Slag quenching device of yellow phosphorus electric furnace

Abstract

The utility model discloses a yellow phosphorus electric furnace slag quenching device which comprises a slag flushing pool, the slag flushing pool is connected with a liquid inlet of a slag flushing box through a slag flushing pipe, a slag flushing valve and a slag flushing pump are sequentially arranged on the slag flushing pipe, a feeding port in the top of the slag flushing box is connected with a molten slag outlet pipe, and an outlet of the slag flushing box is connected with an inlet of a slag melting pool. A reflux inlet is formed in the bottom of the slag melting tank and connected with an inlet of the slag bin through a reflux pipeline, an outlet of the slag bin is connected with an inlet of the slag flushing tank through a pipeline, and a screen is further arranged in the slag melting tank; according to the utility model, large-particle slag can be intercepted on the upper surface of the screen through the screen and waits for continuous dissolution, and the slag which is dissolved into small particles falls down along screen holes of the screen, so that the phenomenon that the large-particle slag blocks a backflow pipeline, a slag flushing pipe, a valve and a pump can be avoided, and the service life of the slag flushing pipe is prolonged. The abrasion to the valve plate is correspondingly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of yellow phosphorus production, in particular to a yellow phosphorus electric furnace slag quenching device. Background Art

[0002] The slag from the yellow phosphorus electric furnace is quenched with high-pressure water. Due to the high total phosphorus content in the wastewater after quenching, it cannot be discharged and needs to be recycled. The slag flushing water and the phosphorus slag after quenching are both transported by slurry pumps. During the slag quenching process, the phosphorus slag flushes the pipes, valves, and slag quenching pumps, resulting in frequent replacement of impellers, mechanical seals, and other accessories in the slag return pipe ball valve, slag flushing pump, and slag removal pump. Although the slag flushing pump and slag removal pump are designed to be one in operation and one in standby, and valves are installed in front of the pumps, the valves are worn by the phosphorus slag over a long period of time and cannot effectively isolate the slag water. Each time the slag quenching pump is inspected, the yellow phosphorus electric furnace needs to be shut down for more than 4 hours, affecting production efficiency. Summary of the Invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a yellow phosphorus electric furnace slag quenching device to solve the problems raised in the background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a yellow phosphorus electric furnace slag quenching device, including a slag flushing pool, which is connected to the liquid inlet of the slag flushing box through a slag flushing pipe, and the slag flushing pipe is provided with a slag flushing valve and a slag flushing pump in sequence, the top feed port of the slag flushing box is connected to the molten slag outlet pipe, the slag flushing box outlet is connected to the slag pool inlet, and a reflux port is provided at the bottom of the slag pool, and the reflux port is connected to the slag bin inlet through a reflux pipeline, and the slag bin outlet is connected to the slag flushing pool inlet through a pipeline, and a screen is also provided inside the slag pool.

[0005] Preferably, a slag pump is further provided on the reflux pipeline.

[0006] Preferably, a slagging valve is provided on the reflux pipeline between the slagging pump and the reflux port at the bottom of the slagging tank.

[0007] Preferably, the outer surface of the valve plate of the slag removal valve is lined with ceramic, and the ceramic at the bottom is a curved surface structure, and the valve bottom is a corresponding curved surface groove.

[0008] Preferably, the outer surface of the valve plate of the slag flushing valve is lined with ceramic, and the ceramic at the bottom is a curved surface structure, and the valve bottom is a corresponding curved surface groove.

[0009] The beneficial effects of the utility model are as follows: the utility model can retain large particles of slag on the surface of the screen through the screen, waiting for it to continue to dissolve, while the slag that has been dissolved into small particles will fall along the screen holes of the screen, so that the large particles of slag can be prevented from clogging the return pipeline, slag flushing pipe and its valves and pumps, and the wear of the valve plate is correspondingly reduced, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of a yellow phosphorus electric furnace slag quenching device;

[0011] Figure 2 for Figure 1 Schematic diagram of the internal structure of the center slag flushing valve. DETAILED DESCRIPTION

[0012] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0013] like Figure 1-2 As shown, a yellow phosphorus electric furnace slag quenching device includes a slag flushing pool 1, which is connected to the liquid inlet of the slag flushing box 4 through a slag flushing pipe 9, and the slag flushing pipe 9 is provided with a slag flushing valve 2 and a slag flushing pump 3 in sequence. The top feed port of the slag flushing box 4 is connected to the molten slag outlet pipe 10, and the outlet of the slag flushing box 4 is connected to the inlet of the slag pool 5. The bottom of the slag pool 5 is provided with a reflux port, which is connected to the inlet of the slag bin 8 through a reflux pipeline 11, and the outlet of the slag bin 8 is connected to the inlet of the slag flushing pool 1 through a pipeline. A screen 12 is also provided inside the slag pool 5. The screen 12 can make large particles of slag be trapped on the upper surface of the screen 12 and wait for it to continue to dissolve, while the slag that has been dissolved into small particles will fall along the sieve holes of the screen 12, so that the large particles of slag can be prevented from clogging the reflux pipeline 11, the slag flushing pipe 9 and its valves and pumps, and the wear of the valve plate is correspondingly reduced.

[0014] Preferably, a slag pump 7 is further provided on the reflux pipeline 11. The slag pump 7 can quickly pump the mixed solution of some fine slag dissolved in the slagging pool and water back to the slag bin 8, and then send it into the slag flushing pool 1 through the pipeline for recycling.

[0015] Preferably, a slag removal valve 6 is provided on the reflux line 11 between the slag removal pump 7 and the reflux port at the bottom of the slag removal pool 5. The slag removal valve 6 can control the opening and closing of the reflux line 11.

[0016] Preferably, the outer surface of the valve plate of the slag removal valve 6 is lined with ceramic, and the ceramic bottom has a curved surface structure, with the valve bottom having a corresponding curved groove. This curved surface structure and ceramic surface lining can greatly reduce the impact wear of slag on the valve plate, improving its wear resistance and cutting effect.

[0017] Preferably, if Figure 2 As shown, the outer surface of the valve plate of the slag flushing valve 2 is lined with ceramic (ceramic is Figure 2 The black part in the figure), and the ceramic at the bottom is a curved surface structure (i.e. Figure 2The valve plate has two curved surfaces (see Figure 1), with corresponding curved grooves on the bottom. This curved surface structure and ceramic lining significantly reduces the impact wear of slag on the valve plate, improving its wear resistance and shearing performance.

[0018] The working principle of this utility model is as follows:

[0019] The molten slag falls into the slag flushing box 4 from the molten slag outlet pipe 10, the slag flushing valve 2 and the slag flushing pump 3 are opened, and the water in the slag flushing pool 1 enters the slag flushing box 4 through the slag flushing pipe 9, flushing the molten slag into the slag melting pool to carry out the slag melting process; the large particles of slag can be retained on the upper surface of the screen 12 by the screen 12, waiting for it to continue to dissolve, and the slag that has been dissolved into small particles will fall along the sieve holes of the screen 12; after a period of slag melting, the slag removal valve 6 and the slag removal pump 7 are opened, and the slag removal pump 7 can quickly pump the mixed solution of some fine slag and water dissolved in the slag melting pool back to the slag bin 8, and then send it to the slag flushing pool 1 through the pipeline for recycling.

[0020] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A yellow phosphorus electric furnace slag quenching device, comprising a slag flushing pool (1), wherein the slag flushing pool (1) is connected to a liquid inlet of a slag flushing box (4) via a slag flushing pipe (9), a slag flushing valve (2) and a slag flushing pump (3) are sequentially provided on the slag flushing pipe (9), a top feed port of the slag flushing box (4) is connected to a molten slag outlet pipe (10), and an outlet of the slag flushing box (4) is connected to an inlet of a slag molten pool (5), characterized in that: The bottom of the slag-forming pool (5) is provided with a reflux port, which is connected to the inlet of the slag bin (8) via a reflux pipeline (11). The outlet of the slag bin (8) is connected to the inlet of the slag-flushing pool (1) via a pipeline. A screen (12) is also provided inside the slag-forming pool (5).

2. A yellow phosphorus electric furnace slag quenching device according to claim 1, characterized in that: The reflux pipeline (11) is also provided with a slag pump (7).

3. A yellow phosphorus electric furnace slag quenching device according to claim 2, characterized in that: A slagging valve (6) is provided on the reflux pipeline (11) between the slagging pump (7) and the reflux port at the bottom of the slagging tank (5).

4. A yellow phosphorus electric furnace slag quenching device according to claim 3, characterized in that: The outer surface of the valve plate of the slag removal valve (6) is lined with ceramic, and the ceramic at the bottom is a curved surface structure, and the valve bottom is a corresponding curved surface groove.

5. A yellow phosphorus electric furnace slag quenching device according to claim 1, characterized in that: The outer surface of the valve plate of the slag flushing valve (2) is lined with ceramic, and the ceramic at the bottom is a curved surface structure, and the valve bottom is a corresponding curved surface groove.

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