Carbon dioxide recovery device in sodium pyrosulfite production

Abstract

The utility model relates to the technical field of sodium pyrosulfite, in particular to a carbon dioxide recovery device in sodium pyrosulfite production, which comprises a treatment box, a gas inlet pipe is arranged above one side of the treatment box, a gas outlet barrel is arranged below the other side of the treatment box, and an upper spraying box is mounted on one side, close to the gas inlet pipe, of the inner wall of the top of the treatment box. A lower spraying box is mounted on the side, close to the air outlet cylinder, of the inner wall of the bottom of the treatment box, and a plurality of nozzles are arranged on the two sides of the upper spraying box and the two sides of the lower spraying box. Through the arrangement of the upper spraying box and the lower spraying box, the upper spraying box is mounted on the side, close to the gas inlet pipe, of the top of the treatment box, and the lower spraying box is mounted on the side, close to the gas outlet barrel, of the inner wall of the bottom of the treatment box, so that the flowing distance of carbon dioxide gas in the treatment box is increased, and the time of carbon dioxide in the treatment box is prolonged; the carbon dioxide in the carbon dioxide is treated more thoroughly, and the carbon dioxide recovery quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium pyrosulfite, in particular to a carbon dioxide recovery device in the production of sodium pyrosulfite. Background Art

[0002] There are two main methods for preparing sodium metabisulfite: dry method and wet method. The dry method is to mix soda ash and water in a certain molar ratio, and after generating Na2CO3·nH2O in block form, put it into a reactor and maintain appropriate gaps between the blocks, and then introduce SO2 gas until the reaction is completed. The wet method is to add soda ash to the sodium bisulfite solution, which will generate a suspension of sodium sulfite, and then continue to introduce SO2 gas to produce sodium metabisulfite crystals.

[0003] A large amount of carbon dioxide gas is produced in the process of producing sodium metabisulfite. However, since the preparation of sodium metabisulfite requires the assistance of sulfur dioxide gas, a certain amount of sulfur dioxide is mixed in the carbon dioxide gas. Therefore, desulfurization is required in the process of carbon dioxide recovery.

[0004] When desulfurizing, the existing carbon dioxide recovery device generally installs a spray device on the top of the treatment box, an air inlet is set on one side of the treatment box, an air outlet is set on the other side, and a fan is set at the air outlet. When the fan is started, carbon dioxide can enter through the air inlet and be discharged through the air outlet. When the carbon dioxide passes through the treatment box, the spray device sprays a desulfurizer to desulfurize the carbon dioxide. However, since the gas flows by suction through the fan, the gas flows faster in the treatment box and the gas stays in the treatment box for a shorter time, which may lead to incomplete treatment of the carbon dioxide in the carbon dioxide and affect the quality of recovery.

[0005] Therefore, the utility model designs a carbon dioxide recovery device in sodium pyrosulfite production to solve the problems existing in the prior art. Utility Model Content

[0006] The utility model aims to provide a carbon dioxide recovery device in the production of sodium pyrosulfite to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for recovering carbon dioxide in the production of sodium metabisulfite, comprising: a treatment box, an air inlet pipe is arranged above one side of the treatment box, an air outlet is arranged below the other side of the treatment box, the bottom of the air outlet is connected to the air outlet pipe, a bracket is installed on the inner wall of the air outlet, a rotating shaft is rotatably installed on the bracket, a fan blade is installed on the side of the rotating shaft close to the treatment box, an upper spray box is installed on the side of the top inner wall of the treatment box close to the air inlet pipe, and a lower spray box is installed on the side of the bottom inner wall of the treatment box close to the air outlet pipe. A treatment box is provided, a plurality of nozzles are arranged on both sides of the upper spray box and the lower spray box, a treatment agent box connected with the upper spray box and the lower spray box is arranged on the top of the treatment box, a stirring mechanism is arranged on the treatment agent box, and a transmission mechanism is arranged on the stirring mechanism, the upper spray box is installed on the side of the top of the treatment box close to the air inlet pipe, and the lower spray box is installed on the side of the inner wall of the bottom of the treatment box close to the air outlet pipe, so that the flow distance of the carbon dioxide gas in the treatment box is increased, the time of the carbon dioxide in the treatment box is increased, the carbon dioxide in the carbon dioxide is treated more thoroughly, and the quality of carbon dioxide recovery is improved.

[0008] Preferably, the stirring mechanism includes a stirring shaft, which is rotatably installed in the middle of the top of the treatment agent box. A plurality of stirring rods are provided below the outer side wall of the stirring shaft. The top of the stirring shaft is connected to the output end of the stirring motor. The stirring motor drives the stirring shaft to rotate, which causes the stirring rods to rotate, thereby mixing and stirring the desulfurizer and a certain proportion of water without manual stirring, thereby improving efficiency.

[0009] Preferably, an L-shaped plate is installed on the top of the treatment agent box, and the top of the stirring motor is fixedly installed with the top inner wall of the L-shaped plate, so that the stirring motor can be easily fixed by the L-shaped plate.

[0010] Preferably, the transmission mechanism includes a connecting rod, which is rotatably installed on one side of the processing box located at the outlet pipe, and a transmission wheel is installed on the top of the connecting rod and above the outer wall of the stirring shaft. The two transmission wheels are driven by belts, and a driving gear is installed at the bottom of the connecting rod. A driven gear meshing with the driving gear is installed on the side of the rotating shaft away from the fan blades. The stirring motor drives the stirring shaft to rotate, and the connecting rod is rotated through the transmission of the transmission wheel and the belt, and then the rotating shaft drives the fan blades to rotate through the meshing of the driving gear and the driven gear, thereby saving the use of one motor and reducing the subsequent maintenance cost of the motor.

[0011] Preferably, one side of the processing box is fixedly mounted on a connecting plate, and the connecting rod is rotatably mounted on the connecting plate via a bearing, and the connecting plate enables the connecting rod to rotate on one side of the processing box.

[0012] Preferably, a feeding port is provided on the top of the treatment agent box, and the feeding port is convenient for adding treatment agent and water.

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

[0014] 1. The utility model arranges an upper spray box and a lower spray box. The upper spray box is installed on the top of the treatment box near the air inlet pipe, and the lower spray box is installed on the bottom inner wall of the treatment box near the outlet pipe. This increases the distance that the carbon dioxide gas flows in the treatment box, increases the time that the carbon dioxide stays in the treatment box, makes the carbon dioxide in the carbon dioxide treatment more thorough, and improves the quality of carbon dioxide recovery.

[0015] 2. The utility model adopts the setting of the stirring mechanism and the transmission mechanism. The stirring motor drives the stirring shaft to rotate, so that the stirring rod rotates to mix the desulfurizer and water evenly, and the efficiency is improved without manual mixing. The stirring shaft drives the connecting rod to rotate through the transmission of the transmission wheel and the belt, and then the rotating shaft drives the fan blades to rotate through the engagement of the driving gear and the driven gear, so that the carbon dioxide gas can be exhausted, which saves the use of a motor and reduces the subsequent maintenance cost of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front cross-sectional view of the utility model;

[0017] Figure 2 It is a rear view schematic diagram of the utility model;

[0018] Figure 3 It is a schematic cross-sectional view of the structure of the punching bag of the utility model;

[0019] Figure 4 This is a schematic diagram of the stirring rod structure of the utility model.

[0020] In the figure: 1. treatment box; 2. air inlet pipe; 3. air outlet tube; 4. air outlet pipe; 5. bracket; 6. rotating shaft; 7. fan blade; 8. upper spray box; 9. lower spray box; 10. nozzle; 11. treatment agent box; 12. feeding port; 13. stirring mechanism; 14. transmission mechanism; 131. stirring shaft; 132. stirring rod; 133. stirring motor; 141. connecting rod; 142. transmission wheel; 143. belt; 144. driving gear; 145. driven gear. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 , the utility model provides an embodiment: a carbon dioxide recovery device in the production of sodium pyrosulfite, comprising: a treatment box 1, an air inlet pipe 2 is arranged above one side of the treatment box 1, an air outlet tube 3 is arranged below the other side of the treatment box 1, the bottom of the air outlet tube 3 is connected with the air outlet pipe 4, a bracket 5 is installed on the inner wall of the air outlet tube 3, a rotating shaft 6 is rotatably installed on the bracket 5, a fan blade 7 is installed on the side of the rotating shaft 6 close to the treatment box 1, an upper spray box 8 is installed on the side of the top inner wall of the treatment box 1 close to the air inlet pipe 2, a lower spray box 9 is installed on the side of the bottom inner wall of the treatment box 1 close to the air outlet tube 3, a plurality of nozzles 10 are arranged on both sides of the upper spray box 8 and the lower spray box 9, a treatment agent box 11 connected with the upper spray box 8 and the lower spray box 9 is arranged on the top of the treatment box 1, a stirring mechanism 13 is arranged on the treatment agent box 11, and a transmission mechanism 14 is arranged on the stirring mechanism 13, and a filter can be arranged in the air inlet pipe 2 to filter out impurity particles in the carbon dioxide.

[0023] See also Figure 1 In this embodiment: the stirring mechanism 13 includes a stirring shaft 131, which is rotatably installed in the middle of the top of the treatment agent box 11, and a plurality of stirring rods 132 are provided below the outer wall of the stirring shaft 131. The top of the stirring shaft 131 is connected to the output end of the stirring motor 133.

[0024] See also Figure 1 In this embodiment, an L-shaped plate is installed on the top of the treatment agent box 11, and the top of the stirring motor 133 is fixedly installed on the top inner wall of the L-shaped plate.

[0025] See also Figure 1-3 In this embodiment: the transmission mechanism 14 includes a connecting rod 141, which is rotatably mounted on one side of the processing box 1 located at the outlet tube 3, and a transmission wheel 142 is installed on the top of the connecting rod 141 and above the outer wall of the stirring shaft 131. The two transmission wheels 142 are driven by a belt 143, and a driving gear 144 is installed at the bottom of the connecting rod 141. A driven gear 145 meshing with the driving gear 144 is installed on the side of the rotating shaft 6 away from the fan blades 7.

[0026] See also Figure 1 In this embodiment: one side of the processing box 1 is fixedly mounted on the connecting plate, and the connecting rod 141 is rotatably mounted on the connecting plate through a bearing.

[0027] See also Figure 1 In this embodiment: a feeding port 12 is provided at the top of the treatment agent box 11, and a sealing cover is rotatably installed on the top of the feeding port to reduce the volatilization of the liquid.

[0028] Working principle: After the desulfurizer enters the treatment agent box 11 through the feed port 12, an appropriate amount of water is added, and the stirring motor 133 is started. The stirring motor 133 drives the stirring shaft 131 to rotate, and the stirring rod 132 can be rotated to stir and mix the desulfurizer and water. While the stirring shaft 131 rotates, the connecting rod 141 is rotated through the transmission of the transmission wheel 142 and the belt 143, and then the rotating shaft 6 is rotated through the meshing of the driving gear 144 and the driven gear 145. The rotating shaft 6 drives the fan blade 7 to rotate, so that the intake pipe 2 generates negative pressure, and the intake pipe 2 is connected with the sodium pyrosulfite preparation. The exhaust port of the reactor in use is connected, so that the gas can be drawn into the treatment box 1, and the desulfurizer in the treatment agent box 11 enters the upper spray box 8 and the lower spray box 9, and is then sprayed out through the nozzle 10 to remove the sulfur dioxide in the carbon dioxide gas, and the carbon dioxide is discharged through the outlet pipe 4 for recovery. By arranging the spray box 8 and the lower spray box 9 up and down, the flow distance of the gas in the treatment box 1 is increased, and the residence time in the treatment box 1 is increased, thereby improving the desulfurization effect. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or 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 shall be included in the protection scope of the present invention.

Claims

1. A carbon dioxide recovery device in the production of sodium metabisulfite, comprising: A treatment box (1), characterized in that: an air inlet pipe (2) is provided above one side of the treatment box (1), an air outlet pipe (3) is provided below the other side of the treatment box (1), the bottom of the air outlet pipe (3) is connected to the air outlet pipe (4), a bracket (5) is installed on the inner wall of the air outlet pipe (3), a rotating shaft (6) is rotatably installed on the bracket (5), a fan blade (7) is installed on the side of the rotating shaft (6) close to the treatment box (1), and the inner wall of the top of the treatment box (1) close to the air inlet pipe (2) An upper spray box (8) is installed on one side of the treatment box (1); a lower spray box (9) is installed on the inner wall of the bottom of the treatment box (1) near the gas outlet tube (3); a plurality of nozzles (10) are provided on both sides of the upper spray box (8) and the lower spray box (9); a treatment agent box (11) connected to the upper spray box (8) and the lower spray box (9) is provided on the top of the treatment box (1); a stirring mechanism (13) is provided on the treatment agent box (11); and a transmission mechanism (14) is provided on the stirring mechanism (13).

2. The carbon dioxide recovery device in sodium pyrosulfite production according to claim 1, characterized in that: The stirring mechanism (13) comprises a stirring shaft (131) which is rotatably mounted at the top middle of the treatment agent box (11). A plurality of stirring rods (132) are arranged below the outer wall of the stirring shaft (131). The top of the stirring shaft (131) is connected to the output end of a stirring motor (133).

3. A carbon dioxide recovery device in sodium pyrosulfite production according to claim 2, characterized in that: An L-shaped plate is installed on the top of the treatment agent box (11), and the top of the stirring motor (133) is fixedly installed on the top inner wall of the L-shaped plate.

4. The carbon dioxide recovery device in sodium pyrosulfite production according to claim 1, characterized in that: The transmission mechanism (14) comprises a connecting rod (141), the connecting rod (141) being rotatably mounted on a side of the processing box (1) located at the outlet tube (3), a transmission wheel (142) being mounted on the top of the connecting rod (141) and above the outer wall of the stirring shaft (131), the two transmission wheels (142) being driven by a belt (143), a driving gear (144) being mounted on the bottom of the connecting rod (141), and a driven gear (145) meshing with the driving gear (144) being mounted on the side of the rotating shaft (6) away from the fan blade (7).

5. A carbon dioxide recovery device in sodium pyrosulfite production according to claim 4, characterized in that: One side of the processing box (1) is fixedly mounted on the connecting plate, and the connecting rod (141) is rotatably mounted on the connecting plate via a bearing.

6. The carbon dioxide recovery device in sodium metabisulfite production according to claim 1, characterized in that: The top of the treatment agent box (11) is provided with a feeding port (12).

Images