CN206109116U - System for handle coal gasification buck - Google Patents
System for handle coal gasification buck Download PDFInfo
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- CN206109116U CN206109116U CN201621100510.7U CN201621100510U CN206109116U CN 206109116 U CN206109116 U CN 206109116U CN 201621100510 U CN201621100510 U CN 201621100510U CN 206109116 U CN206109116 U CN 206109116U
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- 238000002309 gasification Methods 0.000 title abstract description 51
- 239000003245 coal Substances 0.000 title abstract description 41
- 238000003487 electrochemical reaction Methods 0.000 claims abstract description 69
- 238000005189 flocculation Methods 0.000 claims abstract description 24
- 230000016615 flocculation Effects 0.000 claims abstract description 24
- 238000004062 sedimentation Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 91
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 46
- 238000006243 chemical reaction Methods 0.000 claims description 34
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 19
- 239000003513 alkali Substances 0.000 claims description 18
- 239000001569 carbon dioxide Substances 0.000 claims description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 14
- 238000004380 ashing Methods 0.000 claims description 12
- 238000005261 decarburization Methods 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 8
- 230000023556 desulfurization Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 7
- 230000005518 electrochemistry Effects 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 42
- 230000008569 process Effects 0.000 description 26
- 238000010521 absorption reaction Methods 0.000 description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 238000001556 precipitation Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 12
- 229910001424 calcium ion Inorganic materials 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 11
- 239000010797 grey water Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 239000010865 sewage Substances 0.000 description 10
- 239000003643 water by type Substances 0.000 description 10
- 238000005273 aeration Methods 0.000 description 9
- 230000005684 electric field Effects 0.000 description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000011575 calcium Substances 0.000 description 8
- 229910052791 calcium Inorganic materials 0.000 description 8
- 239000003292 glue Substances 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 229910052749 magnesium Inorganic materials 0.000 description 8
- 229910001425 magnesium ion Inorganic materials 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 238000004581 coalescence Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 4
- 238000013459 approach Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000003908 quality control method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- -1 float Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Abstract
The utility model provides a system for handle coal gasification buck, the system includes electrochemical reaction district and settling zone, wherein, placed electric flocculation reactor in the electrochemical reaction district, the sedimentation tank district has arranged swash plate and rotating equipment, the exit linkage settling zone entry in electrochemical reaction district. The utility model discloses a system mainly solves hardness, turbidity, suspended solid scheduling problem in the coal gasification buck, has thoroughly solved system's scale deposit problem that the high rigidity was brought in the coal gasification buck. The system provided by the utility model wastewater discharge is few, environment friendly, economically feasible.
Description
Technical field
This utility model is related to Coal Gasification Technology field, more particularly to a kind of system of gas treatment ashing water.
Background technology
New Coal Chemical is a highly water intensive industry, and this problem is also into the bottleneck problem of restriction Development of Coal Chemical Industry.
After new environmental law is implemented, while pursuing economic benefit, taking into account environmental and social benefits will become a kind of normality, become one
The whether successful criterion of individual project.New Coal Chemical enterprise major part is distributed in western ground of the coal resource storage compared with horn of plenty
Area, while ecology is more fragile, environmental contaminants capacity is little, while water resource is more deficient in these areas.Therefore, section is carried out
, can economize on water, reduce discharging the matter of utmost importance for becoming pendulum in coal chemical industry enterprises.
Tradition remove the method for the turbidity in buck and float be by the addition flocculant and dispersant toward system, it is right
Environmental effect is than larger.
Also, with powdered coal pressuring gasified and advanced Coal Gasification Technology of the coal water slurry gasification technology as representative, still cannot put
The scaling problem brought due to high rigidity in buck is taken off, the maintenance and operation of manufacturing enterprise is so largely increased
Pressure.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of system of gas treatment ashing water,
System of the present utility model efficiently removes hardness, turbidity, float in coal gasification buck, solution using the principle of electrochemistry flocculation
Coal gasification wastewater discharge capacity of having determined is big, the problem of scaling.
This utility model is achieved through the following technical solutions：
A kind of system of gas treatment ashing water, the system includes electrochemical reaction area and settling zone；
Wherein, electric flocculation reactor is placed with electrochemical reaction area, sedimentation tank area is disposed with swash plate and rotating machinery；Electricity
The outlet connection settling zone entrance of chemical reaction zone.
