Allan variance analyze of the three-axis integrative FOG;

Design principle and structure characteristic were discussed for reformation of internals of ammonia converter with one axial and three radial beds, the filling of catalyst and its heating and reducing processes were introduced, summarization was also made for running situation of production and economic benefit after reformation.

With simple measuring auxiliary tools, the center of hole axle is located with standard diameter steel ball so as to solve the problem of precise measuring the center distance of one body hole axle.