Yellow phosphorus tail gas off-line pollution discharge device
By designing an offline yellow phosphorus tail gas discharge device with a conical trough body and an external liquid seal trough structure, the blockage problem caused by the accumulation of impurities in the yellow phosphorus tail gas was solved, stable production and safety were achieved, and production interruptions and safety hazards were avoided.
Patent Information
- Application Number
- CN202422592802.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-26
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-26
AI Technical Summary
Impurities in yellow phosphorus tail gas easily accumulate, causing blockage of the trough-type integrated water seal, affecting production smoothness and posing a safety hazard. Existing treatment methods consume manpower and heat sources, and there is a risk of explosion.
The yellow phosphorus tail gas offline sewage discharge device adopts a conical trough body and an external liquid seal trough structure. Impurities are washed by electric heating rods and sprays. The impurities are discharged under water flushing. Offline cleaning is achieved using the liquid seal trough and sewage pipe to avoid production interruption and safety hazards.
The equipment has a simple structure, reduces initial investment costs, operates stably, avoids blockage, ensures smooth production, eliminates safety hazards, and improves the safety of the production environment.
Smart Images
Figure CN223306714U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of yellow phosphorus tail gas treatment, in particular to an off-line sewage discharge device for yellow phosphorus tail gas. Background Art
[0002] Yellow phosphorus tail gas contains many impurities, with complex components, high viscosity, and is flammable and explosive. When the system is cut off or shut down, a water seal is often used to cut off and seal to prevent air from entering the system and causing an explosion. The yellow phosphorus industry traditionally uses a trough-type integrated water seal as a seal for system shutdown and switching. The trough-type integrated water seal structure is a device composed of an outer shell and an inner cover. The distance between the outer shell and the inner cover is 100mm. Due to its own characteristics, the transported yellow phosphorus tail gas has viscous impurities that accumulate at the bottom of the trough after a long period of operation and are difficult to discharge, forming a thick accumulation that occupies the trough space. In addition, due to the high viscosity of the impurities, it cannot be discharged, resulting in a blockage of the air inlet pipe, resulting in poor air extraction, which seriously affects normal production.
[0003] When a trough-type integrated water seal becomes clogged, a common solution is to heat the tank until it reaches 70°C, allowing it to melt. A siphoning method (siphoning while adding water to ensure the liquid seal height) is then used to drain the sticky impurities from the tank to the outside of the tank, reducing the accumulation thickness and increasing the tank space. This operation wastes manpower and heat sources and leads to reduced production load and low output during the treatment process. Furthermore, it poses a significant safety hazard (siphoning while adding water to ensure the liquid seal height). Insufficient liquid seal height can lead to an immediate system explosion. Summary of the Invention
[0004] In view of the deficiencies in the prior art, the present invention provides an offline yellow phosphorus tail gas discharge device, which solves the problems raised in the above-mentioned background technology.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an offline yellow phosphorus tail gas sewage discharge device, comprising a support leg and a rib plate, the top of the support leg is fixedly connected to the rib plate, the surface of the rib plate and the surface of the support leg are fixedly connected with a liquid seal groove, the bottom of the liquid seal groove is connected to a sewage pipe, the surface of the sewage pipe is provided with a sewage valve, the right side of the liquid seal groove is connected to an overflow pipe, the inner cavity of the liquid seal groove is provided with an electric heating rod, the inner cavity of the liquid seal groove is connected to a liquid seal pipe, a ball valve is provided in the middle of the surface of the liquid seal pipe, the top of the ball valve is connected to a lower cone, and the top of the lower cone is connected to an upper cylinder.
[0006] Preferably, the top of the left side of the upper vertebral body is connected to a water seal inlet pipe, the right side of the upper cylindrical body is connected to a water seal outlet pipe, and the surface of the water seal outlet pipe is fixedly connected to an observation cup.
[0007] Preferably, an air inlet pipe is passed through the left side of the top of the upper cylindrical body, an air outlet pipe is passed through the right side of the top of the upper cylindrical body, and a spray pipe is passed through the surface of the air outlet pipe.
[0008] Preferably, a bracket is fixedly connected to the surface of the air intake pipe.
[0009] The utility model provides an offline yellow phosphorus tail gas discharge device, which has the following beneficial effects:
[0010] The yellow phosphorus tail gas offline sewage discharge device has a simple and clear equipment structure design and occupies a small area, which effectively reduces the initial investment cost. Its operation is stable and not prone to blockage, ensuring smooth production. In terms of sewage treatment, the equipment adopts an out-of-tank operation method to avoid interruptions in the production process and ensure the stability of production load. In addition, this design completely eliminates the safety hazards that may be caused by sewage discharge operations, improves the safety of the overall production environment, and provides a strong guarantee for the stable operation of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is the front view of the structure of the present utility model;
[0012] Figure 2 It is a top view of the upper cylindrical structure of the utility model.
[0013] In the figure, 1-support leg, 2-rib plate, 3-liquid seal groove, 4-drain pipe, 5-drain valve, 6-overflow pipe, 7-electric heating rod, 8-liquid seal pipe, 9-ball valve, 10-lower cone, 11-upper cylinder, 12-water seal inlet pipe, 13-water seal outlet pipe, 14-observation cup, 15-air inlet pipe, 16-air outlet pipe, 17-spray pipe, 18-bracket. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0015] See also Figure 1-2The present practical embodiment provides a technical solution: an offline yellow phosphorus tail gas sewage discharge device, comprising a support leg 1 and a rib plate 2, the top of the support leg 1 is fixedly connected to the rib plate 2, the surface of the rib plate 2 and located on the surface of the support leg 1 is fixedly connected with a liquid seal groove 3, the bottom of the liquid seal groove 3 is connected with a sewage pipe 4, the surface of the sewage pipe 4 is provided with a sewage valve 5, the right side of the liquid seal groove 3 is connected with an overflow pipe 6, the inner cavity of the liquid seal groove 3 is provided with an electric heating rod 7, the inner cavity of the liquid seal groove 3 is connected with a liquid seal pipe 8, and a ball valve is provided in the middle of the surface of the liquid seal pipe 8. 9. The top of the ball valve 9 is connected to the lower cone 10, the top of the lower cone 10 is connected to the upper cylinder 11, the top of the left side of the upper cone 11 is connected to the water seal inlet pipe 12, the right side of the upper cylinder 11 is connected to the water seal outlet pipe 13, the surface of the water seal outlet pipe 13 is fixedly connected to the observation cup 14, the left side of the top of the upper cylinder 11 is penetrated by the air inlet pipe 15, the right side of the top of the upper cylinder 11 is penetrated by the air outlet pipe 16, the surface of the air outlet pipe 16 is penetrated by the spray pipe 17, and the surface of the air inlet pipe 15 is fixedly connected to the bracket 18.
[0016] Working principle; Equipment composition: Conical tank body + external liquid seal tank structural water seal consists of conical tank body, external liquid seal tank, electric heating rod, valve, liquid seal pipe, water inlet pipe, sewage pipe, overflow pipe, spray pipe. Yellow phosphorus tail gas enters the conical tank body through the air inlet pipe (the insertion depth of the air inlet pipe meets 20 times the value of the system pressure when the system is switched). The tail gas is exhausted by the fan and comes out from the air outlet pipe. A nozzle is set at the end of the air outlet pipe to spray and wash the impurities in the tail gas. The washed impurities are discharged in the water. Under the flushing environment, the liquid is discharged to the liquid seal tank outside the cone tank along the connecting pipe (the liquid seal height of the liquid seal tank meets 3 times the limit vacuum of the fan). When the impurities in the liquid seal tank accumulate to a certain thickness and need to be cleaned, close the spray water valve, stop spraying water, close the valve installed between the cone tank and the liquid seal tank, open the drain valve at the bottom of the liquid seal tank, and after the phosphorus-containing sludge is discharged, close the drain valve, replenish the liquid level of the liquid seal tank, open the cone valve, start spraying water, and enter the normal operation mode.
[0017] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations,
[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An off-line yellow phosphorus tail gas discharge device, comprising a support leg (1) and a rib plate (2), wherein the top of the support leg (1) is fixedly connected to the rib plate (2), and is characterized in that: A liquid sealing groove (3) is fixedly connected to the surface of the rib plate (2) and the surface of the support leg (1); the bottom of the liquid sealing groove (3) is connected to a drain pipe (4); a drain valve (5) is provided on the surface of the drain pipe (4); the right side of the liquid sealing groove (3) is connected to an overflow pipe (6); an electric heating rod (7) is provided in the inner cavity of the liquid sealing groove (3); the inner cavity of the liquid sealing groove (3) is connected to a liquid sealing pipe (8); a ball valve (9) is provided in the middle of the surface of the liquid sealing pipe (8); the top of the ball valve (9) is connected to a lower cone (10); and the top of the lower cone (10) is connected to an upper cylinder (11).
2. A yellow phosphorus tail gas offline sewage discharge device according to claim 1, characterized in that: The top of the left side of the upper cylindrical body (11) is connected to a water seal inlet pipe (12), and the right side of the upper cylindrical body (11) is connected to a water seal outlet pipe (13). The surface of the water seal outlet pipe (13) is fixedly connected to an observation cup (14).
3. A yellow phosphorus tail gas offline sewage discharge device according to claim 1, characterized in that: An air inlet pipe (15) is passed through the left side of the top of the upper cylindrical body (11), an air outlet pipe (16) is passed through the right side of the top of the upper cylindrical body (11), and a spray pipe (17) is passed through the surface of the air outlet pipe (16).
4. A yellow phosphorus tail gas offline sewage discharge device according to claim 3, characterized in that: A bracket (18) is fixedly connected to the surface of the air intake pipe (15).