Phosphorus burning tower

Abstract

The utility model discloses a phosphorus burning tower, and belongs to the technical field of phosphorus chemical industry. Comprising a first water cooling device, a tower body, a cold water tank, a spray gun support, a spray gun, a second water cooling device, a water receiving tank, a flushing water pipe, a spraying pipe and a plurality of nozzles on the spraying pipe, and the cold water tank and the first water cooling device are connected to form a water cooling circulation system; the water receiving tank is arranged on the tower body, the spray gun support is arranged in the water receiving tank or located over the water receiving tank, and the spray head sprays towards the top of the spray gun support; a water inlet of the flushing pipe is connected with the cold water tank; a water outlet of the flushing water pipe is output in two ways, one way is connected with a flushing opening of the spray gun through a pipeline with a third valve, and the other way is connected with the spraying pipe through a pipeline with a second valve; a water outlet in the bottom of the water receiving tank is connected with a second water cooling device through a pipeline, and the second water cooling device is connected with a spraying pipe through a pipeline with a first valve; the first valve is normally opened, the second valve is normally closed and is opened only when the second water cooling device is abnormal, and the third valve is intermittently opened.

Description

Technical Field

[0001] The utility model belongs to the technical field of phosphorus chemical industry, and particularly relates to a phosphorus burning tower which can be used for the production of phosphorus pentoxide or phosphoric acid. Background Art

[0002] The production of phosphorus pentoxide and phosphoric acid both require a phosphorus burning tower, which is used to burn molten yellow phosphorus to obtain phosphorus pentoxide, which is then cooled to obtain a phosphorus pentoxide product, and phosphorus pentoxide reacts with water to obtain phosphoric acid.

[0003] The existing phosphorus burning tower includes a first water cooling device, a vertically arranged tower body, a cold water tank on the top of the tower body, a spray gun seat at the bottom of the tower body, and a spray gun on the spray gun seat. The cold water tank is connected to the first water cooling device to form a water cooling circulation system. The spray gun seat is arranged obliquely outward from bottom to top and is provided with an oxygen inlet. The spray gun is provided with a yellow phosphorus inlet, a compressed air inlet, a flushing port, etc. For example, the patent with application number CN202120468717.4 discloses a gasification and cooling device for phosphorus pentoxide, comprising a phosphorus burning tower and a cooling tower arranged side by side on the left and right, and a vent pipe is provided between the top of the phosphorus burning tower and the top of the cooling tower; the device also includes a water-cooling tower, a hot water tank, a cold water tank, a gasification water tank at the top of the phosphorus burning tower, a cooling water tank at the top of the cooling tower, and an intermediate water tank between the gasification water tank and the cooling water tank, the gasification water tank is connected to the intermediate water tank, the cooling water tank is not connected to the intermediate water tank, the liquid level of the intermediate water tank is higher than the liquid level of the cooling water tank, the vent pipe is completely immersed in the liquid surface, and a water outlet pipe with a valve is provided on the side of the intermediate water tank close to the cooling water tank, and the end of the water outlet pipe is located above the cooling water tank, the gasification water tank and the cooling water tank are both connected to the hot water tank through pipelines, and the hot water tank, water-cooling tower, cold water tank and gasification water tank are connected in sequence through pipelines.

[0004] The applicant found the following problems when using the aforementioned phosphorus burning tower: the spray gun seat is usually not equipped with a water cooling jacket due to its special shape and the convenience of replacing the spray gun. At the same time, since this is where yellow phosphorus burns, the temperature is very high; the spray gun seat is easily damaged, resulting in a short service life of the phosphorus burning tower. Summary of the invention

[0005] In order to solve the above problems, the embodiment of the utility model provides a phosphorus burning tower, which sprays water to cool the spray gun seat and prolongs its service life. The technical solution is as follows:

[0006] The utility model embodiment provides a phosphorus burning tower, comprising a first water cooling device, a vertically arranged tower body 1, a cold water tank 2 at the top of the tower body 1, a spray gun seat 3 at the lower part of the tower body 1 and a spray gun 4 on the spray gun seat 3, wherein the cold water tank 2 is connected to the first water cooling device to form a water cooling circulation system, the spray gun seat 3 is arranged obliquely outward from bottom to top and is provided with an oxygen inlet; the spray gun 4 is provided with a yellow phosphorus inlet, a compressed air inlet and a flushing port 5; the phosphorus burning tower also includes a second water cooling device, a water receiving tank 6, a flushing water pipe 7, a spray pipe and a plurality of nozzles 8 on the spray pipe, the water receiving tank 6 is arranged on the tower body 1, the spray gun seat 3 is arranged at the receiving tank 6, and the spray gun seat 3 is provided at the receiving tank 6. The nozzle 8 is in the water tank 6 or located just above the water receiving tank 6, and sprays toward the top of the spray gun seat 3; the water inlet of the flushing water pipe 7 is connected to the cold water tank 2; the water outlet of the flushing water pipe 7 is divided into two outputs, one is connected to the flushing port 5 through a pipeline with a third valve, and the other is connected to the spray pipe through a pipeline with a second valve; the water outlet at the bottom of the water receiving tank 6 is connected to the second water cooling device through a pipeline, and the second water cooling device is connected to the spray pipe through a pipeline with a first valve and a pump; the first valve is normally open, the second valve is normally closed and is only opened when the second water cooling device is abnormal, and the third valve is intermittently opened.

[0007] Furthermore, the phosphorus burning tower also includes an overflow pipe 9 ; the overflow pipe 9 is vertically arranged, located beside the tower body 1 , with its upper end connected to the top of the cold water tank 2 , and its lower end located in the water receiving tank 6 .

[0008] Among them, the flushing water pipe 7 in the embodiment of the utility model is arranged vertically, which is located beside the tower body 1, its upper end is connected to the middle or lower part of the cold water tank 2, and its lower end is near the spray gun seat 3 and is connected to the spray pipe and flushing port 5 through a pipeline.

[0009] Specifically, the flushing water pipe 7 in the embodiment of the utility model is a metal pipe and its lower end is connected to the flushing port 5 through a hose, and the height of the tower body 1 is greater than 15m.

[0010] The spray pipe in the embodiment of the utility model is located above the spray gun seat 3 ; the spray head 8 is vertically arranged, which is arranged on the lower side of the spray pipe and is located adjacent to and above the spray gun seat 3 .

[0011] Specifically, the spray pipe in the embodiment of the utility model is horizontally arranged, and is an arc shape matching the tower body 1. One end of the spray pipe is connected to the second water cooling device through a pipeline with a first valve, and the other end of the spray pipe is connected to the lower end of the flushing water pipe 7 through a pipeline with a second valve.

[0012] More specifically, the spray head 8 in the embodiment of the present invention is located adjacent to and above the top of the outer end of the spray gun holder 3, and a plurality of spray heads 8 are evenly distributed along the spray pipe.

[0013] Furthermore, the water replenishment port of the first water cooling device in the embodiment of the utility model is connected to the desalted water supply device through a pipeline, and the water replenishment port of the second water cooling device is connected to the tap water pipe through a pipeline.

[0014] Preferably, the second valve and the third valve in the embodiment of the utility model are arranged adjacent to each other.

[0015] The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

[0016] (1) The nozzle can continuously cool the spray gun holder to ensure the service life of the spray gun holder.

[0017] (2) When the second water cooling device fails (such as power outage), the cold water tank can be used as an emergency water supply for the nozzles without the need for a pump.

[0018] (3) The water in the cold water tank is desalted water, which has a higher water pressure than the flushing port and a low temperature. It is suitable as flushing water and does not require a water pump.

[0019] (4) The overflow pipe can prevent the cold water tank from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a principle block diagram of the phosphorus burning tower in the embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a phosphorus burning tower in an embodiment of the utility model.

