CN203507699U - Cloth bag type dust collector for producing silicon tetrachloride by using direct method - Google Patents
Cloth bag type dust collector for producing silicon tetrachloride by using direct method Download PDFInfo
- Publication number
- CN203507699U CN203507699U CN201320699385.6U CN201320699385U CN203507699U CN 203507699 U CN203507699 U CN 203507699U CN 201320699385 U CN201320699385 U CN 201320699385U CN 203507699 U CN203507699 U CN 203507699U
- Authority
- CN
- China
- Prior art keywords
- silicon tetrachloride
- cloth bag
- dust
- direct method
- outlet
- 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.)
- Expired - Lifetime
Links
- 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 title claims abstract description 41
- 239000005049 silicon tetrachloride Substances 0.000 title claims abstract description 41
- 239000004744 fabric Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000428 dust Substances 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 29
- 239000012716 precipitator Substances 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 9
- 238000000638 solvent extraction Methods 0.000 abstract 3
- 239000011863 silicon-based powder Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 40
- 239000007789 gas Substances 0.000 description 30
- 239000012043 crude product Substances 0.000 description 19
- 239000000377 silicon dioxide Substances 0.000 description 19
- 235000013312 flour Nutrition 0.000 description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 229910052801 chlorine Inorganic materials 0.000 description 12
- 239000000460 chlorine Substances 0.000 description 12
- 239000007921 spray Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 239000003518 caustics Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000005046 Chlorosilane Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical compound C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 3
- 239000005052 trichlorosilane Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010011906 Death Diseases 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910021331 inorganic silicon compound Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Abstract
The utility model relates to a cloth bag type dust collector for producing silicon tetrachloride by using a direct method. The cloth bag type dust collector comprises a shell and a plurality of cloth bag devices, wherein the shell is externally provided with a partitioning plate; the partitioning plate is used for dividing the shell into a dust collecting chamber and an air outlet chamber; the cloth bags are fixedly arranged on the partitioning plate; a dust collecting air inlet is formed in the upper part of the dust collecting chamber; a dust outlet is formed in the bottom of the dust collecting chamber; a fine dust recycling tank is arranged below the dust outlet; a dust collector air outlet is formed in the side wall of the air outlet chamber; a heating jacket is arranged on the outer side wall of the dust collecting chamber; the plurality of cloth bags are all made of high temperature resisting materials. By adopting the technical scheme, a small amount of fine silicon powder in a crude gas product is recycled through the cloth bag dust collector, so that most silicon powder in crude gas silicon tetrachloride can be removed, and dust collection in later process is avoided.
Description
Technical field
The utility model belongs to organic silicon monomer synthesis technical field, relates in particular to the fiber bag precipitator that a kind of direct method is produced silicon tetrachloride.
Background technology
Silicon tetrachloride, molecular formula: SiCl
4, for colourless, be corrosive, non-combustible liquid, have suffocative stink.While being exposed to humid air, form dense smoke, hydrogen chloride is emitted in hydrolysis rapidly.57.6 ℃ of boiling points.Fusing point-70.0 ℃.Can be used for manufacturing organo-silicon compound, as fume colloidal silica, ethyl orthosilicate, organic silicone oil, high-temperature insulation paint, organic siliconresin, silicon rubber and heat resistant pad lining material.High purity silicon tetrachloride is for manufacturing the material of polysilicon, high-purity silicon dioxide and inorganic silicon compound, quartz fibre, and war industry is for the manufacture of screening smoke, and metallurgical industry is for the manufacture of corrosion-resistant ferrosilicon, and foundary industry is used as releasing agent etc.At present, the impact of photovoltaic industry external owing to being subject to " two anti-", almost in the situation of being annihilated, the raw material trichlorosilane device of polysilicon, also almost in full end-of-life state, only has few device to move in carry-deficit, and this has just caused the silicon tetrachloride as by-product of this industry fewer and feweri, silicon tetrachloride becomes tight pin product by the accessory substance of giving it up, price, from freely, increases to more than 4000 yuan/ton, and also can't buy on market.
Publication number be the Chinese patent of CN102712485A disclose a kind of by organic compound combustion generate electricity ash that manufacture technique produces, preferably organic compound combustion is converted to Combustion Energy under the existence of the grey carbonaceous material that the generating equipment of electric power produces to the method for the silicon-containing material chlorination production silicon tetrachloride that by silicon-containing material, preferably contains silicic acid living beings.Publication number is that the Chinese patent of CN102686514A also discloses a kind of granulation body and chlorine, oxygen that utilizes silica and carbonaceous material to form and carries out common chlorination reaction, generate the chlorinating step of silicon tetrachloride, and then silicon tetrachloride is generated to polysilicon with reducing agent metallic reducing.It is a kind of by the mixture of fine and/or unbodied silica, carbon and energy donor being changed to manufacture with chlorine the method for silicon tetrachloride that publication number is that the Chinese patent of CN101472839 also discloses.Energy donor is metallic silicon or silicon alloy, and the interpolation of donor has realized the exothermic reaction of self-supporting on the one hand, has caused on the other hand showing of reacting initial temperature to be reduced.
Patent USP4490344, USP4604272, USP4847059, DE3438444/A1 and EP00077138 are by adding the mode of catalyst, reduce chlorine, silica and carbon reaction and produce the method for the temperature of silicon tetrachloride, main group and the chlorine-containing compound of subgroup, preferably boron chloride and phosphorous oxychloride etc. that the catalyst using is the periodic table of elements the 5th.
Publication number is that the Chinese patent of CN1114559C discloses and a kind ofly by by least having the chlorosilane of a HSi key in silicon, ferro-alloy metal or molecule, reacts under catalyst action with hydrogen chloride, thereby highly selective is produced the method for silicon tetrachloride.The utility model provides a kind of catalyst of manufacturing the method for silicon tetrachloride comprise at least one periodic table VIII family's metallic element or its compound and be a kind ofly selected from periodic table VB family's period 3 and under the mixture of the element simple substance in cycle exists subsequently, make at least to have in silicon metal or molecule chlorosilane and the hcl reaction of a HSi key.USP3754077, USP4130632 disclose a kind of silicon, aluminium alloy and hydrogen chloride or chlorine gas of utilizing and have reacted, and generate the method for trichlorosilane or silicon tetrachloride.USP4980143 has introduced a kind of reaction with silica flour at hydrogen chloride in the process that generates trichlorosilane and silicon tetrachloride mixture, by changing the reaction conditions such as temperature, can improve the content of silicon tetrachloride in mixed chlorosilane.Owing to there are a plurality of chlorosilane components in course of reaction in these, later separation purifying process step is comparatively loaded down with trivial details.
The people such as the Fu Xuehong (research of the synthetic silicon tetrachloride of abandoned catalyst in direct synthesis methylchlorosilane, organosilicon material, 2011, 25(6): 397-401, the 13 Chinese organosilicon seminar collection of thesis in 2006), Yan Shicheng (the research of the synthetic silicon tetrachloride new technology of abandoned catalyst in direct synthesis methylchlorosilane, Northeast Electric Power University's journal, 2010, 30(6): 36-39.) Chinese patent CN1465524A etc. has introduced with (75% the Si of the waste catalyst in methyl chlorosilane monomer production process, 10 ~ 15% Cu) be primary raw material, in the fluidized-bed reactor that is 600mm at diameter, synthesize the method for silicon tetrachloride with chlorine generation gas-solid reaction.
Applicant has applied for Chinese invention patent (number of patent application: 2013103609093, patent application day: 2013-8-19) disclose a kind of process units that utilizes direct method to produce silicon tetrachloride, this device comprises chlorine generating means, silica flour feeding device, fluidized-bed reactor, cyclone separator, fiber bag precipitator, spray column and caustic wash tower, chlorine generating means connects the air inlet of fluidized-bed reactor, silica flour feeding device connects the charge door of fluidized-bed reactor, the skin of fluidized-bed reactor is provided with heating jacket, the gas outlet on fluidized-bed reactor top is connected with heat exchanger, the discharging opening of heat exchanger connects cyclone separator, the discharge gate of cyclone separator bottom refluxes respectively and is connected to described fluidized-bed reactor, the gas outlet on cyclone separator top connects described fiber bag precipitator, the gas outlet on fiber bag precipitator top connects described spray column, the gas outlet on spray column top is connected with condenser, the discharging opening of condenser is connected with silicon tetrachloride crude product storage tank, described silicon tetrachloride crude product storage tank connects described rectifier unit, the gas outlet of described condenser connects described caustic wash tower.
Summary of the invention
The purpose of this utility model is to provide the fiber bag precipitator that a kind of direct method is produced silicon tetrachloride, and this fiber bag precipitator can be removed silica flour in silicon tetrachloride crude product gas effectively.
In order to realize above-mentioned object, the utility model has adopted following technical scheme:
A kind of direct method is produced the fiber bag precipitator of silicon tetrachloride, this fiber bag precipitator comprises shell body and a plurality of cloth bag device, in shell body, be provided with dividing plate, dividing plate is divided into dedusting chamber and outlet chamber by shell body, cloth bag device is fixedly installed on dividing plate, the top in dedusting chamber is provided with deduster air inlet, dust outlet is set in the bottom in dedusting chamber, dust outlet below is provided with fine powder recycling can, the sidewall of described outlet chamber is provided with deduster gas outlet, the lateral wall in described dedusting chamber is provided with heating jacket, described a plurality of cloth bag devices all adopt high temperature resistant material.
As preferably, in the dedusting chamber, inner side of described deduster air inlet, be provided with gas block panel.
As preferably, described fiber bag precipitator is also connected with cloth bag pulsed dust-removing device, cloth bag pulsed dust-removing device comprises compressed air cylinder, a plurality of Venturi tube, pulse control instrument and a plurality of pulse valve, described a plurality of pulse valves are arranged on a plurality of pipelines that are connected to compressed air cylinder and by pulse control instrument, are controlled respectively, a plurality of Venturi tubes connect described a plurality of pipelines, and the gas outlet of a plurality of Venturi tubes is connected respectively to the inside of described cloth bag device.
As preferably, described fiber bag precipitator is also provided with pressure detecting module, and described pressure detecting module is connected with pulse control instrument.
As preferably, described heating jacket adopts heat-conducting oil heating, on the top of heating jacket, is provided with oil-in, and bottom is provided with oil-out.
As preferably, the top in described dedusting chamber is cylinder, and bottom is cone, at the lateral wall of cone, is provided with access hole.
The utility model, owing to having adopted above-mentioned technical scheme, reclaims by sack cleaner for thinner silica flour a small amount of in gas crude product, like this can most of silica flour of removing silicon tetrachloride crude product gas, avoided carrying out in subsequent technique dedusting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model silicon tetrachloride process units.
Fig. 2 is the structural representation of cyclone separator.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the structural representation of sack cleaner.
Fig. 5 is the top view of Fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is made a detailed explanation.
A kind of process units that utilizes direct method to produce silicon tetrachloride as shown in Figure 1, this device comprises liquid chlorine storage tank 1, chlorine liquid carburetor 3, silica flour feeding device 5, fluidized-bed reactor 6, primary cyclone 10, secondary cyclone 11, fiber bag precipitator 12, spray column 14, caustic wash tower 18 etc.Wherein between the entrance of the outlet of liquid chlorine storage tank 1 and chlorine liquid carburetor 3, with canned motor pump 2, be connected, be convenient to carrying out continuously of reaction.Between chlorine liquid carburetor 3 and fluidized-bed reactor 6, be connected with vacuum buffer tank 4, be convenient to stable being passed in fluidized-bed reactor 6 of air velocity of the chlorine after vaporization.Described silica flour feeding device 5 is connected with nitrogen pipeline 21 above, and nitrogen pipeline 21 is provided with valve, by valve, is controlled and continuously silica flour is added to fluidized-bed reactor 6 bottoms.Fluidized-bed reactor adopts the heating jacket of oil bath heating, and heating jacket is provided with conduction oil entrance 8 and conduction oil outlet 7.The gas outlet on fluidized-bed reactor 6 tops is connected with heat exchanger 9, and the discharging opening of heat exchanger 9 connects described primary cyclone 10.As shown in Figure 2 and Figure 3, the gas outlet on primary cyclone 10 tops connects described secondary cyclone 11, and the discharge gate of primary cyclone 10 and secondary cyclone 11 bottoms refluxes respectively and is connected to described fluidized-bed reactor 6.Fluidized-bed reactor 6 outlet products are after heat exchanger 9 coolings, gas crude product is after primary cyclone 10 is separated with secondary cyclone 11, and the most of solid fine silica powder in gas crude product reclaims to enter in fluidized-bed reactor 6 and continues as raw material reaction.The gas outlet on described secondary cyclone 11 tops connects described fiber bag precipitator 12, the bottom of fiber bag precipitator 12 is connected with fine powder recycling can 13, makes thinner silica flour a small amount of in gas crude product by entering fine powder recycling can 13 after sack cleaner 12 recovery.Sack cleaner 12 outlet products enter spray column 14, the SiCl of spray liquid for using through the condensed partial reflux of condenser 16
