CN105056718B - A kind of high-efficiency water-saving wet desulphurization absorption tower and application - Google Patents
A kind of high-efficiency water-saving wet desulphurization absorption tower and application Download PDFInfo
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- CN105056718B CN105056718B CN201510449697.5A CN201510449697A CN105056718B CN 105056718 B CN105056718 B CN 105056718B CN 201510449697 A CN201510449697 A CN 201510449697A CN 105056718 B CN105056718 B CN 105056718B
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Abstract
The present invention relates to a kind of high-efficiency water-saving wet desulphurization absorption tower, including reclaiming water collecting device, smoke condensation device in tower, recycle-water collection settler, demister, smoke inlet and exhanst gas outlet outside tower in absorption tower body, storage slurries section, absorbent circulated sprinkling pipeline, tower, set gradually from the bottom to top in absorption tower body between exhanst gas outlet and smoke inlet absorbent circulated sprinkling pipeline, water collecting device is reclaimed in tower, smoke condensation device and demister in tower, the outer recycle-water of the tower collects settler, and to be arranged at absorption tower sheet external.Absorption tower of the present invention can save the energy with the condensed water in high efficiente callback flue gas after desulfurization, mist eliminator flushing water, while reducing wet desulfurization system water consume, so as to greatly reduce the consumption of desulphurization system process water, reach the effect of water saving.
Description
Technical field
The invention belongs to environmental technology field, it is related to wet flue gas desulfurization absorption tower, especially a kind of high-efficiency water-saving wet method
Desulfuration absorbing tower and application.
Background technology
Flue gas desulfurization field is administered in atmosphere pollution, wet desulfurizing process has that technology maturation is reliable, desulfuration efficiency is high,
The features such as coal is adaptable, is a kind of most widely used flue gas desulfurization technique.But, water resource in wet desulfurizing process
Consumption is distinct issues the most in recent years greatly.Desulphurization system water consume is mainly comprised the following steps：Gypsum carry water and
The crystallization water, desulfurization tower flue gas carry water, adsorption tower smoke evaporation water, discharge of wastewater water；Wherein, adsorption tower smoke evaporation water, which is accounted for, is
Unite total water consumption proportion highest, account for 90% with left and right.Therefore, the evaporation water in the exiting flue gas of absorption tower is reclaimed, to drop
Low desulphurization system water consumption has very important significance.At present, still inhaled without a kind of desulfurization that can realize this kind of function
Receive tower.
Therefore, applicant is improved and innovated on the basis of conventional suction tower, improves absorption tower knot
Structure, there is provided a series of apparatus for recovering, has efficiently reclaimed and water and mist eliminator flushing water is evaporated in exiting flue gas, and reuse with
Desulphurization system, reduces the water consumption of desulphurization system.
By retrieval, the patent publication us related to present patent application is not yet found.
The content of the invention
It is an object of the invention to overcome in place of the deficiencies in the prior art efficiently to reclaim wet desulfurization system there is provided one kind
In smoke evaporative water and mist eliminator flushing water, and recycle in desulphurization system, reduce the efficient of wet desulfurization system water consume
Water saving wet desulphurization absorption tower and application, the desulfuration absorbing tower are worked using thermodynamic principles, and application method is easy, preferably solves
The problem of water resource waste in wet desulfurization system of having determined, the absorption tower can apply to the desulfurization of flue gas.
The purpose of the present invention is achieved through the following technical solutions：
A kind of high-efficiency water-saving wet desulphurization absorption tower, the absorption tower includes absorption tower body, storage slurries section, absorbent
Smoke condensation device, the outer recycle-water of tower collect settler, demisting in the interior recovery water collecting device of circulated sprinkling pipeline, tower, tower
Device, smoke inlet and exhanst gas outlet, top and the setting exhanst gas outlet, institute of being connected in the body of absorption tower of the absorption tower body
State the absorption tower below the middle and lower part of absorption tower body and the setting smoke inlet that is connected in the body of absorption tower, the smoke inlet
Body bottom portion is coaxially provided with storage slurries section, the absorption tower body between exhanst gas outlet and smoke inlet with absorption tower body
Recovery water collecting device in absorbent circulated sprinkling pipeline, tower, smoke condensation device and demisting in tower are set gradually from the bottom to top
Device, the outer recycle-water of the tower collects settler and is connected setting simultaneously with reclaiming water collecting device, storage slurries section in tower respectively
It is arranged at absorption tower sheet external.
Moreover, the outer recycle-water of the tower collect settler include device body, condensing unit interface pipeline, gas vent and
Outlet conduit interface, described device body is the case shape of hollow closing, top and the phase inside device body of the device body
Connection sets gas vent, and the centre of the middle and lower part of the device body vertically sets a dividing plate, and the dividing plate is by device body
Being divided into liquid in left box body and right case, left box body can be out of, dividing plate top overflow to right case；The left box body with
Condensing unit interface pipeline is connected setting, the bottom of one end of the condensing unit interface pipeline with reclaiming water collecting device in tower
The setting that is connected is exported, the recovery condensed water water inlet that the other end of the condensing unit interface pipeline is set by the top of left box body connects
Mouth is stretched into and extended at 1/3 height away from left box body bottom, and the recovery condensed water water inlet interface is collected located at recycle-water in tower
The lower section of device and the top of operation liquid level in absorption tower body；
The bottom of the left box body and right case respectively sets a cone bucket, the outlet at bottom end of the cone bucket with a UNICOM
Pipeline is connected setting, and the unicom pipeline is connected setting with storage slurries section, and the water side of the unicom pipeline is installed on absorption
Below the operation liquid level of tower body；
The exterior side wall top of the right case sets an outlet conduit interface.
Moreover, two layers of demister is set in the tower above smoke condensation device.
Moreover, the gas vent is arranged on the top of device body or top outer wall.
Moreover, being reclaimed in the tower, water collecting device is provided with air rising hole structure and bottom is provided with cone-shaped collection bucket.
Moreover, in the tower smoke condensation device include heat exchanger tube, the heat exchanger tube using snakelike tubular construction plastic tube and
It is horizontally disposed.
Application of the high-efficiency water-saving wet desulphurization absorption tower in terms of wet process of FGD as described above.
Advantages and positive effects of the present invention are：
1st, absorption tower of the present invention can with the condensed water in high efficiente callback flue gas after desulfurization, mist eliminator flushing water, and through tower outside
Recycle-water collects supernatant after settler processing and returns to desulphurization system for mist eliminator flushing, system pipeline flushing, slurrying system
Low concentration gypsum slurries gravity flow in controlling slurry etc., the absorption tower lower storage slurries section returns to desulfurizing tower storage slurry section, saves
The energy, while reducing wet desulfurization system water consume, so as to greatly reduce the consumption of desulphurization system process water, has reached water saving
Effect.
2nd, absorption tower of the present invention is with low cost, is worked using thermodynamic principles, and application method is easy, and operation is convenient, be difficult
Break down, operation is convenient, adequately achieves recycling for the energy, preferably solve water resource wave in wet desulfurization system
The problem of taking, great lot of water resources is saved, environment protecting significantly, can be widely applied to the wet desulphurization of flue gas.
3rd, absorption tower of the present invention sets recovery water collecting device in tower, smoke condensation device in tower in absorption tower, is used for
Water is evaporated in condensation desulfurizing tower exiting flue gas and smoke condensation device in condensed water and mist eliminator flushing water, tower is collected and followed with power plant
Ring cooling water is connected；Set the outer recycle-water of tower to collect settler outside absorption tower, reclaimed for collecting in tower in water collecting device
Water, and large granular impurity is removed through precipitation, supernatant returns to desulphurization system reuse；The outer recycle-water of tower is collected in the middle of settler
Dividing plate is set, is divided into left box body and right case；Left box body is connected with reclaiming water collecting device in tower using pipeline, to being reclaimed in tower
Water in water collecting device, carries out preliminary sedimentation, and large granular impurity is precipitated to bottom cone bucket, and storage slurries are returned using pipeline
Section；Supernatant overflow is to right case, and precipitation goes the removal of impurity again in right case, and contamination precipitation utilizes pipeline to bottom cone bucket
Return to storage slurries section；The supernatant of right case, desulphurization system reuse is returned using the outlet conduit interface overflow of upper portion side wall.
