CN204555420U - The comprehensive gradient utilization system of steam power plant's used heat - Google Patents
The comprehensive gradient utilization system of steam power plant's used heat Download PDFInfo
- Publication number
- CN204555420U CN204555420U CN201520196272.3U CN201520196272U CN204555420U CN 204555420 U CN204555420 U CN 204555420U CN 201520196272 U CN201520196272 U CN 201520196272U CN 204555420 U CN204555420 U CN 204555420U
- Authority
- CN
- China
- Prior art keywords
- waste heat
- generating set
- heat
- working medium
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
-
- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model embodiment provides the comprehensive gradient utilization system of a kind of steam power plant used heat, this system comprises: waste heat extraction element, one-level low-temperature waste heat generating set, hot water operated absorption refrigerating machine and secondary low-temperature waste heat generating set, waste heat extraction element extracts the used heat of steam power plant, by heat transmission equipment heating heat supply network recirculated water; Heat supply network circulating water heating organic working medium after one-level low-temperature waste heat generating set utilizes heating generates electricity; Heat supply network recirculated water after one-level low-temperature waste heat generating set heating organic working medium is used for being directly user's heat supply; Heat supply network recirculated water after hot water operated absorption refrigerating machine utilizes one-level low-temperature waste heat generating set to heat organic working medium freezes as driving heat source; Heat supply network recirculated water after secondary low-temperature waste heat generating set utilizes one-level low-temperature waste heat generating set to heat organic working medium generates electricity.The program improves Waste Heat Recovery amount, improves energy utilization rate, reduces the Fuel Consumption of steam power plant.
Description
Technical field
The utility model relates to steam power plant generating art field, the particularly comprehensive gradient utilization system of a kind of steam power plant used heat.
Background technology
The waste of current China low-temperature heat source is very serious, and tradition energy rich and influential family extensively exists the phenomenon of low even zero utilization rate of low temperature heat rate.
In existing steam power plant, innovated by fume afterheat comprehensive utilization technique, a large amount of used heat can be extracted from flue gas, extracting heat for heating heat supply network recirculated water, realizing the object of summer cooling, Winter heat supply.But due to seasonal variations and the problem such as customer charge is low, Waste Heat Recovery scale does not reach design load, makes energy utilization rate low.
Utility model content
The utility model embodiment provides the comprehensive gradient utilization system of a kind of steam power plant used heat, to improve Waste Heat Recovery amount, improves energy utilization rate, reduces Fuel Consumption simultaneously.This system comprises: waste heat extraction element, one-level low-temperature waste heat generating set and hot water operated absorption refrigerating machine, and wherein, described waste heat extraction element, for extracting the used heat of steam power plant, by heat transmission equipment heating heat supply network recirculated water; Described one-level low-temperature waste heat generating set is connected by pipeline with described waste heat extraction element, generates electricity for utilizing the heat supply network circulating water heating organic working medium after heating; Heat supply network recirculated water after described one-level low-temperature waste heat generating set heating organic working medium is used for being directly user's heat supply; Described hot water operated absorption refrigerating machine is connected by pipeline with described one-level low-temperature waste heat generating set, and the heat supply network recirculated water after heating organic working medium for utilizing described one-level low-temperature waste heat generating set freezes as driving heat source.
In one embodiment, described one-level low-temperature waste heat generating set, comprising: one-level evaporimeter, for utilizing described hot water, organic working medium heating is produced organic working medium steam; One-level turbine, is connected with described one-level evaporimeter, and described one-level turbine is used for rotating under the promotion of organic working medium steam; One-level generator, is connected with described one-level turbine, and described one-level generator is used for rotating generating under the drive of described one-level turbine.
In one embodiment, described one-level low-temperature waste heat generating set, also comprises: first-stage condenser, is connected with described one-level turbine, for the organic working medium steam after acting is cooled to liquid organic working medium; One-level working medium pump, is connected with described first-stage condenser and described one-level evaporimeter, for beating the liquid organic working medium in described first-stage condenser in described one-level evaporimeter.
In one embodiment, also comprise: secondary low-temperature waste heat generating set, be connected by pipeline with described one-level low-temperature waste heat generating set, the heat supply network recirculated water after heating organic working medium for utilizing described one-level low-temperature waste heat generating set generates electricity to the organic working medium heated in this secondary low-temperature waste heat generating set.
