CN205495095U - Automatic back flush filter of chlorosilane auxiliary type - Google Patents
Automatic back flush filter of chlorosilane auxiliary type Download PDFInfo
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- CN205495095U CN205495095U CN201620297726.0U CN201620297726U CN205495095U CN 205495095 U CN205495095 U CN 205495095U CN 201620297726 U CN201620297726 U CN 201620297726U CN 205495095 U CN205495095 U CN 205495095U
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Abstract
The utility model discloses an automatic back flush filter of chlorosilane auxiliary type, this automatic back flush filter of chlorosilane auxiliary type include one or more parallelly connected set up strain a section of thick bamboo, the upper end of straining a section of thick bamboo is provided with the feed inlet and arranges the cinder notch, the upper end of straining a section of thick bamboo is provided with the discharge gate and supplies the recoil medium to let in the recoil mouth that washes the filter core with being used for, be provided with feeding control valve, discharge control valve, row's sediment control valve and recoil control valve on feed inlet, discharge gate, row's cinder notch and the backwashing port respectively, it still is provided with first pressure regulating mouth on the section of thick bamboo to strain, first pressure regulating mouth passes through the pipeline and is connected with an unloading, safety exit, first pressure regulating mouth department is provided with first relief valve, has the automatic function of washing and step down, has solved the interior too big problem of pressure of filter blockage and filter.
Description
Technical field
This utility model relates to chlorosilane purification technique field, particularly to a kind of chlorosilane assist type automatic backwashing filter.
Background technology
Whole world polysilicon the most inevitably produces chlorosilane slurry material and (mainly contains the solid metal impurity such as silica flour, Cu, Fe, Al, Ca at present, other component is the materials such as liquid silicon tetrachloride, trichlorosilane, high-boiling components and metal chloride, wherein solids mass content is 0.5 ~ 35%, solid particle size is in 0.3 μm ~ 500 μm, chlorosilane liquid produced mass content 65 ~ 99.5%).For the process of slurry waste material, existing main processing method has burning dry process and hydrolysis wet treatment.Burning dry process uses auxiliary fuel to burn, and consumes big energy, and simultaneity factor produces silicon dioxide and results in blockage, and the chlorine subsequent treatment of generation is complicated, causes environmental pollution.Hydrolysis wet treatment then needs to consume substantial amounts of lime water, and in hydrolytic process, quick-fried and emptying Ignition Phenomena, equipment fluctuation of service are dodged in existence, use the cycle short, and fault rate is high.Regardless of whether be to burn or hydrolysis, the most all produce substantial amounts of waste residue and waste water, the most unfriendly to environment while causing a large amount of material waste.
As to apply for notification number be CN204689645U, Shen Qing Publication day is on June 2nd, 2015 Chinese patent discloses the defecator of a kind of chlorosilane residual liquid, this defecator includes one or more filter being arranged in parallel, each filter is provided with chlorosilane residual liquid entrance, chlorosilane residual liquid obtains solid slag and filtrate by after each filter, and the bottom of filter is provided with solid slag outlet, the top of filter is provided with filtrate outlet.Although chlorosilane slurry material being processed by filtering technique in that patent, overcoming and burning dry process and the many disadvantages of hydrolysis wet treatment.But, partial impurities can be by gravity sedimentation to bottom in filter process for this defecator, but inevitably have some solid particle residual adsorption on filter element, form accumulation, entrance (14) filter element that purges steam blocks, do not simply fail to process high solids content material, cause filter element to need duration to change, and owing to filter element blocking can cause pressure in filter to increase, cause potential safety hazard.
Utility model content
The purpose of this utility model is to provide a kind of chlorosilane assist type automatic backwashing filter, which solves the problem that filter element blocks and in filter, pressure is excessive.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of chlorosilane assist type automatic backwashing filter, including one or more filter cylinders being arranged in parallel, the upper end of described filter cylinder is provided with charging aperture and slag-drip opening, and the upper end of described filter cylinder is provided with discharging opening and for being passed through the recoil mouth of filter cartridge flushing for backflushing medium；Inlet control valve, discharging control valve, slagging coutrol valve and recoil control valve it is respectively arranged with on described charging aperture, discharging opening, slag-drip opening and backwash mouth；Being additionally provided with the first pressure modulating opening on described filter cylinder, described first pressure modulating opening is connected by pipeline and an emptying, extra exit, is provided with the first relief valve at described first pressure modulating opening.
