Novel protection type vertical high-temperature furnace device

Abstract

The utility model relates to a novel protection type vertical high-temperature furnace device which comprises a vertical furnace pipe, a protection shell and a heating device, the vertical furnace pipe and the heating device are both arranged inside the protection shell, the heating device is arranged inside or outside the vertical furnace pipe and used for heating the vertical furnace pipe, and a sealing device is arranged at the top end and / or the bottom end of the vertical furnace pipe. The vertical furnace pipe is connected with a production pipeline and provides reaction materials for the vertical furnace pipe, and the production pipeline penetrates through the side wall of the protective shell and then communicates with the interior of the vertical furnace pipe; the protective shell is connected with a gas inlet pipe, the gas inlet pipe inputs protective gas into the protective shell, and the protective gas is located between the protective shell and the vertical furnace pipe; the protective shell is stationary and is kept in a sealed state during production. When the vertical furnace pipe leaks, leaked gas or solid can enter the protective shell and cannot leak to the outside of the protective shell, the vertical furnace pipe is isolated from the external environment, and production safety can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of vertical high-temperature reaction equipment, specifically relating to a novel protective vertical high-temperature furnace device. Background Technology

[0002] Vertical high-temperature furnaces are important industrial production equipment with a wide range of applications, such as fluidized bed furnaces, vertical fixed bed furnaces, vertical furnaces with internal stirring devices, and stirred fluidized bed furnaces. Vertical high-temperature furnaces are typically sealed to prevent the high-temperature, high-pressure internal environment from being affected by the external environment and to prevent the leakage of high-temperature gases. Currently, various chemical reactions can be carried out inside vertical high-temperature furnaces to produce industrial products. For example, hydrogen reduction processes and chemical vapor deposition of carbon nanotubes using methane as a raw material can be performed in fluidized bed furnaces. Methane and hydrogen are extremely flammable and explosive gases, requiring zero leakage control. This places higher demands and new challenges on the design and use of vertical high-temperature furnaces. Utility Model Content

[0003] The technical problem this utility model aims to solve is that if a vertical high-temperature furnace leaks under high temperature and high pressure, the high-temperature and high-pressure gas inside will have a destructive impact on the external environment and seriously endanger the safety of operators. Increasing the daily inspection and maintenance of the sealing device of the vertical high-temperature furnace not only increases costs and shortens the normal working time of the equipment, but also cannot ensure long-term zero-accident production.

[0004] This utility model provides a novel protective vertical high-temperature furnace device, including a vertical furnace liner, a protective shell, and a heating device. The vertical furnace liner and the heating device are both located inside the protective shell. The heating device is located inside or outside the vertical furnace liner to heat the vertical furnace liner. The top and / or bottom of the vertical furnace liner are provided with sealing devices.

[0005] The vertical furnace chamber is connected to a production pipeline that supplies reactants to the vertical furnace chamber. The production pipeline passes through the side wall of the protective shell and connects to the interior of the vertical furnace chamber.

[0006] The protective shell is connected to an air inlet pipe, which supplies protective gas to the inside of the protective shell. The protective gas is located between the protective shell and the vertical furnace chamber. The protective shell remains stationary and is kept sealed during production.

[0007] Optionally, the protective gas is a gas that does not contain oxygen.

[0008] Optionally, the wiring of the heating device and the vertical furnace tube passes through the side wall of the protective shell and is then connected to an external power supply and / or control device to ensure the normal operation of the heating device and the vertical furnace tube.

[0009] A sealing component is installed where the wiring passes through the protective casing to prevent leakage from the casing.

[0010] Optionally, the production pipeline includes a raw material gas pipe, a tail gas pipe, a feeding pipe, and a product pipe. The vertical furnace shell is connected to a gas source device outside the protective shell through the raw material gas pipe, to a tail gas treatment device outside the protective shell through the tail gas pipe, to a feeding device outside the protective shell through the feeding pipe, and to a product collection device outside the protective shell through the product pipe.

