The oil is removed by catalytic cracking method of conversion degreaser.
Whether the oil removal is by filter or activated carbon adsorption, there are many disadvantages, and the oil removal effect is not stable. For some demanding industries, the above oil removal methods are not enough. At present, the more advanced method is to remove oil from compressed air by using the principle of catalytic cracking. Catalytic cracking, as the name suggests, is to use chemical methods to change the molecular chain of oil through fission and decomposition, so as to lose the characteristics of oil molecules and achieve the purpose of oil removal. The products represented by oil-free catalytic engine make use of this principle to make the treated compressed air reach oil-free state. The working principle of the equipment is as follows: the compressed air requiring oil removal enters the tank with catalyst after preheating by the heat exchanger. The tank is equipped with a temperature control system to control the reaction temperature at about 150 ℃. Under the action of catalyst and oxygen, the long molecular chain in the compressed air breaks into short molecular chain, and the short molecular chain continues to break into shorter molecular chain, Oxygen atoms can be attached to the inner surface of the catalyst particle micropores, and the oil-containing compressed air enters the micropores. When the oxygen molecules are close to the inner surface of the catalyst particle micropores, they are decomposed into two oxygen atoms and attached to the inner surface. When the oil molecular chain contacts the inner surface of the micropore, one carbon atom and two oxygen atoms are combined into carbon dioxide molecules, while two hydrogen atoms are combined with one oxygen atom into water molecules. The oil molecular chain is also broken and separated from the inner surface of the micropore with carbon dioxide and water molecules. The broken oil molecular chain continues to undergo the same chemical reaction. The broken oil molecular chains continue to undergo the same chemical reaction until all oil molecular chains are broken and react with oxygen atoms. Until the end, only carbon dioxide and water are used as reaction products. The reactant is cooled by the heat exchanger together with the compressed air and enters the rear pipe.
In fact, the cracking of oil molecules is almost completed "instantaneously", and the reaction speed is very fast, so after this series of steps, the oil in compressed air can be completely treated. Because the catalyst is only used for catalytic cracking reaction, it does not participate in the reaction itself.
Therefore, the catalyst itself has a very long service life, and the catalyst can ensure good catalytic cracking reaction. Moreover, the oil removal effect will not decrease with the passage of time, which can ensure the stable oil removal effect during the whole life of the equipment. And the oil content in the compressed air after oil-free catalytic cracking can be better than the grade 1 oil content standard of ISO 8573-1 standard. At the same time, because the temperature of oil-free catalytic cracking process is as high as 150 ° C, there are no live bacteria, cocci and viruses in the compressed air treated by oil-free catalytic machine. The catalytic cracking method can remove the oil vapor, oil aerosol and even liquid oil droplets in the compressed air. Due to the chemical method, the oil removal speed and efficiency are very high. Almost all the oil in the compressed air can be removed, which can fully meet the grade 1 oil content standard of the national standard GB / T 13277.1-2016 and ISO 8573-1.
DEAR air separation brings together a number of experts and technical elites in the air separation industry to have an in-depth understanding of the principles of air separation in all directions. It provides a platform for technological innovation, project R & D and achievement sharing in the air separation industry. Give full play to the advantages of scientific research resources such as talents, technology and equipment of various technical departments to form scientific research clusters, so as to achieve resource sharing, complementary advantages, improve the research efficiency and efficiency of the project, and realize the integration and resource clustering of scientific research management.
In addition, DEAR air separation spent a lot of money to build intelligent air separation equipment, which reduces the energy consumption of air separation equipment by 5% - 15%, ensures that the product quality is close to zero defects, improves the accuracy of air separation equipment and shortens the scheduled cycle. Scientific and technological innovation + management innovation initiated the reform of the air separation industry model, and developed a remote intelligent monitoring system with the help of Internet technology. Realize the functions of remote control, automatic data collection and analysis, and achieve early detection and early warning of equipment faults.
DEAR air separation engineering technology team has experts and professional technicians who have been engaged in the construction of air separation projects for a long time. It provides users with various engineering business process planning services, establishes a systematic and standardized service guarantee system, and comprehensively uses the knowledge and experience of engineering technology to ensure that each link is implemented in place and handled carefully, so as to reassure and satisfy customers.
