CN207294296U - A kind of apparatus for continuous treatment of spent lye - Google Patents
A kind of apparatus for continuous treatment of spent lye Download PDFInfo
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- CN207294296U CN207294296U CN201721116673.9U CN201721116673U CN207294296U CN 207294296 U CN207294296 U CN 207294296U CN 201721116673 U CN201721116673 U CN 201721116673U CN 207294296 U CN207294296 U CN 207294296U
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Abstract
The utility model discloses a kind of apparatus for continuous treatment of spent lye, including reactor, concentration basin, filter, reactor, concentration basin, filter is sequentially connected by pipeline, the solid-liquid outlet of concentration basin and the solid-liquid outlet of filter are connected with the import of reflux pump, the outlet of reflux pump is connected with reactor, reactor, concentration basin, the top of filter is welded with air outlet pipe, air outlet pipe is connected with tail gas washing column, the top of tail gas washing column is equipped with exhaust outlet, tower tray is installed in tail gas washing column, the surrounding of tower tray is welded with baffle, liquid-leaking nozzle is offered on tower tray, the bottom of concentration basin is welded with scum pipe, the side of scum pipe is welded with the dredge outlet tilted upward, the angle of inclination of dredge outlet is 60 °.The medicament used in catalytic oxidation that the utility model uses is low for manganese sulfate, manganese chloride and oxidant cost, and the feasible recycling of catalyst of synthesis, largely reduces operating cost.
Description
Technical field
It the utility model is related to water reuse field, more particularly to a kind of apparatus for continuous treatment of spent lye.
Background technology
Vacuum potassium carbonate method desulfurization is the sulfide directly absorbed using solution of potassium carbonate and sodium hydroxide solution in coal gas
And hydrogen cyanide；In order to control the content of secondary salt in doctor solution in actual moving process, ensure desulfuration and decyanation effect, part salkali waste
Liquid must be arranged outside, in spent lye cyanide content be 1000-15000mg/l, sulfide content 1000-50000mg/l, if
Sewage disposal system is directly discharged into, total cyanogen, the content of total sulfur that will be greatly improved in waste water, and poison the bacterium in biochemical system
Group makes it lose activity, and seriously affects the treatment effect of biochemical system, ultimately causes the paralysis of sewage disposal system, most of public
Department the spent lye of vacuum potassium carbonate desulphurization system is sprayed to coal yard or is made iron residue cool, but the method not only pollute environment but also
Meeting etching apparatus, Chinese patent application CN103395910A propose a kind of Vacuum potassium carbonate desulfurization liquid waste treatment technology and dress
Put, sulfide and cyanide are generated ferrous sulfide and Prussian blue precipitation by this technique by two-stage reaction, are precipitated by two-stage
Muddy water is separated, not only long flow path but also the content to raw water sulfide and cyanide and the throwing of desulfuration and decyanation agent of this technique
Dosage requires all harsher；Substantial amounts of medicament expense is not only resulted in due to needing to add substantial amounts of medicament to use and can cause very
Big freight.
Utility model content
The purpose of this utility model is to provide a kind of apparatus for continuous treatment of spent lye, to solve above-mentioned technical problem.
The utility model uses following technical scheme to achieve the above object：
A kind of apparatus for continuous treatment of spent lye, including reactor, concentration basin, filter, tail gas washing column, reflux pump,
The reactor, concentration basin, filter are sequentially connected by pipeline, and the liquid for handling completion is discharged by filter upper water-out mouth,
Shaft is welded with reactor, agitating vane is welded with shaft, the solid-liquid outlet of concentration basin and the solid-liquid of filter go out
Mouth is connected with the import of reflux pump, and the outlet of reflux pump is connected with reactor, the reactor, concentration basin, the top of filter
Portion is welded with air outlet pipe, and air outlet pipe is connected with tail gas washing column, and the input end of tail gas washing column is located at bottom, and tail gas is cleaned
The top of tower is equipped with exhaust outlet, and tower tray is provided with tail gas washing column, and the surrounding of tower tray is welded with baffle, is offered Lou on tower tray
Fluid apertures, the bottom of the concentration basin are welded with scum pipe, valve are provided with scum pipe, and the side of scum pipe, which is welded with, to be tilted towards
On dredge outlet, the angle of inclination of dredge outlet is 60 °.
Preferably, the reactor first carries out high-efficiency desulfurization decyanation catalyst synthesis, then carries out desulfuration and decyanation to lye
Reaction.
Preferably, addition metal salt solution and oxidant in the reactor, metal salt solution for manganese chloride solution or
Manganese sulfate solution, oxidant are a kind of oxidant with Strong oxdiative property, oxidant using dichromic acid, hypochlorous acid, permanganic acid,
One or more combination in oxygen, hydrogen peroxide, ozone.
Preferably, the mass concentration of metal salt solution when high-efficiency desulfurization decyanation catalyst synthesizes is carried out in the reactor
Optimal for 60% for 30%-90%, the volume ratio of oxidant and spent lye is 600:1~5：1, it is optimal for 100:1, instead
It is 20 DEG C~50 DEG C to answer the reaction temperature in device, optimal for 35 DEG C.
Preferably, 1/5~1/100 of the metal salt solution in the reactor during progress desulfuration and decyanation reaction, most preferably
1/20, the volume ratio of oxidant and spent lye is 600:1~5：1, it is optimal for 100:1, carry out the reaction of desulfuration and decyanation reaction
Time is 1h~50h, most preferably 20h.
Preferably, the concentration basin is vertical sedimentation basin, sedimentation time of the mixture in concentration basin for 30min~
10h, optimal time 3h.
Preferably, the filter is a kind of Full-automatic self-cleaning filter, the model of Full-automatic self-cleaning filter
XHZL-JT。
Preferably, the tail gas washing column is absorbed using lye, optimal lye selection sodium hydroxide solution, hydrogen-oxygen
The mass concentration for changing sodium solution is 0.2%-10%, optimal for 1%.
Preferably, the scum pipe of the concentration basin bottom is normal closed mode.
Compared with prior art, the utility model has the following advantages：1st, the method that the utility model passes through catalysis oxidation
Sulfide in spent lye, cyanide are transformed into nontoxic thiosulfate, carbonate, nitrogen, 2, the utility model
The medicament used in catalytic oxidation used is low for manganese sulfate, manganese chloride and oxidant cost, the feasible circulation of catalyst of synthesis
Use, largely reduce operating cost, 3, using the spent lye sulfide that the utility model is handled from 1000-
50000mg/l is down to 50mg/l, and cyanide is down to 10mg/l from 1000-15000mg/l, and can be back to use other needs lye
Process, reduces supplies consumption and the comprehensive operation cost of enterprise, 4, the baffle of the surrounding welding of tower tray add tail gas and alkali
The time of contact of liquid, so as to improve vent gas treatment effect, 5, scum pipe the solid sundries of concentration basin bottom can be discharged, work as row
When slag pipe blocks, purge operation can be carried out in time using dredge outlet, 6, shaft and agitating vane can make molten in reactor
Liquid is sufficiently mixed.
Brief description of the drawings
Fig. 1 is the apparatus for continuous treatment schematic diagram of the utility model spent lye.
Fig. 2 is the tower tray enlarged drawing of the apparatus for continuous treatment of the utility model spent lye.
Fig. 3 is the scum pipe enlarged drawing of the apparatus for continuous treatment of the utility model spent lye.
In figure：1st, shaft, 2, reactor, 3, reflux pump, 4, filter, 5, tower tray, 6, tail gas washing column, 7, concentration basin,
8th, baffle, 9, liquid-leaking nozzle, 10, scum pipe, 11, dredge outlet, 12, water outlet.
Embodiment
The utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figs. 1-3, a kind of apparatus for continuous treatment of spent lye, including reactor 2, concentration basin 7, filter 4, tail gas
Washing column 6, reflux pump 3, the reactor 2, concentration basin 7, filter 4 are sequentially connected by pipeline, and reactor 2 first carries out efficiently
Desulfurization and decyanation catalyst synthesizes, and desulfuration and decyanation reaction is then carried out to lye, metal salt solution and oxidation are added in reactor 2
Agent, metal salt solution are manganese chloride solution or manganese sulfate solution, and oxidant is a kind of oxidant with Strong oxdiative property, oxygen
Using the one or more combination in dichromic acid, hypochlorous acid, permanganic acid, oxygen, hydrogen peroxide, ozone, reactor is interior to carry out agent
The mass concentration of metal salt solution when high-efficiency desulfurization decyanation catalyst synthesizes is 30%-90%, optimal for 60%, oxidant
Volume ratio with spent lye is 600:1~5：1, it is optimal for 100:1, the reaction temperature in reactor is 20 DEG C~50 DEG C, most
It is excellent for 35 DEG C, 1/5~1/100, most preferably 1/20 of metal salt solution when carrying out desulfuration and decyanation reaction in reactor, oxidation
The volume ratio of agent and spent lye is 600:1~5：1, it is optimal for 100:1, carry out desulfuration and decyanation reaction reaction time for 1h~
50h, most preferably 20h, the liquid for handling completion are discharged by 4 upper water-out mouth 12 of filter, and shaft 1, shaft are welded with reactor 2
Agitating vane is welded with 1, agitating vane is under gravity sufficiently mixed the liquid in reactor, and concentration basin 7 is consolidated
Import of the solid-liquid of liquid outlet and filter 4 outlet with reflux pump 3 is connected, and concentration basin is vertical sedimentation basin, mixing
Sedimentation time of the thing in concentration basin is 30min~10h, optimal time 3h, and the outlet of reflux pump 3 is connected with reactor 2, institute
State reactor 2, concentration basin 7, the top of filter 4 are welded with air outlet pipe, air outlet pipe is connected with tail gas washing column 6, and tail gas
The input end of washing column 6 is located at bottom, and the top of tail gas washing column 6 is equipped with exhaust outlet, tower tray 5 is provided with tail gas washing column 6,
The surrounding of tower tray 5 is welded with baffle 8, and liquid-leaking nozzle 9 is offered on tower tray 5, and tail gas washing column is absorbed using lye, optimal
Lye selects sodium hydroxide solution, and the mass concentration of sodium hydroxide solution is 0.2%-10%, optimal for 1%, the concentration
The bottom in pond 7 is welded with scum pipe 10, is provided with valve on scum pipe 10, and the side of scum pipe 10 is welded with dredging of tilting upward
Port 11, the angle of inclination of dredge outlet 11 is 60 °.
Utility model works principle：
1) synthesizing efficient desulfurization and decyanation catalyst：The metal salt solution that mass concentration is 60% is first added to reactor 2
In, then according to oxidant with to add spent lye volume ratio as 100:1 ratio is passed through oxidant, finally according to spent lye with
The volume ratio of metal salt solution is 2:1 ratio adds spent lye and is simultaneously sufficiently mixed, time of synthetic catalyst for 30min at the same time
Solution in reactor eventually becomes dark brown i.e. synthesizing efficient desulfuration and decyanation by transparent light brown gradually discoloration white opacity
Catalyst；Reactor temperature is controlled at 35 DEG C during synthesis；
2) desulfuration and decyanation reacts：Metal salt solution body when adding the volume of spent lye per hour to synthesize sulphur decyanation catalyst
Long-pending 1/20.Reactor control at 35 DEG C, spent lye with reacting under the action of oxidant again catalyst in reactor 2, when
React 20 it is small when after, most of sulfide and cyanide, generate thiosulfate and carbonate carbonate and nitrogen；
3) solid-liquor separation：After the mixture of spent lye and desulfurization and decyanation catalyst after reaction stops 3h in concentration basin 7
Most catalyst solid is deposited to concentration basin bottom；Supernatant containing a small amount of catalyst after filter 4 thoroughly with
Catalyst separates, and obtains the processed alkali solution of the clarification of qualification.
4) catalyst flows back：After desulfurization and decyanation catalyst solid after separation of solid and liquid and processing the mixture of spent lye according to
It is 1 with spent lye volume flow ratio:2 ratio is back to reactor 2 by catalyst reflux pump 3 and relays supervention life desulfuration and decyanation
Reaction.
5) tail gas absorption：Each equipment tail gas is absorbed by tail gas washing column 6 with 1% sodium hydroxide lye, reaches tail gas
To discharge standard.
Synthesizing efficient desulfurization and decyanation catalyst and desulfuration and decyanation reaction can according to circumstances carry out the change of concentration.If by quality
The metal salt solution that concentration is 30% is added in reactor 2, is then according to oxidant and spent lye volume ratio to be added
600:1 ratio is passed through oxidant, is finally 1 according to the volume ratio of spent lye and metal salt solution:2 ratio adds spent lye
And it is sufficiently mixed.The time of synthetic catalyst is that the solution in 120min simultaneous reactions devices is white by transparent light brown gradually discoloration
Color muddiness eventually becomes dark brown i.e. synthesizing efficient desulfurization and decyanation catalyst；Reactor temperature is controlled during synthesis
50℃。
2) desulfuration and decyanation reacts：Metal salt solution body when adding the volume of spent lye per hour to synthesize sulphur decyanation catalyst
1/100 long-pending reactor control at 50 DEG C, spent lye with reacting under the action of oxidant again catalyst in reactor 2, when
After reacting 50h, most of sulfide and cyanide, generate thiosulfate and carbonate carbonate and nitrogen.
3) solid-liquor separation：After the mixture of spent lye and desulfurization and decyanation catalyst after reaction stops 10h in concentration basin 7
Most catalyst solid is deposited to concentration basin bottom；Supernatant containing a small amount of catalyst after filter 4 thoroughly with
Catalyst separates, and obtains the processed alkali solution of the clarification of qualification.
4) catalyst flows back：After desulfurization and decyanation catalyst solid after separation of solid and liquid and processing the mixture of spent lye according to
It is 1 with spent lye volume flow ratio:10 ratio is back to the relaying supervention life desulfurization of reactor 2 by catalyst reflux pump 3 and takes off
Cyanogen reacts.
5) tail gas absorption：Each equipment tail gas is absorbed by tail gas washing column 6 with 0.2% sodium hydroxide lye, makes tail gas
Reach discharge standard.
If the metal salt solution that mass concentration is 90% is added in reactor 2, then according to oxidant with to add
Spent lye volume ratio is 5:1 ratio is passed through oxidant, is finally 6 according to the volume ratio of spent lye and metal salt solution:1 ratio
Example adds spent lye and is sufficiently mixed.The time of synthetic catalyst is solution in 15min simultaneous reactions devices by transparent shallow brown
The color white opacity that gradually changes colour eventually becomes dark brown i.e. synthesizing efficient desulfurization and decyanation catalyst；By reactor during synthesis
Interior temperature control is at 30 DEG C.
2) desulfuration and decyanation reacts：Metal salt solution body when adding the volume of spent lye per hour to synthesize sulphur decyanation catalyst
Long-pending 1/5.Reactor control is at 30 DEG C, and spent lye under the action of oxidant again catalyst in reactor 2 with reacting, when anti-
After answering 1h, most of sulfide and cyanide, generate thiosulfate and carbonate carbonate and nitrogen.
3) solid-liquor separation：The mixture of spent lye and desulfurization and decyanation catalyst after reaction stops 30min in concentration basin 7
Most catalyst solid is deposited to concentration basin bottom afterwards；Supernatant containing a small amount of catalyst is thorough after filter 4
Separated with catalyst, obtain the processed alkali solution of the clarification of qualification.
4) catalyst flows back：After desulfurization and decyanation catalyst solid after separation of solid and liquid and processing the mixture of spent lye according to
It is 1 with spent lye volume flow ratio:1 ratio is back to reactor 2 by catalyst reflux pump 3 and relays supervention life desulfuration and decyanation
Reaction.
5) tail gas absorption：Each equipment tail gas is absorbed by tail gas washing column 6 with 10% sodium hydroxide lye, reaches tail gas
To discharge standard.
The above is the utility model preferred embodiment, for the ordinary skill in the art, according to this reality
With new teaching, in the case where not departing from the principle of the utility model with spirit, the change that is carried out to embodiment, repair
Change, replace and modification is still fallen within the scope of protection of the utility model.
Claims (3)
1. a kind of apparatus for continuous treatment of spent lye, including reactor (2), concentration basin (7), filter (4), tail gas washing column
(6), reflux pump (3), it is characterised in that the reactor (2), concentration basin (7), filter (4) are sequentially connected by pipeline, place
Manage the liquid completed to be discharged by filter (4) upper water-out mouth (12), be welded with shaft (1) in reactor (2), shaft is welded on (1)
Agitating vane is connected to, the solid-liquid outlet of concentration basin (7) and the solid-liquid of filter (4) export the import with reflux pump (3)
Connection, the outlet of reflux pump (3) are connected with reactor (2), and the reactor (2), concentration basin (7), the top of filter (4) are equal
Air outlet pipe is welded with, air outlet pipe is connected with tail gas washing column (6), and the input end of tail gas washing column (6) is located at bottom, and tail gas is washed
The top of net tower (6) is equipped with exhaust outlet, is provided with tower tray (5) in tail gas washing column (6), the surrounding of tower tray (5) is welded with baffle
(8), liquid-leaking nozzle (9) is offered on tower tray (5), the bottom of the concentration basin (7) is welded with scum pipe (10), on scum pipe (10)
Valve is installed, the side of scum pipe (10) is welded with the dredge outlet (11) tilted upward, and the angle of inclination of dredge outlet (11) is
60°。
2. the apparatus for continuous treatment of a kind of spent lye according to claim 1, it is characterised in that the concentration basin (7) is
Vertical sedimentation basin.
3. the apparatus for continuous treatment of a kind of spent lye according to claim 1, it is characterised in that the filter (4) is
A kind of Full-automatic self-cleaning filter, the model XHZL-JT of Full-automatic self-cleaning filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721116673.9U CN207294296U (en) | 2017-09-01 | 2017-09-01 | A kind of apparatus for continuous treatment of spent lye |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721116673.9U CN207294296U (en) | 2017-09-01 | 2017-09-01 | A kind of apparatus for continuous treatment of spent lye |
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| Publication Number | Publication Date |
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| CN207294296U true CN207294296U (en) | 2018-05-01 |
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ID=62438507
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| CN201721116673.9U Active CN207294296U (en) | 2017-09-01 | 2017-09-01 | A kind of apparatus for continuous treatment of spent lye |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278999A (en) * | 2021-05-21 | 2021-08-20 | 江西国化实业有限公司 | Method and device for preparing methyl perfluorobutyrate |
-
2017
- 2017-09-01 CN CN201721116673.9U patent/CN207294296U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278999A (en) * | 2021-05-21 | 2021-08-20 | 江西国化实业有限公司 | Method and device for preparing methyl perfluorobutyrate |
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Address after: 073000 victory road, Dingzhou, Hebei, Baoding Patentee after: Hebei Xuyang Energy Co., Ltd Address before: 073000 victory road, Dingzhou, Hebei, Baoding Patentee before: HEBEI RISUN COKING Co.,Ltd. |