[0011] The raw material gas pipe, exhaust gas pipe, feed pipe and product pipe all pass through the side wall of the protective shell, and sealing components are provided at the locations where the production pipes pass through the protective shell to prevent leakage of the protective shell.

[0012] Optionally, the protective shell is also connected to an exhaust pipe, the outlet of which is connected to a tail gas treatment device to output and treat excess gas inside the protective shell; the inlet of the intake pipe is connected to a protective gas source to input protective gas into the protective shell; the intake pipe and the exhaust pipe do not contact the vertical furnace liner.

[0013] Optionally, the protective shell is equipped with a pressure gauge to monitor the air pressure inside the protective shell in real time;

[0014] The pressure of the protective gas inside the protective shell is lower than the pressure inside the vertical furnace liner, creating a gaseous seal between the protective shell and the vertical furnace liner to prevent gas leakage from the furnace liner. The relatively low pressure inside the protective shell makes it easier to ensure a tight seal.

[0015] Optionally, the protective shell is equipped with a pressure gauge, and the gas pressure inside the vertical furnace is not greater than the gas pressure in the space between the protective shell and the vertical furnace, so that the gas inside the vertical furnace cannot leak into the protective shell.

[0016] Optionally, the portion of the gas outlet pipe outside the protective shell is equipped with a gas detection device to detect the composition of the gas output from the protective shell in real time and determine whether there is a gas leak inside the vertical furnace.

[0017] The novel protective vertical high-temperature furnace device described in this utility model has the following beneficial effects:

[0018] (1) The vertical furnace and heating device are enclosed inside the protective shell. The protective shell not only plays a role in heat preservation and protection, but also does not require high sealing of the vertical furnace. Even if the vertical furnace leaks, the leaked gas or solid can enter the protective shell. During production, the protective shell remains sealed, and the gas or solid leaking from the vertical furnace can be kept inside the protective shell and will not leak to the outside of the protective shell. This isolates the vertical furnace from the external environment. The vertical furnace and the protective shell do not come into contact, which can ensure the safety of production in essence.

[0019] (2) The protective shell is stationary and requires virtually no maintenance, allowing for long-term safe use;

[0020] (3) The protective shell and the vertical furnace liner are filled with protective gas to provide a gas-sealed environment for the vertical furnace liner, which can suppress the continued leakage of gas inside the vertical furnace liner. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a novel protective vertical high-temperature furnace device.

[0022] Figure 2 This is a schematic diagram of another novel protective vertical high-temperature furnace device.

[0023] In the attached diagram, 1-vertical furnace chamber, 2-protective shell, 3-heating device, 4-inlet pipe, 5-outlet pipe, 6-raw material gas pipe, 7-tail gas pipe, 8-feeding pipe, 9-product pipe, 10-gas detection device, 11-inspection door, 12-viewing window, 13-pressure gauge. Detailed Implementation

[0024] This embodiment provides a novel protective vertical high-temperature furnace device, such as... Figures 1-2 As shown, it includes a vertical furnace liner 1, a protective shell 2, and a heating device 3. The vertical furnace liner 1 and the heating device 3 are both located inside the protective shell 2. The heating device 3 is located inside or outside the vertical furnace liner 1 to heat the vertical furnace liner 1. The top and / or bottom of the vertical furnace liner 1 are provided with sealing devices.

[0025] The vertical furnace chamber 1 is connected to a production pipeline that provides reactants to the vertical furnace chamber 1. After passing through the side wall of the protective shell 2, the production pipeline communicates with the interior of the vertical furnace chamber 1.

[0026] The protective shell 2 is connected to an air inlet pipe 4, which supplies protective gas to the inside of the protective shell 2. The protective gas is located between the protective shell 2 and the vertical furnace liner 1. The protective shell 2 remains stationary and is kept sealed during production.

[0027] Optionally, the protective gas is an oxygen-free gas, preferably nitrogen, so that even if the high-temperature gas in the vertical furnace 1 leaks into the protective shell 2, combustion or explosion can be avoided, and the leaked gas can be prevented from further leaking to the outside of the protective shell 2.

