Distillation: processes – thermolytic – With measuring – testing or inspecting
Patent
1985-06-12
1986-09-30
Yasich, Daniel M.
Distillation: processes, thermolytic
With measuring, testing or inspecting
201 39, 202227, 202230, 202262, 374124, 374142, C10B 3906, G01J 500
Patent
active
046145672
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a method for the detection of red heat pockets and for quenching the coke lying on the coke bench, and to devices for carrying out this method.
The red hot coke ejected from the coke oven chamber is normally pushed into a quenching carriage and is quenched or prequenched under a quenching tower by spraying with water. Thereafter the quenching carriage travels to a coke bench on which it stays for a while for final cooling and steaming of the so-quenched or prequenched coke out before it is transported to the coke screening plant by means of a bench draw-off belt or conveyor belt. Normally the coke should be completely quenched or prequenched when being charged on to the coke bench. On the other hand, during quenching or prequenching under the quenching tower and during after-quenching or requenching on the coke bench the coke should not be treated unnecessarily with too much water, whereby to avoid too high a water content of the coke. Rather, the water content of the coke should be kept uniform and low to the extent possible. As a result, unfortunately, it often happens that certain coke portions of the so-quenched or prequenched coke on the coke bench are still red hot. To prevent this red hot coke from getting onto the following rubber draw-off belt or conveyor belt and especially into the coke screening plant, it is absolutely necessary to after-quench or requench the so-called red heat pockets or red hot pockets or local areas of red hot coke which may occur on the coke bench. To watch the red heat pockets or red hot pockets occurring on the coke bench, heretofore there had to be an operator to after-quench or requench the red hot pockets by hand with a water hose. This usually led to gross or mass after-quenching or requenching over a large area with consumption of much water and to an excessive water content of large portions of coke.
It is indeed known to arrange above the ramp draw-off belt or conveyor belt, for control, individual temperature sensors which detect any still existing red hot coke on the conveyor belt and, if necessary, set in motion an after-connected water shower. This, however, is only a continuous observation of a single, relatively small point and is not suitable for observation of the large total surface of the coke bench.
SUMMARY OF THE INVENTION
It is now the object of the invention to automatically monitor the coke on the coke bench and to completely quench, i.e. after-quench or requench any red heat pockets using a minimum of water.
With the method according to the invention, the problem is solved in that the entire area of the coke bench is covered, monitored and recorded by temperature sensors installed thereabove and temperature recording means usable therewith, and if necessary, upon detection of overly hot coke portions in relation to a desired temperature value or standard, only these so-detected locally occurring individual relatively small areas or red hot pockets are treated automatically under the control of control means with a focused water jet for as short a time as possible to after-quench or requench only these portions selectively. It has been found, surprisingly, that also such a larger area of the coke bench can be monitored with the temperature sensors in a simple manner and that especially e.g. by means of a processor it is possible, upon the detection of overly hot coke portions, to immediately spray with water only those overly hot portions in dependence upon the sensed and recored temperature. In accordance with the more modern automatic bench draw-off systems it is possible with this new invention to completely dispense with a special operator at the coke bench.
According to the invention, in particular after detection of the hot coke portions, one can let the after-quenching or requenching operation start only after a given period of, i.e. delay time time. It has been found that certain hot coke portions cool off already after a very short time anyway, so that quenching, i.e. after-
REFERENCES:
patent: 3535630 (1970-10-01), McMullen
patent: 3580813 (1971-05-01), Hinchliffe
patent: 4066159 (1978-01-01), Romovacek
patent: 4111757 (1978-09-01), Ciarimboli
patent: 4246072 (1981-01-01), Brommel
patent: 4358343 (1982-11-01), Goedde et al.
patent: 4409067 (1983-10-01), Smith
patent: 4439049 (1984-03-01), Hoogendoorn et al.
patent: 4452538 (1984-06-01), Roger et al.
patent: 4539588 (1985-09-01), Ariessohn
Haack Reimer
Lukaszewicz Helmut
Stahlherm Dieter
Stewen Wilhelm
Firma Carl Still GmbH & Co. KG
Yasich Daniel M.
LandOfFree
Method and apparatus for selective after-quenching of coke on a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for selective after-quenching of coke on a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for selective after-quenching of coke on a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-983228