CN109293030A - Extracting and dephenolizing device and method for extracting and dephenolizing for coal chemical industrial waste water processing - Google Patents
Extracting and dephenolizing device and method for extracting and dephenolizing for coal chemical industrial waste water processing Download PDFInfo
- Publication number
- CN109293030A CN109293030A CN201811318219.0A CN201811318219A CN109293030A CN 109293030 A CN109293030 A CN 109293030A CN 201811318219 A CN201811318219 A CN 201811318219A CN 109293030 A CN109293030 A CN 109293030A
- Authority
- CN
- China
- Prior art keywords
- centrifugal extractor
- valve
- extractor
- extractant
- extracting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The present invention provides a kind of extracting and dephenolizing devices for coal chemical industrial waste water processing comprising static mixer, mixed settler extractor and multiple centrifugal extractors；Wherein, the outlet of the entrance of mixed settler extractor and static mixer；The material liquid entrance of first order centrifugal extractor is connected to the raffinate outlet of mixed settler extractor；The extract liquor outlet of first order centrifugal extractor is connected to via pipeline with the extractant entrance of static mixer；It is countercurrently connected between each centrifugal extractor；At least one centrifugal extractor is equipped with the first material liquid inlet valve and the first raffinate outlet valve, and the first bypass being connected to is equipped on the outside of them；At least one centrifugal extractor is equipped with the second extractant inlet valve and the second extract liquor outlet valve, and the second bypass being connected to is equipped on the outside of them；Valve is equipped with first bypass and the second bypass.The present invention also provides a kind of method for extracting and dephenolizing for coal chemical industrial waste water processing.
Description
Technical field
The invention belongs to coal chemical industrial waste water process fields, gasify more particularly to one kind for coal chemical industrial waste water such as broken coal and give up
The extracting and dephenolizing device and method for extracting and dephenolizing of water process.
Background technique
Broken coal gasification technology generates a large amount of organic wastewater containing phenol in industrial application, which, which generally goes through, removes
Oil, depickling, the processing of deamination process are recycled subsequently into dephenolize device by extraction, the recycling of solvent stripping, phenol rectifying, final to return
Receipts obtain certain density phenol wastewater, and phenol wastewater is typically sent to biochemical process and is further processed to recycle.
Mixing-defecator and packed extraction tower combination extraction and centrifugal extractor series connection cross current solvent extraction are generallyd use at present
Method carry out dephenolize.
In the case where same treatment amount and treatment effect, the price of packed extraction tower and its filler is with respect to centrifugal extractor
Height, and the impurity such as oil, coal dust contained in coal gasification waste water can be sticked to filler surface, easily cause filler extraction tower packing stifled
Plug reduces extraction efficiency.In addition, if coal gasification waste water, which is met under temperature is higher or the incomplete situation of oil removing, to be emulsified
Phenomenon and make packed extraction tower can not separating and extracting phase and raffinate phase.As phenol wastewater pH >=8.5, the extraction of packed extraction tower
Efficiency decline is larger, when especially being operated under the process conditions for the treatment of capacity frequent fluctuation and excess load, the extraction of packed extraction tower
Take efficiency that can reduce.
Centrifugal extractor is connected the high-efficient of cross current solvent extraction, but consumes that extraction dosage is big, at present frequently with it is multistage from
The processing capacity of heart extracter generally only has tens cubic metres per hour, and multistage centrifugal machine is expensive, is difficult to meet large-scale
The needs of coal chemical engineering equipment production.
Summary of the invention
Therefore, the purpose of the present invention is to for the defect in the presence of the prior art, especially because of above-mentioned reason caused by
The problem of existing apparatus extraction efficiency declines provides a kind of extracting and dephenolizing device and extracting and dephenolizing for coal chemical industrial waste water processing
Method.
The purpose of the present invention is what is be achieved through the following technical solutions.
Mixing clarification extraction equipment and Duo Tai single stage centrifugal extractor are applied in combination to give up to by coal chemical industry by the present inventor
The phenol wastewater that water obtains is handled, wherein mixing clarification extraction equipment setting is in preceding, more single stage centrifugal extractor settings
Rear, phenol wastewater and extractant are in mixing clarification extraction equipment and Duo Tai single stage centrifugal extractor counter current contacting mode on the whole
Connection.During processing, the present inventor surprisingly, it is found that, by be arranged such not only realize high extraction efficiency,
And there is high processing capacity, stable, Solvent quantity is small.
On the one hand, the present invention provides a kind of extracting and dephenolizing devices for coal chemical industrial waste water processing, wherein the extraction
Dephenolize device includes static mixer, mixed settler extractor and multiple centrifugal extractors；Wherein:
The static mixer has material liquid entrance, extractant entrance and exit；
The entrance of the mixed settler extractor via pipeline and the static mixer outlet；
The material liquid entrance of the first order centrifugal extractor of the multiple centrifugal extractor via pipeline with it is described mix it is clear
The raffinate outlet connection of clear extraction tank；The first order centrifugal extractor of the multiple centrifugal extractor extract liquor outlet via
Pipeline is connected to the extractant entrance of the static mixer；Other than afterbody centrifugal extractor, the multiple centrifugation
The raffinate outlet of each centrifugal extractor in extracter is connected to the material liquid entrance of its next stage centrifugal extractor；In addition to
Except first order centrifugal extractor, the extract liquor outlet and thereon one of each centrifugal extractor in the multiple centrifugal extractor
The extractant entrance connection of grade centrifugal extractor；
At least one centrifugal extractor in the multiple centrifugal extractor is equipped with the first material liquid inlet valve and first
Raffinate outlet valve, and set before the first material liquid inlet valve and after the first raffinate outlet valve
There is the first bypass for being connected to them；
At least one centrifugal extractor in the multiple centrifugal extractor is equipped with the second extractant inlet valve and second
Extract liquor outlet valve, and set before the second extractant inlet valve and after the second extract liquor outlet valve
There is the second bypass for being connected to them；With
First bypass and the second bypass are equipped with valve.
