CN109133112A - A kind of technique and device of organic tubular membrane refined brine - Google Patents
A kind of technique and device of organic tubular membrane refined brine Download PDFInfo
- Publication number
- CN109133112A CN109133112A CN201811278711.XA CN201811278711A CN109133112A CN 109133112 A CN109133112 A CN 109133112A CN 201811278711 A CN201811278711 A CN 201811278711A CN 109133112 A CN109133112 A CN 109133112A
- Authority
- CN
- China
- Prior art keywords
- membrane
- organic tubular
- tubular type
- organic
- brine
- 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
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
Abstract
The present invention relates to the technique and device of a kind of organic tubular membrane refined brine, including crude brine refining reaction and brine filter, the brine filter is that the crude brine after refining reaction is obtained refined brine after the filtering of organic tubular type membranous system；Organic tubular type membranous system includes at least one organic tubular type membrane stack, connect to form the circulatory system with circulating pump by circulation pipe between the membrane stack import of organic tubular type membrane stack and membrane stack outlet；Organic tubular type membrane stack is connected by the organic tubular membrane component of at least two groups forms an entirety.The technology of the present invention is advanced, and technical process is simple, and refined salt water quality is high, and organic tubular membrane level of integrated system is high, occupied area is small, contamination resistance is strong.
Description
Technical field
The invention belongs to salt refining technical fields, and in particular to a kind of technique and dress of organic tubular membrane refined brine
It sets.
Background technique
Currently, domestic chlor-alkali industry mainly uses ionic membrane method alkaline, using saturated brine as raw material, electrolysis generates hydroxide
The products such as sodium, if containing the impurity such as a large amount of calcium, magnesium in salt water, calcium and magnesium ion can in electrolytic process with the OH on anode-Instead
Insoluble matter should be generated to be deposited on ionic membrane, seriously affect service life of ion-exchange membrane, therefore, salt refining is produced in ionic membrane method alkaline
It is particularly important in the process.
Traditional primary refined brine work of the country based on " barrel type reactor+dongle settling tank+sand filter " process route
Skill is eliminated substantially, currently, domestic chlor-alkali enterprises are mainly used to there is following two membrane filtration process: gore film, HVM film is generations
The organic microfiltration membrane process and ceramic membrane crossflow filtration technique of table.
The relatively early membrane process for chlorine industry salt refining is using gore film, HVM film as organic microfiltration membranes work of representative
Two kinds of skill.Its process route is crude brine first to preceding reactive tank, after metered sodium hydroxide and barium chloride, into medial launder,
It is then pumped into pressure air-dissolving tank, air flotation slot is entered after depressurizing, clear liquid goes out from air flotation slot overflow, and metered sodium carbonate is laggard
Enter rear reactive tank, membrane filter is sufficiently sent into after reaction and filters obtained primary brine.Above-mentioned technique is filtered using one end, film surface
Easily accumulation filter cake, flux decline is fast, and process fouling membrane is serious；The method that technique is separated using calcium carbonate and magnesium hydroxide substep,
Pre-treatment step is complicated, leads to that equipment one-time investment is big, takes up a large area；In addition, membrane filter needs to be mounted on three layers of factory
Room requires height to civil engineering, and construction investment is big；The filter membrane of use exist filter membrane combined strength bination it is low, easily by brine corrosion breakage etc.
Problem.
Ceramic membrane crossflow filtration technique technique is as follows: the purification such as sodium hydroxide, sodium carbonate and barium chloride being added into salt water
Agent reaction generates magnesium hydroxide, calcium carbonate and barium sulfate solid matter, adds solidifying auxiliary agent and is pre-processed with oxidant, is passed through
Absorption removes magnesium hydroxide colloidal and its fraction solids particle with co-precipitation, is carried out with ceramic membrane cross-flow filter to salt water
Filtering, the penetrating fluid of permeation ceramic membrane enter ion exchange resin, obtain refined brine after processing, not being rich in through film
The salt water of impurity returns to pretreatment.The technique uses crossflow filtration technique, effectively reduces fouling membrane, but exist in practical application
Following problems: (1) ceramic membrane is more crisp, easy fracture, and repair process need to be shut down by going wrong, and scene generally requires standby a set of pottery
Porcelain membrane module part；(2) ceramic membrane channels are relatively narrow, are easy to happen membrane channels blocking；(3) the ceramic membrane cleaning frequency is short, just needs within 1 week clear
It washes once, cleaning agent concentration is high, needs 15% salt acid soak；(4) ceramic membrane operation energy consumption is big, and cost of investment is high.
