Rotary adjusting nozzle and anti-corrosion water injection operation method for distillation tower top

Abstract

This invention discloses a rotary regulating nozzle for water injection into a distillation tower, comprising a spray assembly. The spray assembly includes a sleeve and a nozzle, with an inner cylinder inserted into the sleeve. The inner cylinder includes a discharge orifice, an adjusting element, and a limiting element, the limiting element engaging with the adjusting element. This device controls corrosion of crystallization at the top of the tower by rotating the inner cylinder to adjust the orifice diameter. This invention also discloses a method for anti-corrosion water injection at the top of a distillation tower.

Description

Technical Field

[0001] This invention relates to the field of corrosion protection equipment, specifically to a rotary regulating nozzle for water injection into a fractionation tower, and a method for corrosion protection water injection operation at the top of a fractionation tower. Background Technology

[0002] Corrosion at the top of fractionation towers is a common problem in oil refining plants, and water injection is typically used to control its rate. While most oil refining plants have designed various water injection nozzle structures for corrosion prevention, the corrosion at the top of fractionation towers remains uncontrolled.

[0003] CN212143094U discloses a simple adjustable nozzle, including a spray pipe, an impact ball, a fixing rod, and a nut. The impact ball is fixed to the fixing rod and installed at the outlet of the nozzle pipe. The fixing rod and the nozzle pipe are connected by a sliding structure. The position of the fixing rod is adjusted by the nut, thereby adjusting the position of the impact ball at the outlet of the nozzle pipe. The relative position of the impact ball and the spray pipe outlet can be adjusted according to different applications, thus obtaining water flow of different shapes in different water usage situations, including a gradually expanding conical water spray and a long-range water jet. However, this structure still cannot solve the corrosion problem at the top of the distillation tower. Furthermore, CN110622837A also lacks the ability to solve the above problems.

[0004] Therefore, how to improve the corrosion situation at the top of the distillation tower has become an urgent technical problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a rotary adjustable nozzle for water injection into a distillation tower. By rotating the inner cylinder, the diameter of the discharge orifice aligned with the nozzle can be adjusted, thereby determining the optimal injection orifice diameter and controlling corrosion from crystallization at the top of the tower. Another purpose of this invention is to provide a method for anti-corrosion water injection at the top of a distillation tower.

[0006] According to a first aspect of the invention, a rotary regulating nozzle for water injection in a distillation tower is provided, comprising: a spray assembly including a sleeve and a nozzle disposed at the bottom of the sleeve; an inner cylinder inserted into the sleeve for injecting fluid, the inner cylinder including a plurality of discharge holes of different sizes arranged circumferentially and penetrating the wall of the inner cylinder; an adjusting member fixed to the inner cylinder; and a limiting member fixedly connected to the top of the sleeve, the limiting member being capable of engaging with the adjusting member to prevent the adjusting member from rotating, wherein the nozzle is aligned with one of the discharge holes by rotating the inner cylinder, thereby allowing fluid to be ejected from the nozzle.

[0007] In one embodiment, the limiting member includes a pin socket fixedly connected to the sleeve, a spring fixed to the pin socket, and a pin head connected to the pin socket and the spring respectively, wherein the pin head is configured to engage with the adjusting member, and the spring is configured to prevent the pin head from disengaging from the adjusting member.

[0008] In one embodiment, the adjusting member includes a ratchet fixed to the outer periphery of the inner cylinder.

[0009] In one embodiment, the pin head includes a first portion that engages with the ratchet teeth of the ratchet to prevent further movement of the ratchet, and a second portion that engages with the pin socket through a through-hole.

[0010] In one embodiment, the second portion is provided with a mounting hole for connection with the spring.

[0011] In one embodiment, the inner cylinder includes a plurality of discharge orifice diameter scale marks arranged circumferentially, and the sleeve is provided with a reference mark, wherein when the reference mark is aligned with one of the plurality of discharge orifice diameter scale marks, the nozzle is aligned with a discharge orifice having a corresponding diameter.