[0022] In the figure: 1 tower body, 2 cold water tank, 3 spray gun holder, 4 spray gun, 5 flushing port, 6 water tank, 7 flushing water pipe, 8 nozzle, 9 overflow pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0024] See also Figure 1-2The embodiment of the utility model provides a phosphorus burning tower, including a first water cooling device, a second water cooling device, a flushing water pipe 7, an overflow pipe 9, a vertically arranged tower body 1, a cold water tank 2 at the top of the tower body 1, a spray gun seat 3 at the bottom of the tower body 1, a spray gun 4 on the spray gun seat 3, a water receiving tank 6 on the tower body 1, a spray pipe and multiple nozzles 8 on the spray pipe, etc. A water cooling jacket is provided outside the tower body 1 (the tower body 1 is not provided with a water cooling jacket at the spray gun seat 3 due to the complex structure), and the water cooling jacket is connected to the first water cooling device through a pipeline to form a water cooling circulation system. The cold water tank 2 is connected to the first water cooling device through a pipeline to form a water cooling circulation system for continuously cooling the water in the cold water tank 2; the cold water tank 2 contains desalted water, which is used to cool the tower body 1 and the ventilation pipe at the top of the tower body 1, and the description of the application number CN202120468717.4 can be referred to. The water replenishment port of the first water cooling device is connected to the desalted water supply device through a pipeline to replenish the desalted water. The temperature of the cold water tank 2 is usually 30-50°C, and the temperature (the temperature will decrease when the water flows through the flushing water pipe 7) is used as the flushing water of the spray gun 4 (it will not freeze, avoid sudden cooling, and is desalted water at the same time). The spray gun seat 3 is arranged obliquely outward from bottom to top, and is provided with an oxygen inlet (side wall), and an inspection hole and an observation hole are provided on its end face. The spray gun 4 is arranged perpendicular to the end face of the spray gun seat 3, and is connected to the spray gun seat 3 through a flange. It is provided with a yellow phosphorus inlet, a compressed air inlet and a flushing port 5, etc., which can be referred to the description of the application number 201720404340.X (the flushing port 5 is provided on the phosphorus delivery pipe, close to the feed flange). The spray gun seat 3 is arranged in the water receiving tank 6 (preferably) or directly above the water receiving tank 6 to ensure that the water sprayed by the nozzle 8 to the spray gun seat 3 can flow into the water receiving tank 6. The nozzle 8 sprays toward the top of the spray gun seat 3. The water inlet of the flushing water pipe 7 is connected to the cold water tank 2; there are at least ten meters between the cold water tank 2 and the spray gun seat 3. The lower end of the flushing water pipe 7 has a large pressure, which is convenient for the spray head 8 to spray and can also achieve flushing. The water outlet of the flushing water pipe 7 is divided into two outputs, one is connected to the flushing port 5 through a pipeline with a third valve, and the other is connected to the spray pipe through a pipeline with a second valve. The water outlet at the bottom of the water receiving tank 6 is connected to the water inlet of the second water cooling device through a pipeline. The water outlet of the second water cooling device is connected to the spray pipe through a pipeline with a first valve and a pump, which is used to cool the water output from the water receiving tank 6, and its water supply port is connected to the tap water pipe through a pipeline. The first valve is normally open to achieve continuous cooling of the spray gun seat 3; the second valve is normally closed and is only opened when the second water cooling device is abnormal; that is, under normal circumstances, the tap water of the second water cooling device is used to cool the spray gun seat 3; when there is a problem with the second water cooling device, the water of the cold water tank 2 is used for emergency spraying. The third valve is opened intermittently (such as when the spray gun 4 is blocked or timed). The overflow pipe 9 prevents the first water cooling device from malfunctioning and causing the cold water tank 2 to overflow. Specifically, the overflow pipe 9 is arranged vertically, located beside the tower body 1, with its upper end connected to the top of the cold water tank 2 and its lower end located in the water receiving tank 6. The overflow pipe 9 is thicker than the flushing water pipe 7.The first water cooling device and the second water cooling device both include a cooling tower and a circulating water tank.

[0025] Among them, see Figure 2 The flushing water pipe 7 in the embodiment of the utility model is arranged vertically, and is located beside the tower body 1. Its upper end is connected to the middle or lower part of the cold water tank 2, and its lower end is near the spray gun seat 3 and is connected to the spray pipe and the flushing port 5 through a pipeline. It is a metal pipe and its lower end is connected to the flushing port 5 through a hose (for easy disassembly and installation of the spray gun 4). The height of the tower body 1 is greater than 15m (the same height as the prior art) to ensure the flushing pressure and the spraying pressure.

[0026] Among them, see Figure 2 , the spray pipe in the embodiment of the utility model is located above the spray gun seat 3. The spray head 8 is arranged vertically, which is arranged on the lower side of the spray pipe, and is located adjacent to the upper side of the spray gun seat 3 (specifically located adjacent to the upper side of the top of the outer end of the spray gun seat 3, the top of the outer end of the spray gun seat 3 is a tip structure, and water flows inward and outward obliquely). Specifically, the spray pipe is arranged horizontally, and it is an arc shape that matches the tower body 1 (coaxially arranged with the tower body 1), one end of which is connected to the second water cooling device through a pipeline with a first valve, and the other end of which is connected to the lower end of the flushing water pipe 7 through a pipeline with a second valve. Multiple spray heads 8 (2-5) are evenly distributed along the spray pipe.

[0027] Preferably, the second valve and the third valve in the embodiment of the utility model are arranged adjacent to each other for centralized control.

[0028] Among them, "first", "second" and "third" in this embodiment are only used for distinction and have no other special meanings.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A phosphorus burning tower, comprising a first water cooling device, a vertically arranged tower body (1), a cold water tank (2) at the top of the tower body (1), a spray gun seat (3) at the lower part of the tower body (1), and a spray gun (4) on the spray gun seat (3), wherein the cold water tank (2) is connected to the first water cooling device to form a water cooling circulation system, the spray gun seat (3) is arranged obliquely outward from bottom to top and is provided with an oxygen inlet; the spray gun (4) is provided with a yellow phosphorus inlet, a compressed air inlet and a flushing port (5); characterized in that The phosphorus burning tower also comprises a second water cooling device, a water receiving trough (6), a flushing water pipe (7), a spray pipe and a plurality of spray heads (8) on the spray pipe, wherein the water receiving trough (6) is arranged on the tower body (1), the spray gun seat (3) is arranged in the water receiving trough (6) or is located directly above the water receiving trough (6), and the spray head (8) sprays towards the top of the spray gun seat (3); the water inlet of the flushing water pipe (7) is connected to the cold water trough (2); the water outlet of the flushing water pipe (7) is divided into two output paths, one path is connected to the flushing port (5) through a pipeline with a third valve, and the other path is connected to the spray pipe through a pipeline with a second valve; the water outlet at the bottom of the water receiving trough (6) is connected to the second water cooling device through a pipeline, and the second water cooling device is connected to the spray pipe through a pipeline with a first valve and a pump; the first valve is normally open, the second valve is normally closed and is opened only when the second water cooling device is abnormal, and the third valve is intermittently opened.

2. The phosphorus burning tower according to claim 1, characterized in that: The phosphorus burning tower also includes an overflow pipe (9); the overflow pipe (9) is arranged vertically and is located beside the tower body (1), with its upper end connected to the top of the cold water tank (2) and its lower end located in the water receiving tank (6).

3. The phosphorus burning tower according to claim 1, characterized in that: The flushing water pipe (7) is arranged vertically and is located beside the tower body (1). Its upper end is connected to the middle or lower part of the cold water tank (2), and its lower end is near the spray gun seat (3) and is connected to the spray pipe and the flushing port (5) through a pipeline.

4. The phosphorus burning tower according to claim 3, characterized in that: The flushing water pipe (7) is a metal pipe and its lower end is connected to the flushing port (5) via a hose. The height of the tower body (1) is greater than 15 m.

5. The phosphorus burning tower according to claim 3, characterized in that: The spray pipe is located above the spray gun seat (3); the spray head (8) is arranged vertically, and is arranged on the lower side of the spray pipe, and is located adjacent to and above the spray gun seat (3).

6. The phosphorus burning tower according to claim 5, characterized in that: The spray pipe is arranged horizontally and is in an arc shape matching the tower body (1). One end of the spray pipe is connected to the second water cooling device via a pipeline with a first valve, and the other end of the spray pipe is connected to the lower end of the flushing water pipe (7) via a pipeline with a second valve.

7. The phosphorus burning tower according to claim 5, characterized in that: The spray head (8) is located adjacent to and above the top of the outer end of the spray gun holder (3), and a plurality of spray heads (8) are evenly distributed along the spray pipe.

8. The phosphorus burning tower according to claim 1, characterized in that: The water supply port of the first water cooling device is connected to the desalted water supply device through a pipeline, and the water supply port of the second water cooling device is connected to the tap water pipe through a pipeline.

9. The phosphorus burning tower according to claim 1, characterized in that: The second valve and the third valve are arranged adjacent to each other.

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