CN106288705A - Dry agitator, processing system and the processing method of silicon tetrachloride slag slurry in cold hydrogenation process - Google Patents

Dry agitator, processing system and the processing method of silicon tetrachloride slag slurry in cold hydrogenation process Download PDF

Info

Publication number
CN106288705A
CN106288705A CN201610685831.6A CN201610685831A CN106288705A CN 106288705 A CN106288705 A CN 106288705A CN 201610685831 A CN201610685831 A CN 201610685831A CN 106288705 A CN106288705 A CN 106288705A
Authority
CN
China
Prior art keywords
ribbon
filter
slurry
spiral
seal
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.)
Granted
Application number
CN201610685831.6A
Other languages
Chinese (zh)
Other versions
CN106288705B (en
Inventor
王建鑫
熊焰
吴兵
吴一兵
石安平
章新虎
乜生良
郭晓刚
辛钧启
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGXI SAIWEI LDK PHOTOVOLTAIC SILICON TECHNOLOGY Co Ltd
Original Assignee
JIANGXI SAIWEI LDK PHOTOVOLTAIC SILICON TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGXI SAIWEI LDK PHOTOVOLTAIC SILICON TECHNOLOGY Co Ltd filed Critical JIANGXI SAIWEI LDK PHOTOVOLTAIC SILICON TECHNOLOGY Co Ltd
Priority to CN201610685831.6A priority Critical patent/CN106288705B/en
Publication of CN106288705A publication Critical patent/CN106288705A/en
Application granted granted Critical
Publication of CN106288705B publication Critical patent/CN106288705B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04—Agitating, stirring, or scraping devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Silicon Compounds (AREA)

Abstract

The invention provides the dry agitator of silicon tetrachloride slag slurry in a kind of cold hydrogenation process, including housing, shaft, actuating device, housing encloses and sets formation drying chamber, and housing is provided with charging aperture and discharging opening；Shaft lies in a horizontal plane in drying chamber；Shaft includes spindle nose, hollow central siphon, and spindle nose is together with hollow axle sealing of tube, and hollow central siphon is provided with stirrer paddle, and the first ribbon and the second ribbon are fixed on hollow central siphon by support bar, and spiral around hollow central siphon；The hand of spiral on the left and right sides of the first ribbon and each comfortable hollow axle pipe of the second ribbon is contrary, and the first ribbon is contrary with the hand of spiral of described second ribbon；Under the rotation of shaft, the first ribbon makes slurry move to centre from both sides, and the second ribbon makes slurry move to both sides from centre.This dry agitator can make slurry formation circulate, stir evenly.Present invention also offers processing system and the processing method of silicon tetrachloride slag slurry.

