Waste gas combustion purification device

Abstract

The utility model provides a waste gas combustion purification device which comprises a spraying purification chamber, a preheating chamber and a combustion chamber which are sequentially connected in series. Heat exchange equipment is arranged in the preheating chamber, and waste gas subjected to spraying purification in the spraying purification chamber is heated by the heat exchange equipment and then is fed into the combustion chamber; the heat exchange equipment comprises end plates, a partition plate and a gas guide pipe, the partition plate is arranged between the two sets of end plates and forms a shell pass channel folded back and forth, the gas guide pipe penetrates through the end plates and the partition plate, and waste gas purified through spraying enters the combustion chamber through the gas guide pipe; tail gas generated in the combustion process of the combustion chamber exchanges heat with waste gas in the gas guide pipe through the shell pass channel. High-temperature tail gas generated in the combustion process of the combustion chamber exchanges heat with waste gas in the gas guide pipe, so that the temperature of the waste gas is increased, heat loss of the waste gas in the spraying purification process is made up, and the waste gas can be ignited more easily.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas combustion and purification technology, and in particular relates to a waste gas combustion and purification device. Background Technology

[0002] Waste gas usually refers to the gas generated during some production operations. In order to protect the environment, waste gas is treated. There are various ways to treat waste gas, including waste gas combustion purification. When purifying waste gas by combustion, waste gas combustion purification devices are used.

[0003] Currently, exhaust gas combustion purification devices use a spray purification method to initially filter the exhaust gas before it enters the combustion chamber, reducing the particulate matter content in the exhaust gas and preventing it from depositing and causing a decrease in combustion efficiency. However, this method results in a lower temperature of the exhaust gas before the purification process due to the spraying. The combustion process requires more heat to raise the exhaust gas to a combustible state, and more fuel is needed to make up for the heat demand. Utility Model Content

[0004] This invention provides a waste gas combustion purification device, which aims to solve the problem that the waste gas purified by spraying is at a low temperature before the purification process, and more heat needs to be invested in the combustion process to raise the waste gas to a combustible level.

[0005] This utility model is implemented as follows: a waste gas combustion purification device, comprising:

[0006] The system comprises a spray purification chamber, a preheating chamber, and a combustion chamber, which are connected in series. The preheating chamber is equipped with a heat exchange device, and the exhaust gas purified by spraying in the spray purification chamber is heated by the heat exchange device before being sent into the combustion chamber.

[0007] The heat exchange equipment includes end plates, partition plates, and air guide pipes. The partition plates are arranged between two sets of end plates and form a folded and reciprocating shell-side channel. The air guide pipes pass through the end plates and partition plates. The exhaust gas purified by spraying enters the combustion chamber through the air guide pipes. The exhaust gas generated during the combustion process in the combustion chamber exchanges heat with the exhaust gas in the air guide pipes through the shell-side channel.

[0008] Preferably, the preheating chamber is divided into a first region, a second region, and a third region by two sets of end plates. The first region and the third region are connected by an air duct. The dividing plate is located in the second region, and the second region is not connected to the first region and the third region.

[0009] Preferably, the second region is provided with an exhaust gas outlet and an exhaust gas inlet, and the exhaust gas inlet is connected to the exhaust gas outlet of the combustion chamber through a pipe.

[0010] Preferably, the preheating chamber is further provided with an exhaust gas inlet and an exhaust gas outlet, the exhaust gas inlet being connected to the spray purification chamber and the exhaust gas outlet being connected to the combustion chamber.

[0011] Preferably, the exhaust gas inlet and exhaust gas outlet are connected to the first and third zones of the preheating chamber, respectively.

[0012] Preferably, the spray purification chamber further includes a spray pipe disposed inside the spray purification chamber and a circulation pump disposed outside the spray purification chamber. The circulation pump is connected to the interior of the spray purification chamber and the spray pipe through a pipeline, and the circulation pump delivers the circulating liquid used for purification inside the spray purification chamber to the spray pipe.

[0013] Preferably, the spray purification chamber is further provided with an air inlet bend, which extends to below the liquid level of the circulating liquid stored inside the spray purification chamber.

[0014] Compared with the prior art, the embodiments of this application have the following main advantages:

[0015] The exhaust gas combustion purification device provided by this utility model forms a shell-side channel with a folding structure through a dividing plate set between two sets of end plates. The high-temperature exhaust gas generated during the combustion process in the combustion chamber is transported back to the shell-side channel through a pipeline. In the shell-side channel, the high-temperature exhaust gas exchanges heat with the exhaust gas in the gas guide pipe, which raises the temperature of the exhaust gas in the gas guide pipe, making it easier to ignite, and at the same time makes up for the heat loss of the exhaust gas during the spray purification process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a waste gas combustion purification device provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the spray purification chamber and preheating chamber of a waste gas combustion purification device provided by this utility model.

[0018] Figure 3 This is a schematic diagram of the preheating chamber structure of a waste gas combustion purification device provided by this utility model.

[0019] Figure 4 This is a schematic diagram of the spray purification chamber in a waste gas combustion purification device provided by this utility model.

[0020] Figure 5 This is a schematic diagram of the heat exchange equipment structure of a waste gas combustion purification device provided by this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Spray purification chamber; 110. Spray pipe; 120. Circulation pump; 130. Inlet bend; 200. Preheating chamber; 201. Exhaust gas outlet; 202. Exhaust gas inlet; 203. Exhaust gas inlet; 204. Exhaust gas outlet; 210. End plate; 230. Divider plate; 220. Air guide pipe; 300. Combustion chamber. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] This utility model embodiment provides a waste gas combustion purification device, such as... Figures 1-5 As shown, the waste gas combustion purification device includes:

[0026] The system comprises a spray purification chamber 100, a preheating chamber 200, and a combustion chamber 300, which are connected in series. The preheating chamber 200 is equipped with a heat exchange device. The exhaust gas purified by spraying in the spray purification chamber 100 is heated by the heat exchange device before being sent into the combustion chamber 300.

[0027] The heat exchange equipment includes an end plate 210, a dividing plate 230, and a gas guide pipe 220. The dividing plate 230 is disposed between two sets of end plates 210 and forms a folded reciprocating shell-side channel. The preheating chamber 200 is divided into a first region, a second region, and a third region by the two sets of end plates 210. The dividing plate 230 is disposed in the second region, which is not connected to the first and third regions. The gas guide pipe 220 passes through the end plate 210 and the dividing plate 230. The first and third regions are connected through the gas guide pipe 220. After being sprayed and purified, the exhaust gas passes through the second region through the gas guide pipe 220. The exhaust gas inside the gas guide pipe 220 exchanges heat with the shell-side channel located in the second region. The exhaust gas passing through the gas guide pipe 220 enters the combustion chamber 300 for combustion.

[0028] The shell-side passage mainly utilizes the fact that the length of the dividing plate 230 is less than that of the end plate 210. Adjacent dividing plates 230 are distributed at intervals with different inner walls of the preheating chamber 200, allowing the airflow to bend and run with the help of the dividing plates 230.

[0029] In this embodiment, the combustion chamber 300 is a prior art device, which mainly produces carbon dioxide and water by mixing the injected combustion-supporting gas and the fuel gas with the exhaust gas. The high-temperature exhaust gas generated during the combustion process in the combustion chamber 300 is transported back to the shell-side channel through a pipeline. In the shell-side channel, the high-temperature exhaust gas exchanges heat with the exhaust gas in the gas guide pipe 220, which raises the temperature of the exhaust gas in the gas guide pipe 220 so that it is easier to ignite, while also compensating for the heat loss of the exhaust gas during the spray purification process.

[0030] In this embodiment, the spray purification chamber 100 includes a spray pipe 110 disposed inside the spray purification chamber 100 and a circulation pump 120 disposed outside the spray purification chamber 100. The circulation pump 120 is connected to the inside of the spray purification chamber 100 and the spray pipe 110 through a pipeline. The circulation pump 120 transports the circulating liquid used for purification inside the spray purification chamber 100 to the spray pipe 110. A filter assembly is also provided on the pipeline connecting the circulation pump 120 and the spray pipe 110. The spray purification chamber 100 uses existing technology to purify the spray liquid and the corresponding principle. It mainly uses the spray method to recover particles and impurities in the exhaust gas, so as to avoid particles and impurities from entering the combustion chamber 300 and sintering in the combustion chamber 300, which would affect the combustion efficiency of the combustion chamber 300.

[0031] In a preferred embodiment of this invention, the second region is provided with an exhaust gas outlet 201 and an exhaust gas inlet 203, the exhaust gas inlet 203 being connected to the exhaust gas outlet of the combustion chamber 300 via a pipe; the preheating chamber 200 is also provided with an exhaust gas inlet 202 and an exhaust gas outlet 204, the exhaust gas inlet 202 being connected to the spray purification chamber 100, and the exhaust gas outlet 204 being connected to the combustion chamber 300;

[0032] In this embodiment, the high-temperature exhaust gas from the exhaust outlet enters the second region through the exhaust gas inlet 203 and moves back and forth along the shell-side channel located in the second region to increase the contact time for heat exchange with the exhaust gas in the air guide pipe 220. The end of the shell-side channel is connected to the exhaust gas outlet 201, which discharges the exhaust gas that has completed heat exchange to the outside. The exhaust gas outlet 201 can also be connected to subsequent exhaust gas deep treatment equipment for further purification treatment to reduce carbon dioxide emissions.

[0033] The exhaust gas inlet 202 and the exhaust gas outlet 204 are connected to the first area and the third area respectively. The exhaust gas inlet 202 also serves as a connecting channel between the spray purification chamber 100 and the preheating chamber 200, introducing the exhaust gas that has completed the spray purification into the preheating chamber 200.

[0034] In a further preferred embodiment of the present invention, the spray purification chamber 100 is further provided with an air inlet bend 130, which extends to below the liquid surface of the circulating liquid stored inside the spray purification chamber 100.

[0035] In this embodiment, the spray purification chamber 100 is provided with an exhaust gas treatment inlet. With the help of the air inlet bend 130, the exhaust gas will enter below the spray liquid surface at the bottom of the spray purification chamber 100 to further improve the purification effect.

[0036] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An exhaust gas combustion purification device characterized by comprising: The application relates to a waste gas treatment device, which comprises a spray cleaning chamber (100), a preheating chamber (200) and a combustion chamber (300) which are connected in series; the preheating chamber (200) is internally provided with heat exchange equipment; waste gas cleaned by the spray cleaning chamber (100) is heated by the heat exchange equipment and then sent into the combustion chamber (300). The heat exchange equipment comprises end plates (210), a partition plate (230) and a gas guide pipe (220), the partition plate (230) is arranged between two groups of end plates (210) and forms a shell channel which folds back and forth, the gas guide pipe (220) penetrates through the end plates (210) and the partition plate (230), waste gas cleaned by the spray cleaning chamber (100) enters the combustion chamber (300) through the gas guide pipe (220), and tail gas generated in the combustion process of the combustion chamber (300) exchanges heat with the waste gas in the gas guide pipe (220) through the shell channel. The preheating chamber (200) is divided into a first region, a second region and a third region by two groups of end plates (210), the first region and the third region are communicated through the gas guide pipe (220), the partition plate (230) is arranged in the second region, and the second region is not communicated with the first region and the third region.

2. An exhaust gas combustion purifying apparatus as set forth in claim 1, characterized by An exhaust gas outlet (201) and an exhaust gas inlet (203) are arranged on the second region, the exhaust gas inlet (203) is communicated with an exhaust gas discharge port of the combustion chamber (300) through a pipeline.

3. An exhaust gas combustion purifying apparatus according to claim 2, wherein The preheating chamber (200) is further provided with a waste gas inlet (202) and a waste gas outlet (204), the waste gas inlet (202) is communicated with the spray cleaning chamber (100), and the waste gas outlet (204) is communicated with the combustion chamber (300).

4. An exhaust gas combustion purifying apparatus according to claim 3, wherein The waste gas inlet (202) and the waste gas outlet (204) are respectively communicated with the first region and the third region in the preheating chamber (200).

5. An exhaust gas combustion purifying apparatus as set forth in claim 4, characterized by The spray cleaning chamber (100) further comprises a spray pipe (110) arranged in the interior of the spray cleaning chamber (100) and a circulating pump (120) arranged outside the spray cleaning chamber (100), the circulating pump (120) is communicated with the interior of the spray cleaning chamber (100) and the spray pipe (110) through pipelines, and the circulating pump (120) delivers circulating liquid used for cleaning in the interior of the spray cleaning chamber (100) to the spray pipe (110).

6. An exhaust gas combustion purifying apparatus as set forth in claim 5, characterized by The spray cleaning chamber (100) is further provided with an air inlet elbow (130), the air inlet elbow (130) extends to below the liquid surface of the circulating liquid stored in the interior of the spray cleaning chamber (100).

7. An exhaust gas combustion purifying apparatus according to claim 6, wherein ​

Images