CN204596816U - For the exhaust treatment system of thin-film solar cells - Google Patents
For the exhaust treatment system of thin-film solar cells Download PDFInfo
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- CN204596816U CN204596816U CN201520273818.0U CN201520273818U CN204596816U CN 204596816 U CN204596816 U CN 204596816U CN 201520273818 U CN201520273818 U CN 201520273818U CN 204596816 U CN204596816 U CN 204596816U
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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
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Abstract
The utility model discloses a kind of exhaust treatment system for thin-film solar cells, described tail gas comprises DEZ tail gas and TMA tail gas, described exhaust treatment system comprises the heater supplied the station vacuum pump discharges gas inlet that pipe is communicated with, the offgas outlet be communicated with exhaust port and adjustable constant temperature with gas and heat, described heater is arranged between gas inlet and offgas outlet, described heater comprises the duct type outer wall for adjustable constant temperature heating, and the inner chamber of described duct type outer wall is provided with baffle type air channel.Exhaust treatment system for thin-film solar cells of the present utility model has the advantages that vent gas treatment ability is strong, vent gas treatment speed is fast, fail safe is high, with low cost and simple to operate.
Description
Technical field
The utility model relates to thin-film solar cells manufacturing technology field, specifically refers to a kind of exhaust treatment system for thin-film solar cells.
Background technology
Usually need to use diethyl zinc liquid (diethyl zinc vehicle economy Z) or trimethyl aluminium liquid (trimethyl aluminium is called for short TMA) in the preparation carrying out thin-film solar cells, DEZ and TMA is Liquid organometallic material, be the cacodorous liquid of water white transparency at normal temperatures and pressures, after heating, easily evaporate Sum decomposition.Meeting air can be natural, produces oxidation zinc white cigarette, can produce aluminium oxide white cigarette during TMA burning during DEZ burning.With water intense reaction, and decompose the flammable ethane gas of generation and catch fire.
In the manufacture of current thin film solar cell, DEE or TMA, usually by steel cylinder stored-gas supply station, often needs to carry out changing steel cylinder operation in routine use.In the process of changing bottle purging and filling, have a small amount of DEZ volatilization gas, this volatilization gas puts retort by sending after nitrogen dilution again by vacuum pump at present, discharge after being absorbed by reactant liquor.Reactant liquor is the mixing oil pomegranate class I liquid I that a kind of international vendor is special.
Due to the limited sorption capacity of reactant liquor, absorption reactant liquor needs periodic replacement (for DEZ, supplier provides standard often to use 20 bottles of DEZ just to change once, every bottle comprises reactant liquor 470KG), and this reactant liquor must import and to need air transport to arrive domestic, when changing liquid, need supplier's technical support simultaneously.The discarded reactant liquor changed also needs to carry out specialty place refuse reason, so operating cost is high.
Utility model content
The purpose of this utility model is to provide a kind of exhaust treatment system for thin-film solar cells, without the need to using reactant liquor, has the advantages that vent gas treatment ability is strong, vent gas treatment speed is fast, fail safe is high, with low cost and simple to operate.
The utility model can be achieved through the following technical solutions:
The utility model discloses a kind of exhaust treatment system for thin-film solar cells, comprise the offgas outlet supplied the station vacuum pump discharges gas inlet that pipe is communicated with gas and be communicated with exhaust port.Described exhaust treatment system also comprises the heater of adjustable constant temperature heating, described heater is arranged between gas inlet and offgas outlet, described heater comprises the duct type outer wall for adjustable constant temperature heating, and the inner chamber of described duct type outer wall is provided with baffle type air channel.By arranging heater and the baffle type air channel of adjustable constant temperature heating in exhaust treatment system, DEZ, TMA tail gas enters in baffle type air channel after being extracted by vacuum pump, the duct type outer wall of adjustable constant temperature heating produces high temperature, heat conduction is inner and make the outer pars intramuralis of heat and intercept fin surface to be in the condition of high temperature to water back, thus uses DEZ gas to occur to be oxidized or decomposition reaction under high-temperature situation.Because DEZ, TMA decomposition rate when temperature is higher is higher, but danger also can correspondingly increase, and therefore, the heat resolve temperature of described heater is generally arranged between 150 ~ 350 DEG C.After pyrolysis, DEZ, TMA tail gas can finally change powder and non-toxic gas into, powder deposition is at the outer pars intramuralis of heating and intercept fin surface, non-toxic gas is discharged rapidly by offgas outlet and is carried out later collection process, effectively prevent DEZ, TMA tail gas and directly discharges because DEZ, TMA toxic exhaust is on the impact of environment and personnel's personal safety.Continous way process can be carried out to DEZ, TMA tail gas by exhaust treatment system, without the need to absorbing liquid, effectively improve the vent gas treatment ability of DEZ; Arranged by adjustable temp, the speed of process can be regulated according to actual needs, the speed of effective quickening vent gas treatment, meanwhile, by the mode of continuous high-temperature decomposed tail gas process, without the need to using absorbing liquid, without the need to changing bottle operation frequently, both reduced the use cost of absorbing liquid thus the cost of reduction vent gas treatment, also simplify the step of operation, the chance that minimizing operative employee contacts with tail gas improves fail safe.
Described duct type outer wall comprises external thermal insulation and inner thermal insulating layer, is provided with the electromagnetic heating silk for heating between described external thermal insulation and inner thermal insulating layer.In actual use, Electromagnetic Heating silk generally adopts carbon steel material, has stronger mechanical strength and good resistance heating performance; By external thermal insulation, the object both having realized being incubated also effectively prevents from scalding, and takes into account heat-insulating property and the fail safe for the treatment of system; By arranging inner thermal insulating layer, both achieving the object of heating and thermal insulation, effectively prevent the corrosion of DEZ tail gas to Electromagnetic Heating silk, reduced the frequency that Electromagnetic Heating silk is safeguarded and changed, extended the useful life of exhaust treatment system.
Described baffle type air channel comprises some obstruct fins, and the adjacent dislocation of described obstruct fin is vertically set on the inwall of described inner thermal insulating layer, forms roundabout gas flow air duct between described obstruct fin and the inwall of base insulating layer.By intercepting the design of fin, effectively can slow down the velocity of liquid assets of DEZ, TMA tail gas at baffle type, extending the pyrolysis time of DEZ, TMA tail gas, ensure that the completeness that DEZ, TMA tail gas decomposes.Meanwhile, forming roundabout gas flow air duct by intercepting fin, having expanded the process spatial accommodation of DEZ, TMA tail gas, having increased the heating surface area of DEZ, TMA tail gas, having improved the disposal ability for the treatment of system.
Described exhaust treatment system also comprises temperature sensor, and described temperature sensor is two or more, and described temperature sensor is separately positioned on the middle part of heater, and described temperature sensor is electrically connected by adjustable temperature switch with Electromagnetic Heating silk.Adjustable temperature switch can realize exhaust treatment system and possess the adjustment of temperature bound, and bound is reported to the police and arranged.The function such as overtemperature alarm, protection, realizes the mode of operation of normal-early warning-report to the police-cut off the electricity supply.In actual use, PID thermostatic control system, by the warning of temperature setting bound two sections, is respectively used to alarm and warning power cutoff.In the circuit of reality connects, all temperature sensors are connected with PID thermostatic control system simultaneously, and arbitrary temperature sensor carries out temperature alarming and can cut off the electricity supply, and ensure that stability and the fail safe of exhaust treatment system.
Also be provided with flame arrester between described vacuum pump discharges pipe and gas inlet, flame arrester be installed and can prevent from occurring abnormal combustion tempering in heater, ensure the fail safe of exhaust treatment system further, take precautions against DEZ by the potential safety hazard of igniting.In addition, installed dust filter unit additional at blast pipe end, the dust-filtering likely got rid of from duct type bringing-up section has been fallen, protects environment.
The sidewall of described duct type outer wall is connected with nitrogen gas delivery-line and compressed air tunnel, and described nitrogen gas delivery-line, compressed air tunnel are communicated with by Valve controlling with described baffle type air channel.By arranging nitrogen gas delivery-line and compressed air tunnel, nitrogen can be passed into when DEZ, TMA tail gas concentration is higher to dilute, the fully oxidized reaction Sum decomposition that compressed air realizes DEZ, TMA tail gas is further passed into when DEZ, TMA tail gas fully heats, pass through oxidation Decomposition, DEZ is finally converted into as zinc oxide and carbon dioxide, TMA is finally converted into as aluminium oxide and carbon dioxide, ensure that the completeness of the process of tail gas.
Described Valve controlling is communicated with the valve used and comprises for the electromagnetically operated valve of break-make control and the needle-valve for flow control.Electromagnetically operated valve is connected with power supply simultaneously, and when power supply is cut-off, electromagnetically operated valve also can be turned off, and effectively can regulate nitrogen and compressed-air actuated concrete flow by needle-valve.
Described exhaust treatment system also comprises PLC touch-screen, and described PLC touch-screen is connected with temperature sensor, electromagnetic heating silk, PID thermostatic control system point simultaneously.By PLC touch-screen, realize man-machine interaction and arrange, simplify the operation course.
Described PLC touch-screen is also provided with RS485 data-interface.Realize communication function by RS485 data-interface, the later stage can be facilitated to access DEZ supervisory control system and realize Intellectualized monitoring and remote monitoring.
Adopt Flange joint between described flame arrester and described blast pipe, facilitate the later stage to the clean and maintenance of heater, the acid solution such as citric acid or watery hydrochloric acid can be added by the hole on flange and clean.
Utilize an exhaust gas treating method for described exhaust treatment system, comprise the following steps:
The first step, heating means preheats, by regulating heater, make the temperature in baffle type air channel control between 150 ~ 350 DEG C;
Second step, vent gas treatment heat resolve, after the temperature of device preheating to be heated meets the requirements, opens vacuum pump, from gas inlet, tail gas is transported to baffle type air channel, carries out the heat resolve of tail gas.
Also pass into nitrogen in the process of the vent gas treatment heat resolve described in described second step to carry out dilute concentration dilution process and pass into compressed air carrying out accelerated decomposition process.
The mode of heating of described heater is Electromagnetic Heating, and the power of described Electromagnetic Heating is 2 ~ 3.5KW.In actual use, the general 2KW that uses can meet actual requirement, effectively saves energy consumption
A kind of exhaust treatment system for thin-film solar cells of the utility model and processing method, have following beneficial effect:
The first, vent gas treatment ability is strong, and by heater, achieve the continuous high-temperature process of DEZ, TMA tail gas, the spatial accommodation of DEZ, TMA tail gas has been expanded in baffle type air channel, improves the disposal ability of exhaust treatment system;
The second, vent gas treatment speed is fast, and by adopting continuous high-temperature resolution process, without the need to using absorbing liquid, change bottle operation without the need to carrying out, vent gas treatment continuity is strong, and vent gas treatment is very fast;
Three, fail safe is high, and by continuous high-temperature resolution process, DEZ, TMA tail gas carries out pyrolysis process in the pipeline closed, and disclosure risk is low, simplifying and changing a bottle step, reducing operating personnel and DEZ, TMA tail gas exposure risk without the need to using absorbing liquid;
Four, with low cost, the process of DEZ, TMA vent gas treatment, without the need to using absorbing liquid, saves the purchase cost of absorbing liquid, also without the need to carrying out the regeneration of absorbing liquid frequently, reducing regeneration of absorption solution cost, decreasing human users, saved human cost;
Five, simple to operate, whole vent gas treatment process is without the need to carrying out the loaded down with trivial details regeneration process of changing bottle operation and absorbing liquid, and omnidistance continuous high-temperature resolution process, simple operation is high.
Accompanying drawing explanation
Accompanying drawing 1 is the composition schematic diagram of a kind of exhaust treatment system for thin-film solar cells of the utility model;
Mark in accompanying drawing comprises: 1, gas inlet, and 2, offgas outlet, 3, external thermal insulation, 4, electromagnetic heating silk, 5, inner thermal insulating layer, 6, temperature sensor, 7, needle-valve, 8, electromagnetically operated valve, 9, vacuum pump, 10, flame arrester, 11, DN40 stainless steel tube, 12, fin is intercepted, 13, PID thermostatic control system; 14, nitrogen gas delivery-line, 15, compressed air tunnel, 20, dust filter unit.
Embodiment
In order to make those skilled in the art person understand the technical solution of the utility model better, below in conjunction with embodiment and accompanying drawing, the utility model product is described in further detail.
As shown in Figure 1, a kind of exhaust treatment system for thin-film solar cells, described tail gas comprises DEZ tail gas and TMA tail gas, and described exhaust treatment system comprises the offgas outlet 2 supplied station vacuum pump 9 gas inlet that blast pipe is communicated with 1 with gas and be communicated with exhaust port.Described exhaust treatment system also comprises the heater of adjustable constant temperature heating, described heater is arranged between gas inlet 1 and offgas outlet 2, described heater comprises the duct type outer wall for adjustable constant temperature heating, and the inner chamber of described duct type outer wall is provided with baffle type air channel.Described duct type outer wall comprises external thermal insulation 3 and inner thermal insulating layer 5, is provided with the electromagnetic heating silk 4 for heating between described external thermal insulation 3 and inner thermal insulating layer 5.Described baffle type air channel comprises some obstruct fins 12, and the adjacent dislocation of described obstruct fin 12 is vertically set on the inwall of described inner thermal insulating layer 5, forms roundabout gas flow air duct between described obstruct fin 12 and the inwall of base insulating layer.Described exhaust treatment system also comprises temperature sensor 6, and described temperature sensor 6 is two or more, and described temperature sensor 6 is separately positioned on the middle part of heater, and described temperature sensor 6 is electrically connected by adjustable temperature switch with Electromagnetic Heating silk.Also be provided with flame arrester 10 between described vacuum pump 9 blast pipe and gas inlet 1, install dust filter unit 20 additional at blast pipe end.The sidewall of described duct type outer wall is connected with nitrogen gas delivery-line 14 and compressed air tunnel 15, and described nitrogen gas delivery-line 14, compressed air tunnel 15 are communicated with by Valve controlling with described baffle type air channel.Described Valve controlling is communicated with the valve used and comprises for the electromagnetically operated valve 8 of break-make control and the needle-valve 7 for flow control.Described exhaust treatment system also comprises PLC touch-screen, and described PLC touch-screen is connected with temperature sensor 6, electromagnetic heating silk 4, PID thermostatic control system 13 simultaneously.Described PLC touch-screen is also provided with RS485 data-interface.Flange joint is adopted between described flame arrester 10 and described blast pipe, stainless steel pipes is used to connect between offgas outlet 2 and heater, vacuum pump 9 blast pipe is also stainless steel pipes, effectively reduces the corrosion of DEZ, TMA tail gas to pipeline, extends the useful life of exhaust treatment system.
In FIG, in actual design, the heater profile of shown exhaust treatment system is cylinder pipeline configuration, and the length in baffle type air channel is 600mm, and diameter is 100mm, and material is chosen as carbon steel material.Obstruct fin 12 length in baffle type air channel is 75mm, and interleaved adjacent arranges formation air ventilation passage; Nitrogen gas delivery-line 14 is vertically set on distance gas inlet 150mm place, and compressed air tunnel 15 is vertically set on distance nitrogen gas delivery-line 14 200mm place; Gas inlet 1 is the stainless steel pipes of length 300mm, and the stainless steel pipes diameter adopted is 40mm, and gas inlet 1 is connected with also all adopting DN40 stainless steel tube 11 between blast pipe, between offgas outlet 2 and exhaust outlet.
Utilize an exhaust gas treating method for described exhaust treatment system, comprise the following steps:
The first step, heating means preheats, by regulating heater, make the temperature in baffle type air channel control between 150 ~ 350 DEG C;
Second step, vent gas treatment heat resolve, after the temperature of device preheating to be heated meets the requirements, opens vacuum pump, from gas inlet, tail gas is transported to baffle type air channel, carries out the heat resolve of tail gas.
Also pass into nitrogen in the process of the vent gas treatment heat resolve described in described second step to carry out dilute concentration dilution process and pass into compressed air carrying out accelerated decomposition process.
The mode of heating of described heater is Electromagnetic Heating, and the power of described Electromagnetic Heating is 2 ~ 3.5KW.
The above, be only preferred embodiment of the present utility model, not does any pro forma restriction to the utility model; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the utility model swimmingly; But all those skilled in the art are not departing within the scope of technical solutions of the utility model, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present utility model; Meanwhile, all according to substantial technological of the present utility model to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection range all still belonging to the technical solution of the utility model.
Claims (10)
1. the exhaust treatment system for thin-film solar cells, described tail gas comprises DEZ tail gas and TMA tail gas, described exhaust treatment system comprises supplies the gas inlet (1) that station vacuum pump (9) blast pipe is communicated with and the offgas outlet (2) be communicated with exhaust port with gas, it is characterized in that: described exhaust treatment system also comprises the heater of adjustable constant temperature heating, described heater is arranged between gas inlet (1) and offgas outlet (2), described heater comprises the duct type outer wall for adjustable constant temperature heating, the inner chamber of described duct type outer wall is provided with baffle type air channel.
2. the exhaust treatment system for thin-film solar cells according to claim 1, it is characterized in that: described duct type outer wall comprises external thermal insulation (3) and inner thermal insulating layer (5), between described external thermal insulation (3) and inner thermal insulating layer (5), being provided with the electromagnetic heating silk (4) for heating.
3. the exhaust treatment system for thin-film solar cells according to claim 2, it is characterized in that: described baffle type air channel comprises some obstruct fins (12), the adjacent dislocation of described obstruct fin (12) is vertically set on the inwall of described inner thermal insulating layer (5), forms roundabout gas flow air duct between described obstruct fin (12) and the inwall of base insulating layer.
4. the exhaust treatment system for thin-film solar cells according to claim 3, it is characterized in that: described exhaust treatment system also comprises temperature sensor (6), described temperature sensor (6) is two or more, described temperature sensor (6) is separately positioned on the middle part of heater, and described temperature sensor (6) is electrically connected by adjustable temperature switch with Electromagnetic Heating silk.
5. the exhaust treatment system for thin-film solar cells according to claim 4, it is characterized in that: be also provided with flame arrester (10) between described vacuum pump (9) blast pipe and gas inlet (1), described blast pipe end is also provided with dust filter unit (20).
6. the exhaust treatment system for thin-film solar cells according to claim 5, it is characterized in that: the sidewall of described duct type outer wall is connected with nitrogen gas delivery-line (14) and compressed air tunnel (15), and described nitrogen gas delivery-line (14), compressed air tunnel (15) are communicated with by Valve controlling with described baffle type air channel.
7. the exhaust treatment system for thin-film solar cells according to claim 6, is characterized in that: described Valve controlling is communicated with the valve used and comprises for the electromagnetically operated valve (8) of break-make control and the needle-valve (7) for flow control.
8. the exhaust treatment system for thin-film solar cells according to claim 7, it is characterized in that: described DEZ exhaust treatment system also comprises PLC touch-screen, described PLC touch-screen is connected with temperature sensor (6), electromagnetic heating silk (4), PID thermostatic control system (13) point simultaneously.
9. the exhaust treatment system for thin-film solar cells according to claim 8, is characterized in that: described PLC touch-screen is also provided with RS485 data-interface.
10. the exhaust treatment system for thin-film solar cells according to claim 9, is characterized in that: adopt Flange joint between described flame arrester (10) and described blast pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520273818.0U CN204596816U (en) | 2015-04-30 | 2015-04-30 | For the exhaust treatment system of thin-film solar cells |
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| CN201520273818.0U CN204596816U (en) | 2015-04-30 | 2015-04-30 | For the exhaust treatment system of thin-film solar cells |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835878A (en) * | 2015-04-30 | 2015-08-12 | 广东汉能薄膜太阳能有限公司 | Tail gas treatment system and tail gas treatment method used for thin-film solar cell |
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2015
- 2015-04-30 CN CN201520273818.0U patent/CN204596816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835878A (en) * | 2015-04-30 | 2015-08-12 | 广东汉能薄膜太阳能有限公司 | Tail gas treatment system and tail gas treatment method used for thin-film solar cell |
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