CN206160174U - Afterheat recycling device with air conditioner filters and waste water purification performance - Google Patents
Afterheat recycling device with air conditioner filters and waste water purification performance Download PDFInfo
- Publication number
- CN206160174U CN206160174U CN201621197310.8U CN201621197310U CN206160174U CN 206160174 U CN206160174 U CN 206160174U CN 201621197310 U CN201621197310 U CN 201621197310U CN 206160174 U CN206160174 U CN 206160174U
- Authority
- CN
- China
- Prior art keywords
- waste water
- filtration case
- evaporative
- evaporative filtration
- flue gas
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses an afterheat recycling device with air conditioner filters and waste water purification performance, including the evaporation rose box, the inside intermediate position fixedly connected with baffle of evaporation rose box, the beneficial effects of the utility model are that: the flue gas spills over from evaporate the waste water in the rose box, absorption through chemical industry carbon filtration net and ultraviolet emitter, bactericidal effect, granule impurity such as the dust in the flue gas are adsorbed by waste water with some water -soluble harmful gas, heat in the flue gas also transmits the waste water for being arranged in the evaporation rose box, the condenser heats waste water, it is located inside the evaporation rose box to form steam, partly steam condensate becomes the liquid water -infusion to the cooling cylinder in, remaining steam and filtration, in gas after disinfecting also enters into the cooling cylinder through inclined pipeline, the utility model discloses simple structure can discharge novel structure, design benefit through absorption and bactericidal effect with the flue gas again.
Description
Technical field
The utility model is related to a kind of waste-heat recovery device, specifically a kind of with air conditioning filter and waste water purification function
Waste heat recovery device.
Background technology
All can need and the substantial amounts of flue gas of discharge and substantial amounts of waste water because of manufacturing in some factories, flue gas is gas
The mixture of body and flue dust, is also the main cause for polluting residential block air, and flue gas includes sulfur dioxide, nitrogen, an oxidation
Carbon, carbon dioxide and oxynitrides etc., flue dust includes dust, coal grain and high-temperature split product of fuel etc., therefore cigarette
Pollution of the gas to environment is the combined pollution of various poisonous substances, and flue dust is relevant to the harmfulness of human body and the size of particle, to human body
It is floating dust of the diameter less than 10 microns to produce the mostly of harm, especially maximum with the floating dust harmfulness of 1-2.5 microns, but in water just
Energy adsorption particle dust and some pernicious gases, but adsorb excessively waste water resource using water purification, it is therefore desirable to and one kind is useless
Water adsorbs smoke dust and pernicious gas, and makes the device of Sewage treatment recycling by fume afterheat etc..
Utility model content
The purpose of this utility model is to provide a kind of heat recovery with air conditioning filter and waste water purification function
Device, to solve the problems, such as above-mentioned background technology in propose.
For achieving the above object, the utility model provides following technical scheme：
A kind of waste heat recovery device with air conditioning filter and waste water purification function, including evaporative filtration case, it is described
The bosom position of evaporative filtration case is fixedly connected with dividing plate, and the inside of dividing plate offers flue gas breather line, dividing plate it is upper
Portion offers some flue gas ventholes, and the bottom of dividing plate offers waste water through hole, on the left side wall body of the evaporative filtration case
High pressure positive blower is installed, the air inlet of high pressure positive blower is connected smoke inlet pipe road, the air outlet of high pressure positive blower and the flue gas
Breather line is connected, and the top of dividing plate is provided with chemical industry carbon filtration net, and chemical industry carbon filtration net is mutually fixed with the inwall of evaporative filtration case
Connection, the top of chemical industry carbon filtration net is provided with actinolyte, and actinolyte is arranged on the left and right sides of evaporative filtration case
Inwall, portion offers waste water ventilating water pipe, the right output port and evaporative filtration of waste water ventilating water pipe in the upper wall body of evaporative filtration case
The left side wall body of case is connected by waste water conveyance conduit, the lower port of waste water conveyance conduit be located at chemical industry carbon filtration net and dividing plate it
Between；The bottom of the evaporative filtration case is installed with condenser, and the top of condenser is provided with inclination filter screen, incline filter screen with
The inwall of evaporative filtration case is mutually fixedly connected, and cooling cylinder, the inner lower of cooling cylinder are provided with the left of the evaporative filtration case
Evaporimeter is installed with, upper end of evaporator mouth is connected with the upper port of condenser by upper pipeline, and upper Pipe installing has
Expansion valve, the lower port of evaporimeter is connected with the lower port of condenser by lower pipeline, and lower pipeline is provided with compressor, condensation
The inside of case is connected with the inside of evaporative filtration case by tilted tube, and the top positioned at the tilted tube of evaporative filtration case is opened
Air inlet is provided with, positioned at the bottom of the tilted tube of cooling cylinder gas outlet is offered, portion consolidates in the upper side wall body of the cooling cylinder
Surely it is connected with sponge.
As further program of the utility model：The dividing plate semicircular in shape.
As the utility model further scheme：The upper wall body of the evaporative filtration case is hemispherical.
As the utility model further scheme：The left end of the waste water ventilating water pipe is connected wastewater inlet pipe
Road.
As the utility model further scheme：The right side wall body of the evaporative filtration case is connected blow-off line,
Blow-off line is arranged and the top for inclining filter screen, and flow control valve is provided with blow-off line.
As the utility model further scheme：The left side wall body bottom of the cooling cylinder is connected condensate pipe
Road.
Compared with prior art, the beneficial effects of the utility model are：Overflow in waste water of the flue gas from evaporative filtration case,
Again by after the absorption of chemical industry carbon filtration net and actinolyte, bactericidal action be located at evaporative filtration case in, the ash in flue gas
The pernicious gas that the granule foreigns such as dirt are dissolved in water with some is adsorbed by waste water, and the heat in flue gas is also passed to be located at evaporative filtration
In waste water in case, condenser is heated waste water, is formed steam and is located inside evaporative filtration case, and a part of steam is condensed into
Liquid water is injected into cooling cylinder, and the gas after remaining steam and filtration, sterilization enters into cooling cylinder also by tilted tube
Interior, the steam in cooling cylinder is condensed liquefaction, and gas is overflowed by sponge, and condensed water can be used again as recycle-water,
The utility model simple structure, can be then exhausted from flue gas through absorption and bactericidal action, while the preheating also using flue gas is right
Waste gas is reclaimed, and structure is novel, is designed ingenious.
Description of the drawings
Fig. 1 is a kind of structural representation with air conditioning filter and the waste heat recovery device of waste water purification function；
In figure：1- evaporative filtration casees, 2- dividing plates, 3- flue gas breather lines, 4- flue gas ventholes, 5- waste water through holes, 6- are high
Pressure fan, 7- smoke inlet pipes road, 8- chemical industry carbon filtration nets, 9- actinolytes, 10- waste water ventilating water pipes, the conveying of 11- waste water
Pipeline, 12- influent waste water pipelines, 13- incline filter screen, 14- blow-off lines, 15- flow control valves, 16- condensers, 17- condensations
Pipeline under case, 18- evaporimeters, the upper pipelines of 19-, 20- expansion valves, 21-, 22- compressors, 23- tilted tubes, 24- air inlets,
25- gas outlets, 26- sponges, 27- condensing water conduits.
Specific embodiment
The technical scheme of this patent is described in more detail with reference to specific embodiment.
