CN209596919U - A kind of flue gas desulfurization device with slurries filtering function - Google Patents
A kind of flue gas desulfurization device with slurries filtering function Download PDFInfo
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- CN209596919U CN209596919U CN201821999747.2U CN201821999747U CN209596919U CN 209596919 U CN209596919 U CN 209596919U CN 201821999747 U CN201821999747 U CN 201821999747U CN 209596919 U CN209596919 U CN 209596919U
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- flue gas
- slurries
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Abstract
A kind of flue gas desulfurization device with slurries filtering function, including at least one desulfurizing tower, which is characterized in that the flue gas desulfurization device further includes slurry filter.Through the slurry filter, treated that most of slurries are back in desulfurizing tower continues on for desulfurization process, the slurries less containing particulate matter that another part filters out can be used for other purposes, to maintain the balance of slurries amount in desulphurization system, again extra slurries immediately, effectively handle and utilize, be had the function of water-saving, environmentally friendly.System is simple, reliable for operation, and operation energy consumption is small.
Description
Technical field
The utility model relates to a kind of flue gas desulfurization devices with slurries filtering function.
Background technique
In conventional wet lay flue gas desulphurization system, it will usually which multiple spray equipments and matched slurries are set in desulfurizing tower
Pump, under the driving of slurries pump power, desulfurization slurry is via desulfurization slurry pond-pipeline-slurries pump-pipeline-spray equipment nozzle
It is sprayed, after desulfurization slurry carries out washing desulphurization dedusting to flue gas, returns to slurry pool and continue cycling through use.In order to maintain desulfurization
The normal table of system is run, and the liquid level needs of slurry pool are maintained within a certain range, that is to say, that into the moisture of desulfurizing tower
It should keep centainly balancing with the moisture of outflow desulfurizing tower.But increased into the reduction of the flue-gas temperature of desulfurizing tower or humidity,
Or cooling etc. is carried out to desulfurization slurry, the evaporation capacity that all will lead in desulfurizing tower is reduced, and the moisture of condensation increases, causes
The increased amount of moisture is increased more than the amount for consuming and flowing out the reduction of desulfurizing tower moisture, slurries pit level in desulfurizing tower, thus to de-
The water balance of sulphur system brings difficulty.Even if reducing the dosage of the process water of desulfurizing tower as far as possible sometimes, still cannot maintain de-
Water balance in sulphur system.For this reason, it may be necessary to extract the water of certain amount and quality from desulfurization slurry.However, not having also at present
There is fairly simple, economic method.
If simply the slurries in desulphurization system are discharged, on the one hand will cause slurries cannot be fully utilized, and cause
Slurries and water resource waste, on the other hand due to the slurries do not meet discharge standard and can not direct emission, need further to locate
Reason, causes processing cost to increase.It is utilized once again if the moisture in slurries distilled by way of flash distillation, desulfurizing tower
Water content declines in the slurries of interior recycling, and sulphur-containing substance and various pollutants concentration increase, and pH value decline reduces desulfurization
Dust removing effects, and various material concentrations increase, and cause spray system injection uneven, and atomizing effect reduces, and influences desulfurization, removes
Dirt and other effects.Moreover, on-condensible gas is extracted out by vacuum pump in flash process, other environmental pollution is also resulted in.Moreover, dodging
It is at high cost to steam device manufacturing, takes up space huge, operation energy consumption itself is big.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of flue gas desulfurization device equipped with slurry filter.
Through the slurry filter, treated that most of slurries are back in desulfurizing tower continues on for desulfurization process, another part by
The filtrate that screen pipe filter opening filters out can be used for other purposes, for example, for rinsing demisting (dirt) device in desulfurizing tower, or it is used for stone
Cream belt dewaterer filter cloth washing water, or for the preposition processing for reaching discharge or desulfurization wastewater zero-emission of desulfurization wastewater, from
And the balance of slurries amount in desulphurization system was not only maintained, but also immediately, effectively handle and utilize to extra filtrate.
For this purpose, the utility model provides a kind of flue gas desulfurization device, the flue gas desulfurization device includes at least one desulfurization
Tower, the first slurries pump and optional slurries cooling device, and the spray dress for spraying desulfurization slurry is provided in the desulfurizing tower
It sets, the desulfurization tower bottom is provided with the slurry pool for storing desulfurization slurry, it is optionally possible to be also provided with use outside desulfurizing tower
In the slurry pool of storage desulfurization slurry, the slurry pool is pumped by the first slurries to be connected with spray equipment, which is characterized in that institute
Stating flue gas desulfurization device further includes slurry filter；
The slurry filter includes shell, filter assemblies, injection point, serum outlet and filtrate (liquid；The mistake
Filter component is located in the shell, and the filter assemblies include screen pipe；The injection point and serum outlet and the filtering
The open-ended of pipe is connected；Multiple filter openings are provided on the tube wall of the screen pipe, the screen pipe is one or more；Institute
The periphery for stating screen pipe forms filtrate space, and the filtrate space is connected to the filtrate (liquid；
The injection point is connected with the arbitrary slurry pool, for the slurries in slurry pool to be input to slurries mistake
Filter device；The serum outlet is connected with the arbitrary desulfurizing tower, returns for that will flow through the slurries after whole screen pipe
To desulfurizing tower；The filtrate (liquid is for exporting filtrate；
Optionally, the slurries cooling device is arranged in series in the connecting pipeline of the slurry pool Yu the spray equipment
On, or be arranged in series on the pipeline that the serum outlet is connected to desulfurizing tower.
