CN215627568U

CN215627568U - Full oxygen lance for glass kiln

Info

Publication number: CN215627568U
Application number: CN202122293945.5U
Authority: CN
Inventors: 李军明; 肖云辉; 冯建业; 黄俏; 赵恩录; 陈福; 续芯如
Original assignee: Qinhuangdao Glass Industry Research And Design Institute Co ltd
Current assignee: Qinhuangdao Glass Industry Research And Design Institute Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-25
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a full oxygen lance for a glass kiln, which comprises spray guns, wherein the spray guns are respectively arranged on the left side and the right side of a glass kiln main body, one ends of the spray guns, which are close to the glass kiln main body, are respectively provided with an outer pipe, the inner parts of the outer pipes are respectively provided with a penetrating inner pipe, one side of the inner pipe, which is close to the glass kiln main body, is respectively provided with a first outlet end, one end of the outer pipe, which is far away from the glass kiln main body, is respectively provided with a first inlet end, and the inner parts of the first inlet ends are respectively provided with a second inlet end. In the utility model, because the spray gun has simple structure and convenient use, the total oxygen gun is only required to be placed below the combustion gun of the existing glass melting furnace, the equipment investment is less, the improvement can be carried out in a hot state, the non-stop installation can be realized, the effect of reducing NOX emission is obvious, and the glass furnace combustion method based on the total oxygen gun has simple and stable production process, is easy to popularize and apply, and is worth popularizing.

Description

Full oxygen lance for glass kiln

Technical Field

The utility model relates to the technical field of glass manufacturing, in particular to a full oxygen lance for a glass kiln.

Background

The glass industry is a traditional energy consumption type industry, a large amount of harmful substances such as SO2, NOX and dust can be generated in the combustion process, acid rain is easily formed when the harmful substances are discharged into the atmosphere, and environmental pollution is caused, the NOx generation amount is 1800-3300 mg/Nm3, the SO2 is 2000-6000 mg/Nm3 in a common float glass kiln using air as a combustion-supporting medium, and the flue gas treatment cost is high; meanwhile, because the production mode of the domestic production line is rough, the energy consumption is relatively higher than that of the production line with the same capacity abroad, the latest atmospheric emission standard, namely glass industry atmospheric pollutant emission standard (GB26453-2020), requires that the emission concentration of SO2 is 280mg/Nm3 and the emission concentration of NOx is 550mg/Nm3, the inner area of the glass kiln is generally transversely divided into six areas including I, II, III, IV, V and VI, wherein the area I and the area VI are too close to the breast wall of the glass kiln, the two areas can be subjected to heat transfer as long as flame exists, SO the two areas are not generally taken as combustion areas, the areas II, III, IV and V are generally taken as combustion areas, the existing glass kiln generally adopts a reversing combustion mode, the reversing time is generally 20-30 minutes, and the left combustion gun sprays fuel, the areas related to the combustion flame are areas II, III and IV, when the reversing time is up, the right combustion gun sprays fuel, and the areas related to the fuel combustion flame are areas III, IV and V; similarly, when the reversing time is up, the left combustion gun starts to work again and reciprocates.

In the process of using the total oxygen lance for the glass kiln, the existing total oxygen lance for the glass kiln on the market often has two defects in use, firstly, the flames generated by spraying fuel by combustion guns at two sides are overlapped in different areas when the total oxygen lance is used, so that the air at the area and the arch top of the glass kiln is continuously heated, the temperature is sharply increased, the probability that nitrogen and oxygen in the air of the space of the area react at high temperature to generate Nitrogen Oxide (NOX) is greatly increased, and finally, the emission concentration and the emission total amount of the nitrogen oxide in the smoke of the glass kiln are remarkably increased, and secondly, the existing total oxygen lance for the glass kiln is inconvenient to install and transform due to the complex structure when the total oxygen lance is used.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an all-oxygen lance for a glass kiln.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a full oxygen rifle for glass kiln, includes the spray gun, the spray gun is equallyd divide and is do not set up in the glass kiln main part left and right sides, the one end that the spray gun is close to glass kiln main part all is provided with the outer tube, the inside inner tube that all is provided with and runs through of outer tube, one side that the inner tube is close to glass kiln main part all is provided with first exit end, the one end that glass kiln main part was kept away from to the outer tube all is provided with first entry end, the inside second entry end that all is provided with of first entry end, the second entry end all sets up inside first oxygen import, first oxygen import downside all is provided with the second oxygen import.

As a further description of the above technical solution:

and valve banks are arranged on one sides of the second oxygen inlets, which are far away from the glass kiln body.

As a further description of the above technical solution:

and positioning pins which are uniformly distributed are arranged on one side of the inner pipe close to the glass kiln main body.

As a further description of the above technical solution:

the bottom in the glass kiln main body is provided with uniformly distributed glass liquid.

As a further description of the above technical solution:

and combustion guns are arranged above the spray guns.

As a further description of the above technical solution:

and a second outlet end is arranged in each first outlet end.

The utility model has the following beneficial effects:

1. in the utility model, firstly, the oxygen supply mode of the total oxygen lance is controlled, so that the ejection speed of oxygen is changed, the flame tip alternately reaches a specific combustion area, namely the inner pipe and the outer pipe of the total oxygen lance have different flow cross sections, aiming at the condition that the oxygen supply amount and the pressure of the same oxygen source are fixed, the oxygen proportion of the inner pipe and the outer pipe is changed by changing the regulating valve group to be ejected to the specific combustion area in the glass kiln, so as to achieve the purpose of accurately controlling the alternately heated combustion area, which is beneficial to the glass melting and the temperature stability of the glass melting kiln, the flame tip alternately reaches the specific combustion area by changing the ejection speed of oxygen, and the continuous heating of the middle combustion area is avoided, thereby realizing the obvious reduction of the NOx emission concentration and the total emission amount in the flue gas of the glass kiln, the NOx emission concentration can be reduced by 20-30%, and the total energy consumption can be reduced by 1.5-3.5%, not only saves energy consumption, but also reduces the pollution to the environment.

2. In the utility model, because the spray gun has simple structure and convenient use, the total oxygen gun is only required to be placed below the combustion gun of the existing glass melting furnace, the equipment investment is less, the improvement can be carried out in a hot state, the non-stop installation can be realized, the effect of reducing NOX emission is obvious, and the glass furnace combustion method based on the total oxygen gun has simple and stable production process, is easy to popularize and apply, and is worth popularizing.

Drawings

FIG. 1 is a schematic view of the internal structure of a glass kiln of an all-oxygen lance for a glass kiln, which is provided by the utility model;

FIG. 2 is a front view of a lance of a total oxygen lance for a glass furnace according to the present invention;

FIG. 3 is a front cross-sectional view of a lance of the total oxygen lance for a glass kiln, according to the present invention;

FIG. 4 is a side sectional view of a lance of the total oxygen lance for a glass furnace according to the present invention.

Illustration of the drawings:

1. a spray gun; 2. a glass kiln body; 3. glass liquid; 4. a burning gun; 5. a second inlet end; 6. an outer tube; 7. a first oxygen inlet; 8. a second oxygen inlet; 9. a valve block; 10. a first outlet end; 11. positioning pins; 12. a second outlet end; 13. an inner tube; 14. a first inlet end.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, one embodiment of the present invention is provided: a full oxygen lance for a glass kiln comprises a spray gun 1, wherein the spray gun 1 is respectively arranged at the left side and the right side of a glass kiln main body 2 to enable the spray gun to correspond to a combustion gun 4, an outer pipe 6 is arranged at one end of the spray gun 1 close to the glass kiln main body 2, a penetrating inner pipe 13 is arranged inside the outer pipe 6, the outer pipe 6 and the inner pipe 13 are hollow pipe bodies with openings at two ends, the flow cross section of the outer pipe 6 is larger than that of the inner pipe 13, a first outlet end 10 is arranged at one side of the inner pipe 13 close to the glass kiln main body 2, a first inlet end 14 is arranged at one end of the outer pipe 6 far away from the glass kiln main body 2, a second inlet end 5 is arranged inside the first inlet end 14, the second inlet end 5 is arranged inside a first oxygen inlet 7, a second oxygen inlet 8 is arranged at the lower side of the first oxygen inlet 7, under the condition that the oxygen pressure and the supply quantity are the same, because the inner pipe 13 and the outer pipe 6 of the spray gun 1 have different flow cross sections, the flow cross section of the inner pipe 13 is smaller, and the oxygen in the inner pipe 13 has higher ejection initial speed, thereby ensuring that the oxygen can be ejected to a far combustion area in the glass kiln main body 2; the cross section area of the outer pipe 6 is large, and oxygen in the outer pipe 6 is sprayed to a combustion area close to the glass kiln body 2, so that under the condition of proper gas pressure, alternate heating of the combustion area is accurately controlled by controlling different pipelines sprayed by the oxygen.

The side of the second oxygen inlet 8 far from the glass kiln main body 2 is provided with a valve group 9, when the adjusting valve group 9 assembly is changed, the oxygen flow of the inner pipe 13 and the outer pipe 6 is changed, so that the initial speeds of oxygen sprayed from the outer pipe 6 or the inner pipe 13 are different, the length of the generated flame is different, when the flow of oxygen from the inner pipe 13 is increased, the flame is longer, when the flow of oxygen from the inner pipe 13 is reduced, the flame is shorter, one side of the inner pipe 13 near the glass kiln main body 2 is provided with positioning pins 11 which are uniformly distributed, because the inner pipe 13 is fixed, molten glass 3 which is uniformly distributed is arranged at the bottom in the glass kiln main body 2, a combustion gun 4 is arranged above the spray gun 1, so that the flame combustion range of the combustion gun 4 can be changed by supplying oxygen through the spray gun 1, a second outlet end 12 is arranged inside the first outlet end 10, the outer pipe 6 is connected with a first inlet end 14, the opposite open end of the outer tube 6 is a first outlet end 10.

The working principle is as follows: firstly, the oxygen supply mode of the total oxygen lance is controlled, so that the ejection speed of oxygen is changed, the flame tip alternately reaches a specific combustion area, namely the inner pipe 13 and the outer pipe 6 of the total oxygen lance have different flow cross sections, aiming at the condition that the oxygen supply amount and the pressure of the same oxygen source are certain, the oxygen proportion of the inner pipe 13 and the outer pipe 6 is changed by changing the regulating valve group 9 to eject the oxygen to the specific combustion area in the glass kiln main body 2, so as to achieve the purpose of accurately controlling the alternately heated combustion area, which is beneficial to the glass melting and the temperature stability of the glass melting kiln, the flame tip alternately reaches the specific combustion area by changing the ejection speed of the oxygen, the continuous heating of the middle combustion area is avoided, the discharge concentration and the total discharge amount of NOX in the smoke of the glass kiln main body 2 are obviously reduced, the discharge concentration of the NOX can be reduced by 20-30%, the total energy consumption is reduced by 1.5-3.5%, the energy consumption is saved, the pollution to the environment is reduced, the spray gun 1 is simple in structure and convenient to use, only the total oxygen gun is required to be placed below the combustion gun 4 of the existing glass melting furnace, the equipment investment is low, the improvement can be carried out in a hot state, the non-stop furnace installation can be realized, the effect of reducing NOX emission is obvious, and the glass furnace combustion method based on the total oxygen gun is simple and stable in production process, easy to popularize and apply and worthy of great popularization.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a full oxygen rifle for glass kiln, includes spray gun (1), its characterized in that: spray gun (1) is equallyd divide and is do not set up in the glass kiln main part (2) left and right sides, the one end that spray gun (1) is close to glass kiln main part (2) all is provided with outer tube (6), inner tube (13) that run through all are provided with in outer tube (6) inside, one side that inner tube (13) is close to glass kiln main part (2) all is provided with first exit end (10), the one end that glass kiln main part (2) were kept away from in outer tube (6) all is provided with first entry end (14), first entry end (14) inside all is provided with second entry end (5), second entry end (5) all set up inside first oxygen import (7), first oxygen import (7) downside all is provided with second oxygen import (8).

2. The total oxygen lance for glass kilns as claimed in claim 1, wherein: and a valve group (9) is arranged on one side of the second oxygen inlet (8) far away from the glass kiln main body (2).

3. The total oxygen lance for glass kilns as claimed in claim 1, wherein: and positioning pins (11) which are uniformly distributed are arranged on one side of the inner pipe (13) close to the glass kiln main body (2).

4. The total oxygen lance for glass kilns as claimed in claim 1, wherein: the bottom in the glass kiln main body (2) is provided with uniformly distributed glass liquid (3).

5. The total oxygen lance for glass kilns as claimed in claim 1, wherein: and combustion guns (4) are arranged above the spray guns (1).

6. The total oxygen lance for glass kilns as claimed in claim 1, wherein: and a second outlet end (12) is arranged in each first outlet end (10).