Desulfurization powder feeding system and desulfurization system

Abstract

The utility model provides a desulfurization powder feeding system and a desulfurization system. The desulfurization powder feeding system comprises a new material bin, a waste material bin and a feeding part. And the new material bin is used for storing new desulfurization powder. The waste material bin comprises a first waste material bin and a second waste material bin, the first waste material bin is used for storing desulfurization powder primary waste materials, the second waste material bin is used for storing desulfurization powder secondary waste materials, and the feeding end of the first waste material bin and the feeding end of the second waste material bin are both used for communicating with the output end of desulfurization reaction equipment. The discharging end of the new material bin and the discharging end of the first waste material bin are both communicated with a feeding part, and the feeding part is used for conveying the new desulfurization powder material or a mixture of the new desulfurization powder material and the primary desulfurization powder waste material to the input end of desulfurization reaction equipment. During desulfurization, primary waste generated after desulfurization of the new desulfurization powder enters the first waste bin, and second waste generated after desulfurization of a mixture of the new desulfurization powder and the primary waste enters the second waste bin, so that utilization of the primary waste is realized, and the utilization rate of the desulfurization powder is increased.

Description

Technical Field

[0001] This application relates to the technical field of flue gas desulfurization, and particularly to a desulfurization powder feeding system and a desulfurization system. Background Art

[0002] In traditional sanitary ceramic factories, tunnel kilns are usually used to fire products. The flue gas generated during the firing process of tunnel kilns needs to be desulfurized up to the standard before being discharged into the atmosphere. Generally, dry powder calcium-based desulfurization powder is used for flue gas desulfurization.

[0003] If the calcium-based desulfurization powder is used for the second time after being used once, the desulfurization effect on flue gas will decrease significantly, resulting in non-compliance of flue gas desulfurization. Therefore, in the existing desulfurization technology, the calcium-based desulfurization powder is generally discarded directly after being used once.

[0004] It can be seen that the existing desulfurization technology has a low utilization rate of desulfurization powder, resulting in high desulfurization costs. Summary of the Utility Model

[0005] This application provides a desulfurization powder feeding system and a desulfurization system to solve the technical problem of low utilization rate of desulfurization powder in the existing technology.

[0006] To solve the above problems, this application provides a desulfurization powder feeding system, and the desulfurization powder feeding system includes:

[0007] A new material bin for storing new desulfurization powder.

[0008] A waste material bin, including a first waste material bin and a second waste material bin. The first waste material bin is used for storing primary desulfurization powder waste, and the second waste material bin is used for storing secondary desulfurization powder waste. The feeding ends of the first waste material bin and the second waste material bin are both used to communicate with the output end of the desulfurization reaction device.

[0009] A feeding part. The discharging end of the new material bin and the discharging end of the first waste material bin are both communicated with the feeding part. The feeding part is used to convey the new desulfurization powder in the new material bin to the input end of the desulfurization reaction device or to convey the new desulfurization powder in the new material bin and the primary desulfurization powder waste in the first waste material bin to the input end of the desulfurization reaction device.

[0010] In some embodiments, the feeding part includes:

[0011] A feeding pipe having opposite first and second connection ends. The first connection end is used to connect to the input end of the desulfurization reaction device, and the discharging ends of the new material bin and the first waste material bin are both communicated with the feeding pipe.

[0012] A feeding fan connected to the second connection end.

[0013] In some embodiments, the feeding section further includes:

[0014] A mixer, connected to the feeding pipe and located between the first connection end and the second connection end, for mixing the desulfurized powder fresh material in the fresh material bin and the desulfurized powder primary waste in the first waste material bin.

[0015] In some embodiments, vibration motors are provided on the outer walls of the fresh material bin, the first waste material bin, and the second waste material bin.

[0016] In some embodiments, rotary feeders are connected to the discharge ends of the fresh material bin and the first waste material bin.

[0017] In some embodiments, the discharge ends of the fresh material bin and the first waste material bin are connected to the rotary feeders through flexible connectors.

[0018] In some embodiments, the rotary feeder is connected to a frequency conversion controller.

[0019] In some embodiments, a powder conveying device is connected to the output end of the second waste material bin.

[0020] This application also provides a desulfurization system, which includes:

[0021] Any one of the desulfurized powder feeding systems described above;

[0022] A desulfurization reaction device, including a desulfurization reactor and a desulfurization dust collector. The desulfurization dust collector is connected to the smoke outlet of the desulfurization reactor. The output end of the desulfurization reaction device is formed at the desulfurization dust collector, and the input end of the desulfurization reaction device is formed at the desulfurization reactor.

[0023] The beneficial effects of the embodiments of this application are as follows: The desulfurized powder feeding system provided by this application includes a fresh material bin, a waste material bin, and a feeding section. The fresh material bin is used to store the desulfurized powder fresh material. The waste material bin includes a first waste material bin and a second waste material bin. The first waste material bin is used to store the desulfurized powder primary waste, and the second waste material bin is used to store the desulfurized powder secondary waste. The feeding ends of the first waste material bin and the second waste material bin are both used to communicate with the output end of the desulfurization reaction device. The discharge ends of the fresh material bin and the first waste material bin are both communicated with the feeding section. The feeding section can convey the desulfurized powder fresh material in the fresh material bin or the mixture of the desulfurized powder fresh material in the fresh material bin and the desulfurized powder primary waste in the first waste material bin to the input end of the desulfurization reaction device. When the desulfurized powder feeding system is used for desulfurizing the flue gas, the primary waste generated after the desulfurized powder fresh material is desulfurized can enter the first waste material bin, and the secondary waste generated after the mixture of the desulfurized powder fresh material and the primary waste is desulfurized can enter the second waste material bin, thereby realizing the utilization of the primary waste, improving the utilization rate of the desulfurized powder, and reducing the desulfurization cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0025] Figure 1 is a schematic structural diagram of a desulfurization powder feeding system provided by an embodiment of the present application;

[0026] Figure 2 is a schematic structural diagram of a desulfurization system provided by an embodiment of the present application;

[0027] Figure 3 is a schematic flow diagram of the desulfurization powder feeding system during operation provided by an embodiment of the present application;

[0028] In the figure: 100, desulfurization powder feeding system; 10, new material bin; 20, waste bin; 21, first waste bin; 22, second waste bin; 30, feeding part; 31, feeding pipe; 32, feeding fan; 40, mixer; 51, return valve; 52, discharge valve; 53, rotary feeder; 54, vibration motor; 55, powder conveying equipment; 56, flexible connector; 200, desulfurization reaction equipment; 201, desulfurization reactor; 202, desulfurization dust collector; 203, gate valve; 204, rotary air lock valve; 205, return pipe; 206, return fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the convenience of description, only the parts related to the present application rather than all the structures are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0031] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0033] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0034] Please refer toFigure 1 and Figure 2 Figure 2 , the present application provides a desulfurization powder feeding system 100, which can be used in the desulfurization system of ceramic flue gas, but is not limited thereto. It can be understood that a desulfurization reaction device 200 is provided in the desulfurization system, and the flue gas generated in ceramic production is desulfurized with desulfurization powder in the desulfurization reaction device 200.

[0035] The desulfurization powder feeding system 100 provided by the present application includes a new material bin 10, a waste material bin 20, and a feeding section 30. Among them, the new material bin 10 is used to store new desulfurization powder. The waste material bin 20 includes a first waste material bin 21 and a second waste material bin 22. The first waste material bin 21 is used to store primary desulfurization powder waste, and the second waste material bin 22 is used to store secondary desulfurization powder waste. The feeding ends of the first waste material bin 21 and the second waste material bin 22 are both used to communicate with the output end of the desulfurization reaction device 200. The discharge end of the new material bin 10 and the discharge end of the first waste material bin 21 are both communicated with the feeding section 30. The feeding section 30 is used to convey the new desulfurization powder in the new material bin 10 to the input end of the desulfurization reaction device 200 or to convey the new desulfurization powder in the new material bin 10 and the primary desulfurization powder waste in the first waste material bin 21 to the input end of the desulfurization reaction device 200.

[0036] By making the waste material bin 20 include the first waste material bin 21 and the second waste material bin 22, and the discharge end of the new material bin 10 and the discharge end of the first waste material bin 21 are both communicated with the feeding section 30, in the desulfurization system 100 provided by the present application, when starting desulfurization, the feeding section 30 can first convey the new desulfurization powder in the new material bin 10 to the desulfurization reaction device 200 to desulfurize the flue gas, and store the primary desulfurization powder waste generated after desulfurizing the new desulfurization powder in the first waste material bin 21. In this way, when the first waste material bin 21 stores a certain amount of primary desulfurization powder waste, for example, when the first waste material bin 21 is full of primary desulfurization powder waste, the feeding section 30 can be made to convey the new desulfurization powder and the primary desulfurization powder waste to the desulfurization reaction device 200 together, so that the mixture of the new desulfurization powder and the primary desulfurization powder waste desulfurizes the flue gas, thereby realizing the utilization of the primary desulfurization powder waste, improving the utilization rate of the desulfurization powder, and reducing the desulfurization cost.

[0037] The new material bin 10 in the desulfurization powder feeding system 100 is used to store new desulfurization powder. Among them, the new desulfurization powder refers to the desulfurization powder that has not been used for desulfurization. In the embodiments of the present application, the specific structure of the new material bin 10 is not limited. The new material bin 10 has a discharge end, and the discharge end is communicated with the feeding section 30, so that the feeding section 30 can convey the new desulfurization powder in the new material bin 10 to the desulfurization reaction device 200. It should be noted that, in order to realize the opening and closing control of the discharge end of the new material bin 10, it can be understood that a discharge valve 52 is provided at the discharge end of the new material bin 10.

[0038] The waste bin 20 in the desulfurization powder feeding system 100 is used to store the desulfurization powder waste generated after the desulfurization of the desulfurization powder. The first waste bin 21 in the waste bin 20 is used to store the primary desulfurization powder waste, and the second waste bin 22 is used to store the secondary desulfurization powder waste. Among them, the primary desulfurization powder waste refers to the waste generated after the primary desulfurization of the new desulfurization powder, and the secondary desulfurization powder waste refers to the waste generated after the primary desulfurization of the mixture of the new desulfurization powder and the primary desulfurization powder waste. Both the first waste bin 21 and the second waste bin 22 have a feed end and a discharge end. The feed ends of the first waste bin 21 and the second waste bin 22 are both connected to the output end of the desulfurization reaction device 200, so that the desulfurization powder waste can enter the first waste bin 21 or the second waste bin 22. It should be noted that, for the convenience of selectively controlling the entry of the desulfurization powder waste into the first waste bin 21 or the second waste bin 22, return valves 51 can be provided at the feed ends of the first waste bin 21 and the second waste bin 22. To enable the desulfurization powder feeding system 100 to realize the feeding of the mixture of the new desulfurization powder and the primary desulfurization powder waste, the discharge end of the first waste bin 21 is also connected to the feeding part 30. It can be understood that a discharge valve 52 is also provided at the discharge end of the first waste bin 21.

[0039] The feeding part 30 in the desulfurization powder feeding system 100 is used to transport the new desulfurization powder or the mixture of the new desulfurization powder and the primary desulfurization powder waste to the desulfurization reaction device 200. For example, the feeding part 30 can be a conveying channel with a screw conveying structure or a conveying channel with a conveyor belt structure, but it is not limited thereto.

[0040] Such as Figure 1As shown, in some embodiments, the feeding unit 30 includes a feeding pipe 31 and a feeding fan 32. Among them, the feeding pipe 31 has opposite first and second connection ends. The first connection end is used to connect to the input end of the desulfurization reaction device 200. The feeding fan 32 is connected to the second connection end of the feeding pipe 31 and can transport the desulfurization material in the feeding pipe 31 to the input end of the desulfurization reaction device 200. The discharge ends of the new material bin 10 and the first waste bin 21 are both communicated with the feeding pipe 31. Thus, when the discharge valve 52 at the discharge end of the new material bin 10 is opened and the discharge valve 52 at the discharge end of the first waste bin 21 is closed, the new desulfurization powder enters the feeding pipe 31; when the discharge valves 52 at the discharge ends of both the new material bin 10 and the first waste bin 21 are opened, both the new desulfurization powder and the primary waste desulfurization powder enter the feeding pipe 31. By making the discharge ends of the new material bin 10 and the first waste bin 21 communicate with the same feeding pipe 31, during the process of the feeding fan 32 transporting the new desulfurization powder and the primary waste desulfurization powder in the feeding pipe 31 to the desulfurization reaction device 200, the new desulfurization powder and the primary waste desulfurization powder can be mixed during the transportation in the feeding pipe 31. It should be noted that to ensure the uniformity of the mixing of the new desulfurization powder and the primary waste desulfurization powder in the feeding pipe 31, the connection positions of the discharge end of the new material bin 10 and the feeding pipe 31 and the connection positions of the discharge end of the first waste bin 21 and the feeding pipe 31 are both located at one end of the feeding pipe 31 close to the feeding fan 32.

[0041] Of course, in some embodiments, to further ensure the uniformity of the mixing of the new desulfurization powder and the primary waste desulfurization powder, the feeding unit 30 may further include a mixer 40. The mixer 40 is connected to the feeding pipe 31 and is located between the first connection end and the second connection end. The mixer 40 is used to mix the new desulfurization powder and the primary waste desulfurization powder. It can be understood that while the mixer 40 satisfies being located between the first connection end and the second connection end, it also satisfies that the mixer 40 is on the path of transporting the new desulfurization powder and the primary waste desulfurization powder to the first connection end after they both enter the feeding pipe 31. The specific structure of the mixer 40 in the embodiments of the present application is not limited. For example, the mixer 40 can be a static mixer 40, but it is not limited to this.

[0042] Such as Figure 1As shown, in some embodiments, rotary feeders 53 are connected to the discharge ends of the new material bin 10 and the first waste bin 21. The rotary feeder 53 is used to convey the materials output from the new material bin 10 and the first waste bin 21 to the feed pipe 31. It can be understood that for the rotary feeder 53 connected to the new material bin 10, one end is connected to the discharge end of the new material bin 10, and the other end is connected to the feed pipe 31; for the rotary feed pipe 31 connected to the first waste bin 21, one end is connected to the discharge end of the first waste bin 21, and the other end is connected to the feed pipe 31. The specific structure of the rotary feeder 53 in this application is not limited. For example, the rotary feeder 53 generally includes a casing and a rotor rotatably arranged inside the casing. The rotor has several blades in the circumferential direction. The material falls into the space between adjacent blades from above the rotary feeder 53, and then the rotor drives the blades to rotate. The material rotates with the blades to the lower part of the rotary feeder 53 and is thus discharged. It should be noted that in some embodiments, the rotary feeder 53 is connected to a frequency conversion controller, and the rotation speed of the rotor in the rotary feeder 53 can be adjusted by frequency conversion, so that the ratio of the new desulfurization powder and the primary desulfurization waste powder entering the feed pipe 31 can be adjusted according to the desulfurization parameters.

[0043] As Figure 1 As shown, in some embodiments, vibration motors 54 are provided on the outer walls of the new material bin 10, the first waste bin 21, and the second waste bin 22. By providing the vibration motors 54, the smooth feeding of the materials in the bins can be ensured. The vibration motors 54 can be arranged at the positions of the bins close to the discharge ends. For example, the new material bin 10, the first waste bin 21, and the second waste bin 22 are generally arranged in a funnel shape at the positions close to the discharge ends, and the vibration motors 54 can be arranged at the funnel-shaped positions, but this is not limited thereto.

[0044] As Figure 1 As shown, in some embodiments, the discharge ends of the new material bin 10 and the first waste bin 21 are both connected to the rotary feeder 53 through flexible connectors 56. In this way, the vibration of the bins can be prevented from affecting the rotary feeder 53 and the feeding part 30. For example, when vibration motors 54 are provided on both the new material bin 10 and the first waste bin 21, the vibration at the bins can be prevented from being transmitted to other devices, ensuring the operation stability of the desulfurization powder feeding system 100. The specific structure of the flexible connector 56 in the embodiments of this application is not limited. For example, the flexible connector 56 can include a section of rubber hose, and connection flanges are provided at both ends of the rubber hose.

[0045] It should be noted that the primary waste desulfurization powder stored in the first waste bin 21 in the desulfurization powder feeding system 100 will enter the feeding pipe 31 from the discharging end of the first waste bin 21 and be reused after being mixed with the new desulfurization powder, while the secondary waste desulfurization powder stored in the second waste bin 22 will be directly treated as waste. In some embodiments, a powder conveying device is connected to the output end of the second waste bin 22. The powder conveying device is used to output the secondary waste in the second waste bin 22. By providing a powder conveying device at the output end of the second waste bin 22, it is convenient to discharge and collect the secondary waste. In some embodiments, a discharge valve 52 can also be provided at the output end of the second waste bin 22. By providing a discharge valve 52 at the output end of the second waste bin 22, when the second waste bin 22 stores the secondary waste desulfurization powder, the discharge valve 52 can be closed first. After the second waste bin 22 is full, the discharge valve 52 is opened and the powder conveying device is started at the same time to discharge the secondary waste desulfurization powder. In the embodiments of the present application, the specific structure of the powder conveying device is not limited. For example, the powder conveying device can be a screw conveyor or a belt conveyor, but is not limited thereto.

[0046] In some other embodiments, the present application also provides a desulfurization system, which includes the desulfurization powder feeding system 100 and the desulfurization reaction device 200 in any of the above embodiments. The feeding system is used to feed desulfurization powder into the desulfurization reaction device 200 to desulfurize the flue gas entering the desulfurization reaction device 200. The desulfurization reaction device 200 may include a desulfurization reactor 201 and a desulfurization dust collector 202. The desulfurization dust collector 202 is connected to the smoke outlet of the desulfurization reactor 201. The output end of the desulfurization reaction device 200 is formed at the desulfurization dust collector 202, and the input end of the desulfurization reaction device 200 is formed at the desulfurization reactor 201.

[0047] A dust discharge port is provided at the bottom of the desulfurization dust collector 202. A flap valve 203 is provided at the dust discharge port, and a star-shaped dust discharge valve 204 is provided below the flap valve 203. The desulfurization system further includes a material return part, which includes a material return pipe 205 and a material return fan 206. The star-shaped dust discharge valve 204 is communicated with the material return pipe 205. One end of the material return pipe 205 is connected to the material return fan 206, and the other end has two branch pipes, which are respectively connected to the feeding ends of the first waste bin 21 and the second waste bin 22. It should be noted that, in some embodiments, the star-shaped dust discharge valve 204 connected to the desulfurization dust collector 202 and the rotary feeder 53 connected to the new material bin 10 and the first waste bin 21 can both be airtight dust discharge structures, so as to effectively prevent the air pressure of the feeding fan 32 and the material return fan 206 from being too large and blowing the dust-containing gas into the feed bin and the dust collector. In some embodiments, for the desulfurization dust collector 202 in the desulfurization reaction device 200, the fan can not be turned on and only its filter cartridge can be used to filter the dust, and the pulse back blowing function can be used to blow the dust to the bottom regularly.

[0048] In the desulfurization system provided by this application, all the technical solutions of all embodiments of the above-mentioned desulfurization powder feeding system 100 are adopted. Therefore, it has at least all the beneficial effects brought by the technical solutions of the embodiments of the above-mentioned desulfurization powder feeding system 100, which will not be elaborated one by one here.

[0049] Please refer to Figure 3 , the desulfurization powder feeding system or desulfurization system provided by the above embodiments of this application can complete the desulfurization powder feeding through the following steps during the desulfurization powder feeding:

[0050] Step S100, start the first feeding mode, so that the new material bin 10 supplies materials to the input end of the desulfurization reaction device 200 alone, and all the waste materials output from the output end of the desulfurization reaction device 200 enter the first waste material bin 21; in the first feeding mode, the feeding end of the first waste material bin 21 is opened, the feeding end of the second waste material bin 22 is closed, and the discharging end of the first waste material bin 21 is closed, and the discharging end of the new material bin 10 is opened.

[0051] In the first feeding mode, the feeding end of the first waste material bin 21 is opened and the feeding end of the second waste material bin 22 is closed, which can be realized by controlling the return valve 51 at the feeding ends of the first waste material bin 21 and the second waste material bin 22; the discharging end of the first waste material bin 21 is closed and the discharging end of the new material bin 10 is opened, which can be realized by controlling the discharging valves 52 and the rotary feeder 53 at the discharging ends of the first waste material bin 21 and the new material bin 10. For example, in some embodiments, in the first feeding mode, among the return valve 51, discharging valve 52, vibration motor 54 and rotary feeder 53 of the first waste material bin 21, only the return valve 51 is opened and the others are closed; the return valve 51, discharging valve 52, vibration motor 54 and powder conveying equipment 55 of the second waste material bin 22 are all closed; the discharging valve 52, vibration motor 54 and rotary feeder 53 of the new material bin 10 are all opened; the slide valve 203, star-shaped ash discharge valve 204, return air blower 206 and feeding air blower 32 of the desulfurization dust collector 202 are always open.

[0052] Step S200, when the first waste material bin 21 is filled to the specified amount, start the second feeding mode, so that the new material bin 10 and the first waste material bin 21 jointly supply materials to the input end of the desulfurization reaction device 200, and all the waste materials output from the output end of the desulfurization reaction device 200 enter the second waste material bin 22. In the second feeding mode, the feeding end of the first waste material bin 21 is closed, the feeding end of the second waste material bin 22 is opened, and the discharging ends of the first waste material bin 21 and the new material bin 10 are both opened.

[0053] After the first waste bin 21 is stacked to the specified amount, the second feeding mode is started. Herein, the first waste bin 21 being stacked to the specified amount means that the primary waste of desulfurization powder in the first waste bin 21 is stacked to the specified amount. This application does not limit the specific specified amount. For example, the specified amount can be that the primary waste of desulfurization powder fills the first waste bin 21. Whether the primary waste of desulfurization powder in the first waste bin 21 is stacked to the specified amount can be determined by setting an infrared ranging sensor, but it is not limited thereto.

[0054] For example, in some embodiments, in the second feeding mode, among the return valve 51, discharge valve 52, vibration motor 54, and rotary feeder 53 of the first waste bin 21, only the return valve 51 is closed and the others are open; among the return valve 51, discharge valve 52, vibration motor 54, and powder conveying equipment 55 of the second waste bin 22, the return valve 51 is open; the discharge valve 52, vibration motor 54, and rotary feeder 53 of the new material bin 10 are all open; the slide valve 203, star-shaped ash discharge valve 204, return air blower 206, and feeding blower 32 of the desulfurization dust collector 202 are always open.

[0055] Since all the feeding in the first feeding mode is from the new material bin 10, and in the second feeding mode, the new material bin 10 and the first waste bin 21 jointly feed, it can be understood that the rotation frequency of the blades in the rotary feeder 53 connected to the new material bin 10 is different in the first feeding mode and the second feeding mode. And when the new material bin 10 and the first waste bin 21 jointly feed, the discharge valve 52, vibration motor 54, and powder conveying equipment 55 of the second waste bin 22 can be in an open state, or can be in a closed state first and then opened after the second waste bin 22 is filled.

[0056] In the embodiments of this application, taking the example that in the second feeding mode, among the return valve 51, discharge valve 52, vibration motor 54, and powder conveying equipment 55 of the second waste bin 22, the return valve 51 is open and the others are closed for illustration. In some embodiments, after starting the second feeding mode and before the first waste bin 21 is emptied, the desulfurization powder feeding process further includes:

[0057] Step S300, when the second waste bin 22 is filled, start the third feeding mode to enable the new material bin 10 and the first waste bin 21 to continue jointly feeding the input end of the desulfurization reaction device 200, the waste output from the output end of the desulfurization reaction device 200 all continues to enter the second waste bin 22, and open the output end of the second waste bin 22. In the third feeding mode, the feeding end of the first waste bin 21 is closed, the discharging ends of the first waste bin 21 and the new material bin 10 are both open, and the feeding end and the discharging end of the second waste bin 22 are both open.

[0058] Whether the second waste bin 22 is filled can also be determined by setting an infrared ranging sensor, but it is not limited thereto.

[0059] For example, in some embodiments, in the third feeding mode, among the return valve 51, the discharge valve 52, the vibration motor 54, and the rotary feeder 53 of the first waste bin 21, only the return valve 51 is closed, and the others are all open; the discharge valve 52, the vibration motor 54, and the rotary feeder 53 of the new material bin 10 are all open; the return valve 51, the discharge valve 52, the vibration motor 54, and the powder conveying device 55 of the second waste bin 22 can all be open. The third feeding mode can be to open the discharge valve 52, the vibration motor 54, and the powder conveying device 55 of the second waste bin 22 when the second feeding mode is started.

[0060] Taking the case where the volumes of the first waste bin 21 and the second waste bin 22 are the same, and the new material bin 10 and the first waste bin 21 supply materials in a 50% ratio as an example, after the second waste bin 22 is emptied, switch to the second feeding mode. After the second waste bin 22 is full, switch to the third feeding mode. Until the first waste bin 21 is emptied, then switch to the first feeding mode, and so on in a cycle, effectively reducing the use of new desulfurization powder, improving the utilization rate of desulfurization powder, reducing the desulfurization cost, and bringing great economic benefits.

[0061] The above description is only the implementation mode of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A desulfurization powder feeding system, characterized in that: The desulfurization powder feeding system comprises: New material silo, used to store new desulfurization powder; A waste bin, comprising a first waste bin and a second waste bin, wherein the first waste bin is used to store primary waste of desulfurization powder, and the second waste bin is used to store secondary waste of desulfurization powder, and the feed end of the first waste bin and the feed end of the second waste bin are both used to connect to the output end of the desulfurization reaction equipment; The feeding part, the discharge end of the new material bin and the discharge end of the first waste bin are both connected to the feeding part, and the feeding part is used to transport the new desulfurization powder material in the new material bin to the input end of the desulfurization reaction equipment or to transport the new desulfurization powder material in the new material bin and the primary desulfurization powder waste in the first waste bin to the input end of the desulfurization reaction equipment.

2. The desulfurization powder feeding system according to claim 1, characterized in that: The feeding part comprises: A feed pipe having a first connecting end and a second connecting end opposite to each other, wherein the first connecting end is used to connect to the input end of the desulfurization reaction device, and the discharge end of the new material bin and the discharge end of the first waste material bin are both connected to the feed pipe; A feeding fan is connected to the second connecting end.

3. The desulfurization powder feeding system according to claim 2, characterized in that: The feeding part also includes: A mixer is connected to the feed pipe and is located between the first connection end and the second connection end, and is used for mixing the new desulfurization powder in the new material bin and the primary desulfurization powder in the first waste bin.

4. The desulfurization powder feeding system according to claim 1, characterized in that: The outer wall of the new material bin, the outer wall of the first waste material bin and the outer wall of the second waste material bin are all provided with vibration motors.

5. The desulfurization powder feeding system according to claim 1, characterized in that: The discharging end of the new material bin and the discharging end of the first waste material bin are both connected with a rotary feeder.

6. The desulfurization powder feeding system according to claim 5, characterized in that: The discharge end of the new material bin and the discharge end of the first waste material bin are both connected to the rotary feeder via a flexible connector.

7. The desulfurization powder feeding system according to claim 6, characterized in that: The rotary feeder is connected with a frequency conversion controller.

8. The desulfurization powder feeding system according to any one of claims 1 to 7, characterized in that: The output end of the second waste bin is connected to a powder conveying device.

9. A desulfurization system, characterized in that: The desulfurization system comprises: The desulfurization powder feeding system according to any one of claims 1 to 8; The desulfurization reaction equipment comprises a desulfurization reactor and a desulfurization dust collector, wherein the desulfurization dust collector is connected to the smoke exhaust port of the desulfurization reactor, the output end of the desulfurization reaction equipment is formed at the desulfurization dust collector, and the input end of the desulfurization reaction equipment is formed at the desulfurization reactor.

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