CN-224230744-U - Secondary air oxygen distribution system of side-blown converter

Abstract

The utility model relates to the technical field of nonferrous metal smelting, in particular to a secondary air oxygen distribution system of a side-blown furnace, wherein a gas component analyzer is arranged at a flue gas outlet of the side-blown furnace, one end of a main secondary air pipe is connected with a blower, the other end of the main secondary air pipe is connected with a mixing pipe, the mixing pipe is arranged in a flue gas area of the side-blown furnace, a gas mixing device is arranged in the mixing pipe, a secondary air branch pipe is arranged on the main secondary air pipe, the secondary air branch pipe is connected with an oxygen pipe, a first flow regulating valve is arranged on the oxygen pipe, a second flow regulating valve is arranged on the main secondary air pipe, the second flow regulating valve is arranged between the blower and the secondary air branch pipe, and the gas component analyzer, the first flow regulating valve and the second flow regulating valve are connected with a control system. The utility model can accurately acquire the real-time combustion state and component information of the flue gas, accurately control the flow ratio of oxygen to air supply quantity, improve the accuracy of oxygen distribution, be beneficial to improving the combustion efficiency of the flue gas and reduce the emission of harmful substances.

Inventors

• CHEN TAO
• ZHANG XIAOTIAN
• Pan Keran
• ZHANG XIAOXUE
• DING KUI
• LANG ZHIHUI
• ZHAI QIUYAN
• TONG XIANGLING
• ZHAO GUOHUA
• Duan Xiuyun

Assignees

• 赤峰云铜有色金属有限公司

Dates

Publication Date

20260512

Application Date

20250409

Claims (5)

1. 1. A secondary air oxygen distribution system of a side-blown furnace is characterized by comprising a gas component analyzer (1), a main secondary air pipeline (2), a blower (3), a mixing pipe (4), a gas mixing device, secondary air branch pipes (5), an oxygen pipeline (6) and a control system (7), wherein the gas component analyzer (1) is arranged at a flue gas outlet of the side-blown furnace, one end of the main secondary air pipeline (2) is connected with the blower (3), the other end of the main secondary air pipeline is connected with the mixing pipe (4), the mixing pipe (4) is arranged in a flue gas area of the side-blown furnace, the gas mixing device is arranged in the mixing pipe (4), the gas mixing device comprises at least two perforated plates which are arranged at intervals along the gas flow direction, the pore diameters of the perforated plates gradually decrease layer by layer along the gas flow direction, the pore positions of the adjacent two perforated plates are staggered, the secondary air branch pipes (5) are arranged on the main secondary air pipeline (2), one end of the secondary air branch pipes (5) is connected with the oxygen pipeline (6), a second flow regulating valve (8) is arranged on the oxygen pipeline (6), the main pipeline (2) is provided with a second flow regulating valve (9), the second flow regulating valve (9) is arranged between the gas component analyzer (1) and the gas component analyzer (9) The first flow regulating valve (8) and the second flow regulating valve (9) are connected with the control system (7).
2. 2. The secondary air oxygen distribution system of the side-blown converter according to claim 1, wherein a cut-off valve is arranged on the oxygen pipeline (6), the cut-off valve is arranged between the first flow regulating valve (8) and the secondary air branch pipe (5), and the cut-off valve is connected with the control system (7).
3. 3. The secondary air oxygen distribution system of the side-blown converter according to claim 1, wherein the first flow regulating valve (8) and the second flow regulating valve are electromagnetic valves.
4. 4. A secondary air oxygen distribution system of a side-blown converter according to claim 1, characterized in that the control system (7) comprises a data processing module, an information storage module, a security module and a user interface module.
5. 5. The secondary air oxygen distribution system of the side-blown converter according to claim 1, wherein the air feeder (3) is a variable-frequency air feeder (3).

Description

Secondary air oxygen distribution system of side-blown converter Technical Field The utility model relates to the technical field of nonferrous metal smelting, in particular to a secondary air oxygen distribution system of a side blowing furnace. Background In the smelting industry, a side-blown converter is taken as important smelting equipment, and the operation efficiency and the environmental protection performance of the side-blown converter are directly related to the production benefit and the environmental protection. The side-blown converter can generate a large amount of flue gas in the smelting process, and the flue gas not only contains valuable gas components, but also possibly contains harmful substances, so that the treatment and control of the flue gas are particularly important. The traditional secondary air oxygen distribution system of the side-blown converter often adopts a simpler air distribution mode, and lacks accurate gas component analysis and flow regulation means. In the actual operation process, the oxygen distribution ratio of the secondary air is difficult to accurately control, and the oxygen distribution ratio cannot be adjusted in time according to the actual components in the flue gas. On one hand, the waste of oxygen resources and the increase of production cost can be caused, and on the other hand, the unreasonable oxygen distribution ratio can also influence the combustion effect of flue gas, so that the emission of harmful substances is increased and the environment is polluted. Disclosure of utility model Aiming at the problem that the oxygen distribution proportion of the secondary air in the prior art is difficult to accurately control, the utility model provides a secondary air oxygen distribution system of a side-blown furnace. In order to achieve the above purpose, the technical scheme of the utility model is as follows: The secondary air oxygen distribution system of the side-blowing furnace comprises a gas component analyzer, a main secondary air pipeline, a blower, a mixing pipe, a gas mixing device, secondary air branch pipes, an oxygen pipeline and a control system, wherein the gas component analyzer is arranged at a flue gas outlet of the side-blowing furnace, one end of the main secondary air pipeline is connected with the blower, the other end of the main secondary air pipeline is connected with the mixing pipe, the mixing pipe is arranged in a flue gas area of the side-blowing furnace, the gas mixing device is arranged in the mixing pipe, the gas mixing device comprises at least two perforated plates which are arranged at intervals along the air flow direction, the apertures of the perforated plates gradually decrease in a layer-by-layer manner along the air flow direction, the apertures of the adjacent two perforated plates are staggered, the secondary air branch pipes are arranged on the main secondary air pipeline, the secondary air branch pipes are connected with the oxygen pipeline, a first flow regulating valve is arranged on the oxygen pipeline, a second flow regulating valve is arranged between the blower and the secondary air branch pipes, and the second flow regulating valve is connected with the control system. Further, a shut-off valve is arranged on the oxygen pipeline and is arranged between the first flow regulating valve and the overgrate air branch pipe, and the shut-off valve is connected with the control system. Further, the first flow rate regulating valve and the second flow rate regulating valve are electromagnetic valves. Further, the control system comprises a data processing module, an information storage module, a security module and a user interface module. Further, the blower is a variable frequency blower. Compared with the prior art, the utility model has the beneficial effects that: The utility model provides a secondary air oxygen distribution system of a side-blown furnace, which monitors the smoke components at the smoke outlet of the side-blown furnace in real time through a gas component analyzer, can accurately acquire the real-time combustion state and component information of the smoke, provides accurate data support for subsequent oxygen distribution control, automatically adjusts the opening of a first flow regulating valve and a second flow regulating valve according to the real-time data of the gas component analyzer, accurately controls the flow ratio of oxygen to air quantity, improves the oxygen distribution accuracy, is beneficial to improving the combustion efficiency of the smoke, and reduces the emission of harmful substances. Drawings Embodiments of the utility model are further described below with reference to the accompanying drawings, in which: FIG. 1 shows a schematic structural diagram of an embodiment of a secondary air oxygen distribution system of a side-blown converter; FIG. 2 shows a schematic diagram of a secondary air oxygen distribution step of a side-blown converter; The drawing marks are