CN217409770U - Horizontal flash tank for flash evaporation of desulfurization slurry - Google Patents

Abstract

The utility model discloses a horizontal flash tank for flash evaporation of desulfurization slurry, which comprises a tank body, a slurry distribution pipe bundle and a slurry nozzle; cloth thick liquid tube bank one end level stretches into jar in the body, and cloth thick liquid tube bank stretches into the part in the jar body, and radial level extends a plurality of extension pipes, and a plurality of extension pipes are arranged along cloth thick liquid tube bank axial, are provided with a plurality of thick liquid nozzles on the extension pipe, and the mouth of every thick liquid nozzle sets up towards jar body bottom. The spraying coverage area is improved, the temperature uniformity in the flash tank is improved, and the flash effect is improved.

Description

Horizontal flash tank for flash evaporation of desulfurization slurry

Technical Field

The utility model belongs to the flash tank field relates to a horizontal flash tank for desulfurization thick liquid flash distillation.

Background

The desulfurization slurry flash evaporation heat extraction technology is a novel flue gas waste heat recovery technology. The technology utilizes the characteristic that the boiling point of the slurry in the wet flue gas desulfurization process is reduced along with the reduction of the environmental pressure to establish a vacuum phase change environment, so that the desulfurization slurry above the current negative pressure saturation temperature is subjected to flash evaporation, negative pressure steam is generated and is conveyed to an absorption heat pump to carry out condensation and heat release on a low-temperature medium, and clean, efficient and low-cost recovery of the waste heat of the desulfurization slurry is realized. The technology can achieve multiple purposes of saving energy and water, improving the desulfurization efficiency and eliminating visual pollution of smoke plume, and can simultaneously take energy conservation and emission reduction into consideration.

But when carrying out the desulfurization thick liquid in the flash tank at present and spraying, it is too little to spray the coverage area, and in for the flash tank, it is inhomogeneous to spray, and the interior temperature of flash tank is inhomogeneous, very big influence flash effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a horizontal flash tank for desulfurization thick liquid flash distillation, improve and spray the coverage area, improve the interior temperature homogeneity of flash tank, improve the flash distillation effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a horizontal flash tank for flash evaporation of desulfurization slurry comprises a tank body, a slurry distribution pipe bundle and a slurry nozzle;

cloth thick liquid tube bank one end level stretches into jar in the body, and cloth thick liquid tube bank stretches into the part in the jar body, and radial level extends a plurality of extension pipes, and a plurality of extension pipes are arranged along cloth thick liquid tube bank axial, are provided with a plurality of thick liquid nozzles on the extension pipe, and the mouth of every thick liquid nozzle sets up towards jar body bottom.

Preferably, the area of the arrangement area of the part of the pulp distribution pipe bundle extending into the tank body and the extension pipe is more than 90% of the horizontal cross-sectional area of the tank body.

Preferably, the shape of the arrangement area of the part of the slurry distribution pipe bundle extending into the tank body and the extension pipe is the same as the horizontal section shape of the tank body.

Preferably, each extension pipe is provided with a regulating valve.

Furthermore, the regulating valve adopts a high-temperature electromagnetic valve.

Preferably, the pulp distribution pipe bundle is positioned at the part outside the tank body and is provided with a pulp pump.

Preferably, the demister is arranged above the slurry distribution tube bundle in the tank body, the cold slurry outlet is arranged below the slurry distribution tube bundle, and the cold slurry pump is arranged at the cold slurry outlet.

Preferably, the slurry nozzle has a spray fan angle of 60 to 120 °.

Preferably, the tank body is of a round or square horizontal structure.

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

the utility model discloses a stretch into the part in the jar body at cloth thick liquid pencil, radial level extends a plurality of extension pipes, and a plurality of extension pipes are arranged along cloth thick liquid pencil axial, have greatly increased the coverage area that sprays of cloth thick liquid pencil, improve the interior temperature homogeneity of flash tank to very big improvement the flash distillation effect.

Further, the area of the arrangement area is larger than 90% of the horizontal section area of the tank body, so that the tank body is covered to the maximum extent, and the flash evaporation effect is improved.

Further, all be provided with the governing valve on every extension pipe, can adjust the liquid pressure of slurry nozzle department on every extension pipe, guarantee that the volume of spraying of every slurry nozzle is unanimous as far as possible, guarantee the flash distillation effect.

Drawings

FIG. 1 is a schematic structural view of a horizontal flash tank of the present invention;

fig. 2 is a schematic layout of the pulp distribution tube bundle of the present invention.

Wherein: 1-tank body; 2-a demister; 3-distributing a slurry pipe bundle; 4-slurry nozzle; 5-a slurry pump; 6-a cold slurry pump; 7-extension tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in figure 1, be a horizontal flash tank for desulfurization thick liquid flash distillation, including jar body 1, defroster 2, cloth thick liquid pencil 3, thick liquid nozzle 4, thick liquid pump 5 and cold thick liquid pump 6.

The tank body 1 is of a round or square horizontal structure, and the cavity is in a negative pressure environment; the inlet of the slurry distribution pipe bundle 3 is connected with the desulfurization slurry outlet of the desulfurization tower, and the other end of the slurry distribution pipe bundle extends into the flash tower; a plurality of slurry nozzles 4 are distributed on the slurry distribution pipe bundle 3; a cold slurry outlet is formed in the bottom of the tank body 1, and a cold slurry pump 6 is arranged at the cold slurry outlet; the top of the tank body 1 is provided with a flash steam outlet.

