CN110314772A - A kind of adipic acid grain size sieving device and the method using its dry adipic acid product quality of progress particle filter raising - Google Patents
A kind of adipic acid grain size sieving device and the method using its dry adipic acid product quality of progress particle filter raising Download PDFInfo
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- CN110314772A CN110314772A CN201910620103.0A CN201910620103A CN110314772A CN 110314772 A CN110314772 A CN 110314772A CN 201910620103 A CN201910620103 A CN 201910620103A CN 110314772 A CN110314772 A CN 110314772A
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- Prior art keywords
- adipic acid
- outlet
- separation chamber
- big
- grain size
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/08—Granular materials
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The application discloses a kind of adipic acid grain size sieving device and the method using its dry adipic acid product quality of progress particle filter raising, belong to adipic acid production technical field, the adipic acid grain size sieving device includes fluidized bed dryer, big material bin, source nitrogen, even wind device, separation chamber, cyclone separator and packaging weighing-appliance, separation chamber is equipped with gas feed, material inlet, the outlet of selection by winnowing object and big granularity material outlet, fluidized bed dryer is connected by pipeline chain conveyor with big material bin top inlet, big material bin outlet at bottom is connected by pipeline with the material inlet of separation chamber, source nitrogen is connected by pipeline with the import of even wind device, the outlet of even wind device is connected with the gas feed of separation chamber, the outlet of selection by winnowing object is connected by pipeline with the import of cyclone separator, cyclone separator is equipped with dust outlet and small grain size material outlet, dust Outlet is connected by pipeline with the top of big material bin.
Description
Technical field
The invention belongs to adipic acid production technical field, particular technique is related to a kind of adipic acid grain size sieving device and utilization
It carries out the method that particle filter improves dry adipic acid product quality.
Background technique
The present invention is attached to dry adipic acid plant, and dry adipic acid plant is divided to two processes: drying process and sacker
Sequence.The raw material of drying process is that the high-quality adipic acid of moisture content 8-10% (utilizes Patent No.: CN106810442B, " one kind
The production method of high-quality adipic acid " technique produce to obtain), after which enters drying process, heated with low-pressure steam
Hot-air afterwards is in fluidized state under the action of hot-air in internal heating type drying fluidized-bed, and temperature is controlled in 70-90
DEG C, most moisture content in high-quality adipic acid are taken away by hot-air, water content is obtained in the product of 0.13-0.2%, enters
The packaging process of the device carries out packaging weighing (see figure 1), is eventually fed downstream user.It is domestic according to downstream customers' responsiveness
Dry adipic acid product is compared with the dry adipic acid product of the daily output of import, although the indifference in every product quality indicator,
But there is caking phenomenon after storing the regular hour in generally existing poor fluidity, measures through analysis: producing dry adipic acid grain daily
Degree is big and uniform, and generally in 0.4mm or more, water content can solve granularity than domestic lower (0.05-0.07%), the technology
Both of these problems in certainly domestic dry adipic acid product quality reach domestic dry adipic acid and the dry adipic acid phase of import
Same quality.
On current adipic acid production lines all at home, do not have to improve using particle filter is carried out to dry adipic acid
The report of production technology in terms of adipic acid product quality.
Summary of the invention
It is dry that particle filter raising is carried out the purpose of the present invention is to provide a kind of adipic acid grain size sieving device and using it
The method of dry adipic acid product quality.
Based on above-mentioned purpose, the present invention is adopted the following technical scheme that:
A kind of adipic acid grain size sieving device, including fluidized bed dryer, big material bin, source nitrogen, even wind device, separation chamber, whirlwind
Separator and packaging weighing-appliance, separation chamber are equipped with gas feed, material inlet, the outlet of selection by winnowing object and big granularity material outlet,
Fluidized bed dryer is connected by pipeline chain conveyor with big material bin top inlet, the material of big material bin outlet at bottom and separation chamber into
Mouth is connected, and source nitrogen is connected by pipeline with the import of even wind device, and the outlet of even wind device is connected with the gas feed of separation chamber, wind
Object outlet is selected to be connected by pipeline with the import of cyclone separator, cyclone separator is equipped with dust outlet and small grain size material goes out
Mouthful, dust outlet is connected by pipeline with the top of big material bin.
Further, the pipeline between source nitrogen and even wind device is equipped with nitrogen adjustment valve；The big material bin and separation chamber
Between pipeline be equipped with star-like blanking device, the material in big material bin is by star-like blanking device even into separation chamber.
Further, the big granularity material outlet of the separation chamber and the small grain size material outlet of cyclone separator are set respectively
There are the first packaging weighing-appliance and the second packaging weighing-appliance.
Further, separation chamber is hollow cylindrical body, and the diameter of separation chamber is 250mm(and star-like blanking device phase
With), the outlet end width of even wind device is about 220mm, height about 1mm.
The method that particle filter improves dry adipic acid product quality, packet are carried out using above-mentioned adipic acid grain size sieving device
Include following steps:
(1) adipic acid of moisture content 8-10% is added fluidized bed dryer and is dried at 70 ~ 90 DEG C to moisture content is 0.13
After ~ 0.2%, it is stored in big material bin, then by star-like blanking device even into separation chamber；
(2) nitrogen for 0.5 ~ 0.6MPa that source nitrogen provides enters even wind device after nitrogen adjustment valve depressurizes, and exports in even wind device
Obtain the nitrogen wind that wind speed is 3-6 meter per second；
(3) in separation chamber, nitrogen wind is contacted with the drying adipic acid of even drop down, under the blowing of nitrogen wind, by granularity <
The dry adipic acid of 0.4mm, water content 0.06 ~ 0.08% is blown into cyclone separator, granularity >=0.4mm, water content 0.06 ~ 0.08%
Big granularity is dried in the first packaging weighing-appliance that adipic acid relies on gravitational settling to fall directly into separation chamber lower part and obtains big granularity
Pack product；
(4) in cyclone separator after gas solid separation, by granularity 0.4-0.1mm, water content be 0.03 ~ 0.06% drying oneself
Diacid, which enters in the second packaging weighing-appliance, obtains small grain size packaging product, the granularity < 0.1mm that cyclone separator is isolated
Dust be back to big material bin, dedusting is gone together with the gas phase of big material bin.
Further, the weight ratio of small grain size packaging product and big granularity packaging product is 1:2.
Preferably, the purity of nitrogen is 99.99% in the source nitrogen, the blanking velocity of the star-like blanking device is 5 tons/
Hour.
It is classified the drying adipic acid of processing through the invention, since granule size is uniform, intergranular contact after packaging
Point largely reduces, and solves the problems, such as that dry adipic acid is easy agglomeration in storage, simultaneously because granule size is uniform, it is dry oneself
The mobility of diacid increases, and offers convenience for downstream production, and the addition of nitrogen keeps the water content in dry adipic acid lower, produces
Quality is further promoted.
Detailed description of the invention
Fig. 1 is the process flow chart of existing adipic acid；
Fig. 2 is the structural schematic diagram of adipic acid grain size sieving device of the present invention；
Fig. 3 be nitrogen pipeline, Air Heater, separation chamber connection structure top view；
Fig. 4 is the process flow chart of adipic acid particle filter of the present invention, wherein 1. big material bins, 2. star-like blanking devices, 3. fluidisations
Bed dryer, 4. source nitrogens, 5. nitrogen adjustment valves, 6. even wind devices, 7. separation chambers, 8. cyclone separators, 9. first packagings
Weighing-appliance, 10. second packaging weighing-appliances.
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with specific embodiments and the drawings, but not as
Limiting the scope of the invention.
Packaging weighing-appliance in the present invention is made of packaging bag and weigher, and packaging bag is located on the scale pan of weighing balance,
To make the material come out from discharge port be directly entered packaging bag, observed by weigher, when the material in packaging bag reaches certain
When one weight demands, directly packaging bag is packaged.
Embodiment 1
A kind of adipic acid grain size sieving device, as shown in Figures 2 and 3, including fluidized bed dryer 3, big material bin 1, source nitrogen 4,
Even wind device 6, separation chamber 7, cyclone separator 8 and packaging weighing-appliance, separation chamber 7 are equipped with gas feed, material inlet, selection by winnowing object
Outlet and big granularity material outlet, fluidized bed dryer 3 are connected by pipeline chain conveyor with 1 top inlet of big material bin, big material bin 1
Outlet at bottom is connected by pipeline with the material inlet of separation chamber 7, and source nitrogen 4 is connected by pipeline with the import of even wind device 6, even
The outlet of wind device 6 is connected with the gas feed of separation chamber 7, and the outlet of selection by winnowing object is connected by pipeline with the import of cyclone separator 8,
Cyclone separator 8 is equipped with dust outlet and small grain size material outlet, and dust outlet is connected by pipeline with the top of big material bin 1.
Further, the pipeline between source nitrogen 4 and even wind device 6 is equipped with nitrogen adjustment valve 5；The big material bin 1 and wind
Pipeline between room 7 is selected to be equipped with star-like blanking device 2, the material in big material bin 1 is by star-like blanking device 2 even into separation chamber
In 7.
Further, the small grain size material outlet difference of the big granularity material outlet and cyclone separator 8 of the separation chamber 7
Equipped with the first packaging weighing-appliance 9 and the second packaging weighing-appliance 10.