[0012] In one embodiment, the sleeve includes a plate mounted on top, the plate having a plurality of holes for securing the pin socket, and the reference mark being disposed on the outer surface of the plate.

[0013] In one embodiment, the upper part of the pin socket is provided with a limiting cap to prevent the pin from falling off; and / or the spring bends after passing through the pin.

[0014] According to a second aspect of the present invention, a method for anti-corrosion water injection at the top of a distillation tower is provided, wherein the above-described rotary regulating nozzle for water injection in a distillation tower is used for pressurized regulation.

[0015] In one embodiment, the inner cylinder is rotated to align the discharge orifice with the nozzle with the orifice with the largest diameter, and the corrosion of the crystallization at the top of the tower is observed. If the corrosion of the crystallization at the top of the tower remains unchanged, the inner cylinder is rotated to align the discharge orifice with the nozzle with the smaller diameter in turn, until the corrosion of the crystallization at the top of the tower becomes severe. The rotation of the inner cylinder is stopped, and the diameter of the discharge orifice at this time is recorded. The discharge orifice with this diameter is maintained for long-term use. Attached Figure Description

[0016] The invention will now be described in detail with reference to the accompanying drawings, in which:

[0017] Figure 1The schematic diagram shows a rotary regulating nozzle for water injection in a distillation tower according to the present invention;

[0018] Figure 2 The schematic diagram shows a partial structural diagram of a rotary regulating nozzle for water injection in a distillation tower according to the present invention, specifically showing the locking state of the limiting member and the regulating member;

[0019] Figure 3 A schematic cross-sectional view of the sleeve in a rotary regulating nozzle for water injection in a distillation tower according to the present invention is shown.

[0020] Figure 4 A schematic diagram of the inner cylinder in a rotary regulating nozzle for water injection in a distillation tower according to the present invention is shown.

[0021] Figure 5 The schematic diagram shows the structure of the pin head in the limiting member according to the present invention;

[0022] Figure 6 The schematic diagram shows the structure of the ratchet in the adjusting member according to the present invention.

[0023] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 A schematic diagram of a rotary regulating nozzle 100 for water injection into a distillation tower according to the present invention is shown. Figure 1 As shown, the rotary regulating nozzle 100 for water injection in a distillation tower according to the present invention mainly includes an inner cylinder 10 and an injection assembly 20. Fluid can be injected into the interior of the inner cylinder 10.

[0026] The spray assembly 20 includes a sleeve 21 and a limiting member 30. Figure 3 A schematic cross-sectional view of the sleeve 21 in a rotary regulating nozzle 100 for water injection in a distillation tower according to the present invention is shown. Figure 1 and Figure 3 As shown, the sleeve 21 is constructed as a hollow cylindrical structure, used to fit around the outside of the inner cylinder 10 and form a sealed space between them. The sleeve 21 includes an upper part 211 and a lower part 212. The upper part 211 of the sleeve 21 is provided with a disc seat 22, which is used to fix the limiting member 30 on the sleeve 21. A nozzle 23 is provided on one side of the lower part 212 of the sleeve 21, which is used to discharge the fluid injected into the interior of the inner cylinder 10 to the outside.

[0027] In one embodiment of the present invention, such as Figure 1 As shown, the disc base 22 is constructed in the shape of a disc and includes a plurality of insertion holes 222 disposed on the disc base 22. The insertion holes 222 allow the limiting member 30 to be inserted into the disc base 22, thereby effectively fixing the limiting member 30 to the disc base 22.

[0028] Figure 4 A schematic diagram illustrates the structure of the inner cylinder 10 in a rotary regulating nozzle 100 for water injection into a distillation tower according to the present invention. Figure 4 As shown, the inner cylinder 10 is constructed as a hollow cylindrical structure. The diameter of the inner cylinder 10 is smaller than the diameter of the sleeve 21, therefore, the inner cylinder 10 can be inserted into the interior of the sleeve 21. As described above, since a sealed space is formed between the inner cylinder 10 and the sleeve 21, the possibility of corrosion between the inner cylinder 10 and the sleeve 21 is effectively eliminated.

[0029] In one embodiment of the present invention, such as Figure 4 As shown, the inner cylinder 10 also includes several discharge holes 11 of different diameters disposed at the bottom. These discharge holes 11 are arranged circumferentially and penetrate the side wall of the inner cylinder 10. Furthermore, after the inner cylinder 10 is inserted into the sleeve 21, the several discharge holes 11 of different diameters and the nozzle 23 will be in the same circumferential direction. Therefore, by rotating the inner cylinder 10, the nozzle 23 can be aligned with one of the several discharge holes of different diameters, thereby allowing fluid from the inner cylinder 10 to be discharged from the nozzle 23.

[0030] In one embodiment of the present invention, such as Figure 4 As shown, the inner cylinder 10 includes a rotary joint 14 mounted at the top. Therefore, when rotating the inner cylinder 10, the rotary joint 14 can increase the frictional area between the inner cylinder 10 and the palm, thereby increasing the frictional force and making it more convenient to rotate the inner cylinder 10.

[0031] In one embodiment of the invention, the inner cylinder 10 includes an adjusting member 12 fixed at its middle portion, the adjusting member 12 being capable of engaging with a limiting member 30 disposed on the disc base 22, thereby effectively preventing the adjusting member 12 from rotating.

[0032] According to the present invention, the adjusting member 12 includes a ratchet 121. Figure 6 A schematic diagram of the ratchet 121 in the adjusting member 12 according to the present invention is shown. Figure 6 As shown, the ratchet 121 is constructed in a disc shape and includes a plurality of ratchet teeth 122 extending outward from the outer periphery of the ratchet 121. Preferably, the ratchet teeth 122 are evenly arranged in the circumferential direction. The ratchet teeth 122 can engage with the limiting member 30, thereby effectively preventing the ratchet 121 from driving the inner cylinder 10 to rotate.

[0033] In one embodiment of the invention, the limiting member 30 includes a pin socket 31, a spring 32, and a pin head 33. For example... Figure 1 As shown, the bottom of the pin socket 31 is inserted into the socket 222 on the base 22 and fixed to the base 22. The middle part of the pin socket 31 is used to connect the spring 32, and the bottom end of the spring 32 is welded to the pin socket 31 to achieve a fixing effect with the pin socket 31. The top of the pin socket 31 is used to connect the pin head 33, and the pin head 33 is sleeved on the pin socket 31.

[0034] In one specific embodiment of the present invention, Figure 5 A schematic diagram illustrating the structure of the pin head 33 in the limiting member 30 according to the present invention is shown. Figure 5 As shown, the pin head 33 includes a first portion 34 and a second portion 35. The first portion 34 engages with the ratchet teeth 122 on the ratchet 121, effectively preventing further movement of the ratchet 121. The second portion 35 is fixedly connected to the first portion 34 and includes a through hole 36 thereon. The through hole 36 is used to engage with the top of the pin socket 31, thereby securing the pin head 33 to the pin socket 31.

[0035] In one embodiment of the present invention, such as Figure 5 As shown, the second part 35 is also provided with a mounting hole 351. The top end of the spring 32 can bend through the mounting hole 351 to fix the pin head 33 to the pin socket 31, thereby effectively preventing the pin head 33 from falling off the pin socket 31.

[0036] In one embodiment of the present invention, such as Figure 2 As shown, a limiting cap 37 is provided on the top of the pin socket 31. The limiting cap 37 is located above the pin head 33 and is fixedly connected to the pin socket 31, thereby effectively preventing the pin head 33 from falling off the pin socket 31.

[0037] Figure 2 The diagram schematically shows a partial structural schematic of a rotary regulating nozzle 100 for water injection in a distillation tower according to the present invention, specifically showing the locked state of the limiting member 30 and the regulating member 12. Figure 1 and Figure 2 As shown, the limiting member 30 is fixedly installed on the sleeve 21, while the adjusting member 12 is fixedly installed on the inner cylinder 10. Through the engagement of the adjusting member 12 and the limiting member 30, the inner cylinder 10 and the sleeve 21 maintain a fixed positional relationship. In other words, because the first part 34 of the pin head 33 in the limiting member 30 engages with the ratchet teeth 122 on the ratchet 121, the inner cylinder 10 and the sleeve 21 maintain a relatively stable state.

[0038] According to the present invention, such as Figure 1 and Figure 2As shown, the inner cylinder 10 includes a plurality of discharge orifice diameter scale marks 13 arranged circumferentially, while the disc base 22 is provided with a reference mark 221. When the reference mark 221 is aligned with one of the plurality of discharge orifice diameter scale marks 13, the nozzle 23 will be aligned with one of the plurality of discharge orifices 11 of different diameters with the corresponding orifice diameter.

[0039] According to a second aspect of the present invention, a method for anti-corrosion water injection at the top of a distillation tower is also provided. Specifically, it involves pressurized regulation using a rotary regulating nozzle 100 for water injection into the distillation tower as described above.

[0040] The installation steps for the overall structure of the rotary regulating nozzle 100 used for water injection in the distillation tower include:

[0041] First, the limiting assembly 30 is installed on the sleeve 21. Specifically, the pin socket 31 is installed on the plate seat 23 of the upper part 211 of the sleeve 21, and the spring 32 and the pin head 33 are installed on the pin socket 31. The top of the spring 32 is bent and passes through the mounting hole 351 on the pin head 33, or the limiting cap 37 is installed above the pin head 33 and fixedly connected to the pin socket 31, or both methods are used simultaneously, thereby fixing the pin head 33 to the pin socket 31.

[0042] Then, the adjusting member 12 is installed on the inner cylinder 10, that is, the ratchet 121 is fixedly installed on the inner cylinder 10.

[0043] Next, insert the inner cylinder 10 into the sleeve 21 to complete the initial assembly.

[0044] Then, rotate the inner cylinder 10. When one of the several discharge hole diameter scale marks 13 coincides with the reference mark 221, one of the several discharge holes 11 with different diameters has a corresponding diameter and aligns with the nozzle 23, keeping the positions of the inner cylinder 10 and the sleeve 21 fixed at this time.

[0045] Next, adjust the position of ratchet 121 so that ratchet 121 and pin 23 are locked together. Mark the position of ratchet 121 on the inner cylinder 10 at this time, and fix ratchet 121 in this position.

[0046] The installation process is now complete. By rotating the inner cylinder 10, one of the discharge holes 11 of different diameters is aligned with the nozzle 23, thereby achieving pressurized adjustment of the rotary regulating nozzle 100 used for water injection into the distillation tower.

[0047] Furthermore, according to the present invention, the steps for using the rotary regulating nozzle 100 for water injection in a distillation tower include:

[0048] First, rotate the inner cylinder 10 to align the discharge hole 11 with the nozzle 23, and observe the corrosion of the crystallization at the top of the tower. Then, while keeping the corrosion of the crystallization at the top of the tower unchanged, rotate the inner cylinder 10 to align the discharge hole 11 with the nozzle 23 in turn, until the corrosion of the crystallization at the top of the tower becomes severe. Finally, stop rotating the inner cylinder 10 and record the diameter of the discharge hole 11 at this time, and maintain the discharge hole with this diameter for long-term use.

[0049] It should be noted that if the corrosion effect of crystallization at the top of the tower intensifies after a period of use, the above operation needs to be repeated to redetermine the optimal pore size, thereby achieving effective control over the corrosion of crystallization at the top of the tower.

[0050] This invention employs a combined structure of inner cylinder 10 and spray assembly 20. On one hand, the position of inner cylinder 10 and sleeve 21 is controlled in real time by the engagement of adjusting member 12 and limiting member 30. On the other hand, by rotating inner cylinder 10, the size of the discharge hole 11 aligned with nozzle 23 can be adjusted, thereby determining the optimal spray hole diameter and thus controlling the corrosion of crystallization at the top of the tower.

[0051] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of the present invention, and such changes or modifications should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for anti-corrosion water injection operation at the top of a distillation tower using a rotary adjusting nozzle (100), wherein the rotary adjusting nozzle (100) comprises: The spray assembly (20) includes a sleeve (21) and a nozzle (23) disposed at the bottom of the sleeve (21). An inner cylinder (10) for injecting fluid is inserted into the sleeve (21). The inner cylinder (10) includes a plurality of discharge holes (11) of different sizes arranged circumferentially and penetrating the wall of the inner cylinder (10), and an adjusting member (12) fixed to the inner cylinder (10). A limiting member (30) is fixedly connected to the top of the sleeve (21), the limiting member (30) being capable of engaging with the adjusting member (12) to prevent the adjusting member (12) from rotating. Fluid is allowed to be ejected from the nozzle (23) by rotating the inner cylinder (10) to align the nozzle (23) with one of the discharge holes (11). The inner cylinder (10) includes a plurality of discharge orifice diameter scale marks (13) arranged circumferentially. The sleeve (21) is provided with a reference mark (221). The reference mark (221) is aligned with the nozzle (23) circumferentially. Each discharge orifice diameter scale mark (13) is aligned with a discharge orifice (11) circumferentially. When the reference mark (221) is aligned with one of the plurality of discharge orifice diameter scale marks (13), the nozzle (23) is aligned with a discharge orifice (11) with a corresponding orifice diameter. The method includes: By rotating the inner cylinder (10) to align the discharge hole (11) with the nozzle (23), the corrosion of the crystallization at the top of the tower can be observed. While keeping the corrosion condition of the crystallization at the top of the tower unchanged, rotate the inner cylinder (10) to align the smaller discharge hole (11) with the nozzle (23) in turn until the corrosion condition of the crystallization at the top of the tower becomes worse. Stop rotating the inner cylinder (10) and record the diameter of the discharge hole (11) at this time, and maintain the discharge hole with this diameter for long-term use; If, after a period of use, the corrosion effect of crystallization at the top of the tower is found to be aggravated, the above operation needs to be repeated to redetermine the optimal aperture.

2. The method for anti-corrosion water injection at the top of a distillation tower according to claim 1, characterized in that, The limiting member (30) includes a pin socket (31) fixedly connected to the sleeve (21), a spring (32) fixed on the pin socket (31), and a pin head (33) respectively connected to the pin socket (31) and the spring (32). The pin (33) is configured to engage with the adjusting member (12), and the spring (32) is configured to prevent the pin (33) from disengaging from the adjusting member (12).

3. The method for anti-corrosion water injection at the top of a distillation tower according to claim 2, characterized in that, The adjusting member (12) includes a ratchet (121) fixed on the outer periphery of the inner cylinder (10).

4. The method for anti-corrosion water injection at the top of a distillation tower according to claim 3, characterized in that, The pin (33) includes a first part (34) that engages with the ratchet teeth (122) of the ratchet (121) to prevent further movement of the ratchet (121), and a second part (35) that engages with the pin socket (31) through a through hole (36).

5. The method for anti-corrosion water injection at the top of a distillation tower according to claim 4, characterized in that, The second part (35) is provided with a mounting hole (351) for connecting with the spring (32).

6. The method for anti-corrosion water injection at the top of a distillation tower according to claim 5, characterized in that, The sleeve (21) includes a plate base (22) mounted on the top, the plate base (22) having a plurality of insertion holes (222) for fixing the pin socket (31), and the reference mark (221) being disposed on the outer surface of the plate base (22).

7. The method for anti-corrosion water injection at the top of a distillation tower according to claim 6, characterized in that, The upper part of the pin socket (31) is provided with a limiting cap to prevent the pin head (33) from falling off; and / or The spring (32) bends after passing through the pin.

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