CN219297430U - Coke oven coal charging hole cover - Google Patents

Abstract

The utility model discloses a coal charging hole cover of a coke oven, which comprises a cover body and a base, wherein a hollow structure is arranged in the top surface of the base, perlite particles are filled in the hollow structure, the cover body is arranged on the top surface of the base through bolt connection, and the center of the bottom of the hollow structure protrudes upwards to form a solid spherical crown surface. The surface temperature of the novel coal charging hole cover is reduced by 60 ℃ compared with that of the original coal charging hole cover on average; the service cycle of the novel coal charging hole cover reaches more than 12 months, the service life is prolonged, and the phenomena of burning loss deformation of the furnace cover and smoking and flame smoking of the furnace cover are obviously improved.

Description

Coke oven coal charging hole cover

Technical Field

The utility model relates to a coal charging hole cover of a coke oven.

Background

In the coking industry, coke ovens are industrial ovens that consume high amounts of energy. The clean production requires that the ton coke energy consumption is below 122-155kgce, wherein the energy consumption of the coke oven accounts for 70-80% of the working procedure energy consumption, and more than 10% of the total energy consumption of the coke oven is dissipated into the atmosphere through the surface of the oven body, so that the energy sources are wasted and the environment is polluted. Among all heat dissipation surfaces of the coke oven, particularly the temperature of the coal charging hole cover and the base is highest, the heat dissipation intensity is greatest, and the operation environment of the oven top is seriously deteriorated. Therefore, the heat dissipation of the furnace body is reduced, the environmental heat pollution is relieved, the energy-saving and consumption-reducing furnace cover is developed, the surface temperature of the furnace cover is reduced, the heat loss is reduced, the significance for improving the operation environment of the furnace top is great, the significance for reducing the coking energy consumption cost is great, the significance for reducing the unorganized harmful smoke and dust emission of the furnace top is great, the loss of the furnace cover body is reduced when the surface temperature of the furnace cover is reduced, and the purchasing and maintenance cost of spare parts is effectively reduced.

The related literature data of the coke oven are more, the innovation technology and the patent are mainly embodied in the directions of overhaul of coke oven equipment, jiao Lugong technology, automatic control and the like, the related literature of Jiao Lugong technology spare part improvement is not more, and the related patent technology in the aspects of new material of a coal charging hole cover, casting technology and the like is provided, but the manufacturing cost of the existing related improvement technology is higher, and the utilization rate of enterprises is not high.

A coke oven is installed on top of an existing 4 seats and 55 holes and 6 meters in a factory. Each carbonization chamber of the coke oven top is designed with 4 coal charging holes, and the coal charging hole cover is special furnace body equipment for sealing the coal charging holes after the coke oven is charged with coal. The 4-seat coke ovens share 880 coal charging hole covers. The original design coal charging hole cover is a casting piece, the material RUT340, the upper part is a plane, the bottom is a cavity, and the R280mm spherical surface of the outer ring of the bottom is used as a sealing surface of the coal charging hole. Before use, the bottom cavity is poured with refractory mortar to achieve the effects of heat preservation and heat insulation. The coal-charging hole cover is used at the high temperature of 1000 ℃, and the heat-insulating effect of the coal-charging hole cover is poor after the fire clay gradually falls off. The automatic cover uncovering machine of the coal charging car frequently opens and closes the coal charging hole cover, so that the fire clay falls off, the furnace cover deforms under high-temperature baking after losing the protection of the fire clay, and the furnace cover is partially burnt out to be finally broken and damaged. The effects are as follows: 1. after heat preservation is invalid, the coal charging hole cover loses the heat insulation effect, so that the heat radiation of the carbonization chamber to the furnace top area is increased, the operation environment is deteriorated, and meanwhile, the unorganized harmful smoke dust is increased due to the empty burning deformation of the coal charging hole cover; 2. the coal charging hole cover has poor heat preservation effect, so that heat loss in the carbonization chamber is caused, the coking heat consumption is increased, and the coking production cost is increased; 3. the service life of the coal charging hole cover is short, so that the cost of spare parts of the coke oven is increased, and the replacement cost is 52 ten thousand yuan per year.

