CN117303319A - Afterburning sulfur-making burner and control method - Google Patents
Afterburning sulfur-making burner and control method Download PDFInfo
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- CN117303319A CN117303319A CN202210704526.2A CN202210704526A CN117303319A CN 117303319 A CN117303319 A CN 117303319A CN 202210704526 A CN202210704526 A CN 202210704526A CN 117303319 A CN117303319 A CN 117303319A
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- gas
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- afterburned
- combustion
- air
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 223
- 238000002485 combustion reaction Methods 0.000 claims abstract description 116
- 239000002253 acid Substances 0.000 claims abstract description 83
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 63
- 239000011593 sulfur Substances 0.000 claims abstract description 63
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 239000002737 fuel gas Substances 0.000 claims abstract description 33
- 239000000567 combustion gas Substances 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 17
- 239000006229 carbon black Substances 0.000 abstract description 10
- 238000011084 recovery Methods 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 description 17
- 239000001301 oxygen Substances 0.000 description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000007921 spray Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 150000003863 ammonium salts Chemical class 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
- C01B17/0404—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process
- C01B17/0413—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process characterised by the combustion step
- C01B17/0417—Combustion reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/008—Flow control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
Abstract
The invention provides a sulfur-making after-combustion burner which comprises a shell, a main gas gun, an acid gas gun, an after-combustion gas gun and a main combustion air pipeline, wherein an air duct is arranged in the shell, a main flame path is arranged at the tail end of the air duct, an ignition gun is arranged on the main flame path, a combustion-supporting chamber is arranged in the air duct, the acid gas gun is arranged in the combustion-supporting chamber, the main gas gun is arranged in the acid gas gun, the after-combustion flame path is arranged in a lining around the main flame path, the after-combustion gas gun and the after-combustion air gun are arranged in the after-combustion flame path, and the after-combustion gas gun and the after-combustion air gun are used for providing high-temperature flue gas into the main flame path. According to the afterburning sulfur-making burner disclosed by the invention, after-burning fuel gas and after-burning air are completely combusted in the after-burning flame path before entering the main flame path, and the heat is completely released, so that on one hand, under the condition that the principle of preparing sulfur by using acid gas is unchanged, the total flue gas temperature reaches the temperature required by a sulfur-making process, and the sulfur recovery rate is improved; on the other hand, the fuel gas completely burns, thereby avoiding generating carbon black and further improving the quality of sulfur.
Description
Technical Field
The invention relates to the field of burners, in particular to a post-combustion sulfur-making burner and a control method.
Background
Acid gas (the main component being H) 2 S) the principle of the sulfur-making sulforeaction is as follows:
3H 2 S+3/2O 2 →2H 2 S+SO 2 +H2O；2H 2 S+SO 2 →3/2S 2 +2H 2 O。
from the reaction principle, only one third of H can be given in the acid gas combustion process 2 S provides oxygen, i.e. is completed under oxygen conditions, one third of H 2 S is oxidized into SO 2 Two thirds of H remaining 2 S and SO generated by earlier oxidation 2 Reacting to finally generate S 2 . Too much or too little oxygen supply will affect S 2 The rate of formation. The whole combustion reaction process of the acid gas in the furnace is completed in the under-oxygen state.
In the sulfur-producing process of acid gas, the flame temperature of the combustion of the acid gas must reach above 950 ℃ so that the acid gas can be stably combusted. The combustion temperature of the acid gas and H in the acid gas 2 S concentration is closely related, H in acid gas 2 The higher the S concentration, the higher the combustion temperature, and the combustion temperature of the acid gas is generally 950-1350 ℃ in the industry. When H in acid gas 2 When the S concentration is low, the combustion temperature of the acid gas can not reach 950 DEG COn the contrary, the acid gas cannot be continuously and stably combusted, and the whole sulfur production process cannot be continued.
In the industries related to coal chemical industry, coal electricity, synthetic ammonia and the like, the concentration of the acid gas is generally low, and the minimum concentration of the acid gas is only 20 percent. In the under-oxygen sulfur process, the combustion temperature of the acid gas is too low, the combustion reaction temperature cannot reach the stable combustion temperature, and the sulfur process cannot be continued. The common measures adopted in the industry are that the flame temperature is increased by means of preheating acid gas, preheating air, acid gas diversion, oxygen enrichment, pure oxygen combustion supporting and the like, the stable combustion of the acid gas is ensured, and the sulfur production process is completed.
