SU1656304A1 - Canalized hearth of furnace - Google Patents

Abstract

The invention relates to the refractory industry, in particular to furnaces for the heat treatment of fibrous material, and can be used in the lining of channeled hearths. The goal is to eliminate shaped refractory products and to ensure uniform distribution of the coolant. Under contains the lower row 1 and the upper row covering it 2. The rows are made of standard normal refractory products 3. The lower rows 1 are laid with gaps between them on the casing 4 and form horizontal channels 5. The upper rows 2 are laid on the lower p The holes 1 intersect them and form vertical channels 6 above the horizontal channels 5. The lower rows 1 have latches from the horizontal displacement, and between the adjacent upper rows 2, to create vertical channels 6, the gaskets 8 are installed on the lower row 1. 1 ill.

Description

The invention relates to thermal units for the refractory industry, in particular to furnaces for heat treatment of fibrous material, and can be used for lining of sewer 5 hearth ..

The purpose of the invention is the exclusion of shaped refractory products and ensuring uniform distribution of the coolant. 10

The drawing shows a sewer under a furnace.

Under the furnace for heat treatment of refractory fibrous material contains the lower rows 1 and upper rows 2. The rows 15 are made of standard normal refractory products 3. The lower rows 1 are laid on the casing 4 with gaps between rows 50 120 mm and form horizontal channels

5. The upper rows are laid on top of the lower 20 rows, intersect them and form vertical channels 6 above the horizontal channels 5.

The lower rows 1 from horizontal displacement are fixed with metal rods 7 welded to the casing. To fix the upper rows 2 in the gaps between adjacent upper rows on the lower rows 1 are placed metal U-shaped gaskets 8 with a thickness of 5-10 mm, 30 covering the products of the lower row. The thickness of the gaskets is equal to the thickness of the gaps and can be different, as well as their length, depending on the required cross section of the vertical channels. Moreover, the cross section of the vertical channels 6 is smaller at the air inlet to the horizontal channels 5 than at the opposite ends of the horizontal channels.

To ensure two-way air supply, the horizontal channels 5 in the middle are blocked by a partition 9 of products 3.

Installation of the channeled furnace hearth is as follows. On the casing 4 along the bottom rows 1, metal rods are welded across the hearth 7. Then, from the products 3, lay the partition 9 and the lower rows 1 so that the rows are fixed by the rods 7 from horizontal displacement. After this, the upper rows 2 of the products 3 are laid across the lower rows 1, separating the rows with gaskets 8, which are installed on the products of the lower row 1.

During operation of the furnace for heat treatment of fibrous material, air is supplied to the horizontal channels 5 from opposite sides of the furnace, which, when cooling the casing 4, is heated. The horizontal movement of air is limited by the partition 9. From the horizontal channels 5, air rises along the vertical channels 6 into the working space of the furnace. In this case, the air flow in each of the vertical channels is the same due to the smaller cross-sections of the vertical channels at the air inlet to the horizontal channels than at the partition.

The invention allows to exclude shaped products and reduce the cost of manufacturing hearth products.

Claims (1)

Claim Channelized under the furnace, consisting of rows of refractory products, the lower of which form horizontal channels, and the upper vertical, which is characterized by the fact that, in order to eliminate shaped refractory products and ensure uniform distribution of the coolant, it is provided with fixatives placed in the lower rows and gaskets installed between adjacent upper rows on products of the lower row.