CN2460873Y - Dry-type ash removing device for coal fired boiler of power station - Google Patents
Dry-type ash removing device for coal fired boiler of power station Download PDFInfo
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- CN2460873Y CN2460873Y CN 01200944 CN01200944U CN2460873Y CN 2460873 Y CN2460873 Y CN 2460873Y CN 01200944 CN01200944 CN 01200944 CN 01200944 U CN01200944 U CN 01200944U CN 2460873 Y CN2460873 Y CN 2460873Y
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Abstract
电站燃煤锅炉干式排渣装置,包括耐高温板式输送带、输送带密封外罩,其特征在于还包括一遮热板装置,它主要由一遮热板组和驱动机构组成,通过控制每个遮热板的运动摆角可调整排渣间隙,并可分部运动遮热板,使排渣连续进行。遮热板组在接受锅炉排放的高温灰渣时,炉膛的辐射热通过遮热板组被有效的隔离并返送回炉膛,同时落下来的灰渣在遮热板组上能继续燃烧释放热量,减少了锅炉的热损失,也使输送带的热负荷降到最低点,提高了锅炉的热效率。同时大块灰渣落下来时不直接冲击输送带,提高了装置运行的可靠性。
The dry-type slag discharge device for coal-fired boilers in power stations includes a high-temperature-resistant plate conveyor belt and a sealed outer cover for the conveyor belt, and is characterized in that it also includes a heat shield device, which is mainly composed of a heat shield group and a driving mechanism. The swing angle of the movement of the heat shield can adjust the slag discharge gap, and the heat shield can be moved in sections so that the slag discharge can be carried out continuously. When the heat shield group receives the high-temperature ash discharged from the boiler, the radiant heat of the furnace is effectively isolated through the heat shield group and returned to the furnace, and the falling ash can continue to burn on the heat shield group to release heat. The heat loss of the boiler is reduced, the heat load of the conveyor belt is reduced to the lowest point, and the thermal efficiency of the boiler is improved. At the same time, when a large piece of ash falls down, it does not directly impact the conveyor belt, which improves the reliability of the operation of the device.
Description
The utility model belongs to coal burning boiler of power station bottom residue extraction mechanism, and what be specifically related to is to adopt the dried slag removing technology to get rid of the coal burning boiler of power station dry slag-draining device of pulverized-coal fired boiler bottom ashe.
At present, coal burning boiler of power station generally adopts hydraulic slag discharging system and equipment, and wherein common equipment is made up of grey slag bucket, shutoff door, dragveyer, slag crusher etc.The ash slag bucket is installed in boiler bottom, accepts or accumulate the lime-ash of boiler eliminating.The outlet of ash slag bucket has the opposite opened shutoff door and is connected with dragveyer.The shutoff door Driven by Hydraulic Cylinder, the back lime-ash that opens the door directly falls into the tank of dragveyer, seals boiler slag bucket slag notch at closing time from the boiler furnace hopper, can dragveyer be overhauled not blowing out.Dragveyer is made up of seal case and scraper-type carrier chain, stores a certain amount of cooling water in the seal case.Cooling water makes the high temperature furnace slag quenching granulation that falls into, and can prevent that cold air from entering burner hearth simultaneously.The lime-ash that scraper plate is pulled out is through the slag crusher fragmentation, and water pours grey ditch or connects conveyer and export from boiler shop.Hydraulic slag discharging system and equipment have following deficiency:
1. slag directly falls into cooling water by boiler bottom, and combustible in the lime-ash and contained thermal loss are fallen, and simultaneously, the water vapour of generation can corrode the boiler bottom parts.
2. water resources consumption is big, and the discharging of grey pulp water causes environmental pollution, and the disposal cost height.
3. system complex, the Maintenance and Repair expense is big.
International monopoly WO87/04231 and Japan Patent JP-A-63 6319 disclose a kind of method of coal-burning boiler dried slag removing respectively, implement this method and can address the above problem substantially.Its technical scheme is: at boiler bottom a high temperature resistant board-like conveyer belt is set, and with outer cover that conveyer belt is airtight, outer cover is connected with boiler bottom simultaneously, prevents that cold air from entering.Directly fall on the slat conveyer from the high temperature furnace slag that boiler is got rid of, send by conveyer belt.On outer cover, have air admission hole, enter air in certain amount thus and contact with conveyer belt, and carry out heat exchange, reach cooling purpose with different forms with lime-ash.The lime-ash that is cooled is exported in the mode of machinery or strength after fragmentation.