The existing problems are that when the concentration of the acid gas is low, if a mode of preheating the acid gas and preheating the combustion air is adopted, heat exchange equipment is additionally added, larger occupied area is needed, one-time investment is large, and when the concentration of the acid gas is too low, the mode of preheating the acid gas and preheating the combustion air is close to the mode of preheating the acid gas and preheating the combustion air, so that the process requirements are not met; if oxygen-enriched air or pure oxygen is adopted for supporting combustion, firstly, oxygen production equipment needs to be added, and investment is increased; secondly, although oxygen enrichment or pure oxygen and acid gas combustion can effectively improve the acid gas combustion reaction temperature, the fuel gas cannot be used for pure oxygen or oxygen enrichment for supporting combustion in the temperature rising and baking process of the sulfur making furnace, otherwise, the fuel gas reacts with the pure oxygen or the oxygen enrichment, the combustion temperature is too high, equipment is easy to burn out, the design of the burner needs to consider the combustion of the fuel gas and air at the same time, the acid gas and the pure oxygen combustion is complicated in structure, the equipment is expensive, and the operation requirement on the burner is relatively high; if the acid gas split-flow mode is adopted, the furnace temperature can only be raised by a small margin. When the concentration of the acid gas is too low, or when sulfur production and ammonia burning are needed, the flame (furnace) temperature is difficult to meet the requirements even if the measures are used.
When the temperature of the furnace is not ever higher, the method of adopting the afterburning mode to improve the furnace temperature is also available in the industry, but the method has larger defects. For example, in the under-oxygen state, the supplementary fuel gas cannot be completely combusted, the heat of the fuel cannot be completely released, and the incompletely combusted fuel gas is liable to generate carbon black, thereby affecting the sulfur quality.
The patent of application number CN201621130344.5 among the prior art discloses an acid gas reaction furnace combustor, which comprises a housin, the afterburning gas spray gun, the acid gas spray gun, main gas spray gun, air swirler, thermal-insulated lining and refractory lining, be equipped with combustion air inlet on the upper portion of casing, be equipped with thermal-insulated lining and refractory lining on the inner wall of casing in proper order, be equipped with the air duct in the inside of casing, be equipped with the combustion chamber at the end of air duct, be equipped with the combustion chamber in the air duct, be equipped with the acid gas spray gun in the combustion chamber, be equipped with the afterburning gas spray gun in the acid gas spray gun, be equipped with the choke in the end in the combustion chamber, be equipped with the outside at the choke and be equipped with air swirler. Although the sulfur recovery rate is improved to a certain extent, the afterburning gas spray gun is arranged in the air duct, the air duct is in an under-oxygen state, the supplemented fuel gas cannot be completely combusted, the fuel heat cannot be completely released, the incompletely combusted fuel gas is easy to generate carbon black, and the sulfur quality is influenced.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a post-combustion sulfur-making burner and a control method thereof, which are used for solving the problems that in the prior art, a post-combustion gas spray gun is arranged in a gas guide cylinder, the gas guide cylinder is in an oxygen shortage state, the supplementary fuel gas cannot be completely combusted, the fuel heat cannot be completely released, the incompletely combusted fuel gas is easy to generate carbon black, and the sulfur quality is influenced.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the utility model provides a afterburning sulfur burner, afterburning sulfur burner includes casing, main gas gun, acid gas gun, afterburning gas gun and main combustion air pipeline the inside of casing is equipped with the air duct, sets up main flame path at the end of air duct set up the burning torch on the main flame path, is equipped with the combustion-supporting room in the air duct, sets up the acid gas gun in the combustion-supporting room, sets up main gas gun in the acid gas gun, sets up the afterburning flame path in the lining all around of main flame path, sets up afterburning gas gun and afterburning air gun on the afterburning flame path, afterburning gas gun, afterburning air gun are used for the rifle to provide high temperature flue gas in the main flame path.
