Damper baffle for a coke oven ventilation system

Abstract

The damper baffle includes a U-shaped sub-frame and a temperature resistant insulation damper mat draped over and secured upright to the sub-frame for use in the ventilation system of a coke oven. The damper mat is a thick sheet of silica needle mat, which provides the thermal barrier of the damper baffle. The sub-frame is a bent high temperature steel rod which is bolted directly to the base plate of a conventional lift frame and lift mechanism. Two pairs of support plates secure and support the mat over the sub-frame in an upright orientation. The damper baffle seeks to provide a light-weight damper baffle for use in coke ovens, which eliminates the need for the heavy and cumbersome refractory baffle blocks.

Description

[0001]This invention relates to coke ovens, and in particular damper baffles used in the ventilation system of coke ovens.BACKGROUND AND SUMMARY OF THE INVENTION[0002]Damper block baffles inside the ventilation systems of coke ovens regulate air flow through the ovens to control oven temperatures. Heretofore, damper block baffles consisted of a plurality of refractory damper blocks stacked atop a lift frame that is raised and lowered within the ventilation duct to open and close the air passage. The refractory damper blocks used in the damper block baffles are large heavy pre-cast shapes designed to withstand the high temperatures and act as a thermal barrier. Because of the weight and size of the damper blocks, the baffles require large hydraulic pistons to raise and lower the damper block baffles within the ventilation ducts.[0003]Because the extreme heat from the coke ovens, refractory damper blocks deteriorate over time and must be routinely replaced. Replacing the bulky and hea...

AI Technical Summary

Benefits of technology

The present invention provides a light-weight damper baffle for coke ovens that eliminates the need for heavy and cumbersome refractory damper blocks. The damper baffle includes a U-shaped sub-frame and a temperature-resistant insulation damper mat draped over and secured upright to the sub-frame. The weight of the present damper baffle is significantly less than conventional damper baffles, making it easier to replace and safer to handle. The invention also reduces the labor required for replacing the damper blocks and minimizes the debris left behind by the deteriorated refractory damper blocks.

Problems solved by technology

Because of the weight and size of the damper blocks, the baffles require large hydraulic pistons to raise and lower the damper block baffles within the ventilation ducts.

Because the extreme heat from the coke ovens, refractory damper blocks deteriorate over time and must be routinely replaced.

Replacing the bulky and heavy refractory damper blocks is labor intensive and cumbersome within the confined area of a coke oven ventilation system.

Multiple people are often required to handle the heavy cumbersome refractory damper blocks.

In addition, the often crumbling deteriorated refractory damper blocks leave debris in and around the ventilation system of the coke ovens.

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