Liquid-gas separation device for carbon dioxide recovery device

Abstract

The utility model relates to the technical field of carbon dioxide recovery, in particular to a liquid-gas separation device for a carbon dioxide recovery device, which comprises a cyclone separator, a supplementing device and a drainage component. The mixture inlet end is located at one end of the top of the separation bin, the gas outflow pipe is arranged at the top of the separation bin, the water collecting pipe is arranged at the bottom of the separation bin, and the supplementing device comprises a connecting pipe, a gas inlet pipe and air guide blades. Liquid water in carbon dioxide is separated and then heated, so that the carbon dioxide in the water is separated, the utilization rate of the carbon dioxide is guaranteed, the phenomenon that the concentration of the carbon dioxide is reduced due to the fact that air is sucked in through internal negative pressure is effectively avoided, and the supplemented carbon dioxide is guided to play a role in exhausting auxiliary gas.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide recovery, in particular to a liquid-gas separation device for a carbon dioxide recovery device. Background Art

[0002] A large amount of carbon dioxide is generated during the industrial production process. After purification, concentration, compression, distillation and other processes, this carbon dioxide can be reused to create more profits for the company while effectively protecting the environment. In the process of carbon dioxide recycling, the carbon dioxide after washing contains more water vapor, and a large amount of liquid water will precipitate after cooling. Therefore, a liquid-gas separator is needed to separate the water.

[0003] A cyclone separator is a separator with a simple structure and good separation effect. It uses centrifugal force to throw the liquid water in carbon dioxide onto the inner wall of the separator and discharge the gas from the middle, thereby effectively separating the liquid water in carbon dioxide. During this process, there is a certain negative pressure at the bottom of the cyclone separator, which causes some air to be inhaled, affecting the carbon dioxide concentration, and the carbon dioxide dissolved in the water cannot be effectively removed, resulting in the loss of some carbon dioxide. Utility Model Content

[0004] The utility model aims at the defects in the prior art and provides a liquid-gas separation device for a carbon dioxide recovery device.

[0005] The utility model is realized through the following technical solutions:

[0006] A liquid-gas separation device for a carbon dioxide recovery device, comprising a cyclone separator, a replenishing device and a drainage assembly, the cyclone separator comprising a separation chamber, a mixture inlet end, a gas outflow pipe and a water collecting pipe, the mixture inlet end is located at one end of the top of the separation chamber, the gas outflow pipe is arranged at the top of the separation chamber, the water collecting pipe is arranged at the bottom of the separation chamber, the replenishing device comprises a connecting pipe, an air inlet pipe and an air guide vane, the connecting pipe is fixedly connected to the bottom of the water collecting pipe, the air inlet pipe is fixedly connected to the outside of the connecting pipe, the air guide vane is fixedly arranged on the inner side of the top of one end of the air inlet pipe, the drainage assembly comprises a collecting hood, a heating ring, a supporting ring, a mounting frame, a supporting rod, a flow limiting hood and a spring, the collecting hood is fixedly connected to the bottom of the connecting pipe, the heating ring is arranged on the inner side of the top of the collecting hood, the supporting ring and the mounting frame are fixedly arranged at the inner bottom of the collecting hood, the supporting rod is clamped in the middle of the mounting frame, the flow limiting hood is fixedly arranged at the top of the supporting rod, and the spring is sleeved on the outside of the supporting rod.

[0007] In a preferred embodiment of the utility model, the support ring is arranged on the outside of the top of the mounting frame, and the top of the flow limiting cover is in close contact with the bottom of the support ring;

[0008] In a preferred embodiment of the utility model, the spring is located between the mounting frame and the flow limiting cover, and a contact pad is provided at the bottom of the flow limiting cover;

[0009] The contact pad facilitates the spring to effectively support the bottom of the flow limiting cover, and the flow limiting cover prevents liquid water from being directly discharged, resulting in holes at the bottom, thereby preventing air from entering from the bottom and causing a decrease in the carbon dioxide concentration.

[0010] In a preferred embodiment of the utility model, one end of the air inlet pipe penetrates and extends to the inner side of the bottom of the water collecting pipe, and the air guide blade is arranged inside the water collecting pipe;

[0011] The air intake pipe inputs high-concentration carbon dioxide into the cyclone separator, and guides the airflow through the air guide blades so that it spirals up in the same direction as the internal airflow, thereby achieving the effect of auxiliary exhaust.

