Chimney for RTO

Abstract

The utility model discloses a chimney for RTO, which belongs to the technical field of chimneys and comprises a smoke box and a chimney cylinder, a baffle is arranged in the smoke box and divides an inner cavity of the smoke box into a first air inlet chamber and a second air inlet chamber, the bottoms of the first air inlet chamber and the second air inlet chamber are communicated with each other, and a smoke inlet is arranged on one side of the upper portion of the first air inlet chamber. An emergency exhaust gas inlet is formed in one side of the upper portion of the second gas inlet chamber, the top of the second gas inlet chamber is communicated with the lower portion of the chimney barrel through a pipeline, and a water inlet and a water outlet are formed in the smoke box. According to the utility model, the structure of the chimney body does not need to be transformed, investment of multiple strands of smoke can be realized, waste gas can be conveniently introduced into a hole when a new project is built in an industrial production enterprise, meanwhile, explosion caused by reverse flowing of the waste gas can be effectively prevented when the waste gas is emergently discharged, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of chimneys, and particularly relates to a chimney for RTO. Background Art

[0002] The RTO device is a highly efficient organic waste gas treatment device with high purification efficiency. It can treat a relatively large variety of waste gases, including flammable and explosive gases. Its working principle is that the waste gas enters the RTO device for incineration to remove harmful substances in the waste gas, and then is discharged through the chimney under the guidance of a fan.

[0003] When existing industrial manufacturers carry out the construction of the second phase or more phases of projects, they will add waste gas treatment facilities. To save costs and floor space, they will find empty spaces at the lower part of the original chimney to open holes to receive the input of waste gas and flue gas on the basis of the original chimney. This approach is likely to cause damage to the chimney body structure first, and in severe cases, it may lead to the collapse of the chimney; secondly, the input of multiple flue gases poses a risk of cross - mutual penetration of gas discharge directions, which will lead to the instability of the operating pressure and air volume of the disturbed system; at the same time, it affects the designed height of the sampling port position, and at the same time affects the manufacturing cost, manufacturing, and installation difficulty of the ladder passage. When looking for positions to open holes in the recycled chimney cylinder, the change is not feasible due to the interference of the ladder passage; finally, this hole - opening method will cause the internal anti - corrosion layer or static - conductive coating to be damaged and difficult to repair, leading to the explosion of flammable and explosive gases in the chimney and shortening the service life of the chimney and other problems.

[0004] When the RTO device is in an abnormal state, some waste gas needs to be emergently discharged. The existing method is to add an air flow cut - off device in front of the RTO device, and the waste gas at the front end of the air flow cut - off device is emergently discharged through the chimney. Since the fan between the RTO device and the chimney stops working, when emergently discharging waste gas, some waste gas will flow back into the high - temperature area of the RTO, causing pipeline explosion. Currently, the conventional method is to set a cut - off valve at the outlet of the RTO device. However, installing the cut - off valve at the fan outlet will form a relatively high air resistance, and at the same time, the corrosion resistance requirement in this area is relatively high, which will have a greater impact on the cost of the valve. This method has a low cost - performance and needs to be improved. Summary of the Invention

[0005] The purpose of the utility model is to overcome the above - mentioned deficiencies in technology and provide a chimney for RTO, which does not require the transformation of the chimney body structure, can realize the input of multiple flue gases, is convenient for the waste gas access and hole - opening work during the new project construction of industrial production enterprises, and can effectively prevent the situation of waste gas back - flow causing explosion during the emergency discharge of waste gas. It has a simple structure and low cost.

[0006] To achieve the above - mentioned utility model purpose, the technical solution adopted by the utility model is as follows:

[0007] A chimney for RTO, characterized in that it includes a flue gas box and a chimney barrel. A baffle is arranged in the flue gas box. The baffle divides the inner cavity of the flue gas box into a first air inlet chamber and a second air inlet chamber with interconnected bottoms. A flue gas inlet is arranged on one side of the upper part of the first air inlet chamber, and an emergency exhaust gas inlet is arranged on one side of the upper part of the second air inlet chamber. The top of the second air inlet chamber is connected to the lower part of the chimney barrel through a pipeline. A water inlet and a water outlet are arranged on the flue gas box.

[0008] A further improvement of the present utility model is that the baffle is arranged in an inclined shape, and the inclined direction of the baffle is from the first air inlet chamber to the second air inlet chamber. The bottom of the baffle is bent vertically downward. The inclined setting of the baffle facilitates the flow of flue gas from the first air inlet chamber to the second air inlet chamber, and the bottom of the baffle is bent vertically downward to the water seal position.

[0009] A further improvement of the present utility model is that both the flue gas inlet and the emergency exhaust gas inlet are located above the bottom end of the baffle.

[0010] A further improvement of the present utility model is that a plurality of flue gas inlets can be arranged to facilitate the access of flue gas from multiple projects.

[0011] A further improvement of the present utility model is that a water level sensor is arranged in the flue gas box. When the water level rises to the bottom of the baffle, the water inlet is stopped through the water level sensor to prevent excessive water seal or insufficient water seal position.

[0012] A further improvement of the present utility model is that the water level sensor is a float type water level sensor and is arranged on the inner wall of the flue gas box.

[0013] A further improvement of the present utility model is that a conductive anti-corrosion coating is arranged on the inner wall of the chimney barrel to improve the anti-corrosion ability of the chimney and eliminate the risk of electrostatic detonation of flammable and explosive gases in the chimney. The conductive anti-corrosion coating is a commonly used product in the market and is applied to the inner wall of the chimney barrel by on-site construction of workers.

[0014] The beneficial effects of the present utility model are as follows:

[0015] By arranging a flue gas box at the front section of the chimney, the present utility model can realize the mixing of multiple flue gases, achieve the stability of the air volume, without opening holes in the chimney, and there is no risk of cross-interference of gas discharge directions, which can effectively ensure the structural strength of the chimney and the effectiveness of the lining coating. At the same time, the present utility model is provided with an emergency exhaust gas inlet and uses the water seal technology. When it is necessary to urgently exhaust gas under abnormal conditions, the first air inlet chamber and the second air inlet chamber are isolated by introducing water, which can effectively prevent the reverse flow of the emergency exhaust gas into the RTO, without the need to set a cut-off valve, reducing costs and improving work efficiency. Description of the Drawings

[0016] Figure 1 This is a structural schematic diagram of the present utility model.

[0017] Figure 2 This is the front view of the present utility model.

[0018] In the figure: flue gas box 1, chimney barrel 2, baffle 3, first intake chamber 4, second intake chamber 5, flue gas inlet 6, emergency exhaust gas inlet 7, water inlet 8, water outlet 9, water level sensor 10, conductive anti-corrosion coating 11. Specific embodiments

[0019] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings:

[0020] As Figure 1-2 shown, a chimney for RTO includes a flue gas box 1 and a chimney barrel 2. A baffle 3 is arranged in the flue gas box 1. The baffle 3 divides the inner cavity of the flue gas box 1 into a first intake chamber 4 and a second intake chamber 5 that communicate with each other at the bottom. On one side of the upper part of the first intake chamber 4, there is a flue gas inlet 6. On one side of the upper part of the second intake chamber 5, there is an emergency exhaust gas inlet 7. The top of the second intake chamber 5 is connected to the lower part of the chimney barrel 2 through a pipeline. A water inlet 8 and a water outlet 9 are arranged on the flue gas box 1.

[0021] Furthermore, the baffle 3 is arranged in an inclined shape, and the inclined direction of the baffle 3 is from the first intake chamber 4 to the second intake chamber 5. The bottom of the baffle 3 is bent vertically downward. The inclined arrangement of the baffle 3 facilitates the flow of flue gas from the first intake chamber 4 to the second intake chamber 5, and the bottom of the baffle 3 is bent vertically downward to the water seal position.

[0022] Furthermore, both the flue gas inlet 6 and the emergency exhaust gas inlet 7 are located above the bottom end of the baffle 3.

[0023] Furthermore, several flue gas inlets 6 can be arranged to facilitate the access of flue gas from multiple projects.

[0024] Furthermore, a water level sensor 10 is arranged in the flue gas box 1. When the water level rises to the bottom of the baffle 3, the water inlet stops through the water level sensor 10 to prevent excessive water seal or insufficient water seal position.

[0025] Furthermore, the water level sensor 10 is a float type water level sensor and is arranged on the inner wall of the flue gas box 1.

[0026] Furthermore, a conductive anti-corrosion coating 11 is arranged on the inner wall of the chimney barrel 2 to improve the anti-corrosion ability of the chimney and eliminate the risk of electrostatic detonation of flammable and explosive gases in the chimney. The conductive anti-corrosion coating 11 is a commonly used product in the market and is applied to the inner wall of the chimney barrel 2 by on-site construction of workers.

[0027] The working principle of the present utility model is:

[0028] An enterprise can open a plurality of flue gas inlets 6 on the first inlet chamber 4 of the flue gas box 1 according to the construction project. Under normal operating conditions, the flue gas enters from the flue gas inlet 6, sequentially passes through the first inlet chamber 4 and the second inlet chamber 5, and then is discharged into the chimney. At this time, there is no water in the flue gas box 1, and the water inlet 8 and the water outlet 9 are also in a closed state.

[0029] When the RTO encounters an abnormal situation, the waste gas does not enter the RTO and directly enters the second inlet chamber 5 from the emergency exhaust gas inlet 7. At the same time, the water inlet 8 is opened until the water level inside the flue gas box 1 rises to the bottom of the baffle 3. After the water level sensor 10 measures that the water level reaches the predetermined value, the control system is used to control the water inlet 8 to close. The first inlet chamber 4 and the second inlet chamber 5 are in a non-connected state, and the waste gas can only enter the chimney for discharge from the second inlet chamber 5 and cannot enter the first inlet chamber 4.

[0030] After the abnormal state is eliminated, the water outlet 9 is opened to drain water, and the flue gas box 1 returns to the original state for normal flue gas discharge work. The water inlet 8 and the water outlet 9 are respectively connected to the circulating water tank through a water pump to achieve rapid water sealing. Electric valves are provided on both the water inlet 8 and the water outlet 9 to control the opening / closing of the water inlet 8 and the water outlet 9.

[0031] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A chimney for RTO, characterized in that: It includes a smoke box and a chimney body, wherein a baffle is arranged in the smoke box, and the baffle divides the inner cavity of the smoke box into a first air inlet chamber and a second air inlet chamber which are interconnected at the bottom; a smoke inlet is arranged on an upper side of the first air inlet chamber, and an emergency exhaust gas inlet is arranged on an upper side of the second air inlet chamber; the top of the second air inlet chamber is connected with the lower part of the chimney body through a pipe, and a water inlet and an outlet are arranged on the smoke box.

2. The RTO chimney according to claim 1, characterized in that: The baffle is arranged in an inclined shape, and the inclined direction of the baffle is the direction from the first air inlet chamber to the second air inlet chamber, and the bottom of the baffle is bent vertically downward.

3. The RTO chimney according to claim 1, characterized in that: The smoke inlet and the emergency exhaust gas inlet are both located above the bottom end of the baffle.

4. The RTO chimney according to claim 1, characterized in that: The smoke inlet may be provided in plurality.

5. The RTO chimney according to claim 1, characterized in that: A water level sensor is arranged in the smoke box.

6. The RTO chimney according to claim 5, characterized in that: The water level sensor is a float type water level sensor and is arranged on the inner wall of the smoke box.

7. The RTO chimney according to claim 1, characterized in that: A conductive anti-corrosion coating is provided on the inner wall of the chimney cylinder.

Images