[0028] Optionally, the bottom of the protective shell 2 is supported by the ground or by a support base to improve the stability of the protective shell 2; when the bottom of the protective shell 2 is supported by the ground, a sealing component is provided at the bottom of the protective shell 2 to maintain the airtightness of the protective shell 2.

[0029] Optionally, the wiring of the heating device 3 and the vertical furnace 1 passes through the side wall of the protective shell 2 and is then connected to an external power supply and / or control device to ensure the normal operation of the heating device 3 and the vertical furnace 1.

[0030] A sealing component is provided at the location where the line passes through the protective housing 2 to prevent leakage from the protective housing 2.

[0031] Optionally, the production pipeline includes a raw material gas pipe 6, a tail gas pipe 7, a feeding pipe 8, and a product pipe 9. The vertical furnace 1 is connected to the gas source device outside the protective shell 2 through the raw material gas pipe 6, to the tail gas treatment device outside the protective shell 2 through the tail gas pipe 7, to the feeding device outside the protective shell 2 through the feeding pipe 8, and to the product collection device outside the protective shell 2 through the product pipe 9.

[0032] Raw material gas pipe 6, exhaust gas pipe 7, feed pipe 8 and product pipe 9 all pass through the side wall of protective shell 2, and sealing components are provided at the locations where the production pipes pass through protective shell 2 to prevent leakage of protective shell 2.

[0033] The protective shell 2 is equipped with sealing components at the locations where the aforementioned lines and production pipelines pass through it, ensuring the airtightness of the protective shell 2. Although there are many locations, the protective shell 2 remains stationary. The sealing components are simple to operate, easy to maintain, and provide excellent sealing performance.

[0034] The shape of the protective shell 2 is not limited, as long as it adapts to the shape of the internal vertical furnace liner 1 and heating device 3. The protective shell 2 is hollow inside, which reduces the weight of the protective shell 2 and saves costs. The interlocking production pipes can enhance the stability of the protective shell 2.

[0035] Optionally, the protective shell 2 is also connected to the exhaust pipe 5, the outlet of the exhaust pipe 5 is connected to the exhaust gas treatment device to output and treat the excess gas inside the protective shell; the inlet of the intake pipe 4 is connected to the protective gas source to input protective gas into the protective shell; the intake pipe 4 and the exhaust pipe 5 do not contact the vertical furnace liner 1.

[0036] Optionally, the protective shell 2 is equipped with a pressure gauge 13 to monitor the air pressure inside the protective shell 2 in real time.

[0037] The pressure of the protective gas inside the protective shell 2 is lower than the pressure inside the vertical furnace liner 1, creating a gas-sealed environment between the protective shell 2 and the vertical furnace liner 1 to prevent gas leakage from the vertical furnace liner 1. The relatively low pressure inside the protective shell 2 makes it easier to ensure a seal for the protective shell 2.

[0038] High-temperature gas or solids leaking from the vertical furnace chamber 1 enter the protective shell 2 and meet with the gas inside. Since there is no oxygen inside the protective shell 2, deflagration or explosion is prevented. When the sealing device of the vertical furnace chamber 1 fails, gas leaks into the protective shell 2. The original gas-sealed environment inside the protective shell 2 will stop leaking when the pressure inside the protective shell 2 rises to the same level as the pressure inside the vertical furnace chamber 1. The pressure inside the vertical furnace chamber 1 is adjusted according to the actual production pressure inside the vertical furnace chamber 1.

[0039] Optionally, the gas pressure inside the vertical furnace 1 is not greater than the gas pressure in the space between the protective shell 2 and the vertical furnace 1, so that the gas inside the vertical furnace 1 cannot leak into the protective shell 2.

[0040] Optionally, the portion of the gas outlet pipe 5 located outside the protective shell 2 is equipped with a gas detection device 10 for real-time detection of the gas composition output from the protective shell 2 to determine whether there is a gas leak inside the vertical furnace liner 1. The type of gas detection device 10 is selected appropriately based on the type of gas inside the vertical furnace liner 1.

