CN219518338U - Urea blowdown tail gas washing device - Google Patents

Abstract

The utility model relates to a urea emptying tail gas washing device, which comprises a pipe body for discharging tail gas, a spraying assembly, a flow dividing assembly and a flow dividing assembly, wherein one end of the spraying assembly extends to a spraying part in the pipe body, the flow dividing assembly comprises a drainage part and a flow guiding part which are arranged in the pipe body up and down, the drainage part and the flow guiding part are both positioned above the spraying part, a barrier can be arranged in the direction of gas flow in the pipe body through the cooperation of the flow guiding part and the pipe body, the gas flow is greatly slowed down, the spraying part is matched for washing the tail gas, absorbing gas and ammonia, then the drainage part forms smaller barrier to the tail gas, and the comprehensive washing of the gas and the ammonia in the tail gas of the emptying pipe is realized through the secondary washing of the spraying part, so that the urea production consumption is reduced, and the influence on the environment is reduced.

Description

Urea blowdown tail gas washing device

Technical Field

The utility model relates to the field of urea production tail gas treatment, in particular to a urea emptying tail gas washing device.

Background

In the industrial production process, the blow-down pipe is a part for discharging the medium which damages normal operation and maintenance in equipment such as a container, a pipeline and the like, and takes urea production as an example, inert gas in production equipment is discharged through the blow-down pipe, so that the pressure in the equipment is reduced, the heating efficiency is improved, and the normal production of urea is ensured.

The existing production has the defects that the tail gas of the urea blow-down pipe has certain ammonia smell, high consumption for urea production and certain influence on environmental protection, and the conventional treatment mode is that an atomization spray nozzle is arranged in a blow-down pipeline, gas ammonia in the tail gas is absorbed through atomized soft water, and the absorption liquid is recovered through a hydrolysis device, but because the blow-down pipe is a pressure relief exhaust device, after the fast flowing gas passes through the atomization spray nozzle, the gas ammonia in the tail gas is possibly absorbed incompletely, the urea production consumption is still caused, and the influence on the surrounding environment is generated.

Disclosure of Invention

Based on the above description, the utility model provides a urea emptying tail gas washing device, so as to solve the problems that the urea production consumption is still caused and the surrounding environment is influenced because the emptying pipe is the inert gas in the pressure relief and discharge equipment and the gas flowing rapidly possibly has incomplete absorption of gas ammonia in the tail gas after passing through the atomizing nozzle.

The technical scheme for solving the technical problems is as follows:

the urea blowdown tail gas washing device comprises a pipe body for discharging tail gas:

the spraying assembly comprises a plurality of spraying parts of which one ends extend into the pipe body;

the diversion assembly comprises a drainage part and a diversion part which are arranged in the pipe body up and down, and the drainage part and the diversion part are both positioned above the spraying part.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, a fixing piece is arranged at the other end of the spraying part, and the spraying part is arranged on the pipe body through the fixing piece.

Further, a plurality of mounting holes are formed in the pipe body, and the mounting holes correspond to the spraying portions.

Further, the drainage portion comprises a first mounting plate arranged in the mounting hole, a drainage plate arranged on the first mounting plate and a drainage ring arranged between the first mounting plate and the drainage plate.

Further, the drainage plate is tightly attached to the inner wall of the pipe body, and the drainage ring surrounds the outer part of the spraying part.

Further, the guide part comprises a second mounting plate arranged in the mounting hole, a guide plate arranged on the second mounting plate and a guide ring arranged between the guide plate and the second mounting plate.

Furthermore, a space is reserved between the guide plate and the pipe body, a connecting block is arranged between the second mounting plate and the guide plate, and the guide ring surrounds the outside of the spraying part.

Further, a water trough communicated with the interval is formed above the guide ring, and a drain hole communicated with the water trough is formed at the bottom of the guide ring.

Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:

according to the utility model, by arranging the spraying assembly and the flow dividing assembly and matching the flow guiding part with the pipe body, a barrier is arranged in the direction of gas flow in the pipe body, the gas flow is increased and slowed down, the spraying part is matched for washing tail gas to absorb gas ammonia, then the flow guiding part forms smaller barrier to the tail gas, and the spraying part is used for washing the tail gas for the second time, so that the comprehensive washing of the gas ammonia in the tail gas of the blow-down pipe is realized, the urea production consumption is reduced, and the influence on the environment is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a urea emptying tail gas washing device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic view of a drainage portion according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a flow guiding portion according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a connection structure between a flow splitting assembly and a pipe body according to an embodiment of the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1. a tube body; 2. a spray assembly; 21. a spraying part; 22. a fixing member; 3. a shunt assembly; 31. a drainage part; 311. a first mounting plate; 312. a drainage plate; 313. a drainage ring; 32. a flow guiding part; 321. a second mounting plate; 322. a deflector; 323. a guide ring.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Embodiments of the utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

It will be appreciated that spatially relative terms such as "under … …," "under … …," "below," "under … …," "over … …," "above," and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "under … …" and "under … …" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

Referring to fig. 1-5, the urea emptying tail gas washing device comprises a pipe body 1 for tail gas discharge, a spraying assembly 2 and a diversion assembly 3, wherein the spraying assembly 2 comprises a spraying part 21 with one end extending into the pipe body 1, the diversion assembly 3 comprises a drainage part 31 and a diversion part 32 which are arranged in the pipe body 1 up and down, and the drainage part 31 and the diversion part 32 are both positioned above the spraying part 32.

Based on prior art atomizer installation in the blow-down pipe, just to the tail gas blowout atomizing soft water of discharging, absorb the gas ammonia in the tail gas, absorption liquid rethread hydrolysis unit retrieves, and this implementation is in the case that spray portion 21 sets up in body 1, through setting up drainage portion 31 and the water conservancy diversion portion 32 of reposition of redundant personnel in corresponding position spray portion 21, water conservancy diversion portion 32 is preceding on the gas delivery orbit, and drainage portion 31 is later.

When equipment discharges tail gas through the pipe body 1, the guide part 32 can hinder the gas to pass through when playing the reposition of redundant personnel effect for great suspension appears in the gas, and then cooperates spray part 21 blowout atomized soft water to absorb the gaseous ammonia of gas, and the tail gas through guide part 32 flows to the guide part 31, can appear shorter suspension, cooperates spray part 21 to spout atomized soft water again and absorbs gaseous ammonia afterwards, finally discharges through pipe body 1, realizes the comprehensive washing of gaseous ammonia in the blow-down pipe tail gas after, reduces urea production consumption, reduces the influence to the environment.

Further, a fixing piece 22 is arranged at the other end of the spraying part 21, and the spraying part 21 is arranged on the pipe body 1 through the fixing piece 22.

Based on the above-mentioned tail gas entering the pipe body 1 and going to the reposition of redundant personnel of water conservancy diversion portion 32 and drainage portion 31 successively, gas suspension one side appears, and this implementation is installed spray portion 21 on pipe body 1 through the mounting, and the one end that extends to pipe body 1 is bent just to water conservancy diversion portion 32 and drainage portion 31, and spray portion 21 shower nozzle level sets up simultaneously, and then cooperates suspension one side tail gas, and the blowout atomized soft water absorbs gas ammonia.

Further, the pipe body 1 is provided with a plurality of mounting holes, the mounting holes correspond to the spraying parts 21, the drainage parts 31 comprise a first mounting plate 311 arranged in the mounting holes, a drainage plate 312 arranged on the first mounting plate 311 and a drainage ring 313 arranged between the first mounting plate 311 and the drainage plate 312, the drainage plate 312 is tightly attached to the inner wall of the pipe body 1, and the drainage ring 313 surrounds the outside of the spraying parts 21.

On the basis of the horizontal arrangement of the spray head of the spray part 21, the present embodiment adopts the drainage ring 313 to surround the outside of the spray part 21, so that the tail gas on one side of suspension can be concentrated below the drainage plate 312, and the atomized soft water sprayed horizontally is matched to absorb the gas ammonia in the tail gas.

Since the soft water sprayed by the spraying part 21 stays on the drainage ring 313 finally, in order to better guide the absorption liquid, the absorption liquid is reduced to directly drop onto the guiding part 32, and the drainage ring 313 adopts an inward concave design mode, so that the liquid flows onto the inner wall of the pipe body 1 along the inner wall, and the absorption liquid is reduced to directly drop.

Further, the flow guiding portion 32 includes a second mounting plate 321 disposed in the mounting hole, a flow guiding plate 322 disposed on the second mounting plate 321, and a flow guiding ring 323 disposed between the flow guiding plate 322 and the second mounting plate 321, a space is reserved between the flow guiding plate 322 and the pipe body 1, a connection block is disposed between the second mounting plate 321 and the flow guiding plate 322, and the flow guiding ring 323 surrounds the spray portion 21.

Based on the fact that the tail gas is greatly suspended through the guide part 32, a plurality of bent diversion holes are formed in the guide plate 322, the gas passing is prevented from being increased, the condition that the gas is on one side of the guide plate 322 is suspended is further achieved, and then atomized soft water is sprayed out through the spraying part 21 to absorb gas ammonia under the cooperation of the guide ring 323.

Considering that the baffle 322 cannot avoid a small amount of absorption liquid drops falling on the upper surface, the upper surface of the baffle 322 is designed to be an arc surface, so that the dropped liquid can be discharged along the arc surface with a certain gradient, the accumulation of the absorption liquid on the baffle 322 is reduced, and the recovery of the absorption liquid is improved.

Further, a water trough communicated with the interval is arranged above the guide ring 323, and a drain hole communicated with the water trough is arranged at the bottom of the guide ring 323.

On the basis that the absorption liquid flows along the inner wall of the pipe body 1, the absorption liquid is collected on one side of the drainage plate 312 through the water trough, meanwhile, the absorption liquid on the drainage plate 322 is recovered, finally, the absorption liquid is discharged through the drain hole, and then, the absorption liquid is treated and recovered through an external hydrolysis device.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (8)

1. The urea emptying tail gas washing device comprises a tube body (1) for discharging tail gas, and is characterized in that,

the spraying assembly (2) comprises a plurality of spraying parts (21) with one ends extending into the pipe body (1);

the diversion assembly (3) comprises a drainage part (31) and a diversion part (32) which are arranged in the pipe body (1) up and down, and the drainage part (31) and the diversion part (32) are both positioned above the spraying part (21).

2. The urea blowdown exhaust gas washing device according to claim 1, characterized in that a fixing piece (22) is provided on the other end of the spraying portion (21), and the spraying portion (21) is provided on the pipe body (1) through the fixing piece (22).

3. The urea blowdown exhaust gas washing device according to claim 2, characterized in that the pipe body (1) is provided with a plurality of mounting holes, and the mounting holes correspond to the spraying parts (21).

4. A urea blow tail gas washing device according to claim 3, characterized in that the drainage part (31) comprises a first mounting plate (311) arranged in the mounting hole, a drainage plate (312) arranged on the first mounting plate (311) and a drainage ring (313) arranged between the first mounting plate (311) and the drainage plate (312).

5. The urea blowdown exhaust gas washing device of claim 4, characterized in that the drainage plate (312) is tightly attached to the inner wall of the pipe body (1), and the drainage ring (313) surrounds the outside of the spraying part (21).

6. A urea blow tail gas washing device according to claim 3, characterized in that the deflector (32) comprises a second mounting plate (321) arranged in the mounting hole, a deflector (322) arranged on the second mounting plate (321) and a deflector ring (323) arranged between the deflector (322) and the second mounting plate (321).

7. The urea blowdown exhaust gas washing device of claim 6, characterized in that a space is left between the guide plate (322) and the pipe body (1), a connecting block is arranged between the second mounting plate (321) and the guide plate (322), and the guide ring (323) surrounds the outside of the spraying part (21).

8. The urea blowdown exhaust gas washing device of claim 7, characterized in that a water trough communicated with the interval is arranged above the guide ring (323), and a drain hole communicated with the water trough is arranged at the bottom of the guide ring (323).