CN207575879U - A kind of pretreatment unit for viscose rayon spent lye - Google Patents
A kind of pretreatment unit for viscose rayon spent lye Download PDFInfo
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- CN207575879U CN207575879U CN201721552743.5U CN201721552743U CN207575879U CN 207575879 U CN207575879 U CN 207575879U CN 201721552743 U CN201721552743 U CN 201721552743U CN 207575879 U CN207575879 U CN 207575879U
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- waste liquid
- vacuum filter
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Abstract
The utility model discloses a kind of pretreatment units for viscose rayon spent lye, including being equipped with waste liquid entrance, waste residue outlet, concentrated solution outlet and the vacuum filter of purified liquor outlet, Filter column is set in vacuum filter, salkali waste liquid storage tank and material-compound tank are set on vacuum filter, salkali waste liquid storage tank connects waste liquid entrance, connection salkali waste liquid storage tank is connected with setting salkali waste pump, material-compound tank on the pipeline of waste liquid entrance on the pipeline between salkali waste liquid storage tank and salkali waste pump.The utility model substitutes existing plate filter using vacuum filter, vacuum filter can be achieved diatomite by material-compound tank and salkali waste pump and spread on Filter column surface in advance, on the one hand the staple fiber in spent lye can be prevented directly to be contacted with filter material, filter material is avoided to block and shorten the working life, on the other hand, diatomite can be realized repeatedly is coated with the decrease speed for slowing down filtering traffic in advance, can improve the pretreatment efficiency of spent lye in the unit interval.
Description
Technical field
The utility model is a kind of pretreatment unit for viscose rayon spent lye, and in particular in viscose rayon production
For the pretreatment unit of press lye, belong to viscose glue liquid waste disposal technique field.
Background technology
A large amount of press lye can be generated when prepared by alkali fibre in viscose glue production, to reduce production cost, press lye will
Sheet steeping is reused for, but dipping effect is influenced containing a large amount of fiber, resin, ash content and other impurities in press lye.
The prior art is that processing is filtered to the lye after squeezing, is filtered in entire technological process using sheet frame, traditional sheet frame
Filter forms multiple closed filter chambers using multilayer sheet frame and filter cloth are sealed, and solid-liquid point is carried out under the action of operating pressure
There are many defects during from, use, such as：Dismounting sheet frame needs a large amount of artificial every time, causes high labor cost；Dismantle sheet frame ring
Border is poor, and labor intensity is big, and personnel are difficult recruitment；Sheet frame usage quantity is more, and go wrong probability height, and maintenance and repair costs are high；Third
Synthetic fibre sheet frame does filter material using polypropylene fibre and is filtered, and consumable quantity monthly is big, and production cost is high；The soft water amount that cleaning filter cloth uses
Greatly, it is of high cost, and generate a large amount of sewage increase environmental protection treatment cost.
In addition to plate-frame filtering processing, existing patent document CN102943322A（A kind of squeezing alkali process device and recycling side
Method, 2013.02.27）The mode using two-stage tubular filter and cartridge filter is disclosed, is filtered to remove in press lye
Half fiber impurity and fine particle are, it can be achieved that half fiber and lye efficiently separate, the recycling press lye of high-efficiency and economic.
Utility model content
The purpose of this utility model is to provide a kind of pretreatment unit for viscose rayon spent lye, using vacuum mistake
Filter substitutes existing plate filter, and vacuum filter can be achieved diatomite by material-compound tank and salkali waste pump and spread on Filter column table in advance
On the one hand face can prevent the staple fiber in spent lye from directly being contacted with filter material, filter material is avoided to block and shorten the working life, another
Aspect, diatomite can be realized repeatedly is coated with the decrease speed for slowing down filtering traffic in advance, can improve the pre- of spent lye in the unit interval
Treatment effeciency.
The utility model is achieved through the following technical solutions：A kind of pretreatment unit for viscose rayon spent lye, packet
The vacuum filter equipped with waste liquid entrance, waste residue outlet, concentrated solution outlet and purified liquor outlet is included, filtering is set in vacuum filter
Column, sets salkali waste liquid storage tank and material-compound tank on vacuum filter, salkali waste liquid storage tank connection waste liquid entrance, connection salkali waste liquid storage tank with it is useless
Salkali waste pump is set on the pipeline of liquid entrance, material-compound tank is connected on the pipeline between salkali waste liquid storage tank and salkali waste pump.
Filter column in the vacuum filter is vertically arranged, and waste liquid entrance and waste residue outlet are set on vacuum filter bottom
Portion, concentrated solution outlet and purified liquor outlet are set at the top of vacuum filter.
The concentrated solution outlet sets the feed pipe of connection steeping liquor blend tank, in the benefit that connection material-compound tank is set on feed pipe
Liquid pipe.
The vacuum filter side wall sets the first compressed air inlet, and setting the second compressed air at the top of vacuum filter enters
Mouthful.
The utility model compared with prior art, has the following advantages and advantageous effect：
（1）The problems such as to solve inconvenient existing cleaning when existing plate and frame filter press filters spent lye, high labor cost, this
Utility model substitutes existing plate-frame filtering mode using diatomaceous Filter column is covered in advance, and material-compound tank and salkali waste pump realize vacuum mistake
Filter column is repeatedly precoated in filter, and makes the rate of filtration declined when slowing down flow in filter process, can be in a short time
Improve filtering rate, the pretreatment efficiency of spent lye in guarantor unit's time.
（2）Diatomite feed liquid is sent into vacuum mistake by the utility model in a manner that salkali waste pumps offer pressure differential by material-compound tank
In filter, realize that the automatic of Filter column surface is precoated, control mode is simple, in actual use, by diatomaceous particle diameter with
The ratio control of Filter column surface apertures exists（3~4）：2, in filter process, spreading on the diatomite on Filter column surface in advance can prevent
Staple fiber in spent lye is directly contacted with filter material, and filter material is avoided to block and shorten the working life.
（3）The utility model is related to Filter column by the way of vertically arranged, waste liquid outlet and waste residue outlet be set on
The bottom of vacuum filter under differential pressure action, not only can guarantee that diatomite spreads on Filter column surface in advance, wait precoat discharging when,
Also ensure that the diatomite to come off smoothly can export quick device for transferring by the waste residue of filter bottom under the effect of gravity, with
Treat precoating next time, it is easy to operate, easy to control.
（4）In the utility model, material-compound tank is used for the preparation of diatomite feed liquid, and the seasoning liquid used uses clear water or mistake
Lye after filter can avoid lye being caused to pollute using other liquid, and the ratio of diatomite and seasoning liquid is controlled in every 1m3's
Clear water or lye contain the diatomite of 15~20kg, and suitable ratio can not only control the effective time precoated, avoid because of ratio
Too low and the time growth that causes to precoat situation, moreover it is possible to which rationally control is precoated the load of pump, and the pump that avoids precoating goes out due to load is big
Existing impeller failure blocks the serious conditions such as pipeline.
（5）The utility model is removed Automatic Control and by way of filter material is avoided to block can reduce cost of labor and equipment
Outside cost, diatomite price also and its cheaply, after repeatedly precoating, judges filter efficiency, when diatomite mistake by salkali waste pump pressure
After filtering efficiency reduction, the diatomite discharge vacuum filter after being used by compressed air, the diatomite waste residue of discharge contains
Water is less than 50%, can be routed directly to power burning, and there are no pollution to the environment, reduces the alkali waste water discharge come by half frame belt removal
Reduce the environmental protection treatment cost of company.
Description of the drawings
Fig. 1 is the flow diagram of the utility model.
Wherein, 1-vacuum filter, 2-Filter column, 3-waste liquid entrance, the outlet of 4-waste residue, 5-concentrated solution outlet,
6-purified liquor outlet, 7-salkali waste liquid storage tank, 8-material-compound tank, 9-salkali waste pump, 10-feed pipe, 11-steeping liquor blend tank,
12-liquid supplementation pipe, the 13-the first compressed air inlet, the 14-the second compressed air inlet.
Specific embodiment
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is not
It is limited to this.
Embodiment 1：
The present embodiment proposes a kind of pretreatment unit for viscose rayon spent lye, which is to be used to incite somebody to action
The spent lye for including 0.5% fiber, 0.1% resin, 0.04% ash content was carried out by being covered with diatomaceous vacuum filter 1 in advance
It filters and obtains the processing unit of filtering lye, wherein, it precoats including prepared diatomite feed liquid is existed by pressure differential absorption
2 surface of Filter column of vacuum filter 1, the Filter column 2 in vacuum filter 1 is by the way of vertically arranged, vacuum filter 1
Bottom sets waste liquid entrance 3 and waste residue outlet 4, and 1 top of vacuum filter sets concentrated solution outlet 5 and purified liquor outlet 6, and connection waste liquid enters
Diatomite feed liquid feeding passage is set on the pipeline of mouth 3.
The present embodiment is additionally provided with salkali waste liquid storage tank 7 and material-compound tank 8 on vacuum filter 1, and salkali waste liquid storage tank 7 connects waste liquid
Entrance 3, connection salkali waste liquid storage tank 7 are stored in useless with setting salkali waste pump 9, the spent lye in viscose glue production on the pipeline of waste liquid entrance 3
In alkali liquor storage tank 7, vacuum filter 1 is sent by salkali waste pump 9,1 side wall of vacuum filter is additionally provided with the first compressed air inlet
13, for the spent lye in vacuum filter 1 to be depressed into the port of export of Filter column 2 by 2 input end of Filter column, realize spent lye
Filtering；Material-compound tank 8 is connected to for preparing diatomite feed liquid on the pipeline between salkali waste liquid storage tank 7 and salkali waste pump 9.Actually make
Diatomite feed liquid in material-compound tank 8 is adsorbed in 2 surface of Filter column by the pressure difference of 0.3MPa, then stores up spent lye by the used time
Spent lye in tank 7 send to Filter column 2 and is filtered, the lye after filtering include 0.05% fiber, 0.01% resin,
0.004% ash content is sent to steeping liquor blend tank 11 by concentrated solution outlet 5 by feed pipe 10, for the allotment of steeping liquor
When use, clear liquid is sent out by purified liquor outlet 6.After filtering a period of time, when salkali waste pumps the increase of 9 pressure, it can continue to filtering
2 surface of column is precoated second layer diatomite feed liquid, while increases the inlet pressure of vacuum filter 1, since diatomaceous particle is straight
Diameter is more than original pore size filter, can continue to filter, it is to be filtered after concentration lye when process filtration requirement is not achieved, then will
For diatomite by being laid down on Filter column 2, the second compressed air inlet 14 set using 1 top of vacuum filter is passed through pressure thereto
Contracting air, by diatomite by 4 discharge vacuum filter 1 of waste residue outlet.
In the present embodiment, the ratio of 2 surface apertures of diatomaceous particle diameter and Filter column is controlled 3：2, it is diatomaceous
Primary precoat can prevent the staple fiber in spent lye from directly being contacted with filter material in filter process, and filter material is avoided to block and shorten
Service life；Diatomite is adsorbed in the surface of Filter column 2 using pressure difference, and absorption and discharging are convenient, and repeatedly precoating can also slow down
The decrease speed of filtering traffic improves the pretreatment efficiency of spent lye in the unit interval.
Embodiment 2：
The present embodiment proposes a kind of pretreatment unit for viscose rayon spent lye, as shown in Figure 1, the pretreatment fills
Put is by being covered with diatomaceous vacuum mistake in advance for the spent lye by 0.8% fiber, 0.12% resin, 0.05% ash content is included
Filter 1 is filtered and obtains the processing unit of filtering lye, wherein, it precoats including prepared diatomite feed liquid is passed through pressure
Filter column 2 of the force difference absorption in 2 surface of Filter column of vacuum filter 1, vacuum filter 1 by the way of vertically arranged,
Vacuum filter 1 uses VCF filters, and bottom sets waste liquid entrance 3 and waste residue outlet 4, and waste residue outlet 4 is less than waste liquid entrance 3,
Top sets concentrated solution outlet 5 and purified liquor outlet 6, and diatomite feed liquid feeding passage is set on the pipeline of connection waste liquid entrance 3.
The present embodiment is additionally provided with salkali waste liquid storage tank 7 and material-compound tank 8 on vacuum filter 1, and salkali waste liquid storage tank 7 connects waste liquid
Entrance 3, connection salkali waste liquid storage tank 7 are stored in useless with setting salkali waste pump 9, the spent lye in viscose glue production on the pipeline of waste liquid entrance 3
In alkali liquor storage tank 7；Material-compound tank 8 is connected to for preparing diatomite feed liquid on the pipeline between salkali waste liquid storage tank 7 and salkali waste pump 9.
During practical operation, clear water is added in material-compound tank 8 and diatomite is mixed and diatomite feed liquid is made, by every 1m3
Clear water in input 20kg diatomite prepared；Automatic valve V1, V3, V5 are opened, starts salkali waste pump 9, the silicon in material-compound tank 8
Diatomaceous earth feed liquid is pumped into VCF filters and precoats to Filter column 2, when salkali waste, which pumps 9 outlet pressures, reaches 3bar, opens in order
Valve V4 is opened, valve V5 is closed, Open valve V2, closes valve V1, into filtration condition；When 9 outlet library pressure of salkali waste pump reaches
During to 6bar, 20kg diatomite is added in into material-compound tank 8, repeats the process of precoating of Filter column 2, and to the mistake in VCF filters
Filter column 2 is precoated for the second time, is filtered again after the completion of precoating.When salkali waste, which pumps 9 outlet pressures, reaches 10bar, open
Valve V6, stop salkali waste pump 9, close valve V3, the compressed air at this time from the first compressed air inlet 13 will be in container
Spent lye is by filter column 2 all press-in steeping liquor blend tank 11；Valve V6, Open valve V7 are closed, opens VCF filters
Waste residue outlet 4, the compressed air at this time from the second compressed air inlet 14 is flowed out and will be attached to out of Filter column 2 outward
Diatomite on Filter column 2, which is all blown off, to be fallen into waste residue trolley, completes diatomaceous discharging.
Lye after filtering includes 0.05% fiber, 0.011% resin, 0.006% ash content, by concentrated solution outlet 5
Sent by feed pipe 10 to steeping liquor blend tank 11, for steeping liquor allotment when use, clear liquid is sent by purified liquor outlet 6
Go out.In the present embodiment, the ratio of 2 surface apertures of diatomaceous particle diameter and Filter column is controlled 3：2.Vacuum filter 1
The feed pipe 10 of connection steeping liquor blend tank 11 is provided on concentrated solution outlet 5, filtering lye is sent through feed pipe 10 to dipping
Alkali liquor preparing tank 11, in set on feed pipe 10 connection material-compound tank 8 liquid supplementation pipe 12, liquid supplementation pipe 12 connect material-compound tank 8, for
Lye after the supplement filtering of batch can 8, in order to the allotment of next diatomite feed liquid.
After filtering a period of time, when salkali waste pumps the increase of 9 pressure, it can continue to precoat second layer diatom to 2 surface of Filter column
Earth material liquid, while increase the inlet pressure of vacuum filter 1, since diatomaceous particle diameter is more than original pore size filter, energy
Continue to filter, it is to be filtered after concentration lye when process filtration requirement is not achieved, then by diatomite by being unloaded on Filter column 2
Fall, the second compressed air inlet 14 set using 1 top of vacuum filter is passed through compressed air thereto, by diatomite by giving up
4 discharge vacuum filter 1 of slag outlet.
In the present embodiment, it is diatomaceous it is primary precoat can be prevented in filter process staple fiber in spent lye directly with
Filter material contacts, and filter material is avoided to block and shorten the working life；Diatomite is adsorbed in the surface of Filter column 2 using pressure difference, absorption and
Discharging is convenient, and the decrease speed of filtering traffic can also be slowed down by repeatedly precoating, and improves the pretreatment effect of spent lye in the unit interval
Rate.
The above, is only the preferred embodiment of the utility model, and limit in any form is not done to the utility model
System, every any simple modification made according to the technical essence of the utility model to above example, equivalent variations, each falls within
Within the scope of protection of the utility model.
Claims (4)
1. a kind of pretreatment unit for viscose rayon spent lye, it is characterised in that：Including being equipped with waste liquid entrance（3）, waste residue
Outlet（4）, concentrated solution outlet（5）And purified liquor outlet（6）Vacuum filter（1）, vacuum filter（1）Inside set Filter column（2）,
Vacuum filter（1）On set salkali waste liquid storage tank（7）And material-compound tank（8）, salkali waste liquid storage tank（7）Connect waste liquid entrance（3）, connect useless
Alkali liquor storage tank（7）With waste liquid entrance（3）Pipeline on set salkali waste pump（9）, material-compound tank（8）Connect salkali waste liquid storage tank（7）With salkali waste
Pump（9）Between pipeline on.
2. a kind of pretreatment unit for viscose rayon spent lye according to claim 1, it is characterised in that：It is described true
Air filter（1）Interior Filter column（2）It is vertically arranged, waste liquid entrance（3）It is exported with waste residue（4）Set on vacuum filter（1）Bottom
Portion, concentrated solution outlet（5）And purified liquor outlet（6）Set on vacuum filter（1）Top.
3. a kind of pretreatment unit for viscose rayon spent lye according to claim 1, it is characterised in that：It is described dense
Contracting liquid exports（5）If connect steeping liquor blend tank（11）Feed pipe（10）, in feed pipe（10）On set connection material-compound tank（8）
Liquid supplementation pipe（12）.
4. a kind of pretreatment unit for viscose rayon spent lye according to claim 1, it is characterised in that：It is described true
Air filter（1）Side wall sets the first compressed air inlet（13）, vacuum filter（1）Top sets the second compressed air inlet
（14）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721552743.5U CN207575879U (en) | 2017-11-20 | 2017-11-20 | A kind of pretreatment unit for viscose rayon spent lye |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721552743.5U CN207575879U (en) | 2017-11-20 | 2017-11-20 | A kind of pretreatment unit for viscose rayon spent lye |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207575879U true CN207575879U (en) | 2018-07-06 |
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ID=62732558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721552743.5U Active CN207575879U (en) | 2017-11-20 | 2017-11-20 | A kind of pretreatment unit for viscose rayon spent lye |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207575879U (en) |
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2017
- 2017-11-20 CN CN201721552743.5U patent/CN207575879U/en active Active
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