A partial oxidation burner and its working method

Abstract

The present invention discloses a partial oxidation burner and its working method. The partial oxidation burner includes: an air flow homogenization chamber for inputting air, fuel gas, and a combustion substrate and mixing them to obtain a gas-solid admixture; a combustion chamber including a combustion chamber precursor, a partition plate, and a combustion chamber successor; wherein, the partition plate which can be opened and closed is disposed between the combustion chamber precursor and the combustion chamber successor, and the partition plate is used to realize the connection or separation between the combustion chamber precursor and the combustion chamber successor; an ignition device disposed in the combustion chamber precursor. The technical solution provided by the present invention can solve the technical defects of the common problems of safety explosion protection, tar generation and its derivative hazards in the existing burners.

Description

Technical Field

[0001] The present invention belongs to the technical field of burners, and particularly relates to a partial oxidation burner and its working method. Background Art

[0002] Burners have a wide range of target groups, covering fields such as boilers, smelting furnaces, melting furnaces, heat treatment, etc., and are an essential part of combustion systems in industries related to heat energy. Burners themselves have the advantages of low investment, high furnace heat load, good heat transfer effect, small equipment maintenance workload, and low emissions of pollutants from fuel and gas combustion. These advantages provide good basic conditions for the development of burners.

[0003] Currently, burners in the prior art generally adopt the method of using air as the oxidation medium and then mixing it with fuel for oxidation combustion; this method poses special requirements for the safety and explosion protection of burners. If handled improperly by humans or the burner material does not meet the standards, it is extremely easy to generate safety hazards such as explosions; in addition, tar is easily formed during the material combustion process, which will lead to incomplete combustion, causing energy waste. The tar in the burner gradually accumulates and adheres to the pipe wall, which is extremely easy to cause a series of problems threatening the safety of pipelines and equipment, such as corrosion, scaling, and blockage, and will also cause environmental organic matter emission pollution. Summary of the Invention

[0004] The purpose of the present invention is to provide a partial oxidation burner and its working method to solve one or more of the above-mentioned technical problems. The technical solution provided by the present invention can solve the technical defects of the burners in the prior art, such as the common problems of safety explosion protection, tar generation, and its derived hazards.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A partial oxidation burner provided by the present invention includes:

[0007] An air flow homogenization chamber, which is used to input air, gas, and combustion substrate and mix them to obtain a gas-solid admixture; wherein, in the gas-solid admixture, the volume ratio of gas to oxygen is 60% - 95%;

[0008] Combustion chamber, the combustion chamber includes a combustion chamber front section, a partition plate, and a combustion chamber rear section; wherein, a partition plate that can be opened and closed is provided between the combustion chamber front section and the combustion chamber rear section, and the partition plate is used to realize the connection or separation between the combustion chamber front section and the combustion chamber rear section; the combustion chamber front section is used to input the gas-solid admixture and ammonia, the gas-solid admixture and the ammonia form a reducing atmosphere, the gas-solid admixture undergoes partial oxidation combustion in the reducing atmosphere, and the ammonia is also used for primary acid removal during partial oxidation combustion, outputting a front combustion product and remaining ammonia; the combustion chamber rear section is used to input water vapor, as well as the front combustion product and remaining ammonia output by the combustion chamber front section, the remaining ammonia and the water vapor are used to reform and perform secondary acid removal on the front combustion product, the water vapor is also used for solid dust removal of the front combustion product and tail gas cooling, and the remaining ammonia is also used as a heat carrier to provide the energy required for secondary acid removal, outputting a rear combustion product;

[0009] Ignition device, the ignition device is arranged inside the combustion chamber front section.

[0010] A further improvement of the present invention lies in that the partial oxidation burner is of a horizontal structure, and the cross-sectional area of the combustion chamber front section is larger than the cross-sectional area of the combustion chamber rear section;

[0011] A combustion transition conical tube is also arranged between the partition plate and the combustion chamber rear section.

[0012] A further improvement of the present invention lies in that the combustion chamber front section is provided with an ammonia injection valve, the combustion chamber rear section is provided with a water vapor injection valve, and the periphery is wrapped with a membrane water wall.

[0013] A further improvement of the present invention lies in that the ignition device is a continuous electric pulse ignition device.

[0014] A further improvement of the present invention lies in that the positive and negative electrodes of the continuous electric pulse ignition device are respectively nested in ceramic sleeves and extend into the combustion chamber front section, and are close to each other on the axis of the combustion chamber front section.

[0015] A further improvement of the present invention lies in that the air flow homogenization chamber is externally connected with a gas inlet and an air-entrained combustion material inlet, and internally provided with an outer rotary ventilation hole runner, an inner rotary ventilation hole runner, and a bracket;

[0016] Wherein, the runner diameter of the inner rotary ventilation hole runner in the air flow homogenization chamber is smaller than the runner diameter of the outer rotary ventilation hole runner.

[0017] A further improvement of the present invention lies in that the axis of the gas inlet and the axis of the air-entrained combustion material inlet are perpendicular to each other in a plane.

[0018] A further improvement of the present invention lies in that the combustion chamber front section is also provided with a swirl air distributor.

[0019] A working method of a partial oxidation burner provided by the present invention includes the following steps:

[0020] Air, fuel gas, and combustion substrate are input into the air flow homogenization chamber and mixed to obtain a gas-solid admixture; wherein, in the gas-solid admixture, the volume ratio of the fuel gas to oxygen is 60% - 95%;

[0021] The partition plate is used to separate the front part of the combustion chamber from the rear part of the combustion chamber. The front part of the combustion chamber inputs the gas-solid admixture and ammonia gas. The gas-solid admixture and the ammonia gas form a reducing atmosphere. Ignition is carried out through an ignition device. The gas-solid admixture undergoes partial oxidation combustion in the reducing atmosphere, and the ammonia gas undergoes primary acid removal during partial oxidation combustion, and the precursor combustion products and the remaining ammonia gas are output;

[0022] The partition plate is used to connect the front part of the combustion chamber and the rear part of the combustion chamber. The rear part of the combustion chamber inputs water vapor, the precursor combustion products and the remaining ammonia gas output from the front part of the combustion chamber. The remaining ammonia gas and the water vapor carry out reforming and secondary acid removal on the precursor combustion products. The water vapor performs solid dust removal and tail gas cooling on the precursor combustion products. The remaining ammonia gas provides the energy required for secondary acid removal as a heat carrier, and the rear part combustion products are output.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The partial oxidation burner provided by the present invention is provided with an air flow homogenization chamber, and adopts a carrier gas mixing mode with "fuel gas as the main and oxygen as the auxiliary"; it is provided with a combustion chamber, suspends the combustion materials in the front part of the combustion chamber, and at the same time introduces ammonia gas to further form a reducing atmosphere, providing a partial oxidation environment for the combustion materials. With the help of an ignition device, partial oxidation combustion of the combustion materials is realized, and the generated energy is used for subsequent degradation of the combustion materials; ultimately, partial oxidation combustion can be achieved, thereby reducing the generation and derivative hazards of tar and reducing potential safety hazards. Further specifically, the purpose of the technical solution of the embodiment of the present invention is to mix air into the fuel gas to create a partial oxidation environment, cooperate with the ignition device to achieve partial oxidation combustion, introduce ammonia gas to further enhance the reducibility of the front part of the combustion chamber, preliminarily remove the acid generated during partial oxidation combustion, and at the same time react further with water vapor in the rear part of the combustion chamber to remove the acid generated during partial oxidation combustion. The introduced water vapor also plays the role of physical dust removal and physical cooling, and at the same time, rely on the energy provided by the gas heat carrier to carry out a reforming reaction with the combustion materials and products. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments or the prior art; obviously, the drawings in the following description are some embodiments of the present invention, and for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is an overall structural schematic diagram of a partial oxidation burner provided by an embodiment of the present invention;

[0027] In the figure, 1 is a gas inlet; 2 is an inner-rotating ventilation hole runner; 3 is an outer-rotating ventilation hole runner; 4 is a bracket; 5 is a ceramic sleeve; 6 is an air-entrained combustion material inlet; 7 is an air flow homogenization chamber; 8 is a swirl air distributor; 9 is an ammonia injection valve; 10 is a partition; 11 is a continuous electric pulse ignition device; 12 is a combustion transition conical tube; 13 is a water vapor injection valve; 14 is the rear drive of the combustion chamber; 15 is a tail gas collection port; 16 is a residue collection port; 17 is the front drive of the combustion chamber. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] The following further describes the present invention in detail with reference to the drawings:

[0031] Please refer to Figure 1 , a partial oxidation burner structure provided by an embodiment of the present invention, includes:

[0032] The air homogenization bin 7 is used to achieve the mixing of air, fuel gas and combustion substrate to obtain a gas-solid admixture. Among them, in the gas-solid admixture, the volume ratio of fuel gas to oxygen is 60% - 95%.

[0033] The combustion chamber includes a combustion chamber precursor 17, a partition plate 10 and a combustion chamber successor 14. Among them, the partition plate 10 is disposed between the combustion chamber precursor 17 and the combustion chamber successor 14 in an openable and closable manner to achieve the connection and separation of the combustion chamber precursor 17 and the combustion chamber successor 14. Additionally, for further explanation, the combustion chamber precursor 17 is used to input the obtained gas-solid admixture and ammonia. Both the gas-solid admixture and ammonia can form a reducing atmosphere. The gas-solid admixture undergoes partial oxidation combustion in the reducing atmosphere, and ammonia is also used for primary acid removal during partial oxidation combustion, outputting precursor combustion products and remaining ammonia. The combustion chamber successor 14 is used to input water vapor, as well as the precursor combustion products and remaining ammonia output by the combustion chamber precursor 17. The ammonia and the water vapor perform reforming and secondary acid removal on the precursor combustion products. The water vapor is also used for solid dust removal of the precursor combustion products and tail gas cooling, and the ammonia is also used as a heat carrier to provide the energy required for secondary acid removal, outputting successor combustion products.

[0034] The ignition device is disposed inside the combustion chamber precursor 17.

[0035] In the technical solution provided by the embodiment of the present invention, the partial oxidation burner adopts a carrier gas mixing mode of "mainly fuel gas and supplemented by oxygen", suspends the combustion material in the combustion chamber precursor, and simultaneously introduces ammonia to further form a reducing atmosphere, providing a partial oxidation environment for the combustion material. With the help of the ignition device, partial oxidation combustion of the combustion material is achieved, and the generated energy is used for subsequent degradation of the combustion material. Ultimately, partial oxidation combustion can be realized, thereby reducing the generation and derivative hazards of tar and reducing potential safety hazards. Further specifically for explanation, the purpose of the technical solution of the embodiment of the present invention is to mix air into the fuel gas to create a partial oxidation environment, cooperate with the ignition device to achieve partial oxidation combustion, introduce ammonia to further enhance the reducibility of the combustion chamber precursor, preliminarily remove the acid generated during partial oxidation combustion, and simultaneously react further with water vapor in the combustion chamber successor to remove the acid generated during partial oxidation combustion. The introduced water vapor also has the effects of physical dust removal and physical cooling, and at the same time, rely on the energy provided by the gas heat carrier to carry out a reforming reaction with the combustion material and products.

[0036] In the embodiment of the present invention, it is further preferred that a combustion transition cone tube 12 is further provided between the partition 10 and the combustion chamber rear drive 14; specifically, the partition 10 is located at the junction of the combustion chamber front drive 17 and the combustion transition cone tube 12; wherein, the cross-sectional area of ​​the combustion chamber front drive 17 is larger than the cross-sectional area of ​​the combustion chamber rear drive 14, and the combustion transition cone tube 12 should not be too long to prevent excessive heat loss.

[0037] In the embodiment of the present invention, further specifically and exemplarily, the combustion chamber precursor 17 is provided with an ammonia injection valve 9, and the combustion chamber afterdrive 14 is provided with a water vapor injection valve 13, and is wrapped around with a membrane water-cooled wall; specifically and preferably, the membrane water-cooled wall of the combustion chamber forms a cone angle with the extension line of the outer wall of the combustion chamber precursor 17. In the embodiment of the present invention, ammonia is introduced with the aid of the ammonia injection valve 9 to further form a partial oxidation environment, and the combustion chamber precursor 17 participates in the first stage of deacidification, and the combustion chamber afterdrive 14 participates in the second stage of deacidification, and at the same time, it enters the combustion chamber afterdrive 14 as a gas heat carrier, thereby improving the capacity utilization efficiency and reducing pollution; water vapor is injected into the combustion chamber afterdrive 14 with the aid of the water vapor injection valve 13, and participates in the reforming reaction and the second stage of ammonia deacidification, while removing dust and reducing the exhaust gas temperature, which is helpful for exhaust gas deacidification and extending the service life of the equipment.

[0038] In the embodiment of the present invention, further specifically and exemplarily, the ignition device is a continuous electric pulse ignition device 11; the positive and negative electrodes of the continuous electric pulse ignition device 11 are both extended into the combustion chamber precursor 17; further specifically, the positive and negative electrodes are respectively extended into the combustion chamber precursor 17 through the ceramic sleeve 5, and the positive and negative electrodes are respectively nested inside the ceramic sleeve 5, close to each other on the axis of the combustion chamber precursor 17; further preferably, the ceramic sleeve 5 is parallel to the outer wall of the combustion chamber precursor 17, and the ceramic sleeve 5 extends into the combustion chamber precursor 17 to a certain depth to form an angle, extending to the point where the positive and negative electrodes are constantly close. In the embodiment of the present invention, the continuous electric pulse ignition device 11 can effectively achieve a higher ignition rate, thereby preventing the problem of tar not being able to burn efficiently due to ignition failure.

[0039] In the embodiment of the present invention, further specifically and exemplarily, the air flow homogenization bin 7 is externally connected to a gas inlet 1 and an air-entrained combustion material inlet 6, and is internally provided with an externally rotating ventilation hole wheel 3, an internally rotating ventilation hole wheel 2 and a bracket 4; wherein the wheel diameter of the internally rotating ventilation hole wheel 2 in the air flow homogenization bin 7 is smaller than the wheel diameter of the externally rotating ventilation hole wheel 3, and the rotation speeds of the two are kept synchronized and the rotation directions are opposite to achieve mixing.

[0040] In an embodiment of the present invention, preferably, a swirl air distributor 8 is further provided on the combustion chamber precursor 17; more specifically, it is fixedly arranged on the outer wall of the combustion chamber precursor 17 in the circumferential direction, used to further mix the dopants, and form a stable recirculation zone in the combustion chamber precursor 17 to assist the ignition and combustion of the dopants in the combustion chamber precursor 17; optionally, the swirl air distributor 8 contains 10 impellers and is equipped with a flow stabilizer in the center. By means of the swirl air distributor 8, the original gas in the device is discharged, and a combustion mode with gas as the main and air as the auxiliary creates suitable conditions for partial oxidation combustion, promotes the removal of the combustion materials, and reduces the potential safety hazard of the burner explosion. In addition, during the combustion stage, the swirl air distributor 8 can stir the gas and combustion materials in the multi-fold air homogenization chamber 7, causing them to rush into the combustion chamber precursor 17 at high speed, greatly improving the temperature uniformity in the furnace.

[0041] In a specific exemplary embodiment of the present invention, the air homogenization chamber 7 is respectively connected to the gas inlet 1 and the air entrained combustion material inlet 6; the axis of the gas inlet 1 and the axis of the air entrained combustion material inlet 6 are perpendicular to each other in the plane; a bracket 4 and an outer swirl ventilation hole runner 3 are installed between the gas inlet 1 and the air homogenization chamber 7, an inner swirl ventilation hole runner 2 is fixed on the bracket 4, and the outer swirl ventilation hole runner 3 is fixed on the outer wall; the continuous electric pulse ignition device 11 sequentially passes through the bracket 4, the air homogenization chamber 7 and the swirl air distributor 8, and extends into the combustion chamber precursor 17; the air homogenization chamber 7 is connected to the combustion chamber at the back, and a swirl air distributor 8 is installed between the combustion chamber and the air homogenization chamber 7; the combustion chamber is successively composed of a combustion chamber precursor 17, a partition 10, a combustion transition conical tube 12 and a combustion chamber rear drive 14; the combustion chamber precursor 17 is equipped with an ammonia injection valve 9; the combustion chamber rear drive 14 is equipped with a water vapor injection valve 13 and a residue collection port 16, which is connected to the tail gas collection port 15. In an embodiment of the present invention, the impingement of the gas jet and the air entrained combustion material jet promotes the uniform mixing of the gas and the combustion materials, and the opposite rotation of the outer swirl ventilation hole runner 3 and the inner swirl ventilation hole runner 2 further strengthens the uniform mixing of the gas and the combustion materials, contributing to the thoroughness and efficiency of combustion.

[0042] In summary, in the partial oxidation burner provided in the above embodiments of the present invention, the burner adopts a gas mixing mode of "mainly gas and supplemented by oxygen", and the overall atmosphere of the burner is a reducing atmosphere; ammonia is introduced into the front section 17 of the combustion chamber through the ammonia injection valve 9 to further provide the reducing atmosphere required for material combustion and preliminarily remove acid at the same time; water vapor is introduced into the rear section 14 of the combustion chamber through the water vapor injection valve 13 to provide a reforming environment for the material and the combustion products of the material, remove suspended particles at the same time, and cooperate with ammonia to further remove acid; ammonia is used as the gas heat carrier for suspending the combustion material to provide energy for the material reforming in the rear section 14 of the combustion chamber; the burner can perform partial oxidation combustion treatment on solid and liquid waste; the combustion material is subjected to partial oxidation combustion treatment in a suspended state; the swirl air distributor 8 sends the suspended particulate matter generated by partial oxidation combustion into the rear section 14 of the combustion chamber, and cooperates with water vapor to remove residues with a lifting type collection tank. The exhaust gas collection port 15 effectively reduces the exhaust gas temperature with the assistance of water vapor.

[0043] Specifically exemplary in the embodiments of the present invention, the burner is an integral body and can adopt a horizontal design. From left to right, there are successively installed an air flow homogenization chamber 7, a front section 17 of the combustion chamber, a swirl air distributor 8, a continuous electric pulse ignition device 11, an ammonia injection valve 9, a combustion transition conical tube 12, a water vapor injection valve 13, and a rear section 14 of the combustion chamber; among them, brackets 4 and an outer rotary ventilation hole runner 3 can be arranged in the air flow homogenization chamber 7, and an inner rotary ventilation hole runner 2 is fixed on the bracket 4, which guarantees the uniform mixing of the air flow and the combustion material; at the same time, a gas inlet 1 and an air-entrained combustion material inlet 6 are respectively opened on the left side and the upper part of the air flow homogenization chamber 7. It should be noted that the combustion transition conical tube 12 should be at a moderate distance and not too long; the overall interior of the combustion chamber is wrapped with a membrane water wall; the cross-sectional area of the front section 17 of the combustion chamber should be larger than the cross-sectional area of the rear section 14 of the combustion chamber; the axes of the inner rotary ventilation hole runner 2 and the outer rotary ventilation hole runner 3 are kept consistent and are on the axis of the air flow homogenization chamber 7. The diameter of the inner rotary ventilation hole runner 2 should be smaller than the diameter of the outer rotary ventilation hole runner 3, and it is recommended that the diameter of the inner rotary ventilation hole runner 2 be half of the diameter of the outer rotary ventilation hole runner 3.

[0044] Specifically, the gas inlet 1 and the air-entrained combustion material inlet 6 are connected to the supply pipeline by means of a flange structure, and the connection is sealed by a rubber sealing ring or the like. There is no special limitation on the diameter at the inlet. The outer-rotating ventilation hole runner 3 and the inner-rotating ventilation hole runner 2 rotate in opposite directions. It is recommended that the rotational speeds be the same, and the recommended rotational speed range is 60 to 120 revolutions per minute; the diameters of the ventilation holes on the outer-rotating ventilation hole runner 3 and the inner-rotating ventilation hole runner 2 are the same, with a hole diameter of 1 to 3 cm, and the opening positions are evenly distributed. The air flow homogenization chamber 7 is made of low-carbon steel, can withstand high pressure, and its internal volume is larger than that of the combustion chamber precursor 17. The swirl air distributor 8 is of an axial vane type structure, contains a number of vanes, the vane structure is in the form of a 30° helical angle paraboloid, there is a partial movable space for the vanes, and a flow stabilizer is provided in the center to adjust the intensity of the air flow, and the power is generally between 1800 and 2400 w to ensure that the air flow at the outlet of the air distributor is not overly strong. The ceramic sleeve 5 is close to the side wall of the burner and is parallel to the axis of the burner. The diameter range of the ceramic sleeve 5 is 1 to 3 cm. After entering the combustion chamber precursor 17, it forms a cone angle in the range of 60° to 80° with the axis of the burner. The two ceramic sleeves 5 are in the same vertical plane, and the vertical distance range is 3 to 5 cm; the positive and negative electrodes of the continuous electric pulse ignition device 11 extend into the combustion chamber precursor 17 along the ceramic sleeve 5 respectively, and the positive and negative electrodes protrude 0.5 to 1.5 cm from the ceramic sleeve 5 to achieve continuous tip discharge.

[0045] An operation method of the above partial oxidation burner provided by an embodiment of the present invention specifically includes the following steps:

[0046] Before ignition, start the outer-rotating ventilation hole runner 3 and the inner-rotating ventilation hole runner 2 respectively, open the gas inlet 1, inject gas into the air flow homogenization chamber 7, and start the swirl air distributor 8; when an anaerobic condition is achieved in the device, close the swirl air distributor 8, open the air-entrained combustion material inlet 6, and inject air and combustion products into the air flow homogenization chamber 7 together;

[0047] Start the swirl air distributor 8, open the ammonia injection valve 9, start the continuous electric pulse ignition device 11, and achieve partial oxidation combustion of the combustion material and the first-stage deacidification;

[0048] Close the continuous electric pulse ignition device 11, open the partition 10, open the water vapor injection valve 13, and achieve the reforming of the combustion material and the product and the second-stage deacidification;

[0049] Open the tail gas collection port 15 to collect the tail gas, and take out the residue collection tank to collect the residue.

[0050] It should be noted that the time for discharging the original gas in the burner with the help of gas should not be too long to prevent waste of gas; the time for closing the swirl air distributor 8 and the gap between the inlet of air and the combustion materials should not be too long to prevent the concentration of gas in the air flow homogenization chamber 7 from being too high; the time for evenly mixing gas, air, combustion promoter ferric chloride and combustion materials with the help of the outer swirl ventilation hole runner 3 and the inner swirl ventilation hole runner 2 should be controlled within a certain range, not too long or too short, so as not to cause energy waste or uneven mixing of air flow and combustion materials. In addition, the interval between closing the partition plate 10 and opening the ammonia injection valve 9 and between closing the ammonia injection valve 9 and opening the partition plate 10 should not be too long to prevent energy loss; after opening the water vapor injection valve 13, it should be maintained for more than half an hour to ensure complete deacidification and complete sedimentation of dust; the water vapor injection rate should not be too large to prevent a sharp drop in energy. After the partial oxidation combustion starts, within 50% load, the continuous electric pulse ignition device 11 enters the sleep state, the blade position of the swirl air distributor 8 is adjusted to extend outwards, and the flow stabilizer adjusts the air flow intensity to optimize combustion; above 50% load, the continuous electric pulse ignition device 11 starts to operate, and the blades of the swirl air distributor 8 retract to optimize combustion. The load adjustment is flexible, effectively ensuring that the combustion in the combustion chamber precursor 17 is in a partial oxidation state. It can be understood that the swirl air distributor 8 can flexibly adjust the blades and the flow stabilizer, which can effectively ensure a combustion mode with gas as the main and air as the auxiliary, form partial oxidation combustion, and at the same time stir ammonia to participate in the first-stage deacidification. The specific adjustment position needs to be determined according to the actual operation and is not specifically limited here.

[0051] In summary, to solve the above-mentioned technical problems of the existing burners, such as the common problems of safety explosion protection, the generation of tar and its derivative hazards, in the technical solution provided by the embodiments of the present invention, the ratio and the primary and secondary relationship between the fuel gas and air are converted, and then ammonia is introduced to assist the partial oxidation combustion of the material and the two-stage acid removal treatment. Water vapor is introduced to reform the combustion material and its products, and cooperate with ammonia for the second-stage acid removal and dust removal; the combustion chamber is classified to refine the treatment process; the uniform mixing of the fuel gas jet and the air jet is realized by relying on the outer-rotating ventilation hole runner 3 and the inner-rotating ventilation hole runner 2; with the help of the swirl air distributor 8, multiple times of the furnace gas is agitated into the combustion chamber precursor 17, forming a high-speed air flow impact. Additionally, further, the swirl air distributor 8 is used to discharge the original gas in the device, the fuel gas is injected into the air flow homogenization chamber 7, and the combustion material is injected into the air flow homogenization chamber 7 by air entrainment. The fuel gas jet and the air jet achieve an impact collision to provide a partial oxidation environment, and the further uniform mixing of the fuel gas jet, the air jet and the combustion material is realized by relying on the outer-rotating ventilation hole runner 3 and the inner-rotating ventilation hole runner 2; the swirl air distributor 8 is started to agitate multiple times of the gas in the air flow homogenization chamber 7 into the combustion chamber precursor 17, and ammonia is injected into the combustion chamber precursor 17 through the ammonia injection valve 9 to further form a partial oxidation environment. Cooperating with the continuous electric pulse ignition device 11, the partial oxidation combustion of the combustion material is formed, and ammonia participates in the first-stage acid removal; the partition 10 is opened, ammonia enters the combustion chamber rear body 14 as a gas heat carrier, water vapor is injected through the water vapor injection valve 13 for reforming reaction, and ammonia is cooperated to participate in the second-stage acid removal, while removing dust and reducing temperature, collecting the tail gas residue, effectively removing potential safety hazards, and realizing the removal of the combustion material.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A partial oxidation burner, characterized in that, Comprising: An air flow homogenization chamber (7) for inputting air, fuel gas, and a combustion substrate and mixing them to obtain a gas-solid admixture; wherein, in the gas-solid admixture, the volume ratio of the fuel gas to oxygen is 60% - 95%; A combustion chamber, which includes a combustion chamber precursor (17), a partition plate (10), and a combustion chamber successor (14); wherein, a closable partition plate (10) is provided between the combustion chamber precursor (17) and the combustion chamber successor (14), and the partition plate (10) is used to realize the connection or separation between the combustion chamber precursor (17) and the combustion chamber successor (14); the combustion chamber precursor (17) is used to input the gas-solid admixture and ammonia, the gas-solid admixture and the ammonia form a reducing atmosphere, the gas-solid admixture undergoes partial oxidation combustion in the reducing atmosphere, and the ammonia is also used for primary deacidification during partial oxidation combustion, outputting a precursor combustion product and remaining ammonia; the combustion chamber successor (14) is used to input water vapor, the precursor combustion product and the remaining ammonia output by the combustion chamber precursor (17), the remaining ammonia and the water vapor are used to reform the precursor combustion product and perform secondary deacidification, the water vapor is also used for solid dust removal of the precursor combustion product and tail gas cooling, and the remaining ammonia is also used as a heat carrier to provide the energy required for secondary deacidification, outputting a successor combustion product; An ignition device provided inside the combustion chamber precursor (17).

2. The partial oxidation burner according to claim 1, characterized in that, The partial oxidation burner is of a horizontal structure, and the cross-sectional area of the combustion chamber precursor (17) is larger than that of the combustion chamber successor (14); A combustion transition conical tube (12) is also provided between the partition plate (10) and the combustion chamber successor (14).

3. The partial oxidation burner according to claim 1, characterized in that, An ammonia injection valve (9) is provided on the combustion chamber precursor (17), and a water vapor injection valve (13) is provided on the combustion chamber successor (14), and the periphery is wrapped with a membrane water wall.

4. The partial oxidation burner according to claim 1, characterized in that, The ignition device is a continuous electric pulse ignition device (11).

5. The partial oxidation burner according to claim 4, characterized in that, The positive and negative electrodes of the continuous electric pulse ignition device (11) are respectively nested in ceramic sleeves (5) and extend into the combustion chamber precursor (17), and are close to each other on the axis of the combustion chamber precursor (17).

6. The partial oxidation burner according to claim 1, characterized in that, The air flow homogenization chamber (7) is externally connected with a fuel gas inlet (1) and an air entrained combustion material inlet (6), and is internally provided with an outer rotary ventilation hole runner (3), an inner rotary ventilation hole runner (2), and a bracket (4); Wherein, the runner diameter of the inner rotary ventilation hole runner (2) in the air flow homogenization chamber (7) is smaller than that of the outer rotary ventilation hole runner (3).

7. The partial oxidation burner according to claim 6, characterized in that, The axes of the fuel gas inlet (1) and the air entrained combustion material inlet (6) are perpendicular to each other on a plane.

8. The partial oxidation burner according to claim 1, characterized in that, A swirl air distributor (8) is also provided on the combustion chamber precursor (17).

9. A working method of the partial oxidation burner according to claim 1, characterized in that, Including the following steps: The air flow homogenization chamber (7) inputs air, fuel gas, and a combustion substrate and mixes them to obtain a gas-solid admixture; wherein, in the gas-solid admixture, the volume ratio of the fuel gas to oxygen is 60% - 95%; The separation between the front part (17) and the rear part (14) of the combustion chamber is achieved through the partition plate (10). The front part (17) of the combustion chamber inputs the gas-solid admixture and ammonia. The gas-solid admixture and ammonia form a reducing atmosphere. Ignited by an ignition device, the gas-solid admixture undergoes partial oxidation combustion in the reducing atmosphere, and the ammonia undergoes primary deacidification during the partial oxidation combustion, outputting the front combustion products and the remaining ammonia. The front part (17) and the rear part (14) of the combustion chamber are connected through the partition plate (10). The rear part (14) of the combustion chamber inputs water vapor, the front combustion products output from the front part (17) of the combustion chamber, and the remaining ammonia. The remaining ammonia and the water vapor perform reforming and secondary deacidification on the front combustion products. The water vapor performs solid dust removal and tail gas cooling on the front combustion products. The remaining ammonia provides the energy required for secondary deacidification as a heat carrier, outputting the rear combustion products.

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