Intelligent residual coal gas recovery system and method for coal-fired glass production line

Abstract

The present application provides a kind of coal gas intelligent recovery system and method of coal-fired glass production line, it is related to glass manufacturing technical field, comprising: when receiving reversing instruction, the clock cover of control coal exchange machine is moved, and make the residual coal gas in branch flue flow into gas storage tank storage by bypass flue, and cut off the communication of coal exchange machine and main flue, then make the gas stored in gas storage tank flow into coal exchange machine after clock cover moves, and when the gas content in bypass flue is higher than content threshold or the temperature in branch flue is higher than temperature threshold, stop the residual coal gas in branch flue from flowing into gas storage tank by bypass flue, and reconnect the communication of coal exchange machine and main flue, finally stop the gas stored in gas storage tank from flowing into coal exchange machine, complete coal exchange machine reversing.The beneficial effect is that the residual coal gas can be collected to the maximum extent during the reversing process of coal exchange machine, and the waste gas utilization efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of glass manufacturing technology, and in particular to an intelligent system and method for recovering residual coal gas from a coal-fired glass production line. Background Technology

[0002] In gas-fired glass melting furnace systems, multiple regenerators and a shared gas flue are located on both sides. These flues operate on an intermittent fire-switching model, meaning that after each fire-switching operation, approximately 600°C of high-temperature gas remains in the flue that was previously in the intake state. This gas is subsequently emitted into the atmosphere along with the furnace's combustion exhaust. This practice not only leads to a significant waste of energy but also causes severe environmental pollution due to incomplete combustion of the gas. While numerous glass manufacturers and design institutes have conducted in-depth research on this issue, unfortunately, no practical solution has yet been implemented in production. It is noteworthy that hundreds of gas-fired glass melting furnaces exist nationwide, and their flue gas emissions have become one of the main sources of air pollution.

[0003] Existing gas recovery devices face several key problems in practical applications: First, leaks exist, preventing the effective capture and return of residual gas to the gas exchanger for reuse. Second, the lack of necessary detection and feedback control mechanisms hinders the realization of intelligent automatic control of the gas recovery system. Third, the design of the gas intake points in the branch flues is unreasonable, and the bypass flues are excessively long, increasing construction costs and failing to substantially improve the efficiency of residual gas recovery. These problems collectively restrict the effective application and development of gas recovery technology. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides an intelligent residual gas recovery system for a coal-fired glass production line, comprising:

[0005] A bypass flue is located on one side of the branch flue at the gas flue outlet connecting to the coal exchange machine;

[0006] The gas storage tank is connected to the gas outlet of the bypass flue and the gas inlet of the glass factory, and is also connected to the gas inlet of the coal exchange machine through a gas outlet pipe.

[0007] A gas recovery device is used to control the movement of the bell of the coal exchanger when a reversing command is received, and to allow residual coal gas in the branch flue to flow into the gas storage tank through the bypass flue for storage, and to disconnect the connection between the coal exchanger and the main flue. Subsequently, after the bell is moved, the coal gas stored in the gas storage tank flows into the coal exchanger. When the gas content in the bypass flue is higher than a content threshold or the temperature in the branch flue is higher than a temperature threshold, the device stops the flow of residual coal gas in the branch flue into the gas storage tank through the bypass flue, and reconnects the coal exchanger and the main flue. Finally, the device stops the flow of coal gas stored in the gas storage tank into the coal exchanger, completing the reversing of the coal exchanger.

[0008] Preferred options also include:

[0009] An air intake valve is provided at the air intake of the bypass flue, and the bypass flue is also equipped with an air intake motor;

[0010] A flue regulating damper is installed in the main flue, and the flue regulating damper is also connected to a damper motor;

[0011] The gas recovery device is electrically connected to the inlet valve, the inlet motor, the flue gas regulating valve, and the gate motor, respectively, and includes:

[0012] The gas collection unit is used to control the opening of the air inlet valve, start the air inlet motor to draw in gas, and start the gate motor to shut off the connection between the gas exchange machine and the main flue by the flue regulating gate, so that the residual gas in the branch flue flows into the gas storage tank for storage through the bypass flue.

