Multi-outlet real-time switchable heating system

Abstract

The utility model discloses a multi-outlet real-time switchable heating system, which is characterized in that each of a plurality of recuperative furnaces comprises a flue gas inlet, a flue gas outlet, a heat exchange gas inlet and a heat exchange gas outlet, the flue gas inlets of the plurality of recuperative furnaces are connected with a combustion device in parallel through a first pipeline, and the heat exchange gas inlets of the plurality of recuperative furnaces are connected with the combustion device through a second pipeline; flue gas outlets of the plurality of heat exchange furnaces are respectively connected with the second pipeline, heat exchange gas inlets of the plurality of heat exchange furnaces are respectively connected with the third pipeline, and heat exchange gas outlets of the plurality of heat exchange furnaces are connected with the coke oven in parallel through a fourth pipeline. The utility model can ensure the stability of the process temperature in the coke oven.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel combustion heating, and in particular to a multi-outlet real-time switchable heating system and method. Background Art

[0002] In the fields of coking, petroleum, chemical industry, etc., combustion and heat exchange are the core equipment of thermal energy devices. In recent years, my country has been vigorously promoting energy conservation and emission reduction, strengthening safety, energy conservation and environmental protection. Especially in the coking industry, high-temperature distillation is an important process that cannot be separated from heating and heat exchange; the yield and composition of coal distillation products depend not only on the quality of raw coal and furnace structure, but more importantly on processing conditions, which are mainly temperature and time. With the different temperatures of coal distillation process, coal distillation products are also different. Therefore, stable temperature control of coal distillation process plays a decisive role in coal distillation products. Utility Model Content

[0003] In view of the problems existing in the background technology, the purpose of the utility model is to provide a multi-outlet real-time switchable heating system, which can ensure the stability of the process temperature in the coke oven.

[0004] The multi-outlet real-time switchable heating system according to the embodiment of the utility model includes a combustion device, a coke oven, and a heat exchange furnace;

[0005] Wherein, the combustion device is used to generate high-temperature flue gas;

[0006] There are multiple heat exchange furnaces, each of which is equipped with heat storage materials. Each of the multiple heat exchange furnaces includes a flue gas inlet, a flue gas outlet, a heat exchange gas inlet and a heat exchange gas outlet. The flue gas inlets of the multiple heat exchange furnaces are connected to the combustion device in parallel through a first pipeline, the flue gas outlets of the multiple heat exchange furnaces are respectively connected to the second pipeline, the heat exchange gas inlets of the multiple heat exchange furnaces are respectively connected to the third pipeline, and the heat exchange gas outlets of the multiple heat exchange furnaces are connected to the coke oven in parallel through a fourth pipeline.

[0007] The multi-outlet real-time switchable heating system of the embodiment of the utility model has the following working principle: on the one hand, the high-temperature flue gas generated by the combustion device can enter the multiple heat exchange furnaces through the first pipeline respectively, and the high-temperature flue gas entering the heat exchange furnace heats the heat exchange furnace, so that the actual temperature of the multiple heat exchange furnaces meets the set temperature of the heat exchange furnace, and the high-temperature flue gas entering the heat exchange furnace heats the heat exchange furnace to become low-temperature flue gas, and the low-temperature flue gas is discharged through the second pipeline, thereby realizing the flue gas circulation of each heat exchange furnace; on the other hand, the low-temperature heat exchange gas can enter the multiple heat exchange furnaces through the third pipeline respectively, and become high-temperature heat exchange gas after absorbing the heat of the heat exchange furnace, and enter the coke oven through the fourth pipeline to perform high-temperature dry distillation process; according to the actual temperature and set temperature of the multiple heat exchange furnaces, the actual temperature and set temperature of the coke oven are controlled to open and close the flue gas inlet, flue gas outlet, heat exchange gas inlet and heat exchange gas outlet of the multiple heat exchange furnaces and start and stop the combustion device, that is, the multiple heat exchange furnaces are freely switched in real time to ensure the temperature of the high-temperature heat exchange gas is stable, so that the coke oven obtains a stable dry distillation product.

[0008] The multi-outlet real-time switchable heating system according to the embodiment of the utility model has the following advantages: first, the heat exchange furnace can be freely switched according to demand, and the temperature inside the coke oven can be freely set; second, the stability of the high-temperature heat exchange gas entering the coke oven can be guaranteed, and a stable distillation product can be obtained; third, the structure is simple and easy to implement.

