BH Company has newly developed a new multi-tube cyclone dust collector (XX tube). The single tube can handle an air volume of 1000 m3 / h, which can improve the separation efficiency of the pellet residue separator and ensure the stability of the air volume and air pressure in the separation area of the separator.
Multi-tube cyclone dust collector is a type of dust collector. The mechanism of dust removal is to make the dust-containing airflow rotate, and the dust particles are separated from the airflow by the centrifugal force and trapped on the wall, and then the dust particles fall into the ash hopper by the action of gravity.
Ordinary cyclone dust collector is composed of simplified, cone and intake and exhaust pipes. The cyclone dust collector has a simple structure, is easy to manufacture, install, maintain and manage, and has low equipment investment and operating costs. It has been widely used to separate solid and liquid particles from airflow, or solid particles from liquids. Under normal operating conditions, the centrifugal force acting on the particles is 5 to 2500 times that of gravity, so the efficiency of the multi-tube cyclone is significantly higher than that of the gravity settling chamber. Mostly used to remove particles above 3μm, the parallel multi-tube cyclone device also has 80-85% dust removal efficiency for particles of 3μm.
working principle
The dust removal mechanism of the multi-tube cyclone dust collector is to make the dust-containing air flow rotate, and the dust particles are separated from the air flow by the centrifugal force and trapped on the wall, and then the dust particles fall into the ash hopper by gravity. The multi-tube cyclone has been developed into various types. According to its flow entry mode, it can be divided into tangential entry type and axial entry type. Under the same pressure loss, the gas that the latter can process is about 3 times that of the former, and the gas flow is evenly distributed. Ordinary cyclone dust collector is composed of simplified, cone and intake and exhaust pipes. The cyclone dust collector has a simple structure, is easy to manufacture, install, maintain and manage, and has low equipment investment and operating costs. It has been widely used to separate solid and liquid particles from airflow, or solid particles from liquids. Under normal operating conditions, the centrifugal force acting on the particles is 5 to 2500 times that of gravity, so the efficiency of the multi-tube cyclone is significantly higher than that of the gravity settling chamber. Mostly used to remove particles above 0.3μm, the parallel multi-tube cyclone device also has 80-85% dust removal efficiency for particles of 3μm. The cyclone dust collector constructed with special metal or ceramic materials resistant to high temperature, wear and corrosion and clothing can be operated under the conditions of temperature up to 1000 ℃ and pressure up to 500 × 105Pa. Considering the technical and economic aspects, the pressure loss control range of the cyclone dust collector is generally 500-2000Pa. Multi-tube cyclone dust collector means that multiple cyclone dust collectors are used in parallel to form an integrated body and share the intake and exhaust chambers, and the common ash hopper to form a multi-tube dust collector. Each cyclone in a multi-tube cyclone should have a moderate size and a moderate quantity, and the inner diameter should not be too small because it is too small to easily block.
The multi-tube cyclone dust collector is a cyclone dust collector with secondary air added. Its working principle is that when the airflow rotates in the dust collector shell, the secondary airflow is used to strengthen the rotation of the purified gas to improve the dust removal effect. There are two ways to achieve this rotation, and discharge the dust into the ash hopper. The first method is to transport the secondary gas through a special opening along the periphery of the shell at an angle of 30-40 degrees from the horizontal.
The second method is to transport the secondary gas through an annular oblique flow gas with inclined blades to swirl the purified gas. From an economic point of view, dust-containing gas can be used as the secondary air flow. When the purified gas needs to be cooled, sometimes outdoor air can be used to swirl it. The technical parameters of the cyclone dust collector are close to the ordinary cyclone.
At present, the application of the air inlet dust removal in mines and factories has shown good momentum. Another small part of the airflow flowing into the air inlet of the multi-tube cyclone will move toward the top of the multi-tube cyclone, and then move down along the outside of the exhaust pipe. The upward central air flow is discharged from the air pipe together with the rising central airflow, and the dust particles dispersed in it are also taken away. After the rotating airflow reaches the bottom of the cone. Turn up along the axis of the dust collector. An ascending internal swirling air flow is formed and discharged by the exhaust pipe of the dust collector. The dust removal efficiency can reach more than 80%, and the special cyclone dust collector has been improved in recent years. Its dust removal efficiency can reach more than 5%. The vast majority of the rotating air flow is self-circular along the wall, spiraling from top to bottom toward the bottom of the cone, forming a descending external swirling dust-containing air flow.
The centrifugal force generated during the intense rotation will spread the density far The dust particles of the gas are thrown toward the wall of the container. Once the dust particles come into contact with the wall, they lose the inertial force and rely on the momentum of the inlet speed and their own gravity to fall into the ash collection hopper along the wall. The multi-tube cyclone dust collector is a cyclone dust collector with several cyclones connected in parallel. Common use of access pipes and ash buckets. It is important to design the gas velocity of the air inlet of the dust collector. Generally not less than 18m / s. If it is too low, the processing efficiency will be reduced, and there is a danger of clogging. If it is too high, the cyclone will wear seriously and the resistance will increase significantly. The dust removal effect will not change significantly. The multi-tube cyclone has no rotating parts and wearing parts, so it is very convenient to use and maintain. The cyclone is the internal part of the multi-tube cyclone dust collector, which is equivalent to the filter dust bag of the bag dust collector. According to the conditions of use, different materials can be used to make cyclones, such as steel plates. When used in series with a high-performance dust collector, the cyclone is placed in the front stage. The dust discharged through comprehensive dust removal can meet the emission standards stipulated by the State Environmental Protection Administration.
Post time: Mar-16-2022