EP 0132974 B1 19890301 - SAFETY SYSTEMS FOR COAL PULVERIZERS
Title (en)
SAFETY SYSTEMS FOR COAL PULVERIZERS
Publication
Application
Priority
US 51935283 A 19830801
Abstract (en)
[origin: EP0132974A2] A safety control system for a coal pulverizer utilizes signals (20,22) representing net oxygen and carbon monoxide measurements of the pulverizer atmosphere. A signal (50) representing the rate of carbon monoxide change is derived form the signal (22) by a derivative controller (48). The signals (20,50) representing the net oxygen measurement and rate of carbon monoxide change are compared in respective comparing means (36,52) with respective setpoints (38,54) to generate control signals (46,62) for actuating alarms (26,28). The pulverized oxygen and actual carbon monoxide signals (20,22) are compared in respective comparing means (64,88) with respective setpoints (66,90) to generate control signals (74,98) for causing automatic inerting of the pulverizer by supplying carbon dioxide thereto.
IPC 1-7
IPC 8 full level
B02C 23/04 (2006.01); B02C 25/00 (2006.01); F23K 1/00 (2006.01); G05B 23/02 (2006.01)
CPC (source: EP KR)
B02C 23/04 (2013.01 - EP); B02C 25/00 (2013.01 - KR); F23K 1/00 (2013.01 - EP); F23K 2201/10 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0132974 A2 19850213; EP 0132974 A3 19851121; EP 0132974 B1 19890301; EP 0132974 B2 19920902; AU 3131384 A 19850207; BR 8403542 A 19850625; CA 1229327 A 19871117; DE 3476851 D1 19890406; ES 534210 A0 19850516; ES 8504487 A1 19850516; HK 96689 A 19891215; IN 162793 B 19880709; JP H0128613 B2 19890605; JP S60143844 A 19850730; KR 850001561 A 19850330; KR 900002655 B1 19900421; MX 160409 A 19900219; SG 63889 G 19900126
DOCDB simple family (application)
EP 84304640 A 19840706; AU 3131384 A 19840730; BR 8403542 A 19840712; CA 457368 A 19840625; DE 3476851 T 19840706; ES 534210 A 19840711; HK 96689 A 19891207; IN 448CA1984 A 19840627; JP 16031484 A 19840801; KR 840004571 A 19840517; MX 20201784 A 19840713; SG 63889 A 19890915