[0009] In some embodiments, the plurality of heat exchange furnaces are each provided with a first temperature detector, and the coke oven is provided with a second temperature detector.

[0010] In some embodiments, a first valve is provided at the smoke inlet, a second valve is provided at the smoke outlet, a third valve is provided at the heat exchange gas inlet, and a fourth valve is provided at the heat exchange gas outlet.

[0011] In some embodiments, the combustion device includes a burner and a furnace, and the furnace is connected between the burner and the first pipe.

[0012] In some embodiments, an induced draft fan is further included, and the induced draft fan is connected to the coke oven.

[0013] In some embodiments, the heat storage material is a heat storage brick.

[0014] In some embodiments, the first pipeline includes a first main pipe and a plurality of first branch pipes connected in parallel to the first main pipe, the inlet end of the first main pipe is connected to the combustion device, and the outlet ends of the plurality of first branch pipes are connected one by one to the flue gas inlets of the plurality of heat exchange furnaces.

[0015] In some embodiments, the second pipeline includes a second main pipe and a plurality of second branch pipes connected in parallel to the second main pipe, and the inlet ends of the plurality of second branch pipes are connected to the flue gas outlets of the plurality of heat exchange furnaces in a one-to-one correspondence.

[0016] In some embodiments, the third pipeline includes a third main pipe and a plurality of third branch pipes connected in parallel to the third main pipe, and outlet ends of the plurality of third branch pipes are connected to heat exchange gas inlets of the plurality of heat exchange furnaces.

[0017] In some embodiments, the fourth pipeline includes a fourth main pipe and multiple fourth branch pipes connected in parallel to the fourth main pipe, the outlet end of the fourth main pipe is connected to the coke oven, and the inlet ends of the multiple fourth branch pipes are connected one by one to the heat exchange gas outlets of the multiple heat exchange furnaces.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of a multi-outlet real-time switchable heating system according to an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of a heat exchange furnace in a multi-outlet real-time switchable heating system according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] Combustion device 1; burner 101; furnace 102; coke oven 2; heat exchange furnace 3; flue gas inlet 301; first valve 3011; flue gas outlet 302; second valve 3021; ​​heat exchange gas inlet 303; third valve 3031; heat exchange gas outlet 304; fourth valve 3041; heat storage material 305; first pipeline 4; first main pipe 401; first branch pipe 402; second pipeline 5; second main pipe 501; second branch pipe 502; third pipeline 6; third main pipe 601; third branch pipe 602; fourth pipeline 7; fourth main pipe 701; fourth branch pipe 702; first temperature detector 8; second temperature detector 9; induced draft fan 10. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] Combine the following Figure 1 to Figure 2 To describe the multi-outlet real-time switchable heating system of an embodiment of the utility model.

[0026] like Figure 1 to Figure 2 As shown, the multi-outlet real-time switchable heating system according to an embodiment of the utility model includes a combustion device 1, a coke oven 2 and a heat exchange furnace 3.

[0027] The combustion device 1 is used to generate high-temperature flue gas; the combustion device 1 generates high-temperature flue gas by burning fuel, and uses the high-temperature flue gas to heat the heat exchange furnace 3, for example, to make the actual temperature of the heating furnace greater than its own set temperature.

[0028] There are multiple heat exchange furnaces 3, each of which is equipped with heat storage material 305. Each of the multiple heat exchange furnaces 3 includes a flue gas inlet 301, a flue gas outlet 302, a heat exchange gas inlet 303 and a heat exchange gas outlet 304. The flue gas inlets 301 of the multiple heat exchange furnaces 3 are connected to the combustion device 1 in parallel through the first pipeline 4, the flue gas outlets 302 of the multiple heat exchange furnaces 3 are respectively connected to the second pipeline 5, the heat exchange gas inlets 303 of the multiple heat exchange furnaces 3 are respectively connected to the third pipeline 6, and the heat exchange gas outlets 304 of the multiple heat exchange furnaces 3 are connected to the coke oven 2 in parallel through the fourth pipeline 7.