Preferably, the slurry pool is connected by pipeline and the first slurries pump, and the first slurries pump passes through pipeline and institute
State spray equipment connection, form serum recycle circuit, the injection point of the slurry filter by pipeline with it is described
Pipeline in serum recycle circuit is connected, and the serum outlet of the slurry filter is connected by pipeline with desulfurizing tower；
Optionally, the injection point and the loop-coupled connecting pipe of the serum recycle are pumped equipped with the second slurries；Optionally, institute
The junction for stating injection point and the serum recycle return is provided with filter screen；Optionally, in the filter screen to institute
It states and is in series with the slurries cooling device on the serum recycle return between spray equipment.
Preferably, what the slurries that the filter screen is located in the serum recycle return were flowed to the spray equipment
Within the scope of streamline.
Preferably, the slurries cooling device and the filter screen use integral structure.
When using with (list) tower Two-way Cycle, the desulfurizing tower is inside and outside to be equipped with the slurry pool, connects at this time
Mode can connect for the slurry pool and first slurries pump of the slurry pool and/or outside inside the desulfurizing tower, described
First slurries pump is connect with the spray equipment, forms serum recycle circuit.The injection point of the slurry filter
Connect with the serum recycle return or any one described slurry pool, the serum outlet can directly with the desulfurizing tower
Connection can also pass through the slurry pool outside the serum recycle return or desulfurizing tower and pipeline and the desulfurization
(the i.e. described serum outlet can be connect with the slurry pool outside the desulfurizing tower, and by outside the desulfurizing tower for tower connection
The serum recycle return that is connected of the slurry pool be connected to indirectly with the desulfurizing tower)；When using double-column in series side
When formula, connection type can be with are as follows: altogether there are two desulfurizing tower, each desulfurizing tower is equipped with the successively interconnection
Slurry pool, slurries pump, spray equipment, and constitute respective serum recycle circuit, the slurries of the slurry filter
Entrance can be connect with serum recycle circuit described in any one or any one described slurry pool, the serum outlet can with it is any
(serum outlet can directly be connect with the desulfurizing tower, can also pass through the serum recycle for a desulfurizing tower connection
Return is connect with the desulfurizing tower).That is, into the slurry filter desulfurization slurry from desulphurization system, warp
Desulphurization system is flow back into again after the screen pipe.
Preferably, the slurry pool is connected by pipeline and the first slurries pump, and the first slurries pump passes through pipeline and institute
Spray equipment connection is stated, serum recycle circuit is formed；The slurry pool is filtered by pipeline and the second slurries pump with the slurries
The injection point of device connects, and the serum outlet of the slurry filter is connected by pipeline with the desulfurizing tower；Optionally,
On the pipeline that the slurry pool is connect with the injection point of the slurry filter or the slurry of the slurry filter
On the pipeline that liquid outlet is connected with the desulfurizing tower, series connection is equipped with slurries cooling device；Optionally, the slurry pool with it is described
Slurry filter injection point connection pipeline on or the slurry filter serum outlet and the desulfurizing tower
On connected pipeline, series connection is equipped with cyclone or belt dewaterer or buffer tank.
Preferably, the serum outlet of the slurry filter passes through the pipe in pipeline and the serum recycle circuit
Road is connected；
Preferably, the serum outlet of the slurry filter is connected by the spray equipment of pipeline and the desulfurizing tower
It connects.
Preferably, the first spray equipment is separately provided in the desulfurizing tower, the serum outlet of the slurry filter is logical
Piping is connect with first spray equipment of the desulfurizing tower.
Preferably, first spray equipment is made of multiple along the desulfurization inner wall of tower nozzle that is circular layout.
Preferably, the spray centerline of multiple nozzles of first spray equipment constitutes the circle of contact in desulfurizing tower.
Since the slurry flow in desulfurizing tower circulation loop is more much larger than the slurry flow in slurry filter, the two is not
In the same horizontal line.Therefore, directly that the serum outlet of the slurry filter is original by pipeline and the desulfurizing tower
Spray equipment connection, desulfurization effect raising is not especially big.It is especially more by separately setting special first spray equipment
When a nozzle is circular layout along the desulfurization inner wall of tower and/or the spray centerline of multiple nozzles constitutes the circle of contact in desulfurizing tower,
Can to inside the desulfurizing tower flue gas and desulfurization slurry disturb, that improves flue gas and desulfurization slurry is mixed effect
Fruit further increases desulfuration efficiency.
Preferably, demisting (dirt) device is additionally provided in the desulfurizing tower upper space, and for rinsing the demisting (dirt)
The flusher of device, the filtrate (liquid are directly or indirectly connected to the flusher, for filtrate to be input to flushing
Device.It preferably, can be with series buffer water tank and/or force (forcing) pump, to mention between the filtrate (liquid and the flusher
The reliability of high system.
When using with (list) tower Two-way Cycle, the desulfurizing tower is inside and outside to be equipped with the slurry pool, connects at this time
Mode can connect for the slurry pool and second slurries pump of the slurry pool and/or outside inside the desulfurizing tower, described
Second slurries pump connect with the injection point of the slurry filter, the serum outlet can directly with the desulfurization
Tower connection, can also connect that (the i.e. described serum outlet can by the slurry pool and pipeline of the outside with the desulfurizing tower
The slurries for connecting with the slurry pool outside the desulfurizing tower, and being connected by the slurry pool outside the desulfurizing tower
Circulation loop pipeline is connected to the desulfurizing tower indirectly)；When using double-column in series mode, connection type can be with are as follows: altogether
There are two desulfurizing tower, each desulfurizing tower is equipped with the slurry pool successively interconnected, the first slurries pump, spray
Device, and constitute respective serum recycle circuit, the injection point of the slurry filter can with described in any one
Slurry pool connection, the serum outlet can be connected to desulfurizing tower described in any one (serum outlet can directly with it is described
Desulfurizing tower connection, can also be connect by the serum recycle return with the desulfurizing tower).That is, into the slurries mistake
The desulfurization slurry of device is filtered from desulphurization system, flows back into desulphurization system again after the screen pipe.
