CN110433873A - A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating - Google Patents
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating Download PDFInfo
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- CN110433873A CN110433873A CN201910742871.3A CN201910742871A CN110433873A CN 110433873 A CN110433873 A CN 110433873A CN 201910742871 A CN201910742871 A CN 201910742871A CN 110433873 A CN110433873 A CN 110433873A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/344—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy
- B01J37/346—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy of microwave energy
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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
- F26B23/04—Heating arrangements using electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/062—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
- F27B9/067—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated heated by induction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
- F27B2009/382—Charging
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Abstract
The invention discloses a kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, include the following steps, S1, will be put on aperture plastic plate after the catalyst wet embryo packed in cases after extrusion molding, plastic plate is placed on dry trolley；S2, trolley to be dried are pushed into the microwave drier of tunnel oven form after filling, and dry trolley is exported according to speed automatic running to the microwave drier of setting, complete drying process；After S3, carton to be packaged are removed, catalyst is put on calcining trolley at once, and by the microwave calcination device for calcining trolley push-in tunnel oven form, trolley is exported according to speed automatic running to the calciner plant of setting, completes calcination operation.It by using above-mentioned technical proposal, can either guarantee the activity of catalyst, and the time of production can be shortened.
Description
Technical field
The present invention relates to catalyst production field, in particular to a kind of honeycomb type denitrification catalyst rapid draing and calcining side
Method.
Background technique
With social economy high speed development, people also increasingly paid close attention to the environment itself lived in recent years, especially
It is the existence that atmospheric issues constantly affect the mankind.And the main pollution of existing pollution atmosphere has sulfide and nitrogen oxides.
Wherein, the administering method of nitrogen oxide in tail gas is most widely used at present mainly based on SCR technology
Gas denitrifying technology, core are that denitrating catalyst is selected.Existing denitrating catalyst has cellular, flat and corrugated plating
Three kinds of formula, wherein for honeycomb type denitrification catalyst with its large specific surface area, the characteristics such as anti-toxicity can be excellent occupy 50% or more
The market share.
However, conventional cellular denitrating catalyst mainly includes that ingredient mixing, packing compact forming, heated-air drying, electric kiln are forged
Burning and finished product packing, the entire production cycle is longer, and generally 20-22 days.Wherein the drying and calcination time is 15 days or so, if can
The time required to reducing catalyst drying and calcination, production cycle of catalyst can be effectively shortened, and then reach promotion leading portion
Processing apparatus utilization rate saves production space, reduces the purpose of cost, is of great significance.
Summary of the invention
The object of the present invention is to provide a kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, not only shorten life
The time cost of production, while ensure that the good catalyst activity of cellular catalyst.
Foregoing invention purpose of the invention has the technical scheme that a kind of honeycomb type denitrification catalyst
Rapid draing and method for calcinating, it is characterised in that: include the following steps,
S1, it will be put on aperture plastic plate, plastic plate be placed in dry after the catalyst wet embryo packed in cases after extrusion molding
On dry trolley；
S2, trolley to be dried are pushed into the microwave drier of tunnel oven form after filling, and dry trolley according to the speed of setting
Automatic running to microwave drier exports, and completes drying process；
After S3, carton to be packaged are removed, catalyst is put on calcining trolley at once, and calcining trolley is pushed into tunnel oven form
Microwave calcination device in, trolley is exported according to the speed automatic running of setting to calciner plant, completes calcination operation.
By using above-mentioned technical proposal, uniform drying is also improved while on the one hand improving rate of drying, into
And the qualification rate of product can be promoted.Microwave heating is different from Hot-blast Heating mode, and the latter is to pass through heat radiation by external heat source
Conduction-type heating from outward appearance to inner essence；And microwave heating is that material body as caused by dielectric loss in electromagnetic field heats.It is this
Heating is that electromagnetic energy is transformed into thermal energy, and energy is to be transmitted by space or medium with electromagnetic wave, to substance
The polarization of heating process and substance interior molecules has close relationship.Polarization of the medium to microwave field is shown as to electric field electricity
The loss of current density, the dielectric constant of general substance is no more than 50, and the dielectric constant of water is 78.54.When water-containing materials are set to
When in the electromagnetic field generated by microwave generator, microwave field changes the side of extra electric field with several hundred million times per second speed periods
To swinging hydrone rapidly, generate significant fuel factor, to make inside material and surface temperature increases rapidly simultaneously.Cause
This microwave can improve in a very short period of time temperature of charge or accelerate reaction rate at that same temperature.In addition, catalyst
Molecule in wet embryo can tremble under microwave action, so that the intermolecular energy inside catalyst wet embryo accesses
It makes up, and then is conducive to improve the density of catalyst wet embryo.
Similarly, catalyst idiosome is calcined using microwave, can guarantees that catalyst idiosome Integral synchronous is added in this way
Heat, to be also beneficial to improve the efficiency of calcining and the qualification rate of product.
Furthermore microwave drier and microwave calcination device are tunnel oven forms, also just eliminate work people in this way
Member picks and places the operation of catalyst, ensure that the correct time that catalyst wet embryo is dried or catalyst idiosome is calcined, thus
Advantageously ensure that the stabilization of the catalyst quality of production.
Preferably, microwave drier and microwave calcination device are equipped with along dry trolley and calcining trolley moving direction respectively
Several microwave sources, and the frequency of microwave source is gradually increased respectively along dry trolley and calcining trolley moving direction.
Preferably, the microwave source frequency of microwave drier is 0.25~2KW, and the speed of dry trolley be 0.35~
0.5m/h。
Preferably, the microwave source frequency of microwave calcination device is 2.5~15KW, and the speed of microwave calcination trolley is 3.5
~4m/h.
Preferably, it calcines and has pallet on trolley, and the pallet can be rotated around center.
By using above-mentioned technical proposal, since catalyst idiosome can absorb the microwave of some strength, different parts
The microwave intensity for receiving irradiation can all be slightly different, to be easy to influence the steady of different parts performance after catalyst calcination
It is fixed.
And pallet can be rotated around center, can guarantee that the microwave of each site absorption of catalyst is strong in this way
Degree be it is close, so as to be further ensured that the stabilization of catalyst total quality.
Preferably, in S1 in carton have interior title sponge, and interior titles sponge be coated on catalyst wet embryo outside and bottom with urge
Agent wet embryo is in contact.
Interior title sea by using above-mentioned technical proposal, since the structure of catalyst wet embryo is softer frangible, in carton
Silk floss can just carry out buffer protection to it.Secondly, there are also a large amount of capillary structures inside sponge, contacted with catalyst wet embryo
Afterwards, the moisture in catalyst wet embryo can be drawn into sponge by capillary phenomenon, to further be conducive to the steaming of moisture
Hair.
Absorbent paper layer is equipped between the catalyst wet embryo and interior title sponge.
By using above-mentioned technical proposal, absorbent paper layer is arranged between catalyst wet embryo and interior title sponge, such one
Aspect can guarantee that the moisture in catalyst wet embryo can smoothly enter in interior title sponge, on the other hand inside claim sponge with
When catalyst idiosome after drying is separated, also can be avoided catalyst idiosome part adhered to away by interior title sponge and
There is flaw.
In addition, being attached at the blotting paper on catalyst idiosome surface can be burned together when catalyst idiosome is calcined
Completely, to ensure that the integrality of finished catalyst.
The microwave calcination device has exhaust treatment system, and the exhaust treatment system includes and microwave calcination device top
Tail gas collecting device, electrostatic precipitator and the spray equipment that portion is sequentially communicated respectively.
During due to calcining, sulfur dioxide and dust can be generated, tail gas first passes through electrostatic precipitator after collecting
Dust is removed, sulfur dioxide is removed by spray equipment again later.
Preferably, the solution sprayed in the spray equipment is the mixed solution of calcium hydroxide and hydrogen peroxide, and the two
Molar ratio is 3: 1.
By using above-mentioned technical proposal, the calcium hydroxide of one side mixed solution kind can absorb the titanium dioxide in tail gas
Carbon, sulfur dioxide and sulfur trioxide gas, and after having reabsorbed these sour gas, the pH of mixed solution gradually shows
Acidity, so that the oxidation susceptibility of hydrogen peroxide accesses effectively is promoted, to be mixed solution absorption and not by ozone
Fully oxidized substance can be further oxided under the action of hydrogen peroxide at this time.Tail gas is also just further improved in this way
Effectively remove the pollutant generated in calcination process.
In addition, in the case of due to normal temperature storage, mixed solution be it is alkaline, can guarantee the stabilization of hydrogen peroxide in this way, keep away
Exempt from it to decompose easily.
In conclusion advantageous effects of the invention are as follows:
1, catalyst wet embryo and catalyst idiosome are handled respectively using microwave drier and microwave calcination device, is being had
While effect improves the efficiency of catalyst drying and calcination, the qualification rate of product can also be promoted；
2, using interior title sponge coated catalysts wet embryo, on the one hand catalyst wet embryo can be protected in this way, on the other hand
The moisture that can also assist in catalyst wet embryo is entered in interior title sponge by capillary phenomenon, to be conducive to improve catalyst
The drying efficiency of wet embryo；
3, rotatable pallet will be had on calcining trolley, and can guarantees that catalyst calcination is integrally heated equal in the process in this way
It is even, and then it is advantageously implemented the stabilization of catalyst total quality；
4, carry out sulfur dioxide absorption tail gas first with the mixed solution of calcium hydroxide and hydrogen peroxide, reuse electrostatic precipitator and go
Chalk dust removing pollutant, so that tail gas be made to realize pollution " zero-emission ".
Detailed description of the invention
Fig. 1 is the structural schematic diagram of exhaust treatment system；
Fig. 2 is the structural schematic diagram for absorbing spray column.
In figure, 1, tail gas collecting device；2, electrostatic precipitator；3, spray equipment；4, air blower；5, chimney.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1:
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, include the following steps:
Step 1: by 150 × 150 × 300mm, the interior carton packet for claiming sponge of 18*18 pore catalyst wet embryo after extrusion molding
It is put in after dress on the plastic plate that percent opening is 63~73%, plastic plate is placed on dry trolley；
Step 2: trolley to be dried is pushed into the microwave drier of tunnel oven form after filling, and microwave drier is along dry
The moving direction of trolley is provided with 12 microwave sources, and specific microwave source setup parameter is as shown in following table one:
Table one
Dry small vehicle speed is set as 0.5m/h；
Step 3: after trolley to be dried is driven out to microwave drier, after the Packaging Box of the catalyst idiosome after drying is removed
It piles up on calcining trolley, and by the microwave calcination device for calcining trolley push-in tunnel oven form, calcines trolley according to setting
Speed automatic running to calciner plant export, microwave calcination device is provided with 7 microwave sources along the moving direction of calcining trolley,
Specific microwave source setup parameter is as shown in following table two:
Table two
| Microwave source number | 1-2 | 2-2 | 3-2 | 4-2 | 5-2 | 6-2 | 7-2 |
| Set power kW | 2.5 | 2.5 | 5 | 5 | 10 | 10 | 15 |
It calcines small vehicle speed and is set as 4m/h, can be obtained finished catalyst after calcining trolley and being driven out to microwave calcination device.
Embodiment 2:
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, include the following steps:
Step 1: by 150 × 150 × 600mm, the interior carton packet for claiming sponge of 22*22 pore catalyst wet embryo after extrusion molding
It is put in after dress on the plastic plate of percent opening 63~73%, plastic plate is placed on dry trolley；
Step 2: trolley to be dried is pushed into the microwave drier of tunnel oven form after filling, and microwave drier is along dry
The moving direction of trolley is provided with 12 microwave sources, and specific microwave source setup parameter is as shown in following table three:
Table three
Dry small vehicle speed is set as 0.45m/h；
Step 3: it after trolley to be dried is driven out to microwave drier, is piled up after the Packaging Box of catalyst is removed small in calcining
Che Shang, and by the microwave calcination device of trolley push-in tunnel oven form, trolley is extremely calcined according to the speed automatic running of setting
Device outlet, microwave calcination device are provided with 7 microwave sources along the moving direction of calcining trolley, and specific microwave source setup parameter is such as
Shown in following table four:
Table four
| Microwave source number | 1-2 | 2-2 | 3-2 | 4-2 | 5-2 | 6-2 | 7-2 |
| Set power kW | 2.5 | 2.5 | 5 | 5 | 10 | 10 | 15 |
It calcines small vehicle speed and is set as 4m/h, can be obtained finished catalyst after calcining trolley and being driven out to microwave calcination device.
Embodiment 3:
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, include the following steps:
Step 1: by 150 × 150 × 900mm, the interior carton packet for claiming sponge of 30*30 pore catalyst wet embryo after extrusion molding
It is put in after dress on the plastic plate of percent opening 63~73%, plastic plate is placed on dry trolley；
Step 2: trolley to be dried is pushed into the microwave drier of tunnel oven form after filling, and microwave drier is along dry
The moving direction of trolley is provided with 12 microwave sources, and specific microwave source setup parameter is as shown in following table five:
Table five
Dry small vehicle speed is set as 0.4m/h；
Step 3: it after trolley to be dried is driven out to microwave drier, is piled up after the Packaging Box of catalyst is removed small in calcining
Che Shang, and by the microwave calcination device of trolley push-in tunnel oven form, trolley is extremely calcined according to the speed automatic running of setting
Device outlet, microwave calcination device are provided with 7 microwave sources along the moving direction of calcining trolley, and specific microwave source setup parameter is such as
Shown in following table six:
Table six
| Microwave source number | 1-2 | 2-2 | 3-2 | 4-2 | 5-2 | 6-2 | 7-2 |
| Set power kW | 2.5 | 2.5 | 5 | 5 | 10 | 10 | 15 |
It calcines small vehicle speed and is set as 3.5m/h, can be obtained finished catalyst after calcining trolley and being driven out to microwave calcination device.
