CN203960020U - A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar - Google Patents
A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar Download PDFInfo
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- CN203960020U CN203960020U CN201420265838.9U CN201420265838U CN203960020U CN 203960020 U CN203960020 U CN 203960020U CN 201420265838 U CN201420265838 U CN 201420265838U CN 203960020 U CN203960020 U CN 203960020U
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar, contain: carbonated drink flow process: a condenser, water channel import connects cooling tower (10) recirculated water, outlet one tunnel through air-to-water heat exchanger (9), an other road through mud well heater (1), and both finally send back in cooling tower (10); The exhaust steam that condenser hot vapour source ejects from steam turbine (4); Air flow process: a gas blower (8), air is delivered to heat exchanger 9, solar heat-collection plate (6) and fluidized bed dryer (2) successively, finally by crossing fly-ash separator 5, enter atmosphere; Mud flow process: fall into fluidized bed type drier 2 after the mud of pulverizing through pulverizer enters mud well heater 1 and be finally transported to feed bin 3 by belt conveyor.Native system takes full advantage of waste heat in power plant and the sun power of on-site, improved the heat-economy of power plant, by dry technology lignin-sludge, made it reach stabilization, innoxious, minimizing, for further recycling lays the first stone, have important practical significance.
Description
Technical field
The utility model relates to a kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar.
Background technology
Along with the increase of Chinese society expanding economy and urban population, environmental pollution is day by day serious, and people must impel increasing waste water to need to process to the protection of living environment and the continuous reinforcement of improvement consciousness.China's quantity of wastewater effluent in 2010 will reach 4.40 * 10
10m
3/ d, estimates that the year two thousand twenty quantity of wastewater effluent will reach 5.36 * 10
10m
3/ d, therefore at least produces 5,000,000 tons of mud every year.And practice at home and abroad shows, after traditional concentrated and dewatering process is processed, the water ratio of mud can not reach below 60%, and through mechanical dehydration, moisture percentage in sewage sludge is 75% left and right.Reach the further dehydration to mud, both economical method is to introduce conventional dry technology in chemical industry operation, and these dry technologies will expend the huge energy undoubtedly.
On the other hand, large-scale thermal power machine group energy-saving and emission-reduction are at present one of national important policies.Electric power plant circulating water temperature is lower, contained energy inferior quality, and all the time, its waste heat recovery approach is less, therefore develops power station circulating water afterheat recovery and utilization technology, has started the new way of power station energy-saving and emission-reduction, to improving Heat Economy of Power Plants, increase power station economic benefit significant.In conjunction with the comprehensive utilization of these new forms of energy of sun power, can greatly improve the energy quality of recirculated water, the utilising efficiency of its recovery waste heat also can increase greatly simultaneously.Moisture percentage in sewage sludge after common mechanical dehydration is in 80% left and right, and wherein free water large percentage, has created condition for sludge at low temperature is dry.
The principle of utilizing the municipal sludge dry technology of electric power plant circulating water waste heat is with having circulating water heating mud and the air of certain temperature, then by the heated mud of hot-air dry, thereby reaches the object of drying sludge.Air is recycled after the preliminary heating of water, then is disposed in the solar heat-collection plate heating of heat exchanger outlet, and temperature reaches 65 ℃.At this moment air is sent to sludge-drying in fluidized bed type drier and can obtains good effect, by dry technology lignin-sludge, make it reach stabilization, innoxious, minimizing, for further recycling lays the first stone, have important practical significance.
Utility model content
Technical problem to be solved in the utility model, just be to provide a kind of system of utilizing the dry municipal sludge of power station recirculated water coupled solar, improve coal power station heat-economy, for municipal sludge, next step carries out recycling (blending burning, agricultural fertilizer, soil improvement agent etc.) and lays the first stone.
Solve the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:
A system of utilizing the dry municipal sludge of power station recirculated water coupled solar, is characterized in that comprising carbonated drink, air and mud three flow processs; Described carbonated drink flow process contains: a condenser, recirculated water, water channel outlet that its water channel import connects Cooling Tower of Power Station 10 outputs are divided into two-way: a road is through air-to-water heat exchanger 9, an other road through mud well heater 1, and both finally access in the original recirculated water circulating line of power plant and send back in cooling tower 10; The exhaust steam that condenser hot vapour source ejects from steam turbine 4; Described air flow process contains: a gas blower 8, air is delivered to successively through pipeline to 6 heating of heat exchanger 9 and solar heat-collection plate are laggard enters fluidized bed dryer 2 heating mud, and finally by crossing fly-ash separator 5, by chimney, enter atmosphere after reaching emission standard; Described mud flow process contains: after the mud of pulverizing through pulverizer enters mud well heater 1, fall into fluidized bed type drier 2 and finally by belt conveyor, be transported to feed bin 3.
The beneficial effects of the utility model are:
(1) heat using in drying sludge process is the low-cost thermals source such as circulating water afterheat and sun power, has saved a large amount of dry energy, has brought considerable economic benefit, has operability in practical engineering application.
(2) in this system, recirculated water does not directly contact mud, and dry air has also passed through fly-ash separator and removed dust, not because sludge-drying produces secondary pollution.
(3) layout of solar energy collector and use, make the air themperature of participating in drying sludge directly can reach higher degree, promote the thermal parameter of whole system, the temperature and pressure that conduct heat in fluidized bed type mud well heater are improved, the degree of drying of mud is also larger, be that dewatering rate is also higher, the work that has promoted this system is exerted oneself and operational efficiency.
(4) thermal parameter of this entire system is below 100 ℃, temperature well below the conventional main drying source of sludge drier, and there is not the high temperature heat source igniting, therefore in whole drying process, can not cause gas spontaneous combustion or detonation in drying plant.Therefore system security reliability is far above sludge drier of the same type.
(5) this system layout is simple, and flow process is short.System heat sources is mainly derived from recirculated water and the sun power of power plant, and electric power plant circulating water amount is large, and the heat of recycling is also larger, has good drying potentiality.So the unit processing power of this system is large, can meet large-scale drying sludge task.
(6) this system is used recirculated water as thermal source sludge-drying, and circulating water temperature will reduce, and therefore for the fired power generating unit of using air cooling system, reduces air cooling system energy consumption, finally reduces condenser condensed water temperature, improves coal-burning power plant's heat-economy; For the fired power generating unit of using seawater, river as water coolant, the temperature of cooling water of final discharge reduces, by the thermal pollution effectively reducing rivers ocean.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram that the utility model system is applicable to Air-cooled Unit.
Number in the figure is expressed as follows: 1, mud well heater; 2, fluidized bed type drier; 3, feed bin; 4, steam turbine; 5, fly-ash separator; 6, solar heat-collection plate; 7, condenser; 8, gas blower; 9, Air-Water interchanger; 10, cooling tower.
Embodiment
The utility model provides a kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar, below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described.
As shown in Figure 1, mud enters mud well heater 1 after crushed, falls into fluidized bed type drier 2 by the higher hot-air dry of temperature after circulating water heating, finally by coal conveyer belt, is sent to feed bin 3, waits until next step the utilization of resources.
The exhaust steam being ejected by steam turbine 4 condenses into water in condenser 7, and heat release is to recirculated water, and recirculated water is heated up, and condensed water completes the carbonated drink flow process of power plant out from condenser 7; Recirculated water is cooling turbine discharge in condenser 7, and the intensification of being simultaneously heated is divided into two-way in condenser outlet 7: a part enters Air-Water interchanger 9, and heating is from the air of gas blower 8; Another part directly enters mud well heater 1 as the main thermal source of mud heating through bypass.The recirculated water of 1 outlet of mud well heater and 9 outlets of Air-Water interchanger converges one, returns to the original recirculated water circulating line of power plant, is sent to cooling tower 10; Air is sent into and in Air-Water interchanger 9, is recycled water and heats by gas blower 8, then enter after the solar heat-collection plate 6 that is arranged in interchanger 9 outlet is heated to higher temperature again and be transported to redrying mud in fluidized bed type drier 2, take away after the moisture in mud, through fly-ash separator, 5 dedustings are reclaimed it and are carried dust, by chimney of electric plant, are discharged in atmosphere.
In system, the heating of primary sludge heating primary air is carried out respectively in circulating water afterheat utilization, primary sludge is heated to be recirculated cooling water and directly in mud well heater 1, mud is carried out to heat temperature raising, and primary air heating is circulating water heating air in Air-Water interchanger 9; In system, drying medium-warm air is delivered in Air-Water interchanger 9 at gas blower, and with the recirculated water heat-shift entering wherein, air is heated for the first time; In solar heat-collection plate 6, air heats for the second time under sun power effect.
System of the present utility model is equally applicable to the fired power generating unit of direct cooling water supply, and its difference is that the recirculated cooling water after dehumidification system is directly discharged among rivers ocean, is not cooling tower 10, and all the other places are all consistent, therefore do not describe in detail at this.
Claims (1)
1. a system of utilizing the dry municipal sludge of power station recirculated water coupled solar, is characterized in that comprising carbonated drink, air and mud three flow processs; Described carbonated drink flow process contains: a condenser (7), recirculated water, water channel outlet that its water channel import connects Cooling Tower of Power Station (10) output are divided into two-way: a road is through air-to-water heat exchanger (9), an other road through mud well heater (1), and two-way finally all accesses in the original recirculated water circulating line of power plant and sends back in cooling tower (10); The exhaust steam that condenser (7) hot vapour source ejects from steam turbine (4); Described air flow process contains: a gas blower (8), air is delivered to heat exchanger (9) and solar heat-collection plate (6) successively through pipeline and heat laggard fluidized bed dryer (2) the heating mud that enters, finally by crossing fly-ash separator (5), by chimney, enter atmosphere after reaching emission standard; Described mud flow process contains: after the mud of pulverizing through pulverizer enters mud well heater (1), fall into fluidized bed type drier (2) and finally by belt conveyor, be transported to feed bin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265838.9U CN203960020U (en) | 2014-05-22 | 2014-05-22 | A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265838.9U CN203960020U (en) | 2014-05-22 | 2014-05-22 | A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203960020U true CN203960020U (en) | 2014-11-26 |
Family
ID=51920629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420265838.9U Expired - Fee Related CN203960020U (en) | 2014-05-22 | 2014-05-22 | A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar |
Country Status (1)
| Country | Link |
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| CN (1) | CN203960020U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045217A (en) * | 2014-05-22 | 2014-09-17 | 广东电网公司电力科学研究院 | Municipal sludge drying system utilizing power plant waste heat coupling solar energy |
| CN106049645A (en) * | 2016-07-05 | 2016-10-26 | 李俊峰 | On-line sludge cleaning system for cooling tower pool in thermal power plant |
| CN115959810A (en) * | 2022-12-05 | 2023-04-14 | 华北电力大学（保定） | Device for drying municipal sludge by indirect air cooling natural ventilation counter-flow cooling tower |
-
2014
- 2014-05-22 CN CN201420265838.9U patent/CN203960020U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045217A (en) * | 2014-05-22 | 2014-09-17 | 广东电网公司电力科学研究院 | Municipal sludge drying system utilizing power plant waste heat coupling solar energy |
| CN106049645A (en) * | 2016-07-05 | 2016-10-26 | 李俊峰 | On-line sludge cleaning system for cooling tower pool in thermal power plant |
| CN115959810A (en) * | 2022-12-05 | 2023-04-14 | 华北电力大学（保定） | Device for drying municipal sludge by indirect air cooling natural ventilation counter-flow cooling tower |
| CN115959810B (en) * | 2022-12-05 | 2024-03-01 | 华北电力大学（保定） | Device for drying municipal sludge by indirect air cooling natural ventilation countercurrent cooling tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 |