CN220959708U - Flue gas cooling system - Google Patents
Flue gas cooling system Download PDFInfo
- Publication number
- CN220959708U CN220959708U CN202322651159.7U CN202322651159U CN220959708U CN 220959708 U CN220959708 U CN 220959708U CN 202322651159 U CN202322651159 U CN 202322651159U CN 220959708 U CN220959708 U CN 220959708U
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- Prior art keywords
- heat exchange
- pipeline
- pipe
- inlet pipe
- water inlet
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000003546 flue gas Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 185
- 239000000498 cooling water Substances 0.000 claims abstract description 75
- 238000012856 packing Methods 0.000 claims abstract description 22
- 239000010865 sewage Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 20
- 230000001502 supplementing effect Effects 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 238000005406 washing Methods 0.000 description 6
- 230000002378 acidificating effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a flue gas cooling system which comprises a packing tower, a heat exchanger, a first pipeline group and a second pipeline group, wherein a heat exchange water inlet pipe and a heat exchange water outlet pipe are arranged in the packing tower, the heat exchange water inlet pipe and the heat exchange water outlet pipe are connected with a hot water heat exchange side of the heat exchanger, a cold water heat exchange side of the heat exchanger is connected with a cooling water inlet pipe and a cooling water outlet pipe, meanwhile, the heat exchange water inlet pipe and the cooling water outlet pipe are provided with the first pipeline group, and the heat exchange water outlet pipe and the cooling water inlet pipe are provided with the second pipeline group.
Description
Technical Field
The utility model relates to the technical field of heat exchangers, in particular to a flue gas cooling system.
Background
In the copper smelting flue gas acid making process, the flue gas purification procedure has the main functions of wet washing and dedusting, cooling and demisting the flue gas. And in the process of circulating the washing liquid to wash the flue gas at about 300 ℃, the temperature of the washing liquid is rapidly increased, and the washing liquid is acidic after absorbing sulfur trioxide. In order to meet the requirements of equipment and processes, the high-temperature acid circulating liquid needs to be cooled, so that the equipment is prevented from being damaged under the high-temperature acid circulating liquid. The plate heat exchanger generally adopts a countercurrent mode, one side is fed with acid washing liquid (heat medium), the other side is fed with water (cold medium), the cooled circulating liquid is fed into a tower again to wash flue gas, and the heated water is returned to a circulating water cooling tower again for cooling by a fan.
Because the circulating cooling water contains elements such as calcium, magnesium and the like, the working environment temperature of the plate heat exchanger is high, medium circulation channels between the plates are narrow, and along with the extension of the service time, the water channels are easy to scale, block the channels and reduce the heat exchange efficiency.
In view of this, the prior art is still to be improved and developed.
Disclosure of utility model
In view of the shortcomings of the prior art, the utility model aims to provide a flue gas cooling system, which aims to solve the problems that scale is generated in a water pipeline of a heat exchanger and heat exchange efficiency is affected when circulating liquid is cooled in the existing copper smelting flue gas acid making process.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a flue gas cooling system, includes packed tower and heat exchanger, the heat exchanger includes hot water heat exchange side and cold water heat exchange side, its characterized in that still includes:
The heat exchange water inlet pipe and the heat exchange water outlet pipe are arranged in the packing tower at one end, and the other end is connected with the hot water heat exchange side; the cold water heat exchange side is connected with a cooling water inlet pipe and a cooling water outlet pipe;
The hot water cooling device comprises a heat exchange water inlet pipe, a cooling water inlet pipe, a heat exchange water outlet pipe, a first pipeline group and a second pipeline group, wherein the first pipeline group is arranged on the heat exchange water inlet pipe and the cooling water outlet pipe, and the second pipeline group is arranged on the heat exchange water outlet pipe and the cooling water inlet pipe, and hot water on the hot water heat exchange side and cold water circulation positions on the cold water heat exchange side are exchanged through the first pipeline group and the second pipeline group.
Further, the first pipe group includes:
One end of the first pipeline is connected with the heat exchange water inlet pipe, the other end of the first pipeline is connected with the cooling water outlet pipe, and a first switch valve is arranged in the first pipeline;
One end of the second pipeline is connected with the cooling water outlet pipe, the other end of the second pipeline is connected with the heat exchange water inlet pipe, and a second switch valve is arranged in the second pipeline;
The third switch valve is arranged between the connection point of the first pipeline and the heat exchange water inlet pipe and the connection point of the second pipeline and the heat exchange water inlet pipe;
The fourth switch valve is arranged between the connection point of the first pipeline and the cooling water outlet pipe and the connection point of the second pipeline and the cooling water outlet pipe.
Further, the second pipe group includes:
one end of the third pipeline is connected with the heat exchange water outlet pipe, the other end of the third pipeline is connected with the cooling water inlet pipe, and a fifth switch valve is arranged in the third pipeline;
One end of the third pipeline is connected with the cooling water inlet pipe, the other end of the third pipeline is connected with the heat exchange water outlet pipe, and a sixth switching valve is arranged in the fourth pipeline;
The seventh switch valve is arranged between the connection point of the third pipeline and the heat exchange water outlet pipe and the connection point of the fourth pipeline and the heat exchange water outlet pipe;
And the eighth switch valve is arranged between the connection point of the third pipeline and the cooling water inlet pipe and the connection point of the fourth pipeline and the cooling water inlet pipe.
Further, the cooling water inlet pipe and the cooling water outlet pipe are respectively connected with an inlet and an outlet of an external cooling tower, a first sewage draining pipeline is arranged on one side, close to the cooling tower, of the cooling water inlet pipe, and a first sewage draining switch valve is arranged in the first sewage draining pipeline.
Further, a second sewage draining pipeline is arranged on one side, close to the packed tower, of the heat exchange water inlet pipe, and a second sewage draining switch valve is arranged in the second sewage draining pipeline.
Furthermore, a circulating pump is arranged on one side of the heat exchange water inlet pipe, which is close to the packed tower, and is used for extracting liquid in the packed tower.
Further, a third sewage draining pipeline is arranged on one side, far away from the packed tower, of the circulating pump, and a third sewage draining switch valve is arranged inside the third sewage draining pipeline.
Further, a water supplementing pipe is arranged on one side of the packing tower, one end of the water supplementing pipe is communicated with the inside of the packing tower, and the other end of the water supplementing pipe is communicated with an external water supply pump.
Further, a smoke exhaust hole is formed in the top of the packed tower, a spray header is arranged at the bottom of the smoke exhaust hole, and the spray header is communicated with the heat exchange water outlet pipe.
Further, one side of the packed tower is provided with an overflow port and a water outlet.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, the heat exchange water inlet pipe and the heat exchange water outlet pipe are arranged in the packed tower, the heat exchange water inlet pipe and the heat exchange water outlet pipe are connected with the hot water heat exchange side of the heat exchanger, the cold water heat exchange side of the heat exchanger is connected with the cooling water inlet pipe and the cooling water outlet pipe, meanwhile, the heat exchange water inlet pipe and the cooling water outlet pipe are provided with the first pipeline group, the heat exchange water outlet pipe and the cooling water inlet pipe are provided with the second pipeline group, and through the first pipeline group and the second pipeline group, the cold water circulation position of the hot water heat exchange side and the cold water heat exchange side can be exchanged, so that the exchange of the acid hot water and the cold water circulation position in the packed tower is realized, and under the flushing of the acid water, the scale formed in the cold water pipeline is dissolved in the pipeline of the heat exchanger, and the heat exchange efficiency of the heat exchanger is affected by the scale is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
FIG. 2 is a schematic diagram of the first and second pipe sets according to the present utility model.
The numerical labels in the figures are represented as: 1. a packed tower; 11. a heat exchange water inlet pipe; 12. a heat exchange water outlet pipe; 13. a smoke vent; 14. a spray header; 15. an overflow port; 16. a water outlet; 2. a heat exchanger; 21. a first inlet; 22. a first outlet; 23. a second inlet; 24. a second outlet; 25. cooling the water inlet pipe; 26. cooling the water outlet pipe; 3. a first pipe group; 31. a first pipe; 32. a first switching valve; 33. a second pipe; 34. a second switching valve; 35. a third switching valve; 36. a fourth switching valve; 4. a second pipe group; 41. a third conduit; 42. a fifth switching valve; 43. a fourth conduit; 44. a sixth switching valve; 45. a seventh switching valve; 46. an eighth switching valve; 5. a first sewage drain; 51. a first blowdown switching valve; 6. a second sewage drain; 61. a second blowdown switching valve; 7. a circulation pump; 71. a third sewage drain; 72. a third blowdown switch valve; 8. and a water supplementing pipe.
Detailed Description
In order to make the objects, technical solutions and effects of the present utility model clearer and more specific, the present utility model will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In view of the shortcomings of the prior art, the present embodiment provides a flue gas cooling system, and reference may be made specifically to the following:
As shown in fig. 1, a flue gas cooling system comprises a packing tower 1, a heat exchanger 2, a first pipeline group 3 and a second pipeline group 4, wherein the packing tower 1 is a container for inputting flue gas and cooling the flue gas, a heat exchange water inlet pipe 11 and a heat exchange water outlet pipe 12 are arranged in the packing tower 1, the heat exchange water outlet pipe 12 is positioned at the top of the packing tower 1 and sprays and cools the flue gas, the heat exchange water inlet pipe 11 is positioned at the bottom of the packing tower 1 and is used for discharging water after heat exchange, the heat exchanger 2 is positioned at one side of the packing tower 1, the heat exchanger 2 comprises a hot water heat exchange side and a cold water heat exchange side, heat exchange is realized through heat transfer of hot water and cold water, the hot water heat exchange side of the heat exchanger 2 is provided with a first inlet 21 and a first outlet 22 which are mutually communicated, the cold water heat exchange side is provided with a second inlet 23 and a second outlet 24 which are mutually communicated, the first inlet 21 of the heat exchanger 2 is communicated with the heat exchange water inlet pipe 11, the first outlet 22 of the heat exchanger 2 is communicated with the heat exchange water outlet pipe 12, the second inlet 23 of the heat exchanger 2 is communicated with the cooling water inlet pipe 25, the second outlet 24 of the heat exchanger 2 is communicated with the cooling water outlet pipe 26, the cooling water outlet pipe 26 and the cooling water inlet pipe 25 are respectively connected with an external cooling tower inlet and outlet, cold water is provided for the heat exchanger 2 so as to enable hot water in the filler tower 1 to exchange heat with the cold water, a loop is formed by the cooling tower, the cooling water inlet pipe 25 and the cooling water outlet pipe 26 for continuous heat exchange, the first pipeline group 3 is arranged on the heat exchange water inlet pipe 11 and the cooling water outlet pipe 26, the second pipeline group 4 is arranged on the heat exchange water outlet pipe 12 and the cooling water inlet pipe 25, the water outlet position of the heat exchange water inlet pipe 11 is connected at the second outlet 24 through the first pipeline group 3 and the second pipeline group 4, the water inlet position of the cooling water outlet pipe 26 is connected at the first inlet 21, the water inlet position of the heat exchange water outlet pipe 12 is connected to the second inlet 23, the water outlet position of the cooling water inlet pipe 25 is connected to the first outlet 22, and the hot water on the hot water heat exchange side and the cold water on the cold water heat exchange side are exchanged, wherein the hot water is used for washing the flue gas and has acidity, so that scale can be dissolved.
