Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas

An amino acid-containing, detection method technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of corrosion and blockage of the analysis system, complex analysis process, easy corrosion and blockage of the analysis system, etc., to reduce corrosion, analyze Fast, long-term stable operation effect

Active Publication Date: 2012-07-04
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The task of the present invention is to provide a wet detection method for ammonia and hydrogen sulfide in acid-containing gas, which has the advantages of simple and safe operation, fast analysis, accurate and reliable results, and avoids damage to the analysis system when hydrogen sulfide, ammonia and water coexist. Corrosion and clogging, ensuring the normal and stable operation of the system for a long time, etc., to overcome the shortcomings of the existing analysis methods that the analysis system is easy to corrode and clog, and the analysis process is complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas
  • Detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas
  • Detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 It is a schematic diagram of the analysis process of ammonia and hydrogen sulfide in wet acid-containing gas. Calcium carbide and molecular sieves are packed in sections with an inner diameter of 30mm and a length of 180mm in stainless steel tube 5, and the height ratio of the two is 4:1. The gas outlet 8 of the stainless steel tube is connected to the sample inlet of the gas chromatograph 9 through a pipeline, and the gas inlet 4 of the stainless steel tube is connected to a nitrogen bottle filled with a purity of 99.99% through a pipeline, and nitrogen is purged for standby.

[0056] After the sampling gas bag 1 is replaced three times with hydrogen gas, it is filled with hydrogen gas which is about 1 / 3 of the volume of the gas bag, and then the gas sample is diluted with the sampling gas bag filled with hydrogen gas. Connect the sampling gas bag 1 filled with the gas sample to be tested diluted by hydrogen with the gas inlet 4 of the stainless steel tube thr...

Embodiment 2

[0059] Calcium carbide and zeolite are packed in sections into a stainless steel tube 5 with an inner diameter of 25 mm and a length of 250 mm, and the height ratio of the two is 5:1. The gas outlet 8 of the stainless steel tube is connected to the sample inlet of the gas chromatograph 9 through a pipeline, and the gas inlet 4 of the stainless steel tube is connected to a nitrogen bottle filled with a purity of 99.99% through a pipeline, and nitrogen is purged for standby.

[0060] After the sampling gas bag 1 is replaced with hydrogen three times, it is filled with hydrogen gas which is about 1 / 4 of the volume of the gas bag, and then the gas sample is diluted with the sampling gas bag filled with hydrogen gas. Connect the sampling gas bag 1 filled with the gas sample to be tested diluted by hydrogen with the gas inlet 4 of the stainless steel tube through the pipeline, open the valve 3 at the mouth of the sampling gas bag, and the gas sample to be tested diluted by hydrogen e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas. According to the detection method, hydrogen gas is used for diluting sample gas so that the concentration of ammonia and hydrogen sulfide ingredients in the sample gas is reduced to be lower than the saturated crystallization concentration, the problem of system blockage caused by generated composite ammonium salt solids is solved, simultaneously, because the hydrogen gas for diluting is carrier gas for color spectrum, a peak is not generated in a chromatogram map, the dilutability on the sample gas cannot influence analysis results, and high-content gas can be analyzed. Because the sample gas is subjected to deep dewatering treatment, the analysis system corrosion caused by thehydrogen sulfide ingredients in the sample gas is greatly reduced, and the long-period and stable operation of an instrument is ensured. Macromolecular porous microsphere chromatographic columns are adopted, the ammonia and hydrogen sulfide content in the mixed gas can be further analyzed and completed by a gas chromatograph, the analysis is fast, the results are accurate and reliable, the operation is simple, convenient and safe, and the detecting method can be used for detecting the ammonia and hydrogen sulfide content in ammonia-containing acidic raw gas of a sulfur recovery device in an oil refinery plant and can be used for analyzing relative gas systems of coking plants, nitrogen fertilizer plants and the like.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and relates to gas analysis technology, in particular to an analysis method for ammonia and hydrogen sulfide content in acidic gas containing water vapor in Claus sulfur recovery process in refinery, and can be used in coal coking plants and Analysis of mixed gas containing ammonia and hydrogen sulfide in ammonia plant and analysis of related gas systems. Background technique [0002] When Claus sulfur recovery process technology treats ammonia-containing acid gas, all the acid raw material gas is introduced into the sulfur production furnace for combustion, and the ammonia in the acid gas must be completely burned and decomposed into N in the sulfur production furnace. 2 and H 2 O, if the ammonia combustion is not complete, the residual ammonia will cause the following problems: (1) Ammonia will react with various acidic components in the process gas stream to form solid ammoni...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 朱康玲涂怡然杨龙刘百强刘家海张海波
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com