CN106500467B - Drying device for granulated water-soluble initiator - Google Patents
Drying device for granulated water-soluble initiator Download PDFInfo
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- CN106500467B CN106500467B CN201611188062.5A CN201611188062A CN106500467B CN 106500467 B CN106500467 B CN 106500467B CN 201611188062 A CN201611188062 A CN 201611188062A CN 106500467 B CN106500467 B CN 106500467B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- 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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
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- 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
- F26B25/006—Separating volatiles, e.g. recovering solvents from dryer exhaust gases
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- 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
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a drying device for granulated water-soluble initiator, which is characterized by comprising a particulate matter collecting container, wherein a screen is arranged at the middle lower part in the particulate matter collecting container; particulate matter collection container is interior, the below of screen cloth is provided with a hot-air distribution pipe, be provided with a plurality of hot-air distribution outlet on the hot-air distribution pipe, hot-air distribution pipe with the inboard of air intake is connected. The damage degree of the particles in the whole process is almost zero, and the hardness of the particles which reach the product content requirement after drying is greatly increased. Convenient conditions are added for the next packaging.
Description
Technical Field
The invention relates to the technical field of preparation of water-soluble initiators, and particularly relates to a drying device for granulated water-soluble initiators.
Background
The WSP-56 water-soluble initiator is easy to contact with skin to cause allergy, and foreign customers propose the requirement of reducing dust in the using process of the WSP-56 water-soluble initiator. The WSP-56 product has the physical characteristics of light specific gravity, fine particles in the appearance of the finished product, easy dust raising, and poor charging fluidity, and the only solution is to prepare fine dust into particles which do not influence the use of customers, greatly improve the fluidity of materials and improve the charging quality.
Generally, the granulation is carried out in two ways: one is an extrusion type, and the other is a rolling type.
The extrusion type is that the material is put in a granulator container and is sent to a specially-made orifice plate through a hydraulic or spiral propeller, the material forms a cylinder shape after passing through the orifice plate by the compression resistance formed by the round holes of the orifice plate and forms a cylinder shape particle with a certain length under the action of a cutter or gravity, and the size of the particle diameter is determined by the aperture of the orifice plate.
The rolling system is that a pair of rolling rods are fully distributed with grooves, and when materials pass through the rotating rolling rods, the materials are compressed into a round particle shape by two semicircular grooves with opposite symmetrical surfaces under the action of the grooves of the rotating rolling rods.
However, in any case, during the manufacturing process, the material dust must be pressed during the process, eventually forming the desired particle shape.
In the general granulating process, the granulating process of the materials has two factors, namely, the materials generate larger heat in the process by virtue of a strong compression ratio to form a micro-melting condition instantly, the materials are integrated together to form granules, and drying is not needed after the granulating is finished. Secondly, a certain proportion of adhesive is added into the dry materials, the materials are integrated into particles by utilizing the pressure and temperature generated in the granulation process of the adhesive, and the materials are granulated and do not need to be dried. However, both of the two methods are not suitable for the WSP-56 water-soluble initiator, because the WSP-56 water-soluble initiator is a heat-sensitive substance, the decomposition temperature is low, the water-soluble initiator is easy to combust or even explode in the decomposition process, and toxic oxynitride and hydrogen chloride smoke are generated after decomposition.
After the granulation by the above granulation method, the particles are dried by a conventional method, and the degree of breakage of the particles is increased.
Disclosure of Invention
The invention aims to solve the technical problem of particle breakage in the conventional drying method for granulating the existing water-soluble initiator, and provides a drying device for granulating the water-soluble initiator. Convenient conditions are added for the next packaging.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a drying device for granulated water-soluble initiator comprises a particle collection container, wherein a screen is arranged at the middle lower part in the particle collection container, a material inlet and outlet is arranged at the top of the particle collection container, a cover is covered on the material inlet and outlet, and an air inlet are respectively arranged at the upper part and the lower part of the wall of the particle collection container; particulate matter collection container is interior, the below of screen cloth is provided with a hot-air distribution pipe, be provided with a plurality of hot-air distribution outlet on the hot-air distribution pipe, hot-air distribution pipe with the inboard of air intake is connected.
