EP3898510A1 - Verfahren zur herstellung von chlorsilanen - Google Patents
Verfahren zur herstellung von chlorsilanenInfo
- Publication number
- EP3898510A1 EP3898510A1 EP18833032.8A EP18833032A EP3898510A1 EP 3898510 A1 EP3898510 A1 EP 3898510A1 EP 18833032 A EP18833032 A EP 18833032A EP 3898510 A1 EP3898510 A1 EP 3898510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reactor
- gas
- reaction gas
- value
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000005046 Chlorosilane Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000012495 reaction gas Substances 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 14
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims abstract description 8
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 57
- 239000007789 gas Substances 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 claims description 3
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical group Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000005049 silicon tetrachloride Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000012071 phase Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000004886 process control Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
- 229910003822 SiHCl3 Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000007038 hydrochlorination reaction Methods 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 241000208140 Acer Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910004721 HSiCl3 Inorganic materials 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 241001223864 Sphyraena barracuda Species 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000001367 organochlorosilanes Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/08—Compounds containing halogen
- C01B33/107—Halogenated silanes
- C01B33/1071—Tetrachloride, trichlorosilane or silicochloroform, dichlorosilane, monochlorosilane or mixtures thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0285—Heating or cooling the reactor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/021—Preparation
- C01B33/027—Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material
- C01B33/035—Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process
Definitions
- Polycrystalline silicon can be produced in the form of rods using the Siemens process, polycrystalline silicon being deposited on heated filament rods in a reactor.
- Silicon granules are produced in a fluidized bed reactor. Silicon particles are fluidized by means of a gas flow in a fluidized bed, this being via a
- halosilanes can be obtained as by-products, for example monochlorosilane (HaSiCl), dichlorosilane (H2SiCl2), silicon tetrachloride (STC, SiCli) and di- and oligosilanes.
- Impurities such as hydrocarbons, organochlorosilanes and metal chlorides can also be part of the by-products.
- a distillation is then usually carried out.
- chlorosilanes can be produced from metallurgical silicon with the addition of hydrogen chloride (HCl) in a fluidized bed reactor, the reaction being exothermic.
- HCl hydrogen chloride
- TCS and STC are the main products.
- chlorosilanes in particular TCS, is the thermal conversion of STC and hydrogen in the gas phase in the presence or absence of a catalyst.
- the high temperature conversion (HTK) according to reaction (3) is an endothermic process. This process usually takes place in a reactor under elevated pressure at temperatures between 600 and 1200 ° C. The reaction is optionally carried out catalytically.
- the known methods are complex and energy-intensive.
- the required energy supply which is usually electrical, represents a considerable cost factor.
- the operational performance e.g. expressed by TCS selectivity-weighted productivity, low high-boiling by-products, energy efficiency
- process analyzers in the gas and / or condensate stream for example process gas chromatograph, can be used (online / in-line and / or non-invasive Measurement).
- process gas chromatograph for example process gas chromatograph
- disadvantageous here is the limited number of devices that can be used, due to the high thermal stress and the aggressive chemical environment.
- Another cost factor are the generally high procurement and
- the mathematical equations can be derived using process simulation programs (e.g. OpenFOAM, ANSYS and Barracuda) or regression programs (e.g. Excel VBA, MATLAB and Maple).
- process simulation programs e.g. OpenFOAM, ANSYS and Barracuda
- regression programs e.g. Excel VBA, MATLAB and Maple.
- the object of the present invention was to improve the economy of the production of chlorosilanes by means of HTK.
- V n , sTc volume flow STC [Nm 3 / h],
- V U , H2 volume flow hydrogen [Nm 3 / h] and
- Pdiff differential pressure of the reaction gas [kg / m * s 2 ].
- the method according to the invention enables integrated, predictive process control in the sense of an “Advanced Process Control (APC)” for the HTK.
- APC Advanced Process Control
- the HTK in particular through process control systems (preferably APC controllers), in the areas according to the invention for K1, K2 and K3 performed, results the greatest possible economic efficiency.
- process control systems preferably APC controllers
- K1, K2 and K3 results the greatest possible economic efficiency.
- the process can be optimized and manufacturing costs reduced by integrating the process.
- Kl has a value from 95 to 1375, particularly preferably from 640 to 780.
