Carbon dioxide collecting device
By setting up a condensing plate and refrigeration element in the collection box of the carbon dioxide collection device, small ammonia water droplets are condensed and collected, and the residual carbon dioxide is captured by heating again, the problems of ammonia water leakage and consumption are solved, and the carbon dioxide capture efficiency is improved.
Patent Information
- Application Number
- CN202510339024.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the carbon dioxide collection process, the small water droplets of ammonia water are too small and are prone to flow with the exhaust gas and carbon dioxide, resulting in ammonia water leakage and consumption. The existing technology is difficult to effectively solve this problem.
A carbon dioxide collection device is designed, and the rising ammonia water small water droplets are condensed and collected by setting up a condensing plate and refrigeration element in the collection box, and the collected ammonia water is reheated to capture the residual carbon dioxide in the exhaust gas.
By increasing the movement path of exhaust gas and carbon dioxide, the condensation effect of small ammonia water droplets is improved, the leakage and consumption of ammonia water is reduced, and the capture efficiency of carbon dioxide is improved.
Smart Images
Figure CN120054195A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of carbon dioxide recovery, and particularly relates to a carbon dioxide collection device. Background Art
[0002] Currently, ammonia water is used to collect carbon dioxide in industrial waste gas. For example, the waste gas is discharged into the bottom of a carbon dioxide absorption tower, and the ammonia water absorbs the carbon dioxide in the waste gas, and then the waste gas is discharged. After a period of collection, the carbon dioxide is released, and the ammonia water is heated to 59 degrees Celsius, and the ammonia water releases carbon dioxide. Whether collecting or releasing carbon dioxide, a certain temperature is required, which causes the evaporation of ammonia water, forming small ammonia water droplets. Many small ammonia water droplets will flow with the rising waste gas and carbon dioxide due to their too small volume and are discharged from the absorption tower, resulting in the leakage of ammonia water and the consumption of ammonia water. Therefore, it is necessary to collect the rising ammonia water to avoid excessive consumption of ammonia water. Summary of the Invention
[0003] Therefore, the present invention is made in view of the above problems. The purpose of the present invention is to provide a carbon dioxide collection device that condensingly collects the rising small ammonia water droplets through a collection box and reheats the collected ammonia water to capture the residual carbon dioxide in the rising waste gas. The present invention realizes the above purpose through the following technical solutions: A carbon dioxide collection device includes: a housing, an ammonia water tank, a recovery box, a motor, a liquid supplement pipeline, an intake pipeline, an exhaust pipeline 1, an exhaust pipeline 2, and a reflux pipeline; There are two ammonia water tanks, which are arranged vertically. The two ammonia water tanks are the first ammonia water tank and the second ammonia water tank respectively. The outer walls of the first ammonia water tank and the second ammonia water tank are respectively provided with a first heating element and a second heating element. Initially, the first heating element heats the first ammonia water tank to 25 degrees Celsius, and the second heating element heats the second ammonia water tank to 59 degrees Celsius. The temperatures of the first heating element and the second heating element are controllable. The first ammonia water tank and the second ammonia water tank are respectively connected to the liquid supplement pipeline and the intake pipeline. The top surface of the ammonia water tank is provided with a cover plate, which is rotatably connected to the top surface of the ammonia water tank. A gear is provided on the top surface of the cover plate, and a plurality of stirring blades are provided on the bottom surface of the cover plate. The motor is engaged with the gears in the two ammonia water tanks through two transmission gears; A partition 1 is provided in the middle of the recovery box. There is a certain distance between the lower end of the partition 1 and the bottom surface of the recovery box. There is a certain amount of ammonia water inside the recovery box. An exhaust pipe for waste gas is provided on one side of the recovery box, and a carbon dioxide discharge pipe is provided on the other side. A refrigeration element is provided on the wall surface of the recovery box, and a plurality of condensation plates are provided inside the recovery box. The plurality of condensation plates are arranged in a staggered manner; A first ammonia pool is rotatably arranged at the axis of the exhaust pipe 1 and the second ammonia pool. When the cover plate rotates forward, the exhaust pipe 1 is stationary. When the cover plate rotates backward, it drives the exhaust pipe 1 to synchronously rotate by a certain angle. A partition 2 is arranged inside the exhaust pipe 1. Two exhaust ports are opened on the exhaust pipe 1. The two exhaust ports are arranged vertically opposite to each other and are respectively communicated with the first ammonia pool and the second ammonia pool. Flow guide plates are respectively arranged at the lower ends of the two exhaust ports. The upper end of the exhaust pipe 2 penetrates into the recovery tank. A partition 3 is arranged inside the exhaust pipe 2. An exhaust port is arranged at the upper end of the exhaust pipe 2. The lower end of the exhaust pipe 2 is nested with the exhaust pipe 1. The upper end of the reflux pipe is communicated with the recovery tank. A pressure pump is arranged on the reflux pipe. The middle part of the reflux pipe is a U-shaped pipe group which is attached to the second heating element. The lower end of the reflux pipe penetrates into the exhaust pipe 2. A spray head is arranged at the end of the lower end of the reflux pipe. A reflux branch pipe is arranged at the middle section of the U-shaped pipe group. One end of the reflux branch pipe is communicated with the middle section of the U-shaped pipe group through a three-way valve 3.
