CN220779729U - Online desalination equipment of flue gas washing - Google Patents
Online desalination equipment of flue gas washing Download PDFInfo
- Publication number
- CN220779729U CN220779729U CN202322091282.8U CN202322091282U CN220779729U CN 220779729 U CN220779729 U CN 220779729U CN 202322091282 U CN202322091282 U CN 202322091282U CN 220779729 U CN220779729 U CN 220779729U
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- CN
- China
- Prior art keywords
- alkaline washing
- spiral
- flue gas
- centrifuge
- washing tower
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- 238000005406 washing Methods 0.000 title claims abstract description 85
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000003546 flue gas Substances 0.000 title claims abstract description 29
- 238000010612 desalination reaction Methods 0.000 title claims description 17
- 239000002351 wastewater Substances 0.000 claims abstract description 45
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000011033 desalting Methods 0.000 claims abstract description 20
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000001502 supplementing effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005201 scrubbing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000003518 caustics Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 11
- 238000010992 reflux Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004094 preconcentration Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Physical Water Treatments (AREA)
Abstract
The utility model discloses an online desalting device for flue gas washing, and belongs to the field of environmental protection equipment. The online desalting device for flue gas washing comprises an alkaline washing tower, wherein an evaporator is arranged on the alkaline washing tower, alkaline washing wastewater in the alkaline washing tower is discharged from the bottom and flows into the evaporator for wastewater treatment, an online desalting mechanism is arranged on the alkaline washing tower, and the online desalting mechanism comprises a filter centrifuge and a circulating pipeline arranged between the filter centrifuge and the alkaline washing tower. According to the utility model, an independent treatment route is newly added on the basis of wastewater treatment on the alkaline washing tower through the evaporator, and the filtering centrifuge is adopted to carry out filtering reflux operation on the wastewater, so that the working load of the evaporator is effectively reduced, the salt concentration in the wastewater at the bottom of the alkaline washing tower is reduced, the problem of flue blockage caused by untimely alkaline washing wastewater treatment is avoided, and the device has the advantages of simple structure and convenience in construction and maintenance.
Description
Technical Field
The utility model belongs to the field of environment-friendly supporting equipment, and particularly relates to an online desalting device for flue gas washing.
Background
The field of flue gas treatment generally adopts the washing liquid to treat the flue gas, the pollutant in the gas is caught through the washing liquid, current equipment that washs the flue gas is alkaline washing tower, the pollutant in the flue gas is caught and salt is generated through alkali lye, can produce a large amount of salt-containing waste water in the flue gas treatment process, salt-containing waste water adopts the evaporimeter to handle, but the treatment effeciency of evaporimeter is slower, the energy that consumes is more, in comprehensive environmental protection treatment field, the evaporimeter still needs the waste water that the cooperation treatment other equipment produced, this leads to alkaline washing tower's waste water to handle easily not so that lead to the concentration of salt in the waste water too high, the flue is blockked up easily, waste water treatment facility is in the state of load operation for a long time. The utility model patent with publication number of CN108273367A discloses a flue gas purifying and desalting process method and system, wherein a desalting unit is additionally arranged in the scheme, and salt is filtered and separated from the desalting unit through a centrifugal machine. But the desalination units adopt a serial connection mode, and the centrifuge adopts common centrifugal equipment to carry out filtration and needs to cooperate with other desalination equipment to carry out cooperative treatment, so that the flow is complex.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model aims to provide an online desalting device for flue gas washing.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
an on-line flue gas scrubbing desalination apparatus comprising: the alkaline washing tower is provided with an evaporator, alkaline washing wastewater in the alkaline washing tower is discharged from the bottom and flows into the evaporator for wastewater treatment, and the alkaline washing tower is provided with an online desalting mechanism which comprises a filter centrifuge and a circulating pipeline arranged between the filter centrifuge and the alkaline washing tower.
As a preferable scheme of the utility model, the filter centrifuge is a double-cone-section turning spiral discharging centrifuge, an outer turning strand and an inner spiral in the double-cone-section turning spiral discharging centrifuge are designed in two sections, the material is pre-concentrated through the outer turning strand and the inner spiral of a first section, and the concentrated material is filtered through the outer turning strand and the inner spiral of a second section.
As a preferable scheme of the utility model, a cooling mechanism is also arranged at the position of the feed inlet of the filter centrifuge, and the alkaline washing wastewater is cooled by the cooling mechanism and then enters the double-cone-section rotary-strand spiral discharge centrifuge.
As a preferred embodiment of the present utility model, the cooling mechanism includes: the cooling box and set up the spiral heat exchange tube to the cooling box, the spiral heat exchange tube includes inner circle spiral pipe and outer lane spiral pipe, and the bottom intercommunication of inner circle spiral pipe and outer lane spiral pipe is connected to filtering centrifuge's feed inlet after the top of inner circle spiral pipe runs through the cooling box, and the top of outer lane spiral pipe is connected to the discharge gate of caustic scrubber after running through the cooling box.
As a preferable mode of the utility model, the upper side and the lower side of the cooling box are respectively provided with a water supplementing port and a water discharging port, and the cooling water enters from the water supplementing port at the bottom and is discharged from the water discharging port at the top.
As a preferable scheme of the utility model, a first alkaline washing wastewater discharge port and a second alkaline washing wastewater discharge port are arranged at the bottom of the alkaline washing tower, the first alkaline washing wastewater discharge port is positioned above the second alkaline washing wastewater discharge port, the first alkaline washing wastewater discharge port is connected to the top of the outer ring spiral pipe, and the second alkaline washing wastewater discharge port is connected to the evaporator.
As a preferable scheme of the utility model, a spiral staircase is arranged on the outer side of the alkaline washing tower, a water supplementing port is arranged at the top of the staircase, a centrifugal pump is arranged at the top of the staircase, a water collecting tank is arranged at the bottom of the filtering centrifugal machine, and two ends of the centrifugal pump are respectively connected with the water collecting tank and the water supplementing port.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model provides an online desalting device for flue gas washing, which is characterized in that an independent treatment route is newly added on the basis of wastewater treatment of an alkaline washing tower through an evaporator, and a filtering centrifuge is adopted to carry out filtering reflux operation on wastewater, so that the working load of the evaporator is effectively reduced, the salt concentration in the wastewater at the bottom of the alkaline washing tower is reduced, and the problem of flue blockage caused by untimely treatment of the alkaline washing wastewater is avoided.
2. The utility model adopts the filter centrifuge with the pre-concentration mechanism to carry out the filtration treatment, and does not need to install redundant concentration equipment on a desalting route, and the newly added desalting route has simple structural route and is convenient to construct.
3. The filtering centrifuge is provided with the cooling mechanism, and the cooling mechanism on the filtering centrifuge is used for cooling the wastewater, so that salt in the wastewater can be separated out conveniently.
Drawings
FIG. 1 is a schematic perspective view of an angle 1 of an on-line desalination device for flue gas scrubbing;
FIG. 2 is a schematic perspective view of an angle 2 of an on-line desalination device for flue gas scrubbing;
FIG. 3 is a schematic diagram of a cooling mechanism of an on-line desalination device for flue gas scrubbing;
FIG. 4 is an internal structural view of the filter centrifuge;
in the figure: 1-an alkaline washing tower; 101-a first alkaline washing wastewater discharge port; 102-a second alkaline washing wastewater discharge port; 103-water supplementing port; 104-an escalator; 2-an evaporator; 3-a filter centrifuge; 301-outer turning; 302-internal spiral; 4-a cooling box; 401-spiral heat exchange tubes; 5-a centrifugal pump; 6-a water collecting tank.
Detailed Description
The utility model is further described below in connection with specific embodiments.
