CN206156893U - Coal industry waste lye pollutes integrated control system - Google Patents
Coal industry waste lye pollutes integrated control system Download PDFInfo
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- CN206156893U CN206156893U CN201620756939.5U CN201620756939U CN206156893U CN 206156893 U CN206156893 U CN 206156893U CN 201620756939 U CN201620756939 U CN 201620756939U CN 206156893 U CN206156893 U CN 206156893U
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- spent lye
- lye
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Abstract
The utility model discloses a coal industry waste lye pollutes integrated control system, coal industry waste lye pollutes integrated control system is including useless lye recovery clean system and the waste lye system of recycling, useless lye recovery clean system includes: waste water catch basin, gravity separation ware, profit collecting pit, air supporting device, oil water separator, ozone and H2O2 unite oxidation unit, walnut shell filter, the waste water catch basin is connected to through the promotion of first pump the gravity separation ware, the gravity separation ware is connected the air supporting device, and the gravity separation ware is still connected through the overflow launder the profit collecting pit, the air supporting device is connected to oil water separator, oil water separator promotes through the second pump and is connected to ozone and H2O2 unite oxidation unit, ozone and H2O2 unite oxidation unit and connect walnut shell filter.
Description
Technical field
The utility model is related to industrial waste water treatment, and more particularly to a kind of Coal Chemical Industry spent lye pollution is comprehensive
Control system.
Background technology
At present olefin hydrocarbon making by coal isolation of purified process, generally removes the CO in product gas using alkali wash2、H2The sour gas such as S
Body.Effective alkali (referring mainly to NaOH) concentration in its circulation alkali liquor is constantly reduced, and is the reactivity for ensureing alkali wash water, is needed not
Break and supplement fresh soda in highly basic section, while discharging alkali lye, i.e. alkali-washing waste liquid from weak base section.
Spent lye is that a kind of pollutant component is complicated, the special industrial waste water that pollution concentration is high.Due under the conditions of alkali lye,
Unsaturated hydrocarbons in unstripped gas can be polymerized, and sticky liquid is produced in alkali lye and is gathered in system, and connect with air
Thixotroping yellowly, commonly referred to " butter ".The generation of " butter " not only results in the blocking of tower tray, pipeline and equipment, affects system
Operation, and spent lye discharge can also water supply system bring severe contamination.
At present, it is domestic to solve high oil-containing spent lye pollution problem, it is generally directed to the high water quality of spent lye oil content special
Point, the method for the process that custom is taken, such as burning method, oxidizing process, neutralization-combustion method.But, these methods have it to limit to
Property：
1st, burning disposal is carried out to spent lye using burning method, disposable apparatus investment, day-to-day operation and administration fee compared with
Height, and the tail gas for producing that burns contains a large amount of SO2、H2The pernicious gases such as S, easily cause secondary pollution, and enterprise is typically less to adopt
Receive.
2nd, using the oily substance in oxidizing process degraded the spent lye, (operation temperature 190 typically based on wet oxidation process
DEG C, operating pressure 3.0MPa), equipment investment and operational management require it is higher, and due in spent lye oily substance be mainly alkene
The crosslinking organic matter that hydro carbons, aromatic hydrocarbons are formed, wet oxidation process is limited to the degradation efficiency of this type organic, and the method is by portion
Big moulded coal enterprise is divided to use, but treatment effect is general.
3rd, using sour neutralisation, with acid neutralization spent lye pH to 6～7, subsequently into flare system, (part ethene enterprise uses
The CO of sulfuric acid or glycol unit2Solution makees neutralization acid with water), but the SO produced after burning2Still result in the secondary dirt of environment
Dye, and the sour dosage that neutralization is used is larger, operating cost is higher.
It is desirable to there is a kind of Coal Chemical Industry spent lye pollution complex control system effectively to solve above-mentioned prior art
Defect.
Utility model content
The purpose of this utility model is to provide a kind of Coal Chemical Industry spent lye pollution complex control system to overcome existing skill
The problems referred to above present in art.
