CN213000500U - Coal pulverizer pulverized coal distributor - Google Patents
Coal pulverizer pulverized coal distributor Download PDFInfo
- Publication number
- CN213000500U CN213000500U CN202021049900.2U CN202021049900U CN213000500U CN 213000500 U CN213000500 U CN 213000500U CN 202021049900 U CN202021049900 U CN 202021049900U CN 213000500 U CN213000500 U CN 213000500U
- Authority
- CN
- China
- Prior art keywords
- wall
- coal
- adjusting baffle
- rotating shaft
- conical
- 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
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a coal pulverizer coal powder distributor, which comprises an outer cone, an inner cone and a coal inlet pipe which are coaxially arranged from outside to inside in sequence; the outer wall of the upper part of the coal inlet pipe is sleeved with a conical inner wall with an upward flaring end, the conical inner wall is sleeved with a conical outer wall with an upward flaring end, and an annular flaring channel is enclosed between the conical inner wall and the conical outer wall; a horizontal first annular top cover is hermetically covered above the annular flaring channel, and a plurality of vertical primary air pipes are arranged on the first annular top cover; an adjusting baffle is arranged under the primary air pipe, a plurality of parallel inclined through grooves are formed in the adjusting baffle, a horizontal rotating shaft is arranged in the radial direction of the adjusting baffle, and the rotating shaft penetrates through the conical outer wall in a sealing mode and is installed on the conical outer wall through a shaft seat. The utility model discloses well pivot rotates corresponding angle, can change buggy direction of motion in the buggy air current, adjusts the buggy concentration in getting into the tuber pipe once, forms the two-phase flow of the comparatively even buggy of distribution, air mixing equipartition.
Description
Technical Field
The utility model belongs to the thermoelectricity field relates to a coal pulverizer buggy distributor.
Background
Under the current great trend of enhancing the flexibility of thermal power generation, the unit puts forward higher requirements on stable combustion, safety and economic operation of the boiler under the ultra-low load state, and the air distribution and the powder distribution of the boiler under the low-load operation state ensure that the fullness and the balance of the combustion of the boiler are particularly important. When the boiler is in low-load combustion, the temperature of a hearth is reduced, the ignition of pulverized coal is delayed under the condition of low temperature and oxygen deficiency, the burnout capability is reduced, the combustion working condition in the boiler is worse than that before modification, new influences are generated on the steam parameters, fly ash and slag, the exhaust gas temperature, the thermal engineering quality and other indexes of the boiler, and the stable combustion capability of the boiler is reduced.
The air-powder mixing ratio (coal powder concentration) of the primary air pipe of the burner cannot be accurately controlled, and the fuel waste and the environmental protection pressure are high. The uneven distribution of air and powder among the burners directly influences the burners and stable combustion, so that flame deflection, long fire length, furnace wall scouring, large thermal load of a hearth and large steam temperature deviation are caused; the flame and the burner are separated, and the temperature field in the furnace is disordered, so that the coal consumption is increased; too low a concentration of coal fines will result in too much production of NOx.
The electric reducing valve generally adopted by the current pulverizing system mainly has the function of adjusting primary wind speed, and the valve has almost no effect on adjusting the concentration of pulverized coal and is easy to block pipes. In recent years, a baffle is additionally arranged on a primary air pipe of a coal mill to adjust the coal powder concentration of the primary air pipe, and a test installation is carried out in individual domestic power plants, so that the result shows that the device can only adjust the coal powder flow in each air pipe, but cannot change the flow form and the coal powder concentration of the coal powder, the structure cannot achieve the effect of adjusting the coal powder concentration, the structural resistance and the abrasion of the device are large, and the device cannot be popularized and applied in the power industry.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a coal pulverizer coal powder distributor solves the deviation of a wind speed deviation and buggy distribution of each coal powder pipeline to more effectual regulation buggy concentration.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a coal pulverizer coal dust distributor comprises an outer cone, an inner cone and a coal inlet pipe which are coaxially arranged from outside to inside in sequence; the outer wall of the upper part of the coal inlet pipe is sleeved with a conical inner wall with an upward flaring end, and the lower end edge of the conical inner wall is hermetically fixed with the outer wall of the coal inlet pipe; a conical outer wall with an upward flaring end is sleeved outside the conical inner wall, and an annular flaring channel is formed between the conical inner wall and the conical outer wall; a horizontal first annular top cover is hermetically covered above the annular flaring channel, and a plurality of vertical primary air pipes which can be hermetically communicated with the annular flaring channel are arranged on the first annular top cover;
a circular adjusting baffle is arranged right below the primary air pipe, a plurality of parallel inclined through grooves are formed in the adjusting baffle, a horizontal rotating shaft is arranged in the radial direction of the adjusting baffle, and the end part of the rotating shaft penetrates through the conical outer wall in a sealing mode and is installed on the conical outer wall through a shaft seat; the end part of the rotating shaft extending out of the conical outer wall is a rotating shaft operating end, and the rotating shaft can be rotated by operating the rotating shaft operating end to drive the adjusting baffle to rotate around the rotating shaft.
