Ash unloading equipment of blast furnace gravity dust removal suction and exhaust vehicle
By filling the blast furnace ash hopper with inert gas to separate coal gas and dust, the problem of coal gas leakage during ash discharge from the blast furnace gravity dust collector was solved, achieving safe dust transportation and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-04-10
AI Technical Summary
Existing blast furnace gravity dust collectors are prone to gas leakage during ash discharge, leading to environmental pollution.
A blast furnace gravity dust removal suction and discharge vehicle ash unloading device was designed. By filling the blast furnace ash hopper with inert gas to separate the coal gas from the dust, the dust is sent into the suction and discharge vehicle using the gas filling component and the ash unloading pipeline to avoid coal gas leakage.
It effectively prevents gas leakage during ash unloading, eliminates environmental pollution, and ensures safe ash transportation.
Smart Images
Figure CN224105061U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a blast furnace dust remover ash removal technical field especially relates to a blast furnace gravity dust removal suction and discharge truck ash removal equipment. BACKGROUND
[0002] At present, the blast furnace of domestic steel manufacturing enterprise adopts gravity dust removal, and the flue gas in the blast furnace enters the gravity dust remover through the dust removal pipe. Due to the action of gravity, most of the dust will deposit at the bottom of the dust remover. The gravity dust removal dust is the dust collected by the gravity dust remover in the blast furnace ironmaking process. The particle size is uneven, the specific gravity is relatively large, and it is difficult to be pneumatically conveyed. The mainstream process in the industry adopts the suction and discharge truck to be transported outside regularly. In the ash removal process, the gravity dust remover not only releases dust, but also discharges coal gas. The coal gas is easy to leak, thereby polluting the environment. SUMMARY
[0003] Therefore, the utility model provides a blast furnace gravity dust removal suction and discharge truck ash removal equipment to solve the technical problem that the existing blast furnace gravity dust remover is usually mixed with coal gas during ash removal, thereby being easy to pollute the environment due to coal gas leakage.
[0004] Based on the above purpose, the utility model provides a blast furnace gravity dust removal suction and discharge truck ash removal equipment, which comprises:
[0005] A blast furnace ash tank with a feeding end and a discharging end, the feeding end of the blast furnace ash tank is communicated with the ash outlet of the blast furnace dust remover ash bin to form a discharging pipeline for sending the dust and coal gas in the blast furnace dust remover into the blast furnace ash tank, and the discharging end of the blast furnace ash tank is communicated with the suction and discharge truck joint to form an ash removal pipeline for sending the dust in the blast furnace ash tank into the suction and discharge truck.
[0006] An aeration assembly for filling inert gas into the blast furnace ash tank, the aeration assembly has at least one gas input pipeline and at least one gas discharge pipeline, one end of the gas input pipeline is connected with a gas source, the other end of the gas input pipeline is connected with the blast furnace ash tank, one end of the gas discharge pipeline is connected with the blast furnace ash tank, and in use, the gas source fills inert gas into the blast furnace ash tank through the gas input pipeline to discharge the coal gas in the blast furnace ash tank through the gas discharge pipeline.
[0007] As a preferred technical scheme of the utility model, the ash removal equipment further comprises: an electric ash discharge valve one arranged on the discharging pipeline and used for controlling the opening and closing of the discharging pipeline.
[0008] As a preferred technical scheme of the utility model, the discharging pipeline is further provided with an electric ash discharge valve two.
[0009] As a preferred technical scheme of the utility model, the gas input pipeline comprises: a gas filling pipe connected with the blast furnace ash tank at one end, and the other end of the gas filling pipe is provided with a spring pressure gauge, a pressure reducing valve, a check valve and a ball valve one.
[0010] As a preferred technical scheme of the utility model, the gas discharge pipeline comprises: a diffusion pipe one arranged above the blast furnace ash tank, wherein the upper end interface of the diffusion pipe one is connected with the lower end interface of an equal-diameter tee, the upper end interface of the equal-diameter tee is connected with an electric explosion-proof ball valve, a safety valve is arranged on the side interface of the equal-diameter tee, the side interface of the equal-diameter tee is connected with the upper end interface of the electric explosion-proof ball valve, the upper end interface of the electric explosion-proof ball valve is further provided with a diffusion pipe two, and the diffusion pipe two is connected with an equalizing recovery pipe.
[0011] As a preferred technical scheme of the utility model, the ash discharging pipeline comprises: an electric ash discharging valve three, an ash discharging pipe and a metal hose which are sequentially connected on the discharging end of the blast furnace ash tank.
[0012] As a preferred technical scheme of the utility model, one end of the ash discharging pipe is provided with a small hole, and the small hole is provided with a ball valve two.
[0013] As a preferred technical scheme of the utility model, the gas source comprises:
[0014] A high-pressure gas cylinder for storing inert gas;
[0015] A gas pressure reducer connected with the high-pressure gas cylinder at an input end, and an output end of the gas pressure reducer is connected with the ball valve one.
[0016] As a preferred technical scheme of the utility model, the inert gas is nitrogen.
[0017] As a preferred technical scheme of the utility model, the gas filling pipe is connected at the lower end of the blast furnace ash tank, and the diffusion pipe one is connected at the upper end of the blast furnace ash tank.
[0018] The utility model discloses a blast furnace gravity dust collector ash tank, which comprises a blast furnace ash tank, a gas filling assembly, a gas discharge assembly and an ash discharging assembly. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only belong to the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0020] Figure 1 It is a front view structural schematic diagram of the present application.
[0021] Figure 2 It is a side view structural schematic diagram of the present application.
[0022] In the figure, the marks are: 1, blast furnace ash tank; 2, equal-diameter tee; 3, electric explosion-proof ball valve; 4, diffusion pipe one; 5, safety valve; 6, diffusion pipe two; 7, electric ash valve one; 8, electric ash valve two; 9, spring pressure gauge; 10, pressure reducing valve; 11, check valve; 12, inflation pipe; 13, ball valve one; 14, electric ash valve three; 15, ash discharge pipe; 16, ball valve two; 17, metal hose. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further describe the present application in detail with specific embodiments.
[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] As Figure 1As shown, a blast furnace gravity dust collector suction and discharge car ash unloading device includes: a blast furnace ash hopper 1 with a feeding end and a discharging end, the feeding end of the blast furnace ash hopper 1 being connected to the ash outlet of the ash silo of the blast furnace dust collector to form a feeding pipeline for sending dust and gas from the blast furnace dust collector into the blast furnace ash hopper 1, and the discharging end of the blast furnace ash hopper 1 being connected to the suction and discharge car connector to form an ash unloading pipeline for sending dust from the blast furnace ash hopper 1 into the suction and discharge car; and an inflation assembly for filling the blast furnace ash hopper 1 with inert gas, the inflation assembly having at least one gas input pipeline and at least one gas discharge pipeline, one end of the gas input pipeline being connected to a gas source, the other end of the gas input pipeline being connected to the blast furnace ash hopper 1, and one end of the gas discharge pipeline being connected to the blast furnace ash hopper 1.
[0026] The above technical solution ensures the separation of gas and dust in blast furnace ash hopper 1, guaranteeing that only dust is transported into the suction and discharge car, preventing gas leakage and environmental pollution during ash unloading. In use, first connect the ash outlet of the blast furnace dust collector's ash hopper to the feed end of blast furnace ash hopper 1. Then connect the gas input and gas discharge pipelines of the aeration assembly to blast furnace ash hopper 1 respectively. Open the discharge pipeline to send the dust and gas from the blast furnace dust collector into blast furnace ash hopper 1. However, do not discharge all the dust from the gravity dust collector into blast furnace ash hopper 1 (because the gravity dust collector contains gas; once all the dust is discharged, the gas will directly enter blast furnace ash hopper 1). Leave a portion of the dust in the gravity dust collector's ash hopper unloaded. The dust is separated to form a material seal, which can reduce the amount of gas entering the blast furnace ash hopper 1 to a certain extent. When the dust in the blast furnace ash hopper 1 reaches the required amount, the blast furnace ash hopper 1 material level instrument sends a full signal and closes the feeding pipeline. Then, the gas source fills the blast furnace ash hopper 1 with inert gas through the gas input pipeline so that the gas in the blast furnace ash hopper 1 is discharged through the gas discharge pipeline. At this time, the blast furnace ash hopper 1 only contains dust and does not contain gas. The suction and discharge car is parked at the designated parking position around the gravity dust collector. The car is dismounted and the discharge end of the blast furnace ash hopper 1 is connected to the suction and discharge car connector through the ash discharge pipeline. The ash is discharged from the ash discharge pipeline into the suction and discharge car. When the dust in the blast furnace ash hopper 1 is discharged, the ash discharge pipeline is disconnected from the suction and discharge car to complete the ash discharge.
[0027] As a possible scenario, there may be residual dust at the bottom of blast furnace ash hopper 1 that has not been completely removed. In this case, the gas discharge pipeline of the gas charging component can be closed, and only the gas input pipeline and the ash discharge pipeline can be opened. The gas source can charge high-pressure gas into blast furnace ash hopper 1 through the gas input pipeline, thereby flushing the dust that is blocked or residual at the bottom of blast furnace ash hopper 1 into the suction and discharge car through the ash discharge pipeline, ensuring that all the dust in blast furnace ash hopper 1 can be completely removed.
[0028] like Figure 1 As shown, in this embodiment, the ash discharge device further includes: an electric ash discharge valve 7 installed on the discharge pipeline for controlling its opening and closing; and an electric ash discharge valve 8 installed on the discharge pipeline.
[0029] The above technical scheme can control the opening and closing of the blanking pipeline, and the installation of the two electric ash discharge valves can facilitate replacement during maintenance.
[0030] As shown in the figure, Figure 1 In the embodiment, the gas input pipeline comprises: a gas filling pipe 12 connected to the blast furnace ash tank 1 at one end, and a spring pressure gauge 9, a pressure reducing valve 10, a check valve 11 and a ball valve I 13 are installed at the other end of the gas filling pipe 12.
[0031] The above technical scheme can ensure that inert gas is filled into the blast furnace ash tank 1. In use, inert gas is filled from the left side of the blast furnace ash tank 1, the ball valve I 13 is opened, nitrogen gas passes through the pressure reducing valve 10 and the check valve 11 into the gas filling pipe 12, and then enters the blast furnace ash tank 1 through the gas filling pipe 12.
[0032] As shown in the figure, Figure 1 In the embodiment, the gas discharge pipeline comprises: a diffuser pipe I 4 arranged above the blast furnace ash tank 1, the upper end interface of the diffuser pipe I 4 is connected to the lower end interface of the equal-diameter tee 2, the upper end interface of the equal-diameter tee 2 is connected to the electric explosion-proof ball valve 3, the side interface of the equal-diameter tee 2 is provided with a safety valve 5, the side interface of the equal-diameter tee 2 is connected to the upper end interface of the electric explosion-proof ball valve 3, and the upper end interface of the electric explosion-proof ball valve 3 is further provided with a diffuser pipe II 6 connected to the equal-pressure recovery pipe.
[0033] The above technical scheme can discharge the coal gas in the blast furnace ash tank 1 by inert gas. In use, after the inert gas enters the blast furnace ash tank 1, the inert gas blows the coal gas in the blast furnace ash tank 1 into the diffuser pipe I 4, the electric explosion-proof ball valve 3 is opened, the coal gas enters the diffuser pipe II 6, and finally the coal gas is discharged into the equal-pressure recovery pipe, so as to ensure that only dust is contained in the blast furnace ash tank 1, and no coal gas is contained.
[0034] Further, in the embodiment, the gas source comprises: a high-pressure gas cylinder for storing inert gas; a gas pressure reducer connected to the high-pressure gas cylinder at the input end, and the output end of the gas pressure reducer is connected to the ball valve I 13; preferably, the inert gas is nitrogen, the gas filling pipe 12 is connected to the lower end of the blast furnace ash tank 1, and the diffuser pipe I 4 is connected to the upper end of the blast furnace ash tank 1.
[0035] The above technical scheme can conveniently deliver nitrogen gas to the gas input pipeline of the gas filling assembly. In use, the gas pressure reducer is connected to the ball valve I 13, the gas pressure reducer and the ball valve I 13 are opened, and nitrogen gas can enter the gas filling pipe 12.
[0036] As shown in the figure, Figure 1 In the embodiment, the ash discharge pipeline comprises: an electric ash discharge valve III 14, an ash discharge pipe 15 and a metal hose 17 connected to the discharge end of the blast furnace ash tank 1 in sequence.
[0037] The above technical scheme can discharge the dust in the blast furnace ash tank 1 into the suction and discharge vehicle.
[0038] As shown in the embodiment, one end of the ash discharge pipe 15 is provided with a small hole, and the small hole is provided with a ball valve two 16. Figure 1
[0039] The above technical scheme can prevent clogging during ash discharge. When the ash discharge is blocked, the ball valve two 16 is opened to blow nitrogen into the ash discharge pipe 15 to prevent clogging.
[0040] Working principle: The gravity dust collector is used for depositing dust at the bottom of the gravity dust collector ash bin due to gravity. When it is necessary to discharge, the ash cannot be directly discharged into the suction and discharge vehicle due to the coal gas in the ash bin. When it is necessary to discharge ash, the electric ash discharge valve one 7 and the electric ash discharge valve two 8 are opened. Two electric ash discharge valves are installed to facilitate replacement during maintenance. The ash enters the blast furnace ash tank 1. At this time, all the ash in the ash bin cannot be discharged into the blast furnace ash tank 1 because the gravity dust collector has coal gas. When all the ash is discharged, the coal gas will directly enter the blast furnace ash tank 1. A part of the ash in the gravity dust collector ash bin can block the coal gas from directly entering the blast furnace ash tank 1.
[0041] Nitrogen is connected from the left side, the ball valve one 13 is opened, nitrogen passes through the pressure reducing valve 10 and the check valve 11 to enter the inflation pipe 12, and then enters the blast furnace ash tank 1. Nitrogen is used to blow the coal gas in the blast furnace ash tank 1 into the diffusion pipe one 4. The electric explosion-proof ball valve 3 is opened to enter the diffusion pipe two 6. Finally, the coal gas is discharged into the pressure equalization recovery pipe.
[0042] After the coal gas in the blast furnace ash tank 1 is discharged, the suction and discharge vehicle is parked at a specified parking position around the gravity dust collector. The metal hose 17 is connected to the suction and discharge vehicle. The electric ash discharge valve three 14 is opened. The ash enters the metal hose 17 from the ash discharge pipe 15 and is finally discharged into the suction and discharge vehicle. The metal hose 17 is disconnected from the suction and discharge vehicle, and the ash discharge is completed.
[0043] The ash discharge pipe 15 is provided with a small hole, and a ball valve two 16 is installed above the small hole. When the ash discharge is blocked, the ball valve two 16 is opened to blow nitrogen into the ash discharge pipe 15 to prevent clogging.
[0044] It should be noted that:
[0045] 1. The attached drawings only show the general direction and position of the pipes and valves. The actual installation can be adjusted according to the actual situation.
[0046] 2. All equipment interfaces are provided with matching flanges and connections, and sealing elements are provided by the manufacturer.
[0047] 3. The diffusion pipe only shows the general direction. The actual situation is adjusted on site. The blast furnace ash tank 1 and the diffusion pipe are connected to the pressure equalization coal gas recovery pipe.
[0048] 4. During operation, the gravity dust collector tank should keep a certain material seal, and the gravity dust collector and the blast furnace ash tank 1 must be isolated during each time of dust suction and discharge.
[0049] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary in nature and is not intended to imply that the scope of the present application, including the claims, is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.
[0050] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.
Claims
1. A gravity dust removal and suction truck ash discharging equipment for blast furnace, characterized in that, The application relates to a blast furnace dust discharging device. The blast furnace dust discharging device comprises a blast furnace dust tank (1) with a feeding end and a discharging end, wherein the feeding end of the blast furnace dust tank (1) is connected with a dust outlet of a blast furnace dust collector dust bin to form a dust discharging pipeline for sending dust and coal gas in the blast furnace dust collector into the blast furnace dust tank (1), and the discharging end of the blast furnace dust tank (1) is connected with a suction truck joint to form a dust discharging pipeline for sending dust in the blast furnace dust tank (1) into a suction truck. The blast furnace dust discharging device further comprises a gas charging assembly for charging inert gas into the blast furnace dust tank (1), wherein the gas charging assembly is provided with at least one gas input pipeline and at least one gas discharge pipeline, one end of the gas input pipeline is connected with a gas source, the other end of the gas input pipeline is connected with the blast furnace dust tank (1), and one end of the gas discharge pipeline is connected with the blast furnace dust tank (1); in use, the gas source charges inert gas into the blast furnace dust tank (1) through the gas input pipeline, so that the coal gas in the blast furnace dust tank (1) is discharged through the gas discharge pipeline.
2. The gravity dust removal and suction truck ash discharging apparatus of a blast furnace according to claim 1, characterized in that, The dust discharging device further comprises a first electric dust discharging valve (7) arranged on the dust discharging pipeline and used for controlling opening and closing of the dust discharging pipeline.
3. The gravity dust removal and suction truck ash discharging apparatus of a blast furnace according to claim 2, characterized in that, The dust discharging pipeline is further provided with a second electric dust discharging valve (8).
4. The gravity dust removal and suction truck ash discharging apparatus of the blast furnace according to claim 1, characterized in that, The gas input pipeline comprises a gas charging pipe (12) connected with the blast furnace dust tank (1) at one end, and the other end of the gas charging pipe (12) is provided with a spring pressure gauge (9), a pressure reducing valve (10), a check valve (11) and a first ball valve (13).
5. The gravity dust removal and suction truck ash discharging apparatus of the blast furnace according to claim 4, characterized in that, The gas discharge pipeline comprises a first diffusion pipe (4) arranged above the blast furnace dust tank (1), the upper end of the first diffusion pipe (4) is connected with the lower end of a equal-diameter tee joint (2), the upper end of the equal-diameter tee joint (2) is connected with a electric explosion-proof ball valve (3), a safety valve (5) is arranged on the side edge of the equal-diameter tee joint (2), the side edge of the equal-diameter tee joint (2) is connected with the upper end of the electric explosion-proof ball valve (3), the upper end of the electric explosion-proof ball valve (3) is further provided with a second diffusion pipe (6), and the second diffusion pipe (6) is connected with an equal-pressure recovery pipe.
6. The gravity dust removal and discharge truck ash unloading apparatus of the blast furnace according to claim 1, characterized by, The dust discharging pipeline comprises a third electric dust discharging valve (14), a dust discharging pipe (15) and a metal hose (17) which are sequentially connected with the discharging end of the blast furnace dust tank (1).
7. The gravity dust removal and suction truck ash discharging apparatus of the blast furnace according to claim 6, characterized in that, The dust discharging pipe (15) is provided with a small hole at one end, and the small hole is provided with a second ball valve (16).
8. The gravity dust removal and suction truck ash discharging equipment of a blast furnace according to claim 5, characterized in that, The gas source comprises: a high-pressure gas cylinder used for storing inert gas; a gas pressure reducer connected with the high-pressure gas cylinder at an input end, and connected with the first ball valve (13) at an output end.
9. The gravity dust removal and suction truck ash discharging apparatus of the blast furnace according to claim 8, characterized in that, The inert gas is nitrogen.
10. The gravity dust removal and suction truck ash discharging apparatus of the blast furnace according to claim 9, characterized in that, The gas charging pipe (12) is connected with the lower end of the blast furnace dust tank (1), and the first diffusion pipe (4) is connected with the upper end of the blast furnace dust tank (1).