Ammonia Calculation in Gas Samples via Hydrogen Analyzer

The patent uses a hydrogen analyzer as an intermediary device to indirectly measure ammonia concentration. Instead of using a dedicated expensive ammonia analyzer, the system employs a hydrogen analyzer with a catalyst that converts ammonia to hydrogen, allowing the hydrogen analyzer to detect ammonia levels through the generated hydrogen signal. This intermediary approach resolves the contradiction by achieving ammonia measurement precision through a different measurement pathway that avoids the need for complex and expensive dedicated ammonia analysis equipment.

The patent replaces the mechanical/chemical measurement system of dedicated ammonia analyzers with a catalytic conversion system followed by hydrogen detection. The catalyst chamber converts ammonia chemically to hydrogen, and the hydrogen analyzer detects the resulting hydrogen concentration. This substitution uses a different physical principle (hydrogen detection via thermal conductivity or other methods) to achieve ammonia measurement, thereby reducing device complexity and cost while maintaining measurement precision.

The patent extracts ammonia from the gas sample stream by passing it through a catalyst chamber where ammonia is selectively converted to hydrogen. This separation step removes the interfering ammonia from the original mixture, allowing the hydrogen analyzer to then measure hydrogen concentration without interference. The extraction principle resolves the contradiction by physically separating the interfering substance before measurement, thereby maintaining measurement precision while using a simpler hydrogen analyzer device.

The patent performs preliminary catalytic conversion of ammonia to hydrogen before the hydrogen analysis step. By pre-converting ammonia in the catalyst chamber, the system eliminates the interference problem before the actual hydrogen measurement occurs. This preliminary action ensures that when the hydrogen analyzer measures the gas sample, the ammonia has already been transformed, thus maintaining measurement precision without requiring a complex ammonia-specific analyzer.

The patent replaces the manual water burette measurement system with an automated catalytic conversion and hydrogen detection system. The catalyst chamber continuously converts ammonia to hydrogen, and the hydrogen analyzer automatically detects and quantifies the ammonia concentration in real-time. This substitution eliminates the need for frequent manual readings, thereby maintaining measurement precision while dramatically improving productivity and process monitoring efficiency through continuous automated measurement.

The patent implements continuous monitoring by maintaining a continuous flow of gas through the catalyst chamber and hydrogen analyzer. Unlike discrete manual water burette readings, the automated system provides continuous real-time data on ammonia concentration throughout the heat treatment process. This continuous useful action resolves the contradiction by enabling both high measurement precision and high productivity, as the system continuously monitors without requiring manual intervention or slowing down the production process.