Dust hood for coke oven

Abstract

The invention discloses a dust hood for a coke oven. The dust hood comprises horizontally distributed steel trusses (3), which are fixed on a coal tower (2) through stay cables (1). Two ends of the steel trusses are supported through columns (5). A fire insulation and dust storage layer (4) is arranged below the steel trusses (3). By the above technical scheme, the main-body structure of the steeltrusses will not be exposed to a fire scene caused by coke discharging, safety risk during the application period is reduced, and service life is prolonged. The original full-coverage roof truss is changed into the two-row steel trusses, and the refuge floor material is lightweight fire insulation boards fitted with lightweight keel. Thus, deadweight is greatly reduced. Construction can be completed through prefabricated assembly and hoisting. Thus, building cost and construction difficulty are greatly reduced. With the arrangement of local folding boards and by optimization of an air-duct system, functions of heat dissipation, dedusting, fire protection and the like are integrated into the dust hood. The dust hood has good environmental-protection value.

Description

technical field [0001] The invention belongs to the technical field of coke oven production equipment in metallurgical industrial production. More specifically, the present invention relates to a coke oven dust hood. Background technique [0002] At present, the design of domestic coke oven dust removal hood basically refers to the steel truss roof design method commonly used in large-span steel structure workshops, such as Figure 4 and Figure 5 The dust hood structure shown in the prior art is taken as an example, which adopts a full-coverage steel truss roof mode design, and uses two rows of stay cables and two rows of columns to provide vertical support. Its existing problems are: [0003] First of all, the existing technology does not consider the high temperature in the coke oven production process and the adverse effects caused by the fire when the coke oven is discharged; The safety of the main structure of the steel truss; the fire resistance of the steel struct...

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Problems solved by technology

[0003] First of all, the existing technology does not consider the high temperature in the coke oven production process and the adverse effects caused by the fire when the coke oven is discharged; The safety of the main structure of the steel truss; the fire resistance of the steel structure itself is poor, and when the temperature reaches above 500°C, it will quickly enter the yield state, resulting in partial or overall deformation of the structure and failure, which will lead to major safety accidents; at the same time, the steel truss During the use and maintenance of the roof after completion, the maintenance of the main structure must be carried out under the condition of fire isolation; therefore, the fire isolation design of the dust cover is required;

[0004] Secondly, in the construction process of the steel truss dust collector, considering the heavy weight of the main structure of this type of design, and the coke oven must be discharged intermittently, the construction difficulty is greatly increased; if measures to stop the coke discharge are taken, it will cause certain economic loss

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