Brown gas flame-stabilizing methanol combustion system and method

Abstract

The invention relates to the technical field of combustion equipment, in particular to a Brown gas flame-stabilizing methanol combustion system and method.The system comprises a combustor, a Brown gas pipeline, a methanol pipeline, a combustion-supporting gas pipeline and an atomization air pipeline, the Brown gas pipeline is connected with the combustor and used for conveying Brown gas to the combustor, and Brown gas flames can be formed at the position of the combustor; the methanol pipeline is connected with the combustor and is used for conveying methanol to the combustor; the combustion-supporting gas pipeline is connected with the combustor and is used for introducing combustion-supporting gas into the combustor; the atomization air pipeline is connected with the combustor and used for conveying atomization air to the combustor so that the methyl alcohol conveyed to the combustor can be atomized, and the atomized methyl alcohol can take Brown gas flames as an ignition source. According to the Brown gas stable flame methanol combustion system and method, efficient combustion of methanol can be guaranteed, sufficient combustion of methanol is guaranteed, the problem that methanol is prone to incomplete combustion is solved, and carbon emission is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of combustion equipment, and in particular to a Brownian gas flame-stabilized methanol combustion system and method. Background Art

[0002] Using hydrogen energy to fire and produce ceramics is a common carbon-reducing production method. Methanol is a liquid at room temperature. Compared with high-pressure hydrogen storage, methanol is a very good liquid hydrogen storage and transportation carrier. Methanol does not require high temperature and high pressure conditions during storage and transportation, making storage and transportation safer and more reliable.

[0003] However, when burning methanol, the method of directly burning methanol alone is inefficient and prone to incomplete combustion. If the methanol is preheated to vaporize and then burned, on the one hand, it is difficult to ensure the stability of vaporization. On the other hand, if it is burned after vaporization, it is also prone to flameout and incomplete combustion. Vaporization is also prone to produce harmful toxic gases. Summary of the invention

[0004] The purpose of the present invention includes providing a Brownian gas flame-stabilized methanol combustion system and method, which can ensure efficient combustion of methanol and ensure complete combustion of methanol, improve the problem of incomplete combustion of methanol, and reduce carbon emissions.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a Brownian gas flame-stabilized methanol combustion system, comprising:

[0007] Burner;

[0008] A Brown's gas pipeline is connected to the burner and is used to transport Brown's gas to the burner and form a Brown's gas flame at the burner;

[0009] a methanol pipeline, the methanol pipeline being connected to the burner and used for conveying methanol toward the burner;

[0010] A combustion-supporting gas pipeline, which is connected to the burner and is used to supply the combustion-supporting gas to the burner; and

[0011] The atomizing air pipeline is connected to the burner and is used to deliver atomizing air to the burner so as to atomize the methanol delivered to the burner, wherein the atomized methanol can use the Brown gas flame as an ignition source.

[0012] In an optional embodiment, the Brown's gas flame-stabilizing methanol combustion system further comprises a first pressure gauge and a first shut-off valve, which are sequentially arranged on the Brown's gas pipeline along the direction in which the Brown's gas is transported to the burner in the Brown's gas pipeline;

[0013] The first shut-off valve is configured to close the Brown's gas line when the first pressure gauge detects that the pressure of the Brown's gas line is greater than or equal to a first preset pressure.

[0014] In an optional embodiment, the Brown's gas flame-stabilized methanol combustion system further comprises a water electrolysis device, which is connected to an end of the Brown's gas pipeline away from the burner and is used to provide Brown's gas to the Brown's gas pipeline; and / or,

[0015] The Brown's gas flame-stable methanol combustion system also includes a first valve, a water vapor separation device, a second cut-off valve, and a first fine-tuning valve; along the direction in which the Brown's gas is transported to the burner in the Brown's gas pipeline, the water vapor separation device, the first pressure gauge, the first cut-off valve, the second cut-off valve and the first fine-tuning valve are sequentially arranged in the Brown's gas pipeline; at least one of the Brown's gas pipeline upstream of the water vapor separation device and the Brown's gas pipeline downstream of the water vapor separation device is provided with a first valve; wherein the second cut-off valve is configured to control the opening and closing of the Brown's gas pipeline.

[0016] In an optional embodiment, the Brown's gas flame-stabilized methanol combustion system further includes a first flame arrester, which is arranged in the Brown's gas pipeline and located between the water electrolysis device and the water vapor separation device; and / or,

[0017] The Brownian gas flame-stabilized methanol combustion system further comprises a second flame arrester, which is arranged in the Brownian gas pipeline and is located downstream of the first fine-tuning valve; and / or,

[0018] The Brown gas flame-stabilized methanol combustion system further includes a pressure reducing valve, which is arranged in the Brown gas pipeline and located between the water vapor separation device and the first pressure gauge; and / or,

[0019] The Brown gas flame-stabilized methanol combustion system further comprises a pneumatic relief valve, which is arranged in the Brown gas pipeline and between the first shut-off valve and the second shut-off valve; and / or,

[0020] The Brown's gas flame-stabilized methanol combustion system also includes a leak detection switch, which is arranged in the Brown's gas pipeline and located between the first shut-off valve and the second shut-off valve.

[0021] In an optional embodiment, the Brown's gas flame-stabilized methanol combustion system further includes a nitrogen pipeline, which is connected to the Brown's gas pipeline and is used to transport nitrogen to the Brown's gas pipeline and the burner.

[0022] In an optional embodiment, the Brown gas flame-stabilized methanol combustion system further comprises a methanol storage tank, and one end of the methanol pipeline away from the burner is connected to the methanol storage tank; and / or,

[0023] The Brown gas flame-stabilized methanol combustion system also includes a reflux pipeline, the inlet end and the outlet end of the reflux pipeline are both connected to the methanol pipeline, so that the methanol overflowing from the methanol pipeline to the reflux pipeline flows back to the methanol pipeline.

