CN215864638U - Sintering system - Google Patents
Sintering system Download PDFInfo
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- CN215864638U CN215864638U CN202122479568.4U CN202122479568U CN215864638U CN 215864638 U CN215864638 U CN 215864638U CN 202122479568 U CN202122479568 U CN 202122479568U CN 215864638 U CN215864638 U CN 215864638U
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Abstract
The utility model discloses a sintering system which comprises a preheating furnace and an ignition furnace, wherein a gas heat exchanger is arranged on the preheating furnace, a gas inlet pipe and a gas outlet pipe are arranged on the gas heat exchanger, the gas outlet pipe is connected to a burner of the ignition furnace, on-off valves are respectively arranged on the gas inlet pipe and the gas outlet pipe, heat exchangers are respectively arranged on two sides of a sintering trolley of the ignition furnace, one side, facing the sintering trolley, of each heat exchanger is detachably connected with a first heat insulation layer, an air inlet pipe and an air outlet pipe are arranged on each heat exchanger, branch pipes of the gas inlet pipe are connected to the air inlet pipe in a branching mode, the air outlet pipe is connected to the burner of the ignition furnace, and on-off valves are arranged on the air inlet pipe and the air outlet pipe. The utility model can utilize the heat exchanger on the ignition furnace to preheat the coal gas when the preheating furnace is in fault maintenance, does not need to stop the machine for maintenance, is convenient to switch, ensures the combustion sufficiency of the coal gas, ensures the utilization sufficiency of the coal gas, ensures the sintering temperature to reach the standard and ensures the sintering quality.
Description
Technical Field
The utility model relates to the technical field of sintering processing equipment, in particular to a sintering system.
Background
The gas for roasting used in the sintering workshop of the sintering plant is accessed from an external net, reaches a gas preheating furnace of the sintering machine through an in-plant pipe network, is heated to 80 ℃ by the preheating furnace and then is sent to an ignition furnace to roast the sintered ore. Usually, a communicating pipe is arranged between a gas inlet pipeline and a gas outlet pipeline of a preheating furnace, a blind plate is arranged on the communicating pipe, when the preheating furnace is in a normal state, the blind plate cuts off the communicating pipe, so that gas normally enters the preheating furnace from the gas inlet pipeline to be heated, the heated gas is output to an ignition furnace from the gas outlet pipeline, when the preheating furnace fails, a sintering system is required to be shut down for maintenance, the preheating furnace is purged, at the moment, the gas inlet pipeline and the gas outlet pipeline are required to be respectively cut off by the blind plate, the blind plate on the communicating pipe is taken out, so that the gas directly enters the gas outlet pipeline from the gas inlet pipeline and then directly reaches the ignition furnace, and normal preheating can be recovered after the preheating furnace is qualified for maintenance, by adopting the mode, the switching operation is inconvenient, the efficiency is low, the safety risk exists, and the gas directly enters the ignition furnace without being preheated, the combustion is difficult to ensure fully, the utilization rate of the coal gas is reduced, the consumption of the coal gas is increased, the sintering temperature is influenced, and the sintering quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and provide a sintering system which aims to improve the prior art and solve the problems that the prior art has inconvenient switching and low efficiency when a preheating furnace fails and needs shutdown maintenance, fuel is not preheated and is directly introduced into an ignition furnace, the sufficient combustion rate is low, the consumption is high, and the sintering quality is influenced.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a sintering system, includes preheater and ignition furnace, be provided with the coal gas heat exchanger on the preheater, be provided with coal gas inlet tube and coal gas outlet pipe on the coal gas heat exchanger, the coal gas outlet pipe is connected to the nozzle of ignition furnace, be provided with the on-off valve on coal gas inlet tube and the coal gas outlet pipe respectively, the ignition furnace is provided with heat exchanger respectively in the both sides of sintering platform truck to heat exchanger can dismantle towards sintering platform truck one side and be connected with insulating layer one, is provided with intake pipe and outlet duct on the heat exchanger, coal gas inlet tube branch is connected to the intake pipe, and the outlet duct is connected to the nozzle of ignition furnace, is provided with the on-off valve on intake pipe and the outlet duct.
Furthermore, a second heat insulation layer is arranged on one side of the heat exchanger, which is back to the sintering trolley.
Furthermore, when the heat exchanger is used for preheating the coal gas, the first heat insulation layer is detached from the side, facing the sintering trolley, of the heat exchanger and then is installed to the side, facing away from the sintering trolley, of the heat exchanger to form a second heat insulation layer.
Further, a combustion-supporting gas heat exchanger is further arranged on the preheating furnace, a combustion-supporting gas inlet pipe and a combustion-supporting gas outlet pipe are arranged on the combustion-supporting gas heat exchanger, and the combustion-supporting gas outlet pipe is connected to a burner of the ignition furnace.
Furthermore, the preheating furnace is provided with a hearth, the preheating combustion gas pipe conveys coal gas to the preheating burner on the hearth, and the coal gas is combusted in the hearth to generate flue gas for preheating.
Furthermore, the combustion-supporting gas heat exchanger and the coal gas heat exchanger are sequentially connected in series along the flowing direction of the flue gas.
Compared with the prior art, the utility model has the advantages that:
when the preheating furnace is in fault maintenance, the sintering system can utilize the heat exchanger on the ignition furnace to temporarily preheat the coal gas, does not need shutdown maintenance, is convenient to switch, ensures that the coal gas introduced into the burner of the ignition furnace is preheated, improves the combustion sufficiency, improves the combustion heat value, improves the utilization sufficiency of the coal gas, reduces the coal gas consumption, ensures that the sintering temperature reaches the standard, and ensures the sintering quality.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a sintering system according to the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a sintering system according to the present invention;
fig. 3 is a schematic structural view of a sintering system according to a third embodiment of the present invention.
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.
According to the sintering system disclosed by the embodiment of the utility model, when the preheating furnace breaks down and needs shutdown maintenance, switching can be conveniently carried out, the production continuity is ensured, and the fuel gas introduced into the ignition furnace is ensured to be preheated, so that the combustion sufficiency of the fuel gas is ensured, the sintering temperature is ensured to reach the standard, and the sintering quality is ensured.
As shown in fig. 1 to 3, a sintering system mainly comprises a preheating furnace 1 and an ignition furnace 2, wherein the preheating furnace 1 preheats gas and combustion-supporting gas by using flue gas generated by gas combustion, specifically, the preheating furnace 1 is provided with a gas heat exchanger 3, the gas heat exchanger 3 is provided with a gas inlet pipe 31 and a gas outlet pipe 32, the gas outlet pipe 32 is connected to a burner of the ignition furnace 2, the gas inlet pipe 31 and the gas outlet pipe 32 are respectively provided with an on-off valve, the preheating furnace 1 is further provided with a combustion-supporting gas heat exchanger 4, the combustion-supporting gas heat exchanger 4 is provided with a combustion-supporting gas inlet pipe 41 and a combustion-supporting gas outlet pipe 42, the combustion-supporting gas outlet pipe 42 is connected to a burner of the ignition furnace 2, and a mode of only preheating gas or a mode of preheating both gas and combustion-supporting gas can be adopted;
the preheating furnace 1 is provided with a hearth 11, a preheating combustion gas pipe conveys gas to a preheating burner on the hearth 11, the gas is combusted in the hearth 11 to generate flue gas for preheating, the combustion-supporting gas heat exchanger 4 and the gas heat exchanger 3 are sequentially arranged in series along the flow direction of the flue gas, namely, the combustion-supporting gas heat exchanger 4 is positioned in a high-temperature flue gas area, the gas heat exchanger 3 is positioned in a low-temperature flue gas area, the combustion-supporting gas and the gas are fully preheated through the flue gas and then enter the ignition furnace, so that the combustion sufficiency is improved, the calorific value generated by combustion is improved, the sintering temperature is ensured to reach the standard, the sintering quality is ensured, the hearth is also provided with a fire baffle plate for separation, the fire baffle plate is provided with a plurality of through holes for the flue gas to pass through, and the fire baffle plate prevents flame generated by the combustion of the gas from directly acting on the combustion-supporting gas heat exchanger 4 and the gas heat exchanger 3 to cause the damage, the use stability and the service life of the combustion-supporting gas heat exchanger 4 and the gas heat exchanger 3 are ensured;
the ignition furnace 2 is provided with heat exchangers 6 on two sides of the sintering trolley 5 respectively, one side of each heat exchanger 6 facing the sintering trolley 5 is detachably connected with a first heat insulation layer 7, an air inlet pipe 61 and an air outlet pipe 62 are arranged on each heat exchanger 6, a branched branch of the coal gas inlet pipe 31 is connected to the air inlet pipe 61, the air outlet pipe 62 is connected to a burner of the ignition furnace 2, and on-off valves are arranged on the air inlet pipe 61 and the air outlet pipe 62.
When the preheating furnace 1 is in a normal state, the on-off valves on the air inlet pipe 61 and the air outlet pipe 62 are in a closed state, and the first heat-insulating layer 7 is installed on one side, facing the sintering trolley 5, of the heat exchanger 6, so that the heat exchanger 6 is prevented from being influenced by heat of the sintering trolley 5, the service life of the heat exchanger 6 is guaranteed, meanwhile, the heat on the sintering trolley 5 is prevented from being dissipated outwards by the first heat-insulating layer 7, the heat utilization rate is increased, the sintering temperature is guaranteed to reach the standard and be stable, the sintering quality is guaranteed, at the moment, the on-off valves on the gas inlet pipe 31 and the gas outlet pipe 32 are in an open state, so that gas is introduced into the gas heat exchanger 3, preheated and then introduced into the ignition furnace for combustion, the combustion sufficiency is guaranteed, and the sintering quality is guaranteed; when the preheating furnace 1 is in failure and needs, the on-off valves on the gas inlet pipe 31 and the gas outlet pipe 32 are closed, the on-off valves on the gas inlet pipe 61 and the gas outlet pipe 62 are opened, and the heat insulation layer I7 on one side, facing the sintering trolley 5, of the heat exchanger 6 is detached, so that the gas is introduced into the heat exchanger 6 and is preheated by the sintering trolley 5, the preheated gas is introduced into the ignition furnace for combustion, the combustion sufficiency can be ensured, and the sintering quality can be ensured.
As shown in fig. 3, the same structure can be adopted for the combustion-supporting gas, or as shown in fig. 1 and fig. 2, a bypass pipe 43 is arranged between a combustion-supporting gas inlet pipe 41 and a combustion-supporting gas outlet pipe 42, an on-off valve is arranged on the bypass pipe 43, when the preheating furnace 1 is in a normal condition, the bypass pipe 43 is in an off state, the combustion-supporting gas is introduced into the combustion-supporting gas heat exchanger 4, is preheated and then is introduced into the ignition furnace, and when the preheating furnace 1 is in a fault and needs the on-off valve on the combustion-supporting gas inlet pipe 41 and the combustion-supporting gas outlet pipe 42 is closed, the on-off valve on the bypass pipe 43 is opened, so that the combustion-supporting gas is directly conveyed to the combustion-supporting gas outlet pipe 42 through the combustion-supporting gas inlet pipe 41 to the ignition furnace.
As shown in fig. 2, a second thermal insulation layer 8 is disposed on a side of the heat exchanger 6 opposite to the sintering pallet 5, and when the gas is preheated by the heat exchanger 6, the first thermal insulation layer 7 is detached from the side of the heat exchanger 6 facing the sintering pallet 5 and then attached to the side of the heat exchanger 6 opposite to the sintering pallet 5 to form the second thermal insulation layer 8, that is, the first thermal insulation layer 7 and the second thermal insulation layer 8 may be completely two different components, or the first thermal insulation layer 7 may be replaced to form the second thermal insulation layer 8, and the first thermal insulation layer 7 and the second thermal insulation layer 8 are substantially the same component. When the heat exchanger 6 is used for preheating the coal gas, the heat insulation layer II 8 is used for avoiding excessive heat loss, and the efficiency of preheating the coal gas through the sintering trolley 5 is improved.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.
Claims (6)
1. A sintering system is characterized by comprising a preheating furnace (1) and an ignition furnace (2), wherein a gas heat exchanger (3) is arranged on the preheating furnace (1), a gas inlet pipe (31) and a gas outlet pipe (32) are arranged on the gas heat exchanger (3), the gas outlet pipe (32) is connected to a burner of the ignition furnace (2), on-off valves are respectively arranged on the gas inlet pipe (31) and the gas outlet pipe (32), heat exchangers (6) are respectively arranged on two sides of a sintering trolley (5) of the ignition furnace (2), one side of each heat exchanger (6) facing the sintering trolley (5) is detachably connected with a first heat insulation layer (7), an air inlet pipe (61) and an air outlet pipe (62) are arranged on each heat exchanger (6), a branch of the gas inlet pipe (31) is connected to the air inlet pipe (61), and the air outlet pipe (62) is connected to the burner of the ignition furnace (2), the air inlet pipe (61) and the air outlet pipe (62) are provided with on-off valves.
2. Sintering system according to claim 1, characterised in that the side of the heat exchanger (6) facing away from the sintering pallet (5) is provided with a second heat insulating layer (8).
3. Sintering system according to claim 2, characterised in that the thermal insulation layer one (7) is removed from the side of the heat exchanger (6) facing the sintering pallet (5) and then attached to the side of the heat exchanger (6) facing away from the sintering pallet (5) to form the thermal insulation layer two (8) when the gas is preheated by means of the heat exchanger (6).
4. The sintering system according to any one of claims 1 to 3, characterized in that a combustion-supporting gas heat exchanger (4) is further arranged on the preheating furnace (1), a combustion-supporting gas inlet pipe (41) and a combustion-supporting gas outlet pipe (42) are arranged on the combustion-supporting gas heat exchanger (4), and the combustion-supporting gas outlet pipe (42) is connected to a burner of the ignition furnace (2).
5. Sintering system according to claim 4, characterized in that the preheating furnace (1) is provided with a furnace (11), a preheating combustion gas pipe delivering gas to a preheating burner on the furnace (11), the gas being combusted in the furnace (11) to produce flue gas for preheating.
6. Sintering system according to claim 5, characterized in that the combustion-supporting gas heat exchanger (4) and the gas heat exchanger (3) are arranged in series in sequence along the flow direction of the flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122479568.4U CN215864638U (en) | 2021-10-14 | 2021-10-14 | Sintering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122479568.4U CN215864638U (en) | 2021-10-14 | 2021-10-14 | Sintering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215864638U true CN215864638U (en) | 2022-02-18 |
Family
ID=80260005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122479568.4U Active CN215864638U (en) | 2021-10-14 | 2021-10-14 | Sintering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215864638U (en) |
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2021
- 2021-10-14 CN CN202122479568.4U patent/CN215864638U/en active Active
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