4crude product, the gas outlet on spray column 14 tops is connected with condenser 16, and the discharging opening of condenser 16 connects branch line, and branch line one end is connected with silicon tetrachloride crude product storage tank 17, the other end connects the shower nozzle of described spray column 14, and spray column 14 bottoms are the high slag slurry storage tank 15 that boils of liquid.The SiCl of silicon tetrachloride crude product storage tank 17 for gathering
4crude product, can be used for further rectification and purification and uses.Condenser 16 unreacted is out chlorine gas mixture completely, generates the products such as clorox through caustic wash tower 18 with NaOH solution reaction, and product clorox enters clorox storage tank 19 and collects, and other on-condensible gas is discharged through drain 20.
As shown in Figure 4, described fiber bag precipitator 12 comprises shell body 21 and a plurality of cloth bag device 32, in shell body 21, be provided with dividing plate 22, dividing plate 22 is divided into dedusting chamber 23 and outlet chamber 24 by shell body 21, lateral wall in dedusting chamber 23 is provided with heating jacket 29, heating jacket 29 adopts heat-conducting oil heating, on the top of heating jacket 29, be provided with oil-in 30, bottom is provided with oil-out 31, because silicon tetrachloride crude product gas is being lowered the temperature through primary cyclone 10 and secondary cyclone 11, if temperature is too low in fiber bag precipitator, can condense into liquid and stop up cloth bag device 32, therefore need to keep silicon tetrachloride crude product gas to mend by heating jacket 29 condenses.The top in dedusting chamber 23 is cylinder, bottom is cone, the top in dedusting chamber 23 is provided with deduster air inlet 25, deduster air inlet 25 connects the gas outlet on secondary cyclone 11 tops, in dedusting chamber, the inner side of deduster air inlet 25 23, be provided with gas block panel 36, at the lateral wall of cone, be provided with access hole 28.Described a plurality of cloth bag devices 32 all adopt high temperature resistant material, cloth bag device 32 is fixedly installed on dividing plate 22, dust outlet 27 is set in the bottom in dedusting chamber 23, and dust exports 27 belows and is provided with fine powder recycling can 13, and the sidewall of described outlet chamber 24 is provided with deduster gas outlet 26.
As shown in Figure 5, described fiber bag precipitator 12 is also connected with cloth bag pulsed dust-removing device, cloth bag pulsed dust-removing device comprises compressed air cylinder 33, a plurality of Venturi tube 35, pulse control instrument and a plurality of pulse valve 34, described a plurality of pulse valves 34 are arranged on a plurality of pipelines that are connected to compressed air cylinder and by pulse control instrument, are controlled respectively, a plurality of Venturi tubes 35 connect described a plurality of pipelines, and the gas outlet of a plurality of Venturi tubes 35 is connected respectively to the inside of described cloth bag device 32.And being also provided with pressure detecting module at fiber bag precipitator 12, described pressure detecting module is connected with pulse control instrument.In the process that dusty gas purifies by filter bag, along with the increase of time, the long-pending dust being attached on cloth bag device 32 is more and more, thereby the resistance of cloth bag device 32 is increased gradually, cause processing air quantity to reduce gradually, for normal work, control resistance within the specific limits, by pressure detecting module, detect the pressure in fiber bag precipitator, at this moment when pressure is raised to limited range, by pulse control instrument, send instruction and trigger in order each control valve unbalanced pulse valve, compressed air in gas bag is ejected in each corresponding cloth bag device 32 by each aperture Venturi tube 35 of injection tube, 32 moments of cloth bag device sharply expand, make the long-pending dust releasing that is attached to cloth bag device 32 surfaces, cloth bag device 32 is regenerated.