Description

Dry agitator, processing system and the process of silicon tetrachloride slag slurry in cold hydrogenation process Method
Technical field
The present invention relates to technical field of polysilicon production, be specifically related to the dry of silicon tetrachloride slag slurry in a kind of cold hydrogenation process Dry agitator, processing system and processing method.
Background technology
Cold hydrogenation is to be converted into by a large amount of silicon tetrachloride as by-product (STC) reacting generation in reduction furnace in polycrystalline silicon production The process system of the raw material trichlorosilane (TCS) of synthesizing polysilicon；The raw material of this process system has silica flour, STC, hydrogen, HCl Deng, product is hydrogen, the mixture of STC and TCS, metal chloride and unreacted silica flour, the reactional equation related to Formula has Si+2H2+3SiCl4=4SiHCl3；Si+3HCl=SiHCl3+H2.This system by quencher by major part TCS, STC, The separation of the useful material such as hydrogen, (i.e. silicon tetrachloride slag slurry mainly includes silicon to the wet slurry after cold hydrogenation process system chilling Powder, metal chloride, liquid chlorosilane and hydrogen) drain into slurry drying device；Slurry drying device is for carrying out wet slurry Dry heat, is evaporated to reclaim by chlorosilane gas and hydrogen, and dried solid and alkali liquor are neutralized place Reason.
Existing drying device, there is problems in that during use that slurry is formed without circulating, and is dried stirred Journey can produce blind area, there is uneven phenomenon of being heated.Therefore, it is necessary to provide one four chlorinations be applicable to cold hydrogenation process The brand-new drying system of silicon slurry.
Summary of the invention
In view of this, the invention provides a kind of size circulations good fluidity, the dry agitator of stirring uniform drying, suitable The dry stirring of silicon tetrachloride slag slurry in cold hydrogenation process, present invention also offers the process system of a kind of silicon tetrachloride slag slurry System and processing method.
First aspect, the invention provides the dry agitator of silicon tetrachloride slag slurry in a kind of cold hydrogenation process, described dry Dry agitator includes that housing, shaft, actuating device, described housing enclose and sets formation drying chamber, the top of described housing and bottom It is respectively equipped with charging aperture and discharging opening；It is interior for driving at described actuating device that described shaft lies in a horizontal plane in described drying chamber Under Dong, the slurry in described drying chamber is stirred；Wherein, the two ends of described shaft are supported by bearing block, described stirring Axle includes spindle nose, hollow central siphon, stirrer paddle, support bar, the first ribbon and the second ribbon, described spindle nose and described hollow central siphon Welding together, described hollow central siphon is provided with stirrer paddle, and described first ribbon and the second ribbon are fixed on by support bar On described hollow central siphon, and spiral around described hollow central siphon；Described first ribbon comfortable institute each with described second ribbon State the hand of spiral on the left and right sides of hollow central siphon contrary, and the hand of spiral phase of described first ribbon and described second ribbon Instead；Under the rotation of described shaft, slurry is advanced by described first ribbon from the both sides of drying chamber to centre, described second spiral shell Slurry is advanced by band from the centre of described drying chamber to both sides.
Preferably, the sidewall of described housing is provided with end seat, and one end of described shaft passes end seat and the institute of described housing Stating actuating device to be connected, the other end of described shaft is connected with the other end seat of housing.
In the application, described first ribbon and the spiral shell on the left and right sides of the described second described hollow central siphon of each leisure of ribbon Revolve in opposite direction.Specifically, with the axis of symmetry of the vertical direction of described shaft as boundary, in the left side of described axis of symmetry, described The hand of spiral of the first ribbon is left-handed, and the hand of spiral of described second ribbon is dextrorotation；On the right side of described axis of symmetry, described The hand of spiral of the first ribbon is dextrorotation, and the hand of spiral of described second ribbon is left-handed.
Preferably, the radial distance of described first ribbon axis away from described shaft is more than described second ribbon away from described The radial distance of the axis of shaft.That is, described first ribbon is more than the axial projective area of described second ribbon；Described first The ribbon more described second ribbon of distance away from described dry agitator barrel is near.
Preferably, described first ribbon is identical with the pitch of described second ribbon.
Preferably, described first ribbon is the most contrary with the hand of spiral of described second ribbon, and described first ribbon does not has Being positioned at the periphery of described second ribbon, both weld in intersection.
Preferably, described support bar has synchronization Spiral distribution with described first ribbon, the second ribbon.
Preferably, described stirrer paddle is around described hollow central siphon screw arrangement.
Preferably, described dry agitator also includes that chuck, described chuck enclose the periphery being located at described housing, and with described Form a heating cavities between housing, in described heating cavities, be filled with conduction oil, described chuck is provided with and described heating sky The conduction oil entrance of chamber connection, conduction oil outlet.
Preferably, described conduction oil entrance is arranged at the chuck of described housing bottom, and the outlet of described conduction oil is arranged on At the chuck of described case top.
In the present invention, the housing of described dry agitator is provided with temperature sensor (preferably housing upper left quarter and Right lower quadrant is respectively provided with) temperature of material in monitoring housing, the present invention also sets up for monitoring heat conduction in dry run simultaneously The inlet temperature of oil and the temperature sensor of outlet temperature.
Preferably, the import oil temperature of described conduction oil is stable 120-125 DEG C (preferably becoming 125 DEG C).Described conduction oil leads to Cross transport pump, to realize the chuck internal circulation flow at dry agitator.
It is further preferred that described conduction oil can be T66 high temperature heat conductive oil or L-QD330 conduction oil.
It is further preferred that be additionally provided with heat-insulation layer on described housing, the material of described heat-insulation layer is rock wool.
The described dry agitator that first aspect present invention provides, drives the process of described shaft rotation at actuating device In, the shaft of horizontal positioned is conducive to stirring material up and down, then at oppositely oriented the first ribbon, the second ribbon Under cooperation, material defines in drying chamber and circulates, and stirring material, thoroughly without dead angle, makes to be dried material mix homogeneously, Wall the most easy to stick, is not easy to caking.Even it addition, there is the material that part is lumpd, the mistake that stirrer paddle can also move at slurry The material of part caking is smashed by journey, makes slurry more tiny.After loop ends to be dried, soliqueous material is Discharged by described discharging opening under the agitation of one ribbon.Described dry agitator can make silicon tetrachloride slag slurry in cold hydrogenation process Formation circulates, stirs uniform drying, in order to further technique application.
Preferably, it is additionally provided with shaft end seal assembly, institute between two ends spindle nose and the end seat of described housing of described shaft State shaft end seal assembly for seal the gap between described shaft and described housing.
Preferably, described shaft end seal assembly includes spiral sleeve, holds seat pad set, seal cartridge, close in seal cartridge Envelope labyrinth chamber, packing seal chamber, filler, liquid silicon tetrachloride sealing, nitrogen-sealed and gland, wherein, described helical axis Being set on shaft, described spiral sleeve is provided with external screw thread at the place of cooperation with described end seat；Described end seat pad set, sealing Lining is sequentially fixed on the medial wall of described end seat, lateral wall, and is all set on described spiral sleeve, described end seat pad Set, described seal cartridge all with described spiral sleeve matched in clearance；Described end seat pad put be provided with on described spiral sleeve The female thread that external screw thread is oppositely oriented, described seal cartridge was sequentially formed with between face from inside to outside with coordinating of described spiral sleeve Labyrinth seal chamber, packing seal chamber；Described packing seal intracavity is equipped with filler, and described gland is socketed in described spiral sleeve On, and be located by connecting to compress filler with the outer end of described seal cartridge；Institute's labyrinth seal intracavity is interval with multiple sealing Sheet, described spiral sleeve is additionally provided with the groove for assembling described diaphragm seal；Offer the most successively on described seal cartridge Silicon chloride. (STC) entrance, nitrogen inlet, for carrying STC to described labyrinth seal intracavity respectively, to described packing seal chamber Inside it is passed through nitrogen to form STC sealing, nitrogen-sealed respectively.
Preferably, described spiral sleeve and described shaft interference fits, described spiral sleeve is fixed by screws in institute State on shaft.
Preferably, the external screw thread on described end seat pad puts female thread and described spiral sleeve has between 0.2-0.6mm Gap.
It is further preferred that described external screw thread is trapezoidal bull external screw thread；Described female thread is trapezoidal multiple-internal screw thread.
Preferably, described diaphragm seal is vertically arranged in described labyrinth seal intracavity, and described diaphragm seal does not touches described labyrinth The cavity top of annular seal space, described diaphragm seal forms throttle clearance at described labyrinth seal intracavity and expands cavity.
It is further preferred that described diaphragm seal is ring packing sheet, described ring packing sheet is fixed on by snap ring In described groove.
Preferably, described filler be material be politef, being shaped as of described filler is square.
Preferably, in the side near described gland, described packing seal intracavity is additionally provided with packing press ring.
Preferably, described seal cartridge being welded with the first gas distribution and overlaps and the second gas distribution set, described sealing serves as a contrast Overlapping the first perforate put by described Silicon chloride. entrance with described first gas distribution to communicate, described seal cartridge passes through institute State nitrogen inlet to communicate with described second gas the second perforate of putting of distribution.
Preferably, described first gas distribution set and the distribution of the second gas put and are respectively welded the first flange seat and second Flange seat；Described first flange seat is used for being connected with Silicon chloride. (STC) pipeline by the first flange connecting pipe, described second flange Seat is for being connected with nitrogen pipeline by the second flange connecting pipe.
It is further preferred that described first gas distribution set, the second gas distribution set are for being welded on described seal cartridge circle The sleeve of circumferential direction.
It is highly preferred that described first flange connecting pipe is also connected with a nitrogen pipeline, in order to Silicon chloride. is passed through low pressure nitrogen Gas (0.4MPa) is delivered to described labyrinth seal intracavity.
In the application, described Silicon chloride. is sealed into and uses low-pressure nitrogen (0.4MPa) conveying tetrachloro to labyrinth seal intracavity SiClx.So being possible to prevent dried gas leakage, the described Silicon chloride. sealed can be by being positioned at described dry stirring Silicon chloride. storage tank supply outside device.Silicon chloride. conveying time (in Silicon chloride. storage tank, Silicon chloride. pipeline and the first method In blue adapter) it is liquid, when it arrives seal cartridge (labyrinth seal chamber), (it is dried agitator because temperature raises and has conduction oil Heating) and become gaseous state.Described nitrogen-sealed is respectively to packing seal intracavity input low-pressure nitrogen (0.4MPa), its objective is Prevent Silicon chloride. from sealing the most thorough.
As it was previously stated, the two ends of the spindle nose of described shaft are connected with the end seat of described housing respectively, part spindle nose passes Described housing.Wherein being cased with spiral sleeve on shaft, it is coordinating place with end seat, overlaps it with the end seat pad being fixed on end seat Between be matched in clearance, the screw thread that spiral sleeve puts with described end seat pad is contrary, and under the rotation of described shaft, material is in phase Eddy generation friction between anti-spiral, produces pressure and overcomes leakage, and the first constituting described dry agitator seals.Far On the direction of described shell ends seat, pass also have on the part shaft of described housing labyrinth seal, Silicon chloride. seal, Packing seal and nitrogen-sealed.Spiral sleeve forms band in the region being fixed with diaphragm seal with the seal cartridge being fixed on end seat The labyrinth seal chamber of labyrinth gap, can be effectively by slurry, and the air seal that produces in dry whipping process is here, resistance Only granule travels further into packing seal chamber, forms second and seals, and the STC being simultaneously connected with labyrinth seal chamber seals, defeated The STC that send enters cavity and relies on pressure can reduce the leakage of gas further, forms three seals, packing seal, and The nitrogen-sealed communicated therewith sequentially forms the four, the 5th roads and seals, when trace dust enters packing seal chamber with gas, and profit Can push back to them be dried in agitator with the sealing stop of filler, nitrogen purging.
Preferably, the top of described housing is additionally provided with a gas outlet.Described gas outlet is for connecting a filter, institute State filter filter for the gas that described slurry is produced in whipping process, purification.
In the present invention, the gas outlet at described dry agitator is additionally provided with a pressure transducer, is used for monitoring dry Pressure during dry.