Summary of the invention
The purpose of the present invention is to provide the techniques and device of a kind of organic tubular membrane refined brine, can go in demineralized water
Qualified refined brine is made in the impurity such as suspended matter, colloid, precipitating.
Specific technical solution is as follows:
A kind of technique of organic tubular membrane refined brine, including crude brine refining reaction and brine filter, the brine filter be
Crude brine after refining reaction is obtained into refined brine after the filtering of organic tubular type membranous system；
Organic tubular type membranous system includes at least one organic tubular type membrane stack, the membrane stack import of organic tubular type membrane stack and film
Heap connect to form the circulatory system by circulation pipe between outlet with circulating pump；Organic tubular type membrane stack is by the organic pipe of at least two groups
Formula membrane module connects to form an entirety.
Organic tubular membrane system optimal is made of 2-10 organic tubular type membrane stack parallel connections.
Further scheme, NaCl concentration is 290-320g/L in the material liquid of the crude brine refining reaction.It is i.e. of the invention
For refined brine technique especially suitable for handling containing the crude brine that NaCl concentration is 290-320g/L, the present invention passes through crude salt
Water refining reaction is first by Mg in crude brine2+、Ca2+It is reacted, then passes through brine filter for Mg (OH)2Colloid, CaCO3Precipitating
And the impurity removal such as suspended matter carried in salt water.
Further scheme, the filter type of organic tubular membrane component are interior press filtration, pressure be 0.1 ~ 0.6MPa,
Crossflow velocity 1m/s-3m/s.
Further scheme, adjacent organic tubular membrane component arrange that one end is connected by connecting tube in vertical equity.
Further scheme, organic tubular type membranous system further includes cleaning system, and the cleaning system includes cleaning pump, clear
Washing lotion case, the output end of the cleaning pump passes through recoil liquid pipe respectively, membrane stack circulation pipe is connect with organic tubular type membrane stack；It is described anti-
Wash-out valve is equipped on fliud flushing pipe and membrane stack circulation pipe.
The open and close of two purge valves between control recoil liquid pipe and cleaning pump and organic tubular type membrane stack, from recoil mouth
The middle backwash liquid that cleaned pump importing is added cleans each membrane tube in organic tubular membrane component, will be attached to film surface
Impurity falls off, to effectively mitigate fouling membrane, restores its membrane flux, backwash liquid uses filtered fluid, finally from concentrated solution outlet
Outflow, realization recycle.Also cleaning agent (0.5% hydrochloric acid of concentration) can be imported to each organic pipe from membrane stack entrance by cleaning pump
Membrane tube surface impurity in formula membrane module is cleaned.
Further scheme, organic tubular membrane component include the membrane tube of several horizontal layouts inside housings, institute
The both ends for stating membrane tube are installed with the installation lid being connected and sealed with shell, make to form one between the outer wall of membrane tube and installation lid
A seal cavity；The both ends open of the membrane tube is in communication with the outside respectively, offers on the shell and is connected to seal cavity
Filtrate outlet.
Membrane tube refers to that the membrane tube of organic tubular membrane, structure are existing in the present invention.
Further scheme, offers the recoil mouth being connected to seal cavity on the shell, the filtrate outlet and anti-
It blurts out on the diagonal line of organic tubular membrane component；The recoil mouth is connect with the output end of the recoil liquid pipe, described
The output end of membrane stack circulation pipe and membrane stack import or membrane stack outlet connect.
Preferably, organic tubular type membrane stack is connected in series by the organic tubular membrane component of 3-8 group, wherein all filterings
Liquid outlet connect with filtering liquid pipe and exports organic tubular type membranous system, all recoil mouths by the recoil liquid pipe with clearly
Wash the output end connection of pump.
Further scheme, the outer diameter of the shell is 6-10 inches, length 3m-4m；The membrane tube is tubular structure,
Inner passage diameter is 5mm-8mm；The membrane material of the membrane tube be Kynoar, polyether sulfone, polysulfones or polyacrylonitrile, it is described
The membrane aperture of membrane tube is 10-50nm.
Further scheme is connected separately with booster pump and concentration liquid pipe on the circulation pipe, positioned at following for circulating pump both ends
The first switching valve, the second switching valve, third switching valve and the 4th switching valve are separately installed on endless tube；The circulating pump, first
Switching valve, organic tubular type membrane stack, the second switching valve form a recycled back, the circulating pump, third switching valve, organic tubular type
Membrane stack, the 4th switching valve form a forward circulation.
