CN113028444A - Novel coal combustion technical method and device - Google Patents
Novel coal combustion technical method and device Download PDFInfo
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- CN113028444A CN113028444A CN202110314936.1A CN202110314936A CN113028444A CN 113028444 A CN113028444 A CN 113028444A CN 202110314936 A CN202110314936 A CN 202110314936A CN 113028444 A CN113028444 A CN 113028444A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 113
- 239000003245 coal Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007921 spray Substances 0.000 claims abstract description 59
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000008236 heating water Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 18
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 239000003034 coal gas Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 7
- 239000004071 soot Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005616 pyroelectricity Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/002—Supplying water
- F23L7/005—Evaporated water; Steam
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a new technical method and a new technical device for coal combustion, wherein the new technical method comprises the following steps: s1: introducing steam from a steam cylinder of the boiler, and introducing the introduced steam into a superheater of the boiler to enable the steam to be dry steam at the temperature of 500-800 ℃; s2: introducing dry steam into two or more than two spray rods arranged in an air supply chamber of the boiler; s3: mixing the dry steam with natural wind to make the coal fully burn; s4: the air supply quantity is adjusted according to the rising or falling of the temperature in the hearth, if the temperature of a combustion chamber of the hearth rises, the air supply quantity is adjusted to be large through a steam adjusting valve, if the temperature of the hearth drops or is the same as the temperature before air supply, the air supply quantity is immediately adjusted to be small, the coal gas is fully combusted, the coal smoke can be converted into energy for combustion through the new technology of coal combustion, and the coal gas can be used in a thermal power plant and produce economic benefits of hundreds of millions of yuan every year.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of coal combustion efficiency improvement, and the principle is to change the oxygen supply amount during coal combustion to obtain a new combustion effect, in particular to a new coal combustion technical method and a new coal combustion technical device.
[ background of the invention ]
The existing coal equipment is used for combustion by utilizing coal and natural wind, the oxygen content in the natural wind is 21%, so that in the existing coal combustion equipment, coal cannot be combusted due to soot, the carbon content of coal cinder is high, and the oxygen supply is insufficient in the combustion process of the coal, therefore, on the basis of the existing combustion equipment, the use technology of ultra-high temperature steam is added while the natural wind is supplied, high-temperature oxygen is generated, the coal can be fully combusted in the combustion process, the steam yield per ton of coal is effectively improved by 15-20%, and the soot (with bituminous coal) is completely converted into energy for combustion in the combustion process. The technology is used for the technical improvement of the fire-heat power generation boiler, improves the coal combustion efficiency, and prevents the generation of soot from the coal combustion source; greatly improving the living environment of people. The problem of insufficient oxygen supply of coal combustion equipment in high altitude areas is solved.
The technology can be used for carrying out technical transformation on various medium and large-sized coal equipment, a pyroelectricity generating boiler, an industrial boiler, a steel rolling reverberatory furnace, a northern heating boiler and a cement kiln.
Accordingly, there is a need to develop a new method and apparatus for coal combustion to address the deficiencies of the prior art and to solve or mitigate one or more of the problems set forth above.
[ summary of the invention ]
In view of the above, the present invention provides a new technical method and apparatus for coal combustion, which can improve the steam yield per ton of coal burned in a boiler or a stove by 10-20% on the original basis by introducing dry steam and mixing with coal and fully burning without changing the original coal combustion or stove structure, so as to achieve the purpose of energy saving and efficiency improvement.
In one aspect, the invention provides a novel technical method for coal combustion, which comprises the following steps:
s1: introducing steam from a steam cylinder of the boiler, and introducing the introduced steam into a superheater of the boiler to enable the steam to be dry steam at the temperature of 500-800 ℃;
s2: introducing dry steam into two or more than two spray rods arranged in an air supply chamber of the boiler;
s3: mixing the dry steam with natural wind to make the coal fully burn;
s4: and adjusting the air supply amount according to the rising or falling of the temperature in the hearth, if the temperature of a combustion chamber of the hearth rises, adjusting the air supply amount through a steam adjusting valve, if the temperature of the hearth drops or is the same as the temperature before air supply, immediately finely adjusting to reduce the air supply amount, and realizing the full combustion of the coal steam.
The above-described aspect and any possible implementation further provide an implementation in which the introducing of the steam from the split cylinders of the boiler in S1 is performed when the boiler is already in a normal combustion state.
In the above aspect and any possible implementation manner, there is further provided an implementation manner in which two or more of the spray bars described in S2 are normally open at all times, and the remaining two or more of the spray bars are controlled by the regulating valves.
The above aspect and any possible implementation manner further provide an implementation manner, in S1, the superheater is used for heating the water to an ultra-high temperature state while supplying natural air, so as to obtain oxygen and coal in the water for combustion.
The above aspects and any possible implementations further provide a coal combustion apparatus, including:
the steam transmission pipeline is connected with a steam distributing cylinder of the boiler;
the superheater is arranged in a boiler combustion chamber in a coil pipe mode, the inlet of the superheater is connected with a steam conveying pipeline, and a steam regulating valve and a steam pressure gauge are arranged on the steam conveying pipeline;
the spray rods are arranged on the boiler air supply chamber, the spray rods are provided with a plurality of small holes, the openings of the small holes face the coal layer upwards, and the spray rods are connected with the outlet of the superheater through a pipeline or a regulating valve and then a pipeline.
The above aspect and any possible implementation further provides an implementation in which a blow-down valve is installed between the superheater and the spray bar.
The above aspect and any possible implementation manner further provide an implementation manner, wherein the branch pipe connecting the outlet of the superheater and the spray bars is divided into two paths, one of the two or more spray bars is directly connected with one branch pipe, the rest of the spray bars are respectively connected with the two branch pipes in sequence through two regulating valves, and the two regulating valves are installed outside the boiler.
The above aspect and any possible implementation further provides an implementation in which the tail portions of the two or more spray bars are provided with blowdown valves located on the other side of the boiler opposite the two regulating valves.
Compared with the prior art, the invention can obtain the following technical effects:
1) compared with the existing combustion technology, the existing combustion technology only depends on natural wind combustion, and the oxygen supply amount is only 21 percent, so the coal combustion ignition temperature is low, coal tar can not be combusted to discharge black smoke, and the main reason is that the oxygen supply is insufficient in the coal combustion process; the new coal combustion technology can replace oxygen in water, increase the oxygen in water while supplying natural wind, promote the combustion flame temperature of coal to be improved, improve the combustion efficiency of coal, and obtain hydrogen in water for combustion, thereby obtaining the combustion effect which cannot be obtained by the existing natural wind. The same coal quality, the oxygen supply amount in the combustion process is changed, two different combustion efficiencies are obtained, and the method is in accordance with the natural science.
2) The new coal combustion technology can convert soot into energy for combustion, is a major breakthrough in the world coal combustion history, and can generate several billions of yuan of economic benefit every year when used in a Chinese pyro-thermal power plant.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a coal combustion apparatus of the present invention according to an embodiment of the present invention.
Wherein, in the figure:
1, a steam pipeline; 3, a shutoff valve; 4, a pressure gauge; 5, a superheater; 6 boiler combustion chamber; 7, an air release valve; 8, a roasting chamber; 9, a spray rod; 10 adjusting valve; 11, a spray rod; 12 adjusting the valve; 13, a spray rod; 14 a blowdown valve; 15 a blowdown valve; 16 blowoff valve.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The invention provides a new technical method and a new technical device for coal combustion, which are characterized in that under the condition of basically not changing the structure of the original coal combustion or a stove, dry steam and coal are introduced to be mixed and fully combusted, so that the steam yield of combustion ton coal of a boiler or stove is improved by 10-20% on the original basis, and the purposes of energy conservation and efficiency improvement are achieved. The technique comprises the following steps:
s1: introducing steam from a steam cylinder of the boiler, and introducing the introduced steam into a superheater of the boiler to enable the steam to be dry steam at the temperature of 500-800 ℃;
s2: introducing dry steam into two or more than two spray rods arranged in an air supply chamber of the boiler;
s3: mixing the dry steam with natural wind to make the coal fully burn;
s4: and adjusting the air supply amount according to the rising or falling of the temperature in the hearth, if the temperature of a combustion chamber of the hearth rises, adjusting the air supply amount through a steam adjusting valve, if the temperature of the hearth drops or is the same as the temperature before air supply, immediately finely adjusting to reduce the air supply amount, and realizing the full combustion of the coal steam. The introduction of steam from the divided cylinders of the boiler in S1 is performed when the boiler is already in a normal combustion state. In the two or more than two spray rods in the S2, one spray rod is always in a normally open state, and the other two or more than two spray rods are controlled by using the regulating valves. And the superheater in the S1 is used for heating the water to an ultrahigh temperature state while supplying air naturally, and obtaining oxygen and coal in the water for combustion.
As shown in fig. 1, a coal combustion apparatus includes: the system comprises a steam transmission pipeline 1, a shutoff valve 3, a pressure gauge 4, a superheater 5, a boiler combustion chamber 6, an emptying valve 7, a roasting chamber 8, a spray rod 9, a regulating valve 10, a spray rod 11, a regulating valve 12, a spray rod 13, a drain valve 14 and a drain valve 15; a blow-down valve 16.
The steam pipeline is connected with a steam distributing cylinder of the boiler;
the superheater is arranged in a boiler combustion chamber in a coil pipe mode, the inlet of the superheater is connected with a steam conveying pipeline, and a steam regulating valve and a steam pressure gauge are arranged on the steam conveying pipeline;
the spray rods are arranged on the boiler air supply chamber, the spray rods are provided with a plurality of small holes, the openings of the small holes face the coal layer upwards, and the spray rods are connected with the outlet of the superheater through a pipeline or a regulating valve and then a pipeline.
And a vent valve is arranged between the superheater and the spray rod. The branch pipe that connects the export of over heater and spray lance divides into two the tunnel, in two or more than two spray lances, a spray lance is direct to be connected with branch pipe all the way, and other spray lances are connected gradually with two tunnel branch pipes through two governing valves respectively, and two governing valves are installed in the outside of boiler. And the tail parts of the two or more than two spray rods are provided with a drain valve which is positioned at the other side of the boiler opposite to the two regulating valves.
The invention puts a group of superheaters in the boiler combustion chamber, and conveys saturated steam of the boiler from the branch cylinder to the superheaters by pipelines, because the working temperature in the boiler combustion chamber is generally 1130-1350 ℃, dry steam of 500-800 ℃ can be obtained from the outlets of the superheaters, the dry steam, namely the pipeline, can be seen to change the shell of the pipeline from normal color to scarlet color in the daytime after conveying the steam, and the steam temperature at the moment is above 500-800 ℃. The pipeline for drying steam is connected to spray rods arranged in each air chamber of the boiler, the pipeline for conveying the drying steam by each spray rod is provided with a regulating valve, the regulating valve is controlled according to the combustion condition of a coal bed in a combustion chamber, the using amount of the drying steam is reasonably distributed, and the coal-steam mixed combustion is realized under the action of the wind force of a blower. The invention applies 500-800 deg.C dry steam and coal combustion to make the combustion condition produce qualitative leap, according to the determination by thermocouple, the same 5.5 Kcal coal is combusted, the combustion temperature of pure coal is 1230-1250 deg.C, after adding dry steam, the combustion flame temperature is 1310-1330 deg.C, the flame volume can be doubled, the flame temperature is increased by 80 deg.C. According to the trial determination and analysis of the combustion of a plurality of industrial coals, the coal quality is below 4.5 kilocalories, the steam yield is improved by a little by steam-adding combustion, the steam yield is obviously improved by the coal quality steam-adding combustion of more than 4.7 kilocalories, the steam yield of coal with more than 5 kilocalories is improved by more than 20 percent compared with that of pure coal combustion per ton, and the steam yield of coal with 6 kilocalories added with dry steam is improved by more than 40 percent compared with that of pure coal combustion per ton. According to the data summarized in practice, the coal quality is better when the coal is combusted by adding the drying steam by adopting the technology of the invention, and the steam yield per ton of coal is higher when the adding amount of the drying steam is larger. The apparatus of the present invention will be described in further detail below with reference to the accompanying drawings. Fig. 1 is a schematic structural view of a coal combustion apparatus according to the present invention. Referring to the attached drawings, the device is characterized in that a steam transmission pipeline 1 is connected from a steam distributing cylinder of an original boiler, a steam flow meter 2, a steam adjusting valve 3 and a steam pressure gauge 4 are sequentially and serially arranged on the pipeline 1, and the pipeline 1 is formed into a superheater 5 of the device in a coil pipe mode in a combustion chamber 6 of the original boiler. From the outlet of the superheater 5, a steam pipe is connected to the middle of the boiler, and two branch pipes are branched off. One branch pipe is provided with an emptying valve 7, the other branch pipe is divided into two paths, one path is sequentially connected with a spray rod 11, a regulating valve 10 and a spray rod 9, and the other path is sequentially connected with a regulating valve 12 and a spray rod 13. Wherein, spray lance 9 is controlled by regulating valve 10, spray lance 11 is the direct spray type, spray lance 13 is controlled by regulating valve 12. The spray bars 9, 11 and 13 are arranged on an air supply chamber of the boiler roasting area 8, two ends of the spray bars extend out of a boiler shell, a plurality of small holes are formed in the spray bars, the holes face the coal layer upwards when the spray bars are arranged, the regulating valves 10 and 12 are arranged on the outer side of one side of the boiler, and the drain valves 14, 15 and 16 are arranged on the other side of the boiler and are arranged at the tail parts of the spray bars. In practice, the boiler should be in a normal combustion state. The method comprises the steps of firstly checking the emptying valve 7 and the drain valves 14, 15 and 16, confirming that the emptying valve and the drain valves are closed, enabling the regulating valves 10 and 12 to be in an open state, then slowly opening the regulating valve 3, enabling steam from a cylinder of a boiler to enter the superheater 5 to generate dry steam, enabling the dry steam to be introduced into the spray bars 9, 11 and 13 and sprayed out from a plurality of small holes in the spray bars, and enabling the dry steam and coal to be mixed and combusted. After several minutes of steam supply, if the pointer of the pressure gauge 9 keeps a stable state, the steam supply is amplified and increased, the combustion condition of the boiler combustion chamber is observed, the steam supply is adjusted according to the temperature rise or fall, if the temperature of the furnace chamber combustion chamber rises, the steam supply can be adjusted by the adjusting valve 3, if the temperature of the furnace chamber drops or is the same as the temperature before steam supply, the steam supply is immediately adjusted finely, and the coal steam is fully combusted by adjusting the steam supply. The working principle of the whole device is explained as follows: boiler steam is conveyed into a superheater 5 through a steam conveying pipeline 1, the flow of the boiler steam is stabilized under the control of a shutoff valve 3, the flow of the boiler steam is displayed in a pressure gauge 4, and the boiler steam is heated to the temperature of 500-800 ℃ in the area of the heater 5, so that the original boiler steam is converted into high-temperature dry steam which is approximately decomposed. And is sprayed out from a small hole of the spray rod. Enters the roasting chamber 8 and enters the reaction combustion process. The supply quantity of the boiler steam is the key for the mixed combustion of water and coal in the boiler, the purpose of using the shutoff valve 3 is to accurately control the flow quantity of the boiler steam by using a mechanical structure, and the pressure gauge 4 is used for specifically displaying the pressure of the steam, namely the flow quantity of the boiler steam conveyed into the heater 5. As long as the steam stop valve 3 is opened and the steam flow is adjusted, the supply flow value can be determined according to the heating effect of the steam in the boiler according to the range of the roasting area and the roasting temperature in the boiler, the steam in the boiler is ensured to be in the pressure range of the heater 5, the steam in the boiler is heated to the proper temperature and enters the roasting chamber of the boiler from the nozzle, and the steam with the temperature of 500-800 ℃ is subjected to continuous heating reaction in the fire area, so that the condition required by the combustion of coal and steam in the reaction can be achieved. The energy-saving technology and the device are suitable for the technical transformation of the existing coal combustion, are particularly suitable for the existing chain boiler and the existing fire-heat power generation boiler, and can achieve the benefits of energy saving and efficiency improvement.
The applicant carries out principle research on the basis of patent documents applied and authorized in 2008, and the result shows that compared with the existing combustion technology, the new coal combustion technology of the technical method disclosed by the invention only depends on natural wind combustion, the oxygen supply amount is only 21%, so that the coal combustion ignition temperature is low, coal tar cannot be combusted and black smoke is discharged, the main reason is that oxygen supply is insufficient in the coal combustion process, the new coal combustion technology can replace oxygen in water to be used for coal combustion, oxygen in water is added while natural wind is supplied, the ignition temperature of coal is increased, the coal combustion efficiency is improved, hydrogen in water is obtained for combustion, and therefore the combustion effect which cannot be obtained by the existing natural wind is obtained. The same coal quality, the oxygen supply amount in the combustion process is changed, two different combustion efficiencies are obtained, and the method is in accordance with the natural science. The whole equipment of the existing boiler is technically improved under the condition of complete invariance, water is heated to an ultra-high temperature state to obtain oxygen and coal in the water for combustion while natural air supply is carried out, and hydrogen in the water is obtained for combustion, so that compared with the existing combustion technology, the oxygen supply is improved, firstly, soot with bituminous coal can be converted into energy for combustion, the same coal quality is achieved, the combustion flame temperature of the coal can be improved compared with the existing combustion technology, the combustion efficiency of the coal can be improved by 10-20%, the coal can be saved by 10-20%, the carbon dioxide emission can be effectively reduced, the pollution source caused by coal burning in China is solved, and the generation of the soot is prevented from the source by using a new combustion technology. The new coal combustion technology has the use value that: china is a large coal using country, 50 hundred million tons of coal are consumed each year, and about 70 percent of the coal is used for the fire-heat power generation. If all kinds of combustion equipment in the country use the new technology of coal combustion, 3 hundred million 5 million tons of coal can be saved for the country every year, one ton of steam can be produced for one ton of coal, 200 yuan and 120 yuan can be produced, 35 million X320-11200 million yuan and 3.5X 600-2100 million yuan can be produced, and the processing cost of the soot is not included.
The above detailed description is made on a new technical method and device for coal combustion provided by the embodiment of the present application. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (8)
1. A new technical method for coal combustion is characterized by comprising the following steps:
s1: introducing steam from a steam cylinder of the boiler, and introducing the introduced steam into a superheater of the boiler to enable the steam to be dry steam at the temperature of 500-800 ℃;
s2: introducing dry steam into two or more than two spray rods arranged in an air supply chamber of the boiler;
s3: mixing the dry steam with natural wind to make the coal fully burn;
s4: and adjusting the air supply amount according to the rising or falling of the temperature in the hearth, if the temperature of a combustion chamber of the hearth rises, adjusting the air supply amount through a steam adjusting valve, if the temperature of the hearth drops or is the same as the temperature before air supply, immediately finely adjusting to reduce the air supply amount, and realizing the full combustion of the coal steam.
2. The technical method as claimed in claim 1, wherein the introducing of the steam from the divided cylinders of the boiler at S1 is performed when the boiler is already in a normal combustion state.
3. The method of claim 1, wherein the two or more spray bars in S2 are controlled by regulating valves, wherein one spray bar is always in a normally open state.
4. The technical method as claimed in claim 1, wherein the superheater in S1 is used for heating water to an ultra-high temperature state while supplying natural wind, and obtaining oxygen and coal in the water for combustion.
5. A coal combustion apparatus characterized by comprising:
the steam transmission pipeline is connected with a steam distributing cylinder of the boiler;
the superheater is arranged in a boiler combustion chamber in a coil pipe mode, the inlet of the superheater is connected with a steam conveying pipeline, and a steam regulating valve and a steam pressure gauge are arranged on the steam conveying pipeline;
the spray rods are arranged on the boiler air supply chamber, the spray rods are provided with a plurality of small holes, the openings of the small holes face the coal layer upwards, and the spray rods are connected with the outlet of the superheater through a pipeline or a regulating valve and then a pipeline.
6. The apparatus of claim 5 wherein a blow down valve is mounted between the superheater and spray bar.
7. The apparatus as claimed in claim 5, wherein the branch pipe connecting the outlet of the superheater and the spray bars is divided into two branches, one of the two or more spray bars is directly connected to one branch pipe, and the other spray bars are connected to the two branch pipes in sequence through two regulating valves, respectively, which are installed at the outside of the boiler.
8. The apparatus as claimed in claim 5, wherein the two or more spray bars are provided at their rear portions with a blow-down valve located at the other side of the boiler opposite to the two regulating valves.
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| CN202110314936.1A CN113028444A (en) | 2021-03-24 | 2021-03-24 | Novel coal combustion technical method and device |
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| CN105299685A (en) * | 2015-11-09 | 2016-02-03 | 广西桂晟新能源科技有限公司 | Method of applying water vapor to coal combustion boiler |
| CN106090892A (en) * | 2016-06-29 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of intelligent circulation combustion method of coal-burning boiler |
| CN111780151A (en) * | 2020-08-11 | 2020-10-16 | 王苗苗 | Novel combustion system of coal-fired boiler |
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2021
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