[0013] Preferred options also include:

[0014] An exhaust valve is installed in the exhaust pipe, and an exhaust motor is also provided in the exhaust pipe;

[0015] The gas recovery device is electrically connected to the gas outlet valve and the gas outlet motor, respectively, and includes:

[0016] The gas return unit is used to control the gas outlet valve to open and start the gas outlet motor after the bell has moved completely, so that the gas stored in the gas storage tank flows into the coal exchanger and mixes with the fresh gas entering the coal exchanger.

[0017] Preferred options also include:

[0018] A temperature sensor is installed in the branch flue;

[0019] A gas sensor is installed at the air inlet of the bypass flue;

[0020] The gas recovery device is electrically connected to the temperature sensor and the gas sensor respectively, and includes:

[0021] The recovery stop unit is used to control the intake valve to close and stop the intake motor when the gas sensor detects that the carbon monoxide content in the gas is higher than a set content threshold, or when the temperature sensor detects that the temperature in the branch flue is higher than the temperature threshold, so as to stop the residual coal gas in the branch flue from flowing into the coal gas storage tank through the bypass flue. It also controls the flue regulating gate to open to reconnect the coal exchanger and the main flue, and finally stops the coal gas stored in the coal gas storage tank from flowing into the coal exchanger, thus completing the reversing of the coal exchanger.

[0022] Preferred options also include:

[0023] Multiple pressure sensors are respectively installed in the bypass flue and the outlet pipe;

[0024] It also includes an alarm device connected to each of the pressure sensors, used to issue a pressure alarm when the pressure in the bypass flue or the exhaust pipe exceeds the pressure threshold.

[0025] This invention also provides a method for intelligent recovery of residual coal gas in a coal-fired glass production line, applied to the aforementioned intelligent residual coal gas recovery system, comprising:

[0026] Step S1: When the residual gas intelligent recovery system receives the reversing command, it controls the bell of the coal exchange machine to move, so that the residual gas in the branch flue flows into the gas storage tank through the bypass flue for storage.

[0027] In step S2, the residual gas intelligent recovery system disconnects the coal exchange machine from the main flue, and then, after the bell jar moves, the gas stored in the gas storage tank flows into the coal exchange machine.

[0028] Step S3, the residual gas intelligent recovery system determines whether the detected gas content in the bypass flue is higher than the content threshold or whether the detected temperature in the branch flue is higher than the temperature threshold:

[0029] If so, proceed to step S4;

[0030] If not, return to step S2;

[0031] In step S4, the residual gas intelligent recovery system stops the residual gas in the branch flue from flowing into the gas storage tank through the bypass flue, and reconnects the coal exchange machine and the main flue. Finally, it stops the gas stored in the gas storage tank from flowing into the coal exchange machine, thus completing the reversal of the coal exchange machine.

[0032] Preferably, the residual gas intelligent recovery system further includes:

[0033] An air intake valve is provided at the air intake of the bypass flue, and the bypass flue is also equipped with an air intake motor;

[0034] A flue regulating damper is installed in the main flue, and the flue regulating damper is also connected to a damper motor;

[0035] In step S1, when the residual gas intelligent recovery system receives a reversing command, it controls the air intake valve to open, starts the air intake motor to draw in air, and starts the gate motor to shut off the connection between the flue regulating gate and the main flue, so that the residual gas in the branch flue flows into the gas storage tank for storage through the bypass flue.

[0036] Preferably, the residual gas intelligent recovery system further includes:

[0037] An exhaust valve is installed in the exhaust pipe, and an exhaust motor is also provided in the exhaust pipe;

[0038] In step S2, the residual gas intelligent recovery system controls the gas outlet valve to open and starts the gas outlet motor after the bell jar moves, so that the gas stored in the gas storage tank flows into the coal exchanger and mixes with the fresh gas entering the coal exchanger.

[0039] Preferably, the residual gas intelligent recovery system further includes:

[0040] A temperature sensor is installed in the branch flue;

[0041] A gas sensor is installed at the air inlet of the bypass flue;

[0042] In step S3, the residual gas intelligent recovery system determines whether the carbon monoxide content in the gas detected by the gas sensor is higher than a set content threshold, or whether the temperature in the flue gas duct is higher than the temperature threshold.

[0043] If so, proceed to step S4;

[0044] If not, return to step S2.

