DIGITAL MULTIVARIABLE SYSTEM FOR CONTROLLING AMMONIA SYNTHESIS PROCESS Russian patent published in 2007 - IPC G05B13/02 

FIELD: chemical engineering.

SUBSTANCE: device has gauge for measuring hydrogen and nitrogen concentration in circulating gas, gauges and regulators of temperature in catalyst layers, valves in bypass streams lines. Gauges for measuring ammonia and inert gases concentration in circulating gas, autonomous cross-links compensation units connected with their inputs to catalyst layers temperature regulators outputs, and with the outputs to valves in bypass streams lines via adder units, the invariant disturbance compensators connected with their inputs to circulating gas ammonia, inert gases, hydrogen and nitrogen concentration gauges, and with their outputs to valves in bypass streams lines via adder units, are additionally introduced into design.

EFFECT: improved digital temperature control quality.

2 dwg