Purging pipeline for RTO lower chamber body and RTO equipment

Abstract

The utility model discloses a purging pipeline for an RTO lower chamber body and RTO equipment. The purging pipeline comprises an air inlet pipe part, a first air outlet pipe part and a second air outlet pipe part. The air inlet pipe part is connected with a purging air source; the first gas outlet pipe part communicates with the gas inlet pipe part, and the first gas outlet pipe part is used for being arranged at the bottom in the lower chamber body and blowing waste gas at the bottom of the lower chamber body upwards; the second gas outlet pipe part is communicated with the gas inlet pipe part, and the second gas outlet pipe part is arranged at the middle upper part in the lower chamber body and continuously upwards purges waste gas at the middle upper part of the lower chamber body and waste gas purged by the first gas outlet pipe part from the bottom of the lower chamber body. The RTO equipment comprises a purging pipeline. The gas outlet pipes are respectively arranged at the bottom and the middle upper part of the lower chamber body to purge residual waste gas in the lower chamber body, and the waste gas purged from the bottom of the lower chamber body can be continuously purged to the upper chamber body under the action of the second gas outlet pipe part, so that the gas flow short circuit phenomenon is avoided, and the service life of the device is prolonged. And due to the structural design of the double air outlet pipes, purging is more thorough.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to a purge pipeline for an RTO lower chamber body and an RTO equipment. Background Art

[0002] There are many methods for treating organic waste gas, such as adsorption, absorption, combustion, etc. For organic waste gas with high concentration and large air volume, the thermal storage catalytic combustion method (RTO for short) is currently widely used for treatment. RTO is a highly efficient and purified organic waste gas treatment equipment. The principle of the RTO equipment is to heat the organic waste gas to above 760 degrees Celsius so that the VOC in the waste gas is oxidized and decomposed into carbon dioxide and water. The high-temperature gas generated by oxidation flows through a special ceramic thermal storage body. The ceramic body is heated up and "heat is stored", and this "heat storage" is used to preheat the subsequent organic waste gas.

[0003] The three-chamber RTO has three lower chambers, each of which is connected to the upper chamber. Each lower chamber has two lift valves, which are connected to the air inlet and outlet pipes respectively. The air inlet and outlet functions are realized by opening and closing the lift valves. Each lower chamber takes turns to assume the air inlet, outlet and purge functions.

[0004] Specifically, the air inlet valve of the lower chamber body A is open and the air outlet valve is closed; the air inlet valve of the lower chamber body B is closed and the air outlet valve is open; the air inlet valve of the lower chamber body C is closed and the air outlet valve is closed. The lower chamber body A assumes the air inlet function, and the exhaust gas enters from the air inlet valve of the lower chamber body A, passes through the pores on the heat storage bricks, and completes heat exchange with the heat storage bricks (the heat storage bricks cool down, and the exhaust gas heats up). After entering the upper chamber body to complete catalytic combustion, the clean high-temperature exhaust gas exchanges heat through the pores of the heat storage bricks (the heat storage bricks heat up, and the exhaust gas cools down). The lower chamber body B assumes the air outlet function, and the clean gas is discharged from the RTO furnace through the air outlet valve of the lower chamber body B to complete the purification. Since the lower chamber body C assumed the duties of the lower chamber body A in the previous round of treatment (that is, the air inlet valve is open and the air outlet valve is closed), it assumes the purge function in this round of treatment, so that the exhaust gas enters the incinerator from this chamber body. When the lower chamber body C completes the air intake function once, the two valves of the lower chamber body C are closed, and the residual exhaust gas is still in the lower chamber body C. It is necessary to blow the residual exhaust gas in the lower chamber body C into the upper chamber body with clean fresh air. The gas introduced from the outside is blown into the lower chamber body C through the purge pipeline, and the residual exhaust gas in the lower chamber body is blown to the upper chamber body to complete the catalytic combustion treatment.