Wherein, international monopoly WO87/04231 discloses simultaneously to implementing the equipment that this method is developed.Its technical characterictic is: conveyer belt is a high temperature-resistance conveyor belt, and its resistance to elevated temperatures is to realize by the special construction design of conveyer belt and the selection of high-temperature alloy material, to adapt to the requirement that any direction expands; Conveyer belt is closed in the steel case of sealing; At the downstream direction of conveyer belt dreg discharging area, a cyclically operating valve is arranged, can control or stop cold air to enter; Boiler for the negative pressure operation, flow in the opposite direction with lime-ash eliminating side by the air flow edge that cyclically operating valve control enters, heat that the combustible afterflame produces in the lime-ash and contained heat thereof, and carry out heat exchange between cold air, be inhaled into burner hearth behind the atmosphere temperature rising, improved boiler efficiency.There is following deficiency in this device:
1. slag bucket is opened by conveyer belt and is accepted the lime-ash that boiler is discharged, and conveyer belt effectively connects grey area and is exposed in the radiation of burner hearth district, has increased the thermic load of conveyer belt;
2. boiler directly impacts on the conveyer belt if fall the big coking clinker of kilograms up to a hundred, will cause conveyer belt to damage;
3. slag is directly fallen on the conveyer belt by boiler bottom, so in the lime-ash of lime-ash, particularly large-size, heat that the combustible afterflame produces and contained heat thereof at first carry out heat exchange with conveyer belt, have increased the thermic load of conveyer belt;
4. the easy stuck slag crusher of coke button bigger, that hardness is high that contains in the lime-ash and causing the accident;
5. after air enters airtight casing, with ash bed on the conveyer belt only for the surface contacts, heat exchanger effectiveness is low, particularly under the thicker situation of ash bed.
The purpose of this utility model is to improve the deficiency of prior art, provide a kind of can with the supporting coal burning boiler of power station dry slag-draining device of existing coal burning boiler of power station.
The utility model purpose is achieved by the following technical solution:
This coal burning boiler of power station dry slag-draining device, comprise high temperature resistant board-like conveyer belt 1, conveyer belt sealing cover 2, it is characterized in that also comprising an insulation board device 6, it is mainly by casing 9, one insulation board group 6h and driving mechanism 6g form, each insulation board among the said insulation board group 6h all has plate body 6j and the rotating shaft 6f of two coaxial lines that are fixedly linked with plate body 6j, drive the pivot angle γ of the rotating shaft 6f change plate body 6j of plate body by oil cylinder 12, make and form the deslagging gap L between adjacent plate body, deslagging gap L between adjacent plate body changes from 0-300mm, make the insulation board group overlapped with the projection of conveyor belt surface in motion pivot angle γ scope, can adjust slag discharge room crack L by the motion pivot angle γ that controls each insulation board.
The through hole that the rotating shaft 6f of said insulation board passes on the insulation board casing 9 is supported by the bearing block 10 of both sides, and thrust plate 11 is arranged in the insulation board rotating shaft, and insulation board rotating shaft 6f is fixedlyed connected with thrust plate 11, drives plate body 6j by rotating shaft 6f and swings.
Said bearing block 10 and oil cylinder 12 pass to steel construction 13 with support reaction, and casing 9 seals the insulation board group, and are connected with boiler slag bucket 18 and conveyer belt outer cover 2 respectively by Flexible Connector 19,20, thereby have constituted airtight system.
At the conveyer belt head air admission hole 5 is arranged, air inlet 5 is made of a plurality of air inlet pipe, and the grieshoch on the nearly conveyer belt of air inlet pipe one termination makes air form suitable disturbance, forced convertion to grieshoch.Casing 9 is provided with a plurality of inspection openings 14.
Also have a clinker sorting plate 7, be arranged on the conveyer belt terminal, coke button collecting box 8 is aimed in the sorting plate outlet, and they are connected with the conveyer belt outer cover respectively.
The utlity model has following advantage:
The insulation board group is when accepting the high-temperature ash of boiler emission, the radiant heat of burner hearth is melted down thorax by the insulation board group by effective isolation and foldback, the fallen lime-ash release heat that can burn away on the insulation board group has simultaneously reduced the heat loss of boiler, has improved the thermal efficiency of boiler.
