CN207313210U - A kind of desulfurization wastewater pretreatment system - Google Patents
A kind of desulfurization wastewater pretreatment system Download PDFInfo
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- CN207313210U CN207313210U CN201721367439.3U CN201721367439U CN207313210U CN 207313210 U CN207313210 U CN 207313210U CN 201721367439 U CN201721367439 U CN 201721367439U CN 207313210 U CN207313210 U CN 207313210U
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- caisson
- desulfurization wastewater
- heat exchange
- exchange box
- exchanger tube
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Abstract
The utility model provides a kind of desulfurization wastewater pretreatment system, in the preposition heat exchange box of three header of desulfurization wastewater and pre- caisson, Double shaft stirring device and heat exchanger tube are provided with heat exchange box, cool down again to it after carrying out heating concentration to desulfurization wastewater using heat exchanger tube, pre- caisson water inlet is connected by heat exchange box water outlet to enter in pre- caisson, in pre- caisson after preliminary sedimentation, wastewater liquid compared with clarification is further processed by pre- caisson water outlet into three header of desulfurization wastewater, and the mud for being deposited in pre- caisson conical lower portion is handled by mud discharging mouth into slurry dewatering processing system, the control network of rivers is provided with pre- caisson water inlet.A kind of desulfurization wastewater pretreatment unit provided by the utility model, desulfurization wastewater is concentrated and cooled down using heat exchanger tube, and pre- caisson preliminary sedimentation desulfurization wastewater is set, add the desulfurization wastewater concentration into three headers, it ensure that the stabilization of flocculation basin system, reduce processing time, improve treatment effeciency.
Description
Technical field
Desulfurization wastewater processing technology field is the utility model is related to, more particularly to a kind of desulfurization wastewater pretreatment system.
Background technology
Thermoelectricity is always in China's energy resource structure as a kind of technology maturation, reliable, cost economy generation technology
Important component.And with the continuous social and economic development, power of the country pair with atmospheric environment protection and water environment protection
Degree is gradually deepened, and the large scale industry SO 2 from fume discharge standard such as coal-burning power plant requires further stringent.In practical operation, stone
Lime stone-gypsum wet flue gas desulfurizing technique is the means of flue gas desulfurization of power plant technology being most widely used at present, in wet process of FGD
In system operation, as desulfurization slurry repeatedly circulates and contact flue gas, chlorion is constantly enriched with desulfurization slurry, concentration
Gradually rise, when the chlorine ion concentration enrichment in desulfurization slurry reaches 20g/L, in order to avoid corrosion, desulfurization slurry must be continuous
Desulphurization system is discharged away from, and fresh slurry is supplemented to desulphurization system.These are discharged the slurries for leaving desulphurization system, through removing
The water discharged after desulfurated plaster therein is known as desulfurization wastewater.Contain substantial amounts of calcium ion, sulfate ion in desulfurization wastewater
And chlorion, have the characteristics that acid big, heavy metal particles and suspension content are high, it is necessary to by complicated chemical treatment ability
Discharge.
Desulfurization wastewater treatment technology is broadly divided into evaporative crystallization and goes out salt technology and heat smoke evaporation technique at present, most at present
Power plant all uses the processing equipment of " three headers+clarification concentration basin " substantially, is adjusted desulfurization wastewater pH to 9- by lime treatment
10, and part heavy metal is formed hydroxide precipitation hard to tolerate, add the weight that organic sulfur makes part to be precipitated with hydroxide
Metal forms insoluble compound with organic sulfur, is precipitated out in solid form, is then acted on and is removed in waste water by coagulation clarification
Suspended matter and sediment, the mud formed in processing procedure transports outward after being carried out dehydrating by plate and frame type filter-press.
In the processing procedure of desulfurization wastewater, temperature is higher when waste water water is discharged from desulphurization system, is directly entered wadding
Solidifying Chi Houhui causes the bad stability of system during flocculation, makes precipitation be not easy to carry out, while to be treated heavy in waste water water
The content of the materials such as metal ion, suspended matter is relatively low, and settling velocity is slow, extends the wastewater treatment time, reduces processing effect
Rate.
Utility model content
To solve the problems, such as in existing desulfurization wastewater processing procedure mentioned above that waste water comes that coolant-temperature gage is high, concentration is low, this
Utility model provides a kind of desulfurization wastewater pretreatment system, including three header of heat exchange box, pre- caisson and desulfurization wastewater；The heat exchange
Box top is provided with heat exchange box water inlet and steam (vapor) outlet, and the heat exchange box water inlet connection desulfurization wastewater carrys out waterpipe；It is described
Heat exchange box lower sidewall is provided with heat exchange box water outlet；Double shaft stirring device and heat exchanger tube are provided with the heat exchange box；It is described
Heat exchanger tube is arranged in the heat exchange box, and the heat exchanger tube is equipped with heat transferring medium entrance and heat transferring medium exports；The pre- caisson
Side wall is provided with pre- caisson water inlet, and the pre- caisson water inlet is connected with the heat exchange box water outlet；The pre- caisson enters water
Mouth is provided with the control network of rivers, and the control network of rivers is fine and closely woven net structure；The pre- caisson water outlet of the pre- caisson and the desulfurization
Three header of waste water connects；Taper is in the bottom of the pre- caisson and is equipped with mud discharging mouth, the mud discharging mouth and slurry dewatering processing system
System connection.
Further, the Double shaft stirring device includes upper mixing component and lower mixing component, the upper mixing component bag
Include agitating shaft and be arranged on the ribbon impeller of shaft bottom, the lower mixing component includes lower agitating shaft and setting
Turbine type agitating paddle at the top of lower agitating shaft.
Further, heat transferring medium entrance and the heat transferring medium outlet is connected with medium switching valve, the medium switching
Valve is connected with fume pipe and industrial water pipe.
Further, the heat exchanger tube is in the shape of a spiral.
Further, the heat exchanger tube is arranged on the heat exchange chamber interior wall by connecting rod.
Further, the steam (vapor) outlet is connected with Steam heating systems.
Further, it is provided with the outside of the heat exchange box water inlet, steam (vapor) outlet, pre- caisson water outlet, mud discharging mouth
Valve, valve is provided between the heat exchange box water outlet and pre- caisson water inlet.
A kind of desulfurization wastewater pretreatment system provided by the utility model, in the preposition heat exchange box of three header of desulfurization wastewater and in advance
Caisson, Double shaft stirring device and heat exchanger tube are provided with heat exchange box, and desulfurization wastewater water passes through heat exchange box water inlet and enters heat exchange
When in case, cooling processing is carried out to it again after heating concentration is carried out to it using heat exchanger tube, then connect by heat exchange box water outlet
Pre- caisson water inlet enters in pre- caisson, and in pre- caisson after preliminary sedimentation, the wastewater liquid of relatively clarification passes through pre- caisson water outlet
Mouthful be further processed into three header of desulfurization wastewater, and be deposited in the mud of pre- caisson conical lower portion by mud discharging mouth into
Enter slurry dewatering processing system to be handled, the control network of rivers set on pre- caisson water inlet can effectively control the stream into water
Speed, avoids because flow velocity crosses the precipitation process inside havoc preliminary sedimentation case.A kind of desulfurization wastewater pretreatment provided by the utility model
Device, is concentrated and is cooled down to desulfurization wastewater using heat exchanger tube, and sets pre- caisson preliminary sedimentation desulfurization wastewater, add into
Enter the content of the materials such as the heavy metal of the desulfurization wastewater of three headers, ensure that the stabilization of flocculation basin system, reduce processing time,
Improve treatment effeciency.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of cross-sectional view of desulfurization wastewater pretreatment system provided by the utility model；
Fig. 2 is the cross-sectional view of heat exchange box in Fig. 1.
Reference numeral：
10 heat exchange box, 20 pre- 30 desulfurization wastewater of caisson, three header
Mixing component on 11 heat exchange box water inlet, 12 heat exchange box water outlet 13
14 times 15 heat exchanger tube of mixing component, 151 heat transferring medium entrances
152 heat transferring mediums export 16 steam (vapor) outlet, 21 pre- caisson water inlet
22 pre- caisson water outlets 211 control 23 mud discharging mouth of the network of rivers
132 ribbon impeller of agitating shaft, 141 times agitating shafts on 131
142 turbine type agitating paddle, 40 medium switching valve, 41 fume pipe
42 50 slurry dewatering processing system of industrial water pipe, 60 Steam heating systems.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to
The scope of the utility model protection.
, it is necessary to explanation in the description of the utility model, term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the utility model.In addition, term " first ", " second " be only used for description purpose, and it is not intended that instruction or
Imply relative importance.
Fig. 1 is a kind of cross-sectional view of desulfurization wastewater pretreatment system provided by the utility model, such as Fig. 1 institutes
Show, including three header 30 of heat exchange box 10, pre- caisson 20 and desulfurization wastewater；
The top of heat exchange box 10 is provided with heat exchange box water inlet 11 and steam (vapor) outlet 16, and the heat exchange box water inlet 11 connects
Connect desulfurization wastewater and carry out waterpipe；10 lower sidewall of heat exchange box is provided with heat exchange box water outlet 12；Set in the heat exchange box 10
It is equipped with Double shaft stirring device and heat exchanger tube 15；The heat exchanger tube 15 is arranged in the heat exchange box 10, and the heat exchanger tube 15 is equipped with
Heat transferring medium entrance 151 and heat transferring medium outlet 152；
20 side wall of pre- caisson is provided with pre- caisson water inlet 21, and the pre- caisson water inlet 21 goes out with the heat exchange box
The mouth of a river 12 connects；The pre- caisson water inlet 21 is provided with the control network of rivers 211, and the control network of rivers 211 is fine and closely woven net structure；Institute
The pre- caisson water outlet 22 for stating pre- caisson 20 is connected with three header 30 of desulfurization wastewater；The bottom of the pre- caisson 20 is taper
And mud discharging mouth 23 is equipped with, the mud discharging mouth 23 is connected with slurry dewatering processing system 50.
When it is implemented, as depicted in figs. 1 and 2, heat exchange box 10 and pre- caisson are set before three header 30 of desulfurization wastewater
20, the top of heat exchange box 10 is provided with heat exchange box water inlet 11, and desulfurization wastewater water enters through piping from heat exchange box water inlet 11
In heat exchange box 10,10 lower sidewall of heat exchange box is provided with heat exchange box water outlet 12, when desulfurization wastewater is handled by heat exchange box 10
Afterwards, pre- caisson water inlet 21 is flowed out to from heat exchange box water outlet 12 through piping.
As shown in Figure 1, pre- caisson water inlet 21 is arranged on pre- 20 side wall of caisson, the level height of pre- caisson water inlet 21
Lower than heat exchange box water outlet 12, treated desulfurization wastewater can the outflow out of heat exchange box 10 automatically.In pre- caisson water inlet
21 places contacted with pre- 20 wall body of caisson are provided with the control network of rivers 211, and the control network of rivers is fine and closely woven net structure, and current are subject to control water
The stop of net 211, reduced velocity flow, avoids causing larger disturbance to the precipitation system in pre- caisson 20.Pre- caisson water outlet 22
Be arranged on pre- 20 side wall of caisson, and be connected with three header 30 of desulfurization wastewater by pipeline, will by preliminary sedimentation desulfurization wastewater compared with
Fining end is distributed into three header 30 of desulfurization wastewater and is handled.
As shown in Figure 1, the bottom of pre- caisson 20 is taper, it can concentrate the impurity such as the suspended matter in desulfurization wastewater heavy
Form sediment, be additionally provided with mud discharging mouth 23 in the conical lower portion of pre- caisson 20, mud discharging mouth 23 passes through pipeline and slurry dewatering processing system 50
Connection, when the mud impurity arrival in pre- caisson 20 is a certain amount of, is handled slurry transportation to slurry dewatering by mud discharging mouth 23
Handled in system 50.
As depicted in figs. 1 and 2, Double shaft stirring device and heat exchanger tube 15, Double shaft stirring device are provided with heat exchange box 10
The desulfurization wastewater that can quickly, strongly exchange in hot tank 10 carries out agitation mixing, the heat exchange efficiency of heat exchanger tube 15 is carried significantly
Rise, accelerate the cooling and concentration of desulfurization wastewater in heat exchange box 10.Heat exchanger tube 15 is connected with heat transferring medium entrance 151 and heat transferring medium
Outlet 152, by the circulation of heat transferring medium, makes the desulfurization wastewater in heat exchange box 10 cool off and concentrate.In use, in twin shaft
In the case that agitating device stirs, high temperature heat transferring medium is first imported, makes the moist part evaporation of the desulfurization wastewater in heat exchange box 10,
Steam is discharged by the steam (vapor) outlet 16 for being arranged on the top of heat exchange box 10, concentrates desulfurization wastewater, after being concentrated into a certain degree,
Low-temperature heat exchange medium is imported, the desulfurization wastewater in heat exchange box 10 is cooled, preliminary sedimentation is being flowed into by heat exchange box water outlet 12
In case 20.
A kind of desulfurization wastewater pretreatment unit provided by the utility model, desulfurization wastewater is concentrated using heat exchanger tube and
Cooling, and sets pre- caisson preliminary sedimentation desulfurization wastewater, adds the materials such as the heavy metal of desulfurization wastewater into three headers
Content, ensure that the stabilization of flocculation basin system, reduces processing time, improve treatment effeciency.
Preferably, the Double shaft stirring device includes upper mixing component 13 and lower mixing component 14, the upper mixing component
13 include upper agitating shaft 131 and the ribbon impeller 132 for being arranged on 131 bottom of agitating shaft, and the lower mixing component 14 wraps
Include lower agitating shaft 141 and the turbine type agitating paddle 142 for being arranged on the lower top of agitating shaft 141.
When it is implemented, such as, shown in 1, Double shaft stirring device includes upper mixing component 13 and lower mixing component 14, such as Fig. 2
Shown, upper mixing component 13 includes upper agitating shaft 131 and ribbon impeller 132, and lower mixing component 14 includes lower agitating shaft 141
With turbine type agitating paddle 142, stirring motor 133 is also respectively connected on upper mixing component 13 and lower mixing component 14 with
Stirring motor 143.In use, upper mixing component 13 rotates in different directions with lower mixing component 14, heat exchange box 10 can be made
Interior desulfurization wastewater forms violent turbulent flow, can hugely improve the heat transfer effect of heat exchanger tube 15.
Preferably, heat transferring medium entrance 151 and the heat transferring medium outlet 152 is connected with medium switching valve 40, is given an account of
Matter switching valve 40 is connected with fume pipe 41 and industrial water pipe 42.
When it is implemented, as shown in Fig. 2, it is connected with Jie in the outside of heat transferring medium entrance 151 and heat transferring medium outlet 152
Matter switching valve 40, is connected with fume pipe 41 and industrial water pipe 42 in the opposite side of medium switching valve 40, passes through medium switching valve 40
Connection fume pipe 41 or industrial water pipe 42 can be switched.When heat exchange box 10 works and exchanges heat, first by upper and lower two medium switching valves
40 all switch to connection fume pipe 41, and the high-temperature flue gas in fume pipe 41 enters heat exchanger tube 15, and the desulfurization in exchange hot tank 10 is given up
Water is heated, and evaporates moist part, and when desulfurization wastewater is concentrated into a certain degree, medium switching valve 40 is switched to connection
Industrial water pipe 42, the industry water in industrial water pipe 42 enter heat exchanger tube 15, and the desulfurization wastewater exchanged in hot tank 10 cools down, when
When desulfurization wastewater temperature is down to room temperature, heat exchange box water outlet 12 is opened, desulfurization wastewater is entered in pre- caisson 20.
Preferably, the heat exchanger tube 15 is in the shape of a spiral.
When it is implemented, as depicted in figs. 1 and 2, heat exchanger tube 15 is arranged to helical form under equal conditions to increase
The contact area of heat exchanger tube and desulfurization wastewater, improves heat exchange efficiency.
Preferably, the heat exchanger tube 15 is arranged on 10 inner wall of heat exchange box by connecting rod.
When it is implemented, the not direct inner wall with heat exchange box 10 of heat exchanger tube 15 contacts, but the company of setting on heat exchanger tube 15
Extension bar, encourages heat exchanger tube 15 by connecting rod and is fixed on heat exchange box 10, can be stirred to avoid the desulfurization wastewater in heat exchange box 10
When, the granule foreign such as suspended matter in desulfurization wastewater is gathered in the junction surface of heat exchanger tube 15 and 10 inner wall of heat exchange box, while also may be used
To increase the contact area of heat exchanger tube 15 and desulfurization wastewater, heat exchange efficiency is improved.
Preferably, the steam (vapor) outlet 16 is connected with Steam heating systems 60.
When it is implemented, as depicted in figs. 1 and 2, steam when desulfurization wastewater concentrates is sent to steam from steam (vapor) outlet 16
Processing system 60, is further processed it by Steam heating systems 60.
Preferably, the heat exchange box water inlet 11, steam (vapor) outlet 16, pre- caisson water outlet 22, mud discharging mouth 23 outside
Valve is provided with, valve is provided between the heat exchange box water outlet 12 and pre- caisson water inlet 21.
When it is implemented, it is controlled using the switch of outlet of the valve to each pipeline and entrance.
Although herein it is more used such as heat exchange box, pre- caisson, three header of desulfurization wastewater, heat exchange box water outlet,
Heat exchange box water inlet, mixing component, heat exchanger tube, heat transferring medium entrance, heat transferring medium outlet, steam (vapor) outlet, pre- caisson water inlet,
Pre- caisson water outlet, the control network of rivers, mud discharging mouth, agitating shaft, ribbon impeller, turbine type agitating paddle, medium switching valve, flue gas
The terms such as pipe, industrial water pipe, slurry dewatering processing system, Steam heating systems, but it is not precluded from the possibility using other terms
Property.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；It is construed as any
A kind of additional limitation is all contrary to the spirit of the present invention.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify the technical solution described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical solution of type.
Claims (7)
- A kind of 1. desulfurization wastewater pretreatment system, it is characterised in that：Including heat exchange box (10), pre- caisson (20) and desulfurization wastewater three Header (30)；Heat exchange box water inlet (11) and steam (vapor) outlet (16), the heat exchange box water inlet are provided with the top of the heat exchange box (10) (11) connection desulfurization wastewater carrys out waterpipe；Heat exchange box (10) lower sidewall is provided with heat exchange box water outlet (12)；It is described to change Double shaft stirring device and heat exchanger tube (15) are provided with hot tank (10)；The heat exchanger tube (15) is arranged on the heat exchange box (10) Interior, the heat exchanger tube (15) is equipped with heat transferring medium entrance (151) and heat transferring medium outlet (152)；Pre- caisson (20) side wall is provided with pre- caisson water inlet (21), the pre- caisson water inlet (21) and the heat exchange box Water outlet (12) connects；The pre- caisson water inlet (21) is provided with the control network of rivers (211), and the control network of rivers (211) is fine and closely woven Net structure；The pre- caisson water outlet (22) of the pre- caisson (20) is connected with three header of desulfurization wastewater (30)；It is described pre- Taper is in the bottom of caisson (20) and is equipped with mud discharging mouth (23), and the mud discharging mouth (23) connects with slurry dewatering processing system (50) Connect.
- A kind of 2. desulfurization wastewater pretreatment system according to claim 1, it is characterised in that：The Double shaft stirring device bag Mixing component (13) and lower mixing component (14) are included, the upper mixing component (13) includes upper agitating shaft (131) and is arranged on The ribbon impeller (132) of upper agitating shaft (131) bottom, the lower mixing component (14) include lower agitating shaft (141) and set Put the turbine type agitating paddle (142) at the top of lower agitating shaft (141).
- A kind of 3. desulfurization wastewater pretreatment system according to claim 1, it is characterised in that：The heat transferring medium entrance (151) and heat transferring medium outlet (152) is connected with medium switching valve (40), and the medium switching valve (40) is connected with fume pipe (41) and industrial water pipe (42).
- A kind of 4. desulfurization wastewater pretreatment system according to claim 1, it is characterised in that：The heat exchanger tube (15) is in spiral shell Revolve shape.
- A kind of 5. desulfurization wastewater pretreatment system according to claim 4, it is characterised in that：The heat exchanger tube (15) passes through Connecting rod is arranged on the heat exchange box (10) inner wall.
- A kind of 6. desulfurization wastewater pretreatment system according to claim 1, it is characterised in that：The steam (vapor) outlet (16) with Steam heating systems (60) connect.
- 7. according to a kind of desulfurization wastewater pretreatment system of claim 1-6 any one of them, it is characterised in that：In the heat exchange Case water inlet (11), steam (vapor) outlet (16), pre- caisson water outlet (22), mud discharging mouth are provided with valve on the outside of (23), described to change Valve is provided between hot tank water outlet (12) and pre- caisson water inlet (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721367439.3U CN207313210U (en) | 2017-10-23 | 2017-10-23 | A kind of desulfurization wastewater pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721367439.3U CN207313210U (en) | 2017-10-23 | 2017-10-23 | A kind of desulfurization wastewater pretreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207313210U true CN207313210U (en) | 2018-05-04 |
Family
ID=62382236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721367439.3U Expired - Fee Related CN207313210U (en) | 2017-10-23 | 2017-10-23 | A kind of desulfurization wastewater pretreatment system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207313210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108926875A (en) * | 2018-05-25 | 2018-12-04 | 湖北省联投生物科技股份有限公司 | A kind of quick sinking cooling device of tyrosine processing |
-
2017
- 2017-10-23 CN CN201721367439.3U patent/CN207313210U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108926875A (en) * | 2018-05-25 | 2018-12-04 | 湖北省联投生物科技股份有限公司 | A kind of quick sinking cooling device of tyrosine processing |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20201023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |