RTO safe air supply system

Abstract

The utility model discloses an RTO safe air supply system which comprises an air inlet pipe, an emergency cut-off valve is arranged on the air inlet pipe, a main pipe branch is arranged on the air inlet pipe, a fresh air valve is arranged on the main pipe branch, the tail end of the air inlet pipe is connected with an RTO main fan, a pressure transmitter is arranged on a pipeline at the front end of the RTO main fan, the RTO main fan is connected with an RTO furnace, and pressure difference transmitters are arranged on an inlet and an outlet of the RTO furnace. And an outlet of the RTO furnace is connected with an air outlet pipe. The RTO furnace air supply system solves the problems that in the prior art, RTO furnace air supply system equipment is high in operation failure rate, and potential safety hazards exist.

Description

Technical Field

[0001] This utility model belongs to the field of RTO technology, specifically relating to an RTO safety air supply system. Background Technology

[0002] A regenerative thermal oxidizer (RTO) is an energy-saving and environmentally friendly device that heats organic waste gas to over 760°C, causing an oxidation reaction that converts hydrocarbons in the waste gas into CO2 and H2O. This process treats the pollutants in the waste gas and recovers the heat generated during decomposition.

[0003] RTO systems release a large amount of energy during oxidation. Current technology typically places a fan on one side of the RTO furnace. This fan serves both as the main RTO fan for induced draft and as a backflow fan for forced draft. It must regulate the thermal balance and air pressure / volume balance within the RTO furnace while ensuring effective air delivery. In these systems, the energy release from the RTO system can cause injury to personnel or damage to equipment, creating safety hazards. Safety issues primarily relate to fires or explosions from auxiliary fuels or high-VOC exhaust gases. Common causes of accidents include VOC condensation and accumulation in the piping system, unexpected increases in VOC concentration due to process abnormalities, use of substandard or unsafe detectors or safety interlocks, improper placement of detectors, and equipment or instrument malfunctions. Controlling the normal operation of an RTO furnace is difficult; from the perspective of air pressure and volume control, the treatment effect is not always satisfactory. Operation is complex, with a high failure rate, significant safety hazards, high labor costs, and low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a safe air supply system for RTO furnaces, which solves the problems of high failure rate and safety hazards in the existing air supply systems for RTO furnaces.

[0005] The technical solution adopted in this utility model is an RTO safety air supply system, including an air inlet pipe, an emergency shut-off valve installed on the air inlet pipe, a main branch pipe opened on the air inlet pipe, a fresh air valve installed on the main branch pipe, the end of the air inlet pipe connected to the RTO main fan, a pressure transmitter installed on the front pipe of the RTO main fan, the rear end of the RTO main fan connected to the RTO furnace, differential pressure transmitters installed on both the inlet and outlet of the RTO furnace, and the outlet of the RTO furnace connected to the air outlet pipe.

[0006] The feature of this utility model is that,

[0007] The emergency shut-off valve, fresh air valve, pressure transmitter, RTO main fan, differential pressure transmitter, and RTO furnace are all connected to the controller. The controller is used to control the opening and closing of the emergency shut-off valve and fresh air valve, and dynamically adjusts the operating frequency of the RTO main fan based on the air pressure measured by the pressure transmitter. The differential pressure transmitter measures the pressure difference between the inlet and outlet of the RTO furnace to monitor whether the reaction inside the RTO furnace is normal.

[0008] The RTO furnace and the RTO main blower are connected by a pipeline. A venting device is installed on the pipeline. The venting device is located downstream of the differential pressure transmitter and is connected to the controller.

[0009] The venting device uses a rupture disc, which is installed at a certain angle to the horizontal position and faces the non-operating side of the RTO furnace.

[0010] The end of the air inlet pipe is connected to the RTO main fan. The RTO main fan has a connector on the front end of the pipe, which is connected to the end of the air inlet pipe.

[0011] The air inlet duct connects to the waste gas treatment equipment and serves as a channel for organic waste gas.

[0012] The air outlet duct is integrated with the RTO furnace through a welded assembly.