Specifically, high-temperature flue gas enters and exits from the packing tower 1, because of process requirements, the flue gas needs to be cooled, a heat exchange water outlet pipe 12 is arranged at the top of the packing tower 1, cold water is sprayed out of the heat exchange water outlet pipe 12, so that the cold water is in contact with the high-temperature flue gas and cools the flue gas, the cold water of the heat exchange water outlet pipe 12 is in heat exchange with the high-temperature flue gas to form hot water, and has certain acidity, the hot water is connected with a first inlet 21 of the heat exchanger 2 through a heat exchange water inlet pipe 11, exchanges heat through the heat exchanger 2, cold water is discharged from a first outlet 22 and enters the heat exchange water outlet pipe 12, the high-temperature flue gas is cooled circularly, and meanwhile, a second inlet 23 and a second outlet 24 of the heat exchanger 2 are respectively connected with a cooling water inlet pipe 25 and a cooling water outlet pipe 26 to circularly provide cold water for heat exchange;
After a certain time of heat exchange, scale can be generated in the pipeline between the second inlet 23 and the second outlet 24 of the heat exchanger 2, when the scale is more, the heat exchange efficiency of the heat exchanger 2 is affected, the water outlet of the heat exchange water inlet pipe 11 is exchanged from the first inlet 21 to the second outlet 24 through the first pipeline group 3 and the second pipeline group 4, the water inlet of the heat exchange water outlet pipe 12 is exchanged to the second inlet 23, the water outlet of the cooling water inlet pipe 25 is exchanged to the first outlet 22, the water inlet of the cooling water outlet pipe 26 is exchanged to the first inlet 21, thereby realizing that hot water in the filler tower 1 enters the pipeline of the heat exchanger 2 for generating the scale, the hot water in the filler tower 1 is cooled by flue gas to generate dilute sulfuric acid, the scale is dissolved and washed by the dilute sulfuric acid, the scale is removed, the heat exchange efficiency of the heat exchanger 2 is increased, the cleaning of the scale is realized through the regular exchange of the first pipeline group 3 and the second pipeline group 4, and the heat exchange efficiency of the heat exchanger 2 is kept.
Further, the heat exchanger 2 may be a plate heat exchanger.
As shown in fig. 2, the first pipeline group 3 comprises a first pipeline 31, a second pipeline 33, a third switch valve 35 and a fourth switch valve 36, one end of the first pipeline 31 is connected with a water inlet pipe of the heat exchanger 2, the other end of the first pipeline is connected with the cooling water outlet pipe 26, a first switch valve 32 is arranged in the first pipeline 31, one end of the second pipeline 33 is connected with the cooling water outlet pipe 26, the other end of the second pipeline 33 is connected with the heat exchange water inlet pipe 11, a second switch valve 34 is arranged in the second pipeline 33, a third switch valve 35 is arranged between a connection point of the first pipeline 31 and the heat exchange water inlet pipe 11 and a connection point of the second pipeline 33 and the heat exchange water inlet pipe 11, and a fourth switch valve 36 is arranged between a connection point of the first pipeline 31 and the cooling water outlet pipe 26 and a connection point of the second pipeline 33 and the cooling water outlet pipe 26;
When the pipeline does not need to be replaced, the first switch valve 32 and the second switch valve 34 are closed, the third switch valve 35 and the fourth switch valve 36 are opened, so that the heat exchange water inlet pipe 11 is connected with the first inlet 21, and the cooling water outlet pipe 26 is connected with the second outlet 24; when the pipeline needs to be replaced, the first switch valve 32 and the second switch valve 34 are opened, the third switch valve 35 and the fourth switch valve 36 are closed, the heat exchange water inlet pipe 11 is filled with water, the water enters from the second inlet 23, scale inside the heat exchanger 2 is dissolved and washed, and the cooling water outlet pipe 26 is communicated with the first inlet 21 for water outlet.
As shown in fig. 2, the second pipe group 4 includes a third pipe 41, a fourth pipe 43, a seventh switching valve 45 and an eighth switching valve 46, one end of the third pipe 41 is connected with the heat exchange water outlet pipe 12, the other end is connected with the cooling water inlet pipe 25, a fifth switching valve 42 is arranged in the third pipe 41, one end of the fourth pipe 43 is connected with the cooling water inlet pipe 25, the other end is connected with the heat exchange water outlet pipe 12, a sixth switching valve 44 is arranged in the fourth pipe 43, a seventh switching valve 45 is arranged between the connection point of the third pipe 41 and the heat exchange water outlet pipe 12 and the connection point of the fourth pipe 43 and the heat exchange water outlet pipe 12, and an eighth switching valve 46 is arranged between the connection point of the third pipe 41 and the cooling water inlet pipe 25 and the connection point of the fourth pipe 43 and the cooling water inlet pipe 25;
When the pipeline does not need to be replaced, the fifth switch valve 42 and the sixth switch valve 44 are in a closed state, the seventh switch valve 45 and the eighth switch valve 46 are in an open state, so that the heat exchange water outlet pipe 12 is communicated with the first outlet 22, the cooling water inlet pipe 25 is communicated with the second inlet 23, and the heat exchange is performed by matching the heat exchange water inlet pipe 11 and the cooling water outlet pipe 26, and water flows on two sides in the heat exchanger 2 reversely flow; when the pipelines need to be replaced, the fifth switch valve 42 and the sixth switch valve 44 are opened, the seventh switch valve 45 and the eighth switch valve 46 are closed, so that the water inlet of the heat exchange water outlet pipe 12 is communicated with the second inlet 23, the water outlet of the cooling water inlet pipe 25 is communicated with the first outlet 22, and the first pipeline group 3 is matched, pipeline interchange on two sides of the heat exchanger 2 is realized, hot water in the packed tower 1 enters through the second outlet 24 and the second inlet 23, acid in the hot water dissolves scale and is flushed away under flowing, cooling water enters from the first outlet 22, the first inlet 21 exits, pipeline interchange on two sides of the heat exchanger 2 is realized, and the heat exchange efficiency in the heat exchanger 2 is ensured through the first pipeline group 3 and the second pipeline group 4.
As shown in fig. 1 and fig. 2, a first drain pipe 5 is disposed on one side of the cooling water inlet pipe 25 near the cooling tower, a first drain switch valve 51 is disposed in the first drain pipe 5, and under normal conditions, the first drain switch valve 51 is in a closed state, when the pipe needs to be replaced, acidic liquid exists in the pipe between the first inlet 21 and the first outlet 22, water is introduced after the pipe is switched, so that the cooling water pipe 26 is replaced with the acidic liquid, when the cooling water returns into the cooling tower, corrosion and other damages are caused in the cooling tower, and by opening the first drain switch valve 51, the liquid between the first inlet 21 and the first outlet 22 enters the cooling water pipe 26 and then enters the first drain pipe 5 to be discharged, so that the acidic liquid is prevented from entering the cooling tower; when the pipes are replaced, the acidic liquid between the second inlet 23 and the second outlet 24 will also be flushed down the inlet water of the cooling inlet pipe 25 into the first sewage pipe 5 after the pipes are switched.
Further, the first sewage disposal switch valve 51 is arranged on one side far away from the first pipeline group 3, and the outlet end of the first sewage disposal pipeline 5 is communicated with the sewage disposal station, so that sewage is conveniently treated.
As shown in fig. 1, a second sewage drain pipe 6 is disposed on one side of the heat exchange water inlet pipe 11 close to the packed tower 1, a second sewage drain switch valve 61 is disposed inside the second sewage drain pipe 6, the second sewage drain pipe 6 is located on one side far away from the second pipeline group 4, when the acid liquid inside the packed tower 1 dissolves and washes the scale, the scale is disintegrated or dissolved to generate particles, the particles enter the packed tower 1 and can be deposited in the packed tower 1, and the scale and the particles are discharged by opening the second sewage drain switch valve 61 of the second sewage drain pipe 6 when the pipes are switched.
