A gasification slag treatment waste gas purification mechanism

Abstract

This utility model discloses a gasification slag treatment waste gas purification mechanism, including a base, a cooling device disposed on one side of the purification tower, a dust removal mechanism disposed on the side of the cooling device away from the purification tower, a purification device disposed above the base, and a combustion device disposed on the side of the purification tower away from the cooling device. This utility model relates to the field of waste gas purification technology. This gasification slag treatment waste gas purification mechanism, through the cooperation of a first exhaust pipe, a partition, heat sink, connecting column, heat dissipation plate, fan, and water tank, achieves the effect of discharging the purified waste gas through a second exhaust port, while the heat sink and heat dissipation plate dissipate heat from the high-temperature waste gas. This solves the problem in existing gasification slag treatment waste gas purification structures where high-temperature waste gas may cause the filter cloth pores of the bag filter to enlarge, increasing dust penetration and affecting the dust removal effect.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, specifically a waste gas purification mechanism for gasification slag treatment. Background Technology

[0002] Gasification slag treatment refers to the solid byproducts generated during the combustion process when a portion of the carbonaceous fuel cannot be completely oxidized. These byproducts are usually present in the combustion products in the form of blocks or granules and have the hardness characteristic under high temperature and high pressure. Gasification slag is usually disposed of and treated through professional methods such as solid waste landfill and incineration.

[0003] Existing gasification slag treatment waste gas purification facilities generally use a combination of cyclone dust collectors and bag filters to remove solid particles and dust from the waste gas;

[0004] However, in existing gasification slag treatment waste gas purification structures, when removing dust from waste gas, the high temperature of the waste gas may cause the filter cloth pores of the bag filter to become larger, increasing the dust penetration rate. Furthermore, sticky dust such as tar may agglomerate on the surface of the bag filter, clogging the filter pores and affecting the dust removal effect. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a gas purification mechanism for gasification slag treatment, which solves the problems that existing gas purification structures for gasification slag treatment may cause the filter cloth pores of the bag filter to become larger due to high-temperature exhaust gas, increasing the dust penetration rate, and that sticky dust such as tar may agglomerate on the surface of the bag filter, clogging the filter pores and affecting the dust removal effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gasification slag treatment waste gas purification mechanism, comprising a base, a first support frame fixedly connected to the top of the base, and a purification tower fixedly connected to the inner wall of the first support frame. The gasification slag treatment waste gas purification mechanism further includes a cooling device, a dust removal device, a purification device, and a combustion device; the cooling device is located on one side of the purification tower; the dust removal device is located on the side of the cooling device away from the purification tower; the purification device is located above the base; and the combustion device is located on the side of the purification tower away from the cooling device. The gasification slag is incinerated by the combustion device, the waste gas is purified by the purification device, the purified waste gas is cooled by the cooling device, and the cooled waste gas is dusted by the dust removal device.

[0007] Preferably, the cooling device includes a first exhaust pipe, a second exhaust pipe, a partition, heat sinks, a fan, and a water tank; the first exhaust pipe is connected to the side of the purification tower away from the combustion device; the second exhaust pipe is connected to the bottom of the first exhaust pipe; the top of the partition is fixedly connected to the top of the inner wall of the first exhaust pipe by bolts, and both its front and back sides are attached to the inner wall of the second exhaust pipe; the heat sink is fixedly connected to the surface of the second exhaust pipe and extends into the interior of the second exhaust pipe; the fan is fixedly connected to the outer wall of the purification tower near the second exhaust pipe; the water tank is connected to the bottom of the second exhaust pipe and fixedly connected to the top side of the base; wherein, the purified exhaust gas is cooled by the first exhaust pipe, the second exhaust pipe, the partition, the heat sink, the fan, and the water tank.

