CN213433028U - Vacuum flash system - Google Patents
Vacuum flash system Download PDFInfo
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- CN213433028U CN213433028U CN202022252414.7U CN202022252414U CN213433028U CN 213433028 U CN213433028 U CN 213433028U CN 202022252414 U CN202022252414 U CN 202022252414U CN 213433028 U CN213433028 U CN 213433028U
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Abstract
The utility model discloses a vacuum flash evaporation system, which comprises a vacuum flash evaporation tank, a black water settling tank and a connecting pipe for connecting the lower cone part of the vacuum flash evaporation tank with the black water settling tank; a black water inlet pipe is arranged on the outer peripheral surface of the vacuum flash tank, and an overflow weir is arranged on the inner wall of the vacuum flash tank; the connecting pipe comprises an inner riser section, and the inner riser section extends into the vacuum flash tank. The vacuum flash evaporation system is improved in structure, and is provided with the inner ascending pipe section extending into the lower cone part of the vacuum flash evaporation tank, so that black water entering the vacuum flash evaporation tank flows down to the lower cone part through the overflow weir, overflows to the inner ascending pipe section and flows out from the top of the inner ascending pipe section. The existence of the inner riser pipe section prevents the black water from directly flowing to the lower cone part and smashing and grinding the inner wall; and the structure is changed a little, and economic nature is good. Therefore, the utility model provides a vacuum flash evaporation system improves the vacuum flash evaporation tank, can avoid lower pyramis wearing and tearing to appear, has solved the difficult problem in this field at present stage.
Description
Technical Field
The utility model relates to a vacuum flash tank technical field, more specifically say, relate to a vacuum flash system.
Background
The coal gasification device mainly aims at the coal gasification, and a black water system for washing coal gas enters the system for recycling after passing through a water treatment device in the device so as to improve the utilization rate of water. There are generally two types of black water treatment techniques for water treatment apparatuses in the apparatuses: one is three-stage flash evaporation, namely high-pressure flash evaporation, low-pressure flash evaporation and vacuum flash evaporation; the other is a two-stage flash, i.e. low pressure flash plus vacuum flash. Wherein, the vacuum flash tank is a last stage of flash system, black water enters the vacuum flash tank for further flash concentration, and harmless gas phase is discharged from the top; and discharging the concentrated black water into a black water settling tank from the bottom. However, the black water contains more solid particles and has high turbidity, so the abrasion of the lower cone part of the vacuum flash tank is easily caused in the flash process.
With respect to the prior art, the following method is generally adopted to avoid wear of the lower cone of the vacuum flash tank: the first is to design the pipeline communicating the vacuum flash tank and the black water settling tank into a U shape, install a centrifugal pump on the pipeline, and control the liquid level of the vacuum flash tank through the pump and the front and rear inlet valves and outlet valves thereof, but the equipment cost and maintenance cost are high, the stability is poor, please refer to fig. 2; secondly, the height difference between the vacuum flash tank and the black water settling tank is ensured, and the black water is conveyed to the black water settling tank through the action of gravity, but the design effect is not ideal, so that the lower cone part of the vacuum flash tank is seriously abraded, and please refer to fig. 3; the third is that wear-resistant bushings are added in the vacuum flash tank, but the bushings need to be replaced regularly, so that the cost and the maintenance cost are high, and the overhaul time is long; and the fourth is to adopt wear-resistant materials to manufacture the tank body and increase the wall thickness, but the purchase cost is high, and the wear-through phenomenon still occurs in the vacuum flash tank which runs for a long time.
Therefore, how to improve the vacuum flash tank to avoid the abrasion of the lower cone part is a difficult problem to be solved in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a vacuum flash system, this vacuum flash system improves the vacuum flash tank, can avoid lower pyramis wearing and tearing to appear, has solved the difficult problem in this field of present stage.
A vacuum flash system comprises a vacuum flash tank, a black water settling tank and a connecting pipe for connecting a lower cone of the vacuum flash tank and the black water settling tank; a black water inlet pipe is arranged on the outer peripheral surface of the vacuum flash tank, and an overflow weir is arranged on the inner wall of the vacuum flash tank;
the connecting pipe comprises an inner ascending pipe section, and the inner ascending pipe section extends into the vacuum flash tank.
Preferably, in the vacuum flash system, the upper edge of the inner riser section is serrated.
Preferably, in the vacuum flash evaporation system, the connecting pipe further comprises a dead pipe section and a settling pipe section, and the settling pipe section is communicated with the middle part of the dead pipe section.
Preferably, in the vacuum flash system, the dead pipe section comprises a pipe and a blind flange which are communicated with each other.
Preferably, in the vacuum flash system, the dead pipe section and the inner riser section are vertical, and the settling pipe section and the dead pipe section are perpendicular to each other.
Preferably, in the vacuum flash system, the connecting pipe further includes an introduction pipe section, and the introduction pipe section is perpendicular to the settling pipe section, and is used for introducing black water into the black water settling tank.
Preferably, in the vacuum flash evaporation system, the connecting pipe further comprises an evacuation pipe section, one end of the evacuation pipe section is communicated with the bottom of the vacuum flash evaporation tank, and the other end of the evacuation pipe section is communicated with the settling pipe section.
Preferably, in the vacuum flash evaporation system, a first valve and a second valve are respectively arranged at two ends of the evacuation pipe section.
Preferably, in the vacuum flash evaporation system, a plurality of supporting members are arranged between the outer peripheral surface of the inner riser section and the inner wall of the lower conical part.
Preferably, in the vacuum flash system, when the taper angle of the lower conical part of the vacuum flash tank is 60 degrees, the height of the inner riser section
Wherein: b is the inner diameter of the vacuum flash tank and a is the width of the weir.
The utility model provides a vacuum flash system, which comprises a vacuum flash tank, a black water settling tank and a connecting pipe for connecting the lower cone part of the vacuum flash tank with the black water settling tank; a black water inlet pipe is arranged on the outer peripheral surface of the vacuum flash tank, and an overflow weir is arranged on the inner wall of the vacuum flash tank; the connecting pipe comprises an inner riser section, and the inner riser section extends into the vacuum flash tank. The vacuum flash evaporation system is improved in structure, and is provided with the inner ascending pipe section extending into the lower cone part of the vacuum flash evaporation tank, so that black water entering the vacuum flash evaporation tank flows down to the lower cone part through the overflow weir, overflows to the inner ascending pipe section and flows out from the top of the inner ascending pipe section. The existence of the inner riser pipe section prevents the black water from directly flowing to the lower cone part and smashing and grinding the inner wall; and the structure is changed a little, and economic nature is good. Therefore, the utility model provides a vacuum flash evaporation system improves the vacuum flash evaporation tank, can avoid lower pyramis wearing and tearing to appear, has solved the difficult problem in this field at present stage.
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 a vacuum flash system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first vacuum flash system of the background art of the present invention;
fig. 3 is a schematic diagram of a second vacuum flash evaporation system in the background art of the present invention.
In fig. 1-3:
vacuum flash tank-1; a black water settling tank-2; a lower cone part-3; a black water inlet pipe-4; an overflow weir-5; an inner riser section-6; a dead leg section-7; a settling section-8; an introduction pipe section-9; emptying pipe section-10; a first valve-11; a second valve-12; a support member-13.
Detailed Description
The core of this embodiment lies in providing a vacuum flash system, and this vacuum flash system improves the vacuum flash tank, can avoid the lower pyramis wearing and tearing to appear, has solved the difficult problem in this field at present stage.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
The vacuum flash system provided by the specific embodiment comprises a vacuum flash tank 1, a black water settling tank 2 and a connecting pipe for connecting a lower cone part 3 of the vacuum flash tank 1 and the black water settling tank 2; a black water inlet pipe 4 is arranged on the outer peripheral surface of the vacuum flash tank 1, an overflow weir 5 is arranged on the inner wall of the vacuum flash tank, and the black water inlet pipe 4 and the overflow weir 5 can be two matched ones, please refer to fig. 1; the connecting pipe comprises an inner riser section 6, and the inner riser section 6 extends into the vacuum flash tank 1.
The vacuum flash system is improved in structure of the vacuum flash tank 1, and is provided with the inner riser pipe section 6 extending into the lower cone part 3 of the vacuum flash tank 1, so that black water entering the vacuum flash tank 1 flows down to the lower cone part 3 through the overflow weir 5 and then overflows to the inner riser pipe section 6, and further flows out from the top of the inner riser pipe section 6. The existence of the inner riser pipe section 6 prevents black water from directly flowing to the lower cone part 3 and smashing and grinding the inner wall; and the structure is changed a little, and economic nature is good.
Therefore, the utility model provides a vacuum flash evaporation system improves vacuum flash tank 1, can avoid lower pyramis 3 wearing and tearing to appear, has solved the difficult problem in this field at present stage. Please refer to fig. 1-3.
In the vacuum flash evaporation system provided by the present embodiment, the upper edge of the inner riser section 6 may be designed to be zigzag, as shown in fig. 1, so that the black water overflows into the inner riser section 6 from different heights of the plane, and the black water is prevented from entering the inner riser section 6 at the same plane, thereby preventing the inner riser section 6 from being blocked. Of course, in practical design, the upper edge of the inner riser pipe section 6 may also be designed to be wave-shaped or in other forms that can perform the same function.
In the vacuum flash evaporation system provided by the present embodiment, the connecting pipe may further include a dead leg section 7 and a settling leg section 8, and the settling leg section 8 is communicated with the middle portion of the dead leg section 7, and the dead leg section 7 may include a pipe and a blind flange which are communicated with each other; the purpose of this setting is at the black water of dead leg 7 storage, can further buffer the black water that flows out from vacuum flash tank 1, and then "with black water anti black water", further slows down the wearing and tearing to the pipeline of flowing through to improve vacuum flash system's life.
Further, the dead leg section 7 and the inner riser section 6 of the connecting pipe can be vertical, and the settling leg section 8 can be perpendicular to the dead leg section 7, please refer to fig. 1, the arrangement can facilitate the discharge of black water in the vacuum flash tank 1, and the existence of the dead leg section 7 can reduce the flow velocity of the black water, thereby avoiding the impact on the inner wall of the pipe and the abrasion of the inner wall.
In the vacuum flash evaporation system provided in this embodiment, the connecting pipe may further include an introducing pipe section 9, and the introducing pipe section 9 may be perpendicular to the settling pipe section 8, and is used to introduce the black water into the black water settling tank 2, as shown in fig. 1; the introduction pipe section 9 can directly introduce the black water into the black water settling tank 2 in a certain direction or angle, thereby facilitating the control of the black water flow direction.
Further, the connecting pipe can also comprise an emptying pipe section 10, one end of the emptying pipe section 10 is communicated with the bottom of the vacuum flash tank 1, and the other end of the emptying pipe section 10 is communicated with the settling pipe section 8; the evacuation pipe section 10 may be provided at both ends with a first valve 11 and a second valve 12, respectively.
The arrangement of the evacuation pipe section 10 can realize the cleaning of the black water in the lower cone 3 of the vacuum flash tank 1. When the vacuum flash system is in production operation, the first valve 11 and the second valve 12 are controlled to be closed, and when the system needs to be overhauled, black water stored in the lower cone part 3 can be drained by opening the first valve 11 and the second valve 12.
In the vacuum flash evaporation system provided by the present embodiment, a plurality of supporting members 13 may be disposed between the outer peripheral surface of the inner riser section 6 and the inner wall of the lower cone 3, so as to better support the inner riser section 6, thereby improving the stability of the inner riser section 6; the number of the supporting pieces 13 can be three, and the three supporting pieces 13 can be uniformly distributed on the outer peripheral surface of the inner riser pipe section 6; of course, the number of the supporting members 13 may be other than the same.
In the vacuum flash evaporation system provided by the present embodiment, the taper angle of the lower cone 3 of the vacuum flash tank 1 may be 60 °, and of course, in actual design, the taper angle of the lower cone 3 may be specifically designed according to actual needs to achieve the same effect.
In the vacuum flash evaporation system provided by the present embodiment, when the taper angle of the lower cone 3 of the vacuum flash tank 1 is 60 °, the height of the inner riser section 6 may be set to be
Further better avoiding the abrasion of black water to the inner wall of the lower cone part 3;
wherein: b is the inner diameter of the vacuum flash tank 1, and a is the width of the overflow weir 5; please refer to fig. 1.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A vacuum flash system is characterized by comprising a vacuum flash tank (1), a black water settling tank (2) and a connecting pipe for connecting a lower cone part (3) of the vacuum flash tank (1) and the black water settling tank (2); a black water inlet pipe (4) is arranged on the outer peripheral surface of the vacuum flash tank (1), and an overflow weir (5) is arranged on the inner wall of the vacuum flash tank;
the connecting pipe comprises an inner riser section (6), and the inner riser section (6) extends into the vacuum flash tank (1).
2. A vacuum flash system according to claim 1 wherein the upper edge of the inner riser section (6) is serrated.
3. A vacuum flash system according to claim 1 wherein the connecting pipe further comprises a dead leg (7) and a settling leg (8), and the settling leg (8) communicates with the middle of the dead leg (7).
4. A vacuum flash system according to claim 3 wherein the dead leg (7) comprises a pipe and a blind flange in communication.
5. A vacuum flash system according to claim 3 wherein the dead leg (7) and the inner riser section (6) are vertical and the settling leg (8) and the dead leg (7) are perpendicular to each other.
6. A vacuum flash system according to claim 3 wherein the connecting pipe further comprises an introduction pipe section (9), the introduction pipe section (9) and the settling pipe section (8) being perpendicular to each other for introducing black water into the black water settling tank (2).
7. A vacuum flash system according to claim 3 wherein the connecting pipe further comprises an evacuation pipe section (10), one end of the evacuation pipe section (10) communicating with the bottom of the vacuum flash tank (1) and the other end communicating with the settling pipe section (8).
8. A vacuum flash system according to claim 7 wherein the evacuation pipe section (10) is provided with a first valve (11) and a second valve (12) at each end.
9. A vacuum flash system according to claim 1, wherein a plurality of supports (13) are provided between the outer circumference of the inner riser section (6) and the inner wall of the lower cone (3).
10. A vacuum flash system according to claim 1, wherein the height of the inner riser section (6) is such that the angle of taper (3) of the vacuum flash tank (1) is 60 ° at the bottom of the vessel
Wherein: b is the inner diameter of the vacuum flash tank (1) and a is the width of the overflow weir (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022252414.7U CN213433028U (en) | 2020-10-10 | 2020-10-10 | Vacuum flash system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022252414.7U CN213433028U (en) | 2020-10-10 | 2020-10-10 | Vacuum flash system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213433028U true CN213433028U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022252414.7U Active CN213433028U (en) | 2020-10-10 | 2020-10-10 | Vacuum flash system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213433028U (en) |
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2020
- 2020-10-10 CN CN202022252414.7U patent/CN213433028U/en active Active
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