Biotech And Pharmaceuticals
25 Apr 2021


25 Apr 2021

GUANGZHOU DEVOTION THERMAL TECHNOLOGY CO., LTD. was founded in 1993, a company with three primary business segments: clean energy comprehensive service, industrial boiler manufacturing, and indoor health and environmental management. 

GUANGZHOU DEVOTION independently develops the technology, and the process of bio-oil preparation has become mature. The whole bio-oil production process includes high-temperature cracking (primary reaction), high-temperature purification, rapid condensation, reheating, and other functions. Through the agricultural and forestry waste cracking ecological oil technology, biomass can be quickly cracked, and finally, environmental oil, biomass carbon, and biogas can be obtained. This kind of transformation needs millions of years in nature that can be realized in 1-2 seconds. The yield of ecological oil can reach 50-70%, and the realization of turning waste into treasure - two seconds is equal to millions of years.

As the core equipment of the whole process preparation, Accessen provided the AWD series of heat exchangers, which were more efficient and easier to maintain for customers. This heat solution was used in the cooling process of bio-oil, which reduced the temperature of bio-oil to the required temperature and fully recovered heat energy during the cooling process. 

The full-welded AWD series can effectively avoid the influence of low acidity (pH = 3.7), acetic acid, and alcohol on the swelling and aging of rubber gasket. The viscosity property of bio-oil is similar to that of heavy oil at an average temperature. With the increase of temperature, the viscosity will decrease, solidifying when it shut down for maintenance. Therefore, it is required to disassemble the traditional gaskets for mechanical cleaning. Due to the influence of materials, the gaskets are easy to deform and can’t be used again after disassembly. All the gaskets need to be replaced (about three times/year), so the operation and maintenance cost is extremely high. However, it is convenient for mechanical cleaning in the maintenance process through the full-welded and one-side detachable design, which ensures the heat exchange efficiency and the corrosion of various acidic media to the minimum and reduces the daily operation and maintenance costs. 

The comprehensive technical indexes such as heat exchange efficiency, oil, and acid-proof can meet the process requirements well.