At present, the foreign lubricant base oil production process is also the traditional phase of solvent refining and hydrogenation process. With the gradual upgrading of engine oil grades, the hydrogenation process has a promising future. According to Chevron, in the past 10 years, the US has 1.20 Mt/a solvent-based base oil plant shut down. It is expected that by 2001, the US will use the hydrogenation process to produce the total amount of base oil and cesium base oil. At 49% of production, the production capacity of terpenoid base oil in the Asia-Pacific region is also increasing. It is expected that by the year of 2002, the base oil produced by hydroisomerization technology will account for 25% and 30% of the total base oil.
In recent years, China National Petroleum Corporation has introduced IFP and Chevron technology and established production facilities in Lanzhou and Daqing. The Petrochemical Research Institute has also developed a solvent refining-hydroprocessing-solvent dewaxing technology (RLT). According to statistics, the total capacity of hydrogenation processes already built and proposed to date has reached 1.70 Mt/a. If these devices are guaranteed to be put into operation before 2005, China will have the capacity to produce approximately 1.00 Mt of hydrogenated lubricating oil base oil annually.
It is feasible to partially replace the solvent refining process with a hydrogenation process in some of China's enterprises that focus on the production of lubricating oil and have poor crude oil resources. In order to balance the paraffin production, most of the solvent refining and solvent dewaxing processes should be retained to meet the market demand for mid-range lubricants and industrial lubricants and paraffins.
HEPA filters
Describe:
High-efficiency Air Filters are mainly used to trap dust and suspended matter below 0.5um. The air purifier mainly consists of two parts: the filter core and the shell .
The basic requirements are high filtration efficiency, low flow resistance, and can be used continuously for a long time to reduce the cost of later consumables.
The filter element is the Air Filter , and the high-Efficiency Air Filter plays an important role in the air purification industry.
Characteristics:
Using ultrafine fiberglass paper as Filter Material, offset paper, aluminum film and other materials as partition board, glued with wood frame aluminum alloy, using special silicone rubber, no smell, no surface hardening, no crack for a long time, stable chemical properties, Corrosion resistant, can absorb the stress produced by thermal expansion and cold shrinkage without cracking, soft and hard, elastic recovery.
Each set is tested by sodium flame method. It has the characteristics of high filtration efficiency, low resistance and large dust capacity.
Applications:
High efficiency air filters can be widely used in optoelectronics, LCD liquid crystal manufacturing, biomedicine, precision instruments, beverage and food, PCB printing and other industries dust-free purification workshop air conditioning terminal. High efficiency and super high efficiency filters are used at the end of clean room. According to their structure, they can be divided into three types: high efficiency with partition board, high efficiency with no partition board, high efficiency with large air volume, super high efficiency filter and so on.
Hepa Air Filters,Hepa Filter,Intermediate Air Filters,Medium Effect Air Filters
Henan Sinofiltec Technology Co.,Ltd , http://www.sinofiltec.com