Graded spiral up-flow reactor for carbon capture of solid-liquid phase change absorbent

Abstract

The utility model relates to a graded spiral up-flow reactor for carbon capture of a solid-liquid phase change absorbent, which comprises a reactor column body, the reactor column body is provided with a thermal insulation layer, the top of the reactor column body is provided with a transverse support, a vertical support is fixed on the transverse support through a bearing, and the vertical support is fixed on the reactor column body. A first-level spiral device, a second-level spiral device, a third-level spiral device and a fourth-level spiral device are sequentially fixed on the vertical support from top to bottom, the adjacent spiral devices are connected through spiral elbows, a feeding port is formed in the top end of the first-level spiral device, and an underflow pipe is connected to the bottom end of the fourth-level spiral device through an adapter elbow.

Description

Technical Field

[0001] This utility model relates to the field of carbon capture technology, specifically a staged spiral upflow reactor for carbon capture using solid-liquid phase change absorbents. Background Technology

[0002] Carbon dioxide, as the most important greenhouse gas, has led to global climate change, which has become a major environmental concern worldwide. A key technology for carbon dioxide control and emission reduction is the separation and recovery of CO2 from concentrated emission sources. Carbon capture technology is a crucial link in this process, and phase change absorbents, which undergo liquid-liquid or liquid-solid phase changes during carbon capture, significantly reduce energy consumption by reducing the volume of regenerated liquid entering the regeneration tower, thus possessing enormous energy-saving potential and considered promising absorbents. Solid-liquid phase change absorbents, in particular, produce solid powder as the product after absorbing carbon dioxide, which can be directly separated by static sedimentation, reducing the phase separation process required with liquid-liquid phase change absorbents. However, the solid products generated during absorption can easily cause equipment blockage in traditional packed absorber towers, leading to slower absorption rates or even absorption blockage. Utility Model Content

[0003] The purpose of this invention is to provide a staged spiral upflow reactor for carbon capture of solid-liquid phase change absorbents. Carbon dioxide flue gas flows in from the bottom, and the absorbent flows in from the top, and absorption occurs through countercurrent flow. The purpose is to address the problem that solid products easily clog traditional packed absorption towers in solid-liquid phase change absorbent carbon capture systems, leading to absorption difficulties. This invention provides a reactor for carbon capture of solid-liquid phase change absorbents.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a staged spiral upflow reactor for carbon capture of solid-liquid phase change absorbents, the reactor comprising a reactor column, the reactor column being provided with a heat insulation layer, a horizontal support being provided at the top of the reactor column, a vertical support being fixed on the horizontal support by bearings, and a first-stage spiral, a second-stage spiral, a third-stage spiral, and a fourth-stage spiral being sequentially fixed on the vertical support from top to bottom, adjacent spirals being connected by spiral elbows, the top end of the first-stage spiral being provided with a feed inlet, and the bottom end of the fourth-stage spiral being connected to an underflow pipe by a transition elbow.

[0005] Preferably, the size of the first-stage auger is smaller than that of the second-stage auger; the size of the second-stage auger is smaller than that of the third-stage auger; and the size of the third-stage auger is smaller than that of the fourth-stage auger.

[0006] Preferably, the reactor column is made of plexiglass.

[0007] Compared with existing technologies, the beneficial effects of this invention are as follows: as the reaction proceeds, the spiral at the bottom of the reactor gradually increases in size, designed to accommodate the increasing amount of solid precipitate. Through the staged design of the spiral, the reactor can effectively disperse solid particles during the reaction process, greatly reducing the risk of solid precipitate clogging the reactor, ensuring the smooth progress of the reaction process, and overcoming the bottleneck of traditional packed tower carbon capture systems where solid products generated by solid-liquid phase change absorbents easily clog the system and affect operation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the staged spiral upflow reactor of this utility model. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. 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 a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0010] The present invention provides a structure for a staged spiral upflow reactor for carbon capture using a solid-liquid phase change absorbent, as shown in the following figure. Figure 1 As shown, the reactor includes a reactor column with an insulation layer 2. A horizontal support 3 is provided at the top of the reactor column, and a vertical support 7 is fixed to the horizontal support 3 by a bearing 1. From top to bottom, a first-stage spiral 5, a second-stage spiral 8, a third-stage spiral 9, and a fourth-stage spiral 10 are fixed to the vertical support 7. Adjacent spirals are connected by spiral bends 6. The top of the first-stage spiral is provided with a feed inlet 4, and the bottom of the fourth-stage spiral 10 is connected to an underflow pipe 12 by a transition bend 11.

[0011] In this embodiment, the spiral stage is divided into four stages, each with different dimensions. The upper spiral has a relatively small diameter to promote reversible dispersion of the fluid and improve absorption efficiency. As the reaction proceeds, the spiral at the bottom of the reactor gradually increases in size to accommodate the increasing amount of solid precipitate. Through the staged spiral design, the reactor can effectively disperse solid particles during the reaction, greatly reducing the risk of solid precipitate clogging the reactor and ensuring smooth reaction. Carbon dioxide flue gas flows in from the underflow pipe 12 at the bottom, and the absorbent flows in from the feed inlet 4 at the top, absorbing the gas in a countercurrent manner.

[0012] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A staged spiral upflow reactor for carbon capture using a solid-liquid phase change absorbent, characterized in that: The reactor includes a reactor column, which is provided with a heat insulation layer (2). A horizontal support (3) is provided at the top of the reactor column, and a vertical support (7) is fixed on the horizontal support (3) by a bearing (1). The vertical support (7) is fixed with a first-stage spiral (5), a second-stage spiral (8), a third-stage spiral (9), and a fourth-stage spiral (10) from top to bottom. Adjacent spirals are connected by spiral bends (6). The top of the first-stage spiral (5) is provided with a feed inlet (4), and the bottom of the fourth-stage spiral (10) is connected to an underflow pipe (12) by a transition bend (11).

2. A staged spiral upflow reactor for carbon capture in a solid-liquid phase change absorbent according to claim 1, characterized in that: The size of the first-stage auger (5) is smaller than that of the second-stage auger (8); the size of the second-stage auger (8) is smaller than that of the third-stage auger (9); and the size of the third-stage auger (9) is smaller than that of the fourth-stage auger (10).

3. A staged spiral upflow reactor for carbon capture in a solid-liquid phase change absorbent according to claim 1, characterized in that: The reactor column is made of plexiglass.

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