CN212298966U - Fluidized bed hood capable of automatically adjusting resistance drop - Google Patents
Fluidized bed hood capable of automatically adjusting resistance drop Download PDFInfo
- Publication number
- CN212298966U CN212298966U CN202020104566.XU CN202020104566U CN212298966U CN 212298966 U CN212298966 U CN 212298966U CN 202020104566 U CN202020104566 U CN 202020104566U CN 212298966 U CN212298966 U CN 212298966U
- Authority
- CN
- China
- Prior art keywords
- inlet pipe
- air inlet
- air
- hood
- cap
- 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.)
- Active
Links
Images
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model belongs to the technical field of circulating fluidized bed boiler structure, concretely relates to but fluidized bed hood that automatically regulated resistance falls. Comprises a blast cap head, an air inlet pipe and a cap which are coaxially arranged; the upper end of the hood head of the hood is of a bell-jar type closed structure, the bottom of the hood head is of an open shell, a plurality of air exhaust holes are formed in the lower part of the hood head close to the edge, and the air exhaust holes are uniformly distributed along the circumference; the air inlet pipe is in a circular pipe shape, the middle part of the air inlet pipe is provided with a circular truncated cone, the top of the air inlet pipe is provided with an air outlet, the upper part of the air inlet pipe is provided with strip-shaped air outlets along the circumference, the air outlets are uniformly distributed along the circumference, and strip-shaped groove tracks are arranged in gaps among the strip-shaped air outlets; the blast cap head is connected with the air inlet pipe through threads and is connected with the circular truncated cone in a spot welding manner; the cover cap is arranged on the top of the air inlet pipe, the appearance of the cover cap is a round cover shape, and a cylindrical bulge is arranged on the top of the round cover; the inner wall of the cover cap is provided with a convex groove track which is matched with the concave groove track of the air inlet pipe. The hood can automatically adjust resistance drop at different air inlet temperatures, thereby ensuring the stability of bed pressure and maintaining the stable operation of the boiler.
Description
Technical Field
The utility model belongs to the technical field of circulating fluidized bed boiler structure, concretely relates to but fluidized bed hood that automatically regulated resistance falls.
Background
The air distributor is one of the key parts in the burning equipment of the circulating fluidized bed boiler, and has the functions of supporting bed material and making air enter the fluidized bed uniformly, so that the bed material obtains good fluidizing condition, and the performance of the air distributor directly affects the fluidizing condition of the fluidized bed boiler and the flowing, burning and heat transferring processes in the burning chamber, thereby affecting the performance of the fluidized bed boiler.
The blast cap is an essential part in the air distribution device of the fluidized bed boiler, and has the functions of secondarily distributing and guiding air to enter the fluidized bed at a sufficient speed, generating a strong disturbance air cushion layer on the upper part of the blast cap, well mixing the air and solid particles to establish a good fluidization state, uniformly inputting fluidization air from the bottom of the fluidized bed, maintaining the stability of bed pressure, and being vital to the operation, combustion and safety of the fluidized bed.
The air cap has various forms, and the air distribution device of most of the prior fluidized bed boilers adopts a bell-type air cap. The existing bell-type blast cap generally consists of an air inlet pipe and a single cap head, and in long-term operation, the blast cap head deforms after being worn because of being always washed by fluid at high temperature, so that the service life of the blast cap is shortened, and the fluidization quality is seriously influenced; meanwhile, circulating materials in the fluidized bed easily enter the air inlet pipe through an air outlet of the hood head of the air cap, a large amount of materials leak down through the air cap and flow back, and the slag leakage phenomenon is obvious; in addition, in the fluidized bed boiler, the temperature of the working environment fluctuates, the air volume of the primary air is sometimes unstable, so that the flow velocity of the air outlet of the hood can be correspondingly changed, the resistance drop of the hood changes, and the fluctuation of the bed pressure is caused. The existing bell-type hood cannot adjust the resistance fluctuation of the hood caused by the change of the inlet air temperature or the inlet air volume, thereby influencing the running stability of the fluidized bed boiler.
