CN112879928B

CN112879928B - A high-efficient mixed wind heat sink for RTO system high temperature discharges

Info

Publication number: CN112879928B
Application number: CN202011629672.0A
Authority: CN
Inventors: 胡晓祺; 周良; 盛同范; 沈翔
Original assignee: Shanghai Guangcheng Coating Technology Engineering Co ltd
Current assignee: Shanghai Guangcheng Coating Technology Engineering Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-09-29
Anticipated expiration: 2040-12-31
Also published as: CN112879928A

Abstract

The invention discloses a high-efficiency air mixing and cooling device for high-temperature discharge of an RTO (room temperature air conditioner) system, which comprises a heat preservation layer, a steady flow pipe and a plurality of rotating wheels for exhausting air; the heat preservation layer is connected with the flow stabilizing pipe, and high-temperature gas is transmitted into the flow stabilizing pipe through the heat preservation layer; the steady flow pipe discharges the high-temperature gas after steady flow from two sides and slowly descends; the exhaust of the rotating wheels corresponds to the flow direction of the high-temperature gas exhausted after steady flow, the exhaust of the rotating wheels is used for lifting the low-temperature gas, the low-temperature gas and the slowly-descending high-temperature gas form convection and are fully mixed, and the mixed low-temperature gas is exhausted. The low-temperature gas and the high-temperature gas are formed into convection through the rotating wheel and are fully mixed to form mixed low-temperature gas to be discharged; the design can quickly reduce the temperature of high-temperature gas and ensure the stability of the chimney barrel structure.

Description

A high-efficient mixed wind heat sink for RTO system high temperature discharges

Technical Field

The invention relates to the technical field of cooling treatment, in particular to a high-efficiency air mixing cooling device for high-temperature discharge of an RTO system.

Background

Today, atmospheric pollution is one of the most prominent environmental problems in China, and industrial waste gas is an important source of atmospheric pollutants. A large amount of industrial waste gas is discharged into the atmosphere, so that the quality of the atmospheric environment is inevitably reduced, and serious harm is brought to human bodies. The organic waste gas is inflammable, explosive, toxic, harmful, insoluble in water, soluble in organic solvent and difficult to treat. Therefore, safety and environmental protection are also indispensable in treating exhaust gas.

The RTO, which is now popular, is a regenerative thermal oxidation incinerator, which directly oxidizes exhaust gas at high temperature to generate carbon dioxide and water, thereby purifying the exhaust gas and recovering heat released when the exhaust gas is decomposed.

However, when RTO is discharged, the temperature is too high, a 300mm thick ceramic fiber inner heat insulation plate is adopted in the air pipe for heat insulation, but the inner heat insulation of the discharge chimney (diameter of 1.8 m) cannot be realized, and the high temperature section only occupies a small section of the whole length of the chimney, so that the surface environment of the chimney is inconsistent due to the excessive temperature difference, the stable structure of the cylinder body and the corrosion protection of the surface are easily affected, and unsafe factors are generated.

It can be seen how to quickly cool the discharged high-temperature gas is a problem to be solved in the art.

Disclosure of Invention

Aiming at the technical problem of low stability in the prior art, the aim of the scheme is to provide a high-efficiency air mixing cooling device for high-temperature emission of an RTO system, which discharges the mixed gas by mixing high-temperature gas and low-temperature gas, thereby greatly reducing the temperature difference in a chimney and ensuring the stability of the structure of the chimney.

In order to achieve the purpose, the high-efficiency air mixing and cooling device for the RTO system high-temperature discharge comprises a heat preservation layer, a steady flow pipe and a plurality of rotating wheels for exhausting air; the heat-insulating layer is connected with the flow stabilizing pipe, and high-temperature gas is transmitted into the flow stabilizing pipe through the heat-insulating layer; the steady flow pipe discharges the high-temperature gas after steady flow from two sides and slowly descends; the exhaust of the rotating wheels corresponds to the flow direction of the high-temperature gas exhausted after the steady flow, the exhaust of the rotating wheels is used for rising the low-temperature gas, the low-temperature gas and the slowly-falling high-temperature gas form convection and are fully mixed, and the mixed low-temperature gas is exhausted.

Further, two sides of the bottom of the steady flow pipe are respectively provided with dense holes, and the high-temperature gas after steady flow is discharged through the dense holes.

Further, a mixing section is arranged between the steady flow pipe and the exhaust air of the rotating wheels, and the high-temperature gas and the low-temperature gas are mixed in the mixing section.

Further, stainless steel baffles are arranged on the side walls of the chimney of the mixing section.

The invention provides a high-efficiency air mixing cooling device for high-temperature discharge of an RTO system, which is characterized in that low-temperature gas and high-temperature gas are formed into convection through a rotating wheel and are fully mixed to form mixed low-temperature gas for discharge; the design can quickly reduce the temperature of high-temperature gas and ensure the stability of the chimney barrel structure.

Drawings

The invention is further described below with reference to the drawings and the detailed description.

FIG. 1 is a schematic plan view of the inside of the high-temperature discharge efficient air mixing cooling device;

FIG. 2 is a schematic view of the first side of the inside of the high temperature exhaust high efficiency air mixing cooling device;

fig. 3 is a second side view of the inside of the high temperature discharge efficient air mixing cooling device.

Detailed Description

The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.

The high-temperature discharge efficient air mixing cooling device provided by the scheme, referring to fig. 1-3, comprises a chimney 100, a heat preservation layer 200, a steady flow pipe 300 and a runner exhaust 400.

The high temperature gas discharged from the RTO flows in the low temperature gas direction after entering the chimney steady flow pipe 300 from the heat preservation layer 200, the low temperature gas flows in the high temperature gas direction from the bottom of the chimney 100 through the runner exhaust 400, and the high temperature gas and the low temperature gas are mixed to form the low temperature gas and then discharged from the upper part of the chimney 100.

The heat preservation layer 200 is used for preserving heat of high-temperature gas exhausted by the RTO, and is located at the inlet of the chimney 100. The high-temperature gas exhausted by the RTO is insulated by the insulating layer 200, so that the high-temperature gas exhausted by the RTO is kept at 750-850 ℃ when entering the chimney 100, and the high-temperature gas can reach a specific low-temperature when being mixed with the low-temperature gas in the later period.

The structural scheme of the heat insulation layer 200 is not limited, and may be a heat insulation air pipe, preferably, the inner diameter is 0.4mx0.4m, and the flow rate and the flow area of the high temperature entering the heat insulation air pipe can be controlled.

A bracket 310 is provided in the middle of the chimney 100 for mounting the steady flow tube 300.

The flow stabilizing pipe 300 is used for reducing wind speed and stabilizing flow of the high-temperature gas, and is positioned in the middle of the chimney 100, and an opening of the flow stabilizing pipe 300 corresponds to an inlet of the chimney 100.

The bottoms of the two sides of the flow stabilizing pipe 300 are provided with dense holes 320, which are used for stabilizing the high-temperature gas in the flow stabilizing pipe 300 after being stabilized through the dense holes, slowly entering the inside of the chimney 100 and slowly descending after entering the inside of the chimney 100.

The number of the dense holes 320 is preferably 200 small holes with the diameter of 40mm-60mm, so that the flow speed and the flow area of high temperature can be controlled; further, the shape of the hole 320 is not limited, and may be circular, square, etc., and may be determined according to practical situations.

Here, the flow stabilizer 300 is preferably a stainless steel flow stabilizer having a diameter of 0.5m-1m and a temperature resistance of up to 1000 ℃.

A mixing section for mixing the low-temperature gas and the high-temperature gas is provided at the bottom end of the hole 320 of the steady flow tube 300.

The bottom of the chimney 100 is provided with a low-temperature gas inlet 500 corresponding to the flow direction of the high-temperature gas after steady flow; for injecting low temperature gas into the interior of the stack 100.

The low temperature gas is preferably less than 60 ℃, so that the low temperature gas and the high temperature gas can be fully mixed to ensure that the mixed low temperature gas reaches a relatively low temperature, namely, the temperature is lower than 120 ℃.

A large number of wheel exhaust air 400 is provided at the low temperature gas inlet 500, and the low temperature gas at the bottom is blown upward at a certain speed by the wheel exhaust air 400, and the low temperature gas and the slowly descending high temperature gas are convected and fully mixed. The mixed low-temperature gas rises into the chimney 100.

The wind speed of the rotor exhaust 400 is preferably 10-12m/s, so that the low temperature gas can be mixed with the high temperature gas at an accelerated speed.

A mixing section 120 is arranged between the steady flow pipe 300 and the plurality of runner exhaust pipes 400, and the high-temperature gas and the low-temperature gas are mixed in the mixing section 120.

Meanwhile, a stainless steel baffle 110 is added to the mixing section portion of the side wall of the chimney 100. The unmixed sufficient gas is prevented from directly impacting the side wall of the chimney 100, and the whole structure of the chimney 100 is protected.

The shape of the stainless steel baffle 110 is not limited herein, and may be adapted to the shape of the side wall of the chimney 100.

The following illustrates the working procedure of the present solution in a specific application:

when the high-temperature discharging and high-efficiency air mixing cooling device formed by the scheme is particularly applied, firstly, high-temperature gas discharged by RTO enters the flow stabilizing pipe 300 after passing through the heat insulation layer 200 of the chimney, the wind speed and the flow stabilizing of the high-temperature gas input by the flow stabilizing pipe 300 are reduced, and the gas after the flow stabilizing stably and slowly enters the inside of the chimney 100 through the holes 320 at the two sides of the bottom of the flow stabilizing pipe and slowly descends.

The low-temperature gas inputted from the bottom of the chimney 100 is raised by a plurality of wheel exhaust pipes 400, and is formed to flow with the slowly-lowered high-temperature gas and is fully mixed, so that the low-temperature gas is generated, and the mixed gas is raised into the upper part of the chimney 100 to be discharged.

The high-efficient mixed wind heat sink that this scheme provided, it can reduce the gaseous temperature of high temperature fast, has ensured the anticorrosive protection and the security of chimney barrel structure and surface.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The high-efficiency air mixing and cooling device for the high-temperature discharge of the RTO system is characterized by comprising a heat preservation layer, a steady flow pipe and a plurality of rotating wheels for exhausting air; the heat preservation layer is positioned at the inlet of the chimney, the heat preservation layer is used for preserving the heat of the high-temperature gas exhausted by the RTO, the high-temperature gas exhausted by the RTO is ensured to be kept at 750-850 ℃ when entering the inside of the chimney, the heat preservation layer is connected with the flow stabilizing pipe, and the heat-preserved high-temperature gas is transmitted into the flow stabilizing pipe through the heat preservation layer;

the flow stabilizing pipe is positioned in the middle of the chimney, dense holes are formed in the bottoms of the two sides of the flow stabilizing pipe, a mixing section for mixing low-temperature gas and high-temperature gas is arranged at the bottom ends of the holes of the flow stabilizing pipe, the flow stabilizing pipe is used for enabling the high-temperature gas in the flow stabilizing pipe to pass through the dense holes stably after being stabilized, slowly enter the chimney, and slowly descend to the mixing section after entering the chimney;

the rotating wheel exhaust is arranged at the bottom of the flow stabilizing pipe and corresponds to the flow direction of the high-temperature gas discharged after the flow stabilization, the low-temperature gas is raised relative to the flow stabilizing pipe at a certain speed through the rotating wheel exhaust, and the low-temperature gas and the high-temperature gas slowly falling from the flow stabilizing pipe form convection and are fully mixed in the mixing section to form the low-temperature gas with the required temperature, and then the low-temperature gas is discharged.

2. The efficient air mixing and cooling device for high-temperature discharge of an RTO system according to claim 1, wherein a mixing section is arranged between the flow stabilizing pipe and the exhaust air of the rotating wheels, and the high-temperature gas and the low-temperature gas are mixed in the mixing section.

3. The efficient air mixing and cooling device for high-temperature discharge of an RTO system according to claim 2, wherein the side walls of the chimney of the mixing section are provided with stainless steel baffles.