Reactor suitable for high-pressure environment
By combining a quartz inner liner with a metal cylinder in the chemical reactor and injecting reaction gas in the gap, the problems of reactor contamination and catalysis under high temperature and high pressure were solved, and the safe use of the reactor and the purity of the product under high pressure were achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MERYER TECHNOLOGIES CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-25
AI Technical Summary
Existing chemical reactors are prone to contaminating reaction products or catalyzing undesirable reactions under high temperature and pressure. Quartz tubes are not pressure resistant and cannot be used in high-pressure environments.
A reactor was designed that combines a quartz inner liner with a metal reactor body. By injecting a reaction gas at the same pressure into the gap between the inner liner and the inner wall of the reactor body, the pressure inside and outside the inner liner is balanced, and the reactants are isolated from the metal wall in the high-temperature zone to avoid contamination or catalytic effects.
This technology enables the safe use of the reactor under high pressure, avoids contamination of reaction products and the occurrence of non-ideal reactions, and ensures that the properties of the products are not affected.
Smart Images
Figure CN2025098074_25062026_PF_FP_ABST
Abstract
Description
A reactor suitable for high-pressure environments Technical Field
[0001] This utility model relates to a reactor suitable for experimental apparatus and can be used in a high-pressure environment, belonging to the field of chemical reaction technology. Background Technology
[0002] Chemical reactors are mostly made of metal. For certain special reactions, the metal material can contaminate the reaction products at high temperatures or catalyze undesirable reactions. Therefore, it is necessary to line the metal reactor with a insulating material to prevent these problems. Quartz is commonly used as the insulating material because it is heat-resistant, but quartz tubes are not pressure-resistant and can only be used at normal pressure. Especially in exploratory experiments on experimental setups, the requirement for quartz lining in the reactor is frequent, and the reaction is carried out under specific temperature and pressure conditions. Therefore, designing a reactor suitable for high-pressure environments is essential. Summary of the Invention
[0003] The technical problem to be solved by this invention is to provide a reactor suitable for use in experimental devices under high pressure.
[0004] To address the aforementioned problems, this utility model provides a reactor suitable for high-pressure environments, comprising a reactor cylinder, with an upper flange and a lower flange at the top and bottom of the reactor cylinder, respectively, which mate with an upper head flange and a lower head flange, respectively. The upper head flange has a feed inlet, and the lower head flange has a discharge outlet. An inner liner is provided inside the reactor cylinder, with an upper flange at the top of the liner, positioned between the upper head flange and the upper flange of the reactor cylinder. A reaction gas injection port is provided at the top of the reactor cylinder.
[0005] Preferably, the upper part of the reactor cylinder is symmetrically provided with reaction gas injection holes. A small amount of reactant gas at the same pressure as inside the reactor is continuously injected under flow control, ensuring even pressure distribution inside and outside the inner liner wall. This prevents reaction products from entering the gap between the inner liner and the inner surface of the reactor cylinder, thus avoiding adverse reactions. Since the normal effluent from the reactor also contains some unconverted reactant gas, the injected trace amount of reaction gas will not affect the product properties and will be discharged from the reactor along with the reaction products.
[0006] Preferably, the reaction gas injection port is connected to the reaction gas via a pipeline.
[0007] More preferably, the pipeline is equipped with a manual valve.
[0008] More preferably, the pipeline is equipped with a control valve and a reaction gas injection flow meter. The injection of trace amounts of reaction raw material gas can be automatically controlled or manually adjusted by flow monitoring.
[0009] Preferably, a gap is provided between the inner liner and the inner wall of the reactor cylinder to accommodate the thermal expansion of the metal.
[0010] Preferably, the reactor cylinder is provided with a heating furnace and an insulation layer on its exterior.
[0011] Preferably, an upper sealing ring and a lower sealing ring are respectively provided between the upper flange of the inner liner and the upper flange of the reactor head and the upper flange of the reaction cylinder. The upper flange of the inner liner forms a double-sided seal with the upper flange of the reactor head and the upper flange of the reaction cylinder, making the reactor suitable for operation under high pressure.
[0012] Preferably, the bottom of the inner liner is an open structure that extends to the lower flange of the reaction vessel, ensuring that the entire high-temperature zone is covered by the inner liner.
[0013] Preferably, the reactor shell is made of metal.
[0014] Preferably, the inner liner is made of quartz. Since the metal material of the reactor can contaminate the reaction products or catalyze non-ideal reactions, these problems occur in the high-temperature zone. Once the reaction products exit the catalyst bed and the temperature drops to a certain level, these issues will not occur. Therefore, the reactor must be long enough to ensure that the product temperature has dropped to the required level by the time it reaches the outlet.
[0015] In the high-temperature reaction zone, the inner liner completely isolates the reactants from the metal reactor wall, preventing contamination of the reaction products by the reactor metal or catalytic effects on undesirable reactions. A reaction gas at the same pressure as inside the reactor is injected into the gap between the inner liner and the reactor wall, ensuring balanced pressure inside and outside the liner. This special design allows the reactor to operate under high pressure while ensuring that reaction products do not enter the gap and cause adverse reactions. The lower end of the liner features an open design, further ensuring balanced pressure inside and outside the liner wall, enabling the reactor to operate under high pressure and eliminating the problem of the liner's inability to withstand pressure. Attached Figure Description
[0016] Figure 1 is a schematic diagram of the reactor provided by this utility model that is suitable for high-pressure environments. Detailed Implementation
[0017] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.
[0018] Example
[0019] As shown in Figure 1, this invention provides a reactor suitable for high-pressure environments, comprising a reactor body 1. The reactor body 1 has an upper flange 8 and a lower flange 9 at its top and bottom, respectively, which mate with an upper head flange 4 and a lower head flange 13, respectively. The upper head flange 4 has a feed inlet 3, and the lower head flange 13 has a discharge outlet 12. The reactor body 1 is externally equipped with a heating furnace 15 and an insulation layer 14. An inner liner 2 is provided inside the reactor body 1, with an open structure 11 at its bottom extending to the lower flange 9. An upper flange 6 is located at the top of the inner liner 2, positioned between the upper head flange 4 and the upper flange 8. Symmetrical reaction gas injection holes 16 are provided at the top of the reactor body 1, and these holes are connected to the reaction gas via pipelines 19. The pipeline 19 is equipped with a control valve 17 and a reaction gas injection flow meter 18, or a manual valve. The upper flange 6 of the inner liner is provided with an upper sealing ring 5 and a lower sealing ring 7 between the upper flange 6 of the inner liner and the upper flange 4 of the reactor head and the upper flange 8 of the reaction cylinder, respectively.
[0020] The reactor cylinder 1 is made of metal; the inner liner 2 is made of quartz. A gap is provided between the inner liner 2 and the inner wall of the reactor cylinder 1.
Claims
1. A reactor suitable for high-pressure environments, characterized in that, The reactor includes a reactor body (1), with an upper flange (8) and a lower flange (9) at the top and bottom of the reactor body (1), respectively. The upper flange (8) and the lower flange (9) are respectively matched with the upper head flange (4) and the lower head flange (13) of the reactor. The upper head flange (4) of the reactor is provided with a feed inlet (3), and the lower head flange (13) of the reactor is provided with a discharge outlet (12). The reactor body (1) is provided with an inner liner (2), and the top of the inner liner (2) is provided with an upper flange (6). The upper flange (6) of the inner liner is located between the upper head flange (4) and the upper flange (8) of the reactor body. The upper part of the reactor body (1) is provided with a reaction gas injection hole (16).
2. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, The upper part of the reactor cylinder (1) is symmetrically provided with reaction gas injection holes (16).
3. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, The reaction gas injection port (16) is connected to the reaction gas via a pipeline (19).
4. The reactor suitable for high-pressure environments as described in claim 3, characterized in that, A hand valve is provided on the pipeline (19).
5. The reactor suitable for high-pressure environments as described in claim 3, characterized in that, The pipeline (19) is equipped with a control valve (17) and a reaction gas injection flow meter (18).
6. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, A gap is provided between the inner liner (2) and the inner wall of the reactor cylinder (1).
7. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, The reactor cylinder (1) is equipped with a heating furnace (15) and a heat insulation layer (14) on the outside.
8. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, The upper flange (6) of the inner liner is provided with an upper sealing ring (5) and a lower sealing ring (7) between the upper flange (4) of the reactor and the upper flange (8) of the reactor body.
9. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, The bottom of the inner liner (2) is an open structure (11) that extends to the lower flange (9) of the reaction vessel.
10. The reactor suitable for high-pressure environments as described in claim 1, characterized in that, The reactor cylinder (1) is made of metal; the inner liner (2) is made of quartz.