CN107032146A - A kind of solid phosgene sheeting device and method - Google Patents
A kind of solid phosgene sheeting device and method Download PDFInfo
- Publication number
- CN107032146A CN107032146A CN201710288772.3A CN201710288772A CN107032146A CN 107032146 A CN107032146 A CN 107032146A CN 201710288772 A CN201710288772 A CN 201710288772A CN 107032146 A CN107032146 A CN 107032146A
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- finished product
- solid phosgene
- sheeting
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- conveyer belt
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/20—Auxiliary treatments, e.g. aerating, heating, humidifying, deaerating, cooling, de-watering or drying, during loading or unloading; Loading or unloading in a fluid medium other than air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
- B65G69/045—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials with scraping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/12—Sieving bulk materials during loading or unloading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/14—Pulverising loaded or unloaded materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/042—Granular material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a kind of solid phosgene sheeting device, it includes constant temperature material trough, coldplate and the semi-finished product conveyer belt set gradually；Wherein, the bottom side of the constant temperature material trough is provided with discharge port, and the discharge port is located at the top of the coldplate, so that material is flowed to the surface of the coldplate by the discharge port；The mobile scraping blade device for moving solid phosgene semi-finished product is provided with the coldplate；Fixed scraping blade device is provided with the semi-finished product conveyer belt, the fixed scraping blade device is used for break down solids phosgene semi-finished product and solid phosgene finished product is made.The solid phosgene sheeting device design science, production efficiency can be effectively improved, ensured product quality stability.The present invention also provides the method for preparing solid phosgene sheeting using the solid phosgene sheeting device simultaneously.
Description
Technical field
The present invention relates to the preparation of solid phosgene, in particular it relates to a kind of solid phosgene sheeting device and method.
Background technology
Triphosgene is also known as solid phosgene, and chemical name is double（Trichloromethyl）Carbonic ester.Triphosgene is white crystal, there is class
Like the smell of phosgene, molecular weight 296.75,78~81 DEG C of fusing point, boiling point is 203~206 DEG C, and density of solid is 1.78 g/cm3,
Melt the g/cm of density 1.6293, dissolve in the organic solvents such as ether, tetrahydrofuran, benzene, ethane, chloroform.The industry of solid phosgene
The research and application of metaplasia production are just progressively grown up after last century the eighties, domestic industrial production and are largely made
With only less than the history of 20 years.
At present, the industrialized preparing process of solid phosgene be use the tower production technology of intermittent glass, the technique be
It is disposable in glass reaction tower to add dimethyl carbonate, chlorine is then passed to, with general ultraviolet lamp source initiation reaction, and is added
Organic initiators, reaction temperature 65~1050C, after the completion of reaction, product is released, natural cooling crystallization, hand breaking packaging, gas
Taste is than larger, and production environment is severe, the serious health for threatening workman.Production efficiency is relatively low simultaneously, product quality less stable,
It is easily caused during the use of downstream producer and occurs security incident.
In order to solve the problem of above is present, people are seeking a kind of preferable technical solution always.
The content of the invention
In view of this, the present invention provide a kind of design science, it is simple to operate, production efficiency can be effectively improved, ensure production
The solid phosgene sheeting device and method of quality stability, to solve the above problems.
Specifically, the present invention is adopted the following technical scheme that：
A kind of solid phosgene sheeting device, it includes constant temperature material trough, coldplate and the semi-finished product conveyer belt set gradually；Its
In, the bottom side of the constant temperature material trough is provided with discharge port, and the discharge port is located at the top of the coldplate, so as to thing
Material is flowed to the surface of the coldplate by the discharge port；It is provided with the coldplate for moving solid phosgene semi-finished product
Mobile scraping blade device；Fixed scraping blade device is provided with the semi-finished product conveyer belt, the fixed scraping blade device is used for break down solids phosgene
Solid phosgene finished product is made in semi-finished product.
Based on above-mentioned, guide rail that the mobile scraping blade device includes being arranged on the coldplate, it is arranged on the guide rail
Mobile wiper blade holder, the mobile scraping blade being articulated with the wiper blade holder, the movement in the mobile wiper blade holder
Scraping blade limiting plate and the mobile wiper blade holder limited block at the two ends for being fixed on the guide rail.
Based on above-mentioned, the fixed scraping blade device includes rotating shaft, is arranged on the fixation scraping blade of the rotating shaft side and is arranged on
The sawtooth blade of the rotating shaft opposite side, the sawtooth blade around the rotating shaft with the semi-finished product conveyer belt into 0~180 °
Angle between rotate, the fixed scraping blade is fixed on the semi-finished product conveyer belt.