[0005] At present, only one purge pipeline is set in the lower chamber body, and an air outlet is set on the purge pipeline, and fresh air is blown into the lower chamber body through the air outlet by a fan. On the one hand, since the structure of the lower chamber body is usually square and the volume of the chamber body is large, it is easy to cause gas short circuit during purge. On the other hand, it is difficult to purge all the waste gas remaining in every corner of the lower chamber body through one purge pipeline and one air outlet. When the chamber body is performing the air outlet work, the untreated waste gas remaining in the chamber body is directly discharged into the detection environment, which will cause the emission index to fail to meet the standard, and the direct discharge of untreated waste gas will cause serious environmental accidents. Utility Model Content

[0006] The utility model aims at overcoming at least one of the above problems and proposes a purge pipeline for the lower chamber of an RTO and an RTO device.

[0007] The technical solution adopted by the utility model is as follows:

[0008] The present application provides a purge pipeline for a lower chamber body of an RTO, which is used to be arranged on the lower chamber body of the RTO, wherein the purge pipeline includes an air inlet pipe portion, a first air outlet pipe portion, and a second air outlet pipe portion;

[0009] The air inlet pipe portion is used to connect to a purge air source;

[0010] The first air outlet pipe portion is connected to the air inlet pipe portion, and the first air outlet pipe portion is used to be arranged at the bottom position in the lower chamber body and to blow the exhaust gas at the bottom of the lower chamber body upward;

[0011] The second air outlet pipe portion is connected to the air inlet pipe portion, and the second air outlet pipe portion is used to be set in the middle and upper position of the lower chamber body, and continues to sweep upward the exhaust gas in the middle and upper part of the lower chamber body and the exhaust gas blown up from the bottom of the lower chamber body by the first air outlet pipe portion.

[0012] By arranging air outlet pipes at the bottom and the upper middle part of the lower chamber body respectively to blow out the residual exhaust gas inside the lower chamber body, and under the action of the second air outlet pipe part, the exhaust gas blown up from the bottom of the lower chamber body can continue to be blown to the upper chamber body, thereby avoiding the air flow short-circuit phenomenon. The structural design of the double air outlet pipe makes the blowing more thorough and can reduce the residual exhaust gas in the lower chamber body.

[0013] Furthermore, the first air outlet pipe portion and the second air outlet pipe portion are respectively arranged horizontally.

[0014] In actual use, the lower chamber of the RTO is also arranged horizontally.

[0015] Furthermore, the first air outlet pipe portion has a plurality of first air outlet holes arranged at intervals, and the air outlet direction of the first air outlet holes is toward the bottom wall of the lower chamber body;

[0016] The second air outlet pipe portion has a plurality of second air outlet holes arranged at intervals, and the air outlet directions of the second air outlet holes are toward a side away from the bottom wall of the lower chamber body.

[0017] Furthermore, the multiple first air outlet holes located in the first air outlet pipe portion are arranged in two rows, and the intersection points of the axes of the two rows of the first air outlet holes and the outer wall of the first air outlet pipe portion are both located below the horizontal plane where the axis of the first air outlet pipe portion is located, and the two rows of the first air outlet holes are respectively located on both sides of the vertical plane passing through the axis of the first air outlet pipe portion.

[0018] Furthermore, the angle between the axis of the first air outlet and the vertical direction is between 0° and 75°.

[0019] Furthermore, the second air outlet pipe parts have two parts, and the two second air outlet pipe parts are respectively located on both sides of the axis of the air inlet pipe part;

[0020] The second air outlet holes of the two second air outlet pipe parts are respectively located above the horizontal plane where the axes of the two second air outlet pipe parts are located.

[0021] Furthermore, the air outlet directions of the second air outlet holes of the two second air outlet pipe parts are respectively toward a side away from the air inlet pipe part.

[0022] The outlet direction of the first air outlet is inclined downward, so that the exhaust gas at the bottom of the lower chamber body touches the bottom and then flows upward. The outlet direction of the second air outlet is upward or inclined upward, so that the exhaust gas along the upper and middle part of the lower chamber body and the exhaust gas blown up from the bottom continue to flow upward. The first air outlet and the second air outlet work in relay with each other, which can enhance the blowing force while blowing thoroughly.