According to the afterburning sulfur-making burner, the afterburning gas gun and the afterburning air gun are arranged on the afterburning flame path, after-burning gas and after-burning air are completely combusted in the afterburning flame path before entering the main flame path to form high-temperature flue gas, and the heat of the fuel is completely released, so that the total flue gas temperature reaches the temperature required by a sulfur-making process under the condition that the principle of acid gas sulfur making is unchanged, and the sulfur recovery rate is improved; on the other hand, the fuel gas completely burns, thereby avoiding generating carbon black and further improving the quality of sulfur.
Further, the afterburner flame path comprises a first afterburner flame path and a second afterburner flame path, wherein an afterburner gas gun is arranged in the first afterburner flame path, and an afterburner air gun is arranged in the second afterburner flame path.
Further, a main gas pipeline is arranged on the shell, a main gas switching valve is arranged between the main gas gun and the main gas pipeline, a total gas inlet is arranged on the main gas pipeline, and the afterburner gas gun is communicated with the main gas pipeline.
The device reduces the structural change of the burner, has low cost and simple operation, does not need to additionally increase equipment for providing the afterburning gas and occupies a larger occupied area.
Further, a main combustion air pipeline is arranged on the shell, a total air inlet is arranged on the main combustion air pipeline, and the post combustion air gun is communicated with the main combustion air pipeline.
The arrangement reduces the structural change of the burner, has low cost and simple operation, does not need to additionally increase equipment for providing after-combustion air, and does not need to occupy larger occupied area.
Further, an afterburning gas pipeline is arranged between the main gas pipeline and the afterburning gas gun, and an afterburning gas regulating valve, an afterburning gas flowmeter and an afterburning gas switching valve are arranged on the afterburning gas pipeline.
The setting is convenient for open the afterburner gas gun, still is convenient for count and adjust the flow of the afterburner gas that gets into in the afterburner gas gun.
Further, an after-combustion air pipeline is arranged between the main combustion air pipeline and the after-combustion air gun, and an after-combustion air adjusting valve, an after-combustion air flowmeter and an after-combustion air switching valve are arranged on the after-combustion air pipeline.
This arrangement facilitates opening the post-combustion air gun and also facilitates counting and regulating the flow of post-combustion air into the post-combustion air gun 5.
Further, an afterburner gas nozzle is arranged at the tail end of the afterburner gas gun, and a first flame holder is arranged on the outer periphery of the afterburner gas nozzle.
Further, an afterburning air nozzle is arranged at the tail end of the afterburning air gun, and a second flame stabilizer is arranged on the outer circumferential side of the afterburning air nozzle.
Further, an afterburning annular gas collection chamber is arranged between the afterburning gas pipeline and the afterburning gas gun, and an afterburning air annular gas collection chamber is arranged between the afterburning air pipeline and the afterburning gas gun.
In a second aspect of the present invention, there is provided a control method of an afterburning sulfur burner, any one of the control methods of an afterburning sulfur burner, comprising the steps of:
s1, starting operation;
s2, introducing fuel gas into the main fuel gas gun, and introducing combustion air into the main combustion air pipeline;
s3, judging whether the temperature in the main fire channel is higher than 950 ℃; if yes, the step S4 is entered, and if not, the step S2 is returned;
s4, introducing acid gas into the acid gas gun;
s5, judging whether the temperature in the main fire channel is higher than 950 ℃; if yes, the current situation is maintained, and if not, the step S6 is carried out;
s6, stopping introducing fuel gas into the main fuel gas gun, opening the afterburner gas gun and the afterburner air gun, and providing high-temperature flue gas into the main flame path.
Compared with the prior art, the afterburning sulfur-making burner and the control method have the following beneficial effects:
1) According to the afterburning sulfur-making burner and the control method, after-burning fuel gas and after-burning air are completely combusted in the after-burning flame path before entering the main flame path to form high-temperature flue gas, the heat of fuel is completely released, and under the condition that the principle of acid gas sulfur-making is unchanged, the total flue gas temperature reaches the temperature required by a sulfur-making process, and the sulfur recovery rate is improved.
2) According to the afterburning sulfur-making burner and the control method, the fuel gas is completely burnt, so that carbon black is prevented from being generated, and the sulfur quality is improved.
3) The afterburning sulfur-making burner and the control method thereof have the advantages of less structural change, low cost, simple operation, no need of additionally adding heat exchange equipment and no need of occupying larger occupied area.
4) According to the afterburning sulfur-making burner and the control method, afterburning fuel gas and afterburning air are completely combusted in the afterburning flame path, fuel heat is completely released, high-temperature flue gas at the temperature of about 1400-1500 ℃ is generated, the sulfur-making process conditions are met, the ammonia-burning process conditions are met, ammonium salt crystallization blockage and equipment corrosion are avoided, and the shutdown times are reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of an afterburner sulfur burner according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;
fig. 3 is a schematic left-view structure of an afterburning sulfur burner according to an embodiment of the present invention.
Reference numerals illustrate:
1. a main gas gun; 101. a total gas inlet; 102. a main gas nozzle; 103. a main gas switching valve; 104. a main gas pipeline; 2. afterburner gas guns; 201. afterburning gas nozzle; 202. afterburning gas ports; 203. the post-combustion gas regulating valve; 204. afterburning gas pipes; 205. afterburning gas flowmeter; 206. afterburning gas switching valve; 207. an inlet of the afterburning annular plenum; 208. afterburning annular plenum; 209. a first flame holder; 210. a first afterburner flame path; 3. a main combustion air duct; 301. a total air inlet; 4. acid gas gun; 401. an acid gas inlet; 402. acid gas spray heads; 403. an acid gas pipeline; 5. post-combustion air guns; 501. an afterburning air interface; 502. an afterburning air-conditioning valve; 503. an afterburning air duct; 504. afterburning air flow meter; 505. an afterburning air switching valve; 506. an inlet of the post-combustion air annular collection chamber; 507. an afterburning air annular plenum; 508. post-combustion air spray heads; 509. a second flame holder; 510. a second afterburner flame path; 6. igniting the gun; 7. a housing; 8. an air swirler; 9. a thermal insulation liner; 10. a refractory lining; 11. a main flame path; 12. an air duct; 13. a throat.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The description of "first," "second," etc. in embodiments of the present invention is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The embodiment provides an afterburning sulfur-making burner, as shown in fig. 1-3, which comprises a shell 7, a main gas gun 1, an acid gas gun 4, an afterburner gas gun 2 and a main combustion air pipeline 3, wherein an air duct 12 is arranged in the shell 7, a main flame path 11 is arranged at the tail end of the air duct 12, an ignition gun 6 is arranged on the main flame path 11, a combustion supporting chamber is arranged in the air duct 12, the acid gas gun 4 is arranged in the combustion supporting chamber, the main gas gun 1 is arranged in the acid gas gun 4, the afterburner flame paths are arranged in the lining around the main flame path 11, the afterburner gas gun 2 and the afterburner gas gun 5 are arranged on the afterburner flame paths, and the afterburner gas gun 2 and the afterburner gas gun 5 are used for providing high-temperature flue gas into the main flame path 11.
The afterburning sulfur burner of this embodiment is characterized in that an afterburning gas gun 2 and an afterburning air gun 5 are arranged on a main flame path 11, afterburning gas and afterburning air are completely combusted in the afterburning flame path before entering the main flame path 11, fuel heat is completely released, high-temperature flue gas of complete combustion and low-temperature flue gas of acid gas combustion are mixed in the main flame path 11, and the temperature of the mixed flue gas is higher than 950 ℃ or reaches to the NH of 1250℃ or higher 3 Temperature. Firstly, under the condition that the principle of preparing sulfur by acid gas is unchanged, the total air quantity provided for the acid gas is kept unchanged, and the sulfur preparing process is still in an original oxygen-deficient state, so that the total flue gas temperature in the main flue 11 reaches the temperature required by the sulfur preparing process, and the sulfur recovery rate is improved; secondly, completely combusted fuel gas is used for avoiding generating carbon black and further improving the quality of sulfur; thirdly, the structure of the burner is changed slightly, the cost is low, the operation is simple, no additional heat exchange equipment is needed, and a larger occupied area is not needed; fourth, can also meet the technological condition of burning ammonia while meeting the technological condition of making sulfur, avoid ammonium salt crystallization to block up and corrode the apparatus, reduce the number of times of stopping.
Specifically, as shown in fig. 1, the afterburner flame paths include a first afterburner flame path 210 and a second afterburner flame path 510, wherein an afterburner gas gun 2 is disposed in the first afterburner flame path 210, and an afterburner air gun 5 is disposed in the second afterburner flame path 510.
The number of the post-combustion gas guns 2 and the post-combustion air guns 5 is not particularly limited.
The number of the post-combustion gas guns 2 and the post-combustion air guns 5 can be 3 to 6 according to the amount of post-combustion required by the burner.
As shown in fig. 1, the first and second afterburners 210 and 510 are disposed in one-to-one correspondence on the circumference of the main flame path 11.
The first and second afterburner flame paths 210 and 510 are each uniformly distributed over the circumference of the main flame path 11.
Specifically, the number of the afterburners 2 is not limited. The number of the afterburners 2 may be set to three or four or five or six. In the present embodiment, the number of the afterburners 2 is set to four.
Specifically, the number of the post-combustion air guns 5 is not limited. The number of the post-combustion air guns 5 may be set to three or four or five or six. In the present embodiment, the number of the post-combustion air guns 5 is set to four.
Specifically, the positions of the afterburner 2 and the afterburner 5 on the main flame path 11 are not limited. The post-combustion gas guns 2, 5 are arranged on opposite sides of the main flame path 11 or the post-combustion gas guns 2, 5 are arranged on the same side of the main flame path 11.
In this embodiment, as shown in fig. 1, the afterburner 2 and the afterburner 5 are disposed on opposite sides of the main flame path 11. The arrangement is convenient for the full mixing combustion of the afterburning gas and the afterburning air.
Specifically, as shown in fig. 1, a total air inlet 301 and a total gas inlet 101 are provided in the casing 7, a heat insulating liner 9 and a refractory liner 10 are provided in this order in the inner wall of the casing 7, a throat 13 is provided at the end of the combustion-supporting chamber, and an air swirler 8 is provided outside the throat 13.
Specifically, as shown in fig. 1, an acid gas pipe 403 is provided in the housing 7, an acid gas inlet 401 is provided in the acid gas pipe 403, the acid gas gun 4 is communicated with the acid gas pipe 403, and an acid gas nozzle 402 is provided at the end of the acid gas gun 4.
Specifically, as shown in fig. 1, the central axis of the main gas gun 1 is disposed concentrically with the central axis of the main flame path 11.
Specifically, as shown in fig. 1, a main gas pipe 104 is provided on the housing 7, the main gas gun 1 is communicated with the main gas pipe 104, a main gas switching valve 103 is provided between the main gas gun 1 and the main gas pipe 104, a total gas inlet 101 is provided on the main gas pipe 104, and the afterburner 2 is communicated with the main gas pipe 104.
The device reduces the structural change of the burner, has low cost and simple operation, does not need to additionally increase equipment for providing the afterburning gas and occupies a larger occupied area.
More specifically, as shown in fig. 1, a main gas pipe 104 is provided at the outer end of the main gas gun 1, and a main gas nozzle 102 is provided at the end of the main gas gun 1.
Specifically, a main combustion air duct 3 is provided on the housing 7, a total air inlet 301 is provided on the main combustion air duct 3, and the post-combustion air gun 5 communicates with the main combustion air duct 3.
The arrangement reduces the structural change of the burner, has low cost and simple operation, does not need to additionally increase equipment for providing after-combustion air, and does not need to occupy larger occupied area.
More specifically, as shown in fig. 2, an afterburner gas pipe 204 is disposed between the main gas pipe 104 and the afterburner gas gun 2, one end of the afterburner gas pipe 204 is in communication with the main gas pipe 104, and the other end of the afterburner gas pipe 204 is in communication with the afterburner gas gun 2. As shown in fig. 3, an afterburner gas regulating valve 203, an afterburner gas flowmeter 205, and an afterburner gas switching valve 206 are provided in the afterburner gas conduit 204.
This arrangement facilitates the opening of the afterburner gas gun 2 and also facilitates the counting and adjustment of the flow of afterburner gas into the afterburner gas gun 2.
An afterburner gas port 202 is provided at an end of the afterburner gas conduit 204 in communication with the main gas conduit 104.
Specifically, an afterburner air duct 503 is disposed between the main combustion air duct 3 and the afterburner air gun 5, and an afterburner air port 501 is disposed at one end of the afterburner air duct 503 communicating with the main combustion air duct 3.
Specifically, as shown in fig. 3, an after-combustion air conditioning valve 502, an after-combustion air flow meter 504, and an after-combustion air switching valve 505 are provided in the after-combustion air duct 503.
This arrangement facilitates opening the post-combustion air gun 5 and also facilitates counting and regulating the flow of post-combustion air into the post-combustion air gun 5.
Specifically, as shown in fig. 2, an afterburner gas nozzle 201 is provided at the end of the afterburner gas gun 2, and the first flame stabilizer 209 is provided on the outer circumferential side of the afterburner gas nozzle 201.
Specifically, as shown in fig. 1, an after-combustion air nozzle 508 is provided at the end of the after-combustion air gun 5, and the second flame stabilizer 509 is provided on the outer circumferential side of the after-combustion air nozzle 508.
Specifically, as shown in fig. 1, an afterburned annular plenum 208 is disposed between the afterburned gas conduit 204 and the afterburned gas gun 2. An afterburned annular plenum inlet 207 is provided on the afterburned annular plenum 208.
Specifically, as shown in fig. 1, an annular post-combustion air collection chamber 507 is provided between the post-combustion air pipe 503 and the post-combustion air gun 5. An afterburner air annular plenum inlet 506 is provided on the afterburner air annular plenum 507.
The afterburned sulfur burner includes, in addition to the housing 7, the main gas gun 1, the acid gas gun 4, the main combustion air duct 3, the main flame path 11, the afterburned gas gun 2, the afterburned air gun 5 and the afterburned flame path, other related components, and in view of the fact that the specific structure and specific assembly relationship of the related components are all prior art, no further description is given here.
The afterburning sulfur-making burner is characterized in that an afterburning flame path is arranged in the lining around a main flame path 11, an afterburning gas gun 2 and an afterburning air gun 5 are arranged in the afterburning flame path, after-burning gas and after-burning air are completely combusted in the afterburning flame path before entering the main flame path 11, the heat of fuel is completely released, high-temperature flue gas at the temperature of about 1400-1500 ℃ is generated, the high-temperature flue gas generated by completely combusting the after-burning fuel and the after-burning air is mixed with low-temperature flue gas generated by combusting acid gas in the main flame path 11, the total air volume provided for the acid gas is kept unchanged under the condition that the sulfur-making principle of the acid gas is unchanged, the sulfur-making process is still in an original oxygen-lack state, the total flue gas temperature in the main flame path 11 reaches the temperature required by the sulfur-making process, and the sulfur recovery rate is improved; secondly, completely combusted fuel gas is used for avoiding generating carbon black and further improving the quality of sulfur; thirdly, the structure of the burner is changed slightly, the cost is low, the operation is simple, no additional heat exchange equipment is needed, and a larger occupied area is not needed; fourth, can also meet the technological condition of burning ammonia while meeting the technological condition of making sulfur, avoid ammonium salt crystallization to block up and corrode the apparatus, reduce the number of times of stopping.
Example 2
The present embodiment proposes a control method of an afterburning sulfur burner using the afterburning sulfur burner as described in any one of embodiment 1, comprising the steps of:
s1, starting operation;
s2, introducing fuel gas into the main fuel gas gun 1 and introducing combustion air into the main combustion air pipeline 3;
specifically, the main gas switching valve 103 is opened, and gas is introduced into the main gas gun 1 through the main gas inlet 101 on the main gas pipeline 104; combustion air is introduced into the housing 1 through the total air inlet 301 of the main combustion air duct 3.
The setting of the step S2 can be used for baking in the early start-up stage, so that the temperature of the main flame path 11 in the combustor is increased, and the combustion of the later-stage acid gas is facilitated.
S3, judging whether the temperature in the main fire channel 11 is higher than 950 ℃; if yes, the step S4 is entered, and if not, the step S2 is returned;
specifically, the temperature in the main flame path 11 is detected by a temperature sensor in the main flame path 11.
The setting of step S3 facilitates the determination of whether or not to introduce acid gas by determining whether or not the temperature in the main flame path 11 is greater than 950 ℃.
S4, introducing acid gas into the acid gas gun 4;
the arrangement of the step S4 can ensure the stable combustion of the acid gas.
S5, judging whether the temperature in the main fire channel 11 is higher than 950 ℃; if yes, the current situation is maintained, and if not, the step S6 is carried out;
the setting of step S5 facilitates the determination of whether afterburning is required by determining whether the temperature in the main flame path 11 is greater than 950 ℃.
And S6, stopping introducing the fuel gas into the main fuel gas gun 1, opening the afterburner gas gun 2 and the afterburner air gun 5, and providing high-temperature flue gas into the main flame path 11.
Specifically, in step S6, the main gas switch valve 103 is closed, the gas is stopped from being introduced into the main gas gun 1, the afterburner gas switch valve 206 and the afterburner air switch valve 505 are opened, the afterburner gas gun 2 and the afterburner air gun 5 are opened, and the ratio of the amount of the afterburner fuel to the amount of the afterburner air is controlled to ensure that the hot flue gas is sprayed into the main flame path 11 and mixed with the hot flue gas generated by the combustion of the acid gas in the main flame path 11 after the afterburner fuel amount and the afterburner air amount are completely combusted in the afterburner flame path.
The step S6 is arranged to enable the after-combustion fuel gas and the after-combustion air to be completely combusted in the after-combustion before entering the main flame path 11, the heat of the fuel is completely released, high-temperature flue gas at the temperature of about 1400-1500 ℃ is generated, the high-temperature flue gas with the after-combustion fuel and the after-combustion air being completely combusted is mixed with low-temperature flue gas with the acid gas in the main flame path 11, the total air volume provided for the acid gas is kept unchanged under the condition that the principle of the acid gas sulfur production is unchanged, the sulfur production process is still in an original under-oxygen state, the total flue gas temperature in the main flame path 11 reaches the temperature required by the sulfur production process, and the sulfur recovery rate is improved; secondly, completely combusted fuel gas is used for avoiding generating carbon black and further improving the quality of sulfur; thirdly, the structure of the burner is changed slightly, the cost is low, the operation is simple, no additional heat exchange equipment is needed, and a larger occupied area is not needed; fourth, can also meet the technological condition of burning ammonia while meeting the technological condition of making sulfur, avoid ammonium salt crystallization to block up and corrode the apparatus, reduce the number of times of stopping.
Specifically, the ratio of the post-combustion fuel amount to the post-combustion air amount is controlled to be larger than 1:10, so that after the post-combustion fuel amount and the post-combustion air amount are completely combusted in the post-combustion flame path, hot flue gas is sprayed into the main flame path 11 and is mixed with hot flue gas combusted by acid gas in the main flame path 11.
According to the control method of the afterburning sulfur-making burner, the steps S1-S6 are mutually related and are not separable, so that multiple functions are achieved. The first, the afterburning gas and the afterburning air are completely combusted in the afterburning flame path before entering the main flame path 11, the heat of the fuel is completely released, high-temperature flue gas at the temperature of about 1400-1500 ℃ is generated, the high-temperature flue gas generated by the afterburning fuel and the afterburning air is mixed with low-temperature flue gas generated by the acid gas combustion in the main flame path 11, the total air volume provided for the acid gas is kept unchanged under the condition that the sulfur making principle of the acid gas is unchanged, and the sulfur making process is still in an original under-oxygen state, so that the total flue gas temperature in the main flame path 11 reaches the temperature required by the sulfur making process, and the sulfur recovery rate is improved; secondly, completely combusted fuel gas is used for avoiding generating carbon black and further improving the quality of sulfur; thirdly, the structure of the burner is changed slightly, the cost is low, the operation is simple, no additional heat exchange equipment is needed, and a larger occupied area is not needed; fourth, can also meet the technological condition of burning ammonia while meeting the technological condition of making sulfur, avoid ammonium salt crystallization to block up and corrode the apparatus, reduce the number of times of stopping.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (10)
1. The utility model provides a afterburning sulfur burner, its characterized in that, afterburning sulfur burner includes casing (7), main gas rifle (1), acid gas rifle (4), afterburning gas rifle (2) and main combustion air pipeline (3) the inside of casing (7) is equipped with air duct (12), sets up main flame path (11) in the end of air duct (12) set up on main flame path (11) burning torch (6), be equipped with the combustion-supporting room in air duct (12), set up acid gas rifle (4) in the combustion-supporting room, set up main gas rifle (1) in acid gas rifle (4), set up afterburning flame path in the lining around main flame path (11), set up afterburning gas rifle (2) and afterburning air rifle (5) in the afterburning flame path, afterburning gas rifle (2), afterburning air rifle (5) are used for providing high temperature flue gas to in main flame path (11).
2. The afterburned sulfur burner of claim 1, wherein the afterburned flame path comprises a first afterburned flame path (210) and a second afterburned flame path (510), wherein an afterburned gas gun (2) is disposed within the first afterburned flame path (210) and an afterburned air gun (5) is disposed within the second afterburned flame path (510).
3. The afterburning sulfur burner according to claim 1, characterized in that a main gas pipe (104) is provided on the housing (7), a main gas on-off valve (103) is provided between the main gas gun (1) and the main gas pipe (104), a total gas inlet (101) is provided on the main gas pipe (104), and the afterburner gas gun (2) is in communication with the main gas pipe (104).
4. An afterburned sulfur burner as claimed in claim 2, wherein a main combustion air duct (3) is provided on the housing (7), a total air inlet (301) is provided on the main combustion air duct (3), and the afterburned air gun (5) is in communication with the main combustion air duct (3).
5. A post-combustion sulfur burner according to claim 3, characterized in that a post-combustion gas pipe (204) is provided between the main gas pipe (104) and the post-combustion gas gun (2), and that a post-combustion gas regulating valve (203), a post-combustion gas flow meter (205) and a post-combustion gas switching valve (206) are provided on the post-combustion gas pipe (204).
6. An afterburned sulfur burner as claimed in claim 4, wherein an afterburned air conduit (503) is provided between the main combustion air conduit (3) and the afterburned air gun (5), and an afterburned air regulating valve (502), an afterburned air flow meter (504) and an afterburned air on-off valve (505) are provided on the afterburned air conduit (503).
7. The afterburned sulfur burner as claimed in claim 5, wherein an afterburned gas nozzle (201) is provided at the end of the afterburned gas gun (2), and a first flame holder (209) is provided on the outer circumferential side of the afterburned gas nozzle (201).
8. The afterburned sulfur burner as claimed in claim 6, wherein an afterburned air nozzle (508) is provided at the end of the afterburned air gun (5), and a second flame holder (509) is provided at the outer circumferential side of the afterburned air nozzle (508).
9. An afterburned sulfur burner as claimed in claim 8, wherein an afterburned annular plenum (208) is provided between the afterburned gas conduit (204) and the afterburned gas gun (2), and an afterburned air annular plenum (507) is provided between the afterburned air conduit (503) and the afterburned air gun (5).
10. A control method of an afterburning sulfur burner, characterized in that the control method of an afterburning sulfur burner uses one of the afterburning sulfur burners according to any one of claims 1 to 9, comprising the steps of:
s1, starting operation;
s2, introducing fuel gas into the main fuel gas gun (1), and introducing combustion air into the main combustion air pipeline (3);
s3, judging whether the temperature in the main flame path (11) is higher than 950 ℃; if yes, the step S4 is entered, and if not, the step S2 is returned;
s4, introducing acid gas into the acid gas gun (4);
s5, judging whether the temperature in the main flame path (11) is higher than 950 ℃; if yes, the current situation is maintained, and if not, the step S6 is carried out;
s6, stopping introducing fuel gas into the main fuel gas gun (1), opening the afterburner fuel gas gun (2) and the afterburner fuel air gun (5), and providing high-temperature flue gas into the main flame path (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210704526.2A CN117303319A (en) | 2022-06-21 | 2022-06-21 | Afterburning sulfur-making burner and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210704526.2A CN117303319A (en) | 2022-06-21 | 2022-06-21 | Afterburning sulfur-making burner and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117303319A true CN117303319A (en) | 2023-12-29 |
Family
ID=89283547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210704526.2A Pending CN117303319A (en) | 2022-06-21 | 2022-06-21 | Afterburning sulfur-making burner and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117303319A (en) |
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2022
- 2022-06-21 CN CN202210704526.2A patent/CN117303319A/en active Pending
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