CN111928271B - Combustor of organic waste liquid incinerator and combustion method thereof - Google Patents
Combustor of organic waste liquid incinerator and combustion method thereof Download PDFInfo
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- CN111928271B CN111928271B CN202010803209.7A CN202010803209A CN111928271B CN 111928271 B CN111928271 B CN 111928271B CN 202010803209 A CN202010803209 A CN 202010803209A CN 111928271 B CN111928271 B CN 111928271B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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- 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
- F23D14/24—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 at least one of the fluids being submitted to a swirling motion
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- 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
-
- 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
- F23D14/70—Baffles or like flow-disturbing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a burner of an organic waste liquid incinerator and a burning method thereof, relates to the technical field of organic waste liquid incineration treatment, and solves the technical problem that atomized organic waste liquid cannot be sufficiently burnt in the prior art. The combustor comprises a fuel pipeline, an air pipeline sleeved outside the fuel pipeline and an organic waste liquid pipeline sleeved outside the air pipeline, wherein a first cyclone blade is arranged in the air pipeline, a second cyclone blade is arranged in the organic waste liquid pipeline, and the rotating direction of the first cyclone blade is opposite to that of the second cyclone blade. The invention forms a stable combustion area in the hearth by mixing and burning the fuel and the air in the hearth, the rotational flow air is heated and expanded by the heating of the combustion area, so that the atomized organic waste liquid can be attached to the air rotating surface which is heated and expanded, and the rotational directions of the rotational flow air and the rotational flow organic waste liquid are opposite, so that the air and the organic waste liquid can be fully mixed, and the full combustion of the organic waste liquid is realized.
Description
Technical Field
The invention relates to the technical field of organic waste liquid incineration treatment, in particular to a combustor of an organic waste liquid incinerator and a combustion method thereof.
Background
Tens of thousands of tons of high-concentration industrial waste liquid which is difficult to degrade is discharged in the industries of medicine, textile, petroleum, paper making and the like every year in China. These industrial waste liquids are mostly organic substances with high concentrations. In recent years, with the increasing appeal of energy conservation and environmental protection in society, how to treat industrial waste liquid efficiently and cleanly has become a research hotspot.
In the prior art, sewage treatment enterprises generally adopt an incineration method to treat organic waste liquid, and atomize the organic waste liquid and then input the atomized organic waste liquid into a hearth of an incinerator for incineration treatment. However, since the ignition temperature of the organic waste liquid is relatively high, even after the organic waste liquid is atomized, it is difficult for the conventional incineration treatment technology to sufficiently combust the organic waste liquid, so that harmful fumes such as carbon monoxide or dioxin are generated, and serious environmental pollution is caused.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the disadvantages of the prior art, and in a first aspect, the present invention provides a burner for an organic waste liquid incinerator to solve the technical problem that the atomized organic waste liquid cannot be sufficiently combusted in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a burner of an organic waste liquid incinerator, comprising:
the fuel pipeline is used for inputting fuel into the hearth;
the air pipeline is sleeved outside the fuel pipeline, and a first swirl blade is arranged in the air pipeline and used for inputting swirl air into the hearth; and the number of the first and second groups,
the organic waste liquid pipeline is sleeved outside the air pipeline, and a second rotational flow blade is arranged in the organic waste liquid pipeline and used for inputting atomized rotational flow organic waste liquid into the hearth;
wherein a rotational direction of the first swirl vane is opposite to a rotational direction of the second swirl vane.
On the basis of the technical scheme, the combustor of the organic waste liquid incinerator can be improved as follows.
Optionally, the air duct stretches into one end of the hearth is in a flared shape expanded outwards, and the organic waste liquid duct is connected with the hearth.
Optionally, the organic waste liquid pipeline stretches into one end of the hearth is in an outwards expanded horn mouth shape, and the air pipeline is the same as the opening angle of the organic waste liquid pipeline.
Optionally, the organic waste liquid pipeline comprises a straight section and a variable cross-section, the cross section of the straight section is larger than that of the variable cross-section, and the variable cross-section extends into the hearth.
Optionally, the second swirl vane is arranged in the variable cross-section.
Optionally, one end of the organic waste liquid pipeline, which extends into the hearth, is in a conical mouth shape which contracts inwards, and the opening direction of the air pipeline is intersected with that of the organic waste liquid pipeline.
Optionally, a plurality of air direct current pipelines are arranged on the hearth, and the plurality of air direct current pipelines are distributed on the periphery of the organic waste liquid pipeline.
Optionally, the air straight-flow ducts surround the furnace to form a circle with the fuel duct as the center, the distance between the air straight-flow ducts and the fuel duct is 1-1.5 times of the radius of the organic waste liquid duct, and the radius of each air straight-flow duct is 1/8-1/6 of the radius of the furnace.
In a second aspect, the present invention further provides a combustion method of a burner of an organic waste liquid incinerator, wherein the burner of the organic waste liquid incinerator is adopted, and the method comprises the following steps:
s1, inputting swirling air into the hearth through the air pipeline;
s2, inputting fuel into the hearth through the fuel pipeline to form a stable combustion area in the hearth;
and S3, inputting the atomized rotational flow organic waste liquid into the hearth through the organic waste liquid pipeline, and burning the atomized rotational flow organic waste liquid in the combustion zone.
On the basis of the technical scheme, the combustion method of the combustor of the organic waste liquid incinerator can be improved as follows.
Optionally, the furnace is provided with a plurality of air direct flow pipelines, the amount of swirling air input into the air pipelines is 70-90% of the total air amount, the amount of direct flow air input into the air direct flow pipelines is 10-30% of the total air amount, and the calorific value of the atomized swirling organic waste liquid input into the organic waste liquid pipeline is greater than 10500 kJ/kg.
Compared with the prior art, the combustor of the organic waste liquid incinerator has the beneficial effects that:
according to the invention, fuel and air are mixed and combusted in the hearth, so that a stable combustion area is formed in the hearth, swirling air is input into the hearth through the first swirling blades, the atomized organic waste liquid is input into the hearth through the second swirling blades, the swirling air is heated and expanded to diffuse outwards through the combustion area, so that the atomized organic waste liquid can be attached to an air rotating surface heated and expanded, and the swirling air and the swirling organic waste liquid can be fully mixed due to the fact that the swirling air and the swirling organic waste liquid are opposite in rotating direction, so that the organic waste liquid is fully combusted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic sectional view showing a burner of an organic waste liquid incinerator according to the present invention;
FIG. 2 is a schematic left side view showing the structure of a burner of an organic waste liquid incinerator according to the present invention;
FIG. 3 is a schematic view showing a flow field structure of a burner of the organic waste liquid incinerator according to the present invention;
FIG. 4 is a schematic sectional view showing the structure of a burner of an organic waste liquid incinerator according to another embodiment of the present invention;
FIG. 5 is a flow chart showing a combustion method of a burner of an organic waste liquid incinerator according to the present invention.
In the figure:
1-a fuel pipeline; 2-an air duct; 21-first swirl vanes; 3-organic waste liquid pipeline; 31-second swirl vanes; 32-straight section; 33-variable section; 4-air direct current pipeline; and 5, a hearth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the present invention provides a burner of an organic waste liquid incinerator, as shown in fig. 1 to 3, comprising a fuel pipeline 1, an air pipeline 2 and an organic waste liquid pipeline 3. The air pipe 2 is sleeved outside the fuel pipe 1, and the input port of the air pipe 2 is positioned on the side wall of the air pipe 2. The organic waste liquid pipeline 3 is sleeved outside the air pipeline 2, and the input port of the organic waste liquid pipeline 3 is positioned on the side wall of the organic waste liquid pipeline 3. The fuel pipeline 1, the air pipeline 2 and the organic waste liquid pipeline 3 may share the same pipe wall, or different pipe walls may be provided. The output port of the organic waste liquid pipeline 3 is connected to the side wall of the hearth 5, so that the output ports of the fuel pipeline 1, the air pipeline 2 and the organic waste liquid pipeline 3 extend into the hearth 5.
As shown in fig. 1 to 3, a first swirl blade 21 is provided in the air duct 2, and the swirl number of the first swirl blade 21 is 0.8 to 0.9. A second swirl vane 31 is arranged in the organic waste liquid pipeline 3, and the swirl number of the second swirl vane 31 is 0.7-0.8. The rotational direction of the first swirl vanes 21 is opposite to the rotational direction of the second swirl vanes 31. The first swirl vane 21 and the second swirl vane 31 can be respectively connected in the air pipeline 2 and the organic waste liquid pipeline 3 through flanges.
As shown in fig. 3, when air is supplied into the air duct 2, the air is swirled by the first swirl vanes 21. When the atomized organic waste liquid is fed into the organic waste liquid pipe 3, the atomized organic waste liquid generates a rotational flow under the action of the second rotational flow blade 31. Combustible gas fuel such as natural gas or water gas is input into the hearth 5 through the fuel pipeline 1, and the fuel and air are mixed to form a stable combustion area in the center of the hearth 5. The swirling air is heated in the combustion zone, expands when heated and diffuses outwards, so that the atomized organic waste liquid can be attached to the rotating surface of the air. Meanwhile, because the rotating directions of the first swirl blade 21 and the second swirl blade 31 are opposite, swirl air and the atomized swirl organic waste liquid can collide with each other and permeate into each other, so that the air and the organic waste liquid can be fully mixed, and the organic waste liquid can be fully combusted.
According to the invention, air and the organic waste liquid are mixed, and after combustible materials and the air are fully mixed according to three burning factors, the organic waste liquid can be fully burnt when the temperature of the organic waste liquid is reached, so that the problem that harmful flue gas such as carbon monoxide or dioxin is generated due to insufficient burning of the organic waste liquid is avoided, and the environment is protected.
As shown in fig. 1 to 3, in order to mix the air and the atomized organic waste liquid more sufficiently, one end of the air duct 2 extending into the furnace 5 is formed in a flared shape which expands outward. Meanwhile, one end of the organic waste liquid pipeline 3 extending into the hearth 5 is also set to be in an outwards expanded horn mouth shape. The opening angle of the air pipeline 2 is the same as that of the organic waste liquid pipeline 3, and the organic waste liquid pipeline 3 is connected with the hearth 5. The design can prolong the mixing length and the mixing area of the air and the atomized organic waste liquid, and keep the atomization angle of the organic waste liquid unchanged.
As shown in fig. 1 to 3, the organic waste liquid pipe 3 includes a straight section 32 and a variable cross-sectional section 33. The section of the straight section 32 is larger than that of the variable section 33, the variable section 33 extends into the hearth 5, and the second swirl vanes 31 are arranged on the variable section 33. When the organic waste liquid enters the variable cross-section 33 from the straight section 32, the cross section of the variable cross-section 33 becomes smaller, which is beneficial to promoting further atomization of the organic waste liquid. Of course, also can set up a plurality of apertures on straight section 32, when organic waste liquid passes through a plurality of apertures, make organic waste liquid can further atomizing, rethread second whirl blade 31 becomes the organic waste liquid of whirl.
As another embodiment, as shown in fig. 4, the present invention may further set one end of the organic waste liquid duct 3 extending into the furnace 5 to be in a shape of an inwardly-contracted conical opening, so that the opening directions of the air duct 2 and the organic waste liquid duct 3 intersect. When the air is output from the air pipeline 2 and the atomized organic waste liquid is output from the organic waste liquid pipeline 3, the air and the organic waste liquid are crossed with each other, and can be more fully collided and infiltrated, so that the air and the organic waste liquid can be fully mixed.
As shown in fig. 1 to 3, a plurality of air direct current pipelines 4 are disposed on the side wall of the furnace 5, the plurality of air direct current pipelines 4 enclose the furnace 5 to form a circle, and the circle center of the circle is the fuel pipeline 1. The distance between the air straight-flow pipes 4 and the fuel pipe 1 is 1-1.5 times of the radius of the organic waste liquid pipe 3, and the radius of each air straight-flow pipe 4 is 1/8-1/6 of the radius of the hearth 5.
As shown in FIG. 3, the present invention introduces the DC air into the furnace 5 through the air DC duct 4, and the DC air can form an air curtain in the furnace 5. On one hand, the air curtain can make up for the problem of insufficient mixing of the atomized organic waste liquid and the swirling air in a trace manner; on the other hand, the air curtain can also supplement oxygen in the hearth 5, so that the organic waste liquid can be more fully combusted in the hearth 5. In addition, the combustion of the once-through air with the fuel can also supplement the heat of combustion in the furnace 5. Of course, the air duct 4 can also be designed as a flat hole structure, so that the width of the direct air fed into the furnace 5 is larger, and the coverage area of the air curtain is larger. The invention can also input pure oxygen into the hearth 5 through the air pipeline 2 or the air direct current pipeline 4, so that the organic waste liquid is subjected to oxygen-enriched combustion in the hearth 5, and the full combustion of the organic waste liquid is ensured.
It can be understood that the number of the air straight-flow ducts 4 is not specifically limited in the present invention, and a larger number of air straight-flow ducts 4 can be provided according to the space size of the inner cavity of the furnace 5, the diameter of the organic waste liquid duct 3, the amount of the swirling air, the amount of the atomized swirling organic waste liquid, and the input amount of the fuel. Of course, when the dc air is supplied through the air dc duct 4, the continuous supply mode or the intermittent supply mode may be used.
Example 2:
the present invention also provides a combustion method of the burner of the organic waste liquid incinerator, as shown in fig. 5, the burner of the organic waste liquid incinerator is adopted. Swirling air is first introduced into the furnace 5 through the air duct 2, and then fuel is introduced into the furnace 5 through the fuel duct 1. After the swirling air and the fuel are mixed in the hearth 5, the swirling air and the fuel are combusted in the hearth 5 to form a stable combustion area. At this moment, the atomized rotational flow organic waste liquid is input into the hearth 5 through the organic waste liquid pipeline 3, the atomized rotational flow organic waste liquid is attached to the rotating surface of rotational flow air, the rotational flow air is heated and expanded, and collides and permeates with the atomized rotational flow organic waste liquid, so that the air and the organic waste liquid are fully mixed, and the organic waste liquid is fully combusted.
In particular, the invention also provides for the introduction of direct air into the furnace 5 through the air direct duct 4. Wherein, the amount of the swirling air input into the hearth 5 through the air duct 2 is 70-90% of the total air amount, and the amount of the direct-flow air input into the hearth 5 through the plurality of air direct-flow ducts 4 is 10-30% of the total air amount. The heat value of the atomized rotational flow organic waste liquid which is input into the hearth 5 through the organic waste liquid pipeline 3 is more than 10500kJ/kg, so that the organic waste liquid is fully combusted.
According to the invention, through the structural form of double rotational flows of air and organic waste liquid, the air and the organic waste liquid are fully mixed, and through the supplement of the mixture of the air and the organic waste liquid, the supplement of combustion heat and the supplement of oxygen by the direct-current air, the full combustion of the organic waste liquid is ensured. Of course, in order to improve the combustion efficiency of the hearth 5, a plurality of groups of burners of the organic waste liquid incinerator can be arranged on the side wall of the hearth 5, and the burners of the organic waste liquid incinerator are arranged at intervals and in a staggered mode along the height direction of the hearth 5, so that the sufficient combustion of the organic waste liquid can be further ensured.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (9)
1. A burner of an organic waste liquid incinerator, comprising:
the fuel pipeline (1) is used for inputting fuel into the hearth (5);
the air pipeline (2) is sleeved outside the fuel pipeline (1), and a first swirl blade (21) is arranged in the air pipeline (2) and used for inputting swirl air into the hearth (5); and the number of the first and second groups,
the organic waste liquid pipeline (3) is sleeved outside the air pipeline (2), and a second rotational flow blade (31) is arranged in the organic waste liquid pipeline (3) and used for inputting atomized rotational flow organic waste liquid into the hearth (5);
the rotating direction of the first cyclone blade (21) is opposite to that of the second cyclone blade (31), the cyclone number of the first cyclone blade (21) is 0.8-0.9, and the cyclone number of the second cyclone blade (31) is 0.7-0.8;
a plurality of air direct current pipelines (4) are arranged on the hearth (5), and the air direct current pipelines (4) are distributed on the periphery of the organic waste liquid pipeline (3).
2. The burner of an organic waste liquid incinerator according to claim 1, wherein said air duct (2) is formed in a flared bell shape at one end protruding into said furnace chamber (5), and said organic waste liquid duct (3) is connected to said furnace chamber (5).
3. The burner of an organic waste liquid incinerator according to claim 2, wherein said organic waste liquid duct (3) is formed in a flared bell shape at an end thereof extending into said furnace chamber (5), and said air duct (2) is formed at the same opening angle as said organic waste liquid duct (3).
4. A burner of an organic waste liquid incinerator according to claim 3 characterized in that said organic waste liquid piping (3) comprises a flat section (32) and a variable section (33), said flat section (32) having a larger section than said variable section (33), said variable section (33) extending into said furnace hearth (5).
5. The burner of an organic waste liquid incinerator according to claim 4, wherein said second swirl vanes (31) are provided to said variable section (33).
6. The burner of an organic waste liquid incinerator according to claim 2, wherein said organic waste liquid duct (3) has an inwardly tapered conical mouth at an end thereof extending into said furnace chamber (5), and said air duct (2) intersects with an opening direction of said organic waste liquid duct (3).
7. The burner of an organic waste liquid incinerator according to claim 6, characterized in that a plurality of said air once-through ducts (4) are enclosed on said furnace hearth (5) in a circular shape centered on said fuel duct (1), the distance between said air once-through ducts (4) and said fuel duct (1) is 1-1.5 times the radius of said organic waste liquid duct (3), and the radius of each of said air once-through ducts (4) is 1/8-1/6 of the radius of said furnace hearth (5).
8. A combustion method of a burner of an organic waste liquid incinerator, wherein the burner of the organic waste liquid incinerator of any one of claims 1 to 7 is used, comprising the steps of:
s1, inputting swirling air into the hearth (5) through the air pipeline (2);
s2, inputting fuel into the hearth (5) through the fuel pipeline (1) to form a stable combustion area in the hearth (5);
and S3, inputting the atomized rotational flow organic waste liquid into the hearth (5) through the organic waste liquid pipeline (3), and burning the atomized rotational flow organic waste liquid in the combustion zone.
9. The combustion method of a burner of an organic waste liquid incinerator according to claim 8, wherein said furnace (5) is provided with a plurality of air straight ducts (4), the amount of swirling air fed into said air ducts (2) is 70-90% of the total air amount, the amount of swirling air fed into said plurality of air straight ducts (4) is 10-30% of the total air amount, and the calorific value of the swirling organic waste liquid after atomization fed into said organic waste liquid duct (3) is more than 10500 kJ/kg.
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| CN113800490A (en) * | 2021-10-20 | 2021-12-17 | 镇江江南化工有限公司 | Method for preparing crude sodium pyrophosphate by combustion conversion of phosphorus-containing waste liquid |
| CN115682000B (en) * | 2022-11-08 | 2024-08-30 | 江苏中圣园科技股份有限公司 | Organic waste liquid incinerator containing salt |
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| Publication number | Publication date |
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| CN111928271A (en) | 2020-11-13 |
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