[0012] In a preferred embodiment of the utility model, the vertical section of the flow limiting cover is a funnel-shaped structure, and a limiting plate is arranged at the bottom end of the bottom support rod, and the upper surface of the limiting plate at the bottom of the support rod contacts the bottom of the mounting frame.

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

[0014] The carbon dioxide recovery device improves the cyclone separator with a liquid-gas separation device, so that the liquid water in the carbon dioxide is separated and then heated, thereby separating the carbon dioxide in the water, ensuring the utilization rate of carbon dioxide, and effectively avoiding the phenomenon of internal negative pressure sucking in air and causing the carbon dioxide concentration to decrease. It plays a role in assisting gas discharge by guiding the replenished carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a liquid-gas separation device for a carbon dioxide recovery device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the replenishing device of the liquid-gas separation device for the carbon dioxide recovery device of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the drainage component of the liquid-gas separation device for the carbon dioxide recovery device of the utility model.

[0018] In the figure: 1. separation chamber; 2. mixture inlet end; 3. gas outflow pipe; 4. water collecting pipe; 5. replenishing device; 51. connecting pipe; 52. air inlet pipe; 53. air guide blade; 6. drainage assembly; 61. collecting cover; 62. heating ring; 63. support ring; 64. mounting frame; 65. support rod; 66. flow limiting cover; 67. spring. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more specific definition of the protection scope of the present invention. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are only for reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, rather than to limit the present invention.

[0020] like Figure 1-3 A liquid-gas separation device for a carbon dioxide recovery device shown in the figure includes a cyclone separator, a replenishing device 5 and a drainage assembly 6. The cyclone separator includes a separation chamber 1, a mixture inlet end 2, a gas outflow pipe 3 and a water collecting pipe 4. The mixture inlet end 2 is located at the top end of the separation chamber 1, the gas outflow pipe 3 is arranged at the top of the separation chamber 1, and the water collecting pipe 4 is arranged at the bottom of the separation chamber 1. The replenishing device 5 includes a connecting pipe 51, an air inlet pipe 52 and an air guide blade 53. The connecting pipe 51 is fixedly connected to the bottom of the water collecting pipe 4, and the air inlet pipe 52 is fixedly connected to the outer side of the connecting pipe 51 The guide blade 53 is fixedly arranged on the inner side of the top of one end of the air inlet pipe 52. The drainage assembly 6 includes a collecting cover 61, a heating ring 62, a supporting ring 63, a mounting frame 64, a supporting rod 65, a flow limiting cover 66 and a spring 67. The collecting cover 61 is fixedly connected to the bottom of the connecting pipe 51. The heating ring 62 is arranged on the inner side of the top of the collecting cover 61. The supporting ring 63 and the mounting frame 64 are fixedly arranged on the inner bottom of the collecting cover 61. The support rod 65 is clamped in the middle of the mounting frame 64. The flow limiting cover 66 is fixedly arranged on the top of the support rod 65. The spring 67 is sleeved on the outside of the support rod 65.

[0021] Specifically, the support ring 63 is arranged on the outer side of the top of the mounting frame 64, the top of the flow limiting cover 66 is in close contact with the bottom of the support ring 63, the spring 67 is located between the mounting frame 64 and the flow limiting cover 66, and a contact pad is arranged at the bottom of the flow limiting cover 66. One end of the air intake pipe 52 passes through and extends to the inner side of the bottom of the water collecting pipe 4. The wind guide blades 53 are arranged inside the water collecting pipe 4. The vertical section of the flow limiting cover 66 is a funnel-shaped structure, and a limiting plate is arranged at the bottom end of the bottom support rod 65. The upper surface of the limiting plate at the bottom of the support rod 65 is in contact with the bottom of the mounting frame 64.

[0022] In this embodiment, high-concentration carbon dioxide gas containing liquefied water is input at a high speed from the mixture inlet end 2. At this time, affected by the internal structure of the separation chamber 1, the gas and the liquefied water mixed therein will move downward in a spiral shape inside. Under the influence of centrifugal force, the higher-quality liquefied water will be thrown to the inner wall of the separation chamber 1 by the centrifugal force and flow downward along the water collecting pipe 4. After reaching the bottom, the carbon dioxide gas will rise along the middle spiral and flow out from the gas outflow pipe 3 for collection, thereby achieving gas-liquid separation.