[0045] The above technical solution has the following advantages or beneficial effects:

[0046] 1) A bypass flue is set up on the side of the branch flue near the coal delivery machine. There are two advantages to setting up a bypass flue in this way: First, the bypass flue is short, which saves construction costs; Second, the bypass flue is set at the end of the residual coal flow path, which can collect all the residual coal gas to the maximum extent.

[0047] 2) Adding a gas storage tank between the bypass flue and the coal exchange machine allows the recovered residual gas to be supplied to the glass factory for its own use, such as for winter heating or daily kitchen use; if the glass factory does not need to use the residual gas, it can also be supplied back to the coal exchange machine to improve the efficiency of waste gas utilization. The two modes can be switched according to actual needs;

[0048] 3) By using the changes in gas temperature and gas content as the basis for feedback control and gate linkage, the end point of gas recovery during the coal exchanger reversing process is determined. Attached Figure Description

[0049] Figure 1 A schematic diagram of the principle of the coal exchanger is shown in a preferred embodiment of the present invention.

[0050] Figure 2 A schematic diagram of the results of a residual gas intelligent recovery system for a coal-fired glass production line, which is a preferred embodiment of the present invention.

[0051] Figure 3 This is a schematic diagram of the structure of the gas recovery device 10 in a preferred embodiment of the present invention;

[0052] Figure 4 This is a schematic flowchart of a method for intelligent recovery of residual coal gas in a coal-fired glass production line, which is a preferred embodiment of the present invention. Detailed Implementation

[0053] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment; other embodiments that conform to the spirit of the present invention may also fall within the scope of the present invention.

[0054] In a preferred embodiment of the present invention, based on the above-mentioned problems existing in the prior art, a smart residual gas recovery system for a coal-fired glass production line is provided, such as... Figure 2 As shown, it includes:

[0055] Bypass flue 1 is located on one side of branch flue 3, which connects to the gas flue outlet of the coal exchange machine 2;

[0056] Gas storage tank 4 is connected to the gas outlet of bypass flue 1 and the gas inlet of the glass factory, and is also connected to the gas inlet of coal exchange machine 2 through gas outlet pipe 5.

[0057] The gas recovery device 10 is used to control the bell of the coal exchange machine 2 when it receives a reversing command, and to allow the residual gas in the branch flue 3 to flow into the gas storage tank 4 through the bypass flue 1 for storage, and to cut off the connection between the coal exchange machine 2 and the main flue 7. After the bell is completed, the gas stored in the gas storage tank 4 flows into the coal exchange machine 2. When the gas content is higher than the content threshold or the temperature is higher than the temperature threshold, the residual gas in the branch flue 3 is stopped from flowing into the gas storage tank 4 through the bypass flue 1, and the coal exchange machine 2 and the main flue 7 are reconnected. Finally, the flow of the gas stored in the gas storage tank into the coal exchange machine 2 is stopped, thus completing the reversing of the coal exchange machine.

[0058] Furthermore, in this embodiment, as Figure 2 As shown, it also includes an intake valve F1 installed at the intake of the bypass flue 1 and a flue regulating gate F3 installed in the main flue 2; it includes an intake motor M1 installed in the bypass flue 1 and a gate motor M3 connected to the flue regulating gate F3; then the gas recovery device is electrically connected to the intake valve, the intake motor, the flue regulating valve and the gate motor respectively.

[0059] Gas recovery device 10 Figure 3 As shown, it includes:

[0060] The gas collection unit 110 is used to control the opening of the inlet valve F1, start the inlet motor M1 to draw in gas, and start the gate motor M3 to shut off the connection between the flue regulating gate F3 and the main flue 7, so that the residual gas in the branch flue 3 flows into the gas storage tank 4 through the bypass flue 1 for storage.

[0061] Furthermore, in this embodiment, as Figure 2 As shown, it also includes an outlet valve F2 installed in the outlet pipe 5; and an outlet motor M2 installed in the outlet pipe 5; then the gas recovery device is electrically connected to the outlet valve and the outlet motor respectively;

[0062] Gas recovery device 10 Figure 3 As shown, it includes:

[0063] The gas return supply unit 120 is used to control the gas outlet valve F2 to open after the bell is completed and to start the gas outlet motor M2 so that the gas stored in the gas storage tank 4 flows into the coal exchanger 2 and mixes with the fresh gas entering the coal exchanger 2.

[0064] Furthermore, in this embodiment, as Figure 2 As shown, it also includes a temperature sensor TE installed in the branch flue 3 and a gas sensor OE installed at the air inlet of the bypass flue; the gas recovery device is electrically connected to the temperature sensor and the gas sensor respectively.

[0065] Gas recovery device 10 Figure 3 As shown, it includes:

[0066] The recovery stop unit 130 is used to stop the residual coal gas in the branch flue 3 from flowing into the coal gas storage tank 4 through the bypass flue 1 when the gas sensor OE detects that the carbon monoxide content in the gas is less than the set content threshold, or when the temperature sensor TE detects that the temperature in the branch flue is higher than the temperature threshold. It also reconnects the coal exchange machine 2 and the main flue 7, and finally stops the coal gas stored in the coal storage tank 4 from flowing into the coal exchange machine 2, thus completing the reversal of the coal exchange machine.

[0067] Specifically, in this embodiment, as Figure 1 The diagram shows the structural principle of the coal exchanger. The coal exchanger 2 consists of three main parts: a base 21, a bell jar 22, and a top cover 23. The three holes on the base 21 are channels for coal gas flow. During operation, the bell jar covers two of the holes, and the coal gas enters the flue through the uncovered holes to be burned in the kiln. At the same time, the exhaust gas enters the middle hole through the side covered by the bell jar, thus entering the main flue and being discharged. The bell jar 22 reciprocates under the action of the transmission mechanism to achieve coal gas exchange.

[0068] For further details, please refer to Figure 1 and Figure 2 The exhaust port B in the middle of the coal conveyor is connected to the main flue to link to the chimney, while the exhaust ports A and C on both sides lead to the gas storage chamber MN through the branch flue 3. Figure 2 As can be seen, the whole structure includes two upper and lower branch flues 3 connecting multiple gas storage chambers MN on the south and north sides. (In this embodiment, hole C corresponds to 9 gas storage chambers M on the south side, and hole A corresponds to 9 gas storage chambers N on the north side).

[0069] During a normal operation of the coal excavator, a top cover 23 covers the base, and a bell jar 22 is built inside the top cover 23. The bell jar 22 covers holes B and A, and a water seal isolates the inside and outside of the bell jar 22, thus forming two passages. One is a gas passage formed by the gas inlet, the inner cavity of the top cover and hole C, and the other is a flue gas passage formed by the inner cavity of the bell jar and holes A and B. At this time, the gas enters the gas regenerator through the gas passage, and the flue gas in the kiln is discharged to the main flue through the flue gas passage.

[0070] At this time, when the reversing command is given, the bell jar 22 of the control coal exchange machine 2 is moved (that is, the bell jar 22 is moved to the right). At this time, the bell jar 22 covers the B hole and the C hole, and the water seal isolates the inside and outside of the bell jar 22. This forms two passages. One is the gas passage formed by the gas inlet, the inner cavity of the upper cover and the A hole, and the other is the flue gas passage formed by the inner cavity of the bell jar and the B and C holes. At this time, the gas enters the gas regenerator through the gas passage, and the flue gas in the kiln is discharged to the main flue through the flue gas passage.

[0071] Fresh gas begins to flow into the south gas regenerator M of the kiln, while exhaust gas from combustion inside the kiln is discharged into the north regenerator N. Simultaneously, the gas remaining in the north gas regenerators N (numbers 1-9) before the reversal, as well as the residual gas in the north branch flue 3, begins to be discharged. The flow direction of the residual gas is "from right to left (from...)". Figure 2 (The flow is directed towards the coal exchange machine 2). It is known that the temperature of the coal gas in the regenerator chamber before combustion is 400-500°C, while the temperature of the exhaust gas after combustion in the furnace is about 600-700°C. Moreover, the CO and CO2 concentrations of the flue gas after combustion are much higher than those of the fresh coal gas before combustion. At this time, a large amount of coal gas at a high temperature of about 600°C remaining in the original intake flue will be discharged into the atmosphere along with the exhaust gas from the furnace combustion. This not only wastes a lot of energy, but also causes great pollution to the environment due to the incomplete combustion of coal gas.

[0072] Therefore, the residual gas is recovered through a gas recovery device at this time, and the process is as follows:

[0073] 1. Control the opening of the intake valve F1 and start the intake motor M1 to draw in air, and start the gate motor M3 to shut off the connection between the flue regulating gate F3 and the coal exchange machine 2 and the main flue 7 (this is to prevent residual coal gas from leaking through the bypass flue 1 and being discharged into the atmosphere through the bell jar 22 of the coal exchange machine 2). This allows the residual coal gas in the branch flue 3 to flow into the coal gas storage tank 4 for storage through the bypass flue 1.

[0074] 2. After the bell jar 22 has moved (6-8 seconds after step 1 is completed), control the gas outlet valve F2 to open and start the gas outlet motor M2 so that the gas stored in the gas storage tank 4 flows into the coal exchange machine 2 and mixes with the fresh gas entering the coal exchange machine, and supplies it to the gas storage chamber M on the south side as fuel for the next round of combustion.

[0075] 3. While performing steps 1 and 2, the gas sensor OE detects the gas content in the branch flue 3, and the temperature sensor T3 detects the temperature in the branch flue 3.

[0076] When the gas sensor OE detects that the carbon monoxide content in the gas is less than the set content threshold and the temperature sensor TE detects that the temperature in the branch flue 3 is lower than the temperature threshold, the inlet valve F1 is kept open, the inlet motor M1 is kept drawing in air, the flue regulating gate F3 is kept closed, the outlet valve F2 is kept open and the outlet motor M2 is kept running, so that the gas stored in the gas storage tank 4 continuously flows into the coal exchanger 2 and mixes with the fresh gas entering the coal exchanger.

[0077] When the gas sensor OE detects that the carbon monoxide content in the gas is less than the set threshold, or when the temperature sensor TE detects that the temperature in the branch flue 3 is higher than the temperature threshold, it indicates that the "exhaust gas" has filled the north gas regenerator N and the branch flue 3, and the residual gas has been basically collected. The inlet valve F1 is closed, the inlet motor M1 is stopped, the flue regulating gate F3 is opened / closed, the outlet valve F2 is closed, and the outlet motor M2 is stopped to prevent the residual gas in the branch flue 3 from flowing into the gas storage tank 4 through the bypass flue 1. The coal transfer machine 2 and the main flue 7 are then reconnected. Finally, the flow of gas stored in the gas storage tank 4 into the coal transfer machine 2 is stopped, completing the reversal of the coal transfer machine 2 and awaiting the next reversal.

[0078] Since the north and south side branch flues 3, gas storage chamber MN, bypass flue 1, and various valves and motors in this system are symmetrically arranged, when switching from north to south, the motors and valves at the symmetrical positions on the south side can be opened and closed in accordance with the above process to achieve gas collection during the switching process.

[0079] Compared to existing recycling devices, this system has the following advantages:

[0080] 1. The location of the "gas intake point" of the bypass flue 1 is optimized. The bypass flue 1 is located closer to the coal exchange machine 2, and the flue length is short, which can save materials and maximize the collection of all residual coal gas.

[0081] 2. Add 4 gas storage tanks; residual gas can be used by the glass factory itself or fed back to the coal exchange machine 2. Two modes can be switched according to actual needs.

[0082] 3. Add a temperature sensor TE and a gas sensor OE to use changes in gas temperature and concentration as the basis for system feedback control and gate linkage.

[0083] 4. The newly added flue gas regulating damper F3 is linked to the system. When recovering coal gas, the flue gas regulating damper F3 is always closed to ensure that 100% of the residual coal gas can be recovered. After the residual coal gas is recovered, the flue gas regulating damper is opened again to discharge the exhaust gas.

[0084] 5. Optimize the selection of motors and valves. The inlet motor M1, outlet motor M2, and gate motor M3 are all explosion-proof motors. Inlet valve F1 and outlet valve F2 are pneumatic butterfly valves, equipped with 24VDC solenoid control valves. This design minimizes the probability of deflagration accidents caused by gas leaks, thereby improving the reliability of safe production.

[0085] In a preferred embodiment of the present invention, a plurality of pressure sensors are further provided, respectively disposed in the bypass flue and the exhaust pipe. An alarm device is also provided, connected to each sensor, for issuing a pressure alarm when the pressure in the bypass flue or the exhaust pipe exceeds a pressure threshold.

[0086] This invention also provides a method for intelligent recovery of residual coal gas in a coal-fired glass production line, applicable to the aforementioned intelligent residual coal gas recovery system, such as... Figure 4 As shown, it includes:

[0087] Step S1: When the residual gas intelligent recovery system receives the reversing command, it controls the bell of the coal exchange machine to move, so that the residual gas in the branch flue flows into the gas storage tank through the bypass flue for storage.

[0088] In step S2, the residual gas intelligent recovery system disconnects the coal exchange machine from the main flue, and then, after the bell jar moves, the gas stored in the gas storage tank flows into the coal exchange machine.

[0089] Step S3, the residual gas intelligent recovery system determines whether the detected gas content in the bypass flue is higher than the content threshold or whether the detected temperature in the branch flue is higher than the temperature threshold:

[0090] If so, proceed to step S4;

[0091] If not, return to step S2;

[0092] In step S4, the residual gas intelligent recovery system stops the residual gas in the branch flue from flowing into the gas storage tank through the bypass flue, and reconnects the coal exchange machine and the main flue. Finally, it stops the gas stored in the gas storage tank from flowing into the coal exchange machine, thus completing the reversal of the coal exchange machine.

[0093] Preferably, the residual gas intelligent recovery system further includes:

[0094] An air intake valve is provided at the air intake of the bypass flue, and the bypass flue is also equipped with an air intake motor;

[0095] A flue regulating damper is installed in the main flue, and the flue regulating damper is also connected to a damper motor;

[0096] In step S1, when the residual gas intelligent recovery system receives a reversing command, it controls the air intake valve to open, starts the air intake motor to draw in air, and starts the gate motor to shut off the connection between the flue regulating gate and the main flue, so that the residual gas in the branch flue flows into the gas storage tank for storage through the bypass flue.

[0097] Preferably, the residual gas intelligent recovery system further includes:

[0098] An exhaust valve is installed in the exhaust pipe, and an exhaust motor is also provided in the exhaust pipe;

[0099] In step S2, the residual gas intelligent recovery system controls the gas outlet valve to open and starts the gas outlet motor after the bell jar moves, so that the gas stored in the gas storage tank flows into the coal exchanger and mixes with the fresh gas entering the coal exchanger.

[0100] Preferably, the residual gas intelligent recovery system further includes:

[0101] A temperature sensor is installed in the branch flue;

[0102] A gas sensor is installed at the air inlet of the bypass flue;

[0103] In step S3, the residual gas intelligent recovery system determines whether the carbon monoxide content in the gas detected by the gas sensor is higher than a set content threshold, or whether the temperature in the flue gas duct is higher than the temperature threshold.

[0104] If so, proceed to step S4;

[0105] If not, return to step S2.

[0106] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present invention.

Claims

1. A smart system for recovering residual coal gas from a coal-fired glass production line, characterized in that, include: A bypass flue is located on one side of the branch flue at the gas flue outlet connecting to the coal exchange machine; The gas storage tank is connected to the gas outlet of the bypass flue and the gas inlet of the glass factory, and is also connected to the gas inlet of the coal exchange machine through a gas outlet pipe. Gas recovery device, including: A temperature sensor is installed in the branch flue; A gas sensor is installed at the air inlet of the bypass flue; The system controls the movement of the bell housing of the coal exchanger upon receiving a reversing command, allowing residual coal gas in the branch flue to flow into the coal gas storage tank via the bypass flue for storage, and disconnects the connection between the coal exchanger and the main flue. After the bell housing movement is complete, the coal gas stored in the coal gas storage tank flows into the coal exchanger. When the gas sensor detects that the gas content in the bypass flue is higher than a content threshold, or the temperature sensor detects that the temperature in the branch flue is higher than a temperature threshold, the system stops the flow of residual coal gas from the branch flue into the coal gas storage tank via the bypass flue, reconnects the coal exchanger and the main flue, and finally stops the flow of coal gas stored in the coal storage tank into the coal exchanger, thus completing the coal exchanger reversing.

2. The intelligent residual gas recovery system according to claim 1, characterized in that, Also includes: An air intake valve is provided at the air intake of the bypass flue, and the bypass flue is also equipped with an air intake motor; A flue regulating damper is installed in the main flue, and the flue regulating damper is also connected to a damper motor; The gas recovery device is electrically connected to the inlet valve, the inlet motor, the flue regulating gate, and the gate motor, and includes: The gas collection unit is used to control the opening of the air inlet valve, start the air inlet motor to draw in gas, and start the gate motor to shut off the connection between the gas exchange machine and the main flue by the flue regulating gate, so that the residual gas in the branch flue flows into the gas storage tank for storage through the bypass flue.

3. The intelligent residual gas recovery system according to claim 1, characterized in that, Also includes: An exhaust valve is installed in the exhaust pipe, and an exhaust motor is also provided in the exhaust pipe; The gas recovery device is electrically connected to the gas outlet valve and the gas outlet motor, respectively, and includes: The gas return unit is used to control the gas outlet valve to open and start the gas outlet motor after the bell has moved completely, so that the gas stored in the gas storage tank flows into the coal exchanger and mixes with the fresh gas entering the coal exchanger.

4. The intelligent residual gas recovery system according to claim 2, characterized in that, The gas recovery device also includes: The recovery stop unit is used to control the intake valve to close and stop the intake motor when the gas sensor detects that the carbon monoxide content in the gas is higher than a set content threshold, or when the temperature sensor detects that the temperature in the branch flue is higher than the temperature threshold, so as to stop the residual coal gas in the branch flue from flowing into the coal gas storage tank through the bypass flue. It also controls the flue regulating gate to open to reconnect the coal exchanger and the main flue, and finally stops the coal gas stored in the coal gas storage tank from flowing into the coal exchanger, thus completing the reversing of the coal exchanger.

5. The intelligent residual gas recovery system according to claim 1, characterized in that, Also includes: Multiple pressure sensors are respectively installed in the bypass flue and the outlet pipe; It also includes an alarm device connected to each of the pressure sensors, used to issue a pressure alarm when the pressure in the bypass flue or the exhaust pipe exceeds the pressure threshold.

6. A method for intelligent recovery of residual coal gas from a coal-fired glass production line, characterized in that, The residual gas intelligent recovery system as described in any one of claims 1-5 includes: Step S1: When the residual gas intelligent recovery system receives the reversing command, it controls the bell of the coal exchange machine to move, so that the residual gas in the branch flue flows into the gas storage tank through the bypass flue for storage. In step S2, the residual gas intelligent recovery system disconnects the coal exchange machine from the main flue, and then, after the bell jar moves, the gas stored in the gas storage tank flows into the coal exchange machine. Step S3, the residual gas intelligent recovery system determines whether the detected gas content in the bypass flue is higher than the content threshold or whether the detected temperature in the branch flue is higher than the temperature threshold: If so, proceed to step S4; If not, return to step S2; In step S4, the residual gas intelligent recovery system stops the residual gas in the branch flue from flowing into the gas storage tank through the bypass flue, and reconnects the coal exchange machine and the main flue. Finally, it stops the gas stored in the gas storage tank from flowing into the coal exchange machine, thus completing the reversal of the coal exchange machine.

7. The intelligent recovery method for residual coal gas according to claim 6, characterized in that, The intelligent residual gas recovery system also includes: An air intake valve is provided at the air intake of the bypass flue, and the bypass flue is also equipped with an air intake motor; A flue regulating damper is installed in the main flue, and the flue regulating damper is also connected to a damper motor; In step S1, when the residual gas intelligent recovery system receives a reversing command, it controls the air intake valve to open, starts the air intake motor to draw in air, and starts the gate motor to shut off the connection between the coal delivery machine and the main flue, so that the residual gas in the branch flue flows into the gas storage tank for storage through the bypass flue.

8. The intelligent recovery method for residual coal gas according to claim 6, characterized in that, The intelligent residual gas recovery system also includes: An exhaust valve is installed in the exhaust pipe, and an exhaust motor is also provided in the exhaust pipe; In step S2, the residual gas intelligent recovery system controls the gas outlet valve to open and starts the gas outlet motor after the bell jar moves, so that the gas stored in the gas storage tank flows into the coal exchanger and mixes with the fresh gas entering the coal exchanger.

9. The intelligent recovery method for residual coal gas according to claim 7, characterized in that, The intelligent residual gas recovery system also includes: A temperature sensor is installed in the branch flue; A gas sensor is installed at the air inlet of the bypass flue; In step S3, the residual gas intelligent recovery system determines whether the carbon monoxide content in the gas detected by the gas sensor is higher than a set content threshold, or whether the temperature in the flue gas duct is higher than the temperature threshold. If so, proceed to step S4; If not, return to step S2.

Images