In a preferred embodiment of the present invention, the system further comprises an air storage tank, a first condenser, a steam-water separator, and a gas heating tank, an outlet of the air storage tank is connected to an air inlet of the first condenser through a pipeline, an air outlet of the first condenser is connected to an air inlet of the steam-water separator through a pipeline, an air outlet of the steam-water separator is connected to a cold air inlet of the gas heating tank through a pipeline, and a hot air outlet of the gas heating tank is connected to an air inlet of the particulate matter collecting container through a pipeline.
In a preferred embodiment of the invention, the system further comprises a second condenser, a gas-liquid separator and an induced draft fan, wherein an induced draft inlet on the second condenser is connected with an induced draft opening on the particle collecting container through a pipeline, an induced draft outlet on the second condenser is connected with a gas-liquid inlet on the gas-liquid separator through a pipeline, and a gas outlet on the gas-liquid separator is connected with the induced draft fan through a pipeline.
In a preferred embodiment of the invention, the particulate collection vessel is made of stainless steel.
In a preferred embodiment of the invention, the screen is a stainless steel screen.
In a preferred embodiment of the present invention, in order to prevent static phenomena and flying conditions of partial dust production which may be generated by gas flow friction during the drying process, the particle collection container and a pipeline connected with an air inlet and an air inlet on the particle collection container are connected with an electrostatic grounding device.
The damage degree of the particles in the whole process of the invention is almost zero, and the hardness of the particles which can reach the content requirement of the product after drying is greatly increased. Convenient conditions are added for the next packaging.
Drawings
FIG. 1 is a schematic view of the structure of a drying apparatus for granulating the water-soluble initiator of the present invention.
Detailed Description
Referring to fig. 1, the drying device for granulating the water-soluble initiator includes a particulate matter collecting container 100, a gas storage tank 200, condensers 300, 400, a steam-water separator 500, a gas heating tank 600, a gas-liquid separator 700, and an induced draft fan 800.
The particle collecting container 100 is made of stainless steel, a stainless steel screen 110 is arranged at the middle lower part of the particle collecting container, a material inlet and outlet 120 is arranged at the top of the particle collecting container 100, and a cover 130 is covered on the material inlet and outlet 120.
The upper part and the lower part of the wall of the particle collection container 100 are respectively provided with an induced draft port 140 and an air inlet 150; a hot air distribution pipe 160 is arranged in the particle collection container 100 and below the stainless steel screen 110, a plurality of hot air distribution outlets are arranged on the hot air distribution pipe 160, and the hot air distribution pipe 160 is connected with the inner side of the air inlet 150.
The air storage tank 200 is connected with an air compressor, the outlet 210 of the air storage tank 200 is connected with the air inlet 310 of the condenser 300 through a pipeline 910, the air outlet 320 of the condenser 300 is connected with the air inlet 510 of the steam-water separator 500 through a pipeline 920, the air outlet 520 of the steam-water separator 500 is connected with the cold air inlet 610 of the gas heating tank 600 through a pipeline 930, and the hot air outlet 620 of the gas heating tank 600 is connected with the air inlet 150 of the particulate matter collection container 100 through a pipeline 940.
An induced air inlet 410 on the condenser 400 is connected with an induced air port 140 on the particulate matter collecting container 100 through a pipeline 950, an induced air outlet 420 on the condenser 400 is connected with a gas-liquid inlet 710 on the gas-liquid separator 700 through a pipeline 960, and a gas outlet 720 on the gas-liquid separator 700 is connected with an induced air fan 800 through a pipeline 970.
In order to prevent the electrostatic phenomenon and the flying condition of part of dust production which may be generated by the gas flow friction in the drying process, the particle collection container 100 and the pipelines 950 and 940 connected with the air inducing opening 140 and the air inlet 150 on the particle collection container 100 are connected with an electrostatic grounding device.
The working principle of the invention is as follows:
the induced draft 140 and the air inlet 150 of the particle collection container 100 filled with the particles granulated by the water-soluble initiator are connected with the gas heating tank 600 and the condenser 400 through pipelines 940 and 950, and the gas storage tank 200, the condenser 300, the steam-water separator 500, the gas heating tank 600, the gas-liquid separator 700 and the induced draft fan 800 are connected with relevant pipelines at the same time. Meanwhile, the particle collection container 100 is connected with the electrostatic grounding devices on the pipelines 950 and 940 connected with the induced draft opening 140 and the air inlet 150 on the particle collection container 100.
Firstly, the induced draft fan 800 is started, then the liquid inlet valves of the condensers 300 and 400 are in a slightly opened state, the liquid outlet valves are normally opened, and the gas outlet valves of the gas storage tank 200 are opened (the pressure is adjusted to be within the range of 0.05MPa-0.08MPa through the regulating valve of the gas heating tank 600 at the beginning, generally, 3 gas heating tanks 600 are provided, so that each outlet is provided with a corresponding pressure gauge, the exhaust pressure is ensured to be consistent, and three particulate matter collecting containers 100 are also provided.
After the system pressure is adjusted and balanced, a heating rod power supply of the gas heating tank 600 is started, the temperature is controlled to be 40 ℃ automatically, when compressed air enters the condenser 300 from an opened exhaust valve and contacts with a refrigerant on a heat exchange surface, a condensation point is generated, when the ambient temperature is above 30 ℃, the temperature of gas entering the gas storage tank 200 is about 40 ℃, so that the temperature of the refrigerant entering the condenser 300 is about-10 ℃ sometimes, in order to improve the heat exchange effect, the gap between the plate walls is small, and if the temperature of the condensed water is too low, the condensed water is easy to be solidified into solid ice, and a gap channel is blocked. Therefore, the flow of the refrigerant medium is controlled, the air and part of water passing through the condenser 300 enter the steam-water separator 500, the water is separated out and stored in a barrel, the relatively dry gas is sent into the gas heating tank 600 to be heated, the heated gas with the temperature of about 40 ℃ enters the hot air distribution pipe 160 at the bottom of the particulate matter collection container 100 after pressure adjustment, the heated gas is diffused to the bottom of the particulate matter collection container 100 through a plurality of hot air distribution outlets on the hot air distribution pipe 160, the volatile solvent gas is taken away through the particle gaps formed by the stainless steel screen 110 slowly penetrating through the soluble initiator for granulation, the heated gas enters the condenser 400 under the suction action of the induced draft fan 800 to be condensed into liquid, the solvent has certain volatility, so that the condenser 400 is sufficiently opened to fully condense the solvent, the air is separated out through the steam-liquid separator 700, the steam inlet pressure controlled at present is between 0.05mMPa and 0.08MPa, the pipe diameter of the steam inlet pipe is DN15, the steam inlet enters the bottom of the steam-liquid separator 700, the cold quantity of the steam-water is diffused through a plurality of small holes on the pipe diameter, the air compressor, the air dust collection container can not be generated, the small particles, the air compressor at present, the air compressor can not only be collected for about 1 hour, and the dry particulate matter, and the dry particles within about 6 hours.
Claims (4)
1. A drying method based on a drying device after granulation of a water-soluble initiator comprises a particle collection container, wherein a screen is arranged at the middle lower part in the particle collection container, a material inlet and outlet is arranged at the top of the particle collection container, a cover is covered on the material inlet and outlet, and an air inlet are respectively arranged at the upper part and the lower part of the wall of the particle collection container; a hot air distribution pipe is arranged in the particle collection container and below the screen, a plurality of hot air distribution outlets are arranged on the hot air distribution pipe, and the hot air distribution pipe is connected with the inner side of the air inlet;
the particle collecting device is characterized by further comprising an air storage tank, a first condenser, a steam-water separator and a gas heating tank, wherein an outlet of the air storage tank is connected with an air inlet of the first condenser through a pipeline, an air outlet of the first condenser is connected with an air inlet of the steam-water separator through a pipeline, an air outlet of the steam-water separator is connected with a cold air inlet on the gas heating tank through a pipeline, and a hot air outlet on the gas heating tank is connected with an air inlet of the particle collecting container through a pipeline;
the particle collection device is characterized by also comprising a second condenser, a gas-liquid separator and an induced draft fan, wherein an induced draft inlet on the second condenser is connected with an induced draft port on the particle collection container through a pipeline, an induced draft outlet on the second condenser is connected with a gas-liquid inlet on the gas-liquid separator through a pipeline, and a gas outlet on the gas-liquid separator is connected with the induced draft fan through a pipeline; the method is characterized in that:
the drying method of the drying device for the granulated water-soluble initiator comprises the following steps:
firstly, starting an induced draft fan, then enabling liquid inlet valves on a first condenser and a second condenser to be in a slightly opened state, enabling a liquid outlet valve to be in a normally opened state, slightly opening an exhaust valve of a gas storage tank, and adjusting the pressure to be in a range of 0.05MPa-0.08MPa through a regulating valve of a gas heating tank;
after the system pressure is adjusted and balanced, a heating rod power supply of a gas heating tank is started, the temperature is controlled to be 40 ℃ automatically, when compressed air enters a first condenser from an opened exhaust valve and contacts with a refrigerant on a heat exchange surface to generate a condensation point, when the ambient temperature is above 30 ℃, the temperature of the gas entering a gas storage tank is 40 ℃, the temperature of the refrigerant entering the first condenser is-10 ℃, the air and part of water passing through the first condenser enter a steam-water separator, the water is separated out and stored in a barrel, the relatively dry gas is sent into the gas heating tank to be heated to 40 ℃, the heated gas enters a hot air distribution pipe at the bottom of a particulate matter collection container after being adjusted in pressure, the heated gas is diffused to the bottom of the particulate matter collection container through a plurality of hot air distribution outlets on the hot air distribution pipe, the volatilized solvent gas slowly passes through particle gaps after a soluble initiator is granulated, the heated gas enters a second condenser under the suction action of an induced draft fan to condense the solvent into liquid, the air and is separated out through a steam-liquid separator, the air is separated, the steam-inlet pressure of the controlled to be between 0.05MPa and 0.08MPa, the pipe diameter of the steam-water separator, the steam inlet pipe enters the bottom of the steam-water separator, and the steam-liquid separator for 6 hours, and the drying time is DN.
2. The drying method using a drying apparatus after granulation of a water-soluble initiator according to claim 1, wherein the particulate matter collecting container is made of a stainless material.
3. The drying method using a drying apparatus after granulation of a water-soluble initiator according to claim 1, wherein the screen is a stainless steel screen.
4. The drying method based on the drying device after the granulation of the water-soluble initiator as set forth in claim 1, wherein the particle collection container and a pipeline connected with an air inlet and an air inlet of the particle collection container are connected with an electrostatic grounding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188062.5A CN106500467B (en) | 2016-12-20 | 2016-12-20 | Drying device for granulated water-soluble initiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188062.5A CN106500467B (en) | 2016-12-20 | 2016-12-20 | Drying device for granulated water-soluble initiator |
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| Publication Number | Publication Date |
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| CN106500467A CN106500467A (en) | 2017-03-15 |
| CN106500467B true CN106500467B (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611188062.5A Active CN106500467B (en) | 2016-12-20 | 2016-12-20 | Drying device for granulated water-soluble initiator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489504A (en) * | 1981-02-10 | 1984-12-25 | Aeromatic Ag | Steam granulation apparatus and method |
| CN101949638A (en) * | 2010-09-26 | 2011-01-19 | 常州力马干燥工程有限公司 | Double-cone rotary vacuum drying and solvent recovering system |
| CN104748510A (en) * | 2014-07-21 | 2015-07-01 | 施荣芳 | Fluid bed drying device |
| CN105135835A (en) * | 2015-09-18 | 2015-12-09 | 泰州市天平化工有限公司 | Waste heat utilization drying device |
| CN205550815U (en) * | 2016-03-11 | 2016-09-07 | 河南晋开化工投资控股集团有限责任公司 | Compound fertilizer screening system with cooling and drying function |
-
2016
- 2016-12-20 CN CN201611188062.5A patent/CN106500467B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489504A (en) * | 1981-02-10 | 1984-12-25 | Aeromatic Ag | Steam granulation apparatus and method |
| CN101949638A (en) * | 2010-09-26 | 2011-01-19 | 常州力马干燥工程有限公司 | Double-cone rotary vacuum drying and solvent recovering system |
| CN104748510A (en) * | 2014-07-21 | 2015-07-01 | 施荣芳 | Fluid bed drying device |
| CN105135835A (en) * | 2015-09-18 | 2015-12-09 | 泰州市天平化工有限公司 | Waste heat utilization drying device |
| CN205550815U (en) * | 2016-03-11 | 2016-09-07 | 河南晋开化工投资控股集团有限责任公司 | Compound fertilizer screening system with cooling and drying function |
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| CN106500467A (en) | 2017-03-15 |
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