CN202131390U - Recirculated cooling water energy saving device for polycrystal ingot casting production - Google Patents
Recirculated cooling water energy saving device for polycrystal ingot casting production Download PDFInfo
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- CN202131390U CN202131390U CN201120201387U CN201120201387U CN202131390U CN 202131390 U CN202131390 U CN 202131390U CN 201120201387 U CN201120201387 U CN 201120201387U CN 201120201387 U CN201120201387 U CN 201120201387U CN 202131390 U CN202131390 U CN 202131390U
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- Prior art keywords
- water
- circulation
- cooling
- circulating
- water inlet
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- 239000000498 cooling water Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000005266 casting Methods 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 18
- 229920005591 polysilicon Polymers 0.000 claims abstract 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000007710 freezing Methods 0.000 description 7
- 230000008014 freezing Effects 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000002210 silicon-based material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Silicon Compounds (AREA)
Abstract
一种多晶铸锭生产循环冷却水节能装置，其组成是，冷却塔1、外循环水池2、外循环水泵12、外循环进水管10、换热器5的A组进水口与出水口、外循环回水管11依次串联组成第一封闭回路而成为外循环冷却系统；内循环水池3、内循环水泵4、换热器5的B组进水口与出水口、内循环进水管6、多晶硅铸锭炉7的水冷系统、内循环回水管6依次串联组成第二封闭回路而成为内循环冷却系统。本装置既满足多晶硅铸锭生产用循环冷却水的需要，又能节省投资成本、降低运行费用，确保产品品质；能满足循环水装置的节能、高效且性能稳定等要求。
An energy-saving device for circulating cooling water in the production of polycrystalline ingots, which is composed of a cooling tower 1, an external circulation pool 2, an external circulation water pump 12, an external circulation water inlet pipe 10, a water inlet and an outlet of group A of a heat exchanger 5, The outer circulation return pipe 11 is sequentially connected in series to form the first closed loop to form an outer circulation cooling system; the inner circulation pool 3, the inner circulation water pump 4, the water inlet and outlet of group B of the heat exchanger 5, the inner circulation water inlet pipe 6, the polysilicon casting The water cooling system of the ingot furnace 7 and the internal circulation return pipe 6 are sequentially connected in series to form a second closed loop to form an internal circulation cooling system. The device not only meets the needs of circulating cooling water for polysilicon ingot production, but also saves investment costs, reduces operating costs, and ensures product quality; it can meet the requirements of energy saving, high efficiency and stable performance of the circulating water device.
Description
Technical field
The utility model relates to a kind of polycrystalline silicon ingot casting production and uses the recirculated cooling water energy saver; Specifically be meant through improving the temperature of polycrystalline silicon ingot casting production labor skill recirculated cooling water; Thereby significantly reduce the service rating of recirculated cooling water device, the recirculated cooling water device that the quality of polycrystal silicon ingot is not affected.
Background technology
Polycrystalline silicon ingot or purifying furnace is the equipment that is used for the casting large-scale polycrystal silicon ingot, and it is with passing through the directional freeze condensation-crystallization after the silicon material high-temperature fusion, making it form the consistent silicon ingot in crystal orientation, thereby reach the requirement of manufacture of solar cells to the silicon chip quality.
The main production process of polycrystalline silicon ingot casting is: be placed on the oriented solidified blocks after packing into polycrystalline silicon material in the quartz crucible that is sprayed with coating, close burner hearth final vacuum system and start, burner hearth is evacuated to base vacuum, then heating.After treating that the silicon material melts fully, heat-insulation cage slowly up promotes, and the heat radiation that discharges during with the crystallization of silicon material through oriented solidified blocks makes and forms a vertical thermograde in the silicon material to the water-cooled inwall of lower furnace chamber.This thermograde makes the silicon liquid in the crucible begin to solidify from the bottom, crystal from the melt bottom to grown on top.After long brilliant the completion, silicon ingot is annealed, come out of the stove after the cooling and promptly accomplish whole ingot production process.The furnace chamber inwall constantly absorbs the heat that gives out from oriented solidified blocks etc. in this process, and this caloric requirement is taken away through the recirculated cooling water in the furnace chamber interlayer.
Most important in the ingot production process is exactly the control of long brilliant speed, has played conclusive effect through the heat that oriented solidified blocks gave out in numerous factors of the long brilliant speed of influence.And the temperature difference between oriented solidified blocks and furnace chamber inwall is the key factor that influences heat dissipation capacity, and the caloric requirement of furnace chamber inwall is taken away through recirculated cooling water, so the recirculated cooling water temperature has become one of processing parameter crucial in the ingot production process.
