Rosewool Insulation Refractory Co.,Ltd.
Loading, transportation, and orderly unloading - Recently, another batch of high-quality ceramic fiber blankets from Rosewool Insulation Refractory Co.,Ltd. has safely arrived at the site of a large power plant project in China. This is the customer's repeated purchase, and the customer feedback is: "Rosewool Insulation Refractory Co.,Ltd.'s ceramic fiber blanket has a uniform texture, easy construction, and insulation effect far exceeds expectations, greatly reducing the heat loss of the unit
The core equipment such as boilers, steam turbines, and steam pipelines in power plants are subjected to high temperature and high pressure conditions for a long time, and the insulation effect directly affects the thermal efficiency and operational safety of the units. Traditional insulation materials are prone to shrinkage and cracking in long-term high-temperature environments, forming a thermal bridge effect and continuously deteriorating insulation performance. Ceramic fiber blanket has become the preferred insulation solution for high-temperature equipment in power plants due to its excellent performance of long-term temperature resistance above 1260 ℃ and extremely low thermal conductivity.
The boiler is the area with the highest temperature in the power plant. Ceramic fiber blanket, as a lining for furnace walls, can withstand high temperature impacts above 1200 ℃. After adopting the composite structure of "ceramic fiber blanket+calcium silicate tube shell" in a certain 600MW unit, the heat dissipation loss of the furnace wall was reduced by 28%, and the exhaust temperature decreased by 15 ℃. By adopting a layered insulation structure, the boiler's thermal efficiency has been improved by 2.6 percentage points after renovation, saving approximately 12000 tons of standard coal annually, and the investment payback period is only 18 months.
The main steam temperature of the power plant is as high as 540-566 ℃. After being wrapped with ceramic fiber blanket, it can significantly reduce the heat loss during steam transportation and improve the thermal efficiency of the unit. High quality zirconium containing products can withstand temperatures up to 1430 ℃, fully meeting the insulation needs of ultra-high temperature pipelines in power plants.
The steam turbine operates continuously under vibration, and traditional hard calcium silicate boards are prone to cracking, falling off, and powdering. After adopting the "ceramic fiber blanket+wire mesh plastering" scheme, the surface temperature of the cylinder body decreased from 550 ℃ to 420 ℃, and the thermal stress fatigue cracks were reduced by 40%. It can be made into a detachable insulation sleeve for use in irregular parts such as upper cylinders, flanges, valves, etc., ensuring insulation effect and facilitating maintenance.
The flue, dust collector, and desulfurization equipment are subject to long-term erosion by high-temperature flue gas. Ceramic fiber blanket grade A is non combustible, has good thermal shock resistance, chemical stability, can effectively resist smoke corrosion, and has a long service life.
1. Lower thermal capacity and thermal conductivity compared to similar products;
2. The fiber diameter is uniform, and the slag ball content is lower in products with same density; If the slag ball content is less than 5%,
3. Stable chemical properties and powder free use;
4. Same density products have higher tensile strength; The tensile strength far exceeds 110KPA;
5. High flatness, cutting construction without burrs;
6. Good thermal shock resistance and long service life;
Low thermal conductivity, high efficiency and energy saving - The thermal conductivity of ceramic fiber blanket is as low as 0.08W/(m · K) at 800 ℃, which is 40% lower than traditional materials. A power plant renovation case shows that the surface temperature of the furnace shell decreased from 325 ℃ to 198 ℃, reducing heat loss by 62%.
Thermal shock resistance and durability - able to withstand rapid cooling and heating cycles from 1000 ℃ to room temperature without cracking. After replacing the inner insulation layer of a certain power plant with ceramic fiber blanket from calcium silicate, the maintenance cycle was extended from 3 months to 6 months, and the annual coal consumption was reduced by 2 million yuan.
Lightweight, efficient, and easy to construct - compared to the traditional insulation thickness of 230mm for refractory bricks, ceramic fiber blankets can achieve equivalent or even better insulation effects with only 60mm, increasing space utilization by 74%. Flexible and customizable, greatly improving construction efficiency.
As a leading manufacturer of insulation and refractory materials for over 40 years, Rosewool Insulation Refractory Co.,Ltd. has an annual production line of 80000 cubic meters of ceramic fiber products, certified by ISO9001, and its products are exported to more than 80 countries and regions. Provide professional services throughout the entire process, from selection guidance to on-site technical support.
