Spraying device for wet desulphurization process of thermal power plant

Abstract

The utility model discloses a spray device for a thermal power plant wet desulphurization process, which comprises a spray pipeline, the spray pipeline comprises front, rear, left, right and lower side pipe walls and an upper side pipe wall which are integrally formed, the lower side pipe wall of the spray pipeline is provided with a plurality of threaded holes, the threaded holes are connected with spray heads, the cross section of each spray head is T-shaped, and the spray heads are connected with the spray pipeline through bolts. A communicating pipe is fixedly connected to the right side wall of the spraying pipeline, extends out of the desulfurizing tower and is connected to the slurry supply pipeline, and a flow monitor is arranged on the communicating pipe. The spraying pipeline is detachable, so that stable mounting of the spraying head is guaranteed, and the whole spraying pipeline is convenient to detach and clean when the interior of the spraying pipeline is blocked; on the other hand, the slurry supply pipeline is easy to disassemble and assemble, and the slurry supply pipeline is convenient to clean due to the design of the slurry supply pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization equipment, in particular to a spray device used in a wet desulfurization process of a thermal power plant. Background Art

[0002] The flue gas generated by thermal power plants is generally desulfurized in the form of wet desulfurization, which is generally carried out in the form of spraying desulfurization slurry. The existing desulfurization slurry spray structure generally has an annular spray pipe in the desulfurization tower, and a spray head is arranged under the spray pipe. However, the design of the annular pipe is inconvenient to clean and even requires cutting the pipe. In order to solve the above problems, the existing Chinese utility model patent with application number 202123276321.9 discloses a flue gas desulfurization tower spray device, and its spray pipe can be detachably plugged into the tower body, which can realize convenient disassembly and assembly, and is conducive to disassembly and cleaning of the pipe. However, the overall spray pipe is still an integrated design, and the blockage in the pipe cannot be easily cleaned. Utility Model Content

[0003] The utility model aims to provide a spraying device that can ensure the spraying effect and is easy to disassemble and assemble to achieve efficient cleaning inside the pipeline in order to solve the shortcomings of the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme for a spray device for a wet desulfurization process in a thermal power plant:

[0005] A spray device for a wet desulfurization process in a thermal power plant comprises a spray pipe, wherein the spray pipe comprises five integrally formed side pipe walls including front, back, left, right and bottom and an upper side pipe wall, a plurality of threaded holes are provided on the lower side pipe wall of the spray pipe, a spray head is connected to the threaded holes, the spray head has a T-shaped cross-section, a connecting pipe is fixedly connected to the right side wall of the spray pipe, the connecting pipe extends out of a desulfurization tower and is connected to a slurry supply pipe, and a flow monitor is provided on the connecting pipe.

[0006] The utility model is a further improvement of a spray device for a wet desulfurization process in a thermal power plant in that a thread is provided on the outer wall of the connecting pipe, threaded interfaces are provided on the two opposite side walls of the slurry supply pipe, the connecting pipe is threadedly connected to the threaded interfaces and passes through the slurry supply pipe, one end of the connecting pipe away from the spray pipe is closed, two groups of nuts are threadedly connected to the connecting pipe, the two groups of nuts are distributed on both sides of the slurry supply pipe and resist the slurry supply pipe, and the part of the connecting pipe located in the slurry supply pipe is provided with an opening.

[0007] The utility model is a further improvement of a spray device for a wet desulfurization process in a thermal power plant in that a connection port is provided at a side wall of the desulfurization tower, the connecting pipe is also screwed to the connection port, and the flow monitor is arranged outside the desulfurization tower.

[0008] The utility model is a further improvement on a spray device for a wet desulfurization process in a thermal power plant in that an auxiliary spray pipe and an auxiliary slurry supply pipe are arranged above the spray pipe and the slurry supply pipe, a switch valve is arranged on the auxiliary spray pipe, the auxiliary spray pipe is staggered relative to the spray pipe, and the slurry supply pipe and the auxiliary slurry supply pipe are connected to the slurry pool through a fixed pipe.

[0009] The utility model is a further improvement of a spray device for a wet desulfurization process in a thermal power plant in that a spray pipeline and an auxiliary spray pipeline form a group of combined spray pipes, and a plurality of groups of the combined spray pipes are provided.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The spray pipe of the utility model is detachable, thereby ensuring stable installation of the spray head while facilitating overall disassembly and cleaning when there is internal blockage; on the other hand, it is also easy to disassemble and assemble compared to the slurry supply pipe, and the design of the slurry supply pipe also facilitates the cleaning of the slurry supply pipe itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0014] In the figure: 1 spray pipe, 2 spray head, 3 connecting pipe, 4 flow monitor, 5 slurry supply pipe, 6 fixed pipe, 7 auxiliary spray pipe, 8 auxiliary slurry supply pipe, 9 nut. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1 and Figure 2As shown, a spray device for a wet flue gas desulfurization process in a thermal power plant includes a spray pipe 1. The spray pipe includes five integrally formed side pipe walls, front, back, left, right, and bottom, and an upper side pipe wall. The upper side pipe wall can be fastened and connected to the other pipe walls by bolts, and a sealing gasket can be added at the connection to ensure the sealing performance. A plurality of threaded holes are provided on the lower side pipe wall of the spray pipe, and a spray head 2 is connected to the threaded holes. The cross section of the spray head is T-shaped to ensure the stable connection of the spray head. A connecting pipe 3 is fixedly connected to the right side wall of the spray pipe, and the fixed connection method can be welding. The connecting pipe extends out of the desulfurization tower and is connected to the slurry supply pipe 5. A flow monitor 4 is provided on the connecting pipe.

[0017] Furthermore, threads are provided on the outer wall of the connecting pipe, threaded interfaces are provided on the opposite side walls of the slurry supply pipe, the connecting pipe is threadedly connected to the threaded interfaces and passes through the slurry supply pipe, the end of the connecting pipe away from the spray pipe is closed, two groups of nuts 9 are threadedly connected to the connecting pipe, the two groups of nuts are distributed on both sides of the slurry supply pipe and abut against the slurry supply pipe, and the part of the connecting pipe located in the slurry supply pipe is provided with an opening. The setting of the threaded interface of the slurry supply pipe ensures the stable arrangement of the connecting pipe and the spray pipe on the one hand, and is also conducive to the cleaning of the slurry supply pipe on the other hand.

[0018] A connection port is formed on the side wall of the desulfurization tower, and a connecting pipe is screwed to the connection port. A flow monitor is arranged on the outside of the desulfurization tower.

[0019] Auxiliary spray pipes 7 and auxiliary slurry supply pipes 8 are arranged above the spray pipes and the slurry supply pipes. A switch valve is arranged on the auxiliary spray pipes. The auxiliary spray pipes are arranged offset relative to the spray pipes. The slurry supply pipes and the auxiliary slurry supply pipes are connected to the slurry pool through fixed pipes 6. The spray pipes and auxiliary spray pipes are a group of combined spray pipes, and there are multiple groups of combined spray pipes. The lengths of the multiple groups of spray pipes and the number of spray heads thereon can be custom designed to achieve a better spray network, thereby ensuring a better desulfurization effect.

[0020] The working principle of the utility model is as follows: when working, the slurry in the slurry pool is pumped into the slurry supply pipe, enters each spray pipe and then goes to the spray head to carry out spray desulfurization treatment on the flue gas. According to the monitoring data of the flow monitor, when the flow rate decreases, that is, the spray pipe is blocked, the auxiliary spray pipe is used for auxiliary spraying to ensure the spraying effect; on the other hand, when the sulfur content of the flue gas is high, the auxiliary spray pipe can also be used; after monitoring that the flow rate is reduced, the spray pipe is quickly disassembled and cleaned to ensure subsequent use.

[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A spray device for wet desulfurization process in a thermal power plant, characterized in that: It includes a spray pipe, which includes five side pipe walls of front, back, left, right and bottom and an upper pipe wall that are integrally formed. A plurality of threaded holes are opened on the lower pipe wall of the spray pipe, and a spray head is connected to the threaded holes. The spray head has a T-shaped cross-section. A connecting pipe is fixedly connected to the right side wall of the spray pipe. The connecting pipe extends out of the desulfurization tower and is connected to the slurry supply pipe. A flow monitor is provided on the connecting pipe.

2. The spray device for wet desulfurization process in a thermal power plant according to claim 1, characterized in that: The connecting pipe is provided with threads on its outer wall, and threaded interfaces are opened on the two opposite side walls of the slurry supply pipe. The connecting pipe is screwed to the threaded interfaces and passes through the slurry supply pipe. The end of the connecting pipe away from the spray pipe is closed. Two groups of nuts are screwed on the connecting pipe, and the two groups of nuts are distributed on both sides of the slurry supply pipe and resist the slurry supply pipe. The part of the connecting pipe located in the slurry supply pipe is provided with an opening.

3. The spray device for wet desulfurization process in a thermal power plant according to claim 2, characterized in that: A connection port is formed on the side wall of the desulfurization tower, and the connecting pipe is also screwed to the connection port. The flow monitor is arranged outside the desulfurization tower.

4. The spray device for wet desulfurization process in a thermal power plant according to claim 3, characterized in that: Auxiliary spray pipes and auxiliary slurry supply pipes are arranged above the spray pipes and the slurry supply pipes. A switch valve is arranged on the auxiliary spray pipe. The auxiliary spray pipe is staggered relative to the spray pipe. The slurry supply pipe and the auxiliary slurry supply pipe are connected to the slurry pool through fixed pipes.

5. The spray device for wet desulfurization process in thermal power plant according to claim 4, characterized in that: The spray pipe and the auxiliary spray pipe form a group of combined spray pipes, and the combined spray pipes are provided in multiple groups.

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