In the present invention, the centrifugal extractors at different levels in the multiple centrifugal extractor be according to the flow direction of phenol wastewater successively
Label.Similarly, term " before " employed in the present invention and " before " that material flows through the valve is respectively referred to " later "
" later ".
The extracting and dephenolizing device provided according to the present invention, wherein the material liquid entrance of the static mixer is equipped with first
Valve.
The extracting and dephenolizing device provided according to the present invention, wherein each of the multiple centrifugal extractor is equipped with
First material liquid inlet valve and the first raffinate outlet valve, and extract before its first material liquid inlet valve with first
The first bypass for being connected to them is equipped with after extraction raffinate outlet valve；Each of the multiple centrifugal extractor is all provided with
There are the second extractant inlet valve and the second extract liquor outlet valve, and before its second extractant inlet valve and second
The second bypass for being connected to them is equipped with after extract liquor outlet valve；It is equipped with first bypass and the second bypass
Valve.
The extracting and dephenolizing device provided according to the present invention, wherein the outlet of the static mixer connects via tap line
It is connected to the first material liquid inlet valve of the first order centrifugal extractor of the multiple centrifugal extractor, to enter with its material liquid
Mouthful connection, and connect the of the outlet of the static mixer and the first order centrifugal extractor of the multiple centrifugal extractor
The tap line of one material liquid inlet valve is equipped with the 4th valve and the extractant entrance of the mixed settler extractor is set
There is the 5th valve.
In the present invention, the static mixer also is provided with tap line, and then when waste water generation in mixed settler extractor
When emulsification (after emulsification, mixed settler extractor can not separate two-phase), material walks tap line, and mixed settler extractor is isolated
Out.
The extracting and dephenolizing device provided according to the present invention, wherein the centrifugal extractor is the extraction of CTL type one-stage centrifugal
Machine.
The extracting and dephenolizing device provided according to the present invention, wherein can be according to horizontal (the dephenolize effect of the desired processing reached
Rate) confirmation centrifugal extractor quantity, do not limited by quantity shown in attached drawing.In some embodiments, it is described from
The quantity of heart extracter is 3~8, is in some embodiments 3~5, and is in some embodiments 4.
The extracting and dephenolizing device provided according to the present invention, wherein the draw ratio of the static mixer is 6~10, such as
7.In some embodiments, the static mixer is SV type static mixer.
In the present invention, term " CTL type centrifugal extractor ", " CTL type single stage centrifugal extractor " are total according to the Chinese people
With state's machinery industry standard " centrifugal extractor model preparation method " (JB/T7243-2010) name, wherein C indicates centrifugation extraction
Machine is taken, T indicates that core structure, L indicate the structure of stirring wheel-type.
Term " SV type static mixer " is according to People's Republic of China's machinery industry standard " static mixer " (JB/
T7660-2016 it) names, wherein S represents mixer, and V represents the cell geometry form of filler in static mixer.
The extracting and dephenolizing device provided according to the present invention, wherein the extracting and dephenolizing device further includes phenol tower, the mixing
The extract liquor outlet of settler extractor is connected to via pipeline with phenol tower.In some embodiments, the mixed settler extractor
Extract liquor exit be equipped with the 6th valve.
The extracting and dephenolizing device provided according to the present invention, wherein the first order Centrifugical extraction of the multiple centrifugal extractor
The extract liquor outlet of machine is connected to via tap line with phenol tower, which is equipped with the second valve, and described static mixed
The extractant entrance of clutch is equipped with third valve.
The extracting and dephenolizing device provided according to the present invention, wherein the extracting and dephenolizing device further includes for described more
A centrifugal extractor provides the extractant circulating slot of extractant, wherein the entrance of the extractant circulating slot is via pipeline and institute
The connection of phenol tower is stated, the outlet of the extractant circulating slot is centrifuged via the afterbody in pipeline and the multiple centrifugal extractor
The extractant entrance of extracter is connected to.
The extracting and dephenolizing device provided according to the present invention, wherein the mixed settler extractor bottom is equipped with for being discharged
Impurity leads leaching.
The extracting and dephenolizing device provided according to the present invention, wherein the extracting and dephenolizing device further includes solvent stripping recycling
Device, the solvent strip recyclable device via the extraction of pipeline and the afterbody centrifugal extractor of the multiple centrifugal extractor
Extraction raffinate outlet.
The extracting and dephenolizing device provided according to the present invention, wherein the extracting and dephenolizing device further includes for that will come from institute
The material for stating the raffinate outlet of mixed settler extractor is sent to the first order centrifugal extractor of the multiple centrifugal extractor
First feed pump of material liquid entrance and extractant for by extractant for example from the extractant circulating slot are sent to institute
State the second feed pump of the extractant entrance of the afterbody centrifugal extractor of multiple centrifugal extractors.
On the other hand, the present invention provides a kind of method for extracting and dephenolizing for coal chemical industrial waste water processing, the extraction is de-
Phenol method is carried out using the extracting and dephenolizing device, wherein the method for extracting and dephenolizing the following steps are included:
(1) phenol wastewater is sent into the material liquid entrance of static mixer, so that the phenol wastewater is described static mixed
It is mixed in clutch with the extract liquor from multiple centrifugal extractors；
(2) extractant is sent to the extractant entrance of the afterbody centrifugal extractor of the multiple centrifugal extractor；With
(3) the first material liquid inlet valve, the first raffinate outlet valve, the second extractant inlet valve, second are controlled
Valve on extract liquor outlet valve and the first bypass and the second bypass adjusts the phenol wastewater and the extractant
Circulation path.
