GB/T 35212.4-2023Analysis and evaluation methods of gas and solution and desulfurization decarbonization and sulfur recovery for natural gas treating plant—Part 4: Determination of sodium、magnesium、calcium in alkanol amine desulfurization by ion chromatography (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document is GB/T 35212 "Analysis and evaluation methods for gas and solution in natural gas treatment plants, desulfurization, decarbonization and sulfur recovery" Part 4: GB/T 35212 has issued the following parts.

--- Part 1: Gas and solution analysis;

--- Part 2: Analysis of desulfurization and decarburization solvents;

---Part 3: Technical requirements and analysis and evaluation methods for sulfur recovery and tail gas treatment catalysts;

--- Part 4: Determination of sodium, magnesium and calcium ion composition in alcohol amine desulfurization solution by ion chromatography.

Introduction

During the production process of amine desulfurization and decarburization, solution pollution will be caused by various reasons. The metal cation sodium, magnesium, calcium ion in the desulfurization solution of p-alkanolamine The analysis of the subcomponents is to monitor the quality of the alcohol amine desulfurization solution and ensure the smooth operation of the amine desulfurization and decarburization production process. The content of these cations Quantity is one of the important indicators to judge the performance change of desulfurization solution.

GB/T 35212 "Analysis and Evaluation Methods of Gas and Solution in Natural Gas Treatment Plants and Desulfurization, Decarbonization and Sulfur Recovery" aims to standardize natural gas The technical standardization document proposed for gas purification production activities to ensure efficient production of natural gas is proposed to consist of 4 parts.

--- Part 1: Gas and solution analysis. The aim is to establish a general and operational analysis for natural gas processing plant gases and solutions evaluation method.

--- Part 2: Analysis of desulfurization and decarburization solvents. The objective is to establish operational analytical Evaluation methods, and the corresponding technical requirements.

--- Part 3: Sulfur recovery and tail gas treatment catalyst technical requirements and analysis and evaluation methods. intended for natural gas processing plants Sulfur recovery and tail gas treatment catalysts establish operable analysis and evaluation methods, and specify the corresponding technical requirements.

--- Part 4: Determination of sodium, magnesium and calcium ion composition in alcohol amine desulfurization solution by ion chromatography. intended for natural gas processing plants The determination of the metal cation content in the alcohol amine desulfurization solution establishes an operable analysis and evaluation method, and stipulates the corresponding technical technical requirements.

WARNING: This document does not address security issues related to its application. Before using this document, it is the user's responsibility to establish appropriate safety and Protective measures, and clarify its limited scope of use.

1 Scope

This document describes the principle of the test method, reagents and materials, instruments and Equipment, test procedures, test data processing and precision.

This document is applicable to the composition analysis of metal cations in alcohol amine desulfurization solution. The types and determination ranges of metal cations are shown in Table 1.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 6682 Analytical laboratory water specifications and test methods

3 Terms and Definitions

The following terms and definitions apply to this document.