As shown in fig. 2, the slurry distribution pipe bundle 3 horizontally extends into the tank body 1, a plurality of extension pipes 7 radially and horizontally extend from a portion of the slurry distribution pipe bundle 3 extending into the tank body 1, the plurality of extension pipes 7 are axially arranged along the slurry distribution pipe bundle 3, a plurality of slurry nozzles 4 are arranged on the extension pipes 7, a mouth of each slurry nozzle 4 is arranged toward the bottom of the tank body 1, and the number of the extension pipes 7 and the number of the slurry nozzles 4 are determined according to the size of the flash tank and actual use requirements.

The shape of the arrangement area of the part of the slurry distribution pipe bundle 3 extending into the tank body 1 and the extension pipe 7 is the same as the shape of the horizontal section of the tank body 1. Specifically, the free end of the extension pipe 7 is connected with the two ends of the part of the slurry distribution pipe bundle 3 extending into the tank body 1, the shape of the free end is approximately the same as the horizontal section of the tank body 1, and the free end is approximately circular or square, as shown in fig. 2, the horizontal section of the tank body 1 in the embodiment is square, the part of the slurry distribution pipe bundle 3 extending into the tank body 1 is also square as the arrangement area of the extension pipe 7, if the free end is circular, the length of the extension pipe 7 at the two ends of the part of the slurry distribution pipe bundle 3 extending into the tank body 1 is shortest, the length of the extension pipe 7 in the part of the slurry distribution pipe bundle 3 extending into the tank body 1 is longest, and the lengths of the other extension pipes 7 are gradually increased or decreased in sequence; if square, all the extension pipes 7 in the portion of the tube bundle 3 extending into the tank 1 have the same length.

And the area of the arrangement area of the part of the slurry distribution pipe bundle 3 extending into the tank body 1 and the extension pipe 7 is more than 90 percent of the area of the horizontal section of the tank body 1, and the whole horizontal section of the tank body 1 is covered as much as possible.

Every extension 7 is last all to be provided with the governing valve, if the cost allows, can all be provided with the governing valve in every thick liquid nozzle 4 import department, can adjust the liquid pressure of thick liquid nozzle 4 department on every extension 7, guarantees that every thick liquid nozzle 4's the volume of spraying is unanimous as far as possible, guarantees the flash distillation effect.

The governing valve adopts high temperature solenoid valve, can bear the high temperature in the flash tank.

The spraying fan-shaped angle of the slurry nozzles 4 is 60-120 degrees, and the spraying fan-shaped angle of the slurry nozzles 4 in the embodiment is preferably 120 degrees, so that the distance between the adjacent slurry nozzles 4 can be enlarged, the arrangement quantity is saved, and the cost is saved.

Desulfurization thick liquid that comes from the desulfurizing tower gets into cloth thick liquid tube bank 3, steps up the back through thick liquid pump 5, sprays through thick liquid nozzle 4 and breaks into the dribble, because jar body 1 is the negative pressure environment, the flash distillation takes place for the thick liquid drop, and the vapor of flash distillation play retrieves after the defogging of defroster 2. The cooled cold slurry is gathered at the bottom of the flash tower, and then is pressurized by the cold slurry pump 6 and then returns to the desulfurizing tower.

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.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter was not considered part of the disclosed subject matter.

Claims (9)

1. A horizontal flash tank for flash evaporation of desulfurization slurry is characterized by comprising a tank body (1), a slurry distribution pipe bundle (3) and a slurry nozzle (4);

cloth thick liquid tube bank (3) one end level stretches into jar body (1) in, cloth thick liquid tube bank (3) stretch into the part in jar body (1), radial level extends a plurality of extension pipes (7), and a plurality of extension pipes (7) are arranged along cloth thick liquid tube bank (3) axial, are provided with a plurality of thick liquid nozzle (4) on extension pipe (7), and the mouth of every thick liquid nozzle (4) sets up towards jar body (1) bottom.

2. A horizontal flash tank for the flash evaporation of desulfurization slurry according to claim 1, wherein the area of the arrangement area of the portion of the tube bundle (3) extending into the tank body (1) and the extension pipe (7) is greater than 90% of the horizontal cross-sectional area of the tank body (1).

3. A horizontal flash tank for desulfurization slurry flash evaporation according to claim 1, wherein the portion of the slurry distribution pipe bundle (3) extending into the tank body (1) and the arrangement area shape of the extension pipe (7) are the same as the horizontal cross-sectional shape of the tank body (1).

4. Horizontal flash tank for the flashing of desulphurized slurries according to claim 1, characterized in that each extension pipe (7) is provided with a regulating valve.

5. The horizontal flash tank for desulfurization slurry flash of claim 4, wherein the regulating valve is a high temperature solenoid valve.

6. Horizontal flash tank for the flash evaporation of desulfurization slurry according to claim 1, characterized in that the slurry distribution tube bundle (3) is provided with a slurry pump (5) at the portion outside the tank body (1).

7. The horizontal flash tank for desulfurization slurry flash evaporation according to claim 1, wherein a demister (2) is arranged above the slurry distribution tube bundle (3) in the tank body (1), a cold slurry outlet is arranged below the slurry distribution tube bundle (3), and a cold slurry pump (6) is arranged at the cold slurry outlet.

8. Horizontal flash tank for the flash evaporation of desulphurized slurries according to claim 1, characterized in that the spray sector angle of the slurry nozzles (4) is comprised between 60 and 120 °.

9. The horizontal flash tank for desulfurization slurry flash of claim 1, wherein the tank body (1) has a circular or square horizontal structure.

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