Based on above-mentioned, the fixed scraping blade device further comprises sawtooth blade drive shaft, and the sawtooth blade drive shaft is used
Rotated in driving the sawtooth blade around the rotating shaft in the semi-finished product conveyer belt between 0~180 ° of angle.
Based on above-mentioned, the side of the discharge port, which is provided with slideway, the slideway, to be provided with for adjusting the discharging
The sideboard of the size of mouth.
Based on above-mentioned solid phosgene sheeting device, it further comprises being arranged at the concussion below the semi-finished product conveyer belt
Bed, the concussion bed includes the screen cloth being made up of 0.5~5 cm sieve aperture, and the amplitude of vibration of the screen cloth is 5~50 mm.
Based on above-mentioned solid phosgene sheeting device, it further comprises the finished product transmission below the concussion bed
Band.
Based on above-mentioned solid phosgene sheeting device, it further comprises positioned at discharge bin below the finished product conveyer belt,
The charging aperture of the discharge bin is located at immediately below the afterbody of the finished product conveyer belt.
A kind of solid phosgene sheeting method, the solid phosgene sheeting method is entered using above-mentioned solid phosgene sheeting device
Row solid phosgene sheeting, the solid phosgene sheeting method comprises the following steps：
Solid phosgene liquid is added in the constant temperature material trough and 78~85 DEG C are heated to, institute is flow to by the discharge port
State and cooled down on coldplate, obtain solid phosgene semi-finished product；Using the mobile scraping blade device by the solid phosgene semi-finished product
Push away and fall on the semi-finished product conveyer belt；
Solidification obtains solid phosgene to the solid phosgene semi-finished product completely on the semi-finished product conveyer belt, is scraped using the fixation
Piece device crushes the solid phosgene, obtains solid phosgene sheeting finished product.
Based on above-mentioned, the solid phosgene sheeting device further comprises below semi-finished product transmission tail
Concussion bed, positioned at it is described concussion bed below finished product conveyer belt and positioned at the finished product transmit tail below discharge bin；
The solid phosgene sheeting method further comprises following steps：The solid phosgene sheeting finished product enters the concussion bed
Upper progress concussion Screening Treatment, the solid phosgene sheeting finished product after concussion screening is sent to institute by the finished product conveyer belt
Discharge bin is stated to be dispensed.
Compared with prior art, the present invention is with prominent substantive distinguishing features and significantly progressive, specifically, of the invention
The solid phosgene sheeting device of offer, can be controlled by adjusting the size of the discharge port and the angle of inclination of the coldplate
Solid phosgene liquid flow velocity processed, the mobile scraping blade device can be such that solid phosgene uniformly sprawls, and realize uniform cooling；May be used also
To prevent solid phosgene semi-finished product from scabbing on the cooling plate, automatic clear scar is carried out；The sawtooth blade of the fixed scraping blade device it is upper
Side is zigzag, solid phosgene can be crushed and prevented to block, improve production efficiency；The concussion bed can be to solid
Body phosgene is screened to control the sheeting size of solid phosgene, it is ensured that the stability of product quality；Simultaneously solid phosgene half into
Product and solid phosgene finished product are conveyed by conveyer belt, greatly reduce labor intensity.The present invention also provides and applies the solid
The method that phosgene sheeting device carries out solid phosgene sheeting, this method is simple to operate, easy to control, has broad application prospects.
Brief description of the drawings
Fig. 1 is the structural representation for the solid phosgene sheeting device that the present invention is provided.
In figure：1. constant temperature material trough；2. discharge port；3. coldplate；4. move scraping blade device；5. semi-finished product conveyer belt；6. it is solid
Determine scraping blade device；7. shake bed；8. finished product conveyer belt；9. discharge bin.
Embodiment
Below by embodiment, technical scheme is described in further detail.
Embodiment 1
As shown in figure 1, a kind of solid phosgene sheeting device, it include frame and the constant temperature material trough 1 being installed in the frame,
Coldplate 3, semi-finished product conveyer belt 5, finished product conveyer belt 8 and discharge bin 9；The bottom side of the constant temperature material trough 1, which is provided with, unloads
Material mouth 2, the coldplate 3 is located at the lower section of the position of the discharge port 2, the bottom of the constant temperature material trough 1 and the cooling
The head of plate 3 is connected, so that material is flowed to the surface of the coldplate 3 by the discharge port 2；Set on the coldplate 3
There is mobile scraping blade device 4；The semi-finished product conveyer belt 5, the semi-finished product conveyer belt 5 are provided with below the afterbody of the coldplate 3
Afterbody be provided with below fixed scraping blade device 6, the afterbody of the semi-finished product conveyer belt 5 and be provided with concussion bed 7, the finished product is passed
Band 8 is sent to be located at the lower section of the concussion bed 7, under the charging aperture of the discharge bin 9 is located at the afterbody of the finished product conveyer belt 8 just
Side.
Further, can according to circumstances adjust makes the coldplate 3 be 0~90 ° tilted in the angle with horizontal direction；
So as to flowing velocity of the control material on the coldplate 3.
Further, the mobile scraping blade device 4 includes wiper blade holder and the mobile scraping blade being installed in the wiper blade holder；
The both sides correspondence wiper blade holder of the coldplate 3 is provided with guide rail, so that the mobile scraping blade is moved back along the guide rail
Dynamic, the two ends of the guide rail are respectively arranged with limited block；The mobile scraping blade and the transverse axis of the upper end of the wiper blade holder are hinged,
The correspondence mobile scraping blade is provided with limiting plate on the transverse axis, so that the mobile scraping blade is moved from the head of the coldplate 3
Move into the tail course of the coldplate 3, the mobile scraping blade is vertical with the coldplate 3；The mobile scraping blade is from described
The afterbody of coldplate 3 is moved to during the head of the coldplate 3, and the mobile scraping blade is less than with the angle of coldplate 3
90 degree, cooled down so as to which the liquid on coldplate 3 is struck off.
Further, the fixed scraping blade device 6 includes fixed support, the fixation scraping blade being installed on the fixed support；
It is provided with the upside of the fixed scraping blade in rotating shaft, the rotating shaft and is provided with sawtooth blade, the correspondence sawtooth blade is provided with
Drive device, so as to drive the sawtooth blade can around the axis of rotation with the semi-finished product conveyer belt into 0~180 °
Rotated between angle；To carry out cutting and grinding to solid material, promoted along with the fixed scraping blade, it is to avoid material is blocked up
Plug.
Further, the concussion bed 7 includes screen frame, the screen cloth being fixed on the screen frame and is installed on institute
State the vibrator on screen cloth；The screen cloth is located at the surface on the head of the finished product conveyer belt 8, so as to the thing after screening
Material falls into the finished product conveyer belt 8 and conveyed.
Further, the size of the sieve aperture of the screen cloth can be set between 0.5~5 cm according to demand, in 5~50 mm
Between select the amplitude of the screen cloth.
Further, the side of the discharge port 2 is provided with slideway, the slideway and is provided with sideboard, to move
The dynamic sideboard adjusts the size of the discharge port with the rate of outflow of control material.
Embodiment 2
The present embodiment provides a kind of solid phosgene sheeting method, and what the solid phosgene sheeting method Application Example 1 was provided consolidates
Body phosgene sheeting device carries out solid phosgene sheeting, and the solid phosgene sheeting method comprises the following steps：
Solid phosgene liquid is added in the constant temperature material trough 1,78~85 DEG C are heated to, adjust the discharge port 2 size,
The angle of inclination of the coldplate 3, makes the solid phosgene liquid flow on the coldplate 3, uses the mobile scraping blade device 4
Strike off, cooled down, obtain solid phosgene semi-finished product in uniform thickness；The mobile scraping blade device 4 is reused by the solid light
Gas semi-finished product, which are pushed away, to be fallen on the semi-finished product conveyer belt 5；Wherein, the rate travel of mobile scraping blade is in the mobile scraping blade device 4
1.2 m/min, 30 ° of the angle of the coldplate 3 and horizontal plane；
Solidification obtains solid phosgene to the solid phosgene semi-finished product completely on the semi-finished product conveyer belt 5, uses the fixation
Scraping blade device 6 shreds the solid phosgene, obtains solid phosgene sheeting finished product；
The solid phosgene sheeting finished product fall into it is described concussion bed 7 on, screened, the solid phosgene sheeting after screening into
Product, which fall into the finished product conveyer belt 8 and are sent to the discharge bin 9, to be dispensed；Wherein, the solid can be set to scrape according to demand
The slewing rate of sawtooth blade is 15 °/min in piece device 6；The sieve aperture of the concussion bed 7 is 1.2 cm, and amplitude is 10 mm.
Embodiment 3
The present embodiment provides a kind of solid phosgene sheeting method, and the present embodiment and the difference of embodiment 2 are：The cooling
Plate 3 is 20 ° with horizontal plane angle, and the rate travel of the mobile scraping blade device 4 is saw in 0.8 m/min, the fixed scraping blade device 6
The slewing rate of teeth cutter blade is 10 °/min, and the sieve aperture of the concussion bed 7 is 1.0 cm, and amplitude is 8 mm.
Embodiment 4
The present embodiment provides a kind of solid phosgene sheeting method, and the present embodiment and the difference of embodiment 2 are：The cooling
Plate 3 is 25 ° with horizontal plane angle, and the rate travel of the mobile scraping blade device 4 is saw in 1.8 m/min, the fixed scraping blade device 6
The slewing rate of teeth cutter blade is 35 °/min, and the sieve aperture of the concussion bed 7 is 4.0 cm, and amplitude is 15 mm.
Embodiment 5
The present embodiment provides a kind of solid phosgene sheeting method, and the present embodiment and the difference of embodiment 2 are：The cooling
Plate 3 is 40 ° with horizontal plane angle, and the rate travel of the mobile scraping blade device 4 is saw in 2.5 m/min, the fixed scraping blade device 6
The slewing rate of teeth cutter blade is 45 °/min, and the sieve aperture of the concussion bed 7 is 3.0 cm, and amplitude is 30 mm.
Embodiment 6
The present embodiment provides a kind of solid phosgene sheeting method, and the present embodiment and the difference of embodiment 2 are：The cooling
Plate 3 is 60 ° with horizontal plane angle, and the rate travel of the mobile scraping blade device 4 is saw in 2.6 m/min, the fixed scraping blade device 6
The slewing rate of teeth cutter blade is 10 °/min, and the sieve aperture of the concussion bed 7 is 1.0 cm, and amplitude is 8 mm.
Embodiment 7
The present embodiment provides a kind of solid phosgene sheeting method, and the present embodiment and the difference of embodiment 2 are：The cooling
Plate 3 is 80 ° with horizontal plane angle, and the rate travel of the mobile scraping blade device 4 is saw in 3.0 m/min, the fixed scraping blade device 6
The slewing rate of teeth cutter blade is 30 °/min, and the sieve aperture of the concussion bed 7 is 5.0 cm, and amplitude is 50 mm.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among claimed technical scheme scope of the invention.
Claims (10)
1. a kind of solid phosgene sheeting device, it is characterised in that constant temperature material trough that it includes setting gradually, coldplate and half into
Product conveyer belt；Wherein, the bottom side of the constant temperature material trough is provided with discharge port, and the discharge port is located at the coldplate
Top, so that material is flowed to the surface of the coldplate by the discharge port；It is provided with the coldplate for moving solid
The mobile scraping blade device of phosgene semi-finished product；Fixed scraping blade device is provided with the semi-finished product conveyer belt, the fixed scraping blade device is used for
Solid phosgene finished product is made in break down solids phosgene semi-finished product.
2. solid phosgene sheeting device according to claim 1, it is characterised in that the mobile scraping blade device includes being arranged on
Guide rail on the coldplate, the mobile wiper blade holder being arranged on the guide rail, the movement being articulated with the wiper blade holder
The mobile scraping blade of scraping blade, the mobile scraping blade limiting plate in the mobile wiper blade holder and the two ends for being fixed on the guide rail
Support limited block.
3. solid phosgene sheeting device according to claim 1 or 2, it is characterised in that the fixed scraping blade device includes turning
Axle, the fixation scraping blade for being arranged on the rotating shaft side and the sawtooth blade for being arranged on the rotating shaft opposite side, the sawtooth blade
Rotated around the rotating shaft in the semi-finished product conveyer belt between 0~180 ° of angle, the fixed scraping blade is fixed on described
On semi-finished product conveyer belt.
4. solid phosgene sheeting device according to claim 3, it is characterised in that the fixed scraping blade device further comprises
Sawtooth blade drive shaft, the sawtooth blade drive shaft be used for drive the sawtooth blade around the rotating shaft with the semi-finished product
Conveyer belt is rotated between 0~180 ° of angle.
5. solid phosgene sheeting device according to claim 4, it is characterised in that the side of the discharge port is provided with cunning
The sideboard of size for adjusting the discharge port is installed in road, the slideway.
6. the solid phosgene sheeting device according to claim 4 or 5, it is characterised in that it further comprises being arranged at institute
The concussion bed below semi-finished product conveyer belt is stated, the concussion bed includes the screen cloth being made up of 0.5~5 cm sieve aperture, the screen cloth
Amplitude of vibration be 5~50 mm.
7. solid phosgene sheeting device according to claim 6, it is characterised in that it further comprises being located at the concussion
Finished product conveyer belt below bed.
8. solid phosgene sheeting device according to claim 7, it is characterised in that it further comprises being located at the finished product
Discharge bin below conveyer belt, the charging aperture of the discharge bin is located at immediately below the afterbody of the finished product conveyer belt.
9. a kind of solid phosgene sheeting method, it is characterised in that described in the solid phosgene sheeting method application claim 1
Solid phosgene sheeting device carries out solid phosgene sheeting, and the solid phosgene sheeting method comprises the following steps：
Solid phosgene liquid is added in the constant temperature material trough and 78~85 DEG C are heated to, institute is flow to by the discharge port
State and cooled down on coldplate, obtain solid phosgene semi-finished product；Using the mobile scraping blade device by the solid phosgene semi-finished product
Push away and fall on the semi-finished product conveyer belt；
Solidification obtains solid phosgene to the solid phosgene semi-finished product completely on the semi-finished product conveyer belt, is scraped using the fixation
Piece device crushes the solid phosgene, obtains solid phosgene sheeting finished product.
10. solid phosgene sheeting method according to claim 9, it is characterised in that the solid phosgene sheeting device enters
One step include be located at the semi-finished product transmit tail below concussion bed, positioned at it is described concussion bed below finished product conveyer belt and
The discharge bin below tail is transmitted positioned at the finished product；The solid phosgene sheeting method further comprises following steps：
The solid phosgene sheeting finished product, which is entered, carries out concussion Screening Treatment, the solid light after concussion screening on the concussion bed
Depressed finished product is sent to the discharge bin by the finished product conveyer belt and dispensed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288772.3A CN107032146B (en) | 2017-04-27 | 2017-04-27 | Solid phosgene sheeting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288772.3A CN107032146B (en) | 2017-04-27 | 2017-04-27 | Solid phosgene sheeting device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107032146A true CN107032146A (en) | 2017-08-11 |
| CN107032146B CN107032146B (en) | 2023-08-08 |
Family
ID=59536696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710288772.3A Active CN107032146B (en) | 2017-04-27 | 2017-04-27 | Solid phosgene sheeting device and method |
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| Country | Link |
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| CN (1) | CN107032146B (en) |
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| CN205687815U (en) * | 2016-06-16 | 2016-11-16 | 山东滨州华创金属有限公司 | A kind of fluorine slag quick solidification apparatus |
| CN205889644U (en) * | 2016-08-08 | 2017-01-18 | 新疆新宸环保科技股份有限公司 | PVC board recovery system |
| CN206782902U (en) * | 2017-04-27 | 2017-12-22 | 平顶山市神鹰化工科技有限公司 | A kind of solid phosgene sheeting device |
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2017
- 2017-04-27 CN CN201710288772.3A patent/CN107032146B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438634A (en) * | 1982-11-05 | 1984-03-27 | General Mills, Inc. | Freeze concentration apparatus |
| CN2459083Y (en) * | 2000-03-17 | 2001-11-14 | 张建 | Disintegrator |
| CN2467498Y (en) * | 2001-01-16 | 2001-12-26 | 唐山南光燕山轻钢结构工程有限公司 | Sodium silicate solution curing forming conveyor |
| CN103949082A (en) * | 2014-04-25 | 2014-07-30 | 涂海军 | Double-cooling flowing crystallization device |
| CN204364927U (en) * | 2014-11-28 | 2015-06-03 | 泰州永博生化制品有限公司 | A kind of non-iron aluminium sulfate crystallization apparatus |
| CN205687815U (en) * | 2016-06-16 | 2016-11-16 | 山东滨州华创金属有限公司 | A kind of fluorine slag quick solidification apparatus |
| CN205889644U (en) * | 2016-08-08 | 2017-01-18 | 新疆新宸环保科技股份有限公司 | PVC board recovery system |
| CN206782902U (en) * | 2017-04-27 | 2017-12-22 | 平顶山市神鹰化工科技有限公司 | A kind of solid phosgene sheeting device |
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| Publication number | Publication date |
|---|---|
| CN107032146B (en) | 2023-08-08 |
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