Ammonia tail gas absorption device

Abstract

The utility model relates to the technical field of ammonia absorption, specifically an ammonia tail gas absorption device, including an absorption tower, wherein the outer fixed sleeve of the absorption tower is connected with a positioning hoop. In the utility model, an acidic liquid is added to the absorption tower through a liquid inlet pipe, a small part of the ammonia tail gas can be discharged through the exhaust column on the outer wall of the connecting pipe to discharge bubbles and acid liquid, and most of the ammonia tail gas is discharged into the upper drum and the lower drum, and then the ammonia tail gas is passed into the absorption tower through the propulsion pipes of the upper drum and the lower drum, because the propulsion pipe will generate a reaction force on the ammonia tail gas when discharging it, and the propulsion pipes on both sides of the upper drum and the lower drum face in opposite directions, so the reaction force of the discharge of the ammonia tail gas will drive the upper drum and the lower drum to rotate on the fixed ring, and the upper drum can drive multiple stirring rods to stir the acid liquid in the absorption tower, so as to increase the contact area between the ammonia tail gas and the acid liquid, thereby improving the absorption efficiency of the acid liquid on the ammonia tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia absorption, in particular to an ammonia tail gas absorption device. Background Art

[0002] In the production process of glyphosate, especially when preparing glyphosate aqueous solution, attention should be paid to the adjustment of pH value. If the pH value is not adjusted properly, whether the raw powder (glycine method) is added with ammonia water (or ammonia is passed), or the glyphosate raw powder or one-step oxidation method is used to produce glyphosate aqueous solution, ammonia gas may be generated due to excessively high pH value.

[0003] In the production process of glyphosate, some by-products may be produced, including tail gas and waste liquid containing ammonia. If these by-products are not properly treated, ammonia may be directly discharged into the environment, thus polluting the air environment. Therefore, the ammonia needs to be passed into an ammonia tail gas absorption tower. However, in the existing ammonia absorption tower, it is difficult for ammonia to fully contact with the acidic liquid, thereby reducing the absorption efficiency of ammonia. Utility Model Content

[0004] The purpose of the utility model is to provide an ammonia tail gas absorption device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An ammonia tail gas absorption device comprises an absorption tower, wherein a positioning hoop is fixedly sleeved on the outside of the absorption tower, and support frames are fixedly connected to the relative outer walls of the positioning hoop, the top of the absorption tower is fixedly connected to a liquid inlet pipe connected to the interior thereof, the bottom of the absorption tower is fixedly connected to a discharge bucket connected to the interior thereof, an air inlet pipe is fixedly connected to the outer wall of the absorption tower, the end of the air inlet pipe is fixedly connected to one end of a connecting pipe connected to the interior thereof, and the other end of the connecting pipe is fixedly connected to a fixing ring, an upper rotating drum is rotatably provided on the top of the fixing ring, a lower rotating drum is rotatably provided on the bottom of the fixing ring, and two positioning columns fixedly connected to the inner wall of the absorption tower are symmetrically fixedly connected to the outside of the fixing ring.

[0007] Furthermore, a solenoid valve is fixedly arranged on the air intake pipe, and two exhaust columns which are connected to the interior of the connecting pipe are symmetrically fixedly connected to the outer wall of the connecting pipe.

[0008] Furthermore, a sealing groove rotatably sleeved with a fixing ring is provided at the bottom end of the upper rotating drum and the top end of the lower rotating drum.

[0009] Furthermore, a plurality of propulsion pipes connected to the interiors of the upper drum and the lower drum are fixedly connected at equal distances to the outer walls thereof, and exhaust hoods are fixedly connected to the ends of the propulsion pipes.

[0010] Furthermore, a plurality of stirring rods are fixedly connected to the outer wall of the upper rotating drum in an annular manner at equal distances.

[0011] Furthermore, two arc blocks are symmetrically fixedly connected inside the absorption tower, a rotating seat is rotatably connected at the bottom center of the lower rotating drum, two hollow columns are symmetrically fixedly connected on the outer wall of the rotating seat, sliding rods are slidably sleeved in the two hollow columns, the ends of the sliding rods are fixedly connected to positioning seats, a roller is rotatably connected in the positioning seat, the roller slides against the surface of the arc block, the ends of the sliding rods are fixedly connected to sliding blocks, and the side walls of the sliding blocks are fixedly connected to extrusion springs.

[0012] Furthermore, a rotating shaft is fixedly connected at the center position of the bottom of the rotating seat, and a spiral crushing plate is fixedly connected to the bottom end of the outer wall of the rotating shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The ammonia tail gas produced by the production of glyphosate can be discharged into the connecting pipe through the air inlet pipe, and the acidic liquid is added to the absorption tower through the liquid inlet pipe. A small part of the ammonia tail gas can be discharged through the exhaust column on the outer wall of the connecting pipe to merge with the acid liquid. Most of the ammonia tail gas is discharged into the upper drum and the lower drum, and then the ammonia tail gas will be passed into the absorption tower through the propulsion pipes of the upper drum and the lower drum. When the propulsion pipe discharges the ammonia tail gas, a reaction force will be generated on it, and the propulsion pipes on both sides of the upper drum and the lower drum face in opposite directions, so the reaction force of the discharged ammonia tail gas will drive the upper drum and the lower drum to rotate on the fixed ring, and the upper drum can drive multiple stirring rods to stir the acid liquid in the absorption tower, thereby increasing the contact area between the ammonia tail gas and the acid liquid, thereby improving the absorption efficiency of the acid liquid to the ammonia tail gas.

[0015] 2. When the lower drum rotates, it will drive the rotating seat and the two hollow columns to rotate, thereby driving the roller connected to the end of the sliding rod to slide and roll on the inner wall of the absorption tower and the inner walls of the two arc blocks. Since the sliding block at the end of the sliding rod is connected to an extrusion spring, when the roller rolls from the arc block to the inner wall of the absorption tower, the extrusion spring can squeeze the sliding rod to pop out, and the roller will bounce and conflict with the inner wall of the absorption tower, thereby driving the absorption tower to vibrate, thereby preventing the salt slag produced when the ammonia tail gas and the acid solution are dissolved from adhering to the inner wall of the absorption tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 3This is a schematic diagram of the internal structure of the absorption tower in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the upper rotating drum in the utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the absorption tower in the utility model from a top view;

[0021] Figure 6 It is a schematic diagram of the connection structure of the middle and lower rotating drums of the utility model;

[0022] Figure 7 It is a schematic diagram of the internal structure of the hollow column of the utility model.

[0023] In the figure: 100, absorption tower; 101, positioning hoop; 102, support frame; 103, liquid inlet pipe; 104, discharge bucket; 105, arc block; 200, air inlet pipe; 201, solenoid valve; 202, connecting pipe; 203, exhaust column; 204, fixing ring; 205, positioning column; 301, upper drum; 302, lower drum; 303, propulsion pipe; 304, exhaust hood; 305, stirring rod; 306, rotating shaft; 307, rotating seat; 308, hollow column; 309, sliding rod; 310, roller; 311, sliding block; 312, extrusion spring; 313, sealing groove; 314, spiral crushing plate. DETAILED DESCRIPTION

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

[0025] See also Figures 1 to 7In the embodiment of the utility model, an ammonia tail gas absorption device includes an absorption tower 100, a positioning hoop 101 is fixedly sleeved on the outside of the absorption tower 100, and a support frame 102 is fixedly connected to the opposite outer walls of the positioning hoop 101, and a liquid inlet pipe 103 connected to the inside of the absorption tower 100 is fixedly connected to the top of the absorption tower 100, and a discharge bucket 104 connected to the inside of the absorption tower 100 is fixedly connected to the bottom of the absorption tower 100, and an air inlet pipe 200 is fixedly connected to the outer wall of the absorption tower 100, and the end of the air inlet pipe 200 is fixedly connected to one end of a connecting pipe 202 connected to the inside of the absorption tower, and the other end of the connecting pipe 202 is fixedly connected to a fixing ring 204, and an upper rotating drum 301 is rotatably provided on the top of the fixing ring 204, and the bottom of the fixing ring 204 is rotating. A lower rotating drum 302 is movably provided, and two positioning columns 205 fixedly connected to the inner wall of the absorption tower 100 are symmetrically fixedly connected to the outside of the fixed ring 204; a solenoid valve 201 is fixedly provided on the air inlet pipe 200, and two exhaust columns 203 connected to the interior thereof are symmetrically fixedly connected to the outer wall of the connecting pipe 202; a sealing groove 313 rotatably sleeved with the fixed ring 204 is provided at the bottom end of the upper rotating drum 301 and the top end of the lower rotating drum 302; a plurality of propulsion tubes 303 connected to the interior thereof are evenly fixedly connected to the outer walls of the upper rotating drum 301 and the lower rotating drum 302, and an exhaust hood 304 is fixedly connected to the end of the propulsion tube 303; a plurality of stirring rods 305 are fixedly connected to the outer wall of the upper rotating drum 301 at equal distances.

[0026] Specifically, the ammonia tail gas produced by the production of glyphosate can be discharged into the connecting pipe 202 through the air inlet pipe 200, and the acidic liquid is added to the absorption tower 100 through the liquid inlet pipe 103. A small part of the ammonia tail gas can be discharged through the exhaust column 203 on the outer wall of the connecting pipe 202 to discharge bubbles and merge with the acidic liquid. Most of the ammonia tail gas is discharged into the upper drum 301 and the lower drum 302, and then the ammonia tail gas is passed into the absorption tower 100 through the push pipe 303 of the upper drum 301 and the lower drum 302. When the inlet pipe 303 discharges the ammonia tail gas, a reaction force will be generated on it, and the propulsion pipes 303 on both sides of the upper rotary drum 301 and the lower rotary drum 302 face in opposite directions, so that the reaction force of the discharged ammonia tail gas will push the upper rotary drum 301 and the lower rotary drum 302 to rotate on the fixed ring 204, and the upper rotary drum 301 can drive multiple stirring rods 305 to stir the acid liquid in the absorption tower 100, thereby increasing the contact area between the ammonia tail gas and the acid liquid, thereby improving the absorption efficiency of the acid liquid to the ammonia tail gas.

[0027] Embodiment 1

[0028] like Figure 6-7As shown, in this embodiment, two arc blocks 105 are symmetrically fixedly connected inside the absorption tower 100, a rotating seat 307 is rotatably connected at the bottom center position of the lower rotating drum 302, and two hollow columns 308 are symmetrically fixedly connected on the outer wall of the rotating seat 307. Sliding rods 309 are slidably sleeved in the two hollow columns 308, and the ends of the sliding rods 309 are fixedly connected to positioning seats, and rollers 310 are rotatably connected in the positioning seats. The rollers 310 slide against the surface of the arc block 105, and the ends of the sliding rods 309 are fixedly connected to sliding blocks 311, and the side walls of the sliding blocks 311 are fixedly connected to extrusion springs 312.

[0029] In this embodiment, when the lower drum 302 rotates, the rotating seat 307 and the two hollow columns 308 are driven to rotate, thereby driving the roller 310 connected to the end of the sliding rod 309 to slide and roll on the inner wall of the absorption tower 100 and the inner walls of the two arc blocks 105. Since the sliding block 311 at the end of the sliding rod 309 is connected to the extrusion spring 312, when the roller 310 rolls from the arc block 105 to the inner wall of the absorption tower 100, the extrusion spring 312 can squeeze the sliding rod 309 to pop out, and the roller 310 will bounce and conflict with the inner wall of the absorption tower 100, thereby driving the absorption tower 100 to vibrate, thereby preventing the salt slag produced when the ammonia tail gas and the acid solution are dissolved from adhering to the inner wall of the absorption tower 100.

[0030] Embodiment 2

[0031] like Figure 6 As shown, in this embodiment, a rotating shaft 306 is fixedly connected to the bottom center of the rotating seat 307 , and a spiral crushing plate 314 is fixedly connected to the bottom end of the outer wall of the rotating shaft 306 .

[0032] During specific implementation, the rotating seat 307 can drive the rotating shaft 306 to rotate, so that the rotating shaft 306 can drive the spiral crushing plate 314 to rotate in the discharge bucket 104, so that the spiral crushing plate 314 can crush and discharge the salt slag produced by the acid liquid absorbing ammonia tail gas, thereby preventing the salt slag from clogging the discharge port.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ammonia tail gas absorption device, characterized in that: The invention comprises an absorption tower (100), wherein a positioning hoop (101) is fixedly sleeved on the outside of the absorption tower (100), and a support frame (102) is fixedly connected to the opposite outer walls of the positioning hoop (101), a liquid inlet pipe (103) connected to the inside of the absorption tower (100) is fixedly connected to the top of the absorption tower (100), a discharge bucket (104) connected to the inside of the absorption tower (100) is fixedly connected to the bottom of the absorption tower (100), and an air inlet pipe (200) is fixedly connected to the outer wall of the absorption tower (100). The end of the air inlet pipe (200) is fixedly connected to one end of a connecting pipe (202) connected to the inside thereof, the other end of the connecting pipe (202) is fixedly connected to a fixing ring (204), an upper rotating drum (301) is rotatably provided on the top of the fixing ring (204), a lower rotating drum (302) is rotatably provided on the bottom of the fixing ring (204), and the outside of the fixing ring (204) is symmetrically fixedly connected to two positioning columns (205) fixedly connected to the inner wall of the absorption tower (100).

2. The ammonia tail gas absorption device according to claim 1, characterized in that: The air intake pipe (200) is fixedly provided with a solenoid valve (201), and the outer wall of the connecting pipe (202) is symmetrically fixedly connected with two exhaust columns (203) which are in communication with the interior thereof.

3. The ammonia tail gas absorption device according to claim 1, characterized in that: The bottom end of the upper rotating drum (301) and the top end of the lower rotating drum (302) are both provided with a sealing groove (313) which is rotatably sleeved with the fixing ring (204).

4. The ammonia tail gas absorption device according to claim 1, characterized in that: A plurality of propulsion tubes (303) connected to the interior of the upper drum (301) and the lower drum (302) are fixedly connected at equal distances to the outer walls thereof, and an exhaust hood (304) is fixedly connected to the ends of the propulsion tubes (303).

5. The ammonia tail gas absorption device according to claim 1, characterized in that: A plurality of stirring rods (305) are fixedly connected in an annular manner at equal intervals on the outer wall of the upper rotating drum (301).

6. The ammonia tail gas absorption device according to claim 1, characterized in that: Two arc-surface blocks (105) are symmetrically and fixedly connected inside the absorption tower (100); a rotating seat (307) is rotatably connected at the bottom center of the lower rotating drum (302); two hollow columns (308) are symmetrically and fixedly connected on the outer wall of the rotating seat (307); a sliding rod (309) is slidably sleeved in each of the two hollow columns (308); a positioning seat is fixedly connected at the end of the sliding rod (309); a roller (310) is rotatably connected in the positioning seat; the roller (310) is slidably contacted with the surface of the arc-surface block (105); a sliding block (311) is fixedly connected at the end of the sliding rod (309); and a compression spring (312) is fixedly connected to the side wall of the sliding block (311).

7. The ammonia tail gas absorption device according to claim 6, characterized in that: A rotating shaft (306) is fixedly connected at the center of the bottom of the rotating seat (307), and a spiral crushing plate (314) is fixedly connected to the bottom end of the outer wall of the rotating shaft (306).

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