Therefore, it is desirable to provide an air cap, which has good wear resistance and slag leakage resistance, and can automatically adjust the resistance of the air cap when the temperature of the working environment or the intake of primary air fluctuates, reduce the fluctuation of the resistance of the air distribution device, maintain the stable bed pressure, and ensure the stable operation of the fluidized bed boiler.
Disclosure of Invention
An object of the utility model is to provide a but fluidized bed hood that automatically regulated resistance falls, the hood can the automatically regulated resistance fall under different air inlet temperature to guarantee the stability of bed pressure, maintain the steady operation of boiler.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a fluidized bed hood capable of automatically adjusting resistance drop comprises a hood head, an air inlet pipe and a hood cap which are coaxially arranged; the upper end of the hood head of the hood is of a bell-jar type closed structure, the bottom of the hood head is of an open shell, a plurality of air exhaust holes are formed in the lower part of the hood head close to the edge, and the air exhaust holes are uniformly distributed along the circumference; the air inlet pipe is in a circular pipe shape, the middle part of the air inlet pipe is provided with a circular truncated cone, the top of the air inlet pipe is provided with an air outlet, the upper part of the air inlet pipe is provided with strip-shaped air outlets along the circumference, the air outlets are uniformly distributed along the circumference, and strip-shaped groove tracks are arranged in gaps among the strip-shaped air outlets; the blast cap head is connected with the air inlet pipe through threads and is connected with the circular truncated cone in a spot welding manner; the cover cap is arranged on the top of the air inlet pipe, the appearance of the cover cap is a round cover shape, and a cylindrical bulge is arranged on the top of the round cover; the inner wall of the cover cap is provided with a convex groove track which is matched with the concave groove track of the air inlet pipe.
The hood head is made of ZG40Cr25Ni 20.
The top and the bottom of the blast cap head adopt thickened structures.
The air inlet pipe is made of 1Cr18Ni9 Ti.
The material of the cap is ZG40Cr25Ni 20.
The roughness of the contact surface of the nut cap and the concave-convex groove of the air inlet pipe is Ra1.6.
The air inlet pipe is welded with the air distribution plate at the bottom.
The thermal expansion coefficient of the material of the cover cap is larger than that of the material of the air inlet pipe.
The air exhaust hole of the hood head is a waist-round hole, inclines downwards from inside to outside and forms an angle of 10-15 degrees with the horizontal direction; the number of the exhaust holes is six, and the diameter of the exhaust holes is 15-20 mm.
Primary air enters the blast cap through the air inlet pipe, is blown out through the strip-shaped air outlet, enters a gap between the blast cap head and the air inlet pipe, and is blown out of the blast cap through the circular air outlet at the bottom of the blast cap head; in the operation process, the air volume of the primary air is basically unchanged, when the temperature of the primary air is relatively low, most of the air outlet surface of the strip-shaped air outlet is blocked by the cover cap, the flow rate of the strip-shaped air outlet is relatively low, and the resistance is relatively low; when the multi-fuel fluidized bed boiler needs afterburning, the temperature of primary air is increased, the flow velocity of strip-shaped outlet air is increased, when the pressure of the primary air on the cap is greater than the gravity of the cap, the cap moves upwards under the limit of a slide rail of a concave-convex groove between the cap and an air inlet pipe, the air outlet area of a strip-shaped air outlet is increased, the flow velocity is reduced, the pressure of the primary air on the cap is reduced, the pressure is balanced with the gravity of the cap, the cap stops moving, and the resistance of the primary air at the position is the same as the designed resistance; therefore, the air outlet area of the strip-shaped air outlet of the air inlet pipe is changed through the cap through the up-and-down change of the cap on the position of the air inlet pipe, the speed distribution is adjusted, and the air outlet resistance is kept unchanged; the air outlet resistance can be ignored due to the large aperture of the air outlet hole of the hood head, so that the air outlet resistance of the whole hood can be kept in a stable state.
The utility model discloses the beneficial effect who gains does:
(1) the utility model discloses the hood is through addding the block structure at the hood air-supply line top, adopts unsmooth slide rail structure between air-supply line and block, realizes when the intake changes, and the block slides the area that comes the automatically regulated hood air outlet from top to bottom through the slide rail, keeps the hood resistance to fall stably, has solved the too big problem of cloth aerofoil department resistance fluctuation that leads to because of the fluctuation of a wind, and it is even to have realized the cloth wind, maintains the stability of fluidized bed operation.
(2) The utility model discloses the hood has alleviateed the impact of a wind to the hood cap head through setting up hood cap head and the double-deck top cap structure of block, has reduced the wearing and tearing of hood cap head, has improved the life of hood, and simultaneously, double-deck top cap structure has increaseed the degree of difficulty that leaks into bed material from the air-supply line, has solved the fluidized bed material and has got into the fluidized bed that the plenum leads to through the top of air-supply line easily and leak the sediment problem.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a sectional view taken along line B-B of FIG. 3;
FIG. 5 is a front cross-sectional view of the air inlet duct;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;
FIG. 7 is a front cross-sectional view of the cap;
fig. 8 is a top view from E of fig. 7.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a technical scheme has solved current hood and has easily leaked the sediment, hood head wearing and tearing are serious, the difficult change of hood difficult to detach and automatically regulated resistance and fall the scheduling problem. The structure of the air-conditioning hood comprises a hood head 1, an air inlet pipe 2, a hood 3 and the like. The blast cap head 1 is made of ZG40Cr25Ni20, the upper end of the blast cap head is of a bell-type closed structure, the bottom of the blast cap head is of an open shell, a plurality of air exhaust holes 1-2 are formed in the lower part of the blast cap head 1 close to the edge, and the air exhaust holes 1-2 are uniformly distributed along the circumference. The top and the bottom of the blast cap head 1 adopt thickened structures, so that the blast cap head has stronger wear resistance, reduces the wear of the wall of the blast cap head and can greatly prolong the service life of the blast cap head. The air inlet pipe 2 is made of 1Cr18Ni9Ti and is in a circular pipe shape, a circular truncated cone 2-1 is arranged in the middle of the air inlet pipe, air outlets 2-2 are arranged at the top of the air inlet pipe, strip-shaped air outlets 2-3 are arranged on the upper portion of the air inlet pipe along the circumference and are evenly distributed along the circumference, and strip-shaped groove tracks are arranged in gaps among the strip-shaped air outlets. The material of the cap 3 is ZG40Cr25Ni20, the shape is a round cap shape, and the top of the round cap is provided with a cylindrical bulge. The inner wall of the cap 3 is provided with six convex groove slide rails which are matched with the groove slide rails at the top of the air inlet pipe 2. The roughness of the contact surface of the concave-convex groove of the cap 3 and the air inlet pipe 2 is Ra1.6, and the weight of the cap is checked according to the area and the air speed of the air outlet 2-2 at the top of the air inlet pipe 2.
The blast cap head 1, the air inlet pipe 2 and the cap 3 are coaxially arranged. The air inlet pipe 2 is connected with an air distribution plate at the bottom in a welding mode, an air cap head 1 is connected with the air inlet pipe 2 through threads and is connected with a circular table 2-1 in a spot welding mode, a cap 3 is installed at the top of the air inlet pipe 2, guide rails formed by grooves and convex grooves are arranged on the cap 3 and a top air outlet 2-2, the top of the air inlet pipe 2 is uniformly distributed with six grooves along the circumference, the cap 3 is internally uniformly distributed with six convex grooves along the circumference, clearance fit is formed between the grooves of the air inlet pipe 2 and the convex grooves of the cap 3, the distance is 1mm, the air inlet pipe can flexibly move up and down in the guide rails conveniently, sliding resistance is reduced, the thermal expansion coefficient of the cap 3 is larger than that of the air inlet pipe 2, and eccentric clamping caused by thermal expansion is prevented. In the installation state, the inner wall of the bottom of the cap 3 is attached to the air outlet 2-2 at the top of the air inlet pipe 2, in the high-temperature state, the cap 3 is blown up through a slide rail of the air inlet pipe 2, and the area of the air outlet 2-2 at the top is checked through the air pressure and the weight of the cap 3. The cylindrical protrusion 3-1 at the top of the cap 3 can limit the cap 3 to prevent the cap 3 from being blown off.