[0013] The beneficial effects of this utility model are as follows: This utility model's RTO safety air supply system features an emergency shut-off valve to allow for the connection or disconnection of waste gas, a fresh air valve to replenish clean air to the RTO furnace, and the RTO main fan to relay the waste gas into the RTO furnace for combustion. A venting device with a rupture disc is installed on the pipeline between the RTO main fan and the RTO furnace to effectively protect the equipment and prevent damage. A differential pressure transmitter measures the pressure difference between the RTO furnace inlet and outlet to prevent damage caused by abnormal pressure differences. This utility model has a reasonable structural design, neat pipeline layout, clean air source, and good waste gas treatment effect. It achieves a balance between air pressure and air volume within the RTO furnace, effectively maintaining long-term system stability, ensuring normal operation of the waste gas treatment system, reducing equipment failures, lowering maintenance costs, saving labor costs, effectively reducing operating costs, improving waste gas treatment efficiency and effect, and is environmentally friendly, economical, and highly efficient, achieving low energy consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the RTO safety air supply system of this utility model;

[0015] Figure 2 This is a schematic diagram of the assembly structure of the venting device of the RTO safety air supply system of this utility model.

[0016] In the diagram, 1. Inlet duct, 2. Emergency shut-off valve, 3. Fresh air valve, 4. Pressure transmitter, 5. RTO main fan, 6. Differential pressure transmitter, 7. Relief device, 8. RTO furnace, 9. Outlet duct. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] This utility model relates to an RTO safety air supply system, such as Figure 1 As shown, the system includes an air inlet duct 1, an emergency shut-off valve 2 installed on the air inlet duct 1, a main branch line on the air inlet duct 1, a fresh air valve 3 installed on the main branch line, an RTO main fan 5 connected to the end of the air inlet duct 1, a pressure transmitter 4 installed on the front pipe of the RTO main fan 5, an RTO furnace 8 connected to the rear pipe of the RTO main fan 5, differential pressure transmitters 6 installed at both the inlet and outlet of the RTO furnace 8, and an air outlet duct 9 connected to the outlet of the RTO furnace 8. The emergency shut-off valve 2, the fresh air valve 3, the pressure transmitter 4, the RTO main fan 5, the differential pressure transmitter 6, and the RTO furnace 8 are each connected to a controller. The controller is used to control the opening and closing of the emergency shut-off valve 2 and the fresh air valve 3, the pressure transmitter 4 measures the airflow pressure, the RTO main fan 5 dynamically adjusts its operating frequency, and the differential pressure transmitter 6 measures the pressure difference between the inlet and outlet of the RTO furnace 8.

[0020] Example 2

[0021] This utility model relates to an RTO (Regenerative Thermal Oxidizer) safety air supply system, comprising an air inlet pipe 1, an emergency shut-off valve 2 installed on the air inlet pipe 1, a main branch pipe on the air inlet pipe 1, a fresh air valve 3 installed on the main branch pipe, an RTO main fan 5 connected to the end of the air inlet pipe 1, a pressure transmitter 4 installed on the front pipe of the RTO main fan 5, an RTO furnace 8 connected to the rear pipe of the RTO main fan 5, differential pressure transmitters 6 installed at both the inlet and outlet of the RTO furnace 8, and an air outlet pipe 9 connected to the outlet of the RTO furnace 8. The emergency shut-off valve 2, the fresh air valve 3, the pressure transmitter 4, the RTO main fan 5, the differential pressure transmitter 6, and the RTO furnace 8 are each connected to a controller. Based on Example 1, in this example, the RTO furnace 8 and the RTO main blower 5 are connected by a pipeline. A venting device 7 is installed on the pipeline. The venting device 7 is located downstream of the differential pressure transmitter 6 on the inlet side of the RTO furnace 8. The venting device 7 is connected to a controller. The differential pressure transmitter 6 detects the pressure difference between the inlet and outlet of the RTO furnace 8, checks the pressure difference inside the RTO furnace 8, and triggers an alarm when an abnormal pressure difference occurs at the inlet and outlet of the RTO furnace 8 to prevent damage caused by abnormal pressure.

[0022] Example 3

[0023] This utility model relates to an RTO safety air supply system, comprising an air inlet pipe 1, an emergency shut-off valve 2 installed on the air inlet pipe 1, a main branch pipe on the air inlet pipe 1, a fresh air valve 3 installed on the main branch pipe, an RTO main fan 5 connected to the end of the air inlet pipe 1, a pressure transmitter 4 installed on the front pipe of the RTO main fan 5, an RTO furnace 8 connected to the rear pipe of the RTO main fan 5, differential pressure transmitters 6 installed at both the inlet and outlet of the RTO furnace 8, and an air outlet pipe 9 connected to the outlet of the RTO furnace 8. The emergency shut-off valve 2, fresh air valve 3, pressure transmitter 4, RTO main fan 5, differential pressure transmitter 6, and RTO furnace 8 are respectively connected to a controller. The controller controls the opening and closing of the emergency shut-off valve 2 and the fresh air valve 3, and the differential pressure transmitter 6 measures the differential pressure between the inlet and outlet of the RTO furnace 8. The RTO furnace 8 and the RTO main fan 5 are connected by a pipe, and a venting device 7 is installed on the pipe. The venting device 7 is located downstream of the differential pressure transmitter 6 and is connected to the controller. Based on embodiment 2, in this embodiment, the venting device 7 uses a rupture disc, such as... Figure 2 As shown, the rupture disc is installed at a certain angle to the horizontal position and faces the non-operating side of the RTO furnace 8; this avoids splashing and injuring the RTO furnace 8 and personnel near the RTO furnace 8; when the pressure difference on both sides of the rupture disc reaches the limit value and causes strength failure or instability, it will quickly rupture or fall off, forming a vent to release gas and avoid overpressure deformation or explosion.

[0024] Example 4

[0025] This utility model relates to an RTO (Regenerative Thermal Oxidizer) safety air supply system, comprising an air inlet pipe 1, an emergency shut-off valve 2 installed on the air inlet pipe 1, a main branch pipe on the air inlet pipe 1, a fresh air valve 3 installed on the main branch pipe, an RTO main fan 5 connected to the end of the air inlet pipe 1, a pressure transmitter 4 installed on the front pipe of the RTO main fan 5, an RTO furnace 8 connected to the rear pipe of the RTO main fan 5, differential pressure transmitters 6 installed at both the inlet and outlet of the RTO furnace 8, and an air outlet pipe 9 connected to the outlet of the RTO furnace 8. The emergency shut-off valve 2, the fresh air valve 3, the pressure transmitter 4, the RTO main fan 5, the differential pressure transmitter 6, and the RTO furnace 8 are respectively connected to a controller. The controller is used to control the opening and closing of the emergency shut-off valve 2 and the fresh air valve 3, and the differential pressure transmitter 6 measures the differential pressure between the inlet and outlet of the RTO furnace 8. The RTO furnace 8 and the RTO main fan 5 are connected by a pipe, and a venting device 7 is installed on the pipe. The venting device 7 is located downstream of the differential pressure transmitter 6 and is connected to the controller. The venting device 7 uses a rupture disc, which is installed at a certain angle to the horizontal position and facing the non-operating side of the RTO furnace 8; this prevents splashing and injury to the RTO furnace 8 and personnel near it; when the pressure difference across the rupture disc reaches its limit and causes strength failure or instability, it will quickly rupture or detach, forming a vent to release gas and prevent overpressure deformation or explosion. Based on embodiment 3, in this embodiment, the tail end of the air inlet pipe 1 is connected to the RTO main fan 5, and a connector is provided on the front end pipe of the RTO main fan 5, which is connected to the tail end of the air inlet pipe 1.

[0026] Example 5

[0027] This utility model relates to an RTO (Regenerative Thermal Oxidizer) safety air supply system, comprising an air inlet pipe 1, an emergency shut-off valve 2 installed on the air inlet pipe 1, a main branch pipe on the air inlet pipe 1, a fresh air valve 3 installed on the main branch pipe, an RTO main fan 5 connected to the end of the air inlet pipe 1, a pressure transmitter 4 installed on the front pipe of the RTO main fan 5, an RTO furnace 8 connected to the rear pipe of the RTO main fan 5, differential pressure transmitters 6 installed at both the inlet and outlet of the RTO furnace 8, and an air outlet pipe 9 connected to the outlet of the RTO furnace 8. The emergency shut-off valve 2, the fresh air valve 3, the pressure transmitter 4, the RTO main fan 5, the differential pressure transmitter 6, and the RTO furnace 8 are each connected to a controller. The controller is used to control the opening and closing of the emergency shut-off valve 2 and the fresh air valve 3, and the differential pressure transmitter 6 measures the differential pressure between the inlet and outlet of the RTO furnace 8. The RTO furnace 8 and the RTO main fan 5 are connected by a pipe, and a venting device 7 is installed on the pipe. The venting device 7 is located downstream of the differential pressure transmitter 6 and is connected to the controller. The venting device 7 uses a rupture disc, which is installed at a certain angle to the horizontal position and facing the non-operating side of the RTO furnace 8; this prevents splashing and injury to the RTO furnace 8 and personnel near it. When the pressure difference across the rupture disc reaches its limit and causes strength failure or instability, it will quickly rupture or detach, forming a vent to release gas and prevent overpressure deformation or explosion. The tail end of the air inlet pipe 1 is connected to the RTO main fan 5. A connector is provided on the front end of the pipe of the RTO main fan 5, which is connected to the tail end of the air inlet pipe 1. Based on embodiment 4, in this embodiment, the air inlet pipe 1 is connected to the waste gas treatment equipment, and the air inlet pipe 1 is an organic waste gas channel.

