CN212425460U - Production device for continuous hydrophobic white carbon black - Google Patents
Production device for continuous hydrophobic white carbon black Download PDFInfo
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- CN212425460U CN212425460U CN202022434305.7U CN202022434305U CN212425460U CN 212425460 U CN212425460 U CN 212425460U CN 202022434305 U CN202022434305 U CN 202022434305U CN 212425460 U CN212425460 U CN 212425460U
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Abstract
The utility model discloses a continuous process hydrophobic white carbon's apparatus for producing, including the deoxygenator, the rotary kiln reactor, fluidized bed reactor, the modifier evaporimeter, the modifier pre-heater, the deoxygenator sets up white carbon entry and nitrogen gas entry, the upper end discharge gate of deoxygenator is connected through the one end rotation of an installation casing with the rotary kiln reactor, the other end of rotary kiln reactor rotates with one side feed inlet of fluidized bed reactor to be connected, the deoxygenator, the equal cladding of surface of rotary kiln reactor and fluidized bed reactor has electric heater, the discharge end of modifier evaporimeter passes through the modifier pre-heater and is connected with fluidized bed reactor. The utility model discloses a device has the deoxidation of white carbon black and preheats, white carbon black conventional treatment, white carbon black advanced treatment, modifier evaporation and preheat, several functional sections of modifier tail gas recycling, and equipment carries out continuous production, improves hydrophobic white carbon black productivity to the product homogeneity is high, easy operation, and makes the conversion rate of modifier improve, reduces and consumes.
Description
Technical Field
The utility model relates to a hydrophobic white carbon's apparatus for producing especially relates to a continuous process hydrophobic white carbon's apparatus for producing.
Background
At present, the main production method of the hydrophobic white carbon black in the technical field is intermittent production of a stirring reaction kettle, and a few of the production methods adopt a multi-stage fluidized bed type continuous reaction device. Wherein, the intermittent hydrophobic white carbon black production device has small capacity and poor product uniformity. The multistage fluidized bed type reaction device has a plurality of matched devices, the material conveying and bed height control among the fluidized beds are complex, and inert gas is required as power. The fluidized bed type reaction device needs to maintain a certain fluidized state of the white carbon black to maintain a good gas-solid phase contact, and needs a large steam flow of the modifier, so that the single-pass conversion rate of the modifier is low, and the raw material consumption is large. When the fluidized bed type reaction device meets the condition of switching different types of hydrophobic white carbon black, more switching time is needed and more intermediate materials are generated due to the difficulty in cleaning materials in the bed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a continuous process hydrophobic white carbon black's apparatus for producing.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
the utility model comprises a deoxidizer, a rotary kiln reactor, a fluidized bed reactor, a modifier evaporator and a modifier preheater, wherein one side of the lower end of the deoxidizer is provided with a white carbon black inlet and a nitrogen inlet which are communicated with each other inside and outside, a discharge port at the upper end of the deoxidizer is rotationally connected with one end of the rotary kiln reactor through an installation shell, the installation shell is provided with a tail gas discharge port, the other end of the rotary kiln reactor is rotationally connected with one side feed port of the fluidized bed reactor, the deoxidizer, the rotary kiln reactor and the outer surface of the fluidized bed reactor are both coated with an electric heater, the feed end of the modifier evaporator is the modifier inlet, the discharge end of the modifier evaporator is connected with the feed end of the modifier preheater, the discharge end of the modifier preheater is communicated and connected with the lower end of the fluidized bed reactor, one side of the middle section of the fluidized bed reactor is provided with a hydrophobic white carbon black outlet, the excircle of one end of the rotary kiln reactor is provided with a gear ring, and the gear ring is connected with a driving device.
As an improvement, the upper end of the deoxygenator is provided with a deoxygenation dust remover, and the upper end of the deoxygenation dust remover is provided with a deoxygenator tail gas outlet.
Further, the discharge hole of the deoxygenator is communicated and connected with the mounting shell through a deoxygenator unloader.
As an improvement, the tail gas discharge port is connected with a tail gas dust remover, and a discharge port at the lower end of the tail gas dust remover is connected with a feed port of the mounting shell through a tail gas dust remover unloader.
As an improvement, an exhaust port at the upper end of the tail gas dust remover is connected with a tail gas circulating fan, the exhaust end of the tail gas circulating fan is connected to the lower end of the fluidized bed reactor, and a reaction tail gas outlet is formed in a pipeline connected between the tail gas circulating fan and the fluidized bed reactor.
Preferably, a gas distributor is arranged at the lower end in the fluidized bed reactor. And a level meter connector is arranged at the upper end of the fluidized bed reactor.
Preferably, the inner wall of the rotary kiln reactor is provided with material turning plates which are uniformly distributed.
Further, the installation shell with rotate through kiln reactor sealing member between the kiln reactor and be connected, the kiln reactor with rotate through kiln reactor sealing member between the fluidized bed reactor and be connected, be provided with the rolling circle on the both ends excircle of kiln reactor, the rolling circle is located the support to can rotate relatively.
Furthermore, a sealing nitrogen inlet is arranged on the sealing element of the rotary kiln reactor.
The utility model has the advantages that:
the utility model relates to a continuous process hydrophobic white carbon's apparatus for producing compares with prior art, the utility model discloses a device has the deoxidation of white carbon and preheats, white carbon conventional treatment, white carbon deep treatment, modifier evaporation and preheats, several functional sections of modifier tail gas circulation retrieval and utilization, and equipment carries out continuous production, improves hydrophobic white carbon productivity to the product homogeneity is high, and easy operation, and makes the conversion rate of modifier improve, reduces and consumes, has the value of popularization and application.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, illustrative embodiments and description of which are provided herein to explain the invention, but not as a limitation thereof.
As shown in fig. 1: the utility model comprises a deoxidizer 1, a rotary kiln reactor 3, a fluidized bed reactor 8, a modifier evaporator 10 and a modifier preheater 15, wherein one side of the lower end of the deoxidizer 1 is provided with an inner and outer communicated white carbon black inlet 18 and a nitrogen inlet 19, the upper end discharge port of the deoxidizer 1 is rotatably connected with one end of the rotary kiln reactor 3 through an installation shell, the installation shell is provided with a tail gas discharge port, the other end of the rotary kiln reactor 3 is rotatably connected with one side feed inlet of the fluidized bed reactor 8, the deoxidizer 1, the rotary kiln reactor 3 and the outer surface of the fluidized bed reactor 8 are both coated with an electric heater 6, the feed end of the modifier evaporator 10 is a modifier inlet 22, the discharge end of the modifier evaporator 10 is connected with the feed end of the modifier preheater 15, the discharge end of the modifier preheater 15 is communicated and connected with the lower end of the fluidized bed reactor 8, one side of the middle section of the fluidized bed reactor 8 is provided with a hydrophobic white carbon black outlet 23, the excircle of one end of the rotary kiln reactor 3 is provided with a gear ring 16, and the gear ring 16 is connected with a driving device.
As an improvement, the upper end of the deoxygenator 1 is provided with a deoxygenation dust collector 2, and the upper end of the deoxygenation dust collector 2 is provided with a deoxygenator tail gas outlet 20. And recovering white carbon black from the modifier reaction tail gas by using a bag-type deoxidizing dust collector 2, recovering the modifier by using a fan or a compressor, and returning the modifier to the fluidized bed and the rotary kiln after the modifier is pressurized.
Further, a discharge port of the deoxygenator 1 is communicated and connected with the installation shell through a deoxygenator unloading machine 11.
As an improvement, the tail gas discharge port is connected with a tail gas dust remover 13, and a discharge port at the lower end of the tail gas dust remover 13 is connected with a feed port of the mounting shell through a tail gas dust remover unloader 12.
As an improvement, an exhaust port at the upper end of the tail gas dust remover 13 is connected with a tail gas circulating fan 14, an exhaust end of the tail gas circulating fan 14 is connected to the lower end of the fluidized bed reactor 8, and a reaction tail gas outlet 24 is arranged on a pipeline connected between the tail gas circulating fan 14 and the fluidized bed reactor 8.
Preferably, a gas distributor 9 is provided at the lower end in the fluidized bed reactor 8. The upper end of the fluidized bed reactor 8 is provided with a level meter interface 17. The gas distributor 9 is an arc-shaped or conical distributor, gas inlets are formed in the upper portion and the lower portion of the distributor, and the gas inlets on the upper side of the distributor are divided into 2-24 groups to enter the fluidized bed along the tangential direction of the same plane.