Preferably, within the shell body temperature of described dry agitator differs 5 DEG C with described heat conduction oil outlet temperature (can be such as 0.2 DEG C, 0.5 DEG C, 1 DEG C, 2 DEG C, 3 DEG C or 4 DEG C), and the pressure in described dry agitator 0.1～ Time in the range of 0.5bar, complete an arid cycle.
During it is further preferred that complete an arid cycle, described shell body temperature differs 1-3 with conduction oil outlet temperature ℃.More preferably within difference 1 DEG C.
When completing an arid cycle, the pressure in described dry agitator can be in the range of 0.1-0.3bar, also Can be in the range of 0.2-0.4bar, it is also possible to be in the range of 0.2-0.45bar.It is further preferred that described being dried is stirred Mix the pressure in device in the range of 0.2～0.3bar.
Index in dry run is segmented by the present invention and quantifies, it is possible to achieve the regulation to arid cycle, can save The energy, lowering apparatus are lost.In one embodiment of the invention, described arid cycle is 4-7 hour, such as, can be 4,5,5.5 or 6 Hour.
The shaft end seal assembly of dry agitator described herein, its good sealing effect, reduces and is dried letting out of agitator Divulge a secret danger, can effectively extend the service life of described dry agitator.Even if dried material becomes containing inflammable, corrosivity etc. Part, it is not easy to security incident, environment will not be produced and pollute.
To sum up, the dry agitator that first aspect present invention provides, dried object material can be made to be formed and to circulate, be dried There is not stirring blind area in whipping process, stirring is heated more uniform；The good sealing effect of its dry agitator axle head black box, dry In dry agitator, the disclosure risk of material is little.
Second aspect, the invention provides the silicon tetrachloride slag slurry processing system in a kind of cold hydrogenation process, including being dried Agitator, filter, chlorosilane recycling can and washing bag.
Wherein, described dry agitator is provided by first aspect present invention, and described dry agitator is for cold hydrogenation The silicon tetrachloride slag slurry that technique produces carries out heating, stirring, and isolates chlorosilane gas and slurry solids.
Described filter is for filtering isolated described chlorosilane gas, and is taken out of by described chlorosilane gas Adsorbing powder dust on the filter bag of described filter, obtain chlorosilane clean gas, described filter be additionally operable to absorption filter Dust on bag is jetted, and makes described dust fall in described dry agitator.
Further, described filter includes that tank body, described tank body are arranged over end socket, is provided with card in described tank body, The inner chamber of tank body is divided into the toilet and filter chamber being distributed up and down by described card, and described card is provided with cage bone, described It is cased with filter bag on cage bone；The sidewall of described toilet is provided with the outlet of clean gas and nitrogen inlet, and the bottom of described tank body offers gas Body dust import, described filter chamber communicates with described fuel gas and dust import；Wherein, described filter also includes that pulse of nitrogen is jetted Device, and control the pulse control instrument of described pulse of nitrogen blowing device, described pulse of nitrogen blowing device includes that nitrogen enters Pipe, electromagnetic valve, multiple injection tube and nozzle；Described pulse of nitrogen blowing device is provided with multiple electromagnetic valve, each described electromagnetism Valve is for controlling the opening and closing of nitrogen in an injection tube, and described injection tube is connected to described nitrogen by the cylinder of described electromagnetic valve Inlet pipe, described injection tube is provided with multiple nozzle, and the mouthpiece of described nozzle is positioned at the surface of described filter pocket openings, described electromagnetism Valve electrically connects with described pulse control instrument.
The fuel gas and dust import of described filter is connected with the gas outlet of above-mentioned dry agitator.Dusty gas is from described Agitated dryer enters described filter；Dust under blowing off during described filter winding-up filter bag also falls to described dry stirring In device.
Preferably, described pulse of nitrogen blowing device also includes being arranged on the nitrogen heater outside described tank body, described Nitrogen inlet connects described nitrogen heater by described nitrogen inlet.
It is further preferred that described nitrogen is first heated to after preset temperature by described nitrogen heater jetting clearly Ash.Described preset temperature is preferably 90-130 DEG C.
Preferably, it is provided with flange between described end socket and described tank body.
Preferably, described electromagnetic valve is located on described end socket, the cylinder of one end of described injection tube and described electromagnetic valve it Between by described Flange joint.
Preferably, described filter bag is polyfluortetraethylefilm film coated filter bag.
Preferably, the aperture of described filter bag is 800-1200 mesh.
Preferably, the outlet of described clean gas is positioned on the sidewall of described toilet not homonymy with described nitrogen inlet.Described only Gas outlet, described nitrogen inlet are respectively positioned on the top of described cage bone.
Preferably, the distance of the described nitrogen inlet bottom away from described tank body exports the bottom away from tank body more than described clean gas Distance, the position of the most described nitrogen mouth higher than described clean gas export.
Preferably, the periphery of described tank body is also enclosed and is provided with chuck, and described chuck has heating cavities, the heating of described chuck Conduction oil it is filled with, for described filter is maintained uniform temperature in cavity.
Conduction oil entrance, the conduction oil outlet connected with described heating cavities it is provided with on described chuck.Preferably, described Chuck at end socket is provided with conduction oil outlet, and the chuck of described filter tank base is provided with heat conductive oil inlet.
Preferably, described toilet and described filter chamber are mounted on pressure transducer, for monitoring pressure in real time.
Preferably, described end socket also has dump mouth.
Preferably, described end socket also have water content detection mouth and gas composition detection mouth.
Isolated chlorosilane gas and slurry solids after the stirring of silicon tetrachloride slag slurry drying, wherein chlorosilane gas The dust carried secretly with removing can be filtered further by described filter, and by the purging of pulse of nitrogen blowing device by dust Return again to dry agitator, in washing bag, be neutralized process together with described slurry solids, make solid-state waste residue It is effectively addressed；And the clean gas after filtering can be condensed recoverys, enter back into re-using in cold hydrogenation process.Described The simple in construction of filter, runs pressure drop and is 800Pa, good filtration effect to the maximum, filter bag purges effect also preferable, filter bag Change infrequently, within about 180 days, change once.
Described chlorosilane recycling can, is used for reclaiming described chlorosilane clean gas, and condenses the steam into chlorosilane liquid produced, institute State chlorosilane liquid produced and recycle for being delivered in cold hydrogenation process.Described chlorosilane recycling can and described filter Clean gas outlet connects.
Described washing bag is for carrying out described slurry solids and the described dust falling into dry agitator by alkali liquor Hydrolysis neutralizes reaction, and is discharged by reacted for this neutralization solidliquid mixture.
Preferably, also including transporting tank, described transhipment tank is connected with the discharging opening of described dry agitator, described transhipment tank Receive described slurry solids, and employ nitrogen as and for carrier, described slurry solids is transported in washing bag.
Preferably, the top of described chlorosilane recycling can has a condenser, and described condenser is clean by described chlorosilane Gas is condensed into chlorosilane liquid produced, and condensed chlorosilane liquid produced flow in recycling can；The bottom of described chlorosilane recycling can is also Having a delivery pump, described delivery pump is for being delivered to described chlorosilane liquid produced in the quencher in cold hydrogenation process.
Silicon tetrachloride slag slurry processing system in the cold hydrogenation process that second aspect present invention provides, can be by Silicon chloride. Slurry sufficiently circulates, and efficiently separates and obtains chlorosilane gas and slurry solids, and chlorosilane gas can be entered One step filters the dust carried secretly with removing, and is returned again to dry agitator by dust by impulse blowing, together with described slag Slurry solids is neutralized process together in washing bag, makes solid-state waste residue be effectively addressed；And the clean gas after filtering Can be condensed recovery, enters back in cold hydrogenation process and re-uses.Described processing system can effectively solve silicon tetrachloride slag The emission problem of slurry, saves the energy, protection environment.
The third aspect, the invention provides the silicon tetrachloride slag slurry processing method in a kind of cold hydrogenation process, including following Step:
(1) silicon tetrachloride slag slurry produced by cold hydrogenation process imports and is dried agitator, right in described dry agitator Described silicon tetrachloride slag slurry carries out heating, stirring, and isolates chlorosilane gas and slurry solids, wherein, described dry stirring Device is provided by first aspect present invention；
(2), in described chlorosilane gas enters the filter of described dry whip topping, described filter is to described chlorine Silane gas filters, and the dust that described chlorosilane gas is taken out of is attracted on the filter bag of described filter, obtains chlorine silicon Alkane clean gas, under the winding-up of described filter, the absorption described dust on filter bag falls in described dry agitator；
(3) described chlorosilane clean gas enters the chlorosilane recycling can being connected with described filter, and is condensed into Chlorosilane liquid produced, described chlorosilane liquid produced is used for being delivered in cold hydrogenation process recycle；
(4) described slurry solids and the described dust falling into dry agitator are expelled in washing bag, wash described Washing in bag, described slurry solids and described dust are hydrolyzed with alkali liquor and neutralize reaction, and by reacted for this neutralization solid-liquid Mixture is discharged.
Preferably, described slurry solids and the described dust falling into dry agitator are first expelled in a transhipment tank, institute Stating transhipment tank to be connected with the discharging opening of described dry agitator, described transhipment tank employs nitrogen as described slurry solid as carrier Thing and described dust are transported in washing bag.
Preferably, the top of described chlorosilane recycling can has a condenser, and described condenser is clean by described chlorosilane Gas is condensed into chlorosilane liquid produced, and condensed chlorosilane liquid produced flow in recycling can；The bottom of described chlorosilane recycling can is also Having a delivery pump, described delivery pump is for being delivered to described chlorosilane liquid produced in the quencher in cold hydrogenation process.
Silicon tetrachloride slag slurry processing method in the cold hydrogenation process that third aspect present invention provides, technological process is simple, Energy consumption is low, high to the response rate of useful material.
Beneficial effects of the present invention includes the following aspects:
1, be dried the shaft of horizontal positioned in agitator be provided with the first oppositely oriented ribbon of ad hoc structure, second Ribbon, can make silicon tetrachloride slag slurry formation circulate, do not glue wall, not lump, stir uniform drying；
2, the good sealing effect of the shaft end seal assembly of agitator it is dried, it is possible to reduce be dried the disclosure risk of agitator, Can effectively extend the service life of described dry agitator；
3, the simple in construction of the filter being connected with dry agitator, separates after stirring silicon tetrachloride slag slurry drying The filter effect of the chlorosilane gas arrived is preferable, and the pulse of nitrogen blowing device in described filter is to the purging effect of filter bag also Preferably, the replacing of filter bag is infrequently；
4, all use heat-conducting oil heating in being dried the chuck of agitator and filter, heat without dead band, flow velocity height, heat transfer effect Fruit is high, safety is high；
5, the processing system of described silicon tetrachloride slag slurry can effectively solve the emission problem of silicon tetrachloride slag slurry, saves energy Source, protection environment；The processing method of described silicon tetrachloride slag slurry, technological process is simple, and energy consumption is low, the response rate to useful material High.
Accompanying drawing explanation
Fig. 1 is the structural representation being dried agitator in the embodiment of the present invention；
Fig. 2 is the structural representation of shaft in the embodiment of the present invention；
Fig. 3 is first ribbon distribution schematic diagram on shaft in the embodiment of the present invention；
Fig. 4 is second ribbon distribution schematic diagram on shaft in the embodiment of the present invention；
Fig. 5 is the schematic diagram of the race way that shaft is formed in stirring in the embodiment of the present invention；
Fig. 6 is to be dried the running part of agitator, bearing block part, the structural representation of axle shaft end seal part in Fig. 1；
Fig. 7 is the structure for amplifying schematic diagram of axle head black box in Fig. 1；
Fig. 8 is the schematic diagram of spiral sleeve in Fig. 7；
Fig. 9 is the schematic diagram of Fig. 7 middle-end seat pad set；
Figure 10 is the enlarged diagram in the labyrinth seal chamber in Fig. 7 on seal cartridge；
Figure 11 is the schematic diagram of seal cartridge in Fig. 7；
Figure 12 is the structural representation of filter in the embodiment of the present invention；
Figure 13 is that in the embodiment of the present invention, the electromagnetic valve of filter is not powered on closure state (A) and energising opening (B) Schematic diagram；
Figure 14 is the top view of the end socket of filter in the embodiment of the present invention；
Figure 15 is the structural representation of silicon tetrachloride slag slurry processing system in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is carried out clearly Chu, it is fully described by.
See also Fig. 1-Figure 11, for silicon tetrachloride slag in the cold hydrogenation process of one that the preferred embodiment of the present invention provides The structural representation of the dry agitator 100 of slurry.
Described dry agitator 100 includes housing 1, shaft 2, actuating device 3 (label not shown in Fig. 1), described shell Body 1 encloses and sets formation drying chamber, and the top of described housing 1 and bottom are respectively equipped with charging aperture 11 and discharging opening 12, as preferably, and institute State discharging opening 12 and be positioned at the center bottom described housing 1.It is interior for described that described shaft 2 lies in a horizontal plane in described drying chamber Under the driving of actuating device 3, the slurry in described drying chamber is stirred.The two ends, left and right of described shaft 2 are by bearing block 5 support, and described bearing block 5 is rotation and the support being realized shaft two ends by bearing and bearing.
As in figure 2 it is shown, described shaft 2 includes spindle nose 21, hollow central siphon 22, stirrer paddle 23, support bar the 24, first spiral shell Band 25 and the second ribbon 26, described spindle nose 21 welds together with described hollow central siphon 22, and described hollow central siphon 22 is provided with and stirs Mixing blade 23, described first ribbon 25 and the second ribbon 26 are fixed on described hollow central siphon 22 by support bar 24, and spiral Around described hollow central siphon 22；Described first ribbon 25 hand of spiral phase on the left and right sides of described hollow central siphon 22 Instead, contrary with described second ribbon 26 hand of spiral on the left and right sides of described hollow central siphon 22, and described first ribbon 25 is contrary with the hand of spiral of described second ribbon 26；Under the rotation of described shaft 2, described first ribbon 25 by slurry from The both sides of drying chamber advance to centre, and slurry is advanced by described second ribbon 26 from the centre of described drying chamber to both sides.
Described first ribbon 25 and the spiral on the left and right sides of the described second described hollow central siphon 22 of each leisure of ribbon 26 In opposite direction.Specifically, as shown in Figure 3 and Figure 4, with the axis of symmetry (dotted line in Fig. 2) of the vertical direction of described shaft 2 it is Boundary, in the left side of described axis of symmetry, the hand of spiral of described first ribbon 25 is left-handed, the hand of spiral of described second ribbon 26 For dextrorotation；On the right side of described axis of symmetry, the hand of spiral of described first ribbon 25 is dextrorotation, the spiral of described second ribbon 26 Direction is left-handed.
In the application, the first ribbon 25 that hollow central siphon 22 left and right sides is oppositely oriented, equal rotation direction shaft 2 center, will Slurry is simultaneously from the two of drying chamber lateral middle propellings；The second ribbon 26 that hollow central siphon 22 the right and left is oppositely oriented, will slurry Material advances from the centre of described drying chamber to both sides；Due to the first ribbon 25 and second ribbon 26 spiral on hollow central siphon 22 In opposite direction, the direction that the first ribbon 25 promotes slurry to move with the second ribbon 26 is different, it is simple to feed liquid is sufficiently mixed.
As shown in Figure 3 and Figure 4, the radial distance D1 of described first ribbon 25 axis away from described shaft 2 is more than described The radial distance D2 of second ribbon 26 axis away from described shaft 2.That is, diameter (the axis projection face of described first ribbon 25 Long-pending) more than the diameter (axial projective area) of described second ribbon 26；Described first ribbon 25 is away from 100, described dry agitator More described second ribbon 26 of distance of wall is near.It is understood that first ribbon the 25, second ribbon 26 all with described dry stirring The barrel of device 100 has a certain distance.
In present embodiment, pitch L1 of described first ribbon 25 is identical with pitch L2 of described second ribbon 26.
In the application, described first ribbon 25 is identical with the pitch of described second ribbon 26, and both is oppositely oriented, axially Projected area is unequal.Described first ribbon 25 with described second ribbon 26 all around described hollow central siphon 22, but described first Ribbon 25 is not located at the periphery of described second ribbon 26, and both weld in intersection.
Described first ribbon the 25, second ribbon 26 is all to be become helix shape by band-like steel band bending.The embodiment of the present invention In, described stirrer paddle 23 is welded on described hollow central siphon 22.Described first ribbon the 25, second ribbon 26 is all by propping up Strut 24 is connected on hollow central siphon 22.
In present embodiment, described support bar 24 has synchronization spiral with described first ribbon the 25, second ribbon 26 and divides Cloth.So described first ribbon the 25, second ribbon 26 can be played more preferable supporting role.
In an embodiment of the present invention, described stirrer paddle 23 is around described hollow central siphon 22 screw arrangement.
Described dry agitator 100 also includes that chuck 4, described chuck 4 enclose the periphery being located at described housing 1, and with described Form a heating cavities between housing 1, be filled with conduction oil in described heating cavities, described chuck 4 is provided with and described heating The conduction oil entrance 13 of cavity connection, conduction oil outlet 14.
As preferably, conduction oil entrance 13 is arranged on the bottom of described housing 1, and described conduction oil outlet 14 is arranged on described The top of housing 1.
In the application, wet slurry silicon tetrachloride slag slurry under the stirring of dry agitator 100 with the conduction oil in chuck 4 Indirectly carrying out heat exchange and be evaporated by the chlorosilane gas in wet slurry, heating is without short circuit, dead band, and flow velocity is high, heat transfer Efficiency is high, can isolate chlorosilane gas and slurry solids.Relative to use steam as adding thermal medium for, described in lead The heat transfer efficiency of deep fat is high, and the safety of conduction oil is good, and inertia is low, will not react with chlorosilane, and the temperature of conduction oil Constant, it is simple to manipulation.
In the present invention, the housing of described dry agitator is provided with temperature sensor (preferably housing upper left quarter and Right lower quadrant is respectively provided with) temperature of material in monitoring housing, the present invention also sets up for monitoring heat conduction in dry run simultaneously The inlet temperature of oil and the temperature sensor of outlet temperature.
Preferably, the import oil temperature of described conduction oil is stable 120-125 DEG C (preferably becoming 125 DEG C).Described conduction oil leads to Cross transport pump, to realize the chuck internal circulation flow at dry agitator.
In embodiments of the present invention, described conduction oil can be T66 high temperature heat conductive oil or L-QD330 conduction oil.
In an embodiment of the present invention, outside described housing 1, it is additionally provided with heat-insulation layer (not shown).Described chuck 4 can be reduced The volatilization of interior conduction oil, the material of described heat-insulation layer can be rock wool.Round dot on Fig. 1 middle shell 1 is to be welded on cylinder Small cylinder, the small cylinder of these projections is for the ease of being coated on housing by heat-insulation layer.
Wherein, the sidewall of described housing is provided with end seat 16, and one end of described spindle nose 21 is through the end seat on described housing 1 It is connected with described actuating device 3 after 16.
In an embodiment of the present invention, described actuating device 3 is arranged on the sidewall of described housing 1.Described actuating device 3 It is connected with described shaft 2, sends power to shaft 2, to drive described shaft 2 to rotate, and then in drying chamber Material be stirred, it is simple to the material in drying chamber is fully dried.
Further, described actuating device 3 includes motor 31, shaft coupling 32, decelerator 33, minor sprocket 34, big sprocket wheel 35. Described motor 31 is connected transmission by shaft coupling 32, decelerator 33, minor sprocket 34, big sprocket wheel 35 with described shaft 2.
The carrying out practically of this dry agitator 100 is as follows, and energising rear motor 31 rotates, and drives to slow down by shaft coupling 32 Device 33, decelerator 33 realizes the reduction of rotating speed, and decelerator 33 is connected by axle with minor sprocket (drive sprocket) 34.Minor sprocket 34 leads to Crossing chain (not shown) and drive to big sprocket wheel (by movable sprocket) 35 (rotating ratio of large and small sprocket wheel is 1:3), big sprocket wheel 35 passes through again Round end flat key connects drive shaft 2 and rotates.
When being ready for stirring, conduction oil is passed through in the chuck 4 of dry agitator 100, is dried agitator 100 and starts Heat up, after temperature reaches the temperature of technological requirement, wet slurry is joined in drying chamber by charging aperture 11, at shaft 2 Under rotation, wet slurry constantly circulates in drying chamber, and the conduction oil being passed into chuck 4 heats indirectly, simultaneously at ribbon and Being sufficiently mixed under the stirring of stirrer paddle 23, dried solid residue is expelled to washing bag from the discharging opening 12 in the middle of drying machine Processing, the gas evaporated in wet slurry the gas outlet from dry agitator 100 can enter filter, and it is single to arrive recovery Unit is recovered.
In an embodiment of the present invention, described dry agitator 100 also includes frame 6, described housing 1 and described transmission Device 3 is installed in described frame 6.Described frame 6 is in order to fixing and support housing 1, motor 31, shaft coupling 32, decelerator 33 parts such as grade, described frame 6 can be by channel-section steel, the steel structure platform of angle steel welding.
In the application, during actuating device 3 drives described shaft 2 to rotate, the shaft 2 of horizontal positioned is favourable In being stirred up and down by material, then under the cooperation of first oppositely oriented ribbon the 25, second ribbon 26, material is at drying chamber Inside defining and circulate, stirring material, thoroughly without dead angle, makes to be dried material mix homogeneously, wall the most easy to stick, is not easy to caking, Also it is greatly shortened arid cycle (feed, be dried stirring, discharging) simultaneously.Even it addition, having the material that part is lumpd, stirring paddle The material of part caking can also be smashed during slurry moves by leaf 23, makes slurry more tiny.To be dried follow After ring terminates, soliqueous material is discharged by described discharging opening 12 under the agitation of the first ribbon 25.
Additionally, the application uses the shaft shown in Fig. 2 slurry can be formed 4 race ways (such as Fig. 5), because of This, the dry agitator that the present invention provides is more full and uniform to the stirring of slurry, stirring efficiency is higher.Slurry can also be saved be dried After the discharge time.
In an embodiment of the present invention, between two ends spindle nose 21 and the end seat 16 of described housing 1 of described shaft 2 also Being provided with shaft end seal assembly 200, described shaft end seal assembly 200 is for seal between described shaft 2 and described housing 1 Gap.It is understood that described stirring shaft drive 3, bearing block 5 and shaft end seal assembly 200 are at described shaft 2 On be disjunct unitary part (if Fig. 6, Fig. 6 are the enlarged drawings on the left of Fig. 1 middle shell).Fig. 1 is dried the shell of agitator 100 All there are bearing block 5 and shaft end seal assembly 200 in the body left and right sides, simply the left side is not carried out section view, it is seen that simply appearance； The right is carried out section view, it can be seen that internal structure.
Please also refer to Fig. 7-Figure 11, described shaft end seal assembly 200 includes spiral sleeve 211, depends on described end seat 16 The end seat pad set 212 of secondary connection, seal cartridge 213, labyrinth chamber in seal cartridge 213 seals 214, packing seal chamber 215, fill out Material 216, gland 217, liquid silicon tetrachloride (STC) seal and nitrogen-sealed.
Described spiral sleeve 211 is set on the spindle nose of described shaft 2.Preferably, described spiral sleeve 211 is with described Shaft 2 interference fits, described spiral sleeve 211 is fixed by screws on described shaft 2.Described helixseal set 211 It is provided with external screw thread 230 at the place of cooperation with described end seat 16.It is additionally provided with for assembling diaphragm seal 218 on described spiral sleeve 211 Groove 219 (seeing Fig. 8).
Described end seat pad set axle sleeve 212 is fixedly mounted on the medial wall of described end seat 16, outside successively with seal cartridge 213 On wall, described end seat pad set 212, described seal cartridge 213 are all set on described spiral sleeve 211.
Described end seat pad set 212 and described spiral sleeve 211 matched in clearance, described end seat pad set 212 is provided with described The female thread 231 (seeing Fig. 9) that external screw thread 230 on spiral sleeve is oppositely oriented.As preferably, described external screw thread 230 is ladder Shape bull external screw thread；Described female thread 231 is trapezoidal multiple-internal screw thread.Produced by the multiple thread of trapezoidal cross-section, pressure head is relatively Height, and the pressure head that trapezoidal multiple thread produces is less with gap change.
Female thread 231 on described end seat pad set 212 has 0.2-0.6mm with the external screw thread 230 on described spiral sleeve 211 Gap.Under the rotation of described shaft 2, the material between spiral sleeve 211 and end seat pad set 212 is between contrary spiral Eddy generation rubs, and produces pressure head to overcome the leakage rate of material.The rotating speed of shaft is the highest, and amount of leakage is the fewest.
Described seal cartridge 213 and described spiral sleeve 211 matched in clearance, described seal cartridge 213 and described helical axis Labyrinth seal chamber 214, packing seal chamber 215 it is sequentially formed with from inside to outside between the cooperation face of set 211.
It is understood that labyrinth seal chamber 214, the formation in packing seal chamber 215, it is owing to seal cartridge 213 is in phase Answer position to be provided with groove, when it is mutually sheathed with spiral sleeve 211, be the formation of this 2 cavitys.
