Movable pulverized coal recovery injection tank
By designing a mobile coal powder recycling spray tank, the problems of blockage of spray branch pipelines and pollution of coal powder when spraying coal powder in blast furnace are solved, and the recycling and reverse transportation of coal powder is realized, and carbon emissions and consumption are reduced. Improved the working environment.
Patent Information
- Application Number
- CN202421436340.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-23
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-23
AI Technical Summary
When the existing blast furnace is sprayed with coal powder, the spray branch pipeline is prone to blockage. When dealing with the blockage, some coal powder is required to discharge to the atmosphere, pollute the environment and waste resources.
A mobile coal powder recycling spray tank is designed, including a tank body, with coal conveying valves and pressure charging valves on both sides of the tank body, dust removal valves, filters and flanges at the top of the tank body, and a bottom of the tank body has Silting holes and blind plates. The upper and lower ends of the tank body have trunnions connected to the hand-push trolley, and the hand-push trolley has support arm plates and support arc plates. When the coal spraying pipeline is blocked, the coal powder is discharged into the tank, and after treatment, it is transported backward to the coal spraying pipeline to achieve the recycling and zero emission of coal powder.
The recycling and reverse transportation of coal powder is realized, avoiding the external emission of coal powder when dealing with blockage, reducing carbon emissions and consumption, and improving the working environment.
Smart Images
Figure CN222434507U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blast furnaces in steel plants, namely a mobile coal powder recovery and injection tank. Background Art
[0002] In the prior art, when pulverized coal is injected into a blast furnace, the injection branch pipeline will be blocked. When the pipeline is blocked, part of the pulverized coal needs to be discharged into the atmosphere, which pollutes the air and environment, wastes resources and increases costs. Coal discharge valves are provided at the beginning and end of the coal injection pipeline. When blockage occurs, the coal injection valve is closed to stop injection, the purge air valve is opened to deliver compressed air into the pipeline, and the coal discharge valve is opened to discharge the blocked pulverized coal. After all is completed, the injection is resumed. When the pipeline is blocked, part of the pulverized coal needs to be discharged into the atmosphere, that is, all the pulverized coal blocked in the pipeline is discharged into the atmosphere, polluting the environment. Utility Model Content
[0003] The utility model aims to provide a mobile coal powder recovery and injection tank with reasonable structure, convenient use, no coal powder discharge when blocked and can be reused, thus reducing carbon emission and consumption.
[0004] The technical solution of the utility model is: a mobile coal powder recovery and injection tank, which is characterized in that it includes a tank body, with coal conveying valves and pressure charging valves on both sides of the tank body, a dust removal port valve, a filter and a flange connected in sequence on the top of the tank body, and a silt removal hole and a blind plate on the bottom of the tank body; the upper and lower ends of the tank body are provided with ear shafts connected to a hand push trolley, and the hand push trolley is provided with a support arm plate overlapped with the ear shaft and a supporting arc plate on the handle of the hand push trolley.
[0005] The advantages of the utility model are as follows: 1. A coal conveying valve and a pressure charging valve are arranged on the tank body. When the coal injection pipeline is blocked, the coal powder is discharged into the tank. After the treatment, the coal powder in the tank is reversely transported to the coal injection pipeline, so as to achieve the purpose of zero emission and cost reduction of coal powder recovery and reverse transportation. 2. The tank body is used in conjunction with a hand-pushing trolley, which can achieve rapid movement and installation and disassembly. 3. The structure is reasonable and easy to use. Zero emission of coal powder is achieved in daily use, which reduces the workload of cleaning the discharged coal powder and greatly improves the working environment.
[0006] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a structural diagram of the utility model.
[0008] Figure 2 It is a schematic diagram of the combined structure of the utility model and a hand-pushing trolley.
[0009] Figure 3 It is a schematic diagram of coal powder recovery of the utility model.
[0010] Figure 4 It is a schematic diagram of directional coal powder conveying of the utility model. DETAILED DESCRIPTION
[0011] See also Figure 1 -4, the names of the parts are as follows: tank body 1, dust removal valve 2, filter 3, coal delivery valve 4, pressure charging valve 5, ear shaft 6, blind plate 7, support arm plate 8, hand push trolley handle 9, supporting arc plate 10, hand push trolley 11, coal injection pipeline 12, connect coal injection gun 13.
[0012] See also Figure 1 , 2 The mobile coal powder recovery and injection tank includes a tank body 1, with coal delivery valves 4 and pressure charging valves 5 on both sides of the tank body 1, dust removal valves 2, filters 3 and flanges connected in sequence on the top of the tank body 1, and silt removal holes and blind plates 7 at the bottom of the tank body 1; the upper and lower ends of the tank body 1 are provided with ear shafts 6 connected to the trolley, and the trolley is provided with support arm plates 8 overlapped with the ear shafts 6 and supporting arc plates 10 on the trolley handle 9. After the tank body 1 has been used for a period of time, coal powder will be hardened in the tank body 1, which can be handled manually by removing the blind plates 7.
[0013] See also Figure 3 When recovering coal powder, the tank 1 is placed horizontally, the coal delivery valve 4 is connected to the coal discharge valve on the injection pipeline with a hose, the pressure valve 5 is in the closed state (the black valve represents the closed state, and the white valve represents the open state), the dust removal valve 2 is opened, and the coal discharge valve on the coal injection pipeline is opened to transport the coal powder into the tank 1. At this time, the excess gas is discharged to the outside of the tank 1 through the filter 3, and the coal powder remains in the tank 1. The volume of the domestic blast furnace injection branch pipeline is mostly 0.06m 3 Within, the effective volume of tank 1 is 0.07m 3 , which can meet the use requirements of most blast furnaces. If the volume exceeds the limit, the coal powder in the tank body 1 needs to be sprayed and then used again.
[0014] See also Figure 4 When conveying pulverized coal in reverse, close the dust removal valve 2 after dealing with the pipeline blockage, stand up the tank body 1, connect the charging valve 5 to the compressed air with a hose, and then open the charging valve 5 to pressurize the tank body 1. At this time, as the pressure in the tank body 1 increases and is higher than the pressure in the injection pipeline, the pulverized coal will be mixed with the compressed air and conveyed in reverse to the pipeline with compressed air as the power and sprayed into the blast furnace through the coal gun.
[0015] The above description is only a specific implementation of the present utility model, and various examples do not constitute a limitation on the essential content of the present utility model.
Claims
1. Mobile coal powder recovery injection tank, characterized by The invention comprises a tank body (1), wherein both sides of the tank body (1) are provided with a coal conveying valve (4) and a pressure charging valve (5); the top of the tank body (1) is provided with a dust removal valve (2), a filter (3) and a flange connected in sequence; the bottom of the tank body (1) is provided with a silt removal hole and a blind plate (7); the upper and lower ends of the tank body (1) are provided with an ear shaft (6) connected to a trolley; the trolley is provided with a supporting arm plate (8) overlapped with the ear shaft (6) and a supporting arc plate (10) on a handle (9) of the trolley.