Operation principle of the present utility model is: the liquid chlorine in liquid chlorine storage tank 1 is input in chlorine liquid carburetor 3 and vaporizes to certain temperature through canned motor pump 2, chlorine gas regulates laggard fluidized-bed reactor 6 bottoms that enter by surge tank 4, directly reacts in fluidized-bed reactor 6 with the raw material silica flour from silica flour feeding device 5.Fluidized-bed reactor 6 outlet crude products are after one-level cyclonic separation 10 is separated with secondary cyclone 11, and the most of solid fine silica powder in gas crude product reclaims to enter in fluidized-bed reactor 6 and continues as raw material reaction.In gas crude product, a small amount of thinner silica flour enters fine powder recycling can 13 after reclaiming by sack cleaner 12.Sack cleaner 12 outlet products enter spray column 14, the SiCl of spray liquid for using through the condensed partial reflux of condenser 16
4crude product, spray column 14 bottoms are the high slag slurry storage tank 15 that boils of liquid.The SiCl of storage tank 17 for gathering
4crude product, can be used for further rectification and purification and uses.Condenser 16 unreacted is out chlorine gas mixture completely, generates the products such as clorox through caustic wash tower 18 with NaOH solution reaction, and product clorox enters storage tank 19 and collects, and other on-condensible gas is discharged through drain 20.
Claims (6)
1. a direct method is produced the fiber bag precipitator of silicon tetrachloride, this fiber bag precipitator (12) comprises shell body (21) and a plurality of cloth bag device (32), in shell body (21), be provided with dividing plate (22), dividing plate (22) is divided into dedusting chamber (23) and outlet chamber (24) by shell body (21), described cloth bag device (32) is fixedly installed on dividing plate (22), the top in dedusting chamber (23) is provided with deduster air inlet (25), dust outlet (27) is set in the bottom of dedusting chamber (23), dust outlet (27) below is provided with fine powder recycling can (13), the sidewall of described outlet chamber (24) is provided with deduster gas outlet (26), it is characterized in that: the lateral wall in dedusting chamber (23) is provided with heating jacket (29), and being provided with gas block panel (36) in the dedusting chamber, inner side (23) at deduster air inlet (25), described a plurality of cloth bag devices (32) all adopt high temperature resistant material.
2. a kind of direct method according to claim 1 is produced the fiber bag precipitator of silicon tetrachloride, it is characterized in that: in the dedusting chamber, inner side (23) of deduster air inlet (25), be provided with gas block panel (36).
3. a kind of direct method according to claim 1 is produced the fiber bag precipitator of silicon tetrachloride, it is characterized in that: fiber bag precipitator (12) is also connected with cloth bag pulsed dust-removing device, cloth bag pulsed dust-removing device comprises compressed air cylinder (33), a plurality of Venturi tubes (35), pulse control instrument and a plurality of pulse valve (34), described a plurality of pulse valves (34) are arranged on a plurality of pipelines that are connected to compressed air cylinder (33) and by pulse control instrument, are controlled respectively, a plurality of Venturi tubes (35) connect described a plurality of pipelines, the gas outlet of a plurality of Venturi tubes (35) is connected respectively to the inside of described cloth bag device (32).
4. a kind of direct method according to claim 3 is produced the fiber bag precipitator of silicon tetrachloride, it is characterized in that: fiber bag precipitator (12) is also provided with pressure detecting module, and described pressure detecting module is connected with pulse control instrument.
5. a kind of direct method according to claim 1 is produced the fiber bag precipitator of silicon tetrachloride, it is characterized in that: heating jacket (29) adopts heat-conducting oil heating, on the top of heating jacket (29), be provided with oil-in (30), bottom is provided with oil-out (31).
6. a kind of direct method according to claim 1 is produced the fiber bag precipitator of silicon tetrachloride, it is characterized in that: the top of dedusting chamber (23) is cylinder, and bottom is cone, at the lateral wall of cone, is provided with access hole (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699385.6U CN203507699U (en) | 2013-11-06 | 2013-11-06 | Cloth bag type dust collector for producing silicon tetrachloride by using direct method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699385.6U CN203507699U (en) | 2013-11-06 | 2013-11-06 | Cloth bag type dust collector for producing silicon tetrachloride by using direct method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203507699U true CN203507699U (en) | 2014-04-02 |
Family
ID=50366684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320699385.6U Expired - Lifetime CN203507699U (en) | 2013-11-06 | 2013-11-06 | Cloth bag type dust collector for producing silicon tetrachloride by using direct method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203507699U (en) |
-
2013
- 2013-11-06 CN CN201320699385.6U patent/CN203507699U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103449445B (en) | A kind of direct method produces the production equipment of silicon tetrachloride | |
| CN101279735A (en) | Production method and apparatus for trichlorosilane | |
| CN102234117B (en) | A kind of method for hydrolysis of the material containing hydrolyzable halogen atom | |
| CN103566669A (en) | Bag type dust collector for producing silicon tetrachloride by direct method | |
| CN101143723A (en) | Modified method and device for preparing trichlorosilane and multicrystal silicon | |
| CN102849745B (en) | Dust removal process and system for trichlorosilane production | |
| CN203529947U (en) | Silicon powder recovery device for producing silicon tetrachloride by adopting direct method | |
| CN203568858U (en) | Production system for synthesis of silicon tetrachloride | |
| CN101885473A (en) | Green and environment-friendly recycling method of trichlorosilane tail gas | |
| CN102936014B (en) | Method and device for producing disilane through reaction of alloyed composition and ammonium chloride in liquid ammonia | |
| CN105502491B (en) | The method that zircon sand fluidizing chlorination prepares ultrapure zirconium oxychloride by-produced tetrachlorosilane | |
| CN206535403U (en) | Chlorosilane analyzes waste gas recovery processing unit | |
| CN101125276A (en) | Method for recovering tail gas of trichlorosilane production | |
| CN105540660A (en) | Production device for preparing ultra-pure zirconium oxychloride byproduct silicon tetrachloride by fluidizing chlorination of zircon sand | |
| CN101239723A (en) | Plasma producing method and device for polycrystalline silicon | |
| CN103570025B (en) | A kind of direct method produces the silica powder recovering device of silicon tetrachloride | |
| CN103420382B (en) | A kind of synthetic method of silicon tetrachloride and production system thereof | |
| CN103553057B (en) | A kind of method utilizing reaction rectification technique process chlorosilane waste gas | |
| CN103449446B (en) | Method for preparing trichlorosilane | |
| CN203451228U (en) | Production device for producing silicon tetrachloride by virtue of direct method | |
| CN104229802A (en) | Preparation method of polycrystalline silicon | |
| CN202297154U (en) | Wet process dust removal device in trichlorosilane production | |
| CN203507699U (en) | Cloth bag type dust collector for producing silicon tetrachloride by using direct method | |
| CN103435045B (en) | A kind of distillation system of silicon tetrachloride crude product | |
| CN102219225A (en) | Device and method for recovering silicon dioxide after burning waste gas and waste liquid in polycrystalline silicon industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Guojing Inventor after: Fang Weimin Inventor after: Tan Jun Inventor after: Wang Jianyang Inventor after: Qiu Xianhui Inventor before: Fang Weimin Inventor before: Tan Jun Inventor before: Liu Guojing Inventor before: Wang Jianyang Inventor before: Qiu Xianhui Inventor before: Liu Chengguo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: FANG WEIMIN TAN JUN LIU GUOJING WANG JIANYANG QIU XIANHUI LIU CHENGGUO TO: LIU GUOJING FANG WEIMIN TAN JUN WANG JIANYANG QIU XIANHUI |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |