Ammonia gas recovery tower structure with condensation reflux

Abstract

The utility model provides a gaseous ammonia recovery tower structure with condensation reflux, which comprises a tower body, a gas inlet pipe is inserted at the bottom end of the tower body, a gas outlet is arranged at the top end of the tower body, a condensation component is detachably connected in the tower body, the bottom end of the condensation component is fixedly connected with an atomization component, and the atomization component is fixedly connected with the bottom end of the tower body. A mixing assembly is detachably connected to the position, close to the top end, of an inner cavity of the tower body, a compressor matched with the condensation assembly to conduct auxiliary condensation on ammonia-containing gas is detachably connected into the gas inlet pipe, and the condensation assembly absorbs heat generated by the reaction of ammonia molecules and condensate water mist generated by atomization of the atomization assembly. The reaction generated by ammonia molecules and condensate water mist is prevented from moving in the reverse reaction direction, the solubility of the ammonia molecules in the condensate water mist is improved, and the absorption efficiency of ammonia gas is further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of ammonia recovery equipment, and in particular to a structure of ammonia recovery tower with condensation reflux. Background Technology

[0002] Ammonia recovery towers are key equipment used in chemical, environmental protection and other fields to recover ammonia from waste gas or waste liquid. They are widely used in industries such as synthetic ammonia, fertilizer production, coking, refrigeration, and wastewater treatment.

[0003] A patent with publication number CN210145825U discloses an ammonia recovery tower, including an ammonia removal tower. The ammonia removal tower has a vertically oriented outlet and inlet at its upper and lower ends, respectively. A storage tank is located on one side of the ammonia removal tower. The inner cavity of the ammonia removal tower consists of interconnected ammonia removal chamber, a demisting chamber, and a gas collection chamber arranged sequentially from bottom to top. The ammonia removal chamber has a horizontally arranged circular steel mesh with multiple evenly distributed mounting holes on its end face. Air atomizing nozzles are inserted into these mounting holes. The liquid inlet of the air atomizing nozzle is connected to the storage tank via a pipe, and the air inlet of the air atomizing nozzle is connected to an external air pump via an air pipe. The demisting chamber has a vertically arranged demister. By installing air atomizing nozzles in the ammonia removal chamber, the liquid in the storage tank is demisted. The ammonia removal liquid is atomized and sprayed onto the ammonia-containing tail gas, greatly increasing the contact area between the liquid and the gas and improving the removal efficiency. By installing a demister on the upper side of the ammonia removal chamber, the atomized liquid droplets are blocked and fall to the bottom of the chamber as the atomized liquid is carried upwards by the rising ammonia-containing tail gas. The demister's demisting channel increases the residence time of the ammonia-containing tail gas, resulting in more complete ammonia atomization and liquid removal reaction and recovery. A gas collection chamber is installed at the exhaust port above the demister, allowing the purified gas to accumulate in the chamber, preventing excessive internal pressure and reduced removal efficiency due to delayed gas collection at the outlet. This invention features excellent ammonia removal effect and a reasonable design.

[0004] However, the ammonia removal liquid used is either an aqueous solution or a dilute acid solution. Regardless of whether the ammonia removal liquid is an aqueous solution or a dilute acid solution, the reaction of ammonia dissolving in the ammonia removal liquid is a reversible exothermic reaction. As the ammonia dissolves in the ammonia removal liquid, the temperature inside the ammonia removal tower will rise. As the temperature rises, the reaction of ammonia dissolving in the ammonia removal liquid will proceed in the reverse direction, which reduces the efficiency of ammonia dissolving in the ammonia removal liquid and thus reduces the ammonia recovery efficiency.

[0005] Therefore, it is necessary to provide a new ammonia recovery tower structure with condensation reflux to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a gaseous ammonia recovery tower structure with condensation reflux.

[0007] The ammonia recovery tower structure with condensation reflux provided by this utility model includes: a tower body, an inlet pipe inserted at the bottom of the tower body, an outlet at the top of the tower body, a condensation component detachably connected inside the tower body, an atomizing component fixedly connected at the bottom of the condensation component, a mixing component detachably connected near the top of the tower body cavity, and a compressor detachably connected inside the inlet pipe to assist in the condensation of ammonia-containing gas in conjunction with the condensation component.

[0008] Preferably, the mixing component includes a fixing plate, which is detachably connected to the inner cavity of the tower body. The fixing plate has multiple ventilation holes. A drive motor is detachably connected to the top of the fixing plate. The output end of the drive motor is inserted into the fixing plate, and multiple blades are inserted into the output end of the drive motor.

[0009] Preferably, the atomizing component includes a mounting plate with multiple mounting holes. Multiple atomizing nozzles are detachably connected to the mounting holes, and the other end of each atomizing nozzle is inserted into the mounting plate.

[0010] Preferably, the condensation assembly includes a condenser tube inserted into the inner cavity of the tower body. One end of the condenser tube passes through the side wall of the tower body, and the other end of the condenser tube is fixedly connected to a conduit, which is inserted into the mounting plate.

[0011] Preferably, the mounting plate is hollow and has multiple ventilation holes arranged in a circle around the central axis of the mounting plate.

[0012] Preferably, the condenser tube is arranged in a spiral and is directly opposite to multiple vent holes.

[0013] Preferably, the bottom of the tower body is conical, and a drain port is provided at the bottom of the tower body.

[0014] Compared with related technologies, the ammonia recovery tower structure with condensation reflux provided by this utility model has the following beneficial effects:

[0015] This invention provides a gaseous ammonia recovery tower structure with condensation reflux. In specific implementation, the ammonia gas entering the tower body is condensed by the condensation component, thereby liquefying the ammonia gas and reducing the possibility of ammonia gas being discharged from the outlet. At the same time, the liquefied ammonia molecules slide down along the condensation component to the upper surface of the atomizing component, where the liquefied ammonia molecules are absorbed, improving the absorption efficiency of ammonia molecules. Simultaneously, the condensation component absorbs the heat generated by the reaction between ammonia molecules and the condensate water mist produced by the atomizing component, preventing the reaction between ammonia molecules and condensate water mist from moving in the reverse reaction direction, improving the solubility of ammonia molecules in condensate water mist, and further improving the absorption efficiency of ammonia gas. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the ammonia recovery tower with condensation reflux provided by this utility model;

[0017] Figure 2 A partial structural schematic diagram of the ammonia recovery tower with condensation reflux provided by this utility model;

[0018] Figure 3 A partial structural cross-sectional view of the ammonia recovery tower with condensation reflux provided by this utility model;

[0019] Figure 4 A schematic diagram of the atomizing component and part of the condensing component structure of the ammonia recovery tower with condensation reflux provided by this utility model.

[0020] Figure 5 The front view of the overall structure of the atomizing component and the condensing component of the ammonia recovery tower structure with condensation reflux provided by this utility model.

[0021] The following are the labels in the diagram: 1. Tower body; 2. Inlet pipe; 3. Outlet; 4. Drain; 5. Condensation assembly; 51. Condensation pipe; 52. Pipe; 53. Water pump; 54. Water tank; 6. Atomizing assembly; 61. Mounting plate; 62. Mounting hole; 63. Atomizing nozzle; 64. Vent hole two; 7. Mixing assembly; 71. Fixing plate; 72. Vent hole one; 73. Drive motor; 74. Fan blade; 8. Compressor. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figure 1 — Figure 5 ,in, Figure 1 A schematic diagram of the overall structure of the ammonia recovery tower with condensation reflux provided by this utility model; Figure 2 A partial structural schematic diagram of the ammonia recovery tower with condensation reflux provided by this utility model; Figure 3 A partial structural cross-sectional view of the ammonia recovery tower with condensation reflux provided by this utility model; Figure 4 A schematic diagram of the atomizing component and part of the condensing component structure of the ammonia recovery tower with condensation reflux provided by this utility model. Figure 5 The front view of the overall structure of the atomizing component and the condensing component of the ammonia recovery tower structure with condensation reflux provided by this utility model.

[0024] In practical implementation, a gaseous ammonia recovery tower structure with condensation reflux is described as follows: Figure 1 — Figure 5As shown, it includes: a tower body 1, an air inlet pipe 2 inserted at the bottom of the tower body 1, an air outlet 3 at the top of the tower body 1, a conical bottom end of the tower body 1, a liquid drain outlet 4 at the bottom of the tower body 1, a condenser assembly 5 detachably connected inside the tower body 1, an atomizing assembly 6 fixedly connected to the bottom of the condenser assembly 5, a mixing assembly 7 detachably connected to the inner cavity of the tower body 1 near the top end, and a compressor 8 detachably connected inside the air inlet pipe 2 to assist in the condensation of ammonia-containing gas in conjunction with the condenser assembly 5.

[0025] It should be noted that by connecting the condenser component 5 and the atomizing component 6, the liquid in the atomizing component 6 comes from the condenser component 5. This not only ensures that the liquid temperature is low, but also shifts the reaction between the atomized liquid and the condensate towards the positive reaction direction, thereby improving the absorption efficiency of ammonia.

[0026] Compressor 8 is a screw compressor 8. The screw compressor 8 compresses the mixed gas entering the tower body 1 to a pressure of 10 atm. At this pressure, the condensation point of ammonia rises to -33 degrees Celsius, significantly reducing the workload of the condenser assembly 5. The gas compressed by compressor 8 enters the tower body 1 and mixes with the atomized condensate by the atomizing assembly 6, causing ammonia to dissolve into the condensate mist. The ammonia reacts with the condensate mist to form ammonium salts, releasing heat. The condenser assembly 5 then cools the air inside the tower body 1 and absorbs the heat generated by the reaction of ammonia and condensate. The process involves collecting ammonia molecules to maintain the temperature inside tower 1 at the condensation temperature of ammonia. If ammonia molecules in the air are not absorbed into the condensate mist, they will form ammonia water under the condensation effect of the condensation component 5 and drip down along the condenser tube 51, thus preventing the ammonia molecules from escaping and improving the absorption efficiency of ammonia molecules. The condensed ammonia water or the mixed condensate containing ammonia salts will be collected by the mixing component 7 and form water droplets, which will fall to the drain port 4, thereby recovering and reusing ammonia molecules. Other gases that are not absorbed by the condensate mist will be discharged from tower 1 through the gas outlet 3.

[0027] The condensate is a dilute sulfuric acid aqueous solution mixed with ethylene glycol.

[0028] The mixing component 7 includes a fixing plate 71, which is detachably connected to the inner cavity of the tower body 1. The fixing plate 71 has multiple ventilation holes 72. The top of the fixing plate 71 is detachably connected to a drive motor 73. The output end of the drive motor 73 is inserted into the fixing plate 71, and multiple fan blades 74 are inserted into the output end of the drive motor 73.

[0029] It should be noted that after the mixed gas enters the tower body 1, it passes through the vent hole 72 and mixes with the condensate water mist. At this time, the drive motor 73 is started. The drive motor 73 drives multiple fan blades 74 to rotate around the output end of the drive motor 73 as the central axis, so that the air and condensate water mist in the tower body 1 are mixed, which improves the mixing efficiency of ammonia molecules and condensate water mist, and causes the condensate water mist to collect into water droplets. The water droplets pass through the atomizing component 6 and drip into the drain port 4, thereby collecting ammonia molecules.

[0030] The atomizing component 6 includes a mounting plate 61, which has multiple mounting holes 62. Multiple atomizing nozzles 63 are detachably connected to the mounting holes 62, and the other end of the atomizing nozzles 63 is inserted into the mounting plate 61.

[0031] It should be noted that the mounting plate 61 is hollow and has multiple vent holes 64 inside. These vent holes 64 are arranged circumferentially around the central axis of the mounting plate 61. The condensate enters the mounting plate 61 through the condensation component 5 and is then atomized by the atomizing nozzle 63, causing the condensate water mist to be distributed above the mounting plate 61. The mixed gas entering the tower body 1 through the air inlet pipe 2 passes through the vent holes 64 and mixes with the condensate water mist, undergoing an exothermic reaction to form ammonia salts. Under the mixing of multiple fan blades 74 and the drive motor 73, the ammonia salt-containing water mist mixes to form water droplets. The water droplets pass through the vent holes 64 and drip to the drain port 4, thereby recovering and utilizing ammonia molecules.

[0032] The condensing assembly 5 includes a condensing pipe 51, which is inserted into the inner cavity of the tower body 1. One end of the condensing pipe 51 passes through the side wall of the tower body 1, and the other end of the condensing pipe 51 is fixedly connected to a conduit 52. The conduit 52 is inserted into the mounting plate 61. A water pump 53 is provided at one end of the condensing pipe 51 that passes through the tower body 1, and a water tank 54 storing condensate is provided at the other end of the water pump 53.

[0033] The condenser tube 51 is spirally arranged and directly faces multiple vent holes 64. The spiral arrangement of the condenser tube 51 increases the contact area between the condenser tube 51 and the air. The fact that the condenser tube 51 is directly facing multiple vent holes 64 allows the air passing through the vent holes 64 to come into contact with the condenser tube 51, thereby causing ammonia molecules to form ammonia water on the tube wall of the condenser tube 51. The ammonia water slides down the condenser tube 51 to the upper end face of the mounting plate 61, thus preventing ammonia molecules from escaping and improving the absorption efficiency of ammonia gas.

[0034] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A gaseous ammonia recovery tower structure with condensation reflux, characterized in that, The tower includes a tower body (1), an air inlet pipe (2) inserted at the bottom of the tower body (1), an air outlet (3) opened at the top of the tower body (1), a condenser assembly (5) detachably connected inside the tower body (1), an atomizing assembly (6) fixedly connected at the bottom of the condenser assembly (5), a mixing assembly (7) detachably connected near the top of the inner cavity of the tower body (1), and a compressor (8) detachably connected inside the air inlet pipe (2) to assist in the condensation of ammonia-containing gas in conjunction with the condenser assembly (5).

2. The ammonia recovery tower structure with condensation reflux according to claim 1, characterized in that, The mixing component (7) includes a fixing plate (71), which is detachably connected to the inner cavity of the tower body (1). The fixing plate (71) has multiple ventilation holes (72) and a drive motor (73) is detachably connected to the top of the fixing plate (71). The output end of the drive motor (73) is inserted into the fixing plate (71), and multiple blades (74) are inserted into the output end of the drive motor (73).

3. The ammonia recovery tower structure with condensation reflux according to claim 2, characterized in that, The atomizing component (6) includes a mounting plate (61), which has multiple mounting holes (62) and multiple atomizing nozzles (63) detachably connected to the mounting holes (62). The other end of the atomizing nozzles (63) is inserted into the mounting plate (61).

4. The ammonia recovery tower structure with condensation reflux according to claim 3, characterized in that, The condensation assembly (5) includes a condenser tube (51), which is inserted into the inner cavity of the tower body (1). One end of the condenser tube (51) passes through the side wall of the tower body (1), and the other end of the condenser tube (51) is fixedly connected to a conduit (52), which is inserted into the mounting plate (61).

5. The ammonia recovery tower structure with condensation reflux according to claim 4, characterized in that, The mounting plate (61) is hollow and has multiple ventilation holes (64) inside. The multiple ventilation holes (64) are arranged in a circle around the central axis of the mounting plate (61).

6. The ammonia recovery tower structure with condensation reflux according to claim 5, characterized in that, The condenser tube (51) is spirally arranged and is directly opposite to the plurality of vent holes (64).

7. The ammonia recovery tower structure with condensation reflux according to claim 6, characterized in that, The bottom of the tower body (1) is conical, and a drain port (4) is provided at the bottom of the tower body (1).

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