CN106000704A - Boiler clinker removal agent adding device and working method thereof - Google Patents
Boiler clinker removal agent adding device and working method thereof Download PDFInfo
- Publication number
- CN106000704A CN106000704A CN201610490147.2A CN201610490147A CN106000704A CN 106000704 A CN106000704 A CN 106000704A CN 201610490147 A CN201610490147 A CN 201610490147A CN 106000704 A CN106000704 A CN 106000704A
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- China
- Prior art keywords
- boiler
- coke
- throwing device
- agent
- spray gun
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
- B05B15/25—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
- B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
- B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to a boiler clinker removal agent adding device and a working method thereof. The boiler clinker removal agent adding device comprises a pressure storage tank, an air compressor, a stirrer, a distributor and a controller, wherein an outlet of the air compressor communicates with the pressure storage tank; a stirring paddle of the stirrer is arranged in the pressure storage tank; the distributor comprises an inlet and a plurality of outlets; a discharge opening of the pressure storage tank is connected with the inlet of the distributor; one of the outlets of the distributor is connected with a flow regulating valve, a flowmeter and a spray gun in sequence; an outlet of the spray gun is arranged in a boiler furnace; and the flow regulating valve, the flowmeter and the air compressor are connected with the controller respectively. The boiler clinker removal agent adding device provided by the invention can spray a boiler clinker removal agent into the boiler furnace accurately and uniformly and has a good spraying effect.
Description
Technical field
The present invention relates to a kind of boiler decoking agent throwing device and method of work thereof, belong to the technical field of coal-burning boiler equipment.
Background technology
China is a coal-fired superpower, and Coal-fired capacity accounts for the nearly half in the world, and wherein most is used as thermal power plant's combustion power generation, long
Phase operation causes boiler coke problem generally to exist.Boiler coke can reduce boiler efficiency, and the equipment that affects runs well, and causes resource
Waste, serious coking results even in stove chamber fire-extinguishing accident, and high risks boiler safety operates.
Prior art tackles boiler coke problem by coke-removing agent, coke-removing agent is directly doped in coal dust with the form of powder body or profit
Mix with fire coal in being injected directly into burner hearth with powder body adding equipment, or as a solution atomized spray to inside burner hearth.Powder body is thrown
The mode added, required automatization adding equipment complex and expensive, cost is high；Liquid automatic feeding automation degree of equipment is low, needs people
Industry control lance ejection flow, do not only exist cannot accurately control dosage, drawback that operational hazards coefficient is high, and liquid adds and sets
The standby slurry type coke-removing agent that sprays can result in blockage, it is impossible to normally works.It addition, coke-removing agent throwing device of the prior art is big
Use one to two to see burners to add more, be difficulty with coke-removing agent and contact with reaching furnace wall each position being full and uniform；And cannot basis
Boiler actual coking situation, the most quickly regulation coke-removing agent emitted dose, causes coke-removing agent to waste, and cost increases；
Chinese patent CN204730171U discloses a kind of coal-burning boiler coke-removing agent intelligence multiple spot chemical spraying device, and it includes digital control
Cabinet-type air conditioner, grug feeding jar and be arranged on the multiple spot nozzle at boiler top；Grug feeding jar includes that tank body, tank body are arranged over dosing mouth side and are provided with
Water inlet, tank interior is provided with motor and agitator, and tank body lower part is provided with outlet and connects mixing pump, mixing pump by electromagnetic valve
Connect through pipeline again and be arranged on the multiple spot nozzle at boiler top, digital control cabinet-type air conditioner be electrically connected motor and agitator, electromagnetic valve,
Mixing pump and multiple spot nozzle control it.The medicine of this device ejection has focused largely on boiler center rather than main mesh
On cursor position furnace wall, not only cause the wasting of resources and dragged down production work efficiency.
Therefore, developing the coal-burning boiler additive automatization injection of a kind of highly effective, to add technology the most necessary.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of boiler decoking agent throwing device.
The present invention also provides for the method for work of a kind of above-mentioned boiler decoking agent throwing device.
The technical scheme is that
A kind of boiler decoking agent throwing device, including pressure vessel, air compressor, agitator, allotter and controller；Air
The outlet of compressor connects with pressure vessel；The stirring paddle of agitator is arranged in pressure vessel；Allotter includes that an entrance is with many
Individual outlet；The discharging opening of pressure vessel is connected with the entrance of allotter, and the outlet of allotter is connected with flow control valve, flow in turn
Meter and spray gun；The outlet of spray gun is arranged in burner hearth；Flow control valve, effusion meter and air compressor are connected with controller respectively.
Preferably, the outlet of air compressor is also connected with the entrance of allotter.The air stream of allotter it is passed through by controller regulation
Measure size thus quickly regulate coke-removing agent emitted dose.
Preferably, flow control valve, effusion meter and air compressor are connected on same controller.The advantage herein designed is,
Realizing being uniformly controlled air compressor and all flow control valves, effusion meter by controller, synchronicity is higher, improves
Precise control and control efficiency.
Preferably, shown agitator is magnetic stirrer；Allotter is liquid distributor.
Preferably, pressure vessel top is provided with loading hopper and Pressure gauge, is provided with discharge valve bottom pressure vessel.
Preferably, the rotating shaft of agitator is tightly connected with pressure vessel by chicksan.
Preferably, agitator includes multi-disc stirring paddle.Multi-disc stirring paddle guarantees the homogeneity of solution/serosity in pressure vessel.
Preferably, what spray gun was arranged on boiler corner sees jet-burner；The injection direction of spray gun and the angle of boiler wall are α, 30 °
≤α≤60°.Spray gun is formed as quadrangle tangential circle injection in boiler, utilizes the rotary wind that boiler self burner formed can be by
Coke-removing agent takes each position of burner hearth uniformly to, it is to avoid single point injection adds that to cause coke-removing agent to assemble utilization rate in subregion low
Problem.The injection direction of spray gun can regulate in real time according to the burner hearth of different coking situations simultaneously, is effectively increased decoking efficiency.
Preferably, the ejection end of described spray gun is provided with shower nozzle, and shower nozzle is silicon carbide reaction-sintered material.Silicon carbide reaction-sintered has
Excellent high temperature resistant, wear-resisting, anti-oxidation characteristics, the slag that do not falls, do not ftracture, service life long, jeting effect is good.
The method of work of a kind of above-mentioned boiler decoking agent throwing device, comprises the following steps that
1) coke-removing agent is added pressure vessel, start electromagnetic valve, flow control valve, agitator and air compressor by controller；
2) air compressor produces compressed air, and coke-removing agent is delivered to allotter by compressed air, and coke-removing agent is uniformly divided by allotter
It is fitted on each export distributor, lance ejection enters inside burner hearth；
3) coke-removing agent is evenly supplied to each position of burner hearth and devokes by the rotary wind that the burner of boiler is formed.
Preferably, described coke-removing agent is slurry type coke-removing agent, and slurry type coke-removing agent is sial base coke-removing agent serosity, magnesio coke-removing agent slurry
Liquid or modified kaolin serosity.
Preferably, the method for work of described boiler decoking agent throwing device also includes the folder of injection direction and the boiler wall adjusting spray gun
Angle is the step of α.Concrete structure according to boiler and the size of the concrete condition regulation α of pot slagging, can improve coke-removing agent
Spray efficiency.
Preferably, the method for work of described boiler decoking agent throwing device also includes the step regulating flow, and effusion meter will input spray gun
The flow value of coke-removing agent feed back to controller, the flow value that effusion meter is fed back by controller and the target flow value of storage in controller
Comparing, controller is by the flow of the coke-removing agent of Flow-rate adjustment valve regulation input spray gun.
If it is further preferred that the flow value of effusion meter feedback is more than target flow value, then reducing the flow of flow control valve, as
Really the flow value of effusion meter feedback is less than target flow value, then improve the flow of flow control valve.
The invention have the benefit that
Boiler decoking agent throwing device the most of the present invention, by coke-removing agent even application to burner hearth, accurately, uniformly, spraying is imitated in spraying
The best；
Boiler decoking agent throwing device the most of the present invention, realizes the automatic feeding of coke-removing agent by controller, simple to operate, simultaneously
Avoid the danger of execute-in-place；
Boiler decoking agent throwing device the most of the present invention, can regulate injection flow according to the uninterrupted of effusion meter feedback, essence in time
Really control coke-removing agent consumption, decrease waste and improve coke-removing agent service efficiency, reduce decoking cost；
Boiler decoking agent throwing device the most of the present invention, equipped with multiple stirring paddles on agitator, is possible to prevent serosity sedimentation in tank,
Keep the homogeneity of serosity, it is to avoid spray gun blocks.
Accompanying drawing explanation
Fig. 1 is the structural representation of boiler decoking agent throwing device of the present invention；
Fig. 2 is the top view that spray gun of the present invention is distributed in burner hearth；
Wherein 1, pressure vessel；2, agitator；3, allotter；4, discharge valve；5, spray gun；6, loading hopper；7, pressure
Table；8, chicksan；9, air compressor；10, flow control valve；11, effusion meter；12, controller.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the present invention will be further described, but is not limited to this.
Embodiment 1
As shown in Figure 1.
A kind of boiler decoking agent throwing device, including pressure vessel 1, air compressor 9, agitator 2, allotter 3 and control
Device 12；The outlet of air compressor 9 connects with pressure vessel 1；The stirring paddle of agitator 2 is arranged in pressure vessel 1；Point
Orchestration 3 includes an entrance and four outlets；The discharging opening of pressure vessel 1 is connected with the entrance of allotter 3, going out of allotter 3
Mouth is connected with flow control valve 10, effusion meter 11 and spray gun 5 in turn；The outlet of spray gun 5 is arranged in burner hearth；Flow control valve
10, effusion meter 11 and air compressor 9 are connected with controller 12 respectively.
Embodiment 2
As described in Example 1 boiler decoking agent throwing device, its difference is, the outlet of air compressor 9 also with allotter 3
Entrance connect.It is passed through the air mass flow size of allotter 3 by controller 12 regulation thus quickly regulates coke-removing agent emitted dose.
Embodiment 3
Boiler decoking agent throwing device as described in Example 1, its difference is, flow control valve 10, effusion meter 11 and air
Compressor 9 is connected on same controller 12.The advantage herein designed is, realizes compressing air by a controller 12
Machine 9 and all flow control valves 10, being uniformly controlled of effusion meter 11, synchronicity is higher, improves precise control and control efficiency.
Embodiment 4
Boiler decoking agent throwing device as described in Example 1, its difference is, shown agitator 2 is magnetic stirrer；Distribution
Device 3 is liquid distributor.
Embodiment 5
Boiler decoking agent throwing device as described in Example 1, its difference is, pressure vessel 1 top is provided with loading hopper 6
With Pressure gauge 7, bottom pressure vessel 1, it is provided with discharge valve 4.
Embodiment 6
Boiler decoking agent throwing device as described in Example 1, its difference is, chicksan is passed through in the rotating shaft of agitator 2
It is tightly connected with pressure vessel 1.
Embodiment 7
Boiler decoking agent throwing device as described in Example 1, its difference is, agitator 2 includes two panels stirring paddle.Two panels is stirred
Mix oar and guarantee the homogeneity of solution/serosity in pressure vessel 1.
Embodiment 8
As described in Example 1 boiler decoking agent throwing device, its difference is, what spray gun 5 was arranged on boiler corner sees jet-burner；
The injection direction of spray gun 5 and the angle of boiler wall are α, α=30 °.Spray gun 5 is formed as quadrangle tangential circle injection in boiler,
Coke-removing agent can take to each position of burner hearth by rotary wind uniformly that utilize boiler self burner to be formed, it is to avoid single point injection
Add and cause coke-removing agent to assemble the problem that utilization rate is low in subregion.The injection direction of spray gun can be according to different coking situations simultaneously
Burner hearth regulates in real time, is effectively increased decoking efficiency.
Embodiment 9
Boiler decoking agent throwing device as described in Example 1, its difference is, the ejection end of described spray gun 5 is provided with shower nozzle, spray
Head is silicon carbide reaction-sintered material；α=60 °.Silicon carbide reaction-sintered has high temperature resistant, wear-resisting, the anti-oxidation characteristics of excellence,
Do not fall slag, do not ftracture, service life long, jeting effect is good.
Embodiment 10
Described in a kind of embodiment 1-9, the method for work of boiler decoking agent throwing device, comprises the following steps that
1) coke-removing agent is added pressure vessel by loading hopper 6, by controller 12 start electromagnetic valve, flow control valve 10,
Agitator 2 and air compressor 9；
2) air compressor 9 produces compressed air, and coke-removing agent is delivered to allotter 3 by compressed air, and allotter 3 is by coke-removing agent
It is evenly distributed to each export distributor, spray gun 5 spurts into inside burner hearth；
3) coke-removing agent is evenly supplied to each position of burner hearth and devokes by the rotary wind that the burner of boiler is formed.
Embodiment 11
The method of work of boiler decoking agent throwing device as described in Example 10, its difference is, described coke-removing agent is that sial base removes
Burnt agent serosity.
Embodiment 12
The method of work of boiler decoking agent throwing device as described in Example 10, its difference is, described boiler decoking agent adds dress
The method of work put also includes the step that angle is α of injection direction and the boiler wall adjusting spray gun 5.Concrete knot according to boiler
The size of the concrete condition regulation α of structure and pot slagging, can improve the spray efficiency of coke-removing agent.
Embodiment 13
The method of work of boiler decoking agent throwing device as described in Example 10, its difference is, described boiler decoking agent adds dress
The method of work put also includes the step regulating flow, and the flow value of the coke-removing agent of input spray gun 5 is fed back to control by effusion meter 11
Device 12, the flow value that effusion meter 11 is fed back by controller 12 is compared with the target flow value of storage in controller 12, is controlled
Device 12 is by the flow of the coke-removing agent of flow control valve 10 regulation input spray gun 5.If the flow value of effusion meter 11 feedback is more than
Target flow value, then reduce the flow of flow control valve 10, if the flow value of effusion meter 11 feedback is less than target flow value, then
Improve the flow of flow control valve 10.
A 75t/h coal-powder boiler carries out lasting coke-removing agent and adds experiment, add three coke-removing agents every day and add 1h every time,
Until coal-powder boiler shutdown maintenance.Taking pictures through entering burner hearth internal check, and contrasted before decoking, result shows, uses this dress
Putting the decoking efficiency of the burner hearth after decoking high, decoking rate is up to 90%, and decoking is without dead angle.
Claims (10)
1. a boiler decoking agent throwing device, it is characterised in that include pressure vessel, air compressor, agitator, distribution
Device and controller；The outlet of air compressor connects with pressure vessel；The stirring paddle of agitator is arranged in pressure vessel；Distribution
Device includes an entrance and multiple outlet；The discharging opening of pressure vessel is connected with the entrance of allotter, and the outlet of allotter connects successively
It is connected to flow control valve, effusion meter and spray gun；The outlet of spray gun is arranged in burner hearth；Flow control valve, effusion meter and air pressure
Contracting machine is connected with controller respectively.
Boiler decoking agent throwing device the most according to claim 1, it is characterised in that the outlet of air compressor also with point
The entrance of orchestration connects.
Boiler decoking agent throwing device the most according to claim 1, it is characterised in that flow control valve, effusion meter and sky
Air compressor is connected on same controller.
Boiler decoking agent throwing device the most according to claim 1, it is characterised in that agitator includes multi-disc stirring paddle.
Boiler decoking agent throwing device the most according to claim 1, it is characterised in that spray gun is arranged on seeing of boiler corner
Jet-burner；The injection direction of spray gun and the angle of boiler wall are α, 30 °≤α≤60 °.
Boiler decoking agent throwing device the most according to claim 1, it is characterised in that the ejection end of described spray gun is provided with spray
Head, shower nozzle is silicon carbide reaction-sintered material.
7. the method for work of boiler decoking agent throwing device described in a claim 1-6 any one, it is characterised in that include
Step is as follows:
1) coke-removing agent is added pressure vessel, start electromagnetic valve, flow control valve, agitator and air compressor by controller；
2) air compressor produces compressed air, and coke-removing agent is delivered to allotter by compressed air, and coke-removing agent is uniformly divided by allotter
It is fitted on each export distributor, lance ejection enters inside burner hearth；
3) coke-removing agent is evenly supplied to each position of burner hearth and devokes by the rotary wind that the burner of boiler is formed.
The method of work of boiler decoking agent throwing device the most according to claim 7, it is characterised in that described coke-removing agent is slurry
Liquid type coke-removing agent, slurry type coke-removing agent is sial base coke-removing agent serosity, magnesio coke-removing agent serosity or modified kaolin serosity.
The method of work of boiler decoking agent throwing device the most according to claim 7, it is characterised in that described boiler decoking agent
The method of work of throwing device also includes the step of the injection direction adjusting spray gun and the angle α of boiler wall.
The method of work of boiler decoking agent throwing device the most according to claim 7, it is characterised in that described boiler clinker removal
The method of work of agent throwing device also includes the step regulating flow, and the flow value of the coke-removing agent of input spray gun is fed back to by effusion meter
Controller, in the flow value that effusion meter is fed back by controller and controller, the target flow value of storage is compared, and controller passes through
The flow of the coke-removing agent of Flow-rate adjustment valve regulation input spray gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610490147.2A CN106000704A (en) | 2016-06-28 | 2016-06-28 | Boiler clinker removal agent adding device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610490147.2A CN106000704A (en) | 2016-06-28 | 2016-06-28 | Boiler clinker removal agent adding device and working method thereof |
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| Publication Number | Publication Date |
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| CN106000704A true CN106000704A (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610490147.2A Pending CN106000704A (en) | 2016-06-28 | 2016-06-28 | Boiler clinker removal agent adding device and working method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942009A (en) * | 2017-12-30 | 2018-04-20 | 扬州大学 | A kind of device and evaluation method of quantitative assessment decoking efficiency |
| CN109028114A (en) * | 2018-07-20 | 2018-12-18 | 华电电力科学研究院有限公司 | It is a kind of for cooperate with administer collecting ash and coking device and its working method |
| CN109306280A (en) * | 2017-07-26 | 2019-02-05 | 宜兴市正生石化有限公司 | A kind of application anti-scorch, decoking ash cleaning agent is in boiler combustion |
| CN109959026A (en) * | 2019-03-05 | 2019-07-02 | 华电电力科学研究院有限公司 | It is a kind of for preventing the fire inspection cooling air system and its working method of coal-burning boiler coking |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306280A (en) * | 2017-07-26 | 2019-02-05 | 宜兴市正生石化有限公司 | A kind of application anti-scorch, decoking ash cleaning agent is in boiler combustion |
| CN107942009A (en) * | 2017-12-30 | 2018-04-20 | 扬州大学 | A kind of device and evaluation method of quantitative assessment decoking efficiency |
| CN107942009B (en) * | 2017-12-30 | 2020-07-14 | 扬州大学 | Device and method for quantitatively evaluating decoking efficiency |
| CN109028114A (en) * | 2018-07-20 | 2018-12-18 | 华电电力科学研究院有限公司 | It is a kind of for cooperate with administer collecting ash and coking device and its working method |
| CN109028114B (en) * | 2018-07-20 | 2023-06-27 | 华电电力科学研究院有限公司 | Device for cooperatively treating boiler dust accumulation and coking and working method thereof |
| CN109959026A (en) * | 2019-03-05 | 2019-07-02 | 华电电力科学研究院有限公司 | It is a kind of for preventing the fire inspection cooling air system and its working method of coal-burning boiler coking |
| CN109959026B (en) * | 2019-03-05 | 2023-11-28 | 华电电力科学研究院有限公司 | Fire detection cooling air system for preventing coking of coal-fired boiler and working method thereof |
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Application publication date: 20161012 |