CN106352683A - Catalyst precursor industrial drying method capable of being easily influenced by temperature and oxygen and system thereof - Google Patents
Catalyst precursor industrial drying method capable of being easily influenced by temperature and oxygen and system thereof Download PDFInfo
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- CN106352683A CN106352683A CN201610917147.6A CN201610917147A CN106352683A CN 106352683 A CN106352683 A CN 106352683A CN 201610917147 A CN201610917147 A CN 201610917147A CN 106352683 A CN106352683 A CN 106352683A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
Abstract
The invention provides a catalyst precursor industrial drying method capable of being easily influenced by temperature and oxygen and a system thereof. The method comprises the steps that a catalyst precursor is dried by a drying machine; circulation hot water is introduced into blades, a shaft and a jacket of the drying machine for providing heat sources; nitrogen gas continuously passes through a cavity of the drying machine, so that effects of protecting gas and carrying the moisture are achieved; the nitrogen gas carries out the moisture and then enters a filter; catalyst dust is filtered and is pumped out by a draught fan to be discharged; the dried catalyst precursor is cooled and sieved to obtain a product. The system comprises the drying machine, the filter, the draught fan, a rotary feeder, a vibration sieve, a heating water tank, a cooling water tank, a heating water pump, a cooling water pump and an electric heater. The drying method provided by the invention has the advantages that the catalyst precursor is uniformly and stably dried in inert environment at low temperature; the catalyst precursor can be effectively prevented from spontaneous combustion, decomposition and inactivation in the drying process; the dried catalyst precursor has good flowability.
Description
Technical field
The present invention relates to a kind of industrial drying method of catalyst precursor easily being affected by temperature, oxygen and system, belong to
In catalyst technical field of drying.
Background technology
Loaded catalyst presoma after mill retting needs to keep mass fraction 10～40% about in transportation
Water content, and prepare finished product catalyst stage and generally have particular/special requirement to water content, therefore this part water needs by industry
Drying device is removing.Require dried catalyst precursor mobile performance good.
Catalyst drying unit is the important step in catalyst preparation technology, the quality directly shadow of catalyst drying effect
Ring quality and the yield of catalyst.Catalyst drying equipment such as tray dryer, revolving drier, the belt drying commonly used at present
Device, the temperature distributing disproportionation of the internal diverse location of these drying equipments is even, easily produces hot localised points and changes catalyst precursor
Composition, affects catalyst performance.
Cn103447041a discloses a kind of method that use rapid draing stage prepares catalyst, and the catalysis that will be obtained
Agent is applied to F- T synthesis, and the method adopts lab oven that dipping cobalt nitrate on a silica-alumina carrier is dried
Catalyst, but it is not directed to industrialized dry technology.
Cn102538426a discloses continuous drying process and equipment for cyclohexanone oximation catalyst, and this drying system is using entering
Material pump, two grades of blade dryers, sack cleaner, air-introduced machine and air heater.This technique uses air as carrier gas, heat
Source adopts 0.5mpa (g), 165 DEG C of vapor, by Ketohexamethylene oximate catalyst drying to moisture content ＜ 4%.But this technology
Baking temperature higher, and carrier gas is high temperature air, for easy oxidation by air or the labile catalyst of high temperature and inapplicable.
, in dry run, a catalyst to be prevented is because of high temperature or ingress of air decomposition change at high temperature for loaded catalyst
Matter, two will avoid the occurrence of hot localised points by uniform dry catalyst, and three dry rate to be improved save drying time, reducing energy consumption.
And the drying meanss of loaded catalyst presoma being applied at present easily be affected by temperature, oxygen have no report.
Content of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of catalyst easily being affected by temperature, oxygen
The industrial drying method of presoma.This dry run is gentleer, and uniformity of temperature profile does not change catalyst crystal structure, and
Dried catalyst precursor has good mobility, is that next step is prepared finished catalyst and prepares.
Another object of the present invention also resides in the corollary system providing above-mentioned drying meanss, be can achieve even using this system
Continuous dry, improve production efficiency.
For reaching above-mentioned purpose, present invention firstly provides a kind of catalyst precursor easily being affected by temperature, oxygen
Industrial drying method, the method comprises the following steps:
Catalyst precursor is made to be added in drying machine by the charge door of drying machine, catalyst precursor is in drying machine
It is heated continuously, to be dried to the water content of technological requirement, obtains dried catalyst precursor, and control in dry run
In drying machine processed, medium temperature is less than setting value (this setting value is 50～70 DEG C)；Employ nitrogen as carrier gas, reduce pressure laggard
Enter drying machine (0.01～0.05mpa (g) can be decompressed to), enter filter after moisture is taken out of and filter catalyst powder therein
Dirt, the nitrogen after filtration extracts emptying out through air-introduced machine；By cooled for dried catalyst precursor, screening after, obtain product.
