Rotary kiln VOC (volatile organic compound) gas treatment system

Abstract

The utility model discloses a rotary kiln VOC (volatile organic compound) gas treatment system, which comprises a filter assembly, a heat recovery assembly and a secondary combustion furnace, the filter assembly comprises a filter tank, a filter cavity is formed in the filter tank, the filter tank is also provided with a gas inlet and a gas outlet, and the filter cavity is filled with a filter material; the heat recovery assembly comprises a waste heat furnace, a heat exchange cavity is formed in the waste heat furnace, a spiral heat exchange pipe is arranged in the heat exchange cavity, the first end of the heat exchange pipe is connected with the exhaust port, and the heat exchange cavity is further filled with a flowing medium; and a fuel inlet of the secondary combustion furnace is communicated with the second end of the heat exchange pipe. According to the technical scheme, the VOC gas treatment device has the beneficial effects that impurities in VOC gas can be filtered out through the arranged filtering assembly, waste heat in the VOC gas can be absorbed through the heat recovery assembly, and the filtered VOC gas can be combusted through the arranged secondary combustion furnace.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a rotary kiln VOC gas treatment system. Background Art

[0002] A rotary kiln is a rotary calcining kiln (commonly known as a rotary kiln). It is similar in appearance to a rotary bed, also called a rotary bed kiln, and belongs to the category of building materials equipment. Rotary kilns can be divided into cement kilns, metallurgical chemical kilns, and lime kilns according to the materials they process. A large amount of VOC gas is generated during the operation of the rotary kiln. If these gases are directly discharged into the atmosphere, it will not only cause environmental pollution, but also cause energy waste. Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides a rotary kiln VOC gas treatment system, which can perform secondary utilization of VOC gas and is more energy-saving and environmentally friendly.

[0004] A technical solution provided by the utility model is: a rotary kiln VOC gas treatment system, including a filter component, a heat recovery component and a secondary combustion furnace, the filter component includes a filter tank, a filter cavity is constructed in the filter tank, an air inlet and an exhaust port are also provided on the filter tank, and the filter cavity is filled with filter material; the heat recovery component includes a waste heat furnace, a heat exchange cavity is constructed in the waste heat furnace, a spiral heat exchange tube is provided in the heat exchange cavity, a first end of the heat exchange tube is connected to the exhaust port, and the heat exchange cavity is also filled with flowing medium; the fuel inlet of the secondary combustion furnace is connected to the second end of the heat exchange tube.

[0005] The beneficial effects of the above technical solution are: the provided filtering component can filter out impurities in the VOC gas, the heat recovery component can absorb waste heat in the VOC gas, and the provided secondary combustion furnace can burn the filtered VOC gas.

[0006] Furthermore, the filter material is activated carbon.

[0007] Furthermore, a liquid inlet is provided on the waste heat furnace corresponding to the bottom of the heat exchange cavity, and a liquid outlet is provided corresponding to the top of the heat exchange cavity. The medium enters the heat exchange cavity from the liquid inlet and flows out from the liquid outlet.

[0008] Furthermore, the secondary combustion furnace is a carbonization furnace, and a combustion chamber and a carbonization liner isolated from the combustion chamber are provided in the carbonization furnace, and the carbonization liner is located in the combustion chamber.

[0009] Furthermore, a plurality of flame spray guns are arranged at intervals on the inner wall of the combustion chamber, and the flame spray guns are arranged facing the carbonized liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0011] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0012] Reference numerals: filter tank 100 , exhaust port 110 , air inlet 120 , waste heat furnace 200 , heat exchange chamber 210 , liquid inlet 211 , liquid outlet 212 , heat exchange tube 220 , carbonization furnace 300 , flamethrower 310 , carbonization liner 320 . DETAILED DESCRIPTION

[0013] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0014] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0015] like Figure 1 As shown, this embodiment provides a rotary kiln VOC gas treatment system, including a filter component, a heat recovery component and a secondary combustion furnace, the filter component includes a filter tank 100, the filter tank 100 is configured with a filter cavity, the filter tank 100 is also provided with an air inlet 120 and an exhaust port 110, the filter cavity is filled with filter material; the heat recovery component includes a waste heat furnace 200, the waste heat furnace 200 is configured with a heat exchange cavity 210, the heat exchange cavity 210 is provided with a spiral heat exchange tube 220, the first end of the heat exchange tube 220 is connected to the exhaust port 110, and the heat exchange cavity 210 is also filled with flowing medium; the fuel inlet of the secondary combustion furnace is connected to the second end of the heat exchange tube 220.

[0016] When in use, the filter component can filter out impurities in the VOC gas, the heat recovery component can absorb waste heat in the VOC gas, and the secondary combustion furnace can burn the filtered VOC gas.

[0017] Furthermore, the filter material is activated carbon.

[0018] In order to ensure that the waste heat is recovered as much as possible, a liquid inlet 211 is provided on the waste heat furnace 200 corresponding to the bottom of the heat exchange chamber 210 , and a liquid outlet 212 is provided corresponding to the top of the heat exchange chamber 210 . The medium enters the heat exchange chamber 210 from the liquid inlet 211 and flows out from the liquid outlet 212 .

[0019] Furthermore, the secondary combustion furnace is a carbonization furnace 300, and a combustion chamber and a carbonization inner liner 320 isolated from the combustion chamber are provided in the carbonization furnace 300, and the carbonization inner liner 320 is located in the combustion chamber. Furthermore, a plurality of flamethrowers 310 are arranged at intervals on the inner wall of the combustion chamber, and the flamethrowers 310 are arranged directly opposite to the carbonization inner liner 320. The carbonization furnace 300 can carbonize fruit wood, and finally obtain charcoal that can be directly used.

[0020] In the description of this application, it should be understood that the terms in this application are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of this utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically limited.

[0021] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and the like 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 an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, systems and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A rotary kiln VOC gas treatment system, characterized in that: include: A filter assembly, the filter assembly comprising a filter tank (100), a filter cavity being constructed in the filter tank (100), an air inlet (120) and an air outlet (110) being provided on the filter tank (100), and the filter cavity being filled with filter material; A heat recovery component, the heat recovery component comprising a waste heat furnace (200), a heat exchange chamber (210) being configured in the waste heat furnace (200), a spiral heat exchange tube (220) being arranged in the heat exchange chamber (210), a first end of the heat exchange tube (220) being connected to the exhaust port (110), and the heat exchange chamber (210) being filled with a flowing medium; A secondary combustion furnace, wherein a fuel inlet of the secondary combustion furnace is connected to the second end of the heat exchange tube (220).

2. A rotary kiln VOC gas treatment system according to claim 1, characterized in that: The filter material is activated carbon.

3. A rotary kiln VOC gas treatment system according to claim 1, characterized in that: The waste heat furnace (200) is provided with a liquid inlet (211) corresponding to the bottom of the heat exchange chamber (210), and a liquid outlet (212) is provided corresponding to the top of the heat exchange chamber (210); the medium enters the heat exchange chamber (210) through the liquid inlet (211) and flows out from the liquid outlet (212).

4. A rotary kiln VOC gas treatment system according to claim 1, characterized in that: The secondary combustion furnace is a carbonization furnace (300), wherein a combustion chamber and a carbonization liner (320) isolated from the combustion chamber are provided in the carbonization furnace (300), and the carbonization liner (320) is located in the combustion chamber.

5. A rotary kiln VOC gas treatment system according to claim 4, characterized in that: A plurality of flame spray guns (310) are arranged at intervals on the inner wall of the combustion chamber, and the flame spray guns (310) are arranged facing the carbonized inner liner (320).

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