Wherein, herein prepared honeycomb type denitrification catalyst be our company's production SCR cellular catalyst.
Embodiment 4:
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, include the following steps:
Step 1: by 150 × 150 × 1300mm, the interior carton packet for claiming sponge of 40*40 pore catalyst wet embryo after extrusion molding
It is put in after dress on the plastic plate of percent opening 63~73%, plastic plate is placed on dry trolley；
Step 2: trolley to be dried is pushed into the microwave drier of tunnel oven form after filling, and microwave drier is along dry
The moving direction of trolley is provided with 12 microwave sources, and specific microwave source setup parameter is as shown in following table seven:
Table seven
Dry small vehicle speed is set as 0.35m/h；
Step 3: it after trolley to be dried is driven out to microwave drier, is piled up after the Packaging Box of catalyst is removed small in calcining
Che Shang, and by the microwave calcination device of trolley push-in tunnel oven form, trolley is extremely calcined according to the speed automatic running of setting
Device outlet, microwave calcination device are provided with 7 microwave sources along the moving direction of calcining trolley, and specific microwave source setup parameter is such as
Shown in following table eight:
Table eight
| Microwave source number | 1-2 | 2-2 | 3-2 | 4-2 | 5-2 | 6-2 | 7-2 |
| Set power kW | 2.5 | 2.5 | 5 | 5 | 10 | 10 | 15 |
It calcines small vehicle speed and is set as 3.5m/h, can be obtained finished catalyst after calcining trolley and being driven out to microwave calcination device.
Comparative example: pressing the corresponding catalyst wet embryo of each embodiment, routinely production technology (heated-air drying, electric kiln calcining)
Catalyst is prepared, comparative example 1,2,3,4 is obtained.Wherein, heated-air drying temperature is gradually heated to 60 DEG C from 25 DEG C, kiln calcining temperature
Degree is gradually heated to 600 DEG C from room temperature.
Detect example 1:
The drying and calcination time used in comparative example and comparative example, as a result as shown in following table nine:
Table nine
By the catalyst activity of GB/T31587-2015 detection embodiment and comparative example, as a result as shown in following table ten:
Table ten
| Sample | Catalyst denitration activity m/h |
| Embodiment 1 | 41.1 |
| Comparative example 1 | 41.0 |
| Embodiment 2 | 40.8 |
| Comparative example 2 | 40.8 |
| Embodiment 3 | 38.6 |
| Comparative example 3 | 38.2 |
| Embodiment 4 | 35.7 |
| Comparative example 4 | 35.6 |
Embodiment 5,
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, the difference with embodiment one be only that, the present embodiment
In be also filled with blotting paper between interior title sponge and catalyst wet embryo.
Embodiment 6,
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, the difference with embodiment two be only that, the present embodiment
In be also filled with blotting paper between interior title sponge and catalyst wet embryo.
By observing the appearance of finished catalyst, flaw is seen if there is, detects 5 He of embodiment by GB/T 31587-2015
Embodiment 6, as a result as shown in following table 11:
Table 11
It can be seen that after using blotting paper from table 11, both will not influence the activity of final finished catalyst, while
It avoids catalyst surface and the problem of flaw occurs.
Embodiment 7,
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, the difference with embodiment 2 be only that, the present embodiment
In, pallet is had on the calcining trolley of the present embodiment, and pallet can be rotated around center.Herein, pallet and calcining are small
Vehicle is wound with wirerope by axis connection on axis, and is connected outside wirerope one end and the import of microwave drier, in this way
When calcining trolley movement, wirerope will be unclamped from axis, at this point, axis just can rotate, and pallet be driven to rotate.
Embodiment 8,
A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, the difference with embodiment 4 is only that, in the present embodiment
Calcining trolley on pallet, rotation formula is same as Example 7.
