CN207365059U - A kind of environment-protecting energy-saving type briquette fine coal air burner - Google Patents
A kind of environment-protecting energy-saving type briquette fine coal air burner Download PDFInfo
- Publication number
- CN207365059U CN207365059U CN201721442130.6U CN201721442130U CN207365059U CN 207365059 U CN207365059 U CN 207365059U CN 201721442130 U CN201721442130 U CN 201721442130U CN 207365059 U CN207365059 U CN 207365059U
- Authority
- CN
- China
- Prior art keywords
- inner sleeve
- burner
- coal
- chamber
- eddy flow
- 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.)
- Withdrawn - After Issue
Links
- 239000003245 coal Substances 0.000 title claims abstract description 56
- 239000004484 Briquette Substances 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000003034 coal gas Substances 0.000 claims description 13
- 239000002817 coal dust Substances 0.000 abstract description 34
- 239000000446 fuel Substances 0.000 abstract description 9
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 36
- 238000002485 combustion reaction Methods 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000470 constituent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
The utility model discloses a kind of environment-protecting energy-saving type briquette fine coal air burner, including inner sleeve and the shell being located on the outside of inner sleeve, inner sleeve is fixed in burner mounting base with shell one end, the other end sets end face sealing plate a, toroidal cavity between inner sleeve and shell sets intermediate bulkhead, burner mounting base is equipped with burner outlet and tertiary air passage, shell is equipped with Secondary Air entrance and tertiary air entrance, coal powder cyclone device is equipped with the outside of the sealing plate a of end face, coal powder cyclone device includes eddy flow housing, eddy flow housing is equipped with coal powder entrance, gas piping is set with eddy flow housing and inner sleeve, coal powder cyclone annular chamber is formed between gas piping and eddy flow housing, gas powder mixing rotational flow ring chamber is formed between gas piping and inner sleeve, torus knot head piece is equipped between coal powder cyclone annular chamber and gas powder mixing rotational flow ring chamber.The utility model solves the problems, such as that coal dust is difficult to control as the existing burning of fuel directly burning, is also easy to produce pollutant.
Description
Technical field
It the utility model is related to a kind of environment-protecting energy-saving type briquette fine coal air burner.
Background technology
At present, pulverized coal injection in blast furnace technology is widely used in Ferrous Metallurgy manufacturing enterprise.As a kind of natural energy
Source, coal dust have the cheap advantage of relative price than other fuel；Meanwhile energy is provided using coal dust as direct fuel burning,
Comparing it, to be converted to the efficiency of the recyclings such as electric energy much higher.
But in production process (the igniting operation of such as sintering machine that directly offer heat is needed in addition to blast furnace
Deng) on, the application of coal dust is simultaneously few；This is because in other production processes, there are burning to be not easy as direct fuel for coal dust
Control, be also easy to produce NOXThe problem of Deng polluted gas.
The content of the invention
Goal of the invention：The purpose of this utility model be for coal dust as fuel in addition to blast furnace other need offer heat
Production process in directly burning be difficult to control there are burning, be also easy to produce the problems such as pollutant, there is provided one kind can realize coal dust
The environment-protecting energy-saving type briquette fine coal air burner that clean combustion can simultaneously exchange the gaseous fuels such as coal dust and coal gas.
Technical solution：To achieve these goals, the utility model employs following technical solution：A kind of environmental protection and energy saving
One end of moulded coal fine coal air burner, including inner sleeve and the shell that is located on the outside of inner sleeve, inner sleeve and shell is fixed
In burner mounting base, the other end of inner sleeve and shell sets end face sealing plate a, precombustion chamber is formed in inner sleeve, inside
Intermediate bulkhead is set in toroidal cavity between sleeve and shell, by intermediate bulkhead by toroidal cavity be divided into secondary air chamber and
Tertiary chamber；
Burner mounting base center is equipped with burner outlet, and precombustion chamber passes through burner outlet and burner mounting base outside
Connection；Tertiary air passage is equipped with burner mounting base and the corresponding position of tertiary chamber, tertiary chamber is led to by tertiary air
Road is connected with outside；
Secondary Air entrance and tertiary air entrance are equipped with the shell, and Secondary Air entrance is located at end face sealing plate a and intermediate bulkhead
Between, tertiary air entrance is equipped with secondary air channel, Secondary Air between intermediate bulkhead and burner mounting base on inner sleeve
Passage is located between end face sealing plate a and intermediate bulkhead, and secondary air chamber is by secondary air channel with being connected on the inside of inner sleeve；
It is equipped with coal powder cyclone device on the outside of the sealing plate a of end face, coal powder cyclone device includes eddy flow housing, and the one of eddy flow housing
End is connected with end face sealing plate a, and the other end of eddy flow housing is equipped with end face sealing plate b, and eddy flow housing is equipped with coal powder entrance；
Gas piping is set with eddy flow housing and inner sleeve, coal powder cyclone is formed between gas piping and eddy flow housing
Annular chamber, forms gas powder mixing rotational flow ring chamber between gas piping and inner sleeve, coal powder cyclone annular chamber mixes rotation with gas powder
Torus knot head piece is equipped between stream annular chamber, the outlet side of gas piping is located at the gas powder mixing rotational flow ring chamber on the inside of inner sleeve
At precombustion chamber interface.
Further, tertiary air passage two is additionally provided with the inner sleeve, tertiary air passage two is located at intermediate bulkhead and combustion
Between burner mounting base.
Further, the inner sleeve, shell, eddy flow housing are cylindrical shape, and the gas piping is pipe, and interior
Sleeve, shell, eddy flow housing, gas piping are concentric.
Further, the Secondary Air entrance and tertiary air enter the setting of opening's edge outer casing inner wall tangential direction；The Secondary Air
Axially setting is one or more groups of along inner sleeve for passage, and every group of secondary air channel is included along the uniformly distributed multiple rotations of inner sleeve circumferencial direction
Circulation road, swirl channel are set along gas piping outer wall tangential direction；The coal powder entrance is along eddy flow inner walls tangential direction
Set.
Further, the torus knot head piece include be arranged on eddy flow housing by proximal end face sealing plate a one end conical section a,
The conical section b that inner sleeve leans on proximal end face sealing plate a one end is arranged on, is formed between conical section a, conical section b and gas piping middle
The wide annular chamber in narrow both sides.
Further, the outlet side of the gas piping is equipped with coal gas cyclone.
Further, the burner outlet matches with inner sleeve internal diameter.
Beneficial effect：
1) the utility model design replaces coal gas using cheap Pulverized Coal, according to coal dust volatile matter height feelings
Condition, it is possible to achieve full coal dust firing or coal dust gas mixed combustion.Calculated according to waiting heat to replace, per kilogram coal dust can save combustion
About 0.2 yuan of cost is expected, if considering that the coal gas replacing out such as is used for generating electricity at the benefit of generation will be more considerable.
2) by adjust once, secondary and combustion air three times ratio, control combustion air mix with the substep of coal dust, suppression
The generation of NOx in process of coal combustion is made, has controlled the ash in coal dust to grade firing-difficult matter existing forms, solve coal dust firing
The problem of dust pollution.
3) burner can also carry out full gas-fired, and compared to more existing gas burner, gas-fired is more abundant,
In the case that identical heat is provided, 20% or so fuel can be saved, energy-saving effect is notable.
4) the utility model can be applied to such as sintering ignition furnace, various fume generating furnaces and stove needs and directly provide
In the equipment or production technology of heat.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment one；
Fig. 2 is the structure diagram of coal powder entrance；
Fig. 3 is the structure diagram of Secondary Air entrance；
Fig. 4 is the structure diagram of the utility model embodiment two；
In figure：1- gas pipings, 2- end faces sealing plate b, 3- pulverized coal channels, 4- eddy flow housings, 4-1- conical sections a, 5- end faces
Sealing plate a, 6- secondary air duct, 7- inner sleeves, 7-1- conical sections b, 8- shell, 9- intermediate bulkheads, 10- coal gas cyclones, 11- tri-
Secondary wind pipeline, 12- burner mounting bases, 13- coal powder cyclone annular chambers, 14- torus knot head pieces, 15- secondary air channels, 15-1-
Swirl channel, 16- gas powder mixing rotational flow ring chambers, 17- secondary air chambers, 18- precombustion chambers, 19- tertiary chambers, 20- tertiary airs lead to
Road, 21- burner outlets, 22- tertiary airs passage two.
Embodiment：
Further explanation is done to the utility model below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of environment-protecting energy-saving type briquette fine coal air burner of the utility model embodiment one, including inner sleeve
7 and the shell 8 in the outside of inner sleeve 7 is located on, inner sleeve 7 and one end of shell 8 are fixed in burner mounting base 12, inner sleeve
Cylinder 7 and the other end of shell 8 set end face sealing plate a5, precombustion chamber 18 are formed in inner sleeve, between inner sleeve 7 and shell 8
Toroidal cavity in set intermediate bulkhead 9, toroidal cavity is divided into by secondary air chamber 17 and tertiary chamber by intermediate bulkhead 9
19。
12 center of burner mounting base is equipped with burner outlet 21, and burner outlet 21 matches with 7 internal diameter of inner sleeve, in advance
Combustion room 18 is connected by burner outlet 21 with the outside of burner mounting base 12.Burner mounting base 12 is cylindrical to be equipped with connection method
Orchid, for connecting combustion chamber, is equipped with tertiary air passage 20 in burner mounting base 12 and 19 corresponding position of tertiary chamber, and three
Secondary air compartment 19 is connected by tertiary air passage 20 with the outside of burner mounting base 12.
Secondary Air entrance and tertiary air entrance are equipped with shell 8, Secondary Air entrance is located at end face sealing plate a5 and middle interval
Between plate 9, between intermediate bulkhead 9 and burner mounting base 12, Secondary Air entrance is used to connect Secondary Air tertiary air entrance
Pipeline 6, tertiary air entrance are used to connect tertiary air pipeline 11.Secondary air channel 15, secondary air channel 15 are equipped with inner sleeve 7
Between end face sealing plate a5 and intermediate bulkhead 9, secondary air chamber 17 is connected by secondary air channel 15 with the inner side of inner sleeve 7.
Coal powder cyclone device is equipped with the outside of the sealing plate a5 of end face, coal powder cyclone device includes eddy flow housing 4, eddy flow housing 4
One end be connected with end face sealing plate a5, the other end of eddy flow housing 4 is equipped with end face sealing plate b2, and eddy flow housing 4 enters equipped with coal dust
Mouthful, coal powder entrance connection pulverized coal channel 3.
Gas piping 1 is set with eddy flow housing 4 and inner sleeve 7, gas piping 1 is fixed on the sealing plate b2 of end face, coal
The inlet end of feed channel 1 is located on the outside of the sealing plate b2 of end face.Coal powder cyclone annular chamber is formed between gas piping 1 and eddy flow housing 4
13rd, gas powder mixing rotational flow ring chamber 16 is formed between gas piping 1 and inner sleeve 7, coal powder cyclone annular chamber 13 is mixed with gas powder
Torus knot head piece 14 is equipped between rotational flow ring chamber 16, the outlet side of gas piping 1 is located at the gas powder mixing rotation of the inner side of inner sleeve 7
Flow at annular chamber 16 and 18 interface of precombustion chamber, and coal gas cyclone 10 is equipped with the outlet side of gas piping 1.
As shown in Figures 1 to 3, in the utility model embodiment one, the inner sleeve 7, shell 8, eddy flow housing 4 are cylinder
Shape, the gas piping 1 is pipe, and inner sleeve 7, shell 8, eddy flow housing 4, gas piping 1 are concentric.The Secondary Air
Entrance and tertiary air enter the setting of 8 inner wall tangential direction of opening's edge shell；The secondary air channel 15 sets one group along inner sleeve 7 is axial
Or it is multigroup, every group of secondary air channel 15 is included along the uniformly distributed multiple swirl channel 15-1 of 7 circumferencial direction of inner sleeve, swirl channel
15-1 is set along 1 outer wall tangential direction of gas piping；The coal powder entrance is set along 4 inner wall tangential direction of eddy flow housing.
As shown in Figure 1, the torus knot head piece 14 includes being arranged on the taper that eddy flow housing 4 leans on proximal end face sealing plate a5 one end
Section a4-1, be arranged on the conical section b7-1 that inner sleeve 7 leans on proximal end face sealing plate a5 one end, conical section a4-1, conical section b7-1 and coal
The wide annular chamber in narrow both sides among being formed between feed channel 1.
The operation principle of the utility model embodiment one is：
The mounting base 12 of burner is installed on combustion chamber by connecting flange, coal dust is delivered to coal using First air
After eddy flow occurs in the coal powder cyclone annular chamber 13 of powder pipeline 3, coal dust and First air in coal powder cyclone device 4 and is sufficiently mixed
By torus knot head piece 14, coal dust is uniformly distributed on torus knot head piece section；Combustion-supporting Secondary Air passes through Secondary Air inlet duct 6
Into burner, then tangentially rotate into by secondary air channel 15 the gas powder mixing eddy flow between inner sleeve 7 and gas piping 1
Annular chamber 16, in gas powder mixing rotational flow ring chamber 16, Secondary Air fully stirs the primary mixture of coal dust and First air
It is dynamic, pushed ahead in a manner of rotating flow, the oxygen in combustible and combustion air in coal dust comes into full contact with；When gas powder mixes
When thing reaches the precombustion chamber 18 of the inner side of inner sleeve 7, due to the change of regional space, fltting speed slows down, the fugitive constituent in coal dust
Material gasifies gradually, and under the hyperthermia radiation of back segment combustion chamber, vapour starts to burn；Gone out in primary mixture by burner
After mouth 21 enters back segment combustion chamber, other combustibles in coal dust start to burn, the combustion-supporting sky added by tertiary air passage
Gas provides sufficient oxygen to continue coal dust, makes coal dust completely burned in the combustion chamber after burner；Meanwhile tertiary air and rotation
The circulated in countercurrent that turn of tidal stream produces, exacerbates the burning of coal dust in precombustion chamber.Pass through the difference point of First air, Secondary Air and tertiary air
With ratio, it is possible to achieve the combustion phases of different fugitive constituent coal dusts is controlled, suppresses the oxidation reaction of N element, controls coal
The existing forms of ash in powder, achieve the purpose that coal fines cleaning burns.
During full gas-fired, the gaseous fuel such as coal gas enters burner, the shape after coal gas cyclone 10 from gas piping 1
Into high speed rotating jet, start to burn in precombustion chamber 18, in the combustion chamber after burner, the addition of a large amount of tertiary airs makes coal
Gas fully burns completely.By the proportioning of Secondary Air, tertiary air, the process of gas-fired is adjusted.Gas-fired intensity is high, in fire
Flame promotes uniform heat distribution on section.
When the Pulverized Coal fugitive constituent used is relatively low, coal gas can be passed through inner sleeve 7 by the way of coal gas is with burning
In the precombustion chamber 18 of inner side, the addition of coal gas is played coal dust combustion-supporting effect, is easy to equivalent to the fugitive constituent for adding coal dust
Realize the clean combustion of coal dust.
Embodiment two shown in Fig. 4, is on the basis of embodiment one, tertiary air passage is additionally provided with inner sleeve 7
2 22, for tertiary air passage 2 22 between intermediate bulkhead 9 and burner mounting base 12, tertiary air passage 2 22 connects tertiary air
Room 19 and precombustion chamber 18, a part of tertiary air is led in precombustion chamber.
The operation principle of the utility model embodiment two is distinguished as with embodiment one：
Part tertiary air, the oxygen that the thing burning of supplement coal dust gasification needs are added in precombustion chamber, while suitably reduces by two
The ratio of secondary wind, more conducively suppresses the oxidation reaction of N element, more effectively controls the existing forms of ash in coal dust, reach
The purpose of coal fines cleaning burning.
During full gas-fired, the addition of pre-burning indoor section tertiary air, more conducively controls gas-fired flame profile, in fire
Flame promotes and obtains more preferably heat distributional pattern on section.
The environment-friendly and energy-efficient burner production run cost that the utility model uses is low, can be with when using coal dust as fuel
The concentration of emission of NOx is efficiently controlled, and existing forms of the ash in process of coal combustion can be controlled, meets that environment protection emission will
Ask.Under three kinds of working statuses such as full coal dust firing, full gas-fired and coal dust gas mixed combustion, it can reach saving combustion
The purpose of material, 21120 fruits of energy saving effect are notable.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (7)
- A kind of 1. environment-protecting energy-saving type briquette fine coal air burner, it is characterised in that：Including inner sleeve (7) and it is located on inner sleeve (7) shell (8) on the outside of, one end of inner sleeve (7) and shell (8) are fixed in burner mounting base (12), inner sleeve (7) with The other end of shell (8) sets end face sealing plate a (5), precombustion chamber (18) is formed in inner sleeve, in inner sleeve (7) and shell (8) Between toroidal cavity in set intermediate bulkhead (9), by intermediate bulkhead (9) by toroidal cavity be divided into secondary air chamber (17) and Tertiary chamber (19)；Burner mounting base (12) center is equipped with burner outlet (21), and precombustion chamber (18) passes through burner outlet (21) and burning Connection on the outside of device mounting base (12)；Lead in burner mounting base (12) and tertiary chamber (19) corresponding position equipped with tertiary air Road (20), tertiary chamber (19) is by tertiary air passage (20) with being connected on the outside of burner mounting base (12)；Secondary Air entrance and tertiary air entrance are equipped with shell (8), Secondary Air entrance is located at end face sealing plate a (5) and middle interval Between plate (9), tertiary air entrance is located between intermediate bulkhead (9) and burner mounting base (12), and two are equipped with inner sleeve (7) Secondary wind passage (15), secondary air channel (15) are located between end face sealing plate a (5) and intermediate bulkhead (9), and secondary air chamber (17) passes through Secondary air channel (15) on the inside of inner sleeve (7) with connecting；Coal powder cyclone device is equipped with the outside of end face sealing plate a (5), coal powder cyclone device includes eddy flow housing (4), eddy flow housing (4) one end is connected with end face sealing plate a (5), and the other end of eddy flow housing (4) is equipped with end face sealing plate b (2), on eddy flow housing (4) Equipped with coal powder entrance；Gas piping (1) is set with eddy flow housing (4) and inner sleeve (7), between gas piping (1) and eddy flow housing (4) Coal powder cyclone annular chamber (13) is formed, gas powder mixing rotational flow ring chamber (16) is formed between gas piping (1) and inner sleeve (7), Torus knot head piece (14), gas piping (1) are equipped between coal powder cyclone annular chamber (13) and gas powder mixing rotational flow ring chamber (16) Outlet side be located at the gas powder mixing rotational flow ring chamber (16) on the inside of inner sleeve (7) and precombustion chamber (18) interface.
- A kind of 2. environment-protecting energy-saving type briquette fine coal air burner according to claim 1, it is characterised in that：The inner sleeve (7) tertiary air passage two (22) is additionally provided with, tertiary air passage two (22) is located at intermediate bulkhead (9) and burner mounting base (12) Between.
- A kind of 3. environment-protecting energy-saving type briquette fine coal air burner according to claim 1 or 2, it is characterised in that：The inner sleeve Cylinder (7), shell (8), eddy flow housing (4) are cylindrical shape, and the gas piping (1) is pipe, and inner sleeve (7), shell (8), eddy flow housing (4), gas piping (1) are concentric.
- A kind of 4. environment-protecting energy-saving type briquette fine coal air burner according to claim 3, it is characterised in that：The Secondary Air enters Mouth and tertiary air enter the setting of opening's edge shell (8) inner wall tangential direction；The secondary air channel (15) is axially set along inner sleeve (7) One or more groups of, every group of secondary air channel (15) is included along the uniformly distributed multiple swirl channels (15-1) of inner sleeve (7) circumferencial direction, Swirl channel (15-1) is set along gas piping (1) outer wall tangential direction；The coal powder entrance is along eddy flow housing (4) inner wall tangent line Direction is set.
- A kind of 5. environment-protecting energy-saving type briquette fine coal air burner according to claim 3, it is characterised in that：The ring-shaped throttling Mouth (14) depends on the conical section a (4-1) of proximal end face sealing plate a (5) one end including being arranged on eddy flow housing (4), is arranged on inner sleeve (7) By the conical section b (7-1) of proximal end face sealing plate a (5) one end, between conical section a (4-1), conical section b (7-1) and gas piping (1) The wide annular chamber in narrow both sides among being formed.
- A kind of 6. environment-protecting energy-saving type briquette fine coal air burner according to claim 1, it is characterised in that：The gas piping (1) outlet side is equipped with coal gas cyclone (10).
- A kind of 7. environment-protecting energy-saving type briquette fine coal air burner according to claim 1, it is characterised in that：The burner goes out Mouth (21) matches with inner sleeve (7) internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721442130.6U CN207365059U (en) | 2017-11-02 | 2017-11-02 | A kind of environment-protecting energy-saving type briquette fine coal air burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721442130.6U CN207365059U (en) | 2017-11-02 | 2017-11-02 | A kind of environment-protecting energy-saving type briquette fine coal air burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207365059U true CN207365059U (en) | 2018-05-15 |
Family
ID=62345079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721442130.6U Withdrawn - After Issue CN207365059U (en) | 2017-11-02 | 2017-11-02 | A kind of environment-protecting energy-saving type briquette fine coal air burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207365059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642779A (en) * | 2017-11-02 | 2018-01-30 | 大峘集团有限公司 | A kind of environment-protecting energy-saving type briquette fine coal air burner |
-
2017
- 2017-11-02 CN CN201721442130.6U patent/CN207365059U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642779A (en) * | 2017-11-02 | 2018-01-30 | 大峘集团有限公司 | A kind of environment-protecting energy-saving type briquette fine coal air burner |
| CN107642779B (en) * | 2017-11-02 | 2024-01-19 | 大峘集团有限公司 | Environment-friendly energy-saving pulverized coal gas burner |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180515 Effective date of abandoning: 20240119 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180515 Effective date of abandoning: 20240119 |