For achieving the above object, the utility model provides a kind of Coal Chemical Industry spent lye pollution complex control system, the coal
Chemical waste alkaline liquor pollution complex control system includes：Spent lye recovering and purifying system and spent lye reutilization system, the salkali waste
Liquid recovering and purifying system includes：Wastewater collecting basin, gravity separator, profit collecting pit, air-floating apparatus, oil water separator, ozone
And H2O2Co-oxidation device, walnut shell filter；The wastewater collecting basin is connected to the gravity point by the lifting of the first pump
From device, the gravity separator connects the air-floating apparatus, and the gravity separator also Jing overflow launders connect the profit
Collecting pit, the air-floating apparatus are connected to the oil water separator, and the pumps of oil water separator Jing second lifting is connected to described
Ozone and H2O2Co-oxidation device, the ozone and H2O2Co-oxidation device connects the walnut shell filter.
Preferably, the gravity separator pressure inlets and oil water separator pressure inlets are respectively provided with H2O2Drug feeding pipeline
Blender.
Preferably, the spent lye reutilization system includes：Coal gasification buck removes hardness spent lye reutilization system, coal gas
Ashing water ammonia still process spent lye reutilization system and coal gasification wastewater biochemical treatment spent lye reutilization system.
Preferably, the coal gasification buck removes hardness spent lye reutilization system includes first order reaction pond and combined type except hard
Device, the first order reaction pond is connected to the combined type hardness removing device by the 3rd pump；The coal gasification buck is useless except hardness
Alkali lye reutilization system is used for gasification system flash evaporation unit and discharges high rigidity buck, removes in buck because of calcium ions and magnesium ions formation
Permanent hardness, except the buck after hard reuse to gasification system, can reduce the increment of circulatory system fresh water again, while drop
The low system-wide grey water hardness, solves equipment, pipeline scale blockage problem.
Preferably, the coal gasification buck ammonia still process spent lye reutilization system includes waste water homogeneous pond and ammonia steaming device, institute
State waste water homogeneous pond and the ammonia steaming device is connected to by the 4th pump, the ammonia steaming device tower reactor waste liquid flow to sewage disposal list
Unit, 10-15% ammoniacal liquor flow to sulfur recovery unit or flue gas desulfurization device in the ammonia steaming device；When gasification system discharges buck
NH3It is equipment investment and the operating cost for reducing buck biochemical treatment during-N ＞ 500mg/L, high-ammonia wastewater need to be carried out at materialization
Reason removes ammonia nitrogen (processing method：Ammonia still process/stripping), in pH, treatment effeciency is optimal under 10～11 operating mode, and surplus alkalinity can fill
Divide the pH for presetting gasification ash water, reduce the usage amount of fresh alkali lye, reduce operating cost, what ammonia still process/stripping device was produced
10～15% ammoniacal liquor can also deliver to the sulfur recovery unit of gasification system or flue gas desulfurization device is recycled.
Preferably, the coal gasification wastewater biochemical treatment spent lye reutilization system includes：Hydrolysis acidification pool, anaerobic reaction
Device and efficient denitrification biochemistry pool；When gasification system discharges buck NH3During-N ＜ 500mg/L, high ammonia buck need to efficiently be given birth to
Thing denitrogenation processing, its mechanism is the continuous circulation of nitrification/anti-nitration reaction, and is disappeared in a large number along with comprehensive basicity in buck
Consumption, is the stable operation for maintaining high-efficiency biological denitrification system, and system need to supplement a large amount of basicity, and reclaiming surplus alkalinity can be sufficiently used for
Herein, the magnitude of recruitment of fresh alkali lye is reduced, operating cost is reduced.
The utility model provides a kind of Coal Chemical Industry spent lye and pollutes complex control system, the Coal Chemical Industry spent lye pollution
The CO that complex control system is discharged using production technology device2Waste gas carries out breakdown of emulsion to spent lye, at the same using efficiently separating, oxygen
The purifiers such as change, filtration remove oily substance and hardly degraded organic substance in spent lye, reclaim residue Na2CO3Basicity meets system
System is recycled and required, reaches the purpose of the treatment of wastes with processes of wastes against one another, clean manufacturing, high concentration oily pollution has both been solved the problems, such as, while oil recovery
Divide with basicity and be used in process system.