[0024] In an optional embodiment, the Brown gas flame-stabilized methanol combustion system includes two methanol pipelines, the two methanol pipelines are connected in parallel with a methanol storage tank, and the methanol storage tank is selectively connected to the burner through one of the two methanol pipelines; and / or,

[0025] The Brown gas flame-stabilized methanol combustion system also includes a second valve and a first filter. The methanol storage tank is connected to an output pipe. The methanol pipeline is connected to the methanol storage tank through the output pipe. The second valve and the first filter are both arranged on the output pipe.

[0026] In an optional embodiment, the Brown gas flame-stabilized methanol combustion system also includes a third valve, a methanol pump and a second filter. The methanol pump and the second filter are sequentially arranged in the methanol pipeline along the direction in which methanol is transported to the burner in the methanol pipeline, and at least one of the methanol pipeline upstream of the methanol pump and the methanol pipeline downstream of the second filter is provided with a third valve.

[0027] In an optional embodiment, the Brown gas flame-stabilized methanol combustion system further includes a flow meter, which is arranged in the methanol pipeline; and / or,

[0028] The Brown gas flame-stable methanol combustion system also includes a delivery pipeline, a pressure sensor, a first controller, a frequency converter, a first opening valve, a second controller and a temperature detection element. The methanol pipeline is connected to the burner through the delivery pipeline, and the pressure sensor and the first opening valve are both arranged on the delivery pipeline; the methanol pump is electrically connected to the frequency converter, and the frequency converter and the pressure sensor are both electrically connected to the first controller. The first controller is used to control the frequency converter to adjust the methanol pressure delivered by the methanol pump according to the pressure detected by the pressure sensor; the temperature detection element and the first opening valve are both electrically connected to the second controller, and the second controller is configured to control the first opening valve to adjust the methanol flow delivered by the delivery pipeline according to the temperature detected by the temperature detection element.

[0029] In an optional embodiment, the Brown gas flame-stabilized methanol combustion system further includes a pressure stabilizing valve, which is arranged in the atomizing air duct; and / or,

[0030] The Brown gas flame-stabilizing methanol combustion system also includes a second opening valve, which is arranged on the combustion-supporting gas pipeline.

[0031] In a second aspect, the present invention further provides a Brown's gas flame-stabilized methanol combustion method, which uses any of the above-mentioned Brown's gas flame-stabilized methanol combustion systems to burn methanol in a kiln furnace; the Brown's gas flame-stabilized methanol combustion method comprises:

[0032] Use nitrogen to purge the Brown gas pipeline, and stop purging after the residual gas in the Brown gas pipeline is exhausted;

[0033] The combustion-supporting gas is transported to the burner by using the combustion-supporting gas pipeline, and the combustion-supporting gas is kept flowing in the burner;

[0034] The Brown's gas is transported to the burner by using a Brown's gas pipeline, and the Brown's gas transported to the burner is ignited to form a Brown's gas flame;

[0035] The atomizing air is transported to the burner by using an atomizing air pipeline, and the methanol is transported to the burner by using a methanol pipeline, and the methanol entering the burner is atomized by the atomizing air;

[0036] Atomized methanol is ignited using a Brown's gas flame as an ignition source.

[0037] In an optional embodiment, it also includes:

[0038] When the temperature of methanol combustion is lower than a first preset value, increasing the flow rate delivered to the burner to increase the temperature of the furnace of the kiln;

[0039] When the temperature of methanol during combustion is higher than a second preset value, the flow rate delivered to the burner is reduced to lower the temperature of the furnace chamber of the kiln.

[0040] The beneficial effects of the Brownian gas flame-stabilized methanol combustion system provided by the embodiment of the present invention include: the Brownian gas flame-stabilized methanol combustion system provided by the embodiment of the present invention can be used to burn methanol, and when using the system, a Brownian gas pipeline can be used to provide Brownian gas, and a Brownian gas flame can be used as an ignition source for methanol combustion. Brownian gas is a mixture of hydrogen and oxygen produced after the electrolysis of water. It burns stably and has no greenhouse gas emissions. Using the flame of Brownian gas combustion as an ignition source for methanol combustion can ensure the stability and sufficiency of methanol combustion, so as to improve the problem of incomplete combustion of methanol and reduce carbon emissions. The water vapor generated by the combustion of Brownian gas and methanol can increase the radiation capacity of the combustion flue gas, thereby enhancing the radiation heat exchange between the flue gas and methanol and shortening the combustion time, so as to further achieve the effect of energy saving and carbon reduction. There is no need to preheat the methanol for vaporization, which avoids the problem of unstable heating vaporization. It can also improve the problem of incomplete combustion caused by deignition of vaporization combustion and avoid the problem of toxic gas generation by vaporization.

[0041] The combustion-supporting gas provided by the combustion-supporting gas pipeline to the burner can maintain air circulation inside the burner, improve combustion retention caused by unsuccessful ignition, and prevent the dangerous situation of deflagration during re-ignition, thereby improving the safety of the Brown gas flame-stabilized methanol combustion system.

[0042] The Brownian gas flame-stabilized methanol combustion method provided by the embodiment of the present invention includes all the beneficial effects of the aforementioned Brownian gas flame-stabilized methanol combustion system. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 This is a schematic diagram of the structure of a Brownian gas flame-stabilized methanol combustion system according to an embodiment of the present invention;

[0045] Figure 2 Schematic diagram of the structure of the burner in the embodiment of the present invention.

