RU162509U1 - DIPPER - Google Patents

Abstract

1. A droplet eliminator comprising a housing, an inlet pipe located coaxially inside the lower part of the housing to form an annular chamber between the housing and the inlet pipe and equipped with a swirl, an expansion nozzle located in the upper part of the housing coaxially to the outside to form an annular chamber between the housing and the nozzle , an outlet pipe connected to an expansion nozzle, and liquid discharge pipes located at the bottom of the annular chambers, characterized in that the housing is equipped with an irrigation device, shaped in the form of at least one irrigation nozzle and a divider functionally interacting with it installed in an annular chamber between the housing and the inlet pipe, the expansion nozzle is equipped with an irrigation device made in the form of at least one irrigation nozzle and functionally interacting with it a divider installed in the annular chamber between the housing and the expansion nozzle, while the swirl is equipped with rotary guide vanes that are mounted on a rotary shafts. 2. A droplet eliminator according to claim 1, characterized in that the irrigation nozzles are mounted outside the housing and outside the expansion nozzle is diametrically opposite to the liquid nozzles, while the bottom of the annular chambers is inclined towards the latter. 3. A droplet eliminator according to claim 2, characterized in that the irrigation nozzles are additionally mounted outside the housing and outside the expansion nozzle above the nozzles for draining the liquid. 4. Drop eliminator according to claim 2 or 3, characterized in that the irrigation nozzles are equipped with removable end caps

Description

The inventive object relates to a device for collecting droplet liquid from a gas stream and can be used in metallurgy in wet gas cleaning systems.

The closest set of features to the claimed object is a droplet eliminator selected as a prototype, comprising a housing, an inlet pipe, an expansion nozzle, an outlet pipe connected to the expansion nozzle, and nozzles for draining the trapped fluid from the housing and the expansion nozzle. The inlet pipe is placed inside the housing in its lower part coaxially with it, forms an annular chamber with the housing and is equipped at the end with a swirl. The swirl is made in the form of a twisting nozzle, the guides of which are rigidly fixed in one position. An expansion nozzle is placed outside the housing in its upper part coaxially with it and forms an annular chamber with the housing. A nozzle for draining the trapped fluid from the housing is located in the bottom of the annular chamber between the housing and the inlet pipe, and a nozzle for draining the trapped fluid from the expansion nozzle is located in the bottom of the annular chamber between the housing and the expansion nozzle (Ed. St. USSR 341530, publ. 06/14/1972 Bull. 19).

The claimed object and prototype coincide with such essential features. Both droplet eliminators contain a casing, an inlet pipe located coaxially inside the bottom of the casing with the formation of an annular chamber between the casing and the inlet pipe and equipped with a swirl, an expansion nozzle placed in the upper part of the casing coaxially to it from the outside with the formation of an annular chamber between the casing and the nozzle, and the outlet a pipe connected to the expansion chamber, and nozzles for draining the liquid located in the bottom of the annular chambers.

Analysis of the technical properties of the prototype, due to its features, shows that the receipt of the expected technical result when using the prototype is impeded by such reasons. During operation, the trapped liquid with dust particles is lowered into the annular chambers. Moreover, due to its low fluidity and the absence of forced flushing, accumulation of sludge occurs on the walls and bottom of the annular chambers, as well as clogging of the nozzles to drain the trapped fluid. Further, the annular chambers are overfilled with the trapped fluid and they become overgrown with sludge, which leads to the reverse flow of the trapped fluid with dust, on the one hand, from the housing to the inlet pipe, and on the other hand, from the expansion nozzle into the housing. As a result of this, there is an additional saturation of the gas stream with both liquid and dust. For cleaning and repairs, it is necessary to cut the prototype case, which leads to an increase in their complexity and an increase in the time spent on their implementation. Rigid fixation of the guides in the swirling nozzle of the swirl does not allow you to adjust the degree of twisting of the gas stream depending on the specific operating conditions, as well as to regulate its flow. All this leads to a decrease in the efficiency of catching droplet liquid, to an increase in the number of unplanned stops of the droplet eliminator for repair and cleaning, to an increase in the time spent on such repairs and cleaning and complicates these processes, and this, in turn, leads to a decrease in the reliability of the droplet eliminator as a whole.

The claimed object is based on the task of creating a droplet eliminator in which improvements by introducing new elements will allow using the inventive object to achieve a technical result consisting in improving the reliability of the droplet eliminator while simplifying its maintenance and increasing the efficiency of trapping droplet liquid.

The inventive droplet eliminator comprises a housing, an inlet pipe located in the lower part of the housing coaxially to it inside to form an annular chamber between the housing and the inlet pipe and equipped with a swirl, an expansion nozzle located in the upper part of the housing coaxially to it from the outside with the formation of an annular chamber between the housing and the nozzle, an outlet a pipe connected to the expansion nozzle, and nozzles for draining the liquid located in the bottom of the annular chambers. A distinctive feature of the inventive droplet eliminator is the following. The housing is equipped with an irrigation device made in the form of at least one irrigation nozzle and a functionally interacting divider installed in an annular chamber between the housing and the inlet pipe. The expansion nozzle is also equipped with an irrigation device made in the form of at least one irrigation nozzle and a divider functionally interacting with it, mounted in an annular chamber between the body and the expansion nozzle. In this case, the swirl is equipped with rotary guide vanes, which are mounted in the center on the rotary shafts.

In some cases, the use of the claimed object is characterized in that:

- irrigation nozzles are mounted outside the housing and outside the expansion nozzle diametrically opposite to the nozzles for draining the liquid, while the bottom of the annular chambers is made inclined towards the latter;

- irrigation nozzles are additionally mounted outside the housing and outside the expansion nozzle above the nozzles for draining the liquid;

- irrigation nozzles are equipped with removable end caps;

- irrigation nozzles are removable;

- irrigation nozzles are slotted or involute;

- the casing and the expansion nozzle are equipped with technological hatches.

When using the inventive object, the achievement of a technical result is achieved, which consists in increasing the reliability of the drip tray. In addition, when using the inventive object, an additional technical result is achieved, which consists in increasing the efficiency of catching the droplet liquid from the gas stream, in simplifying maintenance and in reducing the number of unplanned stops of the droplet eliminator for repairs, in particular for cleaning from deposits, as well as in reducing time costs at his service.

Between the set of essential features of the claimed object and the achieved technical result there is such a causal relationship.

The equipment of the body and the expansion nozzle with irrigation devices, each of which is made in the form of at least one irrigation nozzle and a divider functionally interacting with it, makes it possible to forcibly flush the trapped liquid with dust particles from the walls and the bottom of the annular chambers, to ensure a constant flow of water along the bottom annular chambers, a constant flow rate of nozzles for draining fluid. All this prevents the formation of sludge deposits on the walls and bottom of the annular chambers, as well as clogging of the nozzles for draining the liquid, which, in turn, prevents sludge from the annular chambers and the output of the claimed object from the dripping mode (cleaning the gas stream from liquid droplets). At the same time, the use of dividers in irrigation devices, which are placed in the annular chambers opposite the nozzles and which functionally interact with them, makes it possible to most efficiently distribute the flow of irrigating liquid, increase the efficiency and density of washing the walls and bottom of the annular chambers, and protect the inlet pipe and body from the irrigation jet liquids. All this provides a reduction in the number of unplanned stops of the droplet eliminator for repairs, in particular for cleaning from deposits, simplifying maintenance, as well as improving the reliability of the droplet eliminator while increasing the efficiency of trapping droplet liquid from the gas stream by preventing sludge ring rings.

The implementation of the swirl in the form of rotary guide vanes mounted on the end of the inlet pipe, which are fixed in the center on the rotary shafts and the position of which can be adjusted depending on the technological features, allows you to adjust the degree of twisting of the gas flow in the hood, as well as carry out flexible gas flow control, up to complete cessation of its duct by completely blocking the inlet pipe. Depending on the operating conditions, this helps to simplify the process of changing the position of the guide vanes, increase the efficiency of trapping droplet liquid from the gas stream, as well as the most effective process for dropping liquid droplets with dust particles to the walls of the housing and lowering them into the annular chamber while preventing them from freezing with the formation sludge deposits. All this provides a reduction in the number of unplanned stops of the droplet eliminator for repair and cleaning, simplifies maintenance, and also increases the reliability of the droplet eliminator as a whole.

The installation of irrigation nozzles on the outside of the casing and on the outside of the expansion nozzle is diametrically opposite to the nozzles for draining the liquid and the bottom of the annular chambers inclined towards these nozzles helps to increase the flow rate of the irrigating fluid in the annular chambers, increase the flow rate in the nozzles for draining the liquid, and also reduces the likelihood of freezing (retention) of sludge deposits at the bottom of the annular chambers. All this provides a reduction in the number of unplanned stops of the droplet eliminator for repairs, in particular for cleaning from deposits, simplifying maintenance, as well as improving the reliability of the droplet eliminator while increasing the efficiency of trapping droplet liquid from the gas stream by preventing sludge ring rings.

Due to the additional installation of nozzles on the outside of the housing and on the outside of the expansion nozzle above the nozzles for liquid drainage, an additional washing of the bottom of the annular chambers from the diametrically opposite side from the location of the main nozzles is provided. The additional spraying of water directly above the nozzles for the gadfly of the trapped liquid additionally prevents their sludge, provides additional moistening and softening of sludge deposits moving to the nozzles. All this provides a reduction in the number of unplanned stops of the droplet eliminator for repairs, in particular cleaning from deposits, simplification of maintenance, as well as improving the reliability of the droplet eliminator while increasing the efficiency of trapping droplet liquid from the gas stream by preventing sludge from the bottom of the annular chambers and nozzles for draining the trapped liquid.

The equipment of irrigation nozzles with removable end caps simplifies and reduces the time spent on cleaning them, and also allows this to be done both when removing them and without removing them from the drip catcher. The implementation of removable irrigation nozzles simplifies the process of mounting and dismounting them, for example, for cleaning. The use of slotted or involute irrigation nozzles ensures the most efficient flow of water to the annular chambers with a flat or hollow irrigation torch, respectively, and washing off deposits. All this provides an increase in the reliability of the drip eliminator, simplification of maintenance, as well as an increase in the efficiency of trapping droplet liquid from the gas stream by preventing sludge from annular chambers and nozzles for draining the trapped liquid.

Due to the equipment of the casing and the expansion nozzle with technological hatches, the possibility of inspecting the drip tray during planned stops and, if necessary, maintenance is simply provided in a constructive way. All this provides a reduction in the number of unplanned stops of the droplet eliminator for repairs, in particular for cleaning from deposits, simplifying maintenance, as well as improving the reliability of the droplet eliminator while increasing the efficiency of catching droplet liquid from the gas stream by timely detection of deposits and their removal.

The essence of the claimed object is illustrated by drawings, which depict:

- in FIG. 1 - general view of a droplet eliminator;

- in FIG. 2 is a section AA in FIG. one.

The following notation is affixed to the drawings:

1 - housing;

2 - inlet pipe;

3 - expansion nozzle;

4 - output pipe;

5 - pipe for fluid drainage;

6 - pipe for fluid drainage;

7 - annular chamber;

8 - swirl;

9 - the bottom of the annular chamber;

10 - annular chamber

11 - the bottom of the annular chamber;

12 - irrigation nozzle;

13 - divider;

14 - irrigation nozzle;

15 - divider;

16 - rotary guide vane;

17 - a rotary shaft;

18 - technological hatch;

19 - technological hatch;

20 - end cap;

21 - irrigation nozzle;

22 - divider;

23 - irrigation nozzle;

24 - divider.

In a specific example, the inventive droplet eliminator comprises a vertically mounted cylindrical body 1 with an inlet pipe 2, an expansion nozzle 3, an outlet pipe 4 connected to an expansion nozzle 3, a nozzle 5 for draining the trapped liquid from the housing 1 and a nozzle 6 for draining the trapped fluid from the expansion nozzle 3 The inlet pipe 2 is placed inside the housing 1 in its lower part coaxially with the formation of an annular chamber 7 between the housing 1 and the inlet pipe 2 and is equipped at the end with a swirler 8. A pipe 5 for withdrawal liquid from the housing 1 is placed in the bottom 9 of the annular chamber 7. In this case, the bottom 9 of the annular chamber 7 is made inclined towards the nozzle 5, and the nozzle 5 is placed in the bottom 9 so that its axis coincides with the line of the inclined bottom 9. The expansion nozzle 3 is placed outside the casing 2 in its upper part coaxially with the formation of an annular chamber 10 between the casing 1 and the expansion nozzle 3. A pipe 6 for draining the trapped fluid from the expansion nozzle 3 is placed in the bottom 11 of the annular chamber 10. The bottom 11 of the annular chamber 10 is made inclined in the defense of the pipe 6, and the pipe 6 is placed in the bottom 11 so that its axis coincides with the line of the inclined bottom 11.

The housing 1 is equipped with an irrigation device, which is an irrigation nozzle 12 and a nozzle 13 functionally interacting with each other. An irrigation nozzle 12 is installed outside the housing 1 near the bottom 9 and is diametrically opposite to the nozzle 5 for draining the liquid, and the nozzle 13 is installed in the annular chamber 7 opposite the nozzle 12 and fixed on the inlet pipe 2 and the bottom 9, while its side parts are made concave to the inlet pipe 2, and the dissecting face is aligned with the axis of the irrigation nozzle 12 (Fig. 2).

The expansion nozzle 3 is also equipped with an irrigation device, which is an irrigation nozzle 14 and a divider 15 which are functionally interacting with each other. The irrigation nozzle 14 is installed outside the expansion nozzle 3 near the bottom 11 and is diametrically opposite to the liquid outlet 6, and the divider 15 is opposite in the annular chamber 10 the nozzle 14, mounted on the housing 1 and the bottom 11, while its side parts are made concave to the housing 1, and the dissecting face is aligned with the axis of the irrigation nozzle fourteen.

Depending on the specific operating conditions, the size of the droplet eliminator and the calculated gas flow rate, the irrigation device of the housing 1 and the irrigation device of the expansion nozzle 3 can be equipped with several irrigation nozzles and functionally interacting dividers that can be installed at predetermined points around the circumference of the housing 1 and the expansion nozzle 3.

The swirl 8 is made in the form of rotary guide vanes 16 for swirling the gas stream, which are located on the end of the inlet pipe 2 and are fixed with their central part on the rotary shafts 17. Each blade 16 is mounted on its own rotary shaft 17. The rotary shafts 17 are mounted coaxially in the housing 1 , the inlet pipe 2 and the central support of the swirl 8 with gas tightness and the possibility of rotation around its axis to change the position of the blades 16.

In addition, the housing 1 in the lower part above the swirl 10 is equipped with a technological hatch 18, and the expansion nozzle 3 in the region of the upper end of the housing 1 is equipped with a technological hatch 19.

Irrigation nozzles 12 and 14 are equipped with removable end caps 20, fixed, for example, using a flange-bolt connection.

In some cases of execution (Fig. 3), the housing 1 can be additionally equipped with an irrigation nozzle 21 and a divider 22 functionally interacting with it, and the expansion nozzle 3 can be additionally equipped with an irrigation nozzle 23 and a divider functionally interacting with it 24. The irrigation nozzle 21 is installed outside the housing 1 near the bottom 9 above the pipe 5 for draining the fluid diametrically opposite to the nozzle 12, and the divider 22 is installed in the annular chamber 7 opposite the nozzle 21, mounted on the inlet pipe 2 and the bottom 9, while its side parts are concave to the inlet pipe 2, and the cutting edge is aligned with the axis of the irrigation nozzle 21. The irrigation nozzle 23 is installed outside the expansion nozzle 3 near the bottom 11 above the nozzle 6 diametrically opposite to the nozzle 14, and the divider 24 is installed in the annular chamber 10 opposite the nozzle 23, is mounted on the housing 1 and the bottom 11, while its side parts are concave to the housing 1, and the dissecting face is aligned with the axis of the irrigation nozzle 23. Irrigation nozzles 21 and 23 are also equipped with end and plugs 20, fastened, for example, using a flange-bolt connection.

Depending on the operating conditions, irrigation nozzles 12, 14, 21, 23 can be installed as stationary (they are fixed, for example, welded), so they can also be removable, for example, fixed with a flange-bolt connection.

Depending on operating conditions, irrigation nozzles 12, 14, 21, 23 can be made slotted or involute. In a specific manufacturing example, irrigation nozzles 12, 14, 22, 23 are slotted.

The inventive object operates as follows. The gas stream with suspended drops of liquid through the inlet pipe 2 enters the swirl 8, passes through the rotary guide vanes 16 and swirls, the liquid drops from the gas stream are thrown to the walls of the housing 1, flow down and along the inclined bottom 9 of the annular chamber 7 are directed to the pipe 5, through which they are relegated. When changing the position of the rotary guide vanes 16 in the swirler 8, it is possible to control, for example during commissioning, the degree of twisting of the gas stream to increase the efficiency of trapping droplet liquid and reduce the removal of droplets with particles of sludge. Such regulation can be carried out both during commissioning and during operation of the inventive droplet eliminator, both automatically using an electroautomatics system (not shown in the drawings), or in manual mode. In addition, the blades 16 provide the ability to control the gas flow rate by changing the cross section of the inlet pipe 2 for the passage of the gas stream, up to its complete overlap. When a swirling gas stream from the housing 1 gets into a large expansion nozzle 3, the gas stream suddenly expands and its speed decreases. As a result of this, the moisture film is detached, which moves through the inner surface of the housing 1 in the direction of the outlet pipe 4 by gas flow, then the liquid falls down along the walls of the annular chamber 10 and flows down the inclined bottom AND of the annular chamber 10 to the nozzle 6 through which it allotted. Next, after the expansion nozzle 3, the gas stream is discharged from the droplet eliminator through the outlet pipe 4.

During operation of the inventive droplet eliminator from the irrigation nozzle 12, water is constantly supplied to the annular chamber 7, which is evenly distributed by the divider 13 along the inclined bottom 9. The resulting flows rush from the divider 13 to the right and left along the annular chamber 7, ensuring the washing of the inlet pipe 2 from the side of the annular chamber 7 and bottom 9. This ensures a constant flow of water along the bottom 9 of the annular chamber 7, its washing, forced washing of the trapped liquid with particles of sludge into the nozzle 5, and is also prevented formation of stagnant zones for accumulation of sludge, in particular in the bottom zone of adjacency 9 to the inlet pipe 2, and to prevent sludging 5 lads.

With the additional equipment of the housing 1 with an irrigation nozzle 21, which is located diametrically opposite the nozzle 12 above the nozzle 5 and functionally interacts with the divider 22, an additional washing of the annular chamber 7 is provided from the diametrically opposite side of the location of the nozzle 12. The resulting flows rush from the divider 22 to the right and left the annular chamber 7, providing the washing of the inlet pipe 2 from the side of the annular chamber 7 and the bottom 9. In this case, the flows are lowered along the inlet pipe 2 to the bottom 9, additional significantly increasing the efficiency of washing and ensuring the flow of water along the bottom 9 of the annular chamber 7. Additional spraying of water directly above the nozzle 5 prevents the accumulation of sludge in its area and additionally prevents its sludge, provides additional moistening and softening of sludge deposits moving to the nozzle 5. In particular, breaking and reducing the size of sludge conglomerates. This prevents the accumulation of sludge deposits in the lower part of the annular chamber.

Similar processes occur in the annular chamber 10 of the expansion nozzle 3 during irrigation from the irrigation nozzle 14 (Fig. 1) or joint irrigation from the irrigation nozzle 14 and the irrigation nozzle 23, which is placed diametrically opposite to the irrigation nozzle 14 above the nozzle 6 for draining liquid ( Fig. 3).

Permanent flushing prevents the formation of large conglomerates of sludge, the detachment of which and rolling them along an inclined bottom 9 and / or 11 could lead to the overlap of the pipe 5 and / or 6, the subsequent overflow of the annular chambers 7 and / or 10 with the trapped liquid with particles of the sludge and the withdrawal of the claimed object from the process of dropping.

The use of slotted nozzles provides the washing of the annular chambers 7 and 10 with an integral irrigation torch and is most suitable for a gas stream with a large residual content of heavy dust particles, which are highly prone to freezing and the formation of large conglomerates. The use of involute nozzles provides the washing of the annular chambers 7 and 10 with a hollow irrigation torch and is most suitable for a gas stream with a small residual content of dust particles, which are easily washed off.

During operation, inspection and maintenance, for example cleaning, of the internal parts of the inventive droplet eliminator is carried out through technological hatches 18 and 19, which simplifies and reduces the time spent on these operations.

During operation, irrigation nozzles 12, 14, 21, and 23 need to be cleaned or replaced. The equipment of the nozzles with a removable end cap 20 simplifies and reduces the time spent on cleaning, which can be done either with or without removing the nozzles from the droplet eliminator. And the installation of nozzles on the outside of the housing and the expansion nozzle, as well as their removable execution simplifies the process of inspecting their condition, as well as mounting and dismounting while reducing time costs.

By preventing the formation of slurry deposits in the annular chambers 7 and 10 and clogging of the nozzles 5 and 6 to drain the trapped liquid, as well as by simplifying inspections and maintenance, the reliability of the inventive drip tray, the reduction in the number of unplanned stops for repairs and the efficiency of catching droplets are improved liquids

Claims (7)

1. A droplet eliminator comprising a housing, an inlet pipe located coaxially inside the lower part of the housing to form an annular chamber between the housing and the inlet pipe and equipped with a swirl, an expansion nozzle located in the upper part of the housing coaxially to the outside to form an annular chamber between the housing and the nozzle , an outlet pipe connected to an expansion nozzle, and liquid discharge pipes located at the bottom of the annular chambers, characterized in that the housing is equipped with an irrigation device, shaped in the form of at least one irrigation nozzle and a divider functionally interacting with it installed in an annular chamber between the housing and the inlet pipe, the expansion nozzle is equipped with an irrigation device made in the form of at least one irrigation nozzle and functionally interacting with it a divider installed in the annular chamber between the housing and the expansion nozzle, while the swirl is equipped with rotary guide vanes that are mounted on a rotary th shafts. 2. A droplet eliminator according to claim 1, characterized in that the irrigation nozzles are mounted outside the housing and outside the expansion nozzle diametrically opposite to the liquid nozzles, while the bottom of the annular chambers is inclined toward the latter. 3. Drop eliminator according to claim 2, characterized in that the irrigation nozzles are additionally mounted outside the housing and outside the expansion nozzle above the nozzles for draining the liquid. 4. Drop eliminator according to claim 2 or 3, characterized in that the irrigation nozzles are equipped with removable end caps. 5. Drop eliminator according to claim 2 or 3, characterized in that the irrigation nozzles are removable. 6. Drop eliminator according to paragraphs. 1-3, characterized in that the irrigation nozzles are slotted or involute. 7. Drop eliminator according to paragraphs. 1-3, characterized in that the housing and the expansion nozzle are equipped with technological hatches.

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