Brief description of the drawings
Fig. 1 is the structure connection diagram on absorption tower of the present invention；
Fig. 2 is A portions structure enlarged diagram in Fig. 1；
Fig. 3 is B portions structure enlarged diagram in Fig. 1.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not limit
Qualitatively, it is impossible to which protection scope of the present invention is limited with this.
Structure, annexation and the method not being described in detail in patent of the present invention, can be understood as public affairs in the art
Know general knowledge.
This absorption tower is improved and innovated on the basis of conventional suction tower, improves absorption tower structure, there is provided
A series of apparatus for recovering.
A kind of high-efficiency water-saving wet desulphurization absorption tower, as shown in figure 1, the absorption tower includes absorption tower body 2, storage slurry
Smoke condensation device 4, the outer recycle-water of tower in the interior recovery water collecting device 5 of liquid section 19, absorbent circulated sprinkling pipeline 21, tower, tower
Collect in settler, demister 3, smoke inlet 20 and exhanst gas outlet 1, the top of the absorption tower body and absorption tower body
Be connected setting exhanst gas outlet, middle and lower part and the setting smoke inlet, institute of being connected in the body of absorption tower of the absorption tower body
State the absorption tower body bottom portion below smoke inlet and be coaxially provided with storage slurries section with absorption tower body, in exhanst gas outlet and flue gas
Set gradually from the bottom to top in absorption tower body between entrance reclaim in absorbent circulated sprinkling pipeline, tower water collecting device,
Smoke condensation device and demister in tower, the outer recycle-water of the tower collect settler respectively with reclaimed in tower water collecting device,
Storage slurries section, which is connected, to be set and to be arranged at absorption tower sheet external.
In the present embodiment, the outer recycle-water of the tower, which collects settler, includes device body 11, condensing unit mouthpiece
Road 7, gas vent 9 and outlet conduit interface 13, described device body are the case shape of hollow closing, the top of the device body
Be connected setting gas vent with inside device body, and the centre of the middle and lower part of the device body vertically sets a dividing plate
10, device body is divided into liquid in left box body 16 and right case 12, left box body by the dividing plate can be from the top overflow of dividing plate
To right case；The left box body is connected setting with condensing unit interface pipeline, one end of the condensing unit interface pipeline with
The outlet at bottom 6 that water collecting device is reclaimed in tower is connected setting, and the other end of the condensing unit interface pipeline is by left box body
The recovery condensed water water inlet interface 8 that top is set is stretched into and extended at 1/3 height away from left box body bottom, the recovery condensed water
Water inlet interface reclaims the top of the lower section of water collecting device and the operation liquid level in absorption tower body in tower；
The bottom of the left box body and right case respectively sets a cone bucket 15, and the outlet at bottom end of the cone bucket is with one
Thread a pipe and 17 be connected setting, the unicom pipeline is connected setting with storage slurries section, and the water side 18 of the unicom pipeline is installed
Below the operation liquid level of absorption tower body；
The exterior side wall top of the right case sets an outlet conduit interface, and the outlet conduit interface can be with desulfurization system
System 14 is connected so that the supernatant of right case being capable of overflow return desulphurization system reuse.
In the present embodiment, the gas vent is arranged on the top of device body or top outer wall.
In the present embodiment, smoke condensation device can be connected with circulating cooling water of power plant (not shown) in the tower
Connect, two layers of demister is set in the tower above smoke condensation device.
In the present embodiment, as shown in Fig. 2 recovery water collecting device is provided with air rising hole structure in the tower and bottom is provided with
Cone-shaped collection bucket 22；Or, smoke condensation device includes heat exchanger tube in the tower, and the heat exchanger tube uses the plastics of snakelike tubular construction
Manage and horizontally disposed.
High-efficiency water-saving wet desulphurization absorption tower as described above can be applied in terms of wet process of FGD.
The operation principle of high-efficiency water-saving wet desulphurization absorption tower of the present invention is as follows：
High-efficiency water-saving wet desulphurization absorption tower of the present invention sets recovery water collecting device in tower, smoke condensation device in tower,
For condense water is evaporated in desulfurizing tower exiting flue gas and collect in condensed water and mist eliminator flushing water, tower smoke condensation device with it is electric
Factory's recirculated cooling water is connected；Set the outer recycle-water of tower to collect settler outside absorption tower, dress is collected for collecting recycle-water in tower
Middle water is put, and large granular impurity is removed through precipitation, supernatant returns to desulphurization system reuse；The outer recycle-water of tower collects settler
Centre sets dividing plate, is divided into left box body and right case；Left box body is connected with reclaiming water collecting device in tower using pipeline, in tower
Water in water collecting device is reclaimed, preliminary sedimentation is carried out, large granular impurity is precipitated to bottom cone bucket, storage slurry is returned using pipeline
Liquid section；Supernatant overflow is to right case, and precipitation goes the removal of impurity again in right case, and contamination precipitation utilizes pipe to bottom cone bucket
Road returns to storage slurries section；The supernatant of right case, returns to desulphurization system using the outlet conduit interface overflow of upper portion side wall and returns
With.
This high-efficiency water-saving wet desulphurization absorption tower has efficiently reclaimed evaporation water and mist eliminator flushing water in flue gas, greatly
Desulphurization system water has been saved on ground, and the absorption tower is with low cost, operation facility, is not susceptible to failure, operation is convenient, can be with
It is widely used in wet process of FGD.
Claims (5)
1. a kind of high-efficiency water-saving wet desulphurization absorption tower, it is characterised in that：The absorption tower includes absorption tower body, storage slurries
Section, water collecting device is reclaimed in absorbent circulated sprinkling pipeline, tower, smoke condensation device, the outer recycle-water of tower collect precipitation in tower
Device, demister, smoke inlet and exhanst gas outlet, top and the setting cigarette that is connected in the body of absorption tower of the absorption tower body
Gas is exported, middle and lower part and the setting smoke inlet that is connected in the body of absorption tower of the absorption tower body, under the smoke inlet
The absorption tower body bottom portion of side is coaxially provided with storage slurries section, the suction between exhanst gas outlet and smoke inlet with absorption tower body
Receive and set gradually recovery water collecting device in absorbent circulated sprinkling pipeline, tower, flue gas condensing in tower in tower body from the bottom to top
Device and demister, the outer recycle-water of the tower collect settler respectively with reclaiming water collecting device, storage slurries section phase in tower
Connection is set and to be arranged at absorption tower sheet external；
The outer recycle-water of the tower, which collects settler, includes device body, condensing unit interface pipeline, gas vent and outlet conduit
Interface, described device body is the case shape of hollow closing, top and the setting that is connected inside device body of the device body
Gas vent, the centre of the middle and lower part of the device body vertically sets a dividing plate, and device body is divided into a left side by the dividing plate
Liquid can be out of, dividing plate top overflow to right case in casing and right case, left box body；The left box body and condensing unit
Interface pipeline is connected setting, and one end of the condensing unit interface pipeline is connected with reclaiming the outlet at bottom of water collecting device in tower
Logical to set, the recovery condensed water water inlet interface that the other end of the condensing unit interface pipeline is set by the top of left box body is stretched into simultaneously
Extend at 1/3 height away from left box body bottom, the recovery condensed water water inlet interface is reclaimed under water collecting device in tower
The top of operation liquid level square and in absorption tower body；
The bottom of the left box body and right case respectively sets a cone bucket, the outlet at bottom end of the cone bucket with a unicom pipeline
Be connected setting, and the unicom pipeline is connected setting with storage slurries section, and the water side of the unicom pipeline is installed on absorption tower sheet
Below the operation liquid level of body；
The exterior side wall top of the right case sets an outlet conduit interface；
Two layers of demister is set in the tower above smoke condensation device.
2. high-efficiency water-saving wet desulphurization absorption tower according to claim 1, it is characterised in that：The gas vent is arranged at dress
Put on top or the top outer wall of body.
3. high-efficiency water-saving wet desulphurization absorption tower according to claim 1, it is characterised in that：Recycle-water is collected in the tower
Device is provided with air rising hole structure and bottom is provided with cone-shaped collection bucket.
4. high-efficiency water-saving wet desulphurization absorption tower according to claim 1, it is characterised in that：Flue gas condensing is filled in the tower
Put including heat exchanger tube, the heat exchanger tube uses the plastic tube of snakelike tubular construction and horizontally disposed.
5. the answering in terms of wet process of FGD of the high-efficiency water-saving wet desulphurization absorption tower as described in any one of Claims 1-4
With.
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