Refer to Fig. 1, a kind of waste heat recovery device with air conditioning filter and waste water purification function, including evaporating
Filter box 1, the bosom position of the evaporative filtration case 1 is fixedly connected with dividing plate 2, and the inside of dividing plate 2 offers flue gas ventilation
Pipeline 3, the top of dividing plate 2 offers some flue gas ventholes 4, and the bottom of dividing plate 2 offers waste water through hole 5, the evaporation
High pressure positive blower 6 is installed, the air inlet of high pressure positive blower 6 is connected smoke inlet pipe road 7, high pressure on the left side wall body of Rose Box 1
The air outlet of blower fan 6 is connected with the flue gas breather line phase 3, and the top of dividing plate 2 is provided with chemical industry carbon filtration net 8, chemical industry carbon filtration
Net 8 is mutually fixedly connected with the inwall of evaporative filtration case 1, and the top of chemical industry carbon filtration net 8 is provided with actinolyte 9, ultraviolet
Transmitter 9 is arranged on the left and right sides inwall of evaporative filtration case 1, and portion offers waste water water service pipe in the upper wall body of evaporative filtration case 1
Road 10, the right output port of waste water ventilating water pipe 10 is connected with the left side wall body of evaporative filtration case 1 by waste water conveyance conduit 11, is given up
The lower port of water conveyance conduit 11 is located between chemical industry carbon filtration net 8 and dividing plate 2；The bottom fixed installation of the evaporative filtration case 1
The top for having condenser 16, condenser 16 is provided with inclination filter screen 13, inclines filter screen 13 and mutually fixes with the inwall of evaporative filtration case 1
Connection, the left side of the evaporative filtration case 1 is provided with cooling cylinder 17, and the inner lower of cooling cylinder 17 is installed with evaporimeter
18, the upper port of evaporimeter 18 is connected with the upper port of condenser 17 by upper pipeline 19, and upper pipeline 19 is provided with expansion valve
20, the lower port of evaporimeter 18 is connected with the lower port of condenser 16 by lower pipeline 21, and lower pipeline 21 is provided with compressor
22, the inside of cooling cylinder 17 is connected with the inside of evaporative filtration case 1 by tilted tube 23, positioned at inclining for evaporative filtration case 1
The top in inclined tube road 23 offers air inlet 24, and positioned at the bottom of the tilted tube 23 of cooling cylinder 17 25 mouthfuls of outlet, institute are offered
State portion in the upper side wall body of cooling cylinder 17 and be fixedly connected with sponge 26；
Flue gas is entered into flue gas breather line 3 by high pressure positive blower 6, and by flue gas venthole 4 from evaporative filtration case 1
Overflow in interior waste water, evaporated again by being located at after absorption, the bactericidal action of chemical industry carbon filtration net 8 and actinolyte 9
In filter box 1, the pernicious gas that the granule foreign such as dust in flue gas is dissolved in water with some is adsorbed by waste water, the heat in flue gas
In passing to the waste water in evaporative filtration case 1, the cold-producing medium in lower pipeline 21 is sucked and boil down to high temperature by compressor 22
To the condenser 16 being located in evaporative filtration case 1, refrigerant liquefaction heat release becomes liquid to high steam heel row, while by waste water
Heated, waste water forms steam and be located in evaporative filtration case 1 after the waste heat effect of refrigerant liquefaction heat release and flue gas
Portion, because the waste water positioned at waste water ventilating water pipe 10 possesses relatively low temperature, therefore a part of steam is condensed into liquid water loading
In the upper inside walls of evaporative filtration case 1, because the upper wall body of evaporative filtration case 1 is hemispherical, condensed water is instilled to positioned at inclination
In the air inlet of pipeline 23, and it is injected into cooling cylinder 17, the gas after remaining steam and filtration, sterilization is also by tipping tube
23 roads are entered into cooling cylinder 17, due to the steaming that the cold-producing medium for becoming liquid reduces pressure in heel row to cooling cylinder 17 through expansion valve 20
Send out in device 18, the cold-producing medium evaporation endothermic of liquid becomes gas, while the temperature of cooling cylinder 17 is reduced, in cooling cylinder 17
Steam is condensed liquefaction, and gas is overflowed by sponge 26, and condensed water can be used again as recycle-water.
The semicircular in shape of the dividing plate 2.
The upper wall body of the evaporative filtration case 1 is hemispherical.
The left end of the waste water ventilating water pipe 10 is connected influent waste water pipeline 12.
The right side wall body of the evaporative filtration case 1 is connected blow-off line 14, and blow-off line 14 is arranged and inclines filter screen 13
Top, flow control valve 15 is installed on blow-off line 14.
The left side wall body bottom of the cooling cylinder 17 is connected condensing water conduit 27.
Operation principle of the present utility model is：Flue gas is entered into flue gas breather line 3 by high pressure positive blower 6, and is passed through
Overflow in waste water of the flue gas venthole 4 from evaporative filtration case 1, again by the suction of chemical industry carbon filtration net 8 and actinolyte 9
It is located in evaporative filtration case 1 after attached, bactericidal action, the granule foreign such as dust in flue gas is dissolved in the pernicious gas quilt of water with some
Waste water adsorbs, and the heat in flue gas is also passed in the waste water being located in evaporative filtration case 1, and the cold-producing medium in lower pipeline 21 is pressed
Simultaneously boil down to high temperature and high pressure steam heel row is extremely located in the condenser 16 in evaporative filtration case 1 suction of contracting machine 22, refrigerant liquefaction
Heat release becomes liquid, while waste water is heated, waste water is formed after the waste heat effect of refrigerant liquefaction heat release and flue gas
Steam is located inside evaporative filtration case 1, because the waste water positioned at waste water ventilating water pipe 10 possesses relatively low temperature, therefore a part
Steam is condensed into the upper inside walls that liquid water is attached to evaporative filtration case 1, due to the upper wall body of evaporative filtration case 1 it is hemispherical,
Condensed water is instilled in the air inlet of tilted tube 23, and is injected into cooling cylinder 17, remaining steam and filter, it is sterilized
Gas afterwards is entered into cooling cylinder 17 also by the road of tipping tube 23, because the cold-producing medium for becoming liquid reduces pressure through expansion valve 20
In evaporimeter 18 in heel row to cooling cylinder 17, the cold-producing medium evaporation endothermic of liquid becomes gas, while reducing cooling cylinder 17
Temperature, the steam in cooling cylinder 17 is condensed liquefaction, and gas is overflowed by sponge 26, and condensed water can be used as recycle-water quilt
Reuse.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity those skilled in the art should
Using specification as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (6)
1. a kind of waste heat recovery device with air conditioning filter and waste water purification function, including evaporative filtration case, its feature
It is that the bosom position of the evaporative filtration case is fixedly connected with dividing plate, and the inside of dividing plate offers flue gas breather line,
The top of dividing plate offers some flue gas ventholes, and the bottom of dividing plate offers waste water through hole, a left side for the evaporative filtration case
High pressure positive blower is installed, the air inlet of high pressure positive blower is connected smoke inlet pipe road in sidewall bodies, the air outlet of high pressure positive blower with
The flue gas breather line is connected, and the top of dividing plate is provided with chemical industry carbon filtration net, and chemical industry carbon filtration net is interior with evaporative filtration case
Wall is mutually fixedly connected, and the top of chemical industry carbon filtration net is provided with actinolyte, and actinolyte is arranged on evaporative filtration case
Left and right sides inwall, portion offers waste water ventilating water pipe in the upper wall body of evaporative filtration case, the right output port of waste water ventilating water pipe with
The left side wall body of evaporative filtration case is connected by waste water conveyance conduit, and the lower port of waste water conveyance conduit is located at chemical industry carbon filtration net
Between dividing plate；The bottom of the evaporative filtration case is installed with condenser, and the top of condenser is provided with inclination filter screen, inclines
Tiltedly filter screen is mutually fixedly connected with the inwall of evaporative filtration case, and on the left of the evaporative filtration case cooling cylinder is provided with, cooling cylinder
Inner lower is installed with evaporimeter, and upper end of evaporator mouth is connected with the upper port of condenser by upper pipeline, upper pipe
Road is provided with expansion valve, and the lower port of evaporimeter is connected with the lower port of condenser by lower pipeline, and lower pipeline is provided with pressure
Contracting machine, inside and the inside of evaporative filtration case of cooling cylinder are connected by tilted tube, positioned at the tipping tube of evaporative filtration case
The top in road offers air inlet, and positioned at the bottom of the tilted tube of cooling cylinder gas outlet, the upside of the cooling cylinder are offered
Sponge is fixedly connected with inside wall body.
2. a kind of waste heat recovery device with air conditioning filter and waste water purification function according to claim 1, its
It is characterised by, the dividing plate semicircular in shape.
3. a kind of waste heat recovery device with air conditioning filter and waste water purification function according to claim 2, its
It is characterised by, the upper wall body of the evaporative filtration case is hemispherical.
4. a kind of waste heat recovery device with air conditioning filter and waste water purification function according to claim 1 or 3,
Characterized in that, the left end of the waste water ventilating water pipe is connected influent waste water pipeline.
5. a kind of waste heat recovery device with air conditioning filter and waste water purification function according to claim 4, its
It is characterised by, the right side wall body of the evaporative filtration case is connected blow-off line, blow-off line is arranged and the top for inclining filter screen,
Flow control valve is installed on blow-off line.
