Maerz active lime kiln shell crack sealing device

Abstract

The invention relates to a Maerz active lime kiln shell crack sealing device, belonging to the technical field of Maerz active lime kiln equipment. The technical solutions are: a sealing plate (2) isarranged on the outside of the kiln shell crack (9), the sealing plate (2) is composed of an upper plate, a lower plate and a side plate, the longitudinal section is U-shaped, the U-shaped opening faces away from the kiln shell, the lower plate of the sealing plate (2) is fixed on the kiln body steel structure (8), a high temperature resistant sealing strip (6) is arranged between the upper plateof the sealing plate (2) and the larger diameter end of the kiln shell, a support assembly (1), a bolt (3), a nut (4) and a washer (5) are arranged between the upper plate and the lower plate of the sealing plate (2), the support assembly (1) is fixed to the lower plate of the sealing plate (2), the bolt (3) is fixed to the support assembly (1) and the bolt (3) is provided with the nut (4) and thewasher (5). The invention has the advantages that the sealing of the cracks in the kiln shell can be realized under the condition that the kiln is not stopped, and the escape of powder ash can be avoided.

Description

technical field [0001] The invention relates to a crack sealing device for a Maerz active lime kiln shell, belonging to the technical field of Maerz active lime kiln equipment. Background technique [0002] Maerz (Maerz) active lime kiln is the most advanced lime calcination equipment in the world. It has two kiln chambers arranged up and down and connected to each other. The diameter of the upper part of the kiln shell is larger than that of the lower part of the kiln shell. The unloading platform is set at the bottom of the kiln shell. , The unloading platform is welded on the steel structure of the kiln body. The steel structure of the kiln body is an integral part of the Maerz active lime kiln. It is welded by channel steel and angle steel plates to support the kiln body. [0003] The lime kiln is divided into preheating section, calcining section and cooling section from top to bottom. During production, limestone is loaded from the top of the lime kiln, gas is sprayed...

AI Technical Summary

Problems solved by technology

When the high-temperature lime block reaches the top of the unloading platform, since this part of the kiln chamber is a cooling section, the kiln shell is not protected by refractory materials. Long-term high temperature will cause deformation of this part of the kiln shell, cracking of the weld seam and formation of cracks, resulting in air leakage

Due to the continuous leakage of high-temperature airflow, the temperature of the unloading platform gradually rises, and the deformation of the kiln shell becomes more serious, which affects the technical parameters such as pressure and temperature of the lime kiln, and dust escapes, polluting the environment

[0005] Since the temperature of the kiln in this part reaches 150°C and the space is narrow, after cracks appear, the welding operation cannot be performed from the inside, so it can only be sealed from the outside, and the high-temperature-resistant ramming material is filled to the outside of the kiln shell and the kiln shell by means of packing seal. The narrow space of the steel structure is used to block the cracks in the kiln shell, but because the kiln body has a pressure of about 25Kpa, it is still unable to effectively restrain the dust from escaping.

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