CN110360843A - A kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device - Google Patents
A kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device Download PDFInfo
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- CN110360843A CN110360843A CN201910699360.8A CN201910699360A CN110360843A CN 110360843 A CN110360843 A CN 110360843A CN 201910699360 A CN201910699360 A CN 201910699360A CN 110360843 A CN110360843 A CN 110360843A
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- Prior art keywords
- furnace
- reducing gas
- conveyance conduit
- dore furnace
- gas entrance
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- 238000002309 gasification Methods 0.000 title claims abstract description 25
- 239000002817 coal dust Substances 0.000 title claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 18
- 239000004568 cement Substances 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000003245 coal Substances 0.000 claims description 21
- 238000000354 decomposition reaction Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 5
- 210000004262 dental pulp cavity Anatomy 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 58
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/063—Special atmospheres, e.g. high pressure atmospheres
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
Abstract
The present embodiments relate to a kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology devices, and described device includes: dore furnace, at least one material inlet and at least one first reducing gas entrance is arranged in the dore furnace side wall upper part；At least one second reducing gas entrance and at least one high-temperature gas entrance is arranged in the dore furnace lower sidewall；Reducing gas conveyance conduit, including at least one be connected to the first reducing gas entrance first branch pipeline and at least one be connected to the second branch pipeline of the second reducing gas entrance；High-temperature gas conveyance conduit is connected to the third bypass line of the high-temperature gas entrance including at least one.
Description
Technical field
The present embodiments relate to cement manufacture plant technical field more particularly to a kind of cement decomposing furnace coal dust efficient airs
Change low-NO_x combustion technology device.
Background technique
New dry cement production technology is a kind of cement production process more mature at present, in dore furnace combustion system
In, heat source of the heat of tertiary air and the coal dust firing release of high temperature as Decomposition of Calcium Carbonate makes raw material be changed into calcium oxide powder
Body, subsequently entering calcining in rotary system is clinker, and assembly shop is sent into after grate-cooler separates and is packaged as finished product.
Currently, cement industry generallys use the discharged nitrous oxides of grading combustion technology control dore furnace combustion process, it will
Air point two-stage required for fuel combustion enters, and the excess air coefficient of primary combustion zone is lower in furnace, forms reducing zone,
On the basis of inhibiting fuel NO to generate, the thermal NO of part in kiln exit gas can be reduced to nitrogen.
But since the inlet of raw material is located at the top of dore furnace, and reducing zone is located at the lower part of dore furnace, i.e. combustion reaction occurs
In the lower part of furnace body, furnace body hot-spot will result in this way, there are some potential safety problemss.
Summary of the invention
In consideration of it, easily forming hot-spot during combustion decomposition to solve dore furnace in the prior art, there are one
The defect of fixed security risk, while most nitrogen oxides is removed using reducibility gas characteristic, the embodiment of the present invention mentions
A kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device is supplied.
In a first aspect, the embodiment of the invention provides a kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology dresses
It sets, described device includes:
Dore furnace, the dore furnace side wall upper part be arranged at least one material inlet and at least one first also Primordial Qi
Body entrance；
At least one the second reducing gas entrance is arranged in the dore furnace lower sidewall and at least one high-temperature gas enters
Mouthful；
Reducing gas conveyance conduit is connected to the first branch pipe of the first reducing gas entrance including at least one
Road and at least one be connected to the second branch pipeline of the second reducing gas entrance；
High-temperature gas conveyance conduit is connected to the third bypass line of the high-temperature gas entrance including at least one.
In a possible embodiment, the dore furnace side wall upper part includes a material inlet and two water
First reducing gas entrance of flat setting, wherein two horizontally disposed first reducing gas entrances are symmetrically distributed in the object
Expect entrance two sides.
In a possible embodiment, the cone under the dore furnace includes main body on being arranged in and is arranged in,
Including a second reducing gas entrance, positioned at the cone on the side wall of bottom.
In a possible embodiment, described device further includes the gasification being connected to the reducing gas conveyance conduit
Furnace.
In a possible embodiment, the high-temperature gas conveyance conduit further includes the 4th bypass line, and described
Four bypass line one end are connected to the third bypass line, other end connection and the gasification furnace.
In a possible embodiment, the 4th bypass line outlet is located at the top of gasification furnace.
