Yellow phosphorus storage device with emergency function

Abstract

The utility model discloses a yellow phosphorus storage device with an emergency function, and belongs to the technical field of phosphorus chemical industry. Comprising two phosphorus storage tanks, and a lower heating coil and an upper heating coil are arranged on the lower portion and the upper portion in each phosphorus storage tank respectively; one phosphorus storage tank contains water and yellow phosphorus to serve as a working tank, and the other phosphorus storage tank only contains water to serve as an emergency tank; the lower parts of the two phosphorus storage tanks are connected through a pipeline with a first delivery pump, the lower parts of the two phosphorus storage tanks are respectively output through a pipeline with a second delivery pump, the upper parts of the phosphorus storage tanks are connected with an alkali liquor supply structure and a clear water supply structure through pipelines, and a yellow phosphorus feed port is formed in the lower part of the working tank; when the working tank is about to be full, yellow phosphorus in the working tank is conveyed to the emergency tank through the first conveying pump. Two phosphorus storage tanks are arranged, one phosphorus storage tank is used as a working tank, the other phosphorus storage tank is used as an emergency tank, and water with proper temperature is always prepared in the emergency tank so as to receive yellow phosphorus output by the working tank at any time.

Description

Technical Field

[0001] The utility model belongs to the technical field of phosphorus chemical industry, and particularly relates to a yellow phosphorus storage device with emergency function. Background Art

[0002] Phosphoric acid and phosphorus pentoxide both use molten yellow phosphorus as raw materials, which react with dried air in a phosphorus burning tower to generate phosphorus pentoxide flue gas, which is then cooled and settled to produce phosphorus pentoxide. Phosphorus pentoxide flue gas reacts with water to produce phosphoric acid.

[0003] For example, the patent with application number CN201420317763.4 discloses a phosphorus pentoxide production system, which includes a phosphorus storage tank, a high-level tank connected to the phosphorus storage tank, and a plurality of combustion furnaces arranged side by side and connected to the high-level tank through a phosphorus delivery pipeline, wherein the high-level tank and the phosphorus delivery pipeline are provided with a thermal insulation jacket, and the combustion furnace includes a combustion chamber and a sedimentation chamber; the system also includes a heat energy recovery structure composed of a hot water storage tank and at least one hot water bag arranged on the combustion chamber, the hot water bags are connected in series in sequence and form a first circulation loop with the hot water storage tank through a pipeline, and the thermal insulation jacket and the hot water storage tank form a second circulation loop through a pipeline.

[0004] In the prior art, since yellow phosphorus has a low ignition point, spontaneous combustion will occur as long as liquid yellow phosphorus is exposed to air. Therefore, the storage of yellow phosphorus must be sealed with water. In the prior art, molten yellow phosphorus is stored in a phosphorus storage tank, and a lower heating coil and an upper heating coil are respectively provided at the lower and upper parts of the phosphorus storage tank. Water and yellow phosphorus are contained in the phosphorus storage tank, with the yellow phosphorus at the bottom and the water at the top to form a liquid seal.

[0005] When the applicant used the existing technology, he found the following problem: the commercially available yellow phosphorus is transported by tank trucks (with insulation function), and the volume of yellow phosphorus in the tank trucks may exceed the remaining available volume of the phosphorus storage tank, requiring the tank trucks to stop and continue heating, which is usually not possible. Summary of the invention

[0006] In order to solve the above problems, the embodiment of the utility model provides a yellow phosphorus storage device with emergency function, which is provided with two phosphorus storage tanks, one as a working tank and the other as an emergency tank. The emergency tank is always equipped with water of suitable temperature to receive the yellow phosphorus output from the working tank at any time. The technical solution is as follows:

[0007] The embodiment of the utility model provides a yellow phosphorus storage device with emergency function, comprising a phosphorus storage tank 1, wherein a lower heating coil 4 and an upper heating coil 5 are respectively arranged at the lower part and the upper part of the phosphorus storage tank 1; the number of the phosphorus storage tanks 1 is two, one phosphorus storage tank 1 contains water 6 and yellow phosphorus 7 to serve as a working tank 2, and the other phosphorus storage tank 1 contains only water 6 to serve as an emergency tank 3; the lower parts of the two phosphorus storage tanks 1 are connected by a pipeline with a first delivery pump 8 and the lower parts thereof are respectively output through a pipeline with a second delivery pump 9, the upper part of the phosphorus storage tank 1 is connected to an alkali solution supply structure and a clean water supply structure through a pipeline, and a yellow phosphorus feed port is arranged at the lower part of the working tank 2; when the working tank 2 is almost full, the yellow phosphorus 7 in the working tank 2 is delivered to the emergency tank 3 by the first delivery pump 8.

[0008] Among them, two phosphorus storage tanks 1 in the embodiment of the utility model are arranged side by side, and the phosphorus storage tanks 1 are underground tanks and have walls on the sides of the tanks.

[0009] Specifically, the phosphorus storage tank 1 in the embodiment of the utility model is a rectangular concrete tank, the top of which is provided with a metal tank cover, the tank cover is detachable, and an inspection port and a sampling port are provided on the tank cover.

[0010] Wherein, the first delivery pump 8 and the second delivery pump 9 in the embodiment of the utility model are both arranged on the tank cover.

[0011] Furthermore, a lower thermometer and a lower liquid level gauge 10 are provided in the lower part of the phosphorus storage tank 1 in the embodiment of the utility model, and an upper thermometer, an upper liquid level gauge 11 and a pH meter are provided in the upper part thereof; the lower thermometer, the lower liquid level gauge 10, the upper thermometer, the upper liquid level gauge 11 and the pH meter are all fixed on the tank cover and pass upward; in the working tank 2, the lower heating coil 4, the lower thermometer and the lower liquid level gauge 10 are located in the yellow phosphorus 7, and the upper heating coil 5, the upper thermometer, the upper liquid level gauge 11 and the pH meter are located in the water 6; in the emergency tank 3, the lower heating coil 4, the lower thermometer and the lower liquid level gauge 10 are located in the water 6, and the upper heating coil 5, the upper thermometer, the upper liquid level gauge 11 and the pH meter are suspended in the air.

[0012] Among them, the air inlets of the lower heating coil 4 and the upper heating coil 5 in the embodiment of the utility model are connected to the steam outlet of the steam drum of the phosphorus burning tower through pipelines, and their condensed water outlets are connected to the condensing water tank through pipelines; the condensing water tank is connected to the alkali solution supply structure, the clean water supply structure and the cooling water tower through pipelines, and the cooling water tower is connected to the cooling water inlet of the cooling jacket of the phosphorus burning tower through pipelines.

[0013] The technical solution provided by the embodiment of the utility model has the following beneficial effects: the embodiment of the utility model provides a yellow phosphorus storage device with emergency function, two phosphorus storage tanks are set, one is used as a working tank, and the other is used as an emergency tank. The yellow phosphorus in the emergency tank is used first, and water with suitable temperature is always prepared in the emergency tank to receive the yellow phosphorus output from the working tank at any time. The tank truck can continuously send yellow phosphorus to the working tank and leave after adding. The emergency tank has the same function as the working tank and can liquid-seal the yellow phosphorus. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a principle block diagram of a yellow phosphorus storage device with emergency function in an embodiment of the utility model;

[0015] Figure 2 It is a schematic structural diagram of a yellow phosphorus storage device with emergency function in an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the utilization of steam and condensed water.

[0017] In the figure: 1 phosphorus storage tank, 2 working tank, 3 emergency tank, 4 lower heating coil, 5 upper heating coil, 6 water, 7 yellow phosphorus, 8 first delivery pump, 9 second delivery pump, 10 lower liquid level gauge, 11 upper liquid level gauge. DETAILED DESCRIPTION

[0018] 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.

[0019] Example 1

[0020] See also Figure 1-2Embodiment 1 provides a yellow phosphorus storage device with emergency function, including two phosphorus storage tanks 1, which are arranged side by side. The upper part of the phosphorus storage tank 1 is connected to the alkali solution supply structure and the clean water supply structure through pipelines to input alkali solution (specifically sodium hydroxide solution, so that water 6 is close to neutral) and replenish water. One phosphorus storage tank 1 contains water 6 (in the upper part of the working tank 2) and yellow phosphorus 7 (in the lower part of the working tank 2) as the working tank 2, and the other phosphorus storage tank 1 only contains water 6 (in the lower part of the emergency tank 3) as the emergency tank 3. The working tank 2 is used to store yellow phosphorus, and the emergency tank 3 is used to send the yellow phosphorus 7 in the working tank 2 to the emergency tank 3 when the working tank 2 is almost full. The lower heating coil 4 and the upper heating coil 5 are respectively provided in the lower and upper parts of the phosphorus storage tank 1; in the working tank 2, the lower heating coil 4 and the upper heating coil 5 are respectively used to heat the yellow phosphorus 7 and water 6; in the emergency tank 3, the lower heating coil 4 is used to heat the water 6, and the upper heating coil 5 does not work. The lower part of the working tank 2 is provided with a yellow phosphorus feed port to input yellow phosphorus from the tank truck. The yellow phosphorus feed port is specifically a feed pipe (with a heat-insulating jacket) that runs through the tank cover downward. The lower parts of the two phosphorus storage tanks 1 are connected by a pipeline with a first delivery pump 8 (which can be arranged on the tank cover of the working tank 2) and the lower parts thereof are respectively output through pipelines with a second delivery pump 9 (to a sedimentation tank or a phosphorus burning tower, etc.). The first delivery pump 8 and the second delivery pump 9 are both arranged on the tank cover at the top of the phosphorus storage tank 1. When the working tank 2 is about to be filled, the yellow phosphorus 7 in the working tank 2 is delivered to the emergency tank 3 by the first delivery pump 8, and the upper heating coil 5 in the emergency tank 3 starts to work.

[0021] The phosphorus storage tank 1 in the embodiment of the utility model is an underground tank, with a wall (height of 0.3-1.0m) on the side of the tank, which is specifically a rectangular concrete tank, with a metal tank cover (specifically formed by splicing a plurality of rectangular plates) on the top, which is detachable for cleaning mud phosphorus, and has an inspection port and a sampling port on the tank cover. The inspection port and the sampling port are specifically manholes of suitable size.

[0022] Further, see Figure 2 In the embodiment of the utility model, the phosphorus storage tank 1 is provided with a lower thermometer and a lower liquid level gauge 10 in the lower part, and an upper thermometer, an upper liquid level gauge 11 and a pH meter in the upper part. The lower thermometer, the lower liquid level gauge 10, the upper thermometer, the upper liquid level gauge 11 and the pH meter are all fixed on the tank cover and pass upward. In the working tank 2, the lower heating coil 4, the lower thermometer and the lower liquid level gauge 10 are located in the yellow phosphorus 7, and the upper heating coil 5, the upper thermometer, the upper liquid level gauge 11 and the pH meter are located in the water 6. In the emergency tank 3, the lower heating coil 4, the lower thermometer and the lower liquid level gauge 10 are located in the water 6, and the upper heating coil 5, the upper thermometer, the upper liquid level gauge 11 and the pH meter are suspended in the air.

[0023] Example 2

[0024] See also Figure 3, Embodiment 2 provides a yellow phosphorus storage device with emergency function, and its structure is basically the same as that of Embodiment 1, except that: the air inlets of the lower heating coil 4 and the upper heating coil 5 in this embodiment are connected to the steam outlet of the drum of the phosphorus burning tower through pipelines to input steam, and their condensed water outlets are connected to the condensed water tank through pipelines to output condensed water. The drum is located above the phosphorus burning tower, and is connected to the hot water outlet of the cooling jacket of the phosphorus burning tower through pipelines. Its structure can be found in the description of application number CN201420318761.7. The condensed water tank is used to collect condensed water at a higher temperature, and is connected to the alkali solution supply structure (hot water can accelerate the dissolution of alkali), the clean water supply structure (can provide clean clean water) and the cooling water tower (can provide clean clean water) through pipelines. The cooling water tower is connected to the cooling water inlet of the cooling jacket of the phosphorus burning tower through pipelines to provide cooling water.

[0025] Example 3

[0026] Embodiment 3 provides a yellow phosphorus storage device with emergency function, and its structure is basically the same as that of Embodiment 1, except that: the total volume of the working tank 2 in this embodiment is 50 cubic meters, the effective volume is 30 cubic meters, and the maximum storage capacity is 45 tons. The total volume of the emergency tank 3 is 30 cubic meters, the effective volume is 20 cubic meters, and the maximum storage capacity is 30 tons.

[0027] The "first" and "second" in this embodiment are only used for distinction and have no other special meaning. Pumps, valves or flow meters etc. are arranged on the pipelines between the structures as required.

[0028] 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 yellow phosphorus storage device with emergency function, comprising a phosphorus storage tank (1), wherein a lower heating coil (4) and an upper heating coil (5) are respectively arranged at the lower part and the upper part of the phosphorus storage tank (1); characterized in that: The number of the phosphorus storage tanks (1) is two, one of which contains water (6) and yellow phosphorus (7) to serve as a working tank (2), and the other of which contains only water (6) to serve as an emergency tank (3); the lower parts of the two phosphorus storage tanks (1) are connected via a pipeline with a first delivery pump (8) and the lower parts thereof are respectively output via pipelines with a second delivery pump (9); the upper parts of the phosphorus storage tanks (1) are connected to an alkali solution supply structure and a clean water supply structure via pipelines, and a yellow phosphorus feed port is provided at the lower part of the working tank (2); when the working tank (2) is almost full, the yellow phosphorus (7) in the working tank (2) is delivered to the emergency tank (3) via the first delivery pump (8).

2. The yellow phosphorus storage device with emergency function according to claim 1, characterized in that: Two phosphorus storage tanks (1) are arranged side by side. The phosphorus storage tanks (1) are underground tanks and are provided with walls on the sides of the tanks.

3. The yellow phosphorus storage device with emergency function according to claim 1, characterized in that: The phosphorus storage tank (1) is a rectangular concrete tank, the top of which is provided with a metal tank cover, the tank cover is detachable, and an inspection port and a sampling port are provided on the tank cover.

4. The yellow phosphorus storage device with emergency function according to claim 2, characterized in that: The first delivery pump (8) and the second delivery pump (9) are both arranged on the tank cover.

5. The yellow phosphorus storage device with emergency function according to claim 2, characterized in that: The phosphorus storage tank (1) has a lower thermometer and a lower liquid level gauge (10) at its lower interior, and an upper thermometer, an upper liquid level gauge (11) and a pH meter at its upper interior; the lower thermometer, the lower liquid level gauge (10), the upper thermometer, the upper liquid level gauge (11) and the pH meter are all fixed on the tank cover and extend upward; In the working tank (2), the lower heating coil (4), the lower thermometer and the lower liquid level gauge (10) are located in the yellow phosphorus (7), and the upper heating coil (5), the upper thermometer, the upper liquid level gauge (11) and the pH meter are located in the water (6); in the emergency tank (3), the lower heating coil (4), the lower thermometer and the lower liquid level gauge (10) are located in the water (6), and the upper heating coil (5), the upper thermometer, the upper liquid level gauge (11) and the pH meter are suspended in the air.

6. The yellow phosphorus storage device with emergency function according to claim 1, characterized in that: The air inlets of the lower heating coil (4) and the upper heating coil (5) are connected to the steam outlet of the steam drum of the phosphorus burning tower through pipelines, and their condensed water outlets are connected to the condensed water tank through pipelines; the condensed water tank is connected to the alkali solution supply structure, the clean water supply structure and the cooling water tower through pipelines, and the cooling water tower is connected to the cooling water inlet of the cooling jacket of the phosphorus burning tower through pipelines.

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