CN101830495A - Comprehensive utilization method of chlorosilane - Google Patents
Comprehensive utilization method of chlorosilane Download PDFInfo
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- CN101830495A CN101830495A CN 201010158767 CN201010158767A CN101830495A CN 101830495 A CN101830495 A CN 101830495A CN 201010158767 CN201010158767 CN 201010158767 CN 201010158767 A CN201010158767 A CN 201010158767A CN 101830495 A CN101830495 A CN 101830495A
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- chlorosilane
- comprehensive utilization
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- calcium chloride
- calcium
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- 239000005046 Chlorosilane Substances 0.000 title claims abstract description 61
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000460 chlorine Substances 0.000 claims abstract description 32
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 30
- 239000001110 calcium chloride Substances 0.000 claims abstract description 30
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011575 calcium Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 21
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 17
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 16
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000005997 Calcium carbide Substances 0.000 claims description 2
- 239000012429 reaction media Substances 0.000 claims description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 229910021420 polycrystalline silicon Inorganic materials 0.000 abstract description 15
- 239000000378 calcium silicate Substances 0.000 abstract description 10
- 229910052918 calcium silicate Inorganic materials 0.000 abstract description 10
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 10
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 abstract description 8
- 239000005052 trichlorosilane Substances 0.000 abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 19
- 239000000047 product Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 13
- 229920005591 polysilicon Polymers 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 230000035484 reaction time Effects 0.000 description 10
- 239000000377 silicon dioxide Substances 0.000 description 9
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a comprehensive utilization method of chlorosilane, in particular to a method for producing calcium chloride and calcium silicate by using chlorosilane, especially chlorosilane byproducts in the production processes of organic silicon, trichlorosilane and polycrystalline silicon as raw materials. The technical scheme of the invention comprises the following steps: enabling the chlorosilane and calcium-containing materials to be subject to a gas-solid-liquid or solid-liquid reaction in water or water vapor medium at 30-350 DEG C under a pressure condition ranging from normal pressure to 5MPa, and adopting solid-liquid separation to obtain the calcium chloride and the calcium silicate after the completion of the reaction, wherein the chlorosilane is SinHmCl2n+2-m, m is 0, 1, or 2, and n is 1, 2 or 3. The chlorosilane can be safely and effectively treated by the method, the chlorine element in the chlorosilane can be used for producing the calcium chloride, and the silicon element in the chlorosilane can be used for producing the calcium silicate, thereby eliminating the potential environmental hazard of the chlorosilane byproduct of the organic silicon, trichlorosilane and polycrystalline silicon, and simultaneously achieving the purpose of maximizing resources.
Description
Technical field
The present invention relates to a kind of method of comprehensive utilization of chlorosilane, more specifically, relate to a kind of chlorosilane that utilizes and especially utilize the method for the chlorosilane of organosilicon, trichlorosilane and polysilicon production process by-product for raw material production calcium chloride and Calucium Silicate powder.
Background technology
The production of organosilicon, trichlorosilane and polysilicon is a large amount of by-product chlorosilane of by-product all, and especially along with the continuous operation of polycrystalline silicon device, the consequent is with SiCl
4It is the rapid increase of master's by-product chlorosilane quantity.1 ton of polysilicon of every according to statistics production with by-product with SiCl
4Be 10～15 tons of main chlorosilanes, a large amount of by-product chlorosilanes have become the bottleneck of restriction polysilicon industry development, also environment are caused potential harm simultaneously.
In the world to the polysilicon by-product with SiCl
4Several technology has been developed in the processing that is master's chlorosilane, wherein at SiCl
4Processing developed cold hydro-reduction and two kinds of technologies of hot hydro-reduction.Cold hydro-reduction technology is to utilize hydrogen with SiCl under lower temperature and higher pressure
4Be reduced to SiHCl
3, disclose at nickel catalyzator and silica flour as patent CN85107465, CN1436725 and to have existed under the situation, at 400～500 ℃, reduce SiCl with hydrogen under 1～2MPa pressure condition
4Be SiHCl
3Method.This method is because needs use silica flour, and silica flour continuous charging problem under the still unresolved at present high pressure, therefore domestic have only minority enterprise to adopt this class methods.In addition, other polysilicon enterprises have introduced another and have been called as the technology of hot hydro-reduction from external, are promptly carrying out hydro-reduction up to the temperature more than 1000 ℃.Existing production practice show that there are shortcomings such as the single transformation efficiency is low, by product complexity in hot hydro-reduction technology.Production data shows, whenever obtains 1 ton of SiHCl
3With 0.1～0.2 ton of more unmanageable Si of by-product
2H
2Cl
4, Si
2Cl
6, Si
3Cl
8Deng chlorosilane, and energy consumption height, cost are also high.
Another processing mode to chlorosilane is to be used for the production derived product, as thermal silica, and photoconductive fiber, organosilicon etc.It is that raw material (wherein also comprises SiCl that Chinese patent CN1686791 discloses with the by product in the organosilicon production
4And SiHCl
3) technology of producing thermal silica; Chinese patent CN1208016 discloses with SiCl
4Technology for the raw material production thermal silica.The market study of dialogue sooty shows that the thermal silica consumption is not as good as 5% of the white carbon black aggregate consumption, and market capacity is very limited.Another uses SiCl
4The important derived product of producing is the tetraethyl silicate in the organosilicon, utilizes SiCl
4Producing tetraethyl silicate is sophisticated technology, but there is the little problem of market capacity equally in tetraethyl silicate.Therefore, no matter be thermal silica or tetraethyl silicate, all be difficult to consume polysilicon enterprise by-product with SiCl
4It is main chlorosilane.
In addition, the production utilization of thermal silica and tetraethyl silicate all be element silicon in the chlorosilane, with SiCl
4Be example, element silicon only accounts for 16.5% of its molecular mass, and all the other chlorine elements of 83.5% all are not fully utilized.Therefore, from the utilization of resources, the angle of atom economy is set out, and how effectively to utilize the chlorine element in the chlorosilane, and it is big to obtain market capacity simultaneously, and the chlorinated products that added value is high seems even more important.
Meanwhile, calcium chloride is a kind of important chloride Chemicals, and market capacity is big, is widely used in aspects such as freezing, road snow removing, oil recovery auxiliary agent, sewage disposal, cement antifreezing agent.The in the past technologies of hydrochloric acid and Wingdale reaction of using of the production of calcium chloride make more, announced a kind of method as Chinese patent CN91106411.7 with hydrochloric acid and Wingdale ore pulp prepared in reaction liquid calcium chloride, the calcium chloride quality product height that this method makes, but single cost is also high.Using the waste ammonia-soda solution legal system to get calcium chloride in recent years becomes main flow, but alkali metal chloride content is higher in the calcium chloride product that the waste ammonia-soda solution method makes, and especially the content of sodium-chlor has limited the quality and the purposes of this series products up to 7%.
Summary of the invention
Technical problem to be solved by this invention provides a kind of chlorosilane comprehensive utilization method, and is not only safe but also effective.Promptly utilize the chlorosilane of organosilicon, trichlorosilane and polysilicon production process by-product to be raw material production calcium chloride and Calucium Silicate powder, improved the comprehensive utilization value of chlorosilane.
Technical scheme of the present invention: with the chlorosilane is raw material, prepares calcium chloride and Calucium Silicate powder with the calcic raw material reaction.Gas-solid-liquid or solid-liquid reaction (10～200min) take place in 30～350 ℃, normal pressure～5MPa condition in chlorosilane and calcic material in water or the water vapor medium; The reaction products therefrom obtains calcium chloride and Calucium Silicate powder through liquid-solid separation.Calcium chloride at liquid phase, Calucium Silicate powder in solid phase.
Wherein, described chlorosilane is Si
nH
mCl
2n+2-m, m=0,1 or 2 wherein; N=1,2 or 3.
Further, described chlorosilane can be SiCl
4, Si
2Cl
6, Si
3Cl
8, SiH
2Cl
2, SiHCl
3Or Si
2H
2Cl
4In at least a.
Can obtain the amorphous structure Calucium Silicate powder according to the inventive method.
Temperature of reaction is controlled at 30～350 ℃.Preferred temperature of reaction is 50-180 ℃, when temperature is too high reaction violent, be difficult to control, it is slow excessively that temperature is crossed when low speed of reaction.
Reaction pressure is controlled at normal pressure～5MPa, adds pressure energy and improves speed of reaction to a certain extent, uses too high pressure can increase the reactor cost.
Reaction time is controlled at 10～200min, adopt lower temperature to need long reaction time, as adopt 30 ℃ of the reaction times to reach 200min, improve temperature and then can shorten reaction time, as when adopting 350 ℃, reaction time only needs 10min.
Chlorosilane and calcic material use magnitude relation: M
Ca=2M
Cl+ M
Si, M wherein
CaBe the molar weight of Ca in the calcic material, M
ClAnd M
SiIt is the molar weight of chlorine and silicon in the chlorosilane.
The consumption of reaction medium water or water vapour is 50%～350% of chlorosilane and a calcic material gross weight.
The present invention is used to prepare its main component of calcic material of calcium chloride by CaO, Ca (OH)
2, CaCO
3In one or more formations, specifically comprise Wingdale, lime, lime white, calcium hydroxide, carbide slag etc.
The Calucium Silicate powder of the present invention's preparation belongs to amorphous structure.
Though organosilicon, trichlorosilane and polysilicon by-product chlorosilane are by products, elementary composition middle content of Cl element is high, with SiCl
4Be example, its content of Cl element is up to 83.5%, and other impurity contents can be controlled very lowly; Therefore, the technology of utilizing chlorosilane to produce calcium chloride can not only reach the resource maximum using, realizes the purpose of recycling economy, and has opened up the novel process that calcium chloride, Calucium Silicate powder are produced.
The inventive method is safety but also effectively handle chlorosilane not only, utilize chlorine element production calcium chloride in the chlorosilane, the method of utilizing element silicon wherein to produce Calucium Silicate powder, eliminate the potential hazard that organosilicon, trichlorosilane and polysilicon by-product chlorosilane cause environment with this, reach the purpose of resource maximum using simultaneously.
Description of drawings
Fig. 1 is the XRD figure that adopts the inventive method gained calcium silicate products.
Fig. 2 is the SEM figure that adopts the inventive method gained calcium silicate products.
Embodiment
Below by embodiment the specific embodiment of the present invention is carried out more specific description, but it only is used to illustrate embodiments more of the present invention, and should not be construed as qualification protection domain of the present invention.
Embodiment 1
Chlorosilane is taken from polysilicon factory, and main component is SiCl
4, also contain a small amount of Si
2Cl
6And Si
3Cl
8, what calcareous raw material used is calcium oxide.Chlorosilane, calcium oxide, water vapor feed reactor simultaneously, and delivery rate is 90kg/h, 100kg/h and 95kg/h.The reactor front end is elevated to 180 ℃ with temperature of charge, and back segment is reduced to 50 ℃ by the internal cooling pipe with temperature, and reaction pressure is controlled at 0.5MPa, reaction time 30min.Reaction product obtains calcium chloride and calcium silicate products through separating, the total alkali metal chloride of calcium chloride (in NaCl) 0.5% after testing, and total magnesium is (with MgCl
2Meter) 0.2%, basicity is [with Ca (OH)
2Meter] 0.2%, water-insoluble 0.2%.The crystalline structure of Calucium Silicate powder uses the XRD test, and the XRD test result is seen Fig. 1, and test result shows that sample is an amorphous structure.The granularity of Calucium Silicate powder uses scanning electronic microscope (SEM) to observe, and test result is seen Fig. 2, and the result shows, the loose bulk structure that the product Calucium Silicate powder is reunited and formed by 0.1 micron primary particle.
Chlorosilane is that the purity of taking from polysilicon factory is 99.9999% SiCl
4, calcareous use be dry powder (limestone powder).In the disposable adding reactor of 1760kg limestone powder, SiCl
4Reach water and feed reactor with vapor form, the feed total amount is that 900kg and 5000kg temperature of reaction are controlled at 350 ℃, and reaction pressure is controlled at about 5MPa, reaction time 10min.Reaction product obtains calcium chloride and Calucium Silicate powder through separating.The total alkali metal chloride of calcium chloride (in NaCl) 0.5% after testing, total magnesium is (with MgCl
2Meter) 0.5%, basicity is [with Ca (OH)
2Meter] 0.2%, water-insoluble 0.1%, calcium silicate products is amorphous structure through the XRD test.
Embodiment 3
Chlorosilane is taken from the product of trichlorine hydrogen producer light constituent rectifying tower cat head, and its composition is SiH
2Cl
270%, SiHCl
330%, calcareous use be calcium hydroxide.Chlorosilane, calcium hydroxide and water add in the reactor continuously, for preventing SiH
2Cl
2Be subjected to the danger of thermal explosion, temperature of reaction is controlled at 30 ℃, and reaction pressure is controlled at normal pressure, reaction time 200min.Reaction product obtains calcium chloride and Calucium Silicate powder through separating.The total alkali metal chloride of calcium chloride (in NaCl) 0.5% after testing, total magnesium is (with MgCl
2Meter) 0.1%, basicity is [with Ca (OH)
2Meter] 0.2%, water-insoluble 0.1%.Calcium silicate products is amorphous structure through the XRD test.
Embodiment 4
Chlorosilane is that to take from the rectifying still of trichlorosilane factory residual, and main component is SiCl
4, also contain a small amount of SiHCl
3, what calcareous raw material used is the dry powder of carbide slag.Chlorosilane, carbide slag and water add in the reactor continuously, chlorosilane feeding rate 30kg/h, calcium carbide ground-slag feeding rate 50kg/h, the feeding rate 280kg/h of water, temperature of reaction is controlled at 250～255 ℃, and reaction pressure maintains about 3MPa, and reaction time is controlled at 20min.Reaction product obtains calcium chloride and calcium silicate products through separation, the total alkali metal chloride of calcium chloride (in NaCl) 3.5% after testing, and total magnesium is (with MgCl
2Meter) 0.2%, basicity is [with Ca (OH)
2Meter] 0.2%, water-insoluble 0.2% meets the chemical industry standard HG/T 2327-2004 of calcium chloride.The crystalline structure of Calucium Silicate powder uses the XRD test, and the result is indicated as amorphous structure.
Embodiment 5
Chlorosilane is the Si that purifies through separating
2Cl
6, contain a spot of Si
3Cl
8And Si
2H
2Cl
4, what calcareous raw material used is lime white.Chlorosilane, lime white, water add reactor simultaneously, and feed rate is 90kg/h, 200kg/h and 350kg/h.The reactor front end is elevated to 130 ℃ with temperature of charge, and back segment is reduced to 50 ℃ by the internal cooling pipe with temperature, and reaction pressure is controlled at 0.2MPa, reaction time 50min.Reaction product obtains calcium chloride and calcium silicate products through separating, the total alkali metal chloride of calcium chloride (in NaCl) 0.6% after testing, and total magnesium is (with MgCl
2Meter) 0.3%, basicity is [with Ca (OH)
2Meter] 0.2%, water-insoluble 0.3%.The crystalline structure of Calucium Silicate powder uses the XRD test, and the result is indicated as amorphous structure.
Claims (6)
1. the method for comprehensive utilization of chlorosilane, it is characterized in that: chlorosilane and calcic material are under 30～350 ℃, normal pressure～5MPa condition, gas-solid-liquid or solid-liquid reaction take place in water or the water vapor medium, adopt solid-liquid separation to obtain calcium chloride, Calucium Silicate powder after reaction is finished; Wherein, described chlorosilane is Si
nH
mCl
2n+2-m, m=0,1 or 2 wherein; N=1,2 or 3.
2. according to the method for comprehensive utilization of the described chlorosilane of claim 1, it is characterized in that: described chlorosilane is SiCl
4, Si
2Cl
6, Si
3Cl
8, SiH
2Cl
2, SiHCl
3Or Si
2H
2Cl
4In at least a.
3. according to the method for comprehensive utilization of the described chlorosilane of claim 1, it is characterized in that: the main component of described calcic material is by CaO, Ca (OH)
2And CaCO
3In at least a composition.
4. according to the method for comprehensive utilization of the described chlorosilane of claim 3, it is characterized in that: described calcic material is Wingdale, lime, lime white, calcium hydroxide or carbide slag.
5. according to the method for comprehensive utilization of each described chlorosilane of claim 1-4, it is characterized in that: chlorosilane and calcic material use magnitude relation: M
Ca=2M
Cl+ M
Si, M wherein
CaBe the molar weight of Ca in the calcic material, M
ClAnd M
SiIt is the molar weight of chlorine and silicon in the chlorosilane.
6. according to the method for comprehensive utilization of the described chlorosilane of claim 5, it is characterized in that: the consumption of reaction medium water or water vapour is 50%～350% of chlorosilane and a calcic material gross weight.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500213A (en) * | 2011-10-27 | 2012-06-20 | 内蒙古锋威硅业有限公司 | Waste gas and waste liquid treatment method in polycrystalline silicon production |
| CN105253864A (en) * | 2015-11-13 | 2016-01-20 | 宁波盛优科技服务有限公司 | Silicon nitride powder preparation method |
| CN108502887A (en) * | 2018-04-28 | 2018-09-07 | 福州大学 | A kind of preparation method of the silicide of chemical method synthesis calcium |
| CN108863267A (en) * | 2018-07-19 | 2018-11-23 | 河北科技大学 | A kind of preparation method of heavy metal curing agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172610A (en) * | 2007-11-22 | 2008-05-07 | 中国矿业大学(北京) | Method of producing high-temperature silica flour body |
| CN101386415A (en) * | 2008-10-21 | 2009-03-18 | 魏昭荣 | Method for preparing inorganic chemical product using waste produced by polycrystalline silicon |
-
2010
- 2010-04-29 CN CN 201010158767 patent/CN101830495B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172610A (en) * | 2007-11-22 | 2008-05-07 | 中国矿业大学(北京) | Method of producing high-temperature silica flour body |
| CN101386415A (en) * | 2008-10-21 | 2009-03-18 | 魏昭荣 | Method for preparing inorganic chemical product using waste produced by polycrystalline silicon |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500213A (en) * | 2011-10-27 | 2012-06-20 | 内蒙古锋威硅业有限公司 | Waste gas and waste liquid treatment method in polycrystalline silicon production |
| CN102500213B (en) * | 2011-10-27 | 2013-12-11 | 内蒙古锋威硅业有限公司 | Waste gas and waste liquid treatment method in polycrystalline silicon production |
| CN105253864A (en) * | 2015-11-13 | 2016-01-20 | 宁波盛优科技服务有限公司 | Silicon nitride powder preparation method |
| CN105253864B (en) * | 2015-11-13 | 2017-07-11 | 宁夏胜蓝化工环保科技有限公司 | A kind of preparation method of beta-silicon nitride powder |
| CN108502887A (en) * | 2018-04-28 | 2018-09-07 | 福州大学 | A kind of preparation method of the silicide of chemical method synthesis calcium |
| CN108863267A (en) * | 2018-07-19 | 2018-11-23 | 河北科技大学 | A kind of preparation method of heavy metal curing agent |
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