Preferably, the slurries cooling device is pipe heat exchanger or plate heat exchanger.
Preferably, the filter assemblies of the slurry filter further include the first tube sheet and the second tube sheet；Described
One tube sheet and the second tube sheet are equipped with through-hole；One end of the screen pipe passes inside or through the through-hole of first tube sheet, another
End passes inside or through the through-hole of second tube sheet；One end opening and shell and the first tube sheet of the screen pipe constitute the
One chamber is connected, and the other end opening of the screen pipe is connected with the second chamber that shell and the second tube sheet are constituted；Institute
It states shell, the first tube sheet, the second tube sheet and screen pipe and constitutes the filtrate space in the space that the screen pipe periphery is formed.
Preferably, the shell of the slurry filter includes body part, the first end socket and the second end socket, described
Body part, the first end socket and the second end socket can be integrally formed (body part, the first end socket and the second end socket at this time
Between division mode be not particularly limited), be also possible to be formed by separable assembled.The body part, the first end socket and
The shape of two end sockets is not particularly limited.First end socket and the second end socket are also possible to connect the slurry filter
A part of pipeline.
Preferably, first tube sheet is set to the body part of the shell and the junction of the first end socket, and described
Two tube sheets are set to the body part of the shell and the junction of the second end socket；The one end opening and first of the screen pipe
The first chamber that end socket and the first tube sheet are constituted is connected, the other end opening and the second end socket and the second pipe of the screen pipe
The second chamber that plate is constituted is connected；The body part of the shell, the first tube sheet, the second tube sheet and screen pipe are in the mistake
The space that chimney filter periphery is formed constitutes the filtrate space.
Preferably, the injection point is located on first end socket, and the serum outlet is located on second end socket；
Or the first chamber is divided into first branch's chamber and second branch's chamber, the injection point is set to the first branch
At end socket corresponding to chamber, the serum outlet is arranged at end socket corresponding to second branch chamber；
Preferably, the filtrate (liquid is located on the side wall of the case body portion.Preferably, the filtrate space can
To be divided into two or more mutually isolated branch's filtrate spaces, the shell corresponding to each branch's filtrate space
Side wall on be respectively arranged with filtrate (liquid.
Preferably, the filter opening aperture being arranged on the tube wall of the screen pipe is 0.01-50 microns, and the filtering length of tube is
20-300cm。
The screen pipe can be single tube screen pipe or multitube screen pipe.So-called single tube screen pipe refers to a screen pipe
In only one slurry channels, so-called multitube screen pipe refer in a screen pipe there are two or the above slurry channels.
Preferably, the screen pipe is ceramic membrane filter tube or metal membrane filter pipe.Ceramic membrane filter tube or metal film mistake
The Related product of current market can be used in chimney filter.
Preferably, the filter assemblies with two or two more parallels or can be used in series.
Beneficial effect
The flue gas desulfurization device of the utility model can be extracted de- by the filtering function of the screen pipe of slurry filter
Partial moisture in sulphur slurries to solve the equilibrium problem of slurries amount, and has section to reduce the amount of slurries in desulfurizing tower
Water, environmentally friendly function.System is simple, reliable for operation, and operation energy consumption is small.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of embodiment of the utility model flue gas desulfurization device.
Fig. 2 is the schematic diagram of another embodiment of the utility model slurry filter.
Fig. 3 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Fig. 4 A and Fig. 4 B are the schematic diagrames of an example of strainer setting, and wherein Fig. 4 A is longitudinal sectional drawing, and Fig. 4 B is horizontal
To sectional view.
Fig. 5 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Fig. 6 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Fig. 7 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Fig. 8-1 and Fig. 8-2 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Fig. 9 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Figure 10 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Figure 11 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Figure 11-1 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Figure 11-2 is a kind of arrangement schematic diagram of nozzle in the desulfurizing tower of the utility model flue gas desulfurization device.
Figure 11-3 is another arrangement schematic diagram of nozzle in the desulfurizing tower of the utility model flue gas desulfurization device.
Figure 12 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Figure 13 is the schematic diagram of another embodiment of the utility model flue gas desulfurization device.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described being given for example only property of specific embodiment is illustrated the utility model, is not intended to limit the utility model.
Wherein, identical component uses identical label.
A kind of schematic diagram of embodiment of the utility model flue gas desulfurization device is shown in Fig. 1.As shown in Figure 1, institute
Stating flue gas desulfurization device includes desulfurizing tower 1, slurry filter 2 and the first slurries pump 3.
Spray equipment 4 is provided in the desulfurizing tower, the desulfurization tower bottom is provided with slurry pool 5, and the slurry pool 5 is logical
Piping is connect with the first slurries pump 3, and the first slurries pump 3 is connect by pipeline with the spray equipment 4, is formed slurries and is followed
Loop back path.
The slurry filter 2 includes shell 6, filter assemblies 7, injection point 8, serum outlet 9 and filtrate (liquid 10.
The shell 6 includes body part 6a, the first end socket 6b and the second end socket 6c.