[0041] When gas leaks inside the vertical furnace, it can be detected in time by the gas detection device. The high-precision gas detection device has a detection capability at the ppm level and is very sensitive. It can detect the leak in the early stage of a small leak in the vertical furnace and sound an alarm in time, so that dangers and accidents can be dealt with at a very early stage.

[0042] Optionally, the protective shell 2 is provided with an openable and closable inspection door 11 to facilitate the inspection and maintenance of the equipment inside the protective shell 2; the protective shell 2 is provided with a viewing window 12 to facilitate the observation of the working status of the equipment inside the protective shell 2.

[0043] Optionally, the vertical furnace liner 1 may be made of stainless steel or non-metallic refractory material.

[0044] The vertical furnace, heating device, and sealing device described in this utility model are all conventional industrial equipment in the industrial field, such as vertical fluidized beds, vertical fixed beds, and stirred fluidized beds, and can all be improved by applying the technology of this utility model.

Claims

1. A novel protective vertical high-temperature furnace device, characterized in that, It includes a vertical furnace chamber, a protective shell, and a heating device. The vertical furnace chamber and the heating device are both located inside the protective shell. The heating device is located inside or outside the vertical furnace chamber to heat the vertical furnace chamber. The top and / or bottom of the vertical furnace chamber are equipped with sealing devices. The vertical furnace chamber is connected to a production pipeline that supplies reactants to the vertical furnace chamber. The production pipeline passes through the side wall of the protective shell and connects to the interior of the vertical furnace chamber. The protective shell is connected to an air inlet pipe, which supplies protective gas to the inside of the protective shell. The protective gas is located between the protective shell and the vertical furnace chamber. The protective shell remains stationary and is kept sealed during production.

2. The novel protective vertical high-temperature furnace device according to claim 1, characterized in that, The protective gas is a gas that does not contain oxygen.

3. The novel protective vertical high-temperature furnace device according to claim 1, characterized in that, The wiring of the heating device and the vertical furnace passes through the side wall of the protective shell and is then connected to an external power supply and / or control device to ensure the normal operation of the heating device and the vertical furnace. A sealing component is installed where the wiring passes through the protective casing to prevent leakage from the casing.

4. The novel protective vertical high-temperature furnace device according to claim 1, characterized in that, The production pipeline includes a raw material gas pipe, a tail gas pipe, a feeding pipe, and a product pipe. The vertical furnace shell is connected to the gas source device outside the protective shell through the raw material gas pipe, to the tail gas treatment device outside the protective shell through the tail gas pipe, to the feeding device outside the protective shell through the feeding pipe, and to the product collection device outside the protective shell through the product pipe. The raw material gas pipe, exhaust gas pipe, feed pipe and product pipe all pass through the side wall of the protective shell, and sealing components are provided at the locations where the production pipes pass through the protective shell to prevent leakage of the protective shell.

5. The novel protective vertical high-temperature furnace device according to claim 1, characterized in that, The protective shell is also connected to an exhaust pipe, the outlet of which is connected to a tail gas treatment device to output and treat excess gas inside the protective shell; the inlet of the intake pipe is connected to a protective gas source to input protective gas into the protective shell; the intake pipe and the exhaust pipe do not contact the vertical furnace liner.

6. The novel protective vertical high-temperature furnace device according to claim 1, characterized in that, The protective shell is equipped with a pressure gauge to monitor the air pressure inside the protective shell in real time. The pressure of the protective gas inside the protective shell is lower than the pressure inside the vertical furnace liner, forming a gas-sealed environment between the protective shell and the vertical furnace liner to prevent gas leakage from the vertical furnace liner.

7. The novel protective vertical high-temperature furnace device according to claim 1, characterized in that, The protective shell is equipped with a pressure gauge, and the gas pressure inside the vertical furnace is not greater than the gas pressure in the space between the protective shell and the vertical furnace, so that the gas inside the vertical furnace cannot leak into the protective shell.

8. The novel protective vertical high-temperature furnace device according to claim 5, characterized in that, The portion of the gas outlet pipe located outside the protective shell is equipped with a gas detection device, which is used to detect the composition of the gas output from the protective shell in real time and determine whether there is a gas leak inside the vertical furnace.

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