In the above-mentioned methods it is preferable that described drying machine is rake blade dryer, built-in by rake blade dryer
Blade and rake leaf continuous stirring catalyst precursor, laser heating catalyst precursor simultaneously, and then realize complex catalyst precursor
The drying of body.
In the above-mentioned methods it is preferable that the thermal source that catalyst precursor is heated continuously in drying machine is by circulation
Hot water is passed through the mode of blade, axle and the chuck of drying machine to provide, and catalyst precursor is continuous in drying machine
It is heated to 50～70 DEG C.It is highly preferred that described circulating hot water be heating water tank electric heater heating be issued to setting value, warp
Heating pump delivers to blade, axle and the chuck of drying machine.
In the above-mentioned methods it is preferable that controlling medium temperature in drying machine not surpass in dry run by following steps
Cross setting value: it is uniformly arranged temperature sensor on the housing of described drying machine, to monitor the evaporating temperature of material in drying machine,
And it is less than setting value by controlling the electric heater capacity of heating water tank to adjust medium temperature in drying machine, both shortened drying
Time, prevent high temperature from leading to loaded catalyst presoma spontaneous combustion, decomposition again.
In the above-mentioned methods it is preferable that dried catalyst precursor is cooled down using recirculated cooling water, with
Accelerate the cooling procedure of dried catalyst precursor so as to be cooled to room temperature.It is highly preferred that described recirculated cooling water be
In cooling water tank, cooled water pump delivers to blade, axle and the chuck of drying machine, and then makes dried catalyst precursor cold
But to room temperature.
In the above-mentioned methods, the chuck of drying machine is installed on the shell of drying machine, by by circulating hot water or cooling water
The chuck delivering to drying machine is to realize drying machine is heated or cooled.
In the above-mentioned methods it is preferable that the Stress control in drying machine in dry run is in -0.05～0mpa (g), and
Pressure in drying machine is controlled by air-introduced machine.Dryer inner is pumped into by tiny structure by air-introduced machine, to accelerate moisture
Evaporation, and nitrogen plays shielding gas and the effect carrying moisture, improves production efficiency, saves drying time.
In the above-mentioned methods it is preferable that and cooling down the catalyst precursor that completes and carry out after following steps being to drying
Screening: make after drying and cool down the catalyst precursor completing and rotary feeder is entered by the discharging opening of drying machine, and then
Be added in vibrosieve, through bolting qualified after pack, wherein, sieving qualified standard can be less than 40 mesh.More excellent
Selection of land, said method further includes steps of to be made to pass through drying machine through the underproof catalyst precursor of bolting
Charge door return to and continue in drying machine to be dried.
According to the specific embodiment of the present invention, said method is further comprising the steps of: adopts indifferent gas anti-filter
Blowing-out ash, and indifferent gas is to filter deashing through electromagnetism valve timing.
In the above-mentioned methods it is preferable that described filter is bag filter, such as pulsed jet cloth filter.
In the present invention, the loaded catalyst presoma that can be used for above-mentioned drying meanss can be by slaine and vehicle group
Become, wherein metallic element species is unrestricted；Slaine temperature influence easily decomposes, spontaneous combustion, and form is including but not limited to acetic acid
The combination of one or more in salt, nitrate, carbonate, chloride and oxalates etc.；Carrier can be conventional porous material
Material, form include but is not limited to activated carbon, molecular sieve, natural clay, silica gel, kieselguhr, aluminium oxide, silicon dioxide, titanium oxide,
The combination of one or more in cerium oxide and zirconium oxide etc..
On the other hand, present invention also offers a kind of work of the above-mentioned catalyst precursor easily being affected by temperature, oxygen
The corollary system of industry drying meanss, it at least includes: drying machine, filter, air-introduced machine, a rotation feed
Device, a vibrosieve, a heating water tank, a cooling water tank, a heating pump, a cooling water pump and an electricity add
Hot device；
Wherein, catalyst precursor material pipe is connected to the charge door of drying machine, and the discharging opening of drying machine passes through pipeline
It is connected to rotary feeder, the lower section of rotary feeder is provided with vibrosieve；Carrier gas channel is connected to the carrier gas inlet of drying machine,
The carrier gas outlet of drying machine is sequentially connected to filter, air-introduced machine by pipeline；Circulating hot water pipeline is connected to heating water
Case, heating pump, the blade of drying machine, axle and chuck；Recirculated cooling water pipeline is connected to cooling water tank, cooling water pump,
The blade of drying machine, axle and chuck；And it is provided with electric heater in heating water tank.
It is preferable that described drying machine is rake blade dryer in said system.
It is preferable that described filter is pulsed jet cloth filter in said system.
It is preferable that being evenly arranged with temperature sensor on the housing of described drying machine in said system.
It is preferable that the discharging opening of described drying machine is provided with push-pull valve, to reduce dead band in said system.
The invention provides a kind of industrial drying method of catalyst precursor easily being affected by temperature, oxygen and system.
Prepare during finished catalyst restricted to forerunner's body water content it is therefore desirable to catalyst precursor drying and dehydrating, that is, from 10～
40wt% drops to below 10wt%.The industrial drying method of the present invention at low temperature, in inert environments, uniform and stable dry catalysis
Agent presoma, can with effective protection catalyst precursor in dry run not spontaneous combustion, do not decompose, non-inactivation, make full use of heat
Can, drying efficiency is high, and dried catalyst precursor has good mobility, in the loaded catalyst of high-moisture
In presoma dry run, there is outstanding advantage.
The industrial drying method of catalyst precursor and system that the present invention provides, mainly have the advantage that
(1) catalyst precursor is dried under indifferent gas atmosphere, prevents catalyst from air from inactivating；
(2) utilize rake blade dryer, catalyst precursor is heated evenly under drying machine stirring, there is not localized heat
Point, and achieve continuous drying process；
(3) adopt rake blade dryer, blade rotating speed is low, stirring is gentle, in the catalyst precursor of broken caking
Meanwhile, also avoid catalyst abrasion.
(4) dryer inner is pumped into tiny structure by air-introduced machine, accelerates moisture evaporation, and takes away moisture by nitrogen, improves
Production efficiency, saves drying time；
(5) adopt internal heat type drying mode: be passed through circulating hot water in drying machine paddle, axle and chuck and ensure dryer inner
Uniformity of temperature profile；The uniform temperature sensor of drying machine is it is ensured that temperature of charge is less than setting value, it is to avoid too high temperature leads to
Catalyst precursor state changes；
(6) drying machine discharge port prevents powder from piling up using push-pull valve；
(7) dried catalyst adopts recirculated cooling water to lower the temperature, and accelerates catalyst cooling procedure；
(8) sack cleaner effectively catches the dust of carrier gas picks, meets the organic efficiency of catalyst precursor.
Brief description
Fig. 1 is the drying technology process schematic diagram of the specific embodiment of the present invention；
Primary clustering symbol description: 1, rake blade dryer；2nd, pulsed jet cloth filter；3rd, air-introduced machine；4th, rotate to
Glassware；5th, vibrosieve；6th, heating water tank；7th, cooling water tank；8th, heating pump；9th, cooling water pump；10th, electric heater；11st, discharging
Mouth push-pull valve.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and beneficial effect, the now skill to the present invention
Art scheme carry out described further below, but it is not intended that to the present invention can practical range restriction.
The invention provides a kind of industrially drying system of the catalyst precursor easily being affected by temperature, oxygen, according to this
The preferred embodiment of invention, as shown in figure 1, this system may include that
1, pulsed jet cloth filter of one rake blade dryer, 3, rotary feeder 4 of 2, air-introduced machine,
6, cooling water tank of 5, heating water tank of one vibrosieve, 8, cooling water pump 9 of 7, heating pump and an electricity
Heater 10；
Wherein, catalyst precursor material pipe is connected to the charge door of rake blade dryer 1, rake blade dryer
1 discharging opening is connected to rotary feeder 4 by pipeline, and the lower section of rotary feeder 4 is provided with vibrosieve 5；Carrier gas channel is even
It is connected to the carrier gas inlet of rake blade dryer 1, the carrier gas outlet of rake blade dryer 1 is sequentially connected to pulse by pipeline
Sack cleaner 2, air-introduced machine 3；Circulating hot water pipeline is connected to heating water tank 6, heating pump 8, rake blade dryer 1
Blade, axle and chuck；Recirculated cooling water pipeline is connected to cooling water tank 7, cooling water pump 9, rake blade dryer 1
Blade, axle and chuck；And temperature sensor, rake blade dryer 1 are evenly arranged with the housing of rake blade dryer 1
Discharging opening be provided with discharging opening push-pull valve 11；It is provided with electric heater 10 in heating water tank 6.