[0008] Preferably, the dust removal mechanism includes a dust collection box, a first magnetic suction plate, a second magnetic suction plate, a filter plate, and filter holes; the dust collection box is connected to the end of the first exhaust pipe away from the purification tower; the first magnetic suction plate is fixedly connected to the top of the inner wall of the dust collection box; the second magnetic suction plate is fixedly connected to the inner wall of the dust collection box by bolts; the filter plate is disposed below the second magnetic suction plate and fixedly connected to the bottom of the inner wall of the dust collection box; the filter holes are opened at the bottom of the dust collection box; wherein, the dust collection box, the first magnetic suction plate, the second magnetic suction plate, the filter plate, and the filter holes remove dust from the cooled exhaust gas and store the fine particles in the exhaust gas.

[0009] Preferably, the purification device includes an air inlet pipe, a gravity dust collector, a dust collection plate, a collection mechanism, a grid, a water distribution plate, a water spraying mechanism, and a water inlet; the air inlet pipe is connected to the side of the purification tower away from the first exhaust pipe and extends into the interior of the purification tower; the gravity dust collector is fixedly connected to the inner wall of the purification tower and connected to the end of the air inlet pipe extending into the interior of the purification tower; the dust collection plate is fixedly connected to the inner wall of the gravity dust collector; the collection mechanism is disposed between the base and the purification tower; the grid is disposed above the gravity dust collector and fixedly connected to the inner wall of the purification tower; the water distribution plate is disposed above the grid and fixedly connected to the inner wall of the purification tower; the water spraying mechanism is disposed at the top of the inner wall of the purification tower; the water inlet is connected to the side of the purification tower away from the first exhaust pipe; wherein, the exhaust gas is sprayed and dusted through the air inlet pipe, the gravity dust collector, the dust collection plate, the collection mechanism, the grid, the water distribution plate, the water spraying mechanism, and the water inlet.

[0010] Preferably, the collection mechanism includes a second connecting pipe and a collection box; the second connecting pipe is connected to the bottom of the purification tower; the collection box is connected to the bottom of the second connecting pipe and fixedly connected to the top of the base; wherein, the settled dust and spray liquid are stored through the second connecting pipe and the collection box.

[0011] Preferably, the water spraying mechanism includes a connecting frame, a water distribution tank, and a water spray nozzle; the connecting frame is fixedly connected to the top of the inner wall of the purification tower; the water distribution tank is fixedly connected to the bottom of the connecting frame; and the water spray nozzle is connected to the bottom of the water distribution tank; wherein, the exhaust gas is sprayed and purified through the connecting frame, the water distribution tank, and the water spray nozzle.

[0012] Preferably, the combustion device includes a second support frame, a combustion tower, a gas injector, a natural gas flame arrester, and an air baffle; the second support frame is fixedly connected to the top side of the base; the combustion tower is fixedly connected to the inner wall of the second support frame; the gas injector is connected to the bottom of the combustion tower; the natural gas flame arrester is fixedly connected to the bottom of the inner wall of the combustion tower and connected to the top of the gas injector; the air baffle is disposed above the natural gas flame arrester and fixedly connected to the inner wall of the combustion tower; the manhole is connected to the side of the combustion tower away from the air inlet pipe; wherein, the gasified slag is incinerated through the second support frame, the combustion tower, the natural gas flame arrester, and the air baffle, and oxygen and natural gas are provided to the natural gas flame arrester through the gas injector.

[0013] Beneficial effects

[0014] This utility model provides a gas purification mechanism for treating gasified slag. It has the following beneficial effects: Through the cooperation of a first exhaust pipe, a second exhaust pipe, a partition, heat sinks, a connecting column, a heat dissipation plate, a fan, a first connecting pipe, and a water tank, this mechanism achieves the following: after the gasified slag treatment gas purification structure has completed purification, the gas is discharged through the first exhaust pipe and the second exhaust port. The fan blows on the heat dissipation plate, and the heat sinks and heat dissipate heat from the high-temperature gas. This solves the problem in existing gasified slag treatment gas purification structures where high-temperature gas may cause the filter cloth pores of the bag filter to enlarge, increasing dust penetration, and tar and other sticky dust may agglomerate on the surface of the bag filter, clogging the filter pores and affecting the dust removal effect.