[0023] Furthermore, the purge pipeline also includes a connecting pipe portion, and the air inlet pipe portion, the connecting pipe portion and the first air outlet pipe portion are connected in sequence and arranged in a Z-shaped structure.

[0024] The present application also provides an RTO device, comprising a lower chamber body and a purge pipeline arranged on the lower chamber body;

[0025] The purge pipeline is the purge pipeline for the lower chamber of the RTO described above;

[0026] The first air outlet pipe part and the second air outlet pipe part of the purge pipeline are respectively located inside the lower chamber body;

[0027] The air inlet pipe portion of the purge pipeline is penetrated through the body wall of the lower chamber body.

[0028] The RTO equipment provided by the present application allows the exhaust gas that originally remained in the dead zone of the lower chamber body and could not be purged to the upper chamber body for treatment to be lifted to the upper chamber body for treatment under the purging action of the purging pipeline. This ensures that when the lower chamber body performs the exhaust function in the next round of work, the untreated exhaust gas remaining in the dead corner of the lower chamber body will not flow out of the RTO equipment, resulting in the exhaust gas treatment effect not meeting the standard. That is, by setting up the purging pipeline, the purging of the RTO equipment is more thorough, and the exhaust gas treatment effect is also better.

[0029] Furthermore, the axis of the first air outlet pipe portion is arranged parallel to the bottom wall of the lower chamber body;

[0030] The middle part of the lower chamber body is provided with an upwardly facing wedge-shaped flow guiding surface, and the axis of the second air outlet pipe portion is arranged parallel to the wedge-shaped flow guiding surface.

[0031] Furthermore, it also includes an upper chamber body connected to the lower chamber body, and a purge pipeline purges the exhaust gas in the lower chamber body to the upper chamber body so as to perform oxidation combustion treatment on the exhaust gas.

[0032] Furthermore, the two ends of the first air outlet pipe part and the second air outlet pipe part are respectively arranged to the opposite side walls of the lower chamber body, and the two ends of the first air outlet pipe part and the second air outlet pipe part are respectively provided with the first air outlet hole and the second air hole. Such an arrangement enables every corner of the lower chamber body to be purged.

[0033] The beneficial effects of the utility model are:

[0034] (1) The exhaust gas remaining in the lower chamber body is purged by arranging exhaust pipes at the bottom and the upper middle part of the lower chamber body, and the exhaust gas purged from the bottom of the lower chamber body can continue to be purged to the upper chamber body under the action of the second exhaust pipe part, thereby avoiding the short circuit of the air flow. The structural design of the double exhaust pipe makes the purging more thorough, which can reduce the exhaust gas residue in the lower chamber body.

[0035] (2) The outlet direction of the first air outlet is tilted downward, so that the exhaust gas at the bottom of the lower chamber body touches the bottom and then flows upward. The outlet direction of the second air outlet is upward or tilted upward, so that the exhaust gas along the upper middle part of the lower chamber body and the exhaust gas blown up from the bottom continue to flow upward. The first air outlet and the second air outlet work in relay with each other, which can improve the blowing force while blowing thoroughly.

[0036] (3) The RTO equipment provided by the present application allows the waste gas that originally remained in the dead zone of the lower chamber body and could not be purged to the upper chamber body for treatment to be lifted to the upper chamber body for treatment under the purge action of the purge pipeline. This ensures that when the lower chamber body performs the gas outlet function in the next round of work, the untreated waste gas remaining in the dead corner of the lower chamber body will not flow out of the RTO equipment, resulting in a waste gas treatment effect that does not meet the standards. That is, by setting up the purge pipeline, the purging of the RTO equipment is more thorough, and the waste gas treatment effect is also better. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the axial structure of the purge pipeline of the embodiment of the utility model;

[0038] Figure 2 This is a schematic diagram of the installation structure of the purge pipeline in the lower chamber of the RTO equipment according to the embodiment of the utility model;

[0039] Figure 3 It is a schematic diagram of the airflow direction in the lower chamber of the RTO equipment when the purge pipeline is purged according to an embodiment of the utility model.

[0040] The reference numerals in the figures are:

[0041] 10. Inlet pipe; 20. First outlet pipe; 210. First outlet hole; 30. Second outlet pipe; 310. Second outlet hole; 40. Connecting pipe; 100. Purge pipeline; 200. Lower chamber body; 201. Wedge-shaped guide surface. DETAILED DESCRIPTION

[0042] The utility model is described in detail below in conjunction with the accompanying drawings.

[0043] Example 1

[0044] like Figure 1 to Figure 3 As shown, the present application provides a purge pipeline for the lower chamber body of the RTO, which is used to be arranged on the lower chamber body 200 of the RTO, and the purge pipeline 100 includes an air inlet pipe part 10, a first air outlet pipe part 20 and a second air outlet pipe part 30;

[0045] The air inlet pipe portion 10 is used to connect to a purge air source;

[0046] The first air outlet pipe portion 20 is connected to the air inlet pipe portion 10, and the first air outlet pipe portion 20 is used to be arranged at the bottom position in the lower chamber body 200, and to blow the exhaust gas at the bottom of the lower chamber body 200 upward;

[0047] The second air outlet pipe portion 30 is connected to the air inlet pipe portion 10 and is used to be set in the middle and upper position of the lower chamber body 200, and to continue to sweep upward the exhaust gas in the middle and upper part of the lower chamber body 200 and the exhaust gas swept up from the bottom of the lower chamber body 200 by the first air outlet pipe portion 20.

[0048] By arranging air outlet pipes at the bottom and the upper middle part of the lower chamber body 200 respectively, the residual exhaust gas inside the lower chamber body 200 is purged, and under the action of the second air outlet pipe part 30, the exhaust gas blown up from the bottom of the lower chamber body 200 can continue to be blown to the upper chamber body, thereby avoiding the air flow short-circuiting phenomenon. The structural design of the double air outlet pipe makes the purging more thorough, which can reduce the residual exhaust gas in the lower chamber body 200.

[0049] In this embodiment, the first air outlet pipe portion 20 and the second air outlet pipe portion 30 are respectively arranged horizontally.

[0050] In actual use, the lower chamber body 200 of the RTO is also arranged horizontally.

[0051] In this embodiment, the first air outlet pipe portion 20 has a plurality of first air outlet holes 210 arranged at intervals, and the air outlet direction of the first air outlet holes 210 is toward the bottom wall of the lower chamber body 200;

[0052] The second air outlet pipe portion 30 has a plurality of second air outlet holes 310 arranged at intervals, and the air outlet direction of the second air outlet holes 310 is toward a side away from the bottom wall of the lower chamber body 200 .

[0053] In this embodiment, the multiple first air outlet holes 210 located in the first air outlet pipe portion 20 are arranged in two rows, and the intersection points of the axes of the two rows of first air outlet holes 210 and the outer wall of the first air outlet pipe portion 20 are both located below the horizontal plane where the axis of the first air outlet pipe portion 20 is located, and the two rows of first air outlet holes 210 are respectively located on both sides of the vertical plane passing through the axis of the first air outlet pipe portion 20.

[0054] In this embodiment, the angle between the axis of the first air outlet 210 and the vertical direction is between 15° and 65°, and specifically may be 45°.

[0055] In this embodiment, there are two second air outlet pipe portions 30, and the two second air outlet pipe portions 30 are respectively located on both sides of the axis of the air inlet pipe portion 10;

[0056] The second air outlet holes 310 of the two second air outlet pipe portions 30 are respectively located above the horizontal plane where the axes of the two second air outlet pipe portions 30 are located.

[0057] In this embodiment, the two second air outlet pipe portions 30 are disposed on the same horizontal line.

[0058] In this embodiment, the second air outlet holes 310 of the two second air outlet pipe portions 30 respectively emit air in directions toward a side away from the air inlet pipe portion 10 .

[0059] The air outlet direction of the first air outlet 210 is inclined downward, so that the exhaust gas at the bottom of the lower chamber body 200 touches the bottom and then flows upward. The air outlet direction of the second air outlet 310 is upward or inclined upward, so that the exhaust gas along the upper and middle part of the lower chamber body 200 and the exhaust gas blown up from the bottom continue to flow upward. The first air outlet 210 and the second air outlet 310 work in relay with each other, which can enhance the blowing force while blowing thoroughly.

[0060] In this embodiment, the purge pipeline 100 further includes a connecting pipe portion 40 , and the air inlet pipe portion 10 , the connecting pipe portion 40 and the first air outlet pipe portion 20 are sequentially connected and arranged in a Z-shaped structure.

[0061] like Figure 2 As shown, the present application also provides an RTO device, including a lower chamber body 200 and a purge pipeline 100 disposed on the lower chamber body 200;

[0062] The purge pipeline 100 is a purge pipeline for the lower chamber of the RTO as described above;

[0063] The first air outlet pipe portion 20 and the second air outlet pipe portion 30 of the purge pipeline 100 are respectively located inside the lower chamber body 200;

[0064] The air inlet pipe portion 10 of the purge pipeline 100 is penetrated through the body wall of the lower chamber body 200 .

[0065] The RTO device provided by the present application allows the waste gas that originally remained in the dead zone of the lower chamber body and could not be purged to the upper chamber body for treatment to be lifted to the upper chamber body for treatment under the purging action of the purge pipeline 100. This ensures that when the lower chamber body 200 performs the gas outlet function in the next round of work, the untreated waste gas remaining in the dead corner of the lower chamber body will not flow out of the RTO device, resulting in a situation where the waste gas treatment effect does not meet the standards. That is, by setting the purge pipeline 100, the purging of the RTO equipment is more thorough, and the waste gas treatment effect is also better.

[0066] In this embodiment, the axis of the first air outlet pipe portion 20 is arranged parallel to the bottom wall of the lower chamber body 200;

[0067] The middle portion of the lower chamber body 200 has an upwardly facing wedge-shaped flow guiding surface 201 , and the axis of the second air outlet pipe portion 30 is arranged parallel to the wedge-shaped flow guiding surface 201 .

[0068] In this embodiment, an upper chamber body communicated with the lower chamber body 200 is further included, and the purge pipeline 100 purges the exhaust gas in the lower chamber body 200 to the upper chamber body, so as to perform oxidation combustion treatment of the exhaust gas.

[0069] In this embodiment, the two ends of the first air outlet pipe part 20 and the second air outlet pipe part 30 are respectively arranged to the opposite side walls of the lower chamber body 200, and the first air outlet pipe part 20 and the second air outlet pipe part 30 are respectively provided with the first air outlet hole 210 and the second air hole at the two ends. Such arrangement enables every corner of the lower chamber body 200 to be purged.

[0070] In actual use, after the clean air enters the lower chamber body 200 through the connecting pipe part 40, it will be divided into three pipes, including a first air outlet pipe part 20 for bottom sweeping and two second air outlet pipe parts 30 for side sweeping. There are several air outlets on the pipe walls of the three pipes, specifically two air outlets of the bottom first air outlet pipe part 20 in the ascending direction of the air flow, and one air outlet of each of the two second air outlet pipe parts 30 on the side, so as to achieve the effect of sweeping the waste gas remaining in the corner of the lower chamber body 200 to the upper chamber body.

[0071] Example 2

[0072] The difference between this embodiment and embodiment 1 is that in this embodiment, there are two first air outlet pipe portions, which are respectively arranged at the bottom of the lower chamber body, and the two first air outlet pipe portions are respectively arranged on both sides of the vertical plane where the axis of the air inlet pipe portion is located, and a row of first air outlet holes are respectively arranged on the two first air outlet pipe portions, and the air outlet directions of the first air outlet holes of the two first air outlet pipe portions are respectively toward the side away from the air inlet pipe portion.

[0073] Example 3

[0074] The difference between this embodiment and embodiment 1 is that in this embodiment, there are three second air outlet pipe portions, which are respectively arranged at intervals, and the second air outlet hole on the second air outlet pipe portion located in the middle position exhausts air in an upward direction, and the second air outlet pipe portion located in the middle position is arranged on the same horizontal line as the other two second air outlet pipe portions, and the second air outlet pipe portion located in the middle position is arranged in the middle of the lower chamber body. The second air outlet pipe portion located in the middle position can enhance the upward blowing force.

[0075] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A purge pipeline for the lower chamber of an RTO, which is used to be arranged on the lower chamber of the RTO, characterized in that: The purge pipeline includes an air inlet pipe portion, a first air outlet pipe portion and a second air outlet pipe portion; The air inlet pipe portion is used to connect to a purge air source; The first air outlet pipe portion is connected to the air inlet pipe portion, and the first air outlet pipe portion is used to be arranged at the bottom position in the lower chamber body and to blow the exhaust gas at the bottom of the lower chamber body upwards; The second air outlet pipe portion is connected to the air inlet pipe portion, and the second air outlet pipe portion is used to be set in the middle and upper position of the lower chamber body, and continues to sweep upward the exhaust gas in the middle and upper part of the lower chamber body and the exhaust gas blown up from the bottom of the lower chamber body by the first air outlet pipe portion.

2. A purge pipeline for the lower chamber of RTO according to claim 1, characterized in that: The first air outlet pipe portion and the second air outlet pipe portion are respectively arranged horizontally.

3. A purge pipeline for the lower chamber of RTO according to claim 1, characterized in that: The first air outlet pipe portion has a plurality of first air outlet holes arranged at intervals, and the air outlet direction of the first air outlet holes is toward the bottom wall of the lower chamber body; The second air outlet pipe portion has a plurality of second air outlet holes arranged at intervals, and the air outlet directions of the second air outlet holes are toward a side away from the bottom wall of the lower chamber body.

4. A purge pipeline for the lower chamber of RTO as claimed in claim 3, characterized in that: The multiple first air outlet holes located in the first air outlet pipe part are arranged in two rows, and the intersection points of the axes of the two rows of the first air outlet holes and the outer wall of the first air outlet pipe part are both located below the horizontal plane where the axis of the first air outlet pipe part is located, and the two rows of the first air outlet holes are respectively located on both sides of the vertical plane passing through the axis of the first air outlet pipe part.

5. A purge pipeline for the lower chamber of RTO according to claim 4, characterized in that: The angle between the axis of the first air outlet and the vertical direction is between 0° and 75°.

6. A purge pipeline for the lower chamber of RTO as claimed in claim 3, characterized in that: The second air outlet pipe parts have two parts, and the two second air outlet pipe parts are respectively located on both sides of the axis of the air inlet pipe part; The second air outlet holes of the two second air outlet pipe parts are respectively located above the horizontal plane where the axes of the two second air outlet pipe parts are located.

7. A purge pipeline for the lower chamber of RTO according to claim 6, characterized in that: The air outlet directions of the second air outlet holes of the two second air outlet pipe parts are respectively toward a side away from the air inlet pipe part.

8. A purge pipeline for the lower chamber of RTO according to claim 1, characterized in that: The purge pipeline also includes a connecting pipe portion, and the air inlet pipe portion, the connecting pipe portion and the first air outlet pipe portion are sequentially connected and arranged in a Z-shaped structure.

9. An RTO device, characterized in that: It includes a lower chamber body and a purge pipeline arranged on the lower chamber body; The purge pipeline is a purge pipeline for the lower chamber of the RTO as described in any one of claims 1 to 8; The first air outlet pipe part and the second air outlet pipe part of the purge pipeline are respectively located inside the lower chamber body; The air inlet pipe portion of the purge pipeline is penetrated through the body wall of the lower chamber body.

10. The RTO device according to claim 9, characterized in that: The axis of the first air outlet pipe portion is arranged parallel to the bottom wall of the lower chamber body; The middle part of the lower chamber body is provided with an upwardly facing wedge-shaped flow guiding surface, and the axis of the second air outlet pipe portion is arranged parallel to the wedge-shaped flow guiding surface.

Images