In-furnace desulfurization relay conveying system
By using fluidization devices and positive pressure pneumatic power delivery in the furnace desulfurization relay conveying system, the problems of insufficient power and re-spraying of limestone powder conveying system in the furnace are solved, which improves the conveying efficiency and reduces the risk of dust and overpressure .
Patent Information
- Application Number
- CN202421183950.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing limestone powder conveying system in the furnace is insufficient during long-distance transportation, resulting in rebreathing and affecting efficiency.
A desulfurization relay conveying system in the furnace was designed, and the limestone powder relay bin was equipped with a fluidization device through the limestone powder storage bin and the limestone powder relay bin in front of the furnace, which was transported by positive compressed air pressure pneumatic force, combined with a spiral quantitative feeding scale and jet pump to ensure that Stable delivery to avoid insufficient power and re-injection.
The entire limestone conveying system is achieved to sufficient power, avoid back spraying, improve conveying efficiency, and reduce dust and overpressure risks through dust collectors and pressure relief valves.
Smart Images
Figure CN222330963U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of desulfurization systems, in particular to a furnace desulfurization relay transportation system. Background Art
[0002] At present, the emission standards for pollutants generated by circulating fluidized bed boilers are becoming increasingly stringent, and in-furnace desulfurization technology has been widely used. One of the difficulties in the design of in-furnace limestone powder transportation is long-distance transportation, high fan energy consumption, and the transportation process is affected by the rear-end resistance, resulting in insufficient power, resulting in back-spraying. Summary of the invention
[0003] In order to solve the problems of insufficient existing conveying power and back-spraying, the utility model provides an in-furnace desulfurization relay conveying system, which can ensure conveying power, improve conveying efficiency, and avoid back-spraying problems.
[0004] The technical solution is as follows: an in-furnace desulfurization relay transportation system, which includes a limestone powder main storage bin, characterized in that it also includes a limestone powder relay bin in front of the furnace, the limestone powder main storage bin and the limestone powder relay bin in front of the furnace are both equipped with fluidizing devices, the outlet of the limestone powder main storage bin is connected to a bin pump, the bin pump is connected to the feed port of the limestone powder relay bin in front of the furnace through a conveying thick-walled pipe, the conveying thick-walled pipe and the bin pump are both connected to a front compressed air storage tank, the outlet of the limestone powder relay bin in front of the furnace is connected to a spiral quantitative feeding scale, the spiral quantitative feeding scale is connected to a furnace front feeding distributor through an air-locking feeder and a jet pump, the furnace front feeding distributor is connected to the furnace, and the jet pump is connected to a rear compressed air storage tank.
[0005] It is further characterized in that the fluidizing device includes a Roots blower, an electric heater, and a gasification plate;
[0006] The limestone powder main storage bin is provided with two outlets, each of which is connected to a bin pump via a gate valve and an expansion joint;
[0007] The front end of the thick-walled conveying pipe is connected to a plugging extraction device;
[0008] The limestone powder main storage bin and the limestone powder relay bin in front of the furnace are both equipped with dust collectors and pressure relief valves;
[0009] The outlets of the limestone powder relay bin in front of the furnace are provided with two outlets, each of which is connected to one of the spiral quantitative feeding scales through a gate valve;
[0010] A metal expansion joint is arranged between the furnace front feed distributor and the furnace.
[0011] After adopting the utility model, the whole limestone conveying system is divided into two parts: plant main pipe conveying and furnace front conveying, which completely avoids insufficient power and complex system in the whole conveying process, does not cause back spraying, and improves the conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is the principle diagram of the utility model system. DETAILED DESCRIPTION
[0013] See Figure 1 As shown, a furnace desulfurization relay conveying system includes a limestone powder main storage bin 1 and a furnace-front limestone powder relay bin 3. Both the limestone powder main storage bin 1 and the furnace-front limestone powder relay bin 3 are equipped with fluidizing devices, which include a Roots blower 6, an electric heater 7, and a gasification plate 8, which can prevent the limestone powder from bridging and agglomerating in the bin. Two outlets of the limestone powder main storage bin 1 are provided, and are respectively connected to a bin pump 5 through a manual gate valve 2, an expansion joint 3, and a pneumatic gate valve 4. The bin pump 5 is connected to the feed port of the furnace-front limestone powder relay bin 3 through a conveying thick-walled pipe 20. The conveying thick-walled pipe 20 and the bin pump 5 are both connected to the front compressed air storage tank 15, and the compressed air dense phase positive pressure is adopted. The limestone powder is delivered to the limestone powder relay bin 9 in front of the furnace by pneumatic conveying through a thick-walled conveying pipe 20. Two outlets of the limestone powder relay bin 3 in front of the furnace are provided and are respectively connected to a spiral quantitative feeding scale 10 through a manual gate valve 2 and a pneumatic gate valve 4. The spiral quantitative feeding scale 10 is connected to the furnace feed distributor 13 through an air-locking feeder 11 and a jet pump 12. The furnace feed distributor 13 is connected to the furnace. The jet pump 12 is connected to the rear compressed air storage tank 21. Compressed air is used as the air source to convert the limestone powder into a high-speed airflow, which is continuously conveyed to the furnace feed distributor 13 and enters the furnace through the drop port; and a metal expansion joint 14 is provided between the furnace feed distributor 13 and the furnace.
[0014] Compressed air storage tanks are used during the transportation process to stabilize the transportation air pressure, separate water and oil, and improve the quality of compressed air.
[0015] The front end of the thick-walled conveying pipe 20 is connected to a plugging device 19 to prevent pipe blockage.
[0016] The limestone powder main storage bin 1 and the limestone powder relay bin 3 in front of the furnace are both equipped with dust collectors 16, pressure relief valves 17, and material level meters 18 to eliminate dust in the bin, prevent overpressure in the bin, and understand the limestone powder storage amount in the bin in real time.
Claims
1. A furnace desulfurization relay conveying system, comprising a limestone powder main storage bin, characterized in that: It also includes a limestone powder relay bin in front of the furnace, and the limestone powder main storage bin and the limestone powder relay bin in front of the furnace are both equipped with fluidizing devices, the outlet of the limestone powder main storage bin is connected to the bin pump, and the bin pump is connected to the feed port of the limestone powder relay bin in front of the furnace through a conveying thick-walled pipe, and the conveying thick-walled pipe and the bin pump are both connected to a front compressed air storage tank, and the outlet of the limestone powder relay bin in front of the furnace is connected to a spiral quantitative feeding scale, and the spiral quantitative feeding scale is connected to a furnace feeding distributor through an air-locking feeder and a jet pump, and the furnace feeding distributor is connected to the furnace, and the jet pump is connected to a rear compressed air storage tank.
2. The in-furnace desulfurization relay transportation system according to claim 1 is characterized in that: The fluidizing device comprises a Roots blower, an electric heater and a gasification plate.
3. The in-furnace desulfurization relay transportation system according to claim 1 is characterized in that: The limestone powder main storage bin is provided with two outlets, each of which is connected to a bin pump via a gate valve and an expansion joint.
4. The in-furnace desulfurization relay transportation system according to claim 1 is characterized in that: The front end of the thick-walled conveying pipe is connected to a plugging extraction device.
5. The in-furnace desulfurization relay transportation system according to claim 1 is characterized in that: The limestone powder main storage bin and the limestone powder relay bin in front of the furnace are both equipped with dust collectors and pressure relief valves.
6. The in-furnace desulfurization relay transportation system according to claim 1, characterized in that: The outlets of the limestone powder relay bin in front of the furnace are provided with two outlets, and each outlet is connected to one of the spiral quantitative feeding scales through a plug valve.
7. The in-furnace desulfurization relay transportation system according to claim 1, characterized in that: A metal expansion joint is arranged between the furnace front feed distributor and the furnace.