Present invention also offers a kind of industrial drying method of the catalyst precursor easily being affected by temperature, oxygen, according to
The preferred embodiment of the present invention, as shown in figure 1, the method may comprise steps of:
(1) heating making the electric heater 10 in heating water tank 6 for the circulating hot water is issued to setting value, then heated water pump
8 blade, axle and the chucks delivering to rake blade dryer 1, to lift the temperature of drying machine；
(2) catalyst precursor is added in drying machine by the charge door of rake blade dryer 1, complex catalyst precursor
Body is heated continuously to 50～70 DEG C in drying machine, to be dried to the water content of technological requirement, obtains dried catalyst
Presoma, and control medium temperature in drying machine to be less than setting value in dry run by following steps: by rake oar
The temperature sensor being uniformly arranged on the housing of leaf drying machine 1, the evaporating temperature of material in monitoring drying machine, and added by controlling
Electric heater 10 power of boiler 6 is less than setting value adjusting in drying machine medium temperature；
(3) employ nitrogen as carrier gas, be decompressed to the carrier gas that 0.01～0.05mpa (g) passes through rake blade dryer 1 afterwards
Entrance enters drying machine, after taking moisture out of by the carrier gas outlet of rake blade dryer 1, enters pulsed jet cloth filter 2
Filter catalyst dust therein, the nitrogen after filtration extracts emptying out through air-introduced machine 3, utilize air-introduced machine 3 by drying machine simultaneously
Tiny structure is pumped in portion, makes the Stress control in drying machine in dry run in -0.05～0mpa (g)；And if before catalyst
Drive body insensitive to air, nitrogen can only be passed in drying machine (i.e. in circulating hot water in heating water tank 6 in drying stage
Temperature rise period, nitrogen can not be passed through in drying machine)；
(4) make recirculated cooling water cooled water pump 9 in cooling water tank 7 deliver to the blade of rake blade dryer 1, axle and
Chuck, dried catalyst precursor is cooled to room temperature；
And then make after drying and cool down the catalyst precursor that completes to enter by the discharging opening push-pull valve 11 of drying machine (5)
Enter rotary feeder 4, and then be added in vibrosieve 5, through vibrosieve 5 sieve qualified after pack, sieve qualified standard permissible
It is less than 40 mesh, obtains product, and make the underproof catalyst precursor of screening return to rake by the charge door of drying machine
Continue to be dried in formula blade dryer 1；
(6) indifferent gas reverse gas cleaning is adopted to pulsed jet cloth filter 2, and indifferent gas is to pulse through electromagnetism valve timing
Sack cleaner 2 deashing.
With specific embodiment, technical scheme is further described in detail below.
Embodiment 1
By 1.75t water content 10～30wt% about barreled catalyst precursor rake blade is promoted to by lifter
The charge door of drying machine and then be added in drying machine, using 70 DEG C of circulating hot waters pass through rake blade dryer blade,
Axle and chuck, and by the built-in blade of rake blade dryer and rake leaf continuous stirring catalyst precursor, and then indirectly do
Dry catalyst precursor, about 10 hours drying times, in dry run, vacuum degree control is in -0.05～0mpa (g)；
Wherein, circulating hot water is to be issued to 70 DEG C in the electric heater heating of heating water tank, and heated water pump is delivered to
The blade of rake blade dryer, axle and chuck；And in dry run, by equal on the housing of rake blade dryer
The temperature sensor of even setting, the evaporating temperature of material in monitoring drying machine, and by controlling the electric heater work(of heating water tank
Rate is less than 59 DEG C of setting value adjusting in drying machine medium temperature；
Employ nitrogen as carrier gas, be decompressed to 0.02mpa (g) entered by the carrier gas inlet of rake blade dryer afterwards dry
Dry machine, makes catalyst precursor heat under nitrogen atmosphere, is then exported gasification by the carrier gas of rake blade dryer
After moisture is taken out of, enter pulsed jet cloth filter and filter catalyst dust therein, the nitrogen after filtration is extracted out through air-introduced machine and put
Dryer inner is pumped into tiny structure using air-introduced machine by sky simultaneously, and then by the vacuum degree control in drying machine in dry run
In -0.05～0mpa (g)；
After drying time reaches, recirculated cooling water cooled water pump in cooling water tank is made to deliver to rake blade dryer
Blade, axle and chuck, dried catalyst precursor is cooled to room temperature；
Then make after drying and cool down the catalyst precursor completing and rotation is entered by the discharging opening push-pull valve of drying machine
It is given to glassware, and then is added in vibrosieve, be less than the qualified products pack of 40 mesh through bolting, obtain product, and
Make the underproof catalyst precursor of screening return in rake blade dryer by the charge door of drying machine to proceed to do
Dry；
Nitrogen reverse gas cleaning is adopted to pulsed jet cloth filter, and nitrogen is to bag pulse dedusting through electromagnetism valve timing
Device deashing.
