Oil smoke waste gas treatment equipment

Abstract

The utility model discloses lampblack waste gas treatment equipment, which comprises a venturi tower, a cyclone demisting tower, a packed tower and an exhaust component, the gas inlet end of the cyclone demisting tower is communicated with the gas outlet end of the venturi tower, the gas outlet end of the cyclone demisting tower is communicated with the gas inlet end of the packed tower, and the gas outlet end of the packed tower is communicated with the gas outlet end of the venturi tower. The air inlet end of the exhaust assembly is communicated with the air outlet end of the packed tower; the Venturi tower is used for pre-treating the lampblack waste gas, the cyclone demisting tower is used for carrying out liquid-gas separation on the pre-treated lampblack waste gas, and the packed tower is used for carrying out secondary washing on the waste gas and then discharging the waste gas through the exhaust assembly. According to the cooking fume waste gas treatment equipment, the cooking fume waste gas is subjected to wet treatment, pretreatment is carried out through the Venturi tower, liquid-gas separation is carried out on the pretreated waste gas through the cyclone demisting tower, secondary washing is carried out through the packed tower, then the waste gas is discharged through the exhaust assembly, and the treatment effect can be effectively guaranteed by adopting multi-stage treatment operation.

Description

Technical Field

[0001] The utility model relates to a cooking fume waste gas treatment device, belonging to the technical field of waste gas treatment. Background Art

[0002] Fried food production lines generate a lot of oil smoke. The current common practice on the market is to use electrostatic oil fume treatment machines to deal with it. Because the electrostatic field needs to be cleaned regularly, it will consume a lot of manpower.

[0003] In addition, there is a risk of fire due to the large amount of oil pollution inside the electrostatic fume treatment equipment. How to design a new fume treatment equipment is imminent. It can be seen that in order to solve this technical problem, a fume exhaust gas treatment equipment is urgently needed. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a cooking fume waste gas treatment device, which adopts a wet treatment method for the cooking fume waste gas, pre-treats it through a Venturi tower, and uses a cyclone defogger to separate the pre-treated waste gas into liquid and gas, and then uses a packed tower for secondary water washing before discharging it through an exhaust assembly. By adopting a multi-stage treatment operation, the treatment effect can be effectively guaranteed.

[0005] In order to achieve the above purpose / solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0006] A fume exhaust gas treatment device includes a venturi tower, a cyclone demisting tower, a packing tower and an exhaust assembly, wherein:

[0007] The air inlet end of the cyclone defogger tower is connected to the air outlet end of the Venturi tower, the air outlet end of the cyclone defogger tower is connected to the air inlet end of the packing tower, and the air inlet end of the exhaust assembly is connected to the air outlet end of the packing tower;

[0008] The Venturi tower is used for pre-treating the oil fume waste gas, the cyclone demisting tower is used for liquid-gas separation of the pre-treated oil fume waste gas, and the packing tower is used for secondary water washing of the waste gas before discharging it through the exhaust assembly.

[0009] Furthermore, the Venturi tower includes a contraction section, a throat and a diffusion section in sequence from the air inlet end to the air outlet end, wherein:

[0010] The throat is provided with a first regulating valve plate for adjusting the air intake volume of the throat.

[0011] Furthermore, the Venturi tower also includes an inlet pipe, a spray pipe and an outlet pipe, wherein:

[0012] The contraction section takes in air through an inlet pipe, the spray pipe is arranged at the inlet pipe or the throat, and the diffusion section is connected to the air inlet end of the cyclone defogger tower through an outlet pipe.

[0013] Furthermore, the cyclone defogger tower includes a first baffle demister and a second regulating valve plate, wherein:

[0014] The first baffle demister is installed on the upper part of the cyclone demister tower;

[0015] The second regulating valve plate is installed at the air inlet end of the cyclone defogger tower.

[0016] Furthermore, the packed tower comprises packing, a second baffle demister and a wire mesh demister arranged in sequence from the air inlet end to the air outlet end, wherein:

[0017] A spray assembly is arranged between the filler and the second baffle demister, and a cleaning pipe is arranged between the second baffle demister and the wire mesh demister.

[0018] Furthermore, it also includes a filter and a Venturi circulation pump, and the filter and the Venturi circulation pump are connected and arranged between the Venturi tower and the cyclone defogger tower.

[0019] Furthermore, it also includes an alkali liquid pump and an alkali liquid storage tank, wherein the alkali liquid pump is used to connect the cyclone defog tower and the alkali liquid storage tank.

[0020] Furthermore, the exhaust assembly includes a fan, an exhaust chimney and an exhaust duct, wherein the exhaust duct is used to connect the air outlet end of the packing tower with the fan, and the air outlet end of the fan is connected to the exhaust chimney.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The oil fume waste gas treatment equipment provided by the utility model adopts a wet treatment method for the oil fume waste gas, pre-treats it through a Venturi tower, and performs liquid-gas separation on the pre-treated waste gas through a cyclone demisting tower, and then performs secondary water washing through a packing tower and then discharges it through an exhaust assembly. By adopting a multi-stage treatment operation, the treatment effect can be effectively guaranteed;

[0023] The oil fume waste gas treatment equipment provided by the utility model is equipped with a filter and a Venturi circulation pump connected between the Venturi tower and the cyclone defogger tower. The washing liquid returned from the cyclone defogger tower is extracted by the Venturi circulation pump, and the washing liquid is sent to the Venturi tower after being filtered by the filter, so as to ensure that the washing liquid is effectively circulated between the Venturi tower and the cyclone defogger tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the oil fume waste gas treatment equipment provided in Example 1;

[0025] Figure 2 This is a schematic diagram of the specific structure of the Venchulita in the oil fume exhaust gas treatment device provided in Example 2;

[0026] Figure 3 It is a schematic diagram of the specific structure of the cyclone demister tower in the oil fume waste gas treatment equipment provided in Example 2;

[0027] Figure 4 yes Figure 3 The schematic diagram of the structure side view of the cyclone mist removal tower shown;

[0028] Figure 5 It is a schematic diagram of the specific structure of the packed tower in the oil fume waste gas treatment equipment provided in Example 2.

[0029] In the figure: 1. Venturi tower; 101. inlet pipe; 102. spray pipe; 103. first manhole; 104. first sight glass; 105. contraction pipe; 106. first adjustable valve plate; 107. throat pipe; 108. bracket; 109. diffuser; 110. outlet pipe; 2. cyclone demister; 201. first shell; 202. first baffle demister; 203. first support; 204. cleaning pipe; 205. inner sleeve; 206. second manhole; 207. second sight glass; 208. first steam coil; 209. second inlet pipe; 210. second adjustable valve plate; 3. Packing tower; 301, wire mesh demister; 302, wire mesh demister support; 303, cleaning two pipes; 304, second baffle demister; 305, second support; 306, spray two pipes; 307, spray head; 308, cylinder; 309, packing; 310, packing support; 311, inlet three pipes; 312, second steam coil; 313, third sight glass; 314, third manhole; 4, filter; 5, venturi circulation pump; 6, alkali solution pump; 7, alkali solution storage tank; 8, packing tower circulation pump; 9, fan; 10, exhaust pipe; 11, exhaust pipe; 12, connecting pipe. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0033] like Figure 1 As shown, this embodiment provides a fume exhaust gas treatment device, including a venturi tower 1, a cyclone demisting tower 2, a packing tower 3 and an exhaust assembly, wherein:

[0034] The air inlet end of the cyclone defogger 2 is connected to the air outlet end of the Venturi tower 1, the air outlet end of the cyclone defogger 2 is connected to the air inlet end of the packing tower 3, and the air inlet end of the exhaust assembly is connected to the air outlet end of the packing tower 3;

[0035] The Venturi tower 1 is used for pre-treating the oil fume waste gas, the cyclone demisting tower 2 is used for liquid-gas separation of the pre-treated oil fume waste gas, and the packing tower 3 is used for secondary water washing of the waste gas before discharging it through the exhaust assembly.

[0036] In the above technical scheme, this embodiment adopts a wet treatment method for the oil fume exhaust gas, pre-treats it through a Venturi tower 1, and the cyclone mist removal tower 2 separates the pre-treated exhaust gas into liquid and gas, and then passes through a packed tower for secondary water washing and then discharges it through an exhaust assembly. By adopting a multi-stage treatment operation, the treatment effect can be effectively guaranteed. Example

[0037] This embodiment provides a cooking fume waste gas treatment device, which is different from the cooking fume waste gas treatment device described in the first embodiment in that:

[0038] In order to realize the pretreatment of the exhaust gas by the Venturi tower 1, the Venturi tower 1 includes a contraction section, a throat 107 and a diffusion section in sequence from the air inlet end to the air outlet end, wherein:

[0039] The throat pipe 107 is provided with a first regulating valve plate 106 for adjusting the air intake of the throat pipe 107 according to the air volume of the waste gas to be processed, so as to ensure that the liquid and the gas are fully mixed;

[0040] like Figure 2 As shown, the convergent section includes a convergent tube 105 , and the divergent section includes a divergent tube 109 .

[0041] The venturi tower 1 further includes an inlet pipe 101, a spray pipe 102, an outlet pipe 110, a first manhole 103, a first sight glass 104 and a bracket 108, wherein:

[0042] The contraction section takes in air through the inlet pipe 101, the spray pipe 102 is arranged at the inlet pipe 101 or the throat pipe for spraying the washing liquid, and the diffusion section is connected to the air inlet end of the cyclone demisting tower 2 through the outlet pipe 110;

[0043] The first manhole 103 is opened at the end of the inlet pipe 101, and the first sight glass 104 is installed on the first manhole 103 to facilitate the subsequent maintenance of the Venturi tower 1 by the staff;

[0044] The bracket 108 is installed on the outside of the Venturi tower 1 and is located below the throat 107. It is an external connecting member of the Venturi tower 1 and is used to connect the Venturi tower 1 with an external supporting member.

[0045] In order to achieve further treatment of the exhaust gas by the cyclone demister 2, the cyclone demister 2 includes a first baffle demister 202 and a second regulating valve plate 210, wherein:

[0046] The first baffle demister 202 is installed on the upper part of the cyclone demister tower 2;

[0047] The second regulating valve plate 210 is installed at the air inlet end of the cyclone demisting tower 2;

[0048] The cyclone demisting tower 2 further includes a first shell 201, a first support 203, a cleaning pipe 204, an inner sleeve 205, a second manhole 206, a second sight glass 207, a first steam coil 208 and a second inlet pipe 209, wherein:

[0049] The first shell 201 is the tower shell of the cyclone mist removal tower 2;

[0050] The first support 203 is installed below the first baffle demister 202 and fixed to the inner wall of the first shell 201, and is used to support the first baffle demister 202;

[0051] The cleaning pipe 204 is located below the first support 203 and faces the first baffle demister 202, and is used to clean the first baffle demister 202. The inner sleeve 205 is located at the center of the first shell 201, and is also called an inner tube or a center tube in the cyclone demister 2. It is a common component in the existing cyclone demister 2 and will not be described in detail here.

[0052] The second manhole 206 and the second viewing mirror 207 are arranged on the outer wall of the first shell 201 for later maintenance;

[0053] The first steam coil 208 is disposed at the bottom of the first shell 201 and is used to maintain the operating temperature inside the device. It is a common component in the existing cyclone demister 2 and will not be described in detail here.

[0054] The second inlet pipe 209 is the air inlet end of the cyclone demister tower 2 , and the cyclone demister tower 2 is connected to the packing tower 3 through a connecting pipe 12 .

[0055] In order to achieve further treatment of the waste gas by the packed tower 3, the packed tower 3 includes a packing 309, a second baffle demister 304 and a wire mesh demister 301 arranged in sequence from the air inlet end to the air outlet end, wherein:

[0056] A spray assembly is provided between the filler 309 and the second baffle demister 304, and a second cleaning pipe 303 is provided between the second baffle demister 304 and the wire mesh demister 301;

[0057] The packed tower 3 further includes a wire mesh demister support 302 installed in the cylinder 308 of the packed tower 3 for supporting the wire mesh demister 301, a second support 304 for supporting the second baffle demister 304, and a packing support 310 for supporting the packing 309;

[0058] The spray assembly includes two spray tubes 306 and a spray head 307, which face the packing 309 and are used to evenly distribute the liquid to the packing 309, increase the gas-liquid contact area, and thus improve the mass transfer efficiency. It is a common component in the existing packed tower 3 and will not be described in detail here;

[0059] It also includes three inlet pipes 311, a second steam coil 312, a third sight glass 313 and a third manhole 314. The second steam coil 312 is arranged at the bottom end of the cylinder 308 to control the temperature inside the equipment. It is a common component in the existing packed tower 3 and will not be described here. The third sight glass 313 and the third manhole 314 are installed on the side of the cylinder 308 of the packed tower 3 for later maintenance.

[0060] It also includes a filter 4 and a venturi circulation pump 5, which are connected and arranged between the venturi tower 1 and the cyclone defogger 2, wherein the venturi circulation pump 5 is used to extract the washing liquid returned from the cyclone defogger 2, and after filtering through the filter 4, the washing liquid is sent to the spray pipe 102 located at the inlet pipe 101 or the throat pipe 107 of the venturi tower 1, so as to ensure that the washing liquid is effectively circulated between the venturi tower 1 and the cyclone defogger 2;

[0061] Similarly, a packed tower circulation pump 8 is also provided at the packed tower 3 for extracting the washing liquid returned from the packed tower 3 and realizing internal circulation with the assistance of relevant filtering components, which is widely used in the art and will not be described in detail here.

[0062] Since the waste gas treated by the cyclone defogger 2 is acidic gas, in order to neutralize the acidic gas, it also includes an alkali solution pump 6 and an alkali solution storage tank 7, wherein the alkali solution pump 6 is used to connect the cyclone defogger 2 and the alkali solution storage tank 7, wherein the alkali solution pump 6 is used to transport the alkaline solution (such as sodium hydroxide solution) stored in the alkali solution storage tank 7 to the cyclone defogger 2.

[0063] In order to realize the gas discharge after the waste gas treatment is completed, the exhaust component includes a fan 9, an exhaust pipe 10 and an exhaust duct 11. The exhaust duct 11 is used to connect the gas outlet end of the packing tower 3 with the fan 9, and the gas outlet end of the fan 9 is connected to the exhaust pipe 10.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A cooking fume waste gas treatment device, characterized in that: It comprises a venturi tower (1), a cyclone demisting tower (2), a packing tower (3) and an exhaust assembly, wherein: The air inlet end of the cyclone defogger (2) is connected to the air outlet end of the Venturi tower (1), the air outlet end of the cyclone defogger (2) is connected to the air inlet end of the packing tower (3), and the air inlet end of the exhaust assembly is connected to the air outlet end of the packing tower (3); The Venturi tower (1) is used for pre-treating the oil fume waste gas, the cyclone demisting tower (2) is used for liquid-gas separation of the pre-treated oil fume waste gas, and the packing tower (3) is used for secondary water washing of the waste gas before discharging it through an exhaust assembly.

2. The oil fume exhaust gas treatment equipment according to claim 1, characterized in that: The Venturi tower (1) comprises a contraction section, a throat (107) and a diffusion section in sequence from the air inlet end to the air outlet end, wherein: The throat pipe (107) is provided with a first regulating valve plate (106) for adjusting the air intake volume of the throat pipe (107).

3. The oil fume exhaust gas treatment equipment according to claim 2, characterized in that: The Venturi tower (1) further comprises an inlet pipe (101), a spray pipe (102) and an outlet pipe (110), wherein: The contraction section takes in air through an inlet pipe (101), the spray pipe (102) is arranged at the inlet pipe (101) or the throat pipe, and the diffusion section is connected to the air inlet end of the cyclone demisting tower (2) through an outlet pipe (110).

4. The oil fume exhaust gas treatment equipment according to claim 3, characterized in that: The cyclone demister (2) comprises a first baffle demister (202) and a second regulating valve plate (210), wherein: The first baffle demister (202) is installed on the upper part of the cyclone demister tower (2); The second regulating valve plate (210) is installed at the air inlet end of the cyclone demisting tower (2).

5. The oil fume exhaust gas treatment equipment according to claim 4, characterized in that: The packed tower (3) comprises a packing (309), a second baffle demister (304) and a wire mesh demister (301) which are sequentially arranged from the air inlet end to the air outlet end, wherein: A spray assembly is provided between the filler (309) and the second baffle demister (304), and a second cleaning pipe (303) is provided between the second baffle demister (304) and the wire mesh demister (301).

6. The oil fume exhaust gas treatment equipment according to claim 1, characterized in that: It also comprises a filter (4) and a Venturi circulation pump (5), wherein the filter (4) and the Venturi circulation pump (5) are arranged in communication between the Venturi tower (1) and the cyclone demisting tower (2).

7. The oil fume exhaust gas treatment equipment according to claim 1, characterized in that: It also comprises an alkali liquid pump (6) and an alkali liquid storage tank (7), wherein the alkali liquid pump (6) is used to connect the cyclone demisting tower (2) and the alkali liquid storage tank (7).

8. The oil fume exhaust gas treatment equipment according to claim 1, characterized in that: The exhaust assembly comprises a fan (9), an exhaust pipe (10) and an exhaust duct (11); the exhaust duct (11) is used to connect the air outlet end of the packing tower (3) and the fan (9); and the air outlet end of the fan (9) is connected to the exhaust pipe (10).

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