Disclosure of Invention

The utility model aims to provide a coke oven coal charging hole cover, which has a good effect on improving the environmental temperature of the oven top of a coke oven, can effectively reduce the coking energy consumption and the purchase cost of spare parts, simultaneously has a good improvement on smoke generation of the coal charging hole, reduces burning loss of coke on the oven top, reduces the emission of unorganized harmful smoke dust at the coal charging hole, and improves the post occupational health, environmental protection unorganized emission and coking cost.

The technical scheme includes that the coke oven coal charging hole cover comprises a cover body and a base, wherein a hollow structure is arranged in the top surface of the base, perlite particles are filled in the hollow structure, the cover body is connected to the top surface of the base through bolts, and the center of the bottom of the hollow structure protrudes upwards to form a solid spherical crown surface.

The utility model improves the structure of a coal-charging hole cover, which consists of a lower body and an upper cover plate of the coal-charging hole cover, light high-temperature resistant materials and the like. The coal charging hole cover base is still integrally cast by RUT340 material, the structure is improved from a bottom cavity to an upper cavity structure, an upper base cover plate is processed and manufactured by using a 10mm thick steel plate, and the material is Q235B; the upper part and the lower part are connected and fastened between the base of the coal charging hole cover and the upper cover plate through four M16 bolts. Perlite particles are filled in the cavity at the upper part of the base of the coal charging hole cover, and the heat insulation and heat preservation effects of the coal charging hole cover are achieved by utilizing the characteristics of being ultra-light, heat-insulating and good in heat preservation performance.

The surface temperature of the novel coal charging hole cover is reduced by 60 ℃ compared with that of the original coal charging hole cover on average; the service cycle of the novel coal charging hole cover is more than 12 months, the service life is prolonged, the phenomena of burning loss deformation of the furnace cover and smoking and flaming of the furnace cover are obviously improved, the utilization rate of coal gas is improved, and the pollution to the atmosphere environment is reduced; the novel coal charging hole cover has good heat insulation and preservation effects, reduces heat radiation and heat loss of the carbonization chamber, improves the working environment of operators, and has an energy-saving effect; the manufacturing and processing cost of the novel coal charging hole cover and the original coal charging hole cover is not obviously increased, and the service life is prolonged by more than 6 times. The device is used on site, the inner cavity of the novel coal charging hole cover is filled with perlite particle heat insulation materials for protection, the whole device is not easy to burn out by the high temperature of the carbonization chamber, the heat insulation materials cannot fall off, and the service life is prolonged to more than one year. The novel coal charging hole cover and the coal charging hole seat are well sealed, thereby effectively preventing raw gas from leaking and reducing environmental pollution. The Q235B material is used for the upper cover plate of the coal charging hole, so that the integral strength of the coal charging hole cover is enhanced, and the damage, breaking and fracture of the coal charging hole cover caused by frequent operation of the electromagnetic uncovering machine of the coal car are avoided. Compared with the original hole cover, the novel coal-charging hole cover has the advantages that the manufacturing cost is not increased, but the service life is greatly prolonged, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic view of a front view in cross section.

Description of the embodiments

The utility model provides a coke oven coal charging hole lid, is shown as the figure 1, includes lid 1 and base 3, has hollow structure 2 in the base 3 top surface, and hollow structure 2 intussuseption is filled with and is being set up the pearlite granule, is setting up lid 1 through bolted connection on the base 3 top surface, the bottom center of hollow structure 2 is protruding upwards to constitute solid spherical cap surface.

Claims (1)

1. A coke oven coal charging hole cover comprises a cover body and a base, and is characterized in that: the top surface of the base is internally provided with a hollow structure, perlite particles are filled in the hollow structure, the top surface of the base is provided with a cover body through bolt connection, and the center of the bottom of the hollow structure protrudes upwards to form a solid spherical crown surface.

Images