Dried catalyst precursor product sampling carries out x-ray diffraction analysis, diffracting spectrum before and after contrast is dry, inspection
Survey whether catalyst precursor crystalline structure changes.
Data statisticss are dried and see table 1.
The drying parameter of table 1 embodiment 1
Embodiment 2
By 1.74t water content 10～30wt% about barreled catalyst precursor rake blade is promoted to by lifter
The charge door of drying machine and then be added in drying machine, using 70 DEG C of circulating hot waters pass through rake blade dryer blade,
Axle and chuck, and by the built-in blade of rake blade dryer and rake leaf continuous stirring catalyst precursor, and then indirectly do
Dry catalyst precursor, about 10 hours drying times, in dry run, vacuum degree control is in -0.05～0mpa (g)；
Wherein, circulating hot water is to be issued to 70 DEG C in the electric heater heating of heating water tank, and heated water pump is delivered to
The blade of rake blade dryer, axle and chuck；And in dry run, by equal on the housing of rake blade dryer
The temperature sensor of even setting, the evaporating temperature of material in monitoring drying machine, and by controlling the electric heater work(of heating water tank
Rate is less than 59 DEG C of setting value adjusting in drying machine medium temperature；
Employ nitrogen as carrier gas, if catalyst precursor is insensitive to air, nitrogen can only be passed through in drying stage
It is not necessary to be passed through in the temperature rise period of circulating hot water in drying machine, nitrogen is made to pass through rake oar through being decompressed to after 0.02mpa (g)
The carrier gas inlet of leaf drying machine enters drying machine, so that catalyst precursor is heated under nitrogen atmosphere, then passes through rake blade
After the moisture of gasification is taken out of by the carrier gas outlet of drying machine, enter bag filter and filter catalyst dust therein, after filtration
Nitrogen extract emptying out through air-introduced machine, using air-introduced machine, dryer inner is pumped into tiny structure, and then by dry run simultaneously
Vacuum degree control in drying machine is in -0.05～0mpa (g)；
After drying time reaches, recirculated cooling water cooled water pump in cooling water tank is made to deliver to rake blade dryer
Blade, axle and chuck, dried catalyst precursor is cooled to room temperature；
Then make after drying and cool down the catalyst precursor completing and rotation is entered by the discharging opening push-pull valve of drying machine
It is given to glassware, and then is added in vibrosieve, be less than the qualified products pack of 40 mesh through bolting, obtain product, and
Make the underproof catalyst precursor of screening return in rake blade dryer by the charge door of drying machine to proceed to do
Dry；
Nitrogen reverse gas cleaning is adopted to bag filter, and nitrogen is to bag filter deashing through electromagnetism valve timing.
Dried catalyst precursor product sampling carries out x-ray diffraction analysis, diffracting spectrum before and after contrast is dry, inspection
Survey whether catalyst precursor crystalline structure changes.
Data statisticss are dried and see table 2.
The drying parameter of table 2 embodiment 2
As can be seen from the above embodiments, the industrial drying method of the present invention at low temperature, in inert environments, uniform and stable
Dry catalyst presoma, can with effective protection catalyst precursor in dry run not spontaneous combustion, do not decompose, non-inactivation, fill
Divide and utilize heat energy, drying efficiency is high, and dried catalyst precursor has good mobility, in the load of high-moisture
In type catalyst precursor dry run, there is outstanding advantage.
Claims (11)
1. a kind of industrial drying method of the catalyst precursor easily being affected by temperature, oxygen, the method comprises the following steps:
Catalyst precursor is made to be added in drying machine by the charge door of drying machine, catalyst precursor is connected in drying machine
Continuous heating, to be dried to the water content of technological requirement, obtains dried catalyst precursor, and controls dry in dry run
In dry machine, medium temperature is less than setting value；Employ nitrogen as carrier gas, entrance drying machine after decompression, entrance after moisture is taken out of
Filter filters catalyst dust therein, and the nitrogen after filtration extracts emptying out through air-introduced machine；By dried complex catalyst precursor
Body is cooled, after screening, obtain product.
2. industrial drying method according to claim 1, wherein, described drying machine is rake blade dryer.
3. industrial drying method according to claim 1, wherein, catalyst precursor is heated continuously in drying machine
Thermal source is to provide by way of blade, axle and the chuck being passed through drying machine by circulating hot water, and catalyst precursor exists
It is heated continuously in drying machine to 50～70 DEG C；Preferably, described circulating hot water is under the electric heater of heating water tank heats
Reach setting value, blade, axle and the chuck of drying machine delivered to by heated water pump.
4. the industrial drying method according to claim 1 or 3, wherein, is controlled dry in dry run by following steps
In dry machine, medium temperature is less than setting value: is uniformly arranged temperature sensor on the housing of described drying machine, to monitor drying
The evaporating temperature of material in machine, and do not surpassed by controlling the electric heater capacity of heating water tank to adjust medium temperature in drying machine
Cross setting value.
5. industrial drying method according to claim 1, wherein, dried catalyst precursor is to adopt circulating cooling
Water is cooled down；Preferably, described recirculated cooling water is that cooled water pump delivers to the blade of drying machine, axle in cooling water tank
And chuck, and then make dried catalyst precursor be cooled to room temperature.
6. industrial drying method according to claim 1, wherein, Stress control in drying machine in dry run-
Pressure in 0.05～0mpag, and drying machine is controlled by described air-introduced machine.
7. industrial drying method according to claim 1, wherein, after following steps are to drying and cool down complete urge
Agent presoma is sieved: makes after drying and cools down the catalyst precursor completing and enter rotation by the discharging opening of drying machine
Be given to glassware, and then be added in vibrosieve, through bolting qualified after pack；Preferably, described industrial drying method enters
One step comprises the following steps: makes to return to by the charge door of drying machine through the underproof catalyst precursor of bolting dry
Continue to be dried in dry machine.
8. industrial drying method according to claim 1, it is further comprising the steps of: adopts indifferent gas blowback to filter
Deashing, and indifferent gas is to filter deashing through electromagnetism valve timing.
9. industrial drying method according to claim 1, wherein, described filter is bag filter, preferably pulse
Sack cleaner.
10. the industrially drying side of the catalyst precursor easily being affected by temperature, oxygen described in a kind of any one of claim 1-9
The corollary system of method, it at least includes: drying machine, filter, air-introduced machine, rotary feeder, one
Vibrosieve, a heating water tank, a cooling water tank, a heating pump, a cooling water pump and an electric heater；
Wherein, catalyst precursor material pipe is connected to the charge door of drying machine, and the discharging opening of drying machine is connected by pipeline
In rotary feeder, the lower section of rotary feeder is provided with vibrosieve；Carrier gas channel is connected to the carrier gas inlet of drying machine, is dried
The carrier gas outlet of machine is sequentially connected to filter, air-introduced machine by pipeline；Circulating hot water pipeline is connected to heating water tank, plus
Heat-exchanger pump, the blade of drying machine, axle and chuck；Recirculated cooling water pipeline is connected to cooling water tank, cooling water pump, drying machine
Blade, axle and chuck；And it is provided with electric heater in heating water tank.
11. systems according to claim 10, wherein, the discharging opening of described drying machine is provided with push-pull valve.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286886A (en) * | 2018-03-28 | 2018-07-17 | 梧州黄埔化工药业有限公司 | A kind of method and apparatus of oxalic acid drying |
| CN111704816A (en) * | 2020-06-29 | 2020-09-25 | 长沙标朗住工科技有限公司 | Long-acting slow-release bactericidal antiviral coating and preparation method and application thereof |
| CN113465329A (en) * | 2021-06-24 | 2021-10-01 | 宁夏新龙蓝天科技股份有限公司 | Novel oxygen-free mercury-free catalyst drying process |
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| CN111704816A (en) * | 2020-06-29 | 2020-09-25 | 长沙标朗住工科技有限公司 | Long-acting slow-release bactericidal antiviral coating and preparation method and application thereof |
| CN113465329A (en) * | 2021-06-24 | 2021-10-01 | 宁夏新龙蓝天科技股份有限公司 | Novel oxygen-free mercury-free catalyst drying process |
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