The utility model discloses still include following technical characteristic:
specifically, the thickness of the adjusting baffle plate is 10-15 mm; the ratio of the horizontal width of each oblique through groove to the width of each adjusting baffle between every two adjacent oblique through grooves is 1.5: 1; the diameter of the adjusting baffle is 4/5 of the diameter of the primary air pipe, and the circle center of the adjusting baffle is positioned on the axis of the primary air pipe;
the inclined through grooves are parallel to each other and distributed at equal intervals, and the included angle between each inclined through groove and the upper surface or the lower surface of the adjusting baffle is 45 degrees.
Specifically, the flaring ends of the outer cone and the inner cone are upward, and the coal inlet pipe is positioned at the central axis; an air inlet is arranged below the outer cone to enable wind to blow upwards from an annular gap between the outer cone and the inner cone, and tangential baffles are arranged at the upper ends of the outer cone and the inner cone to enable wind energy to swirl.
Specifically, a horizontal second annular top cover is arranged outside the conical outer wall, and the second annular top cover is sealed and covered on the upper end of the outer cone.
Specifically, the number of the primary air pipes is four, and the four primary air pipes are uniformly distributed along the circumferential direction of the first annular top cover.
Specifically, the axis of the rotating shaft is perpendicular to the axis of the coal inlet pipe, and the adjusting baffle is parallel to the axis of the rotating shaft connected with the adjusting baffle.
Specifically, the adjusting baffle and the rotating shaft are detachably mounted.
Specifically, the rotation angle range of the adjusting baffle is as follows: the included angle between the water level and the horizontal plane is 0-90 degrees.
Specifically, a self-compensation type redundant sealing structure is arranged on the outer side of the connecting position of the rotating shaft and the shaft seat.
Specifically, the operating end of the rotating shaft is connected with an electric actuating mechanism, and the electric actuating mechanism is driven by the valve shaft;
or the operating end of the rotating shaft is driven to rotate by hand.
Compared with the prior art, the utility model, following technological effect has:
the utility model discloses effectively solved the deviation of each buggy pipeline wind speed deviation and buggy distribution, set up on the adjusting baffle a plurality of mutual parallels and equidistant distribution's slant through groove structural design and make when wind powder mixture gas-solid two-phase flow flows through the baffle, gaseous along the slant through groove flow through can continue to get into a tuber pipe, the buggy solid particle direction of motion changes and fails to get into a tuber pipe in the gas-solid two-phase flow, plays the effect of appropriate filtration buggy. The coal powder disperser and the corresponding control valve device are additionally arranged in front of the primary air coal powder pipeline, so that the distribution of the coal powder from the coal mill to the combustor is optimized, the coal powder and the air flow are accurately balanced, the coal powder distribution is improved, and the boiler performance is improved. The device has the function of changing the flow form and concentration of the pulverized coal, and can change bias flow, rope-shaped flow and surge flow in the pipeline into two-phase flow with more uniform distribution of the pulverized coal and air.
The rotary shaft of the utility model rotates by a corresponding angle, and the moving direction of the coal powder in the coal powder airflow can be changed, so that the concentration of the coal powder entering the primary air pipe is adjusted, and the function of adjusting the concentration of the primary air coal powder is achieved; when the included angle between the adjusting baffle and the horizontal plane is 0 degree, the concentration of the pulverized coal entering the primary air pipe is minimum, and when the included angle between the adjusting baffle and the horizontal plane is 90 degrees, the concentration of the pulverized coal entering the primary air pipe is maximum.
The utility model provides a when 9 angles of adjusting baffle of a plurality of air pipes 8 below are unanimous, it is the same to enable each air pipe 8's buggy concentration, realizes that the boiler stably burns, improves combustion efficiency.
Drawings
Fig. 1 is a front view of the present invention, wherein the angle between the adjusting baffle and the horizontal plane is 90 degrees;
FIG. 2 is a front view of the present invention, wherein the angle between the adjusting baffle and the horizontal plane is 0 degree;
fig. 3 is a top view of the present invention;
FIG. 4 is a schematic view of the installation structure of the adjusting baffle and the rotating shaft of the present invention;
FIG. 5 is a cross-sectional view A-A of the adjustment flap of FIG. 4;
fig. 6 is the schematic view of adjusting the angle of the adjusting baffle of the present invention, wherein (a) is the angle between the adjusting baffle and the horizontal plane is 90 degrees, and (b) is the angle between the adjusting baffle and the horizontal plane is 0 degree.
The meaning of the individual reference symbols in the figures is: the coal feeding device comprises an outer cone 1, an inner cone 2, a coal feeding pipe 3, a conical inner wall 4, a conical outer wall 5, an annular flaring channel 6, a first annular top cover 7, a primary air pipe 8, an adjusting baffle 9, a slant through groove 9-1, a rotating shaft 10, a shaft seat 11, a second annular top cover 12 and an electric actuator 13.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
Example 1:
according to the technical scheme, as shown in fig. 1 to 6, the coal powder distributor for the coal mill comprises an outer cone 1, an inner cone 2 and a coal inlet pipe 3 which are coaxially arranged from outside to inside; the outer wall of the upper part of the coal inlet pipe 3 is sleeved with a conical inner wall 4 with an upward flaring end, and the lower end edge of the conical inner wall 4 is hermetically fixed with the outer wall of the coal inlet pipe 3; a conical outer wall 5 with an upward flaring end is sleeved outside the conical inner wall 4, and an annular flaring channel 6 is enclosed between the conical inner wall 4 and the conical outer wall 5; a first horizontal annular top cover 7 is hermetically covered above the annular flaring channel 6, and a plurality of vertical primary air pipes 8 which are hermetically communicated with the annular flaring channel 6 are arranged on the first annular top cover 7.
A round adjusting baffle 9 is arranged right below the primary air pipe 8, a plurality of parallel inclined through grooves 9-1 are formed in the adjusting baffle 9, a horizontal rotating shaft 10 is arranged in the radial direction of the adjusting baffle 9, and the end part of the rotating shaft 10 penetrates through the conical outer wall 5 in a sealing manner and is installed on the conical outer wall 5 through a shaft seat 11; the end part of the rotating shaft 10 extending out of the conical outer wall 5 is a rotating shaft operating end, and the rotating shaft 10 can be rotated by operating the rotating shaft operating end to drive the adjusting baffle 9 to rotate around the rotating shaft 10; the adjusting baffle is driven to rotate by manually or electrically driving the rotating shaft through operating the operating end.
Through the technical scheme, the rotating shaft rotates by a corresponding angle, so that the moving direction of the coal powder in the coal powder airflow can be changed, the concentration of the coal powder entering the primary air pipe is adjusted, and the effect of adjusting the concentration of the coal powder of the primary air is achieved; when the included angle between the adjusting baffle and the horizontal plane is 0 degree, the concentration of the pulverized coal entering the primary air pipe is minimum, and when the included angle between the adjusting baffle and the horizontal plane is 90 degrees, the concentration of the pulverized coal entering the primary air pipe is maximum. When the angles of the adjusting baffle plates 9 below the primary air pipes 8 are consistent, the pulverized coal concentration of each primary air pipe 8 is enabled to be the same, stable combustion of the boiler is realized, and the combustion efficiency is improved. The method effectively solves the primary wind speed deviation and the coal powder distribution deviation of each coal powder pipeline, is equivalent to that a coal powder disperser and a corresponding control valve device are additionally arranged in front of the primary wind coal powder pipeline, optimizes the distribution of coal powder from a coal mill to a combustor, accurately balances the flow of the coal powder and air, improves the coal powder distribution and improves the performance of a boiler. The device has the function of changing the flow form and concentration of the pulverized coal, and can change bias flow, rope-shaped flow and surge flow in the pipeline into two-phase flow with more uniform distribution of the pulverized coal and air.