[0015] By coordinating the dust collector, the first magnetic suction plate, the second magnetic suction plate, the filter plate, and the filter holes, the gasification slag treatment waste gas purification structure cools the high-temperature gas, and the first and second magnetic suction plates adsorb solid particles in the gas and filter them through the filter plate, allowing the gas to be discharged through the filter holes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 An exterior schematic diagram;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the first exhaust pipe, the second baffle, and the heat sink.

[0019] Figure 4 for Figure 1 Structural diagram of the purification tower, bar screen, and water distribution plate;

[0020] Figure 5 for Figure 1 A schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Base; 2. Cooling device; 21. First exhaust pipe; 22. Second exhaust pipe; 23. Partition plate; 24. Heat sink; 25. Fan; 26. Water tank; 3. Dust removal mechanism; 31. Dust removal box; 32. First magnetic suction plate; 33. Second magnetic suction plate; 34. Filter plate; 35. Filter holes; 4. Purification device; 41. Air inlet pipe; 42. Gravity dust collector; 43. Dust removal plate; 44. Collection mechanism; 441. Second connecting pipe; 442. Collection box; 45. Grille; 46. Water distribution plate; 47. Water spray mechanism; 471. Connecting frame; 472. Water distribution box; 473. Water spray nozzle; 48. Water inlet; 5. Combustion device; 51. Second support frame; 52. Combustion tower; 53. Gas injection nozzle; 54. Natural gas flame arrester; 55. Air vane; 56. Manhole; 6. First support frame; 7. Purification tower. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In existing gasification slag treatment waste gas purification structures, when removing dust from waste gas, the high temperature of the waste gas may cause the filter cloth pores of the bag filter to become larger, increasing the dust penetration rate. Furthermore, sticky dust such as tar may agglomerate on the surface of the bag filter, clogging the filter pores and affecting the dust removal effect.

[0024] In view of this, the present invention provides a gasification slag treatment waste gas purification mechanism. This mechanism, through the cooperation of a first exhaust pipe, a second exhaust pipe, a partition, heat sinks, a connecting column, a heat dissipation plate, a fan, a first connecting pipe, and a water storage tank, achieves the effect of discharging the purified waste gas through the first and second exhaust pipes after purification, with the fan blowing on the heat dissipation plate and the heat sinks and heat dissipating heat from the high-temperature waste gas. This solves the problem that existing gasification slag treatment waste gas purification structures, when removing dust from waste gas, may cause the filter cloth pores of the bag filter to enlarge due to high-temperature waste gas, increasing dust penetration, and that sticky dust such as tar may agglomerate on the surface of the bag filter, clogging the filter pores and affecting the dust removal effect.

[0025] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly introduced below.

[0026] Example 1, by Figure 1-5 As can be seen, the gasification slag treatment waste gas purification mechanism in this case includes a base 1, a first support frame 6 fixedly connected to the top of the base 1, and a purification tower 7 fixedly connected to the inner wall of the first support frame 6. The gasification slag treatment waste gas purification mechanism also includes a cooling device 2, a dust removal mechanism 3, a purification device 4, and a combustion device 5. The cooling device 2 is located on one side of the purification tower 7; the dust removal mechanism 3 is located on the side of the cooling device 2 away from the purification tower 7; the purification device 4 is located above the base 1; and the combustion device 5 is located on the side of the purification tower 7 away from the cooling device 2. The gasification slag is incinerated by the combustion device 5, the waste gas is purified by the purification device 4, the purified waste gas is cooled by the cooling device 2, and the cooled waste gas is dusted by the dust removal mechanism 3.

