Method for determining the end of devolatilizing in a coke oven and adjusting the coke cycle based thereon

Patent · Tue Feb 04 04:00:00 EST 1986

OSTI ID:5975168

Bauer, E G

This patent describes a process for manufacturing coke in a by-product coke oven battery. Each oven is operated over a coking cycle; each coking cycle having an aim total coke cycle time defined by a charging time and an aim push time. The aim push time has a permitted plus or minus deviation. Between the charging time and aim push time there is: (1) a devolatilizing period of estimated length, and (2) a coke soaking period immediately following the devolatilizing period. The method of determining the end of the devolatilizing period consists of: (a) in a first coking cycle, during a devolatilizing period, obtaining liquid catch condensed volatiles specimens from gas samples withdrawn from within the coke oven; (1) determining a reference light-transmitting value of the catch specimens for the devolatilizing period; (b) in a second coking cycle, as the coking cycle approaches an estimated end of the devolatilizing period, obtaining liquid catch specimens having condensed volatiles from gas samples withdrawn from within the coke oven; and (1) determining when an individual light-transmitting value of one of the specimens varies by a pre-selected amount from the reference light-transmitting value.

• Assignee: Bethlehem Steel Corp., Bethlehem, PA
• Patent Number(s): US 4568424
• OSTI ID: 5975168
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
BY-PRODUCTS
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COKE
COKE OVENS
COKING
DECOMPOSITION
DEVOLATILIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
MATTER
MEASURING METHODS
OPERATION
TIME DEPENDENCE
VOLATILE MATTER