Refer to Figure 10, in institute's labyrinth seal chamber 214, be interval with multiple diaphragm seal 218, on described spiral sleeve 211 also It is provided with the groove 219 for assembling described diaphragm seal 218.
It is further preferred that described diaphragm seal 218 is ring packing sheet, described ring packing sheet 218 passes through snap ring In 220 grooves 219 being fixed on described spiral sleeve 211.
In the application, in labyrinth seal chamber 214, it is interval with multiple diaphragm seal 218.Diaphragm seal 218 can be vertical or with Vertical direction is arranged in labyrinth seal chamber 214 at an angle.As preferably, described diaphragm seal 218 is vertically arranged in institute Stating in labyrinth seal chamber 214, described diaphragm seal 218 does not touches the cavity top in described labyrinth seal chamber 214.So, described close Mounting 218 forms throttle clearance in described labyrinth seal chamber 214 and expands cavity.Wherein, described throttle clearance refers to seal Space between the cavity top in sheet 218 and described labyrinth seal chamber 214, described expansion cavity, refer to sealed medium and exist Space after throttle clearance, between arrived adjacent seals sheet 218.Sealed medium (a small amount of slurry and slurry agitation mistake The gas produced in journey) labyrinth seal chamber may be arrived by the gap between spiral sleeve and end seat pad overlap.They to pass Labyrinth seal chamber will in Figure 10 the route shown in arrow, having many bends or curves general like labyrinth.Sealed medium is passing through Produce throttle effect and reach to stop the purpose of leakage during gap in tortuous labyrinth seal chamber 214.
Described packing seal chamber 215 is socketed in described spiral sleeve 211 built with filler 216, described gland 217 On, and be located by connecting to compress filler 216 with the outer end of described seal cartridge 213.
In an embodiment of the present invention, described filler 216 is politef for material, the shape of described filler 216 For square.
In an embodiment of the present invention, in the side near described gland 217, in described packing seal chamber 215 It is additionally provided with packing press ring 221.
Silicon chloride. (STC) entrance, nitrogen inlet is offered the most successively, for described on described seal cartridge 213 Conveying STC in labyrinth seal chamber 214, be passed through in described packing seal chamber 215 nitrogen to form STC respectively and seal, nitrogen close Envelope.
Refer to Figure 11 (filler in not shown packing cavity 215, the diaphragm seal in labyrinth seal chamber 214 and card on figure Ring), described seal cartridge 213 is welded with the first gas distribution set 222 and the second gas distribution set 223, described first gas Distribution set 222 is provided with the first perforate 224, and described second gas distribution set 223 is provided with the second perforate 225.Described seal cartridge 213 Being communicated with the first perforate 224 on described first gas distribution set 222 by described liquid silicon tetrachloride entrance, described sealing serves as a contrast Set 213 is communicated with the second perforate 225 on described second gas distribution set 223 by described nitrogen inlet.As preferably, seal Lining 213 be provided with 4-6 equally distributed nitrogen inlet, Silicon chloride. entrance with respectively with the first gas distribution set 222 and Second gas distribution set 223 phases communicate.The number of the first perforate 224 on the first gas distribution set 222 can be 1 or many Individual, preferably 4-6.The number of the second perforate 225 on the second gas distribution set 223 can also be one or more, is preferably 4-6.
It is respectively welded the first flange seat 226 and the on described first gas distribution set 222 and the second gas distribution set 223 Two flange seats 227；Described first flange seat 226 is used for being connected with Silicon chloride. (STC) pipeline by the first flange connecting pipe 228, Described second flange seat 227 is for being connected with nitrogen pipeline by the second flange connecting pipe 229.As a example by nitrogen-sealed, seal and use Nitrogen pass sequentially through the second flange connecting pipe (nitrogen flange connecting pipe) 229 to the second gas on nitrogen pipeline, the second flange seat 227 Body distribution set 223, then entered in packing seal chamber 215 by described nitrogen inlet.Seal nitrogen and enter cavity dependence pressure, can To prevent sealed medium (gas produced during slurry agitation) leakage.
In an embodiment of the present invention, described first gas distribution set the 222, second gas distribution set 223 is for being welded on The sleeve of described seal cartridge 213 circumferencial direction.
Described first flange connecting pipe 228 is also connected with a nitrogen pipeline, in order to Silicon chloride. is passed through low-pressure nitrogen (0.4MPa) it is delivered in described labyrinth seal chamber 214.
In the application, described Silicon chloride. is sealed in labyrinth seal chamber 214 employing low-pressure nitrogen (preferably 0.4MPa) conveying Silicon chloride..So it is possible to prevent dried gas leakage.The described Silicon chloride. sealed can be by position Supply in the Silicon chloride. storage tank outside described dry agitator 100.Silicon chloride. conveying time (Silicon chloride. storage tank, four In silicon chloride pipeline and the first flange connecting pipe) it is liquid, when it arrives seal cartridge (labyrinth seal chamber), because temperature raises (be dried agitator have heat-conducting oil heating) and become gaseous state.In another embodiment of the application, it is also possible to will here Silicon chloride. in labyrinth seal chamber 214 seals and changes nitrogen-sealed into.
Described nitrogen-sealed is respectively and inputs low-pressure nitrogen (preferably 0.4MPa), its purpose in packing seal chamber 215 It is to prevent the sealing of described Silicon chloride. the most thorough.
The two ends spindle nose 21 of shaft 2 described herein end seat 16 with described housing 1 respectively is connected, part spindle nose 21 Pass described housing.Wherein, shaft 2 being cased with spiral sleeve 211, it is coordinating place with end seat 16, holds seat 16 with being fixed on On end seat pad set 212 between be matched in clearance, the screw thread that spiral sleeve 211 and described end seat pad overlap on 212 is contrary, described Under the rotation of shaft, the slurry eddy generation friction between spiral sleeve 211 and end seat pad set 212, produce pressure to overcome Leakage rate, the first constituting described dry agitator 100 seals.On the direction away from described shell ends seat 16, pass institute State and also there is on the part shaft of housing 1 labyrinth seal 214, Silicon chloride. sealing, packing seal 215 and nitrogen-sealed.Spiral shell Spin axis set 211 forms band labyrinth gap in the region being fixed with diaphragm seal 218 with the seal cartridge 213 being fixed on end seat 16 Labyrinth seal chamber 214, can be effectively by slurry, and the air seal produced in dry whipping process is here, stop granule Traveling further into packing seal chamber 215, form second and seal, the STC being simultaneously connected with labyrinth seal chamber 214 seals, its Rely on pressure-feed STC to enter cavity and can reduce the leakage of gas further, form three seals, packing seal chamber 215 and interior filler 216, and the nitrogen-sealed connected with packing seal chamber 215 sequentially forms the four, the 5th roads and seals, when When trace dust enters packing seal chamber 215 with gas, the sealing stop of filler, nitrogen purging is utilized they to be pushed back to It is dried in agitator 100.
The shaft end seal assembly 200 of dry agitator 100 described herein, its good sealing effect, it is possible to reduce be dried The disclosure risk of agitator 100, can effectively extend the service life of described dry agitator 100.Even if dried material contains There are the compositions such as inflammable, corrosivity, are not easy to security incident, environment will not be produced and pollute.
The top of described housing 1 is additionally provided with a gas outlet 15.Described gas outlet 15 is used for connecting a filter 700, The gas that described filter 700 can be used for producing silicon tetrachloride slag slurry in whipping process filters, purification, in order to mistake Gas after filter carry out further with.
In the present invention, at the gas outlet 15 of described dry agitator, it is additionally provided with a pressure transducer, is used for monitoring Pressure in dry run.
Preferably, within the shell body temperature of described dry agitator differs 5 DEG C with described heat conduction oil outlet temperature, And the pressure in described dry agitator in the range of 0.1～0.5bar time, complete an arid cycle.
It is further preferred that when the shell body temperature of described dry agitator differs 1 with described heat conduction oil outlet temperature Within DEG C, and the pressure in described dry agitator in the range of 0.2～0.3bar time, complete an arid cycle.The present invention In in dry run index segment quantify, it is possible to achieve the regulation to arid cycle, can save the energy, lowering apparatus damage Consumption.
See also Figure 12-Figure 14, for the structural representation of a kind of filter 700 that the preferred embodiment of the present invention provides Figure.Described filter 700 includes that tank body 71, described tank body 71 are arranged over end socket 72, is provided with card 73 in described tank body, described The inner chamber of tank body 71 is divided into upper and lower two parts by card 73, and top is toilet, and bottom is filter chamber, and described card 73 is pacified Equipped with cage bone 74, described cage bone 74 is cased with filter bag 75；The sidewall of described toilet is provided with clean gas outlet 711 and nitrogen inlet 712, the bottom of described tank body 71 offers fuel gas and dust import 713, described filter chamber and described fuel gas and dust import 713 phase Logical；Wherein, described filter 700 also includes pulse of nitrogen blowing device, and controls the arteries and veins of described pulse of nitrogen blowing device Rushing controller, described pulse of nitrogen blowing device includes nitrogen inlet 80, electromagnetic valve 81, multiple injection tube 82 and nozzle 83；Institute Stating pulse of nitrogen blowing device and be provided with multiple electromagnetic valve 81, each described electromagnetic valve 81 is for controlling nitrogen in an injection tube 82 The opening and closing of gas, described injection tube 82 is connected to described nitrogen inlet 80, described injection tube 82 by the cylinder of described electromagnetic valve 81 Being provided with multiple nozzle 83, the mouthpiece of described nozzle 83 is positioned at the surface of described filter bag 75 opening, described electromagnetic valve 81 and institute State pulse control instrument electrical connection.
Described fuel gas and dust import 713 is connected with the gas outlet 15 of above-mentioned dry agitator 100.Dusty gas is from described Agitated dryer 100 enters described filter 700；Described filter 700 jet filter bag time blow off under dust also fall to institute State in dry agitator 100.
In an embodiment of the present invention, described pulse of nitrogen blowing device also includes being arranged on the nitrogen outside described tank body 71 Hot-air heater, described nitrogen inlet 80 connects described nitrogen heater by described nitrogen inlet 712.
It is understood that described pulse of nitrogen blowing device is connected with compressed nitrogen source of the gas.The nitrogen of winding-up is by institute State compressed nitrogen source of the gas to provide.
It is further preferred that described nitrogen is first heated to after design temperature by described nitrogen heater jetting clearly Ash.Described preset temperature is preferably 90-130 DEG C.So it is possible to prevent during winding-up metal chloride, chlorosilane etc. is cold Coagulate, in order to avoid the effect of impact winding-up filter bag.
It is provided with flange 70 between described end socket 72 and described tank body 71.In an embodiment of the application, described end socket 72 more preferably ball crown types, the middle part of described tank body 71 is cylindric.
Described electromagnetic valve 81 is located on described end socket, between one end and the cylinder of described electromagnetic valve 81 of described injection tube 82 Connected by described flange 76.
Seeing Figure 13, in figure A, B, the rightmost side is the enlarged drawing of the spool 813 of electromagnetic valve.Electromagnetic valve 81 described herein Also having a cylinder 811, the cylinder 811 of described electromagnetic valve 81 welds together with the end socket 72 on filter, and shape is integral, The cylinder 811 of electromagnetic valve 81 is connected on described flange 70；The valve head of electromagnetic valve 81 is fixed by screws on cylinder.Work as electromagnetism When valve 81 is not powered on, flexible sheet 812 and the nitrogen inlet 80 of the spool 813 of electromagnetic valve 81 are in closure state, and nitrogen enters Nitrogen in pipe 80 is only in the outside of electromagnetic valve 81 cylinder, and nitrogen is introduced into the injection tube 82 being connected with the cylinder of electromagnetic valve 81 Interior (A in Figure 13)；When electromagnetic valve 81 energising is opened, the flexible sheet 812 of electromagnetic valve 81 moves up under magneticaction, nitrogen Gas just enters in the injection tube 82 connected with electromagnetic valve 81 (B in Figure 13).
In the application, the cylinder of described electromagnetic valve 81 is connected with described nitrogen inlet 80.Preferably, described electromagnetic valve 81 Cylinder be that two rows are crisscross arranged, the cylinder of preferably 2 electromagnetic valves 81 is directly connected with described nitrogen inlet duct 80, residue The cylinder of electromagnetic valve 81 is realized and the connection of nitrogen inlet 80 indirectly by the cylinder of these 2 electromagnetic valves 81 again.
In an embodiment of the present invention, described injection tube 82, the number of electromagnetic valve 81 are 4, in an injection tube 82 Can extend multiple nozzle 83, the mouthpiece of described nozzle 83 is the most just to filter bag 75 opening.
In the application, described card 73 is uniformly distributed porose, cage bone 74 is installed in hole, by screw by described cage bone 74 are fixed on card 73, and cage bone 74 is cased with filter bag 75.
In an embodiment of the present invention, described filter bag 75 is polyfluortetraethylefilm film coated filter bag.The friction system of politef Number is low, chemical stability good, energy is high temperature resistant, smooth surface, makes filter pressure greatly reduce, the table of polyfluortetraethylefilm film coated filter bag Face is easily cleared up, and makes the substantially continuous operation of filtration.Additionally, the intensity of politef is higher, last a long time.
In an embodiment of the present invention, the aperture of described filter bag 75 is 800-1200 mesh.