[0029] For example, Figure 1As shown, there are three heat exchange furnaces 3, each heat exchange furnace 3 includes a flue gas inlet 301, a flue gas outlet 302, a heat exchange gas inlet 303 and a heat exchange gas outlet 304. A first pipeline 4 is connected between the three heat exchange furnaces 3 and the combustion device 1. Specifically, the first pipeline 4 includes a first main pipe 401 and three first branch pipes 402 connected in parallel with the first main pipe 401. The inlet end of the first main pipe 401 is connected to the combustion device 1, and the outlet ends of the three first branch pipes 402 are connected to the flue gas inlets 301 of the three heat exchange furnaces 3 in a one-to-one correspondence, so that the flue gas inlets 301 of the three heat exchange furnaces 3 are connected to the combustion device 1 in parallel through the first pipeline 4. Thus, the flue gas inlets 301 of multiple heat exchange furnaces 3 are connected to the combustion device 1 in parallel through the first pipeline 4, the connection is simple, and the high-temperature flue gas generated by the combustion device 1 can enter the multiple heat exchange furnaces 3 through the first pipeline 4 respectively, heat the heat exchange furnaces 3, and the high-temperature flue gas becomes low-temperature flue gas after heating the heat exchange furnaces 3. The smoke outlets 302 of the three heat exchange furnaces 3 are connected to the second pipeline 5. Specifically, the second pipeline 5 includes a second main pipe 501 and three second branch pipes 502 connected in parallel to the second main pipe 501. The inlet ends of the three second branch pipes 502 are connected to the smoke outlets 302 of the three heat exchange furnaces 3 in a one-to-one correspondence. The connection is simple, and the low-temperature smoke in the three heat exchange furnaces 3 can be discharged from the second pipeline 5. Therefore, the second pipeline 5 can be connected to multiple heat exchange furnaces 3 to discharge the low-temperature smoke in the multiple heat exchange furnaces 3. The heat exchange gas inlets 303 of the three heat exchange furnaces 3 are respectively connected to the third pipeline 6. Specifically, the third pipeline 6 includes a third main pipe 601 and three third branch pipes 602 connected in parallel with the third main pipe 601. The outlet ends of the three third branch pipes 602 are connected to the heat exchange gas inlets 303 of the three heat exchange furnaces 3. The connection is simple, and the low-temperature heat exchange gas can enter the inlet end of the third main pipe 601 and enter the three heat exchange furnaces 3 through the third branch pipes 602, so that the low-temperature heat exchange gas exchanges heat with the heat exchange furnace 3 to become the high-temperature heat exchange gas required by the coke oven 2. Thus, the third pipeline 6 is connected to multiple heat exchange furnaces 3, and the low-temperature heat exchange gas is transported to the multiple heat exchange furnaces 3 through the third pipeline 6, and becomes the high-temperature heat exchange gas after absorbing the heat of the multiple heat exchange furnaces 3. The heat exchange gas outlets 304 of the three heat exchange furnaces 3 are connected to the coke oven 2 in parallel through the fourth pipeline 7. Specifically, the fourth pipeline 7 includes a fourth main pipe 701 and three fourth branch pipes 702 connected in parallel to the fourth main pipe 701. The outlet end of the fourth main pipe 701 is connected to the coke oven 2, and the inlet ends of the three fourth branch pipes 702 are connected to the heat exchange gas outlets 304 of the three heat exchange furnaces 3 in a one-to-one correspondence, thereby realizing that the heat exchange gas outlets 304 of the three heat exchange furnaces 3 are connected to the coke oven 2 in parallel through the fourth pipeline 7.Thus, the heat exchange gas outlets 304 of the multiple heat exchange furnaces 3 are connected to the combustion furnace in parallel through the fourth pipe 7, the connection is simple, and the high-temperature heat exchange gas after absorbing heat in the multiple heat exchange furnaces 3 can enter the multiple coke ovens 2 through the fourth pipe 7 to perform high-temperature carbonization process. By setting up multiple heat exchange furnaces 3, the heat exchange furnaces 3 can be easily switched to ensure the temperature stability of the high-temperature heat exchange gas entering the furnace 102, that is, the stability of the process temperature of the coke oven 2, and obtain a stable carbonization product.

[0030] The multi-outlet real-time switchable heating system of the embodiment of the utility model has the following working principle: on the one hand, the high-temperature flue gas generated by the combustion device 1 can enter the multiple heat exchange furnaces 3 through the first pipe 4 respectively; the high-temperature flue gas entering the heat exchange furnace 3 heats the heat exchange furnace 3, so that the actual temperature of the multiple heat exchange furnaces 3 meets the set temperature of the heat exchange furnace 3; the high-temperature flue gas entering the heat exchange furnace 3 heats the heat exchange furnace 3 and becomes low-temperature flue gas; the low-temperature flue gas is discharged through the second pipe 5, thereby realizing the flue gas circulation of each heat exchange furnace 3; on the other hand, the low-temperature heat exchange gas can enter the multiple heat exchange furnaces 3 through the third pipe 6 respectively. In the heat exchange furnace 3, after absorbing the heat of the heat exchange furnace 3, it becomes a high-temperature heat exchange gas, and enters the coke oven 2 through the fourth pipeline 7 to undergo a high-temperature carbonization process. According to the actual temperature and set temperature of the multiple heat exchange furnaces 3 and the actual temperature and set temperature of the coke oven 2, the opening and closing of the flue gas inlet 301, the flue gas outlet 302, the heat exchange gas inlet 303 and the heat exchange gas outlet 304 of the multiple heat exchange furnaces 3 and the start and stop of the combustion device 1 are controlled, that is, the multiple heat exchange furnaces 3 are freely switched in real time to ensure the temperature of the high-temperature heat exchange gas is stable, so that the coke oven 2 can obtain a stable carbonization product.

[0031] The multi-outlet real-time switchable heating system according to the embodiment of the utility model has the following advantages: first, the heat exchange furnace 3 can be freely switched according to demand, and the temperature in the coke oven 2 can be freely set; second, the stability of the high-temperature heat exchange gas entering the coke oven 2 can be ensured, and a stable distillation product can be obtained; third, the structure is simple and easy to implement.

[0032] In some embodiments, the plurality of heat exchange furnaces 3 are each provided with a first temperature detector 8, and the coke oven 2 is provided with a second temperature detector 9. The first temperature detector 8 is used to detect the actual temperature in the heat exchange furnace 3, and the second temperature detector 9 is used to detect the actual temperature in the coke oven 2.

[0033] In some embodiments, a first valve 3011 is provided at the smoke inlet 301, and the first valve 3011 is used to close and open the smoke inlet 301; a second valve 3021 is provided at the smoke outlet 302, and the second valve 3021 is used to close and open the smoke outlet 302; a third valve 3031 is provided at the heat exchange gas inlet 303, and the third valve 3031 is used to close and open the heat exchange gas inlet 303; a fourth valve 3041 is provided at the heat exchange gas outlet 304, and the fourth valve 3041 is used to close and open the heat exchange gas outlet.

[0034] In some embodiments, the combustion device 1 includes a burner 101 and a furnace 102 , and the furnace 102 is connected between the burner 101 and the first pipeline 4 .

[0035] In some embodiments, an induced draft fan 10 is further included, and the induced draft fan 10 is connected to the coke oven 2. By providing the induced draft fan 10, the power of the heat exchange gas channel can be increased, so that the high-temperature heat exchange gas can quickly enter the coke oven 2.

[0036] In some embodiments, Figure 2 As shown, the heat exchange furnace 3 is equipped with a heat storage material 305. The heat storage material 305 is used as a heat storage medium, which can be a heat storage brick, etc., for exchanging heat with high-temperature flue gas and absorbing the heat released by the high-temperature flue gas; at the same time, the heat storage material 305 is also used for exchanging heat with low-temperature heat exchange gas, and the low-temperature heat exchange gas absorbs the heat of the heat storage material 305 and becomes a high-temperature heat exchange gas.

[0037] In some embodiments, the first pipeline 4 includes a first main pipe 401 and multiple first branch pipes 402 connected in parallel to the first main pipe 401, the inlet end of the first main pipe 401 is connected to the combustion device 1, and the outlet ends of the multiple first branch pipes 402 are connected one by one to the flue gas inlets 301 of multiple heat exchange furnaces 3, thereby achieving the connection of the flue gas inlets 301 of the three heat exchange furnaces 3 with the combustion device 1 in parallel through the first pipeline 4.

[0038] In some embodiments, the second pipeline 5 includes a second main pipe 501 and multiple second branch pipes 502 connected in parallel to the second main pipe 501. The inlet ends of the multiple second branch pipes 502 are connected one-to-one with the flue gas outlets 302 of the multiple heat exchange furnaces 3. The connection is simple and can enable the low-temperature flue gas in the three heat exchange furnaces 3 to be discharged from the second pipeline 5.

[0039] In some embodiments, the third pipeline 6 includes a third main pipe 601 and multiple third branch pipes 602 connected in parallel to the third main pipe 601. The outlet ends of the multiple third branch pipes 602 are connected to the heat exchange gas inlets 303 of multiple heat exchange furnaces 3. The connection is simple, and the low-temperature heat exchange gas can enter the inlet end of the third main pipe 601 and enter the three heat exchange furnaces 3 respectively through the third branch pipes 602, so that the low-temperature heat exchange gas is exchanged with the heat exchange furnace 3 to become the high-temperature heat exchange gas required by the coke oven 2.

[0040] In some embodiments, the fourth pipeline 7 includes a fourth main pipe 701 and a plurality of fourth branch pipes 702 connected in parallel with the fourth main pipe 701, the outlet end of the fourth main pipe 701 is connected to the coke oven 2, and the inlet ends of the plurality of fourth branch pipes 702 are connected one by one to the heat exchange gas outlets 304 of the plurality of heat exchange furnaces 3. Thus, the heat exchange gas outlets 304 of the three heat exchange furnaces 3 are connected to the coke oven 2 in parallel through the fourth pipeline 7. Thus, the heat exchange gas outlets 304 of the plurality of heat exchange furnaces 3 are connected to the combustion furnace in parallel through the fourth pipeline 7, the connection is simple, and the high-temperature heat exchange gas after absorbing heat in the plurality of heat exchange furnaces 3 can enter the multiple coke ovens 2 through the fourth pipeline 7 to perform high-temperature dry distillation process.

[0041] The utility model multi-outlet real-time switchable heating system can adopt the following control method:

[0042] When the actual temperature in the coke oven 2 is lower than the set temperature of the coke oven 2 and the actual temperature of any heat exchange furnace 3 is higher than its own set temperature, the corresponding heat exchange furnaces 3 are operated one by one in the order in which the corresponding heat exchange furnaces 3 are arranged in numbers, the smoke inlet 301 and the smoke outlet 302 of the corresponding heat exchange furnace 3 are closed and the heat exchange gas inlet 303 and the heat exchange gas outlet 304 are opened, otherwise an abnormal alarm is issued.

[0043] For example, when the actual temperature in the coke oven 2 is lower than the set temperature of the coke oven 2 and the actual temperature of any heat exchange furnace 3 is higher than its own set temperature, the smoke inlet 301 and smoke outlet 302 of the corresponding heat exchange furnace 3 are closed and the heat exchange gas inlet 303 and heat exchange gas outlet 304 are opened, otherwise an alarm is abnormal. When the actual temperature in the coke oven 2 is lower than the set temperature of the coke oven 2 and the actual temperatures of any two or more heat exchange furnaces 3 are higher than their own set temperatures, for any two or more heat exchange furnaces 3, the smoke inlet 301 and smoke outlet 302 of the corresponding heat exchange furnace 3 with the smallest number can be closed first, and the heat exchange gas inlet 303 and heat exchange gas outlet 304 can be opened, and then the smoke inlet 301 and smoke outlet 302 of the corresponding heat exchange furnace 3 with the second smallest number can be closed, and the heat exchange gas inlet 303 and heat exchange gas outlet 304 can be opened, and so on, and the any two or more heat exchange furnaces 3 can be operated one by one.

[0044] When the actual temperature in the coke oven 2 is lower than the set temperature of the coke oven 2 and the actual temperature of any heat exchange furnace 3 is lower than its own set temperature, the corresponding heat exchange furnaces 3 are operated one by one in the order in which the corresponding heat exchange furnaces 3 are arranged in numbers, the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 are opened, and the heat exchange gas inlet 303 and outlet valves are closed, and the combustion device 1 starts to heat the corresponding heat exchange furnace 3 until the actual temperature of the corresponding heat exchange furnace 3 is higher than its own set temperature, then the heating is stopped and the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 are closed.

[0045] For example, when the actual temperature in the coke oven 2 is lower than the set temperature of the coke oven 2 and the actual temperature of any one of the heat exchange furnaces 3 is lower than its own set temperature, the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 are opened, and the heat exchange gas inlet 303 and the outlet valve are closed, and the combustion device 1 starts to heat the corresponding heat exchange furnace 3 until the actual temperature of the corresponding heat exchange furnace 3 is higher than its own set temperature, then the heating is stopped, and the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 are closed. When the actual temperature in the coke oven 2 is lower than the set temperature of the coke oven 2 and the actual temperatures of any two or more heat exchange furnaces 3 are lower than their own set temperatures, then for any two or more heat exchange furnaces 3, it is possible to start from the corresponding heat exchange furnace with the smallest number, first open the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace with the smallest number, and close the heat exchange gas inlet 303 and the outlet valve, and the combustion device 1 starts to heat the corresponding heat exchange furnace 3 with the smallest number, until the actual temperature of the corresponding heat exchange furnace 3 with the smallest number is higher than its own set temperature, then the heating is stopped, and the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 are closed. Close the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 with the smallest number; then open the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 with the second smallest number and close the heat exchange gas inlet 303 and outlet valves, the combustion device 1 starts to heat the corresponding heat exchange furnace 3 with the second smallest number until the actual temperature of the corresponding heat exchange furnace 3 with the second smallest number is greater than its own set temperature, then stop heating, close the flue gas inlet 301 and the flue gas outlet 302 of the corresponding heat exchange furnace 3 with the second smallest number; and so on, operate any two or more heat exchange furnaces 3 one by one.

[0046] Therefore, the control method of the multi-outlet real-time switchable heating system of the utility model has the following advantages: first, the heat exchange furnace 3 can be freely switched according to demand, and the temperature in the furnace 102 of the coke oven 2 can be freely set; second, the stability of the high-temperature heat exchange gas entering the coke oven 2 can be guaranteed, and a stable distillation product can be obtained; third, the control method is simple.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-outlet real-time switchable heating system, characterized in that: Including combustion device, coke oven, heat exchange furnace; Wherein, the combustion device is used to generate high-temperature flue gas; There are multiple heat exchange furnaces, each of which is equipped with heat storage materials. Each of the multiple heat exchange furnaces includes a flue gas inlet, a flue gas outlet, a heat exchange gas inlet and a heat exchange gas outlet. The flue gas inlets of the multiple heat exchange furnaces are connected to the combustion device in parallel through a first pipeline, the flue gas outlets of the multiple heat exchange furnaces are respectively connected to the second pipeline, the heat exchange gas inlets of the multiple heat exchange furnaces are respectively connected to the third pipeline, and the heat exchange gas outlets of the multiple heat exchange furnaces are connected to the coke oven in parallel through a fourth pipeline.

2. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: The plurality of heat exchange furnaces are each provided with a first temperature detector, and the coke oven is provided with a second temperature detector.

3. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: A first valve is provided at the smoke inlet, a second valve is provided at the smoke outlet, a third valve is provided at the heat exchange gas inlet, and a fourth valve is provided at the heat exchange gas outlet.

4. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: The combustion device comprises a burner and a furnace, and the furnace is connected between the burner and the first pipeline.

5. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: It also includes an induced draft fan, which is connected to the coke oven.

6. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: The heat storage material is a heat storage brick.

7. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: The first pipeline includes a first main pipe and a plurality of first branch pipes connected in parallel to the first main pipe, the inlet end of the first main pipe is connected to the combustion device, and the outlet ends of the plurality of first branch pipes are connected one by one to the flue gas inlets of the plurality of heat exchange furnaces.

8. The multi-outlet real-time switchable heating system according to claim 1 is characterized in that: The second pipeline includes a second main pipe and a plurality of second branch pipes connected in parallel with the second main pipe, and the inlet ends of the plurality of second branch pipes are connected to the smoke outlets of the plurality of heat exchange furnaces in a one-to-one correspondence.

9. The multi-outlet real-time switchable heating system according to claim 1, characterized in that: The third pipeline includes a third main pipe and a plurality of third branch pipes connected in parallel to the third main pipe, and outlet ends of the plurality of third branch pipes are connected to heat exchange gas inlets of the plurality of heat exchange furnaces.

10. The multi-outlet real-time switchable heating system according to claim 1, characterized in that: The fourth pipeline includes a fourth main pipe and a plurality of fourth branch pipes connected in parallel to the fourth main pipe, the outlet end of the fourth main pipe is connected to the coke oven, and the inlet ends of the plurality of fourth branch pipes are connected one by one to the heat exchange gas outlets of the plurality of heat exchange furnaces.

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