Using said structure, when filtering, chlorosilane slurry material discharging opening from top after the lower section of filter cylinder passes into filtration is derived；Along with the aggregation retained on filter element increases, the differential pressure between import and export material house steward is gradually increased, and when this differential pressure reaches a certain setting value, filter enters backwash duty；Now, opening recoil mouth and be passed through backflushing medium in filter cylinder, filter element is recoiled by the direction contrary along chlorosilane slag slurries filtration, the silica flour that filter element adheres to and metal chloride is rinsed out, and is discharged by slag-drip opening；Meanwhile, when filter element blocking causes filter cylinder pressure to increase to setting value, the first relief valve is beaten and is discharged by emptying, extra exit by filter cylinder pressure.
More preferably: described recoil mouth is located at the top of filter cylinder and is connected by back flush line and a nitrogen pot, and described recoil control valve is located on back flush line.
Use said structure; the reaction that heat release is extremely strong can occur between metal chloride particularly aluminum chloride itself and water, rinse improper meeting and set off an explosion, therefore make to be purged with nitrogen during by being connected to backwash with nitrogen pot; rinse under conditions of sealing protection, it is to avoid metal chloride hydrolysis heat release causes danger.
More preferably: described slag-drip opening is located at the bottom of filter cylinder and is connected by Residue extraction pipeline and a Water Tank, and described slagging coutrol valve is located on Residue extraction pipeline；The bottom of described Water Tank is provided with discharge opeing outlet and waste, is respectively arranged with discharge opeing control valve and blowdown control valve at described discharge opeing outlet and waste.
Use said structure, the waste residue stayed after filtering is passed in Water Tank, after precipitation, by discharge opeing outlet, less for solid particle in Water Tank partially liq is discharged recycling, by waste, the remaining sewage discharge more containing solid particle is processed.
More preferably: the top of described filter cylinder is connected with the entrance that purges steam by a purging pipeline, and described purging pipeline is provided with purging control valve.
Use said structure, in filter cylinder, it is passed through steam when backwash by the entrance that purges steam filter cylinder is heated, solid particle is avoided to solidify at normal temperatures, it is made to stick on the filter element of filter cylinder and the sidewall of filter cylinder, cause cleaning difficulty, simultaneously by the setting in filter cylinder upper end, filter element can be rinsed to a certain extent, reduce and stick to be solid particle on filter element.
More preferably: be provided with steam inlet on described Water Tank, described steam inlet is provided with steam control valve.
Use said structure, heated on Water Tank by steam inlet, it is to avoid the solid particle in Water Tank solidifies in Water Tank and sticks on the sidewall of Water Tank, cause cleaning difficulty.
More preferably: the second pressure modulating opening being provided with on described nitrogen pot with being vented, extra exit is connected, it is provided with the second relief valve at described second pressure modulating opening, being provided with keying control valve at described emptying, extra exit, described first relief valve and the second relief valve are arranged in parallel and the first relief valve, the second relief valve are twin relief valve.
Using said structure, pressure in reduction reduction filter cylinder opened by the first relief valve when pressure is excessive in filter cylinder, when in nitrogen pot, pressure is excessive, the pressure reduced in nitrogen pot opened by the second relief valve；In addition, by using the design of twin relief valve, it is in normally off due to keying control valve after filter cylinder or nitrogen pot are passed in pipeline, in causing pipeline, pressure increases, and when in pipeline, pressure reaches certain value, the second relief valve or the first relief valve can be opened delivered to by pressure in nitrogen pot or filter cylinder, the pressure making three is in the middle of dynamic equilibrium, and the pressure reduction in filter cylinder and nitrogen pot will not have big difference, it is simple to provide enough pressure to complete recoil in nitrogen pot when needing recoil.
More preferably: on described filter cylinder, be additionally provided with row pressure mouth, described row pressure mouth is connected with emptying, extra exit by pipeline, and described row pressure mouth, the first relief valve and the second relief valve are arranged in parallel.
Use said structure, when the pressure in pipeline three is the most too high when between filter cylinder, nitrogen pot and filter cylinder and nitrogen pot, row pressure control valve can be opened and keying control valve carries out manual row pressure, it is to avoid in filter cylinder and nitrogen pot, pressure is excessive causes potential safety hazard.
More preferably: the top of described Water Tank is provided with emptying outlet, and described emptying exit is provided with emptying control valve.
Use said structure, cause Water Tank internal gas pressure to increase due to the filling of sewage and nitrogen after completing to clean, before discharge opeing, first pass through emptying export Water Tank is exhausted blood pressure lowering, it is to avoid sewage pressure inside the tank is crossed senior general's solid particle and also discharged when discharge opeing.
