“One-layer coating solves the problem of cooling super-refined spherical tanks”
The IECOC°C coating was successfully applied on a 3,000-cubic-meter spherical tank at Hainan Refining Plant, and its cooling and water-saving effects were verified.
2026-09-07 08:00Products & Apps🔥 47.2 heat score
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On September 7, 2026, the IECOC°C radiation-induced cooling coating developed by China Construction Zhonghan and Harbin Institute of Technology was successfully applied to a 3,000-cubic-meter spherical tank at Danzhou Refining Plant in Hainan. This coating is composed of special inorganic fillers combined with polymer resins, featuring high reflectivity and strong infrared emission properties. It can achieve autonomous cooling around the clock without the need for electricity or refrigerants. Tests showed that after application, the surface temperature of the sphere decreased by approximately 25°C, while the temperature of the medium inside the tank dropped by about 6.8°C, saving 35 tons of water per day. To address the problem of “optical crowding” in traditional materials, the team adopted a multi-bandgap particle complementary coupling mechanism, reducing the coating thickness from 500 microns to 100 microns. Both the solar reflectivity and atmospheric window emissivity reached 97%. After 180 days of field testing and accelerated aging tests, the coating can withstand 40,000 brushings, with an effective protection period of up to 15 years. Currently, the Changyuan base in Henan has established full-process process standards, with an annual supply capacity of 600,000 tons.
Approximately 25°CReduction in surface temperature
Approximately 6.8°CCooling extent of the medium
35 tonsAverage daily water savings
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China Construction ZhonghanChina PetrochemicalHarbin Institute of TechnologyLi XiangWang Fuqiang
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The IECOC°C coating was successfully applied on a 3,000-cubic-meter spherical tank at Hainan Refining Plant, and its cooling and water-saving effects were verified.
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2026-09-07
The IECOC°C coating was successfully applied to the spherical tanks at Hainan Refining Plant.
The IECOC°C radiation-cooled coating developed by China Construction Zhonghan and Harbin Institute of Technology was successfully applied to a 3,000-cubic-meter spherical tank at Danzhou Refining Plant in Hainan. It can achieve autonomous cooling around the clock without electricity or refrigerants. Tests showed that after coating, the surface temperature of the sphere decreased by approximately 25°C, and the medium inside the tank cooled by about 6.8°C, resulting in an average daily water savings of 35 tons.
The IECOC°C radiation-cooled coating developed by China Construction Zhonghan and Harbin Institute of Technology was successfully applied to the 3,000 cubic meter spherical tanks at Hainan Refining Plant, achieving autonomous cooling without the use of electricity or refrigerants. Thanks to its high reflectivity and strong infrared radiation properties, the surface temperature of the tanks dropped by approximately 25°C on clear days, and the temperature of the medium inside the tanks decreased by about 6.8°C. This significantly reduces water consumption compared to traditional spraying systems, which require 35 tons of water per day. To address the problem of “optical crowding,” the team used a multi-gap particle complementary coupling mechanism to reduce the coating thickness from 500 microns to 100 microns, achieving a solar reflectivity and atmospheric window emissivity of 97%. After 180 days of on-site testing and accelerated aging tests, the coating can withstand 40,000 washes, with an effective protection period of up to 15 years. Currently, the Henan Changyuan base has established full-process process standards, with an annual supply capacity of 600,000 tons.
The IECOC°C radiation-cooled coating developed by China Construction Zhonghan and Harbin Institute of Technology has successfully solved the problem of cooling refining spherical tanks. This coating is composed of special inorganic fillers combined with polymer resins, featuring high reflectivity and strong infrared emission properties. It can achieve autonomous cooling throughout the day without the need for electricity or refrigerants. In a pilot project at the 136-tank area in Danzhou, Hainan, the surface temperature of the spheres decreased by approximately 25°C after coating, while the temperature of the media inside the tanks dropped by about 6.8°C, saving 35 tons of water per day. To address the “optical crowding” problem of traditional materials, the team innovatively adopted a multi-bandgap particle complementary coupling mechanism, reducing the coating thickness from 500 microns to 100 microns. Both the solar reflectivity and atmospheric window emissivity reached 97%. After 180 days of field testing and accelerated aging tests, the coating can withstand 40,000 washes, with a protective period of up to 15 years. Currently, the Changyuan base in Henan has established full-process process standards, with an annual supply capacity of 600,000 tons.