Explosion-proof device for chlorine dioxide reactor

Abstract

The invention relates to the technical field of reactor explosion-proof devices, and discloses a chlorine dioxide reactor explosion-proof device which comprises a three-way pipeline, an explosion-proof cover and a limiting plate, a bottom pipeline opening of the three-way pipeline is fixedly connected with a top port of a reactor, and a lateral pipeline opening of the three-way pipeline is fixedly connected with one end of an air outlet pipe; the anti-explosion cover is placed at a top pipeline opening of the three-way pipeline and completely covers the top pipeline opening, the bottom face of the anti-explosion cover abuts against the top face of the three-way pipeline and is in sealed connection with the top face of the three-way pipeline, the limiting plate is fixedly installed at the top of the three-way pipeline through a plurality of supporting rods, the limiting plate is located over the anti-explosion cover, and the outer edge of the limiting plate is located on the periphery of the anti-explosion cover. The pressure in the reactor can be rapidly reduced when the pressure in the chlorine dioxide reactor is sharply increased, the safety performance of the reactor is improved, and meanwhile the leakproofness of the reactor is not affected.

Description

Technical Field

[0001] The invention relates to the field of explosion-proof devices for reactors, in particular to an explosion-proof device for a chlorine dioxide reactor. Background Art

[0002] As a strong oxidant, chlorine dioxide is very sensitive to heat, vibration, impact and friction. When it is heated, exposed to light or encounters organic matter or other substances that can promote oxidation, it can promote its decomposition and easily cause explosion. Therefore, safety is a very important issue in the preparation process of chlorine dioxide. Due to various reasons such as high reaction temperature, water entering the reactor, organic matter brought into the raw materials, and high metal impurities, it is easy to cause the chlorine dioxide gas in the reactor to decompose rapidly, causing the gas phase pressure in the reactor to rise instantly. At this time, if the pressure in the reactor cannot be released in time, it is easy to cause safety accidents such as reactor explosion.

[0003] The prior art uses measures such as stopping the addition of raw materials, injecting cold water into the reactor to terminate the reaction, or adding dilution air into the reactor to reduce the pressure, but the above methods require a certain amount of operation time and cannot quickly reduce the pressure in the reactor. In order to solve the shortcomings of the prior art, the present invention provides an explosion-proof device for a chlorine dioxide reactor. Summary of the invention

[0004] The object of the present invention is to provide an explosion-proof device for a chlorine dioxide reactor, which can quickly reduce the pressure in the reactor when the internal pressure of the chlorine dioxide reactor increases sharply, thereby improving the safety performance of the reactor without affecting the airtightness of the reactor.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides an explosion-proof device for a chlorine dioxide reactor, comprising: a three-way pipe, an explosion-proof cover and a limit plate, wherein the bottom pipe port of the three-way pipe is fixedly connected to the top port of the reactor, and the lateral pipe port of the three-way pipe is fixedly connected to one end of an outlet pipe; the explosion-proof cover is placed at the top pipe port of the three-way pipe and completely covers the top pipe port, the bottom surface of the explosion-proof cover is abutted against and sealed against the top surface of the three-way pipe; the limit plate is fixedly installed on the top of the three-way pipe through a plurality of support rods, the limit plate is located directly above the explosion-proof cover, and the outer edge of the limit plate is located at the periphery of the explosion-proof cover.

[0006] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the flange on the top of the three-way pipe is made of titanium steel.

[0007] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, a sealing ring is provided on the top surface of the three-way pipe, and the bottom surface of the explosion-proof cover abuts against the sealing ring.

[0008] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, an annular groove is provided on the top surface of the three-way pipe, and the sealing ring is an O-ring installed in the annular groove.

[0009] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the cross-section of the annular groove is a trapezoid that is narrow at the top and wide at the bottom, and the width of the top opening of the annular groove is less than or equal to the diameter of the sealing ring.

[0010] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, an anti-corrosion layer is provided on the outer surface of the explosion-proof cover.

[0011] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the anti-corrosion layer is a fiberglass anti-corrosion layer.

[0012] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the explosion-proof cover includes a steel plate and a titanium-steel composite plate, the steel plate is welded on the top of the titanium-steel composite plate, the area of ​​the titanium-steel composite plate is larger than the area of ​​the steel plate, and the titanium-steel composite plate can completely cover the top pipe opening of the three-way pipe.

[0013] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the steel plate and the titanium-steel composite plate are both circular, and the steel plate and the titanium-steel composite plate are coaxially arranged.

[0014] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, a handle is provided on the top of the explosion-proof cover, the limiting plate is annular, and the diameter of the circular hole on the limiting plate is greater than the length of the handle and smaller than the diameter of the explosion-proof cover.

[0015] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the limit plate and the flange on the top of the three-way pipe are both provided with a plurality of circular holes, the plurality of circular holes on the limit plate match the plurality of circular holes on the flange on the top of the three-way pipe, and the two ends of the support rod are respectively connected to the limit plate and the circular holes on the flange on the top of the three-way pipe.

[0016] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the support rod includes a stud and a sleeve, the two ends of the stud respectively pass through the circular holes on the limit plate and the flange on the top of the three-way pipe, the sleeve is sleeved on the stud located between the limit plate and the three-way pipe, and a nut is installed on each end of the stud.

[0017] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, a plurality of buffers are provided on the surface of the limiting plate facing the explosion-proof cover, and the plurality of buffers are evenly distributed on the surface of the limiting plate.

[0018] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the buffer is made of acid-resistant rubber.

[0019] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the total mass of the explosion-proof cover is greater than or equal to 100 kg. The total mass of the explosion-proof cover is determined by the starting pressure. For example, when the starting pressure is 4.5 kPa and the diameter of the pipe opening of the three-way pipe is 600 mm, the total mass of the explosion-proof cover is 128 kg.

[0020] The present invention discloses an explosion-proof device for a chlorine dioxide reactor. The three-way pipe is used to guide the gas generated in the reactor into the gas outlet pipe, and the explosion-proof cover is used to seal the pipe opening at the top of the three-way pipe. Under normal conditions, the gas generated in the reactor cannot push the explosion-proof cover open. When the pressure in the reactor increases sharply, the gas generated in the reactor will push the explosion-proof cover open, so that the pressure in the reactor drops rapidly, avoiding the explosion of the reactor and improving safety. The limit plate can prevent the explosion-proof cover pushed open by the gas from causing safety risks to other positions, and is conducive to the rapid resetting of the explosion-proof cover. The present invention has a simple structure, is easy to install and disassemble, has a low production cost, has good corrosion resistance, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an explosion-proof device for a chlorine dioxide reactor of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of an embodiment of an explosion-proof device for a chlorine dioxide reactor of the present invention;

[0023] Figure 3 It is a schematic structural diagram of an explosion-proof cover in an embodiment of an explosion-proof device for a chlorine dioxide reactor of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a limit plate in an embodiment of an explosion-proof device for a chlorine dioxide reactor of the present invention;

[0025] Figure 5 The figure is a schematic diagram of the structure of a support rod in an embodiment of an explosion-proof device for a chlorine dioxide reactor of the present invention.

[0026] Component number description:

[0027] 100. Three-way pipe; 110. Flange; 111. Annular groove; 200. Explosion-proof cover; 210. Steel plate; 220. Titanium-steel composite plate; 230. Anti-corrosion layer; 240. Handle; 300. Limit plate; 310. Support rod; 311. Stud; 312. Sleeve; 313. Nut; 320. Round hole; 330. Buffer; 400. Exhaust pipe; 500. Sealing ring. DETAILED DESCRIPTION

[0028] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0029] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0030] See also Figure 1 The present invention provides an explosion-proof device for a chlorine dioxide reactor, which comprises: a three-way pipe 100, an explosion-proof cover 200 and a limiting plate 300, wherein the bottom pipe opening of the three-way pipe 100 is fixedly connected to the top port of the reactor, and the lateral pipe opening of the three-way pipe 100 is fixedly connected to one end of an air outlet pipe 400; the explosion-proof cover 200 is placed at the top pipe opening of the three-way pipe 100 and covers the top pipe opening completely, and the bottom surface of the explosion-proof cover 200 abuts against the top surface of the three-way pipe 100 and is sealed and connected. The limiting plate 300 is fixedly installed on the top of the three-way pipe 100 through a plurality of support rods 310, and the limiting plate 300 is located directly above the explosion-proof cover 200, and the outer edge of the limiting plate 300 is located at the periphery of the explosion-proof cover 200.

[0031] The present invention uses the three-way pipe 100 to be installed at the top port of the reactor. The three-way pipe 100 can guide the gas generated in the reactor into the gas outlet pipe 400, so as to enter the next process, and the explosion-proof cover 200 is used to seal the pipe opening at the top of the three-way pipe 100. Under normal conditions, the gas generated in the reactor cannot push the explosion-proof cover 200 open. When the pressure in the reactor increases sharply, the gas generated in the reactor will push the explosion-proof cover 200 open, so that the pressure in the reactor drops rapidly, avoiding the explosion of the reactor and improving safety. The limit plate 300 can prevent the explosion-proof cover 200 from flying out of the control range, preventing the explosion-proof cover 200 pushed open by the gas from causing safety risks to other positions, and is conducive to the rapid resetting of the explosion-proof cover 200. The present invention has a simple structure, convenient installation and disassembly, low production cost, good corrosion resistance and long service life.

[0032] See also Figure 2 In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the flange 110 on the top of the three-way pipe 100 is made of titanium steel. A sealing ring 500 is provided on the top surface of the three-way pipe 100, and the bottom surface of the explosion-proof cover 200 is against the sealing ring 500. An annular groove 111 is provided on the top surface of the three-way pipe 100, and the sealing ring 500 is an O-type sealing ring, and the sealing ring 500 is installed in the annular groove 111. The cross-section of the annular groove 111 is a trapezoid that is narrow at the top and wide at the bottom, and the width of the top opening of the annular groove 111 is less than or equal to the diameter of the sealing ring 500. The flange 110 is made of titanium steel, which can improve the structural strength and corrosion resistance of the flange 110 and increase the service life. The sealing ring 500 can improve the sealing between the three-way pipe 100 and the explosion-proof cover 200. The annular groove 111 enables the sealing ring 500 to be firmly mounted on the top surface of the three-way pipe 100 , thereby preventing the sealing ring 500 from falling off when the explosion-proof cover 200 flies out.

[0033] See also Figure 3In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, an anti-corrosion layer 230 is provided on the outer surface of the explosion-proof cover 200. For example, the anti-corrosion layer 230 is a glass fiber reinforced plastic anti-corrosion layer. The explosion-proof cover 200 includes a steel plate 210 and a titanium steel composite plate 220, the steel plate 210 is welded on the top of the titanium steel composite plate 220, the area of ​​the titanium steel composite plate 220 is larger than the area of ​​the steel plate 210, and the titanium steel composite plate 220 can completely cover the top pipe opening of the three-way pipe 100. The steel plate 210 and the titanium steel composite plate 220 are both circular, and the steel plate 210 and the titanium steel composite plate 220 are coaxially arranged. A handle 240 is provided on the top of the explosion-proof cover 200, and the limit plate 300 is annular, the diameter of the circular hole on the limit plate 300 is larger than the length of the handle 240, and the diameter of the circular hole on the limit plate 300 is smaller than the diameter of the explosion-proof cover 200. The anti-corrosion layer 230 can improve the anti-corrosion performance of the explosion-proof cover 200 and prevent corrosion from gases such as chlorine dioxide and chlorine. The titanium steel composite plate 220 has good structural strength, but the cost is relatively high. The steel plate 210 can reduce the production cost while ensuring the service life.

[0034] See also Figure 2 , Figure 4 and Figure 5 In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the stop plate 300 and the flange 110 at the top of the three-way pipe 100 are both provided with a plurality of circular holes 320, and the plurality of circular holes 320 on the stop plate 300 match the plurality of circular holes 320 on the flange 110 at the top of the three-way pipe 100, and the two ends of the support rod 310 are respectively connected with the stop plate 300 and the circular holes 320 on the flange 110 at the top of the three-way pipe 100. The support rod 310 includes a stud 311 and a sleeve 312, and the two ends of the stud 311 pass through the circular holes 320 on the stop plate 300 and the flange 110 at the top of the three-way pipe 100, respectively, and the sleeve 312 is sleeved on the stud 311 located between the stop plate 300 and the three-way pipe 100, and a nut 313 is respectively installed at the two ends of the stud 311. The support rod 310 can facilitate the rapid installation and disassembly of the limit plate 300. When conducting an airtightness test, the support rod 310 can be removed from the three-way pipe 100, and the limit plate 300 can be inverted and placed on the top of the explosion-proof cover 200, and then the support rod 310 is fixedly connected to the flange 110, thereby improving the airtightness of the explosion-proof cover 200 and ensuring the normal progress of the airtightness test.

[0035] See also Figure 1 and Figure 4In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, a plurality of buffers 330 are provided on the surface of the limit plate 300 facing the explosion-proof cover 200, and the plurality of buffers 330 are evenly distributed on the surface of the limit plate 300. The buffers 330 are made of acid-resistant rubber. The buffers 330 can buffer the impact of the explosion-proof cover 200 on the limit plate 300 when it jumps, thereby avoiding damage.

[0036] In an example of an explosion-proof device for a chlorine dioxide reactor of the present invention, the total mass of the explosion-proof cover 200 is greater than or equal to 100 kg. The total mass of the explosion-proof cover 200 is determined by the starting pressure and the pipe opening diameter of the three-way pipe 100. For example, when the starting pressure is 4.5 kPa and the pipe opening diameter of the three-way pipe is 600 mm, the total mass of the explosion-proof cover is 128 kg.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A chlorine dioxide reactor explosion-proof device, characterized in that: include: A three-way pipe, wherein the bottom pipe port of the three-way pipe is fixedly connected to the top port of the reactor, and the side pipe port of the three-way pipe is fixedly connected to one end of the gas outlet pipe; An explosion-proof cover, which is placed at the top pipe opening of the three-way pipe and completely covers the top pipe opening, and the bottom surface of the explosion-proof cover abuts against the top surface of the three-way pipe and is sealed and connected; A limit plate is fixedly mounted on the top of the three-way pipe through a plurality of support rods, the limit plate is located directly above the explosion-proof cover, and the outer edge of the limit plate is located at the periphery of the explosion-proof cover.

2. A chlorine dioxide reactor explosion-proof device as claimed in claim 1, characterized in that: The flange on the top of the three-way pipe is made of titanium steel.

3. A chlorine dioxide reactor explosion-proof device as claimed in claim 1, characterized in that: A sealing ring is arranged on the top surface of the three-way pipe, and the bottom surface of the explosion-proof cover abuts against the sealing ring.

4. A chlorine dioxide reactor explosion-proof device as claimed in claim 3, characterized in that: An annular groove is arranged on the top surface of the three-way pipe, and the sealing ring is an O-type sealing ring installed in the annular groove.

5. A chlorine dioxide reactor explosion-proof device as claimed in claim 4, characterized in that: The cross section of the annular groove is a trapezoid that is narrow at the top and wide at the bottom, and the width of the top opening of the annular groove is less than or equal to the diameter of the sealing ring.

6. The explosion-proof device of a chlorine dioxide reactor according to claim 1, characterized in that: An anti-corrosion layer is provided on the outer surface of the explosion-proof cover.

7. A chlorine dioxide reactor explosion-proof device as claimed in claim 6, characterized in that: The explosion-proof cover includes a steel plate and a titanium-steel composite plate. The steel plate is welded on the top of the titanium-steel composite plate. The area of ​​the titanium-steel composite plate is larger than that of the steel plate. The titanium-steel composite plate can completely cover the top pipe opening of the three-way pipe.

8. The explosion-proof device of a chlorine dioxide reactor according to claim 1, characterized in that: A handle is provided on the top of the explosion-proof cover, the limiting plate is annular, and the diameter of the circular hole on the limiting plate is greater than the length of the handle and smaller than the diameter of the explosion-proof cover.

9. The explosion-proof device for a chlorine dioxide reactor according to claim 1, characterized in that: The limiting plate and the flange on the top of the three-way pipe are both provided with a plurality of circular holes, the plurality of circular holes on the limiting plate match the plurality of circular holes on the flange on the top of the three-way pipe, and the two ends of the support rod are respectively connected with the limiting plate and the circular holes on the flange on the top of the three-way pipe; the support rod comprises a stud and a sleeve, the two ends of the stud respectively pass through the circular holes on the limiting plate and the flange on the top of the three-way pipe, the sleeve is sleeved on the stud located between the limiting plate and the three-way pipe, and a nut is respectively installed at both ends of the stud.

10. An explosion-proof device for a chlorine dioxide reactor as claimed in claim 9, characterized in that: A plurality of buffers are arranged on the surface of the limiting plate facing the explosion-proof cover, and the plurality of buffers are evenly distributed on the surface of the limiting plate.

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