NDS system bottom purging device
The NDS system bottom blowout device effectively addresses desulfurization slag accumulation by providing adjustable cleaning capabilities, enhancing maintenance efficiency and preventing reactor blockages.
Patent Information
- Application Number
- CN202422007651.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The bottom of the existing NDS reactor is prone to blockage due to desulfurization ash, which is difficult to clean manually, and the automatic purge effect is poor, which affects the system operation and maintenance costs.
A bottom purge device including the main air pipe, cantilever and purge branch pipe is designed. Through the combined structure of the main air pipe and cantilever, combined with the design of the handle and the chute, the bottom of the NDS reactor is achieved to adapt to reactors of different widths.
It realizes comprehensive cleaning of the bottom of a longer NDS reactor, saves the physical strength and time of operation and maintenance personnel, is easy to install and disassemble, and has strong adaptability.
Smart Images
Figure CN223097573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bottom purging device for an NDS system, belonging to the technical field of reactor purging devices. Background Art
[0002] The NDS desulfurization system is a commonly used low-temperature desulfurization system for glass furnaces. It relies on the NDS reactor to input humidified circulating lime for flue gas desulfurization. This scheme has high desulfurization efficiency, low pollution, a small construction scale, and an overall economical process. Due to the large differences in on-site working conditions, the properties of the large amount of circulating desulfurization ash input cannot be generalized. Once the desulfurization ash has high viscosity, it is easy to form balls and lumps, resulting in accumulation at the bottom of the NDS reactor, causing blockage in the operation of the flue gas system, increasing the operation and maintenance costs, and in severe cases, even causing the system to shut down for maintenance. Currently, for this desulfurization ash blockage situation, manual ash cleaning work or the configuration of pipelines for automatic purging work is usually required. Manual cleaning is limited by the long width of the elbow at the bottom of the NDS, making the operation difficult. Due to different ash accumulation situations under different working conditions, the automatic purging pipelines are often difficult to be uniformly adapted, and the effect is average. Content of the Utility Model
[0003] The purpose of the utility model is to provide a bottom purging device for an NDS system, which can effectively meet the bottom cleaning of the NDS reactor with a long width and can maximize the purging space.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A bottom purging device for an NDS system includes a main air pipe and two cantilevers. One end of each of the two cantilevers is respectively sleeved on the two end pipes of the main air pipe, and the other ends of the two cantilevers are correspondingly hung on the support members on the inner walls of both sides of the reactor.
[0006] One end of the main air pipe is provided with a plug, and the other end is installed with an air inlet valve connected to an external air pipe for sending gas into the main air pipe. A plurality of purging branch pipes are arranged on the pipe body of the main air pipe located inside the reactor.
[0007] Preferably, two handles are correspondingly arranged on the pipe body of the main air pipe on both sides of the purging branch pipes, and the handles are located outside the NDS reactor.
[0008] Preferably, along the length direction of the main air pipe, two sliding grooves are symmetrically opened on the outer sides of the two pipe bodies of the main air pipe. The ends of the handles are embedded in the corresponding sliding grooves on each side to be slidably connected to the main air pipe.
[0009] Preferably, the purging branch pipes are arranged in parallel.
[0010] Preferably, the handles and the purging branch pipes are not in the same plane.
[0011] Preferably, there are at least 3 purge branches.
[0012] The beneficial effects of the present utility model are as follows:
[0013] 1. It can cope with the purging of a relatively long NDS reactor and can ensure the purging of the vast majority of the space at the elbow at the bottom of the NDS reactor, saving the physical strength and time of maintenance personnel;
[0014] 2. The installation and disassembly processes are simple, facilitating long-term and multiple uses. Description of the Drawings
[0015] Figure 1 It is a schematic structural diagram of the purging device;
[0016] Figure 2 It is a schematic diagram of the connection between the handle and the main air pipe;
[0017] Figure 3 It is a schematic diagram of the displacement of the purging device inside the NDS reactor.
[0018] The meanings of the main reference numerals in the figures are as follows:
[0019] 1. Main air pipe, 2. Cantilever, 3. Plug, 4. Intake valve, 5. Purge branch, 6. Handle, 7. Slide groove, 8. Support member. Specific Embodiments
[0020] The following specifically introduces the present utility model in conjunction with the drawings and embodiments.
[0021] This embodiment provides a purging device for the bottom of the NDS system. As shown in Figures 1-3 the figure, it includes a main air pipe 1 and two cantilevers 2. One end of each of the two cantilevers 2 is respectively sleeved on the two end pipes of the main air pipe 1, and the other end of the two cantilevers 2 is correspondingly hung on the support members 8 (fixed steel pipes) on the inner walls on both sides of the reactor; a plug 3 is provided at one end of the main air pipe 1, and an intake valve 4 connected to an external air pipe and used to send gas into the main air pipe 1 is installed at the other end. Four purge branches 5 are arranged in parallel on the pipe body of the main air pipe 1 located inside the reactor. The above structure enables the main air pipe 1 to be rotated and its orientation to be changed, thereby increasing the coverage area of the purge branches 5 and achieving more comprehensive purging; further, in order to facilitate the rotation or displacement of the main air pipe 1, two handles 6 that are misaligned with the purge branches 5 are correspondingly provided on the pipe body of the main air pipe 1 on both sides of the purge branches 5 and outside the NDS reactor. In this way, when rotating the main air pipe 1 to change the jet direction of the purge branches 5, only the handles 6 need to be rotated, improving the convenience.
[0022] Furthermore, to facilitate the adjustment of the position of the handle 6 according to the width of different NDS reactors, along the length direction of the main air pipe 1, two sliding grooves 7 are symmetrically opened on the outer sides of the two pipe bodies of the main air pipe 1. The end of the handle 6 is embedded in the corresponding sliding groove 7 and is slidably connected to the main air pipe 1, so that the distance between the handles 6 can adapt to NDS reactors of more widths.
[0023] In practical applications, there is 1 main air pipe 1 seamless steel pipe; with a length of (L + 1000) mm, where L is the width of the elbow of the NDS reactor. Four cuts are made at intervals of (L / 5) on the pipe, and Y-shaped slides are opened at the bottoms of the two pipe bodies on both sides of the main air pipe 1; there are 4 purge branch pipes 5 seamless steel pipes, with a length of 200 mm, and are respectively welded at the 4 cut positions on the main air pipe 1.
[0024] There are 2 handles 6 seamless steel pipes, with a length of 500 mm, and one end forms a Y-shaped structure and is embedded in the slide of the main air pipe 1; the plug 3 is a 5-mm steel plate, welded at the tail of the main air pipe 1 to play a plugging role. The air inlet valve 4 is a Q11F-16DN25 manual valve, installed at the head of the main air pipe 1 to control the access of the gas source; when installing the air inlet valve 4, it can be connected by screwing the two ends of the short connecting pipe into the main air pipe 1 and the inside of the air inlet valve 4 respectively to prevent gas leakage from the sliding groove 7.
[0025] The cantilever 2 is a 100-mm-wide nylon cloth belt (connected at both sides), one end is sleeved on the pipe body of the main air pipe 1 between the handle 6 and the purge branch pipe 5, and the other end is hung on the support 8 on the inner wall of the elbow of the NDS reactor; there are 2 supports 8 seamless steel pipes, with a length of 100 mm, and are respectively welded on the inner walls of both sides of the elbow of the NDS reactor.
[0026] Before purging, wind one end of the cantilever 2 around the support 8, pass the main air pipe 1 through the elbow of the NDS reactor through the manhole, and suspend it through the cantilever 2 so that the purge branch pipe 5 is located inside the elbow, while the handle 6 is located outside the elbow. Connect it to the external compressed air pipe through the air inlet valve 4, and open the air inlet valve 4 so that the compressed air is ejected through the purge branch pipe 5 and acts on the inner wall of the elbow. After purging for a period of time, the operator rotates the handle 6 located outside the elbow of the NDS reactor to control the blowing direction of the purge branch pipe 5 (or move the main air pipe 1 axially to change the purging position), continue purging, repeat the above operation, and disassemble the purging device after comprehensive purging.
[0027] The above are only the preferred embodiments of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the principle of the utility model patent, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model patent.
Claims
1. A bottom purging device for an NDS system, characterized in that, It includes a main air pipe and two cantilevers. One end of each of the two cantilevers is respectively sleeved on the two pipe bodies at the two ends of the main air pipe, and the other end of the two cantilevers is correspondingly hung on the support members on the inner walls on both sides of the reactor. One end of the main air pipe is provided with a plug, and the other end is installed with an intake valve connected to an external air pipe for sending gas into the main air pipe. A plurality of purge branch pipes are arranged on the pipe body of the main air pipe located inside the reactor.
2. The bottom purging device of the NDS system according to claim 1, wherein Two handles are correspondingly arranged on the pipe bodies of the main air pipe on both sides of the purge branch pipes, and the handles are located outside the NDS reactor.
3. The bottom purging device of the NDS system according to claim 2, characterized in that, Along the length direction of the main air pipe, two sliding grooves are symmetrically formed on the outer sides of the two pipe bodies of the main air pipe. The end of the handle is embedded in the corresponding sliding groove and is slidably connected to the main air pipe.
4. The bottom purging device of the NDS system according to claim 1, wherein The purge branch pipes are arranged in parallel.
5. The bottom purging device of the NDS system according to claim 2, characterized in that, The handle and the purge branch pipe are not in the same plane.
6. The bottom purging device of the NDS system according to claim 1, characterized in that, There are at least 3 purge branch pipes.