Further, the system also includes following arbitrary or its combination in any：
A) sodium carbonate liquor tank, sodium carbonate liquor pipeline and dosing pump；
B) converter unit, conversion condensed fluid pipeline and dosing pump；Or
C) desulfurization and decarburization unit, carbon dioxide gass fluid line and flow control valve.
Further, the system also includes buck surge tank, and electrochemical reaction area top is provided with overflow launder, overflow launder
It is connected with buck surge tank by pipeline.
Further, the electric flocculation reactor adopts ferroalloy materials or aluminum alloy materials as electrode.
Further, the system also includes alkali tank, wherein the alkali tank is connected to electrochemical reaction area by dosing pump.
Further, the system also includes sour tank, wherein the sour tank is connected to overflow launder or overflows by dosing pump
Pipeline between chute and buck surge tank.
Further, the system also includes vacuum filtering system and slush pump, wherein, the settling zone outlet passes through mud
Stock pump connects vacuum filtering system.
The operation principle of electrochemistry flocculation system described in the utility model is：
Place electric flocculation reactor in electrochemical reaction area, the electric flocculation reactor using metal iron alloy material or
Aluminum alloy materials, by powering up to pole plate and being passed through air, make pole plate electrolysis separate out Fe as electrode3+Or Al3+Into
In water, with OH-combination of dissolving in water Fe (OH) is generated3Or Al (OH)3And other monokaryon hydroxyl compounds, multinuclear hydroxyl
Coordination compound and polymer etc., the coordination compound of formation has extremely strong adsorptivity as a kind of efficient absorption group, recycles absorption
Build bridge and net is caught the impurity such as float, colloidal solid, macromolecule organic that volume is swept in effect absorption water and settled jointly.
Simultaneously using the pH value and basicity of regulating water quality, precipitate calcium ions and magnesium ions, concrete reaction equation is：
Ca2++OH-+HCO3 -→CaCO3+H2O；Mg2++2OH- Mg(OH)2；
Produced precipitate by efficient absorption group Adsorption, so as to realize efficiently reducing the turbidity in water, colourity,
The effect of the impurity such as float, colloid, Organic substance.
System of the present utility model is described in further detail below with reference to the accompanying drawings.
Coal gasification apparatus buck out is caused into electrochemical reaction area, electric flocculation reaction is placed in electrochemical reaction area
Device.Using ferroalloy materials or aluminum alloy materials as electrode, battery lead plate thin slice is arranged according to certain distance, the electricity per block
Pole plate is passed through unidirectional current, and adjacent two electrode plate is passed through electric current both positive and negative polarity conversely, and periodically exchanging both positive and negative polarity.Galvanic voltage
For 0～60V, preferably 10～40V.Current intensity is 1～40A, preferably 5～25A.
Preferably, factory air is passed through into electrochemical reaction area, it can promote Fe2+It is oxidized to Fe3+, so as to promote to generate
High activity adsorption group.It is highly preferred that precipitation is formed to prevent from being reacted on the electrode of electric flocculation reactor, factory is empty
Gas is passed through the middle and lower part in electrochemical reaction area.And flow control valve is set, air mass flow is adjusted as needed.
So that in the presence of electric field and aeration, high activity adsorption group is produced in electrochemical reaction area, in absorption water
The impurity such as colloid, float, form larger batting-unit structure and separate out from water.
Simultaneously by fine setting pH and basicity, the calcium ions and magnesium ions in water are made to precipitate and separate out, with active group coalescence.
To reduce the grey water hardness, magnesium ion in buck is set fully to react generation magnesium hydrate precipitate, this utility model is to ash
The pH of water is adjusted, and concrete grammar is that the sodium hydroxide solution Jing meterings in alkali tank are pumped into into electrochemical reaction area, is passed through
PH on-line analyses make outlet buck pH control between 9.0 to 10.5 controlling sodium hydroxide flow.
To reduce the grey water hardness, calcium ion in buck is set fully to react generation precipitation of calcium carbonate, this utility model also includes
Basicity adjusting means, for being adjusted to the carbonic acid of buck and bicarbonate basicity, specially basicity adjusting means includes following
Arbitrary or its combination in any：
1) sodium carbonate liquor tank, sodium carbonate liquor pipeline and dosing pump；
2) converter unit, conversion condensed fluid pipeline and dosing pump；
3) desulfurization and decarburization unit, carbon dioxide gass fluid line and flow control valve.
Wherein, precipitation is formed to prevent from being reacted on the electrode of electric flocculation reactor, the sodium carbonate liquor pipeline,
The outlet of conversion condensed fluid pipeline or carbon dioxide gass fluid line is positioned at the lower section of battery lead plate in reaction zone.