[0046] Icon: 010-Brown gas flame-stabilized methanol combustion system; 1-electrolyzer; 2-first flame arrester; 3-first valve; 4-water vapor separation device; 6-pressure reducing valve; 7-first pressure gauge; 8-first shut-off valve; 9-pneumatic relief valve; 10-leak detection switch; 11-second shut-off valve; 13-first fine-tuning valve; 14-second flame arrester; 16-methanol storage tank; 17-second valve; 18-first filter; 19-sixth valve; 20-third valve; 21-methanol pump; 22-second filter; 23-flow meter; 24-overflow reflux valve; 25-fifth valve; 26-pressure sensor; 27-first controller; 28-frequency converter; 29-seventh valve ;30-second pressure gauge;31-first opening valve;32-fourth shut-off valve;33-second fine-tuning valve;34-first fan;35-pressure stabilizing valve;36-eighth valve;37-third pressure gauge;38-second fan;39-second opening valve;40-manual scale valve;51-Brown gas pipeline;52-methanol pipeline;53-combustion gas pipeline;54-atomizing air pipeline;55-nitrogen pipeline;56-burner;57-thermocouple;58-second controller;59-branch pipeline;60-fourth valve;61-third shut-off valve;70-housing;71-cavity;72-air outlet;81-Brown gas pipeline;82-atomizing air pipeline;83-methanol pipeline. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0052] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0053] Please refer to Figure 1 The present embodiment provides a Brown's gas flame-stabilized methanol combustion system 010, which includes a burner 56, a Brown's gas pipeline 51, a methanol pipeline 52, a combustion-supporting gas pipeline 53 and an atomizing air pipeline 54. The Brown's gas pipeline 51 is connected to the burner 56 for conveying Brown's gas to the burner 56 and forming a Brown's gas flame at the burner 56; the methanol pipeline 52 is connected to the burner 56 for conveying methanol toward the burner 56; the combustion-supporting gas pipeline 53 is connected to the burner 56 for passing the combustion-supporting gas into the burner 56; the atomizing air pipeline 54 is connected to the burner 56 for conveying atomizing air to the burner 56 so as to atomize the methanol conveyed to the burner 56, wherein the atomized methanol can use the Brown's gas flame as an ignition source.

[0054] When using the system, Brown's gas can be provided by Brown's gas pipeline 51, and the Brown's gas flame can be used as an ignition source for methanol combustion. Brown's gas is a mixture of hydrogen and oxygen produced by electrolysis of water. It burns stably and does not emit greenhouse gases. Using the flame of Brown's gas combustion as an ignition source for methanol combustion can ensure the stability and completeness of methanol combustion, so as to improve the problem of incomplete combustion of methanol and reduce carbon emissions. The water vapor produced by the combustion of Brown's gas and methanol can increase the radiation capacity of the combustion flue gas, thereby enhancing the radiation heat exchange between the flue gas and methanol and shortening the combustion time, so as to further achieve the effect of energy saving and carbon reduction. There is no need to preheat the methanol for vaporization, which avoids the problem of unstable heating vaporization. It can also improve the problem of incomplete combustion caused by deignition of vaporization combustion and avoid the problem of toxic gas generation by vaporization.

[0055] The combustion-supporting gas provided by the combustion-supporting gas pipeline 53 to the burner 56 can maintain air circulation inside the burner 56, improve combustion retention caused by unsuccessful ignition, and prevent the dangerous situation of deflagration during re-ignition, thereby improving the safety of the use of the Brownian gas flame-stabilized methanol combustion system 010.

[0056] The principle of atomizing methanol by atomizing wind includes: methanol is sprayed out by wind with relatively high pressure to form mist.

[0057] The Brown's gas flame-stabilized methanol combustion system 010 of the present embodiment also includes a water electrolysis device 1, a first valve 3, a water vapor separation device 4, a first pressure gauge 7, a first shut-off valve 8, a second shut-off valve 11, and a first fine-tuning valve 13; the water electrolysis device 1 is connected to the end of the Brown's gas pipeline 51 away from the burner 56, and is used to provide Brown's gas to the Brown's gas pipeline 51, that is, the water electrolysis device 1 is used to electrolyze water to form hydrogen and oxygen (i.e., Brown's gas), and can transport hydrogen and oxygen to the burner 56 through the Brown's gas pipeline 51; along the direction in which the Brown's gas is transported from the Brown's gas pipeline 51 to the burner 56, the water vapor separation device 4, the first pressure gauge 7, the first shut-off valve 8, the second shut-off valve 11 and the first fine-tuning valve 13 are sequentially arranged on the Brown's gas pipeline 51; the gas transmission separation device can separate the water vapor entering the Brown's gas pipeline 51 to reduce the Brown's gas pipeline 51. The moisture in the Brown's gas transported in the Brown's gas ensures the sufficient combustion of the Brown's gas; the Brown's gas pipeline 51 upstream of the water vapor separation device 4 and the Brown's gas pipeline 51 downstream of the water vapor separation device 4 are both provided with a first valve 3, and the first valve 3 and the first fine-tuning valve 13 can be used to regulate the Brown's gas flow rate of the Brown's gas pipeline 51; the second cut-off valve 11 is configured to control the opening and closing of the Brown's gas pipeline 51, that is, the second cut-off valve 11 can be used as the main switch of the Brown's gas pipeline 51 to control the opening or closing of the Brown's gas pipeline 51; the first cut-off valve 8 is configured to close the Brown's gas pipeline 51 when the first pressure gauge 7 detects that the pressure of the Brown's gas pipeline 51 is greater than the first preset pressure. The cooperation of the first cut-off valve 8 and the first pressure gauge 7 can be used as a safety protection device to improve the problem of damage to the pipeline downstream of the first cut-off valve 8 and the burner 56 under high pressure.

[0058] In other embodiments, the first valve 3 may be provided only on the Brown's gas pipeline 51 upstream of the water vapor separation device 4 or the Brown's gas pipeline 51 downstream of the water vapor separation device 4. Alternatively, in other embodiments, the first shut-off valve 8 may also be configured to close the Brown's gas pipeline 51 when the first pressure gauge 7 detects that the pressure of the Brown's gas pipeline 51 is equal to the first preset pressure.

