A carbon dioxide reflux device

Abstract

This utility model discloses a carbon dioxide reflux device, relating to the field of carbon dioxide preparation technology. It includes a tank with a support frame at the bottom and a sealing cap at the bottom. A condenser is located inside the tank, and a condensation chamber is located inside the condenser. An inlet pipe is located at one end of the condenser, and a reflux pipe is located at the opposite end of the inlet pipe. The inlet and reflux pipes are symmetrically arranged. A collection box is located at the center of the bottom of the condenser. This utility model provides a carbon dioxide reflux device that, by incorporating a condenser, liquefies and condenses some impurities in the raw material gas, thus achieving preliminary purification of the CO2 gas. The collection box facilitates the collection of these impurities, preventing environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide preparation technology, and in particular to a carbon dioxide reflux device. Background Technology

[0002] High-purity carbon dioxide is mainly used in the electronics industry, medical research and clinical diagnosis, as a calibration gas for carbon dioxide lasers and testing instruments, and in the preparation of other special mixed gases. It is also used as a regulator in polyethylene polymerization. Solid carbon dioxide is used as a refrigerant in many industrial processes. Gaseous carbon dioxide is used in carbonized soft drinks, pH control in water treatment processes, chemical processing, food preservation, inert protection in chemical and food processing processes, welding gas, plant growth stimulant, in casting for hardening molds and cores, and in pneumatic devices. It is also used as a diluent for sterilizing gases. Liquid carbon dioxide is used as a refrigerant, for low-temperature testing of aircraft, missiles, and electronic components, for rubber polishing, and for controlling chemical reactions. It can also be used as a fire extinguishing agent.

[0003] In the production process of high-purity liquid CO2, the feed gas contains a large number of impurities in addition to CO2, such as fusel oils, sulfides, and other gases (N2, CO, H2, CH4, etc.). The fusel oils in the feed gas CO2 are mostly oily gases. If these gases undergo subsequent processes such as liquefaction, cryogenic distillation, subcooling, and cold energy recovery, some fusel oils will remain in the final liquefied CO2, affecting the quality of the final product. Moreover, if they are discharged, it will not only affect the environment but also waste resources.

[0004] Therefore, a carbon dioxide reflux device is provided to remove impurities from CO2 feed gas and to initially purify the CO2 feed gas. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a carbon dioxide reflux device, which liquefies and condenses some of the impurity gases in the raw material gas by setting a condenser, so as to achieve preliminary purification of CO2 gas. The collection box is set to facilitate the collection of some impurity gases, thereby avoiding environmental pollution.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a carbon dioxide reflux device, including a tank body, a support frame at the bottom of the tank body, a sealing cover at the bottom of the tank body, and a condenser tank inside the tank body; a condensation box inside the condenser tank, an inlet pipe at one end of the condenser box, and a return pipe at the opposite end of the inlet pipe of the condenser box, the inlet pipe and the return pipe being connected to the condenser box; the other end of the inlet pipe passing through the side of the condenser tank and the tank body, the inlet pipe and the return pipe being symmetrically arranged, and a collection box at the bottom center of the condenser box, the collection box being placed inside the sealing cover, wherein the top of the sealing cover is fixedly connected to the bottom of the condenser tank.

[0007] As a preferred embodiment of the carbon dioxide reflux device of this utility model, wherein: an adsorption tank is provided on the inlet pipe, the adsorption tank is located between the top of the condenser and the top of the inlet pipe, and the inlet pipe is connected to the adsorption tank; a flange is provided on one end of the inlet pipe located on the outside of the tank body, and a flange is also provided on one end of the reflux pipe located on the outside of the tank body.

[0008] In a preferred embodiment of the carbon dioxide reflux device of this utility model, the sealing cover is provided with a connecting pipe, the top of the connecting pipe extends into the inside of the sealing cover, the connecting pipe passes through the sealing cover, and one end of the connecting pipe on the outside of the tank is fixedly connected to the cooler.

[0009] In a preferred embodiment of the carbon dioxide reflux device of this utility model, the condenser box is a hollow cuboid or elliptical structure, the inner wall of the condenser box is equipped with a carbon dioxide concentration sensor, and the bottom of the condenser box is connected to the collection box through a conduit.

[0010] In a preferred embodiment of the carbon dioxide reflux device described in this utility model, an electromagnetic valve is provided at the conduit.

[0011] In a preferred embodiment of the carbon dioxide reflux device of this utility model, the collection box and the condensation box are sealed together, and the collection box and the condensation box are connected internally.

