CN-122015103-A - Energy-saving device and treatment method suitable for large intermittent VOC gas incineration

CN122015103ACN 122015103 ACN122015103 ACN 122015103ACN-122015103-A

Abstract

The application discloses an energy-saving device and a treatment method suitable for burning large-batch VOC gas, and belongs to the technical field of waste gas treatment. The device includes a first housing and a second housing. The first shell is provided with a first cavity, a first exhaust gas inlet and a first air inlet, wherein the first exhaust gas inlet is communicated with the first cavity, the first exhaust gas inlet is configured to convey exhaust gas into the first cavity, the first air inlet is configured to convey air into the first cavity, the second shell is arranged above the first shell in the height direction and is provided with a second cavity and a second exhaust gas inlet communicated with the second cavity, the second cavity is communicated with the first cavity, the second exhaust gas inlet is configured to convey exhaust gas into the second cavity, and the flow rate of exhaust gas flowing through the second exhaust gas inlet is larger than that of exhaust gas flowing through the first exhaust gas inlet. The device can simultaneously meet the treatment requirements of small-flow waste gas and large-flow waste gas.

Inventors

MAO ANYUAN
LI YU
HE GUIJIE
ZHANG TAO
LIU DONG
PAN SILIN

Assignees

中国船舶集团有限公司第七一一研究所
上海齐耀热能工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (14)

1. An energy efficient device for high intermittent VOC gas incineration comprising: A first housing provided with a first cavity, and a first exhaust gas inlet and a first air inlet in communication with the first cavity, the first exhaust gas inlet configured to deliver exhaust gas into the first cavity, the first air inlet configured to deliver air into the first cavity; The second shell is arranged above the first shell in the height direction and is provided with a second cavity and a second exhaust gas inlet communicated with the second cavity, the second cavity is communicated with the first cavity, and the second exhaust gas inlet is configured to convey exhaust gas into the second cavity; Wherein the flow rate of the exhaust gas flowing through the second exhaust gas inlet is greater than the flow rate of the exhaust gas flowing through the first exhaust gas inlet.
2. The energy efficient device for high volume VOC gas incineration according to claim 1, wherein the volume of the second cavity is greater than the volume of the first cavity.
3. The energy efficient device for high volume VOC gas incineration according to claim 1, wherein the second housing is further provided with a first fuel inlet configured to deliver fuel into the second cavity.
4. The energy-saving device for the incineration of large batch amount of VOC gas according to claim 3, the energy-saving device suitable for burning the large batch amount of VOC gas is characterized by further comprising: The first enclosure part is positioned outside the first shell and is enclosed with the first shell to form a first waste gas distribution cavity and a first air distribution cavity, the first enclosure part is provided with a first waste gas interface and a first air interface, the first waste gas interface and the first waste gas inlet are communicated with the first waste gas distribution cavity, the first air interface and the first air inlet are communicated with the first air distribution cavity, and/or, The second enclosure part is positioned outside the second shell, and is enclosed with the second shell to form a second waste gas distribution cavity, the second enclosure part is provided with a second waste gas interface, and the second waste gas interface and the second waste gas inlet are both communicated with the second waste gas distribution cavity; Wherein the second exhaust gas interface is provided with a first fuel interface, the first fuel interface is communicated with the second exhaust gas distribution cavity through the second exhaust gas interface, and/or the second enclosure is provided with a first fuel interface, and the first fuel interface is communicated with the second exhaust gas distribution cavity.
5. An energy efficient device for high volume VOC gas incineration according to claim 3, characterised in that the first air inlet is arranged above the first exhaust gas inlet in the height direction.
6. The energy efficient device for high batch VOC gas incineration according to claim 5, further comprising a burner, at least a partial area of the burner being disposed within the first housing; Wherein, in the direction of height, first exhaust gas inlet is close to the bottom of combustor sets up, first air inlet is close to the middle part of combustor sets up, second exhaust gas inlet with first fuel inlet all is close to the top of combustor sets up.
7. The energy saving device for high intermittent VOC gas incineration according to claim 1, wherein the number of the first exhaust gas inlets is one or more, at least one of the first exhaust gas inlets is arranged at intervals along the circumferential direction of the first housing, and/or, The number of the first air inlets is one or more, at least one of the first air inlets is arranged at intervals along the circumferential direction of the first housing, and/or, The number of the second exhaust gas inlets is one or more, and at least one second exhaust gas inlet is arranged at intervals along the circumferential direction of the second shell.
8. The energy saving device for high intermittent VOC gas incineration according to claim 1, wherein at least one of the central axis of the first exhaust gas inlet and the central axis of the first air inlet does not intersect with the central axis of the first housing, and/or, The central axis of the second exhaust gas inlet is not intersected with the central axis of the second shell.
9. The energy-saving device for the incineration of large batch amount of VOC gas according to claim 1, the energy-saving device suitable for burning the large batch amount of VOC gas is characterized by further comprising: the first turbulence pieces are arranged on the inner wall surface of the first cavity at intervals and/or, The second turbulence pieces are arranged on the inner wall surface of the second cavity at intervals.
10. The energy saving device for high batch VOC gas incineration according to claim 1, further comprising a third housing provided on a side of the second housing away from the first housing in the height direction, the third housing being provided with a third cavity and a second air inlet communicating with the third cavity, the third cavity communicating with the second cavity, the second air inlet being configured to deliver air into the third cavity; Wherein the number of the second air inlets is one or more, at least one of the second air inlets is arranged at intervals along the circumferential direction of the third housing, and/or, The central axis of the second air inlet is not intersected with the central axis of the third shell, and/or, The energy-saving device suitable for burning large batch of VOC gas further comprises a plurality of third turbulence pieces, and the third turbulence pieces are arranged on the inner wall surface of the third cavity at intervals.
11. The energy efficient device for high batch VOC gas incineration according to claim 10, further comprising a third enclosure located outside the third housing and enclosing with the third housing to form a second air distribution chamber, the third enclosure being provided with a second air interface, both the second air interface and the second air inlet being in communication with the second air distribution chamber.
12. A treatment method, characterized by being applied to the energy-saving device for large-batch-amount VOC gas incineration according to any one of claims 1 to 11, comprising: when the flow of the exhaust gas is smaller than or equal to a first preset value, the exhaust gas enters the first cavity through a first exhaust gas inlet; when the flow rate of the exhaust gas is greater than a first preset value, the exhaust gas enters the second cavity through the second exhaust gas inlet.
13. The method of claim 12, wherein the second housing is further provided with a first fuel inlet through which fuel is delivered into the second chamber when the flow rate of the exhaust gas is greater than a first preset value and the concentration of combustible in the exhaust gas is less than a second preset value.
14. A process according to claim 12, wherein air is fed into the first chamber through the first air inlet to mix exhaust gases and air in the first chamber, and/or, The energy-saving device suitable for large-batch VOC gas incineration further comprises a third shell, wherein the third shell is provided with a third cavity and a second air inlet communicated with the third cavity, and air is conveyed into the third cavity through the second air inlet so as to be mixed with unburned components generated in the first cavity and/or the second cavity and generate combustion reaction.

Description

Energy-saving device and treatment method suitable for large intermittent VOC gas incineration Technical Field The application relates to the technical field of waste gas treatment, in particular to an energy-saving device and a treatment method suitable for large-batch VOC gas incineration. Background Volatile organic compound (Volatile Organic Compounds, hereinafter referred to as VOC) waste gas is a common industrial waste gas, and constitutes a serious threat to the environment and human health. The VOC exhaust gas treatment technology mainly includes an adsorption method, an absorption method, an incineration method, and the like, and among them, incineration treatment of VOC exhaust gas is one of the most effective and widely used technologies. However, in a practical industrial scenario, intermittently discharged exhaust gases with a large volumetric flow rate are generated. When the intermittently discharged large-flow exhaust gas suddenly flows in, the exhaust gas treatment device cannot cope with the sudden inflow, so that the exhaust gas cannot be sufficiently treated, and serious environmental pollution is caused. Disclosure of Invention The embodiment of the application provides an energy-saving device suitable for burning large-batch-amount VOC gas, which can simultaneously meet the treatment requirements of small-flow waste gas and large-flow waste gas. It is a further object of the application to provide a method of treatment. In order to achieve the above object, according to a first aspect of the present application, there is provided an energy-saving type apparatus suitable for incineration of a large batch amount of VOC gas, comprising: A first housing provided with a first cavity, and a first exhaust gas inlet and a first air inlet in communication with the first cavity, the first exhaust gas inlet configured to deliver exhaust gas into the first cavity, the first air inlet configured to deliver air into the first cavity; The second shell is arranged above the first shell in the height direction and is provided with a second cavity and a second exhaust gas inlet communicated with the second cavity, the second cavity is communicated with the first cavity, and the second exhaust gas inlet is configured to convey exhaust gas into the second cavity; Wherein the flow rate of the exhaust gas flowing through the second exhaust gas inlet is greater than the flow rate of the exhaust gas flowing through the first exhaust gas inlet. Optionally, the volume of the second cavity is greater than the volume of the first cavity. Optionally, the second housing is further provided with a first fuel inlet configured to deliver fuel into the second cavity. Optionally, the energy-saving device suitable for burning large batch amount of VOC gas further comprises: The first enclosure part is positioned outside the first shell and is enclosed with the first shell to form a first waste gas distribution cavity and a first air distribution cavity, the first enclosure part is provided with a first waste gas interface and a first air interface, the first waste gas interface and the first waste gas inlet are communicated with the first waste gas distribution cavity, the first air interface and the first air inlet are communicated with the first air distribution cavity, and/or, The second enclosure part is positioned outside the second shell, and is enclosed with the second shell to form a second waste gas distribution cavity, the second enclosure part is provided with a second waste gas interface, and the second waste gas interface and the second waste gas inlet are both communicated with the second waste gas distribution cavity; Wherein the second exhaust gas interface is provided with a first fuel interface, the first fuel interface is communicated with the second exhaust gas distribution cavity through the second exhaust gas interface, and/or the second enclosure is provided with a first fuel interface, and the first fuel interface is communicated with the second exhaust gas distribution cavity. Optionally, the first air inlet is disposed above the first exhaust gas inlet in the height direction. Optionally, the energy-saving device suitable for burning large intermittent amounts of VOC gas further comprises a burner, at least part of the area of which is disposed within the first housing; Wherein, in the direction of height, first exhaust gas inlet is close to the bottom of combustor sets up, first air inlet is close to the middle part of combustor sets up, second exhaust gas inlet with first fuel inlet all is close to the top of combustor sets up. Optionally, the number of the first exhaust gas inlets is one or more, at least one of the first exhaust gas inlets is arranged at intervals along the circumferential direction of the first housing, and/or, The number of the first air inlets is one or more, at least one of the first air inlets is arranged at intervals along the circumferential direction of the first ho