An automatic pressure relief system for unclogging and dust collection in titanium sponge production

Abstract

The present invention discloses a pressure relief system for automatic dredging and dust collection in titanium sponge production. A pressure relief system for automatic dredging and dust collection in titanium sponge production. The exhaust port of an automatic pressure relief valve for a titanium sponge production reactor is communicated with the air inlet passage of a negative pressure dust collection box through a pressure relief pipeline. A horizontal cleaning rod is arranged in the pressure relief pipeline on one side corresponding to the exhaust port of the automatic pressure relief valve. A strip-shaped hole is arranged on one side of the pressure relief pipeline parallel to the horizontal cleaning rod. The horizontal cleaning rod is connected with the moving part of a cylinder through a connecting piece. The cylinder is fixed on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. A plurality of communicating cavities are formed in the negative pressure dust collection box through a plurality of partitions. A plurality of cleaning ports are arranged at the top and bottom of the negative pressure dust collection box. The cleaning ports are sealed by rubber plugs. Advantages of the present invention: Avoid blockage at small-diameter positions; Reduce the possibility of flash explosion; Facilitate cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium sponge production, and particularly relates to a pressure relief system for automatic dredging and dust collection in titanium sponge production. Background Art

[0002] During the reduction process of the reactor for producing titanium sponge, it is under a slightly positive pressure protected by argon. When the pressure in the reactor is too high during the reduction process, the reactor needs to be depressurized. There are two reasons for the pressure increase: 1. The pressure of the reactor increases with the production of titanium tetrachloride; 2. When discharging magnesium chloride in the upper row, argon needs to be filled to discharge magnesium chloride. The depressurized flue gas will be mixed with dust of low-valent chlorides that have not fully reacted.

[0003] Currently, some titanium sponge production manufacturers connect the depressurized soot through the discharge pipeline and lead it outside the workshop for treatment. In this way, there is a relatively serious problem of pipeline blockage. When cleaning the pipeline blockage, the influx of air may cause flash explosion of low-valent chlorides, which is somewhat dangerous to the cleaning personnel, pipelines, and equipment. Summary of the Invention

[0004] The present invention provides a pressure relief system for automatic dredging and dust collection in titanium sponge production.

[0005] The solution of the present invention is as follows:

[0006] A pressure relief system for automatic dredging and dust collection in titanium sponge production,

[0007] The exhaust port of the automatic pressure relief valve for the titanium sponge production reactor is communicated with the air inlet channel of the negative pressure dust collection box through a pressure relief pipeline. A horizontal cleaning rod is arranged in the pressure relief pipeline on one side corresponding to the exhaust port of the automatic pressure relief valve. A strip-shaped hole is arranged on one side of the pressure relief pipeline parallel to the horizontal cleaning rod. The horizontal cleaning rod is connected with the moving part of a cylinder through a connecting piece. The cylinder is fixed on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. A plurality of communicating cavities are formed in the negative pressure dust collection box through a plurality of partition plates. A plurality of cleaning ports are arranged at the top and bottom of the negative pressure dust collection box, and the cleaning ports are closed by rubber plugs.

[0008] As a preferred technical solution, the cylinder is located on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. One end of the connecting piece extends into the pressure relief pipeline from the strip-shaped hole and is connected with the horizontal cleaning rod, and the other end of the connecting piece is connected with the moving part of the cylinder.

[0009] As a preferred technical solution, the automatic pressure relief valve is interlocked with the reactor.

[0010] As a preferred technical solution, the automatic pressure relief valve and the horizontal cleaning rod have an interlock.

[0011] The present invention also discloses a method for using a pressure relief system for automatic dredging and dust collection in titanium sponge production, including the following steps:

[0012] Pressure relief is controlled by an automatic pressure relief valve, which is interlocked with the pressure in the reactor. When the reactor pressure reaches 15 - 25 kPa, the pressure relief procedure is started, and when the pressure is lower than 1 - 10 kPa after pressure relief, it automatically closes;

[0013] The outlet of the automatic pressure relief valve corresponds to a horizontal cleaning rod, which dredges the pressure relief pipeline during pressure relief. The horizontal cleaning rod is controlled by a cylinder to perform dredging actions intermittently;

[0014] The pressure relief flue gas is sucked into the negative pressure dust collection box by negative pressure through the pressure relief pipeline and collides with the partition in the negative pressure dust collection box to decelerate and fall.

[0015] As a preferred technical solution, the horizontal cleaning rod acts once every 3 - 15 seconds.

[0016] Due to the adoption of the above technical solution, a pressure relief system for automatic dredging and dust collection in titanium sponge production, the exhaust port of the automatic pressure relief valve for the titanium sponge production reactor is communicated with the air inlet channel of the negative pressure dust collection box through the pressure relief pipeline. A horizontal cleaning rod is arranged in the pressure relief pipeline on one side corresponding to the exhaust port of the automatic pressure relief valve. There are strip-shaped holes on one side of the pressure relief pipeline parallel to the horizontal cleaning rod. The horizontal cleaning rod is connected to the moving part of the cylinder through a connecting piece. The cylinder is fixed on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped holes. The negative pressure dust collection box is formed with several communicating cavities through several partitions. There are several cleaning ports at the top and bottom of the negative pressure dust collection box, and the cleaning ports are closed by rubber plugs.

[0017] Advantages of the present invention:

[0018] 1. The horizontal cleaning rod and the automatic pressure relief valve are interlocked for automatic control of pressure relief, avoiding blockage at small pipe diameters;

[0019] 2. Dust collection is carried out before entering the tail gas pipeline to reduce the entry of low-valence substances into the tail gas pipeline and avoid blockage;

[0020] 3. A semi-open dust collection pipe is adopted at the horizontal cleaning rod. While absorbing the flue gas, air is inhaled to oxidize the low-valence chlorides, reducing the possibility of flash explosion;

[0021] 4. The dust collection box is closed with a rubber plug to avoid damage to the equipment during a serious flash explosion and facilitate cleaning. Description of the Drawings

[0022] Figure 1 is the process flow chart of the present invention;

[0023] 1 - automatic pressure relief valve; 2 - horizontal cleaning rod; 3 - cylinder; 4 - rubber plug; 5 - negative pressure dust collection box. Detailed implementation mode

[0024] To make up for the above deficiencies, the present invention provides a pressure relief system for automatic dredging and dust collection in titanium sponge production to solve the problems in the above background technology.

[0025] A pressure relief system for automatic dredging and dust collection in titanium sponge production,

[0026] The exhaust port of the automatic pressure relief valve for the titanium sponge production reactor is communicated with the air inlet duct of the negative pressure dust collection box through a pressure relief pipeline. A horizontal cleaning rod is arranged in the pressure relief pipeline on one side corresponding to the exhaust port of the automatic pressure relief valve. A strip-shaped hole is arranged on one side of the pressure relief pipeline parallel to the horizontal cleaning rod. The horizontal cleaning rod is connected with the moving part of the cylinder through a connecting piece. The cylinder is fixed on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. A plurality of communicating cavities are formed in the negative pressure dust collection box through a plurality of partition plates. A plurality of cleaning ports are arranged at the top and bottom of the negative pressure dust collection box, and the cleaning ports are sealed by rubber plugs.

[0027] The cylinder is located on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. One end of the connecting piece extends into the pressure relief pipeline from the strip-shaped hole and is connected with the horizontal cleaning rod, and the other end of the connecting piece is connected with the moving part of the cylinder.

[0028] The automatic pressure relief valve is interlocked with the reactor.

[0029] The automatic pressure relief valve and the horizontal cleaning rod have an interlock to avoid damage to the valve core due to mutual conflict.

[0030] The present invention also discloses a method for using a pressure relief system for automatic dredging and dust collection in titanium sponge production, including the following steps:

[0031] The pressure relief is controlled by an automatic pressure relief valve. The automatic pressure relief valve is interlocked with the pressure in the reactor. When the reactor pressure reaches 15 - 25 kPa, the pressure relief program is started, and when the pressure is lower than 1 - 10 kPa after pressure relief, it is automatically closed;

[0032] The horizontal cleaning rod corresponds to the outlet of the automatic pressure relief valve. When relieving pressure, the pressure relief pipeline is dredged, and the horizontal cleaning rod is controlled by the cylinder to perform intermittent dredging actions; when relieving pressure, the pressure relief valve pipeline is dredged to avoid blockage. A strip-shaped hole is opened on the side of the horizontal pipeline of the cleaning rod for installation, inspection, cleaning and maintenance, and the horizontal cleaning rod is controlled by the cylinder to perform intermittent dredging actions;

[0033] The pressure-relieved flue gas is sucked into the negative-pressure dust collection box through the pressure-relief pipeline and collides with the partition plate in the negative-pressure dust collection box to decelerate and fall. At the same time, air is sucked in to fully oxidize the low-valued substances in the dust collection box to reduce the possibility of flash explosion. The cleaning port of the dust collection box is sealed with a rubber plug, which can be pushed out under pressure in time during flash explosion to release the pressure and avoid damage to the dust collection box.

[0034] The horizontal cleaning rod operates once every 3 to 15 seconds.

[0035] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0036] Embodiment 1

[0037] The exhaust port of the automatic pressure-relief valve 1 for the sponge titanium production reactor is communicated with the air inlet channel of the negative-pressure dust collection box 5 through a pressure-relief pipeline. A horizontal cleaning rod 2 is arranged in the pressure-relief pipeline on one side corresponding to the exhaust port of the automatic pressure-relief valve 1. A strip-shaped hole is arranged on one side of the pressure-relief pipeline parallel to the horizontal cleaning rod 2. The horizontal cleaning rod 2 is connected to the moving part of the cylinder 3 through a connecting piece. The cylinder 3 is fixed on the outer wall surface of the pressure-relief pipeline downstream of the strip-shaped hole. A plurality of communicating cavities are formed in the negative-pressure dust collection box 5 through a plurality of partition plates. A plurality of cleaning ports are arranged at the top and bottom of the negative-pressure dust collection box 5, and the cleaning ports are sealed by rubber plugs 4.

[0038] The cylinder 3 is located on the outer wall surface of the pressure-relief pipeline downstream of the strip-shaped hole. One end of the connecting piece extends into the pressure-relief pipeline from the strip-shaped hole and is connected to the horizontal cleaning rod 2, and the other end of the connecting piece is connected to the moving part of the cylinder 3.

[0039] The automatic pressure-relief valve 1 is interlocked with the reactor.

[0040] The automatic pressure-relief valve 1 and the horizontal cleaning rod 2 have interlock.

[0041] A method for using an automatic dredging and dust collection pressure-relief system for sponge titanium production includes the following steps:

[0042] The pressure relief is controlled by an automatic pressure-relief valve, and the automatic pressure-relief valve is interlocked with the pressure in the reactor. When the reactor pressure reaches 15 - 25 kPa, the pressure relief program is started, and when the pressure is reduced to less than 1 - 10 kPa during pressure relief, it automatically closes;

[0043] The horizontal cleaning rod corresponds to the outlet of the automatic pressure-relief valve, and the pressure-relief pipeline is dredged during pressure relief. The horizontal cleaning rod is controlled by a cylinder to perform dredging actions intermittently;

[0044] The pressure-relieved flue gas is sucked into the negative-pressure dust collection box through the pressure-relief pipeline and collides with the partition plate in the negative-pressure dust collection box to decelerate and fall.

[0045] The horizontal cleaning rod operates once every 3 to 15 seconds.

[0046] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An automatic pressure relief system for dredging and dust collection in titanium sponge production, characterized in that: The exhaust port of the automatic pressure relief valve for the sponge titanium production reactor is connected to the air inlet duct of the negative pressure dust collection box through a pressure relief pipeline. A horizontal cleaning rod is arranged in the pressure relief pipeline on one side corresponding to the exhaust port of the automatic pressure relief valve. A strip-shaped hole is arranged on one side of the pressure relief pipeline parallel to the horizontal cleaning rod. The horizontal cleaning rod is connected to the moving part of a cylinder through a connecting piece. The cylinder is fixed on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. A number of communicating cavities are formed in the negative pressure dust collection box through a number of partition plates. A number of cleaning ports are arranged at the top and bottom of the negative pressure dust collection box, and the cleaning ports are closed by rubber plugs. The cylinder is located on the outer wall surface of the pressure relief pipeline downstream of the strip-shaped hole. One end of the connecting piece extends into the pressure relief pipeline from the strip-shaped hole and is connected to the horizontal cleaning rod, and the other end of the connecting piece is connected to the moving part of the cylinder.

2. The pressure relief system for automatic dredging and dust collection used in titanium sponge production according to claim 1, wherein: The automatic pressure relief valve is interlocked with the reactor.

3. An automatic pressure relief system for dredging and dust collection in titanium sponge production according to claim 1, characterized in that: The automatic pressure relief valve and the horizontal cleaning rod have interlocking.

4. A method for using a pressure relief system for automatic dredging and dust collection in titanium sponge production as described in any one of claims 1 to 3, characterized in that, It includes the following steps: Pressure relief is controlled by an automatic pressure relief valve. The automatic pressure relief valve is interlocked with the pressure in the reactor. When the reactor pressure reaches 15 - 25 kPa, the pressure relief program is started, and when the pressure is reduced to below 1 - 10 kPa, it is automatically closed. The outlet of the automatic pressure relief valve corresponds to the horizontal cleaning rod. When relieving pressure, the pressure relief pipeline is dredged, and the horizontal cleaning rod is controlled by the cylinder to perform intermittent dredging actions. The pressure relief flue gas is sucked into the negative pressure dust collection box by negative pressure through the pressure relief pipeline, and collides with the partition plates in the negative pressure dust collection box to decelerate and fall.

5. The method for using the pressure relief system for automatic dredging and dust collection in titanium sponge production according to claim 4, characterized in that: The horizontal cleaning rod acts once every 3 - 15 seconds.

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