Dispersants can be divided into low molecular dispersants and high molecular dispersants. The role of dispersants is to use wetting dispersants to reduce the time and energy needed to complete the dispersion process, stabilize the dispersed pigment dispersions, modify the surface properties of pigment particles, and adjust the movement of pigment particles. The commonly used dispersant is pigment dispersant, which reduces the interfacial tension between pigments or fillers and carriers. It is suitable for all coating systems (regardless of solvent-free coatings) and does not affect the application period of two-component systems. Efka dispersant is used for high - quality solvent - based colorants of inorganic and organic pigments against flocculation. Used for dispersing inorganic and organic pigments in high quality solvent - based colorings. Anti float color, flower, phase separation, delay PS material floating time. Dispersing Agent,High molecular dispersant, low molecular dispersant Jiangyin Thousands Chemicals Co. , https://www.wqhxcomposite.com
The operating results of the cyclone separator on Guangzhou Petrochemical's 2 million-ton/year catalytic converter show that the dust concentration at the outlet of the separator is less than 40 mg/m3, and the measured pressure drop is less than 12 kPa. Particle dust larger than 8 microns is basically separated.
It is understood that domestic oil refining companies have more than 100 sets of catalytic cracking units, and more than 95% use flue gas turbines to recover energy. The three-stage cyclone separator, which is known as the protector of the smoke machine, is an important dust removal device for flue gas and energy recovery. Its role is to use the principle of centrifugal separation to allow the dust-laden gas to rotate at high speed in the separator to achieve the protection of the smoke machine. effect.
Since Daqing Petrochemical Company Machinery Plant produced the first three-stage cyclone separator for catalytic cracking in China in 1984, it has been dedicated to the exploration and research of high-efficiency and long-cycle three-stage cyclones. In recent years, the plant has built the most advanced automatic control cyclone separation test device in China, and developed a new three-spin single-pipe structure with high wear-resistant ceramics as the inner lining, and it was used as a catalytic device in Guangzhou Petrochemical last February. Test run. After application, the problem of dust fouling and clogging in the original steel cyclone separator was solved. While reducing the system pressure drop, the single pipe throughput was increased, the smoke gas treatment capacity was increased by more than 1.5 times, and high-efficiency recycling of smoke was realized. The purpose of gas energy, extending the life of the hood and reducing the emission of harmful substances.
At present, China's refinery catalytic cracking unit generally uses stainless steel lining three-stage cyclone separator, due to poor wear resistance of conventional steel cyclone separator, the service life is only about 6 years. The new ceramic liner lining three-rotary single pipe 10 times the wear resistance of steel materials, the service life can be extended to 15 to 20 years, and easy replacement, saving steel, annual savings of more than 100 million yuan in savings. Experts said that this technology has high promotion value in refining companies.
Daqing Petrochemical develops efficient cyclone separator
Dust is cleaner and service life is up to 20 years. Guangzhou Petrochemical Company recently reported that the ceramic-lined, single-pipe, three-stage cyclone separator developed by the Daqing Petrochemical Company Machinery Plant has been operating for more than one year. The technical indicators have reached the international advanced level. .