CCUS amine method heater
By designing the heating tube to be submerged in the medium in the lower half of the horizontal tank, the problem of short lifespan of CCUS amine process heaters is solved, resulting in improved heating efficiency, stability, and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-06
AI Technical Summary
CCUS amine process heaters have a relatively short service life, often due to the heating tubes being exposed to the gas phase environment for a long time and burning dry, resulting in excessively high surface temperatures and shortening their lifespan.
The heating element is designed to be located in the lower half of the horizontal tank, ensuring that the liquid level always covers the heating element and preventing it from being exposed to the gaseous environment. A U-shaped tube structure and a baffle plate are used for support and flow guidance, increasing the residence time of the medium in the tank.
It extends the service life of the heating element, improves heating efficiency and stability, reduces maintenance costs, and enhances operational safety.
Smart Images
Figure CN223976216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating equipment technology, and in particular to a CCUS amine process heater. Background Technology
[0002] The CCUS amine process heater is a horizontal electric heater used to heat the synthesized amine in the circulating system to about 120°C, releasing carbon dioxide from the amine solution. It plays a crucial role in the amine desorption process.
[0003] The CCUS amine process heater features a horizontal, straight-tube heating element. The working principle of this type of heating element is that heat is generated in a resistance wire by an electric current. This heat is then transferred to the heated medium through heat conduction, convection, and radiation. Specifically, the heating element typically contains a resistance wire and insulating material. When current passes through the resistance wire, heat is generated. This heat is transferred through the insulating material to the tube wall and then to the heated medium, thus achieving the heating effect.
[0004] CCUS amine process heaters experience current imbalances every 4-6 months, leading to abnormal shutdowns of the heating system. Each inspection reveals the cause to be a burnt-out or grounded heating element at the top of the heater. Specifically, during the amine heating process, the rich amine liquid desorbs a large amount of carbon dioxide, which accumulates at the top of the chamber, exposing the upper part of the heating element to the gaseous environment. Prolonged dry burning causes the surface temperature of the heating element to become excessively high, accelerating the aging of the bushing insulation layer, breaking the resistance wire, and ultimately shortening the lifespan of the heating element. On average, one heater fails every 3 months. Utility Model Content
[0005] The purpose of this invention is to provide a CCUS amine process heater to solve the technical problem of short service life in existing CCUS amine process heaters. 。 The various technical effects of the preferred technical solutions among the many technical solutions provided by this utility model are described in detail below.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] This utility model provides a CCUS amine process heater, comprising a horizontal tank, heating tubes, and connectors. The open end of the horizontal tank is connected to the connectors. There are multiple heating tubes, all of which are located in the lower half of the horizontal tank. The length direction of the heating tubes is consistent with the length direction of the horizontal tank, and the ends of all the heating tubes are connected to the connectors.
[0008] Optionally, the heating tube has a U-shaped tube structure.
[0009] Optionally, the system also includes multiple guide vanes, all of which are fixed to the lower half of the horizontal tank and distributed along the length of the horizontal tank.
[0010] Optionally, a first gap exists between the lower end of some of the guide plates and the lower inner wall of the horizontal tank, and a second gap exists between the lower end of the remaining guide plates and the lower inner wall of the horizontal tank, wherein the length of the second gap is greater than the length of the first gap.
[0011] Optionally, the guide plate is provided with multiple through holes, through which the heating tube passes.
[0012] Optionally, an inlet pipe is provided at the other end of the horizontal tank, an outlet pipe is provided at the upper end of the horizontal tank, the outlet pipe is close to the connector, an insulation layer is provided on the inner wall of the horizontal tank, and a support leg and a drain pipe are provided at the lower end of the horizontal tank.
[0013] Optionally, a temperature sensor is provided on the outlet pipe.
[0014] Optionally, the connector includes a junction box, pipe joints, and a connecting flange. A fixed flange is provided at the open side of the horizontal tank. The connecting flange is connected to the fixed flange by bolts. The connecting flange has multiple connecting holes, the number of which corresponds to the number of pipe joints. The end of the heating tube passes through the corresponding connecting hole and is connected to the corresponding pipe joint. The junction box is connected to the side of the connecting flange. All pipe joints are located inside the junction box.
[0015] Optionally, one of the heating tubes is connected to two of the tube fittings.
[0016] Optionally, the junction box is provided with wiring holes and a temperature measuring instrument on its side wall.
[0017] This invention provides a CCUS amine process heater in which all heating tubes are located in the lower half of a horizontal tank. During operation, the liquid level in the medium within the horizontal tank will not be lower than the top surface of the lower half of the tank, ensuring that all heating tubes are immersed in the medium. This prevents the heating tubes from being exposed to the gaseous environment, avoiding prolonged dry burning that could lead to excessively high surface temperatures and shorten the lifespan of the heating tubes. This solves the technical problem of short service life in existing CCUS amine process heaters. 。 Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0019] Figure 1 This is a schematic diagram of the CCUS amine process heater provided in this embodiment of the invention, which lacks a horizontal tank.
[0020] 1. Deflector plate in the diagram;
[0021] 2. Heating element;
[0022] 3. Connecting parts; 31. Junction box; 32. Pipe fitting; 33. Connecting flange; 34. Wiring hole; 35. Temperature measuring instrument. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] This invention provides a CCUS amine process heater, comprising a horizontal tank, heating tubes 2, and connecting parts 3. The open end of the horizontal tank is connected to the connecting parts 3. Multiple heating tubes 2 are located in the lower half of the horizontal tank, with their lengths aligned with the length of the tank. All ends of the heating tubes 2 are connected to the connecting parts 3. In this CCUS amine process heater, all heating tubes 2 are located in the lower half of the horizontal tank. During operation, the liquid level in the medium within the horizontal tank will not be lower than the top surface of the lower half of the tank, ensuring that all heating tubes 2 are immersed in the medium. This prevents the heating tubes 2 from being exposed to the gas phase environment, avoiding prolonged dry burning that could lead to excessively high surface temperatures and shortening their lifespan. This solves the technical problem of short lifespan in existing CCUS amine process heaters.
[0027] As an optional implementation, the heating tube 2 can be a U-shaped tube structure, all the heating tubes 2 will not contact each other, and the arrangement of all the heating tubes 2 in the horizontal tank is not fixed.
[0028] As an optional implementation, it also includes a guide plate 1, and there are multiple guide plates 1. All guide plates 1 are fixed in the lower half of the horizontal tank and are distributed along the length of the horizontal tank. The upper ends of all guide plates 1 are at the same height, and the upper ends of all guide plates 1 are not connected to the upper inner wall of the horizontal tank. The side walls of all guide plates 1 are connected to the inner side wall of the horizontal tank.
[0029] As an optional implementation, a first gap exists between the lower end of some of the guide plates 1 and the lower inner wall of the horizontal tank, and a second gap exists between the lower end of the remaining guide plates 1 and the lower inner wall of the horizontal tank, with the length of the second gap being greater than the length of the first gap, and all the first gaps and all the second gaps are arranged alternately.
[0030] As an optional implementation, the guide plate 1 is provided with multiple through holes through which the heating pipe 2 passes. The guide plate 1 can be used to support the heating pipe 2 and also to slow down the flow of the medium in the horizontal tank.
[0031] As an optional implementation, an inlet pipe is provided on the other side of the horizontal tank, which can be connected to a media replenishment device. The inlet pipe and the fixed flange are located on opposite sides of the horizontal tank. An outlet pipe is provided at the upper end of the horizontal tank, close to connector 3, increasing the distance between the inlet and outlet pipes and thus increasing the heating time of the medium in the horizontal tank. An insulation layer is provided on the inner wall of the horizontal tank to insulate the interior. Support legs and a drain pipe are provided at the lower end of the horizontal tank. The support legs support the horizontal tank in a horizontal configuration, and the drain pipe discharges impurities from the tank. A liquid level detector can be installed inside the horizontal tank. When the liquid level of the medium in the tank falls below a certain level, the liquid level detector sends a working signal to the media replenishment device, causing it to replenish the medium. A thermometer is installed on the outlet pipe to detect the temperature of the gas at the outlet pipe.
[0032] As an optional implementation, the connector 3 includes a junction box 31, a pipe joint 32, and a connecting flange 33. A fixed flange is provided on the open side of the horizontal tank. The connecting flange 33 is connected to the fixed flange by bolts. The connecting flange 33 is provided with multiple connecting holes. The number of connecting holes is the same as the number of pipe joints 32 and they are connected one by one. The end of the heating pipe 2 passes through the corresponding connecting hole and is connected to the corresponding pipe joint 32. The junction box 31 is connected to the side of the connecting flange 33. All pipe joints 32 are located inside the junction box 31. The junction box 31 is used to protect the pipe joints 32.
[0033] As an optional implementation, a heating tube 2 is connected to two pipe connectors 32. One pipe connector 32 is connected to the positive terminal of the power supply via a wire, and the other pipe connector 32 is connected to the negative terminal of the power supply via a wire.
[0034] As an optional implementation, the junction box 31 is provided with a wiring hole 34 and a thermometer 35 on its side wall. The wiring hole 34 is for easy passage of wires, and the thermometer 35 is used to detect the heating temperature of the heating tube 2.
[0035] Technical Requirements: 1. Heating element 2. Strictly designed, manufactured, and inspected according to JB / T2379-93 standard. CCUS amine process heater conforms to GB3836.1~3-2000 standard, protection level: IP54;
[0036] 2. Rated voltage: 380V; 50Hz; two sets;
[0037] 3. The flange and heating element 2 are made of 316L stainless steel; the junction box is made of 31 carbon steel with 12 U-shaped pins.
[0038] 4. Withstand voltage test: 2000V / min, and withstand 1.0MPa water pressure test, cold insulation resistance greater than 50MΩ.
[0039] 5. Medium: Alkaline solution,
[0040] 6. Design temperature: 200℃
[0041] The performance of the CCUS amine heater using this invention is significantly improved. First, the heating efficiency of the CCUS amine heater is optimized, increasing from the original 50kW to 70kW, resulting in faster heating speed and a more stable heating process.
[0042] Secondly, the service life of the CCUS amine process heater has been extended. Due to the improved structural design of heating tube 2, gas accumulation and dry burning phenomena have been reduced, thus extending the life of the insulation layer and heating wire of heating tube 2.
[0043] Furthermore, the maintenance costs of the heaters have also been reduced. Due to the lower failure rate of the heaters and the extended maintenance cycles, maintenance costs are correspondingly lower.
[0044] Finally, the operational safety of the CCUS amine process heater has been improved. Through improvements in the heater's structural design and operation, its operation is more stable, reducing downtime due to malfunctions and enhancing overall equipment safety.
[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A CCUS amine process heater characterized by, It comprises a horizontal tank body, heating pipes (2) and a connecting piece (3), wherein, The open side end of the horizontal tank body is connected with the connecting piece (3), the number of the heating pipes (2) is multiple, all the heating pipes (2) are located in the lower half area of the horizontal tank body, the length direction of the heating pipes (2) is consistent with the length direction of the horizontal tank body, and the end of all the heating pipes (2) is connected with the connecting piece (3).
2. The CCUS amine process heater of claim 1, wherein, The heating pipe (2) is a U-shaped pipe structure.
3. The CCUS amine process heater of claim 1, wherein, It further comprises guide plates (1), the number of the guide plates (1) is multiple, all the guide plates (1) are fixed in the lower half area of the horizontal tank body, and all the guide plates (1) are distributed along the length direction of the horizontal tank body.
4. The CCUS amine process heater of claim 3, wherein, The lower end of part of the guide plates (1) is spaced apart from the lower inner wall of the horizontal tank body by a first interval, the lower end of the remaining guide plates (1) is spaced apart from the lower inner wall of the horizontal tank body by a second interval, and the length of the second interval is greater than the length of the first interval.
5. The CCUS amine process heater of claim 3, wherein, A plurality of through holes are arranged on the guide plate (1), and the heating pipe (2) passes through the through holes.
6. The CCUS amine process heater of claim 1, wherein, The other side end of the horizontal tank body is provided with an inlet pipe, the upper end of the horizontal tank body is provided with an outlet pipe, the outlet pipe is close to the connecting piece (3), the inner wall of the horizontal tank body is provided with a heat preservation layer, and the lower end of the horizontal tank body is provided with a support leg and a blowdown pipe.
7. The CCUS amine process heater of claim 6, wherein, A temperature measuring device is arranged on the outlet pipe.
8. The CCUS amine process heater of claim 1, wherein, The connecting piece (3) comprises a junction box (31), pipe joints (32) and a connecting flange (33), the open side end of the horizontal tank body is provided with a fixed flange, the connecting flange (33) is connected with the fixed flange through bolts, the connecting flange (33) is provided with a plurality of connecting holes, the number of the connecting holes is consistent with the number of the pipe joints (32) and is connected one by one, the end of the heating pipe (2) passes through the corresponding connecting hole and is connected with the corresponding pipe joint (32), the junction box (31) is connected with the side end of the connecting flange (33), and all the pipe joints (32) are located in the junction box (31).
9. The CCUS amine process heater of claim 8, wherein, One heating pipe (2) connects two pipe joints (32).
10. The CCUS amine process heater of claim 8, wherein, The side wall of the junction box (31) is provided with a wiring hole (34) and a temperature measuring instrument (35).