The plate body of insulation board group is made cavity structure; and cool off by cooling medium; can effectively reduce the service life of lime-ash exhaust temperature and prolongation plate body; carry out breakage by the chimb on the plate body when bulk lime-ash falls simultaneously; the bulk lime-ash can directly not fallen on the conveyer belt; protect conveyer belt not impacted on the one hand by the bulk lime-ash; making the bulk lime-ash become the fritter lime-ash on the other hand burns away more fully on the insulation board group; promptly help the cooling of conveyer belt and lime-ash; also make the thermic load of conveyer belt drop to minimum point, improved the device reliability of operation.
Chimb on the insulation board plate body makes the bulk lime-ash become the fritter lime-ash, alternately fall on the conveyer belt by the gap between the plate body, make the load-bearing of conveyer belt more even, lime-ash separates big or small lime-ash by the sorting plate of conveyer belt terminal, the coke button of large-size is sorted in the coke button collecting box in the lime-ash, to prevent stuck slag crusher, prolong the service life of disintegrating apparatus.
Embodiment of the present utility model respectively schemes referring to following:
Fig. 1 is the dry slag-draining device schematic diagram;
Fig. 2 is that insulation board group position concerns schematic diagram;
Fig. 3 is that the A-A of Fig. 1 is to generalized section;
Fig. 4 is that the B of Fig. 3 is to partial schematic diagram;
Fig. 5 a is the front view of insulation board plate body;
Fig. 5 b is that the C-C of Fig. 5 a is to generalized section;
Fig. 5 c is that the D-D of Fig. 5 b is to generalized section;
Fig. 6 a is the front view of another embodiment of insulation board plate body;
Fig. 6 b is that the E-E of Fig. 6 a is to generalized section;
Fig. 6 c is that the F-F of Fig. 6 b is to generalized section.
Embodiment:
The coal burning boiler of power station dry slag-draining device that the utility model relates to mainly partly is made up of high temperature resistant board-like conveyer belt 1, conveyer belt sealing cover 2, slag crusher 3, middle slag storehouse 4, air inlet 5, an insulation board device 6, clinker sorting plate 7, coke button collecting box 8, insulation board casing 9, device slag-drip opening 21 etc.This device is arranged in the bottom of boiler slag bucket 16.Constituted an airtight system by boiler furnace hopper 18, boiler water sealing groove 17, boiler slag bucket 16, insulation board casing 9, Flexible Connector 19,20 and conveyer belt sealing cover 2, as shown in Figure 1, 2, 3.
About 900 ℃ of the temperature of general boiler furnace hopper 18 throats, normal slag size of discharging generally arrives the hundreds of millimeter at tens microns; But the lime-ash that has large-size under situations such as boiler soot-blowing is discharged; Under specific condition, meet ature of coal coking serious situation, have coke button bigger or that hardness is higher and discharge.The thermal capacity of lime-ash and temperature are directly proportional with its size.
In addition, because boiler furnace hopper 18 throat's temperature are higher, its heat is by object transfer around radiation direction boiler slag bucket 16 grades, if conveyer belt is exposed in its radiation area, understands the Yin Qire conduction equally and heats up.The heat of conveyer belt acceptance just is equivalent to the heat of lime-ash transmission and the heat sum of boiler radiation delivery like this; Directly be discharged into clinker high temperature furnace slag, particularly some large-sizes, that thermal capacity is higher on the conveyer belt 1 by boiler furnace hopper 18, running into air can burn away, and the heat that discharges at first passes to conveyer belt 1, can increase the thermic load of conveyer belt equally.
Also have, under special circumstances, boiler can be discharged up to a hundred kilograms coke button, if directly impact on the conveyer belt, owing to the movement of falling object causes its damage, if press special operation condition design conveyer belt, then can increase manufacturing cost.
The utility model has designed an insulation board device 6 at device delivery band 1 and 18 of boiler slag buckets, can effectively address the above problem, and can produce some special technique effects, as Fig. 1, Fig. 2, Fig. 3.One insulation board device 6 mainly is made up of an insulation board group 6h and drive unit 6g.As Fig. 3, Fig. 4, the through hole that insulation board rotating shaft 6f passes on its casing 9 is supported by the bearing block 10 of both sides.Insulation board rotating shaft 6f is fixedlyed connected with thrust plate 11.Oil cylinder 12 drives thrust plate 11 and drives insulation board body 6j swing, and bearing block 10 and oil cylinder 12 pass to steel construction 13 with support reaction.Casing 9 seals the insulation board group, boiler furnace hopper 18, boiler water sealing groove 17, boiler slag bucket 16, casing 9 (as Fig. 3 middle part), and be connected with boiler slag bucket 18 and conveyer belt sealing cover 2 respectively, thereby constituted an airtight system by Flexible Connector 19,20.
High-temperature ash is discharged by boiler furnace hopper 18, falls on the insulation board group 6h through boiler slag bucket 16.Driving mechanism 6g is made up of oil cylinder 12, thrust plate 11, and oil cylinder 12 drives insulation board group 6h swing by thrust plate 11, and its pivot angle is that γ, γ swing between 0-50 °.
The layout of insulation board group 6h is determined by the physical dimension of centre-to-centre spacing size, initial position angle α and plate body 6j between two plate bodys, make the insulation board group overlapped in the projection of conveyor belt surface in motion pivot angle γ scope, thereby play the effect of isolating the boiler ray.
The top of insulation board body 6f processes sharper chimb 6b, and the bulk lime-ash that falls from the boiler furnace hopper is broken by behind the movement of falling object and its bump, simultaneously, and owing to the effect of insulation board can directly not fallen on the conveyer belt.Impulsive force is delivered to bearing block 10 and steel construction 13 by insulation board 6, and these partial design have enough impact strengths, and realizes easily.
Moreover as Fig. 3,4, insulation board casing 9 both sides have inspection opening 14.If the situation of large scale coke button frame occur at the insulation board top, adopt special-purpose disintegrating slag instrument by inspection opening 14, slag is crushed to certain size row down.
The utility model has also designed clinker sorting plate 7 and coke button collecting box 8 at device delivery band 1 head delivery end.At this moment, lime-ash is at first fallen on the clinker sorting plate 7, and the coke button of large-size is sorted in the coke button collecting box 8 in the lime-ash, to prevent stuck slag crusher; The lime-ash size is suitable for entering middle slag bucket 4 after broken lime-ash enters slag crusher 3 fragmentations.The structural design of clinker sorting plate 7 is undertaken by the sorting requirement.
The utility model also in the design of the air inlet 5 that installs, adopts some air inlet pipe.Air inlet pipe is passed conveyer belt sealing cover 2, near the grieshoch of conveyer belt.After air enters from the outside, ash bed is formed suitable disturbance, forced convertion, increased cooling effect.The air that enters from air inlet 5, the contrary conveyer belt direction of motion flows, carry out heat exchange once more with ash bed on the conveyer belt, and lime-ash is cooled, air themperature raises, sends into burner hearth bottom slag bucket, or introduce air preheater with pipeline, reach the purpose that energy utilizes again.
Below, the duty of insulation board is described:
1. because the gap L of insulation board plate body can generally be controlled at 50-300mm since 0 adjustment during device work, this changes insulation board pivot angle γ by oil cylinder 12 and realizes.Control γ gets final product within 30 ° of-50 ° of scopes, can not be as the criterion because of the deadweight landing with lime-ash.Constantly piled up on the insulation board group by the lime-ash that boiler furnace hopper 16 falls, the ash bed thickness of accumulation was directly proportional with the time.Lime-ash burns away on insulation board, and release heat behind the certain hour interval, is discharged on the conveyer belt.Form because the insulation board group is a plurality of plate bodys, the discharging action can hocket, and guarantees that conveyer belt accepts lime-ash continuously, and is transported to the head delivery end.The action that the insulation board plate body alternately discharges lime-ash can realize by following technical measures.1. by electric programme-control oil cylinder (12) alternation, thereby drive each plate body 6j alternating movement, realize the substep deslagging.2. adopt the plate body (as Fig. 6 b) have air nozzle 6a, pressure-air by electric programme-control regularly and ash bed being purged in air nozzle 6a ejection of replacing.Purge air and lime-ash forced convertion realize heat exchange once more simultaneously;
2. the ash bed that is deposited on the insulation board group carries out heat exchange by cooling mediums such as the air introduced in plate body and the insulation board cavity 6d or water, can reach and give cold purpose;
3. boiler is radiated the heat on the insulation board, and a part is reflected back toward burner hearth, and another part is absorbed by plate body or carries out heat exchange with cooling medium in the insulation board cavity 6d.
4. after the clinker of large-size is treated fully burning on the accumulation insulation board, adjust landing behind the insulation board pivot angle γ＜30 ° by oil cylinder, this operation according to coking situation of boiler can be automatically regularly or artificial non-regular control realize;
5. adjust insulation board 6 and when (be between each insulation board gap be zero), seal boiler slag bucket slag notch, can under the situation of not blowing out, safeguard conveyer belt to the position of pivot angle.Certainly, even boiler slag bucket slag notch by the continuous accumulation of slag blanket, also can be sealed in the pivot angle γ position (between each insulation board certain interval being arranged) when insulation board 6 is in the device duty.
Below, the duty of this device is carried out order describes:
1. duty: the motion pivot angle γ of insulation board group generally is controlled within 30 ° of-50 ° of scopes.At this moment, insulation board has the thermal-radiating effect of the burner hearth of isolation, and lime-ash is constantly piled up on insulation board.Alternatively swinging insulation board or alternately purge insulation board is discharged into lime-ash on the conveyer belt.The conveyer belt of running is sent lime-ash continuously.
2. maintenance state: motion pivot angle γ=0 of control insulation board, make gap L=0 between insulation board, the outlet of boiler slag bucket is closed, and lime-ash accumulates in the boiler slag bucket.At this moment, can safeguard slag-draining device.
3. coke cleaning state: in particular cases, supported by insulation board if bigger coke button occurs, adopt the specific purpose tool fragmentation after, suitably adjust insulation board pivot angle γ, coke button can be discharged on the conveyer belt.
Fall the lime-ash that further burns on the insulation board and discharge certain heat, be discharged on the conveyer belt 1, send by the conveyer belt of continuous running.Lime-ash transmits to the head delivery end with lower speed with conveyer belt.Air inlet 5 is sucked into air in certain amount from the head, and the contrary conveyer belt direction of motion of air-flow flows, and carries out heat exchange with lime-ash, lime-ash cooling, atmosphere temperature rising.Air after the intensification can enter burner hearth by the slag bucket bottom according to the ruuning situation of boiler, also can introduce air preheater by pipeline.
After lime-ash was transported to the head delivery end, generally directly entering slag crusher 3 carried out fragmentation, enters the middle slag bucket 4 with a constant volume and stores in short-term.If boiler coke is serious, can set up coke button sorting plate 7 at head, big coke button is diverted to coke button collecting box 8, regularly dispose.
The lime-ash of slag bucket 4 in the middle of being stored into is regularly arranged to the lime-ash storehouse that is located at the boiler shop outside by device slag-drip opening 21.Lime-ash generally adopts ripe lime-ash conveying technology such as screw(-type) feeder, belt feeder or strength conveying to the conveying in lime-ash storehouse.
Claims (11)
1. coal burning boiler of power station dry slag-draining device, comprise high temperature resistant board-like conveyer belt (1), conveyer belt sealing cover (2), it is characterized in that also comprising an insulation board device (6), it is mainly by casing (9), one insulation board group (6h) and driving mechanism (6g) are formed, each insulation board in the said insulation board group (6h) all has plate body (6j) and the rotating shaft (6f) of two coaxial lines that are fixedly linked with plate body (6j), drive the pivot angle γ of rotating shaft (6f) the change plate body (6j) of plate body by oil cylinder (12), make and form deslagging gap (L) between adjacent plate body, make the insulation board group overlapped with the projection of conveyor belt surface in motion pivot angle γ scope, can adjust slag discharge room crack (L) by the motion pivot angle γ that controls each insulation board.
2. device according to claim 1 is characterized in that cavity (6d) is made in plate body (6j) inside of said insulation board, processes the two through hole (6c) that communicates with cavity (6d) at the center of said two rotating shafts (6f).
3. device according to claim 1, cavity (6d) is made in plate body (6j) inside that it is characterized in that said insulation board, on the plate body (6j) of said insulation board, have some air spray orifices (6a), the cavity of plate body (6j) is communicated with air spray orifice (6a), and a center in said two rotating shafts (6f) processes a through hole (6c) that communicates with cavity (6d).
4. according to claim 2 or 3 described devices, it is characterized in that suitably projection of plate body (6j) top margin, and sharper chimb (6b) is arranged.
5. according to claim 2 or 3 described devices, it is characterized in that the through hole (6c) in the rotating shaft (6f) of insulation board is connected with the external pressure source of the gas.
6. device according to claim 1 is characterized in that the deslagging gap (L) between adjacent plate body changes from 0-300mm.
7. device according to claim 1, the through hole that the rotating shaft (6f) that it is characterized in that insulation board is passed on the insulation board casing (9) is supported by the bearing block (10) of both sides, thrust plate (11) is arranged in the insulation board rotating shaft, insulation board rotating shaft (6f) is fixedlyed connected with thrust plate (11), drives plate body (6j) swing by rotating shaft (6f).
8. device according to claim 7, it is characterized in that bearing block (10) and oil cylinder (12) pass to steel construction (13) with support reaction, casing (9) seals the insulation board group, and is connected with boiler slag bucket (18) and conveyer belt outer cover (2) respectively by Flexible Connector (19,20).
9. device according to claim 1 is characterized in that at the conveyer belt head air admission hole (5) being arranged, and air inlet (5) is made of a plurality of air inlet pipe, the grieshoch on the nearly conveyer belt of air inlet pipe one termination.
10. device according to claim 1 is characterized in that casing (9) is provided with a plurality of inspection openings (14).
11. device according to claim 1 is characterized in that a clinker sorting plate (7) in addition, is arranged on the conveyer belt terminal, coke button collecting box (8) is aimed in the sorting plate outlet, and they are connected with the conveyer belt outer cover respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01200944 CN2460873Y (en) | 2001-01-10 | 2001-01-10 | Dry-type ash removing device for coal fired boiler of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01200944 CN2460873Y (en) | 2001-01-10 | 2001-01-10 | Dry-type ash removing device for coal fired boiler of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2460873Y true CN2460873Y (en) | 2001-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01200944 Expired - Lifetime CN2460873Y (en) | 2001-01-10 | 2001-01-10 | Dry-type ash removing device for coal fired boiler of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2460873Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546038B (en) * | 2008-03-27 | 2012-07-04 | 合肥金星机电科技发展有限公司 | Anti-coking purging device |
| CN102829466A (en) * | 2012-07-25 | 2012-12-19 | 北京国电富通科技发展有限责任公司 | Slag combustion apparatus of biomass boiler |
| US8746157B2 (en) | 2009-08-31 | 2014-06-10 | Beijing Guodian Futong Science And Technology Development Co., Ltd. | Bottom ash discharging device for coal-fired boiler |
| CN104791815A (en) * | 2015-04-20 | 2015-07-22 | 张斐斐 | Discharge port of slag cooler |
-
2001
- 2001-01-10 CN CN 01200944 patent/CN2460873Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546038B (en) * | 2008-03-27 | 2012-07-04 | 合肥金星机电科技发展有限公司 | Anti-coking purging device |
| US8746157B2 (en) | 2009-08-31 | 2014-06-10 | Beijing Guodian Futong Science And Technology Development Co., Ltd. | Bottom ash discharging device for coal-fired boiler |
| CN102829466A (en) * | 2012-07-25 | 2012-12-19 | 北京国电富通科技发展有限责任公司 | Slag combustion apparatus of biomass boiler |
| CN102829466B (en) * | 2012-07-25 | 2015-04-01 | 北京国电富通科技发展有限责任公司 | Slag combustion apparatus of biomass boiler |
| CN104791815A (en) * | 2015-04-20 | 2015-07-22 | 张斐斐 | Discharge port of slag cooler |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Free format text: FORMER OWNER: STATE POWER CORPORATION ELECTRIC POWER CONSTRUCTION RESEARCH INSTITUTE Effective date: 20090724 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090724 Address after: Beijing City, Haidian District small business Qinghe Road No. 15 Chinese Electric Power Research Institute of the Ministry of science and technology, zip code: 100192 Patentee after: China Electric Power Research Institute Address before: Liu Zhenqiang, 33 South Binhe Road, Guang'an, Beijing, 100055 Patentee before: Inst. of Power Construction, State Power Corporation |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110110 Granted publication date: 20011121 |