[0023] Furthermore, when a spiral airflow is generated internally to form a gas-liquid separation process, a certain negative pressure will be generated inside the entire cyclone separator. Normally, part of the air will enter from the bottom of the water collecting pipe 4, thereby causing the internal carbon dioxide concentration to decrease. Therefore, a replenishing device 5 is provided at the bottom of the water collecting pipe 4. Through the external high-concentration carbon dioxide access, dry carbon dioxide is input into the inner side of the bottom of the water collecting pipe 4 through the air inlet pipe 52. The inner side of one end of the air inlet pipe 52 located in the water collecting pipe 4 is provided with a guide blade 53, so that the input gas and the internal gas rotate in the same direction, thereby replenishing the internal air pressure and helping the internal gas to be discharged.

[0024] During this process, the bottom needs to be kept sealed, and the drainage component 6 comes into play at this time. Under the action of the spring 67, the flow limiting cover 66 is pressed against the bottom of the support ring 63, preventing external air from entering, and the liquid water separated by centrifugal force will gather in the collection cover 61. At this time, the heating ring 62 works to heat the liquid water rich in carbon dioxide to form carbonic acid, and then separate the internal carbon dioxide, so as to better achieve the carbon dioxide collection work. When the mass of the liquid water is too large, the spring 67 is compressed and contracted, and the flow limiting cover 66 moves down to allow the liquid water to seep out, achieving the drainage effect while preventing air from entering and affecting the carbon dioxide concentration.

[0025] It should be noted that the parts not covered in the present invention are the same as the prior art or can be implemented by the prior art; the various drives in the present invention can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, motors, etc. in combination with connecting rods, guide rods, etc., and are not limited to the description in the specification and the structures in the drawings.

[0026] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A liquid-gas separation device for a carbon dioxide recovery device, comprising a cyclone separator, a replenishing device (5) and a drainage component (6), characterized in that: The cyclone separator comprises a separation chamber (1), a mixture inlet end (2), a gas outflow pipe (3) and a water collecting pipe (4), wherein the mixture inlet end (2) is located at one end of the top of the separation chamber (1), the gas outflow pipe (3) is arranged at the top of the separation chamber (1), and the water collecting pipe (4) is arranged at the bottom of the separation chamber (1); The replenishing device (5) comprises a connecting pipe (51), an air intake pipe (52) and an air guide blade (53); the connecting pipe (51) is fixedly connected to the bottom of the water collecting pipe (4); the air intake pipe (52) is fixedly connected to the outside of the connecting pipe (51); and the air guide blade (53) is fixedly arranged on the inner side of the top of one end of the air intake pipe (52); The drainage assembly (6) comprises a collecting hood (61), a heating ring (62), a supporting ring (63), a mounting frame (64), a supporting rod (65), a flow limiting hood (66) and a spring (67); the collecting hood (61) is fixedly connected to the bottom of the connecting pipe (51); the heating ring (62) is arranged on the inner side of the top of the collecting hood (61); the supporting ring (63) and the mounting frame (64) are fixedly arranged on the inner bottom of the collecting hood (61); the supporting rod (65) is clamped in the middle of the mounting frame (64); the flow limiting hood (66) is fixedly arranged on the top of the supporting rod (65); and the spring (67) is sleeved on the outer side of the supporting rod (65).

2. The liquid-gas separation device for a carbon dioxide recovery device according to claim 1, characterized in that: The support ring (63) is arranged on the outside of the top of the mounting frame (64), and the top of the flow limiting cover (66) is in close contact with the bottom of the support ring (63).

3. The liquid-gas separation device for a carbon dioxide recovery device according to claim 1, characterized in that: The spring (67) is located between the mounting frame (64) and the flow limiting cover (66), and a contact pad is arranged at the bottom of the flow limiting cover (66).

4. The liquid-gas separation device for a carbon dioxide recovery device according to claim 1, characterized in that: One end of the air inlet pipe (52) penetrates and extends to the inner side of the bottom of the water collecting pipe (4), and the air guide blade (53) is arranged inside the water collecting pipe (4).

5. The liquid-gas separation device for a carbon dioxide recovery device according to claim 1, characterized in that: The flow limiting cover (66) has a funnel-shaped vertical section, and a limiting plate is provided at the bottom end of the bottom support rod (65), and the upper surface of the limiting plate at the bottom of the support rod (65) contacts the bottom of the mounting frame (64).

Images