- K2 preferably has a value from 20 to 189, particularly preferably from 45 to 85.
- K3 preferably has a value from 24 to 866, particularly preferably from 40 to 300.
- Kl reactor design
- the key figure Kl relates parameters of the reactor geometry to one another.
- An example of a conversion reactor can be found in US4536642.
- the effective volume be ff of the reactor interior VR, e, the sum of all cooled heat exchanger surfaces in the reactor A ges, AT- r is the sum of all heated heat exchanger surfaces in the reactor A ge s, T + and the length of the gas path in the reactor l ge s, gas related to the area factor k and the temperature factor &.
- VR, eff corresponds to the total volume of the reactor interior minus all internals.
- VR, eff is preferably 2 to 15 m 3 , preferably 4 to 9 m 3 .
- the geometry of the reactor interior is also determined by internals located inside.
- the internals can in particular be heat exchanger units, stiffening levels, feeders (lines) for introducing the reaction gas and devices for distributing and / or redirecting the reaction gas (e.g. gas distributor plates).
- a es, D T- and Ages r & T + are referred to as heat-specific areas.
- S ge ⁇ , AT + summarizes the surfaces over which the reactor is fed energy. In particular, these are heating surfaces (eg surfaces of resistance heaters, heat exchanger surfaces that supply energy / heat to the system).
- the areas over which heat / energy is emitted are summarized under A ge s, ⁇ T-. In particular, these are areas of heat exchangers and areas of the reactor wall that give off heat to the outside.
- the cooled heat exchanger surface in the reactor A total , AT- is preferably from 320 to 1,450 m 2 , in particular from 450 to 1,320 m 2 .
- the heated heat exchanger area Aqes, & T + is preferably 90 to 420 m 2 , in particular 120 to 360 m 2 .
- A is saturated, AT is greater than A ges by taking account of the reactor wall, AT +.
- the length of the gas path (from the gas inlet into the reactor to the gas outlet) in or through the reactor is preferably 5 to 70 m, in particular 25 to 37 m.
- all objects can be measured (e.g. the diameter of the interior, the extent of the internals, heat-specific areas), for example using laser measurements / 3D scans (e.g. ZEISS COMET L3D 2).
- laser measurements / 3D scans e.g. ZEISS COMET L3D 2
- these sizes can also be found in the information and / or construction drawings of the reactor manufacturers or can be calculated on the basis of these.
- passive areas are preferred for the HTK because they do not negatively influence the reaction.
- Passive surfaces are, for example, surfaces that are equipped with a protective layer, for example an SiC layer, and are therefore inert both with regard to product formation and with regard to by-product formation.
- the protective layer can also prevent corrosion.
- uncoated graphite surfaces can be attacked by hydrogen and release methane. Additional by-products can result from the methane.
- the surfaces are to be understood here, which indeed have a positive effect on product formation, but unselectively favor both product formation and by-product formation.
- the catalytic surfaces are coated with a catalytically active layer.
- Active surfaces are surfaces that favor the formation of by-products. This can be, for example, uncoated graphite surfaces.
- the catalyst which may be present can be in the form of a coating on a surface in the interior of the reactor.
- the catalyst is particularly preferably selected from the group consisting of Fe, Ni, Cu, Cr, Co, Rh, Ru, Pt, Pd, Zn and mixtures thereof.
- the coating can contain a certain proportion of the catalytically active elements.
- the elements can be present in the coating in oxidic or metallic form, as chlorides, as silicides or in other metallurgical phases.
- the coating can be, in particular, high-density tungsten alloys with the alloy components Ni, Cu, Fe and Mo.
- Tgas, on gas inlet temperature [° C]
- Tgas, regei control temperature [° C].
- Tgas is preferably 80 to 400 ° C, especially 200 to 320 0 C.
- the temperature is measured in the gas stream (e.g. with a
- Tgas, regei is measured in the reaction space as described, for example, in US4536642.
- a large difference between Tgas, on and Tgas means that more additional energy has to be applied. As the difference increases, the cost-effectiveness of the process deteriorates.
- the dimensionless characteristic number K2 describes the composition of the reaction gas before entering the reactor by means of equation 4.
- gas, K2 is determined in particular by the ratio of the supply quantity of STC V n , STC (volume flow STC) and the supply quantity of hydrogen Vn, H2 (volume flow H2).
- Purity of the reaction gas Rges, gas vor Reactor entry relates in particular to the main components STC and H2 and to any chlorosilane that may be present.
- the volume flow of the STC Vn, sTc is preferably 600 to 5,800 Nm 3 / h, in particular 1,100 to 4,500 Nm 3 / h.
- the volume flow of the H2 Vn, a2 is preferably 750 to 13,500 Nni 3 / h, in particular 1,350 to 9,000 Nm 3 / h.
- Volume flow can take place, for example, with a Coriolis flow meter in the line before the reactor inlet.
- the further chlorosilane is preferably
- the reaction gas preferably has an STC and H 2 content and any further chlorosilane present of at least 97%, preferably at least 98%, particularly preferably at least 99%.
- the percentages correspond to the purity R ge s, g as.
- the composition of the reaction gas is usually determined before it is fed to the reactor by means of Ra and infrared spectroscopy and gas chromatography. This can probably be done via random sampling and subsequent "Offline analyzes” as well as “online” analyzers integrated into the system.
- the key figure K3 correlates the generally most important parameters of the HTK. It contains the kinematic viscosity of the fluid V F , the fluid density PF, the effective reactor volume Vs., eff, the differential pressure of the reaction gas pai ff between the reactor inlet and the reactor outlet and the electrical power W ei .
- the fluid density and the kinematic viscosity VF can be determined by simulating (phase) equilibrium states using process engineering software.
- Fluid is generally understood to mean the gaseous reaction mixture in the interior of the reactor.
- the simulations are usually based on adapted equations of state, which, with varying physical parameters (eg p and T), are based on real measured compositions of the reaction mixture both in the gas and in the liquid phase.
- This simulation model can be validated on the basis of real operating states / operating parameters and thus enables the establishment of operating optima with regard to the parameters pF and V F
- the phase equilibria can be determined, for example, using a measuring apparatus (for example modified circulation apparatus according to Rock and Sieg, for example MSK Baraton Type 690, MSK Instruments).
- a measuring apparatus for example modified circulation apparatus according to Rock and Sieg, for example MSK Baraton Type 690, MSK Instruments.
- physical state variables such as pressure and temperature cause changes in the aggregate state.
- the various physical states are then analyzed and the component composition determined, for example with a gas chromatograph. graph.
- State-of-the-art equations can be adjusted using computer-aided modeling to describe the phase equilibria.
- the data are transferred to process engineering software programs so that phase equilibria can be calculated.
- the kinematic viscosity is a measure of the momentum transfer across the direction of flow in a moving fluid.
- the kinematic viscosity VF can be described using the dynamic viscosity and the fluid density.
- the density can be approximated using the Rackett equation, for gases, an approximation using a state equation, e.g. Peng-Robinson.
- the density can be measured with a digital density meter (e.g. DMA 58, Anton Paar) using the bending oscillator method (natural frequency measurement).
- the kinematic viscosity VF 2.5 * 1Ch is preferably 4 to 5.1 * 10 ⁇ 4 m 2 / s, in particular 2.8 * 10 ⁇ 4 to 4.7 * 10 -4 m 2 / s.
- the fluid density pF is preferably 19.5 to 28 kg / m 3 , in particular 21.5 to 26 kg / m 3 .
- the electrical energy Wei is preferably 450,000 to 3,700,000 kg * 2 / s 2 , in particular 500,000 to 3,200,000 kg * 2 / s 2 .
- Wei is generally introduced into the reactor only via resistance heaters. These are in turn dimensioned depending on the reactor size and the amount of reaction gas to be converted (heated).
- the differential pressure p diff of the reaction gas is preferably 0.45 to 3 MPa, in particular 0.6 to 2.6 MPa.
- the pressure in both the feed line of the reaction gases as well as in the discharge of the exhaust gas for example measured with a manometer. Pdiff results from the difference.
- the absolute pressure in the reactor is preferably 4 to 16 MPa.
- the method is preferably integrated in a composite for the production of polysilicon.
- the network preferably comprises the following processes: generation of TCS according to the method according to the invention, purification of the TCS produced to TCS with semiconductor quality, deposition of polysilicon, preferably according to the Siemens method or as granules.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2018/086007 WO2020125982A1 (de) | 2018-12-19 | 2018-12-19 | Verfahren zur herstellung von chlorsilanen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3898510A1 true EP3898510A1 (de) | 2021-10-27 |
Family
ID=65010746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18833032.8A Withdrawn EP3898510A1 (de) | 2018-12-19 | 2018-12-19 | Verfahren zur herstellung von chlorsilanen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20220089449A1 (de) |
EP (1) | EP3898510A1 (de) |
JP (1) | JP2022516245A (de) |
KR (1) | KR20210092797A (de) |
CN (1) | CN113242838A (de) |
TW (1) | TW202023945A (de) |
WO (1) | WO2020125982A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE795913A (fr) * | 1972-02-26 | 1973-06-18 | Degussa | Procede de preparation de chlorosilanes |
DE3024320A1 (de) | 1980-06-27 | 1982-04-01 | Wacker-Chemitronic Gesellschaft für Elektronik-Grundstoffe mbH, 8263 Burghausen | Vorrichtung zur hochtemperaturbehandlung von gasen |
JP3708648B2 (ja) * | 1995-12-25 | 2005-10-19 | 株式会社トクヤマ | トリクロロシランの製造方法 |
DE19654154A1 (de) * | 1995-12-25 | 1997-06-26 | Tokuyama Corp | Verfahren zur Herstellung von Trichlorsilan |
DE102005005044A1 (de) * | 2005-02-03 | 2006-08-10 | Consortium für elektrochemische Industrie GmbH | Verfahren zur Herstellung von Trichlorsilan mittels thermischer Hydrierung von Siliciumtetrachlorid |
DE102006050329B3 (de) * | 2006-10-25 | 2007-12-13 | Wacker Chemie Ag | Verfahren zur Herstellung von Trichlorsilan |
DE102008041974A1 (de) * | 2008-09-10 | 2010-03-11 | Evonik Degussa Gmbh | Vorrichtung, deren Verwendung und ein Verfahren zur energieautarken Hydrierung von Chlorsilanen |
DE102010039267A1 (de) * | 2010-08-12 | 2012-02-16 | Evonik Degussa Gmbh | Verwendung eines Reaktors mit integriertem Wärmetauscher in einem Verfahren zur Hydrodechlorierung von Siliziumtetrachlorid |
DE102011005643A1 (de) * | 2011-03-16 | 2012-09-20 | Evonik Degussa Gmbh | Reaktorkonzept zur Umsetzung von Organochlorsilanen und Siliciumtetrachlorid zu wasserstoffhaltigen Chlorsilanen |
KR20140136985A (ko) * | 2012-03-14 | 2014-12-01 | 센트로섬 포토볼타익스 유에스에이, 인크. | 트리클로로실란의 제조 |
DE102012223784A1 (de) * | 2012-12-19 | 2014-06-26 | Wacker Chemie Ag | Verfahren zur Konvertierung von Siliciumtetrachlorid in Trichlorsilan |
DE102015210762A1 (de) | 2015-06-12 | 2016-12-15 | Wacker Chemie Ag | Verfahren zur Aufarbeitung von mit Kohlenstoffverbindungen verunreinigten Chlorsilanen oder Chlorsilangemischen |
-
2018
- 2018-12-19 EP EP18833032.8A patent/EP3898510A1/de not_active Withdrawn
- 2018-12-19 KR KR1020217018711A patent/KR20210092797A/ko not_active Application Discontinuation
- 2018-12-19 JP JP2021535671A patent/JP2022516245A/ja active Pending
- 2018-12-19 WO PCT/EP2018/086007 patent/WO2020125982A1/de unknown
- 2018-12-19 US US17/309,805 patent/US20220089449A1/en not_active Abandoned
- 2018-12-19 CN CN201880100305.6A patent/CN113242838A/zh active Pending
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- 2019-11-29 TW TW108143627A patent/TW202023945A/zh unknown
Also Published As
Publication number | Publication date |
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CN113242838A (zh) | 2021-08-10 |
KR20210092797A (ko) | 2021-07-26 |
TW202023945A (zh) | 2020-07-01 |
WO2020125982A1 (de) | 2020-06-25 |
JP2022516245A (ja) | 2022-02-25 |
US20220089449A1 (en) | 2022-03-24 |
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