More preferably: described filter cylinder unloads waterpipe by one and is connected with unloading water out, unload to be provided with on waterpipe described in and unload water control valve.
Use said structure, owing to the liquid above filter cylinder passes through filtration, tend to clean, when preparing to use nitrogen backwash, part can be expelled directly out by unloading water out, so that the pressure in pressure relative nitrogen tank in filter is less, thus improve the pressure reduction between nitrogen pot and filter cylinder so that nitrogen is to have bigger impulsive force in recoil in using nitrogen pot.
More preferably: when the flow in described filter cylinder is 0.7-0.8t/h, operating temperature is 140-160 DEG C, operating pressure is 2MPa, normal filtration, pressure reduction is 0.1-0.15MPa.
Use said structure, it is ensured that filter efficiency, reduce solid particle simultaneously and solidify on cartridge sidewall and filter element.
In sum, this utility model has the advantages that, by being arranged on after filter cylinder uses a period of time of nitrogen pot, it is carried out backwash, the solid particle adhered on filter element is separated with filter element, and enter in Water Tank by slag-drip opening, and in Water Tank, carry out simple solid, liquid separation, being discharged by discharge opeing outlet by partially liq few for solid particle in Water Tank, the sewage that finally will be left behind is discharged and is processed；Meanwhile, purge steam in using nitrogen backwash and filter process, solution is incubated, solid particle can be avoided to solidify, and it is more prone to rinse the solid particle sticked on filter element and sidewall, improve cleaning performance, extend filter cylinder and the service life of filter element；Additionally, pressure reduction can be improved by unloading water out regulation pressure, thus there is more preferable repercussion effect in flushing process.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of embodiment one；
Fig. 2 is the enlarged diagram of filter cylinder in Fig. 1；
Fig. 3 is the enlarged diagram of nitrogen pot in Fig. 1；
Fig. 4 is the enlarged diagram of Water Tank in Fig. 1；
Fig. 5 is the structural representation of embodiment one；
Fig. 6 is that the A of Fig. 5 is to structural representation.
In figure, 1, filter cylinder；11, charging aperture；12, discharging opening；13, emptying extra exit；14, purge steam entrance；15, water out is unloaded；2, nitrogen pot；21, nitrogen inlet；3, Water Tank；31, waste；32, steam inlet；33, discharge opeing outlet；34, emptying outlet；V1-A, inlet control valve；V2-A, discharging control valve；V3-A, slagging coutrol valve；V4-A, unload water control valve；V5-A, recoil control valve；V6-A, row pressure control valve；V7-A, the first relief valve；V8-A, purging control valve；V1, nitrogen gas control valve；V2, nitrogen valve；V3, the second relief valve；V4, keying control valve；V51, discharge opeing control valve；V61, steam control valve；V71, emptying control valve；V81, blowdown control valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.
Embodiment 1: a kind of chlorosilane filter, such as Fig. 1, shown in Fig. 3 and Fig. 5, including five filter cylinders being arranged in parallel 1, two Water Tanks 3 and a nitrogen pot 2, charging aperture 11 it is provided with on filter cylinder 1, discharging opening 12, slag-drip opening and backwash mouth, charging aperture 11 and discharging opening 12 are respectively arranged on the sidewall at filter cylinder about 1 two ends, chlorosilane slurry material is derived from upper end after filter cylinder 1 lower end passes into filtration, at charging aperture 11, inlet control valve V1-A and discharging control valve V2-A it is respectively arranged with on discharging opening 12, inlet control valve V1-A and discharging control valve V2-A is gate valve.
Slag-drip opening is located at the bottom of filter cylinder 1 and is connected with Water Tank 3 by a Residue extraction pipeline, five filter cylinders 1 are connected with two Water Tanks 3 respectively with the form of two, three points respectively, at Residue extraction pipeline, the position of slag-drip opening being provided with slagging coutrol valve V3-A, slagging coutrol valve V3-A is normally-closed pneumatic gate valve.Backwash mouth is positioned at the top of filter cylinder 1, and the backwash mouth of five filter cylinders 1 is all connected with nitrogen pot 2 by back flush line, with reference to Fig. 3, nitrogen inlet 21 and nitrogen outlet it is provided with on nitrogen pot 2, the backwash mouth of nitrogen outlet and filter cylinder 1 connects, being respectively arranged with nitrogen gas control valve V1 and nitrogen valve V2 in nitrogen inlet 21 and nitrogen outlet, nitrogen valve V2 selects check-valves, and nitrogen gas control valve V1 is Non-return gate valve.
At back flush line, the position of backwash mouth being provided with recoil control valve V5-A, recoil control valve V5-A is normally-closed pneumatic gate valve.
With reference to Fig. 4, the bottom of Water Tank 3 is provided with discharge opeing outlet 33, waste 31 and steam inlet 32, the top of Water Tank 3 is provided with emptying outlet 34, export in discharge opeing and at 33, be provided with discharge opeing control valve V51, blowdown control valve V81 it is provided with at waste 31, it is provided with steam control valve V61 at steam inlet 32, at emptying outlet 34, is provided with emptying control valve V71.
Wherein, sewage in Water Tank 3 is entered decontamination tank by outlet of sewer；Discharge opeing control valve V51, blowdown control valve V81, steam control valve V61 and emptying control valve V71 are gate valve.
With reference to Fig. 1, the top of filter cylinder 1 is connected with the entrance 14 that purges steam by a purging pipeline, and purging pipeline is provided with purging control valve V6-A, and purging control valve V6-A selects gate valve.
Being additionally provided with the first pressure modulating opening and row pressure mouth, the first pressure modulating opening and row pressure mouth on filter cylinder 1 and be arranged at the top of filter cylinder 1, the first pressure modulating opening is all connected by pipeline and an emptying extra exit 13 with row pressure mouth；It is provided with row pressure control valve V6-A at row pressure mouth, at the first pressure modulating opening, is provided with the first relief valve V7-A；It is provided with on nitrogen pot 2 and is vented the second pressure modulating opening that extra exit 13 is connected, at the second pressure modulating opening, being provided with the second relief valve V3；Wherein, first pressure modulating opening, row pressure mouth and the second pressure modulating opening are all parallel on emptying, safety corridor by pipeline, emptying, safety corridor are located at away from filter cylinder 1 and one end of nitrogen pot 2 in emptying extra exit 13, emptying, safety corridor emptying extra exit 13 at be provided with and open and close control valve V4.
Wherein, row pressure control valve V6-A is normally-closed pneumatic gate valve, and keying control valve V4 is gate valve, and the first relief valve V7-A, the second relief valve V3 are twin relief valve.By the first pressure modulating opening and the second pressure modulating opening being connected on emptying, safety corridor, at emptying extra exit 13, it is provided with keying control valve V4, and the first relief valve V7-A, the second relief valve V3 are set to twin relief valve.
Pressure in first relief valve V7-A opens reduction reduction filter cylinder 1 when pressure is excessive in filter cylinder 1, when in nitrogen pot 2, pressure is excessive, the second relief valve V3 opens the pressure reduced in nitrogen pot 2；In addition, by using the design of twin relief valve, it is in normally off due to keying control valve V4 after filter cylinder 1 or nitrogen pot 2 are passed in pipeline, in causing pipeline, pressure increases, and when in pipeline, pressure reaches certain value, the second relief valve V3 or the first relief valve V7-A can be opened and pressure is delivered in nitrogen pot 2 or filter cylinder 1, the pressure making three is in the middle of dynamic equilibrium, and the pressure reduction in filter cylinder 1 and nitrogen pot 2 will not have big difference, it is simple to provide enough pressure to complete to recoil in nitrogen pot 2 when needing recoil.Row pressure control valve V6-A can be opened when pressure is the most too high in above three and keying control valve V4 carries out row pressure.
In the present embodiment the flow in filter cylinder 1 and pipeline be 0.7-0.8t/h, operating temperature be 140-160 DEG C, operating pressure when being 2MPa, normal filtration pressure reduction be 0.1-0.15MPa.
The top of filter cylinder 1 is additionally provided with for unloading water out 15, unloads to be provided with on water out 15 and unloads water control valve V4-A, unloads water control valve V4-A position gate valve.
After filter puts into operation, the granule foreign material in raw material by filter assemblies, are intercepted by medium from below to up by the outer surface of filter element, and clean liquid, by interior discharge, flows out through filter outlet.Along with the aggregation retained on filter element increases, the differential pressure between import and export material house steward is gradually increased, and when this differential pressure reaches a certain setting value, filter enters backwash duty.
When preparing recoil, close inlet control valve V1-A and discharging control valve V2-A, open and unload water control valve V4-A part solution in filter cylinder 1 is discharged the pressure reduced in filter cylinder 1, then open recoil control valve V5-A the nitrogen in nitrogen pot 2 is passed in filter cylinder 1.By the pressure reduction between nitrogen pot 2 and filter cylinder 1, filter element is produced impact effect, filter element and filter cylinder 1 sidewall are carried out, the solid particle that filter element adheres to is separated with filter element.And open slagging coutrol valve V3-A, and enter in Water Tank 3 by slag-drip opening, Water Tank 3 carries out simple solid, liquid separation, by partially liq few for solid particle in Water Tank 3 by discharge opeing outlet 33 discharge, the sewage that finally will be left behind is discharged and is processed.
Claims (10)
1. a chlorosilane assist type automatic backwashing filter, including one or more filter cylinders (1) being arranged in parallel, it is characterized in that: the upper end of described filter cylinder (1) is provided with charging aperture (11) and slag-drip opening, the upper end of described filter cylinder (1) is provided with discharging opening (12) and for being passed through the recoil mouth of filter cartridge flushing for backflushing medium；Inlet control valve (V1-A), discharging control valve (V2-A), slagging coutrol valve (V3-A) and recoil control valve (V5-A) it is respectively arranged with on described charging aperture (11), discharging opening (12), slag-drip opening and backwash mouth；Being additionally provided with the first pressure modulating opening on described filter cylinder (1), described first pressure modulating opening is connected by pipeline and an emptying, extra exit, is provided with the first relief valve (V7-A) at described first pressure modulating opening.
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 1, it is characterized in that: described recoil mouth is located at the top of filter cylinder (1) and is connected by back flush line and a nitrogen pot (2), and described recoil control valve (V5-A) is located on back flush line.
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 2, it is characterized in that: described slag-drip opening is located at the bottom of filter cylinder (1) and is connected by Residue extraction pipeline and a Water Tank (3), and described slagging coutrol valve (V3-A) is located on Residue extraction pipeline；The bottom of described Water Tank (3) is provided with discharge opeing outlet (33) and waste (31), and described discharge opeing outlet (33) and waste (31) place are respectively arranged with discharge opeing control valve (V51) and blowdown control valve (V81).
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 1, it is characterized in that: the top of described filter cylinder (1) is connected with the entrance that purges steam (14) by a purging pipeline, and described purging pipeline is provided with purging control valve (V8-A).
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 3, is characterized in that: be provided with steam inlet (32) on described Water Tank (3), described steam inlet (32) are provided with steam control valve (V61).
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 2, it is characterized in that: be provided with on described nitrogen pot (2) and the second pressure modulating opening being vented, extra exit is connected, the second relief valve (V3) it is provided with at described second pressure modulating opening, being provided with keying control valve (V4) at described emptying, extra exit, described first relief valve (V7-A) and the second relief valve (V3) are arranged in parallel and the first relief valve (V7-A), the second relief valve (V3) are twin relief valve.
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 6, it is characterized in that: described filter cylinder is additionally provided with row pressure mouth on (1), described row pressure mouth is connected with emptying, extra exit by pipeline, and described row pressure mouth, the first relief valve (V7-A) and the second relief valve (V3) are arranged in parallel.
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 3, is characterized in that: the top of described Water Tank (3) is provided with emptying outlet (34), and described emptying outlet (34) place is provided with emptying control valve (V71).
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 2, is characterized in that: described filter cylinder (1) unloads waterpipe by one, and (15) are connected with unloading water out, described in unload to be provided with on waterpipe and unload water control valve (V4-A).
A kind of chlorosilane assist type automatic backwashing filter the most according to claim 1, is characterized in that: when the flow in described filter cylinder (1) is 0.7-0.8t/h, operating temperature is 140-160 DEG C, operating pressure is 2MPa, normal filtration, pressure reduction is 0.1-0.15MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620297726.0U CN205495095U (en) | 2016-04-11 | 2016-04-11 | Automatic back flush filter of chlorosilane auxiliary type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620297726.0U CN205495095U (en) | 2016-04-11 | 2016-04-11 | Automatic back flush filter of chlorosilane auxiliary type |
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| CN205495095U true CN205495095U (en) | 2016-08-24 |
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| CN201620297726.0U Active CN205495095U (en) | 2016-04-11 | 2016-04-11 | Automatic back flush filter of chlorosilane auxiliary type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445311A (en) * | 2022-09-29 | 2022-12-09 | 罗斯（无锡）设备有限公司 | Continuous washing and filtering method |
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2016
- 2016-04-11 CN CN201620297726.0U patent/CN205495095U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445311A (en) * | 2022-09-29 | 2022-12-09 | 罗斯（无锡）设备有限公司 | Continuous washing and filtering method |
| CN115445311B (en) * | 2022-09-29 | 2024-02-06 | 罗斯（无锡）设备有限公司 | Continuous washing and filtering method |
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