feeder and the electric air pump via wires; operating parameters of the entire drying apparatus are controlled accurately; and the phenomenon of adhesion in the drying column can be effectively avoided, thereby enhancing the quality of a catalyst.
Description
Technical field
The present invention relates to catalyst preparation technical field, particularly relate to the spray-drying installation of the drying of a kind of catalyst and granulation.
Background technology
Catalyst has irreplaceable status in modern chemical industry, about has the chemical reaction of 80% relevant with the existence of catalyst.Existing catalyst mostly is nanoscale or micron-sized granular powder, and between particle and solution, Presence of an interface tension force, easily produces particle aggregation, and therefore in the process of solution reaction Kaolinite Preparation of Catalyst powder, drying is extremely crucial operation.Spraying dry is modal a kind of the dry technology of liquid dried powdered product in chemical engineering industry, its operation principle is: by the method for spraying, material is sprayed into droplet dispersion in hot-air, material and hot-air be and flow, the mode of adverse current or mixed flow contacts with each other, moisture is evaporated rapidly, reaches dry object.Adopt this drying means, the unit operations such as concentrated, filtration, pulverizing can be saved, and drying time short (general drying time is 5 ~ 30s), destroy few to the active ingredient of dried material.But existing catalyst drying device is carrying out in spray-dired process, the dried material of frequent appearance adheres to the phenomenon on drying tower inwall, because sticky wall material is comparatively difficult to be taken out of drying tower in time, thus adhesion material is caused to burn or the rotten quality affecting catalyst powder; In order to improve the quality of product, remove the sticky wall material in drying tower, midway of having to stops drying, and then causes the operation cycle long, and production efficiency is low, continued operation is difficult.
Summary of the invention
The present invention is just for the technical problem existed in prior art, a kind of spray-drying installation for dry catalyst is provided, this device overall construction design is ingenious, automaticity is high, effectively can avoid dry catalyst that the phenomenon of sticky wall occurs in drying tower, improve the quality of finished catalyst.
To achieve these goals, the technical solution used in the present invention is, a kind of spray-drying installation for dry catalyst, comprise the centrifugal drying tower of vertical upper cylinder and lower circular cone composite construction, feeding device, heater, cooling blanking device, dedusting emptier and intelligent control box, described drying tower inwall is provided with one deck hydrophobic layer, spiral case hot-air distributor and frequency conversion centrifugal atomizer is provided with in the middle part of the tower top of drying tower, the nozzle of described frequency conversion centrifugal atomizer extends to drying tower inside through the cone of spiral case hot-air distributor, frequency conversion centrifugal atomizer base is provided with alignment pin makes the axis of atomizer nozzle coincide with the center line of drying tower all the time, the material-storage jar of described feeding device is connected to the charging aperture of frequency conversion centrifugal atomizer by dehvery pump, described heater connects the air inlet of spiral case hot-air distributor by hot air duct, described cooling blanking device is arranged on the bottom of drying tower and connects with drying tower discharging opening, described dedusting emptier comprises the dust removing purifier and exhaust fan that are connected, and described dust removing purifier connects the evacuation port of drying tower, be provided with cloth envelop collector room at the tower internal upper part sidewall of drying tower, drying tower evacuation port is opened on the sidewall of cloth envelop collector room, and the bottom of cloth envelop collector room is uncovered, is evenly provided with dismountable cloth envelop collector in cloth envelop collector indoor, the lateral wall of described drying tower is provided with multiple pneumatic hammer, and described pneumatic hammer connects electric air pump by appendix, described intelligent control box connects frequency conversion centrifugal atomizer, dehvery pump, heater, cooling blanking device, exhaust fan and electric air pump by wire, accurately controls the running parameter of whole drying device.The ingenious practicality of described whole Technical Design, control and management is convenient for production, can effectively avoid material to glue the phenomenon of wall, and catalyst powder purity is after drying high and have good laxity and dissolubility.
As a modification of the present invention, described dehvery pump adopts membrane pump, adopts ball face sealing, good seal performance between the valve seat of this membrane pump and valve ball, and effectively ensure that the uniformity entering material in frequency conversion centrifugal atomizer, thus improve charging rate and charging continuity.
As a modification of the present invention; feeding pipe between dehvery pump and frequency conversion centrifugal atomizer is provided with filter; for the crude fibre in filter material and bulky grain foreign material; to prevent distributing device and the atomizing disk passage of feed blocking frequency conversion centrifugal atomizer; thus the moment making material shape become droplet and leave atomizing disk is just formed and is atomized feed liquid uniformly, improve catalyst powder or granulation uniformity.
As a modification of the present invention, the front end of described heater is provided with air cleaner, air is delivered to by pressure fan in electric heater and is formed hot blast after heating after described air cleaner filters, hot blast after spiral case hot-air distributor distributes helically state to enter in drying tower and carry out the exchange of heat and matter with the atomization feed liquid that sprays in the nozzle from frequency conversion centrifugal atomizer.The covering radius of hot blast is comparatively large and distribution is comparatively even, can fully effectively be combined with atomization feed liquid, rapidly by the moisture evaporate to dryness in atomization feed liquid.
As a modification of the present invention, upper wind deflector and the lower wind deflector of described spiral case hot-air distributor are all arranged in cone, the angle of described upper wind deflector and cone axis is 25 ~ 30 °, the angle of lower wind deflector and cone axis is 0 °, and the quantity of upper wind deflector is the twice of lower wind deflector quantity, hot blast can be made like this to enter in drying tower can be uniformly distributed and ensure that hot blast rotates, thus the time of contact extended between hot blast and atomization feed liquid, the heat and mass between hot blast and atomization feed liquid is impelled to complete in Best Times, the phenomenon effectively avoiding wet stock to glue wall occurs.
As a modification of the present invention, described frequency conversion centrifugal atomizer adopts associated mode high speed centrifugal atomization device, variable-frequency motor on atomizer is directly connected by the rotating shaft of shaft coupling with atomizing disk top, thus the phenomenon that can effectively avoid atomizing disk to deflect in rotary course, thus can guarantee that the nozzle of atomizing disk bottom does not offset, effectively avoid the local material wall sticking phenomenon produced because of nozzle inclination.And shaft coupling is fixedly mounted on atomizing disk top by bearing block, impact substantially not vibrated in atomizing disk rotating shaft rotation process, avoids occurring that material glues the phenomenon of wall further.
As a modification of the present invention, the nozzle of described frequency conversion centrifugal atomizer adopts thyrite to make, due to this material have high temperature resistant, to acid-alkali salt, there is the advantage such as good corrosion resistance and good chemical stability, make nozzle operation in drying tower environment, have lower wear rate and good chemical property, thus improve the service life of frequency conversion centrifugal atomizer, also effectively ensure that the uniformity coefficient of atomization feed liquid.
Relative to prior art, advantage of the present invention is as follows, 1) overall construction design of this drying device is ingenious, disassembly and assembly convenient maintenance and replacement, and cost is lower and rate of drying fast, and dry gained finished catalyst has good shatter value and granulation uniformity; 2) this device is easy and simple to handle, the Drying Technology Parameter that baking temperature, feed rate, discharging rate etc. are relevant only need be pre-set in intelligent control box, after start, whole device enters the state of Automatic continuous work, automaticity is high, whole dry run carries out full-automatic centralized Control by intelligent control box, control and management is convenient, effectively reduces the labour intensity of operating personnel; 3) cloth envelop collector room is set in centrifugal drying tower, effectively prevent be arranged on drying tower outside in the past rewinding dust arrester on the impact of drying tower inner drying air-flow, thus guarantee that atomization feed liquid is in the abundant degree of tower inner drying, and material wall sticking phenomenon is avoided to occur; The recyclable attritive powder taken away by air-flow of cloth envelop collector of the indoor setting of cloth envelop collector simultaneously, and the cone bottom discharge mouth that the powder after reclaiming falls to drying tower again due to the effect of self gravitation is discharged outside tower together with the powder fallen after drying, waste gas enters air by exhaust fan by evacuation port after dust removing purifier udst separation; 4) owing to have employed the good spiral case hot-air distributor of air-supply uniformity and the good frequency conversion centrifugal atomizer of atomizing effect, in addition the setting of pneumatic hammer on outer wall, material wall sticking phenomenon is there is hardly when adopting this drying device to carry out catalyst drying process, effectively improve the quality of catalyst drying and the continuity of drying process, while substantially increasing drying efficiency, add the economic benefit of enterprise.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of spiral case hot-air distributor of the present invention.
Fig. 3 is the structural representation of frequency conversion centrifugal atomizer of the present invention.
In figure: 1-centrifugal drying tower, 2-frequency conversion centrifugal atomizer, 3-spiral case hot-air distributor, 4-material-storage jar, 5-dehvery pump, 6-filter, 7-cools blanking device, 8-pressure fan, 9-air cleaner, 10-electric heater, 11-cloth envelop collector room, 12-cloth envelop collector, 13-dust removing purifier, 14-exhaust fan, 15-intelligent control box, 16-pneumatic hammer, 17-electric air pump, 18-air inlet, the upper wind deflector of 19-, 20-cone, wind deflector under 21-, 22-conical shell, 23-air outlet, 24-variable-frequency motor, 25-shaft coupling, 26-bearing block, 27-rotating shaft, 28-atomizing disk.
Detailed description of the invention
In order to deepen the understanding of the present invention and understanding, below in conjunction with accompanying drawing, the invention will be further described and introduce.
embodiment 1:as Fig. 1-Fig. 3, a kind of spray-drying installation for dry catalyst, comprise the centrifugal drying tower 1 of vertical upper cylinder and lower circular cone composite construction, feeding device, heater, cooling blanking device 7, dedusting emptier and intelligent control box 15, described drying tower 1 inwall is provided with one deck hydrophobic layer, spiral case hot-air distributor 3 and frequency conversion centrifugal atomizer 2 is provided with in the middle part of the tower top of drying tower 1, it is inner that the nozzle of described frequency conversion centrifugal atomizer 2 extends to drying tower 1 through the cone 20 of spiral case hot-air distributor 3, frequency conversion centrifugal atomizer 2 base is provided with alignment pin makes the axis of atomizer nozzle coincide with the center line of drying tower 1 all the time, the material-storage jar 4 of described feeding device is connected to the charging aperture of frequency conversion centrifugal atomizer 2 by dehvery pump 5, described heater connects the air inlet 18 of spiral case hot-air distributor 3 by hot air duct, described cooling blanking device 7 is arranged on the bottom of drying tower 1 and connects with drying tower 1 discharging opening, described dedusting emptier comprises the dust removing purifier 13 and exhaust fan 14 that are connected, and described dust removing purifier 13 connects the evacuation port of drying tower 1, be provided with cloth envelop collector room 11 at the tower internal upper part sidewall of drying tower 1, drying tower 1 evacuation port is opened on the sidewall of cloth envelop collector room 11, and the bottom of cloth envelop collector room 11 is uncovered, is evenly provided with dismountable cloth envelop collector 12 in cloth envelop collector room 11, the lateral wall of described drying tower 1 is provided with multiple pneumatic hammer 16, and described pneumatic hammer 16 connects electric air pump 17 by appendix, described intelligent control box 15 connects frequency conversion centrifugal atomizer 2, dehvery pump 5, heater, cooling blanking device 7, exhaust fan 14 and electric air pump 17 by wire, accurately controls the running parameter of whole drying device.The ingenious practicality of described whole Technical Design, control and management is convenient for production, can effectively avoid material to glue the phenomenon of wall, and catalyst powder purity is after drying high and have good laxity and dissolubility.
embodiment 2:as Fig. 1; as a modification of the present invention; feeding pipe between dehvery pump 5 and frequency conversion centrifugal atomizer 2 is provided with filter 6; for the crude fibre in filter material and bulky grain foreign material; to prevent distributing device and atomizing disk 28 passage of feed blocking frequency conversion centrifugal atomizer 2; thus the moment making material shape become droplet and leave atomizing disk 28 is just formed and is atomized feed liquid uniformly, improve catalyst powder or granulation uniformity.All the other structures are identical with embodiment 1 with advantage.
embodiment 3:as Fig. 1, as a modification of the present invention, the front end of described heater is provided with air cleaner 96, air is delivered to by pressure fan 8 in electric heater 10 and is formed hot blast after heating after described air cleaner 96 filters, hot blast after spiral case hot-air distributor 3 distributes helically state to enter drying tower 1 in and carry out the exchange of heat and matter with the atomization feed liquid that sprays in the nozzle from frequency conversion centrifugal atomizer 2.The covering radius of hot blast is comparatively large and distribution is comparatively even, can fully effectively be combined with atomization feed liquid, rapidly by the moisture evaporate to dryness in atomization feed liquid.All the other structures are identical with embodiment 1 with advantage.
embodiment 4:as a modification of the present invention, described dehvery pump 5 adopts membrane pump, adopts ball face sealing, good seal performance between the valve seat of this membrane pump and valve ball, and effectively ensure that the uniformity entering material in frequency conversion centrifugal atomizer 2, thus improve charging rate and charging continuity.All the other structures are identical with embodiment 1 with advantage.
embodiment 5:as Fig. 2, as a modification of the present invention, upper wind deflector 19 and the lower wind deflector 21 of described spiral case hot-air distributor 3 are all arranged in cone 20, described upper wind deflector 19 is 25 ~ 30 ° with the angle of cone 20 axis, lower wind deflector 21 is 0 ° with the angle of cone 20 axis, and the quantity of upper wind deflector 19 is twices of lower wind deflector 21 quantity, hot blast can be made like this to enter in drying tower 1 can be uniformly distributed and ensure that hot blast rotates, thus the time of contact extended between hot blast and atomization feed liquid, the heat and mass between hot blast and atomization feed liquid is impelled to complete in Best Times, the phenomenon effectively avoiding wet stock to glue wall occurs.All the other structures are identical with embodiment 1 with advantage.
embodiment 6:as Fig. 3, as a modification of the present invention, described frequency conversion centrifugal atomizer 2 adopts associated mode high speed centrifugal atomization device, variable-frequency motor 24 on atomizer is directly connected by the rotating shaft 27 of shaft coupling 25 with atomizing disk 28 top, thus effectively can avoid the phenomenon that atomizing disk 28 deflects in rotary course, thus can guarantee that the nozzle of atomizing disk 28 bottom does not offset, effectively avoid the local material wall sticking phenomenon produced because of nozzle inclination.And shaft coupling 25 is fixedly mounted on atomizing disk 28 top by bearing block 26, impact substantially not vibrated in atomizing disk 28 rotating shaft 27 rotation process, avoids occurring that material glues the phenomenon of wall further.All the other structures are identical with embodiment 1 with advantage.
embodiment 7:as a modification of the present invention, the nozzle of described frequency conversion centrifugal atomizer 2 adopts thyrite to make, due to this material have high temperature resistant, to acid-alkali salt, there is the advantage such as good corrosion resistance and good chemical stability, nozzle operation is made to have lower wear rate and good chemical property in drying tower 1 environment, thus improve the service life of frequency conversion centrifugal atomizer 2, also effectively ensure that the uniformity coefficient of atomization feed liquid.All the other structures are identical with embodiment 1 with advantage.
At least one in technical characteristic described in embodiment 2,3,4,5,6,7 and embodiment 1 can also be combined to form new embodiment by the present invention.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, equivalents done on the basis of technique scheme or the alternative scope all falling into the claims in the present invention and protect.
Claims (7)
1. the spray-drying installation for dry catalyst, it is characterized in that: the centrifugal drying tower comprising vertical upper cylinder and lower circular cone composite construction, feeding device, heater, cooling blanking device, dedusting emptier and intelligent control box, described drying tower inwall is provided with one deck hydrophobic layer, spiral case hot-air distributor and frequency conversion centrifugal atomizer is provided with in the middle part of the tower top of drying tower, the nozzle of described frequency conversion centrifugal atomizer extends to drying tower inside through the cone of spiral case hot-air distributor, frequency conversion centrifugal atomizer base is provided with alignment pin makes the axis of atomizer nozzle coincide with the center line of drying tower all the time, the material-storage jar of described feeding device is connected to the charging aperture of frequency conversion centrifugal atomizer through dehvery pump, described heater connects the air inlet of spiral case hot-air distributor by hot air duct, described cooling blanking device is arranged on the bottom of drying tower and connects with drying tower discharging opening, described dedusting emptier comprises the dust removing purifier and exhaust fan that are connected, and described dust removing purifier connects the evacuation port of drying tower, be provided with cloth envelop collector room at the tower internal upper part sidewall of drying tower, drying tower evacuation port is opened on the sidewall of cloth envelop collector room, and the bottom of cloth envelop collector room is uncovered, is evenly provided with dismountable cloth envelop collector in cloth envelop collector indoor, the lateral wall of described drying tower is provided with multiple pneumatic hammer, and described pneumatic hammer connects electric air pump by appendix, described intelligent control box connects frequency conversion centrifugal atomizer, dehvery pump, heater, cooling blanking device, exhaust fan and electric air pump by wire, accurately controls the running parameter of whole drying device.
2. as claimed in claim 1 for the spray-drying installation of dry catalyst, it is characterized in that, the front end of described heater is provided with air cleaner, air is delivered to by pressure fan in electric heater and is formed hot blast after heating after described air cleaner filters, hot blast after spiral case hot-air distributor distributes helically state to enter in drying tower and carry out the exchange of heat and matter with the atomization feed liquid that sprays in the nozzle from frequency conversion centrifugal atomizer.
3., as claimed in claim 2 for the spray-drying installation of dry catalyst, it is characterized in that, the feeding pipe between dehvery pump and frequency conversion centrifugal atomizer is provided with filter.
4. as claimed in claim 3 for the spray-drying installation of dry catalyst, it is characterized in that, described dehvery pump adopts membrane pump, adopts ball face sealing between the valve seat of this membrane pump and valve ball.
5. as claimed in claim 1 for the spray-drying installation of dry catalyst, it is characterized in that, upper wind deflector and the lower wind deflector of described spiral case hot-air distributor are all arranged in cone, the angle of described upper wind deflector and cone axis is 25 ~ 30 °, the angle of lower wind deflector and cone axis is 0 °, and the quantity of upper wind deflector is the twice of lower wind deflector quantity.
6. as claimed in claim 1 for the spray-drying installation of dry catalyst, it is characterized in that, described frequency conversion centrifugal atomizer adopts associated mode high speed centrifugal atomization device, variable-frequency motor on atomizer is directly connected by the rotating shaft of shaft coupling with atomizing disk top, and shaft coupling is fixedly mounted on atomizing disk top by bearing block.
7. as claimed in claim 6 for the spray-drying installation of dry catalyst, it is characterized in that, the nozzle of described frequency conversion centrifugal atomizer adopts thyrite to make.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510842129.1A CN105363230B (en) | 2015-11-28 | 2015-11-28 | Spray-drying installation for dry catalyst |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510842129.1A CN105363230B (en) | 2015-11-28 | 2015-11-28 | Spray-drying installation for dry catalyst |
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| CN105363230A true CN105363230A (en) | 2016-03-02 |
| CN105363230B CN105363230B (en) | 2017-08-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630557A (en) * | 2019-01-29 | 2019-04-16 | 莱克电气股份有限公司 | A kind of shaft coupling and mist generating device of achievable noise reduction |
| CN117959737A (en) * | 2024-04-01 | 2024-05-03 | 连云港西都食品配料有限公司 | Phosphate anti-adhesion centrifugal drying device |
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Patent Citations (6)
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| US20060143939A1 (en) * | 2002-12-17 | 2006-07-06 | Carlisle Process System B.V. | Spray-drying device |
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| CN109630557A (en) * | 2019-01-29 | 2019-04-16 | 莱克电气股份有限公司 | A kind of shaft coupling and mist generating device of achievable noise reduction |
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| CN117959737B (en) * | 2024-04-01 | 2024-06-04 | 连云港西都食品配料有限公司 | Phosphate anti-adhesion centrifugal drying device |
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