Device for automatically and continuously drying phosphorus sludge and recovering yellow phosphorus

Abstract

The utility model discloses a device for automatically and continuously drying phosphorus sludge and recovering yellow phosphorus, and belongs to the technical field of yellow phosphorus recovery. Comprising a rotary kiln evaporator and a water seal tank, a feeding pipe is arranged at the inlet end of the rotary kiln evaporator, a connecting pipe is arranged at the outlet end of the rotary kiln evaporator, the connecting pipe is connected with the water seal tank, a water pool is arranged on the outer side of the water seal tank, the water seal tank is arranged on the inner wall of the water pool, and the bottom of the water seal tank penetrates through and is suspended. The top of the water seal tank is connected with an air outlet pipe, a heating pipe is arranged in the water pool, the water pool is communicated with the water seal tank, water seal is carried out through the water seal tank, the heating pipe heats water in the water pool, the heated water enters the water seal tank, the temperature of the water seal tank is increased, and gaseous yellow phosphorus can be effectively prevented from being condensed in advance after entering the water seal tank.

Description

Technical Field

[0001] The utility model discloses a device for automatically and continuously drying phosphorus mud to recover yellow phosphorus, belonging to the technical field of yellow phosphorus recovery. Background Art

[0002] In order to improve energy utilization and reduce production costs, the discarded mud phosphorus is usually dried, and the yellow phosphorus in the mud phosphorus is evaporated by drying. The evaporated yellow phosphorus is then passed into a spray tower, and then cooled by the spray tower to condense the gaseous yellow phosphorus into liquid yellow phosphorus, so that yellow phosphorus with a purity of 99.65% can be obtained. The existing recovery device usually includes a rotary kiln evaporator and a connecting pipe. The rotary kiln evaporator is used for drying and evaporation, and the gas is sent to the spray tower from the connecting pipe. In order to prevent external gas from entering the spray tower, a water seal is usually used to improve the sealing performance. For example, the publication number CN218521069U discloses a yellow phosphorus evaporation recovery device in phosphorus mud, including a rotary kiln evaporator and a yellow phosphorus spray absorption tower, and also includes: a water seal component, the water seal component is arranged at the bottom of the yellow phosphorus spray absorption tower; an air guide pipe, the air guide pipe is fixedly connected to the surface of one side of the water seal component. The patent has the following defects when used:

[0003] After the gaseous yellow phosphorus enters the water seal assembly, due to the presence of water in the water seal assembly and the low temperature of the water, the gaseous yellow phosphorus transfers a large amount of heat to the water during the water sealing process, causing the gaseous yellow phosphorus to condense into liquid yellow phosphorus in advance before entering the spray tower, affecting the subsequent spraying effect and reducing the recovery rate. Utility Model Content

[0004] The utility model provides a device for automatically and continuously drying and recovering yellow phosphorus from mud phosphorus. By utilizing a heating pipe to heat the inside of a water seal box, the temperature difference between gaseous yellow phosphorus and water in the water seal box is reduced, and the problem that the gaseous yellow phosphorus transfers a large amount of heat to the water during the water seal due to low water temperature can be solved, so that the gaseous yellow phosphorus condenses into liquid yellow phosphorus in advance before entering the spray tower, thereby affecting the subsequent spraying effect and reducing the recovery rate.

[0005] In order to solve the above problems, the utility model proposes a technical solution as follows: a device for automatically and continuously drying and recovering yellow phosphorus from mud phosphorus comprises: a rotary kiln evaporator and a water seal box, wherein a feed pipe is arranged at the inlet end of the rotary kiln evaporator, a connecting pipe is arranged at the outlet end of the rotary kiln evaporator, the connecting pipe is connected to the water seal box, a water pool is arranged outside the water seal box, the water seal box is placed on the inner wall of the water pool, and the bottom of the water seal box is penetrated and suspended, an air outlet pipe is connected to the top of the water seal box, a heating pipe is arranged in the water pool, and the water pool is connected to the water seal box;

[0006] Furthermore, a heat conducting pipe is arranged on the surface of the heating pipe, and the heat conducting pipe is fixedly arranged at one end of the heating pipe and bent;

[0007] Furthermore, a baffle is provided between the water seal box and the heating pipe, the height of the baffle is less than the height of the water pool, a T-shaped groove is provided on one side of the baffle close to the water seal box, a collection box is provided in the water pool, and a slider inserted in the T-shaped groove is provided on the collection box to form a sliding structure;

[0008] Furthermore, a slope is provided in the water pool, the slope is located below the water seal box, and the front end of the collection box is in contact with the inclined surface at the lower end of the slope;

[0009] Furthermore, the connecting pipe extends into the water seal box, and the end of the connecting pipe is bent downward;

[0010] Furthermore, the air outlet pipe is externally connected to a spray tower.

[0011] Beneficial effects of the utility model:

[0012] 1. Water seal is performed through the water seal box. The heating pipe heats the water in the water pool. The heated water enters the water seal box to increase the temperature of the water seal box, which can effectively prevent the gaseous yellow phosphorus from condensing prematurely after entering the water seal box;

[0013] Second, by pouring the waste slag into the water seal box, air can be prevented from entering when the slag is discharged, thereby improving the recovery effect, and the waste heat of the waste slag can be used to assist in heating the water in the water pool, thereby improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a front view of a device for automatically and continuously drying mud phosphorus to recover yellow phosphorus.

[0015] Figure 2 The utility model is a schematic structural diagram of a cleaning device for automatically and continuously drying mud phosphorus to recover yellow phosphorus.

[0016] Figure 3 The utility model is a schematic structural diagram of a cleaning device for automatically and continuously drying mud phosphorus to recover yellow phosphorus.

[0017] 1. Rotary kiln evaporator; 2. Feed pipe; 3. Connecting pipe; 4. Exhaust pipe; 5. Water seal box; 6. Water pool; 7. Heating pipe; 8. Heat transfer pipe; 9. Partition; 10. T-slot; 11. Collecting box; 12. Slope. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] according to Figure 1-3 As shown: The utility model provides a device for automatically and continuously drying mud phosphorus to recover yellow phosphorus, comprising: a rotary kiln evaporator 1, a water seal box 5, a feed pipe 2 is arranged at the inlet end of the rotary kiln evaporator 1, a connecting pipe 3 is arranged at the outlet end of the rotary kiln evaporator 1, the connecting pipe 3 is connected to the water seal box 5, a water pool 6 is arranged outside the water seal box 5, the water seal box 5 is placed on the inner wall of the water pool 6, and the bottom of the water seal box 5 is penetrated and suspended, an air outlet pipe 4 is connected to the top of the water seal box 5, a heating pipe 7 is arranged in the water pool 6, the water pool 6 is connected to the water seal box 5, the water in the water pool 6 is heated by the heating pipe 7, the heated water enters the water seal box 5, the temperature of the water seal box 5 is increased, and the gaseous yellow phosphorus can be effectively prevented from condensing in advance after entering the water seal box 5;

[0021] In the present invention, a heat conducting pipe 8 is arranged on the surface of the heating pipe 7, and the heat conducting pipe 8 is fixedly arranged at one end of the heating pipe 7 and bent, so that the heat generated by the heating pipe 7 quickly enters the water pool 6, so that the water pool 6 is heated quickly;

[0022] In the utility model, a baffle is provided between the water seal box 5 and the heating tube 7, the height of the baffle is less than the height of the water pool 6, a T-shaped slot 10 is provided on the side of the baffle close to the water seal box 5, a collecting box 11 is provided in the water pool 6, and a slider inserted in the T-shaped slot 10 is provided on the collecting box 11 to form a sliding structure, and the discharged waste residue is collected by the collecting box 11, and the baffle prevents the waste residue from entering the vicinity of the heating tube 7;

[0023] In the utility model, a slope 12 is provided in the water pool 6, the slope 12 is located below the water seal box 5, and the front end of the collection box 11 is in contact with the inclined surface of the lower end of the slope 12, and the waste residue is guided into the collection box 11 through the slope 12;

[0024] In the present invention, the connecting pipe 3 extends into the water seal box 5, and the end of the connecting pipe 3 is bent downward so that the end of the connecting pipe 3 can be submerged in water to achieve a water seal;

[0025] In the utility model, the air outlet pipe 4 is externally connected to a spray tower.

[0026] The principle of the utility model is as follows: when in use, the mud phosphorus is put into the feeding pipe and enters into the rotary kiln evaporator 1 for drying and evaporation, the tail gas and waste residue enter into the connecting pipe 3 at the same time and are discharged into the water seal box 5, the water in the water pool 6 is heated by the heating pipe 7 and covers the outlet of the connecting pipe 3, the waste residue and gaseous yellow phosphorus are discharged into the water seal box 5, the waste residue falls into the water pool 6 and gathers in the collecting box 11, and due to the high water temperature, the gaseous yellow phosphorus can be effectively prevented from condensing in advance, the gaseous yellow phosphorus enters into the spray tower through the outlet pipe 4, completes the condensation, and realizes continuous recovery.

[0027] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A device for automatically and continuously drying phosphorus mud to recover yellow phosphorus, comprising a rotary kiln evaporator (1) and a water seal box (5), wherein the inlet end of the rotary kiln evaporator (1) is provided with a feed pipe (2), and the outlet end of the rotary kiln evaporator (1) is provided with a connecting pipe (3), and the connecting pipe (3) is connected to the water seal box (5), characterized in that: A water pool (6) is arranged outside the water seal box (5), the water seal box (5) is placed on the inner wall of the water pool (6), and the bottom of the water seal box (5) is penetrated and suspended in the air, the top of the water seal box (5) is connected to an air outlet pipe (4), a heating pipe (7) is arranged in the water pool (6), and the water pool (6) is connected to the water seal box (5).

2. The device for automatically and continuously drying and recovering yellow phosphorus from phosphorus mud according to claim 1, characterized in that: A heat conducting pipe (8) is arranged on the surface of the heating pipe (7), and the heat conducting pipe (8) is fixedly arranged at one end of the heating pipe (7) and bent.

3. The device for automatically and continuously drying and recovering yellow phosphorus from phosphorus mud according to claim 1, characterized in that: A baffle is provided between the water seal box (5) and the heating tube (7), the height of the baffle being less than the height of the water pool (6), a T-shaped groove (10) being provided on one side of the baffle close to the water seal box (5), a collection box (11) being provided in the water pool (6), and a slider inserted into the T-shaped groove (10) being provided on the collection box (11), thereby forming a sliding structure.

4. The device for automatically and continuously drying and recovering yellow phosphorus from phosphorus mud according to claim 3, characterized in that: A slope (12) is provided in the water pool (6), the slope (12) is located below the water seal box (5), and the front end of the collection box (11) is in contact with the inclined surface at the lower end of the slope (12).

5. The device for automatically and continuously drying and recovering yellow phosphorus from phosphorus mud according to claim 1, characterized in that: The connecting pipe (3) extends into the water seal box (5), and the end of the connecting pipe (3) is bent downward.

6. The device for automatically and continuously drying and recovering yellow phosphorus from phosphorus mud according to claim 1, characterized in that: The air outlet pipe (4) is externally connected to a spray tower.

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