[0059] Optionally, the Brownian gas flame-stabilized methanol combustion system 010 also includes a first flame arrester 2, which is arranged in the Brownian gas pipeline 51 and located between the water electrolysis device 1 and the water vapor separation device 4. The first flame arrester 2 includes but is not limited to a wet flame arrester; the setting of the first flame arrester 2 can improve the safety of the system when used.

[0060] Optionally, the Brownian gas flame-stabilized methanol combustion system 010 also includes a second flame arrester 14, which is arranged in the Brownian gas pipeline 51 and located downstream of the first fine-tuning valve 13. The second flame arrester 14 includes but is not limited to a metal flame arrester; the setting of the second flame arrester 14 can improve the safety of the system when used.

[0061] Optionally, the Brown's gas flame-stabilized methanol combustion system 010 further includes a pressure reducing valve 6, which is arranged in the Brown's gas pipeline 51 and located between the water vapor separation device 4 and the first pressure gauge 7; the pressure stability of the Brown's gas pipeline 51 can be maintained by the setting of the pressure reducing valve 6.

[0062] Optionally, the Brownian gas flame-stabilized methanol combustion system 010 further includes a pneumatic relief valve 9, which is arranged in the Brownian gas pipeline 51 and located between the first cut-off valve 8 and the second cut-off valve 11; the setting of the pneumatic relief valve 9 can play a role in safe relief and system protection.

[0063] Optionally, the Brown's gas flame-stabilized methanol combustion system 010 also includes a leak detection switch 10, which is arranged in the Brown's gas pipeline 51 and is located between the first shut-off valve 8 and the second shut-off valve 11; the setting of the leak detection switch 10 can reliably monitor whether there is a leak in the Brown's gas pipeline 51.

[0064] The Brownian gas flame-stabilized methanol combustion system 010 of this embodiment also includes a methanol storage tank 16 . One end of the methanol pipeline 52 away from the burner 56 is connected to the methanol storage tank 16 . The methanol storage tank 16 is used to store methanol and provide methanol to the methanol pipeline 52 .

[0065] Optionally, the Brownian gas flame-stabilized methanol combustion system 010 further includes a reflux pipeline, the inlet and outlet ends of which are both connected to the methanol pipeline 52 , so that the methanol overflowing from the methanol pipeline 52 to the reflux pipeline flows back to the methanol pipeline 52 .

[0066] Furthermore, a fifth valve 25, an overflow return valve 24 and a sixth valve 19 are provided on the return pipeline, and the fifth valve 25, the overflow return valve 24 and the sixth valve 19 are distributed in sequence from the inlet end to the outlet end of the return pipeline.

[0067] In this embodiment, the Brown gas flame-stabilized methanol combustion system 010 includes two methanol pipelines 52, which are connected in parallel with the methanol storage tank 16, and the methanol storage tank 16 is selectively connected to the burner 56 through one of the two methanol pipelines 52; with such a configuration, when the system is used to burn methanol, one of the methanol pipelines 52 can be used to transport methanol, and the other methanol pipeline 52 can be used as a backup, thereby improving the problem that when there is only one methanol pipeline 52, it is impossible to maintain it in time when a failure occurs, resulting in the system being unusable and the efficiency being reduced.

[0068] Of course, in other embodiments, the number of methanol pipelines 52 of the Brownian gas flame-stabilized methanol combustion system 010 can also be one, three, etc., which is not specifically limited here.

[0069] Furthermore, the Brown gas flame-stabilized methanol combustion system 010 further includes a third valve 20, a methanol pump 21 and a second filter 22; along the direction in which methanol is transported from the methanol pipeline 52 to the burner 56, the methanol pump 21 and the second filter 22 are sequentially arranged in the methanol pipeline 52, and the methanol pipeline 52 upstream of the methanol pump 21 and the methanol pipeline 52 downstream of the second filter 22 are both provided with the third valve 20. The setting of the methanol pump 21 can provide the power for transporting methanol in the methanol pipeline 52, and the methanol pump 21 can be used to regulate the flow rate and delivery pressure of methanol; the setting of the second filter 22 can reduce impurities in the methanol pipeline 52 and improve the problem of blockage of the methanol pipeline 52; the setting of the third valve 20 can regulate the on-off and flow rate of the methanol pipeline 52, and provide a safety protection effect.

[0070] Of course, in other embodiments, the third valve 20 may be provided in one of the methanol pipeline 52 upstream of the methanol pump 21 and the methanol pipeline 52 downstream of the second filter 22 .

[0071] It should be noted that the two methanol pipelines 52 are both connected to the outlet end of the reflux pipeline; in this way, it can be ensured that when any one of the two methanol pipelines 52 is used, the reflux pipeline can be used to reflux methanol.

[0072] Optionally, the Brownian gas flame-stabilized methanol combustion system 010 further includes a flow meter 23, and the flow meter 23 is arranged in the methanol pipeline 52. The arrangement of the flow meter 23 can detect the flow rate of methanol in real time.

[0073] Further, the methanol pipeline 52 upstream and the methanol pipeline 52 downstream of the flow meter 23 are both provided with a third valve 20. Of course, in other embodiments, the methanol pipeline 52 upstream and the methanol pipeline 52 downstream of the flow meter 23 are both not provided with the third valve 20, or one of the methanol pipeline 52 upstream and the methanol pipeline 52 downstream of the flow meter 23 is provided with the third valve 20.

