Tail gas purification device

Abstract

The utility model relates to the field of tail gas treatment, in particular to a tail gas purification device. Comprising a blast pipe, a tail gas treatment part, a smoke inlet pipe and a water tank, particles in tail gas can be preliminarily filtered and cooled, water discharged from a water pipe is atomized through air sprayed out of the blast pipe, then atomized water vapor is mixed with the tail gas, and meanwhile the tail gas is driven by forward wind power to carry the water vapor to continue to move forwards; particles in the tail gas enter the water tank and are further precipitated and filtered by water in the water tank, so that the primary treatment of the tail gas is gradually completed.

Description

Technical Field

[0001] The utility model relates to the field of tail gas treatment, in particular to a tail gas purification device. Background Art

[0002] Industrial exhaust gas (smoke) refers to the dust containing pollutants discharged into the atmosphere during the fuel combustion production process within the enterprise's factory area. It often contains various metal and non-metal fine particles. Therefore, the exhaust gas needs to be pre-treated to avoid direct discharge of the exhaust gas into the outside air and polluting the environment. At the same time, preliminary treatment of obvious particles in the exhaust gas is also conducive to further treatment of the exhaust gas using filter cotton or activated carbon. Summary of the invention

[0003] In order to solve the problems of the prior art, the utility model provides an exhaust gas purification device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An exhaust gas purification device, comprising:

[0006] Blast pipe;

[0007] The tail gas treatment section is connected to the blast pipe at the rear side;

[0008] A smoke inlet pipe is connected to one side of the lower part of the exhaust gas treatment part;

[0009] A water tank connected to the outlet of the exhaust gas treatment unit;

[0010] The exhaust gas treatment unit includes:

[0011] shell;

[0012] a wind deflector fixed inside the housing and near the rear of the housing;

[0013] A water pipe is located at the upper part of the shell, the lower part of the water pipe is connected with the inside of the shell, and the outlet of the lower part of the water pipe corresponds to the wind shield;

[0014] An air intake assembly is located at one side of the lower portion of the housing and is close to the rear portion of the housing. The air intake assembly is connected to the smoke inlet pipe, and an upper outlet of the air intake assembly is connected to the rear portion of the exhaust gas treatment chamber.

[0015] The air intake assembly includes:

[0016] An air intake box, fixed to the rear side of the lower part of the shell;

[0017] A baffle is located in the air intake box, the baffle is tilted upward, and the lower end of the baffle is fixed to the front side of the air intake box;

[0018] The dust box is located at the bottom of the air intake box.

[0019] The blast tube comprises:

[0020] The air inlet pipe is a hollow tubular structure;

[0021] The reducing pipe has a rear end connected to the front end of the air inlet pipe, the front end of the reducing pipe is a conical structure, and the diameter of the front end of the reducing pipe is smaller than the diameter of the rear end;

[0022] The exhaust pipe has a rear end connected to the outlet of the reduced diameter pipe, and a front end connected to the rear end of the exhaust gas treatment unit.

[0023] An upper wall is arranged at the upper part of the shell, and a lower wall is arranged at the lower part of the shell;

[0024] The wind deflector includes:

[0025] Inclined plate 1 is located in the housing, the rear end of the inclined plate 1 is fixedly connected to the rear end of the upper wall, the inclined plate 1 is tilted downward and the end thereof extends into the exhaust gas treatment chamber;

[0026] Inclined plate 2 is located in the housing, the inclined plate 2 is located at a lower part of the inclined plate, the rear end of the inclined plate 2 is fixedly connected to the rear end of the lower wall, the inclined plate 2 is arranged to be inclined upward and its end extends into the exhaust gas treatment chamber, the length of the inclined plate 1 is less than the length of the inclined plate 2, and an air outlet gap is formed between the inclined plate 1 and the inclined plate 2;

[0027] A curved pipe is arranged at the front end of the shell, and the main body of the curved pipe is in an inverted "ノ" shape. The upper part of the curved pipe is communicated with the front part of the shell, and the lower part of the curved pipe is communicated with the water tank.

[0028] The water tank body is a rectangular hollow structure, a bottom slope is arranged at the bottom of the water tank, the bottom slope is located at the rear of the water tank, and the lower outlet of the curved pipe faces the bottom slope.

