CN216346299U

CN216346299U - Waste gas treatment system

Info

Publication number: CN216346299U
Application number: CN202122425295.5U
Authority: CN
Inventors: 戴炳慧; 端午祥; 黄强; 李孝鹏; 刘宁云
Original assignee: Nanjing Nbe Sci & Tech Co ltd
Current assignee: Nanjing Nbe Sci & Tech Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-04-19
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a waste gas treatment system, which belongs to the technical field of waste gas treatment and comprises a vertical incinerator, wherein the top end of the vertical incinerator is provided with a material inlet, and the bottom end of the vertical incinerator is provided with a smoke dust outlet; the combustor is arranged at the top end of the vertical incinerator and is provided with a fuel inlet, a waste gas inlet, a first air inlet and a mixing outlet, and the mixing outlet is communicated with the material inlet; the air feeder is communicated with the first air inlet; the gravity ash remover comprises a first inclined pipe, a second inclined pipe and an ash discharge valve, wherein one end of the first inclined pipe is communicated with the smoke dust outlet, the other end of the first inclined pipe is communicated with the ash discharge valve, and one end of the second inclined pipe is communicated with the ash discharge valve; the chimney is communicated with the other end of the second inclined pipe; and the induced draft fan is communicated between the chimney and the second inclined pipe. The waste gas treatment system provided by the utility model has lower cost, can reduce the probability of smoke blockage, and improves the reliability of the waste gas treatment system.

Description

Waste gas treatment system

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment system.

Background

In industrial production, a large amount of waste gas, such as silane or silicon-containing waste gas, is generated, and the direct discharge of the waste gas has a large influence on the environment, so that the waste gas needs to be treated and then discharged.

At present, silane and silicon-containing waste gas are incinerated by an incinerator so as to be decomposed into gases with small influence on the environment, such as carbon dioxide. In the prior art, the incinerator is a horizontal incinerator, and other equipment is needed for auxiliary treatment of silane and silicon-containing waste gas, so that the cost for treating the waste gas in the prior art is high. Furthermore, the horizontal incinerator is more prone to smoke blockage, resulting in lower reliability of waste gas treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an exhaust gas treatment system which has lower cost, can reduce the probability of smoke blockage and improves the reliability of the exhaust gas treatment system.

As the conception, the technical scheme adopted by the utility model is as follows:

an exhaust treatment system comprising:

the vertical incinerator is provided with a material inlet at the top end and a smoke outlet at the bottom end;

the burner is arranged at the top end of the vertical incinerator and is provided with a fuel inlet, a waste gas inlet, a first air inlet and a mixing outlet, and the mixing outlet is communicated with the material inlet;

the air feeder is communicated with the first air inlet;

the gravity ash remover comprises a first inclined pipe, a second inclined pipe and an ash discharge valve, wherein one end of the first inclined pipe is communicated with the smoke dust outlet, the other end of the first inclined pipe is communicated with the ash discharge valve, and one end of the second inclined pipe is communicated with the ash discharge valve;

the chimney is communicated with the other end of the second inclined pipe;

and the induced draft fan is communicated between the chimney and the second inclined tube.

Optionally, an included angle between the first inclined tube and a horizontal plane is greater than or equal to 50 °, and/or an included angle between the second inclined tube and a horizontal plane is greater than or equal to 50 °.

Optionally, the system further comprises a bag-type dust collector, and the bag-type dust collector is communicated between the other end of the second inclined pipe and the induced draft fan.

Optionally, the vertical incinerator is of a jacket structure, the vertical incinerator comprises an inner shell and an outer shell, the outer shell is sleeved outside the inner shell, the material inlet is formed in the inner shell, a smoke exhaust port is further formed in the bottom end of the inner shell, and the smoke outlet is formed in the bottom end of the outer shell.

Optionally, the side wall of the housing has a second air inlet, the second air inlet being in communication with the blower.

Optionally, the vertical incinerator still includes the distributor, the distributor connect in the inner shell with between the shell, just the distributor is followed the circumference of inner shell extends, a plurality of distribution holes have been seted up on the distributor.

Optionally, a plurality of the distribution holes are uniformly and spaced apart.

Optionally, the support assembly is connected between the inner shell and the outer shell.

Optionally, the supporting component includes a plurality of water conservancy diversion pieces that are the heliciform and locate the inner shell outer wall, the one end of water conservancy diversion piece is connected in the shell, and the other end is connected in the inner shell.

Optionally, the outer shell includes a cylindrical section and a conical section, a large diameter end of the conical section is connected to the cylindrical section, the cylindrical section is sleeved outside the inner shell, and the smoke outlet is arranged at a small diameter end of the conical section.

The utility model has at least the following beneficial effects:

the waste gas treatment system provided by the utility model directly uses the vertical incinerator, other auxiliary equipment does not need to be arranged for the vertical incinerator, so that the structure of the waste gas treatment system is simpler, the cost is lower, the initial investment is less, in addition, the waste gas treatment system adopts the gravity ash remover, the arrangement of the first inclined pipe in the gravity ash remover can prevent the smoke dust from being accumulated in the first inclined pipe, further, the probability of smoke dust blockage can be reduced, and the reliability of the waste gas treatment system is improved.

Drawings

FIG. 1 is a schematic structural diagram of an exhaust treatment system provided in an embodiment of the present invention;

FIG. 2 is a schematic structural view of a vertical incinerator according to an embodiment of the present invention;

FIG. 3 is a schematic sectional view of a vertical incinerator according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating a connection between a baffle and an inner casing and an outer casing according to an embodiment of the present invention.

In the figure:

1. a vertical incinerator; 101. a material inlet; 102. a smoke outlet; 103. a second air inlet; 11. An inner shell; 111. a smoke outlet; 12. a housing; 121. a cylindrical section; 122. a conical section; 13. a flow deflector;

2. a burner; 21. a fuel inlet; 22. an exhaust gas inlet; 23. a first air inlet;

3. a blower;

4. a gravity ash remover; 41. a first inclined tube; 42. a second inclined tube; 43. an ash discharge valve;

5. a chimney;

6. an induced draft fan;

7. a bag-type dust collector;

8. a distributor; 81. a distribution hole;

9. a flame detector; 10. and (6) detecting the instrument.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides an exhaust treatment system, has lower cost, can also reduce the probability that takes place the smoke and dust jam, has improved exhaust treatment system's reliability. The waste gas treatment system is used for treating waste gas, such as silane and silicon-containing waste gas.

As shown in fig. 1, the exhaust gas treatment system includes a vertical incinerator 1, a burner 2, a blower 3, a gravity ash remover 4, a chimney 5, and an induced draft fan 6.

The vertical incinerator 1 is of a vertical structure, namely, a feeding port of the vertical incinerator 1 is arranged at the top end, and a flue gas discharge port is arranged at the bottom end. Specifically, as shown in fig. 2, the vertical type combustion furnace 1 has a material inlet 101 at the top end thereof, and the mixed exhaust gas, air and fuel can enter the vertical type combustion furnace 1 through the material inlet 101. The bottom end of the vertical incineration furnace 1 is provided with a smoke outlet 102 so that smoke after the combustion of the exhaust gas can be discharged from the smoke outlet 102.

The burner 2 is disposed at the top end of the vertical incinerator 1, and the burner 2 has a fuel inlet 21, an exhaust gas inlet 22, a first air inlet 23, and a mixing outlet which is communicated with the material inlet 101. The burner 2 is used to mix exhaust gas, air, and fuel and to eject the mixture into the vertical combustion furnace 1 in a predetermined manner. Specifically, the mixed exhaust gas, air and fuel enter the vertical incinerator 1 through the mixing outlet and the material inlet 101. It will be appreciated that the burner 2 also has the function of igniting the gas in the vertical incinerator 1 through the mixing outlet and the material inlet 101 to enable ignition to occur at the initial start-up of the vertical incinerator 1.

As shown in fig. 1, the blower 3 is communicated with the first air inlet 23 for inputting air into the combustor 2 through the first air inlet 23 so that the air has sufficient power to overcome the duct resistance and the resistance of the combustor 2. The gravity ash remover 4 comprises a first chute 41, a second chute 42 and an ash discharge valve 43. One end of the first inclined pipe 41 is communicated with the smoke outlet 102, the other end of the first inclined pipe 41 is communicated with the ash discharge valve 43, and one end of the second inclined pipe 42 is communicated with the ash discharge valve 43. The smoke in the vertical type combustion furnace 1 is discharged to the first inclined tube 41 through the smoke outlet 102, and when the smoke flows in the first inclined tube 41, since the first inclined tube 41 is inclined, the dust in the smoke is not accumulated in the first inclined tube 41 under the action of gravity, but is easily accumulated at the dust discharging valve 43, and when the amount of the dust at the dust discharging valve 43 is accumulated by a certain amount, the dust discharging valve 43 can be opened to discharge the dust. In this embodiment, the dust discharging valve 43 is a valve body having a star-shaped structure. The chimney 5 is communicated with the other end of the second inclined pipe 42, and the induced draft fan 6 is communicated between the chimney 5 and the second inclined pipe 42, so that the flue gas in the second inclined pipe 42 can flow to the chimney 5 under the driving of the induced draft fan 6, and is exhausted by the chimney 5. Optionally, the induced draft fan 6 also has a function of pressure regulation of the whole waste gas treatment system, and specifically, negative pressure regulation of the whole system is realized through frequency conversion regulation of the induced draft fan 6.

The exhaust-gas treatment system that this embodiment provided, directly use vertical burning furnace 1, need not to be equipped with other auxiliary assembly for vertical burning furnace 1, make exhaust-gas treatment system's structure simpler, the cost is lower, the initial investment is less, and, exhaust-gas treatment system has adopted gravity ash separator 4, the setting of first pipe chute 41 can prevent that the smoke and dust from piling up in gravity ash separator 4, and then can reduce the probability that takes place the smoke and dust jam, exhaust-gas treatment system's reliability has been improved.

Moreover, the waste gas treatment system provided by the embodiment also has the characteristic of convenient operation, and each electric component can realize electric control, so that automatic management is realized.

Optionally, the angle between the first inclined tube 41 and the horizontal plane is greater than or equal to 50 ° so that the first inclined tube 41 has a sufficient inclination to ensure that no dust is deposited. Similarly, the angle between the second inclined tube 42 and the horizontal plane is greater than or equal to 50 °, so that the smoke dust in the second inclined tube 42 is not accumulated in the second inclined tube 42, but is deposited at the ash discharge valve 43 along the second inclined tube 42, and the ash accumulation in the first inclined tube 41 and the second inclined tube 42 is difficult to occur.

In this embodiment, in order to further collect dust in the smoke, the exhaust gas treatment system further includes a bag-type dust collector 7, and the bag-type dust collector 7 is communicated between the other end of the second inclined tube 42 and the induced draft fan 6, that is, the other end of the second inclined tube 42 is communicated with the induced draft fan 6 through the bag-type dust collector 7. The bag-type dust collector 7 is used for collecting dust, and the particulate matters of the gas discharged by the bag-type dust collector 4 can meet the requirement of 20mg/Nm³In order to ensure that the gas discharged from the chimney 5 meets the dedusting requirements.

Alternatively, as shown in fig. 2, the vertical incineration furnace 1 is of a jacket structure, and the vertical incineration furnace 1 includes an inner casing 11 and an outer casing 12. The outer shell 12 is sleeved outside the inner shell 11, and the inner shell 11 is located at the top end of the outer shell 12. The chamber formed by the inner casing 11 is a combustion chamber, and the material inlet 101 is provided in the inner casing 11 so that the exhaust gas, air and fuel entering the inner casing 11 can be combusted in the inner casing 11. The bottom end of the inner shell 11 is also provided with an exhaust port 111, so that smoke in the inner shell 11 can enter the outer shell 12 through the exhaust port 111. A smoke outlet 102 is provided at the bottom end of the housing 12.

With continued reference to fig. 2, the housing 12 includes a cylindrical section 121 and a conical section 122. The large diameter end of the conical section 122 is connected to the cylindrical section 121, and the two are the same in size. The cylindrical section 121 is sleeved outside the inner shell 11, the smoke outlet 102 is arranged at the small-diameter end of the conical section 122, and the side wall of the conical section 122 can guide the smoke so that the smoke can smoothly enter the smoke outlet 102.

In this embodiment, no castable or thermal insulation cotton is disposed on the inner shell 11, the temperature inside the inner shell 11 is maintained below 900 ℃, and the inner shell 11 is made of 310S stainless steel. Referring to fig. 2, the side wall of the outer shell 12 has a second air inlet 103, the second air inlet 103 is communicated with the blower 3, the blower 3 can introduce air into the outer shell 12 through the second air inlet 103, so that the outer shell 12 has a function of heat preservation and insulation of the inner shell 11, at this time, a space between the outer shell 12 and the inner shell 11 forms a jacket cooling cavity, cooling air is provided in the jacket cooling cavity, the cooling air in the outer shell 12 is mixed with high-temperature smoke dust to cool the smoke dust, and the temperature of the smoke dust at the smoke dust outlet 102 is controlled to be 180-220 ℃. The outer shell 12 is made of carbon steel and the temperature of the outer shell 12 is maintained below 60 ℃.

Optionally, in order to mix the cooling air and the smoke in the outer casing 12 more uniformly, as shown in fig. 2, the vertical incinerator 1 further includes a distributor 8, the distributor 8 is connected between the inner casing 11 and the outer casing 12, the distributor 8 extends along the circumferential direction of the inner casing 11, and a plurality of distribution holes 81 are opened on the distributor 8, so that the cooling air is more uniformly distributed after passing through the distributor 8. In some embodiments, continuing to refer to FIG. 2, the sparger 8 is angled such that cooling air passing through the sparger 8 is blown toward the central axis of the housing 12 to facilitate mixing with the flue dust exiting the exhaust port 111. Further, as shown in fig. 3, the plurality of distribution holes 81 are uniformly and alternately distributed to further improve the uniformity of the cooling air and the smoke.

The exhaust gas treatment system in this embodiment further includes a support assembly connected between the inner casing 11 and the outer casing 12 for supporting the inner casing 11. Further, as shown in fig. 4, the supporting component includes a plurality of flow deflectors 13 that are the heliciform and locate the outer wall of inner shell 11, and the one end of flow deflector 13 is connected in outer shell 12, and the other end is connected in inner shell 11, and flow deflector 13 all has the effect of supporting inner shell 11 and still has the effect of water conservancy diversion cooling wind for the cooling wind that gets into in outer shell 12 by outer shell 12 one side can be by flow deflector 13 along the circumference water conservancy diversion of outer shell 12, makes cooling wind 12 evenly distributed in outer shell 12.

Optionally, the side wall of the outer casing 12 is further provided with a flame detector 9, and the flame detector 9 is used for detecting whether the flame in the inner casing 11 is extinguished. The flame detector 9 can be set to 2-3 to improve the accuracy of detection. The side wall of the housing 12 is further provided with a plurality of detection instruments 10, and the detection instruments 10 are used for detecting the temperature, the pressure and the like of the housing 12.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An exhaust treatment system, comprising:

the vertical incinerator (1) is provided with a material inlet (101) at the top end and a smoke outlet (102) at the bottom end;

the combustor (2) is arranged at the top end of the vertical incinerator (1), the combustor (2) is provided with a fuel inlet (21), an exhaust gas inlet (22), a first air inlet (23) and a mixing outlet, and the mixing outlet is communicated with the material inlet (101);

a blower (3) which is communicated with the first air inlet (23);

the gravity ash remover (4) comprises a first inclined pipe (41), a second inclined pipe (42) and an ash discharge valve (43), one end of the first inclined pipe (41) is communicated with the smoke outlet (102), the other end of the first inclined pipe (41) is communicated with the ash discharge valve (43), and one end of the second inclined pipe (42) is communicated with the ash discharge valve (43);

the chimney (5) is communicated with the other end of the second inclined pipe (42);

and the induced draft fan (6) is communicated between the chimney (5) and the second inclined pipe (42).

2. An exhaust gas treatment system according to claim 1, characterized in that the angle between the first chute (41) and the horizontal is greater than or equal to 50 ° and/or the angle between the second chute (42) and the horizontal is greater than or equal to 50 °.

3. The waste gas treatment system of claim 1, further comprising a bag-type dust collector (7), wherein the bag-type dust collector (7) is communicated between the other end of the second inclined pipe (42) and the induced draft fan (6).

4. The waste gas treatment system of claim 1, wherein the vertical incinerator (1) is a jacket structure, the vertical incinerator (1) comprises an inner casing (11) and an outer casing (12), the outer casing (12) is sleeved outside the inner casing (11), the material inlet (101) is arranged on the inner casing (11), the bottom end of the inner casing (11) is further provided with a smoke exhaust port (111), and the smoke outlet (102) is arranged at the bottom end of the outer casing (12).

5. An exhaust gas treatment system according to claim 4, wherein the side wall of the housing (12) has a second air inlet (103), the second air inlet (103) being in communication with the blower (3).

6. An exhaust gas treatment system according to claim 4, wherein the vertical incinerator (1) further comprises a distributor (8), the distributor (8) is connected between the inner casing (11) and the outer casing (12), the distributor (8) extends along the circumferential direction of the inner casing (11), and a plurality of distribution holes (81) are opened on the distributor (8).

7. Exhaust gas treatment system according to claim 6, characterized in that a plurality of said distribution holes (81) are evenly and spaced apart.

8. The exhaust gas treatment system of claim 4, further comprising a support assembly connected between the inner shell (11) and the outer shell (12).

9. An exhaust gas treatment system according to claim 8, wherein the support assembly comprises a plurality of flow deflectors (13) spirally arranged on the outer wall of the inner casing (11), one end of each flow deflector (13) is connected to the outer casing (12), and the other end of each flow deflector is connected to the inner casing (11).

10. The exhaust gas treatment system of claim 4, wherein the outer casing (12) comprises a cylindrical section (121) and a conical section (122), a large diameter end of the conical section (122) is connected to the cylindrical section (121), the cylindrical section (121) is sleeved outside the inner casing (11), and the smoke outlet (102) is arranged at a small diameter end of the conical section (122).