RU2007435C1 - Device for compression and charging of coal burden into vertical multichamber coke oven of continuous action - Google Patents

Abstract

FIELD: by-product coke industry. SUBSTANCE: device includes mobile car 13 on which at distance equal to two distances between axes of adjacent thermal treatment chambers there are mounted two hoppers 1 and weighing fixtures with chutes 3 placed above each of them and telescopic elements 4, two pressing pushers 8 with separable elements 9, cross-pieces 10, two hydraulic cylinders 11, hydraulic power plant 12 with electric motor drive 14. Above charging section 15 of each thermal treatment chamber there is steadily installed burden vessel 5 which height is equal to 0.7-0.8 of height of separable element 9 of pressing pusher 8. EFFECT: improved working characteristics. 2 dwg, 1 tbl

Description

 The invention relates to a device for loading and densifying a coal charge in vertical coke ovens of continuous layer coking and can be used in the coke industry.

 A device is known for loading and sealing a two-chamber vertical coke oven of continuous operation, including a hopper for a coal charge common to two adjacent heat treatment chambers, and an inclined chute located above each of the chambers, a receiver, a crosshead with a press pusher and two hydraulic cylinders for communicating the press reciprocating pusher. Traverses with press pushers and hydraulic cylinders mounted above adjacent heat treatment chambers and fed by one loading hopper are located respectively to the left and right of this hopper.

 The presence in the described device above each two chambers of heat treatment of the loading hopper and the above equipment above each of the chambers leads to high metal consumption of the unit and a significant heap of equipment on top of the heat treatment chambers, which worsens the service conditions of this equipment due to poor access to it, and significantly lengthens the time by carrying out repairs and other preventive measures.

 The closest in design features to the claimed one is a device for loading coal into a coke oven, including a mobile trolley, two hoppers for the initial coal charge located on it, equipped with inclined chutes in the lower part, two press pushers with devices for their reciprocating movement, charge receivers. The initial coal charge is compacted in the receiver using a press pusher and fed into the heat treatment chamber, maintaining the specified filling density in it by adjusting the amount of the initial and pressed mixture.

This device has the following disadvantages when used for loading vertical multi-chamber continuous furnaces:
increased metal consumption of the mobile trolley, due to the fact that all the equipment necessary for compaction and loading of the coal charge into the heat treatment chambers is placed directly on the trolley;
difficulty in servicing and repairing equipment on a mobile trolley, since sets of equipment for loading are installed above two adjacent heat treatment chambers, and all the equipment is placed on this trolley.

 The aim of the invention is to reduce metal consumption and simplify maintenance of equipment on top of the furnace.

 This goal is achieved by the fact that in the device, including a mobile trolley, on which two hoppers, charge receivers, two press pushers with devices for their vertical reciprocating movement are fixed, the hoppers are equipped with means for dispensing portions of the coal charge and are mounted on the trolley at a distance equal to two distances between the axes of adjacent heat treatment chambers, estruses are equipped with a telescopic element for their reciprocating movement, each press pusher in the lower part has a the main element, and the charge receivers are stationary on the top of each heat treatment chamber and are equipped with windows for introducing estrus and a removable pusher element on top, and the height of the charge receiver is 0.7-0.8 of the height of the removable pusher element.

 The proposed device is shown in FIG. 1 and 2.

 In FIG. 1 shows a vertical cross-section through a loading device; in FIG. 2 is a vertical longitudinal section through the elements of the device.

 A device for compacting and loading a coal charge into a continuous vertical multi-chamber coke oven includes a mobile trolley 13, on which two hoppers 1 and metering devices 2 and estrus 3 with telescopic elements 4 are located under each of them. Press tappets are also installed on the trolley 13 8, mounted on traverses 10 together with hydraulic cylinders 11, a hydrostation 12 and an electric drive 14.

 Above the loading section 15 of each of the heat treatment chambers, a charge receiver 5 with a removable element 9 of the press pusher 8 located therein is fixedly mounted.

 The hoppers 1 with estrus 3 and the press pushers 8 are mounted on the trolley at a distance equal to two distances between the axes of adjacent heat treatment chambers.

 In FIG. 1 shows the moment when one set of equipment, consisting of a hopper 1 with a metering device 2, estrus 3 with a telescopic element 4, a press pusher 8 with a traverse 10 and a hydraulic cylinder 11, is located above one of the odd heat treatment chambers, and the second set is above the neighboring an odd camera. In the gap between these chambers, there is a receiver for the charge 5 of the even chamber with the removable member of the press pusher 8 lowered into it. Here, in FIG. 1, a telescopic connection of estrus 3 with the window 6 of the charge receiver 5 is shown, in which the immersed portion of the estrus 3 is properly raised to the upper part of the receiver before moving the cart 13 to the next heat treatment chambers.

 Above the traverses 10, thrust devices 16 are installed at their ends to provide the necessary counterpressure during periods of compaction of the charge portions and pushing them into the heat treatment chambers. The mobile trolley 1 is driven by an electric drive device 14 located at one of the ends of the trolley 13. The movement of the trolley 13 is controlled automatically. The mobile trolley 1 is equipped with a lifting device for repairing equipment located above the heat treatment chambers (not shown in the figure), as well as for replacing the metal structures of the loading sections 15 and the metal heating walls of the heat treatment chambers along the height of the upper horizontal heating channels.

 The device operates as follows.

 The coal charge from the bunkers 1, located, for example, above the odd heat treatment chambers, is supplied with dosing devices 2. After cutting off the given portions of the charge, the latter, through estrus 3 with telescopic elements 4, enter the receiving tanks 5 and from them into the loading sections 15 above these chambers. After the batches of the charge arrive in the loading sections 15, the press pushers 8 with the removable elements 9 are lowered through the window to the bottom of the receiving tank 5 (indicated by dashed lines in Fig. 1), the charge is compacted to a predetermined density, while also promoting the entire charge-coke cake in the heat treatment chamber per loading step.

 Before loading, the corresponding volumes of coke are unloaded from the indicated odd chambers.

 At the end of loading the next portions of the compacted charge into the odd chambers, the removable elements 9 of the press pushers 8 are left immersed in the receiving containers 5 above these chambers. Then the telescopic elements 4 are lifted from the windows of the receiving containers 5 and the trolley 13 is moved to adjacent two even heat treatment chambers, the press pushers 8 are coupled to the removable elements 9 previously immersed in the receiving containers 5 above these cameras, and the press pushers 8 are lifted together with removable elements 9 to the level shown in FIG. 1, when they are located above the odd cameras, and perform all the above similar operations in the same sequence as when working on the odd cameras.

 Immersion of the removable elements 9 of the pushers in the receiving tank 5 is carried out in order to disconnect the heat treatment chambers from the environment to prevent the release of gases from the chambers.

 All technological operations for loading and compacting the coal charge and feeding it to the heat treatment chambers are performed according to a predetermined schedule in automatic mode.

 The height of the receiver of the charge 5 is equal to 0.7-0.8 of the height H of the removable element 9 of the press pusher.

 An increase in the height h of the charge receiver more than 0.8 height H of the removable member of the press pusher leads to an increase in metal consumption and worsens the conditions for lifting the removable element from the charge receiver, and a decrease in height h of the charge receiver is less than 0.7 of the height H of the removable member of the press follower in the receiver, the required number of portions of the charge, i.e., reduces, along with the metal consumption, the productivity of the furnace.

 The table shows the comparative performance of the known prototype and the proposed device in relation to the installation of continuous coking with ten heat treatment chambers.

 As can be seen from the table, the proposed device can reduce the metal consumption of the mobile trolley by 28% due to the fact that the removable elements of the press pusher and coal charge receivers are installed directly above the heat treatment chambers. Reducing the metal consumption of the trolley reduces the energy consumption for its movement, i.e., leads to a decrease in operating costs.

 By doubling the distance between the axes of the press pushers and hoppers, the service conditions for equipment installed both on the trolley and above the heat treatment chambers are significantly improved, since access to it is greatly facilitated. This is also facilitated by equipping the mobile trolley with a lifting device, the presence of which facilitates preventive repairs of equipment and masonry furnaces associated with the installation and dismantling of equipment. (56) Processing of the technological mode of continuous layer-by-layer coking of blends of various compositions at the Khokhz plant with an industrial chamber width and development of a pilot module design with a capacity of 10 thousand tons of coke per year. Explanatory Note, Kharkov, UKHIN, 1989, NIR-1024SI, p. 14, 22-24.

 Japanese Application N 63-14031, cl. C 10 V 37/00, 1988.

Claims (1)

 A DEVICE FOR SEALING AND LOADING A COAL CHARGE INTO A VERTICAL MULTI-CHAMBER COATING FURNACE CONTINUOUS including a mobile trolley on which two bunkers are fixed, charge receivers, two pushers with differently moving devices portions of the coal charge and mounted on the trolley at a distance equal to two distances between the axes of adjacent heat treatment chambers, estruses are equipped with a telescopic element for and x reciprocating movement, each press pusher in the lower part has a removable element, and the charge receivers are stationary on top of each heat treatment chamber and are equipped with windows for introducing estrus and a removable press pusher element from above, the charge receiver height being 0.7 - 0.8 height of the removable element of the press follower.

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