CN218596161U

CN218596161U - Combined type heat insulation evaporation tower

Info

Publication number: CN218596161U
Application number: CN202222587420.7U
Authority: CN
Inventors: 杨杰; 周新兵
Original assignee: Anhui Huaertai Chemical Industry Co Ltd
Current assignee: Anhui Huaertai Chemical Industry Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-10
Anticipated expiration: 2032-09-28

Abstract

The utility model provides a combined type adiabatic evaporation tower relates to adiabatic tower technical field. In the utility model, the tower body of the tower is a vertical cylinder, the flue gas enters the tower from the flue gas inlet at the bottom of the tower, the spray liquid sprays downwards from the spray device at the middle upper part of the tower, no accessories such as filler and the like exist in the tower, the gas and the liquid are in reverse contact and meet through flow grid plates, the gas and liquid contact area can be effectively increased, the sufficient specific surface area is provided for the gas and liquid two-phase contact, the strong mass transfer is formed, and the absorption efficiency is high; in addition, the gas distribution is uniform under the conditions of high spray density and large free sectional area, so that uniform gas-liquid contact can be ensured, and the condition of local cutoff can not occur.

Description

Combined type heat insulation evaporation tower

Technical Field

The utility model relates to an adiabatic tower technical field, concretely relates to adiabatic evaporation tower of combined type.

Background

In the production of acid by sulfur production, the low-temperature-level waste heat which accounts for 20 percent of the residual heat in the dry absorption process is not recycled and is exhausted together with tail gas after being desulfurized by hydrogen peroxide, although the temperature of the part of flue gas is generally between 60 and 90 and the specific heat capacity is low, the gas amount is generally between 100000 and 130000Nm ³ And/h, the total heat is large, and the direct discharge heat energy loss is large.

At present, a sulfuric acid workshop is researched and developed aiming at the problems, an adiabatic humidification principle is provided, and tail absorption acidic water is subjected to adiabatic evaporation concentration by using low-temperature flue gas at an outlet of a secondary absorption tower. The key to the evaporation of acidic water is the design of the heat-insulating tower, especially the arrangement of the tower structure and the equipment components. The existing heat insulation towers have three types: (1) a packed column; (2) a bubble column; and (3) a sieve plate tower. However, the effect of any of the above-mentioned adiabatic towers for evaporating acidic water is to be improved.

Therefore, there is a need to provide a compound adiabatic evaporation tower to solve the above technical drawbacks.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a combined type adiabatic evaporation tower has solved current adiabatic tower and has been used for the general technical problem of sour water evaporation effect.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a combined type heat insulation evaporation tower comprises a vertical cylinder body, a flue gas inlet, a grid plate and a spraying device;

the flue gas inlet is communicated with the lower part of the side wall of the vertical cylinder body;

the periphery of the grid plate is fixedly connected with the inner wall of the vertical cylinder body;

the spraying device is matched with the grid plates and extends to the upper part of the corresponding grid plate after penetrating through the side wall of the vertical cylinder body.

Preferably, the spraying device comprises a spray head and a distributor;

the liquid inlet end of the spray head is communicated with the middle upper part of the side wall of the vertical barrel body, and the liquid outlet end of the spray head extends to the upper part of the distributor;

the periphery of the distributor is fixedly connected with the inner wall of the vertical cylinder body, and the distributor is positioned above the corresponding grid plate.

Preferably, the grids include an upper grid and a lower grid.

Preferably, the composite adiabatic evaporation tower further comprises a porous intercepting gas distribution cover;

the porous intercepting gas distribution hood is positioned above the flue gas inlet and below the lower grid plate; the periphery of the porous interception gas distribution cover is fixedly connected with the inner wall of the vertical cylinder body.

Preferably, the porous intercepting and gas distributing cover is small in the opening of the gas outlet end close to the flue gas inlet and large in the opening of the gas outlet end far away from the flue gas inlet.

Preferably, the combined type heat-insulation evaporation tower further comprises a mist eliminator;

the mist eliminator is positioned at the uppermost part in the vertical barrel body, and the periphery of the mist eliminator is fixedly connected with the inner wall of the vertical barrel body.

Preferably, the frother comprises a wire mesh frother.

(III) advantageous effects

The utility model provides a combined type adiabatic evaporation tower. Compared with the prior art, the method has the following beneficial effects:

the utility model comprises a vertical cylinder body, a flue gas inlet, a grid plate and a spraying device; the flue gas inlet is communicated with the lower part of the side wall of the vertical cylinder body; the periphery of the grid plate is fixedly connected with the inner wall of the vertical cylinder body; the spraying device is matched with the grid plates and extends to the upper part of the corresponding grid plate after penetrating through the side wall of the vertical cylinder body. The low-temperature flue gas is introduced through the flue gas inlet, the acidic water is introduced through the spraying device, and the gas phase and the liquid phase meet at the flow grid plate, so that the gas-liquid contact area can be effectively increased, the sufficient specific surface area is provided for the gas-liquid two-phase contact, the strong mass transfer is formed, and the absorption efficiency is high; in addition, the gas distribution is uniform under the conditions of high spray density and large free sectional area, so that uniform gas-liquid contact can be ensured, and the condition of local cutoff can not occur.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an internal structure of a composite adiabatic evaporation tower according to an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the application provides a combined type heat insulation evaporation tower, has solved current heat insulation tower and has been used for the general technical problem of acid water evaporation effect, guarantees the efficiency and the energy-conserving effect of adiabatic evaporation.

In order to solve the technical problems, the general idea of the embodiment of the application is as follows:

the embodiment of the utility model comprises a vertical cylinder body, a flue gas inlet, a grid plate and a spraying device; the flue gas inlet is communicated with the lower part of the side wall of the vertical cylinder body; the periphery of the grid plate is fixedly connected with the inner wall of the vertical cylinder body; the spraying device is matched with the grid plates and extends to the upper part of the corresponding grid plate after penetrating through the side wall of the vertical cylinder body. The low-temperature flue gas is introduced through the flue gas inlet, the acidic water is introduced through the spraying device, and the gas phase and the liquid phase meet at the flow grid plate, so that the gas-liquid contact area can be effectively increased, the sufficient specific surface area is provided for the gas-liquid two-phase contact, the strong mass transfer is formed, and the absorption efficiency is high; in addition, the gas distribution is uniform under the conditions of high spray density and large free sectional area, so that uniform gas-liquid contact can be ensured, and the condition of local cutoff can not occur.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Example (b):

as shown in fig. 1, an embodiment of the present invention provides a compound adiabatic evaporation tower, which includes a vertical cylinder, a flue gas inlet, a grid plate and a spraying device;

In the embodiment, the tower body of the tower is a vertical cylinder, the flue gas enters the tower from a flue gas inlet at the bottom of the tower, the spray liquid sprays downwards from a spray device at the middle upper part of the tower, no accessories such as filler and the like exist in the tower, the gas and the liquid are in reverse contact and meet through flow grids, the gas-liquid contact area can be effectively increased, a sufficient specific surface area is provided for gas-liquid two-phase contact, strong mass transfer is formed, and the absorption efficiency is high; in addition, the gas distribution is uniform under the conditions of high spray density and large free sectional area, so that uniform gas-liquid contact can be ensured, and the condition of local cutoff cannot occur.

In order to further improve the evaporation effect of the acidic water, in the embodiment of the present invention, as shown in fig. 1, the grid plates include an upper grid plate and a lower grid plate. The embodiment of the utility model provides a grid tray simple structure can adopt the GFRP preparation, easily processes, and installation, maintenance are convenient, the small investment.

Because the spraying device is matched with the grid plate and is used in a matched way, the spraying devices are respectively arranged above the upper grid plate and the lower grid plate, namely the double-layer spraying devices are correspondingly arranged.

Wherein, as shown in fig. 1, any spraying device comprises a spray head and a distributor;

The embodiment of the utility model provides a still consider: the circular plate with a plurality of holes is used for intercepting the flue gas in the tower so as to generate forced interference on the original flowing state of the flue gas in the tower and optimize the distribution of the gas in the tower.

Specifically, as shown in fig. 1, the compound adiabatic evaporation tower further comprises a porous intercepting gas distribution cover;

the porous intercepting gas distribution cover is positioned above the flue gas inlet and below the lower grid plate; the periphery of the porous interception gas distribution cover is fixedly connected with the inner wall of the vertical cylinder body.

Because the gas velocities of all points in the tower are different, the sizes of the holes at different positions along the radial direction of the tower are different, the holes in the high gas velocity area are small, and the holes in the low gas velocity area are large. Therefore, the porous intercepting and gas distributing cover is small in the open pore of the gas outlet end close to the flue gas inlet and large in the open pore of the gas outlet end far away from the flue gas inlet. For example, if the gas outlet end of the flue gas inlet is close to the central axis of the vertical barrel, the size of the opening of the porous intercepting and gas distributing cover is set to gradually expand along the central axis in the circumferential direction.

In addition, as shown in fig. 1, the combined type heat insulation evaporation tower further comprises a mist eliminator, wherein the mist eliminator is located at the uppermost position in the vertical barrel body, and the periphery of the mist eliminator is fixedly connected with the inner wall of the vertical barrel body. The mist eliminator is specifically arranged in the liquid drop that the gas was smugglied secretly in the knockout tower to guarantee there is mass transfer efficiency, reduce the operation of valuable material loss and improvement post-tower compressor, the utility model discloses can select to adopt the silk screen mist eliminator in the example.

In summary, compared with the prior art, the method has the following beneficial effects:

1. the low-temperature flue gas is introduced through the flue gas inlet, the acidic water is introduced through the spraying device, and the gas phase and the liquid phase meet at the flow grid plate, so that the gas-liquid contact area can be effectively increased, the sufficient specific surface area is provided for the gas-liquid two-phase contact, the strong mass transfer is formed, and the absorption efficiency is high;

2. in addition, the gas distribution is uniform under the conditions of high spray density and large free sectional area, so that uniform gas-liquid contact can be ensured, and the condition of local cutoff can not occur.

3. The mist eliminator is positioned at the uppermost part in the vertical barrel body, and the periphery of the mist eliminator is fixedly connected with the inner wall of the vertical barrel body. The mist eliminator is particularly useful for separating liquid droplets entrained in a gas in a column to ensure mass transfer efficiency, reduce loss of valuable material and improve operation of a compressor after the column.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A combined type heat insulation evaporation tower is characterized by comprising a vertical cylinder body, a flue gas inlet, a grid plate and a spraying device;

2. The thermally insulated hybrid vaporization tower of claim 1, wherein the spray means comprises a spray head and a distributor;

3. The thermally insulated hybrid evaporation tower of claim 1, wherein said louvers comprise an upper louver and a lower louver.

4. The composite adiabatic evaporative tower of claim 3, further comprising a porous cutoff gas distribution hood;

5. The thermally insulated hybrid vaporization tower of claim 4,

the porous intercepting and gas distributing cover is small in open pore at the gas outlet end close to the flue gas inlet and large in open pore at the gas outlet end far away from the flue gas inlet.

6. The compound adiabatic evaporation tower of claim 3, further comprising a mist eliminator;

7. The thermally insulated hybrid evaporation tower of claim 6, wherein said frother comprises a wire mesh mist eliminator.