In one embodiment, described heat transmission equipment comprises: dividing wall type heat exchanger, direct-contact heat exchanger, heat pump one of them.
In one embodiment, the used heat of described steam power plant is the heat in boiler tail flue gas.
In one embodiment, described one-level low-temperature waste heat generating set is connected with recirculating cooling water system in steam power plant with described hot water operated absorption refrigerating machine, realizes recirculating cooling water system and shares.
In the utility model embodiment, the used heat of steam power plant is extracted by waste heat extraction element, and the waste heat heat supply network recirculated water of steam power plant is utilized by heat transmission equipment, heat supply network recirculated water after one-level low-temperature waste heat generating set can utilize this heating generates electricity, be that electric energy utilizes by thermal power transfer, heat supply network recirculated water after simultaneously heating organic working medium in one-level low-temperature waste heat generating set power generation process can also be directly user's heat supply and/or be utilized by hot water operated absorption refrigerating machine, such as, during summer, the heat supply network recirculated water after heating organic working medium again can be utilized to freeze by hot water operated absorption refrigerating machine, time in the winter time, the heat supply network recirculated water after heating organic working medium can be directly again utilized to come for user's heat supply, heat can also be had user simultaneously, during cold demand, come for while user's heat supply by the heat supply network recirculated water after heating organic working medium, freezed by the heat supply network recirculated water after hot water operated absorption refrigerating machine utilizes heating organic working medium again, for user's cooling.Namely, while meeting hot and cold, the electric demand of user, achieve the comprehensive cascade utilization of steam power plant's used heat, the optimum allocation of energy form, thus improve Waste Heat Recovery amount, improve energy utilization rate, reduce the Fuel Consumption of steam power plant simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a application's part, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structure chart of a kind of steam power plant waste heat utilization system that the utility model embodiment provides.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment and accompanying drawing, the utility model is described in further details.At this, exemplary embodiment of the present utility model and illustrating for explaining the utility model, but not as to restriction of the present utility model.
In the utility model embodiment, provide a kind of steam power plant waste heat utilization system, as shown in Figure 1, this system comprises:
Waste heat extraction element 101, one-level low-temperature waste heat generating set 102 and hot water operated absorption refrigerating machine 103, wherein,
Described waste heat extraction element 101, for extracting the used heat of steam power plant, by heat transmission equipment heating heat supply network recirculated water;
Described one-level low-temperature waste heat generating set 102 is connected by pipeline with described waste heat extraction element 101, generates electricity for utilizing the heat supply network circulating water heating organic working medium after heating;
Heat supply network recirculated water after described one-level low-temperature waste heat generating set heating organic working medium is used for being directly user's heat supply; Such as, the heat supply network recirculated water after described one-level low-temperature waste heat generating set heating organic working medium flows in heating equipment 104 by pipeline, is user's heat supply;
Described hot water operated absorption refrigerating machine 103 is connected by pipeline with described one-level low-temperature waste heat generating set 102, and the heat supply network recirculated water after heating organic working medium for utilizing described one-level low-temperature waste heat generating set freezes as driving heat source.
Known as shown in Figure 1, in the utility model embodiment, the used heat of steam power plant is extracted by waste heat extraction element, and the waste heat heat supply network recirculated water of steam power plant is utilized by heat transmission equipment, heat supply network recirculated water after one-level low-temperature waste heat generating set can utilize this heating generates electricity, be that electric energy utilizes by thermal power transfer, heat supply network recirculated water after simultaneously heating organic working medium in one-level low-temperature waste heat generating set power generation process can also be directly user's heat supply and/or be utilized by hot water operated absorption refrigerating machine, such as, during summer, the heat supply network recirculated water after heating organic working medium again can be utilized to freeze by hot water operated absorption refrigerating machine, time in the winter time, the heat supply network recirculated water after heating organic working medium can be directly again utilized to come for user's heat supply, heat can also be had user simultaneously, during cold demand, come for while user's heat supply by the heat supply network recirculated water after heating organic working medium, freezed by the heat supply network recirculated water after hot water operated absorption refrigerating machine utilizes heating organic working medium again, for user's cooling.Namely, while meeting hot and cold, the electric demand of user, achieve the comprehensive cascade utilization of steam power plant's used heat, the optimum allocation of energy form, thus improve Waste Heat Recovery amount, improve energy utilization rate, reduce the Fuel Consumption of steam power plant simultaneously.
During concrete enforcement, as shown in Figure 1, above-mentioned one-level low-temperature waste heat generating set 102 can comprise with lower component to realize generating; One-level evaporimeter 1021, produces organic working medium steam for utilizing the heat supply network recirculated water after heating by organic working medium heating; One-level turbine 1023, is connected with described one-level evaporimeter 1021, and described one-level turbine is used for rotating under the promotion of organic working medium steam; One-level generator 1024, is connected with described one-level turbine 1023, and described one-level generator is used for rotating generating under the drive of described one-level turbine.
Utilization is cycled to repeat, in the present embodiment, as shown in Figure 1 in order to what realize organic working medium, above-mentioned one-level low-temperature waste heat generating set 102, also comprise: first-stage condenser 1022, be connected with described one-level turbine 1023, for the organic working medium steam after acting is cooled to liquid organic working medium; One-level working medium pump (not shown), is connected with described first-stage condenser 1022 and described one-level evaporimeter 1021, for beating the liquid organic working medium in described first-stage condenser in described one-level evaporimeter.
During concrete enforcement, as shown in Figure 1, passing through waste heat extraction element from steam power plant's used heat (such as, fume afterheat) extract about 19MW heat, can be then 120 DEG C by heat supply network circulating water heating, first this heat supply network recirculated water of 120 DEG C can utilize one-level low-temperature waste heat generating set to carry out one-level generating; Heat supply network recirculated water after one-level generating may be cooled to 85 DEG C (namely heating the heat supply network recirculated water after organic working medium), this heat supply network recirculated water water of 85 DEG C can also be used for refrigeration or heat supply according to Various Seasonal and user's request, realizes the comprehensive cascade utilization of the energy, optimizes and distribute.Concrete, in order to can fully recovering waste heat further, according to the quality of used heat and the load difference of cold and hot user, one or more levels generating can be carried out, such as, in the present embodiment, to meet user cold, while heat demand, the used heat (i.e. above-mentioned 85 DEG C of heat supply network recirculated waters) after once generating can also be utilized to carry out secondary generating, as shown in Figure 1, above-mentioned steam power plant waste heat utilization system, also comprise: secondary low-temperature waste heat generating set 105, be connected by pipeline with described one-level low-temperature waste heat generating set 102, heat supply network recirculated water after heating organic working medium for utilizing described one-level low-temperature waste heat generating set generates electricity to the organic working medium heated in this secondary low-temperature waste heat generating set.
Concrete, the structure composition of above-mentioned secondary low-temperature waste heat generating set 105 can form identical with the structure of above-mentioned one-level low-temperature waste heat generating set 102, as shown in Figure 1, secondary low-temperature waste heat generating set 105 comprises: secondary evaporimeter 1051, heats the heat supply network recirculated water after organic working medium the organic working medium heating in this secondary evaporimeter is produced organic working medium steam for utilizing described one-level low-temperature waste heat generating set; Secondary turbine 1053, is connected with described secondary evaporimeter 1051, and described secondary turbine is used for rotating under the promotion of organic working medium steam; Secondary generator 1054, is connected with described secondary turbine 1053, and described secondary generator is used for rotating generating under the drive of described secondary turbine.
Also for ease of realize organic working medium be cycled to repeat utilization, in the present embodiment, as shown in Figure 1, above-mentioned secondary low-temperature waste heat generating set 105, also comprise: secondary condenser 1052, be connected with described secondary turbine 1053, for the organic working medium steam after acting is cooled to liquid organic working medium; Secondary working medium pump (not shown), is connected with described secondary condenser 1052 and described secondary evaporimeter 1051, for beating the liquid organic working medium in described secondary condenser in described secondary evaporimeter
During concrete enforcement, above-mentioned hot water operated absorption refrigerating machine 103 can adopt lithium-bromide solution to be absorbent.
During concrete enforcement, in order to fully reclaim steam power plant's used heat and utilize, in the present embodiment, the used heat of above-mentioned steam power plant is the heat in boiler tail flue gas.Concrete, after extracting the heat in boiler tail flue gas by waste heat extraction element, heat heat supply network recirculated water by heat transmission equipments such as dividing wall type heat exchanger, direct-contact heat exchanger or heat pumps.
During concrete enforcement, in order to save initial cost, save space, in the present embodiment, described one-level low-temperature waste heat generating set is connected with recirculating cooling water system in steam power plant with described hot water operated absorption refrigerating machine, realize recirculating cooling water system public, concrete, above-mentioned secondary low-temperature waste heat generating set also can be connected with Circulating Cooling Water of Power Plant system, realizes cooling water public.
During concrete enforcement, above-mentioned one-level low-temperature waste heat generating set and secondary low-temperature waste heat generating set can adopt 6 kilovoltage grades, access steam power plant using electricity system.
In the utility model embodiment, the used heat of steam power plant is extracted by waste heat extraction element, and the waste heat heat supply network recirculated water of steam power plant is utilized by heat transmission equipment, heat supply network recirculated water after one-level low-temperature waste heat generating set can utilize this heating generates electricity, be that electric energy utilizes by thermal power transfer, heat supply network recirculated water after simultaneously heating organic working medium in one-level low-temperature waste heat generating set power generation process can also be directly user's heat supply and/or be utilized by hot water operated absorption refrigerating machine, such as, during summer, the heat supply network recirculated water after heating organic working medium again can be utilized to freeze by hot water operated absorption refrigerating machine, time in the winter time, the heat supply network recirculated water after heating organic working medium can be directly again utilized to come for user's heat supply, heat can also be had user simultaneously, during cold demand, come for while user's heat supply by the heat supply network recirculated water after heating organic working medium, freezed by the heat supply network recirculated water after hot water operated absorption refrigerating machine utilizes heating organic working medium again, for user's cooling.Namely, while meeting hot and cold, the electric demand of user, achieve the comprehensive cascade utilization of steam power plant's used heat, the optimum allocation of energy form, thus improve Waste Heat Recovery amount, improve energy utilization rate, reduce the Fuel Consumption of steam power plant simultaneously.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model embodiment can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. the comprehensive gradient utilization system of steam power plant's used heat, is characterized in that, comprising: waste heat extraction element, one-level low-temperature waste heat generating set and hot water operated absorption refrigerating machine, wherein,
Described waste heat extraction element, for extracting the used heat of steam power plant, by heat transmission equipment heating heat supply network recirculated water;
Described one-level low-temperature waste heat generating set is connected by pipeline with described waste heat extraction element, generates electricity for utilizing the heat supply network circulating water heating organic working medium after heating;
Heat supply network recirculated water after described one-level low-temperature waste heat generating set heating organic working medium is used for being directly user's heat supply;
Described hot water operated absorption refrigerating machine is connected by pipeline with described one-level low-temperature waste heat generating set, and the heat supply network recirculated water after heating organic working medium for utilizing described one-level low-temperature waste heat generating set freezes as driving heat source.
2. the system as claimed in claim 1, is characterized in that, described one-level low-temperature waste heat generating set, comprising:
One-level evaporimeter, produces organic working medium steam for utilizing the heat supply network recirculated water after heating by organic working medium heating;
One-level turbine, is connected with described one-level evaporimeter, and described one-level turbine is used for rotating under the promotion of organic working medium steam;
One-level generator, is connected with described one-level turbine, and described one-level generator is used for rotating generating under the drive of described one-level turbine.
3. system as claimed in claim 2, it is characterized in that, described one-level low-temperature waste heat generating set, also comprises:
First-stage condenser, is connected with described one-level turbine, for the organic working medium steam after acting is cooled to liquid organic working medium;
One-level working medium pump, is connected with described first-stage condenser and described one-level evaporimeter, for beating the liquid organic working medium in described first-stage condenser in described one-level evaporimeter.
4. system as claimed any one in claims 1 to 3, is characterized in that, also comprise:
Secondary low-temperature waste heat generating set, be connected by pipeline with described one-level low-temperature waste heat generating set, the heat supply network recirculated water after heating organic working medium for utilizing described one-level low-temperature waste heat generating set generates electricity to the organic working medium heated in this secondary low-temperature waste heat generating set.
5. as claimed any one in claims 1 to 3 system, it is characterized in that, described heat transmission equipment comprises: dividing wall type heat exchanger, direct-contact heat exchanger, heat pump one of them.
6. system as claimed any one in claims 1 to 3, it is characterized in that, the used heat of described steam power plant is the heat in boiler tail flue gas.
7. system as claimed any one in claims 1 to 3, it is characterized in that, described one-level low-temperature waste heat generating set is connected with recirculating cooling water system in steam power plant with described hot water operated absorption refrigerating machine, realizes recirculating cooling water system and shares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520196272.3U CN204555420U (en) | 2015-04-02 | 2015-04-02 | The comprehensive gradient utilization system of steam power plant's used heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520196272.3U CN204555420U (en) | 2015-04-02 | 2015-04-02 | The comprehensive gradient utilization system of steam power plant's used heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204555420U true CN204555420U (en) | 2015-08-12 |
Family
ID=53830521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520196272.3U Expired - Fee Related CN204555420U (en) | 2015-04-02 | 2015-04-02 | The comprehensive gradient utilization system of steam power plant's used heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204555420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099743A (en) * | 2018-07-02 | 2018-12-28 | 东南大学 | A kind of multi-heat source residual neat recovering system |
| CN109707472A (en) * | 2019-02-28 | 2019-05-03 | 东北大学 | A kind of distributed energy resource system using dry coke quenching waste heat |
-
2015
- 2015-04-02 CN CN201520196272.3U patent/CN204555420U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099743A (en) * | 2018-07-02 | 2018-12-28 | 东南大学 | A kind of multi-heat source residual neat recovering system |
| CN109099743B (en) * | 2018-07-02 | 2020-06-30 | 东南大学 | Multi-heat-source waste heat recovery system |
| CN109707472A (en) * | 2019-02-28 | 2019-05-03 | 东北大学 | A kind of distributed energy resource system using dry coke quenching waste heat |
| CN109707472B (en) * | 2019-02-28 | 2021-10-22 | 东北大学 | Distributed energy system utilizing dry quenching waste heat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102198868B1 (en) | Electric power peak-shaving and combined heat and power waste heat recovery device and operation method thereof | |
| CN106765448A (en) | A kind of energy-saving heating system for reducing heat supply return water temperature | |
| CN106705185A (en) | Energy-saving heat supply system with function of reducing temperature of heat supply return water | |
| CN203757825U (en) | Heat supply unit with compression heat pump and water heating device combined | |
| CN204552850U (en) | The novel heat-power cogeneration system combined that card Linne circulates and flash distillation circulates | |
| CN202419765U (en) | Circulating water cooling heating apparatus of turbine condenser in thermal power plant | |
| CN104697238A (en) | Energy storage type thermoelectric combined cooling and power device suitable for active power distribution network and running method of energy storage type thermoelectric combined cooling and power device | |
| CN204006255U (en) | A kind of waste heat recovery central heating system | |
| CN104197397A (en) | Energy-saving heat supply system for decreasing temperature of heating return water and recovering waste heat of thermal power plant | |
| CN106839513A (en) | Electric power plant circulating water residual heat pump utilizes the energy conserving system combined with natural water accumulation of heat | |
| CN104481611A (en) | Dead steam waste heat recovery system based on large temperature difference heat exchange technology | |
| CN103075841A (en) | Novel low-temperature combined cooling, heating and power (CCHP) system based on heat pump | |
| CN201964501U (en) | Thermal pump heating system utilizing latent heat progressively | |
| CN104806309A (en) | Air cooling island condensed water potential energy utilizing system | |
| CN204115055U (en) | Reduce the energy-saving heating system of heat supply return water temperature and recovery steam power plant waste heat | |
| CN204648753U (en) | A kind of trilogy supply and heat pump UTILIZATION OF VESIDUAL HEAT IN coupled system | |
| CN202158689U (en) | Comprehensive recycling system for flue gas waste heat and condensing waste heat of thermal power plant | |
| CN101968236A (en) | System for realizing combined heating based on extraction steam for heating and lithium bromide unit | |
| CN102809144B (en) | Device and method for using two-stage jet absorption heat pump to improve thermal cycle efficiency | |
| CN105736262A (en) | Solar-assisted geothermal power generation system | |
| CN204555420U (en) | The comprehensive gradient utilization system of steam power plant's used heat | |
| CN201779751U (en) | Heating system combining lithium bromide machine set with heating steam bleeding | |
| CN203286757U (en) | Water source heat pump waste heat recycling device | |
| CN202012456U (en) | Solar heating low boiling point working medium screw expanding power system | |
| CN204730508U (en) | A kind ofly apply the energy-conservation device of lithium bromide |
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 |
Granted publication date: 20150812 Termination date: 20200402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |