Compact structured photothermal fischer-tropsch synthesis flow phase catalytic reactor

Abstract

The utility model discloses a compact structure type photo-thermal cooperation fischer-tropsch synthesis mobile phase catalytic reactor, include: integrated type photo-thermal conversion and catalytic component, variable diameter straight -through subassembly and cold trap, the upper end of variable diameter straight -through subassembly is located in the inside of integrated type photo-thermal conversion and catalytic component, the upper end of variable diameter straight -through subassembly is connected with the inside of integrated type photo-thermal conversion and catalytic component, the inside of cold trap is provided with cooling cavity, and the lower part of variable diameter straight -through subassembly is located in the inside of cooling cavity, integrated type photo-thermal conversion and catalytic component includes the reaction chamber by double -deck quartz heat preservation layer, and the inside upper end of variable diameter straight -through subassembly is installed photo-thermal catalyst bed, and the inside bottom end of reaction chamber is installed for the concave condensing mirror of focusing solar light to photo-thermal catalyst bed position, the utility model discloses through the synergies of concave condensing mirror condensation, photo-thermal conversion coating and photocatalyst bed, realize the efficient utilization of solar light full spectrum, reduce external energy consumption.

Description

Technical Field

[0001] This invention relates to the field of solar photothermal catalysis and gas mobile phase catalytic reaction technology, and in particular to a compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor. Background Technology

[0002] Fischer-Tropsch synthesis (FTS) is a key process for converting syngas (a mixture of CO and H2) into liquid fuels or multi-carbon chemicals. However, traditional Fischer-Tropsch synthesis typically relies on high temperatures (200–350°C) and high pressures (2–5 MPa), resulting in high energy consumption and economic costs, as well as problems such as uneven thermal management and low energy utilization.

[0003] In recent years, the development of photocatalysis and photothermal catalysis technologies has provided new avenues for reducing energy consumption and improving reaction efficiency. By utilizing the full spectrum of sunlight (ultraviolet, visible, and near-infrared), electron-hole pairs can be generated on the surface of photocatalysts. Simultaneously, light energy is converted into heat energy through the photothermal effect, providing a localized high-temperature environment for the reaction and achieving photo-thermal synergistic catalysis. However, existing photothermal catalytic reactors suffer from problems such as low light absorption efficiency, large heat loss, large reactor volume, and low product collection efficiency, making it difficult to efficiently achieve Fischer-Tropsch synthesis under laboratory or industrial conditions.

[0004] Therefore, developing a compact, high-efficiency photothermal conversion, and efficient collection of multi-carbon products photothermal synergistic gas-flow-phase catalytic reactor has become a key technical issue for realizing solar-driven Fischer-Tropsch synthesis and efficient preparation of multi-carbon products. Utility Model Content

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to propose a compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor that achieves full-spectrum utilization of solar energy through photo-thermal synergistic effects, improves Fischer-Tropsch synthesis efficiency, and enables efficient collection of multi-carbon products.

[0006] According to the present invention, a compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor includes: an integrated photothermal conversion and catalysis component, a variable diameter straight-through component, and a cold trap. The upper end of the variable diameter straight-through component is located inside the integrated photothermal conversion and catalysis component and is connected to the interior of the integrated photothermal conversion and catalysis component. A cooling chamber is formed inside the cold trap, and the lower part of the variable diameter straight-through component is located inside the cooling chamber.

[0007] The integrated photothermal conversion and catalytic assembly includes a reaction chamber composed of a double-layer quartz insulation layer. A quartz sealing flange is installed at the upper end of the reaction chamber, and a through mounting hole is opened in the middle of the lower end of the reaction chamber. The upper end of the variable diameter straight-through assembly is located inside the reaction chamber through the mounting hole and is connected to the interior of the reaction chamber. A photothermal catalyst bed is installed inside the upper end of the variable diameter straight-through assembly. A concave concentrator is installed at the bottom of the interior of the reaction chamber to focus sunlight onto the location of the photothermal catalyst bed. An inlet for introducing reaction gas is opened on the side wall of the reaction chamber.

[0008] Preferably, the variable diameter straight-through assembly includes a first pipe and a second pipe, the lower part of the first pipe is sleeved inside the second pipe, the upper end of the first pipe is connected to the interior of the reaction chamber, and the lower end of the first pipe is connected to the interior of the second pipe.

[0009] Preferably, the cold trap includes a cold trap shell and a cooling cavity. The cold trap shell is located outside the cooling cavity, and the lower part of the second pipe is located inside the cooling cavity. A cooling water jacket is provided inside the cold trap shell, and a cooling water inlet and a cooling water outlet are provided on the side wall of the cold trap shell.

[0010] Preferably, the outer side of the variable diameter straight-through component is provided with a photothermal conversion coating at the location of the photothermal catalyst bed.

[0011] Preferably, an air outlet is provided on the upper part of the side wall of the second pipe.

[0012] The beneficial effects of this utility model are:

[0013] (1) High-efficiency utilization of solar energy through photothermal synergy: Through the synergistic effect of concave concentrating mirror, photothermal conversion coating and photocatalyst bed, the full spectrum of solar light is utilized efficiently, reducing external energy consumption;

[0014] (2) Low heat loss and high thermal stability: The high vacuum design of the double-layer quartz insulation layer effectively reduces heat loss and ensures stable operation of the reactor under high temperature conditions;

[0015] (3) High efficiency in collecting multi-carbon products: The combined design of long quartz tube and cold trap ensures that the multi-carbon products generated by Fischer-Tropsch synthesis can be collected completely, avoiding product loss. Attached Figure Description

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the structure of a compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the quartz sealing flange proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the concave mirror focusing structure proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the cold trap proposed in this utility model.

[0021] In the diagram: 1-Integrated photothermal conversion and catalysis component, 2-Variable diameter straight-through component, 3-Cold trap;

[0022] 11-Quartz sealing flange, 12-Photothermal catalyst bed, 13-Inlet end, 14-Double-layer quartz insulation layer, 15-Concave concentrating mirror;

[0023] 21-Outlet end, 22-Photothermal conversion coating, 23-First pipe, 24-Second pipe;

[0024] 31-Cooling water outlet, 32-Cooling water inlet, 33-Cold trap outer shell;

[0025] 111-Sealing clip, 112-Quartz cover plate, 113-Fluorocarbon ring. Detailed Implementation

[0026] Reference Figure 1 A compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor includes an integrated photothermal conversion and catalysis component 1, a variable diameter straight-through component 2, and a cold trap 3. The upper end of the variable diameter straight-through component 2 is located inside the integrated photothermal conversion and catalysis component 1 and is connected to the interior of the integrated photothermal conversion and catalysis component 1. A cooling chamber is provided inside the cold trap 3, and the lower part of the variable diameter straight-through component 2 is located inside the cooling chamber.

[0027] Obviously, based on the above: the upper end of the variable diameter straight-through component 2 is connected to the integrated photothermal conversion and catalytic component 1, and the lower end extends into the cold trap 3, which tightly couples the catalytic zone and the condensation zone, greatly shortens the transmission path, reduces heat loss and back mixing, and integrates photothermal conversion, catalysis and condensation into one, with fewer sealing points and higher energy efficiency, supporting compact, safe, stable and continuous operation with little or no external heating.

[0028] In this embodiment: the integrated photothermal conversion and catalysis component 1 includes a reaction chamber composed of a double-layer quartz insulation layer 14. A quartz sealing flange 11 is installed at the upper end of the reaction chamber. A through mounting hole is opened in the middle of the lower end of the reaction chamber. The upper end of the variable diameter straight-through component 2 is located inside the reaction chamber through the mounting hole and is connected to the interior of the reaction chamber. A photothermal catalyst bed 12 is installed inside the upper end of the variable diameter straight-through component 2. A concave concentrating lens 15 for focusing sunlight onto the photothermal catalyst bed 12 is installed at the bottom of the interior of the reaction chamber. An inlet end 13 for introducing reaction gas is opened on the side wall of the reaction chamber.

[0029] Obviously, based on the above: the double-layer quartz insulation layer 14 and the quartz sealing flange form a reaction chamber with high airtightness and low heat loss. The bottom concave condenser 15 accurately focuses sunlight onto the photothermal catalyst bed 12 located at the upper end of the variable diameter straight-through component 2, forming a stable high-temperature active zone. The reaction gas reaches the focal photothermal catalyst bed 12 directly from the side wall inlet end 13, and the product is then directionally transported out through the straight-through channel, shortening the residence and heat transfer path, suppressing secondary reactions and heat dissipation.

[0030] Specifically. See reference. Figure 2 The quartz sealing flange 11 consists of a sealing clamp 111, a quartz cover plate 112, and a fluororubber ring 113, ensuring the airtightness of the system and having excellent sunlight transmission performance.

[0031] In this embodiment: Refer to Figure 2 , Figure 3 and Figure 4 The variable diameter straight-through component 2 includes a first pipe 23 and a second pipe 24. The lower part of the first pipe 23 is fitted inside the second pipe 24. The upper end of the first pipe 23 is connected to the interior of the reaction chamber, and the lower end of the first pipe 23 is connected to the interior of the second pipe 24.

[0032] Obviously, based on the above: the reaction products enter the second pipe 24 from the reaction chamber through the first pipe 23 without backflow, the flow path is shorter and straighter, the pressure drop and backmixing are smaller, which is conducive to rapid delivery to the downstream condensation zone and reduces liquid retention.

[0033] In this embodiment: Refer to Figure 4 The cold trap 3 includes a cold trap shell 33 and a cooling cavity. The cold trap shell 33 is located outside the cooling cavity, and the lower part of the second pipe 24 is located inside the cooling cavity. The cold trap shell 33 has a cooling water jacket inside, and a cooling water inlet 32 ​​and a cooling water outlet 31 are provided on the side wall of the cold trap shell 33.

[0034] Obviously, based on the above: a cooling water jacket is provided inside the cold trap shell 33, and it is equipped with inlet and outlet water outlets to establish an adjustable, uniform low temperature field that is thermally isolated from the outside; the lower end of the second pipe 24 extends directly into the cooling chamber, so that the high temperature product flow is immediately quenched at the outlet and the gas-liquid phase change separation is completed.

[0035] In this embodiment: Refer to Figure 3 A photothermal conversion coating 22 is provided on the outer side of the variable diameter straight-through component 2 at the location of the photothermal catalyst bed 12.

[0036] Obviously, based on the above: a photothermal conversion coating 22 is set at the position corresponding to the photothermal catalyst bed 12 to efficiently absorb incident light and convert it into heat on the spot. The energy is directly supplied to the catalytic active area through wall heat conduction, thereby achieving rapid heating and temperature field homogenization, reducing the need for external heating and heat loss.

[0037] In this embodiment: Refer to Figure 1 and Figure 4 An air outlet 21 is provided on the upper side wall of the second pipe 24.

[0038] Obviously, based on the above, an outlet end 21 is provided on the upper part of the side wall of the second pipe 24 to discharge the uncondensed gas and light end products in the cold trap 3 to the upper part, thereby achieving efficient gas-liquid separation from the lower condensate.

[0039] In summary: the reaction gas is input from the inlet end 13, passes through the photothermal catalyst bed 12 to undergo Fischer-Tropsch synthesis, and the generated multi-carbon liquid product enters the bottom of the cold trap 3 through the variable diameter straight-through component 2 and is condensed and collected. The uncondensed gas is discharged from the outlet end 21.

[0040] Under laboratory conditions, this device enables solar-driven Fischer-Tropsch synthesis. At the same syngas inlet rate, the multi-carbon product collection efficiency of this device is significantly higher than that of conventional reactors. Furthermore, due to the synergistic effect of light and heat, no external heating is required, demonstrating significant energy-saving advantages.

Claims

1. A compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor, characterized in that, include: An integrated photothermal conversion and catalysis component (1), a variable diameter straight-through component (2), and a cold trap (3) are provided. The upper end of the variable diameter straight-through component (2) is located inside the integrated photothermal conversion and catalysis component (1), and the upper end of the variable diameter straight-through component (2) is connected to the interior of the integrated photothermal conversion and catalysis component (1). A cooling cavity is provided inside the cold trap (3), and the lower part of the variable diameter straight-through component (2) is located inside the cooling cavity. The integrated photothermal conversion and catalytic component (1) includes a reaction chamber composed of a double-layer quartz insulation layer (14). A quartz sealing flange (11) is installed at the upper end of the reaction chamber. A through mounting hole is opened in the middle of the lower end of the reaction chamber. The upper end of the variable diameter straight-through component (2) is located inside the reaction chamber through the mounting hole and the upper end of the variable diameter straight-through component (2) is connected to the interior of the reaction chamber. A photothermal catalyst bed (12) is installed inside the upper end of the variable diameter straight-through component (2). A concave concentrator (15) for focusing sunlight onto the position of the photothermal catalyst bed (12) is installed at the bottom of the interior of the reaction chamber. An inlet end (13) for introducing reaction gas is opened on the side wall of the reaction chamber.

2. The compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor according to claim 1, characterized in that: The variable diameter straight-through assembly (2) includes a first pipe (23) and a second pipe (24). The lower part of the first pipe (23) is sleeved inside the second pipe (24). The upper end of the first pipe (23) is connected to the interior of the reaction chamber, and the lower end of the first pipe (23) is connected to the interior of the second pipe (24).

3. The compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor according to claim 2, characterized in that: The cold trap (3) includes a cold trap shell (33) and a cooling cavity. The cold trap shell (33) is located outside the cooling cavity, and the lower part of the second pipe (24) is located inside the cooling cavity. The cold trap shell (33) has a cooling water jacket inside, and a cooling water inlet (32) and a cooling water outlet (31) are provided on the side wall of the cold trap shell (33).

4. A compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor according to claim 3, characterized in that: The variable diameter straight-through component (2) has a photothermal conversion coating (22) on its outer side at the location of the photothermal catalyst bed (12).

5. A compact photothermal synergistic Fischer-Tropsch synthesis mobile phase catalytic reactor according to claim 3, characterized in that: The second pipe (24) has an air outlet (21) on the upper side wall.

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