In a possible embodiment, the reducing gas conveyance conduit further include with the first branch pipeline with
The first main road pipeline that the second branch pipeline is connected to, the high-temperature gas conveyance conduit further include and the third branch
Second main road pipeline of pipeline connection, the first main road pipeline and the second main road pipeline are by being arranged in root canal road center
, the partition axially extended is separated to form.
In a possible embodiment, coal dust is connected far from one end of the dore furnace in the first main road pipeline
Burner, and the excess air coefficient in the coal burner is less than 1.
In a possible embodiment, the high-temperature gas conveyance conduit, including two horizontally disposed be connected to
The third bypass line of the high-temperature gas entrance is symmetrically distributed in the dore furnace two sides.
In a possible embodiment, described device further includes the smoke-box below the dore furnace, and described
Decompose furnace bottom connection.
Cement decomposer provided in an embodiment of the present invention, the first branch pipeline in reducing gas conveyance conduit are connected to
The first reducing gas entrance on dore furnace top, second branch pipeline are connected to the second reducing gas entrance of dore furnace lower part,
Reducing gas can not only be reacted in the lower part of dore furnace with the NOx in furnace in this way, reduce the concentration of NOx in furnace, but also can
Heat is provided with the raw material decomposition entered in furnace for the material inlet by top, the heat for releasing it is quickly inhaled by raw material
It receives, while improving meal calcining rate, guarantees the uniformity of heat absorption, prevent raw material from just starting to carry out after droping to bottom of furnace body
Hot-spot phenomenon caused by the endothermic reaction, it is ensured that the safety of furnace body.
Detailed description of the invention
In order to illustrate more clearly of this specification embodiment or technical solution in the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
The some embodiments recorded in this specification embodiment for those of ordinary skill in the art can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of overall knot of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device of the embodiment of the present invention
Structure schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In order to facilitate understanding of embodiments of the present invention, it is further explained below in conjunction with attached drawing with specific embodiment
Bright, embodiment does not constitute the restriction to the embodiment of the present invention.
As shown in Figure 1, being a kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology provided in an embodiment of the present invention
The general structure schematic diagram of device, in one embodiment, the apparatus may include: dore furnace 1, reducing gas conveyance conduit and
High-temperature gas conveyance conduit.
For dore furnace 1, a material inlet and two horizontally disposed first are arranged in the dore furnace side wall upper part
Reducing gas entrance, wherein two horizontally disposed first reducing gas entrances are symmetrically distributed in the material inlet two sides.Object
Expect that feeder pipe 2 is installed in inlet, calcium carbonate to be decomposed is entered in dore furnace 1 by feeder pipe 2.
The high temperature of a second reducing gas entrance and the setting of two horizontal symmetricals is arranged in the dore furnace lower sidewall
Gas access, the high-temperature gas in the embodiment of the present invention refer to oxygen amount required for for providing the fuel after-flame in dore furnace and
The gas of heat.
Wherein, cone of the dore furnace 1 including the main body on being arranged in and under being arranged in, second reducing gas enter
Mouthful, positioned at the cone on the side wall of bottom, for the intracorporal nitrogen oxides of furnace to be restored.
Reducing gas conveyance conduit is connected to the first branch pipeline 3 of the first reducing gas entrance including two, with
And two second branch pipelines 4 for being connected to the second reducing gas entrance.
High-temperature gas conveyance conduit, including two be respectively communicated to two high-temperature gas entrances, it is horizontally disposed
Third bypass line 5, two third bypass lines 5 are symmetrically distributed in the two sides of the dore furnace 1.
For the reducing gas conveyance conduit, the other end is connected to gasification furnace 7, coal dust be sent in gasification furnace 7 into
The burning of row part generates reducibility gas, and reducibility gas is delivered to point through first branch pipeline 3 and second branch pipeline 4 respectively
Solve the upper and lower part of furnace 1.
It further include for the reducing gas conveyance conduit to guarantee heat needed for coal dust firing in gasification furnace 7
Four bypass lines 8, described 4th bypass line, 8 one end are connected to the third bypass line 5, other end connection and the gasification
Furnace 7, the 4th bypass line 8 outlet are located at 7 top of gasification furnace.
It is calcined in order to which the calcium oxide powder after decomposing smoothly to be sent into rotary kiln, the bottom below the dore furnace 1
Portion is additionally provided with the smoke-box 6 communicated therewith, and the other end of smoke-box 6 is connected in rotary kiln.