[0004] Preferably, the intake pipe is communicated with two intake branch pipes through a three-way valve 1. The liquid supply pipe is communicated with two liquid supply branch pipes through a three-way valve 2. The two intake branch pipes and the two liquid supply branch pipes are respectively communicated with the first ammonia pool and the second ammonia pool.
[0005] Preferably, a liquid level gauge is arranged in the ammonia pool. The liquid level gauge detects the liquid level heights in the first ammonia pool and the second ammonia pool. High-concentration ammonia water is supplied to the first ammonia pool and the second ammonia pool through two liquid supply pipes.
[0006] Preferably, the cover plate in the first ammonia pool and the second ammonia pool is connected to the outer wall of the exhaust pipe 1 through a one-way bearing. The exhaust pipe 1 penetrates through the bottom surface of the second ammonia pool and is connected to the exhaust pipe 1 through a sealed bearing. The bottom surface of the first ammonia pool is connected to the lower end of the exhaust pipe 1 through a ratchet wheel.
[0007] Preferably, a baffle is rotatably arranged at the connection between the other end of the reflux branch pipe and the lower end of the reflux pipe.
[0008] Advantages of the present invention: The present invention condenses and collects the ammonia water droplets in waste gas and carbon dioxide through a collection tank. The purposes are as follows: First, the waste gas and carbon dioxide flow between multiple condensation plates, increasing the movement path of the waste gas and carbon dioxide, thereby improving the condensation effect on the ammonia water droplets in the waste gas and carbon dioxide; Second, when releasing carbon dioxide in ammonia water, a high temperature is required, and the evaporation amount of the ammonia water is large. Therefore, the total evaporation amount of the ammonia water in the first ammonia tank and the second ammonia tank is large. When a large amount of reflux ammonia water is sprayed out along the nozzle, it can better capture the residual carbon dioxide in the waste gas. However, the evaporation amount of the ammonia water solely through the first ammonia tank is small, and the effect of a small amount of ammonia water in capturing the residual carbon dioxide in the waste gas is poor. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0010] Figure 2 It is a schematic diagram of the structure of the ammonia tank of the present invention.
[0011] Figure 3 It is a schematic diagram of one side of the collection tank of the present invention.
[0012] Figure 4 It is a top view of the collection tank of the present invention.
[0013] Figure 5 It is a schematic diagram of the structures of exhaust duct one and exhaust duct two of the present invention.
[0014] Figure 6 It is a schematic diagram of the structure of the reflux pipe of the present invention.
[0015] Figure 7 It is a schematic diagram of the flow of waste gas, carbon dioxide, and reflux ammonia water of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this way, it is easy for those with ordinary skills in the art of the present invention to implement these embodiments. However, the present invention can be implemented in various different forms. Therefore, the present invention is not limited to the embodiments described below. Additionally, in order to more clearly describe the present invention, components not connected to the invention will be omitted from the drawings.
[0017] As Figure 1 shown, a carbon dioxide collection device includes: a housing 1, an ammonia tank 2, a recovery tank 3, a motor 4, a liquid supply pipe 5, an intake pipe 6, an exhaust duct one 7, an exhaust duct two 8, and a reflux pipe 9; The outer shell 1 is installed on the ground through support legs. Inside the outer shell 1, there are an ammonia pool 2, a recovery tank 3, a motor 4, an exhaust pipe 1 7, an exhaust pipe 2 8, and a reflux pipe 9. The number of the ammonia pools 2 is two, and the two ammonia pools 2 are arranged vertically. The two ammonia pools 2 are respectively the first ammonia pool 2-1 and the second ammonia pool 2-2. The outer walls of the first ammonia pool 2-1 and the second ammonia pool 2-2 are respectively provided with a first heating element 25-1 and a second heating element 25-2. Initially, the first heating element 25-1 heats the first ammonia pool 2-1 to 25 degrees Celsius, and the first ammonia pool 2-1 is used to capture carbon dioxide in the waste gas. The second heating element 25-2 heats the second ammonia pool 2-2 to 59 degrees Celsius, and the second ammonia pool 2-2 is used to release carbon dioxide in the ammonia water. The temperatures of the first heating element 25-1 and the second heating element 25-2 are controllable, so as to convert the functions of the first ammonia pool 2-1 and the second heating element 25-2. The intake pipe 6 is connected to two intake branch pipes 62 through a three-way valve 1 61, and the liquid supply pipe 5 is connected to two liquid supply branch pipes 52 through a three-way valve 2 51. The two intake branch pipes 62 and the two liquid supply branch pipes 52 are respectively connected to the first ammonia pool 2-1 and the second ammonia pool 2-2. Initially, the intake branch pipe 62 injects waste gas into the first ammonia pool 2-1. A liquid level gauge (not shown in the figure) detects the liquid level heights in the first ammonia pool 2-1 and the second ammonia pool 2-2, and high-concentration ammonia water is supplemented to the first ammonia pool 2-1 and the second ammonia pool 2-2 through the two liquid supply pipes 5. As Figure 2 shown, a cover plate 21 is provided on the top surface of the ammonia pool 2. The cover plate 21 is rotatably connected to the top surface of the ammonia pool 2. A gear 22 is provided on the top surface of the cover plate 21, and a plurality of stirring blades 23 are provided on the bottom surface of the cover plate 21. Two transmission gears 42 are provided on the transmission shaft 41 of the motor 4. The two transmission gears 42 are meshed with the gears 22 in the two ammonia pools 2, so as to make the stirring blades 23 stir the ammonia pool 2. As Figures 3-4 shown, the recovery tank 3 is provided above the two ammonia pools 2. A partition 1 31 is provided in the middle of the recovery tank 3. There is a certain distance between the lower end of the partition 1 31 and the bottom surface of the recovery tank 3. There is a certain amount of ammonia water inside the recovery tank 3, and the ammonia water submerges the distance between the lower end of the partition 1 31 and the bottom surface of the recovery tank 3, so as to divide the recovery tank 3 into two independent spaces. One side space of the recovery tank 3 is used to filter ammonia water small water droplets in the waste gas, and an exhaust pipe 34 is provided on one side space. The other side space of the recovery tank 3 is used to filter ammonia water small water droplets in the carbon dioxide, and a carbon dioxide exhaust pipe 35 is provided on the other side space. A refrigeration element 33 is provided on the wall surface of the recovery tank 3 to condense the ammonia water small water droplets. A plurality of condensation plates 32 are respectively provided in the two side spaces of the recovery tank 3, and the plurality of condensation plates 32 are arranged staggeredly to increase the moving paths of the carbon dioxide and the waste gas. The first ammonia pool 2-1 and the second ammonia pool 2-2 are rotationally arranged at the axis of the first exhaust pipe 7. The cover plates 21 in the first ammonia pool 2-1 and the second ammonia pool 2-2 are connected to the outer wall of the first exhaust pipe 7 through one-way bearings 27. The first exhaust pipe 7 penetrates through the bottom surface of the second ammonia pool 2-2 and is connected to the first exhaust pipe 7 through a sealing bearing 27. The bottom surface of the first ammonia pool 2-1 is connected to the lower end of the first exhaust pipe 7 through a ratchet 26. The purpose is that when the motor 4 drives the cover plate 21 to rotate forward, the forward rotation of the first exhaust pipe 7 is restricted by the ratchet 26. When the motor 4 drives the cover plate 21 to turn over, the first exhaust pipe 7 is driven to reverse by a certain angle through the one-way bearing 27, and this angle is 180 degrees; As Figure 5 As shown, a partition two 71 is arranged inside the first exhaust pipe 7. The partition two 71 divides the interior of the first exhaust pipe 7 into two independent spaces. Two exhaust ports 72 are opened on the first exhaust pipe 7. The two exhaust ports 72 are arranged vertically opposite to each other. The two exhaust ports 72 are respectively communicated with the first ammonia pool 2-1 and the second ammonia pool 2-2. Flow guide plates 73 are respectively arranged at the lower ends of the two exhaust ports 72. The upper end of the second exhaust pipe 8 penetrates into the recovery tank 3. A partition three 81 is arranged inside the second exhaust pipe 8. Exhaust ports 82 are respectively arranged on the opposite wall surfaces at the upper end of the second exhaust pipe 8. The two exhaust ports 82 are respectively communicated with two independent spaces of the recovery tank 3. The lower end of the second exhaust pipe 8 is nested with the first exhaust pipe 7; The upper end of the reflux pipe 9 is communicated with the recovery tank 3, and the communication position is above the initial liquid level of the recovery tank 3. A pressure pump 91 is arranged on the reflux pipe 9, as Figures 5-6As shown, the middle part of the reflux pipeline 9 is a U-shaped pipe group 90, which is attached to the second heating element 25-2. The lower end of the reflux pipeline 9 penetrates into the second exhaust pipeline 8, and a spray head 92 is arranged at the lower end of the reflux pipeline 9. A reflux branch pipe 93 is arranged at the middle section of the U-shaped pipe group 90. One end of the reflux branch pipe 93 is communicated with the middle section of the U-shaped pipe group 90 through a three-way valve 94, and a baffle 95 is rotatably arranged at the connection between the other end of the reflux branch pipe 93 and the lower end of the reflux pipe 9. When the second heating element 25-2 heats the ammonia water in the second ammonia water tank 2-2 to 25 °C, the reflux ammonia water is heated to 25 °C through the U-shaped pipe group 90 and sprayed out through the spray head 92 to perform secondary capture of the residual carbon dioxide in the waste gas. During the reflux process of the ammonia water, the impact force of the ammonia water flips the baffle 95, thereby sealing the reflux branch pipe 93. When the second heating element 25-2 heats the ammonia water in the second ammonia water tank 2-2 to 59 °C, the reflux ammonia water is heated to 25 °C in the middle section of the U-shaped pipe group 90 (at this time, the temperature of the second heating element 25-2 is high. If the reflux ammonia water flows along the U-shaped pipe group 90, the temperature of the flowing ammonia water will be high, which is not conducive to capturing carbon dioxide in the waste gas). The reflux ammonia water flows along the reflux branch pipe 93 and the reflux pipe 9, and finally sprays out along the spray head 92 to perform secondary capture of the residual carbon dioxide in the waste gas.
[0018] The working principle of the present invention: As Figure 7 As shown, the first ammonia water tank 2-1 captures carbon dioxide in the waste gas, and the second ammonia water tank 2-2 releases carbon dioxide in the ammonia water. Carbon dioxide and the waste gas enter two independent spaces of the collection box 3 along the first exhaust pipeline 7 and the second exhaust pipeline 8 respectively. Carbon dioxide and the waste gas move between the condensation plates 32, and carbon dioxide and the waste gas are discharged along the waste gas discharge pipe 34 and the carbon dioxide discharge pipe 35 respectively. The discharged carbon dioxide is stored. During the movement of carbon dioxide and the waste gas, the condensation plates 32 condense the ammonia water droplets. The ammonia water droplets converge and flow downward into the bottom of the collection box 3, causing the ammonia water level in the collection box 3 to rise. Since the temperature of the second ammonia water tank 2-2 is high, its ammonia water evaporation rate is large, and the total evaporation amount of the ammonia water in the first ammonia water tank 2-1 and the second ammonia water tank 2-2 is large, so the amount of reflux ammonia water is large. A large amount of reflux ammonia water moves along the reflux pipe 9, is reheated through the U-shaped pipe group 90, and finally sprays out along the spray head 92 to capture the residual carbon dioxide in the waste gas to improve the capture efficiency of carbon dioxide. After the first ammonia water tank 2-1 captures carbon dioxide in the waste gas for a certain period of time, the motor 4 rotates forward and backward to reverse the first exhaust pipeline 7 by 180 degrees, and the first heating element 25-1 and the second heating element 25-2 change the temperature, so that the second ammonia water tank 2-2 captures carbon dioxide in the waste gas, and the first ammonia water tank 2-1 releases carbon dioxide in the ammonia water, so that the process of collecting carbon dioxide can be continuous.
Claims
1. A carbon dioxide collection device, comprising: A housing (1), an ammonia water tank (2), a recovery box (3), a motor (4), a liquid replenishing pipe (5), an air intake pipe (6), an exhaust pipe 1 (7), an exhaust pipe 2 (8), and a reflux pipe (9); characterized in that: the number of the ammonia water tanks (2) is two, the two ammonia water tanks (2) are arranged up and down, the two ammonia water tanks (2) are respectively a first ammonia water tank (2-1) and a second ammonia water tank (2-2), and the outer walls of the first ammonia water tank (2-1) and the second ammonia water tank (2-2) are respectively provided with a first heating element (25-1) and a second heating element (25-2). element (25-2), the temperatures of the first heating element (25-1) and the second heating element (25-2) are controllable, the first ammonia water pool (2-1) and the second ammonia water pool (2-2) are respectively connected to a liquid replenishing pipe (5) and an air intake pipe (6); a cover plate (21) is provided on the top surface of the ammonia water pool (2), the cover plate (21) is rotatably connected to the top surface of the ammonia water pool (2), a gear (22) is provided on the top surface of the cover plate (21), and the motor (4) is meshed with the gears (22) in the two ammonia water pools (2) through two transmission gears (42); A partition plate (31) is provided in the middle of the recovery box (3), and a certain distance is provided between the lower end of the partition plate (31) and the bottom surface of the recovery box (3). A certain amount of ammonia water is contained inside the recovery box (3), and the ammonia water covers the lower end of the partition plate (31). An exhaust gas discharge pipe (34) is provided on one side of the recovery box (3), and a carbon dioxide discharge pipe (35) is provided on the other side. A refrigeration element (33) is provided on the wall surface of the recovery box (3), and a plurality of condensation plates (32) are provided inside the recovery box (3); The exhaust pipe one (7) is rotatably arranged at the axis of the first ammonia water pool (2-1) and the second ammonia water pool (2-2); when the cover plate (21) rotates forward, the exhaust pipe one (7) is stationary; when the cover plate (21) rotates reversely, the exhaust pipe one (7) is driven to rotate synchronously by a certain angle; a partition plate two (71) is arranged inside the exhaust pipe one (7); two exhaust ports (72) are provided on the exhaust pipe one (7); the two exhaust ports (72) are connected to the first ammonia water pool (2-1) and the second ammonia water pool (2-2) respectively; guide plates (73) are arranged at the lower ends of the two exhaust ports (72); the upper end of the exhaust pipe two (8) passes through the recovery box (3); a partition plate three (81) is arranged inside the exhaust pipe two (8); the upper end of the exhaust pipe two (8) is provided with an exhaust port (82); the lower end of the exhaust pipe two (8) is nested with the exhaust pipe one (7); The upper end of the return pipe (9) is connected to the recovery box (3), and a pressure pump (91) is arranged on the return pipe (9). The middle part of the return pipe (9) is a U-shaped pipe group (90), and the U-shaped pipe group (90) is fitted with the second heating element (25-2). The lower end of the return pipe (9) passes through the second intake and exhaust pipe (8), and a nozzle (92) is arranged at the lower end of the return pipe (9). A return branch pipe (93) is arranged at the middle section of the U-shaped pipe group (90), and one end of the return branch pipe (93) is connected to the middle section of the U-shaped pipe group (90) through a three-way valve (94).
2. A carbon dioxide collection device according to claim 1, characterized in that: A plurality of stirring blades (23) are provided on the bottom surface of the cover plate (21).
3. A carbon dioxide collection device according to claim 1, characterized in that: The air intake pipe (6) is connected to two air intake branches (62) via a three-way valve 1 (61), and the liquid replenishment pipe (5) is connected to two liquid replenishment branches (52) via a three-way valve 2 (51). The two air intake branches (62) and the two liquid replenishment branches (52) are respectively connected to a first ammonia water tank (2-1) and a second ammonia water tank (2-2).
4. A carbon dioxide collection device according to claim 1, characterized in that: A liquid level meter is provided in the ammonia water tank (2).
5. A carbon dioxide collection device according to claim 1, characterized in that: The cover plates (21) in the first ammonia water tank (2-1) and the second ammonia water tank (2-2) are connected to the outer wall of the exhaust pipe one (7) via a one-way bearing (27); the exhaust pipe one (7) passes through the bottom surface of the second ammonia water tank (2-2) and is connected to the exhaust pipe one (7) via a sealing bearing (27); the bottom surface of the first ammonia water tank (2-1) is connected to the lower end of the exhaust pipe one (7) via a ratchet (26).
6. A carbon dioxide collection device according to claim 1, characterized in that: A baffle (95) is rotatably provided at the point where the other end of the reflux branch pipe (93) is connected to the lower end of the reflux pipe (9).