CN218047280U

CN218047280U - Pretreatment device for reducing ammonia escape in ammonia desulphurization

Info

Publication number: CN218047280U
Application number: CN202221693184.0U
Authority: CN
Inventors: 姜成武; 胡学志
Original assignee: Shandong Greenism Environmental Protection Technology Co ltd
Current assignee: Shandong Greenism Environmental Protection Technology Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-12-16
Anticipated expiration: 2032-07-04

Abstract

The utility model relates to an ammonia process desulfurization technical field just discloses a preprocessing device that ammonia process desulfurization reduced ammonia escape, including adsorption tank, ammonia process desulfurizing tower, one side of adsorption tank communicates respectively and is provided with a pipe, no. two pipes, no. three pipes, no. four pipes, the other end of a pipe, no. two pipes, no. three pipes, no. four pipes is all fixed to be run through one side of ammonia process desulfurizing tower and court the inside of ammonia process desulfurizing tower is extended. Through realizing the pH value district of same absorption tank, the absorption liquid of high pH value spouts like the third layer both can increase the removal effect of aerosol, can improve SO 2's removal efficiency again.

Description

Pretreatment device for reducing ammonia escape in ammonia desulphurization

Technical Field

The utility model relates to an ammonia process desulfurization technical field specifically is an ammonia process desulfurization reduces preprocessing device that ammonia escaped.

Background

Conventional ammonia process desulfurization technology can produce a large amount of ammonia and escape, produces the ammonium bisulfite with the sulfur dioxide in the flue gas, can form the aerosol, causes the flue gas to be trailing, forms serious environmental protection problem, and adopts the mode that sets up filler washing layer usually in the engineering, carries out filler washing to reach the purpose of getting rid of the aerosol, gets rid of the effect unsatisfactory. The utility model discloses this problem can be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ammonia process desulfurization reduces preprocessing device that ammonia escaped, solves the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a preprocessing device that ammonia process desulfurization reduced ammonia escape, includes adsorption tank, ammonia process desulfurizing tower, one side of adsorption tank communicates respectively and is provided with a pipe, no. two pipes, no. three pipe, no. four pipes, the other end of a pipe, no. two pipes, no. three pipe, no. four pipes is all fixed to be run through one side of ammonia process desulfurizing tower and court the inside of ammonia process desulfurizing tower is extended, the inside of ammonia process desulfurizing tower is provided with one grade and rises the gas cap, no. four pipes with one grade rises the gas cap and is connected, the opposite side intercommunication of adsorption tank is provided with No. five pipes, the other end of No. five pipes is fixed to be run through one side of ammonia process desulfurizing tower and towards the inside of ammonia process desulfurizing tower is extended, all be provided with the shower layer on a pipe, no. two pipes, no. three pipe, no. five pipes, one side of adsorption tank is provided with three liquid outlet respectively, be provided with the absorption pump on a pipe, no. two pipes, no. three pipe respectively with between the liquid outlet through three adsorption tank, still be provided with the inside of ammonia process desulfurizing tower and rise the gas cap.

Preferably, the other side of the absorption tank is communicated with a sixth pipe, the other end of the sixth pipe is connected with a ph detector, and a liquid outlet pump is arranged on the sixth pipe.

Preferably, the absorption tank is provided with an ammonia adding port, the ammonia adding port is DN80, and the absorption tank is connected with an inlet pipeline of the pump through an elbow.

Preferably, the liquid ammonia port is positioned 200mm below the top of the partition.

Preferably, the size of the partition plate is 2m in height, the radius is 1.25m, and the opening position and the opening size phi are 100mm.

Preferably, the receiving tank is internally provided with a bulkhead for replenishing liquid ammonia, the bulkhead is made of a steel plate with the diameter of delta =6mm and has the height of 2m, if the diameter of the absorption tank is D, the radius of the bulkhead is R =0.3D, and the plate is respectively provided with nine round holes with the diameter of phi 100mm, so that the pH value in the absorption tank 1 is partitioned, escaped ammonium sulfite aerosol can be better removed, the workload of a downstream filler washing section is reduced, and the aerosol removal effect is more ideal.

Preferably, the bulkhead surface is provided with the anticorrosive coating, the anticorrosive coating is 3mm, and the material that the anticorrosive coating adopted is the glass scale, prevents that ammonium sulfite solution from corroding it.

The utility model provides a pretreatment device for reducing ammonia escape in ammonia desulphurization. The method has the following beneficial effects:

(1) The utility model discloses a realize that the pH value of same tourie distinguishes, the absorption liquid of high pH value spouts the effect of getting rid of that can both increase aerosol like the third layer, can improve SO 2's the efficiency of getting rid of again.

(2) The utility model discloses a start out the liquid pump, take the outside absorption liquid in lobe out to the pH detector and detect, control pH value about, the layer is sprayed by the third layer by pumping into to the absorption liquid through high pH value in the back, absorbs the hydrogen sulfite ammonia sol of escape, and the concentration of reduction aerosol that can be great, back end in addition carry out the secondary to the aerosol of escape behind the filler washing layer and get rid of, have improved the effect of getting rid of aerosol.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the absorption tank of the present invention;

fig. 3 is a top cross-sectional view of the absorption tank of the present invention.

In the figure: 1. an absorption tank; 2. an ammonia desulfurization tower; 3. a primary air-lifting cap; 4. a secondary air-lifting cap; 5. an ammonia adding port; 6. a liquid outlet; 7. a ph detector; 8. a first pipe; 9. a second pipe; 10. a third pipe; 11. A fourth tube; 12. a fifth pipe; 13. a liquid outlet pump; 14. a sixth pipe; 15. an absorption pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1-3, the utility model provides a technical solution: a pretreatment device for reducing ammonia escape by ammonia desulphurization comprises an absorption tank 1 and an ammonia desulphurization tower 2, wherein one side of the absorption tank 1 is respectively communicated with a first pipe 8, a second pipe 9, a third pipe 10 and a fourth pipe 11, the other ends of the first pipe 8, the second pipe 9, the third pipe 10 and the fourth pipe 11 fixedly penetrate through one side of the ammonia desulphurization tower 2 and extend towards the inside of the ammonia desulphurization tower 2, a first-stage gas-lift cap 3 is arranged inside the ammonia desulphurization tower 2, the fourth pipe 11 is connected with a first-stage gas-lift cap 3, the other side of the absorption tank 1 is communicated with a fifth pipe 12, the other end of the fifth pipe 12 fixedly penetrates through one side of the ammonia desulphurization tower 2 and extends towards the inside of the ammonia desulphurization tower 2, shower layers are respectively arranged on the first pipe 8, the second pipe 9, the third pipe 10 and the fifth pipe 12, one side of the absorption tank 1 is respectively provided with three liquid outlets 6, the first pipe 8, the second pipe 9 and the third pipe 10 are respectively provided with an absorption pump 15, the first pipe 8, the second pipe 9 and the third pipe 10 are respectively communicated with three liquid outlets 6 through three absorption pumps 15, the ammonia desulfurization tower 2 is also internally provided with a secondary air-lifting cap 4, the absorption tank 1 is provided with an ammonia adding port 5, the ammonia adding port 5 is DN80 and is connected with an inlet pipeline of the pump through an elbow, the ammonia adding port 5 is positioned 200mm below the top of a clapboard, the size of the clapboard is 2m, the radius is 1.25m, the opening position and the opening size are 100mm, the bottom of the clapboard are sealed by a steel plate, the absorption tank 1 is provided with a compartment for adding liquid ammonia, the compartment is made of a steel plate with the diameter of delta =6mm, the height is 2m, if the diameter of the absorption tank is D, the radius of the compartment is R =0.3D, the plate is respectively provided with nine round holes with the diameter of phi 100mm, so that the pH value in the absorption tank 1 is partitioned, and the escaped ammonium sulfite aerosol can be better removed, the workload of the downstream filler washing section is reduced, SO that the aerosol removal effect is more ideal, the outer surface of the bulkhead is provided with an anticorrosive coating, the anticorrosive coating is 3mm, the material adopted by the anticorrosive coating is glass flakes, the ammonium sulfite solution is prevented from corroding the anticorrosive coating, the pH value of the same absorption tank is divided, and the absorption liquid with a high pH value is sprayed to the third layer, SO that the removal effect of the aerosol can be increased, and the removal efficiency of SO2 can be improved.

In this embodiment, spray the flue gas cooling through setting up in the concentrated section, can make the flue gas temperature drop to below 70 ℃, reduce the volatilization of ammonia, can utilize waste heat to produce the ammonium sulfate solution of high concentration again, obtain the finished product ammonium sulfate product after centrifugation, drying. After the temperature of the flue gas is reduced, the flue gas enters an absorption section through a first-stage gas lifting cap 3, three layers of spraying are arranged to absorb the flue gas, absorption liquid enters an absorption tank 1, the absorption tank 1 is provided with 3 absorption pumps 15, the 3 absorption pumps 15 work simultaneously to spray and wash the flue gas, and escaped aerosol enters a filler washing section to be removed.

Example two:

as shown in fig. 1-3, on the basis of the first embodiment, the utility model provides a technical solution: preferably, the other side of the absorption tank 1 is communicated with a sixth pipe 14, the other end of the sixth pipe 14 is connected with a pH detector 7, a liquid outlet pump 13 is arranged on the sixth pipe 14, the absorption liquid outside the compartment is pumped out to the pH detector 7 for detection by starting the liquid outlet pump 13, the pH value is controlled to be about 6, the absorption liquid with a high pH value is then pumped into a third spraying layer by a pump, the escaped ammonia bisulfite aerosol is absorbed, the concentration of the aerosol can be greatly reduced, the escaped aerosol is secondarily removed after the filler water washing layer is added at the rear section, and the removal effect of the aerosol is improved.

In this embodiment, through starting liquid outlet pump 13, take out the absorption liquid outside the bulkhead to pH detector 7 and detect, if the pH value control is about 6, later send into the third layer by the pump through the absorption liquid of high pH value and spray the layer, absorb the ammonia hydrogen sulfite aerosol that escapes, the concentration of reduction aerosol that can be great, the back end is got rid of the aerosol that escapes for the second time behind the filler washing layer in addition, has improved the removal effect of aerosol.

When the ammonia sulfate solution is used, the concentration section is provided with a spray for cooling the flue gas, so that the temperature of the flue gas can be reduced to below 70 ℃, the volatilization of ammonia gas is reduced, the waste heat can be utilized to generate a high-concentration ammonium sulfate solution, and a finished ammonium sulfate product is obtained after centrifugation and drying. After the flue gas is cooled, the flue gas enters an absorption section through a first-stage lifting cap 3, three layers of spraying are arranged to absorb the flue gas, absorption liquid enters an absorption tank 1, the absorption tank 1 is provided with 3 absorption pumps 15, the 3 absorption pumps 15 work simultaneously to spray and wash the flue gas, escaped aerosol enters a filler water washing section to be removed, a liquid outlet pump 13 is started, the absorption liquid outside a bay is pumped out to a pH detector 7 to be detected, and the pH value is controlled to be about 6.

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 reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a preprocessing device that ammonia process of desulfurization reduces ammonia escape, includes absorption tank (1), ammonia process desulfurizing tower (2), its characterized in that: one side of the absorption tank (1) is respectively communicated with a first pipe (8), a second pipe (9), a third pipe (10) and a fourth pipe (11), the other ends of the first pipe (8), the second pipe (9), the third pipe (10) and the fourth pipe (11) fixedly penetrate through one side of the ammonia desulfurization tower (2) and extend towards the inside of the ammonia desulfurization tower (2), a first-stage air-lifting cap (3) is arranged inside the ammonia desulfurization tower (2), the fourth pipe (11) is connected with the first-stage air-lifting cap (3), the other side of the absorption tank (1) is communicated with a fifth pipe (12), the other end of the fifth pipe (12) fixedly penetrates through one side of the ammonia desulfurization tower (2) and extends towards the inside of the ammonia desulfurization tower (2), the first pipe (8), the second pipe (9), the third pipe (10) and the fifth pipe (12) are respectively provided with a first pump (6) and a third pump (15), the first pipe (9) and the third pump (10) are respectively communicated with the third pipe (9) and the third pump (10), and a secondary air-lifting cap (4) is also arranged in the ammonia desulfurization tower (2).

2. The pretreatment device for reducing ammonia slip in ammonia desulfurization according to claim 1, wherein: the other side intercommunication of adsorption tank (1) is provided with No. six pipe (14), the other end of No. six pipe (14) is connected with ph detector (7), be provided with out liquid pump (13) on No. six pipe (14).

3. The pretreatment device for reducing ammonia slip in ammonia desulfurization according to claim 1, wherein: an ammonia adding port (5) is arranged on the absorption tank (1), and the ammonia adding port is DN80.

4. The pretreatment device for reducing ammonia slip in ammonia desulfurization according to claim 1, wherein: the position of the liquid ammonia feed inlet is 200mm below the top of the clapboard.

5. The pretreatment device for reducing ammonia slip in ammonia desulfurization according to claim 1, wherein: the size of the partition board is 2m in height, the radius is 1.25m, and the opening position and the opening size phi are 100mm.

6. The pretreatment device for reducing ammonia slip in ammonia desulfurization according to claim 1, wherein: and a bulkhead for supplementing liquid ammonia is arranged in the collection tank.

7. The pretreatment device for reducing ammonia slip by ammonia desulphurization according to claim 1, characterized in that: the outer surface of the bulkhead is provided with an anticorrosive coating which is 3mm.