6. a kind of waste heat recovery device with air conditioning filter and waste water purification function according to claim 1, its
It is characterised by, the left side wall body bottom of the cooling cylinder is connected condensing water conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197310.8U CN206160174U (en) | 2016-10-28 | 2016-10-28 | Afterheat recycling device with air conditioner filters and waste water purification performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197310.8U CN206160174U (en) | 2016-10-28 | 2016-10-28 | Afterheat recycling device with air conditioner filters and waste water purification performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206160174U true CN206160174U (en) | 2017-05-10 |
Family
ID=58658356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621197310.8U Expired - Fee Related CN206160174U (en) | 2016-10-28 | 2016-10-28 | Afterheat recycling device with air conditioner filters and waste water purification performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206160174U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408807A (en) * | 2018-05-15 | 2018-08-17 | 苏州凯新分离科技有限公司 | A kind of evaporation heat reclamation device for wastewater treatment |
| CN110280031A (en) * | 2019-08-01 | 2019-09-27 | 苏州乔发环保科技股份有限公司 | A kind of evaporator with heat pump |
| CN110304774A (en) * | 2019-06-14 | 2019-10-08 | 中机国能电力工程有限公司 | A kind of thermal power generation station-service waste water filtering sedimentation basin |
| CN115400540A (en) * | 2022-08-19 | 2022-11-29 | 安徽正刚新能源科技有限公司 | High-temperature waste steam heat recovery device |
-
2016
- 2016-10-28 CN CN201621197310.8U patent/CN206160174U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408807A (en) * | 2018-05-15 | 2018-08-17 | 苏州凯新分离科技有限公司 | A kind of evaporation heat reclamation device for wastewater treatment |
| CN110304774A (en) * | 2019-06-14 | 2019-10-08 | 中机国能电力工程有限公司 | A kind of thermal power generation station-service waste water filtering sedimentation basin |
| CN110280031A (en) * | 2019-08-01 | 2019-09-27 | 苏州乔发环保科技股份有限公司 | A kind of evaporator with heat pump |
| CN110280031B (en) * | 2019-08-01 | 2024-06-11 | 苏州乔发环保科技股份有限公司 | Heat pump evaporator |
| CN115400540A (en) * | 2022-08-19 | 2022-11-29 | 安徽正刚新能源科技有限公司 | High-temperature waste steam heat recovery device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206160174U (en) | Afterheat recycling device with air conditioner filters and waste water purification performance | |
| CN206152550U (en) | Exhaust treatment device in pyridine production | |
| CN107583428A (en) | A kind of recycle device of heavy industries waste gas | |
| CN208776558U (en) | Sludge drying and tail gas recycle concentration device | |
| CN105771300B (en) | A kind of gas recovery system for oil | |
| CN209348153U (en) | A kind of biomass combustion furnace tar oil treatment device | |
| CN207175748U (en) | Energy-autarchic type sludge drying is equipped with Incineration in CFB and tail gas clean-up | |
| CN109908713A (en) | Flue gas dehumidification treatments system | |
| CN106091212B (en) | The fresh air air cleaning system and method for PM2.5 are removed based on flocculation core | |
| CN206064082U (en) | A kind of organic exhaust gas three-level negative pressure plasma processing | |
| CN109675921A (en) | The continuous direct thermal desorption system of organic polluted soil and its thermal desorption method | |
| CN205909418U (en) | Home -use multistage air purification device | |
| CN202052461U (en) | Low energy-consumption comprehensive purifying device of industrial waster gas | |
| CN212640249U (en) | Sludge dewatering mummification handles waste gas utilization equipment | |
| CN205700018U (en) | Condensation flue gas desulfurization device | |
| CN210145785U (en) | Deep dehumidification purification system for wet flue gas | |
| CN107285599A (en) | Energy-autarchic type sludge drying is equipped with Incineration in CFB and tail gas clean-up | |
| CN104048306B (en) | Energy-saving environmental-protection boiler exhaust emissions tower | |
| KR101229985B1 (en) | Device for pre-treating contaminated air and deordorizing system using the same | |
| CN106731646A (en) | A kind of metallurgy uses flue gas desulfurization device | |
| CN207815371U (en) | Fume moisture removing means | |
| CN208302514U (en) | A kind of consumer waste incineration application exhaust smoke processing device with environment-friendly function | |
| CN206837776U (en) | A kind of flue gas converter | |
| CN206276182U (en) | One kind heating chimney particulate matter remove device | |
| CN111039535A (en) | Sludge deep dehydration and drying treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20171028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |