Lime slurry spray gun suitable for waste incineration

Abstract

The utility model relates to a lime slurry spray gun suitable for waste incineration. The lime slurry spray gun comprises a gun head, an outer pipe and an inner pipe, the gun head comprises a gun head shell and a gun head seat; the inner pipe is arranged in the outer pipe, an airflow channel is formed between the inner wall of the outer pipe and the outer wall of the inner pipe, and an inner hole of the inner pipe forms a slurry channel; one end of the gun head shell is connected to the gun head base, the other end of the gun head shell is a spherical face, a nozzle is formed in the spherical face, and a mixing cavity is formed in the inner side of the spherical face. The gun head seat is connected to the outer tube; the gun head seat comprises a flow divider and a spiral nozzle; a slurry outlet hole is formed in the middle of the flow divider, and flow dividing holes are formed in the periphery of the slurry outlet hole; the inner pipe is connected with the gun head seat; the spiral nozzle is positioned in the mixing cavity; the slurry channel is communicated with the spiral nozzle through the slurry outlet hole; the airflow channel is communicated with the mixing cavity through the shunting hole; an air inlet connector communicated with the airflow channel is arranged on the outer pipe, and a slurry connector is arranged at one end of an inner hole of the inner pipe. The device can replace an atomizer, and is simple and convenient to operate and maintain on site and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage incineration and relates to a lime slurry spray gun suitable for garbage incineration. Background Art

[0002] Waste incineration power generation refers to a form of power generation that burns urban solid waste in special incineration boilers and then generates electricity through steam turbine generator sets.

[0003] During the power generation and production operation, a large amount of acid gas will be generated during the incineration process. For this reason, incineration power plants are generally equipped with a deacidification system to purify the acid gas (SO2, HCl). In the flue gas purification process of garbage incineration power generation, the semi-dry method is mainly used for desulfurization. A separate atomizer is used to continuously spray lime slurry to make the lime slurry react with the acid gas, thereby purifying the acid gas. The current atomizer is not only large in size and high in cost, but also cannot guarantee the continuous transportation and injection of lime slurry when the atomizer is replaced or fails. The general dry powder system + bag adsorption process cannot effectively control the flue gas parameters for a long time. The acid gas does not exceed the standard, and there is an environmental hazard. Therefore, how to use simpler equipment to replace the atomizer has become a new research direction. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the above-mentioned problem and provide a lime slurry spray gun suitable for waste incineration.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A lime slurry spray gun suitable for garbage incineration comprises a gun head, an outer tube and an inner tube; the gun head comprises a gun head shell and a gun head seat; the inner tube is arranged in the outer tube, an air flow channel is formed between the inner wall of the outer tube and the outer wall of the inner tube, and an inner hole of the inner tube forms a slurry channel; one end of the gun head shell is connected to the gun head seat, and the other end is a spherical surface, a nozzle is opened on the spherical surface, and the inner side of the spherical surface is a mixing chamber; the gun head seat is connected to the outer tube;

[0007] The gun head seat includes a diverter and a spiral nozzle; a slurry outlet hole is provided in the middle of the diverter, and diverter holes are provided around the slurry outlet hole; the inner tube is connected to the gun head seat, and the spiral nozzle is located in the mixing chamber; the slurry channel is connected to the spiral nozzle through the slurry outlet hole; the air flow channel is connected to the mixing chamber through the diverter hole; the outer tube is provided with an air inlet joint connected to the air flow channel for connecting compressed gas, and a slurry joint is provided at one end of the inner hole of the inner tube for connecting lime slurry.

[0008] Furthermore, a plurality of the diversion holes are distributed in a circular array.

[0009] Furthermore, a conical sleeve is provided on the outlet side of the diverter hole; the inner hole of the conical sleeve is a conical hole, and the end close to the diverter hole is the large end; the diverter hole is connected with the mixing chamber through the conical hole; and the airflow is accelerated by the constriction structure.

[0010] Furthermore, the spiral nozzle is fixedly connected to one end of the slurry outlet hole through a thread.

[0011] Furthermore, the nozzle is located at the center of the spherical surface and directly faces the spiral nozzle.

[0012] Furthermore, the air inlet joint is arranged on the outer wall of the outer tube, the inner tube is coaxially arranged with the outer tube, and a sealing head is mounted on the end of the inner tube away from the gun head, and one end of the airflow channel is blocked by the sealing head.

[0013] Furthermore, the gun head, outer tube and inner tube are made of 316L stainless steel, which is resistant to high temperature and corrosion.

[0014] The beneficial effects of the utility model are:

[0015] 1. In the utility model, the air flow channel surrounds the slurry channel, and the lime slurry is sprayed into the mixing chamber through the spiral nozzle. After the lime slurry is tangent to and collides with the continuously decreasing spiral surface, it becomes tiny liquid droplets and sprays out to form a mist. After the air flow enters the mixing chamber through the diverter, it mixes with the mist droplets and drives them to be sprayed outward through the nozzle. The nozzle is located on the spherical surface, which can reduce the drying accumulation of the slurry after the atomization spray on the gun head due to unstable dirt pressure, and delay the blockage of the nozzle.

[0016] 2. The utility model adopts a spiral nozzle with a droplet diameter of 50 to 110 microns, which makes the spray gun atomization effect better, the solution contacts the acidic gas in the flue gas more evenly, the reaction is more complete, and the efficiency is higher; the flow rate reaches 2t / h to 5t / h, and the effective atomization distance reaches more than 3.5M, which can meet more working conditions.

[0017] 3. The gun head of the utility model adopts a threaded connection combination, which can realize quick connection and replace the atomizer. The on-site operation and maintenance are simple and convenient; the spray gun is made of 316L stainless steel material as a whole, which is resistant to high temperature and corrosion and has a long service life.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a lime slurry spray gun suitable for garbage incineration.

[0021] Figure 2 This is a schematic diagram of the structure of the gun head.

[0022] Figure 3 Schematic diagram of the gun head shell.

[0023] Figure 4 Schematic diagram of the diverter.

[0024] Figure 5 Schematic diagram of the tapered sleeve.

[0025] Figure 6 Schematic diagram of the bolt nozzle.

[0026] Figure markings: 1-outer tube; 2-inner tube; 3-gun head shell; 4-diverter; 5-spiral nozzle; 6-conical sleeve; 7-slurry channel; 8-air flow channel; 9-slurry outlet hole; 10-air inlet joint; 11-slurry joint; 12-mixing chamber; 13-nozzle; 14-flange; 15-end. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] See also Figures 1 to 6 , is a lime slurry spray gun suitable for garbage incineration, comprising a gun head, an outer tube 1, and an inner tube 2; the gun head comprises a gun head shell 3 and a gun head seat; the inner tube 2 is arranged in the outer tube 1, and an air flow channel 8 is formed between the inner wall of the outer tube 1 and the outer wall of the inner tube 2, and the inner hole of the inner tube 2 forms a slurry channel 7; one end of the gun head shell 3 is connected to the gun head seat, and the other end is a spherical surface, a nozzle 13 is opened on the spherical surface, and the inner side of the spherical surface is a mixing chamber 12; the gun head seat is connected to the outer tube 1.

[0031] The gun head seat includes a flow divider 4 and a spiral nozzle 5; a slurry outlet hole 9 is arranged in the middle of the flow divider 4, and flow divider holes are arranged around the slurry outlet hole 9; the inner tube 2 is connected to the gun head seat, and the spiral nozzle 5 is located in the mixing chamber 12, and the spiral nozzle 5 is fixedly connected to one end of the slurry outlet hole 9 by screw threads. The slurry channel 7 is connected to the spiral nozzle 5 through the slurry outlet hole 9, and the nozzle 13 is located at the center of the spherical surface and directly opposite to the spiral nozzle 5; the air flow channel 8 is connected to the mixing chamber 12 through the flow divider hole; the outer tube 1 is equipped with an air inlet joint 10 connected to the air flow channel 8 for connecting compressed gas, and a slurry joint 11 is installed at one end of the inner hole of the inner tube 2 for connecting lime slurry.

[0032] There are multiple diverter holes distributed in a circular array. A conical sleeve 6 is installed on the outlet side of the diverter hole; the outer circle of the conical sleeve 6 is connected to the diverter 4 through a thread, the inner hole of the conical sleeve 6 is a conical hole, and the end close to the diverter hole is the large end, and the spiral nozzle 5 passes through the conical hole; the diverter hole is connected to the mixing chamber 12 through the conical hole, and the airflow is accelerated under the action of the conical hole.

[0033] The air inlet connector 10 is arranged on the outer wall of the outer tube 1, the inner tube 2 is coaxially arranged with the outer tube 1, and a sealing head 15 is mounted on the end of the inner tube 2 away from the gun head, and one end of the air flow channel 8 is blocked by the sealing head 15. A flange 14 is also installed on the outer wall of the outer tube 1 for installation and fixing.

[0034] In this embodiment, the material of the gun head, the outer tube 1 and the inner tube 2 is 316L stainless steel.

[0035] When this embodiment is in use, 2-3 lime slurry spray guns suitable for waste incineration are arranged on the inlet closing surface of the spray tower to form a mist-like lime droplet cross section, which can basically cover the entire flue gas channel, thereby achieving the purpose of removing acidic gases in the flue gas and effectively controlling the emission of acidic gases for a long time.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A lime slurry spray gun suitable for waste incineration, characterized in that: It comprises a gun head, an outer tube and an inner tube; the gun head comprises a gun head outer shell and a gun head seat; the inner tube is arranged in the outer tube, the inner wall of the outer tube and the outer wall of the inner tube form an air flow channel, and the inner hole of the inner tube forms a slurry channel; one end of the gun head outer shell is connected to the gun head seat, and the other end is a spherical surface, a nozzle is opened on the spherical surface, and the inner side of the spherical surface is a mixing chamber; the gun head seat is connected to the outer tube; The gun head seat includes a diverter and a spiral nozzle; a slurry outlet hole is provided in the middle of the diverter, and diverter holes are provided around the slurry outlet hole; the inner tube is connected to the gun head seat, and the spiral nozzle is located in the mixing chamber; the slurry channel is connected to the spiral nozzle through the slurry outlet hole; the air flow channel is connected to the mixing chamber through the diverter hole; the outer tube is provided with an air inlet joint connected to the air flow channel for connecting compressed gas, and a slurry joint is provided at one end of the inner hole of the inner tube for connecting lime slurry.

2. The lime slurry spray gun suitable for waste incineration according to claim 1, characterized in that: A plurality of the diversion holes are distributed in a circular array.

3. The lime slurry spray gun suitable for waste incineration according to claim 1, characterized in that: A conical sleeve is provided on the outlet side of the diverter hole; the inner hole of the conical sleeve is a conical hole, and the end close to the diverter hole is a large end; the diverter hole is connected with the mixing chamber through the conical hole.

4. The lime slurry spray gun suitable for waste incineration according to claim 1, characterized in that: The spiral nozzle is fixedly connected to one end of the pulp outlet hole through a thread.

5. The lime slurry spray gun suitable for waste incineration according to claim 4, characterized in that: The nozzle is located at the center of the spherical surface and is directly opposite to the spiral nozzle.

6. The lime slurry spray gun suitable for waste incineration according to claim 1, characterized in that: The air inlet joint is arranged on the outer wall of the outer tube, the inner tube is coaxially arranged with the outer tube, and a sealing head is mounted on the end of the inner tube away from the gun head, and one end of the air flow channel is blocked by the sealing head.

7. The lime slurry spray gun suitable for waste incineration according to claim 1, characterized in that: The gun head, outer tube and inner tube are made of 316L stainless steel.

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