In the present invention, the phenol wastewater refers to coal chemical industrial waste water such as broken coal gasification waste water by oil removing, depickling, at deamination
Waste water obtained after reason.Oil removing, depickling and deamination processing can be using conventional means in this field.
The method for extracting and dephenolizing provided according to the present invention, wherein pH≤10.5 of the phenol wastewater, preferably 6~
10.5, more preferably 8.5~10.5；Unit phenol content is preferably 3000~6000mg/L in the phenol wastewater, and polyphenol contains
Amount is preferably 1000~2000mg/L.
The method for extracting and dephenolizing provided according to the present invention, wherein can select can be with phenolic compound especially unit
The extractant of complex reaction occurs for phenol, dihydric phenol and polyphenol.The extractant of such as Di Iso Propyl Ether can be (useless with material liquid
Water) in phenolic compound (such as unit phenol, dihydric phenol or polyphenol) react, stable complex compound is generated, due to density
The presence of difference forms the extract liquor for mainly containing a large amount of extractants and phenolic compound and contains under the influence of centrifugal force
The raffinate of a small amount of extractant and phenolic compound, such phenolic compound and waste water are separated.
In some embodiments, the extractant is Di Iso Propyl Ether and/or methyl iso-butyl ketone (MIBK).
The method for extracting and dephenolizing provided according to the present invention, wherein the volume ratio of the extractant and the phenol wastewater is
1:2~10, preferably 1:5~8.
The method for extracting and dephenolizing provided according to the present invention, wherein enter the temperature of the raffinate of each centrifugal extractor
≤ 40 DEG C, preferably 10~40 DEG C, more preferably 20~40 DEG C.
The method for extracting and dephenolizing provided according to the present invention, wherein the pressure of raffinate for entering the centrifugal extractor is
0.1~0.15MPa.
The method for extracting and dephenolizing provided according to the present invention, wherein temperature≤60 DEG C in the mixed settler extractor, it is excellent
It is selected as 10~40 DEG C, more preferably 20~40 DEG C.
The method for extracting and dephenolizing provided according to the present invention, wherein the revolving speed of the centrifugal extractor is 650~750 revs/min
Clock, separation factor are 300~400, and residence time of each stock material in each centrifugal extractor into each centrifugal extractor is 5
~10 seconds.
The method for extracting and dephenolizing provided according to the present invention, wherein the method also includes following steps: (4) are clear when mixing
When emulsifying in clear extraction tank, the second valve and the 4th valve are opened, closes third valve, the 5th valve and the 6th valve,
Stop the first feed pump, so that the phenol wastewater into static mixer is directly entered multiple centrifugal extractors, and comes from institute
The extract liquor for stating multiple centrifugal extractors is sent to phenol tower.
Compared with prior art, the invention has the following advantages that
(1) in extracting and dephenolizing device provided by the invention, mixing clarification extraction equipment (static mixer and mixing clarification extraction
Take slot) it is applied in combination with multiple centrifugal extractors, mixing clarification extraction equipment is set in preceding and more CTL type single stage centrifugal extractor
Set rear, be arranged so and can achieve following effect: (a) as extraction series increases, extraction efficiency is usually gradually reduced.Mixing
The efficiency that extraction efficiency is lower than Centrifugical extraction is clarified, but device price is higher than centrifugal extractor, mixing clarification extraction equipment setting
Its extraction function can be played to the maximum extent before, while reducing equipment cost.Particularly, it for identical treating capacity, mixes
Clarifying extraction equipment cost is less than packed extraction tower 1/5th are closed, and centrifugal extractor equipment cost is less than packed extraction tower
One third；(b) content of tar and coal dust is high in the phenol wastewater that broken coal gasification process generates, as a result cause it is multistage from
Scheming efficiency reduces；And in the present invention, through mixing clarification extraction equipment other than with certain extraction, pass through sedimentation
Processing, reduces the solid impurities content such as the tar that may contain in waste water, coal dust, can be by setting in mixing clarification extraction
Impurity is discharged for the leaching of leading of trench bottom, improves the clean level of material liquid, and then improve the efficiency of Centrifugical extraction.
Mixing clarification extraction equipment, especially mixed settler extractor also simultaneously has storage, buffer function, and by
First feed pump can make waste water (raffinate) enter centrifugal extractor with stable flow and pressure, and then avoid because of broken coal gas
Change generate wastewater flow it is unstable and frequently change inlet amount and cause centrifugal extractor extraction efficiency reduce the problem of, and by
This guarantees device stable operation.The extraction efficiency for improving centrifugal extractor can also be played by reducing impurity content and stablizing inlet amount
Effect.Specifically, extraction efficiency is evaluated using centrifuge separation factor, the calculation formula for being centrifugated factor is Fr=R
ω2/ g, wherein Fr is centrifuge separation factor, and R is radius, and ω is angular speed, and g is acceleration of gravity.It follows that centrifugation extraction
Machine revolving speed is taken to influence two-phase laminated flow effect, and flow of inlet water influences the revolving speed of centrifugal extractor.Mixing clarification extraction in the present invention
Slot also act as buffering centrifugal extractor water inlet effect, stabilize centrifugal extractor intake pressure and flow, so as to avoid because
The problem of two-phase laminated flow efficiency caused by pressure and flowed fluctuation reduces.