[0027] In the specific implementation process, it is worth noting that the base 1 is made of four channel steels spliced ​​together, with one horizontal square steel and two vertical square steels fixedly connected inside. The first support frame 6 can be made of cast iron or carbon steel to ensure the support capacity and stability of the first support frame 6. The purification tower 7 is made of 316L stainless steel. The inner wall of the purification tower 7 is coated with epoxy resin to ensure that the purification tower 7 will not be damaged by internal corrosion. First, the gasification slag is burned by the combustion device 5. Then, the exhaust gas generated by burning the gasification slag is purified by the purification device 4. The high temperature exhaust gas is cooled by heat exchange by the cooling device 2, and the condensate generated is stored. The cooled exhaust gas is further dusted by the dust removal mechanism 3 to filter out PM2.5 fine dust.

[0028] Furthermore, the cooling device 2 includes a first exhaust pipe 21, a second exhaust pipe 22, a partition 23, a heat sink 24, a fan 25, and a water tank 26; the first exhaust pipe 21 is connected to the side of the purification tower 7 away from the combustion device 5; the second exhaust pipe 22 is connected to the bottom of the first exhaust pipe 21; the top of the partition 23 is fixedly connected to the top of the inner wall of the first exhaust pipe 21 by bolts, and both its front and back sides are attached to the inner wall of the second exhaust pipe 22; the heat sink 24 is fixedly connected to the surface of the second exhaust pipe 22 and extends into the interior of the second exhaust pipe 22; the fan 25 is fixedly connected to the outer wall of the purification tower 7 near the second exhaust pipe 22; the water tank 26 is connected to the bottom of the second exhaust pipe 22 and fixedly connected to the top side of the base 1; wherein, the purified exhaust gas is cooled by the first exhaust pipe 21, the second exhaust pipe 22, the partition 23, the heat sink 24, the fan 25, and the water tank 26.

[0029] In the specific implementation process, it is worth noting that the heat sink 24 is made of aluminum alloy, which has the characteristics of being lightweight, highly resistant to oxidation, and having high heat dissipation efficiency. The side of the heat sink 24 extending into the second exhaust pipe 22 is a finned heat sink. The outside of the heat sink 24 is a hollow tube with several grooves on its surface, which increases the surface area of ​​the heat sink 24. The part of the heat sink 24 that penetrates the second exhaust pipe 22 is made of brass. Through the cooperation between the first exhaust pipe 21, the second exhaust pipe 22, and the baffle 23, high-temperature exhaust gas enters the second exhaust pipe 22 through one end of the first exhaust pipe 21. The baffle 23 guides the exhaust gas. Through the cooperation between the heat sink 24 and the fan 25, the fins of the heat sink 24 increase the contact area between the high-temperature exhaust gas and the heat sink 24, accelerating the heat dissipation process. Heat is absorbed and transferred to the outside of the heat sink 24. The outer wall of the heat sink 24, with its large surface area, quickly dissipates the internal heat to the surrounding air. The fan 25 accelerates the airflow, improving the heat exchange efficiency between the outer wall of the heat sink 24 and the air, and quickly carrying away the heat on the surface of the heat sink 24, thereby effectively reducing the temperature inside the second exhaust pipe 22. Water vapor inside the high-temperature exhaust gas comes into contact with the heat sink 24 and is cooled and liquefied. The liquefied condensate enters the interior of the water storage tank 26, which stores the condensate. A drain pipe is connected to the side of the water storage tank 26 away from the purification tower 7, and an exhaust valve connected to the water storage tank 26 is installed above the drain pipe. The air inside the water storage tank 26 is discharged through the exhaust valve, and the condensate inside the water storage tank 26 is discharged through the drain pipe and handled by the staff.

[0030] Furthermore, the dust removal mechanism 3 includes a dust collection box 31, a first magnetic suction plate 32, a second magnetic suction plate 33, a filter plate 34, and filter holes 35; the dust collection box 31 is connected to the end of the first exhaust pipe 21 away from the purification tower 7; the first magnetic suction plate 32 is fixedly connected to the top of the inner wall of the dust collection box 31; the second magnetic suction plate 33 is fixedly connected to the inner wall of the dust collection box 31 by bolts; the filter plate 34 is disposed below the second magnetic suction plate 33 and fixedly connected to the bottom of the inner wall of the dust collection box 31; the filter holes 35 are opened at the bottom of the dust collection box 31; wherein, the dust collection box 31, the first magnetic suction plate 32, the second magnetic suction plate 33, the filter plate 34, and the filter holes 35 remove dust from the cooled exhaust gas and store the fine particles in the exhaust gas;

[0031] In the specific implementation process, it is worth noting that the dust collector 31 is made entirely of stainless steel to ensure that it will not rust due to external exhaust gas. The dust collector 31 has a hinged sliding door on its exterior. When cleaning is required, the interior of the dust collector 31 is accessed by opening the sliding door. The first magnetic plates 32 are all ESP electrode plates. The second magnetic plate 33 is a horizontal magnetic plate with several evenly spaced circular holes on its surface. The filter plate 34 uses a nanofiber membrane composed of multi-layer composite filter material to ensure that it can accurately filter fine dust particles. The cooperation between the second magnetic suction plate 33 and the filter plate 34 allows the cooled exhaust gas to first come into full contact with the first magnetic suction plate 32. Under the guiding effect of the first magnetic suction plate 32, the exhaust gas falls onto the surface of the second magnetic suction plate 33. The first magnetic suction plate 32 charges the dust with a high voltage of 30 to 60 kilowatts. The charged fine dust is attracted by the second magnetic suction plate 33, which helps to reduce the accumulation of dust on the surface of the bottom filter plate 34 and prolong the cleaning cycle. The exhaust gas falls into the surface of the filter plate 34 through the round holes on the surface of the second magnetic suction plate 33. The filter plate 34 intercepts the fine dust. The exhaust gas after dust removal leaves the interior of the dust collection box 31 through the filter holes 35.

[0032] Example 2, by Figure 1-5 It is known that the purification device 4 includes an air inlet pipe 41, a gravity dust collector 42, a dust collection plate 43, a collection mechanism 44, a grid 45, a water distribution plate 46, a water spraying mechanism 47, and a water inlet 48; the air inlet pipe 41 is connected to the side of the purification tower 7 away from the first exhaust pipe 21 and extends into the interior of the purification tower 7; the gravity dust collector 42 is fixedly connected to the inner wall of the purification tower 7 and is connected to the end of the air inlet pipe 41 extending into the interior of the purification tower 7; the dust collection plate 43 is fixedly connected to the inner wall of the gravity dust collector 42; the collection mechanism 44 is disposed between the base 1 and the purification tower 7; the grid 45 is positioned above the gravity dust collector 42 and is fixedly connected to the inner wall of the purification tower 7; the water distribution plate 46 is positioned above the grid 45 and is fixedly connected to the inner wall of the purification tower 7; the water spraying mechanism 47 is positioned at the top of the inner wall of the purification tower 7; the water inlet 48 is connected to the side of the purification tower 7 away from the first exhaust pipe 21; wherein, the dust in the exhaust gas is filtered and collected through the air inlet pipe 41, the gravity dust collector 42, the dust collector plate 43 and the collection mechanism 44, and the exhaust gas is sprayed through the grid 45, the water distribution plate 46, the water spraying mechanism 47 and the water inlet 48;

[0033] In the specific implementation process, it is worth noting that the dust removal plate 43 is welded from two inclined plates with the inclined surface facing downwards. The grid 45 consists of a main frame, grid plates, and connectors. The main frame is fixedly connected to the inner wall of the purification tower 7. Multiple grid plates are fixedly connected by connectors, increasing the contact area with the exhaust gas. Through the cooperation between the inlet pipe 41, the gravity dust collector 42, the dust removal plate 43, and the collection mechanism 44, the exhaust gas first enters the gravity dust collector 42 through the inlet pipe 41. The flow velocity of the exhaust gas decreases inside the gravity dust collector 42 and comes into contact with the dust removal plate 43. The dust in the exhaust gas settles due to its own gravity. In the collection mechanism 44, the exhaust gas moves upward through the bottom of the gravity dust collector 42. The surface of the water distribution plate 46 is provided with several water passage holes. Through the cooperation between the grid 45, the water distribution plate 46, the water spraying mechanism 47 and the water inlet 48, the water inlet 48 is first connected to the external spray liquid delivery pipe. The spray liquid enters the water spraying mechanism 47 through the water inlet 48. The water spraying mechanism 47 sprays the spray liquid onto the gas. The spray liquid falls on the surface of the water distribution plate 46 and falls on the surface of the grid 45 through the water passage holes. The grid 45 and the water distribution plate 46 increase the contact area between the spray liquid and the exhaust gas, which is conducive to the spray liquid fully purifying the exhaust gas.

[0034] Furthermore, the collection mechanism 44 includes a second connecting pipe 441 and a collection box 442; the second connecting pipe 441 is connected to the bottom of the purification tower 7; the collection box 442 is connected to the bottom of the second connecting pipe 441 and is fixedly connected to the top of the base 1; wherein, the settled dust and spray liquid are stored through the second connecting pipe 441 and the collection box 442.

[0035] In the specific implementation process, it is worth noting that the bottom of the outer wall of the collection box 442 is connected to a drain pipe. The mixture of spray liquid and dust inside the collection box 442 is discharged to the outside of the collection box 442 through the drain pipe. Through the cooperation between the second connecting pipe 441 and the collection box 442, the exhaust gas after dust removal rises through the bottom of the gravity dust collector 42. Under the action of gravity, the dust enters the inside of the collection box 442 through the second connecting pipe 441, is adsorbed by the spray liquid inside the collection box 442, and settles under the influence of gravity. The collection box 442 stores the dust.

[0036] Furthermore, the water spraying mechanism 47 includes a connecting frame 471, a water distribution tank 472, and a water spray nozzle 473; the connecting frame 471 is fixedly connected to the top of the inner wall of the purification tower 7; the water distribution tank 472 is fixedly connected to the bottom of the connecting frame 471; the water spray nozzle 473 is connected to the bottom of the water distribution tank 472; wherein, the connecting frame 471 provides support for the water distribution tank 472, and the water distribution tank 472 and the water spray nozzle 473 spray and purify the exhaust gas.

[0037] In the specific implementation process, it is worth noting that, in order to adapt to the composition of the exhaust gas, the spray nozzle 473 can be a desulfurization and denitrification nozzle, which adopts a spiral nozzle and has the characteristics of large flow and corrosion resistance. Through the cooperation between the connecting frame 471, the water distribution tank 472 and the spray nozzle 473, the connecting frame 471 fixes the water distribution tank 472, the water distribution tank 472 stores the spray liquid, and the spray nozzle 473 sprays the spray liquid inside the water distribution tank 472 into a mist to spray the exhaust gas.

[0038] Furthermore, the combustion device 5 includes a second support frame 51, a combustion tower 52, a gas injector 53, a natural gas flame arrester 54, and an air deflector 55; the second support frame 51 is fixedly connected to the top side of the base 1; the combustion tower 52 is fixedly connected to the inner wall of the second support frame 51; the gas injector 53 is connected to the bottom of the combustion tower 52; the natural gas flame arrester 54 is fixedly connected to the bottom of the inner wall of the combustion tower 52 and connected to the top of the gas injector 53; the air deflector 55 is disposed above the natural gas flame arrester 54 and fixedly connected to both sides of the inner wall of the combustion tower 52; the manhole door 56 is connected to the side of the combustion tower 52 away from the air inlet pipe 41; wherein, the gasified slag is incinerated through the second support frame 51, the combustion tower 52, the natural gas flame arrester 54, and the air deflector 55, and oxygen and natural gas are provided to the natural gas flame arrester 54 through the gas injector 53;

[0039] In the specific implementation process, it is worth noting that the second support frame 51 is made of cast iron or carbon steel to ensure its support capacity and stability. The second support frame 51 supports the combustion tower 52, which is made of high-temperature alloy steel, resistant to high-temperature oxidation and flue gas corrosion, ensuring that the combustion tower 52 can meet high-temperature conditions. The top of the combustion tower 52 is connected to an inlet. An igniter is installed at the bottom of the natural gas flame arrester 54. The igniter's circuit is connected in series with an external control button. When the external control button is closed, the circuit triggers the igniter, igniting the natural gas. The flame spreads in the pipe of the natural gas flame arrester 54 and is divided into small flame streams by the metal mesh inside the natural gas flame arrester 54 to prevent backflow and explosion. The surface of the air plate 55 has several holes, and the top of the holes is connected to an air cap, which allows gas to pass through. The gasified slag is obstructed and evenly dispersed, thus achieving uniform air distribution and preventing the deposition of gasified slag. Through the cooperation between the second support frame 51, combustion tower 52, gas injection nozzle 53, natural gas flame arrester 54 and air plate 55, inert material is first injected into the interior of combustion tower 52 as a heat storage body. Then, gasified slag is injected into the interior of combustion tower 52 through the feed port. Then, natural gas flame arrester 54 is activated, and oxygen and natural gas are added into the interior of natural gas flame arrester 54 through gas injection nozzle 53. Natural gas is ignited by igniter. Natural gas flame arrester 54 incinerates gasified slag. An upward airflow is formed through air plate 55, so that gasified slag is fully burned in a suspended state. The solid residue of gasified slag after combustion falls on the top of air plate 55. Workers clean the solid residue out of the exterior of combustion tower 52 by opening manhole door 56. After completion, manhole door 56 is closed, and solid residue is collected and processed as building material raw material or used for roadbed filling.

[0040] Specifically, when the gasification slag treatment waste gas purification unit is in use, gasification slag is first injected into the combustion tower 52, and the natural gas flame arrester 54 burns the gasification slag. The waste gas generated by combustion enters the purification tower 7 through the inlet pipe 41. The gravity dust collector 42 performs preliminary dust removal on the dust in the waste gas. The spray nozzle 473 sprays the waste gas with spraying liquid. The purified gas enters the second exhaust pipe 22 through the first exhaust pipe 21. The heat sink 24 cools and dehumidifies the gas. The generated condensate flows into the water storage tank 26. The cooled gas enters the dust collection box 31 through the second exhaust pipe 22. The first magnetic suction plate 32, the second magnetic suction plate 33 and the filter plate 34 further remove dust from the gas. After completion, the gas that meets the emission standards is discharged out of the dust collection box 31 through the filter hole 35.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gasification slag treatment waste gas purification mechanism comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a first support frame (6), and the inner wall of the first support frame (6) is fixedly connected to a purification tower (7). The gasification slag treatment waste gas purification mechanism further includes: A cooling device (2) is installed on one side of the purification tower (7); The dust removal mechanism (3) is located on the side of the cooling device (2) away from the purification tower (7); The purification device (4) is located above the base (1); The combustion device (5) is located on the side of the purification tower (7) away from the cooling device (2); The gasified slag is incinerated by the combustion device (5), the waste gas is purified by the purification device (4), the purified waste gas is cooled by the cooling device (2), and the cooled waste gas is dusted by the dust removal mechanism (3).

2. A slag treatment off-gas cleaning mechanism according to claim 1, characterized in that: The cooling device (2) includes: The first exhaust pipe (21) is connected to the side of the purification tower (7) away from the combustion device (5); The second exhaust pipe (22) is connected to the bottom of the first exhaust pipe (21); The top of the partition (23) is fixed to the top of the inner wall of the first exhaust pipe (21) by bolts, and both the front and back are attached to the inner wall of the second exhaust pipe (22); The heat sink (24) is fixedly connected to the surface of the second exhaust pipe (22) and extends into the interior of the second exhaust pipe (22); The fan (25) is fixedly connected to the outer wall of the purification tower (7) on the side near the second exhaust pipe (22); A water storage tank (26) is connected to the bottom of the second exhaust pipe (22); The purified exhaust gas is cooled by the first exhaust pipe (21), the second exhaust pipe (22), the partition (23), the heat sink (24), the fan (25), and the water tank (26).

3. The gasification slag treatment waste gas purification mechanism according to claim 2, characterized in that: The dust removal mechanism (3) includes: The dust collection box (31) is connected to the end of the first exhaust pipe (21) away from the purification tower (7); The first magnetic suction plate (32) is fixedly connected to the top of the inner wall of the dust collection box (31); The second magnetic suction plate (33) is fixedly connected to the inner wall of the dust collection box (31) by bolts; The filter plate (34) is located below the second magnetic suction plate (33) and is fixedly connected to the bottom of the inner wall of the dust collector (31); Filter holes (35) are provided at the bottom of the dust collection box (31); The dust removal box (31), the first magnetic suction plate (32), the second magnetic suction plate (33), the filter plate (34) and the filter holes (35) are used to remove dust from the cooled exhaust gas and store the fine particles in the exhaust gas.

4. The slag treatment off-gas cleaning mechanism according to claim 2, characterized in that: The purification device (4) includes: The intake pipe (41) is connected to the side of the purification tower (7) away from the first exhaust pipe (21) and extends into the interior of the purification tower (7); The gravity dust collector (42) is fixedly connected to the inner wall of the purification tower (7) and connected to one end of the air inlet pipe (41) extending into the purification tower (7); The dust collector plate (43) is fixedly connected to the inner wall of the gravity dust collector (42); The collection mechanism (44) is located between the base (1) and the purification tower (7); A grid (45) is installed above the gravity dust collector (42) and fixedly connected to the inner wall of the purification tower (7); The water distribution plate (46) is set above the grid (45) and fixedly connected to the inner wall of the purification tower (7); A water spray mechanism (47) is installed on the top of the inner wall of the purification tower (7); The water inlet (48) is connected to the side of the purification tower (7) away from the first exhaust pipe (21); The dust in the exhaust gas is filtered and collected through the air inlet pipe (41), gravity dust collector (42), dust collector plate (43) and collection mechanism (44), and the exhaust gas is sprayed through the grille (45), water divider plate (46), water spraying mechanism (47) and water inlet (48).

5. A slag treatment off-gas cleaning mechanism according to claim 4, characterized in that: The collection mechanism (44) includes: The second connecting pipe (441) is connected to the bottom of the purification tower (7); The collection box (442) is connected to the bottom of the second connecting pipe (441) and fixedly connected to the top of the base (1); The settled dust and spray liquid are stored through the second connecting pipe (441) and the collection box (442).

6. A slag treatment off-gas cleaning mechanism according to claim 4, characterized in that: The water spray mechanism (47) includes: The connecting bracket (471) is fixedly connected to the top of the inner wall of the purification tower (7); The water distribution tank (472) is fixedly connected to the bottom of the connecting frame (471); The water nozzle (473) is connected to the bottom of the water distribution tank (472); The connecting frame (471) provides support for the water distribution tank (472), and the water distribution tank (472) and the spray nozzle (473) spray and purify the exhaust gas.

7. The slag treatment off-gas cleaning mechanism according to claim 4, characterized in that: The combustion device (5) includes: The second support frame (51) is fixedly connected to one side of the top of the base (1); The combustion tower (52) is fixedly connected to the inner wall of the second support frame (51); The air supply nozzle (53) is connected to the bottom of the combustion tower (52); The natural gas flame arrester (54) is fixedly connected to the bottom of the inner wall of the combustion tower (52) and connected to the top of the gas supply nozzle (53); The air deflector (55) is located above the natural gas flame arrester (54) and is fixedly connected to the inner wall of the combustion tower (52); Manhole (56) is connected to the side of the combustion tower (52) away from the intake pipe (41); The gasified slag is incinerated through the second support frame (51), combustion tower (52), natural gas flame arrester (54) and air plate (55), and oxygen and natural gas are supplied to the natural gas flame arrester (54) through the gas supply nozzle (53).

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