We can help you in several critical areas including: N/C meter, Radar equipment, and Safurex® high-pressure equipment.

N/C meter: The molar ratio between ammonia and carbon dioxide in the urea synthesis reactor, commonly referred to as N/C ratio, is the main process parameter to achieve the optimal yield of urea. If the N/C ratio is correct, the plant produces at stable conditions with the maximum temperature at prevailing synthesis pressure maximizing urea yield. The result is less steam consumption, minimum ammonia losses, no laboratory assistance required and maximum urea production.

Stamicarbon has a continuous N/C measurement system that can be used in its own design urea plants, as well as in many other urea plants. This is based on measuring density of the urea synthesis reactor effluent, which demonstrates a relationship with the N/C ratio. Hence, by continuously sampling the effluent and translating the density measurement into the N/C ratio, this provides a continuous flow of information on one of the urea plant’s key operating parameters.

To realize an accurate measurement, the sample needs to be conditioned at a reduced temperature and pressure. The sample taken from the urea synthesis reactor first passes a sample conditioning system (cooling, pressure reducing and flushing). The sample is then analyzed in the density meter, before being released into the recirculation section.

Ultimately, for than two decades, the N/C meter has proved very reliable, saving money, time and hassle.

The N/C measurement system, installed in a cabinet, is built by SPIE, a partnering company of Stamicarbon. The cabinet has all the connections required for easy installation in a urea plant. The N/C measurement system can be installed in all Stamicarbon urea plants and many non-Stamicarbon urea plants.