(2) in the present invention, at least one (or each) centrifugal extractor is equipped with the first bypass and the second bypass, such
Waste water (raffinate) and extractant (extract liquor) can be selectively sent into centrifugal extractor by bypass setting or it bypasses (the
One bypass and the second bypass), and then the flow of centrifugal extractor is adjusted, the usage quantity for reducing or increasing centrifugal extractor comes
The extraction series of practical operation is controlled, to select, control effect of extracting.Enter in addition, such bypass can be also used for adjusting
The extract liquor and raffinate flow of corresponding centrifugal extractor, adjust, while being also convenient for maintenance down convenient for flow, set in maintenance
When standby, the valve being arranged in the first bypass and the second bypass need to be only opened respectively, closes each inlet and outlet of centrifugal extractor
The valve at place, and then the centrifugal extractor of Awaiting Overhaul is isolated from except device, without the normal of arresting stop rest part
Operation.In addition, the tap line being arranged on static mixer also has similar function and effect.
(3) centrifugal extractor is commonly used in the fields such as medicine, food, metallurgy in the lesser technique for the treatment of capacity, and does not have to
In the Shandong surprise phenolic wastewater in smashed coal pressure gasification that processing easily emulsifies.Apparatus of the present invention have high extraction efficiency and processing capacity,
CTL type single stage centrifugal extractor is especially selected, extraction processing amount is in 100m3/ h or more.In addition, apparatus of the present invention are using adverse current
Mode is both guaranteeing to reach desired extraction efficiency, while also reducing the dosage of extractant.
(4) with the increase of phenol wastewater pH, the degree that phenol dissociates in water usually increases, the extraction effect of extractant
Rate reduces, and then the extraction efficiency of packed extraction tower is caused to reduce.Packed extraction tower can only generally handle pH less than 8.5 as a result,
Waste water be difficult to handle if pH is too high.Compared with using the scheme of packed extraction tower, apparatus and method of the present invention can
To handle the phenol wastewater that pH is 8.5~10.5.For example, under conditions of the volume ratio of extractant and phenol wastewater is 1:6, when
When the pH of phenol wastewater≤8, after the extraction of level Four centrifugal extractor counterflow centrifugal, the total phenol rate of recovery is not less than 94%；When containing
It when the pH of phenol waste water is 8-10.5, is extracted through inverse level Four centrifugal extractor counterflow centrifugal, the total phenol rate of recovery is not less than 90%.
(5) apparatus and method of the present invention can overcome existing with " depickling-deamination-mixing clarification extraction-packed tower extraction
Take-rectifying dephenolize " be technical process technical deficiency, extraction efficiency is high, and extraction is stablized.Apparatus and method of the present invention can
Phenol wastewater caused by the gasification furnace of broken coal gasification principle is utilized with lurgi gasifier, the match ancient cooking vessel furnace etc. for processing, passes through centrifugation
The phenolic compound in broken coal gasification waste water is effectively separated in power and gravitational settling.The present invention can be used as broken coal gasification waste water
The technique of extracting and dephenolizing is applied in natural gas from coal, coal synthesis ammonia, the technique of coal coal gas combined production of methanol.
Detailed description of the invention
Hereinafter, carrying out the embodiment that the present invention will be described in detail in conjunction with attached drawing, in which:
Fig. 1 is a kind of schematic diagram of embodiment of extracting and dephenolizing device according to the present invention；With
Fig. 2 is the schematic diagram of the another embodiment of extracting and dephenolizing device according to the present invention.
Specific embodiment
The present invention is further described in detail With reference to embodiment, and the embodiment provided is only for explaining
The bright present invention, the range being not intended to be limiting of the invention.
Embodiment 1
Fig. 1 shows a kind of extracting and dephenolizing device for coal chemical industrial waste water processing.The extracting and dephenolizing device includes 4
Centrifugal extractor --- first order CTL type single stage centrifugal extractor 1, second level CTL type single stage centrifugal extractor 2, third level CTL
Type single stage centrifugal extractor 3 and fourth stage CTL type single stage centrifugal extractor 4, SV type static mixer 8, mixed settler extractor
7, extractant circulating slot 5, the first feed pump 6 and the second feed pump 9.
SV type static mixer 8 has material liquid entrance, the extractant entrance and exit for receiving phenol wastewater, former
Feed liquid port is connected to feeding line 11, and feeding line 11 is equipped with the first valve a, and extractant inlet is equipped with third valve c.
The outlet of SV type static mixer 8 is connected to via pipeline with the entrance of mixed settler extractor 7, the extraction of SV type static mixer 8
Agent entrance is taken to be connected to via pipeline with the extract liquor of first order CTL type single stage centrifugal extractor 1 outlet S4.
The raffinate outlet of mixed settler extractor 7 is connected to the entrance of the first feed pump 6, the first feed pump via pipeline
6 outlet is connected to the material liquid entrance S1 of first order CTL type single stage centrifugal extractor 1 via pipeline, and the first feed pump 6 is equipped with
Pump discharge valve.The extract liquor outlet of mixed settler extractor 7 is connected to via pipeline with phenol tower (not shown).Mixing clarification extraction
Slot 7 is equipped with the 5th valve e in its entrance, and extract liquor exit is equipped with the 6th valve f.The bottom of mixed settler extractor 7 is also set
Have and leads leaching (not shown) for be discharged impurity.
The raffinate outlet S2 of first order CTL type single stage centrifugal extractor 1 is via pipeline and second level CTL type one-stage centrifugal
The material liquid entrance of extracter 2 is connected to, extractant entrance S3 and the second level CTL type of first order CTL type single stage centrifugal extractor 1
The extract liquor outlet of single stage centrifugal extractor 2.Second level CTL type single stage centrifugal extractor 2 and third level CTL type single-stage from
Between heart extracter 3 and between third level CTL type single stage centrifugal extractor 3 and fourth stage CTL type single stage centrifugal extractor 4 with
Identical mode connects.SV type static mixer 8, mixed settler extractor 7, first order CTL type single stage centrifugal extractor as a result,
1, second level CTL type single stage centrifugal extractor 2, third level CTL type single stage centrifugal extractor 3 and fourth stage CTL type one-stage centrifugal
Extracter 4 is arranged in adverse current.
The extractant entrance of fourth stage CTL type single stage centrifugal extractor 4 connects via the outlet of pipeline and the second feed pump 9
It is logical, the entrance of the second feed pump 9 via pipeline and extractant circulating slot 5 outlet.
The entrance of extractant circulating slot 5 is connected to via extractant pipeline 13 with phenol tower (not shown), to receive extractant.?
Pipeline between the outlet of the extractant entrance and the second feed pump 9 of fourth stage CTL type single stage centrifugal extractor 4 is equipped with automatic
Control valve FIC001, for controlling the flow that extractant enters fourth stage CTL type single stage centrifugal extractor 4.
It is recycled via raffinate pipeline 12 and solvent stripping the extract liquor outlet of fourth stage CTL type single stage centrifugal extractor 4
Extract liquor is sent to solvent stripping recyclable device and is recycled by the connection of device (not shown).
For each CTL type single stage centrifugal extractor, it is equipped with the first material liquid inlet valve and the first raffinate outlet
Valve is equipped with by be connected to them first in the outside of its first material liquid inlet valve and the first raffinate outlet valve
Road, the first bypass are equipped with valve.As a result, by the first material liquid inlet valve, by the first raffinate outlet valve and first
The unlatching and/or closing of the valve of road can control material (raffinate) and flow through the CTL type single stage centrifugal extractor, still
Recyclable device is directly stripped to enter next stage CTL type single stage centrifugal extractor or send to solvent by the first bypass.
Similarly, for each CTL type single stage centrifugal extractor, also all the second extractant inlet valve and the second extract liquor
Outlet valve is equipped be connected to them second in the outside of its second extractant inlet valve and the second extract liquor outlet valve
Bypass, the second bypass are equipped with valve.Pass through the second extractant inlet valve, the second extract liquor outlet valve and second as a result,
The unlatching and/or closing of valve in bypass can control material (extract liquor) and flow through the CTL type single stage centrifugal extractor, also
It is directly by the second bypass to enter upper level CTL type single stage centrifugal extractor or SV type static mixer 8.
When operation, firstly, opening adjusting valve door a, by the coal chemical industrial waste water obtained after oil removing, depickling, deamination processing, (depickling is de-
Ammonia waste water or phenol wastewater) via the feeding SV type static mixer 8 of feeding line 11, pass through SV type static mixer 8 and mixing
Settler extractor 7 carries out mixed once clarification extraction (also referred to as pre-extracted processing), and obtained mixed liquor is in mixing clarification extraction
Static layering in slot 7, lower layer are raffinates, and upper layer is extract liquor.
Raffinate enters first order CTL type single stage centrifugal extractor 1 by material liquid entrance S1 through the first feed pump 6, extraction
Hydrorrhea stream enters phenol tower.The flow of entered phenol wastewater can be controlled by the first valve a.Every CTL type one-stage centrifugal
The valve installed in each inlet and outlet of extracter also can control the flow for passing in and out the material of the centrifuge.
In first order CTL type single stage centrifugal extractor 1, raffinate is collected in its heavy phase collecting chamber, is gone out by raffinate
Mouth S2 discharge, send through pipeline to the material liquid entrance of second level CTL type single stage centrifugal extractor 2.Finally, raffinate is from the fourth stage
The raffinate outlet of CTL type single stage centrifugal extractor 4 leaves, and is transported to steam stripping tower recycling dress via raffinate pipeline 12
It sets to recycle extractant, finally enters biochemical process processing.The extractant of recycling is followed via extractant pipeline 13 into extractant
Ring storage tank 5 is to recycle.
In fourth stage CTL type single stage centrifugal extractor 4, extract liquor is collected in its light phase collecting chamber, is gone out by extract liquor
Mouth discharge is sent through pipeline to the extractant entrance of third level CTL type single stage centrifugal extractor 3.Finally, extract liquor is from first order CTL
The extract liquor outlet S4 of type single stage centrifugal extractor 1 leaves, and send via pipeline to the extractant entrance of SV type static mixer 8,
It is mixed in SV type static mixer 8 with phenol wastewater, enters back into mixed settler extractor 7, it is static to isolate two-phase.It mixes clear
Extract liquor enters phenol tower via extract liquor outlet overflows and via extract liquor pipeline 14 in clear extraction tank 7, to isolate phenol generalization
Close object and extractant.
When needing to be isolated CTL type single stage centrifugal extractor or reducing extraction series, it is all to close the centrifugal extractor
Exits and entrances valve (the first material liquid inlet valve, the first raffinate outlet valve, the second extractant inlet valve and the second extraction
Liquid outlet valve), the valve in the first bypass and the second bypass is opened, extracts two strands of materials without the CTL type one-stage centrifugal
Machine is taken, and passes through its corresponding first bypass and the second bypass.
Embodiment 2
Fig. 2 shows that the extracting and dephenolizing device for coal chemical industrial waste water processing, the device have institute described in embodiment 1
There is structure.
As shown in Fig. 2, the outlet of SV type static mixer 8 is connected to first order CTL type one-stage centrifugal via tap line
First material liquid inlet valve of extracter 1 so that the outlet of SV type static mixer 8 and first order CTL type single-stage from
The material liquid entrance S1 of heart extracter 1 is connected to.Meanwhile the outlet of SV type static mixer 8 and the first material liquid inlet valve it
Between tap line be equipped with the 4th valve d.
In addition, by the tap line equipped with the second valve b by the extraction from first order CTL type single stage centrifugal extractor 1
It takes liquid to be sent to phenol tower to be handled.
When phenol wastewater emulsifies in mixed settler extractor 7, phenol wastewater cannot be re-fed into mixed settler extractor 7,
Extract liquor cannot enter back into SV type static mixer 8.At this point, the second valve b and the 4th valve d is opened, closing third valve c,
5th valve e and the 6th valve f stops the first feed pump 6, and closes pump discharge valve, and it is mixed that phenol wastewater enters SV type static state
After clutch 8, enter first order CTL type single stage centrifugal extractor 1 via the tap line for being equipped with the 4th valve d, comes from first
The extract liquor of grade CTL type single stage centrifugal extractor 1 enters phenol tower by being equipped with the tap line of the second valve b.
Embodiment 3
Depickling deamination waste water (phenol wastewater) is handled using the device of embodiment 2.
The phenol wastewater (depickling deamination waste water) that coal gasification waste water obtains after oil removing, depickling, deamination processing.It is useless containing phenol
Unit phenol content is 3100mg/L in water, and the content of polyphenol (dihydric phenol and trihydric phenol) is 1200mg/L, pH 6.5, temperature
It is 40 DEG C.
In 100m3Phenol wastewater is sent into SV type static mixer 8 under the flow of/h, by controlling each valve, is made containing phenol
Waste water is followed by SV type static mixer 8, mixed settler extractor 7, first order CTL type single stage centrifugal extractor 1, the second level
CTL type single stage centrifugal extractor 2, third level CTL type single stage centrifugal extractor 3 and fourth stage CTL type single stage centrifugal extractor 4 into
Row processing, finally send to solvent and strips recyclable device.Wherein, the design pressure of mixed settler extractor 7 is 1MPa, design temperature
70 DEG C, nominal volume 180m3；CTL type single stage centrifugal extractor is drum-type, and motor is variable-frequency motor, power of motor 45kW,
Revolving speed is 730 revs/min, separation factor 300-400, residence time of material about 8 seconds.Phenol wastewater enter each CTL type single-stage from
The temperature of heart extracter is 35~40 DEG C, and pressure is controlled in 0.1~0.15MPa.
Select the Di Iso Propyl Ether that mass fraction is 99.9% as extractant, into CTL type single stage centrifugal extractor
Temperature is room temperature, pressure 0.25MPa.The volume ratio of extractant and phenol wastewater is 1:6.
Use the extraction of bromination volumetric method (standard No. HJ502-2009) measurement fourth stage CTL type single stage centrifugal extractor 4
The content of total phenol in extraction raffinate, value 253mg/L.By calculating the total phenol rate of recovery compared with total phenol content in phenol wastewater,
Value is 94.1%.
It is 700mg/L that common process, which requires raffinate phase waste water total phenol content after extraction, this technique can be by raffinate phase waste water
Total phenol content is down to 253mg/L.It was calculated according to year runing time 8000 hours, present invention process can produce crude phenols (matter more every year
Measure concentration 92%) about 390 tons, it is calculated according to 3900 yuan/ton of crude phenols market price (containing tax), income from sales 1,520,000 will be increased every year
Member.
Embodiment 4
Depickling deamination waste water (phenol wastewater) is handled using the device of embodiment 2.
The phenol wastewater (depickling deamination waste water) that coal gasification waste water obtains after oil removing, depickling, deamination processing.It is useless containing phenol
Unit phenol content is 4200mg/L in water, and the content of polyphenol (dihydric phenol and trihydric phenol) is 1950mg/L, pH 10.13, temperature
Degree is 40 DEG C.
In 115m3Phenol wastewater is sent into SV type static mixer 8 under the flow of/h, by controlling each valve, make its according to
It is secondary flow through SV type static mixer 8, mixed settler extractor 7, the first feed pump 6, first order CTL type single stage centrifugal extractor 1,
Second level CTL type single stage centrifugal extractor 2, third level CTL type single stage centrifugal extractor 3 and fourth stage CTL type one-stage centrifugal extraction
It takes machine 4 to be handled, finally send to solvent and strip recyclable device.Wherein, the design pressure of mixed settler extractor 7 is 1MPa,
70 DEG C of design temperature, nominal volume 180m3；CTL type single stage centrifugal extractor is drum-type, and motor is variable-frequency motor, motor
Power 45kW, revolving speed are 680 revs/min, separation factor 300-400, residence time of material about 9 seconds.Phenol wastewater enters each CTL
The temperature of type single stage centrifugal extractor is 35~40 DEG C, and pressure is controlled in 0.1~0.15MPa.
Select the Di Iso Propyl Ether that mass fraction is 99.9% as extractant, into CTL type single stage centrifugal extractor
Temperature is room temperature, pressure 0.25MPa.The volume ratio of extractant and phenol wastewater is 1:6.
Use the extraction of bromination volumetric method (standard No. HJ502-2009) measurement fourth stage CTL type single stage centrifugal extractor 4
The content of total phenol in extraction raffinate, value 296mg/L.By calculating the total phenol rate of recovery compared with total phenol content in phenol wastewater,
Value is 95.2%.