Description of the drawings
Fig. 1 is used for coal gasification buck except the Coal Chemical Industry spent lye of hardness is reclaimed and cleaning system and spent lye reutilization system
Schematic flow sheet.
Fig. 2 is used for the Coal Chemical Industry spent lye of coal gasification buck ammonia still process and reclaims and cleaning system and spent lye reutilization system
Schematic flow sheet.
Fig. 3 is used for the Coal Chemical Industry spent lye of coal gasification wastewater biochemical treatment and reclaims and cleaning system and spent lye recycling system
The schematic flow sheet of system.
Specific embodiment
Purpose, technical scheme and advantage to implement the utility model is clearer, below in conjunction with the utility model
Accompanying drawing in embodiment, is further described in more detail to the technical scheme in the utility model embodiment.In the accompanying drawings, ad initio
Same or similar element is represented to end with same or similar label or the element with same or like function.Described
Embodiment is a part of embodiment of the utility model, rather than the embodiment of whole.Below with reference to the enforcement of Description of Drawings
Example is exemplary, it is intended to for explaining the utility model, and it is not intended that to restriction of the present utility model.Based on this practicality
Embodiment in new, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of the utility model protection is belonged to.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " is based on accompanying drawing institute
The orientation for showing or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
The restriction of novel protected scope.
In the broad embodiment of the utility model one, Coal Chemical Industry spent lye pollution complex control system, the Coal Chemical Industry is given up
Alkali lye pollution complex control system includes：Spent lye recovering and purifying system and spent lye reutilization system, the spent lye is reclaimed
Cleaning system includes：Wastewater collecting basin, gravity separator, profit collecting pit, air-floating apparatus, oil water separator, ozone and H2O2Connection
Close oxidation unit, walnut shell filter；The wastewater collecting basin is connected to the gravity separator, institute by the lifting of the first pump
State gravity separator and connect the air-floating apparatus, and the gravity separator also Jing overflow launders connect the profit collecting pit,
The air-floating apparatus are connected to the oil water separator, the pumps of oil water separator Jing second lifted be connected to the ozone and
H2O2Co-oxidation device, the ozone and H2O2Co-oxidation device connects the walnut shell filter.
As shown in figure 1, embodiment 1：With disposal ability 5m3/ h, total oil concentration 600ppm, NaOH mass concentration 4%,
Na2CO3Mass concentration 4%, pH is 14 Coal Chemical Industry salkali waste liquid treating system, and purification spent lye is removed for coal gasification buck
As a example by hardness system, first with the CO of production technology device discharge2Waste gas is in wastewater collecting basin 1 to oil-containing olefin hydrocarbon making by coal salkali waste
Liquid carries out breakdown of emulsion, processes 5m3/ h spent lyes, need the CO of 600-800kg/h2Waste gas；Spent lye is promoted to Gravity Separation after breakdown of emulsion
Device 2 carries out water-oil separating, and wherein Jing after overflow launder collection from profit collecting pit is flow to, spent lye flow to air-floating apparatus 3 to oil slick certainly；
Meanwhile, the pressure inlets of gravity separator 2 arrange H2O2Drug feeding pipeline blender, using the time of staying oxidation section of gravity separator 2
Divide dissolubility oily substance (olefin compound).Demulsifier, flocculant are added in the water distribution mixing channel of air-floating apparatus 3, device is floated on
The oily substance Jing air supporting mud scrapers on surface are collected to scum trough, and the spent lye Jing collector pipes in air-floating apparatus are collected to air supporting
Pond.The water outlet Jing pumps of air-floating apparatus 3 are promoted to oil water separator 4, and by high density filter core dispersed oil, oil water separator 4 are retained
Inside is provided with oil collecting zone, and the oils of collection flow to profit collecting pit by pressure, and spent lye Jing pressure flow to intermediate pool, profit
The pressure inlets of separator 4 arrange H2O2Drug feeding pipeline blender, is aoxidized using the time of staying of oil water separator 4 and intermediate pool
Partial solubility oily substance (olefin compound).Intermediate pool waste water Jing pumps are promoted to ozone and H2O2Co-oxidation breakdown of emulsion is filled
5 are put, by combining the dissolubility oily substance (aromatic hydrocarbon substance) that Strong oxdiative is degraded in spent lye.Co-oxidation breaking device 5
Discharge pressure flow to walnut shell filter 6, further removes the remaining various oily substances of spent lye, it is ensured that reclaims spent lye and contains
Oil mass is down to below 40mg/L, reaches system and recycles requirement.The oil in spent lye is removed Jing after two-stage is separated, aoxidized, filtering
Class material, water outlet oil content is down to 40ppm, Na2CO3Content about 9.3%.
Reclaim oils method of disposal：Reclaim oil quality about 66kg/d, Jing oil slick storage tank collect after periodically deliver to coal bunker with
Gasification furnace is sent to burn after coal slurry mixing.
The method that spent lye is recycled：Reclaim Na2CO3Quality about 11.16t/d, the alkali lye after purification is delivered to anti-including one-level
Answering the gasification ash water clarifier of pond 7 and combined type hardness removing device 8 carries out buck except hardness is (mainly for permanent hard in buck
Degree), the grey water hardness is down to into below 200ppm by 2000ppm, except the buck after hard, to be back to the gasification ash water circulatory system sharp again
With so as to reduce the increment of technique fresh water.
As shown in Fig. 2 embodiment 2：With disposal ability 5m3/ h, total oil concentration 600ppm, NaOH mass concentration 4%,
Na2CO3Mass concentration 4%, pH is 14 Coal Chemical Industry salkali waste liquid treating system, and purification spent lye is for the steaming of coal gasification buck
As a example by ammonia system, first with the CO of production technology device discharge2Waste gas is in wastewater collecting basin 1 to oil-containing olefin hydrocarbon making by coal spent lye
Breakdown of emulsion is carried out, 5m is processed3/ h spent lyes, need the CO of 600-800kg/h2Waste gas；Spent lye is promoted to gravity separator after breakdown of emulsion
2 carry out water-oil separating, and wherein Jing after overflow launder collection from profit collecting pit is flow to, spent lye flow to air-floating apparatus 3 to oil slick certainly；Together
When, the pressure inlets of gravity separator 2 arrange H2O2Drug feeding pipeline blender, using the time of staying oxidized portion of gravity separator 2
Dissolubility oily substance (olefin compound).Demulsifier, flocculant are added in the water distribution mixing channel of air-floating apparatus 3, device table is floated on
The oily substance Jing air supporting mud scrapers in face are collected to scum trough, and the spent lye Jing collector pipes in air-floating apparatus are collected to air supporting water outlet
Pond.The water outlet Jing pumps of air-floating apparatus 3 are promoted to oil water separator 4, dispersed oil are retained by high density filter core, in oil water separator 4
Portion is provided with oil collecting zone, and the oils of collection flow to profit collecting pit by pressure, and spent lye Jing pressure flow to intermediate pool, profit point
From the pressure inlets of device 4, H is set2O2Drug feeding pipeline blender, using oil water separator 4 and the time of staying oxidation section of intermediate pool
Divide dissolubility oily substance (olefin compound).Intermediate pool waste water Jing pumps are promoted to ozone and H2O2Co-oxidation breaking device
5, by combining the dissolubility oily substance (aromatic hydrocarbon substance) that Strong oxdiative is degraded in spent lye.Co-oxidation breaking device 5 goes out
Water pressure flow to walnut shell filter 6, further removes the remaining various oily substances of spent lye, it is ensured that reclaim spent lye oil-containing
Amount is down to below 40mg/L, reaches system and recycles requirement.The oils in spent lye is removed Jing after two-stage is separated, aoxidized, filtering
Material, water outlet oil content is down to 40ppm, Na2CO3Content about 9.3%.
Reclaim oils method of disposal：Reclaim oil quality about 66kg/d, Jing oil slick storage tank collect after periodically deliver to coal bunker with
Gasification furnace is sent to burn after coal slurry mixing.
The method for recycling alkali lye basicity：When gasification system discharges buck NH3It is to reduce coal gas during-N ＞ 500mg/L
The equipment investment of change system biochemical wastewater treatment and operating cost, high-ammonia wastewater passes sequentially through waste water homogeneous pond 7 and ammonia steaming device 8
Ammonia still process/stripping process is carried out to high-ammonia wastewater except ammonia nitrogen, is the optimization process operating mode for ensureing buck pH between 10-11, reclaim alkali
Degree can be used for the pH of presetting gasification ash water, reduce the usage amount of fresh alkali lye, reduce operating cost, and ammonia still process/stripping device is produced
10-15% ammoniacal liquor can also deliver to gasification system sulfur recovery unit or flue gas desulfurization device recycle.
As shown in figure 3, embodiment 3 is with disposal ability 5m3/ h, total oil concentration 600ppm, NaOH mass concentration 4%, Na2CO3
Mass concentration 4%, pH is 14 Coal Chemical Industry salkali waste liquid treating system, and purification spent lye is used for coal gasification wastewater biochemical treatment
As a example by system, first with the CO of production technology device discharge2Waste gas enters in wastewater collecting basin 1 to oil-containing olefin hydrocarbon making by coal spent lye
Row breakdown of emulsion, processes 5m3/ h spent lyes, need the CO of 600-800kg/h2Waste gas；Spent lye is promoted to gravity separator 2 after breakdown of emulsion
Water-oil separating is carried out, wherein Jing after overflow launder collection from profit collecting pit is flow to, spent lye flow to air-floating apparatus 3 to oil slick certainly；Together
When, the pressure inlets of gravity separator 2 arrange H2O2Drug feeding pipeline blender, using the time of staying oxidized portion of gravity separator 2
Dissolubility oily substance (olefin compound).Demulsifier, flocculant are added in the water distribution mixing channel of air-floating apparatus 3, device table is floated on
The oily substance Jing air supporting mud scrapers in face are collected to scum trough, and the spent lye Jing collector pipes in air-floating apparatus are collected to air supporting water outlet
Pond.The water outlet Jing pumps of air-floating apparatus 3 are promoted to oil water separator 4, dispersed oil are retained by high density filter core, in oil water separator 4
Portion is provided with oil collecting zone, and the oils of collection flow to profit collecting pit by pressure, and spent lye Jing pressure flow to intermediate pool, profit point
From the pressure inlets of device 4, H is set2O2Drug feeding pipeline blender, using oil water separator 4 and the time of staying oxidation section of intermediate pool
Divide dissolubility oily substance (olefin compound).Intermediate pool waste water Jing pumps are promoted to ozone and H2O2Co-oxidation breaking device
5, by combining the dissolubility oily substance (aromatic hydrocarbon substance) that Strong oxdiative is degraded in spent lye.Co-oxidation breaking device 5 goes out
Water pressure flow to walnut shell filter 6, further removes the remaining various oily substances of spent lye, it is ensured that reclaim spent lye oil-containing
Amount is down to below 40mg/L, reaches system and recycles requirement.The oils in spent lye is removed Jing after two-stage is separated, aoxidized, filtering
Material, water outlet oil content is down to 40ppm, Na2CO3Content about 9.3%.
Reclaim oils method of disposal：Reclaim oil quality about 66kg/d, Jing oil slick storage tank collect after periodically deliver to coal bunker with
Gasification furnace is sent to burn after coal slurry mixing.
The method for recycling alkali lye basicity：When gasification system discharge buck NH3-N ＜ 500mg/L when, buck still need into
The process of row biological denitrificaion, with nitrification/denitrification process, comprehensive basicity is consumed in a large number in buck, is to maintain high-efficiency biological denitrification
The stable operation of system, hydrolysis acidification pool 7, anaerobic reactor 8 and efficient denitrification biochemical treatment 9 all need to supplement a large amount of basicity, return
Receiving surplus alkalinity ground utilization can reduce the magnitude of recruitment of fresh alkali lye, reduce operating cost.
It is last it is to be noted that：Above example is only illustrating the technical solution of the utility model, rather than it is limited
System.Although being described in detail to the utility model with reference to the foregoing embodiments, one of ordinary skill in the art should manage
Solution：It still can modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make each embodiment of essence disengaging the utility model of appropriate technical solution
The spirit and scope of technical scheme.
Claims (6)
1. a kind of Coal Chemical Industry spent lye pollutes complex control system, it is characterised in that include：Spent lye recovering and purifying system and useless
Alkali lye reutilization system, the spent lye recovering and purifying system includes：Wastewater collecting basin, gravity separator, profit collecting pit, gas
Floating device, oil water separator, ozone and H2O2 co-oxidation devices, walnut shell filter；The wastewater collecting basin passes through first
The lifting of pump is connected to the gravity separator, and the gravity separator connects the air-floating apparatus, and the Gravity Separation
Device also Jing overflow launders connect the profit collecting pit, and the air-floating apparatus are connected to the oil water separator, the water-oil separating
The pumps of device Jing second are lifted and are connected to the ozone and H2O2 co-oxidation devices, and the ozone and H2O2 co-oxidations device connect
The walnut shell filter.
2. Coal Chemical Industry spent lye according to claim 1 pollutes complex control system, it is characterised in that：The Gravity Separation
Device pressure inlets and oil water separator pressure inlets are respectively provided with H2O2 drug feeding pipeline blenders.
3. Coal Chemical Industry spent lye according to claim 1 pollutes complex control system, it is characterised in that：The spent lye is again
Included using system：Coal gasification buck removes hardness spent lye reutilization system, coal gasification buck ammonia still process spent lye reutilization system
With coal gasification wastewater biochemical treatment spent lye reutilization system.
4. Coal Chemical Industry spent lye according to claim 3 pollutes complex control system, it is characterised in that：The coal gas ashing
Water includes first order reaction pond and combined type hardness removing device except hardness spent lye reutilization system, and the first order reaction pond passes through the 3rd
Pump is connected to the combined type hardness removing device；The coal gasification buck is used for gasification system except hardness spent lye reutilization system
Flash evaporation unit discharges high rigidity buck, removes the permanent hardness formed because of calcium ions and magnesium ions in buck.
5. Coal Chemical Industry spent lye according to claim 3 pollutes complex control system, it is characterised in that：The coal gas ashing
Water ammonia still process spent lye reutilization system includes waste water homogeneous pond and ammonia steaming device, and the waste water homogeneous pond is connected to by the 4th pump
The ammonia steaming device, the ammonia steaming device tower reactor waste liquid flow to sewage treatment unit, 10-15% ammoniacal liquor in the ammonia steaming device
It flow to sulfur recovery unit or flue gas desulfurization device.
6. Coal Chemical Industry spent lye according to claim 3 pollutes complex control system, it is characterised in that：The coal gasification is dirty
Water biochemical treatment spent lye reutilization system includes：Hydrolysis acidification pool, anaerobic reactor and efficient denitrification biochemistry pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620756939.5U CN206156893U (en) | 2016-07-18 | 2016-07-18 | Coal industry waste lye pollutes integrated control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620756939.5U CN206156893U (en) | 2016-07-18 | 2016-07-18 | Coal industry waste lye pollutes integrated control system |
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| CN206156893U true CN206156893U (en) | 2017-05-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007098A (en) * | 2016-07-18 | 2016-10-12 | 蒲城清洁能源化工有限责任公司 | Integrated control system for waste alkaline liquid pollution in coal chemical industry |
| CN108191594A (en) * | 2017-11-10 | 2018-06-22 | 中国天辰工程有限公司 | A kind of preprocess method of MTO devices spent lye |
-
2016
- 2016-07-18 CN CN201620756939.5U patent/CN206156893U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007098A (en) * | 2016-07-18 | 2016-10-12 | 蒲城清洁能源化工有限责任公司 | Integrated control system for waste alkaline liquid pollution in coal chemical industry |
| CN108191594A (en) * | 2017-11-10 | 2018-06-22 | 中国天辰工程有限公司 | A kind of preprocess method of MTO devices spent lye |
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