Hydrogen and oxygen auxiliary combustion device of glass kiln

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By using hydrogen and oxygen-assisted combustion devices in glass kilns, combustion efficiency and natural gas utilization rate are improved, the problem of low thermal efficiency of the kilns is solved, and more efficient energy utilization and lower pollution emissions are achieved.

CN222352926UActive Publication Date: 2025-01-14HENGSHUI HENGYIN ENTERPRISE MANAGEMENT CO LTD

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Patent Information

Application Number: CN202323543788.4
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2023-12-25
Publication Date: 2025-01-14
Estimated Expiration: 2033-12-25

AI Technical Summary

Technical Problem

The thermal efficiency of glass kilns is low, resulting in high fuel costs and high emissions of polluted gases. In the prior art, the utilization rate of natural gas is only 25% to 35%.

Method used

Design a glass kiln hydrogen and oxygen auxiliary combustion device, including hydrogen production system, oxygen supply system, flame arrester, blower, hydrogen natural gas mixing device and burning gun, to improve combustion efficiency through the mixing of hydrogen and oxygen and natural gas, and Optimize the combustion process by purification and control systems.

Benefits of technology

The utilization efficiency of oxygen, hydrogen and natural gas is improved by more than 15%, energy consumption and polluted gas emissions are reduced, the heating and insulation efficiency of the kiln is enhanced, and the quality and production efficiency of glass products are improved.

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Abstract

The utility model is suitable for the technical field of glass production equipment, and provides a hydrogen and oxygen auxiliary combustion device of a glass kiln. Comprising a hydrogen production system, an oxygen supply system, a first flame arrester, an air blower, a hydrogen and natural gas mixing device, a second flame arrester, a kiln, a first burning gun and a second burning gun, a first hydrogen output end of the hydrogen production system is respectively connected to a hydrogen input end of the hydrogen and natural gas mixing device and an input end of the first flame arrester through a first tee joint, an output end of the first flame arrester is connected to an input end of the second burning gun, and the second burning gun is arranged on the kiln; the second hydrogen output end of the hydrogen production system and the output end of the oxygen supply system are connected to the input end of the air blower through a second tee joint; the end of the second tee away from the oxygen supply system and the blower is connected with an air input pipe; the output end of the air blower is arranged in the kiln; the output end of the hydrogen and natural gas mixing device is connected to a first burning gun through a second flame arrester, and the first burning gun is arranged on the kiln.

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Description

Technical Field

[0001] The utility model relates to the technical field of glass production equipment, in particular to a hydrogen and oxygen auxiliary combustion device for a glass kiln. Background Art

[0002] The glass industry is a high energy consumption industry. Fuel costs account for about 35% to 50% of the glass cost. The production process will use 3000m 3 / h-5000m 3 / h of natural gas, the thermal efficiency of the existing glass melting furnace is only 25% to 35% on average, which is low. In order to solve this technical problem, a hydrogen and oxygen auxiliary combustion device for a glass furnace is proposed. Utility Model Content

[0003] The utility model aims to provide a hydrogen and oxygen auxiliary combustion device for a glass furnace to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydrogen and oxygen auxiliary combustion device for a glass kiln comprises: a hydrogen production system, an oxygen supply system, a first flame arrester, a blower, a hydrogen and natural gas mixing device, a second flame arrester, a kiln, a first burner and a second burner; the first hydrogen output end of the hydrogen production system is respectively connected to the hydrogen input end of the hydrogen and natural gas mixing device and the input end of the first flame arrester through a first tee, the output end of the first flame arrester is connected to the input end of the second burner, and the second burner is arranged on the kiln; the second hydrogen output end of the hydrogen production system and the output end of the oxygen supply system are connected to the input end of the blower through a second tee; the second tee is connected to an air input pipe away from the oxygen supply system and the blower end; the output end of the blower is arranged inside the kiln; the output end of the hydrogen and natural gas mixing device is connected to the first burner through the second flame arrester, and the first burner is arranged on the kiln.

[0006] In some embodiments: the input end of the first flame arrester is connected to the first end of the first three-way connection through a proportional regulating valve.

[0007] In some embodiments: the hydrogen production system is a low-pressure electrolysis hydrogen production system or a photovoltaic electrolysis hydrogen production system.

[0008] In some embodiments, the first hydrogen output end of the hydrogen production system is connected to the input end of the first purification system, and the output end of the first purification system is connected to the second end of the first tee.

[0009] In some embodiments: one end of the second three-way connection is connected to the input end of the second purification system, and the output end of the second purification system is connected to the input end of the blower through a control valve.

[0010] In some embodiments: the first purification system and the second purification system use molecular sieve adsorption and purification devices.

[0011] In some embodiments: the hydrogen-natural gas mixing device includes a ratio regulating valve and a pulse device.

[0012] In some embodiments: the input port of the hydrogen-natural gas mixing device is connected to the natural gas pipeline.

[0013] In some embodiments: a first shut-off valve is disposed on the connecting pipe between the hydrogen and natural gas mixing device and the second flame arrester.

[0014] In some embodiments: a second shut-off valve is provided on the connecting pipe between the first three-way connection and the hydrogen input end of the hydrogen-natural gas mixing device.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the hydrogen and oxygen auxiliary combustion device can improve the utilization efficiency of oxygen, hydrogen and natural gas by more than 15%, thereby reducing costs and increasing efficiency; the supply of natural gas, oxygen and hydrogen can be centrally controlled and adjusted to make the heating and insulation efficiency of the kiln higher and reduce energy consumption; through the use of the new device, the combustion of natural gas and hydrogen is more complete, reducing the emission of polluting gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a hydrogen and oxygen auxiliary combustion device for a glass kiln in an embodiment of the utility model.

[0017] In the figure: 1-hydrogen production system, 2-oxygen supply system, 3-first purification system, 4-second purification system, 5-first flame arrester, 6-blower, 7-hydrogen and natural gas mixing device, 8-second flame arrester, 9-kiln, 10-first burner, 11-second burner. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1, a structural diagram of a hydrogen and oxygen assisted combustion device for a glass kiln provided in Example 1 of the utility model, the hydrogen and oxygen assisted combustion device for a glass kiln comprising: a hydrogen production system 1, an oxygen supply system 2, a first flame arrester 5, a blower 6, a hydrogen and natural gas mixing device 7, a second flame arrester 8, a kiln 9, a first burner 10 and a second burner 11; the first hydrogen output end of the hydrogen production system 1 is respectively connected to the hydrogen input end of the hydrogen and natural gas mixing device 7 and the input end of the first flame arrester 5 through a first tee, the output end of the first flame arrester 5 is connected to the input end of the second burner 11, and the second burner 11 is arranged on the kiln 9; the second hydrogen output end of the hydrogen production system 1 and the output end of the oxygen supply system 2 are connected to the input end of the blower 6 through a second tee; the second tee is connected to an air input pipe at the end away from the oxygen supply system 2 and the blower 6; the output end of the blower 6 is arranged inside the kiln 9; the output end of the hydrogen and natural gas mixing device 7 is connected to the first burner 10 through the second flame arrester 8, and the first burner 10 is arranged on the kiln 9.

[0020] The utility model hydrogen production system 1 produces hydrogen and oxygen according to the demand of the kiln. A part of the hydrogen passes through the ratio regulating valve and then passes through 5 for combustion and use. It is mainly used for independent hydrogen supply when rapid temperature rise and high temperature are required. The other part of the hydrogen passes through the hydrogen natural gas mixing device 7, and is fully mixed with natural gas. It is supplied according to the temperature requirements of the kiln 9. In this way, the temperature of the kiln 8 can be guaranteed according to the calorific value requirements, while reducing the use of natural gas. It is then burned and used after passing through the second flame arrester 8. The oxygen supply system 2 collects 1000m 3 / h of oxygen enters the kiln 9 through the blower 6 for oxygen supply. The blower 6 is connected to the air. When the oxygen amount is insufficient, hydrogen is used to supplement it to ensure the normal temperature of the kiln.

[0021] The utility model further deepens the hydrogen and oxygen auxiliary devices by utilizing oxygen and hydrogen to assist combustion in the glass kiln, thereby achieving the technical effect of achieving a hydrogen and natural gas combustion utilization rate of about 50%. Due to the improvement of the hydrogen and natural gas combustion utilization rate, the pollutant content is reduced to more than 15%. In addition, due to the increase in oxygen supply, the blower selection and air volume can be greatly reduced, thereby reducing the heat carried away by the air volume by more than 20%, ensuring that the temperature can be maintained to a greater extent. Due to the change in the two-pipe supply mode of hydrogen and natural gas, the calorific value of the kiln is more stable, and the quality and production efficiency of glass products are improved. Through the use of the new device, natural gas and hydrogen can be burned more fully, reducing the emission of polluting gases.

[0022] As a preferred embodiment of the utility model, the input end of the first flame arrester 5 is connected to the first end of the first three-way connection through a proportional regulating valve. The proportional regulating valve is provided to facilitate adjustment of the hydrogen flow rate.

[0023] As a preferred embodiment of the present invention, the first hydrogen output end of the hydrogen production system 1 is connected to the input end of the first purification system 3, and the output end of the first purification system 3 is connected to the second end of the first tee. By setting up the first purification system 3, it is convenient to purify the hydrogen and completely remove the moisture in the hydrogen.

[0024] As a preferred embodiment of the present utility model, the hydrogen production system 1 is a low-pressure electrolysis hydrogen production system or a photovoltaic electrolysis hydrogen production system.

[0025] It should be noted that the actual requirements of kiln combustion for hydrogen purity and dew point are used to select hydrogen production models. It is recommended to use photovoltaic electrolysis to produce hydrogen, which can reduce secondary conversion of electricity and be more efficient.

[0026] As a preferred embodiment of the present invention, one end of the second three-way valve is connected to the input end of the second purification system 4, and the output end of the second purification system 4 is connected to the input end of the blower 6 through a control valve. By setting up the second purification system 4, oxygen can be purified and the moisture in the hydrogen can be completely removed.

[0027] As a preferred embodiment of the utility model, the first purification system 3 and the second purification system 4 use molecular sieve adsorption and purification devices. Since the gas flow rate is relatively high, the use of molecular sieve adsorption and purification devices can completely remove the moisture in the gas.

[0028] It should be noted that by setting up the oxygen supply system 2, the glass kiln factory can provide surplus oxygen according to the actual supply situation, and through the induced air of the blower, the oxygen content in the combustion process is increased to about 50%, thereby ensuring the combustion efficiency.

[0029] As a preferred embodiment of the utility model, the hydrogen-natural gas mixing device 7 includes a ratio regulating valve and a pulse device. The hydrogen-natural gas mixing device 7 regulates hydrogen and natural gas through the ratio regulating valve and the pulse device, so that hydrogen and natural gas are fully mixed to ensure uniform combustion heat.

[0030] As a preferred embodiment of the present invention, the input port of the hydrogen-natural gas mixing device 7 is connected to the natural gas pipeline. The input port of the hydrogen-natural gas mixing device 7 is connected to the natural gas pipeline through a third cut-off valve.

[0031] As a preferred embodiment of the utility model, a first cut-off valve is provided on the connecting pipe between the hydrogen and natural gas mixing device 7 and the second flame arrester 8 .

[0032] As a preferred embodiment of the present utility model, a second shut-off valve is provided on the connecting pipe between the first three-way connection and the hydrogen input end of the hydrogen-natural gas mixing device 7 .

[0033] The system also includes a control system, which is used to collect parameters such as the temperature of the kiln, the pressure and flow of natural gas, oxygen and hydrogen, and to determine whether an alarm signal or a shutdown signal is required based on the above parameters. The alarm values of each parameter are required to be able to be modified and saved by the host computer.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hydrogen and oxygen assisted combustion device for a glass furnace, characterized in that: include: A hydrogen production system (1), an oxygen supply system (2), a first flame arrester (5), a blower (6), a hydrogen and natural gas mixing device (7), a second flame arrester (8), a kiln (9), a first burner (10) and a second burner (11); a first hydrogen output end of the hydrogen production system (1) is connected to a hydrogen input end of the hydrogen and natural gas mixing device (7) and an input end of the first flame arrester (5) through a first tee, the output end of the first flame arrester (5) is connected to an input end of the second burner (11), and the second burner (11) is provided with a first tee. The invention relates to a kiln (9); a second hydrogen output end of the hydrogen production system (1) and an output end of the oxygen supply system (2) are connected to an input end of a blower (6) through a second tee; an air input pipe is connected to an end of the second tee away from the oxygen supply system (2) and the blower (6); an output end of the blower (6) is arranged inside the kiln (9); an output end of the hydrogen and natural gas mixing device (7) is connected to a first burner (10) through a second flame arrester (8), and the first burner (10) is arranged on the kiln (9).

2. A hydrogen and oxygen assisted combustion device for a glass furnace according to claim 1, characterized in that: The input end of the first flame arrester (5) is connected to the first end of the first three-way connection through a proportional regulating valve.

3. The hydrogen and oxygen auxiliary combustion device for a glass furnace according to claim 1, characterized in that: The hydrogen production system (1) is a low-pressure electrolysis hydrogen production system or a photovoltaic electrolysis hydrogen production system.

4. A hydrogen and oxygen assisted combustion device for a glass furnace according to claim 1, characterized in that: The first hydrogen output end of the hydrogen production system (1) is connected to the input end of the first purification system (3), and the output end of the first purification system (3) is connected to the second end of the first tee.

5. A hydrogen and oxygen auxiliary combustion device for a glass furnace according to claim 4, characterized in that: One end of the second three-way connection is connected to the input end of the second purification system (4), and the output end of the second purification system (4) is connected to the input end of the blower (6) through a control valve.

6. A hydrogen and oxygen assisted combustion device for a glass furnace according to claim 5, characterized in that: The first purification system (3) and the second purification system (4) use molecular sieve adsorption and purification devices.

7. The hydrogen and oxygen auxiliary combustion device for a glass furnace according to claim 1, characterized in that: The hydrogen and natural gas mixing device (7) comprises a proportional regulating valve and a pulse device.

8. The hydrogen and oxygen auxiliary combustion device for a glass furnace according to claim 1, characterized in that: The input port of the hydrogen-natural gas mixing device (7) is connected to the natural gas pipeline.

9. The hydrogen and oxygen auxiliary combustion device for a glass furnace according to claim 1, characterized in that: A first cut-off valve is provided on the connecting pipe between the hydrogen and natural gas mixing device (7) and the second flame arrester (8).

10. A hydrogen and oxygen auxiliary combustion device for a glass furnace according to claim 9, characterized in that: A second shut-off valve is provided on the connecting pipe between the first three-way connection and the hydrogen input end of the hydrogen and natural gas mixing device (7).