The primary air enters the blast cap through the air inlet pipe 2, is blown out through the strip-shaped air outlets 2-3, enters a gap between the blast cap head 1 and the air inlet pipe 2, and is blown out of the blast cap through the circular air outlet holes 1-2 at the bottom of the blast cap head 1. Through the labyrinth structure, the slag leakage of the bed material is reduced. The resistance of the blast cap is mainly determined by the air outlet area of the strip-shaped air outlets 2-3. The air outlet area of the strip-shaped air outlet 2-3 is designed according to the design condition of the primary air temperature. In the operation process, the primary air volume is basically unchanged, when the primary air temperature is relatively low, the cap 3 blocks most of the air outlet surface of the outlet air 2-3, the flow velocity of the outlet air 2-3 is relatively low, and the resistance is relatively low. When the multi-fuel fluidized bed boiler needs afterburning, the primary air temperature is increased, the flow velocity of the strip-shaped air outlets 2-3 is increased, when the pressure of the primary air on the cap 3 is greater than the gravity of the cap 3, the cap 3 moves upwards under the limit of a sliding rail of a concave-convex groove between the cap 3 and the air inlet pipe 2, the air outlet area of the outlet air 2-3 is increased, the flow velocity is reduced, the pressure of the primary air on the cap 3 is reduced, the primary air is balanced with the gravity of the cap 3, the cap 3 stops moving, and the resistance of the primary air at the position is the same as the designed. Therefore, the air outlet area of the strip-shaped air outlets 2-3 of the air inlet pipe is changed through the cap 3 by changing the cap 3 up and down at the position of the air inlet pipe 2, the speed is adjusted, and the air outlet resistance is kept unchanged. The air outlet resistance can be ignored due to the large aperture of the air outlet holes 1-2 of the hood head of the hood, so that the air outlet resistance of the whole hood can be kept in a stable state. The cap 3 can be matched with the pressure blown up by the air inlet pipe 2 by checking different weights, so that different resistance drops are adjusted to meet different air outlet resistance requirements.
Preferably, the exhaust hole of the hood head is a waist circular hole, and the waist circular hole is flat, so that the air supply force can be increased.
Preferably, the air exhaust holes are inclined downwards from inside to outside. The air outlet is internally inclined downwards outwards, so that materials can be prevented from being accumulated between the hoods.
Preferably, the exhaust holes are inclined downwards from inside to outside and form an angle of 10-15 degrees with the horizontal direction.
Preferably, the number of the exhaust holes is six, and the diameter of each exhaust hole is 15-20 mm.
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 8, and a fluidized bed hood capable of automatically adjusting resistance drop comprises a hood head 1, an air inlet pipe 2 and a hood 3. The structure of the air-conditioning hood comprises a hood head 1, an air inlet pipe 2, a hood 3 and the like. The blast cap head 1 is made of ZG40Cr25Ni20, the upper end of the blast cap head is of a bell-type closed structure, the bottom of the blast cap head is of an open shell, a plurality of air exhaust holes 1-2 are formed in the lower part of the blast cap head 1 close to the edge, and the air exhaust holes 1-2 are uniformly distributed along the circumference. The top and the bottom of the blast cap head 1 adopt thickened structures, so that the blast cap head has stronger wear resistance, reduces the wear of the wall of the blast cap head and can greatly prolong the service life of the blast cap head. The air inlet pipe 2 is made of 1Cr18Ni9Ti and is in a circular pipe shape, a circular truncated cone 2-1 is arranged in the middle of the air inlet pipe, air outlets 2-2 are arranged at the top of the air inlet pipe, strip-shaped air outlets 2-3 are arranged on the upper portion of the air inlet pipe along the circumference and are evenly distributed along the circumference, and strip-shaped groove tracks are arranged in gaps among the strip-shaped air outlets. The material of the cap 3 is ZG40Cr25Ni20, the shape is a round cap shape, and the top of the round cap is provided with a cylindrical bulge. The inner wall of the cap 3 is provided with six convex groove slide rails which are matched with the groove slide rails at the top of the air inlet pipe 2. The roughness of the contact surface of the concave-convex groove of the cover cap 3 and the air inlet pipe 2 is Ra1.6, and the weight of the cover cap is checked according to the area of an outlet 2-1 at the top of the air inlet pipe 2 and the air speed.
The air cap is integrally of a labyrinth structure, and the inlet air is blown to the outlet through a tortuous flow passage, so that the backflow of bed materials to the air inlet pipe is reduced. After primary air enters from the air inlet pipe 2, the primary air is blown out from the strip-shaped air outlets 2-3 at the top of the air inlet pipe 2 and then flows downwards from the flow channel outside the air inlet pipe into the air exhaust holes 1-2 of the hood head to be blown out, so that the problem of slag leakage of sand from the air outlets into the air inlet pipe 2 is avoided, and the problem of slag leakage is solved fundamentally. The arrangement of the cap 3 greatly reduces the abrasion of the blast cap head 1 and the blast pipe 2. Meanwhile, the cover cap 3 can further prevent bed materials from leaking into the air inlet pipe 2, and the probability of slag leakage is reduced to the minimum.
The circular truncated cone part 2-1 of the air inlet pipe 2 is spot-welded with the bottom of the blast cap head 1, when the blast cap head 1 needs to be replaced, the spot-welded position can be knocked off, and the blast cap is detached through the hexagonal structure at the top of the blast cap head 1, so that the blast cap is easier to replace.
For a multi-fuel combustion fluidized bed, under the condition of needing afterburning, the air temperature of inlet air is increased, under the condition of unchanging air inlet quantity, the air speed at the strip-shaped air outlet of an air inlet pipe 2 is increased, the pressure in the air inlet pipe 2 is increased, a cap 3 is jacked up, the cap 3 upwards moves along the air inlet pipe 2 through a guide rail, so that the air outlet area of the strip-shaped air outlet 2-3 at the top of the air inlet pipe 2 is increased, the air outlet speed is reduced, and the pressure in the air inlet pipe 2 is also reduced. Through the process, the pressure in the blast cap is stable, and the bed pressure is stabilized.
The second embodiment is as follows: the embodiment is described with reference to fig. 1, 2, 3 and 4, the air outlets of the hood head are circular, the number of the air outlets is six, and the included angle between the central axis of each air outlet 1-2 and the horizontal direction is 10-15 degrees. So design, the contained angle is preferred 15 degrees, can make the air-out even, effectively prevents bed material entering hood, prevents to leak the sediment.
Claims (9)
1. The utility model provides a but fluidized bed hood that automatically regulated resistance falls which characterized in that: comprises a blast cap head, an air inlet pipe and a cap which are coaxially arranged; the upper end of the hood head of the hood is of a bell-jar type closed structure, the bottom of the hood head is of an open shell, a plurality of air exhaust holes are formed in the lower part of the hood head close to the edge, and the air exhaust holes are uniformly distributed along the circumference; the air inlet pipe is in a circular pipe shape, the middle part of the air inlet pipe is provided with a circular truncated cone, the top of the air inlet pipe is provided with an air outlet, the upper part of the air inlet pipe is provided with strip-shaped air outlets along the circumference, the air outlets are uniformly distributed along the circumference, and strip-shaped groove tracks are arranged in gaps among the strip-shaped air outlets; the blast cap head is connected with the air inlet pipe through threads and is connected with the circular truncated cone in a spot welding manner; the cover cap is arranged on the top of the air inlet pipe, the appearance of the cover cap is a round cover shape, and a cylindrical bulge is arranged on the top of the round cover; the inner wall of the cover cap is provided with a convex groove track which is matched with the concave groove track of the air inlet pipe.
2. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the hood head is made of ZG40Cr25Ni 20.
3. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the top and the bottom of the blast cap head adopt thickened structures.
4. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the air inlet pipe is made of 1Cr18Ni9 Ti.
5. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the material of the cap is ZG40Cr25Ni 20.
6. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the roughness of the contact surface of the nut cap and the concave-convex groove of the air inlet pipe is Ra1.6.
7. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the air inlet pipe is welded with the air distribution plate at the bottom.
8. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein: the thermal expansion coefficient of the material of the cover cap is larger than that of the material of the air inlet pipe.
9. The fluidized bed hood capable of automatically adjusting drag drop of claim 1, wherein:
the air exhaust hole of the hood head is a waist-round hole, inclines downwards from inside to outside and forms an angle of 10-15 degrees with the horizontal direction; the number of the exhaust holes is six, and the diameter of the exhaust holes is 15-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104566.XU CN212298966U (en) | 2020-01-17 | 2020-01-17 | Fluidized bed hood capable of automatically adjusting resistance drop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104566.XU CN212298966U (en) | 2020-01-17 | 2020-01-17 | Fluidized bed hood capable of automatically adjusting resistance drop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212298966U true CN212298966U (en) | 2021-01-05 |
Family
ID=73957146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020104566.XU Active CN212298966U (en) | 2020-01-17 | 2020-01-17 | Fluidized bed hood capable of automatically adjusting resistance drop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212298966U (en) |
-
2020
- 2020-01-17 CN CN202020104566.XU patent/CN212298966U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113137599A (en) | Fluidized bed hood capable of automatically adjusting resistance drop | |
| CN102563629A (en) | Spiral-flow type built-in cylindrical blast cap | |
| CN212298966U (en) | Fluidized bed hood capable of automatically adjusting resistance drop | |
| KR20090019377A (en) | The air distribution nozzle for fluidizing of fluidized bed boiler and its assembling method | |
| CN201429075Y (en) | Ceramic compound air cap of circulating fluidized bed boiler | |
| CN109268855A (en) | The slagging structure of single air compartment differential biomass fuel circulating fluidized bed boiler | |
| JP6207050B2 (en) | Circulating fluidized bed furnace | |
| KR20050002234A (en) | Fluidizing gas Nozzle assembly in a fluidized bed reactor | |
| CN2930848Y (en) | Bell-type windshield for fluid-bed reactor | |
| CN208776673U (en) | A kind of high-temperature burner | |
| CN206494911U (en) | A kind of circle fluidized-bed gasification furnace ladder wind beam air distribution plate | |
| CN206476963U (en) | A kind of circle fluidized-bed gasification furnace air distribution plate | |
| CN206037020U (en) | CFB boiler air film abrasionproof water -cooling wall structure | |
| CN205299508U (en) | Environmental protection and energy saving type circulating fluidized bed boiler is with separation returning charge system | |
| CN201262395Y (en) | Bell jar type hood used for circulating fluidized bed boiler | |
| CN205717179U (en) | The cloth wind structure of CFBB | |
| CN106678786A (en) | Bell jar type wind cap for environment-friendly energy-saving circulating fluidized bed boiler | |
| CN212901479U (en) | Hood and air distribution system thereof | |
| CN206540118U (en) | A kind of environment-friendly and energy-efficient CFBB bell-type windshield | |
| CN208764904U (en) | A kind of waste heat boiler with fluidized gas distributor | |
| CN103047644A (en) | Double-airflow channel air cap | |
| CN210462985U (en) | Circulating fluidized bed air distribution device for thermal power plant | |
| CN220417302U (en) | Novel bell-type hood of boiler air distribution plate | |
| CN201517768U (en) | Circulating fluidized bed boiler pinnacle outer cover windshield | |
| CN108397767B (en) | Low-bed-pressure low-air-volume combustion operation method for circulating fluidized bed boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |