CN105217728A - A kind of pH value of solution automatic control device based on ion exchange principle and using method thereof - Google Patents
A kind of pH value of solution automatic control device based on ion exchange principle and using method thereof Download PDFInfo
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- CN105217728A CN105217728A CN201510654704.5A CN201510654704A CN105217728A CN 105217728 A CN105217728 A CN 105217728A CN 201510654704 A CN201510654704 A CN 201510654704A CN 105217728 A CN105217728 A CN 105217728A
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Abstract
The invention provides a kind of pH value of solution automatic control device based on ion exchange principle and using method thereof, belong to chemical reaction automation field.It solve exist in existing pH control techniques the new impurity that easily induces one, cannot work in oxygen-free environment, problem that control accuracy is low.This device is made up of the assembly such as current stabilization pump, ion exchange resin and ion exchange column, pH probe, fluid container, pH controller.Ion in ion exchange resin and solution exchanges, and produces hydroxide ion or hydrogen ion and is transferred back in fluid container.PH value of solution scope sets in pH controller, pH controller can according to the on/off of the pH scope control current stabilization pump of setting, and when pH value of solution is in setting range, current stabilization pump cuts out, when pH value of solution is not at setting range, pH controller sends order, current stabilization pump operation, and ion-exchange occurs, hydrogen ion or hydroxide ion enter solution, after pH gets back to setting range, current stabilization pump cuts out, and realizes the automatic adjustment of pH.
Description
Technical field
The present invention relates to chemical reaction automatic control technology field.The pH that can be applied to chemical reaction in various industrial production and laboratory study automatically regulates or controls.
Background technology
In some reaction system, pH value of solution can change along with the carrying out of reaction.Such as, in the hydrolytic process of iron ion, iron ion can react with hydroxide ion and form ferric hydroxide precipitate, and hydrogen ion concentration raises, and pH value of solution reduces; Common cathodic reaction is as hydrionic reduction reaction, and in solution, hydrogen ion can be consumed, and causes hydroxide ion concentration to increase, and pH value of solution raises.
The change of pH value of solution has remarkably influenced to the reaction kinetics in chemical reaction and target product.Such as in the forming process of Carbonat film, under identical ferrous ion concentration, if pH raises, can be easy to form fine and close Carbonat film, if pH reduces, cause the carbon acid ion concentration in solution to reduce, be difficult to form stable Carbonat film.In the industrial production, preparing iron trichloride, aluminum chloride, ferrous chloride etc. all needs to carry out in stronger sour environment, if the pH in system raises, just can not get these target products.
In actual production, particularly for uniflux system, as oil-gas mining and oil-gas transportation, ducted pH value of solution change is also little.But, in laboratory simulation test process, because research system belongs to closed system, along with the generation of corrosive pipeline reaction, pH value of solution meeting noticeable change, causes laboratory simulation environment and actual production environment to produce larger difference, thus experimental result is not mated with field data.
Therefore, the device and method inventing a kind of pH value of solution controlled in chemical reaction is very necessary, the device particularly inventing a kind of automatic control and regulator solution pH for industrial production and experimental study significant.
At present, some controls the apparatus and method of pH value of solution automatically, but its shortcoming clearly: (1) current pH value of solution automatic control device is all realize automatically controlling the pH value of solution of system by automatic powder adding acid adding or alkaline solution, the membership that adds of acid or alkali introduces new ion or impurity to system.As added hydrogen chloride solution, pH value of solution can be made to decline, but introduce chlorion to system simultaneously; Add sodium hydroxide solution, can be that pH value of solution raises, but introduce sodium ion simultaneously.The introducing of these new ions or impurity, can bring interference to reaction system, affects the formation of target product or increases the purifying difficulty of target product; (2) for the reaction system in oxygen-free environment, add acid or alkali can increase the possibility that oxygen enters system, and then add the risk of production safety or the failure of an experiment.
So, invent a kind of efficient, safe pH value of solution automatic control device very necessary for control chemical reaction field.
Summary of the invention
The technical problem that the present invention solves is: the deficiency overcoming existing pH value of solution automatic control technology, provide a kind of pH value of solution automatic control system based on ion exchange principle and using method, the pH value of solution that can realize in chemical reaction controls automatically, accurately.Technical solution of the present invention is: ion-exchange module and pH automatic control module:
As Fig. 1, described ion-exchange module, for generation of the hydrogen ion needed for regulator solution pH or hydroxide ion, before test, hydrogen ion type ion exchange resin and hydroxyl type ion exchange resin are respectively charged into ion exchange column (2) and (8), and complete the assembling of two ion-exchange loops respectively: connect fluid container (6), ion exchange column (2), current stabilization pump (3) and fluid container (6) successively with stainless steel pipe (1), composition reduces pH loop; Connect fluid container (6), ion exchange column, (8) and current stabilization pump (9) and fluid container (6) successively with stainless steel pipe (1), composition raises pH loop; Current stabilization pump (3) and (9) are for delivered solution; Ion exchange column (2) or (8) provide place for ion exchange reaction, and the positively charged ion in solution and hydrogen ion type ion exchange resin exchange, and produce hydrogen ion and also enter solution; Negatively charged ion in solution and hydroxyl type ion exchange resin exchange, and produce hydroxide ion and enter solution;
Described pH automatic control module is used for the automatic control of the pH realizing solution in fluid container (6); PH probe (5) is for the pH of solution in monitoring liquid container (6); PH controller (7) is for setting pH scope, showing the pH of solution in fluid container (6) in real time, sending the on/off that order controls current stabilization pump (3) and (9), when the pH value of solution in fluid container (6) is in setting range, current stabilization pump (3) and current stabilization pump (9) are all in closing condition; When the pH value of solution in fluid container (6) is prescribed a time limit higher than on setting range, current stabilization pump (3) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (3) cuts out; Under the pH value of solution in fluid container (6) is lower than setting range in limited time, current stabilization pump (9) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (9) cuts out.Based on the using method of the pH value of solution automatic control system of ion exchange principle, it is characterized in that comprising the following steps:
A. hydrogen ion type exchange resin and hydroxide ion type exchange resin are respectively charged in ion exchange column (2) and (8);
B. fluid container (6), current stabilization pump (3), ion exchange column (2), fluid container (6) is connected successively with stainless steel pipe (1);
C. fluid container (6), current stabilization pump (9), ion exchange column (8), fluid container (6) is connected successively with stainless steel pipe (1);
D. in fluid container (6), required solution is injected, pH probe (5) is installed, connect the signal input interface of pH probe (5) and pH controller (7) with wire (4), connect the signal output interface of current stabilization pump (3) and pH controller (7) with wire; The signal output interface of current stabilization pump (9) and pH controller (7) is connected with wire;
E. in pH controller (7), setting needs the pH scope controlled, and current stabilization pump (3) and (9) are in closedown;
F. when the pH value of solution in fluid container (6) is prescribed a time limit higher than on setting range, current stabilization pump (3) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (3) cuts out;
G. prescribe a time limit under the pH value of solution in fluid container (6) is lower than setting range, current stabilization pump (9) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (9) cuts out.
The present invention's beneficial effect is compared with prior art:
A. the present invention is based on ion exchange principle, utilize the negatively charged ion in ion exchange resin and solution or positively charged ion to exchange, provide hydroxide ion or hydrogen ion, thus the pH of regulator solution, therefore, can not induce one new ion or other impurity.
B. the present invention adopts totally-enclosed system, produce or in experimentation without the need to adding new resin or solution, avoid impurity and pollutent enters reaction system, the pH value of solution be specially adapted to for anaerobic reaction environment controls automatically.
C. the pH of energy realization response system of the present invention accurately controls, and tolerance range is: set(ting)value ± 0.02pH, sees Fig. 2.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of control device of the present invention;
Fig. 2 adopts the present invention's control X65 steel at saturated CO
2pH result in solution corrosion process, probe temperature: 40 DEG C, initial pH is 4.00, normal atmosphere.
Embodiment
As Fig. 1 describes the structural principle of automatic control device of the present invention.Native system comprises ion-exchange module and pH automatic control module two parts:
Described ion-exchange module, for generation of the hydrogen ion needed for regulator solution pH or hydroxide ion, before test, hydrogen ion type ion exchange resin and hydroxyl type ion exchange resin are respectively charged into ion exchange column (2) and (8), and complete the assembling of two ion-exchange modules respectively: connect fluid container (6), ion exchange column (2), current stabilization pump (3) successively with stainless steel pipe (1); Fluid container (6), ion exchange column, (8) and current stabilization pump (9) is connected successively with stainless steel pipe (1); Current stabilization pump (3) and (9) are for delivered solution; Ion exchange column (2) or (8) provide place for ion exchange reaction, and the positively charged ion in solution and hydrogen ion type ion exchange resin exchange, and produce hydrogen ion and also enter solution; Negatively charged ion in solution and hydroxyl type ion exchange resin exchange, and produce hydroxide ion and enter solution;
Described pH automatic control module is used for the automatic control of the pH realizing solution in fluid container (6); PH probe (5) is for the pH of solution in monitoring liquid container (6); PH controller (7) is for setting pH scope, showing the pH of solution in fluid container (6) in real time, sending the on/off that order controls current stabilization pump (3) and (9), when the pH value of solution in fluid container (6) is in setting range, current stabilization pump (3) and current stabilization pump (9) are all in closing condition; When the pH value of solution in fluid container (6) is prescribed a time limit higher than on setting range, current stabilization pump (3) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (3) cuts out; Under the pH value of solution in fluid container (6) is lower than setting range in limited time, current stabilization pump (9) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (9) cuts out.
The use concrete steps of native system are as follows: be respectively charged in ion exchange column (2) and (8) by hydrogen ion type exchange resin and hydroxide ion type exchange resin; Fluid container (6), current stabilization pump (3), ion exchange column (2), fluid container (6) is connected successively with stainless steel pipe (1); Fluid container (6), current stabilization pump (9), ion exchange column (8), fluid container (6) is connected successively with stainless steel pipe (1); Required solution is injected in fluid container (6), pH probe (5) is installed, pH probe (5) and the signal input interface of pH controller (7) is connected, with wire respectively by current stabilization pump (3) and (9) and couple together from the signal output interface of pH controller (7) with wire (4); In pH controller (7), setting needs the pH scope controlled, and current stabilization pump (3) and (9) are in closedown; When the pH value of solution in fluid container (6) is prescribed a time limit higher than on setting range, current stabilization pump (3) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (3) cuts out; Under the pH value of solution in fluid container (6) is lower than setting range in limited time, current stabilization pump (9) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (9) cuts out.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (2)
1. based on a pH value of solution automatic control device for ion exchange principle, it is characterized in that: comprise ion-exchange and pH automatic control module two parts:
Described ion-exchange module, for generation of the hydrogen ion needed for regulator solution pH or hydroxide ion, before test, hydrogen ion type ion exchange resin and hydroxyl type ion exchange resin are respectively charged into ion exchange column (2) and (8), and complete the assembling of two ion-exchange loops respectively: connect fluid container (6), ion exchange column (2), current stabilization pump (3) and fluid container (6) successively with stainless steel pipe (1), composition reduces pH loop; Connect fluid container (6), ion exchange column, (8), current stabilization pump (9) and fluid container (6) successively with stainless steel pipe (1), composition raises pH loop; Current stabilization pump (3) and (9) are for delivered solution; Ion exchange column (2) or (8) provide place for ion exchange reaction, and the positively charged ion in solution and hydrogen ion type ion exchange resin exchange, and produce hydrogen ion and also enter solution; Negatively charged ion in solution and hydroxyl type ion exchange resin exchange, and produce hydroxide ion and enter solution;
Described pH automatic control module, for realizing the automatic control of the pH of solution in fluid container (6); PH probe (5) is for the pH of solution in monitoring liquid container (6); PH controller (7) is for setting pH scope, showing the pH of solution in fluid container (6) in real time, sending the on/off that order controls current stabilization pump (3) and (9), when the pH value of solution in fluid container (6) is in setting range, current stabilization pump (3) and current stabilization pump (9) are all in closing condition; Under the pH value of solution in fluid container (6) is lower than setting range in limited time, current stabilization pump (3) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (3) cuts out; When the pH value of solution in fluid container (6) is prescribed a time limit higher than on setting range, current stabilization pump (9) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (9) cuts out.
2., based on the using method of the pH value of solution automatic control device of ion exchange principle, it is characterized in that comprising the following steps:
A. hydrogen ion type exchange resin and hydroxide ion type exchange resin are respectively charged in ion exchange column (2) and (8);
B. fluid container (6), current stabilization pump (3), ion exchange column (2), fluid container (6) is connected successively with stainless steel pipe (1);
C. fluid container (6), current stabilization pump (9), ion exchange column (8), fluid container (6) is connected successively with stainless steel pipe (1);
D. in fluid container (6), required solution is injected, pH probe (5) is installed, connect the signal input interface of pH probe (5) and pH controller (7) with wire (4), connect the signal output interface of current stabilization pump (3) and pH controller (7) with wire; The signal output interface of current stabilization pump (9) and pH controller (7) is connected with wire;
E. in pH controller (7), setting needs the pH scope controlled, and current stabilization pump (3) and (9) are in closing condition;
F. when the pH value of solution in fluid container (6) is prescribed a time limit higher than on setting range, current stabilization pump (3) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (3) cuts out;
G. prescribe a time limit under the pH value of solution in fluid container (6) is lower than setting range, current stabilization pump (9) runs, until the pH value of solution in fluid container (6) gets back to setting range, current stabilization pump (9) cuts out.
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| CN201510654704.5A CN105217728A (en) | 2015-10-12 | 2015-10-12 | A kind of pH value of solution automatic control device based on ion exchange principle and using method thereof |
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Citations (5)
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|---|---|---|---|---|
| JPS5319148A (en) * | 1976-08-06 | 1978-02-22 | Toyota Motor Co Ltd | Ph adjustment method of electrolytic nickel plating solution |
| CN101270497A (en) * | 2008-05-16 | 2008-09-24 | 南京大学 | Regulating method for acidity basicity of feed liquid |
| CN202516542U (en) * | 2012-03-06 | 2012-11-07 | 美药星（南京）制药有限公司 | PH and temperature automatic control system for reaction kettle |
| CN103540690A (en) * | 2013-09-29 | 2014-01-29 | 山东西王糖业有限公司 | PH regulation method in high fructose corn syrup production process |
| WO2014170822A1 (en) * | 2013-04-16 | 2014-10-23 | Koninklijke Philips N.V. | An apparatus for preparing water with adjusted ph and method thereof |
-
2015
- 2015-10-12 CN CN201510654704.5A patent/CN105217728A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319148A (en) * | 1976-08-06 | 1978-02-22 | Toyota Motor Co Ltd | Ph adjustment method of electrolytic nickel plating solution |
| CN101270497A (en) * | 2008-05-16 | 2008-09-24 | 南京大学 | Regulating method for acidity basicity of feed liquid |
| CN202516542U (en) * | 2012-03-06 | 2012-11-07 | 美药星（南京）制药有限公司 | PH and temperature automatic control system for reaction kettle |
| WO2014170822A1 (en) * | 2013-04-16 | 2014-10-23 | Koninklijke Philips N.V. | An apparatus for preparing water with adjusted ph and method thereof |
| CN103540690A (en) * | 2013-09-29 | 2014-01-29 | 山东西王糖业有限公司 | PH regulation method in high fructose corn syrup production process |
Non-Patent Citations (1)
| Title |
|---|
| 周道容等: "用离子交换树脂控制压水堆一回路水的pH", 《核动力工程》 * |
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Application publication date: 20160106 |