Heat treatment furnace feeding bin and control method thereof and heat treatment furnace system

Abstract

The present invention relates to the field of heat treatment technology, and provides a heat treatment furnace feed bin, a control method thereof, and a heat treatment furnace system. The heat treatment furnace feed bin includes: a shell, which is configured with a feed inlet and a discharge port; an upper exhaust valve, which is connected to the shell and is used to discharge the combustible gas in the shell; a lower exhaust valve, which is connected to the shell and is used to discharge the combustion-supporting gas in the shell; an intake valve, which is used to inject non-combustible gas into the shell; a pressure gauge, which is used to monitor the air pressure inside the shell, and control the opening and closing of the lower exhaust valve and the intake valve according to the air pressure; a CO gas concentration tester and / or a CO2 gas concentration tester, which controls the opening of the upper exhaust valve according to the gas concentration. The heat treatment furnace feed bin can discharge the combustion-supporting gas in the shell through the lower exhaust valve, avoid the inner wall of the furnace from being burned, and increase the life of the carbon material in the furnace; the combustible gas in the shell can be discharged through the upper exhaust valve, thereby avoiding the occurrence of combustion and explosion accidents.

Description

Technical Field

[0001] The present invention relates to the field of heat treatment technology, and in particular to a heat treatment furnace feeding bin and a control method thereof, and a heat treatment furnace system. Background Art

[0002] With the development, application expansion and technological progress of graphitization furnaces and ultra-high temperature electric calcining furnaces, the proportion of carbonaceous materials used in the furnace has gradually increased, which has caused the inner wall of the furnace to be easily burned by oxygen. As a result, the original non-sealed oxygen-insulated raw material warehouse can no longer meet the new requirements of graphitization furnaces and ultra-high temperature electric calcining furnaces. On the other hand, as the carbonaceous raw materials containing a small amount of adsorbed water enter the high-temperature furnace of the graphitization furnace or ultra-high temperature electric calcining furnace, water gas will be produced in the high-temperature furnace. Specifically, the following reaction occurs in the high-temperature furnace: C (carbon) + H2O (water) = CO (carbon monoxide) + H2 (hydrogen); thus, CO and H2 accumulate and gather in the upper part of the closed furnace chamber. When the concentration of CO and H2 reaches a certain level, it is very easy to cause a deflagration accident. The reaction formulas that occur in the deflagration accident are as follows: 2H2+O2=2H2O; 2CO+O2=2CO2. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a heat treatment furnace feed bin, which can prevent oxygen from entering the high-temperature furnace, effectively prevent the furnace inner wall from being burned; reduce the moisture content of the raw materials entering the furnace, effectively reduce the generation of water gas; and automatically monitor the combustible gas discharged from the furnace to avoid explosion accidents.

[0004] The invention also provides a method for controlling a material feeding bin of a heat treatment furnace.

[0005] The invention also provides a heat treatment furnace system.

[0006] A heat treatment furnace feed bin according to an embodiment of the first aspect of the present invention comprises:

[0007] The shell is constructed with an inlet and a discharge port, the inlet is used for the carbonaceous raw material to enter the warehouse, and the discharge port is used to connect to the feed port of the heat treatment furnace to pass the carbonaceous raw material into the heat treatment furnace; the inlet is controlled by the upper control valve to open and close, and the discharge port is controlled by the lower control valve to open and close;

[0008] An upper exhaust valve, connected to the shell and used to exhaust the combustible gas in the shell;

[0009] A lower exhaust valve, connected to the shell and used to exhaust the combustion-supporting gas in the shell;

[0010] an air inlet valve for injecting non-combustible gas into the shell;

[0011] A pressure gauge, used to monitor the air pressure inside the housing and control the opening and closing of the lower exhaust valve and the intake valve according to the air pressure;

[0012] The CO gas concentration tester and / or CO2 gas concentration tester are used to monitor the CO gas concentration and / or CO2 gas concentration inside the shell, and control the opening of the upper exhaust valve according to the gas concentration.