Raw coal enters coal pulverizer from coal bunker, and raw coal is worn into coal dust by coal pulverizer, is sprayed onto gas by coal dust jet pipe by delivering coal wind
Change in furnace 7.Coal dust absorbs the heat that the 4th bypass line 8 of high-temperature gas conveyance conduit provides in gasification furnace 7, carries out part
Combustion heat release amount, the coal gas and semicoke mixture a part that part burning generates are defeated simultaneously by two first branch pipelines 3
It send to the top of dore furnace 1, while calcium carbonate to be decomposed is entered in dore furnace 1 by feeder pipe 2, heat occurs after the two mixing
Exchange, calcium carbonate absorb a part of heat here and carry out decomposed, then fall to the bottom of dore furnace 1.It burns part
The coal gas and semicoke mixture another part of generation are delivered to the lower part of dore furnace 1 by second branch pipeline 4, with the nitrogen in furnace
Oxide reaction, is reduced to nitrogen；High-temperature gas conveyance conduit is provided in dore furnace 1 by third bypass line 5 simultaneously
Calcium carbonate after-flame required for oxygen amount and heat, it is complete to guarantee that it is decomposed.Calcium oxide powder after decomposition passes through under dore furnace 1
The smoke-box 6 of side, which is delivered in rotary kiln, carries out subsequent reactions.
In addition, material inlet and the first reducing gas entrance can also be symmetrical arranged about dore furnace, quantity can also root
It is arranged according to demand.
In order to reduce cost, the reducing gas conveyance conduit further includes and the first branch pipeline 3 and described second
The first main road pipeline that bypass line 4 is connected to, the high-temperature gas conveyance conduit further include connecting with the third bypass line 5
The second logical main road pipeline, the first main road pipeline and the second main road pipeline are by being arranged in root canal road center, edge
Axially extending partition is separated to form.Wherein, partition is high-temperature alloy material, is fixed by welding in pipeline center.
In order to guarantee that coal dust has sufficient distance to gasify, coal burner setting is separate in the first main road pipeline
One end of the dore furnace 1, and the excess air coefficient in the coal burner is less than 1, it might even be possible to less than 0.5, so that
It obtains coal dust to gasify in the case where lack of air, generates and contain CO and H2Reducibility gas.
Raw coal enters coal pulverizer from coal bunker, and raw coal is worn into coal dust by coal pulverizer, is sprayed onto coal by coal dust jet pipe by delivering coal wind
In powder burner.Coal dust carries out part combustion heat release amount in coal burner, and the coal gas and semicoke that part burning generates are mixed
The top that object a part is delivered to dore furnace 1 by two first branch pipelines 3 simultaneously is closed, while calcium carbonate to be decomposed is under
Expects pipe 2 enters in dore furnace 1, and heat exchange occurs after the two mixing, and calcium carbonate absorbs a part of heat here and carries out part
It decomposes, then falls to the bottom of dore furnace 1.The coal gas and semicoke mixture another part that part burning generates pass through second
Road pipeline 4 is delivered to the lower part of dore furnace 1, and the reaction of nitrogen oxides in furnace is reduced to nitrogen；High-temperature gas is defeated simultaneously
It send pipeline to provide oxygen amount and heat required for the calcium carbonate after-flame in dore furnace 1 by third bypass line 5, guarantees its decomposition
Completely.Calcium oxide powder after decomposition is delivered in rotary kiln by the smoke-box 6 of 1 lower section of dore furnace carries out subsequent reactions.
Pass through the above-mentioned description to cement decomposer provided in an embodiment of the present invention:
1, the first branch pipeline in reducing gas conveyance conduit is connected to the first reducing gas entrance on dore furnace top,
Second branch pipeline is connected to the second reducing gas entrance of dore furnace lower part, and such reducing gas not only can be in dore furnace
Lower part is reacted with the NOx in furnace, reduces the concentration of NOx in furnace, but also can be to be entered in furnace by the material inlet on top
Raw material decompose provide heat, make its release heat quickly absorbed by raw material, improve meal calcining rate while, guarantee inhale
The uniformity of heat prevents raw material from just starting hot-spot phenomenon caused by carrying out the endothermic reaction after droping to bottom of furnace body, really
The safety of furnace body is protected；
2, two the first reducing gas entrances are symmetrically distributed in the two sides of material inlet, can guarantee to the full extent in this way
The uniformity of raw material heat absorption, improves resolution ratio；
3, the outlet of the 4th bypass line of high-temperature gas conveyance conduit is to the top of gasification furnace, so that high-temperature gas
It is delivered in gasification furnace, preferably the coal dust in gasification furnace can be heated from top to bottom, and make the mixing after gasification
Object is delivered to corresponding position as early as possible, avoids the waste of heat；
4, the first main road pipeline of reducing gas conveyance conduit and the second main road pipeline of high-temperature gas conveyance conduit are by setting
Partition in root canal road center, axially extending is set to be separated to form；Connect in the first main road pipeline far from one end of dore furnace
It is connected to coal burner, and the excess air coefficient in coal burner is less than 1.No setting is required in this way gasification furnace, can be achieved with
The structure of the supply of reducing gas, whole device is simpler, and cost is relatively low.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It should not be considered as beyond the scope of the present invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can be executed with hardware, processor
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device, which is characterized in that described device includes:
Dore furnace, at least one material inlet is arranged in the dore furnace side wall upper part and at least one first reducing gas enters
Mouthful；
At least one second reducing gas entrance and at least one high-temperature gas entrance is arranged in the dore furnace lower sidewall；
Reducing gas conveyance conduit is connected to the first branch pipeline of the first reducing gas entrance including at least one, with
And at least one is connected to the second branch pipeline of the second reducing gas entrance；
High-temperature gas conveyance conduit is connected to the third bypass line of the high-temperature gas entrance including at least one.
2. the apparatus according to claim 1, which is characterized in that the dore furnace side wall upper part includes a material inlet,
And two horizontally disposed first reducing gas entrances, wherein two horizontally disposed first reducing gas entrances symmetrically divide
Cloth is in the material inlet two sides.
3. the apparatus according to claim 1, which is characterized in that the dore furnace includes that the main body on being arranged in exists with setting
Under cone, an including second reducing gas entrance, positioned at the cone on the side wall of bottom.
4. device according to any one of claims 1 to 3, which is characterized in that described device further include and it is described also Primordial Qi
The gasification furnace of body conveyance conduit connection.
5. device according to claim 4, which is characterized in that the high-temperature gas conveyance conduit further includes the 4th bypass duct
Road, described 4th bypass line one end are connected to the third bypass line, other end connection and the gasification furnace.
6. device according to claim 5, which is characterized in that the 4th bypass line outlet is located at the gasification furnace roof
Portion.
7. device according to any one of claims 1 to 6, which is characterized in that the reducing gas conveyance conduit further includes
The first main road pipeline being connected to the first branch pipeline with the second branch pipeline, the high-temperature gas conveyance conduit
It further include the second main road pipeline being connected to the third bypass line, the first main road pipeline and the second main road pipeline
It is separated to form by partition that root canal road center is arranged in, axially extending.
8. device according to claim 7, which is characterized in that the first main road pipeline far from the dore furnace one
End connection coal burner, and the excess air coefficient in the coal burner is less than 1.
9. device according to any one of claims 1 to 8, which is characterized in that the high-temperature gas conveyance conduit, including two
A horizontally disposed third bypass line for being connected to the high-temperature gas entrance, is symmetrically distributed in the dore furnace two sides.
10. device according to any one of claims 1 to 9, which is characterized in that described device further includes being located at the decomposition
Smoke-box below furnace is connected to the decomposition furnace bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699360.8A CN110360843A (en) | 2019-07-31 | 2019-07-31 | A kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device |
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| CN201910699360.8A CN110360843A (en) | 2019-07-31 | 2019-07-31 | A kind of cement decomposing furnace coal dust high-efficiency gasification low-NO_x combustion technology device |
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| CN107842849A (en) * | 2017-10-31 | 2018-03-27 | 中国科学院力学研究所 | A kind of low NO of cement decomposing furnace coal dust pre-vaporizedXCombustion system and method |
| CN109111136A (en) * | 2018-10-11 | 2019-01-01 | 北京汉能清源科技有限公司 | Cement kiln low-grade coal highly effective combustion system and method |
| CN109867462A (en) * | 2019-02-27 | 2019-06-11 | 彭思晓 | A kind of cement burning system and application method |
| CN210399972U (en) * | 2019-07-31 | 2020-04-24 | 中国科学院力学研究所 | High-efficient gasification low-nitrogen combustion technology device of cement dore furnace buggy |
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