Method for producing chlorous acid aqueous solution by adsorption of chlorine dioxide
a chlorine dioxide technology, applied in the field of chlorous acid aqueous solution manufacturing by chlorine dioxide adsorption, can solve the problems of difficult manufacture of chlorous acid aqueous solution, inability to store in normal conditions, etc., and achieve the effect of convenient handling
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example 1
ring Example 1 of Chlorous Acid Aqueous Solution (CAAS A-1))
[0113]In Example 1, a chlorous acid aqueous solution was manufactured according to the following procedure based on the conditions for CAAS A-1 in (Production condition of chlorous acid aqueous solution).
[0114](Method)[0115](1) Table of blended ingredient d was loaded into 2.[0116](2) Table of blended ingredient a was loaded into 1. The pH of the aqueous solution A was 10.8.[0117](3) A tank containing 0.9%±0.1% chlorine dioxide gas was prepared for 3.[0118](4) 4 was put into operation.[0119](5) 5 was released open to allow chlorine dioxide gas to flow into 1 at a flow rate of 210 ppm / minute (210 ppm / min±40 ppm / min (660 mg·ClO2 / min to 530 mg·ClO2 / min)).[0120](6) 5 was closed after the gas has flowed in for 15 minutes.[0121](7) 4 was stopped.[0122](8) The mixture was left standing for 15 minutes.[0123](9) 4 was again put into operation, and (4)-(8) were repeated 3 to 4 times (actual total time of chlorine dioxide gas flowing ...
example 2
ring Example 1 of Chlorous Acid Aqueous solution formulation (CAAS A-1))
[0128]In Example 2, a chlorous acid aqueous solution formulation was manufactured according to the following procedure by using CAAS A-1 in Example 1.
[0129]Aqueous solution B was made based on the following.
TABLE 7Name of raw materialBlended amount(1)CAAS A-1686.28 g(2)Dipotassium hydrogenphosphate 14.00 g(3)Ion exchange water299.72 gTotal 1000 g
[0130]The pH at this time was 6.4.
TABLE 8Chlorous acid aqueous solution formulation A-1Tested itemSpecificationResultPotassiumWhen potassiumWhen potassiumpermanganatepermanganatepermanganate solutionsolution (1→300) is(1→300) was added to 5 mladded to 5 ml of theof the presentpresent productproduct (1→20), the(1→20), the mixturemixture turned reddishturns reddish purple.purple. When 1 ml ofWhen 1 ml of sulfuricsulfuric acid (1→20)acid (1→20) is addedwas added thereto, thethereto, the mixturemixture turned lightturns light yellow.yellow.UV spectrumAn aqueous solutionAn a...
example 3
ring Example 2 of Chlorous Acid Aqueous Solution (CAAS A-2))
[0132]In Example 3, a chlorous acid aqueous solution was manufactured according to the following procedure based on the conditions for CAARS A-2 in (Production condition of chlorous acid aqueous solution).
[0133](Method)[0134](1) Table of blended ingredient d was loaded into 2.[0135](2) Table of blended ingredient b was loaded into 1. The pH of the aqueous solution A was 8.0.[0136](3) A tank containing 0.9% ±0.1% chlorine dioxide gas was prepared for 3.[0137](4) 4 was put into operation.[0138](5) 5 was released open to allow chlorine dioxide gas to flow into 1 at a flow rate of 210 ppm / minute (210 ppm / min±40 ppm / min (660 mg·ClO2 / min to 530 mg·ClO2 / min)).[0139](6) 5 was closed after the gas had flowed in for 15 minutes.[0140](7) 4 was stopped.[0141](8) The mixture was left standing for 15 minutes.[0142](9) 4 was again put into operation, and (4)-(8) were repeated 2 to 3 times (actual total time of chlorine dioxide gas flowing...
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