In an embodiment of the present invention, described clean gas outlet 711 is positioned at described toilet not with described nitrogen inlet 712 On the sidewall of homonymy.Described clean gas outlet 711, described nitrogen inlet 712 are respectively positioned on the top of described cage bone 74.
In an embodiment of the present invention, the distance of the described nitrogen inlet 711 bottom away from described tank body 71 more than described only The distance of gas outlet 712 bottoms away from tank body 71, the position of the most described nitrogen mouth 711 exports 412 higher than described clean gas.
The periphery of described tank body 71 is also enclosed and is provided with chuck 76, and described chuck 76 has heating cavities, adding of described chuck 76 It is filled with conduction oil in hot cavity, for described filter 700 is maintained uniform temperature (about 100 DEG C, 100-120 DEG C), with Prevent the material (metal chloride, chlorosilane etc.) entering filter 700 from condensing out, produce crystal, block filter, shadow Ring filter effect.The heat transfer efficiency of described conduction oil is high, and the safety of conduction oil is good, and inertia is low, and the temperature of conduction oil Constant, it is simple to manipulation.
Conduction oil entrance 714, the conduction oil outlet 715 connected with described heating cavities it is provided with on described chuck 76.Excellent Selection of land, the chuck bottom described tank body 71 is provided with heat conductive oil inlet 714, and the chuck at described end socket 72 is provided with conduction oil and goes out Mouth 715.
Described toilet and described filter chamber are mounted on pressure transducer, for monitoring pressure in real time.
In the application, described pulse control instrument is the pulse generator controlling electromagnetic valve 81 action.Pulse control instrument electricity consumption Cable is connected on PLC (programmable logic controller (PLC)).Described electromagnetic valve 81 is preferably by cable and described pulse control instrument phase Connect.
Described fuel gas and dust import 713 is dried agitator with one and is connected.Dusty gas enters institute from described agitated dryer State filter；Dust under blowing off during described filter winding-up filter bag also falls in described dry agitator.
Filtration condition: dust-laden chlorosilane gas after fuel gas and dust import 713 enters in the tank body 71 of filter 700, A part relatively coarse granule dirt, under the effect of primary settling and self gravitation, is settled down to be connected with described fuel gas and dust import 713 In the dry agitator connect.After thinner dust enters filter chamber, under the effect of filter bag both sides pressure reduction, by Blang's diffusion and The combined effects such as sieving, are attracted on filter bag 75 surface, and purified gas enters toilet, via clean gas through filter bag 75 Outlet 711 discharge, separation efficiency can reach >=99.9%.
Jetting deashing state: along with filtering constantly carrying out of operating mode, the long-pending dust being attached on filter bag 75 surface will constantly increase Adding, the operation pressure drop of this filter 700 increases, and filtration resistance is continuously increased, and for making described filter 700 normally work, needs Dust stratification on filter bag 75 is periodically removed.When the toilet of this equipment and the pressure drop of filter chamber reach setting value, close Clean gas outlet, regulates and controls described pulse control instrument to start pulse of nitrogen blowing device, and electromagnetic valve 81 is opened, and nitrogen passes through described nitrogen Hot-air heater is heated to preset temperature (such as about 100 DEG C), enters into described mistake via nitrogen inlet 712 from nitrogen inlet 80 In the tank body 71 of filter 700, the nozzle 83 that hot nitrogen connects from corresponding each injection tube 82 under the control of each electromagnetic valve 81 sprays It is blown to filter bag 75, makes the long-pending all dust being attached on filter bag 75 surface drop, and fall back again via described fuel gas and dust import 713 In dry agitator, filter bag 75 can put back into.Dropping back the dust of dry agitator can be together with dry stirring The slurry solids obtained after device stirring is discharged together.
Seeing Figure 14, described end socket 72 also has dump mouth 721, described dump mouth 721 connects safety Valve.When clean gas outlet 711 blocking or causing gas to discharge because of other, by fuel gas and dust import 713 and described filtration The described dry agitator that device 700 is connected constantly evaporates gaseous chlorine silane, will cause described filter 700 superpressure, when described After filter 400 superpressure, by the pressure release of described dump mouth 721, the gas in described filter 700 is drained into dump System, so that pressure is in certain limit in system.
Also there is on described end socket 72 water content detection mouth 722 and gas composition detection mouth 723.More perfect filter Function, makes that cold hydrogenation process system is more environmentally friendly, safety.
The chlorosilane gas of isolated and slurry solids, described filter after the stirring of silicon tetrachloride slag slurry drying Chlorosilane gas can be filtered the dust carried secretly with removing, and blowing by pulse of nitrogen blowing device by 700 further Sweep and dust returned again to dry agitator 100, in washing bag, be neutralized process together with described slurry solids, Solid-state waste residue is made to be effectively addressed；And the clean gas after filtering can be condensed recoverys, enter back in cold hydrogenation process heavily New utilization.The simple in construction of described filter 700, runs pressure drop and is 800Pa, good filtration effect to the maximum, imitate the purging of filter bag Fruit also preferable, filter bag is changed infrequently, within about 180 days, changes once.
Present invention also offers the silicon tetrachloride slag slurry processing system in a kind of cold hydrogenation process, its structural representation such as figure Shown in 15, described silicon tetrachloride slag slurry processing system includes being dried agitator 100, filter 700, chlorosilane recycling can 400 He Washing bag 600.
Wherein, described dry agitator 100 is as shown in the above-mentioned arbitrary figure of Fig. 1-Figure 11, and it is for producing cold hydrogenation process Silicon tetrachloride slag slurry carry out heating, stirring, isolate chlorosilane gas and slurry solids.
Described filter 700 as shown in the above-mentioned arbitrary figure of Figure 12-Figure 14, the fuel gas and dust import 713 of described filter 700 Being connected with the gas outlet 15 of described dry agitator 100, described filter 700 has pulse of nitrogen blowing device；Described mistake Filter 700 is for filtering isolated described chlorosilane gas, and the adsorbing powder dust taken out of by described chlorosilane gas On the filter bag 75 of described filter 700, obtaining chlorosilane clean gas, described pulse of nitrogen blowing device is for existing to absorption Dust on filter bag 75 is jetted, and makes described dust fall in described dry agitator 100.
Described chlorosilane recycling can 400 exports 711 with the clean gas of described filter 700 and is connected, described chlorosilane recycling can 400 are used for reclaiming described chlorosilane clean gas, and condense the steam into chlorosilane liquid produced, and described chlorosilane liquid produced is used for being delivered to Cold hydrogenation process recycles.
Described washing bag 600 is used for by alkali liquor described slurry solids and the described powder falling into dry agitator 100 Dirt is hydrolyzed and neutralizes reaction, and is discharged by reacted for this neutralization solidliquid mixture.
Wherein, silicon tetrachloride slag slurry processing system also includes transporting tank 500, described transhipment tank 500 and described dry stirring The discharging opening 12 of device 100 connects, and described transhipment tank 500 receives described slurry solids, and employs nitrogen as described as carrier Slurry solids is transported in washing bag 600.It is understood that described transhipment tank is provided with charging aperture and discharge gate, described The discharging opening of transhipment tank is connected with the outlet of described washing bag, the charging aperture of described transhipment tank and the discharging of described dry agitator Mouth is connected.
In an embodiment of the present invention, the top of described chlorosilane recycling can 400 has a condenser, described condenser Described chlorosilane clean gas is condensed into chlorosilane liquid produced, and condensed chlorosilane liquid produced flow in recycling can；Described chlorine silicon The bottom of alkane recycling can also has a delivery pump, and described delivery pump is for being delivered to described chlorosilane liquid produced in cold hydrogenation process Quencher in.
In the application, in described washing bag 600, the hydrolysis that carries out neutralizes reaction, for the common knowledge of this area, in institute The chemical reaction occurred in stating washing bag 600 has:
SiCl4+2H2O→SiO2+4HCl；
SiHCl3+3H2O→SiO2+H2O+3HCl+H2；
NaOH+SiO2+H2O→Na2SiO3·nH2O。
Silicon tetrachloride slag slurry processing system in the cold hydrogenation process that second aspect present invention provides, can be by Silicon chloride. Slurry sufficiently circulates, and efficiently separates and obtains chlorosilane gas and slurry solids, and chlorosilane gas can be entered One step filters the dust carried secretly with removing, and is returned again to dry agitator by dust by impulse blowing, together with described slag Slurry solids is neutralized process together in washing bag, makes solid-state waste residue be effectively addressed；And the clean gas after filtering Can be condensed recovery, enters back in cold hydrogenation process and re-uses.Described processing system effectively solves silicon tetrachloride slag slurry Emission problem, has saved the energy, has accomplished environmental protection.
Present invention also offers the silicon tetrachloride slag slurry processing method in cold hydrogenation process, comprise the following steps:
(1) silicon tetrachloride slag slurry produced by cold hydrogenation process imports the dry stirring described in the above-mentioned arbitrary figure of Fig. 1-Figure 11 In device 100, in described dry agitator 100, described silicon tetrachloride slag slurry is heated, stirs, isolate chlorosilane gas With slurry solids；
(2) described chlorosilane gas enters described dry agitator 100 by the gas outlet 15 of described dry agitator In the filter 700 at top, described filter 700 is as shown in the above-mentioned arbitrary figure of Figure 12-Figure 14, but is not limited to this；Described filtration Described chlorosilane gas is filtered by device 700, and the dust that described chlorosilane gas is taken out of is attracted to described filter 700 On filter bag 75, obtain chlorosilane clean gas, under the winding-up of the pulse of nitrogen blowing device of described filter 700, adsorb Described dust on filter bag 75 falls in described dry agitator 100；
(3) described chlorosilane clean gas enters and goes out 711 mouthfuls of chlorosilanes recovery being connected with the clean gas of described filter 700 Tank 400, and in chlorosilane recycling can 400, it is condensed into chlorosilane liquid produced, described chlorosilane liquid produced is used for being delivered to cold hydrogenation Technique recycles；
(4) described slurry solids and the described dust falling into dry agitator 100 are expelled in washing bag 600, In described washing bag 600, described slurry solids and described dust are hydrolyzed with alkali liquor and neutralize reaction, and this neutralization are reacted After solidliquid mixture discharge.
Preferably, within the shell body temperature of described dry agitator differs 5 DEG C with described heat conduction oil outlet temperature, And the pressure in described dry agitator in the range of 0.1～0.5bar time, complete an arid cycle.
It is further preferred that when the shell body temperature of described dry agitator differs 1 with described heat conduction oil outlet temperature Within DEG C, and the pressure in described dry agitator in the range of 0.2～0.3bar time, complete an arid cycle.The present invention In in dry run index segment quantify, it is possible to achieve the regulation to arid cycle, can save the energy, lowering apparatus damage Consumption.
In one embodiment of the invention, described arid cycle is 5-7 hour.Specifically: described silicon tetrachloride slag slurry (wet pulp Material) enter the pressure about 0.5bar after being dried agitator, heat-conducting oil heating in the chuck of drying agitator 100, operative liquid Slurry gradually flashes to chlorosilane gas, the pressure being now dried in agitator 100 be increased to 1～2bar (preferably become 1～ 1.5bar), the time of pressure buildup phase is 1～2 hour；The gas evaporated enters filter 700, by filter top Filter bag after, export 711 entrance chlorosilane recycling cans 400 via the clean gas of filter, chlorosilane recycling can 400 is by its pressure Regulation valve makes whole silicon tetrachloride slag slurry processing system (refer mainly to be dried agitator 100, filter 700, chlorosilane recycling can 400) pressure is maintained at below 2bar, as pressure-regulating valve lost efficacy then by the relief valve pressure release of drying machine filter top. After liquid slurry all flashes to gas, the pressure in described dry agitator drops to about 0.7bar (0.6-0.7bar), Being slowly declined to 0.2～0.3bar from 0.7bar again, the time in this stage is 4～5 hours, and so far, described dry agitator is complete Become an arid cycle.
In the embodiment of the present invention, described slurry solids and the described dust falling into dry agitator are first expelled to transport tank In 500, described transhipment tank 500 is connected with the discharging opening of described dry agitator 100, described transhipment tank 500 employ nitrogen as into Described slurry solids and described dust are transported in washing bag 600 by carrier.
The top of described chlorosilane recycling can has a condenser, and described chlorosilane clean gas is condensed by described condenser Becoming chlorosilane liquid produced, condensed chlorosilane liquid produced flow in recycling can；It is defeated that the bottom of described chlorosilane recycling can also has one Sending pump, described delivery pump is for being delivered to described chlorosilane liquid produced in the quencher in cold hydrogenation process.
Silicon tetrachloride slag slurry processing method in the cold hydrogenation process that third aspect present invention provides, technological process is simple, Energy consumption is low, high to the response rate of useful material.
The above is the preferred embodiment of the present invention, but can not therefore be interpreted as the scope of the claims of the present invention Limit.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, also Can make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (10)