In order to preferably play the filter efficiency of organic tubular type membranous system, increase by 4 switching valves in systems, realizes organic
The input and output material automatic reverse function of organic tubular type membrane stack in tubular type membranous system, then when the first switching valve, the second switching valve opening, and
Third switching valve, the 4th switching valve close when, at this time stoste from be located at organic tubular type membrane stack lower part membrane module flow into, successively to
On flow through each organic tubular membrane component, the concentrate being retained down is flowed out from the membrane module for being located at organic tubular type membrane stack top,
Filtered fluid enters filtering liquid pipe from the filtrate outlet of each organic tubular membrane component and is recycled after filtering.Reach setting time
Afterwards, when the first switching valve, the second switching valve are automatically closed, third switching valve, the 4th switching valve are automatically opened, and salt water is from position at this time
Membrane module in organic tubular type membrane stack top flows into, downwards followed by each organic tubular membrane component, the concentration being retained down
Liquid is flowed out from the membrane module for being located at organic tubular type membrane stack lower part, repeatedly.Filtered fluid, concentrate are received respectively after filtering
Collection.I.e. by the input and output material automatic reverse function of organic tubular type membrane stack, realize to the membrane tube in each organic tubular membrane component
Surface carries out commutation and washes away, and so as to remove the impurity for being attached to membrane tube surface, effectively alleviates the pollution of membrane tube；
While pressure height, the load weight of the organic tubular membrane component of prime in organic tubular type membrane stack are also solved, and the organic tubular membrane of rear class
The deficiency that component pressure is low, load is light integrally extends the service life of entire organic tubular type membrane stack.
Another goal of the invention of the invention is to provide a kind of organic tubular membrane refined brine device comprising above-mentioned has
Machine tubular type membranous system, the discharge port connection of the reaction container of the stoste arrival end and refined brine of organic tubular type membranous system, has
The filtrate outlet of machine tubular type membranous system is connect with refined salt bucket, and the concentrated solution outlet and filter press of organic tubular type membranous system connect
It connects, the pressing filtering liquid discharge port of the filter press is connect with reaction container；The feed end of the reaction container passes through baffling slot and crude brine
Bucket connection.
The technique of refined brine is specific as follows:
S1: crude brine to be processed is first fed into baffling slot, in the metered refining agent NaOH and Na of baffling slot2CO3, then flow
Enter reaction container, wherein the Mg in crude brine2+、Ca2+Respectively with NaOH, Na2CO3Reaction generates Mg (OH)2、CaCO3Solid matter；
Wherein NaOH additional amount is and Mg2+Excessive 0.1~0.3g/L, Na after reaction2CO3Additional amount is and Ca2+Excessive 0.3 after reaction~
0.5g/L。
S2: crude brine after refining reaction is sent into filtration system, organic tubular type membrane stack by suspended matter in crude brine, colloid,
The impurity such as precipitating retention, through salt water, that is, refined brine of organic tubular type membrane stack；
S3: the concentrate of organic tubular type membrane stack retention is sent into filter press, the salt slurry outward transport processing of extrusion, pressing filtering liquid returns to reaction
Circular treatment is carried out in bucket.
The salt water after refining reaction is directly filtered using tubular type membranous system organic in the present invention, the Mg that reaction is generated
(OH)2Colloid, CaCO3The impurity such as the suspended matter carried in precipitating and salt water removal, through in the refined brine of organic tubular type membrane stack
Ca2+、Mg2+Total content < 1mg/L, SS < 1mg/L, turbidity < 0.5NTU.
The channel diameter of membrane tube in organic tubular membrane of the present apparatus is 5mm-8mm, makes it have broader membrane channels,
In use, situations such as membrane channels will not block, ensures filter quality.
It is tubular structure made of 10-50nm membrane material winding, the membrane tube aperture point that membrane tube, which is as membrane aperture, in the present apparatus
Cloth is narrow, filtering accuracy, so that suspended matter, colloid, large granular impurity are not easily accessed in fenestra, belongs to truly super
Filter, therefore, filtered brine quality is higher, quality is more stable.
The filtration system that the present invention is formed using the membrane tube in special aperture and channel, along with cross-flow filtration mode makes dirt
Dye object can not be gathered in film surface, so that organic tubular membrane has stronger contamination resistance, flux decline speed is slow.Therefore,
The chemical cleaning period of organic tubular membrane of the invention is long, and the chemical cleaning period is greater than 1 month；In addition, since pollutant is not allowed
It is easily gathered in fenestra, along with thicknesses of layers only has 20 μm, the amount of pollutant in membrane tube is less, therefore, using low concentration
Salt acid cleaner (concentration 0.5%) can be such that film properties restore.
Organic tubular type membranous system of the invention can be used for filtering the impurity such as suspended matter in crude salt, colloid, precipitating.In addition, this
Filtration system integrated level is high, occupied area is small.
Organic tubular membrane is made of several membrane tubes, and the quantity of membrane tube is set according to the internal diameter and actual needs of shell
It sets.The both ends sealing of membrane tube is integral, forms cavity inside housings；In addition, membrane tube has certain flexibility, be not in
Leakage, membrane tube breakage problem, it is ensured that production continuous and steady operation.
Detailed description of the invention
Fig. 1 is the process flow chart of organic tubular membrane refined brine in the present invention,
Fig. 2 is the schematic illustration of organic tubular type membranous system in the present invention,
Fig. 3 is the structural schematic diagram of organic tubular membrane component in the present invention,
Fig. 4 is the schematic cross-section of Fig. 3,
Fig. 5 is the structural schematic diagram of organic tubular type membrane stack in the present invention,
Fig. 6 is the structural schematic diagram of organic tubular membrane refined brine device in the present invention.
In figure: the organic tubular membrane component of 10-, 11- shell, 12- membrane tube, 13- recoil mouth, 14- filtrate outlet；20- has
Machine tubular type membrane stack, the outlet of 21- membrane stack, 22- membrane stack entrance, 23- connecting tube；31- booster pump, 32- circulating pump, 33- cleaning pump；
40- circulation pipe, 50- concentration liquid pipe, 60- filtering liquid pipe, the first reversal valve of 71-, the second reversal valve of 72-, 73- third reversal valve,
The 4th reversal valve of 74-, 75- valve；80- cleaning fluid tank；The organic tubular type membranous system of 90-, 101- crude salt bucket, 102- baffling slot,
103- reaction container, 104- filter press, 105- refined salt bucket.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
The present invention will be described in detail by 1-6 with reference to the accompanying drawing:
Embodiment 1:
As shown in Fig. 1,2,5, a kind of technique of organic tubular membrane refined brine includes the following steps: that crude brine to be processed is being rolled over
NaOH and Na is added in chute2CO3After flow into reaction container, the crude brine in reaction container is re-fed into organic tubular type membranous system, organic tubular type
Film retains the impurity such as suspended matter, colloid, precipitating in crude brine, through salt water, that is, refined brine of organic tubular membrane, is trapped
Concentrate is sent into filter press, the salt slurry outward transport processing of extrusion, and pressing filtering liquid returns to reaction container circular treatment；
Organic tubular type membranous system includes at least one organic tubular type membrane stack 20, the membrane stack import of organic tubular type membrane stack 20
It connect to form the circulatory system with circulating pump 32 by circulation pipe 40 between 21 and membrane stack outlet 22；Organic tubular type membrane stack 20 by
The organic series connection of tubular membrane component 10 of at least two groups forms an entirety.
Organic tubular membrane system optimal is made of 2-10 organic tubular type membrane stack parallel connections.
Further scheme, the filter type of organic tubular membrane component 10 are interior press filtration, pressure is 0.1 ~
0.6MPa, crossflow velocity 1m/s-3m/s.
Further scheme, adjacent organic tubular membrane component 10 arrange that one end is connected by connecting tube 23 in vertical equity.
Further scheme, organic tubular type membranous system further includes cleaning system, the cleaning system include cleaning pump 33,
Cleaning fluid tank 80, the output end of the cleaning pump 33 pass through recoil liquid pipe, membrane stack circulation pipe and organic tubular type membrane stack 20 respectively and connect
It connects；Wash-out valve 75 is equipped on the recoil liquid pipe and membrane stack circulation pipe.
The open and close of two recoil valves between control recoil liquid pipe and cleaning pump and organic tubular type membrane stack, from recoil mouth
The middle backwash liquid that cleaned pump importing is added cleans each membrane tube in organic tubular membrane component, will be attached to film surface
Impurity falls off, to effectively mitigate fouling membrane, restores its membrane flux, backwash liquid uses filtered fluid, finally from concentrated solution outlet
Outflow, realization recycle.Also cleaning agent (0.5% hydrochloric acid of concentration) can be imported to each organic pipe from membrane stack entrance by cleaning pump
Membrane tube surface impurity in formula membrane module is cleaned.
Further scheme, as shown in Figure 3,4, organic tubular membrane component 10 include several horizontal layouts in shell
Membrane tube 12 inside 11, the both ends of the membrane tube 12 are installed with the installation lid being connected and sealed with shell 11, make membrane tube 12
Outer wall and installation lid between formed a seal cavity；The both ends open of the membrane tube 12 is in communication with the outside respectively, the shell
The filtrate outlet 14 being connected to seal cavity is offered on body 11.
Further scheme offers the recoil mouth 13 being connected to seal cavity, the filtrate outlet on the shell 11
14 are located on the diagonal line of organic tubular membrane component 10 with recoil mouth 13；The output of the recoil mouth 13 and the recoil liquid pipe
The output end of end connection, the membrane stack circulation pipe is connect with membrane stack import 21 or membrane stack outlet 22.
Preferably, organic tubular type membrane stack 20 is connected in series by the organic tubular membrane component 10 of 3-8 group, wherein all
Filtrate outlet 14 connect with filtering liquid pipe 60 and exports organic tubular type membranous system, and all recoil mouths 13 are by described anti-
Fliud flushing pipe is connect with the output end of cleaning pump 33.
Further scheme, the outer diameter of the shell 11 is 6-10 inches, length 3m-4m；The membrane tube 12 is tubulose knot
Structure, inner passage diameter R are 5mm-8mm；The membrane material of the membrane tube is Kynoar, polyether sulfone, polysulfones or polypropylene
Nitrile, the membrane aperture of the membrane tube are 10-50nm.
Further scheme is connected separately with booster pump 31 and concentration liquid pipe 50 on the circulation pipe 40, is located at circulating pump 32
The first switching valve 71, the second switching valve 72, third switching valve 73 and the 4th switching valve are separately installed on the circulation pipe 40 at both ends
74；The circulating pump 32, the first switching valve 71, organic tubular type membrane stack 20, the second switching valve 72 form a recycled back, described
Circulating pump 32, third switching valve 73, organic tubular type membrane stack 20, the 4th switching valve 74 form a forward circulation.
This organic tubular type membranous system is imported in circulation pipe 40 by booster pump 31 when in use, by crude brine to be filtered,
When the first switching valve 71, the second switching valve 72 open, and third switching valve 73, the 4th switching valve 74 close when, at this time stoste from
Membrane module positioned at organic 20 lower part of tubular type membrane stack flows into, and flows through each organic tubular membrane component 10 upwards in turn, then retains
The concentrate to get off is flowed out from the membrane module for being located at organic 20 top of tubular type membrane stack, and filtered fluid is from each organic tubular membrane group after filtering
The filtrate outlet 14 of part 10 enters filtering liquid pipe 60 and is recycled.After reaching setting time, the switching of the first switching valve 71, second
When valve 72 is automatically closed, third switching valve 73, the 4th switching valve 74 are automatically opened, and crude brine is from positioned at organic tubular type membrane stack at this time
The membrane module on 20 tops flows into, and downwards followed by each organic tubular membrane component 10, the concentrate being retained down has from being located at
The membrane module of 20 lower part of machine tubular type membrane stack flows out, repeatedly.Both filtering had been realized, while having been had also achieved to organic tubular membrane group
The effect that the surface of each membrane tube carries out that commutation is washed away in part 10 effectively mitigates so that impurity be avoided to be attached to membrane tube surface
The pollution of membrane tube；While pressure height, the load weight of the organic tubular membrane of prime in membrane module are also solved, and the organic tubular type of rear class
The deficiency that film pressure is low, load is light integrally extends the service life of membrane module.
When there is impurity attachment on 12 surface of membrane tube, the filtered fluid of certain pressure is added from recoil liquid pipe, from each organic
Recoil mouth 13 on tubular membrane component 10 enters, and cleans to each 12 surface of membrane tube, then flows out from concentrated solution outlet, warp
Liquid pipe 50 is concentrated and exports organic tubular type membranous system, and the impurity for being attached to membrane tube surface punching falls off simultaneously, to effectively subtract
Light fouling membrane, and restore its membrane flux.Backwash generally 8-10 hours primary.
When the salt acid cleaner (concentration 0.5%) of low concentration using such as larger than 1 month a period of time, can be used directly from having
The membrane stack entrance of machine tubular type membrane stack 20 is added, into the membrane tube 12 in each organic tubular membrane component 10, to each membrane tube surface
It is cleaned, film properties can be made to restore as before.
Embodiment 2:
A kind of device of organic tubular membrane refined brine, as shown in Figure 6 comprising above-mentioned organic tubular type membranous system 90, it is described
The discharge port of the reaction container 103 of the stoste arrival end and refined brine of organic tubular type membranous system 90 connects, organic tubular type membranous system
90 filtrate outlet is connect with refined salt bucket 105, and the concentrated solution outlet of organic tubular type membranous system 90 is connect with filter press 104,
The pressing filtering liquid discharge port of the filter press 104 is connect with reaction container 103；The feed end of the reaction container 103 passes through baffling slot 102
It is connect with crude salt bucket 101.
Embodiment 3:
The technique of refined brine is following (as shown in Figure 1):
S1: crude brine to be processed is first fed into baffling slot, in the metered refining agent NaOH and Na of baffling slot2CO3, then flow
Enter reaction container, wherein the Mg in crude brine2+、Ca2+Respectively with NaOH, Na2CO3Reaction generates Mg (OH)2、CaCO3Solid matter；
Wherein NaOH additional amount is and Mg2+Excessive 0.1~0.3g/L, Na after reaction2CO3Additional amount is and Ca2+Excessive 0.3 after reaction~
0.5g/L。
S2: crude brine after refining reaction is sent into filtration system, organic tubular type membrane stack by suspended matter in crude brine, colloid,
The impurity such as precipitating retention, through salt water, that is, refined brine of organic tubular type membrane stack；
S3: the concentrate of organic tubular type membrane stack retention is sent into filter press, the salt slurry outward transport processing of extrusion, pressing filtering liquid returns to reaction
Circular treatment is carried out in bucket.
The salt water after refining reaction is directly filtered using filtration system in the present invention, the Mg (OH) that reaction is generated2Glue
Body, CaCO3The impurity such as the suspended matter carried in precipitating and salt water removal, through Ca in the refined brine of organic tubular type membrane stack2+、
Mg2+Total content < 1mg/L, SS < 1mg/L, turbidity < 0.5NTU.
The filter type of organic tubular type membrane stack is interior press filtration, 0.1 ~ 0.6MPa of operating pressure, film surface stream in the present invention
Fast 1m/s-3m/s.
That is, the specific embodiment of refined brine is as follows:
One: the crude brine in crude salt bucket is salt dissolving water, Ca2+Content 0.61g/L, Mg2+Content 0.05g/L, is pumped directly into baffling
Slot, metered sodium carbonate 1.95g/L and sodium hydroxide 0.30g/L, then flows into reaction container, wherein salt dissolving in baffling slot
In Mg2+、Ca2+Respectively with NaOH, Na2CO3Reaction generates Mg (OH)2、CaCO3Solid matter, the crude brine after refining reaction are sent
Enter organic tubular type membranous system, organic tubular type membranous system is composed in series by 5 organic tubular type membrane stacks, each organic tubular type membrane stack string
Join organic tubular membrane component of 10 inches of 6 diameters, length 4m, the channel 5mm of membrane tube, aperture are in organic tubular membrane component
30nm, membrane material are Kynoar, and the working method of filtration system is for example above-mentioned.Control 0. 35MPa of operating pressure, film surface stream
Fast 1.5m/s reacts the Mg (OH) of generation2Colloid, CaCO3The impurity such as the suspended matter carried in precipitating and salt water are trapped, thoroughly
Cross Ca in the refined brine of organic tubular type membrane stack2+、Mg2+Total content 0.65mg/L, SS=0.36mg/L, turbidity 0.20NTU, refined brine
It is collected into refined salt bucket；The concentrate of organic tubular type membrane stack retention is sent into filter press, the salt slurry outward transport processing of extrusion, pressing filtering liquid
Return to reaction container circular treatment.
Two: the crude brine in crude salt bucket is the brine gone out from well ore mining, Ca2+Content 1.38g/L, Mg2+Content 0.22g/
L is pumped directly into baffling slot, the metered sodium carbonate 4.1g/L and sodium hydroxide 0.20g/L in baffling slot, then flows into reaction
Bucket, wherein the Mg in brine2+、Ca2+Respectively with NaOH, Na2CO3Reaction generates Mg (OH)2、CaCO3Solid matter, refining reaction
Crude brine afterwards is sent into filtration system, and organic tubular type membranous system is made of 1 organic tubular type membrane stack, organic tubular type membrane stack series connection
Organic tubular membrane component of 46 inches of diameters, length 3m, channel 8mm, the aperture 30nm of membrane tube, membrane material is polyvinylidene fluoride
The working method of alkene, filtration system is for example above-mentioned.0. 45MPa of operating pressure is controlled, crossflow velocity 2.5m/s reacts the Mg of generation
(OH)2Colloid, CaCO3The impurity such as the suspended matter carried in precipitating and salt water are trapped, through the refined brine of organic tubular type membrane stack
Middle Ca2+、Mg2+Total content 0.82mg/L, SS=0.47mg/L, turbidity 0.33NTU, refined brine enter the collection of refined salt bucket；It is organic
The concentrate of tubular type membrane stack retention is sent into filter press, the salt slurry outward transport processing of extrusion, and pressing filtering liquid returns to reaction container circular treatment.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
According to previous embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of technique of organic tubular membrane refined brine, it is characterised in that: including crude brine refining reaction and brine filter, institute
Stating brine filter is that the crude brine after refining reaction is obtained refined brine after the filtering of organic tubular type membranous system；
Organic tubular type membranous system includes at least one organic tubular type membrane stack (20), the membrane stack of organic tubular type membrane stack (20)
It connect to form the circulatory system with circulating pump (32) by circulation pipe (40) between import (21) and membrane stack outlet (22)；It is described organic
Tubular type membrane stack (20) forms an entirety by the organic tubular membrane component of at least two groups (10) series connection.
2. a kind of technique of organic tubular membrane refined brine according to claim 1, it is characterised in that: the crude salt crystal
Making NaCl concentration in the material liquid of reaction is 290-320g/L；The filter type of organic tubular membrane component (10) is interior presses through
Filter, pressure are 0.1 ~ 0.6MPa, crossflow velocity 1m/s-3m/s.
3. a kind of technique of organic tubular membrane refined brine according to claim 1, it is characterised in that: adjacent organic tubular type
Membrane module (10) arranges that one end is connected by connecting tube (23) in vertical equity.
4. a kind of technique of organic tubular membrane refined brine according to claim 1, it is characterised in that: organic tubular type
Membranous system further includes cleaning system, and the cleaning system includes cleaning pump (33), and the output end of the cleaning pump (33) leads to respectively
Cross recoil liquid pipe, membrane stack circulation pipe is connect with organic tubular type membrane stack (20)；It is equipped on the recoil liquid pipe and membrane stack circulation pipe
Wash-out valve (75).
5. a kind of technique of organic tubular membrane refined brine according to claim 1-4, it is characterised in that: described
Organic tubular membrane component (10) membrane tube (12) that include several horizontal layouts internal in shell (11), the two of the membrane tube (12)
End is installed with the installation lid being connected and sealed with shell (11), makes to form one between the outer wall of membrane tube (12) and installation lid
Seal cavity；The both ends open of the membrane tube (12) is in communication with the outside respectively, offers on the shell (11) and seal cavity
The filtrate outlet (14) of connection.
6. a kind of technique of organic tubular membrane refined brine according to claim 5, it is characterised in that: the shell (11)
On offer the recoil mouth (13) being connected to seal cavity, the filtrate outlet (14) and recoil mouth (13) are located at organic tubular type
On the diagonal line of membrane module (10)；Recoil mouth (13) connect with the output end of the recoil liquid pipe, the membrane stack circulation
The output end of pipe is connect with membrane stack import (21) or membrane stack outlet (22).
7. a kind of technique of organic tubular membrane refined brine according to claim 6, it is characterised in that: organic tubular type
Membrane stack (20) be connected in series by the organic tubular membrane component of 3-8 group (10), wherein all filtrate outlets (14) with filtering
Liquid pipe (60) connects and exports organic tubular type membranous system, and all recoil mouths (13) pass through the recoil liquid pipe and cleaning pump
(33) output end connection.
8. a kind of technique of organic tubular membrane refined brine according to claim 5, it is characterised in that: the shell (11)
Outer diameter be 6-10 inches, length 3m-4m；The membrane tube (12) is tubular structure, inner passage diameter 5mm-8mm；
The membrane material of the membrane tube is Kynoar, polyether sulfone, polysulfones or polyacrylonitrile, and the membrane aperture of the membrane tube is 10-
50nm。
9. a kind of technique of organic tubular membrane refined brine according to claim 1, it is characterised in that: the circulation pipe
(40) it is connected separately with booster pump (31) and concentration liquid pipe (50) on, is located on the circulation pipe (40) at circulating pump (32) both ends respectively
First switching valve (71), the second switching valve (72), third switching valve (73) and the 4th switching valve (74) are installed；The circulating pump
(32), the first switching valve (71), organic tubular type membrane stack (20), the second switching valve (72) form a recycled back, the circulation
Pump (32), third switching valve (73), organic tubular type membrane stack (20), the 4th switching valve (74) one forward circulation of formation.
10. a kind of organic tubular membrane refined brine device, it is characterised in that: including organic tubular membrane as described in claim 1
The discharge port of system (90), the reaction container (103) of the stoste arrival end and refined brine of organic tubular type membranous system (90) connects
It connects, the filtrate outlet of organic tubular type membranous system (90) is connect with refined salt bucket (105), the concentration of organic tubular type membranous system (90)
Liquid outlet is connect with filter press (104), and the pressing filtering liquid discharge port of the filter press (104) is connect with reaction container (103)；It is described anti-
The feed end of bucket (103) is answered to connect by baffling slot (102) with crude salt bucket (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278711.XA CN109133112A (en) | 2018-10-30 | 2018-10-30 | A kind of technique and device of organic tubular membrane refined brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278711.XA CN109133112A (en) | 2018-10-30 | 2018-10-30 | A kind of technique and device of organic tubular membrane refined brine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109133112A true CN109133112A (en) | 2019-01-04 |
Family
ID=64807048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278711.XA Pending CN109133112A (en) | 2018-10-30 | 2018-10-30 | A kind of technique and device of organic tubular membrane refined brine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109133112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232157A1 (en) * | 2022-05-31 | 2023-12-07 | 成都思达能环保设备有限公司 | Co-precipitation reaction system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923736A (en) * | 2012-10-22 | 2013-02-13 | 戈尔工业品贸易（上海）有限公司 | Processing method for refining industrial brine |
| CN104437098A (en) * | 2014-12-01 | 2015-03-25 | 厦门市天泉鑫膜科技股份有限公司 | Forward material-feeding and reverse-cleaning membrane system |
-
2018
- 2018-10-30 CN CN201811278711.XA patent/CN109133112A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923736A (en) * | 2012-10-22 | 2013-02-13 | 戈尔工业品贸易（上海）有限公司 | Processing method for refining industrial brine |
| CN104437098A (en) * | 2014-12-01 | 2015-03-25 | 厦门市天泉鑫膜科技股份有限公司 | Forward material-feeding and reverse-cleaning membrane system |
Non-Patent Citations (2)
| Title |
|---|
| 何晓文等: "《水体污染处理新技术及应用》", 31 March 2013, 中国科学技术大学出版社 * |
| 彭希仁: "《电镀清洁生产技术与管理》", 30 September 1996, 中国环境科学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232157A1 (en) * | 2022-05-31 | 2023-12-07 | 成都思达能环保设备有限公司 | Co-precipitation reaction system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100460326C (en) | Method of refining salt by membrane filtration | |
| CN103288177B (en) | Continuous membrane filtration system and water treatment method | |
| CN105152207A (en) | High-efficiency sulfuric acid method titanium dioxide washing system and washing process thereof | |
| CN104628186B (en) | The treatment process of Na-ion exchanger regeneration waste liquid and cyclic utilization system in a kind of process without drainage of waste water | |
| CN104211203B (en) | A kind of bittern or seawater ultrafiltration pretreatment technique and pretreatment system | |
| CN201610402U (en) | Recycling and deep treatment device for electronic electroplating wastewater | |
| CN209221885U (en) | A kind of organic tubular type membranous system for refined brine technique | |
| CN105399249B (en) | A kind of device and method of municipal wastewater advanced treating | |
| CN109133112A (en) | A kind of technique and device of organic tubular membrane refined brine | |
| CN204981430U (en) | Adopt tubular micro -filtration membrane's silver -colored effluent disposal system that contains | |
| CN207856476U (en) | A kind of filter plant | |
| CN110745910A (en) | Honeycomb ceramic membrane filtering method and filtering device | |
| CN207886985U (en) | The forward and reverse nanofiltration processing system of cross-flow loop ultrafiltration | |
| CN211169987U (en) | Honeycomb ceramic membrane filter equipment | |
| CN108273389A (en) | A kind of forward and reverse reverse osmosis super-pressure reverse osmosis treatment system of cross-flow loop ultrafiltration | |
| CN104785109B (en) | Film group device with scrubbing mechanism and the water purifier using the film group device | |
| CN203333347U (en) | Continuous membrane filtration system | |
| CN208776480U (en) | A kind of set treatment device of strong complex state heavy metal wastewater thereby | |
| CN208791402U (en) | A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment | |
| CN209010278U (en) | A kind of discharge of heavy metal wastewater thereby high standard and recyclable device | |
| CN103708503B (en) | Causticizing method alkali preparation technology | |
| CN208949028U (en) | A kind of processing system of coal mine drainage water | |
| CN104710048B (en) | A kind of technique of zero discharge for Treatment of Metal Surface waste water | |
| CN206204061U (en) | The dense hardness film reaction system of salt waste water zero of industry | |
| CN204873876U (en) | Efficient sulfate process titanium dioxide powder washing system |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210422 Address after: 238200 workshop 5, hi tech business incubator, Hexian Economic Development Zone, Ma'anshan City, Anhui Province Applicant after: Anhui xingqida Membrane Technology Co.,Ltd. Address before: 238200 First Floor of No.5 High-tech Enterprise Incubator Factory Building of Ma'anshan City and County Economic Development Zone, Anhui Province Applicant before: ANHUI FENGKEDA TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
|
| RJ01 | Rejection of invention patent application after publication |