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Down draft kiln

The technology of a reverse flame kiln and a furnace body is applied in the field of the reverse flame kiln, which can solve problems such as low thermal efficiency, and achieve the effects of increased flame volume, high calcination temperature, and uniform temperature distribution in the furnace.

Inactive Publication Date: 2010-09-29
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiency of low thermal efficiency and provide a downdraft kiln that saves energy, has high heat utilization rate and protects the environment

Method used

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Embodiment 1

[0023] Furnace body 2 is composed of refractory brick layer 6, heat insulation layer 7, heat preservation layer 8 and shell 9. There are flue gas air inlet and outlet 5 on both sides of the bottom of furnace body 1, and there is heat storage body 10 inside flue gas air inlet and outlet 5. , above the flue gas air inlet and outlet 5, and located at the lower part of the furnace body 2, a fuel nozzle 3 is provided, between the flue gas air inlet and outlet 5 and the fuel nozzle 3, and there is a fire suction hole 11 in the furnace 22, and the fire suction hole There is a retaining wall 12 below the 11 to divide the flue gas air inlet and outlet 5 on both sides into two parts, and a temperature measuring hole 4 is arranged on the top of the furnace body 2 .

[0024] The kiln adopts advanced high-temperature air combustion technology to improve the traditional downdraft kiln, isolates the main flue of the traditional downdraft kiln along the center line, and installs regenerators a...

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Abstract

The invention relates to a down draft kiln, consisting of a furnace body (2), a furnace door (1), a fuel nozzle (3), a hearth (22) and smoke and air exit and entrance (5). The down draft kiln is characterized in that the furnace body (2) consists of a refractory brick layer (6), a thermal protective coating (7), an insulating layer (8) and a shell (9). The smoke and air exit and entrance (5) are arranged at the two sides of the bottom of the furnace body (1) and are internally provided with heat accumulators (10), and the fuel nozzle (3) is arranged above the smoke and air exit and entrance (5) and at the lower part of the furnace body (2). A fire absorbing hole (11) is positioned in the hearth (22) and between the smoke and air exist and entrance (5) and the fuel nozzle (3), a retaining wall (12) is arranged below the fire absorbing hole (11) to divide the smoke and air exist and entrance (5) at the two sides into two parts, and the top of the furnace body (2) is provided with a temperature measuring hole (4). The invention has the advantages of energy source saving, high heat utilization rate and environment protection.

Description

technical field [0001] The invention relates to a downdraft kiln. Background technique [0002] The traditional downdraft kiln is a batch kiln. Its name is derived from the flame flow conditions. The flames produced by the combustion go up to the top of the kiln from the nozzle of the combustion chamber. Since the top of the kiln is sealed, the flame cannot continue to go up. The gap, from the fire suction hole at the bottom of the kiln, enters the branch flue, the main flue, and finally discharges from the chimney. Because the hot gas is light in weight and always floats on the top, people are used to calling the flame "shun" from bottom to top. And the flame flowing from top to bottom is called "inverted", which is the origin of the name "inverted flame kiln"! The existing downdraft kiln is widely used in ceramics, refractory materials, electronic materials, metallurgy and other industries. Its main disadvantages are high fuel consumption, low thermal efficiency, small...

Claims

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Application Information

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IPC IPC(8): F27B1/00F27B1/14F27D17/00
Inventor 高峰闫申任建全
Owner TAIYUAN UNIV OF TECH
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