Slag flushing and pressure relief device for yellow phosphorus electric furnace

Abstract

The utility model discloses a yellow phosphorus electric furnace slag flushing pressure relief device which comprises a mounting seat fixedly arranged on a cover plate at the top of a slag flushing trough, an inner sleeve vertically fixed on the mounting seat and an outer sleeve sleeved on the inner sleeve, the mounting seat is annular, and a hole communicated with the inside of the mounting seat and the slag flushing trough is arranged on the cover plate. The top of the inner sleeve and the bottom of the outer sleeve are respectively provided with a communicating hole and a threaded hole for the lock rod to insert. The effect of improving the running safety of the slag sluice and the safety of the pressure relief process is achieved.

Description

Technical Field

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

[0002] Industrial yellow phosphorus is one of the pillar products of my country's chemical industry. It is mainly prepared by the reduction reaction of phosphate rock, silica and white coal inside an electric furnace. Phosphorus slag, ferrophosphorus, coal gas, etc. are several main by-products of yellow phosphorus. Depending on the production process of raw materials, on average, about 10 tons of phosphorus slag will be produced for every ton of yellow phosphorus produced.

[0003] The slag flushing ditch in front of the furnace in the yellow phosphorus workshop connects the slag eye, iron eye and downstream phosphorus slag dehydrator and other facilities of the electric furnace. A large amount of slag flushing water is used in front of the furnace to quench, cool and reduce the temperature of the slag at up to 1200℃ when it comes out of the furnace. In order to save the use of phosphate resources, the industry has begun to try to use tailings for production. In the past, tailings were treated as landfills. Now, tailings are treated by photoelectric beneficiation and heavy medium beneficiation and used for yellow phosphorus production. Generally, the tailings have a small particle size, and the size of the phosphate ore has a great influence on the reaction. The small particle size makes it difficult for the furnace gas to pass through the raw material layer of the electric furnace, and it is easy to form a bridge-shaped cave, resulting in frequent collapse of materials and drastic changes in furnace gas pressure. If the amount of slag flushing water is insufficient when the furnace is discharged or the slag flow is too large in a short time, slag spraying accidents are very likely to occur. Summary of the invention

[0004] The technical problem to be solved by the utility model is that when the furnace gas pressure changes drastically, the slag flushing water and slag in the slag flushing ditch are prone to cause slag spraying accidents.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a yellow phosphorus electric furnace slag flushing and pressure relief device, including a mounting seat fixedly arranged on the top cover plate of the slag flushing groove, an inner sleeve vertically fixed on the mounting seat and an outer sleeve sleeved on the inner sleeve, the mounting seat is annular, and an opening connecting the interior of the mounting seat with the slag flushing groove is provided on the cover plate, and a connecting hole and a threaded hole for inserting a locking rod are respectively provided on the top of the inner sleeve and the bottom of the outer sleeve.

[0006] Preferably, the mounting seat comprises an annular chassis at the bottom and a cylinder coaxially fixed to the middle of the chassis, and the inner sleeve is connected to the cylinder by bolts.

[0007] Preferably, a connecting ring is coaxially fixedly provided on the top of the outer wall of the inner sleeve, and the communicating hole passes through the connecting ring.

[0008] Preferably, an annular bottom wall is coaxially fixed to the bottom end of the outer sleeve, the outer peripheral surface of the bottom wall is fixedly connected to the inner side wall of the outer sleeve, and the inner peripheral surface is in contact with the outer side wall of the inner sleeve.

[0009] Preferably, a connecting ear plate is fixedly connected to the bottom of the annular bottom wall, and the threaded hole is located on the connecting ear plate.

[0010] 1. The utility model provides a slag flushing pressure relief device for a yellow phosphorus electric furnace. The pressure relief device is connected to a cover plate, and a hole is opened on the cover plate to communicate with the pressure relief device. When pressure relief is required, high-temperature water vapor generated by cooling the slag in the slag flushing groove due to the slag flushing water is discharged through the opening on the cover plate and the inner sleeve to avoid slag spraying accidents.

[0011] 2. By inserting an outer sleeve on the top of the inner sleeve and extending the inner sleeve, high-temperature water vapor can be prevented from contacting the structure around the pressure relief device during the upward flow, thereby ensuring the safety of the pressure relief process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model.

[0015] In the figure: 1, cover plate; 2, mounting seat; 3, inner sleeve; 4, outer sleeve; 5, connecting ring; 6, connecting ear plate; 7, locking rod. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 The utility model provides a slag flushing and pressure relief device for a yellow phosphorus electric furnace, comprising a mounting seat 2 fixedly arranged on a cover plate 1 at the top of a slag flushing groove, an inner sleeve 3 vertically fixed on the mounting seat 2, and an outer sleeve 4 sleeved on the inner sleeve 3, the mounting seat 2 is annular, an opening connecting the interior of the mounting seat 2 with the slag flushing groove is provided on the cover plate 1, and a connecting hole and a threaded hole for inserting a locking rod 7 are respectively provided on the top of the inner sleeve 3 and the bottom of the outer sleeve 4.

[0017] Select a position on the cover plate 1 in advance and make a hole, fix the mounting seat 2 at the hole by welding or bolts, then put the inner sleeve 3 on the mounting seat 2, lock the inner sleeve 3 by bolts, and install gaskets on the bolts to prevent the pressure relief device from vibrating and causing the bolts to loosen during the pressure relief process; then put the outer sleeve 4 on the inner sleeve 3, select the height during the fitting process to ensure that the connecting hole and the threaded hole are aligned, and then string the locking rod 7, and lock the outer sleeve 4 on the inner sleeve 3 by the locking rod 7, and the installation of the pressure relief device is completed. When the slag is discharged, the high-temperature water vapor generated by the slag flushing water extracting and cooling the slag is discharged upward through the openings opened on the cover plate 1 and the inner sleeve 3, realizing the pressure relief of the slag flushing groove.

[0018] like Figure 1 and Figure 2 As shown, in order to improve the stability of the pressure relief device installation. The mounting seat 2 includes a circular ring-shaped chassis at the bottom and a cylinder coaxially fixed to the middle of the chassis, and the inner sleeve 3 is connected to the cylinder by bolts. The cylinder is vertically fixed in the middle of the mounting seat 2, and the inner sleeve 3 is sleeved on the cylinder, and it is ensured that the inner wall of the inner sleeve 3 fits the outer wall of the cylinder, and then the inner sleeve 3 is locked by bolts to increase the contact area between the inner sleeve 3 and the mounting seat 2.

[0019] like Figure 1 and Figure 2 As shown. A connecting ring 5 is coaxially fixedly arranged on the top of the outer wall of the inner sleeve 3, and the communicating hole passes through the connecting ring 5. In order to improve the stability of the connection between the outer sleeve 4 and the inner sleeve 3, the outer sleeve 4 is connected to the inner sleeve 3 by fixing the annular connecting ring 5 on the outside of the inner sleeve 3, and the top surface of the connecting ring 5 contacts the bottom surface of the outer sleeve 4, so as to achieve stable support for the outer sleeve 4.

[0020] like Figure 1 and Figure 2 As shown. The bottom end of the outer sleeve 4 is coaxially fixed with an annular bottom wall, the outer peripheral surface of the bottom wall is fixedly connected to the inner side wall of the outer sleeve 4, and the inner peripheral surface is in contact with the outer side wall of the inner sleeve 3. During the pressure relief process, the slag is prevented from falling between the outer sleeve 4 and the inner sleeve 3 after being ejected.

[0021] like Figure 1 and Figure 2 As shown, in order to facilitate the installation of the locking rod 7, a stable connection is achieved between the inner sleeve 3 and the outer sleeve 4. A connecting ear plate 6 is fixedly connected to the bottom of the annular bottom wall, and the threaded hole is located on the connecting ear plate 6.

Claims

1. A yellow phosphorus electric furnace slag flushing and pressure relief device, characterized in that: The utility model comprises a mounting seat (2) fixedly arranged on a cover plate (1) at the top of a slag flushing groove, an inner sleeve (3) vertically fixed on the mounting seat (2), and an outer sleeve (4) sleeved on the inner sleeve (3); the mounting seat (2) is annular, an opening connecting the inside of the mounting seat (2) and the slag flushing groove is provided on the cover plate (1), and a connecting hole and a threaded hole for inserting a locking rod (7) are respectively provided on the top of the inner sleeve (3) and the bottom of the outer sleeve (4).

2. A yellow phosphorus electric furnace slag flushing and pressure relief device as claimed in claim 1, characterized in that: The mounting seat (2) comprises a circular ring-shaped chassis at the bottom and a cylinder coaxially fixed to the middle of the chassis, and the inner sleeve (3) is connected to the cylinder by bolts.

3. A yellow phosphorus electric furnace slag flushing and pressure relief device as claimed in claim 1, characterized in that: A connecting ring (5) is coaxially fixedly disposed on the top of the outer wall of the inner sleeve (3), and the communicating hole passes through the connecting ring (5).

4. A yellow phosphorus electric furnace slag flushing and pressure relief device as claimed in claim 3, characterized in that: An annular bottom wall is coaxially fixed to the bottom end of the outer sleeve (4), the outer peripheral surface of the bottom wall is fixedly connected to the inner side wall of the outer sleeve (4), and the inner peripheral surface is in contact with the outer side wall of the inner sleeve (3).

5. A yellow phosphorus electric furnace slag flushing and pressure relief device as claimed in claim 4, characterized in that: A connecting ear plate (6) is fixedly connected to the bottom of the annular bottom wall, and the threaded hole is located on the connecting ear plate (6).

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