[0013] According to the heat treatment furnace feed bin of the embodiment of the present invention, the combustion-supporting gas in the shell can be discharged through the lower exhaust valve to avoid the inner wall of the furnace from being burned and to increase the life of the carbon material in the furnace; the combustible gas in the shell can be discharged through the upper exhaust valve to avoid the occurrence of combustion and explosion accidents. In addition, non-combustible gas can be injected through the air intake valve, and even if there is a small amount of combustion-supporting gas or combustible gas in the heat treatment furnace feed bin, the injection of non-combustible gas can further dilute it; and the injection of non-combustible gas through the air intake valve can further discharge the adsorbed water in the raw materials, thereby preventing the occurrence of explosion accidents.

[0014] According to one embodiment of the present invention, the upper control valve is an upper automatic control electric valve; and the lower control valve is a lower automatic control electric valve.

[0015] According to one embodiment of the present invention, the upper exhaust valve is installed at the material inlet, and the lower exhaust valve is installed at the material outlet.

[0016] According to an embodiment of the present invention, the bottom of the shell gradually shrinks from top to bottom to form the discharge port.

[0017] A method for controlling a heat treatment furnace feed bin according to a second aspect of the present invention includes:

[0018] Controlling the upper control valve to open and the lower control valve to close, so that the carbonaceous raw material can flow into the shell of the heat treatment furnace feed bin;

[0019] Controlling the upper control valve to close and the lower exhaust valve to open, so as to exhaust the combustion-supporting gas in the shell until the gas pressure in the shell reaches a first set gas pressure;

[0020] Controlling the air inlet valve to open, and controlling the non-combustible gas to continue to flow into the shell and be discharged through the lower exhaust valve;

[0021] Controlling the lower exhaust valve to close so that the non-combustible gas can flow into the shell;

[0022] The lower control valve is controlled to be opened so that the carbonaceous raw material falls into the heat treatment furnace until the raw material in the shell is insufficient, the lower control valve is controlled to be closed, and all the previous steps are repeated.

[0023] The technical effect of the control method for the heat treatment furnace feed bin according to the embodiment of the present invention corresponds to the technical effect of the heat treatment furnace feed bin described above, and will not be repeated here.

[0024] The heat treatment furnace system according to the third aspect of the embodiment of the present invention includes a heat treatment furnace and also includes the above-mentioned heat treatment furnace feeding bin.

[0025] The technical effect of the heat treatment furnace system according to the embodiment of the present invention corresponds to the technical effect of the heat treatment furnace feeding bin described above, and will not be repeated here.

[0026] According to one embodiment of the present invention, the non-combustible gas is nitrogen, and the heat treatment furnace feed bin further includes a nitrogen container, and the nitrogen container is connected to the air inlet valve for injecting the nitrogen into the shell.

[0027] According to one embodiment of the present invention, the nitrogen container is provided with a heater.

[0028] According to one embodiment of the present invention, it also includes an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned heat treatment furnace feeding bin control method when executing the computer program.

[0029] According to one embodiment of the present invention, the heat treatment furnace is a graphitization furnace or an ultra-high temperature electric calcining furnace, and the carbonaceous raw material is aluminum electrolysis waste cathode or anode residue or calcined coke or a mixture.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic structural diagram of a heat treatment furnace feed bin according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. Feeding port; 2. Upper automatic control electric valve; 3. Upper exhaust valve; 4. Shell; 5. Inlet valve; 6. Lower exhaust valve; 7. Feeding port; 8. Lower automatic control electric valve; 9. Pressure gauge; 10. CO gas concentration tester and / or CO2 gas concentration tester. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the embodiments of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0038] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] See also Figure 1, according to the heat treatment furnace feed bin of the embodiment of the present invention, comprises a shell 4, an upper exhaust valve 3, a lower exhaust valve 6, an intake valve 5, a CO gas concentration tester and a pressure gauge 9. Among them, the shell 4 is constructed with an inlet 1 and a discharge port 7, the inlet is used for carbonaceous raw materials to enter the bin, and the discharge port 7 is used to connect with the inlet of the heat treatment furnace to pass the carbonaceous raw materials into the heat treatment furnace; the inlet is controlled by the upper control valve to be on and off, and the discharge port is controlled by the lower control valve to be on and off; the exhaust valve is connected to the shell 4, and the specific exhaust valve comprises an upper exhaust valve 3 and a lower exhaust valve 6, the upper exhaust valve 3 is mainly used to discharge the combustible gas in the shell 4, and the lower exhaust valve 6 is mainly used to discharge the combustion-supporting gas in the shell 4; the intake valve 5 is ... The non-combustible gas is injected into the shell 4; the pressure gauge 9 is used to monitor the air pressure inside the shell 4, and control the opening and closing of the lower exhaust valve 6 and the intake valve 5 according to the air pressure; the CO gas concentration tester and / or the CO2 gas concentration tester 10 are used to monitor the CO gas concentration (water gas includes CO, so the same effect can be achieved by monitoring the water gas concentration) and / or CO2 gas concentration inside the shell 4, and are interlocked with the upper exhaust valve 3 to open and close, so that the water gas concentration inside the shell 4 is always controlled within a very safe range.

[0041] According to the heat treatment furnace feed bin of the embodiment of the present invention, the combustion-supporting gas in the shell 4 can be discharged through the lower exhaust valve 6 to avoid the inner wall of the furnace from being burned and to increase the life of the carbon material in the furnace; the combustible gas in the shell 4 can be discharged through the upper exhaust valve 3 to avoid the occurrence of combustion and explosion accidents. In addition, non-combustible gas can be injected through the air intake valve 5, and even if there is a small amount of combustion-supporting gas or combustible gas in the heat treatment furnace feed bin, the injection of non-combustible gas can further dilute it, and the injection of non-combustible gas through the air intake valve can further discharge the adsorbed water in the raw materials, thereby preventing the occurrence of explosion accidents.

[0042] Among them, the upper control valve and the lower control valve are used to coordinate the entry of raw materials into the warehouse, the exhaust in the warehouse, and the unloading of raw materials into the furnace; the operations of raw materials entering the warehouse, exhausting and entering the furnace generally include:

[0043] Close the lower control valve, then open the upper control valve, and the raw materials enter the warehouse quickly and fill it up;

[0044] Close the upper control valve and open the lower exhaust valve to discharge the combustion-supporting gas in the shell;

[0045] Then, the air inlet valve is opened to introduce hot non-combustible gas, so that the adsorbed water and combustion-supporting gas in the raw materials are further discharged;

[0046] Close the lower exhaust valve, continue to introduce hot non-combustible gas, open the lower control valve, and the raw materials fall into the heat treatment furnace;

[0047] When the raw materials in the shell are insufficient (for example, the raw materials in the shell are less than 10%), the lower control valve is automatically closed to stop the raw materials from falling into the furnace;

[0048] Repeat all the above steps.

[0049] Taking the treatment of waste cathodes from aluminum electrolysis as an example, when oxygen enters the heat treatment furnace through the feed silo, it will react with the graphite positive electrode and the carbon material of the furnace wall, 2C+O2=2CO, thereby shortening the service life of the electrode and the carbon material of the furnace wall; the raw materials contain a small amount of moisture, including the adsorbed water of the raw materials, the crystallized water in the impurities and the moisture in the air, which will produce water gas (C+H2O=H2+CO) when entering the heat treatment furnace, of which H2 and CO are both combustible gases. When their concentrations reach a certain level, explosion accidents are very likely to occur.

[0050] According to an embodiment of the present invention, the CO gas concentration tester and / or CO2 concentration tester 10 refers to: two testers that can detect CO concentration and CO2 concentration separately, or it can also be a tester that can detect CO concentration and CO2 concentration at the same time.

[0051] The CO gas concentration tester is installed on the shell 4 and can detect the concentration of CO in the shell 4. The value obtained by the CO gas concentration tester is interlocked with the upper exhaust valve 3 to control the opening or closing of the upper exhaust valve 3. When the concentration of CO in the shell 4 exceeds the first concentration value, it means that a certain amount of CO and H2 are enriched in the warehouse. At this time, the interlocked upper exhaust valve 3 will automatically open to discharge the CO and H2 in the warehouse; when the concentration of CO in the shell 4 is lower than the second concentration value, it means that the concentration of CO and H2 in the warehouse is extremely low and very safe, and the upper exhaust valve 3 will automatically close.

[0052] In the same way, a CO2 gas concentration tester is installed on the shell 4 and can detect the concentration of CO2 in the shell 4. The CO2 concentration measured by the CO2 gas concentration tester is used to guide the inspection and control of the oxygen-isolating seal of the shell and the furnace body.

[0053] Of course, in addition to monitoring the CO concentration or CO 2 concentration in the shell 4 , the hydrogen concentration in the shell 4 may also be monitored.

[0054] In the embodiment of the present invention, when the concentration of CO in the shell 4 exceeds a first concentration value, or when the concentration of CO2 in the shell 4 is lower than a second concentration value, the upper exhaust valve 3 is automatically controlled to open to discharge the CO and H2 gases in the shell 4, and the upper exhaust valve 3 is automatically closed after the CO and H2 gases are discharged, thereby avoiding the occurrence of explosion accidents.

[0055] According to an embodiment of the present invention, the exhaust valve comprises an upper exhaust valve 3 installed at the feed inlet 1, and a lower exhaust valve 6 installed at the feed outlet 7. In this case, the upper exhaust valve 3 and the lower exhaust valve 6 are convenient to disassemble and assemble. Of course, the number and distribution of the exhaust valves are not affected by the attached Figure 1 as long as the gas in the shell 4 can be discharged.

[0056] Combination Figure 1 A feed pipe is formed at the upper part of the shell 4, and a feed port 1 is formed on the feed pipe; a discharge pipe is formed at the lower part of the shell 4, and a discharge port 7 is formed on the discharge pipe. The bottom of the shell 4 gradually contracts from top to bottom to form the discharge port 7, thereby ensuring that all raw materials enter the heat treatment furnace through the shell 4, and avoiding the accumulation of raw materials at the bottom of the heat treatment furnace.

[0057] In the embodiment of the present invention, the upper control valve is an upper automatic control electric valve 2 provided at the feed port 1, and the upper automatic control electric valve 2 is used to control the carbonaceous raw material to enter the feed bin of the heat treatment furnace. In addition, the lower control valve is a lower automatic control electric valve 8 provided at the feed port 7, and the lower automatic control electric valve 8 is used to control the carbonaceous raw material to fall into the heat treatment furnace; the opening and closing of the upper automatic control electric valve 2 and the lower automatic control electric valve 8 are mainly used to coordinate the entry of raw materials into the bin, the exhaust in the bin, and the entry of raw materials into the furnace after exhaust.

[0058] According to an embodiment of the present invention, a control method for the feed bin of the heat treatment furnace is provided, specifically a control method for charging, exhausting and feeding the heat treatment furnace, including:

[0059] S1, first close the feed port 7 through the lower control valve, and open the feed port 1 through the upper control valve, and control the carbonaceous raw material to be quickly loaded into the shell 4 of the feed bin of the heat treatment furnace;

[0060] S2, controlling the upper control valve to close so that the feed port 1 is closed, and controlling the lower exhaust valve 6 to open, so as to control the exhaust of the combustion-supporting gas in the shell 4, until the gas pressure in the shell 4 reaches a first set gas pressure;

[0061] S3, controlling the air inlet valve 5 to open, and controlling the non-combustible gas to flow into the shell 4;

[0062] S4, controlling the lower exhaust valve 6 to close, and controlling the non-combustible gas to continue to flow into the shell 4;

[0063] S5, controlling the lower control valve to open so that the carbonaceous raw material falls into the heat treatment furnace, until the raw material in the shell 4 is insufficient, and then controlling the lower control valve to close.

[0064] Repeat the previous steps S1-S5.

[0065] In S1, the feed port 7 is controlled to be closed and the feed port 1 is controlled to be opened, and the carbonaceous raw material is controlled to be introduced into the shell 4 of the heat treatment furnace until the carbonaceous raw material reaches a set amount. The carbonaceous raw material can be aluminum electrolysis waste cathode, and of course it can also be other types of carbonaceous raw materials.

[0066] In S2, the feed port 1 is controlled to be closed and the lower exhaust valve 6 is opened, and the combustion-supporting gas in the shell 4 is controlled to be discharged until the air pressure in the shell 4 reaches the first set air pressure, and the lower exhaust valve 6 is controlled to be closed. For example, the first set air pressure can be between -30Pa and -50Pa, at which time most of the combustion-supporting gas (oxygen) in the feed bin of the heat treatment furnace is discharged, and the oxygen-free requirement of the heat treatment furnace can be preliminarily guaranteed. Of course, other values ​​can also be selected for the first set air pressure, as long as it ensures that most of the oxygen is discharged without causing too much unnecessary power waste.

[0067] In addition, in S2, while exhausting the combustion-supporting gas, the adsorbed water in the feed silo of the heat treatment furnace can also be extracted to minimize the amount of adsorbed water entering the heat treatment furnace.

[0068] In S3, the air inlet valve 5 is opened, and the non-combustible gas can be injected into the shell 4. Furthermore, even if there is a small amount of oxygen in the heat treatment furnace feed bin, it can be further diluted by injecting the non-combustible gas. The non-combustible gas can be nitrogen, of course, it can also be an inert gas, or it can also be any other type of non-combustible gas, as long as no combustion reaction occurs after entering the heat treatment furnace.

[0069] In S3, while opening the air intake valve 5, the lower exhaust valve 6 may also be closed, that is, before step S4, the lower exhaust valve 6 may be closed in advance. In this case, when injecting non-combustible gas into the shell 4, the air pressure in the shell 4 may be monitored, for example, when the air pressure in the shell 4 reaches a second set air pressure, the injection of gas is stopped, wherein the second set air pressure may be between 10Pa and 50Pa, or other suitable air pressure values ​​may be selected, as long as the purpose of diluting oxygen can be achieved without causing too much unnecessary power waste, and then the air intake valve 5 is closed.

[0070] In S4, the lower exhaust valve 6 is controlled to be closed, and the non-combustible gas is controlled to continue to be introduced into the shell 4 to further ensure the anaerobic state in the heat treatment furnace feed bin, thereby preventing oxygen and further reducing adsorbed water from entering the heat treatment furnace. The injection of non-combustible gas can be stopped when the air pressure in the shell 4 reaches a third set air pressure, and the third set air pressure can be selected as -10 Pa, and other suitable air pressure values ​​can also be selected.

[0071] In S5, during the opening of the discharge port 7, the carbonaceous raw material falls from the heat treatment furnace feed bin into the heat treatment furnace. During the material dropping process, the heat treatment furnace feed bin can be controlled between -20 Pa and 0 Pa by the induced draft fan of the heat treatment furnace. In addition, during the material dropping process, the CO concentration and / or CO2 concentration in the heat treatment furnace feed bin is always monitored by the CO gas concentration tester and / or the CO2 concentration tester 10. For example, when the CO gas concentration tester and the upper exhaust valve 3 are interlocked to monitor the CO concentration in the heat treatment furnace feed bin, the CO concentration in the heat treatment furnace feed bin can be automatically controlled to be below 300ppm (parts per million, which can also be set to 200ppm or 100ppm).

[0072] In one embodiment, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the control method for feeding a material into a silo of a heat treatment furnace as described above when executing the computer program.

[0073] According to an embodiment of the present invention, a heat treatment furnace system is provided, including a heat treatment furnace and the heat treatment furnace feed bin, wherein the feed port of the heat treatment furnace is connected to the feed port 7 .

[0074] The heat treatment furnace system has a simple structure, sufficient oxygen isolation and can significantly increase the service life of carbon materials. In addition, the heat treatment furnace system can significantly reduce the generation of water gas and prevent the combustion and explosion of water gas, and is safe and reliable.

[0075] In one embodiment, the heat treatment furnace system further includes a nitrogen container, in which nitrogen as a non-combustible gas is stored. The nitrogen container is connected to an air inlet valve 5 , and the nitrogen can be injected into the shell 4 by controlling the opening of the air inlet valve 5 .

[0076] In one embodiment, the nitrogen container is provided with a waste heat heater, and hot nitrogen is introduced into the heat treatment furnace feed bin. After the hot nitrogen is introduced into the heat treatment furnace feed bin, it is beneficial to reduce the amount of adsorbed water and discharge it.

[0077] In one embodiment, the heat treatment furnace system of the embodiment of the present invention includes the above-mentioned electronic device. Specifically, the electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned heat treatment furnace feed bin control method when executing the computer program.

[0078] In one embodiment, in the heat treatment furnace system of the embodiment of the present invention, the heat treatment furnace is a graphitization furnace or an ultra-high temperature electric calcining furnace, and the carbonaceous raw material is aluminum electrolysis waste cathode or anode residue or calcined coke or a mixture.

[0079] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A method for controlling a material feeding bin of a heat treatment furnace, wherein: Heat treatment furnace feed silo includes: The shell is constructed with an inlet and a discharge port, the inlet is used for the carbonaceous raw material to enter the warehouse, and the discharge port is used to connect to the feed port of the heat treatment furnace to pass the carbonaceous raw material into the heat treatment furnace; the inlet is controlled by the upper control valve to open and close, and the discharge port is controlled by the lower control valve to open and close; An upper exhaust valve, connected to the shell and used to exhaust the combustible gas in the shell; A lower exhaust valve, connected to the shell and used to exhaust the combustion-supporting gas in the shell; an air inlet valve for injecting non-combustible gas into the shell; A pressure gauge, used to monitor the air pressure inside the housing and control the opening and closing of the lower exhaust valve and the intake valve according to the air pressure; A CO gas concentration tester and / or a CO2 gas concentration tester, used to monitor the CO gas concentration and / or CO2 gas concentration inside the shell, and control the opening of the upper exhaust valve according to the gas concentration; Characterized in that the method comprises: Controlling the upper control valve to open and the lower control valve to close, so that the carbonaceous raw material can flow into the shell of the heat treatment furnace feed bin; Controlling the upper control valve to close and the lower exhaust valve to open, so as to exhaust the combustion-supporting gas in the shell until the gas pressure in the shell reaches a first set gas pressure; Controlling the air inlet valve to open, and controlling the non-combustible gas to continue to flow into the shell and be discharged through the lower exhaust valve; Controlling the lower exhaust valve to close so that the non-combustible gas can flow into the shell; The lower control valve is controlled to be opened so that the carbonaceous raw material falls into the heat treatment furnace until the raw material in the shell is insufficient, the lower control valve is controlled to be closed, and all the previous steps are repeated.

2. The control method for the heat treatment furnace feeding bin according to claim 1, characterized in that: The upper control valve is an upper automatic control electric valve; the lower control valve is a lower automatic control electric valve.

3. The control method for the heat treatment furnace feeding bin according to claim 1, characterized in that: The upper exhaust valve is installed at the material inlet, and the lower exhaust valve is installed at the material outlet.

4. The control method for feeding a material into a heat treatment furnace according to claim 1, characterized in that: The bottom of the shell gradually shrinks from top to bottom to form the feed opening.

5. A heat treatment furnace system, comprising a heat treatment furnace and a heat treatment furnace feed bin, characterized in that: It also includes an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the control method for the feed bin of a heat treatment furnace as described in any one of claims 1 to 4, wherein the heat treatment furnace is a graphitization furnace or an ultra-high temperature electric forging furnace.

6. The heat treatment furnace system according to claim 5, characterized in that: The non-combustible gas is nitrogen, and the heat treatment furnace feed bin further includes a nitrogen container, which is connected to the air inlet valve and is used to inject the nitrogen into the shell.

7. The heat treatment furnace system according to claim 6, characterized in that: The nitrogen container is provided with a heater.

8. The heat treatment furnace system according to claim 5, characterized in that: The carbonaceous raw material is aluminum electrolysis waste cathode or anode scrap or calcined coke or a mixed material.

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