[0029] An exhaust gas exhaust pipe is arranged at the upper front part of the water tank, and the exhaust gas exhaust pipe is communicated with the water tank.

[0030] The dust collecting box is detachably connected to the air inlet box.

[0031] Plug holes are provided on both sides of the lower part of the air intake box. The dust collecting box is a rectangular hollow structure with an opening at the upper part. The dust collecting box is inserted into the air intake box through the plug holes and the dust collecting box is close to the lower part of the air intake box.

[0032] Compared with the prior art, the beneficial effects of the utility model are: it can perform preliminary filtering and cooling treatment on the particles in the exhaust gas, use the wind sprayed from the blower pipe to atomize the water discharged from the water pipe, and then the atomized water vapor is mixed with the exhaust gas. At the same time, the exhaust gas continues to move forward with the water vapor driven by the forward wind force, and the particles in the exhaust gas enter the water tank and are further precipitated and filtered by the water in the water tank, thereby gradually completing the preliminary treatment of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0035] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0036] Figure 3 It is a schematic diagram of the coordinated structure of the reduced diameter pipe and the exhaust pipe in the utility model.

[0037] Figure 4 This is a schematic diagram of the structure of the tail gas treatment chamber in the utility model Figure 1 .

[0038] Figure 5 This is a schematic diagram of the structure of the tail gas treatment chamber in the utility model Figure 2 .

[0039] Figure 6 It is a schematic diagram of the three-dimensional structure of the dust collecting box in the utility model.

[0040] Among them: 100, blast pipe; 110, air inlet pipe; 120, reducing pipe; 130, exhaust pipe; 200, exhaust gas treatment unit; 210, outer shell; 211, exhaust gas treatment chamber; 220, wind shield; 221, inclined plate 1; 222, inclined plate 2; 223, air outlet gap; 2131, exhaust window; 230, water pipe; 240, air intake assembly; 241, air intake box; 2411, jack; 242, baffle; 243, dust collection box; 212, upper wall; 213, lower wall; 214, elbow; 300, smoke inlet pipe; 400, water tank; 410, bottom slope; 420, exhaust gas outlet pipe. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below through embodiments. The embodiments are only used to illustrate the present invention and do not limit the scope of the present invention.

[0042] An exhaust gas purification device, comprising:

[0043] The blast pipe 100; an external fan (not shown) sends air into the blast pipe 100;

[0044] The exhaust gas treatment part 200 is connected to the blast pipe 100 at the rear side, and the exhaust gas treatment part 200 can generate water mist under the action of the blast pipe 100; the blast pipe 100 sends wind into the exhaust gas treatment part 200, and under the action of the blast pipe 100 (the sent wind), water mist is generated in the exhaust gas treatment part 200, and the wind enters the exhaust gas treatment part 200 from the blast pipe 100 and then moves from the back to the front, and the wind moving from the front to the back in the exhaust gas treatment part 200 carries the water mist and mixes with the exhaust gas in the exhaust gas treatment part 200 and moves from the back to the front;

[0045] The smoke inlet pipe 300 is connected to one side of the lower part of the exhaust gas treatment unit 200; the exhaust gas from the outside enters the exhaust gas treatment unit 200 through the smoke inlet pipe 300, and then "mixes" with the wind sent into the exhaust gas treatment unit 200 by the blast pipe 100 and moves from back to front;

[0046] The water tank 400 is connected to the outlet of the tail gas treatment unit 200; the water tank 400 is filled with water, and the tail gas in the tail gas treatment unit 200 moves from the back to the front into the water tank 400, and then the tail gas is purified by the water in the water tank 400.

[0047] The blast pipe 100 delivers a certain amount of gas with wind speed into the exhaust gas treatment section 200, and then the gas is mixed with the exhaust gas passing through the smoke inlet pipe 300 and drives the exhaust gas forward. At the same time, in the exhaust gas treatment section 200, the exhaust gas can be mixed with a certain amount of water mist (discussed later), and the exhaust gas temperature drops. At the same time, a part of the large particles of dust in the exhaust gas mixes with the water mist and sinks, thereby separating from the exhaust gas to achieve a certain degree of exhaust gas purification. Then the exhaust gas enters the water tank 400 from the exhaust gas treatment section 200 and is further treated before being discharged.

[0048] The blast tube 100 comprises:

[0049] The air inlet pipe 110 is a hollow tubular structure;

[0050] The reducing pipe 120 has a rear end connected to the front end of the air inlet pipe 110. The front end of the reducing pipe 120 is a conical structure, and the front end diameter of the reducing pipe 120 is smaller than the rear end diameter. The structure of the reducing pipe 120 that is narrow at the front and wide at the back facilitates the wind entering from the air inlet pipe 110 to move forward at a certain wind speed after passing through the reducing pipe 120.

[0051] The exhaust pipe 130 has a rear end connected to the outlet of the reduced diameter pipe 120, and a front end connected to the rear end of the exhaust gas treatment unit 200. The exhaust pipe 130 has an isosceles trapezoidal cross-section, and the projection of the front end opening toward the rear end opening covers the rear end opening. The exhaust pipe 130 is used as a "transition pipe" to connect the reduced diameter pipe 120 and the exhaust gas treatment unit 200;

[0052] See also Figure 4 , 5 , the tail gas treatment unit 200 includes:

[0053] The housing 210 is a hollow rectangular parallelepiped structure, and an exhaust gas treatment chamber 211 is formed therein;

[0054] A windshield 220 is fixed inside the housing 210 and close to the rear of the housing 210;

[0055] The water pipe 230 is located at the upper part of the outer shell 210, and the lower part of the water pipe 230 is connected to the inside of the outer shell 210, and the lower outlet of the water pipe 230 corresponds to the wind shield 220; by injecting a certain amount of water into the water pipe 230, the water enters the exhaust gas treatment chamber 211 along the wind shield 220, and then under the action of wind, the water forms water mist in the exhaust gas treatment chamber 211 and moves forward along the exhaust gas treatment part 200.

[0056] The air intake assembly 240 is located on one side of the lower portion of the outer shell 210 and is close to the rear portion of the outer shell 210. The air intake assembly 240 is connected to the smoke inlet pipe 300, and the upper outlet of the air intake assembly 240 is connected to the rear portion of the exhaust gas treatment chamber 211. The exhaust gas in the smoke inlet pipe 300 passes through the air intake assembly 240 and enters the exhaust gas treatment chamber 211 from bottom to top, and then moves from back to front in the exhaust gas treatment chamber 211.

[0057] An upper wall 212 is disposed at the upper portion of the housing 210, and a lower wall 213 is disposed at the lower portion of the housing 210;

[0058] The wind deflector 220 includes:

[0059] Inclined plate 1 221 is located in the housing 210, the rear end of the inclined plate 1 221 is fixedly connected to the rear end of the upper wall 212, and the inclined plate 1 221 is tilted downward and the end thereof extends into the exhaust gas treatment chamber 211;

[0060] Inclined plate 222 is located in the outer shell 210, and inclined plate 222 is located at the lower part of inclined plate 1 221. The rear end of inclined plate 222 is fixedly connected to the rear end of lower wall 213. Inclined plate 222 is inclined upward and its end extends into the exhaust gas treatment chamber 211. The length of inclined plate 1 221 is less than the length of inclined plate 222. An air outlet gap 223 is formed between inclined plate 1 221 and inclined plate 222. The air outlet gap 223 is in a contracted shape, and the gas discharged from the blast pipe 100 enters the exhaust gas treatment chamber 211 and then continues to move forward through the air outlet gap 223.

[0061] The rear side of the lower wall 213 is provided with an exhaust window 2131; the exhaust window 2131 is located at the rear of the exhaust treatment chamber 211; the exhaust window 2131 is a rectangular structure, the exhaust window 2131 is located at the lower part of the inclined plate 222, and the projection of the inclined plate 222 toward the exhaust window 2131 covers the exhaust window 2131; the outlet of the air intake assembly 240 is connected to the exhaust treatment chamber 211 through the exhaust window 2131;

[0062] The lower part of the water pipe 230 passes through the upper wall 212 and the lower end outlet of the water pipe 230 faces the inclined plate 221; the water discharged from the water pipe 230 "drips" downward along the inclined plate 221 to the front of the air outlet gap 223, and the gas "discharged" from the air outlet gap 223 directly impacts the water flow "dripping" in front of it. At this time, the gas impacts the water flow to form "water mist", and the smoke discharged from the smoke inlet pipe 300 passes through the air intake assembly 240 and is discharged from the exhaust window 2131 and mixed with the "water mist" discharged from the air outlet gap 223. The temperature of the exhaust gas drops after encountering the "water mist" and the large particles in the exhaust gas are separated and sunk from the exhaust gas after encountering the "water mist", thereby achieving the purpose of preliminary treatment of the exhaust gas. At the same time, the treated exhaust gas is "carried away" by the airflow in the exhaust gas treatment chamber 211 from back to front.

[0063] The air intake assembly 240 includes:

[0064] The air intake box 241 is a right-angled triangular hollow structure, which is fixed to the lower rear side of the housing 210, with the hypotenuse of the air intake box 241 located at the lower position, and the air intake box 241 is connected to the exhaust gas treatment chamber 211 through the exhaust window 2131;

[0065] The baffle plate 242 is located in the air inlet box 241, the baffle plate 242 is tilted upward, and the lower end of the baffle plate 242 is fixed to the front side of the air inlet box 241;

[0066] The dust box 243 is located at the lower part of the air intake box 241, and the dust box 243 is detachably connected to the air intake box 241; preferably, plug holes 2411 are opened on both sides of the lower part of the air intake box 241, and the dust box 243 is a rectangular hollow structure with an open upper part. The dust box 243 is inserted into the air intake box 241 through the plug holes 2411 and the dust box 243 is close to the lower part of the air intake box 241; when the exhaust gas enters the air intake box 241 through the smoke inlet pipe 300, a part of the particles entrained in the exhaust gas descends and enters the dust box 243 under the blocking effect of the baffle 242. When the amount of particles in the dust box 243 increases, the dust box 243 can be drawn out in time for cleaning.

[0067] The upper end outlet of the smoke inlet pipe 300 is sealed and connected to the front side of the air inlet box 241; the exhaust gas enters the air inlet box 241 through the smoke inlet pipe 300.

[0068] A curved pipe 214 is disposed at the front end of the housing 210. The main body of the curved pipe 214 is in an inverted "ノ" shape. The upper portion of the curved pipe 214 is connected to the front portion of the housing 210, and the lower portion of the curved pipe 214 is connected to the water tank 400.

[0069] The main body of the water tank 400 is a rectangular hollow structure, and a bottom inclined surface 410 is provided at the bottom of the water tank 400. The bottom inclined surface 410 is located at the rear of the water tank 400, and the lower outlet of the curved pipe 214 faces the bottom inclined surface 410.

[0070] A water layer (not shown in the figure) is arranged in the water tank 400, and the outlet of the curved pipe 214 goes deep into the water layer (not shown in the figure).

[0071] An exhaust gas exhaust pipe 420 is disposed at the upper front portion of the water tank 400 , and the exhaust gas exhaust pipe 420 is communicated with the water tank 400 .

[0072] The tail gas discharged from the elbow 214 enters the water layer (not shown) in the water tank 400 , and then the particles in the tail gas mix with the water and precipitate and fall from the bottom slope 410 to the bottom of the water tank 400 .

[0073] Working principle: gas is blown into the blast pipe 100 through a blower (not shown in the figure), and the gas blown into the blast pipe 100 passes through the reducing pipe 120 from back to front into the exhaust gas treatment section 200, and at the same time, the exhaust gas passes through the smoke inlet pipe 300 upward into the exhaust gas treatment section 200, and at the same time, water is injected into the exhaust gas treatment section 200 through the water pipe 230, and the gas is "sprayed" from the gas outlet gap 223 and acts on the water droplets dripping from the inclined plate 1 221 to form water mist, and the water mist is mixed with the exhaust gas sprayed from the exhaust window 2131 and the side of the inclined plate 222 to reduce the exhaust gas temperature, and at the same time, a part of the particles in the exhaust gas gradually sinks through the curved pipe 214 into the water tank 400, the exhaust gas is mixed with the water in the water layer in the water tank 400, and the particles in the exhaust gas are precipitated in the water, and then the exhaust gas is discharged outward through the exhaust gas exhaust pipe 420.

Claims

1. An exhaust gas purification device, characterized in that: include: Blast pipe (100); An exhaust gas treatment unit (200), the rear side of which is in communication with the blast pipe (100); A smoke inlet pipe (300) is connected to one side of the lower portion of the exhaust gas treatment unit (200); A water tank (400) connected to the outlet of the tail gas treatment unit (200); The tail gas treatment unit (200) comprises: Housing (210); A windshield (220) is fixed inside the housing (210) and close to the rear of the housing (210); A water pipe (230) is located at the upper part of the housing (210), the lower part of the water pipe (230) is connected to the interior of the housing (210), and the lower outlet of the water pipe (230) corresponds to the windshield (220); An air intake assembly (240) is located on one side of the lower portion of the housing (210) and is close to the rear portion of the housing (210). The air intake assembly (240) is in communication with the smoke inlet pipe (300), and an upper outlet of the air intake assembly (240) is in communication with the rear portion of the exhaust gas treatment chamber (211); The air intake assembly (240) includes: An air intake box (241) is fixed to the rear side of the lower part of the housing (210); A baffle (242) is located in the air intake box (241), the baffle (242) is tilted upward, and the lower end of the baffle (242) is fixed to the front side of the air intake box (241); The dust collecting box (243) is located at the lower part of the air inlet box (241).

2. The exhaust gas purification device according to claim 1, characterized in that: The blast pipe (100) comprises: The air inlet pipe (110) is a hollow tubular structure; The reducing pipe (120) has a rear end connected to the front end of the air inlet pipe (110), the front end of the reducing pipe (120) is a conical structure, and the front end diameter of the reducing pipe (120) is smaller than the rear end diameter; The exhaust pipe (130) has a rear end connected to the outlet of the reducing pipe (120), and a front end connected to the rear end of the exhaust gas treatment unit (200).

3. The exhaust gas purification device according to claim 2, characterized in that: An upper wall (212) is disposed on the upper portion of the housing (210), and a lower wall (213) is disposed on the lower portion of the housing (210); The windshield (220) comprises: Inclined plate 1 (221) is located in the housing (210), the rear end of the inclined plate 1 (221) is fixedly connected to the rear end of the upper wall (212), and the inclined plate 1 (221) is arranged to be inclined downward and the end thereof extends into the exhaust gas treatment chamber (211); Inclined plate 2 (222) is located in the housing (210). Inclined plate 2 (222) is located at the lower part of inclined plate 1 (221). The rear end of inclined plate 2 (222) is fixedly connected to the rear end of the lower wall (213). Inclined plate 2 (222) is arranged to be inclined upward and its end extends into the exhaust gas treatment chamber (211). The length of inclined plate 1 (221) is less than the length of inclined plate 2 (222). An air outlet gap (223) is formed between inclined plate 1 (221) and inclined plate 2 (222).

4. The exhaust gas purification device according to claim 3, characterized in that: A curved pipe (214) is arranged at the front end of the shell (210); the main body of the curved pipe (214) is in an inverted "ノ" shape; the upper part of the curved pipe (214) is connected to the front part of the shell (210); and the lower part of the curved pipe (214) is connected to the water tank (400).

5. The exhaust gas purification device according to claim 4, characterized in that: The water tank (400) has a main body with a rectangular hollow structure. A bottom inclined surface (410) is provided at the bottom of the water tank (400). The bottom inclined surface (410) is located at the rear of the water tank (400), and the lower outlet of the curved pipe (214) faces the bottom inclined surface (410).

6. The exhaust gas purification device according to claim 5, characterized in that: An exhaust gas discharge pipe is arranged at the upper front portion of the water tank (400), and the exhaust gas discharge pipe is in communication with the water tank (400).

7. The exhaust gas purification device according to claim 6, characterized in that: The dust collecting box (243) is detachably connected to the air inlet box (241).

8. The exhaust gas purification device according to claim 7, characterized in that: Insertion holes (2411) are provided on both sides of the lower part of the air intake box (241); the dust collecting box (243) is a rectangular hollow structure with an open top; the dust collecting box (243) is inserted into the air intake box (241) through the insertion holes (2411) and the dust collecting box (243) is close to the lower part of the air intake box (241).

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