Inventors:
David B. Shield - Wadsworth TX, US
Assignee:
Equistar Chemicals, LP - Houston TX
International Classification:
B01F 3/04
US Classification:
261 26, 165900, 261 361, 261110, 261151, 261DIG 11
Abstract:
In a gravity fed cooling tower liquid return system having a common header with a plurality of valved sub-headers, a distributive control system, risers on the sub-headers, and sensor/transmitters on the risers, some of the sensor/transmitters controlling the valves on their respective sub-headers, sensing the liquid level in each of the sub-headers, comparing the sensed liquid levels in the distributive control system, and controlling the liquid levels in the sub-headers in response to the sensed liquid levels.