The filter assemblies 7 include more screen pipe 7a, the first tube sheet 7b and the second tube sheet 7c.The more screen pipe 7a
Along the radial parallel setting of the shell 6, multiple filter openings are provided on the tube wall of the screen pipe 7a, the filter opening aperture is
0.01-50 microns, the screen pipe 7a length is 20-300cm.The first tube sheet 7b is set to the body part of the shell 6
Divide the junction of 6a and the first end socket 6b, the second tube sheet 7c is set to the body part 6a and the second end socket of the shell 6
The junction of 6c, the first tube sheet 7b and the second tube sheet 7c are equipped with through-hole；One end of the screen pipe 7a passes inside or through
The through-hole of the first tube sheet 7b, the other end pass inside or through the through-hole of the second tube sheet 7c；One end of the screen pipe 7a
Portion's opening is connected with the first end socket 6b and the first tube sheet 7b first chamber 11 constituted, and the other end of the screen pipe 7a is opened
Mouth is connected with the second end socket 6c and the second tube sheet 7c second chamber 12 constituted；The body part 6a of the shell 6, first
Tube sheet 7b, the second tube sheet 7c and screen pipe 7a constitute the filtrate space in the space that the periphery of the screen pipe 7a is formed
13。
The injection point 8 is located on the first end socket 6b, and passes through the end of first chamber 11 and the screen pipe 7a
Portion's opening in communication, the serum outlet 9 are located on the second end socket 6c, and pass through second chamber 12 and the screen pipe 7a
The other end opening in communication.The filtrate (liquid 10 is located on the side wall of the body part 6a of the shell 6, the filtrate
Space 13 is connected to the filtrate (liquid 10.
The injection point 8 of the slurry filter 2 passes through pipeline and the serum recycle circuit and the slurries
Pond 5 connects, and the serum outlet 9 of the slurry filter 2 is connected by pipeline with desulfurizing tower 1.The first end socket 6b
It is also possible to connect a part of the pipeline of the slurry filter 2 with the second end socket 6c.
Working principle: contain certain solid particulate matter (generally 10-in the slurry pool 5 in the desulfurizing tower 1
40%) desulfurization slurry enters the first chamber by pipeline and injection point 8 under the driving of first slurries pump 3
In 11, followed by the first tube sheet 7b, the screen pipe 7a pipe after interior, the second tube sheet 7c, serum outlet 9, pass through pipeline
It flows back in the desulfurizing tower 1.The screen pipe 7a tube wall is equipped with multiple small filter openings, when desulfurization slurry flows through the filtering
When pipe 7a, at certain pressure (0.01-5MPa), the liquid in desulfurization slurry and the particulate matter process less than the filter opening aperture
The filter opening enters the filtrate space 13, and flows out through the filtrate (liquid 10, to realize the filtering to desulfurization slurry
And purpose of the part containing the less moisture of solid particulate matter is extracted from desulfurization slurry, it is asked to solve desulphurization system water balance
Topic creates condition.The size in the screen pipe 7a filter opening aperture, which is determined, enters the filtrate through the screen pipe 7a tube wall
The particle size and concentration level of contained solid particulate matter in the liquid in space 13.For normal desulphurization system, work as institute
When stating filter opening aperture less than 0.1 micron, the suspended matter of filtrate can reach the discharge standard of current administration request in filtrate space 13.
This filter type is cross-current flow, has preferable self-cleaning ability.It is maintained to flow through the desulfurization slurry of the screen pipe 7a
Flow velocity (0.5-6m/s) can wash away the filter cake or dirt being attached on the screen pipe 7a inner wall by filtration formation, with
Filter efficiency is improved, is prolonged the service life.
When using with (list) tower Two-way Cycle, the desulfurizing tower 1 is inside and outside to be equipped with the slurry pool 5, connects at this time
The mode of connecing can connect for the slurry pool 5 and first slurries pump 3 of the slurry pool 5 and/or outside inside the desulfurizing tower 1
It connects, the first slurries pump 3 is connect with the spray equipment 4, forms serum recycle circuit.The institute of the slurry filter 2
Injection point 8 is stated to connect with the serum recycle circuit or any one described slurry pool 5, the serum outlet 9 can directly with
The desulfurizing tower 1 connects, and can also pass through the slurry pool 5 and pipe outside the serum recycle return or desulfurizing tower 1
Road connect that (the i.e. described serum outlet 9 can be connect with the slurry pool 5 outside the desulfurizing tower 1, and be led to the desulfurizing tower 1
The serum recycle return that the slurry pool 5 crossed outside the desulfurizing tower 1 is connected connects with the desulfurizing tower 1 indirectly
It is logical, be not shown in the figure)；When using double-column in series mode, connection type includes but is not limited to: there are two desulfurizing towers 1 altogether, often
A desulfurizing tower 1 is equipped with the slurry pool 5 successively interconnected, the first slurries pump 3, spray equipment 4, and constitute
The injection point 8 in respective serum recycle circuit, the slurry filter 2 can be returned with serum recycle described in any one
Road or the connection of any one institute's slurry pool 5, the serum outlet 9 can connect that (slurries go out with desulfurizing tower 1 described in any one
Mouth can directly be connect with the desulfurizing tower, can also pass through the serum recycle return or other pipelines and the desulfurization
Tower connection).That is, into the slurry filter 2 desulfurization slurry from desulphurization system, flowed again after the screen pipe 7a
It is back to desulphurization system.
Preferentially, the filtrate space 13 can be divided into two or more mutually isolated branch's filtrate spaces, each
Filtrate (liquid 10, each branch's filtrate are respectively arranged on the body part 6a side wall corresponding to branch's filtrate space
It space can be with isolated operation or flushing.
