Chemical absorption carbon capture interstage cooling device with temperature detector

Abstract

The utility model relates to the technical field of environmental protection, in particular to a chemical absorption carbon capture interstage cooling device with a temperature detector, which comprises an interstage temperature measuring cylinder and an interstage transit cylinder, and a cooling mechanism for cooling chemical absorption carbon capture gas is mounted between the interstage temperature measuring cylinder and the interstage transit cylinder; the cooling mechanism comprises an air flow pipe which connects the interstage temperature measuring cylinder and the interstage transfer cylinder in a through manner. The outer side of the air flow pipe is sleeved with a cooling pipe in a sealing manner, and cooling liquid flows through the cooling pipe. When the gas temperature threshold value is too high, the system guides the gas to pass through the cooling process through switching of the first electromagnetic valve and the second electromagnetic valve. The cooling liquid in the cooling pipe effectively wraps the airflow pipe, efficient and uniform cooling is achieved, the stability of the cooling effect is ensured, the cooling liquid is recycled in the cooling box, the operation cost is reduced, and the influence on the external environment is reduced. The semiconductor cooler provides refrigeration for the cooling liquid, and continuous low temperature of the cooling liquid is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, and particularly relates to a chemical absorption carbon capture inter-stage cooling device with a temperature detector. Background Art

[0002] The carbon capture technology by chemical absorption of carbon dioxide is currently the most mature post-combustion carbon capture technology, which has a wide range of applications and can be used for carbon capture of flue gas from coal-fired power plants, oil-fired power plants, waste incineration power plants, cement kilns, steel mills, etc. During the process of flue gas decarbonization, carbon dioxide in the flue gas contacts the absorbent countercurrently in the absorption tower, enters the interior of the absorbent liquid film through mass transfer, and reacts with the active components in the absorbent. Organic amines are usually used as the main component of the most widely used mixed amine absorbents and the next-generation absorbents with low energy consumption and less water. When it reacts with carbon dioxide in the absorption tower, heat is released, which will cause the tower temperature of the absorption tower to rise, resulting in too high a temperature of the absorption tower. Too high a tower temperature will affect the further reaction of organic amines with carbon dioxide. Therefore, it is necessary to install a temperature detector at a specific position in the absorption tower for real-time temperature detection, so that the system can accurately judge whether the gas needs to be cooled. Content of the Utility Model

[0003] The purpose of the utility model is to provide a chemical absorption carbon capture inter-stage cooling device with a temperature detector. Through the temperature detector inside the inter-stage temperature measuring cylinder for real-time temperature detection, the system can accurately judge whether the gas needs to be cooled, ensuring the stability and efficiency of the gas in the subsequent treatment process.

[0004] The utility model adopts the following technical scheme: a chemical absorption carbon capture inter-stage cooling device with a temperature detector, including an inter-stage temperature measuring cylinder and an inter-stage transfer cylinder, and a cooling mechanism for cooling the chemical absorption carbon capture gas is installed between the inter-stage temperature measuring cylinder and the inter-stage transfer cylinder; the cooling mechanism includes an air flow pipe that connects the inter-stage temperature measuring cylinder and the inter-stage transfer cylinder in a through manner, a cooling pipe for the circulation of cooling liquid is hermetically sleeved outside the air flow pipe, an inclined angle frame is integrally fixed on the inner wall of the vertical part in the middle of the air flow pipe, the part of the inclined angle frame located inside the air flow pipe is at a 90° inclined angle, and a plurality of heat dissipation fins are integrally fixed at the position of the inclined angle frame located outside the air flow pipe.

[0005] Preferably: a connecting pipe is connected through the inner wall of the top of the cooling pipe, the bottom end of the connecting pipe is connected with a circulation pump, and a water suction pipe located at the inner bottom of the cooling box is arranged at the water suction end of the circulation pump; a gas inlet pipe for gas inlet is connected to the front side of the inter-stage temperature measuring cylinder; a gas outlet pipe for gas outlet is connected to the front side of the inter-stage transfer cylinder.

[0006] Preferably: a vertical through pipe located at the inner top of the cooling box is connected through the inner wall of the bottom end of the cooling pipe.

[0007] Preferably, solenoid valve two is assembled between the air flow pipe, the inter-stage temperature measuring cylinder and the inter-stage transfer cylinder; a condensate pipe for discharging condensate is connected to the bottom end of the air flow pipe in a penetrating manner. The condensate pipe is arranged outside the cooling pipe in a penetrating manner, and a one-way valve is also assembled on the condensate pipe. The condensate pipe is connected to an external sealed container for storing condensate.

[0008] Preferably, a semiconductor refrigerator for refrigerating the cooling liquid is assembled inside the cooling box. The refrigerating end of the semiconductor refrigerator is located inside the cooling box, and the heat dissipation end of the semiconductor refrigerator is located outside the cooling box. A heat dissipation fan for air-cooling heat dissipation is assembled outside the heat dissipation end of the semiconductor refrigerator; a controller is installed on the outer wall of the cooling box; a load-bearing frame is fixedly assembled on the outer wall of the cooling box, and the load-bearing frame is fixedly installed between the inter-stage temperature measuring cylinder and the inter-stage transfer cylinder.

[0009] Preferably, a straight-through pipe is also connected in a penetrating manner to the side surface far from the cooling mechanism between the inter-stage temperature measuring cylinder and the inter-stage transfer cylinder. Solenoid valve one is assembled at the connection between the straight-through pipe and the inter-stage temperature measuring cylinder and the inter-stage transfer cylinder.

[0010] Preferably, a temperature detector for detecting the temperature of the gas flowing inside is installed inside the inter-stage temperature measuring cylinder.

[0011] The technical effects and advantages of the present utility model:

[0012] 1. Through the temperature detector inside the inter-stage temperature measuring cylinder for real-time temperature detection, the system can accurately judge whether the gas needs to be cooled, ensuring the stability and efficiency of the gas in the subsequent processing process.

[0013] 2. When the gas temperature threshold is too high, the system guides the gas through the cooling process by switching solenoid valve one and solenoid valve two. The cooling liquid in the cooling pipe effectively wraps the air flow pipe, realizing efficient and uniform cooling, ensuring the stability of the cooling effect. The cooling liquid circulates inside the cooling box, which not only reduces the operation cost but also reduces the impact on the external environment. The semiconductor refrigerator provides refrigeration for the cooling liquid to ensure the continuous low temperature of the cooling liquid. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the structural schematic diagram of the load-bearing frame in the present utility model;

[0016] Figure 3 is the structural schematic diagram of the cooling mechanism in the present utility model;

[0017] Figure 4It is a schematic structural diagram of the bevel frame in the present utility model;

[0018] Figure 5 It is a schematic structural diagram of the cooling box in the present utility model.

[0019] In the figure:

[0020] 1. Inter-stage temperature measuring cylinder; 2. Inter-stage transfer cylinder;

[0021] 3. Cooling mechanism; 301. Load-bearing frame; 302. Cooling box; 303. Water suction pipe; 304. Circulation pump; 305. Connecting pipe; 306. Cooling pipe; 307. Air flow pipe; 308. Condensate pipe; 309. Check valve; 310. Solenoid valve II; 311. Vertical through pipe; 312. Semiconductor refrigerator; 313. Cooling fan; 314. Controller; 315. Bevel frame; 316. Heat dissipation fins;

[0022] 4. Straight-through pipe; 5. Solenoid valve I; 6. Discharge pipe; 7. Inlet and outlet pipe; 8. Temperature detector. Specific implementation manner

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings and specific implementation manners. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0024] Embodiment, please refer to Figures 1 to 5 , in this embodiment, a chemical absorption carbon capture inter-stage cooling device with a temperature detector is provided, including an inter-stage temperature measuring cylinder 1 and an inter-stage transfer cylinder 2, and a cooling mechanism 3 for cooling the chemical absorption carbon capture gas is installed between the inter-stage temperature measuring cylinder 1 and the inter-stage transfer cylinder 2;

[0025] The cooling mechanism 3 includes an air flow pipe 307 that connects the inter-stage temperature measuring cylinder 1 and the inter-stage transfer cylinder 2 in a through manner. A cooling pipe 306 through which cooling liquid flows is hermetically sleeved outside the air flow pipe 307. An inclined angle frame 315 is integrally fixed on the inner wall of the middle vertical part of the air flow pipe 307. The part of the inclined angle frame 315 located inside the air flow pipe 307 is at a 90° inclined angle, and a plurality of heat dissipation fins 316 are integrally fixed at the position of the inclined angle frame 315 located outside the air flow pipe 307;

[0026] A connecting pipe 305 is connected through the inner wall at the top of the cooling pipe 306. The bottom end of the connecting pipe 305 is connected with a circulation pump 304. A water suction pipe 303 located at the inner bottom of the cooling tank 302 is provided at the water suction end of the circulation pump 304. A gas inlet pipe 7 for gas inlet is connected to the front side of the inter-stage temperature measuring cylinder 1. A gas outlet pipe 6 for gas outlet is connected to the front side of the inter-stage transfer cylinder 2.

[0027] A condensate pipe 308 for discharging condensate is connected through the bottom end of the air flow pipe 307. The condensate pipe 308 is arranged through the outside of the cooling pipe 306, and a one-way valve 309 is also assembled on the condensate pipe 308. The condensate pipe 308 is connected to an external sealed container for storing condensate. A controller 314 is installed on the outer wall of the cooling tank 302. A load-bearing frame 301 is fixedly assembled on the outer wall of the cooling tank 302, and the load-bearing frame 301 is fixedly installed between the inter-stage temperature measuring cylinder 1 and the inter-stage transfer cylinder 2.

[0028] A vertical through pipe 311 located at the inner top of the cooling tank 302 is connected through the inner wall at the bottom end of the cooling pipe 306. Solenoid valves II 310 are assembled between the air flow pipe 307 and the inter-stage temperature measuring cylinder 1 and the inter-stage transfer cylinder 2 respectively.

[0029] A semiconductor refrigerator 312 for cooling the coolant is assembled inside the cooling tank 302. The refrigerating end of the semiconductor refrigerator 312 is located inside the cooling tank 302, and the heat dissipation end of the semiconductor refrigerator 312 is located outside the cooling tank 302. A heat dissipation fan 313 for air-cooling heat dissipation is assembled outside the heat dissipation end of the semiconductor refrigerator 312.

[0030] A straight-through pipe 4 is also connected through the side surface away from the cooling mechanism 3 between the inter-stage temperature measuring cylinder 1 and the inter-stage transfer cylinder 2. Solenoid valves I 5 are assembled at the connection points between the straight-through pipe 4 and the inter-stage temperature measuring cylinder 1 and the inter-stage transfer cylinder 2 respectively. A temperature detector 8 for detecting the temperature of the gas flowing inside is installed inside the inter-stage temperature measuring cylinder 1.

[0031] The working process of the present utility model is as follows:

[0032] Inter-stage cooling treatment is carried out during the treatment of chemically absorbed carbon capture gas.

[0033] The gas to be cooled first enters the inter-stage temperature measuring cylinder 1 through the inlet pipe 7. Through the real-time temperature detection of the temperature detector 8 inside the inter-stage temperature measuring cylinder 1, when the detected temperature is within the normal threshold, the solenoid valve II 310 is in the closed state, and the solenoid valve I 5 is in the open state. The gas at normal temperature can directly enter the inter-stage transfer cylinder 2 through the straight-through pipe 4 and be discharged for subsequent treatment through the outlet pipe 6.

[0034] When the temperature detector 8 inside the inter-stage temperature measuring cylinder 1 detects that the gas temperature threshold is too high, the first solenoid valve 5 is in the closed state, and the second solenoid valve 310 is opened, so that the gas to be cooled passes through the air flow pipe 307 and is discharged into the inter-stage transfer cylinder 2. At the same time, the circulation pump 304 is started. After the circulation pump 304 is started, the cooling liquid inside the cooling tank 302 is pumped into the connecting pipe 305 through the water suction pipe 303, and is discharged into the inner side of the cooling pipe 306. The air flow pipe 307 is wrapped by the cooling liquid to cool the gas inside the air flow pipe 307;

[0035] Moreover, the cooling liquid after cooling the air flow pipe 307 is discharged back into the cooling tank 302 through the vertical pipe 311, so that the cooling liquid circulates inside the cooling tank 302. The cooling liquid inside the cooling tank 302 passes through the semiconductor refrigerator 312, and the semiconductor refrigerator 312 cools the cooling liquid inside the cooling tank 302 through the refrigerating end;

[0036] When the gas is transported to the inside of the inter-stage transfer cylinder 2 through the air flow pipe 307, it will pass through a number of inclined brackets 315 one by one, so that the high-temperature moisture inside the gas condenses into water droplets when it meets the cold, which is convenient for the preliminary treatment of the moisture on the inner wall of the high-temperature gas. The condensed water droplets can be discharged to the external sealed container through the condensate pipe 308.

[0037] In the present invention, unless otherwise clearly specified and limited, for example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A chemical absorption carbon capture interstage cooling device with a temperature detector, characterized in that: It comprises an interstage temperature measuring cylinder (1) and an interstage rotating cylinder (2), and a cooling mechanism (3) for cooling chemical absorption carbon capture gas is installed between the interstage temperature measuring cylinder (1) and the interstage rotating cylinder (2); The cooling mechanism (3) includes an airflow tube (307) that connects the interstage temperature measuring tube (1) and the interstage rotating tube (2); an outer sealing sleeve of the airflow tube (307) is provided with a cooling tube (306) for circulating cooling liquid; an angled bracket (315) is integrally fixed to the inner wall of the vertical portion in the middle of the airflow tube (307); the angled bracket (315) is located at a position on the inner side of the airflow tube (307) at an angle of 90°, and a plurality of heat dissipation fins (316) are integrally fixed to the position of the angled bracket (315) located outside the airflow tube (307).

2. The interstage cooling device for chemical absorption carbon capture with a temperature detector according to claim 1, characterized in that: A connecting pipe (305) is connected to the inner wall of the top of the cooling pipe (306); the bottom end of the connecting pipe (305) is connected to a circulating pump (304); the pumping end of the circulating pump (304) is provided with a pumping pipe (303) located at the bottom of the inner side of the cooling box (302); the front side of the interstage temperature measuring cylinder (1) is connected to a discharge pipe (7) for gas discharge; the front side of the interstage rotating cylinder (2) is connected to a discharge pipe (6) for gas discharge.

3. The inter-stage cooling device for chemical absorption carbon capture with a temperature detector according to claim 2, characterized in that: The inner wall of the bottom end of the cooling pipe (306) is connected through a vertical through pipe (311) located at the top of the inner side of the cooling box (302).

4. The interstage cooling device for chemical absorption carbon capture with a temperature detector according to claim 1, characterized in that: Solenoid valve 2 (310) is installed between the airflow pipe (307) and the interstage temperature measuring cylinder (1) and the interstage transfer cylinder (2); the bottom end of the airflow pipe (307) is connected to a condensate pipe (308) for discharging condensate, the condensate pipe (308) is arranged outside the cooling pipe (306), and a one-way valve (309) is also installed on the condensate pipe (308), and the condensate pipe (308) is connected to an external sealed container for storing condensate.

5. The inter-stage cooling device for chemical absorption carbon capture with a temperature detector according to claim 3, characterized in that: A semiconductor refrigerator (312) for cooling a cooling liquid is installed on the inner side of the cooling box (302), a cooling end of the semiconductor refrigerator (312) is located on the inner side of the cooling box (302), and a heat dissipation end of the semiconductor refrigerator (312) is located on the outer side of the cooling box (302), and a heat dissipation fan (313) for air cooling is installed on the outer side of the heat dissipation end of the semiconductor refrigerator (312); a controller (314) is installed on the outer wall of the cooling box (302); a load-bearing frame (301) is fixedly installed on the outer wall of the cooling box (302), and the load-bearing frame (301) is fixedly installed between the interstage temperature measuring cylinder (1) and the interstage rotating cylinder (2).

6. The inter-stage cooling device for chemical absorption carbon capture with a temperature detector according to claim 1, characterized in that: A straight-through pipe (4) is also connected through a side of the interstage temperature measuring cylinder (1) and the interstage rotating cylinder (2) away from the cooling mechanism (3), and a solenoid valve (5) is installed at the connection between the straight-through pipe (4) and the interstage temperature measuring cylinder (1) and the interstage rotating cylinder (2).

7. The inter-stage cooling device for chemical absorption carbon capture with a temperature detector according to claim 1, characterized in that: A temperature detector (8) for detecting the temperature of the internally circulating gas is installed inside the inter-stage temperature measuring cylinder (1).

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