Blowing device for denitration dust removal equipment

Abstract

The utility model relates to the technical field of denitration and dust removal equipment, and discloses a blowing device for denitration and dust removal equipment, which comprises a dust remover branch pipeline, the dust remover branch pipeline is used for communicating a denitration tower and a dust remover main pipeline, the dust remover branch pipeline is internally provided with a blowing assembly, and the blowing assembly is communicated with the denitration tower. And the blowing assembly is used for blowing and cleaning loose accumulated dust in the branch pipeline of the dust remover. The blowing assembly is arranged in the dust remover branch pipeline, compressed air is generated through the air compressor and conveyed into the blowing pipeline through the connecting pipe, loose accumulated dust in the dust remover branch pipeline is blown away through the multiple nozzle assemblies arranged on the blowing pipeline, and smoke flowing in the dust remover branch pipeline is brought into the dust remover; and dust in the flue gas is prevented from being deposited at the bottom of the dust remover branch pipeline to influence the operation effect of the dust removal system.

Description

Technical Field

[0001] The present application relates to the technical field of de-pinning and dust removal equipment, and specifically to a blowing device for de-pinning and dust removal equipment. Background Art

[0002] According to the continuous updating of environmental protection equipment, the ceramic filter tube integrated denitrification and dust removal flue gas treatment equipment is currently more advanced in the domestic market. In view of its simple process, small footprint, simple operation, easy maintenance, long service life of ceramic filter tubes, low system energy consumption and low operating costs, most newly built glass companies are installing and using it.

[0003] In the glass production process, the flue gas treatment process is as follows: the flue gas (420℃~480℃) from the glass kiln is heat exchanged by a heat exchanger or a waste heat boiler to reduce the flue gas temperature before treatment to about 350~380℃. An ammonia spraying system is set before the entrance of the desulfurization tower, and ammonia is sprayed evenly through the ammonia spraying grid; desulfurizer (slaked lime) is sprayed at the Venturi of the desulfurization tower, and sulfur dioxide is removed through the reaction tower; the fully mixed ammonia enters the dust removal equipment for NOx and smoke treatment, and then the clean flue gas is cooled by the low temperature section of the boiler and introduced into the chimney by the induced draft fan and then discharged. However, with the operation of the system, the dust collector inlet flue is seriously ash-accumulated, causing the system resistance to increase significantly.

[0004] The main flue at the dust collector inlet branches into an average of 8 branch flues. With the diversion of the flue gas flow in the main flue, coupled with a large amount of desulfurizer entrained in the flue gas, the flue gas flow and velocity will inevitably be reduced. The desulfurizer entrained in the flue gas cannot be fully brought into the dust removal equipment. Most of the circulating ash is accumulated and settled inside the branch flue at the dust collector inlet, resulting in serious ash accumulation in the 8 inlet flues. The inlet butterfly valve cannot be opened and closed, and online maintenance cannot be achieved; and the increase in system resistance will lead to unstable airflow, resulting in a large number of ceramic filter tubes breaking and increased pressure in the kiln, which greatly increases the potential safety risks of environmental data and operating costs. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present application provides a blowing device for a de-dusting dust removal device.

[0007] (II) Technical solution

[0008] To solve the above-mentioned problems, the present application provides the following technical solutions: a blowing device for a de-powdering dust removal equipment, comprising: a dust collector branch pipe, the dust collector branch pipe is used to connect the de-powdering tower and the dust collector main pipe, a blowing assembly is arranged inside the dust collector branch pipe, the blowing assembly is used to blow and clean the loose accumulated dust inside the dust collector branch pipe; the blowing assembly includes a blowing pipe, at least one end of the blowing pipe is connected to an air compressor through a connecting pipe, the air compressor is used to provide compressed air to the inside of the blowing pipe, a plurality of groups of nozzle assemblies are arranged on the blowing pipe, the compressed air inside the blowing pipe is sprayed out through the nozzle assembly to blow away the loose accumulated dust inside the dust collector branch pipe, and the flue gas flowing inside the dust collector branch pipe is brought into the dust collector; the blowing pipe is placed inside the dust collector branch pipe through a supporting assembly.

[0009] Preferably, the nozzle assembly is connected to the interior of the spray pipe through an elbow and a short pipe.

[0010] Preferably, the connecting pipe is divided into two sections, the inner section of the connecting pipe is connected to the injection pipe, and the outer section of the connecting pipe is connected to the air compressor. The inner and outer sections of the connecting pipe are connected through connecting joints arranged on the inner and outer walls of the dust collector branch pipe.

[0011] Preferably, a manhole door is provided below the branch duct of the dust collector, and the manhole door is used to place the spray assembly into the branch duct of the dust collector.

[0012] Preferably, the support assembly includes a support sleeve, which is installed at an angle below the spray pipe, and the lower end of the support sleeve is threadedly connected to a support leg, and the upper end of the support leg is provided with a thread for rotating the support leg into the support sleeve to adjust the height of the spray assembly.

[0013] Preferably, the nozzle assembly includes a connector, one end of which is connected to the elbow, and the other end of which is connected to a connecting nut, a ball head is arranged inside the connecting nut, and the ball head is connected to the nozzle.

[0014] Preferably, an air jet hole is arranged at the front side of the nozzle, and the air jet hole is arranged in a trumpet shape.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present application provides a blowing device for a de-pinning dust removal device, which has the following beneficial effects:

[0017] 1. The blowing device for the out-of-stock dust removal equipment is provided with a blowing assembly inside the branch pipe of the dust collector, and compressed air is generated by an air compressor, which is transported to the inside of the blowing pipe through a connecting pipe. The loose accumulated dust inside the branch pipe of the dust collector is blown away by a plurality of nozzle assemblies provided in the blowing pipe, and the flue gas flowing inside the branch pipe of the dust collector is brought into the dust collector, so as to prevent a large amount of dust in the flue gas from being deposited at the bottom of the branch pipe of the dust collector, which affects the operation effect of the dust removal system.

[0018] 2. The blowing device for the out-of-stock dust removal equipment can be adjusted according to different angle requirements by setting an adjustable nozzle assembly. At the same time, a trumpet-shaped jet hole is set on the front side of the nozzle assembly to increase the air flow pressure and improve the blowing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a blowing device for a de-pinning dust removal device in the present application;

[0020] Figure 2 This is a schematic diagram of the structure of the nozzle assembly of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the support component of this application.

[0022] In the figure: 1. Dust collector branch pipe; 2. Spray pipe; 3. Support sleeve; 31. Support leg; 32. Thread; 4. Short pipe; 5. Elbow; 6. Nozzle assembly; 61. Connector; 62. Connecting nut; 63. Ball head; 64. Nozzle; 65. Jet hole; 7. Manhole door; 8. Connecting pipe; 9. Three-piece pneumatic ball valve; 10. Air compressor; 11. Controller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] See also Figure 1-Figure 3The present application provides a new technical solution: a spraying device for denitration dust removal equipment, comprising a dust collector branch pipe 1, the dust collector branch pipe 1 is used to connect the denitration tower and the dust collector main pipe, the dust-containing flue gas from the denitration tower flows through the dust collector branch pipe 1 to the inside of the dust collector for dust removal, in order to prevent the dust from accumulating inside the dust collector branch pipe 1 and affecting the use effect and life of the dust removal system, a spraying assembly is arranged inside the dust collector branch pipe 1, and the spraying assembly is used to spray and clean the loose dust accumulation inside the dust collector branch pipe 1; The spray assembly includes a spray pipe 2, at least one end of which is connected to an air compressor 10 through a connecting pipe 8. The air compressor 10 is used to provide compressed air to the inside of the spray pipe 2. A plurality of groups of nozzle assemblies 6 are provided on the spray pipe 2. The compressed air inside the spray pipe 2 is sprayed out through the nozzle assembly 6 to disperse the loose dust accumulation inside the dust collector branch pipe 1, and the flue gas flowing inside the dust collector branch pipe 1 is brought into the dust collector; the spray pipe 2 is placed inside the dust collector branch pipe 1 through a supporting assembly.

[0025] In a specific implementation, during the operation of the glass kiln furnace, the dust-containing flue gas coming out of the denitrification tower flows through the dust collector branch pipe 1. At the same time, compressed air (the compressed air pressure is about 0.6Mpa) is generated by the air compressor 10, and transported to the inside of the blowing pipe 2 through the connecting pipe 8. The loose dust accumulation inside the dust collector branch pipe 1 is blown away by a plurality of nozzle assemblies 6 arranged in the blowing pipe 2, and the flue gas flowing inside the dust collector branch pipe 1 is brought into the dust collector, so as to avoid a large amount of dust in the flue gas being deposited at the bottom of the dust collector branch pipe 1, affecting the operation effect of the dust removal system.

[0026] In some embodiments, the nozzle assembly 6 is connected to the interior of the spray pipe 2 through an elbow 5 and a short pipe 4. Multiple nozzle assemblies 6 are staggered and distributed up and down on the spray pipe 2, so that the spray surface of the nozzle assembly 6 can be utilized more efficiently. The upper and lower nozzle assemblies 6 of the spray pipe 2 are respectively raised 30 degrees and lowered 30 degrees to ensure the upper and lower widths of the effective surface of the air flow.

[0027] In a specific implementation, the spray pipe 2, the support sleeve 3, the short pipe 4, the elbow 5, the nozzle assembly 6 and the support assembly are all made of Q345 material, which does not affect normal use in a high temperature environment.

[0028] In some embodiments, the connecting pipe 8 is divided into two sections, the inner section of the connecting pipe 8 is connected to the injection pipe 2, and the outer section of the connecting pipe 8 is connected to the air compressor 10. The inner and outer sections of the connecting pipe 8 are connected through connecting joints arranged on the inner and outer walls of the dust collector branch pipe 1, ensuring that the dust collector branch pipes 1 of the device are stably connected.

[0029] In some embodiments, a manhole door 7 is opened below the dust collector branch pipe 1, and the manhole door 7 is used to place the spray assembly into the dust collector branch pipe 1, and it is also convenient for maintenance of the dust collector branch pipe 1.

[0030] In some embodiments, a three-piece pneumatic ball valve 9 is provided on the outer section of the connecting pipe 8, and the three-piece pneumatic ball valve 9 is controlled by a controller 11. During use, the three-piece pneumatic ball valve 9 can be controlled by the controller 11 to allow the air compressor 10 to intermittently spray the inside of the spray pipe 2, thereby ensuring the cleaning effect and saving resources.

[0031] In some embodiments, the support assembly includes a support sleeve 3, which is installed at an angle below the spray pipe 2. The lower end of the support sleeve 3 is threadedly connected to a support leg 31, and the upper end of the support leg 31 is provided with a thread 32, which is used to rotate the support leg 31 into the support sleeve 3 to adjust the height of the spray assembly; the number of support sleeves 3 is four groups, and the four groups of support sleeves 3 are distributed at the front and rear ends of the spray pipe 2, and two adjacent groups of support sleeves 3 are symmetrically arranged, which can support the spray pipe 2 and also adjust the height of the spray pipe 2 so that the spray pipe 2 is located on the central axis of the dust collector branch pipe 1.

[0032] In some embodiments, the nozzle assembly 6 includes a connector 61, one end of the connector 61 is connected to the elbow 5, and the other end of the connector 61 is connected to a connecting nut 62. A ball head 63 is arranged inside the connecting nut 62, and the ball head 63 includes at least two degrees of freedom, upper and lower. The ball head 63 is connected to a nozzle 64; by arranging the connector 61 and the connecting nut 62, the nozzle assembly 6 can be easily disassembled on the elbow 5, and by arranging the ball head 63, the angle of the nozzle 64 can be adjusted. The nozzle 64 is arranged in a duckbill shape, which can increase the contact surface between the airflow and the inner wall of the dust collector branch pipe 1.

[0033] In a specific embodiment, an air jet hole 65 is provided on the front side of the nozzle 64. The air jet hole 65 is arranged in a trumpet shape. The inside of the nozzle 64 is a large opening, and the outside of the nozzle 64 is a small opening, which can increase the pressure of the air flow and further improve the blowing effect.

[0034] Working principle: When the spraying device for the de-dust removal equipment is in use, first install the nozzle assembly 6 on the spraying pipe 2 through the short pipe 4 and the elbow 5, adjust the height position of the spraying pipe 2 through the support assembly, and then place the installed spraying assembly into the dust collector branch pipe 1 through the manhole door 7. During the operation of the glass kiln furnace, the dust-containing flue gas coming out of the denitrification tower flows through the dust collector branch pipe 1. At the same time, compressed air is generated by the air compressor 10, and the three-piece pneumatic ball valve 9 is opened by the controller 11. The air flow is transported to the inside of the spraying pipe 2 through the connecting pipe 8, and then the loose dust accumulation inside the dust collector branch pipe 1 is blown away by a number of nozzle assemblies 6 arranged in the spraying pipe 2, and the flue gas flowing through the dust collector branch pipe 1 is brought into the dust collector to prevent the dust in the flue gas from being deposited at the bottom of the dust collector branch pipe 1 in large quantities, affecting the operation effect of the dust removal system.

[0035] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A blowing device for a de-pinning dust removal device, characterized in that: include: A dust collector branch pipe, the dust collector branch pipe is used to connect the de-pinning tower and the dust collector main pipe, and a blowing component is arranged inside the dust collector branch pipe, and the blowing component is used to blow and clean the loose dust accumulation inside the dust collector branch pipe; The spray assembly includes a spray pipe, at least one end of which is connected to an air compressor through a connecting pipe, and the air compressor is used to provide compressed air to the inside of the spray pipe. The spray pipe is provided with a plurality of groups of nozzle assemblies, and the compressed air inside the spray pipe is sprayed out through the nozzle assemblies to disperse the loose dust accumulation inside the branch pipe of the dust collector, and the smoke flowing inside the branch pipe of the dust collector is brought into the dust collector; The spray pipe is placed inside the branch pipe of the dust collector through a supporting assembly.

2. The blowing device for the pin-removing dust removal equipment according to claim 1, characterized in that: The nozzle assembly is communicated with the interior of the spraying pipeline through an elbow and a short pipe.

3. The blowing device for the pin-removing dust removal equipment according to claim 1, characterized in that: The connecting pipe is divided into two sections, the inner section of the connecting pipe is connected to the injection pipe, and the outer section of the connecting pipe is connected to the air compressor. The inner and outer sections of the connecting pipe are connected through connecting joints arranged on the inner and outer walls of the dust collector branch pipe.

4. The blowing device for the pin-removing dust removal equipment according to claim 1, characterized in that: A manhole door is provided below the branch pipe of the dust collector, and the manhole door is used to place the spray assembly into the branch pipe of the dust collector.

5. The blowing device for the pin-removing dust removal equipment according to claim 1, characterized in that: The support assembly includes a support sleeve, which is installed obliquely below the spray pipe. The lower end of the support sleeve is threadedly connected to a support leg, and the upper end of the support leg is provided with a thread for rotating the support leg into the support sleeve to adjust the height of the spray assembly.

6. The blowing device for the pin-removing dust removal equipment according to claim 1, characterized in that: The nozzle assembly comprises a connector, one end of which is connected to an elbow, and the other end of which is connected to a connecting nut, a ball head is arranged inside the connecting nut, and the ball head is connected to a nozzle.

7. The blowing device for the pin removal and dust removal equipment according to claim 6 is characterized in that: An air jet hole is arranged at the front side of the nozzle, and the air jet hole is arranged in a trumpet shape.

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