The slurry filter 2 can be used with two or two more parallels, water purification yield can be improved at this time, but need
The flow for wanting the slurries to pump is big, pressure head is small.It can also be used in series, water purification yield can be improved at this time, but need the slurry
The flow of liquid pump is small, pressure head is big.Concrete mode should be determines according to actual conditions.The slurries in the utility model are shown in Fig. 2
The schematic diagram of another embodiment of filter device 2.As shown in Fig. 2, in the slurry filter 2, the first chamber
11 are divided into the first branch chamber 11a and the second branch chamber 11b, and the injection point 8 is set to the first branch chamber 11a
At corresponding end socket, the serum outlet 9 is arranged at end socket corresponding to the second branch chamber 11b, such situation
It is that two slurry filters join end to end and oppositely positioned series system.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Fig. 3.As shown in figure 3, with
Unlike Fig. 1 illustrated embodiment, the junction of the injection point 8 and the serum recycle return was provided with
Strainer 16.The purpose that the filter screen 16 is arranged is that primary filtration can be carried out to desulfurization slurry, the desulfurization slurry after primary filtration
Liquid enters back into the slurry filter 2, to reduce blocking.
Fig. 4 A and Fig. 4 B are the schematic diagrames of an example of strainer setting, and wherein Fig. 4 A is longitudinal sectional drawing, and Fig. 4 B is horizontal
To sectional view.The filter screen 16 is located at the stream that desulfurization slurry is flowed to the spray equipment in the serum recycle return
Within the scope of line.In this way, not over filter screen coarse granule or dirt can in time by along the serum recycle return to
The problems such as desulfurization slurry that the spray equipment 4 flows is rinsed and taken away, generation and filter net jam to reduce filter cake, raising
Its operational reliability reduces maintenance.In order to reduce to the filter screen 16 wash away and to desulfurization slurry flowing influence, it is excellent
It selects the filter screen 16 and the inner wall of the serum recycle return is substantially concordant.If the excessive recessed slurries follow
Ring inner wall of the pipe is even into in the pipeline for flowing to slurry filter 2, it will leaves in the serum recycle return
Slurries flow to the flow range of the spray equipment 4, then cannot be rushed in time not over the coarse granule of filter screen or dirt
It brushes and takes away, or even form the filter cake being attached on filter screen 16, it will influence the working efficiency of the filter screen, increase maintenance
Amount.If protruding the inner wall of the serum recycle return too much, it will increase washing away to the strainer 16, reduction makes
Use the service life.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Fig. 5.As shown in figure 5, with
Unlike Fig. 3 illustrated embodiment, the injection point 8 is equipped with the loop-coupled connecting pipe of the serum recycle
Second slurries pump 3-1.Since the slurry flow in desulfurizing tower circulation loop is more much larger than the slurry flow in slurry filter,
The two is not in the same horizontal line.It is not if specially changing the specification or quantity of the first slurries pump for slurry filter
Economical.Therefore, 3-1 is pumped by increasing by the second slurries, the stream into the desulfurization slurry of the slurry filter 2 can be increased
Dynamic power, improves filter efficiency and operation stability, and reduces the fortune of the pump of the first slurries on the serum recycle return 3
The influence that market condition runs the slurry filter 2.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Fig. 6.As shown in fig. 6, with
Unlike Fig. 5 illustrated embodiment, in the filter screen 16 to the serum recycle circuit between the spray equipment 4
Slurries cooling device 17 is in series on pipeline.Cooling drop can be carried out to desulfurization slurry by the slurries cooling device 17 in this way
Temperature, and then flue gas is cooled down and dehumidified.The slurries cooling device 17 can be plate heat exchanger or pipe type heat transfer
Device.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Fig. 7.As shown in fig. 7, In
On the basis of Fig. 6 illustrated embodiment, the slurries cooling device 17 is used into integral structure with the filter screen 16.I.e.
The slurries cooling device 17 further includes slurries input leading portion (a part for also belonging to serum recycle circuit), the slurries input
The filter screen 16 is set on leading portion.This spline structure is simpler, easy for construction.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Fig. 8-1 and Fig. 8-2.Such as figure
Shown in 8-1, on the basis of embodiment shown in Fig. 5, the serum outlet 9 of the slurry filter 2 by pipeline with
The spray equipment 4 connects.Certainly, as shown in Fig. 8-2, the serum outlet 9 of the slurry filter 2 can also pass through
Pipeline enters the spray equipment 4 after being incorporated to the serum recycle return.Such benefit is filtered by the slurries
The desulfurization slurry of device 2, which enters the spray equipment 4, can be improved desulfuration efficiency.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Fig. 9.As shown in figure 9, In
On the basis of Fig. 8-2 illustrated embodiment, 1 upper space of desulfurizing tower is provided with demister 14, and the demister 14 is equipped with
Flusher 15.The filtrate (liquid 10 is directly or indirectly connect with the flusher 15 of the demister 14.It in this way can be with
It goes to rinse the demister 14 using the filtrate filtered out from desulfurization slurry, to displace process water, reduce described in entering
The new water of desulfurizing tower 1 to solve the problems, such as the water balance of desulphurization system, while can conserve water.Certainly, go out in the filtrate
It can be with series buffer water tank and/or force (forcing) pump (not shown), to improve system between mouth 10 and the flusher 15
Reliability.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Figure 10.As shown in Figure 10,
The flue gas desulfurization device includes desulfurizing tower 1, slurry filter 2 and the first slurries pump 3.
Spray equipment 4 is provided in the desulfurizing tower, the desulfurization tower bottom is provided with slurry pool 5, and the slurry pool 5 is logical
Piping is connect with the first slurries pump 3, and the first slurries pump 3 is connect by pipeline with the spray equipment 4, is formed slurries and is followed
Loop back path.
The slurry filter 2 includes shell 6, filter assemblies 7, injection point 8, serum outlet 9 and filtrate (liquid 10.
The shell 6 includes body part 6a, the first end socket 6b and the second end socket 6c.
The filter assemblies 7 include more screen pipe 7a, the first tube sheet 7b and the second tube sheet 7c.The more screen pipe 7a
Along the radial parallel setting of the shell 6, multiple filter openings are provided on the tube wall of the screen pipe 7a, the filter opening aperture is
0.01-50 microns, the screen pipe 7a length is 20-300cm.The first tube sheet 7b is set to the body part of the shell 6
Divide the junction of 6a and the first end socket 6b, the second tube sheet 7c is set to the body part 6a and the second end socket of the shell 6
The junction of 6c, the first tube sheet 7b and the second tube sheet 7c are equipped with through-hole；One end of the screen pipe 7a passes inside or through
The through-hole of the first tube sheet 7b, the other end pass inside or through the through-hole of the second tube sheet 7c；One end of the screen pipe 7a
Portion's opening is connected with the first end socket 6b and the first tube sheet 7b first chamber 11 constituted, and the other end of the screen pipe 7a is opened
Mouth is connected with the second end socket 6c and the second tube sheet 7c second chamber 12 constituted；The body part 6a of the shell 6, first
Tube sheet 7b, the second tube sheet 7c and screen pipe 7a constitute the filtrate space in the space that the periphery of the screen pipe 7a is formed
13。
The injection point 8 is located on the first end socket 6b, and passes through the end of first chamber 11 and the screen pipe 7a
Portion's opening in communication, the serum outlet 9 are located on the second end socket 6c, and pass through second chamber 12 and the screen pipe 7a
The other end opening in communication.The filtrate (liquid 10 is located on the side wall of the body part 6a of the shell 6, the filtrate
Space 13 is connected to the filtrate (liquid 10.Certainly, it can also be used the embodiment for the slurry filter 2 that Fig. 2 is shown, two
The slurry filter joins end to end and oppositely positioned series system.
The slurry pool 5 pumps 3-1 by pipeline and the second slurries and connect with the injection point 8 of the slurry filter 2,
The serum outlet 9 of the slurry filter 2 is connected by pipeline with the desulfurizing tower 1.The first end socket 6b and second
End socket 6c is also possible to connect a part of the pipeline of the slurry filter 2.
When using with (list) tower Two-way Cycle, the desulfurizing tower 1 is inside and outside to be equipped with the slurry pool 5, connects at this time
The mode of connecing can pump 3-1 and connect for the slurry pool 5 of the slurry pool 5 and/or outside inside the desulfurizing tower 1 and second slurries
It connects, second slurries pump 3-1 is connect with the injection point 8 of the slurry filter 2, and the serum outlet 9 can be with
It directly connect, can also be connect with the desulfurizing tower 1 by the slurry pool 5 and pipeline of the outside with the desulfurizing tower 1
(the i.e. described serum outlet 9 can be connect with the slurry pool 5 outside the desulfurizing tower 1, and by outside the desulfurizing tower 1
The serum recycle return that the slurry pool 5 is connected is connected to the desulfurizing tower 1 indirectly, is not shown in the figure)；Work as use
When double-column in series mode, connection type can be with are as follows: altogether there are two desulfurizing tower 1, each desulfurizing tower 1 be equipped with it is described according to
Secondary slurry pool interconnected 5, the first slurries pump 3, spray equipment 4, and constitute respective serum recycle circuit, the slurries mistake
The injection point 8 of filter device 2 can be connect with slurry pool 5 described in any one, and the serum outlet 9 can be with any one institute
Stating the connection of desulfurizing tower 1, (serum outlet can directly be connect with the desulfurizing tower, can also pass through the serum recycle circuit
Pipeline or other pipelines are connect with the desulfurizing tower).That is, into the slurry filter 2 desulfurization slurry from desulfurization
System flows back into desulphurization system after the screen pipe 7a again.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Figure 11.As shown in figure 11,
Unlike Figure 10 illustrated embodiment, the serum outlet 9 of the slurry filter 2 with it is described inside the desulfurizing tower
Spray equipment 4 connects.In such cases, the slurry filter 2 can be connected on the slurries of conventional wet lay desulphurization system
On circulation loop pipeline, system is simple.
Spray equipment can certainly be separately set.The another of the utility model flue gas desulfurization device is shown in Figure 11-1
The schematic diagram of embodiment.As shown in Figure 11-1, unlike Figure 11 illustrated embodiment, separately it is arranged in the desulfurizing tower 1
There is a special first spray equipment 4-1, described the inside the serum outlet 9 of the slurry filter 2 and the desulfurizing tower 1
One spray equipment 4-1 connection.The first spray equipment 4-1 can according to the flow and pressure of the slurry filter 2 come
Design, spraying effect are more preferable.
A kind of arrangement signal of nozzle in the desulfurizing tower of the utility model flue gas desulfurization device is shown in Figure 11-2
Figure.As shown in Figure 11-2, the first spray equipment 4-1 is made of multiple along the desulfurization inner wall of tower nozzle 16 that is circular layout.