Preferably, the inner wall of the rotary kiln reactor 3 is provided with material turning plates 4 which are uniformly distributed.
Further, the installation shell with rotate through kiln reactor sealing member 5 between the kiln reactor 3 and be connected, kiln reactor 3 with rotate through kiln reactor sealing member 5 between the fluidized bed reactor 8 and be connected, be provided with rolling ring 7 on the both ends excircle of kiln reactor 3, rolling ring 7 is located the support to can rotate relatively.
Further, a sealing nitrogen inlet 21 is arranged on the sealing member 5 of the rotary kiln reactor.
The working principle of the utility model is as follows:
white carbon black raw material powder enters the deoxygenator 1 through the white carbon black inlet 18, nitrogen is continuously introduced into a nitrogen inlet 19 of the deoxygenator, and oxygen in gaps of the white carbon black is replaced by the nitrogen through the introduction of the nitrogen, so that the process is of great importance to the reaction safety after the subsequent modifier is introduced. The surface of the barrel of the deoxygenator is provided with the electric heating belt, the electric heating belt can accelerate the removal of oxygen in the white carbon black gap and preheat the white carbon black to the modification reaction temperature, the white carbon black can directly react after entering the reaction device, and the heating and other work is not needed. The top of the deoxygenator is provided with a deoxygenation dust collector 2, the dust collector adopts a bag filter structure and uses a high-temperature film-coated filter bag, compressed nitrogen is blowback gas, and the dust collector can prevent the loss of white carbon black and reduce the dust amount in tail gas.
The white carbon black in the deoxygenator is conveyed into the rotary kiln reactor 3 through the deoxygenator unloading machine 11, and the deoxygenator unloading machine can convey the white carbon black and simultaneously can also avoid the potential safety hazard of mutual gas communication between the deoxygenator and the rotary kiln reactor. The white carbon black is kept at a certain material level in the rotary kiln reactor after entering the reactor at a certain temperature, and the material level can be monitored by a material level meter arranged on a material level meter interface 17 at the top of the fluidized bed reactor 8. The design of the inner wall at the rotary kiln reactor has a material turning plate 4, the material turning plate can continuously lift the white carbon black at the lower part of the rotary kiln along with the rotation of the rotary kiln and contact with the modifier steam in the rotary kiln, the design of the outer wall at the rotary kiln has an electric heater 6, the working temperature of the electric heater can be adjusted according to different modifiers and different hydrophobic degrees required by the white carbon black, rolling rings 7 are designed at the two ends of the rotary kiln reactor, the rolling rings at the two ends are arranged on two groups of rollers, a gear ring 16 is designed at the feeding section of the rotary kiln, the gear ring is connected with a gearbox driven by a variable frequency motor, and the gear ring of the rotary kiln is driven by a gearbox gear to enable the rotary kiln. The two ends of the rotary kiln are provided with rotary kiln reactor sealing parts 5, the sealing is of a labyrinth type and filler type composite structure, the number of labyrinth seals is 5, the filler seal is a graphite packing, a sealing nitrogen inlet 21 is arranged between the labyrinth seals and the filler seals, and the labyrinth seal pressure is established by filling nitrogen with a certain flow rate so as to prevent the leakage of the modifier. The flow direction of the white carbon black in the rotary kiln reactor is in counter-flow with the modifier steam from the fluidized bed reactor, so that the conversion per pass of the modifier is highest.
The tail of the rotary kiln reactor is connected with a fluidized bed reactor 8, the white carbon black continuously enters the fluidized bed reactor from the rotary kiln reactor under the dual actions of the conveying action of the rotary kiln and the height difference of the material level, and the bottom of the fluidized bed reactor is provided with a gas distributor. The modifier enters a modifier evaporator 10, is continuously vaporized into steam in the continuous heating process and enters a modifier preheater 15 to be preheated to a certain temperature, the preheated modifier and part of the modifier which cannot be completely reacted enter a fluidized bed reactor from the lower part of a gas distributor, the steam moves upwards in the fluidized bed reactor at a certain flow velocity after passing through the distributor, the gas flow can enable the white carbon black to suspend above the gas distributor and move up and down, and the modifier reacts with hydroxyl on the surface of the white carbon black in the contact process of the steam and the white carbon black and is grafted to the surface of the reactor to hydrophobize the white carbon black. The surface of the fluidized bed reactor is designed with electric heating to maintain a certain reaction temperature, so that the modification reaction is fully carried out.
Modifier steam and a trace amount of nitrogen which are not completely reacted at the kiln head of the rotary kiln reactor enter a tail gas dust remover 13, the dust remover is of a bag filter structure, compressed nitrogen is used as blowback gas, a tail gas dust remover unloader 12 is connected to the lower end of the dust remover, and the recovered white carbon black is returned to the reactor. The gas outlet of the tail gas dust remover 13 is connected with a tail gas circulating fan 14, and the tail gas circulating fan can provide certain driving force to continuously convey the tail gas of the kiln head to the fluidized bed reactor and the tail gas treatment device. Partial redundant tail gas of tail gas circulating fan is sent into tail gas processing apparatus through reaction tail gas export 24 and is handled, and partly in addition gets into gas distributor with fresh modifier steam, and last partly follow gas distributor's up end and get into fluidized bed reactor along tangential direction all around, and this tangential air current will form rotatory air current in fluidized bed reactor, prevents piling up and caking of white carbon black and influences the effect of modifying.
Example (b):
the utility model discloses use the hydrophobic modification device of white carbon black of fluidized bed + rotary kiln + fluidized bed, the device is applicable to intermittent type and two kinds of operation mode in succession. The utility model is suitable for a hexamethyldisilazane, dimethyldichlorosilane, methyl trichlorosilane, trimethyl chlorosilane, hydroxyl silicone oil of various molecular weights, D4 (octamethylcyclotetrasiloxane), D3, D5, D6, methyltrimethoxysilane, vinyl trimethoxysilane, chloropropyltrimethoxysilane and other all evaporable silazanes, chlorosilanes, siloxanes, alkoxysilanes modify the white carbon black.
The device of the utility model is divided into: deoxidizing and preheating white carbon black, conventionally treating the white carbon black, deeply treating the white carbon black, evaporating and preheating a modifier, and recycling the tail gas of the modifier.
The utility model discloses be suitable for 500 tons hydrophobic type white carbon black devices of annual output, deoxygenator diameter 1000mm, deoxygenator height 3000mm, rotary kiln reactor diameter 600mm, rotary kiln length 8 meters, rotary kiln turn-over board height 100mm, turn-over board is 5 with the rotary kiln center, rotary kiln rotational speed 3r/min, fluidized bed reactor diameter 1200mm, height 3500mm, modifier evaporimeter and pre-heater all have the heat transfer area of 4 square meters for the shell and tube structure, deoxidation dust remover and tail gas dust remover filter area all are 50 square meters, tail gas circulating fan flow 2500Nm3/h。
In the embodiment, the white carbon black raw material is Futai brand A200K hydrophilic fumed silica, the modifier is hydroxy silicone oil with a hydroxyl value of 2.5%, the feeding flow rate of the fumed silica is 100kg/h, and the steam flow rate of the hydroxy silicone oil as the modifier is 20-30 kg/h.
The utility model discloses deoxygenator operating temperature is 150 ~ 200 ℃, and rotary kiln reactor operating temperature is 250 ~ 300 ℃, and fluidized bed reactor operating temperature is 200 ~ 300, and modifier preheating temperature is 250 ℃.
The utility model discloses fluidized bed reactor control reaction charge level is 400 + -50 mm from the top of the bed, through ejection of compact speed control charge level height.
The utility model discloses fluidized bed reactor operating pressure 5 ~ 15kpa, the main volume of releasing through control g reaction tail gas export controls reaction pressure, can also suitably adjust modifier steam flow control reaction pressure.
The prepared hydrophobic fumed silica is extremely suitable for thickening and thixotropic resin of epoxy systems, vinyl systems and other systems.
The prepared hydrophobic fumed silica is used in the ceramic tile crack sealing glue of epoxy resin, and can provide a shelf life of 18 months for products.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (10)
1. The utility model provides a continuous process hydrophobic white carbon black's apparatus for producing which characterized in that: the device comprises a deoxygenator (1), a rotary kiln reactor (3), a fluidized bed reactor (8), a modifier evaporator (10) and a modifier preheater (15), wherein a white carbon black inlet (18) and a nitrogen inlet (19) which are communicated with each other inside and outside are arranged on one side of the lower end of the deoxygenator (1), a discharge port at the upper end of the deoxygenator (1) is rotatably connected with one end of the rotary kiln reactor (3) through an installation shell, a tail gas discharge port is arranged on the installation shell, the other end of the rotary kiln reactor (3) is rotatably connected with a feed port at one side of the fluidized bed reactor (8), electric heaters (6) are respectively coated on the outer surfaces of the deoxygenator (1), the rotary kiln reactor (3) and the fluidized bed reactor (8), the feed end of the modifier evaporator (10) is a modifier inlet (22), and the discharge end of the modifier evaporator (10) is connected with the feed end of the modifier preheater (15), the discharge end of modifier pre-heater (15) with fluidized bed reactor (8) lower extreme communicates with each other and connects, middle section one side of fluidized bed reactor (8) is provided with hydrophobic white carbon black export (23), be provided with ring gear (16) on the excircle of the one end of rotary kiln reactor (3), ring gear (16) are connected with drive arrangement.
2. The continuous hydrophobic white carbon black production device according to claim 1, which is characterized in that: the upper end of the deoxygenator (1) is provided with a deoxygenation dust collector (2), and the upper end of the deoxygenation dust collector (2) is provided with a deoxygenator tail gas outlet (20).
3. The production device of the hydrophobic white carbon black by the continuous method according to claim 1 or 2, which is characterized in that: the discharge hole of the deoxygenator (1) is communicated and connected with the mounting shell through a deoxygenator unloader (11).
4. The continuous hydrophobic white carbon black production device according to claim 1, which is characterized in that: the tail gas discharge port is connected with a tail gas dust remover (13), and a discharge port at the lower end of the tail gas dust remover (13) is connected with a feed port of the mounting shell through a tail gas dust remover unloader (12).
5. The continuous hydrophobic white carbon black production device according to claim 4, which is characterized in that: the upper end gas vent of tail gas dust remover (13) is connected with tail gas circulating fan (14), the exhaust end of tail gas circulating fan (14) inserts the lower extreme of fluidized bed reactor (8), tail gas circulating fan (14) with be provided with reaction tail gas export (24) on the pipeline of being connected between fluidized bed reactor (8).
6. The production device of the hydrophobic white carbon black by the continuous method according to claim 1 or 5, which is characterized in that: and a gas distributor (9) is arranged at the lower end in the fluidized bed reactor (8).
7. The production device of the hydrophobic white carbon black by the continuous method according to claim 1 or 5, which is characterized in that: and a level meter connector (17) is arranged at the upper end of the fluidized bed reactor (8).
8. The continuous hydrophobic white carbon black production device according to claim 1, which is characterized in that: the inner wall of the rotary kiln reactor (3) is provided with material turning plates (4) which are uniformly distributed.
9. The continuous hydrophobic white carbon black production device according to claim 1, which is characterized in that: the installation casing with rotate through kiln reactor sealing member (5) between the kiln reactor (3) and connect, kiln reactor (3) with rotate through kiln reactor sealing member (5) between fluidized bed reactor (8) and connect, be provided with on the both ends excircle of kiln reactor (3) and roll circle (7), roll circle (7) and be located the support to can rotate relatively.
10. The continuous hydrophobic white carbon black production device according to claim 9, which is characterized in that: and a sealing nitrogen inlet (21) is arranged on the sealing piece (5) of the rotary kiln reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022434305.7U CN212425460U (en) | 2020-10-28 | 2020-10-28 | Production device for continuous hydrophobic white carbon black |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022434305.7U CN212425460U (en) | 2020-10-28 | 2020-10-28 | Production device for continuous hydrophobic white carbon black |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142059A (en) * | 2020-10-28 | 2020-12-29 | 宁夏福泰硅业有限公司 | Production device for continuous hydrophobic white carbon black |
| CN114797690A (en) * | 2022-05-24 | 2022-07-29 | 清远市鑫辉化工有限公司 | Novel white carbon black modification equipment |
-
2020
- 2020-10-28 CN CN202022434305.7U patent/CN212425460U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142059A (en) * | 2020-10-28 | 2020-12-29 | 宁夏福泰硅业有限公司 | Production device for continuous hydrophobic white carbon black |
| CN114797690A (en) * | 2022-05-24 | 2022-07-29 | 清远市鑫辉化工有限公司 | Novel white carbon black modification equipment |
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