Distillation: processes – thermolytic – Carbonizing under pneumatic pressure or vacuum
Patent
1995-03-02
1997-03-11
Warden, Robert J.
Distillation: processes, thermolytic
Carbonizing under pneumatic pressure or vacuum
137 14, 1374875, 202105, 202256, 202270, C10B 4700
Patent
active
056097310
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention concerns a process for regulation of gas pressure of a coke oven retort.
2. Description of the Prior Art
DE-PS 955 681 discloses regulating gas pressure in the elbows of ascending pipes of coke oven batteries by means of throttling members which are coupled to a cam disk as a controlling element. In this, the geometry of the cam disk corresponds to the pressure ratios customarily to be expected. Through the rotational movement of the throttling member of the ascending pipe elbow, which takes place in small steps, the cross section of the ascending pipe is regulated from the beginning of the filling of the oven retort until the end of the coking time, corresponding to the pressure course during gas formation of the coal which is to be coked in order to constantly maintain a slight constant overpressure in the retort.
DE-AS 1 192 152 discloses a process for regulation of the gas pressure of a coke oven retort in which the cup shaped pivotable valves are activated as throttling members corresponding to the pressure increase during gas formation of the coal to be coked.
In this, regulation takes place via a control disk which completes one rotation for each gas formation period and is connected to the valve by a lever arm. In the horizontal position, the valve fills with water such that the effectively sealing fluid density known from coal carbonizing practice is maintained.
With these known regulating techniques, it is an advantage that all coke ovens of a battery solely can be controlled according to the default geometry of the cam disk as the control element. Regulation of the actually individual retort pressure dependent upon the gas release of the individual oven is not possible.
SUMMARY OF THE INVENTION
The task underlying the invention is to develop a process in order to individually regulate the gas pressure of each single coke oven retort dependent on the gas release and/or to influence the crude gas composition. Further, the task underlying the invention is to present a device for the implementation of the process.
This task is solved with reference to the process in accordance with the present invention in that the throttling for each individual oven takes place with a controllable water submersion and the regulation takes place in dependence upon the actual pressure ratio in the coke oven retort.
Further developments according to the process are characterized thereby in that the regulation of gas pressure takes place in the area of the maximal level of water submersion and thus the lingering period of the crude gas in the coke oven retort is increased. The process of the present invention is further characterized in that the regulation of gas pressure takes place in the area of the minimal level of water submersion and thus the lingering period of the crude gas in the coke oven retort is decreased. Regulatable water submersion is implemented in coke ovens with double collecting main operation. Pressure in the coke oven retort is regulated such that the pressure remains constant at the level of the retort minimal pressure which is known per se.
Solutions to the task of invention with reference to the device are characterized thereby in that the throttling member consists of a pivotable cup (1) which exhibits a gap (3). A floor (8) of pivotable cup (1) is formed as a cone and exhibits a run-off gap (7), which is interrupted by teeth (9). A plate (10) with an axis (11) and with an adjustable stop (12) is pivotably arranged beneath a submersion pipe (13). A pivotable cup (6) is designed with a funnel floor (61) with outflow apertures (62) and (63). A pivotable cup (70) with an outflow aperture (71) is equipped such that a purification mandrel (72) can be introduced with a downward swing. The edge of submersion pipe (13) is executed diagonally or is equipped with reliefs or openings. An ascending pipe elbow is furnished with an ascending pipe elbow extension (90) with out-flow aperture (91). Beneath an ascending pipe elbow extension
REFERENCES:
patent: 2603232 (1952-07-01), Keammerer
patent: 3243360 (1966-03-01), Wethly
patent: 3580815 (1971-05-01), Tucker
patent: 3876507 (1975-04-01), Koddenberg et al.
Eisenhut Werner
Giertz Hans J.
Hammermann Hans J.
Huhn Friedrich
Bergwerksverband GmbH
Carpenter John Wade
Thornton Krisanne M.
Warden Robert J.
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