Flue ash removal device for desulfurizing tower

Abstract

The utility model relates to a flue ash cleaning device for a desulfurizing tower, which is applied to the technical field of flue cleaning and solves the problem that normal smoke discharge of a flue is affected due to the fact that ash is often accumulated at a flue elbow part at the bottom of the desulfurizing tower. The flue ash removal device comprises a gas storage tank, a conveying main pipe communicated with the gas storage tank, a main control valve arranged on the conveying main pipe and a plurality of conveying branch pipes, the multiple conveying branch pipes are evenly distributed on the bent portion of the flue body, gas inlets of the multiple conveying branch pipes are all communicated with the conveying main pipe, and gas outlets of the multiple conveying branch pipes are communicated with the gas storage tank. Air outlets of the multiple conveying branch pipes extend into the flue body, and a blowing part is arranged at the air outlet end of each conveying branch pipe; the flue has the advantages of being simple in structure, convenient to machine and manufacture, capable of better cleaning dust accumulated in the flue body and good in cleaning effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flue dust cleaning device for desulfurizing tower applied in the flue cleaning technical field. BACKGROUND

[0002] The sintering desulfurization system running CFB-FGD sintering machine flue gas purification system is composed of absorbent preparation system, CFB absorption tower system, material recirculation system, process water system, desulfurization dust remover and instrument control system, etc., the flue gas needing to be treated enters the desulfurizing tower from the bottom, the high-temperature flue gas and the added absorbent are fully premixed with the circulating desulfurization ash, a preliminary desulfurization reaction is carried out, and the reaction of the absorbent and HCl, HF is mainly completed in this area. During the process operation, some fluctuations may occur in the adjustment and control of each link, therefore, in actual production, dust deposition often occurs at the flue elbow part at the bottom of the desulfurizing tower, which affects the normal flue gas discharge. Therefore, it is necessary to provide a dust cleaning device for cleaning the dust at the flue elbow part to solve the existing problems. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a flue dust cleaning device for desulfurizing tower, solving the problem of dust deposition at the flue elbow part at the bottom of the desulfurizing tower, which affects the normal flue gas discharge.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] The utility model provides a flue dust cleaning device for desulfurizing tower, the desulfurizing tower includes a flue body, the flue dust cleaning device includes a gas storage tank, a conveying main pipe communicated with the gas storage tank, a total control valve and a plurality of conveying branch pipes provided on the conveying main pipe, the plurality of conveying branch pipes are uniformly distributed at the bent part of the flue body, the gas inlets of the plurality of conveying branch pipes are all communicated with the conveying main pipe, the gas outlets of the plurality of conveying branch pipes all extend to the inside of the flue body, and the gas outlet end of each conveying branch pipe is provided with a blowing piece.

[0006] Further, the blowing piece includes a cover cap covering the gas outlet of the conveying branch pipe and a plurality of gas outlets provided on the cover cap.

[0007] Further, the cover cap is in semicircular shape.

[0008] Further, the flue dust cleaning device further includes a branch control valve and a control piece provided on the conveying branch pipe, the control piece includes a signal receiving module, a time relay and a signal output module, and the signal output end of the branch control valve is signal connected with the signal output module.

[0009] Further, the conveying main pipe is further provided with a pressure detector, and the signal output end of the pressure detector is signal connected with the signal receiving module.

[0010] Further, the conveying branch pipe is provided with a flexible pipeline, the conveying branch pipe is provided with the branch control valve at two ends of the flexible pipeline, and signal output ends of the two branch control valves are connected with the signal output module.

[0011] Compared with the prior art, the utility model has the following advantages due to the technical scheme:

[0012] The flue dust cleaning device for the desulfurizing tower is characterized in that the desulfurizing tower comprises a flue body, the flue dust cleaning device comprises a gas storage tank, a conveying main pipe communicated with the gas storage tank, a total control valve arranged on the conveying main pipe and a plurality of conveying branch pipes, the plurality of conveying branch pipes are evenly distributed at bending parts of the flue body, air inlets of the plurality of conveying branch pipes are communicated with the conveying main pipe, air outlets of the plurality of conveying branch pipes are extended into the flue body, and a blowing piece is arranged at an air outlet end of each conveying branch pipe.

[0013] Further, the utility model also comprises a branch control valve arranged on the conveying branch pipe and a control piece, the control piece comprises a signal receiving module, a time relay and a signal output module, a signal output end of the branch control valve is connected with the signal output module, and the control piece can control the plurality of conveying branch pipes to be opened in sequence at a fixed time for blowing, so that the flue body is prevented from being filled with dust without stopping production and stopping machine, the sintering production operation rate is improved, the desulfurizing system is ensured to be stably operated, and the risk of cleaning dust in a limited space is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Some specific embodiments of the utility model will be described in detail below with reference to the accompanying drawings in an exemplary but non-restrictive manner. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the drawings:

[0015] Figure 1 is a schematic view of the overall structure in the preferred embodiment of the utility model;

[0016] Figure 2 is an enlarged view of A in the preferred embodiment of the utility model; Figure 1

[0017] Figure 3 is a schematic view of the control structure in the preferred embodiment of the utility model.

[0018] In the drawings, the reference signs are explained as follows:

[0019] ​1, flue body; 2, gas storage tank; 3, conveying main pipe; 4, total control valve; 5, conveying branch pipe; 6, blowing part; 61, cover; 62, gas outlet; 7, branch control valve; 8, control part; 81, signal receiving module; 82, time relay; 83, signal output module; 9, flexible pipe; 10, pressure detector. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0023] Reference Figure 1 , Figure 2 and Figure 3 , the flue dust cleaning device for desulfurizing tower provided by the present application, the desulfurizing tower comprises a flue body 1, the flue dust cleaning device comprises a gas storage tank 2, a conveying main pipe 3 in communication with the gas storage tank 2, a total control valve 4 and a plurality of conveying branch pipes 5 arranged on the conveying main pipe 3, the gas storage tank 2 stores inert gas nitrogen, the plurality of conveying branch pipes 5 are evenly distributed at the bending part of the flue body 1, the gas inlets of the plurality of conveying branch pipes 5 are in communication with the conveying main pipe 3, the gas outlets of the plurality of conveying branch pipes 5 extend into the inside of the flue body 1, and the gas outlet end of each conveying branch pipe 5 is provided with a blowing part 6. When the flue body 1 bending part is cleaned, the total control valve 4 is opened, the inert gas in the gas storage tank 2 is blown into the flue body 1 through the conveying main pipe 3 and the conveying branch pipe 5, so that the dust accumulated on the inner wall of the flue body 1 is blown up and suspended, and the suspended dust is discharged from the flue body 1 with the flue gas, thereby completing the cleaning of the flue body 1.

[0024] Reference Figure 1 ,Figure 2 and Figure 3 The blowing member 6 comprises a cover 61 covering the outlet of the conveying branch pipe 5 and a plurality of gas outlet holes 62 arranged on the cover 61. The blowing member 6 can prevent dust from falling into the conveying branch pipe 5, avoid blockage, and increase the blowing force of nitrogen, so that the dust is better blown and suspended in the flue body 1, thereby improving the cleaning effect. The cover 61 is arranged in a semicircular shape, which can avoid the blockage caused by the accumulation of thick dust on the outer edge of the cover 61.

[0025] Reference Figure 1 , Figure 2 and Figure 3 The control member 8 comprises a signal receiving module 81, a time relay 82 and a signal output module 83, and the signal output end of the branch control valve 7 is signal connected with the signal output module 83. The branch control valve 7 of the conveying branch pipe 5 can be controlled by the control member 8 to be opened in turn at a fixed time to blow the flue body 1, so that the dust in the flue can be prevented from accumulating without stopping production and stopping machine, thereby improving the sintering production operation rate and ensuring the stable operation of the desulfurization system. The pressure detector 10 is arranged on the conveying main pipe 3, and the signal output end of the pressure detector 10 is signal connected with the signal receiving module 81. When the conveying branch pipe 5 blows the flue body 1 in turn at a fixed time, the pressure detector 10 detects the pressure data in the conveying main pipe 3 and transmits the data to the control member 8 for analysis and comparison. If the detected pressure is not within the safe setting range, the branch control valve 7 of the conveying branch pipe 5 controlled to be opened by the control member 8 is closed, so that the workers can perform timely maintenance;

[0026] Reference Figure 1 , Figure 2 and Figure 3 The flexible pipe 9 is arranged on the conveying branch pipe 5, which can be a PVC pipe. The branch control valve 7 is arranged on the conveying branch pipe 5 at both ends of the flexible pipe 9, and the signal output ends of the two branch control valves 7 are connected with the signal output module 83. When conveying nitrogen, the flexible pipe 9 can play a role in buffering the suction force, so that the nitrogen is stably conveyed into the flue body 1, thereby improving the stability during dust removal. When the flexible pipe 9 is damaged, the two branch control valves 7 can be used to close the conveying branch pipe 5, so as to ensure the sealing of the flue body 1 and facilitate the disassembly and replacement of the flexible pipe.

[0027] In summary, the ash cleaning device has simple structure, is convenient to manufacture, and can better clean the dust accumulated in the flue body 1. The multiple conveying branch pipes 5 can be controlled to be opened in sequence by the control member 8 to clean the flue body 1 without stopping production and stopping machine, so that the ash accumulation in the flue body 1 is avoided, the sintering production operation rate is improved, the stable operation of the desulfurization system is ensured, and the risk of cleaning the ash in the limited space is avoided.

[0028] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A flue dusting device for a desulfurizing tower including a flue body (1), characterized by, The flue dust removal device comprises a gas storage tank (2), a delivery main pipe (3) communicated with the gas storage tank (2), a total control valve (4) arranged on the delivery main pipe (3), and a plurality of delivery branch pipes (5). The plurality of delivery branch pipes (5) are evenly distributed at the bending part of the flue body (1). The gas inlets of the plurality of delivery branch pipes (5) are communicated with the delivery main pipe (3), and the gas outlets of the plurality of delivery branch pipes (5) extend into the flue body (1). The gas outlet end of each delivery branch pipe (5) is provided with a blowing piece (6).

2. The flue dust removing device for desulfurizing tower according to claim 1, characterized by The blowing piece (6) comprises a cover (61) covering the gas outlet of the delivery branch pipe (5) and a plurality of gas outlets (62) arranged on the cover (61).

3. The flue dust removing device for desulfurizing tower according to claim 2, characterized by The cover (61) is arranged in a semicircular shape.

4. The flue dust removing device for desulfurizing tower according to any one of claims 1 to 3, characterized by The device further comprises a branch control valve (7) arranged on the delivery branch pipe (5) and a control piece (8). The control piece (8) comprises a signal receiving module (81), a time relay (82), and a signal output module (83). The signal output end of the branch control valve (7) is signal connected with the signal output module (83).

5. The flue dust removing device for desulfurizing tower according to claim 4, characterized in that, The delivery main pipe (3) is further provided with a pressure detector (10). The signal output end of the pressure detector (10) is signal connected with the signal receiving module (81).

6. The flue dust removing device for desulfurizing tower according to claim 5, characterized in that, The delivery branch pipe (5) is provided with a flexible pipe (9). The delivery branch pipe (5) is provided with the branch control valve (7) at both ends of the flexible pipe (9). The signal output ends of the two branch control valves (7) are connected with the signal output module (83).

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