Polycrystalline silicon ingot or purifying furnace recirculated cooling water temperature nearly all in the current actual production all is to be controlled at about 24 ± 1 ℃.Reach this temperature requirement, need to adopt recirculating cooling water system.Existing recirculating cooling water system mainly is made up of semi-hermetic screw compressor (freezing unit), water-cooled condenser, strainer, liquid road valve, electric expansion valve, plate-type evaporator, electric control system etc.System with 20 450 type polycrystalline silicon ingot or purifying furnaces of 100MW production capacity is an example, needs 2 on the water pump of 75Kw, 1 on 30Kw water pump; 7.5Kw 2 of blower fans, one of the freezing unit of 360Kw is exactly because the existence and the long-time running of high-power freezing unit; System's scale of investment is big, the running cost extra-high-speed.
Summary of the invention
The technical problem that the utility model will solve is; To the existing defective that the recirculated cooling water device scale of investment is big, running cost is high; A kind of polycrystalline ingot production recirculated cooling water energy saver is proposed; It can satisfy the needs of polycrystalline ingot production to recirculated cooling water, can reduce investment and running cost again, guarantees that the stable production process of polycrystalline ingot casting is moved reliably.
The technical solution of the utility model is; Said polycrystalline ingot production recirculated cooling water energy saver comprises cooling tower, polycrystalline silicon ingot or purifying furnace, outer circulation pond, outer circulation water pump, interchanger, internal recycle pond, the internal recycle water pump of water-cooling system is arranged; Its constructional feature is that A group water-in and water outlet, the outer circulation return water pipe of said cooling tower, outer circulation pond, outer circulation water pump, outer circulation water inlet pipe, interchanger are composed in series first loop successively and become the outer circulation cooling system; B group water-in and water outlet, internal recycle water inlet pipe, the water-cooling system of polycrystalline silicon ingot or purifying furnace, the internal recycle return water pipe of said internal recycle pond, internal recycle water pump, interchanger are composed in series second loop successively and become the internal recycle cooling system.
Below the utility model made further specify.
Referring to Fig. 1; But save powerful freezing unit by said structure knowledge capital utility model; But form by two independent systems of internal recycle cooling and outer circulation cooling, the effect of internal recycle cooling system is that temperature through the work of recirculated water maintenance polycrystalline ingot furnace is in the scope that requires; The function of outer circulation cooling system is for the internal recycle cooling system low-temperature receiver to be provided; This installs inside and outside circulating cooling system and carries out indirect heat exchange through interchanger 5.Said internal recycle water pump and outer circulation water pump all can adopt VFC, and the internal recycle water pump comes control of conversion according to the pressure of water; Also can increase thermostat, regulate the water pump aperture automatically according to temperature at external circulation line.
The know-why of the utility model is; With the polycrystalline ingot production with the temperature of recirculated cooling water be set in 32 ℃ or more than; Through supporting ingot production technology being done suitably adjustment, in full accord when making the temperature of the brilliant speed of length and the recirculated cooling water of polycrystal silicon ingot be set in 24 ℃.This device drops to 30 ℃ or following with the water coolant of outer circulation cooling system through cooling tower 1, drops to about 32 ℃ through the recirculated cooling water temperature of interchanger 5 with the internal recycle cooling system then, makes the operation of device need consistent with supporting production technique.Because the cooling limit temperature of cooling tower 1 is exactly the wet-bulb temperature of environment; The wet-bulb temperature of China's overwhelming majority area surroundings is all between 24 ℃ to 29 ℃; If therefore the temperature of recirculated cooling water is set at 24 ℃, depending cooling tower alone is impossible meet the requirements of, and must also will use freezing unit.Have only temperature with recirculated cooling water be set in 32 ℃ or more than, device just can save high-power freezing unit, supporting production technique is not affected quality product simultaneously, this device has just been given play to its energy-conservation effect.
Know by above; The utility model is a kind of polycrystalline ingot production recirculated cooling water energy saver; It can satisfy the needs of polycrystalline ingot production to recirculated cooling water, can reduce investment and running cost again, guarantees that the stable production process of polycrystalline ingot casting is moved reliably; Guarantee product quality, can satisfy the requirements such as energy-conservation, efficient and stable performance of circulating water device.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
In the drawings:
1-cooling tower, 2-outer circulation pond, 3-internal recycle pond,
4-internal recycle water pump, 5-interchanger, 6-internal recycle return water pipe,
7-polycrystalline silicon ingot or purifying furnace, 8-internal recycle water inlet pipe, 9-TP, 10-outer circulation water inlet pipe, 11-outer circulation return water pipe, 12-outer circulation water pump,
13-filling pipe.
