CN102557078B - Method for reducing aluminum impurity content in primary saline water in ionic membrane caustic soda - Google Patents
Method for reducing aluminum impurity content in primary saline water in ionic membrane caustic soda Download PDFInfo
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- CN102557078B CN102557078B CN2011104551442A CN201110455144A CN102557078B CN 102557078 B CN102557078 B CN 102557078B CN 2011104551442 A CN2011104551442 A CN 2011104551442A CN 201110455144 A CN201110455144 A CN 201110455144A CN 102557078 B CN102557078 B CN 102557078B
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Abstract
The invention relates to a method for reducing aluminum impurity content in primary saline water in ionic membrane caustic soda. In the method, two weak-acid acrylic acid series cation exchange resin towers are added behind the primary saline water and used for processing the saline water before the saline water is fed into a chelating resin tower, so that the content of aluminum ions is reduced to a range required by an operation index of an ionic membrane, and the requirements of normal production are met.
Description
Technical field
The present invention relates to a kind of method that reduces aluminium foreign matter content in salt solution, especially a kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine.
Background technology
In ion film caustic soda, the existence of aluminium in salt solution, can form double salt with silicon-dioxide, calcium ion and sodium ion, is deposited on the cathode side of film, strengthens the resistance of ionic membrane, causes membrane voltage to raise, and make the decrease in efficiency of ionic membrane, increased production cost.
Summary of the invention
The invention provides a kind of method of aluminium foreign matter content in primary brine that reduces in ion film caustic soda, after primary brine, increase by two acidulous acrylic acid's cation exchange resin towers, aluminum ion in primary brine is carried out to adsorption treatment, aluminium composition is down in ionic membrane operating index claimed range, has met the requirement of normal production.
A kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to the aluminium composition of getting from the primary brine workshop after the processing primary brine at 400-600 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 10-30L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of 2 exchange resin towers, salt solution is under the effect of pump, by spinner-type flowmeter and accurate filter, from first exchange resin tower top adverse current, enter the tower of filling the 2Kg resin and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of first resin tower, from second exchange resin tower top adverse current, enter the tower of filling the 2Kg resin and carry out the absorption processing again, salt brine solution after treatment flows out from the bottom of second resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of second exchange resin tower bottom, after measuring aluminum ion in salt solution and being greater than 60 μ g/L, resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
Wherein the ion exchange resin in two resin towers is acidulous acrylic acid's cation exchange resin, is 111, D111, and one or both models in 112, KB-1 all can be bought in Jinan China star resin company limited or chemical plant, Plain, Cangzhou.
The present invention adopts the control of the techniques such as two exchange resin couplings and flow, the aluminium composition in salt solution can be down to after processing to 30-60 μ g/L, and the amount of processing primary brine is the 300-400L/Kg resin, meets the requirement of normal production.
The accompanying drawing explanation
Fig. 1 is schema of the present invention.
Brine feed groove 1, pump 2, spinner-type flowmeter 3, accurate filter 4,5, the second exchange resin towers 6 of first exchange resin tower, the salt solution groove 7 that connects material, thief hole 8, tensimeter 9.
Embodiment
Embodiment 1:
A kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to the aluminium composition of getting from the primary brine workshop after the processing primary brine at 400 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 10L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of 2 exchange resin towers, salt solution is under the effect of pump, pass through spinner-type flowmeter, accurate filter, from first exchange resin tower top adverse current, enter the tower of filling the 2Kg111 Zeo-karb and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of first resin tower, from second exchange resin tower top adverse current, enter the tower of filling the 2KgD111 Zeo-karb and carry out the absorption processing again, salt brine solution after treatment flows out from the bottom of second resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of second exchange resin tower bottom, after measuring aluminum ion in salt solution and being greater than 60 μ g/L, resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
After processing, the aluminium composition in salt solution can be down to 52 μ g/L, the amount that can process primary brine is the 334L/Kg resin.
Embodiment 2:
A kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to the aluminium composition of getting from the primary brine workshop after the processing primary brine at 500 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 20L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of 2 exchange resin towers, salt solution is under the effect of pump, pass through spinner-type flowmeter, accurate filter, from first exchange resin tower top adverse current, enter the tower of filling the 2Kg112 Zeo-karb and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of first resin tower, from second exchange resin tower top adverse current, enter the tower of filling the 2KgKB-1 Zeo-karb and carry out the absorption processing again, salt brine solution after treatment flows out from the bottom of second resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of second exchange resin tower bottom, after measuring aluminum ion in salt solution and being greater than 60 μ g/L, resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
Aluminium composition after processing in salt solution is down to 31 μ g/L, and the amount of processing primary brine is the 395L/Kg resin.
Embodiment 3:
A kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to the aluminium composition of getting from the primary brine workshop after the processing primary brine at 600 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 30L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of 2 exchange resin towers, salt solution is under the effect of pump, pass through spinner-type flowmeter, accurate filter, from first exchange resin tower top adverse current, enter the tower of filling the 2KgD111 Zeo-karb and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of first resin tower, from second exchange resin tower top adverse current, enter the tower of filling the 2Kg112 Zeo-karb and carry out the absorption processing again, salt brine solution after treatment flows out from the bottom of second resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of second exchange resin tower bottom, when measuring aluminum ion in salt solution and being greater than 60 μ g/L, resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
After processing, the aluminium composition in salt solution can be down to 36 μ g/L, the amount that can process primary brine is the 380L/Kg resin.
Embodiment 4:
A kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to the aluminium composition of getting from the primary brine workshop after the processing primary brine at 520 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 35L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of exchange resin tower, salt solution is under the effect of pump, pass through spinner-type flowmeter, accurate filter, from exchange resin tower top adverse current, enter the tower of filling 2Kg KB-1 Zeo-karb and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of exchange resin tower bottom, after measuring aluminum ion in salt solution and being greater than 60 μ g/L, the resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
Aluminium composition after processing in salt solution is down to 68 μ g/L, and the amount of processing primary brine is the 317L/Kg resin.
Embodiment 5:
A kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to the aluminium composition of getting from the primary brine workshop after the processing primary brine at 610 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 8 L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of exchange resin tower, salt solution is under the effect of pump, pass through spinner-type flowmeter, accurate filter, from exchange resin tower top adverse current, enter the tower of filling 2Kg 111 Zeo-karbs and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of exchange resin tower bottom, after measuring aluminum ion in salt solution and being greater than 60 μ g/L, the resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
Aluminium composition after processing in salt solution is down to 76 μ g/L, and the amount of processing primary brine is the 272L/Kg resin.
From embodiment, can find out that embodiment 2 effects are best, embodiment 1 and 3 takes second place, embodiment 5,6 is not within this patent processing range, effect is poor, therefore two kinds of resin absorption adopting of this patent and the method for flow technique coupling, aluminium composition in primary brine is reduced, process the salt water yield more, meet the needs of production.
Claims (1)
1. one kind is reduced in ion film caustic soda the method for aluminium foreign matter content in primary brine, it is characterized by: a kind ofly reduce in ion film caustic soda the method for aluminium foreign matter content in primary brine, the brine feed groove is filled it up with to aluminium composition after the processing of getting from the primary brine workshop at the primary brine of 500 μ g/L, open brine feed bottom land valve, open fresh feed pump, slowly open the valve of spinner-type flowmeter below, the maintenance flow is 20L/h, open again afterwards the accurate filter terminal valve, then open the terminal valve of 2 exchange resin towers, salt solution is under the effect of pump, pass through spinner-type flowmeter, accurate filter, from first exchange resin tower top adverse current, enter the tower of filling the 2kg112 Zeo-karb and carry out the absorption processing, salt brine solution after treatment flows out from the bottom of first resin tower, from second exchange resin tower top adverse current, enter the tower of filling the 2kgKB-1 Zeo-karb and carry out the absorption processing again, salt brine solution after treatment flows out from the bottom of second resin tower, enter the salt solution groove that connects material, in treating processes, timing is from the thief hole sampling analysis of second exchange resin tower bottom, after measuring aluminum ion in salt solution and being greater than 60 μ g/L, resin absorption in resin tower, near saturated, carries out continuing to process the aluminum ion in primary brine after manipulation of regeneration to the resin in resin tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104551442A CN102557078B (en) | 2011-12-31 | 2011-12-31 | Method for reducing aluminum impurity content in primary saline water in ionic membrane caustic soda |
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| CN2011104551442A CN102557078B (en) | 2011-12-31 | 2011-12-31 | Method for reducing aluminum impurity content in primary saline water in ionic membrane caustic soda |
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| CN102557078A CN102557078A (en) | 2012-07-11 |
| CN102557078B true CN102557078B (en) | 2013-11-27 |
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| CN110790287B (en) * | 2019-12-10 | 2022-05-17 | 昊华宇航化工有限责任公司 | Method for reducing content of aluminum ions in primary brine produced by ionic membrane caustic soda |
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Address after: 330300 Yangjialing, Yongxiu County, Jiujiang City, Jiangxi Province Patentee after: JIANGXI BLUESTAR XINGHUO ORGANIC SILICONE Co.,Ltd. Address before: 330319 Spark Industrial Park, Yongxiu County, Jiujiang City, Jiangxi Province Patentee before: Jiangxi Star-Fire Silicone Factory of Bluestar New Chemical Materials Co.,Ltd. |
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