CN109437247A - Potassium carbonate recovery method in the production of super capacitor carbon - Google Patents
Potassium carbonate recovery method in the production of super capacitor carbon Download PDFInfo
- Publication number
- CN109437247A CN109437247A CN201811574082.5A CN201811574082A CN109437247A CN 109437247 A CN109437247 A CN 109437247A CN 201811574082 A CN201811574082 A CN 201811574082A CN 109437247 A CN109437247 A CN 109437247A
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- CN
- China
- Prior art keywords
- potassium carbonate
- heating
- super capacitor
- solution
- capacitor carbon
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/22—Purification
- C01D7/24—Crystallisation
Abstract
The invention discloses potassium carbonate recovery methods in the production of super capacitor carbon, the following steps are included: S1, activator is melted in the equipment outside activation furnace, then investment carbonized material Hybrid Heating solidification, then it is transferred to activation furnace activation, S2, super capacitor carbon after will be activated adds water process, then heat, form charcoal slurry, S3, cooling and stewing process are carried out to the charcoal slurry after heating, then it is separated by solid-liquid separation by centrifugal treating, filtering obtains solution of potassium carbonate, S4, the solution of potassium carbonate of acquisition is subjected to heating concentration by multi-effect vacuum evaporator, using heating and be repeated heating concentration, obtain certain density potassium carbonate concentrated solution, S5, by potassium carbonate concentrated solution after high-temperature heating is evaporated and is cooled down, potassium carbonate crystallization is thermally dried, then it is obtained by recycling Potassium carbonate crystallization.The advantages of the present invention over the prior art are that: this method recovery efficiency is high, consumes energy low, can reduce production cost.
Description
Technical field
The present invention relates to potassium carbonate recycling sides in supercapacitor manufacturing technology field, in particular to the production of super capacitor carbon
Method.
Background technique
A large amount of potassium hydroxide is then needed during production supercapacitor carbon, the effect of potassium hydroxide is mainly producing
Carbon Materials are made to generate a large amount of hole in active carbon activation process, to be allowed to superpower adsorption capacity and very high specific surface area
And pore volume, potassium hydroxide react with Carbon Materials during high-temperature activation and generate potassium carbonate, potassium carbonate returns after water extracts
It receives, since its concentration is lower, can not directly utilize.If potassium carbonate liquid direct emission is not only polluted environment, but also make
At the wasting of resources, these problems have it is to be solved, so needing to improve this.
Summary of the invention
The technical problem to be solved by the present invention is to overcome above technological deficiency, provide that a kind of recovery efficiency is high, energy consumption
Potassium carbonate recovery method in the super capacitor carbon production low, super capacitor carbon production cost can be greatly lowered.
In order to solve the above technical problems, technical solution provided by the invention are as follows: potassium carbonate recycling in the production of super capacitor carbon
Method, comprising the following steps:
S1, activator is melted in equipment outside activation furnace, the tanning of carbonized material Hybrid Heating is put into after melting, then into
Row is heating and curing, the supercapacitor charcoal after being then transferred to activation furnace activation preparation activation.
S2, will be activated after super capacitor carbon add water process, then heated, formed charcoal slurry.
S3, cooling and stewing process are carried out to the charcoal slurry after heating, is then separated by solid-liquid separation, is collected by centrifugal treating
Centrifugal liquid, filtering obtain solution of potassium carbonate.
S4, the solution of potassium carbonate of acquisition is subjected to heating concentration by multi-effect vacuum evaporator, using heating and
Heating concentration is repeated, obtains certain density potassium carbonate concentrated solution.
S5, by potassium carbonate concentrated solution after high-temperature heating is evaporated and is cooled down, it is dry that potassium carbonate crystallization is subjected to heating
It is dry, then potassium carbonate crystallization is obtained by recycling.
As an improvement, the activator is the mixture of KOH and NaOH, the carbonized material is phenolic resin, and heating adds
For hot temperature less than 450 DEG C, the solidification refers to that activator uniformly forms a variety of bonding states in carbonized material, activates furnace temperature
Degree control is at 700 DEG C to 800 DEG C, heat preservation 1 to 3h, after being then cooled to 500 DEG C of temperature.
As an improvement, in the step S2 by super capacitor carbon activated material add water formed charcoal slurry, amount of water ratio be 1:5 extremely
The charcoal of formation is starched and is heated in such a way that water steam pipe conducts by 1:8, and being heated to temperature is 80 to 100 DEG C.
As an improvement, the solution of potassium carbonate concentration after being centrifugated in the step S3 is 15 to 30%.
As an improvement, multi-effect vacuum evaporator is to make evaporator by the successive operation of vacuum pump in the step S4
For interior vacuum cavitations -0.05 to -0.08MPa, it is 45-55% that solution of potassium carbonate is concentrated into concentration under condition of negative pressure.