Claims (10)
1. a kind of extracting and dephenolizing device for coal chemical industrial waste water processing, wherein the extracting and dephenolizing device includes static mixing
Device (8), mixed settler extractor (7) and multiple centrifugal extractors；Wherein:
The static mixer (8) has material liquid entrance, extractant entrance and exit；
The entrance of the mixed settler extractor (7) via pipeline and the static mixer (8) outlet；
The material liquid entrance (S1) of the first order centrifugal extractor of the multiple centrifugal extractor via pipeline with it is described mix it is clear
The raffinate outlet connection of clear extraction tank (7)；The extract liquor of the first order centrifugal extractor of the multiple centrifugal extractor exports
(S4) it is connected to via pipeline with the extractant entrance of the static mixer (8)；Other than afterbody centrifugal extractor, institute
The material liquid for stating the raffinate outlet and its next stage centrifugal extractor of each centrifugal extractor in multiple centrifugal extractors enters
Mouth connection；Other than first order centrifugal extractor, the extract liquor of each centrifugal extractor in the multiple centrifugal extractor
Outlet is connected to the extractant entrance of first-stage centrifugal extracter thereon；
At least one centrifugal extractor in the multiple centrifugal extractor is equipped with the first material liquid inlet valve and the first raffinate
Liquid outlet valve, and being equipped with before the first material liquid inlet valve and after the first raffinate outlet valve will
The first bypass that they are connected to；
At least one centrifugal extractor in the multiple centrifugal extractor is equipped with the second extractant inlet valve and the second extraction
Liquid outlet valve, and being equipped with before the second extractant inlet valve and after the second extract liquor outlet valve will
The second bypass that they are connected to；With
First bypass and the second bypass are equipped with valve.
2. extracting and dephenolizing device according to claim 1, wherein each of the multiple centrifugal extractor is equipped with
First material liquid inlet valve and the first raffinate outlet valve, and extract before its first material liquid inlet valve with first
The first bypass for being connected to them is equipped with after extraction raffinate outlet valve；Each of the multiple centrifugal extractor is equal
Equipped with the second extractant inlet valve and the second extract liquor outlet valve, and before its second extractant inlet valve and the
The second bypass for being connected to them is equipped with after two extract liquor outlet valves；It is set in first bypass and the second bypass
There is valve；
Preferably, the outlet of the static mixer (8) is connected to the first of the multiple centrifugal extractor via tap line
First material liquid inlet valve of grade centrifugal extractor, to be connected to its material liquid entrance (S1), and connects the static state
The branch of first material liquid inlet valve of the first order centrifugal extractor of the outlet and the multiple centrifugal extractor of mixer (8)
Road pipeline is equipped with the 4th valve (d) and the extractant entrance of the mixed settler extractor (7) is equipped with the 5th valve (e).
3. extracting and dephenolizing device according to claim 1 or 2, wherein the centrifugal extractor is CTL type one-stage centrifugal extraction
Take machine；
Preferably, the quantity of the centrifugal extractor is 3~8, preferably 3~5, such as 4；
Preferably, the draw ratio of the static mixer (8) is 6~10, such as 7；It is highly preferred that the static mixer (8)
For SV type static mixer.
4. extracting and dephenolizing device according to any one of claim 1 to 3, wherein the extracting and dephenolizing device further includes
The extract liquor outlet of phenol tower, the mixed settler extractor (7) is connected to via pipeline with phenol tower；
Preferably, the extract liquor exit of the mixed settler extractor (7) is equipped with the 6th valve (e)；
Preferably, the extract liquor of the first order centrifugal extractor of the multiple centrifugal extractor is exported via tap line and phenol tower
Connection, which is equipped with the second valve (b), and the extractant entrance of the static mixer (8) is equipped with third valve
Door (c)；
Preferably, the extracting and dephenolizing device further includes that the extractant for providing extractant to the multiple centrifugal extractor follows
Annular groove (5), wherein the entrance of the extractant circulating slot (5) is connected to via pipeline with the phenol tower, the extractant circulating slot
(5) outlet is connected to via pipeline with the extractant entrance of the afterbody centrifugal extractor in the multiple centrifugal extractor.
5. extracting and dephenolizing device according to any one of claim 1 to 4, wherein the extracting and dephenolizing device further includes
Solvent strips recyclable device, solvent stripping recyclable device via the afterbody of pipeline and the multiple centrifugal extractor from
The raffinate outlet of heart extracter is connected to.
6. extracting and dephenolizing device according to any one of claim 1 to 5, wherein the extracting and dephenolizing device further includes
For sending the material for coming from the raffinate outlet of the mixed settler extractor (7) to the first of the multiple centrifugal extractor
Grade centrifugal extractor material liquid entrance (S1) the first feed pump (6) and for by extractant for example from the extractant
The extractant of circulating slot (5) send second of the extractant entrance to the afterbody centrifugal extractor of the multiple centrifugal extractor
Feed pump (9).
7. a kind of method for extracting and dephenolizing for coal chemical industrial waste water processing, the method for extracting and dephenolizing is using in claim 1 to 6
Described in any item extracting and dephenolizing devices carry out, wherein the method for extracting and dephenolizing the following steps are included:
(1) phenol wastewater is sent into the material liquid entrance of static mixer (8), so that the phenol wastewater is in the static mixing
Device mixes in (8) with the extract liquor from multiple centrifugal extractors；
(2) extractant is sent to the extractant entrance of the afterbody centrifugal extractor of the multiple centrifugal extractor；With
(3) the first material liquid inlet valve, the first raffinate outlet valve, the second extractant inlet valve, the second extraction are controlled
Liquid outlet valve and the first bypass adjust the circulation of the phenol wastewater and the extractant with the valve in the second bypass
Path.
8. method for extracting and dephenolizing according to claim 7, wherein pH≤10.5 of the phenol wastewater, preferably 6~
10.5, more preferably 8.5~10.5；Unit phenol content is preferably 3000~6000mg/L in the phenol wastewater, and polyphenol contains
Amount is preferably 1000~2000mg/L；
Preferably, the extractant is Di Iso Propyl Ether and/or methyl iso-butyl ketone (MIBK)；
Preferably, the volume ratio of the extractant and the phenol wastewater is 1:2~10, preferably 1:5~8.
9. method for extracting and dephenolizing according to claim 7 or 8, wherein enter the temperature of the raffinate of each centrifugal extractor
≤ 40 DEG C, preferably 10~40 DEG C, more preferably 20~40 DEG C；
It preferably, is 0.1~0.15MPa into the pressure of the raffinate of centrifugal extractor；
Preferably, temperature≤60 DEG C in the mixed settler extractor (7), preferably 10~40 DEG C, more preferably 20~40
℃；
Preferably, the revolving speed of the centrifugal extractor be 650~750 revs/min, separation factor be 300~400, into respectively from
Residence time of each stock material of heart extracter in each centrifugal extractor is 5~10 seconds.
10. method for extracting and dephenolizing according to any one of claims 7 to 9, wherein the method also includes following steps
It is rapid:
(4) when emulsifying in mixed settler extractor (7), the second valve (b) and the 4th valve (d) are opened, closes third
Valve (c), the 5th valve (e) and the 6th valve (f) stopped the first feed pump (6), so that containing into static mixer (8)
Phenol waste water is directly entered multiple centrifugal extractors, and the extract liquor from the multiple centrifugal extractor is sent to phenol tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318219.0A CN109293030A (en) | 2018-11-07 | 2018-11-07 | Extracting and dephenolizing device and method for extracting and dephenolizing for coal chemical industrial waste water processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318219.0A CN109293030A (en) | 2018-11-07 | 2018-11-07 | Extracting and dephenolizing device and method for extracting and dephenolizing for coal chemical industrial waste water processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109293030A true CN109293030A (en) | 2019-02-01 |
Family
ID=65145954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811318219.0A Pending CN109293030A (en) | 2018-11-07 | 2018-11-07 | Extracting and dephenolizing device and method for extracting and dephenolizing for coal chemical industrial waste water processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109293030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321292A (en) * | 2020-04-10 | 2020-06-23 | 厦门钨业股份有限公司 | Equipment and method for recovering extracting agent from raffinate |
| CN114210278A (en) * | 2021-11-19 | 2022-03-22 | 浙江耐司康药业有限公司 | Two-phase solution mixing reaction device and method |
| CN114307230A (en) * | 2021-12-30 | 2022-04-12 | 四川绿艺华福石化科技有限公司 | Extraction device with fault shielding and partition heating functions |
-
2018
- 2018-11-07 CN CN201811318219.0A patent/CN109293030A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321292A (en) * | 2020-04-10 | 2020-06-23 | 厦门钨业股份有限公司 | Equipment and method for recovering extracting agent from raffinate |
| CN114210278A (en) * | 2021-11-19 | 2022-03-22 | 浙江耐司康药业有限公司 | Two-phase solution mixing reaction device and method |
| CN114307230A (en) * | 2021-12-30 | 2022-04-12 | 四川绿艺华福石化科技有限公司 | Extraction device with fault shielding and partition heating functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109293030A (en) | Extracting and dephenolizing device and method for extracting and dephenolizing for coal chemical industrial waste water processing | |
| CN204564360U (en) | A kind of lily is leached, feed liquid is separated and centrifugal device | |
| CN209352652U (en) | A kind of extracting and dephenolizing device for coal chemical industrial waste water processing | |
| CN106630514A (en) | Treating system, separating apparatus and treating method for oily sludge | |
| CN106118703A (en) | A kind of coal tar pretreatment combination size system and method | |
| CN208562092U (en) | A kind of solid rapidly and efficiently modular device of novel grease | |
| CN203048889U (en) | Effluent oil recycling device for oil field | |
| CN104784967B (en) | One is the most adjustable level reflow type centrifugal extractor and a control method thereof | |
| CN209317065U (en) | A kind of ethylmaltol vacuum distillation apparatus reducing energy consumption | |
| CN207391504U (en) | The controllable Rapid Extraction neutral section of reaction efficiency | |
| CN204434559U (en) | One station, sledge-borne type ageing oil treatment unit | |
| CN106865674A (en) | A kind of method of the phenol wastewater extracting and dephenolizing of multistage mixed intensified separation | |
| CN206051947U (en) | A kind of coal tar pretreatment combination size system | |
| CN204564361U (en) | A kind of lily is leached, feed liquid is separated and concentrated device | |
| CN103111088B (en) | Complete equipment for extracting phenols in medium and low temperature coal tar | |
| CN102936664B (en) | Method for extracting rare earth elements | |
| CN107699689A (en) | The controllable Rapid Extraction neutral section of reaction efficiency and method | |
| CN110694341B (en) | Device and process for treating hydrolysate of hydrogen-containing silicone oil | |
| CN206417995U (en) | A kind of disposal of oily sludge system | |
| CN205627185U (en) | Kitchen garbage handles and residual oil supervise recovery system uses airtight oil water separator | |
| CN106039763B (en) | The extracting process of phenolic substances extraction equipment and phenolic substances | |
| CN205073719U (en) | Take pressure monitoring's extraction phase separating groove | |
| CN204752825U (en) | Alkaline solution carries regenerating unit of useless extractant of copper | |
| CN209772105U (en) | Pilot scale synthesis production line | |
| CN114369718B (en) | System and method for separating organic phase entrained in molybdenum qualified liquid by hydrogen peroxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |