阅读说明：本技术 一种白炭黑的生产装置及制备方法 (White carbon black production device and preparation method ) 是由 汪亚雄 李智民 彭华龙 王莹莹 于 2020-05-07 设计创作，主要内容包括：本发明提出一种白炭黑的生产装置及制备方法,包括：动力装置、反应釜、空心轴、分散叶片、分散膜；动力装置设置在反应釜外部,空心轴、分散叶片以及分散膜均设置在反应釜内部；动力装置的驱动轴连接空心轴,以驱动空心轴旋转；分散叶片的内部中空,空心轴连接分散叶片；分散叶片设置有与内部中空部分连通的出气孔,分散叶片的表面连接分散膜,分散膜紧贴分散叶片的一侧与出气孔连通；空心轴上设置有轴输气口,以通过输气口依次向空心轴、分散叶片、分散膜输气。将生产白炭黑所需要的二氧化碳气体通过分散膜分散后进入到反应液体中,不需要特种的高压泵来输送,利用分散叶片的转动,可使得经分散后的二氧化碳均匀分散于反应液中,利于生产白炭黑。(The invention provides a production device and a preparation method of white carbon black, which comprises the following steps: the device comprises a power device, a reaction kettle, a hollow shaft, dispersing blades and a dispersing membrane; the power device is arranged outside the reaction kettle, and the hollow shaft, the dispersing blades and the dispersing membrane are all arranged inside the reaction kettle; a driving shaft of the power device is connected with the hollow shaft so as to drive the hollow shaft to rotate; the dispersing blades are hollow inside, and the hollow shaft is connected with the dispersing blades; the dispersing blades are provided with air outlet holes communicated with the hollow part inside, the surfaces of the dispersing blades are connected with dispersing membranes, and one sides of the dispersing membranes, which are tightly attached to the dispersing blades, are communicated with the air outlet holes; the hollow shaft is provided with a shaft gas transmission port so as to transmit gas to the hollow shaft, the dispersing blades and the dispersing membrane in sequence through the gas transmission port. Carbon dioxide gas required by producing the white carbon black is dispersed by the dispersion film and then enters the reaction liquid, a special high-pressure pump is not required for conveying, and the dispersed carbon dioxide can be uniformly dispersed in the reaction liquid by utilizing the rotation of the dispersion blade, so that the production of the white carbon black is facilitated.)

1. The utility model provides a white carbon black's apparatus for producing, its characterized in that includes: the device comprises a power device, a reaction kettle, a hollow shaft, dispersing blades and a dispersing membrane;

the power device is arranged outside the reaction kettle, and the hollow shaft, the dispersing blades and the dispersing membrane are all arranged inside the reaction kettle;

the driving shaft of the power device is connected with the hollow shaft so as to drive the hollow shaft to rotate;

the dispersing blades are hollow, the hollow shaft is connected with the dispersing blades, and the hollow part of the hollow shaft is communicated with the hollow parts of the dispersing blades;

the dispersing blades are provided with air outlet holes communicated with the hollow part inside, the surfaces of the dispersing blades are connected with the dispersing membrane, and one side of the dispersing membrane close to the dispersing blades is communicated with the air outlet holes;

the hollow shaft is provided with a shaft gas transmission port, so that gas is transmitted to the hollow shaft, the dispersing blades and the dispersing membrane in sequence through the gas transmission port.

2. The apparatus of claim 1, further comprising: a dispersion plate; a plate input port is formed in the dispersion plate;

the dispersion plate is hollow, and the first surface of the dispersion plate is also provided with an air outlet communicated with the hollow part;

the first surface of the dispersion plate is provided with the dispersion film; the other side of the dispersion plate is fixed on the inner wall of the reaction kettle.

3. The device of claim 1 or 2, wherein the dispersion film is a multi-layer metal sintered mesh.

4. The device according to claim 1 or 2, wherein the dispersion membrane has a filtration precision of between 1 and 50 μm.

5. The apparatus of claim 1, wherein the dispersion membrane is attached to the liquid-facing surface of the dispersion blade.

6. The apparatus of claim 1, further comprising: a sealing box; the sealing box is sleeved on the shaft gas transmission port to ensure the sealing performance when gas is transmitted to the hollow shaft.

7. The apparatus of claim 1, further comprising: a heater; the heater is arranged on the reaction kettle and used for heating the reaction kettle.

8. The apparatus of claim 7, wherein the heater comprises: heating wires, or steam coils, or jacketed steam heaters.

9. A method for preparing white carbon black based on the white carbon black production apparatus of any one of claims 1 to 8, wherein the method comprises:

injecting the water glass diluent into the reaction kettle, and starting a power device to stir and heat;

inputting carbon dioxide into the water glass diluent, controlling the reaction temperature range to be 50-90 ℃, and stopping ventilation after the ventilation time is 5-45 min;

continuously introducing carbon dioxide gas into the reaction solution, controlling the reaction temperature to be 70-95 ℃, and stopping introducing the gas after the introducing time is 10-45 min;

keeping the reaction temperature within the range of 70-95 ℃, starting the power device to stir for 10-150min, and stopping the reaction when the pH value of the reaction solution is controlled to be 5.5-10.0;

and filtering and washing the reaction slurry to obtain a crude product, and pulping and spray-drying the crude product to obtain a nano-silicon dioxide product.

10. The method for preparing white carbon black according to claim 9, wherein the water glass diluent is prepared from a sodium silicate solution with a modulus of 3-4 and a commercial baume degree of 38 grades.

Technical Field

The invention relates to the technical field of white carbon black production, and particularly relates to a production device and a preparation method of white carbon black.

Background

White carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fumed silica and ultrafine silica gel, and also including powdery synthetic aluminum silicate, calcium silicate, and the like. The white carbon black is a porous substance, the composition of the white carbon black can be represented by SiO2 & nH2O, wherein nH2O exists in the form of surface hydroxyl, the white carbon black can be dissolved in caustic alkali and hydrofluoric acid, is not dissolved in water, solvent and acid (except the hydrofluoric acid), and has high temperature resistance, non-combustibility, no odor and good electrical insulation.

However, the production process of the white carbon black at present involves carbon dioxide, and the carbon dioxide needs to be uniformly mixed in the reaction solution, but the existing dispersion method mainly depends on a stirring mode, and cannot achieve a good uniform mixing effect.

Therefore, a better white carbon black production scheme is needed at present.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a production device and a preparation method of white carbon black, carbon dioxide gas required for producing the white carbon black is dispersed by a dispersion film and then enters into reaction liquid, a special high-pressure pump is not required for conveying, and the dispersed carbon dioxide can be uniformly dispersed in the reaction liquid by utilizing the rotation of a dispersion blade, so that the production of the white carbon black is facilitated.

Specifically, the present invention proposes the following specific examples:

the embodiment of the invention provides a white carbon black production device, which comprises: the device comprises a power device, a reaction kettle, a hollow shaft, dispersing blades and a dispersing membrane;

the power device is arranged outside the reaction kettle, and the hollow shaft, the dispersing blades and the dispersing membrane are all arranged inside the reaction kettle;

the driving shaft of the power device is connected with the hollow shaft so as to drive the hollow shaft to rotate;

the dispersing blades are hollow, the hollow shaft is connected with the dispersing blades, and the hollow part of the hollow shaft is communicated with the hollow parts of the dispersing blades;

the dispersing blades are provided with air outlet holes communicated with the hollow part inside, the surfaces of the dispersing blades are connected with the dispersing membrane, and one side of the dispersing membrane close to the dispersing blades is communicated with the air outlet holes;

the hollow shaft is provided with a shaft gas transmission port, so that gas is transmitted to the hollow shaft, the dispersing blades and the dispersing membrane in sequence through the gas transmission port.

In a specific embodiment, the method further comprises the following steps: a dispersion plate; a plate input port is formed in the dispersion plate;

the dispersion plate is hollow, and the first surface of the dispersion plate is also provided with an air outlet communicated with the hollow part;

the first surface of the dispersion plate is provided with the dispersion film; the other side of the dispersion plate is fixed on the inner wall of the reaction kettle.

In a specific embodiment, the dispersion film is a multilayer metal sintered mesh.

In a particular embodiment, the filtration precision of the dispersion membrane is between 1 and 50 μm.

In a specific embodiment, the dispersion membrane is connected to the liquid-facing surface of the dispersion blade.

In a specific embodiment, the method further comprises the following steps: a sealing box; the sealing box is sleeved on the shaft gas transmission port to ensure the sealing performance when gas is transmitted to the hollow shaft.

In a specific embodiment, the method further comprises the following steps: a heater; the heater is arranged on the reaction kettle and used for heating the reaction kettle.

In a particular embodiment, the heater comprises: heating wires, or steam coils, or jacketed steam heaters.

The embodiment of the invention also provides a method for preparing white carbon black based on the white carbon black production device, which is applied to the following steps:

injecting the water glass diluent into the reaction kettle, and starting a power device to stir and heat the stirring paddle;

inputting carbon dioxide into the water glass diluent, controlling the reaction temperature range to be 50-90 ℃, and stopping ventilation after the ventilation time is 5-45 min;

continuously introducing carbon dioxide gas into the reaction solution, controlling the reaction temperature to be 70-95 ℃, and stopping introducing the gas after the introducing time is 10-45 min;

keeping the reaction temperature within the range of 70-95 ℃, starting the power device to stir for 10-150min, and stopping the reaction when the pH value of the reaction solution is controlled to be 5.5-10.0;

and filtering and washing the reaction slurry to obtain a crude product, and pulping and spray-drying the crude product to obtain a nano-silicon dioxide product.

In a specific embodiment, the water glass diluent is prepared by using a commercial grade sodium silicate solution with a Baume degree of 38 and a modulus of 3-4.

Therefore, the embodiment of the invention provides a production device and a preparation method of white carbon black, wherein the device comprises the following components: the device comprises a power device, a reaction kettle, a hollow shaft, dispersing blades and a dispersing membrane; the power device is arranged outside the reaction kettle, and the hollow shaft, the dispersing blades and the dispersing membrane are all arranged inside the reaction kettle; the driving shaft of the power device is connected with the hollow shaft so as to drive the hollow shaft to rotate; the dispersing blades are hollow, the hollow shaft is connected with the dispersing blades, and the hollow part of the hollow shaft is communicated with the hollow parts of the dispersing blades; the dispersing blades are provided with air outlet holes communicated with the hollow part inside, the surfaces of the dispersing blades are connected with the dispersing membrane, and one side of the dispersing membrane close to the dispersing blades is communicated with the air outlet holes; the hollow shaft is provided with a shaft gas transmission port, so that gas is transmitted to the hollow shaft, the dispersing blades and the dispersing membrane in sequence through the gas transmission port. Carbon dioxide gas required by producing the white carbon black is dispersed by the dispersion film and then enters the reaction liquid, a special high-pressure pump is not required for conveying, and the dispersed carbon dioxide can be uniformly dispersed in the reaction liquid by utilizing the rotation of the dispersion blade, so that the production of the white carbon black is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a white carbon black production apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a hollow spindle of the apparatus for producing white carbon black according to the embodiment of the present invention;

FIG. 3 is a schematic top view of a hollow spindle of the apparatus for producing white carbon black according to the embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the portion A-A included in FIG. 2;

fig. 5 is a schematic structural diagram of a white carbon black production apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a dispersion plate in a white carbon black production apparatus according to an embodiment of the present invention;

fig. 7 is a schematic top view of a dispersion plate in a white carbon black production apparatus according to an embodiment of the present invention;

fig. 8 is a schematic flow chart of a method for preparing white carbon black according to an embodiment of the present invention.

Illustration of the drawings:

1-a power plant; 2-a reaction kettle; 3-a hollow shaft;

4-dispersing blades; 5-a dispersion film; 6-a dispersion plate; 7-sealing the box.

Detailed Description

Various embodiments of the present disclosure will be described more fully hereinafter. The present disclosure is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the disclosure to the specific embodiments disclosed herein, but rather, the disclosure is to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the disclosure.

The terminology used in the various embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the present disclosure. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present disclosure belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined in various embodiments of the present disclosure.