CN204987820U - Waste heat power generation system for paper surface gypsum board hot -blast stove - Google Patents
Waste heat power generation system for paper surface gypsum board hot -blast stove Download PDFInfo
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- CN204987820U CN204987820U CN201520689093.3U CN201520689093U CN204987820U CN 204987820 U CN204987820 U CN 204987820U CN 201520689093 U CN201520689093 U CN 201520689093U CN 204987820 U CN204987820 U CN 204987820U
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- flue gas
- steam turbine
- heat boiler
- blast stove
- board hot
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Abstract
The utility model discloses a waste heat power generation system for paper surface gypsum board hot -blast stove, its characterized in that: hot -blast flue gas stove (1), high temperature gas gas heater (2), exhaust -heat boiler heat exchanger (4), steam turbine (5) and generator (6) connect gradually, while steam turbine (5), condenser (7), vapor seal cooler (11), oxygen -eliminating device (12), exhaust -heat boiler heat exchanger (4), high -efficient dust remover (14), draught fan (15) and chimney (16) connect gradually, condenser (7), circulating water pump (8) and cooling tower (9) looks joint ring, gypsum board desiccator (3) is connected in high temperature gas gas heater (2), its characterized in that: set up backward flow flue gas bypass (18) between high temperature gas gas heater (2) and exhaust -heat boiler heat exchanger (4), chimney (16) is connected in backward flow flue gas bypass (18). Can improve the heat utilization efficiency of thistle board hot air drying stove by a wide margin.
Description
Technical field
The utility model relates to a kind of afterheat generating system, is specially the afterheat generating system that supporting Thistle board blast furnace uses.
Background technology
The dry heating system of existing plasterboard, adopts organic heat carrier furnace or hot-blast stove to provide plasterboard drying source, and tail row temperature is higher.Especially high-temperature flue gas-the air heat exchanger of hot-blast stove heating system employing, when temperature is lower than 280 DEG C, heat exchange efficiency sharply declines, hot air heat exchange difficult control of temperature, for ensureing plasterboard drying process stability contorting, high-temperature flue gas-air heat exchanger exit gas temperature general control more than 280 DEG C; Containing a large amount of residual heat resources in flue gas, after often adopting refluxing portion chimney import department's low-temperature flue gas and heat exchanger, the temperature adjustment of flue gas air distribution is to 250 ~ 320 DEG C, for gypsum baking operation, due to high/low temperature flue gas heat exchange heat waste, causes the waste of heat energy.
Summary of the invention
The purpose of this utility model is just to provide power generation system with residual heat of fume after the heat exchange of a kind of Thistle board drying system, and significantly can improve the efficiency of utilization of Thistle board blast furnace, for achieving the above object, technical solution adopted in the utility model is:
Hot blast combustion gas furnace, high-temperature flue gas heat exchanger, residual heat boiler for exchanging heat device, steam turbine are connected successively with generator, steam turbine, condenser, gland-sealing cooler, oxygen-eliminating device, residual heat boiler for exchanging heat device, high-efficiency dust remover, air-introduced machine are connected successively with chimney simultaneously, condenser, water circulating pump and cooling tower phase articulating, high-temperature flue gas heat exchanger connects plaster tablet drying machine, between described high-temperature flue gas heat exchanger and residual heat boiler for exchanging heat device, backflow flue gas bypass is set, backflow flue gas bypass connects chimney, arranges and unload grey adjustment control in described residual heat boiler for exchanging heat device.
Connect gypsum calcining machine between steam turbine and oxygen-eliminating device, between residual heat boiler for exchanging heat device and high-efficiency dust remover, connect gypsum dryer.
Described residual heat boiler for exchanging heat device is horizontal type waste heat boiler, is made up of superheater, evaporimeter and economizer.Described steam turbine is extraction-condensing steam turbine.
After arranging backflow flue gas bypass, the flue gas that race can be made to walk returns Thistle board hot-blast stove afterheat generating system, regulates combustion conditions, more energy-conservation;
Arrange in residual heat boiler for exchanging heat device and unload grey adjustment control, make Time-sharing control, unload ash in time, avoid the burden of increase system;
The high-temperature flue gas that Thistle board hot-blast stove produces and the heat exchange of high-temperature flue gas heat exchanger, the middle temperature clean hot air produced enters plaster tablet drying machine drying plaster boards, in after heat exchange, warm flue gas produces steam by residual heat boiler for exchanging heat device, pushing turbine drive electrical generators generates electricity, low-pressure steam after generating can be extracted out from turbine bleed point and be used for gypsum calcining, residual heat boiler for exchanging heat device tail smoke discharging also can supply gypsum drying machine drying gypsum, and mixed flue gas is discharged from chimney after high-efficiency dust remover depositing dust.
After this system completes plasterboard drying, waste heat is used for generating electricity, and significantly improves system thermal efficiency.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the utility model embodiment 1;
Fig. 2 is the system architecture schematic diagram of the utility model embodiment 2;
Fig. 3 is the system architecture schematic diagram of the utility model embodiment 3;
Fig. 4 is the system architecture schematic diagram of the utility model embodiment 4.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, hot blast combustion gas furnace 1, high-temperature flue gas heat exchanger 2, residual heat boiler for exchanging heat device 4, steam turbine 5 is connected successively with generator 6, steam turbine 5 simultaneously, condenser 7, gland-sealing cooler 11, oxygen-eliminating device 12, residual heat boiler for exchanging heat device 4, high-efficiency dust remover 14, air-introduced machine 15 is connected successively with chimney 16, condenser 7, water circulating pump 8 and cooling tower 9 phase articulating, high-temperature flue gas heat exchanger 2 connects plaster tablet drying machine 3, between described high-temperature flue gas heat exchanger 2 and residual heat boiler for exchanging heat device 4, backflow flue gas bypass 18 is set, backflow flue gas bypass 18 connects chimney 16, arrange in described residual heat boiler for exchanging heat device 4 and unload grey adjustment control 19, for horizontal type waste heat boiler structure, be beneficial to deashing and unload ash, described steam turbine 5 adopts extraction-condensing steam turbine, after steam turbine 5, establish condenser 7, gas turbine exhaust gas pressure can be reduced, improve the thermal efficiency, gland-sealing cooler 11 is also furnished with after steam turbine 5, make packing before and after steam turbine 5 be slightly negative pressure, condenser 7 auxiliary device has water circulating pump 8 and cooling tower 9, and condenser cooling water is recycled.
As shown in Figure 2, hot blast combustion gas furnace 1, high-temperature flue gas heat exchanger 2, residual heat boiler for exchanging heat device 4, steam turbine 5 are connected successively with generator 6, steam turbine 5, condenser 7, gland-sealing cooler 11, oxygen-eliminating device 12, residual heat boiler for exchanging heat device 4, gypsum dryer 17, high-efficiency dust remover 14, air-introduced machine 15 are connected successively with chimney 16 simultaneously, condenser 7, water circulating pump 8 and cooling tower 9 phase articulating, high-temperature flue gas heat exchanger 2 connects plaster tablet drying machine 3.
As shown in Figure 3, hot blast combustion gas furnace 1, high-temperature flue gas heat exchanger 2, residual heat boiler for exchanging heat device 4, steam turbine 5 are connected successively with generator 6, steam turbine 5, condenser 7, gland-sealing cooler 11, oxygen-eliminating device 12, residual heat boiler for exchanging heat device 4, high-efficiency dust remover 14, air-introduced machine 15 are connected successively with chimney 16 simultaneously, condenser 7, water circulating pump 8 and cooling tower 9 phase articulating, high-temperature flue gas heat exchanger 2 connects plaster tablet drying machine 3, connects gypsum calcining machine 18 between steam turbine 5 and oxygen-eliminating device 12.
As shown in Figure 4, hot blast combustion gas furnace 1, high-temperature flue gas heat exchanger 2, residual heat boiler for exchanging heat device 4, steam turbine 5 are connected successively with generator 6, steam turbine 5, condenser 7, gland-sealing cooler 11, oxygen-eliminating device 12, residual heat boiler for exchanging heat device 4, gypsum dryer 17, high-efficiency dust remover 14, air-introduced machine 15 are connected successively with chimney 16 simultaneously, condenser 7, water circulating pump 8 and cooling tower 9 phase articulating, high-temperature flue gas heat exchanger 2 connects plaster tablet drying machine 3, connects gypsum calcining machine 18 between steam turbine 5 and oxygen-eliminating device 12.
Below for 3,000 ten thousand m2/a gypsum lath product lines, by reference to the accompanying drawings 4 and the operation principle of embodiment 4 to this system illustrate.
Select the hot blast combustion gas furnace 1 of total exhaust gas volumn about 14 × 104Nm3/h, its exit gas temperature controls at 850 DEG C ± 10 DEG C, enter Cryogenic air 27 × 104Nm3/h heat exchange of high-temperature flue gas heat exchanger 2 and plaster tablet drying machine 3 system flowback, exit gas temperature controls at 510 DEG C ± 10 DEG C, after heat exchange, hot air temperature 320 DEG C ± 10 DEG C, enters plaster tablet drying machine 3 drying plaster boards again by circulation supply air system; After high-temperature flue gas heat exchanger 2 heat exchange, the flue gas of 510 DEG C ± 10 DEG C enters residual heat boiler for exchanging heat device 4 and carries out heat exchange, produce pressure 2.45MPa temperature 450 DEG C of superheated steams and be about 15t/h, enter the running of extraction-condensing steam turbine 5 pushing turbine, steam turbine 5 drives 3MW generator 6 to generate electricity; And the saturated steaming 6t/h of pressure 1.2MPa is extracted out from steam turbine 5 bleeding point, enter steam heat-exchanging type gypsum calcining machine 18 calcined gypsum; Condenser 7 is established after steam turbine 5, steam turbine 5 pressure at expulsion is made to be reduced to 0.007MPa, thus improving steam turbine 5 thermal efficiency, condensed water enters the economizer entrance of residual heat boiler for exchanging heat device 4 after oxygen-eliminating device 12 deoxygenation from gland-sealing cooler 11, refill boiler heat-exchanger system; Control residual heat boiler for exchanging heat device 4 exit gas temperature at 260 DEG C ± 10 DEG C, and enter gypsum dryer 17 and dry gypsum, about about 120 DEG C of exit gas temperature, discharged by chimney 16 after the process of high-efficiency dust remover 14 depositing dust under air-introduced machine 15 acts on.
Claims (7)
1. a Thistle board hot-blast stove afterheat generating system, it is characterized in that: hot blast combustion gas furnace (1), high-temperature flue gas heat exchanger (2), residual heat boiler for exchanging heat device (4), steam turbine (5) is connected successively with generator (6), steam turbine (5) simultaneously, condenser (7), gland-sealing cooler (11), oxygen-eliminating device (12), residual heat boiler for exchanging heat device (4), high-efficiency dust remover (14), air-introduced machine (15) is connected successively with chimney (16), condenser (7), water circulating pump (8) and cooling tower (9) phase articulating, high-temperature flue gas heat exchanger (2) connects plaster tablet drying machine (3), it is characterized in that: between described high-temperature flue gas heat exchanger (2) and residual heat boiler for exchanging heat device (4), backflow flue gas bypass (18) is set, backflow flue gas bypass (18) connects chimney (16).
2. Thistle board hot-blast stove afterheat generating system according to claim 1, is characterized in that: be connected with gypsum dryer (17) between residual heat boiler for exchanging heat device (4) and high-efficiency dust remover (14).
3. Thistle board hot-blast stove afterheat generating system according to claim 1, is characterized in that: be connected with gypsum calcining machine (18) between steam turbine (5) and oxygen-eliminating device (12).
4. Thistle board hot-blast stove afterheat generating system according to claim 1, is characterized in that: be connected with gypsum dryer (17) between residual heat boiler for exchanging heat device (4) and high-efficiency dust remover (14); Be connected with gypsum calcining machine (18) between steam turbine (5) and oxygen-eliminating device (12) simultaneously.
5. Thistle board hot-blast stove afterheat generating system according to claim 1, is characterized in that: described residual heat boiler for exchanging heat device (4) is horizontal type waste heat boiler, is made up of superheater, evaporimeter and economizer.
6. Thistle board hot-blast stove afterheat generating system according to claim 1, is characterized in that: described steam turbine (5) is extraction-condensing steam turbine.
7. Thistle board hot-blast stove afterheat generating system according to claim 1, is characterized in that: arrange in described residual heat boiler for exchanging heat device (4) and unload grey adjustment control (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520689093.3U CN204987820U (en) | 2015-09-08 | 2015-09-08 | Waste heat power generation system for paper surface gypsum board hot -blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520689093.3U CN204987820U (en) | 2015-09-08 | 2015-09-08 | Waste heat power generation system for paper surface gypsum board hot -blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204987820U true CN204987820U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520689093.3U Active CN204987820U (en) | 2015-09-08 | 2015-09-08 | Waste heat power generation system for paper surface gypsum board hot -blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204987820U (en) |
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2015
- 2015-09-08 CN CN201520689093.3U patent/CN204987820U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170524 Address after: 050499, Pingshan Road, Power Plant Road, Pingshan County, Hebei, Shijiazhuang Patentee after: Taishan gypsum (Pingshan) Co., Ltd. Address before: 271000 Shandong province Tai'an city Daiyue District Wen town Patentee before: Taishan Gypsum Co., Ltd. |