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Test agent and test method for water content in aldehyde ketone

A testing method and testing agent technology, applied in chemical method analysis, measuring device, chemical analysis using titration method, etc., can solve the problem of long time consumption and so on

Inactive Publication Date: 2018-08-21
CHINA SHENHUA ENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present application is to provide a test agent and test method of water content in aldehydes and ketones, to solve the problem that the test method of water content in the prior art takes a long time

Method used

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  • Test agent and test method for water content in aldehyde ketone
  • Test agent and test method for water content in aldehyde ketone
  • Test agent and test method for water content in aldehyde ketone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Adopt Karl Fischer instrument to detect the water content in valeraldehyde, above-mentioned Karl Fischer instrument comprises titration container, titrant container and DM143-SC double platinum needle electrode, and above-mentioned titrant container comprises body and the titration head that is arranged on above-mentioned body, The above-mentioned DM143-SC double platinum needle electrode is fixed in the above-mentioned titration head. The above specific steps are as follows:

[0050] In the first step, the titration solvent is added to the above-mentioned titration vessel.

[0051] Specifically, a total of 50 ml of titration solvents, including 1-methoxy-2-propanol, imidazole and iodine bromide, were 70%, 15% and 15% by volume, respectively.

[0052] In the second step, the titrant is added to the above-mentioned titrant container.

[0053] Specifically, the titrant includes ethoxydiglycol, iodine, hydroiodic acid, imidazole, 2-methylimidazole and sulfur dioxide, the...

Embodiment 2

[0059] Adopt Karl Fischer instrument to detect the water content in valeraldehyde, above-mentioned Karl Fischer instrument comprises titration container, titrant container and DM143-SC double platinum needle electrode, and above-mentioned titrant container comprises body and the titration head that is arranged on above-mentioned body, The above-mentioned DM143-SC double platinum needle electrode is fixed in the above-mentioned titration head. The above specific steps are as follows:

[0060] In the first step, the titration solvent is added to the above-mentioned titration vessel.

[0061] Specifically, a total of 50 ml of titration solvents, including 1-methoxy-2-propanol, imidazole and iodine bromide, were 80%, 10% and 10% by volume, respectively.

[0062] In the second step, the titrant is added to the above-mentioned titrant container.

[0063] Specifically, the titrant includes ethoxydiglycol, iodine, hydroiodic acid, imidazole, 2-methylimidazole and sulfur dioxide, the...

Embodiment 3

[0069] Adopt Karl Fischer instrument to detect the water content in valeraldehyde, above-mentioned Karl Fischer instrument comprises titration container, titrant container and DM143-SC double platinum needle electrode, and above-mentioned titrant container comprises body and the titration head that is arranged on above-mentioned body, The above-mentioned DM143-SC double platinum needle electrode is fixed in the above-mentioned titration head. The above specific steps are as follows:

[0070] In the first step, the titration solvent is added to the above-mentioned titration vessel.

[0071] Specifically, a total of 50 ml of titration solvents, including 1-methoxy-2-propanol, imidazole, and iodine bromide, were 90%, 5%, and 5% by volume, respectively.

[0072] In the second step, the titrant is added to the above-mentioned titrant container.

[0073] Specifically, the titrant includes ethoxydiglycol, iodine, hydroiodic acid, imidazole, 2-methylimidazole and sulfur dioxide, the...

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Abstract

The invention provides a test agent and a test method for the water content in aldehyde ketone. The test agent comprises a titration solvent and a titrant, wherein the titration solvent comprises methoxy alcohol, imidazole and iodine bromide; the titrant comprises oxydiethanol, iodine, hydroiodic acid, imidazole, an imidazole derivative and sulfur dioxide. The test agent can quickly detect the water content in aldehyde ketone, greatly saves the test time, and avoids a problem that the system is slow or unable to achieve balance due to the conventional alcohol reacts with aldehyde ketone in a sample to be tested.

Description

technical field [0001] The application relates to the field of chemical industry, in particular, to a test agent and a test method for water content in aldehydes and ketones. Background technique [0002] Valeraldehyde is formed by the reaction of butene with carbon monoxide and hydrogen. Most of the products are straight-chain n-valeraldehydes, however, small amounts of branched-chain 2-methylbutyraldehyde and 3-methylbutyraldehyde, self-polymers of propane and other aldehydes are also formed. These reactions occur at a pressure of 1.4-1.2 MPa (absolute pressure), at a temperature of 75° C., and in the presence of a rhodium-based catalyst of the same nature. [0003] These reactions are carried out in a series of three stirred liquid phase reactors, which include rhodium catalyst, NORMAX ligand, reactants, products and by-products. One sampling point is set up for each reactor, namely S1514, S1515, and S1530. The main analysis items include C4, 2-methylbutyraldehyde, 3-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/168
Inventor 张雅欣伏江峰余占武马翔宋涛王冬梅王鑫
Owner CHINA SHENHUA ENERGY CO LTD
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