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A kind of white carbon black and its preparation method and application

A technology of white carbon black and reactor, applied in the direction of silicon oxide, silicon dioxide, etc.

Active Publication Date: 2020-07-31
EVE RUBBER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies and shortcomings of the prior art, the primary purpose of the present invention is to provide a method for preparing white carbon black, which is simple, easy to implement, environmentally friendly, and low in cost, and can efficiently synthesize precipitated white carbon with controllable specific surface area Black product, which can solve the related problems existing in the production and carbonization precipitation process of the existing rubber reinforcing filler industry

Method used

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  • A kind of white carbon black and its preparation method and application
  • A kind of white carbon black and its preparation method and application
  • A kind of white carbon black and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0162] Such as figure 1 As shown, a generating device for preparing white carbon black includes a reactor 2 and a circulation pump 27, the reactor 2 and the circulation pump 27 are connected by pipelines, and a first circulation pipeline 24 is provided at the bottom of the reactor 2 Connect the inlet of circulation pump 27, the outlet of circulation pump 27 connects the top of reaction kettle 2 by second circulation line 25, in the second circulation line 25, be provided with nozzle 26 near the pipe section of reaction kettle 2, near this nozzle 26 the first The pipe section of the second circulation line 25 is also connected with a vent 11, and the vent 11 communicates with the second circulation line 25, and the vent 11 is connected with the acidifying agent storage device 1 through a pipeline; a stirring device is arranged in the reactor 2;

[0163] The nozzle 26 is preferably set as a cone, the nozzle 26 is arranged as an inverted cone, and the tip of the cone of the nozz...

Embodiment 2

[0179] The difference from Example 1 is that the outlet of the nozzle 26 is located at the top of the reactor 2, and the liquid level of the reactor 2 is up to 2 / 3 of the total volume of the reactor 2, and both the nozzle 26 and the vent 11 are It is required to be located above the liquid level in the reactor 2, therefore, if image 3 As shown, the outlet of the nozzle 26 is located in the top 1 / 3 of the reactor 2; the straight section of the second circulation line 25 extends to the outlet at the bottom of the inner chamber of the reactor 2. The outlet of the second circulation line 25 extends to the bottom of the reactor 2 . Such a structure can ensure that the liquid from the second circulation line 25 flows into the bottom of the reactor 2, and under the action of the stirring device, the liquid containing CO 2 The boiler tail gas fully contacts and reacts with the liquid phase material, and the gas and liquid phase reactants have a larger contact area and a longer resid...

Embodiment 3

[0181] (1) Stir and mix 8,837g of sodium silicate solution and 23,596g of water to obtain a concentration of 0.4mol / L (as Na 2 O meter) sodium silicate solution (modulus M=3.33);

[0182] (2) Place the sodium silicate solution prepared in step (1) in the reaction kettle (Example 1), and heat up to 80°C under stirring; start the pneumatic diaphragm pump, and the sodium silicate solution in the reaction kettle is The suction in the kettle is sprayed below the liquid level of the reaction kettle through the nozzle in the circulation pipeline at a pressure of 0.6MPa to establish the circulation of the sodium silicate solution, wherein the size of the nozzle is 10mm; at the same time, the gas flow is introduced into the reaction kettle through the vent hole It is 18L / min, in which, the air vent is flush with the nozzle nozzle, and the pressure injection makes the carbon black tail gas react with the sodium silicate atomized near the nozzle quickly, and at the same time, the carbon ...

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Abstract

The invention belongs to the field of white carbon black preparation, and particularly relates to white carbon black and a preparation method and application thereof. The preparation method is capableof using a tail gas of carbon black production and the like as an acidifying agent, performing a precipitation reaction by using a stirring-auxiliary circulating-jet carbonization technology, and combining the advantages of three types of technologies of stirring, spraying and bubbling. The cost is cheap, the precipitation reaction efficiency is remarkably accelerated, and a precipitation white carbon black product of which the specific surface area is controllable can be efficiently synthesized. The preparation method is a recycling production system which is cheap in cost and green in design and manufacture, and has great industrial application value and potential social and economic benefits in the preparation industry of a tire rubber reinforcing agent.

Description

technical field [0001] The invention belongs to the field of white carbon black preparation, and in particular relates to white carbon black and its preparation method and application. Background technique [0002] Precipitated silica has a similar microstructure and reinforcing properties to carbon black materials. As early as the last century, researchers have begun to try to use silica to replace carbon black materials as a reinforcing agent for tire rubber. In recent years, with the promulgation and implementation of tire labeling laws in various countries and the introduction of my country's green tire technical specifications, green tires have become an inevitable trend in the development of the tire industry. Silica has become the most important reinforcing filler in the rubber formula of green tires. Can give tires low rolling resistance (less fuel consumption, can reduce car CO 2 emission) and high anti-wet skid ability (shorter braking distance of automobiles), so ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/12C08L7/00C08L91/06C08K13/02C08K3/36
CPCC01B33/12C01P2006/12C01P2006/19C08L7/00C08L91/06C08K13/02C08K3/36
Inventor 宋禹奠刘闯主和富金贾维杰
Owner EVE RUBBER RES INST
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