Example 1
As shown in fig. 1 and 2, the present utility model provides an online desalination device for flue gas washing, comprising: the alkaline washing tower 1 is provided with an evaporator 2, alkaline washing wastewater in the alkaline washing tower 1 is discharged from the bottom and flows into the evaporator 2 for wastewater treatment, the alkaline washing tower 1 is provided with an online desalting mechanism, and the online desalting mechanism comprises a filter centrifuge 3 and a circulating pipeline arranged between the filter centrifuge 3 and the alkaline washing tower 1. The utility model provides an online desalting device for flue gas washing, which is characterized in that an independent treatment route is newly added on the basis of wastewater treatment of an alkaline washing tower through an evaporator, and a filtering centrifuge is adopted to carry out filtering reflux operation on wastewater, so that the working load of the evaporator is effectively reduced, the salt concentration in the wastewater at the bottom of the alkaline washing tower is reduced, and the problem of flue blockage caused by untimely treatment of the alkaline washing wastewater is avoided.
As shown in fig. 2, the filtering centrifuge of the present utility model is specifically a double-cone-section turning spiral discharge centrifuge, wherein an outer turning strand 301 and an inner spiral 302 in the double-cone-section turning spiral discharge centrifuge are designed in two sections, material pre-concentration treatment is achieved through the outer turning strand 301 and the inner spiral 302 of the first section, and filtering operation is achieved through the outer turning strand 301 and the inner spiral 302 of the second section.
Example 2
Compared with the embodiment 1, the utility model provides an online desalting device for flue gas washing, wherein a cooling mechanism is further arranged at the position of a feed inlet of a filtering centrifuge, alkaline washing wastewater is cooled by the cooling mechanism and then enters into a double-cone-section turning spiral discharging centrifuge, and the cooling mechanism comprises: the cooling box 4 and set up the spiral heat exchange tube 401 in the cooling box 4, spiral heat exchange tube 401 includes inner circle spiral pipe and outer lane spiral pipe, the bottom intercommunication of inner circle spiral pipe and outer lane spiral pipe, the top of inner circle spiral pipe runs through behind the cooling box and is connected to the feed inlet of filtering centrifuge 3, the top of outer lane spiral pipe runs through behind the cooling box and is connected to the discharge gate of alkaline washing tower, moisturizing mouth and outlet are installed respectively to the upper and lower both sides of cooling box 4, the cooling water gets into and is discharged from the outlet at top from the moisturizing mouth at bottom (as shown in fig. 3). The rest of the structure is the same as in example 1.
Because the flue gas treated by the alkaline washing tower is usually high-temperature waste gas, the temperature of the alkaline washing liquid is increased after the alkaline washing liquid contacts with the high-temperature waste gas, and more salt is dissolved, more salt can be salted out by arranging a cooling mechanism, and further, a better desalting effect is realized.
Example 3
Compared with the embodiment 2, the utility model provides an online desalting device for flue gas washing, wherein a first alkaline washing wastewater discharge port 101 and a second alkaline washing wastewater discharge port 102 are arranged at the bottom of an alkaline washing tower 1, the first alkaline washing wastewater discharge port 101 is positioned above the second alkaline washing wastewater discharge port 102, the first alkaline washing wastewater discharge port 101 is connected to the top of an outer ring spiral pipe, the second alkaline washing wastewater discharge port 102 is connected to an evaporator 2, a spiral escalator 104 is arranged at the outer side of the alkaline washing tower, a water supplementing port 103 is arranged at the top of the escalator 104, a centrifugal pump 5 is arranged at the top of the escalator 104, a water collecting tank 6 is arranged at the bottom of a filtering centrifugal machine 3, and two ends of the centrifugal pump 5 are respectively connected with the water collecting tank 6 and the water supplementing port 103. The rest of the structure is the same as in example 2.
Through setting up two upper and lower positions alkaline wash waste water discharge gates, carry in filtering centrifuge 3 to the high concentration alkaline wash waste water of bottom is limited to handle for the waste water warp volume that flows into in the filtering centrifuge 3 satisfies the use concentration requirement of centrifuge, full play centrifuge's effect. The recycling of filtered water of the filtering centrifuge 3 is realized through the water collecting tank 6 and the centrifugal pump 5, and the idling of the centrifugal pump 5 can be avoided by arranging a liquid level sensor in the water collecting tank 6 to be matched with the centrifugal pump 5.
Claims (7)
1. An on-line flue gas scrubbing desalination apparatus comprising: the alkaline washing tower (1), be equipped with evaporimeter (2) on alkaline washing tower (1), the alkaline washing waste water in alkaline washing tower (1) is discharged from the bottom and is flowed into in evaporimeter (2) and carry out waste water treatment, characterized in that, be equipped with on-line desalination mechanism on alkaline washing tower (1), on-line desalination mechanism include filter centrifuge (3) and set up the circulation pipeline between filter centrifuge (3) and alkaline washing tower (1).
2. The online desalination device for flue gas washing according to claim 1, wherein the filter centrifuge is specifically a double-cone-section turning spiral discharge centrifuge, an outer turning strand (301) and an inner spiral (302) in the double-cone-section turning spiral discharge centrifuge are designed in two sections, material is pre-concentrated through the outer turning strand (301) and the inner spiral (302) of the first section, and the concentrated material is filtered through the outer turning strand (301) and the inner spiral (302) of the second section.
3. The online desalting device for flue gas washing according to claim 1, wherein a cooling mechanism is further arranged at the position of the feed inlet of the filtering centrifuge, and the alkaline washing wastewater is cooled by the cooling mechanism and then enters the double-cone-section rotary-strand spiral discharging centrifuge.
4. A flue gas scrubbing, on-line desalination apparatus according to claim 3, wherein said cooling means comprises: the cooling box (4) and set up spiral heat exchange tube (401) in cooling box (4), spiral heat exchange tube (401) are including inner circle spiral pipe and outer lane spiral pipe, and the bottom intercommunication of inner circle spiral pipe and outer lane spiral pipe, the top of inner circle spiral pipe run through behind the cooling box and are connected to the feed inlet of filtering centrifuge (3), and the top of outer lane spiral pipe runs through behind the cooling box and is connected to the discharge gate of caustic scrubber.
5. An on-line desalination apparatus for flue gas washing according to claim 4, wherein the cooling tank (4) is provided with water supply ports and water discharge ports on both sides thereof, respectively, and cooling water is introduced from the water supply ports at the bottom and discharged from the water discharge ports at the top.
6. The online desalination device for flue gas washing according to claim 5, wherein a first alkaline washing wastewater discharge port (101) and a second alkaline washing wastewater discharge port (102) are arranged at the bottom of the alkaline washing tower (1), the first alkaline washing wastewater discharge port (101) is located above the second alkaline washing wastewater discharge port (102), the first alkaline washing wastewater discharge port (101) is connected to the top of the outer ring spiral pipe, and the second alkaline washing wastewater discharge port (102) is connected to the evaporator (2).
7. The online desalination device for flue gas washing according to claim 1, wherein a spiral staircase (104) is arranged on the outer side of the alkaline washing tower, a water supplementing port (103) is arranged at the top of the staircase (104), a centrifugal pump (5) is arranged at the top of the staircase (104), a water collecting tank (6) is arranged at the bottom of the filtering centrifugal machine (3), and two ends of the centrifugal pump (5) are respectively connected with the water collecting tank (6) and the water supplementing port (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322091282.8U CN220779729U (en) | 2023-08-04 | 2023-08-04 | Online desalination equipment of flue gas washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322091282.8U CN220779729U (en) | 2023-08-04 | 2023-08-04 | Online desalination equipment of flue gas washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220779729U true CN220779729U (en) | 2024-04-16 |
Family
ID=90632192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322091282.8U Active CN220779729U (en) | 2023-08-04 | 2023-08-04 | Online desalination equipment of flue gas washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220779729U (en) |
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2023
- 2023-08-04 CN CN202322091282.8U patent/CN220779729U/en active Active
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