CN106986357B - A kind of pyrosulfurous acid mother liquid of sodium reclaiming system - Google Patents
A kind of pyrosulfurous acid mother liquid of sodium reclaiming system Download PDFInfo
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- CN106986357B CN106986357B CN201710380649.4A CN201710380649A CN106986357B CN 106986357 B CN106986357 B CN 106986357B CN 201710380649 A CN201710380649 A CN 201710380649A CN 106986357 B CN106986357 B CN 106986357B
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- mother liquor
- storage tank
- molten slurry
- slurry device
- tank
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/14—Preparation of sulfites
- C01D5/145—Pyrosulfites or metabisulfites
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of pyrosulfurous acid mother liquid of sodium reclaiming systems, including centrifugal filter, mother liquor tank, hot water storage tank, molten slurry device, screw feeder and lye storage tank.Sodium pyrosulfite product is completed mother liquor through centrifugal filter and is sufficiently separated with what is crystallized, and mother liquor completes secondary filter through mother liquor tank, dissolves soda ash into molten slurry device, soda ash solution returns to reaction kettle participation via lye storage tank and reacts.Mother liquor reuse effect of the present invention is good, and crystallization and impurity less residue, choline speed is fast, and benign cycle is realized while energy-saving and emission-reduction.
Description
Technical field
The invention belongs to Recycle Technology of Waste Water fields, and in particular to a kind of pyrosulfurous acid mother liquid of sodium reclaiming system.
Background technology
Sodium pyrosulfite is a kind of important reducing agent, industrially generally produces sodium pyrosulfite with wet processing：By SO2
Burnt sulfurous is precipitated in counter current contacting, generation sodium hydrogensulfite, sodium hydrogensulfite dehydration in thtee-stage shiplock reaction kettle with soda ash solution
Sour sodium crystal, centrifugation drying finished product.It will produce a large amount of mother liquor while crystallization, there is a large amount of reaction intermediates in mother liquor
Sodium sulfite and sodium hydrogensulfite, mother liquor reuse can accelerate crystallization speed, while saving raw material and reducing discharging of waste liquid.
The slurries containing crystallization in prior art usually by reaction kettle discharge centrifuge, and mother liquor, which returns to choline bucket, to be continued
As reaction raw materials, but the device systems of the mother liquor reuse rare refer to.
Invention content
The present invention is intended to provide a kind of pyrosulfurous acid mother liquid of sodium reclaiming system, crystal and mother liquor good separating effect, reuse
Residue of mother crystallizes and impurity is few, effectively prevent line clogging, mother liquor that can be made full use of, and realizes energy-saving and emission-reduction.
In order to achieve the above objectives, the specific technical solution that the present invention uses is as follows：
A kind of pyrosulfurous acid mother liquid of sodium reclaiming system, including centrifugal filter, mother liquor tank, hot water storage tank, molten slurry device, spiral
Feeder and lye storage tank.Centrifugal filter, mother liquor tank, molten slurry device and lye storage tank pass sequentially through pipeline connection, centrifugal filtration
Coupled with product transfer kettle by pipeline at the top of device, the pipeline branch road of mother liquor tank and molten slurry device is connected with hot water storage tank, molten slurry device
Feed inlet is connected with screw feeder, is coupled by pipeline with reaction kettle at the top of lye storage tank.
Centrifugal filter bottom shaft is connected with rotary drum, and rotary drum side wall is equipped with multiple apertures, for centrifuging Mother liquor
Discharge.It is covered with aperture in rotary drum in the filter medium of 100-120 mesh, prevents crystal from being thrown away by aperture, can receive after centrifugation
The most of crystal of collection.
Detachable sieve plate is arranged at the bottom of the mother liquor tank, the filter membrane of 120 mesh of aperture ＜ is covered on sieve plate, after centrifugal filtration
If mother liquor has crystal or other impurities residual, can be removed by the filter membrane of mother liquor tank.
The hot water storage tank conveys hot water to molten slurry device, when for choline for the first time or disposing mother liquor amount deficiency, conveying
Cleaning pipes simultaneously reduce deposit in pipeline.
It is the inlet tube that a row extends to bottom along barrel inside the molten slurry device inlet, plays the role of liquid separation, keep away
Exempt from solution largely incline it is lower lead to the problem of splashing, while be also beneficial to mother liquor and soda ash comes into full contact with mixing.Inside molten slurry device
There is the blender that motor controls, 2 are connected on agitating shaft~3 agitating paddles accelerate solution rate.
The helical axis front end of the screw feeder, which is equipped with, twists tablet, can in time handle the material of caking, ensure
The efficiency and stability of feeding.
The lye storage tank and molten slurry device inner wall are coated with epoxy-phenol resin paint, and soda ash solution has certain corrosivity, ring
Oxygen phenolic coating has good alkaline-resisting anticorrosion effect, avoids the damage of container.
Description of the drawings
Fig. 1：The structural schematic diagram of the present invention.
In figure：1. centrifugal filter, 2. mother liquor tanks, 3. hot water storage tanks, 4. molten slurry devices, 5. screw feeders, 6.
Lye storage tank, 7. reaction kettles, 8. product transfer kettles, 1-1. rotary drums, the detachable sieve plates of 2-1., 4-1. feed inlets, 4-2.
Inlet tube, 4-3. blenders.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
A kind of pyrosulfurous acid mother liquid of sodium reclaiming system, including centrifugal filter 1, mother liquor tank 2, hot water storage tank 3, molten slurry device 4,
Screw feeder 5 and lye storage tank 6；The centrifugal filter 1, mother liquor tank 2, molten slurry device 4 and lye storage tank 6 pass sequentially through pipeline
Connection, 1 top of centrifugal filter are coupled by pipeline with product transfer kettle 8, and mother liquor tank 2 and the pipeline branch road of molten slurry device 4 connect
There are hot water storage tank 3, molten slurry device feed inlet 4-1 to be connected with screw feeder 5,6 top of lye storage tank is joined with reaction kettle 7 by pipeline
It connects.
Reaction kettle 7 is thtee-stage shiplock reaction kettle, SO2The mother liquor crystallization mixture pump for reacting generation wherein with soda ash is beaten
Enter product transfer kettle 8, mother liquor crystallization mixture product flows into centrifugal filter 1 by 8 outlet at bottom of transfer kettle.
1 bottom shaft of centrifugal filter is connected with the rotary drum 1-1 that side wall is equipped with multiple apertures, and being covered with aperture in rotary drum 1-1 exists
The filter medium of 100 mesh.Shaft drives the run at high speed centrifugal force of generation of rotary drum 1-1 that will crystallize and detach with mother liquor, and crystallization is by mistake
Filter medium is trapped in rotary drum 1-1, and mother liquor is thrown away by side wall aperture enters mother liquor tank 2 by 1 outer wall outlet at bottom of centrifugal filter.
It is 120 mesh that the detachable sieve plate 2-1 for being covered with filter membrane, filter sizes, which are arranged, at 2 bottom of mother liquor tank.Mother liquor is carried out through filter membrane
Secondary filter removes remaining crystal after centrifugal filtration or other impurities.Mother liquor is flowed out by 2 outlet at bottom of mother liquor tank to be beaten with pump
Enter molten slurry device 4.
Soda ash is added by the material feeding box of screw feeder 5, and molten slurry device charging is transported under the effect of screw feeder 5
Mouth 4-1.
Be the inlet tube 4-2 that a row extends to bottom along barrel inside molten slurry device 4 inlet, mother liquor by inlet enter through
Molten 4 bottom of slurry device is flowed directly to by drain pipe 4-2 liquid separations, is come into full contact with soda ash.The blender 4-3 for opening motor control, is stirred
It mixes and is connected with 2 agitating paddles on axis, accelerate solution rate.It is supplemented from hot water storage tank 3 to molten slurry device 4 when disposing mother liquor amount deficiency molten
Agent.Soda ash solution flow to lye storage tank 6 by molten 4 liquid outlet of slurry device.
Soda ash solution pump is transferred to reaction kettle 7 by lye storage tank 6, participates in reacting as raw material, mother liquor completes its reuse.
The present invention can also have other numerous embodiments, without departing substantially from spirit of that invention and principle, be familiar with this
The technical staff in field should belong to the scope of protection of the present invention according to any change and distortion that the present invention makes.
Claims (1)
1. a kind of pyrosulfurous acid mother liquid of sodium reclaiming system, including centrifugal filter（1）With molten slurry device（4）, it is characterised in that：Also wrap
Include mother liquor tank（2）, hot water storage tank（3）, screw feeder（5）With lye storage tank（6）；The centrifugal filter（1）, mother liquor tank
（2）, molten slurry device（4）With lye storage tank（6）Pass sequentially through pipeline connection, centrifugal filter（1）Top passes through in pipeline and product
Turn kettle（8）Connection, mother liquor tank（2）With molten slurry device（4）Pipeline branch road be connected with hot water storage tank（3）, molten slurry device feed inlet（4-1）
It is connected with screw feeder（5）, lye storage tank（6）Top and reaction kettle（7）Coupled by pipeline；The centrifugal filter（1）It is interior
The rotary drum in portion（1-1）Side wall is equipped with multiple apertures, and filter medium is covered in rotary drum；The filtration media pore diameters are in 100-120 mesh；
The mother liquor tank（2）Detachable sieve plate is arranged at bottom（2-1）It is covered with filter membrane, 120 mesh of aperture ＜；It is inside the molten slurry device inlet
One row extends to the inlet tube of bottom along barrel（4-2）；There is the blender that motor controls inside the molten slurry device（4-3）, stirring
2 are connected on axis~3 agitating paddles；Screw feeder（5）Helical axis front end be equipped with twist tablet；The molten slurry device（4）It is stored up with lye
Slot（6）Inner wall is coated with epoxy-phenol resin paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380649.4A CN106986357B (en) | 2017-05-25 | 2017-05-25 | A kind of pyrosulfurous acid mother liquid of sodium reclaiming system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380649.4A CN106986357B (en) | 2017-05-25 | 2017-05-25 | A kind of pyrosulfurous acid mother liquid of sodium reclaiming system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106986357A CN106986357A (en) | 2017-07-28 |
| CN106986357B true CN106986357B (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710380649.4A Active CN106986357B (en) | 2017-05-25 | 2017-05-25 | A kind of pyrosulfurous acid mother liquid of sodium reclaiming system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110156128A (en) * | 2019-05-10 | 2019-08-23 | 江苏华晖环保科技有限公司 | A kind of soda ash throwing device of water process with high salt |
| CN114057210B (en) * | 2021-11-02 | 2023-06-27 | 启东亚太药业有限公司 | Method and equipment for synthesizing food-grade potassium hydrogen sulfite |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565343A (en) * | 2015-12-28 | 2016-05-11 | 宣城市楷昂化工有限公司 | Sodium metabisulfite production method |
| CN205700093U (en) * | 2016-04-16 | 2016-11-23 | 湖南岳阳三湘化工有限公司 | A kind of sodium pyrosulfite produces form waste gas of sulfur dioxide and utilizes device |
| CN206799176U (en) * | 2017-05-25 | 2017-12-26 | 宣城市楷昂化工有限公司 | A kind of pyrosulfurous acid mother liquid of sodium reclaiming system |
-
2017
- 2017-05-25 CN CN201710380649.4A patent/CN106986357B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565343A (en) * | 2015-12-28 | 2016-05-11 | 宣城市楷昂化工有限公司 | Sodium metabisulfite production method |
| CN205700093U (en) * | 2016-04-16 | 2016-11-23 | 湖南岳阳三湘化工有限公司 | A kind of sodium pyrosulfite produces form waste gas of sulfur dioxide and utilizes device |
| CN206799176U (en) * | 2017-05-25 | 2017-12-26 | 宣城市楷昂化工有限公司 | A kind of pyrosulfurous acid mother liquid of sodium reclaiming system |
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| CN106986357A (en) | 2017-07-28 |
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Inventor after: Wang Weiguo Inventor after: Shan Shiguang Inventor before: Wang Weiguo Inventor before: Shan Siguang |
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