[0012] In a preferred embodiment of the carbon dioxide reflux device described in this utility model, the connecting pipe is sealed to the sealing cap, and the inlet pipe and the reflux pipe are sealed to the side wall of the condenser.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides a carbon dioxide reflux device, which liquefies and condenses some of the impurity gases in the raw material gas by setting a condenser, thereby achieving preliminary purification of CO2 gas.

[0015] 2. This utility model provides a carbon dioxide reflux device, which facilitates the collection of some impurity gases by setting up a collection box, thereby avoiding environmental pollution.

[0016] 3. This utility model provides a carbon dioxide reflux device, which uses a carbon dioxide concentration sensor installed on the inner wall of the condenser to detect the carbon dioxide content in the condenser, and controls the opening and closing of the solenoid valve to move the liquefied impurity gas into the collection box. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of a carbon dioxide reflux device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the condenser of a carbon dioxide reflux device according to this utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the internal structure of the condenser of a carbon dioxide reflux device according to this utility model. Figure 2 .

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram, 1. Tank body; 11. Support frame; 12. Inlet pipe; 13. Return pipe; 14. Flange; 15. Sealing cover; 2. Refrigerator; 21. Connecting pipe; 3. Adsorption tank; 4. Condensate tank; 5. Condensation box; 51. Collection box; 52. Solenoid valve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0025] Reference Figure 1-3This utility model provides a carbon dioxide reflux device, comprising a tank body 1, a support frame 11 at the bottom of the tank body 1, a sealing cover 15 at the bottom of the tank body 1, a condenser tank 4 inside the tank body 1, the bottom of the condenser tank 4 being fixedly connected to the bottom of the tank body 1; a condenser box 5 inside the condenser tank 4, the condenser tank 4 being used to cool the condenser box 5, an inlet pipe 12 at one end of the condenser box 5, and a return pipe 13 at the opposite end of the inlet pipe 12, the inlet pipe 12 and the return pipe 13 being connected to the condenser box 5; the other end of the inlet pipe 12 penetrating the side of the condenser tank 4 and the tank body 1, the inlet pipe 12 and the return pipe 13 being symmetrically arranged, a collection box 51 at the bottom center of the condenser box 5, the collection box 51 being placed inside the sealing cover 15, wherein the top of the sealing cover 15 is fixedly connected to or detachably connected to the bottom of the condenser tank 4.

[0026] Specifically, a support frame 11 is provided at the bottom of the tank body 1, and a sealing cover 15 is provided at the bottom of the tank body 1. The support frame 11 supports the tank body 1, and the sealing cover 15 seals the interior of the tank body 1. A condenser tank 4 is provided inside the tank body 1, which divides the internal space of the tank body 1 into different temperature zones. A condenser box 5 is provided inside the condenser tank 4. An air inlet pipe 12 is provided at one end of the condenser box 5, and a return pipe 13 is provided at the opposite end of the air inlet pipe 12. The inlet pipe 12 and the return pipe 13 are symmetrically arranged. The inlet pipe 12 and the return pipe 13 are connected to the condenser 5. The CO2 raw material gas enters the condenser 5 through the inlet pipe 12. The condenser 5 is made of a material with good thermal conductivity to condense some of the impurities in the raw material gas. The CO2 raw material gas after preliminary purification is discharged from the return pipe 13. The other end of the inlet pipe 12 passes through the side of the condenser 4 and the tank body 1, so that the inlet pipe 12 and the return pipe 13 are inside the tank body 1, and the port is located outside the tank body 1.

[0027] An adsorption tank 3 is installed on the air inlet pipe 12. The adsorption tank 3 is located between the top of the condenser tank 4 and the top of the air inlet pipe 12. The air inlet pipe 12 is connected to the adsorption tank 3. A flange 14 is installed on one end of the air inlet pipe 12 outside the tank body 1. A flange 14 is also installed on one end of the return pipe 13 outside the tank body 1.

[0028] Specifically, the adsorption tank 3 adsorbs solid particles in the CO2 feed gas, reducing impurities in the gas entering the condenser tank 4; the flange 14 facilitates the connection of the inlet pipe 12 and the return pipe 13 to external devices.

[0029] A connecting pipe 21 is provided on the sealing cover 15. The heat exchanger at the top of the connecting pipe 21 extends into the interior of the sealing cover 15 to cool the condenser tank 4. The connecting pipe 21 passes through the sealing cover 15, and one end of the connecting pipe 21 on the outside of the tank body 1 is fixedly connected to the cooler 2.

[0030] Specifically, the cooler 2 is connected to the condenser 4 via the connecting pipe 21, thereby driving the cooler 2 to reduce the temperature in the condenser 4.

[0031] The condenser 5 has a hollow elliptical structure. The inner wall of the condenser 5 is equipped with a carbon dioxide concentration sensor, which can monitor the condensation effect. The bottom of the condenser 5 is connected to the collection box through a conduit.

[0032] A solenoid valve 52 is installed at the conduit. Specifically, after passing through the condenser 5, the raw material gas is cooled to a low temperature, causing some impurities in the raw material gas to condense and enter the collection box 51 under the action of gravity. The reflux device also includes a controller, which can receive electrical signals from the carbon dioxide concentration sensor and open and close the solenoid valve 52 to allow liquefied impurity gas to enter the collection box 51, and replace the collection box 51 when its capacity is low.

[0033] The collection box 51 is sealed to the condensation box 5, and the inside of the collection box 51 is connected to the condensation box 5.

[0034] The connecting pipe 21 is sealed to the sealing cap 15, and the air inlet pipe 12 and the return pipe 13 are sealed to the side wall of the condenser 4.

[0035] Specifically, avoid connecting the condenser 4 to the interior of the tank 1, so as to reduce the cooling effect of the condenser 4 on the condenser box 5.

[0036] During use, the cooler 2 first introduces cold air into the connecting pipe 21 to lower the temperature in the condenser 4 to a certain range. Then, the raw material gas is introduced into the condenser 5 through the inlet pipe 12, so that the impurities in the raw material gas are condensed. A carbon dioxide concentration sensor installed on the inner wall of the condenser 5 controls the opening and closing of the solenoid valve 52, and the liquefied impurities are moved into the collection box 51. The initially purified CO2 flows back out from the return pipe 13. After the collection box 51 is full of gas, it can be disassembled and replaced.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A carbon dioxide refluxing apparatus comprising a tank body (1), characterized by: A support frame (11) is provided at the bottom of the tank (1), a sealing cover (15) is provided at the bottom of the tank (1), and a condenser (4) is provided inside the tank (1); a condenser box (5) is provided inside the condenser (4), an air inlet pipe (12) is provided at one end of the condenser box (5), and a return pipe (13) is provided at the opposite end of the air inlet pipe (12) of the condenser box (5), and the air inlet pipe (12) and the return pipe (13) are connected to the condenser box (5); the other end of the air inlet pipe (12) passes through the side of the condenser (4) and the tank (1), and the air inlet pipe (12) and the return pipe (13) are symmetrically arranged. A collection box (51) is provided at the center of the bottom of the condenser box (5), and the collection box (51) is placed inside the sealing cover (15), wherein the top of the sealing cover (15) is fixedly connected to the bottom of the condenser (4).

2. The carbon dioxide refluxing apparatus according to claim 1, wherein: An adsorption tank (3) is provided on the air inlet pipe (12). The adsorption tank (3) is located between the top of the condenser (4) and the top of the air inlet pipe (12). The air inlet pipe (12) is connected to the adsorption tank (3). A flange (14) is provided on one end of the air inlet pipe (12) outside the tank body (1). A flange (14) is also provided on one end of the return pipe (13) outside the tank body (1).

3. The carbon dioxide refluxing apparatus according to claim 1, wherein: A connecting pipe (21) is provided on the sealing cover (15). The top of the connecting pipe (21) extends into the inside of the sealing cover (15). The connecting pipe (21) passes through the sealing cover (15). One end of the connecting pipe (21) on the outside of the tank (1) is fixedly connected to the cooler (2).

4. The carbon dioxide refluxing apparatus according to claim 3, wherein: The condenser (5) is a hollow cuboid or elliptical structure. The inner wall of the condenser (5) is equipped with a carbon dioxide concentration sensor. The bottom of the condenser (5) is connected to the collection box through a conduit.

5. A carbon dioxide refluxing apparatus according to claim 4, wherein: A solenoid valve (52) is provided at the conduit.

6. The carbon dioxide refluxing apparatus according to claim 4, wherein: The collection box (51) is sealed to the condenser box (5), and the collection box (51) is connected to the interior of the condenser box (5).

7. The carbon dioxide refluxing apparatus according to claim 5, wherein: The connecting pipe (21) is sealed to the sealing cap (15), and the air inlet pipe (12) and the return pipe (13) are sealed to the side wall of the condenser (4).

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