CN105149016A - Method for achieving replacement reaction through resin-free autologous bed ion exchange method - Google Patents
Method for achieving replacement reaction through resin-free autologous bed ion exchange method Download PDFInfo
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- CN105149016A CN105149016A CN201510723408.6A CN201510723408A CN105149016A CN 105149016 A CN105149016 A CN 105149016A CN 201510723408 A CN201510723408 A CN 201510723408A CN 105149016 A CN105149016 A CN 105149016A
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Abstract
The invention relates to a method for achieving a replacement reaction through an ion exchange bed built through replacement reaction raw materials without using ion exchange resin, in particular to an autologous bed ion exchange method. The method has the advantages of being simple in equipment, low in investment, large in exchange capacity, high in production efficiency, high in concentration of recycled by-products, free of bed regeneration and consumption and pollution of regenerative agents and suitable for various replacement reactions and adopting inorganic substances and organic substances. Exchange equipment can include a fixed bed, a flowing bed and other equipment forms and can be suitable for various production processes.
Description
Technical field
The invention belongs to the technical field of Chemical Engineering, be specially the ion-exchange realizing metathesis reaction, but be different from ion-exchange in general sense, because in the method, do not make spent ion exchange resin.
The present invention relates to a kind of ion-exchange not making spent ion exchange resin.The method uses one of raw material of metathesis reaction as the bed body material building ion exchange bed, the another kind of raw material preparation ion exchanged soln of metathesis reaction, by the relative motion of ion exchange liquid in ion exchange bed, realize ion-exchange, effectively complete metathesis reaction.This method has all advantages of conventional ion exchange process, and as equipment is simple, product purity is high etc., and but avoid many shortcomings of conventional ion exchange process, such as exchange capacity is little, and production capacity is low; The exchange waste liquid (solution by-product) of large volume low-concentration is difficult to process or consumes a large amount of heat energy; There is no the trouble of resin regeneration, do not consume actified solution yet, avoid the environmental pollution regenerating and cause.Etc..
Background technology
The main feature realizing the ion-exchange of metathesis reaction is at present: 1. make spent ion exchange resin as bed body material, realize metathesis reaction by the ion-exchange of electrolyte solution and ion exchange resin.2. its major defect is: (1) ion exchange resin is expensive, and exchange capacity is little, and therefore bring efficiency low yield little, device is huge, equipment investment height etc. shortcoming.(2) after ion exchanged soln exchanges, generate a large amount of low concentration solution, reclaim power consumption greatly, increase cost.(3) ion exchange resin needs regular regeneration, not only consumes a large amount of regenerative raw materials, and causes a large amount of regenerative wastewater contaminated environment.These shortcomings, limit its applying industrially.
The present invention be for conventional ion exchange process one improve, its principal character is, in ion-exchange, does not make spent ion exchange resin, directly uses one of two kinds of raw materials in metathesis reaction, as the bed body material of formation ion exchange bed.Therefore the exchange capacity avoiding conventional ion exchange process is low, and production efficiency ground, installation cost is high, produces a large amount of byproduct weak solution and regenerative wastewater etc. shortcoming.Become a device simple, efficiency is very high, does not have the ion-exchange process polluted.
Summary of the invention
The measure of technical solution problem
Definition: do not make spent ion exchange resin, directly uses one of two kinds of raw materials of metathesis reaction to build ion exchange bed, carries out ion-exchange, to realize the method for metathesis reaction, be referred to as autologous bed ion-exchange with the solution of another kind of raw material.
Basic device is by one of reaction raw materials as becoming bed material, and formation ion exchange bed, by realizing ion-exchange with the haptoreaction of ion exchanged soln.
Ion exchange bed has two kinds of primary structures: 1, fixed bed, and become bed material to fix, ion exchanged soln carries out relative motion through bed.2, thermopnore, does relative motion the while of becoming bed material and exchange solution round about.The former is suitable for the Batch Process of batch type, and the latter is suitable for continuous seepage.
Autologous bed ion-exchange unit can be varied, but their common characteristic is: have the solid phase of in return bed and the liquid phase of in return solution, has the relative motion between two-phase (wherein, solid phase can motionless or flowing).The reaction realized belongs to metathesis reaction.As for the shape of reaction bed, whether material and structure, arrange stirring or separator, and arrange stirring and the separator of what form, then can be ever-changing according to actual conditions.
The beneficial effect obtained is: (1) does not use expensive, and therefore the ion exchange resin that exchange capacity is very low, greatly reduce plant investment, improve production efficiency.(2) solution by-product concentration can reach close to saturated concentration, and reclaim byproduct easy, energy consumption is very low.(3) without trouble and the problem of environmental pollution of ion exchange resin regeneration.
This method is almost applicable to all metathesis reactions, no matter is inorganic matter or organic matter.
The water outlet (solution by-product containing high concentration) of ion-exchange can use evaporation and concentration, Chemical Decomposition, electrodialysis, and any method such as UF membrane reclaims accessory substance, realizes ion exchanged soln regeneration.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
1 one, accompanying drawing uses autologous bed ion-exchange from the process chart of ammonium dihydrogen phosphate (ADP) and KCl production potassium dihydrogen phosphate.
Wherein 1 is phosphorus ammonium dosage bunker, here sizes mixing with phosphorus ammonium raw material, or chemically generates phosphor ammonium slurry, then with transport pump to the autologous bed ion exchanger 2 of fixed bed, precipitation formed ion exchange bed, liquor abstraction enters ingredient water circulating slot 3, circular batching.The ion exchanged soln of regeneration dissolves and refines in benefit potassium groove 7, remove heavy metal and arsenic etc. harmful substance, after reaching the concentration of potassium oxide 180g/l, pump into ion exchanger 2 with pump, rising with the speed current stabilization of 0.5-1.0 millimeter per second, carrying out ion-exchange with becoming bed material.Exchanging raffinate enters after recover 6 reclaims ammonium chloride, enters to mend potassium groove 7 and mend qualified the continuations use of potassium.Qualified potassium dihydrogen phosphate slip is regularly extracted out from ion-exchange motor spindle, dries packaging product through centrifuge 4.Crystalline mother solution returns ion exchanger and carries out ion-exchange.
The process of producing other products is similar.
Claims (4)
1. one kind realizes the autologous bed ion-exchange of metathesis reaction, its principal character does not make spent ion exchange resin, but use the solid-phase of one of two kinds of metathesis feedstocks to form the bed body material of ion-exchange unit, the solution of another kind of raw material forms ion exchanged soln, the motion that contacts with each other realizes ion exchange process, such exchange bed can realize very large exchange capacity, very high solution by-product concentration, and does not need regeneration process.
2. based on the equipment of claim 1, solid phase wherein keeps motionless in exchange process, and ion exchange liquid, relative to solid phase contact flow, is fixed bed ion exchanger, is applicable to batch-type and produces.
3. based on the equipment of claim 1, solid phase wherein keeps flowing in exchange process, and contact flow reverse with ion exchange liquid is thermopnore ion exchanger, is applicable to continous way and produces.
4., based on the equipment of claim 1, can add as required in autologous bed ion exchanger or not add various forms of mixing plant or solid-liquid separating equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723408.6A CN105149016A (en) | 2015-10-29 | 2015-10-29 | Method for achieving replacement reaction through resin-free autologous bed ion exchange method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723408.6A CN105149016A (en) | 2015-10-29 | 2015-10-29 | Method for achieving replacement reaction through resin-free autologous bed ion exchange method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105149016A true CN105149016A (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510723408.6A Pending CN105149016A (en) | 2015-10-29 | 2015-10-29 | Method for achieving replacement reaction through resin-free autologous bed ion exchange method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120916A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Method for modifying molecular sieve by using multivalent noble metal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083034A (en) * | 1992-07-13 | 1994-03-02 | 成都科技大学 | The production method of ammonium potassium dihydrogen phosphate |
| CN103319254A (en) * | 2013-06-28 | 2013-09-25 | 安徽嘉联生物科技有限公司 | Recycling method of monopotassium phosphate mother liquor produced by double decomposition reaction |
-
2015
- 2015-10-29 CN CN201510723408.6A patent/CN105149016A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083034A (en) * | 1992-07-13 | 1994-03-02 | 成都科技大学 | The production method of ammonium potassium dihydrogen phosphate |
| CN103319254A (en) * | 2013-06-28 | 2013-09-25 | 安徽嘉联生物科技有限公司 | Recycling method of monopotassium phosphate mother liquor produced by double decomposition reaction |
Non-Patent Citations (3)
| Title |
|---|
| 包传平等: "循环复分解法制备磷酸二氢钾的研究", 《武汉工程大学学报》 * |
| 李兴旺等: "《水处理工程技术》", 31 March 2007, 中国水利水电出版社 * |
| 李学礼等: "《水文地球化学》", 30 November 2010, 原子能出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120916A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Method for modifying molecular sieve by using multivalent noble metal |
| CN113120916B (en) * | 2019-12-31 | 2022-10-11 | 中国石油化工股份有限公司 | Method for modifying molecular sieve by using multivalent noble metal |
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Application publication date: 20151216 |