[0074] The components arranged on the two methanol pipelines 52 of this embodiment are not completely the same. The Brownian gas flame-stabilized methanol combustion system 010 also includes a branch pipeline 59. The two methanol pipelines 52 are also connected via the branch pipeline 59, and one of the methanol pipelines 52 is provided with a flow meter 23, while the other methanol pipeline 52 is not provided with a flow meter 23. The connection position between the branch pipeline 59 and the methanol pipeline 52 provided with the flow meter 23 is located upstream of the flow meter 23. When transporting methanol, the other methanol pipeline 52 can allow methanol to flow through the flow meter 23 through the branch pipeline 59 to measure the flow rate and then transport it to the burner 56. In this way, the investment in the flow meter 23 can be reduced, thereby reducing costs.

[0075] Optionally, two third valves 20 are provided between the second filter 22 of the methanol pipeline 52 and the flowmeter 23 , and the connection position between the branch pipeline 59 and the methanol pipeline 52 provided with the flowmeter 23 is located between the two third valves 20 .

[0076] Furthermore, the methanol pipeline 52 without the flowmeter 23 is also provided with a fourth valve 60, and the fourth valve 60 is located downstream of the connection between the branch pipeline 59 and the methanol pipeline 52 without the flowmeter 23, that is, the connection between the branch pipeline 59 and the methanol pipeline 52 without the flowmeter 23 is located between the third valve 20 and the fourth valve 60 provided on the corresponding methanol pipeline 52 and located downstream of the second filter 22; in this way, when a partial failure occurs in the methanol pipeline 52 provided with the flowmeter 23, the fourth valve 60 can also be opened to allow the methanol pipeline 52 without the flowmeter 23 to directly transport methanol to the burner 56 without passing through the flowmeter 23.

[0077] The Brown gas flame-stabilized methanol combustion system 010 of the present embodiment also includes a delivery pipeline, a pressure sensor 26, a first controller 27, a frequency converter 28, a first opening valve 31, a second controller 58 and a temperature detection element; the methanol pipeline 52 is connected to the burner 56 through the delivery pipeline, and the inlet end of the reflux pipeline is connected to the methanol pipeline 52 through the delivery pipeline; the pressure sensor 26 and the first opening valve 31 are both arranged in the delivery pipeline, and the inlet end of the reflux pipeline is located upstream of the pressure sensor 26; the methanol pump 21 is electrically connected to the frequency converter 28, and the frequency converter 28 and the pressure sensor 26 are both electrically connected to the first controller 27, and the first controller 27 is used to control the frequency converter 28 to adjust the methanol pressure delivered by the methanol pump 21 according to the pressure detected by the pressure sensor 26; the temperature detection element and the first opening valve 31 are both electrically connected to the second controller 58, and the second controller 58 is configured to control the first opening valve 31 to adjust the methanol flow delivered by the delivery pipeline according to the temperature detected by the temperature detection element; the temperature detection element includes but is not limited to a thermocouple 57 and a temperature sensor.

[0078] With such a configuration, the flow rate and delivery pressure of methanol can be more flexibly regulated as needed to ensure the stability of methanol pressure and improve the stability of methanol combustion. For example, when the pressure sensor 26 detects that the pressure of the delivery pipeline is reduced, the first controller 27 receives the first detection signal of the pressure sensor 26 and controls the frequency converter 28 to regulate the methanol pump 21 to increase the delivery pressure of methanol. When the pressure sensor 26 detects that the pressure of the delivery pipeline is increased, the first controller 27 receives the second detection signal of the pressure sensor 26 and controls the frequency converter 28 to regulate the methanol pump 21 to reduce the delivery pressure of methanol. And the flow rate of methanol can be ensured. And adapted to the required temperature size, for example: when the Brown gas steady flame methanol combustion system 010 is used for kiln furnace calcining ceramic products, if the temperature detection component detects that the temperature is lower than the temperature required for calcination, the second controller 58 receives the first signal sent by the temperature detection component, and can control the first opening valve 31 to increase the methanol flow rate transported by the delivery pipeline to enhance combustion and achieve temperature increase. Similarly, if the temperature detection component detects that the temperature is higher than the temperature required for calcination, the second controller 58 receives the second signal generated by the temperature detection component, and can control the first opening valve 31 to reduce the methanol flow rate transported by the delivery pipeline to reduce the heat input and achieve cooling.

[0079] Optionally, the Brown gas flame-stabilized methanol combustion system 010 further includes a seventh valve 29, a second pressure gauge 30, a fourth cut-off valve 32 and a second fine-tuning valve 33 arranged in the delivery pipeline, the seventh valve 29 and the second pressure gauge 30 are both arranged between the pressure sensor 26 and the first opening valve 31, and the seventh valve 29 is located upstream of the second pressure gauge 30, the fourth cut-off valve 32 and the second fine-tuning valve 33 are both located downstream of the first opening valve 31, and the fourth cut-off valve 32 is located upstream of the second fine-tuning valve 33. As one of the total opening valves of the delivery pipeline, the fourth cut-off valve 32 can quickly cut off the delivery pipeline when the methanol flame is extinguished to prevent the flame from being extinguished and still transporting fuel, causing a dangerous situation; the seventh valve 29 and the second fine-tuning valve 33 can be used to regulate the flow rate of methanol delivery, and the second pressure gauge 30 can provide real-time feedback on the pressure of the delivery pipeline, so that workers can grasp the pressure of the delivery pipeline in time and reduce the occurrence of dangerous situations.

[0080] Optionally, the Brown gas flame-stabilized methanol combustion system 010 further includes a second valve 17 and a first filter 18, the methanol storage tank 16 is connected to an output pipe, the methanol pipeline 52 is connected to the methanol storage tank 16 through the output pipe, the second valve 17 and the first filter 18 are both arranged on the output pipe, and the connection position between the methanol pipeline 52 and the output pipe is located downstream of the first filter 18. The second valve 17 can be used as one of the main switches for the methanol storage tank 16 to output methanol, and the first filter 18 can reduce the transportation of solid impurities in the methanol pipeline 52, thereby improving the problem of the methanol pipeline 52 being blocked.

[0081] The Brownian gas flame-stabilized methanol combustion system 010 of the present embodiment further includes a pressure-stabilizing valve 35 , which is disposed in the atomizing air duct 54 ; the pressure-stabilizing valve 35 is used to maintain a stable pressure in the atomizing air duct 54 to ensure a good atomization effect of methanol.

[0082] Furthermore, the Brown gas flame-stabilized methanol combustion system 010 further includes a first blower 34 (e.g., a Roots blower), an eighth valve 36, and a third pressure gauge 37. The first blower 34 is connected to the input end of the atomizing air pipeline 54, and the eighth valve 36 and the third pressure gauge 37 are sequentially arranged downstream of the pressure-stabilizing valve 35. The eighth valve 36 can be used to control the opening and closing of the atomizing air pipeline 54, and the third pressure gauge 37 can provide real-time feedback on the pressure of the atomizing air pipeline 54.

[0083] The Brown gas flame-stabilized methanol combustion system 010 of this embodiment further includes a second fan 38 and a second opening valve 39. The second fan 38 is arranged at the input end of the combustion-supporting gas pipeline 53, and the second opening valve 39 is arranged in the combustion-supporting gas pipeline 53. The setting of the second opening valve 39 can adjust the amount of combustion-supporting gas delivered by the combustion-supporting gas pipeline 53 to ensure sufficient combustion of methanol.

[0084] Optionally, the combustion-supporting gas pipeline 53 is also provided with a manual calibrated valve 40, which is located upstream or downstream of the second opening valve 39; when using the system, the opening of the manual calibrated valve 40 can be manually adjusted as needed to make the flow of the combustion-supporting gas more controllable.

[0085] Optionally, the Brown's gas flame-stabilized methanol combustion system 010 further includes a nitrogen pipeline 55, which is connected to the Brown's gas pipeline 51 and is used to deliver nitrogen to the Brown's gas pipeline 51 and the burner 56. In this way, when using the system to burn methanol, nitrogen can be first introduced into the Brown's gas pipeline 51 through the nitrogen pipeline 55 for purging, and the purging can be stopped after the residual gas in the Brown's gas pipeline 51 is discharged, so as to ensure the cleanliness and stability of subsequent combustion.

[0086] Furthermore, a third shut-off valve 61 is provided on the nitrogen pipeline 55 to control the opening and closing of the nitrogen pipeline 55 .

[0087] Optionally, the position where the nitrogen pipeline 55 is connected to the Brownian gas pipeline 51 can be upstream of the first fine-tuning valve 13 and downstream of the second shut-off valve 11. In this way, the sufficiency of purging the Brownian gas pipeline 51 with nitrogen can be ensured.

[0088] Optionally, the first cut-off valve 8, the second cut-off valve 11, the third cut-off valve 61 and the fourth cut-off valve 32 all include but are not limited to solenoid cut-off valves and ball valves; the first valve 3, the second valve 17, the third valve 20, the fourth valve 60, the fifth valve 25, the sixth valve 19, the seventh valve 29 and the eighth valve 36 all include but are not limited to ball valves and solenoid valves; the first fine-tuning valve 13 and the second fine-tuning valve 33 both include but are not limited to manual fine-tuning valves and electric fine-tuning valves; the first opening valve 31 and the second opening valve 39 both include but are not limited to electric actuators, solenoid valves, and electric valves.

[0089] Optionally, see Figure 2 The burner 56 includes a shell 70, a Brownian gas pipeline 81, an atomizing air pipeline 82 and a methanol pipeline 83. The shell 70 has a cavity 71, and the cavity 71 is connected to the combustion-supporting gas pipeline 53 for conveying the combustion-supporting gas; the shell 70 has a first end and a second end that are relatively distributed, and the second end is provided with an air outlet 72 that is connected to the cavity 71, and the combustion-supporting gas can be blown out from the air outlet 72; the two ends of the Brownian gas pipeline 81 are plugged into the first end and the second end of the shell 70, and the end of the Brownian gas pipeline 81 that is plugged into the first end of the shell 70 is connected to the Brownian gas pipeline 51, so that the Brownian gas is output from the end of the Brownian gas pipeline 81 that is plugged into the second end of the shell 70, and the Brownian gas can be ignited at the second end of the shell 70 to form a Brownian gas Flame; both ends of the atomizing air duct 82 are plugged into the first end and the second end of the outer shell 70, and one end of the atomizing air duct 82 plugged into the first end of the outer shell 70 is connected to the atomizing air duct 54; one end of the methanol pipeline 83 is plugged into the first end of the outer shell 70 and connected to the delivery pipeline, the other end of the methanol pipeline 83 is connected to the atomizing air duct 82, and the connection between the methanol pipeline 83 and the atomizing air duct 82 is close to the second end of the outer shell 70. When the methanol transported by the methanol pipeline 83 enters the atomizing air duct 82, the methanol can be atomized by the atomizing air in the atomizing air duct 82, and the atomized methanol can be output from one end of the atomizing air duct 82 plugged into the second end of the outer shell 70, and ignited using the Brown gas flame as an ignition source.

[0090] This embodiment also provides a Brown's gas flame-stabilized methanol combustion method, using the aforementioned Brown's gas flame-stabilized methanol combustion system 010 to burn methanol in a kiln furnace; the Brown's gas flame-stabilized methanol combustion method comprises:

[0091] Purging the Brownian gas pipeline 51 with nitrogen, and stopping the purging after exhausting the residual gas in the Brownian gas pipeline 51;

[0092] The combustion-supporting gas is transported to the burner 56 by using the combustion-supporting gas pipeline 53, and the combustion-supporting gas is kept flowing in the burner 56;

[0093] The Brown's gas is delivered to the burner 56 by means of the Brown's gas pipeline 51, and the Brown's gas delivered to the burner 56 is ignited to form a Brown's gas flame;

[0094] The atomizing air is delivered to the burner 56 by the atomizing air pipeline 54, and the methanol is delivered to the burner 56 by the methanol pipeline 52, and the methanol entering the burner 56 is atomized by the atomizing air;

[0095] Atomized methanol is ignited using a Brown's gas flame as an ignition source.

