CN212252683U

CN212252683U - Natural power air cooling and smoke whitening device

Info

Publication number: CN212252683U
Application number: CN202021637262.6U
Authority: CN
Inventors: 裴英翔
Original assignee: BEIJING YINGXIANGBORUI REFRACTORY TECHNOLOGY CO LTD
Current assignee: BEIJING YINGXIANGBORUI REFRACTORY TECHNOLOGY CO LTD
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-12-29
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses a natural power forced air cooling and flue gas take off white device, include: a barrel; one end of the upper end and the lower end of the cylinder body is provided with a flue gas inlet, and the other end of the cylinder body is provided with a flue gas outlet; the plurality of air inlets are arranged on the cylinder body from bottom to top; the external airflow guide structure is used for guiding external air entering from the air inlet into the cylinder; and the heat exchange device is arranged in the external airflow guide structure and is used for exchanging heat with the external air.

Description

Natural power air cooling and smoke whitening device

Technical Field

The utility model relates to a heating power technical field, especially a natural power forced air cooling and flue gas take off white device.

Background

Water cooling towers or towers are a common industrial cooling device. The working principle of the device is that the air blown in and the water sprinkled from the air form convection to discharge a heat source, and part of water is evaporated in the convection to take away corresponding latent heat of evaporation. Thereby lowering the temperature of the water.

However, the existing cooling tower has many defects, for example, in the case of the split cooling tower, circulating water is sprayed onto a glass fiber filler in a spraying manner, heat exchange is achieved through contact between water and air, a fan drives airflow circulation in the tower, hot airflow after heat exchange with water is taken out, so that cooling is achieved, but the water is in direct contact with the air, a humid environment is formed in the tower, microorganisms can be gathered in the filler, and the filler is difficult to clean. In addition, if the spraying is not uniform, the problems of non-uniform heat exchange, low efficiency and the like can be caused.

On the other hand, the flue gas of a boiler contains the largest amount of stomach smoke, sulfur dioxide, and then carbon monoxide, hydrocarbons, nitric oxide, and photochemical smog. Most of these pollution comes from various industrial, utility and residential boilers burning coal.

Therefore, the boiler flue gas needs to be treated and can be discharged after reaching the emission standard. Otherwise, it will have a very negative impact on the environment. However, if the above-described cooling tower is used to treat boiler flue gas, there are still problems with the cooling tower itself. And the smoke discharge device (such as a chimney) is connected with the water cooling tower, so that the occupied space of the equipment is increased.

Therefore, the utility model is especially provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a natural power forced air cooling and flue gas take off white device can cancel current cooling tower, uses natural forced air cooling, reduces power cost, can realize that the flue gas takes off white.

In order to solve the above problem, an embodiment of the utility model provides a natural power forced air cooling and flue gas take off white device, include:

a barrel; one end of the upper end and the lower end of the cylinder body is provided with a flue gas inlet, and the other end of the cylinder body is provided with a flue gas outlet;

the plurality of air inlets are arranged on the cylinder body from bottom to top;

the external airflow guide structure is used for guiding external air entering from the air inlet into the cylinder;

and the heat exchange device is arranged in the external airflow guide structure and is used for exchanging heat with the external air.

Furthermore, the heat exchange device comprises a plurality of heat exchange pipelines arranged in the external airflow guide structure, and heat exchange media are introduced into the heat exchange pipelines.

Further, the heat exchange amount of the heat exchange device in the external airflow guide structure corresponding to each air inlet is different, so that the air introduced by each air inlet has different temperature.

Furthermore, the heat exchange amount of the heat exchange device in the external airflow guide structure corresponding to each air inlet is gradually increased from bottom to top, so that the temperature of the air introduced by the air inlets is gradually increased from bottom to top.

Further, the inner side of the cylinder body is also provided with an inner airflow guide structure communicated with the outer airflow guide structure, and the inner airflow guide structure is used for guiding outer air into a smoke discharge and circulation area.

Further, the external airflow guide structure comprises a first channel communicated above the air inlet, and external air can flow upwards after entering the first channel; the internal airflow guide structure comprises a second channel communicated with the inner side above the first channel and used for leading external air into a smoke discharge and circulation area at the inner side of the cylinder after entering the cylinder.

Further, the cylinder comprises a discharge accelerating section which is connected above the inner airflow guide structure at the uppermost stage and is used for forming larger pressure difference so as to accelerate the discharge speed of the flue gas.

Compared with the prior art, the utility model discloses a following beneficial effect has:

(1) a cooling tower is omitted, natural air cooling is used, the natural air can be automatically sucked into the cylinder under the chimney effect, power for driving air to enter is not needed, and cost is reduced; (2) the heat exchange medium in the heat exchange device can be circulated in a closed loop without loss; (3) the heat exchange medium in the heat exchange device does not contact with air, and is free of microorganisms and steam; (4) the device has the advantages that the smoke whitening can be realized, meanwhile, the design of the cylinder body can replace the use of a chimney, a smoke whitening device does not need to be additionally arranged independently, and the space is saved.

Drawings

FIG. 1 is a schematic view of a natural power air cooling and smoke whitening device provided by an embodiment of the present invention

Fig. 2 is a schematic structural view of a natural power air cooling and flue gas whitening device according to another embodiment of the present invention;

FIG. 3 is a schematic view of the enlarged structure of the area A in FIG. 2;

FIG. 4 is a schematic diagram of a heat exchange tube configuration;

in the figure: 1-a cylinder body; 2-a base; 3-a flue gas outlet; 4-air inlet; 5-a first channel; 6-a second channel; 7-a heat exchange conduit; 8-discharge acceleration section; 9-a pipe body; 10-inner fins; 11-outer fins; 12-a flue gas inlet; 13-a media distributor; 14-outside air.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments shown in the drawings. It should be understood that these embodiments are described only to enable those skilled in the art to better understand the invention and to implement the invention, and are not intended to limit the scope of the invention in any way.

Referring to fig. 1-3, an embodiment of the present invention provides a natural power air cooling and smoke whitening device, which can be used in other scenes requiring cooling or heating besides smoke whitening.

The device comprises a cylinder body 1 which can be a cylinder or a polygonal cylinder, and the bottom of the cylinder body 1 can be arranged on a foundation 2. In some embodiments, the upper end of the cylinder 1 is provided with a flue gas outlet 3, and the lower end is provided with a flue gas inlet 12, which can be arranged on the side wall of the cylinder 1 or at the bottom end of the foundation 2. At the moment, the flue gas enters from the lower end of the cylinder body 1, and the flue gas is discharged from the upper end. In other embodiments, the upper end of the cylinder 1 can also be used as a flue gas inlet, and the lower end is used as a flue gas outlet 3, so that the flue gas reversely moves in the cylinder 1. The specific movement direction of the flue gas is related to the heat exchange state of the flue gas in the cylinder body 1, the flue gas moves from bottom to top during cooling, and moves from top to bottom during heating.

The cylinder body 1 can be used for discharging flue gas, so that the cylinder body can be directly used as a chimney, meanwhile, the flue gas whitening is realized by means of the components and the structure described below, an additional whitening device is not required to be additionally arranged, and the occupied space of the whole device is saved.

The side surface of the cylinder 1 is provided with a plurality of air inlets 4, the air inlets 4 are arranged at intervals from bottom to top, and in some embodiments, each air inlet 4 can be arranged around the cylinder 1. The number of the air inlets 4 can be adjusted according to actual needs, and the embodiment is four-stage air inlets P1, P2, P3 and P4. The upper portion of the air inlet 4 is connected with an external air flow guide structure, so that the external air 14 entering the air inlet 4 enters the inner side of the cylinder 1 through a section of upward moving channel.

After the flue gas is introduced into the cylinder body 1, the temperature of the flue gas is higher, and the temperature of the externally-connected air is lower. Because the difference in air density is generated by the difference in temperature between the air inside and outside the cylinder 1, a pressure difference is formed, tending to cause the air inside and outside the cylinder 1 to flow. The smoke with high temperature in the cylinder 1 rises due to small specific gravity and is discharged from the air port at the upper part of the building, and a negative pressure area is formed at the original place of low-density air, so that external air 14 with low temperature and high specific gravity outside the cylinder 1 is sucked from the air inlet 4, and the air inside and outside the cylinder 1 continuously flows. This natural draft caused by hot pressing is called the chimney effect, and by means of the chimney effect, power (such as an external fan and the like) does not need to be provided for the flow of the gas, and power cost is saved.

An inner air flow guide structure is also connected inside the upper end of the outer air flow guide structure for further guiding the incoming air to the flow area of the flue gas discharge, i.e. in the central part of the cylinder 1.

In this embodiment, the outer airflow guiding structure is a first channel 5 connected above the air inlet 4, and the inner airflow guiding structure is a second channel 6 communicated above the first channel 5. The second channel 6 may be vertically oriented (as shown in fig. 2) or may be a combination of inclined and vertical orientation (as shown in fig. 1).

In some embodiments, heat exchange means are provided within the outer airflow directing structure for exchanging heat with the outside air 14. The heat exchange device can be used for cooling and heating, and is determined according to the application of the device.

In this embodiment, the heat exchange device is a plurality of heat exchange tubes 7 arranged in the first channel 5 from top to bottom to form a heat exchange tube group. A heat exchange medium is introduced into the heat exchange pipeline 7. The heat exchange amount of the heat exchange pipe 7 in each first passage 5 is different, so that the temperature of the external air introduced from each air inlet 4 is different. In some embodiments, the heat exchange amount of the heat exchange pipeline 7 is gradually increased from bottom to top, so that the temperature of the air introduced from the air inlet 4 is gradually increased from bottom to top, that is, the temperature of each level of inlet air is gradually increased from bottom to top, which accords with the rule that hot air gradually moves upwards, and meanwhile, the inlet air temperature at the upper part is higher, which can help to remove moisture in the flue gas and enhance the effect of the white removal of the flue gas.

The way of changing the amount of heat exchange may be many, for example, the temperature of the heat exchange tubes 7 may be different, or the number of heat exchange tubes 7 may be adjusted. The heat exchange pipeline 7 corresponding to each air inlet 4 can be independently provided with a valve, and whether the valve is opened or not can be determined according to requirements. There may be many kinds of heat exchange media in the heat exchange pipeline 7, for example, circulating water may be used, and because the water in the heat exchange pipeline 7 is not in contact with the outside air and can be circulated completely in a closed manner, a humid environment is not generated, and the growth of microorganisms is prevented.

The heat exchange pipeline 7 can adopt a high-efficiency heat exchange finned tube provided by Beijing Yingxiang Borui refractory material science and technology Limited. As shown in FIG. 4, the tube body 9 of the high-efficiency heat exchange finned tube is internally provided with a plurality of inner fins 10 which are arranged in parallel at intervals, and the tube body is externally provided with a plurality of outer fins 11 which are arranged approximately perpendicular to the tube wall and are distributed along the circumferential direction. The structure increases the heat exchange area, fully utilizes the space inside and outside the tube body 9 and improves the heat exchange efficiency.

In some embodiments, the uppermost section of the barrel 1 is a discharge acceleration section 8, which is located above the first passage 5 and the second passage 6 of the uppermost stage, and is used for forming a larger pressure difference between the top end of the barrel 1 and the air inlet 4 of the uppermost stage, so as to increase the discharge speed of the flue gas. A medium distributor 13 which can be a circle of heat insulation layer can also be arranged on the discharge accelerating section 8 in a surrounding manner to accelerate the discharge of the flue gas in the discharge accelerating section 8.

When the heat exchange device provided by the embodiment is used for carrying out whitening treatment on flue gas, the method comprises the following steps:

the smoke is introduced from the smoke inlet, and the external air is automatically sucked into the air inlet 4 under the chimney effect;

the temperature of air entering from the air inlet 4 at the bottom is low, so that the flue gas is cooled to generate condensed water, and the temperature of air entering from the air inlet 4 at the upper part is slightly high, so that the water vapor in the flue gas can be removed, and the effect of removing white smoke is achieved.

The present invention has been described in detail with reference to specific embodiments, and the description of the embodiments is only for the purpose of helping understanding the core idea of the present invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. Natural power forced air cooling and flue gas take off white device, its characterized in that includes:

2. The natural power air-cooling and flue gas whitening device of claim 1, wherein the heat exchange device comprises a plurality of heat exchange tubes arranged in the outer airflow guiding structure, and a heat exchange medium is introduced into the heat exchange tubes.

3. The natural power air-cooling and flue gas whitening device of claim 1, wherein the heat exchange amount of the heat exchange device in the external airflow guiding structure corresponding to each air inlet is different, so that the air introduced by each air inlet has different temperature.

4. The natural power air-cooling and flue gas whitening device according to claim 3, wherein the heat exchange amount of the heat exchange device in the external airflow guiding structure corresponding to each air inlet is gradually increased from bottom to top, so that the temperature of the air introduced by the air inlet is gradually increased from bottom to top.

5. The natural power air-cooling and smoke whitening device according to claim 1, wherein an inner airflow guiding structure communicated with the outer airflow guiding structure is further provided inside the cylinder for guiding the outer air into the area where the smoke is discharged and circulated.

6. The natural power air-cooling and smoke whitening device of claim 5, wherein the external air flow guiding structure comprises a first channel communicated above the air inlet, and the first channel can enable external air to flow upwards after entering; the internal airflow guide structure comprises a second channel communicated with the inner side above the first channel and used for leading external air into a smoke discharge and circulation area at the inner side of the cylinder after entering the cylinder.

7. The natural power air cooling and flue gas whitening device of claim 5, wherein the barrel comprises a discharge acceleration section above the internal airflow directing structure of the uppermost stage for creating a greater pressure differential to increase the discharge velocity of the flue gas.