Gas-solid transmission reactor capable of being used for various in-situ spectrum characterization in high-pressure environment

Abstract

The utility model discloses a gas-solid transmission reactor capable of being used for various in-situ spectrum characterization in a high-pressure environment, which comprises a reaction tank main body, and the rear end of the reaction tank main body is fixedly connected with a light window with a cooling channel; the rear end of the light window is fixedly connected with the front end of the reaction tank main body through fixing bolts, and the fixing bolts are positioned at four corners of the light window and the reaction tank main body. Through the design of the thickness and the diameter of the rubber gasket and the light window sheet and the use of the polytetrafluoroethylene compression ring on the outer side, higher pressure in the reaction tank can be ensured, the application range of the reactor is expanded, and the reactor can be used for in-situ research on the influence of partial pressure of the reactor on related catalysts and spectral characteristics; a gas inlet and a gas outlet on the reaction tank main body are controlled by a three-way valve and are externally connected with a gas control system capable of controlling flow, so that the pressure can be stably controlled, and the reaction control under dynamic or static conditions is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a gas-solid transmission reactor which can be used for multiple in-situ spectral characterizations under high pressure environments. Background Art

[0002] The existing gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high pressure environment has deficiencies in the control of internal pressure and reaction control under dynamic or static conditions; the spectral adjustment is complex, and the device needs to be modified a lot to adapt to different spectrometers. A Chinese patent discloses a "high temperature and high pressure infrared sample cell" with an application number of "CN201220636369.8". A shell is arranged on the base, and three adjustable feet are arranged at the bottom of the base. A reference block is arranged on one side of the base. A closed water bath cooling chamber and an upper open experimental chamber are arranged in the shell, wherein a water outlet and a water inlet are arranged on one side of the water bath cooling chamber, a straight light-transmitting hole is arranged on the outer wall of the water bath cooling chamber, and an observation window is arranged at the port of the light-transmitting hole. The upper opening of the experimental chamber is covered with a sealing block, and a vacuum exhaust port and a reaction air inlet are arranged on the sealing block, and a thermocouple is embedded inside the sealing block. The utility model is provided with a reference block, which can conveniently and accurately position the light-transmitting hole of the sample pool into the spectrometer, with high experimental repeatability and simple and quick operation; a water bath cooling chamber is provided, with precise temperature control, high adjustability, and wide applicability, which can meet the high-precision constant temperature requirements of analytical instruments. However, the reactor is unstable in pressure control, dynamic reaction control, and static reaction control; the spectrum adjustment is complex, and the adaptability to different spectrometers is insufficient, and the flexibility of the reactor is insufficient. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a gas-solid transmission reactor which can be used for a variety of in-situ spectral characterizations under high pressure environments. The design of the thickness and diameter of the rubber gasket and the light window and the use of the outer polytetrafluoroethylene pressure ring ensure that a higher pressure can be reached inside the reaction pool, thereby expanding the application range of the reactor, and can be used for in-situ research on the influence of the reactor partial pressure on related catalysts and spectral characteristics; the gas inlet and outlet on the reaction pool body are controlled by a three-way valve, and an external gas control system that can control the flow rate is connected, so that the pressure can be stably controlled to achieve reaction control under dynamic or static conditions; the reactor can be applied to infrared spectrometers and ultraviolet spectrometers, and only the reaction window needs to be replaced, without changing the structure of the existing equipment and detection probe, and is easy to use.

[0004] The present utility model also provides a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments, including: a reaction cell main body, and a light window with a cooling channel is fixedly connected to the rear end of the reaction cell main body; a light window, the rear end of the light window is fixedly connected to the front end of the reaction cell main body through fixing bolts, and the fixing bolts are located at the four corners of the light window and the reaction cell main body.

[0005] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, a thermocouple is sleeved on the side end of the reaction cell main body, and the thermocouple is fixedly connected to the reaction cell main body. It is convenient to detect the temperature of the catalyst bed.

[0006] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, a gas outlet is sleeved on the side end of the reaction cell main body, and the gas outlet is fixedly connected to the reaction cell main body. It is convenient for the gas to flow out.

[0007] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, a gas inlet is sleeved on the side end of the reaction cell main body, and the gas inlet is fixedly connected to the reaction cell main body. It is convenient for the gas to flow in.

[0008] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, heating rods are sleeved on the side end of the reaction cell main body, the number of the heating rods is two, and the heating rods are fixedly connected to the reaction cell main body. It is beneficial to accurately control the bed temperature.

[0009] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, a cooling water channel is sleeved on the side end of the light window with a cooling channel and the light window, and the cooling water channel is fixedly connected to the light window with a cooling channel and the light window. It is beneficial for rapid cooling.

