CN218884026U - Sintering oxygen-enriched ignition combustion device - Google Patents
Sintering oxygen-enriched ignition combustion device Download PDFInfo
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- CN218884026U CN218884026U CN202320080391.7U CN202320080391U CN218884026U CN 218884026 U CN218884026 U CN 218884026U CN 202320080391 U CN202320080391 U CN 202320080391U CN 218884026 U CN218884026 U CN 218884026U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model relates to the technical field of sintering process, in particular to a sintering oxygen-enriched ignition combustion device, which comprises an oxygen main pipe, a first oxygen pipeline, an air supply pipeline, an air-oxygen mixer and a mixed gas pipeline, wherein one end of the first oxygen pipeline is connected with the oxygen main pipe, the first oxygen pipeline is sequentially provided with a first quick cut-off valve and a pressure regulating valve, the other end of the first oxygen pipeline is connected with a second oxygen pipeline through a reducing adapter, and the second oxygen pipeline is sequentially provided with a flow regulating valve, a manual stop valve, a check valve and a flame arrester; the second oxygen pipeline is connected with an air inlet of the air-oxygen mixer, one end of the air supply pipeline is connected with the other air inlet of the air-oxygen mixer, an air outlet of the air-oxygen mixer is connected with the mixed air pipeline, and the other end of the air supply pipeline is provided with an air feeder. The oxygen concentration of oxygen-enriched combustion in the sintering process is increased through the oxygen pipeline, so that the blast furnace gas is fully combusted, the ignition temperature of sintering can be obviously improved, and the consumption of the blast furnace gas is reduced.
Description
Technical Field
The utility model relates to a sintering technology technical field especially relates to a sintering oxygen boosting ignition burner.
Background
The steel industry is an energy consumption key industry, the sintering machine is one of necessary equipment in the steel industry, the energy consumption of the sintering machine accounts for about 13-15% of the total energy consumption of the industry, and the energy consumption of an ignition furnace of the sintering machine accounts for about 12% of the sintering energy consumption; in order to save cost, most iron and steel enterprises adopt surplus low-calorific-value blast furnace gas as fuel of a sintering machine ignition furnace, the fuel is mixed with combustion air and then is combusted in the sintering machine ignition furnace, and the problem that the temperature in the sintering machine ignition furnace is low (the general ignition temperature is 1050 +/-50 ℃) exists in the sintering machine production process.
Aiming at the problem, enterprises mostly adopt high-calorific-value gas such as coke oven gas, converter gas and natural gas mixed in blast furnace gas to increase the temperature in an ignition furnace of the sintering machine, and in practical application, most enterprises lack gas sources of coke oven gas and natural gas, so that the enterprises need to communicate with related energy enterprises to newly build coke oven gas pipelines or natural gas pipelines, but the newly built pipelines can increase the sintering cost; and if only blast furnace gas is adopted, the consumption of the blast furnace gas is large, the temperature in the ignition furnace cannot be ensured, the production process requirements cannot be met, and the quality of the sintered ore is further influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an embodiment of the present invention provides a sintering oxygen-enriched ignition combustion apparatus.
The utility model discloses an aspect of implementation provides a sintering oxygen boosting ignition burner, including the oxygen house steward, still include first oxygen pipeline, supply-air duct, air-oxygen mixer and gas mixture pipeline, first oxygen pipeline one end is connected with the oxygen house steward, installs first quick shut-off valve and pressure regulating valve along the oxygen flow direction on the first oxygen pipeline in proper order, and the other end of first oxygen pipeline is connected the second oxygen pipeline through the reducing takeover, installs flow control valve, manual stop valve, check valve and spark arrester along the oxygen flow direction on the second oxygen pipeline in proper order; the second oxygen pipeline is connected with an air inlet of the air-oxygen mixer, one end of the air supply pipeline is connected with the other air inlet of the air-oxygen mixer, an air outlet of the air-oxygen mixer is connected with the mixed air pipeline, and the other end of the air supply pipeline is provided with an air feeder.
Compared with the prior art, the beneficial effects of the utility model reside in that: the oxygen concentration of oxygen-enriched combustion in the sintering process is increased through the oxygen pipeline, so that the blast furnace gas is fully combusted, the ignition quality of sintering can be obviously improved, the ignition temperature is increased, and the consumption of the blast furnace gas is reduced; in addition, after the ignition quality is improved, fe in the sinter 2 O 3 The content is increased, the needle-shaped calcium ferrite is increased, the phase structure of the sinter is improved, the drum strength of the sinter is improved, the utilization rate of coke powder is fully improved, and the consumption of the coke powder is reduced.
Optionally, a pressure gauge is installed on the first oxygen pipeline and located on the front side of the first quick cut-off valve; an oxygen flow meter is arranged on the front side of the flow regulating valve on the second oxygen pipeline, and a first pressure transmitter is arranged between the flow regulating valve and the manual stop valve on the second oxygen pipeline.
Optionally, a second pressure transmitter is mounted on the air supply pipeline; and a pressure difference transmitter is arranged on the mixed gas pipeline.
Optionally, a second quick-acting stop valve is installed between the manual stop valve and the check valve on the second oxygen pipeline.
Optionally, a bleeding pipeline is arranged between the manual stop valve and the second quick-cut-off valve on the second oxygen pipeline, and a bleeding valve is mounted on the bleeding pipeline.
Optionally, the system further comprises a PLC controller and an industrial computer, wherein the first quick block valve, the pressure regulating valve, the flow regulating valve, the oxygen flow meter and the first pressure transmitter are connected with the PLC controller, and the PLC controller is connected with the industrial computer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a sintering oxygen-enriched ignition combustion device according to an embodiment of the present invention;
fig. 2 is a schematic view of the structure in direction a of fig. 1.
The system comprises an oxygen main pipe 1, a first oxygen pipeline 2, an air supply pipeline 3, an air-oxygen mixer 4, a mixed gas pipeline 5, a first quick cut-off valve 6, a pressure regulating valve 7, a reducing adapter 8, a second oxygen pipeline 9, a flow regulating valve 10, a manual stop valve 11, a check valve 12, a flame arrester 13, an air feeder 14, a pressure gauge 15, an oxygen flow meter 16, a first pressure transmitter 17, a second pressure transmitter 18, a differential pressure transmitter 19, a second quick cut-off valve 20, a bleeding pipeline 21, a bleeding valve 22, a PLC 23 and an industrial computer 24.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Referring to fig. 1, an embodiment of the present invention provides a sintering oxygen-enriched ignition combustion apparatus, including an oxygen main 1, further including a first oxygen pipeline 2, a supply air pipeline 3, an air-oxygen mixer 4 and a mixture gas pipeline 5, one end of the first oxygen pipeline 2 is connected with the oxygen main 1, a first fast cut-off valve 6 and a pressure regulating valve 7 are sequentially installed on the first oxygen pipeline 2 along an oxygen flow direction, the other end of the first oxygen pipeline 2 is connected with a second oxygen pipeline 9 through a reducing adapter 8, a diameter of the second oxygen pipeline 9 is greater than that of the first oxygen pipeline 2, a flow regulating valve 10, a manual cut-off valve 11, a check valve 12 and a flame arrester 13 are sequentially installed on the second oxygen pipeline 9 along the oxygen flow direction; the second oxygen pipeline 9 is connected with an air inlet of the air-oxygen mixer 4, one end of the air supply pipeline 3 is connected with the other air inlet of the air-oxygen mixer 4, an air outlet of the air-oxygen mixer 4 is connected with the mixed gas pipeline 5, and the other end of the air supply pipeline 3 is provided with an air supply machine 14.
In practice, the air-oxygen mixer 4 is a conventional device for mixing air and oxygen; a pressure gauge 15 is arranged on the first oxygen pipeline 2 and positioned on the front side of the first quick cut-off valve 6; an oxygen flow meter 16 is arranged on the second oxygen pipeline 9 in front of the flow regulating valve 10, and a first pressure transmitter 17 is arranged on the second oxygen pipeline 9 between the flow regulating valve 10 and the manual stop valve 11.
A second pressure transmitter 18 is arranged on the air supply pipeline 3; a differential pressure transmitter 19 is mounted on the mixture pipe 5.
And a second quick cut-off valve 20 is arranged on the second oxygen pipeline 9 and positioned between the manual cut-off valve 11 and the check valve 12.
A bleeding pipeline 21 is arranged between the manual stop valve 11 and the second quick stop valve 20 on the second oxygen pipeline 9, and a bleeding valve 22 is arranged on the bleeding pipeline 21.
The system also comprises a PLC (programmable logic controller) 23 and an industrial computer 24, wherein the first quick block valve 6, the pressure regulating valve 7, the flow regulating valve 10, the oxygen flow meter 16 and the first pressure transmitter 17 are connected with the PLC 23, and the PLC 23 is connected with the industrial computer 24; in implementation, the second pressure transmitter 18, the differential pressure transmitter 19 and the second fast shut-off valve 20 can also be connected with the PLC controller 23; in implementation, the oxygen flowmeter 16 sends a flow signal to the PLC controller 23 in real time, the first pressure transmitter 17 and the second pressure transmitter 18 send pressure signals to the PLC controller 23 in real time, the differential pressure transmitter 19 sends differential pressure signals to the PLC controller 23 in real time, and the PLC controller 23 sends the received signals to the industrial computer 24 for display after receiving the signals; in actual production, the first quick cut-off valve 6 and the second quick cut-off valve 20 can be controlled by the PLC to cut off the first oxygen pipeline 2 and the second oxygen pipeline respectively, and the opening degrees of the pressure regulating valve 7 and the flow regulating valve 10 can be adjusted to complete pressure regulation and flow regulation.
In implementation, as shown in fig. 2, the second oxygen duct 9 may be divided into a plurality of oxygen branch pipes, and the corresponding air supply duct is also divided into a plurality of air supply branch pipes, and one oxygen branch pipe and one air supply branch pipe are connected to one air-oxygen mixer 4 in a group, so as to realize multi-branch air supply.
In production, oxygenOxygen in the gas main pipe 1 sequentially flows through a first quick cut-off valve 6, a pressure regulating valve 7 and a reducing connecting pipe 8 from a first oxygen pipeline 2 to enter a second oxygen pipeline 9, then sequentially flows through a flow regulating valve 10, a manual stop valve 11, a second quick cut-off valve 20, a check valve 12 and a flame arrester 13 to enter an air-oxygen mixer 4, the oxygen is mixed with air conveyed by a blower 14 through an air supply pipeline 3 in the air-oxygen mixer 4 to provide oxygen content in combustion-supporting air, increase oxygen-enriched combustion oxygen concentration in a sintering process, ensure that blast furnace gas is fully combusted, obviously improve the ignition quality of sintering, improve the ignition temperature and reduce the consumption of the blast furnace gas; in addition, after the ignition quality is improved, fe in the sinter 2 O 3 The content is increased, the needle-shaped calcium ferrite is increased, the phase structure of the sinter is improved, the drum strength of the sinter is improved, the utilization rate of coke powder is fully improved, and the consumption of the coke powder is reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. A sintering oxygen-enriched ignition combustion device comprises an oxygen main pipe and is characterized by further comprising a first oxygen pipeline, an air supply pipeline, an air-oxygen mixer and a mixed gas pipeline, wherein one end of the first oxygen pipeline is connected with the oxygen main pipe, a first quick cut-off valve and a pressure regulating valve are sequentially arranged on the first oxygen pipeline along the oxygen flowing direction, the other end of the first oxygen pipeline is connected with a second oxygen pipeline through a reducing connecting pipe, and a flow regulating valve, a manual stop valve, a check valve and a flame arrester are sequentially arranged on the second oxygen pipeline along the oxygen flowing direction; the second oxygen pipeline is connected with one air inlet of the air-oxygen mixer, one end of the air supply pipeline is connected with the other air inlet of the air-oxygen mixer, the air outlet of the air-oxygen mixer is connected with the mixed air pipeline, and the other end of the air supply pipeline is provided with an air feeder.
2. A sintered oxygen-rich ignition combustion device as set forth in claim 1, wherein a pressure gauge is installed on the first oxygen pipe in front of the first quick cut-off valve; an oxygen flowmeter is arranged on the second oxygen pipeline and positioned on the front side of the flow regulating valve, and a first pressure transmitter is arranged on the second oxygen pipeline and positioned between the flow regulating valve and the manual stop valve.
3. A sintered oxyfuel ignition combustion device as defined in claim 2, wherein the supply duct is provided with a second pressure transmitter; and a pressure difference transmitter is arranged on the mixed gas pipeline.
4. A sintered oxygen-rich ignition combustion device as claimed in claim 1, wherein a second quick shut-off valve is installed on the second oxygen conduit between the manual shut-off valve and the check valve.
5. A sintered oxygen-rich ignition combustion device as claimed in claim 4, wherein a bleeding pipeline is provided on the second oxygen pipeline between the manual cut-off valve and the second quick cut-off valve, and a bleeding valve is installed on the bleeding pipeline.
6. A sintered oxyfuel ignition combustion device as defined in claim 2, further comprising a PLC controller and an industrial computer, wherein the first quick shut-off valve, the pressure regulating valve, the flow regulating valve, the oxygen flow meter and the first pressure transmitter are connected to the PLC controller, and the PLC controller is connected to the industrial computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080391.7U CN218884026U (en) | 2023-01-12 | 2023-01-12 | Sintering oxygen-enriched ignition combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080391.7U CN218884026U (en) | 2023-01-12 | 2023-01-12 | Sintering oxygen-enriched ignition combustion device |
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| Publication Number | Publication Date |
|---|---|
| CN218884026U true CN218884026U (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320080391.7U Active CN218884026U (en) | 2023-01-12 | 2023-01-12 | Sintering oxygen-enriched ignition combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218884026U (en) |
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2023
- 2023-01-12 CN CN202320080391.7U patent/CN218884026U/en active Active
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