The outlet end of the second sewage drain pipe 6 is connected with sewage treatment for sewage treatment.
As shown in fig. 1, a circulating pump 7 is arranged at one side of a heat exchange water inlet pipe 11, which is close to a packed tower 1, and is used for extracting liquid in the packed tower 1, so that the liquid in the packed tower 1 circularly flows in the heat exchange water inlet pipe 11 and a heat exchange water outlet pipe 12, meanwhile, a third sewage draining pipeline 71 is arranged at one side of the circulating pump 7, which is far away from the packed tower 1, a third sewage draining switch valve 72 is arranged in the third sewage draining pipeline 71, and an acid detection sensor is arranged at the bottom of the packed tower 1;
In the normal state of the third blow-down switch valve 72, the third blow-down switch valve 72 is in a closed state, the acidity value of the cooling liquid in the packed tower 1 is detected by the acidity detection sensor, and when the detected value reaches a preset value, the liquid in the packed tower 1 is discharged by opening the third blow-down switch valve 72.
Further, a water supplementing pipe 8 is arranged on one side of the packing tower 1, one end of the water supplementing pipe 8 is communicated with the inside of the packing tower 1, the other end of the water supplementing pipe is communicated with an external water supply pump, and after the liquid in the packing tower 1 is discharged, water supplementing can be carried out through the water supplementing pipe 8, and circulating flow is carried out through a circulating pump 7.
Further, the top of the packing tower 1 is provided with a smoke exhaust hole 13 for exhausting the cooled smoke, one side of the packing tower 1 is provided with a smoke inlet, the bottom of the smoke exhaust hole 13 is provided with a spray header 14, the spray header 14 is communicated with a heat exchange water outlet pipe 12, and water after heat exchange is sprayed out through the spray header to cool the smoke better.
Further, one side of the packing tower 1 is provided with an overflow port 15 and a water outlet 16, the overflow port 15 and the water outlet 16 are respectively communicated with a pipeline, the other end of the pipeline is connected to a collecting tank, the overflow port 15 is used for controlling the water level in the packing tower 1, the water level is prevented from being too high, the occupied space of smoke is small, when the smoke is too much, the smoke cannot be effectively cooled, and the water outlet 16 is used for discharging residual scale and particles in water after heat exchange.
Further, a pressure gauge and a thermometer are arranged on one side of the heat exchange water outlet pipe 12, which is close to the packing tower 1, one side of the cooling water inlet pipe 25, which is close to the cooling tower, and one side of the cooling water outlet pipe 26, which is close to the cooling tower, wherein the pressure gauge is used for detecting the pressure inside the pipeline and preventing the pipeline from being broken due to overlarge pressure, and the thermometer is used for detecting whether the water temperature inside the pipeline reaches a preset value or not, so that the cooling efficiency and the like inside the cooling tower are adjusted.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosed embodiments. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
Claims (10)
1. The utility model provides a flue gas cooling system, includes packed tower and heat exchanger, the heat exchanger includes hot water heat exchange side and cold water heat exchange side, its characterized in that still includes:
The heat exchange water inlet pipe and the heat exchange water outlet pipe are arranged in the packing tower at one end, and the other end is connected with the hot water heat exchange side; the cold water heat exchange side is connected with a cooling water inlet pipe and a cooling water outlet pipe;
The hot water cooling device comprises a heat exchange water inlet pipe, a cooling water inlet pipe, a heat exchange water outlet pipe, a first pipeline group and a second pipeline group, wherein the first pipeline group is arranged on the heat exchange water inlet pipe and the cooling water outlet pipe, and the second pipeline group is arranged on the heat exchange water outlet pipe and the cooling water inlet pipe, and hot water on the hot water heat exchange side and cold water circulation positions on the cold water heat exchange side are exchanged through the first pipeline group and the second pipeline group.
2. The flue gas cooling system of claim 1, wherein the first duct set includes:
One end of the first pipeline is connected with the heat exchange water inlet pipe, the other end of the first pipeline is connected with the cooling water outlet pipe, and a first switch valve is arranged in the first pipeline;
One end of the second pipeline is connected with the cooling water outlet pipe, the other end of the second pipeline is connected with the heat exchange water inlet pipe, and a second switch valve is arranged in the second pipeline;
The third switch valve is arranged between the connection point of the first pipeline and the heat exchange water inlet pipe and the connection point of the second pipeline and the heat exchange water inlet pipe;
The fourth switch valve is arranged between the connection point of the first pipeline and the cooling water outlet pipe and the connection point of the second pipeline and the cooling water outlet pipe.
3. The flue gas cooling system of claim 1, wherein the second duct set includes:
one end of the third pipeline is connected with the heat exchange water outlet pipe, the other end of the third pipeline is connected with the cooling water inlet pipe, and a fifth switch valve is arranged in the third pipeline;
One end of the third pipeline is connected with the cooling water inlet pipe, the other end of the third pipeline is connected with the heat exchange water outlet pipe, and a sixth switching valve is arranged in the fourth pipeline;
The seventh switch valve is arranged between the connection point of the third pipeline and the heat exchange water outlet pipe and the connection point of the fourth pipeline and the heat exchange water outlet pipe;
And the eighth switch valve is arranged between the connection point of the third pipeline and the cooling water inlet pipe and the connection point of the fourth pipeline and the cooling water inlet pipe.
4. The flue gas cooling system according to claim 1, wherein the cooling water inlet pipe and the cooling water outlet pipe are respectively connected to an inlet and an outlet of an external cooling tower, a first sewage drain pipe is arranged on one side of the cooling water inlet pipe close to the cooling tower, and a first sewage drain switch valve is arranged in the first sewage drain pipe.
5. The flue gas cooling system according to claim 1, wherein a second blowdown pipe is arranged on one side of the heat exchange water inlet pipe close to the packed tower, and a second blowdown switch valve is arranged inside the second blowdown pipe.
6. A flue gas cooling system according to claim 1, wherein the heat exchange inlet pipe is provided with a circulation pump adjacent to one side of the packed tower for pumping liquid inside the packed tower.
7. The flue gas cooling system according to claim 6, wherein a third sewage drain pipe is arranged on one side of the circulating pump away from the packed tower, and a third sewage drain switch valve is arranged inside the third sewage drain pipe.
8. The flue gas cooling system according to claim 7, wherein a water supplementing pipe is arranged at one side of the packed tower, one end of the water supplementing pipe is communicated with the inside of the packed tower, and the other end of the water supplementing pipe is communicated with an external water supply pump.
9. The flue gas cooling system according to claim 1, wherein a flue gas vent is formed in the top of the packed tower, a spray header is arranged at the bottom of the flue gas vent, and the spray header is communicated with the heat exchange water outlet pipe.
10. The flue gas cooling system according to claim 1, wherein one side of the packed tower is provided with an overflow port and a drain port.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322651159.7U CN220959708U (en) | 2023-09-28 | 2023-09-28 | Flue gas cooling system |
| DE202024104386.3U DE202024104386U1 (en) | 2023-09-28 | 2024-08-03 | A flue gas cooling system |
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| CN202322651159.7U CN220959708U (en) | 2023-09-28 | 2023-09-28 | Flue gas cooling system |
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| CN220959708U true CN220959708U (en) | 2024-05-14 |
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| CN202322651159.7U Active CN220959708U (en) | 2023-09-28 | 2023-09-28 | Flue gas cooling system |
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| CN (1) | CN220959708U (en) |
| DE (1) | DE202024104386U1 (en) |
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| DE202024104386U1 (en) | 2024-08-23 |
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