[0028] Example 6

[0029] This utility model relates to an RTO (Regenerative Thermal Oxidizer) safety air supply system, comprising an air inlet pipe 1, an emergency shut-off valve 2 installed on the air inlet pipe 1, a main branch pipe on the air inlet pipe 1, a fresh air valve 3 installed on the main branch pipe, an RTO main fan 5 connected to the end of the air inlet pipe 1, a pressure transmitter 4 installed on the front pipe of the RTO main fan 5, an RTO furnace 8 connected to the rear pipe of the RTO main fan 5, differential pressure transmitters 6 installed at both the inlet and outlet of the RTO furnace 8, and an air outlet pipe 9 connected to the outlet of the RTO furnace 8. The emergency shut-off valve 2, the fresh air valve 3, the pressure transmitter 4, the RTO main fan 5, the differential pressure transmitter 6, and the RTO furnace 8 are each connected to a controller. The controller is used to control the opening and closing of the emergency shut-off valve 2 and the fresh air valve 3, and the differential pressure transmitter 6 measures the differential pressure between the inlet and outlet of the RTO furnace 8. The RTO furnace 8 and the RTO main fan 5 are connected by a pipe, and a venting device 7 is installed on the pipe. The venting device 7 is located downstream of the differential pressure transmitter 6 and is connected to the controller. The venting device 7 uses a rupture disc, which is installed at a certain angle to the horizontal position and facing the non-operating side of the RTO furnace 8; this prevents splashing and injury to the RTO furnace 8 and personnel near it. When the pressure difference across the rupture disc reaches its limit and causes strength failure or instability, it will quickly rupture or detach, forming a vent to release gas and prevent overpressure deformation or explosion. The end of the inlet pipe 1 is connected to the RTO main fan 5. A connector is provided on the front pipe of the RTO main fan 5, which connects to the end of the inlet pipe 1. The inlet pipe 1 is connected to the waste gas treatment equipment and serves as an organic waste gas passage. Based on embodiment 5, in this embodiment, the outlet pipe 9 is integrally welded to the RTO furnace 8.

[0030] The working principle of this utility model RTO safety air supply system is as follows: the emergency shut-off valve 2 on the inlet pipe 1 is used to connect or disconnect the exhaust gas; the fresh air valve 3 on the main branch of the emergency shut-off valve 2 replenishes clean air to the RTO furnace 8; the RTO main fan 5 relays the exhaust gas into the RTO furnace 8 for combustion; a venting device 7, which uses a rupture disc, is installed on the pipe between the RTO main fan 5 and the RTO furnace 8; the pressure transmitter 4 measures the inlet pressure of the RTO main fan 5 and feeds it back to the controller, which controls the RTO main fan 5 to adjust its frequency; a differential pressure transmitter 6 is installed at the exhaust gas inlet and outlet of the RTO furnace 8 to monitor the pressure difference between the inlet and outlet of the RTO furnace 8 and prevent damage caused by abnormal pressure difference. The RTO furnace 8 is used for the exhaust gas reaction; an outlet pipe 9 is installed after the RTO furnace 8 for gas discharge, thereby overcoming the defects of high failure rate, low reliability and large safety hazards in the prior art, and achieving the advantages of low failure rate, high reliability and small safety hazards.

[0031] The working process of this utility model RTO safety air supply system is as follows: During normal operation, the exhaust gas enters the RTO furnace 8 sequentially through the air inlet pipe 1, emergency shut-off valve 2, pressure transmitter 4, RTO main fan 5, and differential pressure transmitter 6, and is then discharged through the air outlet pipe 9. When it is necessary to cut off the exhaust gas, the exhaust gas can be disconnected by closing the emergency shut-off valve 2. At the same time, the fresh air valve 3 is opened to introduce clean fresh air into the RTO furnace 8, thereby reducing the concentration of exhaust gas in the RTO furnace 8 and cooling the furnace body.

[0032] When the waste gas treatment equipment malfunctions or the waste gas concentration is too high, closing the emergency exhaust valve 2 will disconnect the waste gas supply, preventing organic waste gas from continuing to enter the RTO furnace 8. Simultaneously, opening the fresh air valve 3 will introduce clean fresh air into the RTO furnace 8, reducing the waste gas concentration inside the RTO furnace 8 and cooling it down. If a malfunction in the waste gas treatment equipment causes a sudden increase in pressure, the high-pressure gas will rupture the rupture disc to release the pressure, preventing damage or even explosion to the main RTO fan 5 and the RTO furnace 8.

[0033] This utility model's RTO safety air supply system ensures the normal and continuous operation of the organic waste gas treatment system. The air inlet pipe 1 transports the waste gas to the RTO main fan 5 and then into the RTO furnace 8, where the RTO furnace 8 treats the organic waste gas. The air supply volume is controlled to achieve energy saving and consumption reduction. The venting device 7 releases pressure by bursting after reaching the set pressure value, preventing damage to the RTO furnace 8 due to excessive pressure during operation. The controller achieves efficient and safe monitoring, effectively monitoring and emergency shut-off of potential explosion sources. The venting device 7 uses a rupture disc to ensure the safety of the two main pieces of equipment, the RTO main fan 5 and the RTO furnace 8, improving operating efficiency, system stability, and safety. It is safer and more environmentally friendly, easy to promote and use, and reduces operating costs.

Claims

1. A RTO safe air supply system, characterized in that The application relates to an emergency cut-off valve (2) arranged on an air inlet pipe (1), a main pipe branch provided on the air inlet pipe (1), a fresh air valve (3) arranged on the main pipe branch, a tail end of the air inlet pipe (1) connected with an RTO main air blower (5), a pressure transmitter (4) arranged on a front end pipe of the RTO main air blower (5), the RTO main air blower (5) connected with an RTO furnace (8), differential pressure transmitters (6) arranged on import and export of the RTO furnace (8), and an air outlet pipe (9) connected with an outlet of the RTO furnace (8).

2. The RTO safe plenum system of claim 1, wherein, The emergency cut-off valve (2), the fresh air valve (3), the pressure transmitter (4), the RTO main air blower (5) and the differential pressure transmitters (6) are respectively connected with a controller, the controller is used for controlling opening and closing of the emergency cut-off valve (2) and the fresh air valve (3), measuring pressure of air flow according to the pressure transmitter (4), dynamically adjusting working frequency of the RTO main air blower (5), measuring pressure difference of import and export of the RTO furnace (8) according to the differential pressure transmitters (6), and monitoring whether the reaction in the RTO furnace (8) is normal.

3. The RTO safe draft system of claim 2, wherein, The RTO furnace (8) and the RTO main air blower (5) are connected through a pipe, a relief device (7) is arranged on the pipe, and the relief device (7) is located downstream of the differential pressure transmitters (6).

4. The RTO safe draft system of claim 3, wherein, The relief device (7) is a bursting disc.

5. The RTO safe draft system of claim 4, wherein, The mounting position of the bursting disc is at a certain angle with the horizontal position and faces a non-operation side of the RTO furnace (8).

6. The RTO safe plenum system of claim 5, wherein, The tail end of the air inlet pipe (1) is connected with the RTO main air blower (5), a joint is arranged on a front end pipe of the RTO main air blower (5), and the joint is connected with the tail end of the air inlet pipe (1).

7. The RTO safe draft system of claim 6, wherein, The air inlet pipe (1) is connected with a waste gas treatment device, and the air inlet pipe (1) is an organic waste gas channel.

8. The RTO safe plenum system of claim 7, wherein, The air outlet pipe (9) is integrally welded with the RTO furnace (8).

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