Above-mentioned basicity adjusting means can be by adding sodium carbonate liquor, conversion condensed fluid or carbon dioxide into reaction zone
Gas adjusting basicity, wherein, the sodium carbonate liquor comes from sodium carbonate liquor basin and controls flow by dosing pump, its
Addition be 0～5Kg/1t gasification ash waters, preferably 0.2～1.5Kg/1t gasification ash waters；The low pressure conversion condensed fluid may be from
In converter unit, and by dosing pump control flow, its addition be 0～260Kg/1t gasification ash waters, preferably 1～80Kg/1t
Gasification ash water；The carbon dioxide may be from the desulfurization and decarburization unit of coal gasification apparatus, and by flow control valve control
Flow processed, its addition is 0～15Nm3/ 1t gasification ash waters, preferably 1～5Nm3/ 1t gasification ash waters.
Buck after processing Jing electrochemical reaction area enters settling zone from reaction zone bottom, in settling zone, in order to increase
Effect of settling, the efficient swash plate of arranging multiplayer in sedimentation tank；In order to settle more it is uniform prevent from being blocked in sedimentation tank arrange
Rotating stirring device, so that the most of precipitation of floccule body Jing sedimentation tanks that the solid matter contained in buck and reaction are formed
Get off, obtain mud and clear water.The cone bottom of mud Jing settling zones is pumped to vacuum filtering system and is filtered by slurry, obtains
Buck after filtering residue and filter.Buck Jing after vacuum filtering system is filtered is reentered and processed in electrochemical reaction area.Heavy
The clear water that shallow lake area obtains is entered in overflow launder through downflow weir, is then sent into into buck surge tank by going out pipeline.
Preferably, also factory air can be passed through to the middle and upper part of settling zone to promote high activity group fully to flocculate, and set
Flow control valve is put, air mass flow is adjusted as needed.
In order that settling zone processes the clear water for obtaining and meets system reuse requirement, the system also includes sour tank, for adjusting
The pH of section clear water.Acid solution is pumped in overflow launder or is sent between overflow launder and buck surge tank by metering in sour tank
In pipeline.The pH on-line analyses exported by buck surge tank make outlet buck pH controls exist controlling the flow of sour dosing pump
Between 7.0 to 9.0.Wherein added acid includes but is not limited to hydrochloric acid, nitric acid or sulphuric acid.
Major part reenters coal gasification apparatus recycling to clear water after the pressurization of grey water pump in buck surge tank；It is few
Part is through heat exchange cooling heel row to sewage disposal system.Control to drain into sewage disposal system by buck surge tank water quality
The water yield.
The beneficial effects of the utility model are as follows：
This utility model provides a kind of system of gas treatment ashing water, solves that coal gasification wastewater discharge capacity is big, is
The problem of system fouling.System of the present utility model can effectively reduce hardness in coal gasification buck, turbidity and concentration of suspension, right
High in the waste water treatment efficiency of high rigidity, high concentrtion and high suspended matter concentration, the waste water handled by this utility model its turbidity can
Up to 7000mg/L, concentration of suspension is up to 6700mg/L, and hardness is up to 2090mg/L, far above processing waste water in prior art
Ability, up to more than 99%, hardness clearance is up to more than 82% for its float and turbidity removal rate.
Description of the drawings
Fig. 1 is the process chart of gas treatment ashing water；
Fig. 2 is the system diagram of gas treatment ashing water；Wherein, 1 is electrochemical reaction area, and 2 is settling zone, and 31 is alkali tank,
32 is dosing pump, and 41 is sodium carbonate liquor basin, and 42 is dosing pump, and 5 are sour tank, and 6 is buck surge tank, and 7 are grey water pump, and 8 are
Slush pump, 9 is vacuum filtering system.
Specific embodiment
In order to be illustrated more clearly that this utility model, this utility model is described further with reference to embodiment.
It will be appreciated by those skilled in the art that below specifically described content is illustrative and be not restrictive, should not be limited with this
Make protection domain of the present utility model.
Embodiment 1
The system of the gas treatment ashing water that this utility model is provided, including electrochemical reaction area and settling zone；
Wherein, electric flocculation reactor is placed with electrochemical reaction area, electric flocculation reactor is using ferroalloy materials or aluminum
Alloy material is used as electrode；Sedimentation tank area is disposed with swash plate and rotating machinery；The outlet connection settling zone in electrochemical reaction area enters
Mouthful.In grey water treatment procedure, unidirectional current is passed through to electrode, in the presence of electric field and aeration, can be produced in electrochemical reaction area
The impurity such as raw high activity adsorption group, absorption water-borne glue body, float, form larger batting-unit structure and separate out from water；With
Enter settling zone afterwards, the swash plate and rotating machinery of settling zone act as causing settling and more uniform prevent from blocking.
The system also includes sodium carbonate liquor tank, sodium carbonate liquor pipeline and dosing pump, and it is used to add into reaction zone
Plus sodium carbonate liquor, sunk with adjusting the carbonic acid and bicarbonate basicity of buck and making calcium ion in buck fully react generation Calcium Carbonate
Form sediment；Wherein, the entrance of sodium carbonate liquor pipeline is connected with sodium carbonate liquor tank, and outlet is located in electrochemical reaction area under battery lead plate
Side；
Further, the system also includes alkali tank and dosing pump, wherein the alkali tank is connected to electrification by dosing pump
Learn reaction zone to be used for adjusting the pH of buck, pH is controlled between 9.0 to 10.5；Dosing pump is used to control the flow of alkali liquor.
Further, the system also includes buck surge tank, and electrochemical reaction area top is provided with overflow launder, overflow launder
It is connected with buck surge tank by pipeline；The outlet of buck surge tank is connected with grey water pump, and it can pressurize to clear water after process, make
Most of clear water reenters coal gasification apparatus and is reused, and small part drains into sewage disposal system；And also can pass through
The water quality of buck surge tank carrys out the water yield that Quality Control drains into sewage disposal system.
Further, the system also includes sour tank and dosing pump, wherein sour tank by dosing pump be connected to overflow launder or
Pipeline between person's overflow launder and buck surge tank, for clear water addition acid after process so that the pH controls of clear water after process
Between 7.0 to 9.0, it is easy to reenter coal gasification apparatus and is circulated utilization.
Further, the system also includes vacuum filter system machine and slush pump, wherein, the settling zone outlet passes through mud
Stock pump is connected with vacuum filter；Wherein vacuum filter is filtered to the mud that settling zone is formed, after obtaining filtering residue and filter
Buck；Buck is processed in electrochemical reaction area again after filter, and filtering residue carries out the process such as burning.
System described in the present embodiment can be processed coal gasification buck, effectively reduce turbidity, the float of buck
And hardness, its operational approach is as follows：
1) in electrochemical reaction area, DC source is connected, and is passed through factory air.In the presence of electric field and aeration,
The impurity such as efficient absorption group, absorption water-borne glue body, float can be produced in electrochemical reaction area, larger floccule body knot is formed
Structure is separated out from water；
Meanwhile, by adding sodium hydroxide solution to adjust pH between 9.0 to 10.5 to electrochemical reaction area, and adjust
Basicity, makes the calcium ions and magnesium ions Precipitation in buck, and with efficient absorption group coalescence；
Wherein, the method for adjusting basicity is that the sodium carbonate liquor in sodium carbonate liquor tank is added to into reaction zone, and is passed through
Dosing pump controls flow, and its addition is 0.2～1.5Kg/1t gasification ash waters, to prevent from being sent out on the electrode of electric flocculation reactor
Raw reaction forms precipitation, preferably adds it to the position below battery lead plate.
2) by step 1) process after the water that obtains precipitated into settling zone by electrochemical reaction area bottom, obtain mud
And clear water；Also factory air can be passed through to the middle and upper part of settling zone to promote high activity group fully to flocculate, and flow tune is set
Section valve, adjusts as needed air mass flow.
3) to step 2) sulfur acid for adjusting pH is added between 7.0-9.0 in the clear water that obtains.
Further, methods described is also included step 2) mud that obtains delivers to vacuum filter and filtered, obtain
Buck after filtering residue and filter, buck is reentered and processed in electrochemical reaction area after filter.
Further, methods described is also included step 2) clear water that obtains reenters coal gasification apparatus after being pressurizeed
Reused.
The clear water for taking untreated coal gasification buck and being obtained using the present embodiment processing system detected, Testing index
It is as follows：
Import gasification ash water water quality is：PH is 8.5, and turbidity is 20mg/L, and float is 27mg/L, and total hardness is
1290mg/L, total magnesium is 26.2mg/L, and total calcium is 416mg/L.Buck water quality is that PH is 7.9 after this PROCESS FOR TREATMENT, turbidity
For 4mg/L, float is 5mg/L, and total hardness is 158mg/L, and total magnesium is 2.6mg/L, and total calcium is 38mg/L.
Embodiment 2
This utility model provides a kind of system of gas treatment ashing water, including electrochemical reaction area and settling zone；Its
In, electric flocculation reactor is placed with electrochemical reaction area, electric flocculation reactor is made using ferroalloy materials or aluminum alloy materials
For electrode；Sedimentation tank area is disposed with swash plate and rotating machinery；The outlet connection settling zone entrance in electrochemical reaction area.At buck
During reason, unidirectional current is passed through to electrode, in the presence of electric field and aeration, high activity absorption can be produced in electrochemical reaction area
The impurity such as group, absorption water-borne glue body, float, form larger batting-unit structure and separate out from water；Subsequently enter settling zone,
The swash plate and rotating machinery of settling zone act as so that settle more it is uniform prevent blocking.
The system also includes converter unit, low pressure conversion condensed fluid pipeline and dosing pump, and it is used to add into reaction zone
Plus low pressure conversion condensed fluid, to adjust the basicity of buck and make calcium ion in buck fully react generation precipitation of calcium carbonate；Wherein,
The entrance of low pressure conversion condensed fluid pipeline is connected with converter unit, and outlet is located at battery lead plate lower section in electrochemical reaction area；
Further, the system also includes alkali tank and dosing pump, wherein the alkali tank is connected to electrification by dosing pump
Learn reaction zone to be used for adjusting the pH of buck, pH is controlled between 9.0 to 10.5；Dosing pump is used to control the flow of alkali liquor.
Further, the system also includes buck surge tank, and electrochemical reaction area top is provided with overflow launder, overflow launder
It is connected with buck surge tank by pipeline；The outlet of buck surge tank is connected with grey water pump, and it can pressurize to clear water after process, make
Most of clear water reenters coal gasification apparatus and is reused, and small part drains into sewage disposal system；And also can pass through
The water quality of buck surge tank carrys out the water yield that Quality Control drains into sewage disposal system.
Further, the system also includes sour tank and dosing pump, wherein sour tank by dosing pump be connected to overflow launder or
Pipeline between person's overflow launder and buck surge tank, for clear water addition acid after process so that the pH controls of clear water after process
Between 7.0 to 9.0, it is easy to reenter coal gasification apparatus and is circulated utilization.
Further, the system also includes vacuum filter system machine and slush pump, wherein, the settling zone outlet passes through mud
Stock pump is connected with vacuum filter；Wherein vacuum filter is filtered to the mud that settling zone is formed, after obtaining filtering residue and filter
Buck；Buck is processed in electrochemical reaction area again after filter, and filtering residue carries out the process such as burning.
System described in the present embodiment can be processed coal gasification buck, effectively reduce turbidity, the float of buck
And hardness, its operational approach is as follows：
1) in electrochemical reaction area, DC source is connected, and is passed through factory air.In the presence of electric field and aeration,
The impurity such as efficient absorption group, absorption water-borne glue body, float can be produced in electrochemical reaction area, larger floccule body knot is formed
Structure is separated out from water；
Meanwhile, by adding sodium hydroxide solution to adjust pH between 9.0 to 10.5 to electrochemical reaction area, and adjust
Basicity, makes the calcium ions and magnesium ions Precipitation in buck, and with efficient absorption group coalescence；
Wherein, the method for adjusting basicity is that the low pressure for coming from converter unit is converted into condensed fluid to be added to reaction zone, and
Flow is controlled by dosing pump, its addition is 1～80Kg/1t gasification ash waters；To prevent on the electrode of electric flocculation reactor
React to form precipitation, preferably add it to the position below battery lead plate.
2) by step 1) process after the water that obtains precipitated into settling zone by electrochemical reaction area bottom, obtain mud
And clear water；Also factory air can be passed through to the middle and upper part of settling zone to promote high activity group fully to flocculate, and flow tune is set
Section valve, adjusts as needed air mass flow.
3) to step 2) salt acid for adjusting pH is added between 7.0-9.0 in the clear water that obtains.
Further, the method is also included step 2) mud that obtains delivers to vacuum filter and filtered, filtered
Buck after slag and filter, buck is reentered and processed in electrochemical reaction area after filter.
Further, the method is also included step 2) clear water that obtains reenters coal gasification apparatus and enters after being pressurizeed
Row recycling.
The clear water for taking untreated coal gasification buck and being obtained using the present embodiment processing system detected, Testing index
It is as follows：
Import gasification ash water water quality is：PH is 8.5, and turbidity is 7000mg/L, and float is 6700mg/L, and total hardness is
1750mg/L, total magnesium is 36mg/L, and total calcium is 775mg/L.Buck water quality is that PH is 8.1 after this PROCESS FOR TREATMENT, and turbidity is
30mg/L, float is 25mg/L, and total hardness is 312mg/L, and total magnesium is 2.4mg/L, and total calcium is 112mg/L.
Embodiment 3
The system of the gas treatment ashing water that this utility model is provided, including electrochemical reaction area and settling zone；
Wherein, electric flocculation reactor is placed with electrochemical reaction area, electric flocculation reactor is using ferroalloy materials or aluminum
Alloy material is used as electrode；Sedimentation tank area is disposed with swash plate and rotating machinery；The outlet connection settling zone in electrochemical reaction area enters
Mouthful.In grey water treatment procedure, unidirectional current is passed through to electrode, in the presence of electric field and aeration, can be produced in electrochemical reaction area
The impurity such as raw high activity adsorption group, absorption water-borne glue body, float, form larger batting-unit structure and separate out from water；With
Enter settling zone afterwards, the swash plate and rotating machinery of settling zone act as causing settling and more uniform prevent from blocking.
The system also includes desulfurization and decarburization unit, carbon dioxide gass fluid line and flow control valve, and it is used for reaction
Add carbon dioxide in area, to adjust the basicity of buck and make calcium ion in buck fully react generation precipitation of calcium carbonate；
Wherein, the entrance of carbon dioxide gass fluid line is connected with desulfurization and decarburization unit, and outlet is located in electrochemical reaction area under battery lead plate
Side；
Further, the system also includes alkali tank and dosing pump, wherein the alkali tank is connected to electrification by dosing pump
Learn reaction zone to be used for adjusting the pH of buck, pH is controlled between 9.0 to 10.5；Dosing pump is used to control the flow of alkali liquor.
Further, the system also includes buck surge tank, and electrochemical reaction area top is provided with overflow launder, overflow launder
It is connected with buck surge tank by pipeline；The outlet of buck surge tank is connected with grey water pump, and it can pressurize to clear water after process, make
Most of clear water reenters coal gasification apparatus and is reused, and small part drains into sewage disposal system；And also can pass through
The water quality of buck surge tank carrys out the water yield that Quality Control drains into sewage disposal system.
Further, the system also includes sour tank and dosing pump, wherein sour tank by dosing pump be connected to overflow launder or
Pipeline between person's overflow launder and buck surge tank, for clear water addition acid after process so that the pH controls of clear water after process
Between 7.0 to 9.0, it is easy to reenter coal gasification apparatus and is circulated utilization.
Further, the system also includes vacuum filter system machine and slush pump, wherein, the settling zone outlet passes through mud
Stock pump is connected with vacuum filter；Wherein vacuum filter is filtered to the mud that settling zone is formed, after obtaining filtering residue and filter
Buck；Buck is processed in electrochemical reaction area again after filter, and filtering residue carries out the process such as burning.
System described in the present embodiment can be processed coal gasification buck, effectively reduce the turbidity of buck, float and
Hardness, its operational approach is as follows：
1) in electrochemical reaction area, DC source is connected, and is passed through factory air.In the presence of electric field and aeration,
The impurity such as efficient absorption group, absorption water-borne glue body, float can be produced in electrochemical reaction area, larger floccule body knot is formed
Structure is separated out from water；
Meanwhile, by adding sodium hydroxide solution to adjust pH between 9.0 to 10.5 to electrochemical reaction area, and adjust
Basicity, makes the calcium ions and magnesium ions Precipitation in buck, and with efficient absorption group coalescence；
Wherein, the method for adjusting basicity is to add the carbon dioxide for coming from coal gasification apparatus desulfurization and decarburization unit
To reaction zone, and by Flux Valve Control flow, its addition is 1～5Nm3/ 1t gasification ash waters；To prevent in electric flocculation
React to form precipitation on the electrode of reactor, preferably add it to the position below battery lead plate.
2) by step 1) process after the water that obtains precipitated into settling zone by electrochemical reaction area bottom, obtain mud
And clear water；Also factory air can be passed through to the middle and upper part of settling zone to promote high activity group fully to flocculate, and flow tune is set
Section valve, adjusts as needed air mass flow.
3) to step 2) nitre acid for adjusting pH is added between 7.0-9.0 in the clear water that obtains.
Further, methods described is also included step 2) mud that obtains delivers to vacuum filter and filtered, obtain
Buck after filtering residue and filter, buck is reentered and processed in electrochemical reaction area after filter.
Further, methods described is also included step 2) clear water that obtains reenters coal gasification apparatus after being pressurizeed
Reused.
The clear water for taking untreated coal gasification buck and being obtained using the present embodiment processing system detected, Testing index
It is as follows：
Import gasification ash water water quality is：PH is 8.7, and turbidity is 6000mg/L, and float is 5910mg/L, and total hardness is
2090mg/L, total magnesium is 87.5mg/L, and total calcium is 776mg/L.Buck water quality is that PH is 8.2 after this PROCESS FOR TREATMENT, turbidity
For 28mg/L, float is 24mg/L, and total hardness is 365mg/L, and total magnesium is 7.1mg/L, and total calcium is 148mg/L.
Embodiment 4
The system of the gas treatment ashing water that this utility model is provided, including electrochemical reaction area and settling zone；
Wherein, electric flocculation reactor is placed with electrochemical reaction area, electric flocculation reactor is using ferroalloy materials or aluminum
Alloy material is used as electrode；Sedimentation tank area is disposed with swash plate and rotating machinery；The outlet connection settling zone in electrochemical reaction area enters
Mouthful.In grey water treatment procedure, unidirectional current is passed through to electrode, in the presence of electric field and aeration, can be produced in electrochemical reaction area
The impurity such as raw high activity adsorption group, absorption water-borne glue body, float, form larger batting-unit structure and separate out from water；With
Enter settling zone afterwards, the swash plate and rotating machinery of settling zone act as causing settling and more uniform prevent from blocking.
The system also includes a) sodium carbonate liquor tank, sodium carbonate liquor pipeline and dosing pump；B) converter unit, conversion are cold
Lime set pipeline and dosing pump；And c) desulfurization and decarburization unit, carbon dioxide gass fluid line and flow control valve.It is used for reaction zone
Interior addition sodium carbonate liquor, conversion condensed fluid and carbon dioxide, to adjust the carbonic acid and bicarbonate basicity of buck and make ash
Calcium ion fully reacts generation precipitation of calcium carbonate in water；Wherein, sodium carbonate liquor pipeline, conversion condensed fluid pipeline and carbon dioxide
The outlet of gas line is located at battery lead plate lower section in electrochemical reaction area.
Further, the system also includes alkali tank and dosing pump, wherein the alkali tank is connected to electrification by dosing pump
Learn reaction zone to be used for adjusting the pH of buck, pH is controlled between 9.0 to 10.5；Dosing pump is used to control the flow of alkali liquor.
Further, the system also includes buck surge tank, and electrochemical reaction area top is provided with overflow launder, overflow launder
It is connected with buck surge tank by pipeline；The outlet of buck surge tank is connected with grey water pump, and it can pressurize to clear water after process, make
Most of clear water reenters coal gasification apparatus and is reused, and small part drains into sewage disposal system；And also can pass through
The water quality of buck surge tank carrys out the water yield that Quality Control drains into sewage disposal system.
Further, the system also includes sour tank and dosing pump, wherein sour tank by dosing pump be connected to overflow launder or
Pipeline between person's overflow launder and buck surge tank, for clear water addition acid after process so that the pH controls of clear water after process
Between 7.0 to 9.0, it is easy to reenter coal gasification apparatus and is circulated utilization.
Further, the system also includes vacuum filter system machine and slush pump, wherein, the settling zone outlet passes through mud
Stock pump is connected with vacuum filter；Wherein vacuum filter is filtered to the mud that settling zone is formed, after obtaining filtering residue and filter
Buck；Buck is processed in electrochemical reaction area again after filter, and filtering residue carries out the process such as burning.
System described in the present embodiment can be processed coal gasification buck, effectively reduce turbidity, the float of buck
And hardness, its operational approach is as follows：
1) in electrochemical reaction area, DC source is connected, and is passed through factory air.In the presence of electric field and aeration,
The impurity such as efficient absorption group, absorption water-borne glue body, float can be produced in electrochemical reaction area, larger floccule body knot is formed
Structure is separated out from water；
Meanwhile, by adding sodium hydroxide solution to adjust pH between 9.0 to 10.5 to electrochemical reaction area, and adjust
Basicity, makes the calcium ions and magnesium ions Precipitation in buck, and with efficient absorption group coalescence；
Wherein, the method for adjusting basicity is while being added to by sodium carbonate liquor, conversion condensed fluid and carbon dioxide
Reaction zone, and by controlling flow, its addition is respectively 0.2Kg/1t gasification ash waters, 20Kg/1t gasification ash waters and 1Nm3/1t
Gasification ash water, to prevent from being reacted on the electrode of electric flocculation reactor precipitation is formed, preferably add it to battery lead plate with
Under position.
2) by step 1) process after the water that obtains precipitated into settling zone by electrochemical reaction area bottom, obtain mud
And clear water；Also factory air can be passed through to the middle and upper part of settling zone to promote high activity group fully to flocculate, and flow tune is set
Section valve, adjusts as needed air mass flow.
3) to step 2) sulfur acid for adjusting pH is added between 7.0-9.0 in the clear water that obtains.
Further, methods described is also included step 2) mud that obtains delivers to vacuum filter and filtered, obtain
Buck after filtering residue and filter, buck is reentered and processed in electrochemical reaction area after filter.
Further, methods described is also included step 2) clear water that obtains reenters coal gasification apparatus after being pressurizeed
Reused.
The clear water for taking untreated coal gasification buck and being obtained using the present embodiment processing system detected, Testing index
It is as follows：
Import gasification ash water water quality is：PH is 8.5, and turbidity is 20mg/L, and float is 27mg/L, and total hardness is
1290mg/L, total magnesium is 26.2mg/L, and total calcium is 416mg/L.Buck water quality is that PH is 7.9 after this PROCESS FOR TREATMENT, turbidity
For 4mg/L, float is 5mg/L, and total hardness is 140mg/L, and total magnesium is 2.6mg/L, and total calcium is 36mg/L.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate this utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all of embodiment cannot be exhaustive here,
It is every to belong to the obvious change or change still in of the present utility model that the technical solution of the utility model extends out
The row of protection domain.
Claims (9)
1. a kind of system of gas treatment ashing water, it is characterised in that the system includes electrochemical reaction area and settling zone；
Wherein, electric flocculation reactor is placed with electrochemical reaction area, sedimentation tank area is disposed with swash plate and rotating machinery；Electrochemistry
The outlet connection settling zone entrance of reaction zone.
2. system according to claim 1, it is characterised in that the system also includes following arbitrary or its combination in any：
A) sodium carbonate liquor tank, sodium carbonate liquor pipeline and dosing pump；
B) converter unit, conversion condensed fluid pipeline and dosing pump；Or
C) desulfurization and decarburization unit, carbon dioxide gass fluid line and flow control valve.
3. system according to claim 1, it is characterised in that the system also includes buck surge tank.
4. system according to claim 3, it is characterised in that electrochemical reaction area top is provided with overflow launder, overflow launder leads to
Piping is connected with buck surge tank.
5. system according to claim 1, it is characterised in that the electric flocculation reactor is closed using ferroalloy materials or aluminum
Golden material is used as electrode.
6. system according to claim 1, it is characterised in that the system also includes alkali tank.
7. system according to claim 6, it is characterised in that the alkali tank is connected to electrochemical reaction by dosing pump
Area.
8. system according to claim 1, it is characterised in that the system also includes sour tank.
9. system according to claim 1, it is characterised in that the system also includes vacuum filtering system and slush pump,
Wherein, the settling zone outlet is connected to vacuum filtering system by slush pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621100510.7U CN206109116U (en) | 2016-09-30 | 2016-09-30 | System for handle coal gasification buck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621100510.7U CN206109116U (en) | 2016-09-30 | 2016-09-30 | System for handle coal gasification buck |
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ID=58521248
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630307A (en) * | 2016-09-30 | 2017-05-10 | 航天长征化学工程股份有限公司 | System and method for treating coal gasification grey water |
| CN111039474A (en) * | 2019-12-26 | 2020-04-21 | 西安泰金工业电化学技术有限公司 | Power plant circulating water treatment system and method |
-
2016
- 2016-09-30 CN CN201621100510.7U patent/CN206109116U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630307A (en) * | 2016-09-30 | 2017-05-10 | 航天长征化学工程股份有限公司 | System and method for treating coal gasification grey water |
| CN111039474A (en) * | 2019-12-26 | 2020-04-21 | 西安泰金工业电化学技术有限公司 | Power plant circulating water treatment system and method |
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