1. the dry agitator of silicon tetrachloride slag slurry in a cold hydrogenation process, it is characterised in that described dry agitator includes Housing, shaft, actuating device, described housing encloses and sets formation drying chamber, and top and the bottom of described housing are respectively equipped with charging Mouth and discharging opening；Described shaft is done described in lying in a horizontal plane in described drying chamber under the driving at described actuating device The slurry of dry intracavity is stirred；Wherein, the two ends of described shaft by bearing block support, described shaft include spindle nose, Hollow central siphon, stirrer paddle, support bar, the first ribbon and the second ribbon, described spindle nose together with described hollow axle sealing of tube, Described hollow central siphon is provided with stirrer paddle, described first ribbon and the second ribbon and is fixed on described hollow central siphon by support bar On, and spiral around described hollow central siphon；Described first ribbon and the described second described hollow central siphon of each leisure of ribbon The hand of spiral on the left and right sides is contrary, and described first ribbon is contrary with the hand of spiral of described second ribbon；Stir described Mix under the rotation of axle, described first ribbon by slurry from the both sides of drying chamber to centre advance, described second ribbon by slurry from The centre of described drying chamber advances to both sides.
2. dry agitator as claimed in claim 1, it is characterised in that described first ribbon and the described second each leisure of ribbon The hand of spiral on the left and right sides of described hollow central siphon is contrary, particularly as follows:
With the axis of symmetry of the vertical direction of described hollow central siphon as boundary, in the left side of described axis of symmetry, the spiral shell of described first ribbon Rotation direction is left-handed, and the hand of spiral of described second ribbon is dextrorotation；On the right side of described axis of symmetry, the spiral shell of described first ribbon Rotation direction is dextrorotation, and the hand of spiral of described second ribbon is left-handed.
3. dry agitator as claimed in claim 1, it is characterised in that described first ribbon axis away from described shaft Radial distance is more than the radial distance of described second ribbon axis away from described shaft；Described first ribbon and described second spiral shell The pitch of band is identical.
4. dry agitator as claimed in claim 1, it is characterised in that described dry agitator also includes chuck, described folder Set encloses the periphery being located at described housing, and and described housing between form a heating cavities, be filled with heat conduction in described heating cavities Oil, described chuck is provided with conduction oil entrance, the conduction oil outlet connected with described heating cavities.
5. dry agitator as claimed in claim 1, it is characterised in that the two ends spindle nose of described shaft and described housing Being additionally provided with shaft end seal assembly between end seat, described shaft end seal assembly includes spiral sleeve, holds seat pad set, seal cartridge, close Sealing labyrinth chamber in envelope lining, packing seal chamber, filler, liquid silicon tetrachloride sealing, nitrogen-sealed and gland, its In, described spiral sleeve is set on shaft, and described spiral sleeve is provided with external screw thread at the place of cooperation with described end seat；Described End seat pad set, seal cartridge are sequentially fixed on the medial wall of described end seat, lateral wall, and are all set in described spiral sleeve On, described end seat pad set, described seal cartridge all with described spiral sleeve matched in clearance；Described end seat pad puts and is provided with described The female thread that external screw thread on spiral sleeve is oppositely oriented, described seal cartridge coordinates between face by introversion with described spiral sleeve It is sequentially formed with outward labyrinth seal chamber, packing seal chamber；Described packing seal intracavity is equipped with filler, and described gland is socketed in On described spiral sleeve, and it is located by connecting to compress filler with the outer end of described seal cartridge；Institute's labyrinth seal intracavity interval It is provided with multiple diaphragm seal, described spiral sleeve is additionally provided with the groove for assembling described diaphragm seal；Divide on described seal cartridge Offer Silicon chloride. entrance, nitrogen inlet the most successively, for carrying Silicon chloride. to described labyrinth seal intracavity respectively, to institute State packing seal intracavity and be passed through nitrogen to form Silicon chloride. sealing, nitrogen-sealed respectively.
6. dry agitator as claimed in claim 5, it is characterised in that described diaphragm seal is vertically arranged in described labyrinth seal Intracavity, described diaphragm seal does not touches the cavity top in described labyrinth seal chamber, and described diaphragm seal is in described labyrinth seal intracavity shape Become throttle clearance and expand cavity.
7. dry agitator as claimed in claim 5, it is characterised in that the female thread that described end seat pad puts and described spiral External screw thread on axle sleeve has the gap of 0.2-0.6mm；Described external screw thread is trapezoidal bull external screw thread；Described female thread is trapezoidal many Head female thread.
8. the silicon tetrachloride slag slurry processing system in a cold hydrogenation process, it is characterised in that include as claim 1-7 is arbitrary Dry agitator described in Xiang, filter, chlorosilane recycling can and washing bag.
9. processing system as claimed in claim 8, it is characterised in that described filter includes tank body, sets above described tank body Having end socket, be provided with card in described tank body, the inner chamber of tank body is divided into the toilet and filter chamber being distributed up and down by described card, Cage bone is installed on described card, described cage bone is cased with filter bag；The sidewall of described toilet is provided with the outlet of clean gas and nitrogen enters Mouthful, the bottom of described tank body offers fuel gas and dust import, and described filter chamber communicates with described fuel gas and dust import；Wherein, institute State filter and also include pulse of nitrogen blowing device, and control the pulse control instrument of described pulse of nitrogen blowing device, described Pulse of nitrogen blowing device includes nitrogen inlet, electromagnetic valve, multiple injection tube and nozzle；Described pulse of nitrogen blowing device is installed Having multiple electromagnetic valve, each described electromagnetic valve is for controlling the opening and closing of nitrogen in an injection tube, and described injection tube is by described The cylinder of electromagnetic valve is connected to described nitrogen inlet, and described injection tube is provided with multiple nozzle, and the mouthpiece of described nozzle is positioned at institute Stating the surface of filter pocket openings, described electromagnetic valve electrically connects with described pulse control instrument.
10. the silicon tetrachloride slag slurry processing method in a cold hydrogenation process, it is characterised in that including:
(1) silicon tetrachloride slag slurry produced by cold hydrogenation process imports the dry agitator as described in any one of claim 1-7 In, in described dry agitator, described silicon tetrachloride slag slurry is heated, stirs, isolate chlorosilane gas and slurry is solid Body thing；
(2), in described chlorosilane gas enters the filter of described dry whip topping, described filter is to described chlorosilane Gas filters, and the dust that described chlorosilane gas is taken out of is attracted on the filter bag of described filter, obtains chlorosilane clean Clean gas, under the winding-up of described filter, the absorption described dust on filter bag falls in described dry agitator；
(3) described chlorosilane clean gas enters the chlorosilane recycling can being connected with described filter, and is condensed into chlorine silicon Alkane liquid, described chlorosilane liquid produced is used for being delivered in cold hydrogenation process recycle；
(4) described slurry solids and the described dust falling into dry agitator are expelled in washing bag, wrap in described washing In, described slurry solids and described dust are hydrolyzed with alkali liquor and neutralize reaction, and are mixed by reacted for this neutralization solid-liquid Thing is discharged.
CN201610685831.6A 2016-08-18 2016-08-18 Drying blender, processing system and processing method for silicon tetrachloride slag slurry Expired - Fee Related CN106288705B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610685831.6A CN106288705B (en) 2016-08-18 2016-08-18 Drying blender, processing system and processing method for silicon tetrachloride slag slurry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610685831.6A CN106288705B (en) 2016-08-18 2016-08-18 Drying blender, processing system and processing method for silicon tetrachloride slag slurry

Publications (2)

Publication Number Publication Date
CN106288705A true CN106288705A (en) 2017-01-04
CN106288705B CN106288705B (en) 2019-07-23

Family

ID=57678555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610685831.6A Expired - Fee Related CN106288705B (en) 2016-08-18 2016-08-18 Drying blender, processing system and processing method for silicon tetrachloride slag slurry

Country Status (1)

Country Link
CN (1) CN106288705B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107971328A (en) * 2017-12-28 2018-05-01 宁波宝力农环境技术开发有限公司 Low Temperature Thermal hydrolytic decomposition pot
CN109499660A (en) * 2019-01-02 2019-03-22 江西赛维Ldk光伏硅科技有限公司 A kind of silicon rod is broken and screening mechanism, crusher
CN109612237A (en) * 2018-11-30 2019-04-12 徐州力源纤维素科技有限公司 The dryer being heated evenly
CN110057176A (en) * 2019-04-30 2019-07-26 浙江安尚电气有限公司 A kind of safe Saw-dust drier
CN110534006A (en) * 2018-07-25 2019-12-03 中国科学院沈阳自动化研究所 A kind of fire-fighting simulated training system for harmful influence tank car
CN110577398A (en) * 2019-10-16 2019-12-17 新疆协鑫新能源材料科技有限公司 Polycrystalline silicon slag slurry innocent treatment system
CN112856974A (en) * 2019-09-22 2021-05-28 佳木斯大学 Hot-blast high temperature drying device of medicine of circulation convection formula that contains tail-hood

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003117370A (en) * 2001-10-19 2003-04-22 Yuji Osuga Mixing and stirring drier and production method of compost using the same
CN1704436A (en) * 2004-05-31 2005-12-07 华东理工大学 Process for continuous solid phase grafting preparation of polyolefin and device therefor
CN2898740Y (en) * 2005-11-25 2007-05-09 查晓峰 Spiral belt rake vacuum drier
FR2930175A1 (en) * 2008-04-21 2009-10-23 Saur Soc Par Actions Simplifie Tool useful in installation for treating recovery material comprising sludge or wastes, comprises a rotating frame moved along a layer of material, and a rotating part supported by the frame for advancing the material by shifting the tool
CN202511586U (en) * 2012-02-29 2012-10-31 潍坊鸿德钢结构有限公司 Rotary tillage type quick drying machine
CN203525016U (en) * 2013-10-25 2014-04-09 象山医疗精密仪器有限公司 Dynamic sterilizing and drying machine
CN203608546U (en) * 2013-08-29 2014-05-28 华南农业大学 Fertilizer feed device
CN203824230U (en) * 2014-05-08 2014-09-10 孙甫兴 Fluidized-bed-type stirring drying machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003117370A (en) * 2001-10-19 2003-04-22 Yuji Osuga Mixing and stirring drier and production method of compost using the same
CN1704436A (en) * 2004-05-31 2005-12-07 华东理工大学 Process for continuous solid phase grafting preparation of polyolefin and device therefor
CN2898740Y (en) * 2005-11-25 2007-05-09 查晓峰 Spiral belt rake vacuum drier
FR2930175A1 (en) * 2008-04-21 2009-10-23 Saur Soc Par Actions Simplifie Tool useful in installation for treating recovery material comprising sludge or wastes, comprises a rotating frame moved along a layer of material, and a rotating part supported by the frame for advancing the material by shifting the tool
CN202511586U (en) * 2012-02-29 2012-10-31 潍坊鸿德钢结构有限公司 Rotary tillage type quick drying machine
CN203608546U (en) * 2013-08-29 2014-05-28 华南农业大学 Fertilizer feed device
CN203525016U (en) * 2013-10-25 2014-04-09 象山医疗精密仪器有限公司 Dynamic sterilizing and drying machine
CN203824230U (en) * 2014-05-08 2014-09-10 孙甫兴 Fluidized-bed-type stirring drying machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107971328A (en) * 2017-12-28 2018-05-01 宁波宝力农环境技术开发有限公司 Low Temperature Thermal hydrolytic decomposition pot
CN110534006A (en) * 2018-07-25 2019-12-03 中国科学院沈阳自动化研究所 A kind of fire-fighting simulated training system for harmful influence tank car
CN109612237A (en) * 2018-11-30 2019-04-12 徐州力源纤维素科技有限公司 The dryer being heated evenly
CN109499660A (en) * 2019-01-02 2019-03-22 江西赛维Ldk光伏硅科技有限公司 A kind of silicon rod is broken and screening mechanism, crusher
CN110057176A (en) * 2019-04-30 2019-07-26 浙江安尚电气有限公司 A kind of safe Saw-dust drier
CN112856974A (en) * 2019-09-22 2021-05-28 佳木斯大学 Hot-blast high temperature drying device of medicine of circulation convection formula that contains tail-hood
CN112856973A (en) * 2019-09-22 2021-05-28 佳木斯大学 Circulation convection type medicine hot air high-temperature drying device with grid structure
CN112856973B (en) * 2019-09-22 2022-09-27 佳木斯大学 Circulation convection type medicine hot air high-temperature drying device with grid structure
CN112856974B (en) * 2019-09-22 2022-09-27 佳木斯大学 Hot-blast high temperature drying device of medicine of circulation convection formula that contains tail-hood
CN110577398A (en) * 2019-10-16 2019-12-17 新疆协鑫新能源材料科技有限公司 Polycrystalline silicon slag slurry innocent treatment system
CN110577398B (en) * 2019-10-16 2024-05-14 新疆协鑫新能源材料科技有限公司 Polycrystalline silicon slag slurry innocent treatment system

Also Published As

Publication number Publication date
CN106288705B (en) 2019-07-23

Similar Documents

Publication Publication Date Title
CN106288705B (en) Drying blender, processing system and processing method for silicon tetrachloride slag slurry
CN103771428B (en) Silica gel aerogel powder manufactures system and manufacture method
CN101780956B (en) Method and device for preparing high purity polysilicon particles by using fluid bed reactor
CN104211030B (en) The method of follow-on rotary kiln large-scale production phosphoric acid
CN105797543B (en) A kind of processing unit of technique of trichlorosilane synthetic tail gas
CN101125654A (en) Large-scale fluidized bed reactor used for trichlorosilane production
CN103591780B (en) The main drying of the continuous drying system of slurry or powder
CN103058288A (en) Process and equipment for preparing nickel oxide product and recovering hydrochloric acid through nickel chloride solution
CN104888480B (en) Exsiccator
CN104896893B (en) A kind of continous way horizontal spiral tapered sleeve rotary dryer
CN104071793B (en) The recovery method of polysilicon cold hydrogenation solid slag charge slurry
CN102100998A (en) Method and device for processing trichlorosilane synthesis tail gas
CN102009953A (en) Method for recycling byproduct during production of polycrystalline silicon
CN1039593C (en) Calcining system and technique for fluidized bed-mobile bed mixed reactor
CN206188406U (en) A device for handling polycrystalline silicon by -product sediment thick liquid
CN205435740U (en) A heatable reation kettle for chemical industry industry
CN106219556B (en) It is a kind of using rice hull ash as the technique and device of raw material low temperature preparation gas-phase silica and active carbon
CN112742185B (en) Flue gas desulfurization reactor, flue gas treatment system and process method
CN201144198Y (en) Dry acetylene generator
CN105060297B (en) A kind of method and device for producing silicochloroform
CN209254564U (en) A kind of cooling and Waste Heat Recovery System of organosilicon production
CN206069401U (en) The device of calcium chloride is prepared in the waste water of self-contained calcium chloride
CN205965320U (en) Filter
CN209771799U (en) Comprehensive recycling system for PVC (polyvinyl chloride) waste alkali and gas burning kiln waste gas
CN108975275A (en) It is a kind of to prepare hydrogen fluoride reaction device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190723

Termination date: 20200818