An ejector for feeding PTA oxidation reactor

Abstract

The present invention discloses an injector for feeding a PTA oxidation reactor, comprising an air inlet pipe, one end of which is fixedly connected to an air inlet flange, the other end of which is rotatably connected to an injector nozzle, the interior of which is fixedly connected to a material pipe, the interior of which is fixedly connected to a feed pipe, one end of which is fixedly connected to a connecting hose, one end of which is fixedly connected to a material pipe, the top of which is fixedly connected to a feed valve, and an adjusting component is arranged inside the feed valve. The present invention directly installs the feed pipe inside the air inlet pipe, so that the material pipe can contact with air when discharging materials, thereby lengthening the contact time between air and materials, thereby minimizing the air feed amount to the greatest extent, avoiding excessive oxidation reaction and waste of raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of ejectors, and in particular to an ejector for feeding a PTA oxidation reactor. Background Art

[0002] The PTA oxidation reactor is used for the mixed oxidation reaction of acetic acid, paraxylene, terephthalic acid, bromine, etc. to generate purified terephthalic acid (PTA). After each medium is poured into the PTA oxidation reactor, it is mainly in liquid form. It is necessary to stir and moderate the medium in the reactor to accelerate the mixing speed of the various media and simultaneously generate the corresponding chemical reaction to generate the product PTA.

[0003] The existing PTA oxidation reactor lacks an injector that can eject air and mixed materials at the same time. The existing PTA oxidation reactor uses two separate injectors when introducing air and mixed materials. In the air inlet feeding area, since the contact time between the air ratio and the mixed materials is too short, the air feed rate can only be increased, which will produce an over-oxidation reaction, burn acetic acid and paraxylene in the raw material mixture, and increase the reaction cost. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an ejector for feeding a PTA oxidation reactor.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an injector for feeding a PTA oxidation reactor, comprising an air inlet pipe, one end of the air inlet pipe is fixedly connected to an air inlet flange, the other end of the air inlet pipe is rotatably connected to an injection nozzle, the interior of the injection nozzle is fixedly connected to a material pipe, the interior of the air inlet pipe is fixedly connected to a feed pipe, one end of the feed pipe is fixedly connected to a connecting hose, one end of the connecting hose is fixedly connected to the material pipe, the top end of the feed pipe is fixedly connected to a feed valve, an adjusting component is arranged inside the feed valve, and a corner component is arranged at the bottom end of the air inlet pipe.

[0006] As a further description of the above technical solution:

[0007] The adjusting assembly includes a twin-rotation screw, which is rotatably connected to the inner wall of the feed valve near the top, and the outer surface of the twin-rotation screw is threadedly connected to two symmetrically arranged sliders, the bottom end of the slider is rotatably connected to a rocker, the end of the rocker away from the slider is rotatably connected to a rotating block, the bottom end of the rotating block is rotatably connected to a connecting plate, the end of the connecting plate away from the rotating block is rotatably connected to a fixed block, and the bottom end of the fixed block is fixedly connected to the inner bottom wall of the feed valve.

[0008] As a further description of the above technical solution:

[0009] The corner assembly includes a connecting block, which is fixedly connected to the bottom end of the intake pipe, a screw rod is rotatably connected inside the connecting block, an adjusting block is threadedly connected to the outer surface of the screw rod, a rocker rod is rotatably connected to one side of the adjusting block, an end of the rocker rod away from the adjusting block is rotatably connected to a positioning block, and the positioning block is fixedly connected to the bottom end of the injection nozzle.

[0010] As a further description of the above technical solution:

[0011] The twin-rotation screw penetrates the feed valve, and one end of the twin-rotation screw is fixedly connected with an adjusting button.

[0012] As a further description of the above technical solution:

[0013] The feed pipe is L-shaped and is provided with a chamfer for guiding the material.

[0014] As a further description of the above technical solution:

[0015] An air guide groove is provided on one side of the air inlet pipe close to the injection nozzle, and an air outlet groove connected with the air guide groove is provided inside the injection nozzle.

[0016] The present invention has the following beneficial effects:

[0017] 1. Compared with the prior art, the injector for feeding the PTA oxidation reactor directly installs the feed pipe inside the air inlet pipe, so that the material pipe can contact with the air when discharging the material, thereby lengthening the contact time between the air and the material, thereby minimizing the air feed amount to the greatest extent, avoiding excessive oxidation reaction and wasting materials.

[0018] 2. Compared with the prior art, the injector for feeding the PTA oxidation reactor can control the speed of feeding the mixed material through the setting of the adjustment component, which is convenient for adjusting the mixing ratio of the material and the air. At the same time, the injection nozzle can be rotated and adjusted through the setting of the corner component, so that the landing point of the ejected material and air from the injection nozzle can be adjusted, which is convenient for the use of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of an injector for feeding a PTA oxidation reactor proposed by the present invention;

[0020] Figure 2 The present invention proposes an injector for feeding a PTA oxidation reactor. Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 A schematic diagram of an injection nozzle of an injector for feeding a PTA oxidation reactor proposed in the present invention.

[0022] Legend:

[0023] 1. Inlet pipe; 2. Inlet flange; 3. Injection nozzle; 4. Material pipe; 5. Feed pipe; 6. Connecting hose; 7. Connecting block; 8. Screw rod; 9. Adjusting block; 10. Rocker rod; 11. Positioning block; 12. Feed valve; 13. Twin-rotating screw; 14. Slider; 15. Rocker; 16. Rotating block; 17. Connecting plate; 18. Fixing block; 19. Adjusting knob. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Reference Figure 1-3 The present invention provides an injector for feeding a PTA oxidation reactor, comprising an air inlet pipe 1, one end of which is fixedly connected to an air inlet flange 2, the other end of which is rotatably connected to an injector nozzle 3, the interior of the injector nozzle 3 is fixedly connected to a material pipe 4, the interior of the air inlet pipe 1 is fixedly connected to a feed pipe 5, one end of the feed pipe 5 is fixedly connected to a connecting hose 6, the feed pipe 5 is L-shaped, and the feed pipe 5 is provided with a chamfer for guiding materials, one end of the connecting hose 6 is fixedly connected to the material pipe 4, the top of the feed pipe 5 is fixedly connected to a feed valve 12, the interior of the feed valve 12 is provided with an adjusting component, the bottom end of the air inlet pipe 1 is provided with a corner component, the speed of feeding the mixed material can be controlled by the arranged adjusting component, and the mixing ratio of the material and the air can be conveniently adjusted, the corner component can make the injector nozzle 3 rotatably adjusted, so that the landing point of the ejected material and air from the injector nozzle 3 can be adjusted, and the use of the reactor is convenient.

[0026] The adjusting component includes a twin-rotation screw 13, which is rotatably connected to the inner wall of the feed valve 12 near the top. The outer surface of the twin-rotation screw 13 is threadedly connected to two symmetrically arranged sliders 14. The bottom end of the slider 14 is rotatably connected to a rocker 15, and the end of the rocker 15 away from the slider 14 is rotatably connected to a rotating block 16. The bottom end of the rotating block 16 is rotatably connected to a connecting plate 17, and the end of the connecting plate 17 away from the rotating block 16 is rotatably connected to a fixed block 18. The bottom end of the fixed block 18 is fixedly connected to the inner bottom wall of the feed valve 12. The twin-rotation screw 13 penetrates the feed valve 12, and one end of the twin-rotation screw 13 is fixedly connected to an adjusting button 19. By controlling the opening size of the two connecting plates 17, the feeding speed of the feed pipe 5 can be controlled.

[0027] The corner assembly includes a connecting block 7, which is fixedly connected to the bottom end of the air intake pipe 1, and the inside of the connecting block 7 is rotatably connected to a screw rod 8, and the outer surface of the screw rod 8 is threadedly connected to an adjusting block 9, and one side of the adjusting block 9 is rotatably connected to a rocker arm 10, and the end of the rocker arm 10 away from the adjusting block 9 is rotatably connected to a positioning block 11, and the positioning block 11 is fixedly connected to the bottom end of the injection nozzle 3. The angle of the injection nozzle 3 can be adjusted by moving the adjusting block 9, so that the landing point after the material and air are mixed can be adjusted, which is convenient for subsequent use.

[0028] An air guide groove is provided on one side of the air inlet pipe 1 close to the injection nozzle 3 , and an air outlet groove connected to the air guide groove is provided inside the injection nozzle 3 . The air passes through the air guide groove and then through the air outlet groove to directly contact the material sprayed from the material pipe 4 .

[0029] Working principle: Before using the injector, rotate the screw rod 8, the screw rod 8 moves the adjusting block 9, the adjusting block 9 rotates the rocker arm 10 to drive the injection nozzle 3 to rotate, so that the landing point of the material can be controlled, and then rotate the adjusting knob 19, the adjusting knob 19 drives the twin-rotating screw 13 to rotate, so that the twin-rotating screw 13 adjusts the position of the two sliders 14, the slider 14 drives the rocker arm 15 to rotate, and the rocker arm 15 rotates the connecting plate 17, so that the speed of the material entering the feed pipe 5 can be controlled, and finally the material is put into the feed valve 12, the material passes through the feed pipe 5, the connecting hose 6 and the material pipe 4, the air comes from the air intake flange 2, the air intake pipe 1 and the injection nozzle 3, and finally contacts and mixes in the ejection part of the injection nozzle 3.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injector for feeding a PTA oxidation reactor, comprising an air inlet pipe (1), characterized in that: One end of the air intake pipe (1) is fixedly connected to an air intake flange (2), the other end of the air intake pipe (1) is rotatably connected to an injection nozzle (3), the interior of the injection nozzle (3) is fixedly connected to a material pipe (4), the interior of the air intake pipe (1) is fixedly connected to a feed pipe (5), one end of the feed pipe (5) is fixedly connected to a connecting hose (6), one end of the connecting hose (6) is fixedly connected to the material pipe (4), the top end of the feed pipe (5) is fixedly connected to a feed valve (12), an adjusting component is arranged inside the feed valve (12), and the bottom end of the air intake pipe (1) is arranged to a corner component; The adjusting assembly comprises a twin-rotating screw (13), wherein the twin-rotating screw (13) is rotatably connected to the inner wall of the feed valve (12) near the top end, and the outer surface of the twin-rotating screw (13) is threadedly connected to two symmetrically arranged sliders (14), the bottom end of the slider (14) is rotatably connected to a rocker (15), and the end of the rocker (15) away from the slider (14) is rotatably connected to a rotating block (16), the bottom end of the rotating block (16) is rotatably connected to a connecting plate (17), and the end of the connecting plate (17) away from the rotating block (16) is rotatably connected to a fixed block (18), and the bottom end of the fixed block (18) is fixedly connected to the inner bottom wall of the feed valve (12); The corner assembly comprises a connecting block (7), the connecting block (7) is fixedly connected to the bottom end of the air intake pipe (1), the connecting block (7) is rotatably connected to a screw rod (8) inside, the screw rod (8) is threadedly connected to an adjusting block (9) on its outer surface, one side of the adjusting block (9) is rotatably connected to a swing rod (10), the end of the swing rod (10) away from the adjusting block (9) is rotatably connected to a positioning block (11), and the positioning block (11) is fixedly connected to the bottom end of the injection nozzle (3); The twin-rotation screw (13) passes through the feed valve (12), and one end of the twin-rotation screw (13) is fixedly connected to an adjusting knob (19); The feed pipe (5) is L-shaped, and the feed pipe (5) is provided with a chamfer for guiding the material; An air guide groove is provided on one side of the air inlet pipe (1) close to the injection nozzle (3), and an air outlet groove connected to the air guide groove is provided inside the injection nozzle (3).

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