[0010] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, a sample rack is fixedly connected in the reaction cell main body through a fixing ring. It is convenient to place the sample.

[0011] For a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments according to the present utility model, a light window piece is fixedly connected in the light window with a cooling channel and the light window through a fixing ring. It is beneficial for in-situ ultraviolet spectral testing.

[0012] Beneficial effects

[0013] 1. Compared with the prior art, for the gas-solid transmission reactor that can be used for various in-situ spectroscopic characterizations under high-pressure environments, the design of the thickness and diameter of the rubber gasket and the light window, as well as the use of the outer polytetrafluoroethylene compression ring, ensure that a higher pressure can be achieved inside the reaction cell, expanding the application range of the reactor and enabling in-situ studies on the effects of the reactor partial pressure on relevant catalysts and spectroscopic properties.

[0014] 2. Compared with the prior art, for the gas-solid transmission reactor that can be used for various in-situ spectroscopic characterizations under high-pressure environments, there is a three-way valve at the gas inlet and outlet of the reaction cell body to control, and an external gas control system that can control the flow rate is connected. Therefore, the pressure can be stably controlled to achieve reaction control under dynamic or static conditions.

[0015] 3. Compared with the prior art, for the gas-solid transmission reactor that can be used for various in-situ spectroscopic characterizations under high-pressure environments, this reactor is applicable to infrared spectrometers and ultraviolet spectrometers. Only the reaction window needs to be replaced, without changing the structure of the existing instrument and the detection probe, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the drawings and embodiments;

[0017] Figure 1 is a schematic structural diagram of a gas-solid transmission reactor of the present invention that can be used for various in-situ spectroscopic characterizations under high-pressure environments;

[0018] Figure 2 is an exploded structural diagram of a gas-solid transmission reactor of the present invention that can be used for various in-situ spectroscopic characterizations under high-pressure environments;

[0019] Figure 3 is a schematic structural diagram of the light window of a gas-solid transmission reactor of the present invention that can be used for various in-situ spectroscopic characterizations under high-pressure environments;

[0020] Figure 4 is a schematic structural diagram of the reaction cell body of a gas-solid transmission reactor of the present invention that can be used for various in-situ spectroscopic characterizations under high-pressure environments.

[0021] LEGEND DESCRIPTION:

[0022] 1. Light window with cooling channels; 2. Cooling water channel; 3. Thermocouple; 4. Gas outlet; 5. Heating rod; 6. Reaction cell body; 7. Gas inlet; 8. Light window; 9. Fixed bolt; 10. Sample rack; 11. Fixed ring; 12. Light window sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0024] Referring to Figures 1-4 , an embodiment of the present utility model provides a gas-solid transmission reactor that can be used for various in-situ spectral characterizations under high-pressure environments, which includes: a reaction cell main body 6. A light window 1 with a cooling channel is fixedly connected to the rear end of the reaction cell main body 6. The light window can be replaced. The window made of quartz can be used for in-situ ultraviolet spectral testing, and the windows made of materials such as potassium bromide, zinc selenide, and calcium fluoride can be used for in-situ infrared spectral testing. A thermocouple 3 is sleeved on the side end of the reaction cell main body 6 for detecting the temperature of the catalyst bed layer. The thermocouple 3 is fixedly connected to the reaction cell main body 6. A gas outlet 4 is sleeved on the side end of the reaction cell main body 6, which tangentially enters the cavity where the sample wafer is located, fills the entire cavity where the sample wafer is located, and then flows out through the gas outlet of the sample holder and the gas outlet on the reaction cell main body. The gas outlet 4 is fixedly connected to the reaction cell main body 6. A gas inlet 7 is sleeved on the side end of the reaction cell main body 6, which tangentially enters the cavity where the sample wafer is located, fills the entire cavity where the sample wafer is located, and then flows out through the gas outlet of the sample holder and the gas outlet on the reaction cell main body. The gas inlet 7 is fixedly connected to the reaction cell main body 6. A heating rod 5 is sleeved on the side end of the reaction cell main body 6 for precisely controlling the bed layer temperature. The number of heating rods 5 is two, and the heating rods 5 are fixedly connected to the reaction cell main body 6. A sample holder 10 is fixedly connected inside the reaction cell main body 6 through a fixing ring 11 for placing samples;

[0025] A light window 8. The rear end of the light window 8 is fixedly connected to the front end of the reaction cell main body 6 through a fixing bolt 9 to form an installation structure of the light window. The fixing bolts 9 are located at the four corners of the light window 8 and the reaction cell main body 6 to form a stable installation layout. A cooling water channel 2 is sleeved on the side ends of the light window 1 with a cooling channel and the light window 8 for water cooling. The cooling water channel 2 is fixedly connected to the light window 1 with a cooling channel and the light window 8. A light window pane 12 is fixedly connected inside the light window 1 with a cooling channel and the light window 8 through a fixing ring 11 for in-situ infrared spectral testing.

[0026] Working principle: There are two through heating rod channels in the upper and lower parts of the main body of the reaction cell, where two heating rods 5 can be placed for heating the catalyst bed; a thermocouple 3 is provided on the front side of the main body of the reaction cell 6, and the end of the thermocouple 3 extends into the surface of the catalyst to detect the temperature of the catalyst bed. The heating rod 5 and the thermocouple 3 are both connected to the DCS temperature control system, enabling precise control of the bed temperature; a cavity is formed at the horizontal central axis position of the main body of the reaction cell 6 for placing a sample piece fixed between the sample holder 10 and the sample fixing ring 11. There are two upper and lower gas channels on the sample holder 10. When the sample holder 10 is placed into the central axis cavity of the main body of the reaction cell, the gas channels on the sample holder 10 communicate with the gas channels on the front and rear wall surfaces of the main body of the reaction cell 6, so that the gaseous reactants enter the gas inlet 7 on the sample holder 10 from the upper gas inlet 7 of the main body of the reaction cell 6, enter the cavity where the sample piece is located tangentially to the sample piece, fill the entire cavity where the sample piece is located, and then flow out through the gas outlet 7 of the sample holder 10 and the gas outlet of the main body of the reaction cell 6; the gas inlet and outlet of the main body of the reaction cell 6 are controlled by a three-way valve and are externally connected to a gas control system that can control the flow rate. Therefore, the pressure can be stably controlled to achieve reaction control under dynamic or static conditions; a light window 8 with a cooling water channel 2 forms a cavity at its central axis position as a light channel, and there is a cooling water channel 2 centered on the central axis inside; there are circular holes for inserting bolts left between the main body of the reaction cell 6 and the light windows 8 with cooling water channels 2 on both sides, evenly distributed around the main body of the reaction cell 6 and the light windows 8 with cooling water channels 2 on both sides to seal the three to achieve the compression seal of the sample cell; the light window piece 12 is fixed to the light window 8 with a cooling water channel 2 by a fixing ring 11, and the light window piece 12 can be replaced. The window piece made of quartz can be used for in-situ ultraviolet spectroscopy testing.

[0027] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A gas-solid transmission reactor that can be used for multiple in-situ spectral characterizations under high pressure, characterized in that: include: A reaction pool body (6), wherein a light window (1) with a cooling channel is fixedly connected to the rear end of the reaction pool body (6); A light window (8), the rear end of which is fixedly connected to the front end of the reaction pool body (6) via fixing bolts (9), and the fixing bolts (9) are located at the four corners of the light window (8) and the reaction pool body (6).

2. A gas-solid transmission reactor for multiple in-situ spectral characterizations under high pressure environment according to claim 1, characterized in that: The side end of the reaction cell body (6) is sleeved with a thermocouple (3), and the thermocouple (3) is fixedly connected to the reaction cell body (6).

3. The gas-solid transmission reactor according to claim 1 that can be used for multiple in-situ spectral characterizations under high pressure environment, characterized in that: The side end of the reaction cell body (6) is sleeved with a gas outlet (4), and the gas outlet (4) is fixedly connected to the reaction cell body (6).

4. The gas-solid transmission reactor for multiple in-situ spectral characterizations under high pressure environment according to claim 1, characterized in that: A gas inlet (7) is sleeved on the side end of the reaction cell body (6), and the gas inlet (7) is fixedly connected to the reaction cell body (6).

5. The gas-solid transmission reactor for multiple in-situ spectral characterizations under high pressure environment according to claim 1, characterized in that: A heating rod (5) is sleeved on the side end of the reaction pool body (6), the number of the heating rods (5) is two, and the heating rods (5) are fixedly connected to the reaction pool body (6).

6. The gas-solid transmission reactor for multiple in-situ spectral characterizations under high pressure environment according to claim 1, characterized in that: The side ends of the light window (1) with a cooling channel and the light window (8) are sleeved with a cooling water channel (2), and the cooling water channel (2) is fixedly connected to the light window (1) with a cooling channel and the light window (8).

7. The gas-solid transmission reactor for multiple in-situ spectral characterizations under high pressure environment according to claim 1, characterized in that: A sample rack (10) is fixedly connected to the reaction pool body (6) via a fixing ring (11).

8. The gas-solid transmission reactor for multiple in-situ spectral characterizations under high pressure environment according to claim 1, characterized in that: The light window (1) with the cooling channel and the light window (8) are fixedly connected with a light window sheet (12) via a fixing ring (11).

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