CN203598642U - Leaching device - Google Patents
Leaching device Download PDFInfo
- Publication number
- CN203598642U CN203598642U CN201320704655.8U CN201320704655U CN203598642U CN 203598642 U CN203598642 U CN 203598642U CN 201320704655 U CN201320704655 U CN 201320704655U CN 203598642 U CN203598642 U CN 203598642U
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- CN
- China
- Prior art keywords
- drip washing
- sieve plate
- washing equipment
- utility
- model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000002386 leaching Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000005406 washing Methods 0.000 claims description 41
- 238000009826 distribution Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 31
- 239000005046 Chlorosilane Substances 0.000 description 28
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 28
- 230000009467 reduction Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 13
- 230000005494 condensation Effects 0.000 description 12
- 238000009833 condensation Methods 0.000 description 12
- 239000000428 dust Substances 0.000 description 8
- 239000003595 mist Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HICCMIMHFYBSJX-UHFFFAOYSA-N [SiH4].[Cl] Chemical compound [SiH4].[Cl] HICCMIMHFYBSJX-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a leaching device. The leaching device comprises a shell, a sieve plate, a liquid distributor and a gas distributor, wherein the shell is provided with a gas inlet, a gas outlet, a liquid inlet, a liquid outlet and a condensed liquid outlet; the gas inlet is formed in the lower part of the shell; the gas outlet is formed in the top of the shell; the liquid inlet is formed in the upper part of the shell; the liquid outlet is formed in the bottom of the shell; the condensed liquid outlet is formed in the lower part of the shell; the condensed liquid outlet is higher than the gas inlet; the sieve plate is arranged between the liquid inlet and the condensed liquid outlet in the shell; the liquid distributor is arranged in the shell and connected with the liquid inlet; the gas distributor is arranged in the shell and connected with the gas inlet. The device is simple in process, stable to operate and capable of effectively improving the condensing efficiency of the mixed gas, thus the energy consumption and the operation cost are greatly reduced.
Description
Technical field
The utility model relates to field of polysilicon production, and particularly, the utility model relates to drip washing equipment.
Background technology
In traditional reduction vent gas treatment process, in the method that the dedusting in reduction tail gas separates with chlorosilane, the method for more employing bubbling.The leacheate using passes into bubble tower after using refrigerant cooling, and also has the storage tank of some attached exterior liquid bodies, although the method can reach the object of chlorosilane in dedusting and initial gross separation reduction tail gas, flow process complexity, have fluctuation, vibration equipment larger, and energy consumption is higher.
Therefore, the dedusting of reduction tail gas in polycrystalline silicon production system and the separation equipment of chlorosilane need to be further improved.
Utility model content
The utility model one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, an object of the present utility model is to propose the drip washing equipment that a kind of flow process is simple, equipment stable, energy consumption is lower and condensation efficiency is higher.
According to an aspect of the present utility model, the utility model proposes a kind of drip washing equipment, according to embodiment of the present utility model, comprise: housing, described housing have be positioned at this lower housing portion air inlet, be positioned at this case top gas outlet, be positioned at this housing top inlet, be positioned at the liquid outlet of this housing bottom and be positioned at this lower housing portion and the condensate outlet higher than described air inlet; Sieve plate, described sieve plate is located in described housing and between described inlet and described condensate outlet; Liquid distribution trough, described liquid distribution trough is located in described housing and is connected with described inlet; And gas distributor, described gas distributor is located in described housing and is connected with described air inlet.According to the drip washing equipment of the utility model embodiment, by drip washing equipment, multiple sieve plate being set, can effectively improve the condensation efficiency of mist, thereby significantly reduce energy consumption and operating cost.
In addition, can also there is following additional technical characterictic according to the drip washing equipment of the utility model above-described embodiment:
Preferably, described sieve plate has multiple through holes, and the diameter of described through hole is 10～20 millimeters.Thus, can effectively prevent the accumulation of impurity particle, to further improve the condensation efficiency of mist.
Preferably, described sieve plate comprises multilayer, and described multiple sieve plate along the vertical direction each interval is arranged.Thus, can further improve the condensation efficiency of mist.
Preferably, described sieve plate comprises 1～10 layer, is preferably 2～5 layers.Thus, can improve heat transfer, mass transfer effect, to further improve the condensation efficiency of mist.
Preferably, the distance between adjacent sieve plate is 100～400 millimeters.Thus, can further improve the condensation efficiency of mist.
Preferably, the area sum of the fluid hole of described liquid distribution trough is greater than the area of described inlet.Thus, can further improve the condensation efficiency of mist.
Preferably, the area sum of the venthole of described gas distributor is greater than the area of described air inlet.Thus, can further improve the condensation efficiency of mist.
Preferably, in described gas outlet, be provided with gas-liquid separation device.Thus, can further improve the condensation efficiency of mist.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the drip washing device structure schematic diagram according to an embodiment of the utility model.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In prior art, drip washing equipment generally adopts void tower or fills the fillers such as a part of Pall ring, and top is provided with nozzle, and condensate liquid goes out the gaseous chlorine silane reduction tail gas is condensed into liquid state from nozzles spray.Because reduction tail gas can not all be arrived by spray, make gas-liquid heat exchange insufficient, understand some chlorosilane and remain in tail gas and lose, thereby reduced the casting yield of chlorosilane.In order to improve the casting yield of chlorosilane, normally adopt liquid pump to make low temperature chlorosilane liquid produced forced circulation in drip washing equipment, need to prepare chlorosilane deep-cooling heat exchanger for this reason, drip washing device temperature is controlled to lower scope.Thus, energy consumption and operating cost are increased considerably.And the drip washing equipment that is filled with Pall ring filler easily stops up for the more reduction tail gas of solid impurity content.
For this reason, according to an aspect of the present utility model, the utility model proposes a kind of drip washing equipment, below with reference to Fig. 1, the drip washing equipment of the utility model embodiment is described in detail.
According to specific embodiment of the utility model, this drip washing equipment comprises: housing 100, sieve plate 200, liquid distribution trough 300 and gas distributor 400.According to specific embodiment of the utility model, this drip washing equipment top is provided with two spray equipments, respectively for low temperature chlorosilane and circulation chlorosilane leacheate.It should be explained that, low temperature chlorosilane is the low temperature chlorosilane condensate liquid that follow-up deep cooling obtains, and this part chlorosilane can use pump, or enters spray equipment by potential difference; And circulation chlorosilane leacheate is the cycling elution liquid of drip washing equipment self, this part chlorosilane is to use pump to realize the circulation of chlorosilane.Utilize this drip washing equipment to process reduction tail gas, can remove the dust in reduction tail gas, adopt the chlorosilane of low temperature as leacheate simultaneously, the part chlorosilane in reduction tail gas can be condensed, and after drip washing, reduce the temperature of reduction tail gas.Thus, reached the object of dedusting, initial gross separation chlorosilane and reduction reduction exhaust temperature simultaneously.And by drip washing equipment, multiple sieve plate being set, can effectively improve leacheate and contact with reduction the effective of tail gas, and then can further improve the dedusting cooling efficiency of reduction tail gas.According to specific embodiment of the utility model, housing 100 have be positioned at these housing 100 bottoms air inlet 101, be positioned at these housing 100 tops gas outlet 102, be positioned at these housing 100 tops inlet 103, be positioned at the liquid outlet 104 of these housing 100 bottoms and be positioned at these housing 100 bottoms and the condensate outlet 105 higher than air inlet 101.According to specific embodiment of the utility model, in gas outlet 102, be provided with gas-liquid separation device 500.Also protocercal tail enters drip washing equipment through air inlet 101, leacheate enters drip washing equipment through inlet 103, and reduction tail gas and leacheate reverse contact in drip washing equipment, significantly increased liquid gas contact area, the tail gas that makes to reduce is all sprayed thus, can effectively improve dedusting and condensation effect.
According to specific embodiment of the utility model, sieve plate 200 is located in housing 100 and between inlet 103 and condensate outlet 105.According to specific embodiment of the utility model, sieve plate has multiple through holes, and the diameter of its through hole 201 is also not particularly limited, and according to concrete example of the present utility model, the diameter of through hole 201 can be 10～20 millimeters.If through-hole aperture is too small, after system a period of time out of service, may cause through hole blocked; And hole is excessive, hydraulic performance declines, and causes veneer decrease in efficiency, finally causes condensation dust removing effects bad.Therefore, select through-hole diameter between 10～20 millimeters, can guarantee condensation good dedusting effect, can avoid again through hole to stop up.According to embodiment of the present utility model, sieve plate 200 can be multiple sieve plate, and multiple sieve plate along the vertical direction each interval be arranged.According to specific embodiment of the utility model, the number of plies of sieve plate 200 is also not particularly limited, and according to concrete example of the present utility model, sieve plate 200 can be 1～10 layer, preferably 2～5 layers.If sieve plate is very few, makes mass-and heat-transfer insufficient, thereby affect dust removing effects.Therefore, by multiple sieve plate is set, can effectively improve heat transfer, mass transfer effect, to reach rectifying better, dust removing effects.According to specific embodiment of the utility model, the distance between adjacent sieve plate 200 is also not particularly limited, and according to concrete example of the present utility model, the distance between adjacent sieve plate 200 can be 100～400 millimeters.If adjacent sieve plate spacing is too small, it is serious that reduction tail gas is carried phenomenon during by sieve plate secretly, affect dust removing effects, and between adjacent sieve plate, spacing is excessive, will affect rectification effect.Thus, the distance of setting between adjacent sieve plate is 100～400 millimeters, to can reach better rectifying, dust removing effects.
According to specific embodiment of the utility model, liquid distribution trough 300 is located in housing 100 and is connected with inlet 103.According to embodiment of the present utility model, liquid distribution trough 300 has fluid hole 301, and according to specific embodiment of the utility model, the size of fluid hole 301 is also not particularly limited, according to concrete example of the present utility model, the area sum of fluid hole 301 can be greater than the area of inlet 103.Thus, can prevent that condensate flow-rate from crossing Accumulation Phenomenon slow and that cause, thereby affect dust removing effects.
According to specific embodiment of the utility model, gas distributor 400 is located in housing 100 and is connected with air inlet 101.According to embodiment of the present utility model, gas distributor 400 has venthole 401, and according to specific embodiment of the utility model, the size of venthole 301 is also not particularly limited, according to concrete example of the present utility model, the area sum of venthole 401 can be greater than the area of air inlet 101.Thus, can prevent that gas flow rate from crossing the phenomenon of feeling suffocated slow and that cause, thereby affect dust removing effects.
As mentioned above, can have and be selected from following advantage one of at least according to the drip washing equipment of the utility model embodiment:
Utilize drip washing equipment of the present utility model can realize the object of dedusting, initial gross separation chlorosilane and reduction reduction exhaust temperature;
Have advantages of simple to operate, stable according to the drip washing equipment of the utility model embodiment;
According to the drip washing equipment of the utility model embodiment, can use the low temperature chlorosilane condensate liquid that produces in the subsequent handling part as leacheate, fully reclaim thus cold; Simultaneously low temperature chlorosilane condensate liquid and entering does not need before drip washing equipment coolingly again, has saved cold;
According to embodiment drip washing equipment of the present utility model, the chlorosilane leacheate of discharging drip washing equipment is normal temperature, outer row's low temperature chlorosilane before comparing, the hydrogen chloride and the amounts of hydrogen that are dissolved in chlorosilane are reduced, thereby reduce in a large number the fixed gas gas flow that chlorosilane tank field produces, both save the cold consumption of chlorosilane tank field, also reduced chlorosilane tank field material loss;
According to embodiment drip washing equipment of the present utility model, improved the structure of existing drip washing equipment by increasing sieve plate in inside, significantly improve thus mass transfer and heat-transfer effect; Adopt this drip washing equipment can reduce the liquid level of bubbling simultaneously, solved the large problem of vibration equipment.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, modification, replacement and modification.
Claims (8)
1. a drip washing equipment, is characterized in that, comprising:
Housing, described housing have be positioned at described lower housing portion air inlet, be positioned at described case top gas outlet, be positioned at described housing top inlet, be positioned at the liquid outlet of described housing bottom and be positioned at described lower housing portion and the condensate outlet higher than described air inlet;
Sieve plate, described sieve plate is located in described housing and between described inlet and described condensate outlet;
Liquid distribution trough, described liquid distribution trough is located in described housing and is connected with described inlet; And
Gas distributor, described gas distributor is located in described housing and is connected with described air inlet.
2. drip washing equipment according to claim 1, is characterized in that, described sieve plate has multiple through holes, and the diameter of described through hole is 10～20 millimeters.
3. drip washing equipment according to claim 1 and 2, is characterized in that, described sieve plate comprises multilayer, and described multiple sieve plate along the vertical direction each interval is arranged.
4. drip washing equipment according to claim 3, is characterized in that, described sieve plate is 1～10 layer, is preferably 2～5 layers.
5. drip washing equipment according to claim 4, is characterized in that, the distance between adjacent sieve plate is 100～400 millimeters.
6. drip washing equipment according to claim 1, is characterized in that, the area sum of the fluid hole of described liquid distribution trough is greater than the area of described inlet.
7. drip washing equipment according to claim 1, is characterized in that, the area sum of the venthole of described gas distributor is greater than the area of described air inlet.
8. drip washing equipment according to claim 1, is characterized in that, in described gas outlet, is provided with gas-liquid separation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704655.8U CN203598642U (en) | 2013-11-08 | 2013-11-08 | Leaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704655.8U CN203598642U (en) | 2013-11-08 | 2013-11-08 | Leaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203598642U true CN203598642U (en) | 2014-05-21 |
Family
ID=50711343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320704655.8U Expired - Lifetime CN203598642U (en) | 2013-11-08 | 2013-11-08 | Leaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203598642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551007A (en) * | 2013-11-08 | 2014-02-05 | 中国恩菲工程技术有限公司 | Method and system for treating polycrystalline silicon reduction tail gas |
| CN103551003A (en) * | 2013-11-08 | 2014-02-05 | 中国恩菲工程技术有限公司 | Leaching equipment |
-
2013
- 2013-11-08 CN CN201320704655.8U patent/CN203598642U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551007A (en) * | 2013-11-08 | 2014-02-05 | 中国恩菲工程技术有限公司 | Method and system for treating polycrystalline silicon reduction tail gas |
| CN103551003A (en) * | 2013-11-08 | 2014-02-05 | 中国恩菲工程技术有限公司 | Leaching equipment |
| CN103551003B (en) * | 2013-11-08 | 2015-09-09 | 中国恩菲工程技术有限公司 | Drip washing equipment |
| CN103551007B (en) * | 2013-11-08 | 2015-12-02 | 中国恩菲工程技术有限公司 | The method and system of process polycrystalline silicon reduction exhaust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |