CN214464459U - Deep waste heat utilization system of integrated organic Rankine cycle waste incineration power station - Google Patents
Deep waste heat utilization system of integrated organic Rankine cycle waste incineration power station Download PDFInfo
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- CN214464459U CN214464459U CN202022854055.2U CN202022854055U CN214464459U CN 214464459 U CN214464459 U CN 214464459U CN 202022854055 U CN202022854055 U CN 202022854055U CN 214464459 U CN214464459 U CN 214464459U
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- rankine cycle
- organic rankine
- waste incineration
- waste
- incineration power
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- 238000004056 waste incineration Methods 0.000 title claims abstract description 55
- 239000002918 waste heat Substances 0.000 title claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 29
- 238000010248 power generation Methods 0.000 claims abstract description 21
- 239000006096 absorbing agent Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000000779 smoke Substances 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000010813 municipal solid waste Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002910 solid waste 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses an integrated organic Rankine cycle's msw incineration power plant degree of depth waste heat utilization system belongs to msw incineration power generation technical field, mainly includes msw incineration power generation system, flue gas processing system, organic Rankine cycle waste heat utilization system. The flue gas from the tail of the waste incineration boiler sequentially passes through a flue gas purifier and a bag-type dust collector and then enters a heat absorber to heat the organic working medium of the organic Rankine cycle, and the organic working medium heated into steam then enters an organic Rankine cycle turbine to expand and do work. A condenser of the waste incineration power generation system and a condenser of the organic Rankine cycle waste heat utilization system share one cooling tower. The utility model discloses utilize organic rankine cycle, effectively retrieve boiler afterbody flue gas waste heat, increase the unit generated energy, improve unit efficiency.
Description
Technical Field
The utility model belongs to the technical field of msw incineration power generation, in particular to integrated organic rankine cycle's msw incineration power plant degree of depth waste heat utilization system.
Background
With the rapid development of national economy and the increasing improvement of the living standard of people, the domestic garbage is increased gradually, and the dilemma of 'garbage enclosing city' is highlighted. Along with the increase of the requirements of people on the environment, the call for reasonably classifying and recycling the garbage is gradually increased, and the reasonable treatment of the garbage plays an increasingly important role in practicing a green development idea and promoting the ecological civilization construction process. At present, the treatment mode of the household garbage has three types: direct incineration, sanitary landfills and composting. Compared with landfill which is easy to cause secondary pollution and waste compost which is difficult to sell, the household garbage incineration power generation technology is gradually a mainstream way for treating household garbage in China as a method for utilizing solid waste resources. The waste incineration power generation mainly utilizes heat emitted by waste combustion to heat water to obtain superheated steam, and the superheated steam expands to do work to push a steam turbine to rotate so as to drive a generator to generate power. For a waste incineration power plant with daily waste treatment capacity larger than 330t/d, the efficiency of a waste incineration boiler is about 70-78%, the efficiency of a steam turbine is about 28-30.6%, the efficiency of a generator is about 97%, and the total power generation efficiency of the waste incineration power plant is 18-23%. According to the data, the power generation efficiency of the waste incineration power station is low. From this, integrate waste incineration power plant and organic rankine cycle, be expected to realize the effective recycle of the produced flue gas waste heat of waste incineration, and then solve the problem that waste incineration power plant efficiency is on the low side.
Some organics have a boiling point lower than that of water at one atmosphere, but can produce steam at a very high pressure. The organic Rankine cycle is to utilize the characteristic of low-boiling-point organic working medium to absorb heat of a low-temperature heat source to heat the working medium, so that steam with higher pressure is generated to push a turbine expander or a screw expander to do work. Therefore, compared with the traditional power generation technology, the organic Rankine cycle power generation technology has obvious advantages in the field of low-temperature waste heat power recovery. When the temperature of a heat source is 100-300 ℃ and the installed capacity is 0.2-2 MW, the power generation efficiency of the organic Rankine cycle generator set can reach 15% -24%. The organic Rankine cycle power generation system is simple in core equipment structure, and the manufacturing cost and the operating cost of the power station are low. In addition, the organic working medium (such as R134a, n-pentane and the like) used by the organic Rankine cycle has higher density, the corresponding turbomachine has smaller size, and the system has compact structure.
The existing waste incineration power plant has small scale and low power generation efficiency, but the power generation system of the existing waste incineration power plant has high completeness, complete equipment configuration and a series of equipment such as a boiler, a steam turbine, a generator, a flue gas treatment device and the like, so that the investment cost of the waste incineration power plant is high, the unit investment is about 1.8-2.2 ten thousand/kW, and the operation and maintenance cost after the waste incineration power plant is built is huge. Therefore, the waste incineration power station and the organic Rankine cycle are integrated, and the waste incineration power station and the organic Rankine cycle share the circulating water system in the cooling tower, so that the equipment cost is saved, the utilization efficiency of heat generated by waste incineration can be improved, and remarkable economic benefits are brought.
Disclosure of Invention
The utility model provides an integrated organic rankine cycle's msw incineration power plant degree of depth waste heat utilization system, it includes msw incineration power generation system, flue gas processing system, organic rankine cycle waste heat utilization system.
The waste incineration power generation system comprises a waste incineration boiler, a steam turbine, a condenser, a heat regeneration system, a waste incineration power station generator and the like; superheated steam from the waste incineration boiler enters a steam turbine to push a steam turbine rotor to rotate to do work and drive a waste incineration power station generator to generate power; the steam which does work enters a condenser to exchange heat with circulating water from a cooling tower for condensation, and the condensed water sequentially passes through a condensed water pump, a regenerative heater, a deaerator and a water feeding pump and finally flows into a boiler water feeding pipeline.
The flue gas treatment system comprises a flue gas purifier, a bag-type dust collector and a chimney; the boiler tail pipeline is connected with a smoke purifier and a bag-type dust collector, smoke sequentially enters a heat absorber to exchange heat with organic working media, and the smoke after heat exchange is discharged into the atmosphere through a chimney.
The organic Rankine cycle waste heat utilization system comprises a heat absorber, an organic Rankine cycle turbine, an organic Rankine cycle generator, a condenser and a working medium pump; the organic working medium heated by the flue gas in the heat absorber enters an organic Rankine cycle turbine to expand and do work to drive an organic Rankine cycle generator to generate power; the organic working medium steam which does work enters a condenser and exchanges heat with circulating water from a cooling tower for condensation; the condensed organic working medium is sent into the heat absorber through the working medium pump to continue to absorb the residual heat of the flue gas.
The utility model has the advantages that:
1. the utility model discloses integrate waste incineration power plant and organic rankine cycle, effectively retrieve the waste heat of waste incineration boiler afterbody flue gas through the heat absorber, be used for as the heat source of heating organic working medium, make organic working medium can the circulation acting. The integrated system increases the total generated energy and improves the energy utilization efficiency under the condition of unchanged waste incineration amount.
2. The waste incineration power station and the organic Rankine cycle waste heat utilization system share one cooling tower, the circulating water pipelines are connected in parallel and respectively flow into a condenser of the waste incineration power station and a condenser of the organic Rankine cycle waste heat utilization system, and therefore the equipment investment cost is saved.
Drawings
FIG. 1 is a deep waste heat utilization system of a waste incineration power station integrated with organic Rankine cycle.
In the figure: 1-a waste incineration boiler; 2-a steam turbine; 3-a condenser; 4-a condensate pump; 5-a regenerative heater; 6-a deaerator; 7-a feed pump; 8-a waste incineration plant generator; 9-a flue gas purifier; 10-bag dust collector; 11-a heat absorber; 12-a chimney; 13-an organic rankine cycle turbine; 14-an organic rankine cycle generator; 15-a condenser; 16-working medium pump; 17-a circulating water pump; 18-cooling tower.
Detailed Description
The utility model provides an integrated organic rankine cycle's waste incineration power plant degree of depth waste heat utilization system, combine the figure and the detailed description mode to do further explanation to this system theory of operation below.
FIG. 1 is a schematic diagram of a waste incineration power station deep waste heat utilization system integrating an organic Rankine cycle. The system is used in a waste incineration power station, and comprises a waste incineration power generation system, a flue gas treatment system and an organic Rankine cycle waste heat utilization system, and is characterized in that the waste incineration power generation system comprises a waste incineration boiler 1, a steam turbine 2, a condenser 3, a heat regeneration system, a waste incineration power station generator 8 and the like; superheated steam from the waste incineration boiler 1 enters a steam turbine 2 to push a rotor of the steam turbine 2 to rotate and do work, and a generator 8 of a waste incineration power station is driven to generate electricity; the steam which has done work enters a condenser 3, exchanges heat with circulating water from a cooling tower 18 for condensation, and the condenser 3 is sequentially connected with a condensate pump 4, a regenerative heater 5, a deaerator 6 and a water feed pump 7 and is finally connected to a boiler water feed pipeline. The flue gas treatment system comprises a flue gas purifier 9, a bag-type dust collector 10 and a chimney 12; the boiler tail pipeline is connected with a smoke purifier 9 and a bag-type dust collector 10, smoke sequentially enters a heat absorber 11 to exchange heat with organic working media, and the smoke after heat exchange is discharged into the atmosphere through a chimney 12. The organic Rankine cycle waste heat utilization system comprises a heat absorber 11, an organic Rankine cycle turbine 13, an organic Rankine cycle generator 14, a condenser 15 and a working medium pump 16; the organic working medium heated by the flue gas in the heat absorber 11 enters an organic Rankine cycle turbine 13 to expand and do work, so that an organic Rankine cycle generator 14 is driven to generate power; the organic working medium steam which does work enters a condenser 15 to exchange heat with circulating water from a cooling tower 18 for condensation; the condensed organic working medium is sent into the heat absorber 11 through the working medium pump 16 to continuously absorb the residual heat of the flue gas.
The working process is as follows:
superheated steam from the waste incineration boiler 1 enters the steam turbine 2 to push a steam turbine rotor to rotate to do work, and the waste incineration power station generator 8 is driven to generate power. The steam which does work enters the condenser 3 to exchange heat with circulating water from the cooling tower 18 for condensation, and the condensed water enters a boiler water supply pipeline after passing through the condensed water pump 4, the regenerative heater 5, the deaerator 6 and the water supply pump 7 in sequence. Flue gas at about 190 ℃ coming out from the tail part of the waste incineration boiler 1 sequentially passes through the flue gas purifier 9 and the bag-type dust remover 10, and the temperature is reduced to about 140-150 ℃. The flue gas enters the heat absorber 11 to exchange heat with the organic working medium. At this time, the temperature of the flue gas is reduced to about 90 ℃, and the flue gas enters a chimney 12 and is discharged to the atmosphere. The organic working medium heated into steam in the heat absorber 11 enters an organic Rankine cycle turbine 13 to expand and do work, and an organic Rankine cycle generator 14 is driven to generate power. The organic working medium steam which does work enters a condenser 15 to exchange heat with circulating water from a cooling tower 18 for condensation, and then is sent back to the heat absorber 11 by a working medium pump 16 to continuously absorb the residual heat of the flue gas.
The present embodiment is merely illustrative of the present patent and does not limit the scope of the patent, and modifications can be made to the details thereof without departing from the spirit and scope of the patent.
Claims (4)
1. A deep waste heat utilization system of a waste incineration power station integrated with organic Rankine cycle mainly comprises a waste incineration power generation system, a flue gas treatment system and an organic Rankine cycle waste heat utilization system; the waste incineration power generation system and the organic Rankine cycle waste heat utilization system are integrated through a heat absorber (11).
2. The integrated organic Rankine cycle waste incineration power plant deep waste heat utilization system according to claim 1, characterized in that the waste incineration power generation system comprises a waste incineration boiler (1), a steam turbine (2), a condenser (3), a regenerative system and a waste incineration power plant generator (8); superheated steam from the waste incineration boiler (1) enters a steam turbine (2) to push a steam turbine rotor to rotate and do work, and a waste incineration power station generator (8) is driven to generate electricity; the steam which does work enters a condenser (3) to exchange heat and condense with circulating water from a cooling tower (18), the condenser (3) is sequentially connected with a condensate pump (4), a regenerative heater (5), a deaerator (6) and a water feeding pump (7), and finally a boiler water feeding pipeline is connected.
3. The integrated organic Rankine cycle waste incineration power plant deep waste heat utilization system according to claim 1, characterized in that the flue gas treatment system comprises a flue gas purifier (9), a bag-type dust collector (10) and a chimney (12); the boiler tail pipeline is connected with a smoke purifier (9) and a bag-type dust collector (10), smoke sequentially enters a heat absorber (11) to exchange heat with organic working media, and the smoke after heat exchange is discharged into the atmosphere through a chimney (12).
4. The integrated organic Rankine cycle waste incineration power plant deep waste heat utilization system according to claim 1, characterized in that the organic Rankine cycle waste heat utilization system comprises a heat absorber (11), an organic Rankine cycle turbine (13), an organic Rankine cycle generator (14), a condenser (15) and a working medium pump (16); the organic working medium heated by the flue gas in the heat absorber (11) enters an organic Rankine cycle turbine (13) to do work through expansion, and an organic Rankine cycle generator (14) is driven to generate power; the organic working medium steam which does work enters a condenser (15) to exchange heat with circulating water from a cooling tower (18) for condensation; the condensed organic working medium is sent into the heat absorber (11) through the working medium pump (16) to continuously absorb the residual heat of the flue gas.
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| CN202022854055.2U CN214464459U (en) | 2020-12-02 | 2020-12-02 | Deep waste heat utilization system of integrated organic Rankine cycle waste incineration power station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165792A (en) * | 2021-12-09 | 2022-03-11 | 中国华能集团清洁能源技术研究院有限公司 | Waste heat utilization device and method for garbage incinerator slag by coupling plasma cracking |
| WO2023226145A1 (en) * | 2022-05-23 | 2023-11-30 | 苏州西热节能环保技术有限公司 | Cooling system of photovoltaic power station coupled to waste incineration power station and control method therefor |
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2020
- 2020-12-02 CN CN202022854055.2U patent/CN214464459U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165792A (en) * | 2021-12-09 | 2022-03-11 | 中国华能集团清洁能源技术研究院有限公司 | Waste heat utilization device and method for garbage incinerator slag by coupling plasma cracking |
| CN114165792B (en) * | 2021-12-09 | 2023-06-16 | 中国华能集团清洁能源技术研究院有限公司 | Device and method for utilizing waste heat of garbage incinerator slag by coupling plasma pyrolysis |
| WO2023226145A1 (en) * | 2022-05-23 | 2023-11-30 | 苏州西热节能环保技术有限公司 | Cooling system of photovoltaic power station coupled to waste incineration power station and control method therefor |
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Granted publication date: 20211022 |