Purification device for white coal drying tail gas
By using a plastic-burning plate dust collector, the plastic-burning plate with ultra-high molecular weight polyethylene and polytetrafluoroethylene coating is solved by using a plastic-burning plate with ultra-high molecular weight polyethylene and polytetrafluoroethylene coating, combined with steel brackets and explosion-proof valves, the cleaning ability of traditional bag dust collectors when handling white coal drying exhaust gas is solved. The problem of insufficient results has achieved efficient filtration and purification of exhaust dust, ensuring the compliance of exhaust emissions and the safety of equipment.
Patent Information
- Application Number
- CN202323643003.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-29
AI Technical Summary
When traditional bag dust collectors treat white coal with high moisture content, their cleaning ability is weak, resulting in poor dust purification effect, and dust is prone to sticking to the normal operation of the dust collector.
It adopts a plastic burning plate dust collector, and uses a plastic burning plate made of ultra-high molecular weight polyethylene and is coated with polytetrafluoroethylene on the surface, fixed with a steel bracket, and the inner wall is connected to the plate head, equipped with an explosion-proof valve and a rain canopy. Achieve efficient filtering of exhaust dust.
Effectively reduce the dust content of exhaust gas to 2mg/m³, ensure exhaust gas emissions meet standards, avoid dust adhesion problems, and improve purification effect and equipment safety.
Smart Images
Figure CN222266512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of white coal tail gas treatment, in particular to a purifying device for white coal drying tail gas. Background Art
[0002] During the mining and processing process, white coal must be washed before it can be sold on the market. For downstream customers of white coal, that is, factories using it, the high water content of white coal is not conducive to production and use, especially in the production of yellow phosphorus. The water in white coal is also an impurity, which increases the increase of side reactions in the reduction reaction of phosphate ore. At the same time, it will also cause corrosion to system equipment and pipelines. The water will also make the white coal powder stick to the core white coal and difficult to screen, resulting in an increase in the error of the metering ratio of the incoming charge, and it is also easy to cause the internal tower material of the electric furnace. Therefore, before the white coal enters the production process as a raw material, it must be dried. More than 95% of factories will choose to use coal gas or natural gas to dry the white coal. The tail gas after drying contains a large amount of white coal dust. If it is directly discharged, it will cause serious environmental pollution. At the same time, there may be a lot of unburned combustible gases in the tail gas, and there is also a risk of spontaneous combustion or explosion. In the past, traditional dust removal technology schools mostly used bag dust removal technology, but because the white coal powder after drying still contains a small amount of water, it is easy to stick to the bag, affecting the dust removal effect, and needs to be cleaned regularly. In summary, for the dust purification of white coal drying tail gas, traditional dust removal technology has many disadvantages. Summary of the invention
[0003] The technical problem to be solved by the utility model is that the bag-type dust collector has a weak cleaning ability for white coal dust tail gas with high water content.
[0004] In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a purification device for white coal drying exhaust gas, including a plastic-fired plate dust collector, the air inlet and induced draft duct of the plastic-fired plate dust collector is connected to the exhaust pipe, the air outlet end of the plastic-fired plate dust collector is connected to the induced draft fan and the exhaust gas discharge port, the plastic-fired plate in the plastic-fired plate dust collector is made of ultra-high molecular weight polyethylene, and the surface of the plastic-fired plate is coated with a polytetrafluoroethylene coating, and the inner wall of the plastic-fired plate dust collector and the head of the plastic-fired plate are bitingly connected.
[0005] Preferably, the plastic-sintered plate dust collector is fixed by a steel bracket, and a staircase is provided on one side of the box body of the plastic-sintered plate dust collector, the top of the staircase is connected to a guardrail of the flat plate on the top of the box body, and a rainproof shed is provided on the top of the guardrail.
[0006] Preferably, an explosion-proof valve is connected to the side wall of the box.
[0007] The utility model provides a purification device for tail gas from white coal drying. By utilizing a plastic-sintered plate dust collector in a white coal drying production line, the tail gas from drying is filtered, so that the dust content of the tail gas can be reduced to less than 2 mg / m³, effectively ensuring that the tail gas meets emission standards. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0009] Figure 1 It is a side view of the plastic sintered plate dust collector in the embodiment of the utility model.
[0010] Figure 2 It is the front view of the plastic sintered plate dust collector in the embodiment of the utility model.
[0011] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the utility model.
[0012] In the figure: 1. Steel support; 2. Discharger; 3. Screw conveyor; 4. Ash hopper; 5. Box body; 6. Explosion-proof valve; 7. Guardrail; 8. Rainproof awning; 9. Plastic burning board; 10. Inlet and outlet flanges; 11. Flower board; 12. Upper box body; 13. Stairs; 14. Top cover; 15. Air intake and exhaust ducts; 16. Plastic burning board dust collector; 17. Draft fan; 18. Exhaust outlet. DETAILED DESCRIPTION
[0013] like Figure 1-3 The utility model provides a purification device for tail gas from drying white coal, comprising a plastic-sintered plate dust collector 16, an air intake induced draft pipeline 15 of the plastic-sintered plate dust collector 16 connected to the tail gas pipeline, an air outlet end of the plastic-sintered plate dust collector 16 connected to an induced draft fan 17 and a tail gas discharge port 18, a plastic-sintered plate 9 in the plastic-sintered plate dust collector 16 adopts ultra-high molecular weight polyethylene, and a polytetrafluoroethylene coating is coated on the surface of the plastic-sintered plate 9, and the inner wall of the plastic-sintered plate dust collector 16 and the plate head of the plastic-sintered plate 9 are engaged and connected.
[0014] The plastic sintered plate dust collector 16 is installed through the steel bracket 1, and a box body 5 is arranged on the top of the plastic sintered plate dust collector 16. The plastic sintered plate 9 is installed in the box body 5. A flower plate 11 is arranged on the top of the box body 5, and an upper box body 12 is arranged on the top of the flower plate 11. A top cover 14 is arranged on the top of the upper box body 12; the side walls of the box body 5 and the upper box body 12 are respectively connected with inlet and outlet flanges 10, and the box body 5 is connected to the air intake and exhaust duct line 15 through the inlet and outlet flanges 10, and the upper box body 12 is connected to the induced draft fan 17 and the exhaust gas discharge port 18 through the inlet and outlet flanges 10.
[0015] A staircase 13 is installed on one side of the box body 5 to facilitate maintenance personnel to inspect the plastic-sintered plate dust collector 16; a guardrail 7 is installed on the edge of the top cover 14 of the plastic-sintered plate dust collector 16, and a rainproof shed 8 is arranged above the guardrail 7.
[0016] The inner wall of the box body 5 is evenly provided with grooves, so that the plastic-sintered plate 9 can be engaged with the grooves on the box body 5 and will not fall off after connection, thus avoiding the problem of adhesive failure and falling off caused by the bonding process on the surface of the board head.
[0017] The head sealing ring of the plastic sintered plate 9 is made of EPDM rubber, which meets the requirements of acid resistance, alkali resistance, temperature resistance and weather resistance. The surface of the plastic sintered plate 9 meets the infrared thermosetting penetration coating technology process, and the PTFE coating is effectively combined with the filter matrix to achieve a smooth surface, high filtration efficiency and strong air permeability.
[0018] The bottom of the box body 5 is connected to an ash collecting hopper 4, which is continuously arranged along the length direction of the box body 5. The bottoms of all ash collecting hoppers 4 are connected to the top of a screw conveyor 3, and the dust is uniformly discharged through a discharger 2 installed at the end of the screw conveyor 3.
[0019] like Figure 1-3 As shown, in order to facilitate the maintenance of the plastic sintered plate dust collector 16 and protect its top structure, the plastic sintered plate dust collector 16 is fixed by a steel bracket 1, and a staircase 13 is arranged on one side of the box body 5 of the plastic sintered plate dust collector 16, and the top of the staircase 13 is connected to the guardrail 7 of the top flat plate of the box body 5, and a rainproof canopy 8 is arranged on the top of the guardrail 7.
[0020] like Figure 1 To improve the safety of the device, an explosion-proof valve 6 is connected to the side wall of the box 5 .
Claims
1. A purification device for tail gas from white coal drying, comprising a plastic-sintered plate dust collector (16), an air inlet induced draft pipeline (15) of the plastic-sintered plate dust collector (16) connected to a tail gas pipeline, and an air outlet end of the plastic-sintered plate dust collector (16) connected to an induced draft fan (17) and a tail gas discharge port (18), characterized in that: The plastic sintered plate (9) in the plastic sintered plate dust collector (16) is made of ultra-high molecular weight polyethylene, and a polytetrafluoroethylene coating is coated on the surface of the plastic sintered plate (9). The inner wall of the plastic sintered plate dust collector (16) and the plate head of the plastic sintered plate (9) are engaged and connected.
2. A purification device for white coal drying tail gas as claimed in claim 1, characterized in that: The plastic sintered plate dust collector (16) is fixed by a steel bracket (1), and a staircase (13) is provided on one side of the box body (5) of the plastic sintered plate dust collector (16), the top of the staircase (13) is connected to a guardrail (7) of the top flat plate of the box body (5), and a rainproof shed (8) is provided on the top of the guardrail (7).
3. A purification device for white coal drying tail gas as claimed in claim 2, characterized in that: An explosion-proof valve (6) is connected to the side wall of the box body (5).