Further, separation chamber 7 is hollow cylindrical body, and the diameter of separation chamber 7 is 250mm, and the outlet end of even wind device 6 is wide
Degree is about 220mm, height about 1mm.
The method that particle filter improves dry adipic acid product quality, packet are carried out using above-mentioned adipic acid grain size sieving device
Include following steps:
(1) adipic acid of moisture content 8-10% is added fluidized bed dryer 3 and dried at 70 ~ 90 DEG C to moisture content and be
After 0.13 ~ 0.2%, it is stored in big material bin 1, adipic acid size distribution is that 0.2-0.6mm accounts for 80% or more, then passes through in big material bin 1
Star-like blanking device 2 is even into separation chamber 7；
(2) nitrogen for 0.5 ~ 0.6MPa that source nitrogen 4 provides enters even wind device 6(right end air outlet after the decompression of nitrogen adjustment valve 5
Wide L is 220mm, and high about 1mm can use 3 " pipe is shown in Fig. 3 in the specific connection that acquisition and separation chamber 7 are flattened in front), in even wind device
6 outlets obtain the nitrogen wind that wind speed is 3-6 meter per second；
(3) in separation chamber 7, nitrogen wind is contacted with the drying adipic acid of even drop down, under the blowing of nitrogen wind, by granularity <
The dry adipic acid of 0.4mm, water content 0.06 ~ 0.08% is blown into cyclone separator 8, granularity >=0.4mm, water content 0.06 ~ 0.08%
The dry adipic acid of big granularity fallen directly by gravitational settling obtained in the first packaging weighing-appliance 9 of 7 lower part of separation chamber it is big
Granularity packs product；
(4) in cyclone separator 8 after gas solid separation, by granularity 0.4-0.1mm, water content be 0.03 ~ 0.06% drying oneself
Diacid, which enters in the second packaging weighing-appliance 10, obtains small grain size packaging product, the granularity < that cyclone separator 8 is isolated
The dust of 0.1mm is back to big material bin 1 and achievees the purpose that dedusting；
(5) product is packed by control small grain size and big granularity packs the ratio that the weight ratio of product is 1:2 and separates journey to grasp
Degree.
Preferably, the purity of nitrogen is 99.99% in the source nitrogen 4, and the blanking velocity of the star-like blanking device 2 is 5
Ton/hour.
Treated by the method for the invention dries adipic acid product, the drying adipic acid product that prior art obtains, day
Produce the comparison of adipic acid product aspect of performance:
The drying adipic acid product of two types is obtained by the method, i.e., big granularity adipic acid product and small grain size adipic acid produce
Product, drying adipic acid product that we obtain both products and existing production technology produce dry adipic acid product daily in object
A comparison is done on material mobility and product water content, data are as follows:
1. material fluidity: by same package, product weight is that four kinds of products of 1000 ± 2kg respectively take three bags of samples, uses fork truck
It is hanging from the place 1.5 meters high of face to be hung in bottom, opens simultaneously the discharge port of lower part, with manual time-keeping, confirms every kind
It is the time of the empty bag of product, as a result as follows:
By testing discovery above, the dry big granularity product of adipic acid is being flowed than the drying adipic acid product produced with prior art
Raising is more in terms of dynamic property, and small grain size product mobility also has improvement, but raising is smaller, and big granularity adipic acid product is flowing
Property aspect with produce daily adipic acid product be equal.
2. the moisture of product: with being intended in three kinds of products while sampling, comparative analysis is done, as a result as follows:
Found by analysis: big granularity adipic acid product has with small grain size adipic acid product moisture content with former adipic acid product bright
Aobvious reduction, water content and import adipic acid product compare substantially without gap.
Claims (6)
1. a kind of adipic acid grain size sieving device, which is characterized in that including fluidized bed dryer, big material bin, source nitrogen, even wind
Device, separation chamber, cyclone separator and packaging weighing-appliance, separation chamber are equipped with gas feed, material inlet, selection by winnowing object outlet and big
Granularity material outlet, fluidized bed dryer are connected by pipeline chain conveyor with big material bin top inlet, and big material bin outlet at bottom is logical
Piping is connected with the material inlet of separation chamber, and source nitrogen is connected by pipeline with the import of even wind device, the outlet of even wind device with
The gas feed of separation chamber is connected, and the outlet of selection by winnowing object is connected by pipeline with the import of cyclone separator, and cyclone separator is equipped with
Dust outlet and small grain size material outlet, dust outlet are connected by pipeline with the top of big material bin.
2. adipic acid grain size sieving device according to claim 1, which is characterized in that the pipeline between source nitrogen and even wind device
It is equipped with nitrogen adjustment valve；Pipeline between the big material bin and separation chamber is equipped with star-like blanking device, the material in big material bin
By star-like blanking device even into separation chamber.
3. adipic acid grain size sieving device according to claim 1, which is characterized in that the big granularity material of the separation chamber goes out
The small grain size material outlet of mouth and cyclone separator is respectively equipped with the first packaging weighing-appliance and the second packaging weighing-appliance.
4. carrying out particle filter using any adipic acid grain size sieving device of claims 1 to 33 improves dry adipic acid
The method of product quality, which comprises the steps of:
(1) adipic acid of moisture content 8-10% is added fluidized bed dryer and is dried at 70 ~ 90 DEG C to moisture content is 0.13
After ~ 0.2%, it is stored in big material bin, then by star-like blanking device even into separation chamber；
(2) nitrogen for 0.5 ~ 0.6MPa that source nitrogen provides enters even wind device after nitrogen adjustment valve depressurizes, and exports in even wind device
Obtain the nitrogen wind that wind speed is 3-6 meter per second；
(3) in separation chamber, nitrogen wind is contacted with the drying adipic acid of even drop down, under the blowing of nitrogen wind, by granularity <
The dry adipic acid of 0.4mm, water content 0.06 ~ 0.08% is blown into cyclone separator, granularity >=0.4mm, water content 0.06 ~ 0.08%
Big granularity is dried in the first packaging weighing-appliance that adipic acid relies on gravitational settling to fall directly into separation chamber lower part and obtains big granularity
Pack product；
(4) in cyclone separator after gas solid separation, by granularity 0.4-0.1mm, water content be 0.03 ~ 0.06% drying oneself
Diacid, which enters in the second packaging weighing-appliance, obtains small grain size packaging product, the granularity < 0.1mm that cyclone separator is isolated
Dust be back to big material bin.
5. the method for improving dry adipic acid product quality by particle filter according to claim 4, which is characterized in that small
It is 1:2 that granularity, which packs product and the weight ratio of big granularity packaging product,.
6. the method for improving dry adipic acid product quality by particle filter according to claim 4, which is characterized in that institute
The purity for stating nitrogen in source nitrogen is 99.99%, and the blanking velocity of the star-like blanking device is 5 ton/hours.
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|---|---|---|---|
| CN201910620103.0A CN110314772B (en) | 2019-07-10 | 2019-07-10 | Method for improving quality of dried adipic acid product by utilizing particle size screening |
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| CN201910620103.0A CN110314772B (en) | 2019-07-10 | 2019-07-10 | Method for improving quality of dried adipic acid product by utilizing particle size screening |
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| CN110314772A true CN110314772A (en) | 2019-10-11 |
| CN110314772B CN110314772B (en) | 2021-02-26 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4299694A (en) * | 1980-08-25 | 1981-11-10 | The Direct Reduction Corporation | Method and apparatus for char separation from the discharge materials of an iron oxide reducing kiln |
| EP0982082A1 (en) * | 1998-08-21 | 2000-03-01 | Beloit Technologies, Inc. | Apparatus for separating mixed particulate material |
| CN102716857A (en) * | 2012-06-08 | 2012-10-10 | 清华大学 | Pneumatic particle size classifying device for solid particles |
| CN202687388U (en) * | 2012-07-18 | 2013-01-23 | 中国天辰工程有限公司 | Conveying system for industrial solid adipic acid |
| CN104550026A (en) * | 2014-12-18 | 2015-04-29 | 杨连明 | Method for sorting limestone chips by utilizing fluidized bed |
| CN206103397U (en) * | 2016-09-27 | 2017-04-19 | 山东华鲁恒升化工股份有限公司 | Adipic acid purification crystallization device |
-
2019
- 2019-07-10 CN CN201910620103.0A patent/CN110314772B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4299694A (en) * | 1980-08-25 | 1981-11-10 | The Direct Reduction Corporation | Method and apparatus for char separation from the discharge materials of an iron oxide reducing kiln |
| EP0982082A1 (en) * | 1998-08-21 | 2000-03-01 | Beloit Technologies, Inc. | Apparatus for separating mixed particulate material |
| CN102716857A (en) * | 2012-06-08 | 2012-10-10 | 清华大学 | Pneumatic particle size classifying device for solid particles |
| CN202687388U (en) * | 2012-07-18 | 2013-01-23 | 中国天辰工程有限公司 | Conveying system for industrial solid adipic acid |
| CN104550026A (en) * | 2014-12-18 | 2015-04-29 | 杨连明 | Method for sorting limestone chips by utilizing fluidized bed |
| CN206103397U (en) * | 2016-09-27 | 2017-04-19 | 山东华鲁恒升化工股份有限公司 | Adipic acid purification crystallization device |
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| CN110314772B (en) | 2021-02-26 |
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