Another arrangement signal of nozzle in the desulfurizing tower of the utility model flue gas desulfurization device is shown in Figure 11-3
Figure.As shown in Figure 11-3, the spray centerline of multiple nozzle 4-1 is formed in the desulfurizing tower 1 and constitutes the circle of contact.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Figure 12.As shown in figure 12,
Unlike Figure 11 illustrated embodiment, 1 upper space of desulfurizing tower is provided with demister 14, and the demister 14 is equipped with
Flusher 15.The filtrate (liquid 10 is directly or indirectly connect with the flusher 15 of the demister 14.It in this way can be with
It goes to rinse the demister 14 using the filtrate filtered out from desulfurization slurry, to displace process water, reduce described in entering
The new water of desulfurizing tower 1.Certainly, between the filtrate (liquid 10 and the flusher 15 can with series buffer water tank and/or
Force (forcing) pump, to improve the reliability of system.
The schematic diagram of another embodiment of the utility model flue gas desulfurization device is shown in Figure 13.As shown in figure 13,
Unlike Figure 12 illustrated embodiment, it is connect in the slurry pool 5 with the injection point 8 of the slurry filter 2
On pipeline or on pipeline that the serum outlet 9 of the slurry filter 2 is connected with the desulfurizing tower 1, series connection is equipped with slurries
Cooling device 17.The slurries cooling device 17 can be played flue gas cool-down and be removed by cooling desulfurization slurry cooled flue gas
Wet effect.It can be using the slurry filter 2 and 17 integral structure of slurries cooling device.Certainly, the slurries
Can also connect on pipeline interconnected the slurries cooling device between pond 5 and slurries pump 3 and the spray equipment 4
17 (not shown)s.
The serum outlet 9 of the slurry filter 2 can connect cyclone or belt dewaterer, can under this mode
The slurry filter 2 to be connected on to the plasma discharge pump discharge of conventional desulfurization system.
The entrance of second slurries pump 3-1 can connect cyclone or belt dewaterer or buffer tank, this mode
Under, the desulfurization slurry into the injection point 8 of the slurry filter 2 has been subjected to certain separation of solid and liquid, solid particulate matter
Content is declined, and is filtered processing to desulfurization wastewater, as such situation.
It will be appreciated by those skilled in the art that although the utility model is described in the way of multiple embodiments
, but not each embodiment only contains an independent technical solution.So narration is in specification just for the sake of clear
For the sake of, the skilled in the art should refer to the specification as a whole is understood, and by skill involved in each embodiment
Art scheme, which is regarded as, can be combined with each other into the modes of different embodiments to understand the protection scope of the utility model.
The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model
It encloses.Any those skilled in the art, under the premise of not departing from the conceptions and principles of the utility model made equivalent variations,
Modification and combination, should belong to the range of the utility model protection.
Claims (20)
1. a kind of flue gas desulfurization device, described including at least one desulfurizing tower, the first slurries pump and optional slurries cooling device
The spray equipment for spraying desulfurization slurry is provided in desulfurizing tower, the desulfurization tower bottom is provided with for storing desulfurization slurry
Slurry pool, it is optionally possible to be also provided with the slurry pool for storing desulfurization slurry outside desulfurizing tower, the slurry pool passes through the
One slurries pump is connected with spray equipment, which is characterized in that the flue gas desulfurization device further includes slurry filter；
The slurry filter includes shell, filter assemblies, injection point, serum outlet and filtrate (liquid；The filtering group
Part is located in the shell, and the filter assemblies include screen pipe；The injection point and serum outlet and the screen pipe
It is open-ended to be connected；Multiple filter openings are provided on the tube wall of the screen pipe, the screen pipe is one or more；The mistake
The periphery of chimney filter forms filtrate space, and the filtrate space is connected to the filtrate (liquid；
The injection point is connected with the arbitrary slurry pool, and the serum outlet is connected with the arbitrary desulfurizing tower
Logical, the filtrate (liquid is for exporting filtrate；
The optional slurries cooling device is arranged in series on the connecting pipeline of the slurry pool and the spray equipment, or
It is arranged in series on the pipeline that the serum outlet is connected to desulfurizing tower.
2. flue gas desulfurization device according to claim 1, which is characterized in that the slurry pool passes through pipeline and the first slurries
Pump connection, the first slurries pump are connect by pipeline with the spray equipment, and serum recycle circuit, the slurries filtering are formed
The injection point of device is connected by pipeline with the pipeline in the serum recycle circuit, the institute of the slurry filter
Serum outlet is stated to be connected by pipeline with desulfurizing tower；Optionally, the injection point and the loop-coupled company of the serum recycle
Adapter tube road is pumped equipped with the second slurries；Optionally, the junction of the injection point and the serum recycle return is arranged
There is filter screen；Optionally, it is in series on the filter screen to the serum recycle return between the spray equipment
The slurries cooling device.
3. flue gas desulfurization device according to claim 2, which is characterized in that the filter screen is located at the serum recycle and returns
Within the scope of the streamline that slurries in the pipeline of road are flowed to the spray equipment.
4. flue gas desulfurization device according to claim 3, which is characterized in that the slurries cooling device and the filter screen
Using integral structure.
5. flue gas desulfurization device according to claim 1, which is characterized in that the slurry pool passes through pipeline and the first slurries
Pump connection, the first slurries pump are connect by pipeline with the spray equipment, and serum recycle circuit is formed；The slurry pool is logical
Piping and the second slurries pump are connect with the injection point of the slurry filter, the serum outlet of the slurry filter
It is connected by pipeline with the desulfurizing tower；Optionally, it is connect in the slurry pool with the injection point of the slurry filter
Pipeline on or the pipeline that is connected with the desulfurizing tower of serum outlet of the slurry filter on, series connection is equipped with the slurry
Liquid cooling device；Optionally, on the pipeline that the slurry pool is connect with the injection point of the slurry filter or institute
State on the pipeline that the serum outlet of slurry filter is connected with the desulfurizing tower, series connection be equipped with cyclone or belt dewaterer or
Buffer tank.
6. according to claim 2,3 or 5 described in any item flue gas desulfurization devices, which is characterized in that the slurry filter
The serum outlet be connected with the pipeline in the serum recycle circuit by pipeline.
7. flue gas desulfurization device according to claim 1-5, which is characterized in that the slurry of the slurry filter
Liquid outlet is connect by pipeline with the spray equipment of the desulfurizing tower.
8. flue gas desulfurization device according to claim 7, which is characterized in that be separately provided with the first spray in the desulfurizing tower
The serum outlet of device, the slurry filter is connect by pipeline with first spray equipment of the desulfurizing tower.
9. flue gas desulfurization device according to claim 8, which is characterized in that first spray equipment is by multiple along described
The nozzle composition that desulfurization inner wall of tower is circular layout.
10. flue gas desulfurization device according to claim 9, which is characterized in that the spray centerline of multiple nozzles exists
The circle of contact is constituted in desulfurizing tower.
11. flue gas desulfurization device according to claim 1-5, which is characterized in that the desulfurizing tower upper space
Inside it is additionally provided with demister and/or deduster, and the flusher for rinsing the demister and/or deduster, the filter
Liquid outlet is directly or indirectly connected to the flusher.
12. flue gas desulfurization device according to claim 11, which is characterized in that filled in the filtrate (liquid and the flushing
Series connection is equipped with buffer tank and/or force (forcing) pump between setting.
13. flue gas desulfurization device according to claim 1-5, which is characterized in that the slurry filter
The filter assemblies further include the first tube sheet and the second tube sheet；First tube sheet and the second tube sheet are equipped with through-hole；The mistake
One end of chimney filter passes inside or through the through-hole of first tube sheet, and the other end passes inside or through the through-hole of second tube sheet；Institute
The one end opening for stating screen pipe is connected with the first chamber that shell and the first tube sheet are constituted, the other end of the screen pipe
The second chamber constituted with shell and the second tube sheet that is open is connected；The shell, the first tube sheet, the second tube sheet and screen pipe
The filtrate space is constituted in the space that the screen pipe periphery is formed.
14. flue gas desulfurization device according to claim 13, which is characterized in that the shell of the slurry filter
Including body part, the first end socket and the second end socket, the body part, the first end socket and the second end socket are integrally formed, or
Person is formed by separable assembled；
First tube sheet is set to the body part of the shell and the junction of the first end socket, and second tube sheet is set to
The junction of the body part of the shell and the second end socket；The one end opening of the screen pipe and the first end socket and the first pipe
The first chamber that plate is constituted is connected, and the second of the other end opening of the screen pipe and the second end socket and the second tube sheet composition
Chamber is connected；The body part of the shell, the first tube sheet, the second tube sheet and screen pipe are formed in the screen pipe periphery
Space constitute the filtrate space.
15. flue gas desulfurization device according to claim 14, which is characterized in that the injection point is located at first envelope
On head, the serum outlet is located on second end socket；Or the first chamber is divided into first branch's chamber and
Two branch's chambers, the injection point are set at end socket corresponding to first branch's chamber, and the serum outlet is arranged in institute
It states at end socket corresponding to second branch's chamber；
The filtrate (liquid is located on the side wall of the case body portion.
16. flue gas desulfurization device according to claim 13, which is characterized in that the filtrate space is divided into two or more
Mutually isolated branch's filtrate space, be respectively set on the side wall of the shell corresponding to each branch's filtrate space
There is filtrate (liquid.
17. flue gas desulfurization device according to claim 1-5, which is characterized in that on the tube wall of the screen pipe
The filter opening aperture of setting is 0.01-50 microns, and the filtering length of tube is 20-300cm.
18. flue gas desulfurization device according to claim 1-5, which is characterized in that the screen pipe is single tube mistake
Chimney filter or multitube screen pipe.
19. flue gas desulfurization device according to claim 1-5, which is characterized in that the filter assemblies use two
A or two more parallels are used in series.
20. flue gas desulfurization device according to claim 1-5, which is characterized in that the screen pipe is ceramic membrane
Screen pipe or metal filtration pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821999747.2U CN209596919U (en) | 2018-11-30 | 2018-11-30 | A kind of flue gas desulfurization device with slurries filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821999747.2U CN209596919U (en) | 2018-11-30 | 2018-11-30 | A kind of flue gas desulfurization device with slurries filtering function |
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| CN209596919U true CN209596919U (en) | 2019-11-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331639A (en) * | 2018-11-30 | 2019-02-15 | 北京兴晟科技有限公司 | A kind of flue gas desulfurization device with slurries filtering function |
| CN112844030A (en) * | 2020-12-29 | 2021-05-28 | 上海申欣环保实业有限公司 | Equipment and method for removing chlorine and sulfur from flue gas |
-
2018
- 2018-11-30 CN CN201821999747.2U patent/CN209596919U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331639A (en) * | 2018-11-30 | 2019-02-15 | 北京兴晟科技有限公司 | A kind of flue gas desulfurization device with slurries filtering function |
| CN112844030A (en) * | 2020-12-29 | 2021-05-28 | 上海申欣环保实业有限公司 | Equipment and method for removing chlorine and sulfur from flue gas |
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