As an improvement, the solution of potassium carbonate after concentration is pumped into Rollingscratchboarddrier in the step S5, water is steamed
Gas is passed through in the roller of Rollingscratchboarddrier, by heating the moisture evaporation for the solution of potassium carbonate that will be adhered on roller, doing
It is dry to obtain potassium carbonate crystallization.
The object of the invention is to overcome deficiency existing for above-mentioned prior art, not only obtain with higher economic value
Potassium carbonate product, moreover it is possible to which the condensed water secondary use that will be formed in removal process not only saves water resource, also complies with national ring
Guarantor and heat recovery policy, the solution of potassium carbonate of acquisition is heated to be concentrated into certain concentration range, then crystallized drying
After form solid, not only remanufacture is high-efficient for this technique, and consume energy it is very low, drop super capacitor carbon production cost substantially
It is low.
Specific embodiment
Below with reference to the specific embodiment technical solution that the present invention will be described in detail, to become apparent from, this is intuitively understood
The invention essence of invention.
Embodiment 1:
S1, activator is melted in equipment outside activation furnace, the activator is the mixture of KOH and NaOH, melting
Investment carbonized material Hybrid Heating tanning afterwards, the carbonized material are phenolic resin, and heating temperature is 400 DEG C, then carry out heating solid
Change, the solidification refers to that activator uniformly forms a variety of bonding states in carbonized stock, is then transferred to activation furnace activation system
Supercapacitor charcoal after standby activation, activation furnace temperature control keep the temperature 2h, are then cooled to 500 DEG C of temperature at 750 DEG C.
S2, will be activated after super capacitor carbon add water process, then heated, formed charcoal slurry, amount of water
Ratio is 1:6, and the charcoal of formation is starched and is heated in such a way that water steam pipe conducts, and being heated to temperature is 80 DEG C.
S3, cooling and stewing process are carried out to the charcoal slurry after heating, is then separated by solid-liquid separation, is collected by centrifugal treating
Centrifugal liquid, filtering obtain solution of potassium carbonate, and the solution of potassium carbonate concentration after separation is 20%.
S4, the solution of potassium carbonate of acquisition is subjected to heating concentration, the multiple-effect vacuum by multi-effect vacuum evaporator
Evaporator is to make the vacuum cavitations in evaporator in -0.06MPa, solution of potassium carbonate is negative by the successive operation of vacuum pump
It is 50% that concentration is concentrated under the conditions of pressure, using heating and being repeated heating concentration, obtains certain density carbonic acid
Potassium concentrated solution.
S5, the solution of potassium carbonate after concentration is pumped into Rollingscratchboarddrier, it is dry that vapor is passed through roller scraper plate
In the roller of machine, by heating the moisture evaporation for the solution of potassium carbonate being adhered on roller, being dried to obtain potassium carbonate crystallization.
Embodiment 2:
S1, activator is melted in equipment outside activation furnace, the activator is the mixture of KOH and NaOH, melting
Investment carbonized material Hybrid Heating tanning afterwards, the carbonized material are phenolic resin, and heating temperature is 430 DEG C, then carry out heating solid
Change, the solidification refers to that activator uniformly forms a variety of bonding states in carbonized stock, is then transferred to activation furnace activation system
Supercapacitor charcoal after standby activation, activation furnace temperature control keep the temperature 3h, are then cooled to 500 DEG C of temperature at 700 DEG C.
S2, will be activated after super capacitor carbon add water process, then heated, formed charcoal slurry, amount of water
Ratio is 1:5, and the charcoal of formation is starched and is heated in such a way that water steam pipe conducts, and being heated to temperature is 90 DEG C.
S3, cooling and stewing process are carried out to the charcoal slurry after heating, is then separated by solid-liquid separation, is collected by centrifugal treating
Centrifugal liquid, filtering obtain solution of potassium carbonate, and the solution of potassium carbonate concentration after separation is 15%.
S4, the solution of potassium carbonate of acquisition is subjected to heating concentration, the multiple-effect vacuum by multi-effect vacuum evaporator
Evaporator is to make the vacuum cavitations in evaporator in -0.08MPa, solution of potassium carbonate is negative by the successive operation of vacuum pump
It is 55% that concentration is concentrated under the conditions of pressure, using heating and being repeated heating concentration, obtains certain density carbonic acid
Potassium concentrated solution.
S5, the solution of potassium carbonate after concentration is pumped into Rollingscratchboarddrier, it is dry that vapor is passed through roller scraper plate
In the roller of machine, by heating the moisture evaporation for the solution of potassium carbonate being adhered on roller, being dried to obtain potassium carbonate crystallization.
The present invention and its embodiments have been described above, this description is no restricted, and actual mode is not
It is confined to this.All in all if those of ordinary skill in the art are inspired by it, in the feelings for not departing from the invention objective
Under condition, frame mode similar with the technical solution and embodiment are not inventively designed, should belong to guarantor of the invention
Protect range.
Claims (6)
1. potassium carbonate recovery method in the production of super capacitor carbon, it is characterised in that: the following steps are included:
S1, activator is melted in equipment outside activation furnace, the tanning of carbonized material Hybrid Heating is put into after melting, is then added
Heat cure, the supercapacitor charcoal after being then transferred to activation furnace activation preparation activation.
S2, will be activated after super capacitor carbon add water process, then heated, formed charcoal slurry.
S3, cooling and stewing process are carried out to the charcoal slurry after heating, is then separated by solid-liquid separation by centrifugal treating, collects centrifugation
Liquid, filtering obtain solution of potassium carbonate.
S4, the solution of potassium carbonate of acquisition is subjected to heating concentration by multi-effect vacuum evaporator, using heating and repeatedly
Heating concentration is carried out, certain density potassium carbonate concentrated solution is obtained.
S5, by potassium carbonate concentrated solution after high-temperature heating is evaporated and is cooled down, by potassium carbonate crystallization be thermally dried, so
Potassium carbonate crystallization is obtained by recycling afterwards.
2. potassium carbonate recovery method in super capacitor carbon production according to claim 1, it is characterised in that: the activator
For the mixture of KOH and NaOH, the carbonized material is phenolic resin, and less than 450 DEG C, the solidification refers to the heating temperature of heating
Activator uniformly forms a variety of bonding states in carbonized material, activation furnace temperature control at 700 DEG C to 800 DEG C, heat preservation 1 to
3h, after being then cooled to 500 DEG C of temperature.
3. potassium carbonate recovery method in super capacitor carbon production according to claim 1, it is characterised in that: the step S2
Middle to add water to form charcoal slurry super capacitor carbon activated material, amount of water ratio is 1:5 to 1:8, and the charcoal slurry of formation is passed through vapor
The mode of circulation pipe conduction heats, and being heated to temperature is 80 to 100 DEG C.
4. potassium carbonate recovery method in super capacitor carbon production according to claim 1, it is characterised in that: the step S3
Solution of potassium carbonate concentration after middle centrifuge separation is 15 to 30%.
5. potassium carbonate recovery method in super capacitor carbon production according to claim 1, it is characterised in that: the step S4
Middle multi-effect vacuum evaporator be by the successive operation of vacuum pump, make vacuum cavitations in evaporator -0.05 to -
0.08MPa, it is 45-55% that solution of potassium carbonate is concentrated into concentration under condition of negative pressure.
6. potassium carbonate recovery method in super capacitor carbon production according to claim 1, it is characterised in that: the step S5
The middle solution of potassium carbonate by after concentration is pumped into Rollingscratchboarddrier, and vapor is passed through to the roller of Rollingscratchboarddrier
It is interior, by heating the moisture evaporation for the solution of potassium carbonate being adhered on roller, being dried to obtain potassium carbonate crystallization.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811574082.5A CN109437247A (en) | 2018-12-21 | 2018-12-21 | Potassium carbonate recovery method in the production of super capacitor carbon |
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| CN201811574082.5A CN109437247A (en) | 2018-12-21 | 2018-12-21 | Potassium carbonate recovery method in the production of super capacitor carbon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120924A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Recovery method of alkali activator for preparing activated carbon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184077A (en) * | 1996-12-06 | 1998-06-10 | 陈淑奇 | Ion exchange process for producing potassium nitrate |
| CN101481124A (en) * | 2008-12-22 | 2009-07-15 | 建德市大洋化工有限公司 | Production process of potassium carbonate |
| CN108163855A (en) * | 2018-03-26 | 2018-06-15 | 北京合众汇能科技有限公司 | A kind of method for preparing ultracapacitor activated carbon |
-
2018
- 2018-12-21 CN CN201811574082.5A patent/CN109437247A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184077A (en) * | 1996-12-06 | 1998-06-10 | 陈淑奇 | Ion exchange process for producing potassium nitrate |
| CN101481124A (en) * | 2008-12-22 | 2009-07-15 | 建德市大洋化工有限公司 | Production process of potassium carbonate |
| CN108163855A (en) * | 2018-03-26 | 2018-06-15 | 北京合众汇能科技有限公司 | A kind of method for preparing ultracapacitor activated carbon |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120924A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Recovery method of alkali activator for preparing activated carbon |
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Application publication date: 20190308 |