Ash removal device for tail gas exhaust pipe of sintering machine for ironmaking
By designing a tail gas exhaust pipe cleaning device in ironmaking production, and using a sealed ash hopper to promptly discharge accumulated ash, the problem of decreased dust removal efficiency and increased power consumption caused by ash accumulation is solved, achieving efficient and safe ash removal, and reducing manual labor intensity and energy consumption.
Patent Information
- Application Number
- CN202520115985.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In existing ironmaking production, the exhaust pipes of sintering machines are heavily dusty, which leads to a decrease in dust removal and ventilation efficiency, a reduction in waste heat return air cooling volume, an increase in power consumption costs, and the difficulty and inefficiency of manual cleaning, affecting production continuity and environmental protection.
Design a dust removal device for the exhaust pipe of a sintering machine for ironmaking. By setting a dust discharge pipe at the bottom of the pipe and connecting it to the sealed dust hopper of the annular cooler, the accumulated dust can be discharged in time using the sealed dust hopper, avoiding manual cleaning, ensuring dust removal and ventilation efficiency and waste heat return air cooling volume. A slide gate valve is used to control the dust discharge and prevent dust from being generated.
It achieves dust removal without stopping the machine, improves production efficiency, reduces labor costs, ensures environmentally friendly dust removal, reduces the use of cooling fans, reduces energy consumption, and maintains production continuity.
Smart Images
Figure CN223755813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of ironmaking, in particular to a sintering machine tail gas exhaust pipe dust removal device for ironmaking. BACKGROUND
[0002] In the existing ironmaking production process, a sintering device needs to be used for sintering treatment. Through the sintering process, various fine particle iron-containing raw materials are mixed with fluxes and fuels, uniformly mixed and granulated, then laid flat on the sintering machine to ignite and sinter, so that the fusible substances in the mixed material soften and melt, and the molten substances wet and contain the un-melted large particle ores. In the cooling process, the sintered material gradually bonds into blocks, and finally the sintered ore in block form is obtained for use in subsequent sections.
[0003] This process can improve the physical and chemical properties of iron ore raw materials, such as improving porosity, particle size uniformity, mechanical strength, reducibility, reducing low-temperature reduction pulverization rate, and improving high-temperature reduction softening performance, to improve smelting effect and ensure high yield, high quality, and low consumption of blast furnaces.
[0004] The tail gas of the first sintering machine is discharged to the next section through the dust removal pipe, the four waste heat return air pipes of the circular cooler, and the pipe routes all have flat sections. In the production process, the pipe routes in the flat sections are seriously accumulated with dust, which needs to be cleaned regularly by operators to ensure the smoothness of the pipe routes. At the same time, with the normal progress of sintering production, the tail shuttle groove of the sintering machine and the dust removal air draft efficiency are greatly affected by the thickness of the dust accumulated in the pipe. If the dust accumulation is too thick, it will also affect the dust removal effect of the dust removal air draft, affect the dust content in the production environment, and cause the dust content in the environment to be out of standard.
[0005] At the same time, the dust accumulated in the above-mentioned pipe will also affect the cooling air volume of the waste heat return air of the circular cooler. The dust generated during production will also cause the waste heat return air to be blocked and the cooling air volume to decrease. In order to achieve the expected cooling effect of the sintered ore in the circular cooler, it is necessary to increase the opening degree of the damper of the circular cooler or increase the number of started cooling fans, which increases the power consumption cost and production, and affects the implementation effect of energy saving and consumption reduction of the waste heat return air of the first sintering circular cooler.
[0006] The existing pipe cleaning operation is completely dependent on manual operation, which is difficult to operate: DN1000mm pipes need to be opened one by one manually and checked one by one. When it is detected that the thickness of the dust accumulated in the flat section pipe reaches 600mm, it needs to be cleaned. During maintenance, a large amount of manpower is needed to climb into the pipe and clean the accumulated dust in the limited space of the pipe, which is low in cleaning efficiency and high in labor intensity. With the progress of production, the dust thickness increases rapidly, which increases the frequency of manual cleaning and requires repeated shutdown for cleaning, affecting the normal progress of production.
[0007] The information disclosed in the background section is only for the purpose of increasing the understanding of the general background of the present application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to those of ordinary skill in the art. Summary of the application
[0008] The present application provides a sintering machine tail gas exhaust pipe dust removal device for ironmaking, which can improve production efficiency without manual shutdown for dust removal, avoid shutdown, and ensure the dust removal efficiency of the machine tail shuttle chute and the cooling air volume of the waste heat return air of the circular cooler.
[0009] The present application provides a sintering machine tail gas exhaust pipe dust removal device for ironmaking, which can improve production efficiency without manual shutdown for dust removal, avoid shutdown, and ensure the dust removal efficiency of the machine tail shuttle chute and the cooling air volume of the waste heat return air of the circular cooler.
[0010] One end of the dust collection air pipe is connected to the sintering machine tail gas exhaust pipe, and the other end is connected to the air inlet of the machine tail bag-type dust collector; the dust collection air pipe comprises a flat section pipe; the ash discharge hopper is arranged on the bottom surface of the flat section pipe and is connected to the flat section pipe;
[0011] The ash discharge hopper is connected to the ash discharge pipe.
[0012] The ash discharge pipe is provided with an ash discharge valve.
[0013] Preferably, it comprises a circular cooler sealing ash hopper.
[0014] The extension end of the ash discharge pipe is connected to the circular cooler sealing ash hopper.
[0015] Preferably, the ash discharge pipe comprises a tapered pipe section; one end of the tapered pipe section is connected to the flat section pipe, and the other end is connected to the sintering machine tail gas exhaust pipe.
[0016] Preferably, the top surface of the ash discharge hopper has a cross-sectional area of 60-70% of the cross-sectional area of the bottom surface of the flat section pipe.
[0017] Preferably, it comprises an operation platform; the operation platform is arranged below the flat section pipe.
[0018] Preferably, it comprises an operation platform; the operation platform is arranged close to the ash discharge valve.
[0019] Preferably, a sealing ash discharge pipe is arranged on the ash discharge port of the circular cooler trolley; a sealing gasket is arranged on the outer wall of the sealing ash discharge pipe, and the circular cooler sealing ash hopper is sleeved on the sealing ash discharge pipe and is sealingly connected to the sealing ash discharge pipe.
[0020] Preferably, the ash discharge valve is a gate valve.
[0021] The present application can produce the following beneficial effects:
[0022] 1) The sintering machine tail gas exhaust pipe ash removal device for ironmaking provided in the application can timely remove accumulated ash through the ash discharge pipe arranged at the bottom of the horizontal section pipeline and the communication of the ash discharge pipe with the sealing ash hopper pipeline of the circular cooler, without manual ash removal, which can effectively avoid continuous formation of accumulated ash in the horizontal section pipeline, thereby avoiding shutdown and manual cleaning, while ensuring the dust removal and air extraction efficiency of the machine tail shuttle groove and the cooling air volume of the circular cooler waste heat return air, ensuring the safety of workers, reducing labor costs, and reducing the use amount of the air cooler and energy consumption.
[0023] 2) The sintering machine tail gas exhaust pipe ash removal device for ironmaking provided in the application can timely remove accumulated ash, and the sealing ash hopper used for discharge can prevent the discharged accumulated ash from overflowing to form dust, thereby meeting the dust content requirement of environmental protection. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 The sintering machine tail gas exhaust pipe ash removal device for ironmaking provided in the application is shown in the schematic view.
[0025] LEGEND:
[0026] Sintering trolley tail wheel 1, sintering machine tail gas exhaust pipe 2, circular cooler trolley 3, circular cooler sealing ash hopper 4, dust collection air pipe 5, horizontal section pipeline 51, ash discharge hopper 52, ash discharge valve 541, ash discharge pipe 54, operation platform 53. DETAILED DESCRIPTION
[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0029] The technical means not described in detail in the present application and not used to solve the technical problems of the present application are set according to common knowledge in the art, and various common knowledge setting modes can be implemented.
[0030] Reference Figure 1The sintering machine tail gas exhaust pipe dust removal device for iron making provided by the application comprises: a sintering trolley tail wheel 1, a sintering machine tail gas exhaust pipe 2, a circular cooler trolley 3, a circular cooler sealing ash hopper 4, a dust collection air pipe 5, a flat section pipe 51, an ash discharge hopper 52, an ash discharge valve 541, an ash discharge pipe 54, and an operation platform 53.
[0031] The sintering trolley tail wheel 1 is arranged on the upper side wall of the sintering machine tail gas exhaust pipe 2; the sintering machine tail gas exhaust pipe 2 is arranged close to the circular cooler trolley 3; the circular cooler sealing ash hopper 4 is connected in communication with the discharge return port of the circular cooler trolley 3; one end of the dust collection air pipe 5 is connected in communication with the upper side wall of the sintering machine tail gas exhaust pipe 2, and the other end is connected in communication with the air inlet pipe line of the machine tail bag-type dust collector; the dust collection air pipe 5 comprises: the flat section pipe 51; the flat section pipe 51 is the area where dust is easily formed; the ash discharge hopper 52 is arranged on the bottom surface of the flat section pipe 51; the top surface cross-sectional area of the ash discharge hopper 52 is 60-70% of the bottom surface cross-sectional area of the flat section pipe 51, so that the dust accumulated in the flat section pipe 51 can be timely and more comprehensively discharged, and dust formation is avoided.
[0032] The ash discharge hopper 52 and the ash discharge pipe 54 are connected in communication, the ash discharge valve 541 is arranged on the ash discharge pipe 54, and the other end of the ash discharge pipe 54 is connected in communication with the top of the circular cooler sealing ash hopper 4, so that the effect of discharging dust outward by the circular cooler sealing ash hopper 4 is achieved.
[0033] In order to facilitate maintenance, in an embodiment, the operation platform 53 is arranged below the flat section pipe 51.
[0034] In order to facilitate dust discharge control, in an embodiment, the operation platform 53 is arranged close to the ash discharge valve 541, and the operator can regularly open the ash discharge valve 541 to discharge dust according to the dust discharge condition, so that the discharged dust can be discharged together with the dust discharged by the circular cooler sealing ash hopper 4, and the accumulated dust can be collected and recycled.
[0035] In an embodiment, a sealing ash discharge pipe is arranged on the dust discharge port of the circular cooler trolley 3; a sealing gasket is arranged on the outer wall of the sealing ash discharge pipe, the circular cooler sealing ash hopper 4 is sleeved on the sealing ash discharge pipe, and the circular cooler sealing ash hopper 4 is sealingly connected with the sealing ash discharge pipe.
[0036] In an embodiment, the ash discharge valve 541 is a plug valve. The plug valve can be used to timely discharge the accumulated dust as needed.
[0037] In an embodiment, a sealing sleeve is sleeved on the extended end of the ash discharge pipe 54; the extended end of the ash discharge pipe 54 is sealingly connected with the circular cooler sealing ash hopper 4. Dust raising is prevented.
[0038] In an embodiment, the ash discharge pipe 54 comprises: a tapered pipe section 511; one end of the tapered pipe section 511 is connected in communication with the flat section pipe 51, and the other end is connected in communication with the sintering machine tail gas exhaust pipe 2; so as to facilitate directional discharge of flue gas.
[0039] The following devices are all commercially available products, and the specific setting mode is set according to the conventional mode in the prior art, which is not repeated here. Specifically:
[0040] The sintering trolley tail wheel 1 is a conventional component of the existing sintering trolley, and is set according to the conventional mode in the prior art, which is not repeated here.
[0041] The ring cooling machine trolley 3 is purchased from Hebei Huatong Heavy Industry Machinery Manufacturing Co., Ltd., and is set according to the conventional mode in the prior art, which is not repeated here.
[0042] The above device is put into use in the production process of Xianfu Steel, and the following effects are obtained:
[0043] 1. After observing during the later shutdown maintenance, there is no obvious dust accumulation in each area; manual dust cleaning is not required, reducing labor cost;
[0044] 2. Improve the environmental dust removal effect of the exhaust pipe of the first-stage sintering machine.
[0045] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model shall be included in the protection scope of the utility model.
Claims
1. A sintering machine off-gas exhaust pipe dust cleaning device for iron making, characterized by, The utility model relates to a sintering machine tail gas dust collecting device, including: a dust collecting air pipe (5), an ash discharging hopper (52), an ash discharging valve (541) and an ash discharging pipe (54); one end of the dust collecting air pipe (5) is connected with a sintering machine tail gas exhaust pipe (2), and the other end is connected with an air inlet of a machine tail bag type dust collector; the dust collecting air pipe (5) comprises a flat section pipe (51); the ash discharging hopper (52) is arranged on the bottom surface of the flat section pipe (51) and is connected with the flat section pipe (51); the ash discharging hopper (52) is connected with the ash discharging pipe (54); the ash discharging valve (541) is arranged on the ash discharging pipe (54).
2. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 1, characterized by The utility model relates to a sintering machine tail gas dust collecting device, including: a ring cooling machine sealing ash hopper (4); an extension end of the ash discharging pipe (54) is connected with the ring cooling machine sealing ash hopper (4).
3. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 1, characterized by, The ash discharging pipe (54) comprises a tapered pipe section (511); one end of the tapered pipe section (511) is connected with the flat section pipe (51), and the other end is connected with the sintering machine tail gas exhaust pipe (2).
4. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 1, characterized by, The top surface of the ash discharging hopper (52) has a cross section area of 60-70% of the cross section area of the bottom surface of the flat section pipe (51).
5. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 1, characterized by The utility model relates to a sintering machine tail gas dust collecting device, including: an operation platform (53); the operation platform (53) is arranged below the flat section pipe (51).
6. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 1, characterized by The utility model relates to a sintering machine tail gas dust collecting device, including: an operation platform (53); the operation platform (53) is arranged close to the ash discharging valve (541).
7. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 2, characterized by, A sealing ash discharging pipe is arranged on the ash discharging port of the ring cooling machine trolley (3); a sealing gasket is arranged on the outer wall of the sealing ash discharging pipe; the ring cooling machine sealing ash hopper (4) is sleeved on the sealing ash discharging pipe and is connected with the sealing ash discharging pipe in a sealing mode.
8. The sintering machine off-gas exhaust pipe deashing device for iron making according to claim 2, characterized by, The ash discharging valve (541) is a plug valve.