CN204111646U - A kind of aerosil surface processing device - Google Patents
A kind of aerosil surface processing device Download PDFInfo
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- CN204111646U CN204111646U CN201420388070.4U CN201420388070U CN204111646U CN 204111646 U CN204111646 U CN 204111646U CN 201420388070 U CN201420388070 U CN 201420388070U CN 204111646 U CN204111646 U CN 204111646U
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Abstract
The utility model discloses a kind of aerosil surface processing device to comprise: vaporizer is used for the silane surfactant of liquid state to vaporize; Mixing tank is connected with vaporizer, and mixing tank has carrier gas input port, and mixing tank is used for the silane surfactant of the vaporization of input to mix with carrier gas; Reactor is connected with mixing tank, there is heating unit for heating in reactor, the silane surfactant of the vaporization in carrier gas inputted and aerosil countercurrent flow are reacted, obtains the aerosil of the silane surfactant process through overflash; Finished product bin is connected with reactor, for receiving the aerosil of the silane surfactant process through overflash; Condenser is connected with reactor, and the silane surfactant condensation for the vaporization in the tail gas that will flow out from reactor is reclaimed.This aerosil surface processing device is recycled, reduces production cost after silane surfactant condensation being reclaimed by condenser.
Description
Technical field
The utility model belongs to technical field of polysilicon production, is specifically related to a kind of aerosil surface processing device.
Background technology
Aerosil has special surface tissue (with surface hydroxyl and planar water), (particle is little for special particle form, specific surface area is large) and unique physical and chemical performance, be widely used in rubber, plastics, coating, medicine, daily-use chemical industry numerous areas.
But, due to the easy planar water of activated silica alcohol radical that aerosil outside surface exists, make it be wetting ability, thus in organic phase, be difficult to moistening and dispersion; Because the surface of aerosil exists hydroxyl, surface energy is comparatively large, and its aggregate always tends to cohesion, and thus the application performance of product is affected.Such as: can not be compatible and disperse well with polymkeric substance in vulcanization of rubber system, in coating products, easily cause coagulative precipitation, in tire, a large amount of use needs to add silane coupling agent etc. simultaneously.For this reason, need to carry out surface modification treatment to aerosil, to improve its effect, improve value-added content of product, expand the Application Areas of product.Aerosil after surface modification treatment is a kind of new inorganic material with special construction, is widely used in all trades and professions of national economy.
The surface modification of aerosil utilizes surface treatment agent by certain processing method, the surface hydroxyl of aerosil and surface treatment agent to be reacted, and eliminates or reduce the amount of its surfactivity silanol base, to reach the object changing surface properties.
Only have the enterprise in a few countries such as the U.S., Germany, Japan, Ukraine, China and area can produce fumed silica and surface modified product thereof in the world at present, wherein Degussa, Cabot Deng Ji major company technology is comparatively advanced, and domestic only have only a few enterprise and research institutions to study aerosil surface treatment.Wherein, patent of invention CN100506921C describes a kind of method being prepared hydrophobic nano silicon-dioxide by continuous surface process, by hydrophilic aerosil continus convergence is reacted in surface modification stove to surface modification stove and silane surfactant, by adjustment reaction times, temperature of reaction and material proportion control surface modification degree, surface treated aerosil enters Analytic Tower again, unreacted for silica sphere surface treatment agent and by-product gas is removed by Analytic Tower.This patent mainly have studied aerosil surface-treated method, and the shortcoming of this method is: in tail gas, unreacted surface treatment agent fails efficient recovery, causes the waste of surface treatment agent, and vent gas treatment is comparatively difficult simultaneously.
Utility model content
Technical problem to be solved in the utility model is for above shortcomings in prior art, a kind of aerosil surface processing device is provided, after silane surfactant condensation being reclaimed by condenser, condensed silane surfactant can recycle, and reduces production cost.
The technical scheme that solution the utility model technical problem adopts is to provide a kind of aerosil surface processing device, comprising:
Vaporizer, for vaporizing the silane surfactant of liquid state;
Mixing tank, is connected with described vaporizer, and described mixing tank has carrier gas input port, and described mixing tank is used for the silane surfactant of the vaporization of input to mix with carrier gas;
Reactor, be connected with described mixing tank, there is heating unit for heating in described reactor, the silane surfactant of the vaporization in described carrier gas inputted and aerosil countercurrent flow are reacted, obtains the aerosil of the silane surfactant process through overflash;
Finished product bin, is connected with described reactor, and described finished product bin is for receiving the aerosil of the described silane surfactant process through overflash;
Condenser, is connected with described reactor, and described condenser is used for the silane surfactant condensation of the vaporization in the tail gas flowed out from described reactor to reclaim.
Preferably, described reactor is fluidized-bed reactor.
Preferably, the condensing temperature of described condenser is-20 ~-35 DEG C, and the pressure in described condenser is 0.1 ~ 0.5Mpa.
Preferably, described aerosil surface processing device, also comprise: bag filter, be connected with described reactor, described condenser respectively, described bag filter is used for the aerosil in the tail gas flowed out from described reactor to filter out, and the tail gas after filtration is transported to described condenser again.
Preferably, described aerosil surface processing device, also comprise: one-level chlorosilane eluting column, is connected with described condenser, described one-level chlorosilane eluting column is used for being sponged by the silane surfactant of chlorosilane leacheate by the vaporization be not condensed in described condenser.
Preferably, described aerosil surface processing device, also comprise: two-step washing tower, be connected with described one-level chlorosilane eluting column, described two-step washing tower is used for the hydrogen chloride absorption in the tail gas flowed out from described one-level chlorosilane eluting column being fallen by washing.
Preferably, described aerosil surface processing device, also comprise: the first handling machinery, be connected with described reactor, described finished product bin respectively, described first handling machinery is used for the aerosil of the silane surfactant process through overflash described in described reactor to be sent in described finished product bin.
Preferably, described aerosil surface processing device, also comprise: the second handling machinery, be connected with described bag filter, described finished product bin respectively, described second handling machinery is used for the aerosil of the silane surfactant process through overflash after described bag filter filters to be sent in described finished product bin.
Aerosil surface processing device in the present embodiment efficiently solves in aerosil surface treatment process, silane surfactant loss is large, cannot the problem of effective recycling, silane surfactant is expensive, after silane surfactant condensation being reclaimed by the condensation of condenser, condensed silane surfactant can recycle, thus reduces production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the aerosil surface processing device in the utility model embodiment.
In figure: 1-vaporizer; 2-mixing tank; 3-reactor; 4-finished product bin; 5-condenser; 6-bag filter; 7-one-level chlorosilane eluting column; 8-two-step washing tower; 9-first handling machinery; 10-second handling machinery; 11-carrier gas inlet; 12-aerosil entrance; 14-refrigerant inlet; 15-refrigerant exit; 16-silane surfactant storage tank; 17-chlorosilane entrance; 18-chlorosilane storage tank; 19-water inlet; 20-waste liquid relief outlet; 21-tail gas relief outlet.
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of aerosil surface processing device, comprising:
Vaporizer 1, for the silane surfactant of liquid state being vaporized, the silane surfactant of described liquid state can be the surface treatment agents such as halosilanes, silazane or type siloxane; Vaporizer 1 in the present embodiment is specially jacketed pipe heat exchanger, adopts external steam as thermal source in chuck.Vaporizer 1 comprises jacketed pipe heat exchanger tank body, and the silane surfactant after tank body having liquid silane surfactant enter the mouth of pipe, vaporization exports the mouth of pipe.
Mixing tank 2, is connected with described vaporizer 1 pipeline, and described mixing tank 2 is for mixing the silane surfactant being inputted the vaporization come by vaporizer 1 with carrier gas; Carrier gas in the present embodiment is specially rare gas element as argon gas or other rare gas elementes.Mixing tank 2 is provided with outside the entrance of the silane surfactant of vaporization, is also provided with carrier gas inlet 11, this carrier gas inlet 11 for passing into carrier gas in mixing tank 2.
Reactor 3, be connected with described mixing tank 2, there is heating unit for heating in described reactor 3, the silane surfactant of the vaporization described carrier gas of input bottom reactor 3 is reacted with the aerosil countercurrent flow inputted from reactor 3 top, obtains the aerosil of the silane surfactant process through overflash; Have electric heater unit in reactor 3 in the present embodiment, preferably reactor 3 also possesses temperature control system control temperature; Further preferably also there is sparger in reactor 3, this sparger can make the silane surfactant of the vaporization in described carrier gas inputted with aerosil countercurrent flow and fully contact, and transfers out from the middle part of reactor 3 through the aerosil of the silane surfactant process of overflash.Reactor 3 is provided with aerosil entrance 12, this aerosil entrance 12 for passing into aerosil in reactor 3.
Finished product bin 4, is connected with described reactor 3, and described finished product bin 4 is for receiving the aerosil of the described silane surfactant process through overflash;
Condenser 5, is connected with described reactor 3, and described condenser 5 is for the silane surfactant condensation of the vaporization in the tail gas that will flow out from described reactor 3.The tail gas flowed out from described reactor 3 mainly comprises: the complete silane surfactant of unreacted, carrier gas, reacted by-product gas and a small amount of aerosil powder.Silane surfactant is expensive, after silane surfactant condensation being reclaimed by the condensation of condenser 5, condensed silane surfactant can enter silane surfactant storage tank 16 internal recycle and use, thus reduces production cost.Condenser 5 is provided with refrigerant inlet 14 and refrigerant exit 15, carries out condensation recovery by refrigerant.
Preferably, described reactor 3 is fluidized-bed reactor.
Preferably, the condensing temperature of described condenser 5 is-20 ~-35 DEG C, and the pressure in described condenser 5 is 0.1 ~ 0.5Mpa.Condenser 5 in this enforcement specifically adopts the salt solution of-35 DEG C or freonll-11 as refrigerant.Under these conditions, silane surfactant condensation complete for the unreacted of 60 ~ 95% can be reclaimed, condensed silane surfactant enters silane surfactant storage tank 16 internal recycle and uses, and carrier gas and reacted by-product gas then cannot condensations with this understanding.
Preferably, described aerosil surface processing device, also comprise: bag filter 6, be connected with described reactor 3, described condenser 5 respectively, described bag filter 6 is for filtering out the aerosil in the tail gas flowed out from described reactor 3, and the tail gas after filtration is transported to described condenser 5 again.By the filter bag of this bag filter 6, tail gas is separated with the aerosil powder wherein carried.Wherein, bag filter 6 inside is containing automatic back blow device, and this automatic back blow device adopts rare gas element blowback filter bag, is blown off by the powder on filter bag surface in the broach hopper of bag filter 6.
Preferably, described aerosil surface processing device, also comprise: one-level chlorosilane eluting column 7, be connected with described condenser 5, described one-level chlorosilane eluting column 7 is for sponging by the silane surfactant of chlorosilane leacheate by the vaporization be not condensed in described condenser 5.One-level chlorosilane eluting column 7 is provided with chlorosilane entrance 17, after the silane surfactant of the vaporization be not condensed in described condenser 5 being sponged by chlorosilane leacheate, enters into chlorosilane storage tank 18.
Preferably, described aerosil surface processing device, also comprise: two-step washing tower 8, be connected with described one-level chlorosilane eluting column 7, described two-step washing tower 8 is for falling the hydrogen chloride absorption in the tail gas flowed out from described one-level chlorosilane eluting column 7 by washing.Now, all obnoxious flavoures in the tail gas after two-step washing tower 8 are separated, thus can qualified discharge.Two-step washing tower 8 is provided with water inlet 19, waste liquid relief outlet 20, tail gas relief outlet 21, pass into water by water inlet 19 and drip washing is carried out to the tail gas that one-level chlorosilane eluting column 7 flows out, the waste liquid obtained is discharged by waste liquid relief outlet 20, and the tail gas obtained is discharged by tail gas relief outlet 21.Certainly, two-step washing tower 8 also can carry out drip washing by alkali lye, and can carry out selection according to the amount of the hydrogenchloride in the tail gas flowed out from one-level chlorosilane eluting column 7 is carry out drip washing or alkali lye drip washing by water.
Aerosil surface processing device in the present embodiment overcomes aerosil surface treatment reaction vent gas treatment difficulty simultaneously, cannot effective separating treatment, easily causes the shortcoming of environmental pollution.
Preferably, described aerosil surface processing device, also comprise: the first handling machinery 9, be connected with described reactor 3, described finished product bin 4 respectively, described first handling machinery 9 is for being sent to the aerosil of the silane surfactant process through overflash described in described reactor 3 in described finished product bin 4.The first handling machinery 9 in the present embodiment is specially the handling machinery of Venturi tube structure.
Preferably, described aerosil surface processing device, also comprise: the second handling machinery 10, be connected with described bag filter 6, described finished product bin 4 respectively, described second handling machinery 10 is for being sent to the aerosil filtering the silane surfactant process through overflash that after-blow is fallen in the broach hopper of bag filter 6 through described bag filter 6 in described finished product bin 4.The second handling machinery 10 in the present embodiment is specially the handling machinery of Venturi tube structure.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present utility model is described and adopts, but the utility model is not limited thereto.For those skilled in the art, when not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.
Claims (8)
1. an aerosil surface processing device, is characterized in that, comprising:
Vaporizer, for vaporizing the silane surfactant of liquid state;
Mixing tank, is connected with described vaporizer, and described mixing tank has carrier gas input port, and described mixing tank is used for the silane surfactant of the vaporization of input to mix with carrier gas;
Reactor, be connected with described mixing tank, there is heating unit for heating in described reactor, the silane surfactant of the vaporization in described carrier gas inputted and aerosil countercurrent flow are reacted, obtains the aerosil of the silane surfactant process through overflash;
Finished product bin, is connected with described reactor, and described finished product bin is for receiving the aerosil of the described silane surfactant process through overflash;
Condenser, is connected with described reactor, and described condenser is used for the silane surfactant condensation of the vaporization in the tail gas flowed out from described reactor to reclaim.
2. aerosil surface processing device according to claim 1, is characterized in that, described reactor is fluidized-bed reactor.
3. aerosil surface processing device according to claim 1, is characterized in that, the condensing temperature of described condenser is-20 ~-35 DEG C, and the pressure in described condenser is 0.1 ~ 0.5Mpa.
4. aerosil surface processing device according to claim 1, it is characterized in that, also comprise: bag filter, be connected with described reactor, described condenser respectively, described bag filter is used for the aerosil in the tail gas flowed out from described reactor to filter out, and the tail gas after filtration is transported to described condenser again.
5. aerosil surface processing device according to claim 1, it is characterized in that, also comprise: one-level chlorosilane eluting column, be connected with described condenser, described one-level chlorosilane eluting column is used for being sponged by the silane surfactant of chlorosilane leacheate by the vaporization be not condensed in described condenser.
6. aerosil surface processing device according to claim 5, it is characterized in that, also comprise: two-step washing tower, be connected with described one-level chlorosilane eluting column, described two-step washing tower is used for the hydrogen chloride absorption in the tail gas flowed out from described one-level chlorosilane eluting column being fallen by washing.
7. aerosil surface processing device according to claim 1, it is characterized in that, also comprise: the first handling machinery, be connected with described reactor, described finished product bin respectively, described first handling machinery is used for the aerosil of the silane surfactant process through overflash described in described reactor to be sent in described finished product bin.
8. aerosil surface processing device according to claim 4, it is characterized in that, also comprise: the second handling machinery, be connected with described bag filter, described finished product bin respectively, described second handling machinery is used for the aerosil of the silane surfactant process through overflash after described bag filter filters to be sent in described finished product bin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420388070.4U CN204111646U (en) | 2014-07-14 | 2014-07-14 | A kind of aerosil surface processing device |
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| CN201420388070.4U CN204111646U (en) | 2014-07-14 | 2014-07-14 | A kind of aerosil surface processing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433223A (en) * | 2015-08-10 | 2017-02-22 | 新特能源股份有限公司 | Fumed silica surface modification method |
| CN111392735A (en) * | 2020-02-20 | 2020-07-10 | 广州汇富研究院有限公司 | Surface modification combined treatment method of fumed silica |
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2014
- 2014-07-14 CN CN201420388070.4U patent/CN204111646U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433223A (en) * | 2015-08-10 | 2017-02-22 | 新特能源股份有限公司 | Fumed silica surface modification method |
| CN111392735A (en) * | 2020-02-20 | 2020-07-10 | 广州汇富研究院有限公司 | Surface modification combined treatment method of fumed silica |
| CN111392735B (en) * | 2020-02-20 | 2021-08-06 | 广州汇富研究院有限公司 | Surface modification combined treatment method of fumed silica |
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