The thickness of the adjusting baffle 9 is 10 mm-15 mm, more preferably, in this embodiment, the thickness of the adjusting baffle 9 is 10mm, and in actual work, the corresponding thickness can be set according to specific needs, so that the effect of adjusting the concentration of the pulverized coal can be achieved; furthermore, in the present embodiment, the adjusting baffle 9 is made of a steel-resistant material, and a wear-resistant ceramic is attached to the windward side of the adjusting baffle 9, so that the adjusting baffle 9 can be prevented from being worn by the pulverized coal and air two-phase flow. The ratio of the horizontal width of the oblique through grooves 9-1 to the width of the adjusting baffle 9 between two adjacent oblique through grooves 9-1 is 1.5: 1; the diameter of the adjusting baffle 9 is 4/5 of the diameter of the primary air pipe 8, and the circle center of the adjusting baffle 9 is positioned on the axis of the primary air pipe 8; when the adjusting baffle 9 is located at a horizontal position, the vertical distance between the upper surface of the adjusting baffle 9 and the lower end of the primary air pipe 8 is 1/4 lengths of the diameter of the primary air pipe.
The plurality of inclined through grooves 9-1 are parallel to each other and distributed at equal intervals, and the included angle between each inclined through groove 9-1 and the upper surface or the lower surface of the adjusting baffle 9 is 45 degrees; specifically, in this embodiment, the horizontal distance between adjacent diagonal through grooves 9-1 is 8 mm.
The flaring ends of the outer cone 1 and the inner cone 2 are upward, and the coal inlet pipe 3 is positioned on the central axis; an air inlet is arranged below the outer cone 1 to enable wind to blow upwards from an annular gap between the outer cone 1 and the inner cone 2, and a tangential baffle is arranged at the upper ends of the outer cone 1 and the inner cone 2 to enable wind energy to swirl.
And a horizontal second annular top cover 12 is arranged outside the conical outer wall 5, and the second annular top cover 12 is sealed and covered on the upper end of the outer cone 1 to ensure the sealing inside the pulverized coal distributor.
The primary air pipes 8 are four, the four primary air pipes 8 are uniformly distributed along the circumferential direction of the first annular top cover 7, the same position below each primary air pipe 8 is equally divided into two parts, and the adjusting baffle plates 9 are respectively arranged at the same positions, so that the pulverized coal concentration of each primary air pipe 8 is the same by adjusting the angle of each adjusting baffle plate 9, the stable combustion of the boiler is realized, and the combustion efficiency is improved.
The axis of the rotating shaft 10 is perpendicular to the axis of the coal inlet pipe 3, and the adjusting baffle 9 is parallel to the axis of the rotating shaft 10 connected with the adjusting baffle 9, so that the adjusting baffle 9 can be driven to rotate around the radial direction by rotating the rotating shaft 10.
The adjusting baffle 9 and the rotating shaft 10 are detachably mounted, and replacement is convenient.
The rotation angle range of the adjusting baffle 9 is as follows: the included angle between the water tank and the horizontal plane is 0-90 degrees; when the included angle between the adjusting baffle 9 and the horizontal plane is 0 degree, the concentration of the pulverized coal entering the primary air pipe is minimum, and when the included angle between the adjusting baffle and the horizontal plane is 90 degrees, the concentration of the pulverized coal entering the primary air pipe is maximum.
The outer side of the joint of the rotating shaft 10 and the shaft seat 11 is provided with a self-compensating redundant sealing structure to ensure the sealing inside the pulverized coal distributor.
The operating end of the rotating shaft is connected with an electric actuator 13, and the electric actuator 13 is driven by a valve shaft; and corresponding control signals are sent according to the current coal powder concentration measurement result in the corresponding coal powder pipe, and the electric actuating mechanism 13 drives the rotating shaft to rotate by corresponding angles according to the control signals, so that the moving direction of coal powder in coal powder airflow and the concentration of the coal powder entering the primary air pipe are changed, and the concentration of the primary air coal powder is adjusted.
In other embodiments, the operation end of the rotating shaft can be manually driven to rotate, and the adjusting baffle 9 is adjusted to a corresponding angle according to requirements, so that the moving direction of the pulverized coal in the pulverized coal airflow and the concentration of the pulverized coal entering the primary air pipe are changed, and the concentration of the pulverized coal in the primary air is adjusted.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. A coal pulverizer coal dust distributor comprises an outer cone (1), an inner cone (2) and a coal inlet pipe (3) which are coaxially arranged from outside to inside in sequence; the coal feeding device is characterized in that a conical inner wall (4) with an upward flaring end is sleeved on the outer wall of the upper part of the coal feeding pipe (3), and the edge of the lower end of the conical inner wall (4) is fixed with the outer wall of the coal feeding pipe (3) in a sealing way; a conical outer wall (5) with an upward flaring end is sleeved outside the conical inner wall (4), and an annular flaring channel (6) is enclosed between the conical inner wall (4) and the conical outer wall (5); a horizontal first annular top cover (7) is hermetically covered above the annular flaring channel (6), and a plurality of vertical primary air pipes (8) which can be hermetically communicated with the annular flaring channel (6) are arranged on the first annular top cover (7);
a round adjusting baffle (9) is arranged right below the primary air pipe (8), a plurality of parallel oblique through grooves (9-1) are formed in the adjusting baffle (9), a horizontal rotating shaft (10) is arranged in the radial direction of the adjusting baffle (9), and the end part of the rotating shaft (10) penetrates through the conical outer wall (5) in a sealing manner and is installed on the conical outer wall (5) through a shaft seat (11); the end part of the rotating shaft (10) extending out of the conical outer wall (5) is a rotating shaft operating end, and the rotating shaft (10) can be rotated by operating the rotating shaft operating end to drive the adjusting baffle (9) to rotate around the rotating shaft (10).
2. The coal pulverizer coal dust distributor as claimed in claim 1, wherein the thickness of the regulating baffle (9) is 10mm to 15 mm; the ratio of the horizontal width of the oblique through grooves (9-1) to the width of the adjusting baffle (9) between two adjacent oblique through grooves (9-1) is 1.5: 1; the diameter of the adjusting baffle (9) is 4/5 of the diameter of the primary air pipe (8), and the circle center of the adjusting baffle (9) is positioned on the axis of the primary air pipe (8);
the plurality of inclined through grooves (9-1) are parallel to each other and distributed at equal intervals, and the included angle between each inclined through groove (9-1) and the upper surface or the lower surface of the adjusting baffle (9) is 45 degrees.
3. The coal pulverizer coal dust distributor as claimed in claim 1, wherein the flared ends of the outer cone (1) and the inner cone (2) are both upward, and the coal inlet pipe (3) is located at the central axis; an air inlet is arranged below the outer cone (1) to enable air to blow upwards from an annular gap between the outer cone (1) and the inner cone (2), and tangential baffles are arranged at the upper ends of the outer cone (1) and the inner cone (2).
4. The coal pulverizer coal dust distributor as claimed in claim 1, wherein a second horizontal annular top cover (12) is provided outside the conical outer wall (5), the second annular top cover (12) sealingly covering the upper end of the outer cone (1).
5. The coal pulverizer coal dust distributor as claimed in claim 1, wherein there are four primary air ducts (8), and the four primary air ducts (8) are uniformly distributed along the circumference of the first annular top cover (7).
6. The coal pulverizer coal dust distributor as claimed in claim 1, wherein the axis of the rotary shaft (10) is perpendicular to the axis of the coal inlet pipe (3), and the adjusting baffle (9) is parallel to the axis of the rotary shaft (10) to which it is connected.
7. The coal pulverizer coal dust distributor as claimed in claim 1, wherein the adjusting flap (9) is detachably mounted to the rotary shaft (10).
8. The coal pulverizer coal dust distributor as claimed in claim 1, wherein the angle of rotation of the adjusting flap (9) is: the included angle between the water level and the horizontal plane is 0-90 degrees.
9. The coal pulverizer coal dust distributor as set forth in claim 1, wherein a self-compensating redundant seal structure is provided outside the junction of the rotary shaft (10) and the shaft seat (11).
10. The coal pulverizer coal dust distributor as set forth in claim 1, wherein the operating end of the rotating shaft is connected with an electric actuator (13), and the electric actuator (13) is driven by a valve shaft;
or the operating end of the rotating shaft is driven to rotate by hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049900.2U CN213000500U (en) | 2020-06-09 | 2020-06-09 | Coal pulverizer pulverized coal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049900.2U CN213000500U (en) | 2020-06-09 | 2020-06-09 | Coal pulverizer pulverized coal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213000500U true CN213000500U (en) | 2021-04-20 |
Family
ID=75493560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021049900.2U Active CN213000500U (en) | 2020-06-09 | 2020-06-09 | Coal pulverizer pulverized coal distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213000500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659135A (en) * | 2022-03-29 | 2022-06-24 | 西安热工研究院有限公司 | Integral type buggy volume distribution adjusting device |
| CN115338197A (en) * | 2022-07-08 | 2022-11-15 | 安徽新能自动化设备股份有限公司 | Wireless transmission coal particulate matter state analysis and adjustment system |
-
2020
- 2020-06-09 CN CN202021049900.2U patent/CN213000500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659135A (en) * | 2022-03-29 | 2022-06-24 | 西安热工研究院有限公司 | Integral type buggy volume distribution adjusting device |
| CN115338197A (en) * | 2022-07-08 | 2022-11-15 | 安徽新能自动化设备股份有限公司 | Wireless transmission coal particulate matter state analysis and adjustment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213000500U (en) | Coal pulverizer pulverized coal distributor | |
| CN201706487U (en) | Anthracite powdered coal burner for a rotary kiln | |
| CN101216173B (en) | Double cyclone pulverized coal burner | |
| CN213019736U (en) | Primary air pipe pulverized coal concentration adjusting part and coal mill pulverized coal distributor | |
| CN103672886A (en) | Local oxygen-enriched combustor for cement kiln furnace | |
| CN108413442A (en) | A kind of variable-flow cyclone | |
| CN111396867A (en) | Boiler pulverized coal combustion method with adjustable combustion tangent circle diameter | |
| CN210035479U (en) | Central dense-dilute burning loss prevention cyclone burner | |
| CN107477572A (en) | Using the center feeding rotational flow coal dust burner of separation Secondary Air bilayer jet | |
| CN214370153U (en) | Side wall water-cooled wall adherence protection device based on thick and thin pulverized coal separation combustor | |
| CN112709985A (en) | Side wall water-cooled wall adherence protection device based on horizontal shade separation | |
| CN109556107B (en) | Thermal power generating unit tangential firing boiler suitable for ultralow load operation and firing system thereof | |
| CN112902154A (en) | Over-fire air system with controllable steam temperature deviation and CO concentration at two sides of opposed firing boiler | |
| CN211694879U (en) | Low-nitrogen gas burner suitable for medium-low heat value fuel | |
| CN208652613U (en) | A kind of boiler secondary air subtube supply air system | |
| CN203703959U (en) | Cement kiln local oxygen-enriched combustor | |
| US5535686A (en) | Burner for tangentially fired boiler | |
| JPS6122105A (en) | Current distribution type burner assembly with absorber injector | |
| CN115711388A (en) | Water-cooled wall area H 2 Method for controlling S concentration and adjusting device thereof | |
| CN109028051B (en) | Three-cyclone low-CO high-efficiency pulverized coal burner | |
| CN211502755U (en) | Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler | |
| CN112781036B (en) | Concentrated double-air-adjusting cyclone low-nitrogen burner with central air | |
| CN115264500A (en) | Double-cyclone burner for cement clinker production | |
| CN110836367A (en) | Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler | |
| CN220610655U (en) | Wind powder on-line measurement and control system for coal mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |