CN104692421A - Recovery treatment technique of alumino silica gel waste liquid - Google Patents
Recovery treatment technique of alumino silica gel waste liquid Download PDFInfo
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- CN104692421A CN104692421A CN201510045581.5A CN201510045581A CN104692421A CN 104692421 A CN104692421 A CN 104692421A CN 201510045581 A CN201510045581 A CN 201510045581A CN 104692421 A CN104692421 A CN 104692421A
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- waste liquid
- filtrate
- silica gel
- alumino silica
- processing technique
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Abstract
The invention discloses a recovery treatment technique of an alumino silica gel waste liquid, which comprises the following steps: (1) pumping the alumino silica gel waste liquid into an elevated tank V101, flowing into a stirring kettle through a metering tank, and adding macadam ash into the stirring kettle through a baiting bin feeding machine; (2) stirring the waste liquid in the stirring kettle to react for 20 minutes, and filtering the reaction solution with a band filter to remove slag, thereby obtaining a filtrate 1; and (3) sending the filtrate into a calcium removal kettle via an elevated tank V202, meanwhile, adding sodium carbonate to remove calcium ions in the filtrate 1, reacting, and filtering with a band filter to remove slag, thereby obtaining a filtrate 2.
Description
Technical field
The present invention relates to technical field of rubber production, be specifically related to a kind of recovery processing technique of alumino silica gel waste liquid.
Background technology
At preparation NaY molecular sieve { Na
56[(AlO
2)
56(SiO2)
136] xH
2o } in production process, alumino silica gel workshop section produces a large amount of waste liquid, and be the sodium sulfate of about 5.5% containing massfraction in waste liquid, also have a small amount of silicate ion and meta-aluminic acid radical ion in addition.If the sodium sulfate in alumino silica gel waste liquid rationally can be recycled, be translated into sodium hydroxide, and sodium hydroxide steam unnecessary in enterprise is concentrated into the solution that massfraction is about 30%, a sodium hydroxide solution part after then concentrating is back to prepares sodium metaaluminate technique, and a part is used for the ammonia nitrogen waste water in other operation of stripping.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of recovery processing technique of alumino silica gel waste liquid.
The technical problem that the present invention solves can realize by the following technical solutions: a kind of recovery processing technique of alumino silica gel waste liquid, comprises the steps:
(1) flow into stirring tank by scale tank after alumino silica gel waste liquid pump being squeezed into header tank V101, rubble ash is joined in stirring tank by blanking bin feeding machine.
(2) by the waste liquid in stirring tank through stirring reaction after 20 minutes, reaction solution band filter carries out filter cleaner, obtains filtrate 1.
(3) filtrate 1 is entered deliming still through header tank V202, add sodium carbonate simultaneously and removed the calcium ion contained in filtrate 1, after reaction, carry out filter cleaner by band filter, obtain filtrate 2.
(4) filtrate 2 is squeezed into vapo(u)rization system with pump and is concentrated, and after three-effect evaporation and condensation, concentrated solution is sent to whizzer and carried out fractional crystallization thing sodium sulfate.
Preferably, the starting material of described recovery processing technique comprise alumino silica gel waste liquid, technical grade lime and sodium carbonate.
Preferably, the processing units of described recovery processing technique is provided with stirred autoclave, deliming still, filter, impeller pump, waste liquid feeding pump, pipeline, filtrate feeding pump, vaporizer and whizzer.
Beneficial effect is: the recovery processing technique of this alumino silica gel waste liquid utilizes lime method to reclaim the sodium sulfate in alumino silica gel waste liquid, rubble ash is added in alumino silica gel waste liquid, lime and water react and generate calcium hydroxide, calcium hydroxide reacts through ionization and sodium sulfate and generates sodium hydroxide and calcium sulfate precipitation, owing to being subject to the restriction of calcium hydroxide and calcium sulfate solubility product, complete for ensureing calcium ions precipitate, sodium carbonate is added for further removal in filtrate, sodium hydroxide solution after again filtering can be back to the preparation of sodium metaaluminate, also can be used for stripping ammonia nitrogen waste water.Process alumino silica gel waste liquid with lime method like this, not only solve the emission problem of alumino silica gel waste liquid, and be that medium fully utilizes waste liquid with sodium sulfate, also for enterprise provides the object of an effective environmentally friendly operational path.
Embodiment
embodiment:
A recovery processing technique for alumino silica gel waste liquid, comprises the steps: that (1) flows into stirring tank by scale tank after alumino silica gel waste liquid pump is squeezed into header tank V101, joins in stirring tank by rubble ash by blanking bin feeding machine; (2) by the waste liquid in stirring tank through stirring reaction after 20 minutes, reaction solution band filter carries out filter cleaner, obtains filtrate 1; (3) filtrate 1 is entered deliming still through header tank V202, add sodium carbonate simultaneously and removed the calcium ion contained in filtrate 1, after reaction, carry out filter cleaner by band filter, obtain filtrate 2; (4) filtrate 2 is squeezed into vapo(u)rization system with pump and is concentrated, after three-effect evaporation and condensation, concentrated solution is sent to whizzer and is carried out fractional crystallization thing sodium sulfate, the starting material of described recovery processing technique comprise alumino silica gel waste liquid, technical grade lime and sodium carbonate, and the processing units of described recovery processing technique is provided with stirred autoclave, deliming still, filter, impeller pump, waste liquid feeding pump, pipeline, filtrate feeding pump, vaporizer and whizzer.
In the present invention, owing to containing a small amount of calcium ion in sodium hydroxide solution, the sodium hydroxide solution of calcium ions has the phenomenon that scabs in concentrated, simultaneously transporting and calcified material and blocking pipe and nozzle can be formed during stripping ammonia nitrogen waste water, therefore must removing calcium ion a small amount of in sodium hydroxide solution, carrying out deliming by adding a certain amount of sodium carbonate in reaction solution.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a recovery processing technique for alumino silica gel waste liquid, is characterized in that: comprise the steps:
(1) flow into stirring tank by scale tank after alumino silica gel waste liquid pump being squeezed into header tank V101, rubble ash is joined in stirring tank by blanking bin feeding machine;
(2) by the waste liquid in stirring tank through stirring reaction after 20 minutes, reaction solution band filter carries out filter cleaner, obtains filtrate 1;
(3) filtrate 1 is entered deliming still through header tank V202, add sodium carbonate simultaneously and removed the calcium ion contained in filtrate 1, after reaction, carry out filter cleaner by band filter, obtain filtrate 2;
(4) filtrate 2 is squeezed into vapo(u)rization system with pump and is concentrated, and after three-effect evaporation and condensation, concentrated solution is sent to whizzer and carried out fractional crystallization thing sodium sulfate.
2. the recovery processing technique of a kind of alumino silica gel waste liquid according to claim 1, is characterized in that: the starting material of described recovery processing technique comprise alumino silica gel waste liquid, technical grade lime and sodium carbonate.
3. the recovery processing technique of a kind of alumino silica gel waste liquid according to claim 1, is characterized in that: the processing units of described recovery processing technique is provided with stirred autoclave, deliming still, filter, impeller pump, waste liquid feeding pump, pipeline, filtrate feeding pump, vaporizer and whizzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045581.5A CN104692421A (en) | 2015-01-29 | 2015-01-29 | Recovery treatment technique of alumino silica gel waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045581.5A CN104692421A (en) | 2015-01-29 | 2015-01-29 | Recovery treatment technique of alumino silica gel waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104692421A true CN104692421A (en) | 2015-06-10 |
Family
ID=53340040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510045581.5A Pending CN104692421A (en) | 2015-01-29 | 2015-01-29 | Recovery treatment technique of alumino silica gel waste liquid |
Country Status (1)
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| CN (1) | CN104692421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923472A (en) * | 2019-12-13 | 2020-03-27 | 南方科技大学 | Recovery process for recovering aluminum oxide powder from heat-conducting silica gel waste |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996016901A1 (en) * | 1994-11-25 | 1996-06-06 | Occidental Chemical Corporation | Process for making chromium-free orthorhombic sodium sulfate |
| CN1634764A (en) * | 2003-12-25 | 2005-07-06 | 中国石油化工股份有限公司 | Process for preparing NaY molecular sieve by using synthetic mother liquor |
-
2015
- 2015-01-29 CN CN201510045581.5A patent/CN104692421A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996016901A1 (en) * | 1994-11-25 | 1996-06-06 | Occidental Chemical Corporation | Process for making chromium-free orthorhombic sodium sulfate |
| CN1634764A (en) * | 2003-12-25 | 2005-07-06 | 中国石油化工股份有限公司 | Process for preparing NaY molecular sieve by using synthetic mother liquor |
Non-Patent Citations (1)
| Title |
|---|
| 周益辉: "硅铝胶废液回收利用研究与工艺设计", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923472A (en) * | 2019-12-13 | 2020-03-27 | 南方科技大学 | Recovery process for recovering aluminum oxide powder from heat-conducting silica gel waste |
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Application publication date: 20150610 |
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