Embodiment
As shown in Figure 1; Said polycrystalline ingot production recirculated cooling water energy saver comprises cooling tower 1, polycrystalline silicon ingot or purifying furnace 7, outer circulation pond 2, outer circulation water pump 12, interchanger 5, internal recycle pond 3, the internal recycle water pump 4 of water-cooling system is arranged; Its constructional feature is, A group water-in and water outlet, the outer circulation return water pipe 11 of said cooling tower 1, outer circulation pond 2, outer circulation water pump 12, outer circulation water inlet pipe 10, interchanger 5 are composed in series first loop successively and become the outer circulation cooling system; B group water-in and water outlet, internal recycle water inlet pipe 6, the water-cooling system of polycrystalline silicon ingot or purifying furnace 7, the internal recycle return water pipe 6 of said internal recycle pond 3, internal recycle water pump 4, interchanger 5 are composed in series second loop successively and become the internal recycle cooling system.
This device does not contain freezing unit, and outer circulation water pump 12 provides power for the recirculated cooling water of outer circulation cooling system; Internal recycle water pump 4 provides power for the recirculated cooling water of internal recycle cooling system; Inflow temperature for control polycrystalline silicon ingot or purifying furnace 7 is equipped with TP 9 on internal recycle water inlet pipe 8; And outer circulation pond 2 is furnished with filling pipe 13 with internal recycle pond 3, with thinking system water supplement.
Interchanger 5 can adopt existing plate-type heat exchanger.
The working process of this device is; Polycrystalline silicon ingot or purifying furnace 7 required technological cycle water coolants are exported through internal recycle water pump 4 by internal recycle pond 3; Cold water through in plate-type heat exchanger 5 and the outer circulation pond 2 carries out becoming the process recycled water about 32 ℃ after the heat exchange; Recirculated water returns internal recycle pond 3 through internal recycle return water pipe 6 after internal recycle water inlet pipe 8 is imported, reached the required cooling performance of ingot production technology; Cold water in the outer circulation pond 2 is then through 12 outputs of outer circulation water pump; Process recycled water through in the circulating water pool 3 in 5 pairs of the plate-type heat exchangers cools off; Outer circulation water after heat-shift heats up becomes cold water and gets into outer circulation pond 2 once more after cooling tower 1 cooling, the next production cycle of beginning.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120201387U CN202131390U (en) | 2011-06-15 | 2011-06-15 | Recirculated cooling water energy saving device for polycrystal ingot casting production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120201387U CN202131390U (en) | 2011-06-15 | 2011-06-15 | Recirculated cooling water energy saving device for polycrystal ingot casting production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202131390U true CN202131390U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120201387U Expired - Lifetime CN202131390U (en) | 2011-06-15 | 2011-06-15 | Recirculated cooling water energy saving device for polycrystal ingot casting production |
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| CN (1) | CN202131390U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538479A (en) * | 2012-03-02 | 2012-07-04 | 重庆大全新能源有限公司 | Device and method for cooling circulating cooling water |
| CN103506333A (en) * | 2013-09-28 | 2014-01-15 | 无锡荣能半导体材料有限公司 | Silicone wafer degumming pre-washing device |
| CN104195631A (en) * | 2014-08-07 | 2014-12-10 | 浙江溢闳光电科技有限公司 | Cooling power generation system for polycrystalline silicon ingot |
| CN104451865A (en) * | 2013-09-24 | 2015-03-25 | 江苏南荣科技有限公司 | Crystal growth furnace constant-temperature cooling water system |
| CN104676823A (en) * | 2013-12-03 | 2015-06-03 | 浙江鸿禧能源股份有限公司 | Energy conversion implementation method |
| CN114061309A (en) * | 2020-11-04 | 2022-02-18 | 核工业理化工程研究院 | Closed circulation system for cooling and water supplying of crucible and operation method thereof |
-
2011
- 2011-06-15 CN CN201120201387U patent/CN202131390U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538479A (en) * | 2012-03-02 | 2012-07-04 | 重庆大全新能源有限公司 | Device and method for cooling circulating cooling water |
| CN102538479B (en) * | 2012-03-02 | 2013-08-28 | 重庆大全新能源有限公司 | Device and method for cooling circulating cooling water |
| CN104451865A (en) * | 2013-09-24 | 2015-03-25 | 江苏南荣科技有限公司 | Crystal growth furnace constant-temperature cooling water system |
| CN103506333A (en) * | 2013-09-28 | 2014-01-15 | 无锡荣能半导体材料有限公司 | Silicone wafer degumming pre-washing device |
| CN104676823A (en) * | 2013-12-03 | 2015-06-03 | 浙江鸿禧能源股份有限公司 | Energy conversion implementation method |
| CN104195631A (en) * | 2014-08-07 | 2014-12-10 | 浙江溢闳光电科技有限公司 | Cooling power generation system for polycrystalline silicon ingot |
| CN114061309A (en) * | 2020-11-04 | 2022-02-18 | 核工业理化工程研究院 | Closed circulation system for cooling and water supplying of crucible and operation method thereof |
| CN114061309B (en) * | 2020-11-04 | 2025-03-21 | 核工业理化工程研究院 | A crucible cooling water supply closed circulation system and operation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
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| CX01 | Expiry of patent term |