2results about How to "Achieve longevity" patented technology

The present application belongs to the technical field of refractory material, and mainly relates to a configuration mode of water-coal-slurry gasifier lining refractory material. The conical bottom lining of the water-coal-slurry gasifier is composed of working lining refractory material directly contacted with molten slag and back lining refractory material not directly contacted with molten slag. The working lining refractory material is made of silicon carbide-oxide composite shaped refractory material product without Cr2O3. The back lining refractory material is made of Al2O3-SiC-C composite refractory material without Cr2O3. The hot-state bending strength of the silicon carbide-oxide composite refractory material is 25-50 MPa under 1400 DEG C carbon burying, and the thermal shock resistance of the material is greater than or equal to 20 times under 1100 DEG C-ambient temperature water cooling. The thickness of the working lining refractory material is 30%-50% of the sum of the thicknesses of the working lining refractory material and the back lining refractory material. The present application has the advantages of green environmental protection, long service life, safety and the like, and can realize the greenization, long service life and light weight of the lining.

The application discloses a rotary kiln composite lining structure and belongs to the technical field of thermal equipment. The rotary kiln composite lining is designed by a structure of a working layer, a functional layer and an anchoring structure, integrates the concepts of mechanical reinforcement and energy-saving protection, and can realize good structural stability and heat insulation performance. Through efficient reflection of radiant heat by a reflection layer, cooperative heat conduction blocking of a heat preservation layer and a heat insulation layer, resistance to corrosion and stress buffering of a protection layer, and anti-abrasion and high-temperature corrosion resistance of the working layer, a hierarchical heat protection system is formed. In combination with a quasi-flexible connection system in the anchoring structure, the rotary kiln thermal expansion stress and shear stress in the rotating process can be reduced under the premise of ensuring the connection strength, and the overall stability of the structural layer is improved. The rotary kiln composite lining provided by the application has mechanical strength and heat insulation performance, can obtain a relatively long service life, and realizes efficient energy saving of the rotary kiln.