[0096] It should be noted that when burning methanol, the Brownian gas flame serves as a stable ignition source. During the entire methanol combustion process, the Brownian gas needs to be kept burning to maintain a continuous supply of the fire source.

[0097] Optionally, the Brownian gas flame-stabilized methanol combustion method also includes: when the temperature of methanol combustion is lower than a first preset value, increasing the flow rate delivered to the burner 56 to increase the temperature of the furnace of the kiln; when the temperature of methanol combustion is higher than a second preset value, reducing the flow rate delivered to the burner 56 to lower the temperature of the furnace of the kiln. For example, when the Brownian gas flame-stabilized methanol combustion system 010 is used to calcine ceramic products in a kiln, if the temperature detection component detects that the temperature is lower than the first preset value, the second controller 58 receives a first signal sent by the temperature detection component, and then controls the first opening valve 31 to increase the flow rate of methanol delivered by the delivery pipeline to enhance combustion and achieve temperature increase. If the temperature detection component detects that the temperature is higher than the second preset value, the second controller 58 receives a second signal generated by the temperature detection component, and then controls the first opening valve 31 to reduce the flow rate of methanol delivered by the delivery pipeline to reduce heat input and achieve temperature reduction.

[0098] Optionally, the first preset value is less than the second preset value; in other embodiments, the first preset value may also be equal to the second preset value, which is not specifically limited here.

[0099] Optionally, when the flow rate of methanol increases, the pressure and flow rate of the atomizing air can be increased to ensure that a large amount of methanol can be reliably atomized; when the flow rate of methanol decreases, the pressure and flow rate of the atomizing air can be reduced to improve the problem of excessive atomization and output of methanol.

[0100] Optionally, when burning methanol, the amount of the combustion-supporting gas may be adjusted to ensure sufficient combustion of the methanol; for example, when the amount of atomized methanol increases, the amount of the combustion-supporting gas may be increased, and when the amount of atomized methanol decreases, the amount of the combustion-supporting gas may be decreased.

[0101] In summary, the Brownian gas flame-stabilized methanol combustion system 010 and method of the present invention can ensure efficient combustion of methanol and ensure full combustion of methanol, improve the problem of incomplete combustion of methanol, and reduce carbon emissions.

[0102] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A Brown gas flame-stabilized methanol combustion system, characterized in that: include: Burner (56); a Brownian gas pipeline (51), the Brownian gas pipeline (51) being connected to the burner (56) and being used for conveying Brownian gas to the burner (56) and being capable of forming a Brownian gas flame at the burner (56); a methanol pipeline (52), the methanol pipeline (52) being connected to the burner (56) and used for conveying methanol toward the burner (56); a combustion-supporting gas pipeline (53), the combustion-supporting gas pipeline (53) being connected to the burner (56) and used for supplying the combustion-supporting gas to the burner (56); as well as, An atomizing air pipeline (54), wherein the atomizing air pipeline (54) is connected to the burner (56) and is used to deliver atomizing air to the burner (56) so as to atomize the methanol delivered to the burner (56), wherein the atomized methanol can use the Brownian gas flame as an ignition source.

2. The Brown gas flame-stabilized methanol combustion system according to claim 1, characterized in that: The Brown's gas flame-stabilizing methanol combustion system further comprises a first pressure gauge (7) and a first shut-off valve (8), and the first pressure gauge (7) and the first shut-off valve (8) are sequentially arranged on the Brown's gas pipeline (51) along the direction in which the Brown's gas is transported to the burner (56) on the Brown's gas pipeline (51); The first shut-off valve (8) is configured to close the Brownian gas pipeline (51) when the first pressure gauge (7) detects that the pressure of the Brownian gas pipeline (51) is greater than or equal to a first preset pressure.

3. The Brown gas flame-stabilized methanol combustion system according to claim 2, characterized in that: The Brown's gas flame-stabilized methanol combustion system further comprises a water electrolysis device (1), wherein the water electrolysis device (1) is connected to an end of the Brown's gas pipeline (51) away from the burner (56) and is used to provide Brown's gas to the Brown's gas pipeline (51); and / or, The Brown's gas flame-stabilized methanol combustion system also includes a first valve (3), a water vapor separation device (4), a second shut-off valve (11), and a first fine-tuning valve (13); along the direction in which the Brown's gas is transported to the burner (56) in the Brown's gas pipeline (51), the water vapor separation device (4), the first pressure gauge (7), the first shut-off valve (8), the second shut-off valve (11) and the first fine-tuning valve (13) are sequentially arranged in the Brown's gas pipeline (51); at least one of the Brown's gas pipeline (51) upstream of the water vapor separation device (4) and the Brown's gas pipeline (51) downstream of the water vapor separation device (4) is provided with the first valve (3); wherein the second shut-off valve (11) is configured to control the opening and closing of the Brown's gas pipeline (51).

4. The Brown gas flame-stabilized methanol combustion system according to claim 3, characterized in that: The Brownian gas flame-stabilized methanol combustion system further comprises a first flame arrester (2), wherein the first flame arrester (2) is arranged in the Brownian gas pipeline (51) and is located between the water electrolysis device (1) and the water vapor separation device (4); and / or, The Brownian gas flame-stabilized methanol combustion system further comprises a second flame arrester (14), wherein the second flame arrester (14) is arranged in the Brownian gas pipeline (51) and is located downstream of the first fine-tuning valve (13); and / or, The Brown gas flame-stabilized methanol combustion system further comprises a pressure reducing valve (6), wherein the pressure reducing valve (6) is arranged on the Brown gas pipeline (51) and is located between the water vapor separation device (4) and the first pressure gauge (7); and / or, The Brown's gas flame-stabilized methanol combustion system further comprises a pneumatic relief valve (9), wherein the pneumatic relief valve (9) is arranged in the Brown's gas pipeline (51) and is located between the first shut-off valve (8) and the second shut-off valve (11); and / or, The Brown's gas flame-stabilized methanol combustion system further comprises a leak detection switch (10), which is arranged in the Brown's gas pipeline (51) and located between the first shut-off valve (8) and the second shut-off valve (11).

5. The Brown gas flame-stabilized methanol combustion system according to claim 1, characterized in that: The Brown's gas flame-stabilized methanol combustion system further comprises a nitrogen pipeline (55), wherein the nitrogen pipeline (55) is connected to the Brown's gas pipeline (51) and is used to transport nitrogen to the Brown's gas pipeline (51) and the burner (56).

6. The Brown gas flame-stabilized methanol combustion system according to any one of claims 1 to 5, characterized in that: The Brown gas flame-stabilized methanol combustion system further comprises a methanol storage tank (16), and one end of the methanol pipeline (52) away from the burner (56) is connected to the methanol storage tank (16); and / or, The Brown gas flame-stabilized methanol combustion system also includes a reflux pipeline, the inlet and outlet ends of which are both connected to the methanol pipeline (52) so that the methanol overflowing from the methanol pipeline (52) to the reflux pipeline flows back to the methanol pipeline (52).

7. The Brown gas flame-stabilized methanol combustion system according to claim 6, characterized in that: The Brown gas flame-stabilized methanol combustion system comprises two methanol pipelines (52), the two methanol pipelines (52) are connected in parallel with the methanol storage tank (16), and the methanol storage tank (16) is selectively connected to the burner (56) through one of the two methanol pipelines (52); and / or, The Brown gas flame-stabilized methanol combustion system also includes a second valve (17) and a first filter (18); the methanol storage tank (16) is connected to an output pipe; the methanol pipeline (52) is connected to the methanol storage tank (16) via the output pipe; the second valve (17) and the first filter (18) are both arranged on the output pipe.

8. The Brown gas flame-stabilized methanol combustion system according to any one of claims 1 to 5, characterized in that: The Brown gas flame-stabilized methanol combustion system also includes a third valve (20), a methanol pump (21) and a second filter (22). Along the direction in which methanol is transported from the methanol pipeline (52) to the burner (56), the methanol pump (21) and the second filter (22) are sequentially arranged in the methanol pipeline (52), and at least one of the methanol pipeline (52) upstream of the methanol pump (21) and the methanol pipeline (52) downstream of the second filter (22) is provided with the third valve (20).

9. The Brown gas flame-stabilized methanol combustion system according to claim 8, characterized in that: The Brown gas flame-stabilized methanol combustion system further comprises a flow meter (23), wherein the flow meter (23) is arranged on the methanol pipeline (52); and / or, The Brown gas flame-stabilized methanol combustion system further comprises a delivery pipeline, a pressure sensor (26), a first controller (27), a frequency converter (28), a first opening valve (31), a second controller (58) and a temperature detection element. The methanol pipeline (52) is connected to the burner (56) through the delivery pipeline. The pressure sensor (26) and the first opening valve (31) are both arranged on the delivery pipeline. The methanol pump (21) is electrically connected to the frequency converter (28). The frequency converter (28) and the pressure sensor (26) are both electrically connected to the first controller (27). The first controller (27) is used to control the frequency converter (28) to adjust the pressure of the methanol delivered by the methanol pump (21) according to the pressure detected by the pressure sensor (26). The temperature detection element and the first opening valve (31) are both electrically connected to the second controller (58). The second controller (58) is configured to control the first opening valve (31) to adjust the flow rate of the methanol delivered by the delivery pipeline according to the temperature detected by the temperature detection element.

10. The Brown gas flame-stabilized methanol combustion system according to claim 1, characterized in that: The Brown gas flame-stabilized methanol combustion system further comprises a pressure stabilizing valve (35), wherein the pressure stabilizing valve (35) is arranged on the atomizing air pipeline (54); and / or, The Brown gas flame-stabilized methanol combustion system further comprises a second opening valve (39), wherein the second opening valve (39) is arranged on the combustion-supporting gas pipeline (53).

11. A Brown's gas flame-stabilized methanol combustion method, characterized in that: The Brown's gas flame-stabilized methanol combustion system according to any one of claims 1 to 10 is used to burn methanol in a kiln furnace; the Brown's gas flame-stabilized methanol combustion method comprises: Purging the Brownian gas pipeline (51) with nitrogen, and stopping the purging after exhausting the residual gas in the Brownian gas pipeline (51); Using the combustion-supporting gas pipeline (53) to transport the combustion-supporting gas to the burner (56), and maintaining the flow of the combustion-supporting gas in the burner (56); Using the Brown's gas pipeline (51) to transport the Brown's gas to the burner (56), and igniting the Brown's gas transported to the burner (56) to form the Brown's gas flame; The atomizing air pipeline (54) is used to transport the atomizing air to the burner (56), and the methanol pipeline (52) is used to transport the methanol to the burner (56), so that the methanol entering the burner (56) is atomized by the atomizing air; The atomized methanol is ignited using the Brown gas flame as the ignition source.

12. The Brown gas flame-stabilized methanol combustion method according to claim 11, characterized in that: Also includes: When the temperature of the methanol during combustion is lower than a first preset value, increasing the flow rate delivered to the burner (56) to increase the temperature of the furnace of the kiln; When the temperature of the methanol during combustion is higher than a second preset value, the flow rate delivered to the burner (56) is reduced to lower the temperature of the furnace chamber of the kiln.

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