By GB/T 31587-2015, respectively three corresponding positions of the finished catalyst of Example 2,4,7 and 8 into
Row Activity determination, wherein position one to position third is that be gradually distance from catalyst center selection, as a result as shown in following table 12:
Table 12
| Test position | Embodiment 2 | Embodiment 4 | Embodiment 7 | Embodiment 8 |
| Position one | 40.7 | 35.5 | 40.6 | 35.7 |
| Position two | 40.8 | 35.6 | 40.8 | 35.7 |
| Position three | 41.9 | 36.0 | 40.8 | 35.8 |
From upper table 12 as can be seen that since the pallet of calcining trolley is rotary, so that catalyst entirety
Activity can keep opposite stabilization.
Embodiment 9,
Microwave calcination device have an exhaust treatment system, as shown in Figure 1 and Figure 2, herein, exhaust treatment system include with
The tail gas collecting device 1 being connected at the top of microwave calcination device, tail gas collecting device 1 are connected with electrostatic precipitator 2, electrostatic
Dust-extraction unit 2 is connected with a spray equipment 3, and the pipeline that electrostatic precipitator 2 is connected to spray equipment 3 extend into spray dress
Under the liquid level for setting the mixed solution inside 3, furthermore, the top of spray equipment 3 is connected by air blower 4 with chimney 5.And it absorbs
The mixed solution of the spray of spray column 4 is the mixed solution of calcium hydroxide and hydrogen peroxide, wherein calcium hydroxide and hydrogen peroxide rub
You are than being 3: 1.
The tail gas that the microwave calcination device of untreated embodiment 1 is generated and the embodiment 1 handled through the present embodiment 9
Microwave calcination device generate tail gas tested, obtain the result such as following table 13:
It can be seen that the exhaust treatment system by the present embodiment 9 treated tail gas from the test result of table 13, inside
Pollutant substantially reduce, the pollution to environment can be effectively reduced in this way.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of honeycomb type denitrification catalyst rapid draing and method for calcinating, it is characterised in that: include the following steps,
S1, it will be put on aperture plastic plate, plastic plate be placed in dry after the catalyst wet embryo packed in cases after extrusion molding
On dry trolley；
S2, trolley to be dried are pushed into the microwave drier of tunnel oven form after filling, and dry trolley according to the speed of setting
Automatic running to microwave drier exports, and completes drying process；
After S3, carton to be packaged are removed, catalyst is put on calcining trolley at once, and calcining trolley is pushed into tunnel oven form
Microwave calcination device in, trolley is exported according to the speed automatic running of setting to calciner plant, completes calcination operation.
2. a kind of honeycomb type denitrification catalyst rapid draing according to claim 1 and method for calcinating, it is characterised in that: micro-
Wave drying device and microwave calcination device are equipped with several microwave sources, and microwave along dry trolley and calcining trolley moving direction respectively
The frequency in source is gradually increased respectively along dry trolley and calcining trolley moving direction.
3. a kind of honeycomb type denitrification catalyst rapid draing according to claim 2 and method for calcinating, it is characterised in that: micro-
The microwave source frequency of wave drying device is 0.25~2KW, and the speed of dry trolley is 0.35~0.5m/h.
4. a kind of honeycomb type denitrification catalyst rapid draing according to claim 2 and method for calcinating, it is characterised in that: micro-
The microwave source frequency of wave calciner plant is 2.5~15KW, and the speed of microwave calcination trolley is 3.5~4m/h.
5. a kind of honeycomb type denitrification catalyst rapid draing according to claim 1 and method for calcinating, it is characterised in that: forge
It burns and has pallet on trolley, and the pallet can be rotated around center.
6. a kind of honeycomb type denitrification catalyst rapid draing according to claim 1 and method for calcinating, it is characterised in that: S1
Interior title sponge is had in middle carton, and interior title sponge is coated on outside catalyst wet embryo and is in contact with catalyst wet embryo.
7. a kind of honeycomb type denitrification catalyst rapid draing according to claim 6 and method for calcinating, it is characterised in that: institute
It states and is equipped with absorbent paper layer between catalyst wet embryo and interior title sponge.
8. a kind of honeycomb type denitrification catalyst rapid draing according to claim 1 and method for calcinating, it is characterised in that: institute
Microwave calcination device is stated with exhaust treatment system, the exhaust treatment system includes distinguishing successively at the top of microwave calcination device
Tail gas collecting device (1), electrostatic precipitator (2) and the spray equipment (3) of connection.
9. a kind of honeycomb type denitrification catalyst rapid draing according to claim 8 and method for calcinating, it is characterised in that: institute
The mixed solution that the solution sprayed in spray equipment (3) is calcium hydroxide and hydrogen peroxide is stated, and the molar ratio of the two is 3: 1.
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Application publication date: 20191112 |