2024-10-23
Botou Xintian Environmental Protection Equipment Co., Ltd. is a professional manufacturer and trader of dust removal equipment and dust removal accessories, integrating research and development, design, equipment manufacturing, on-site installation, and commissioning.
For many years, our company has designed and manufactured a large number of large and medium-sized dust removal equipment for kiln heads, kiln tails, dryers, cement plant silos, iron gates, roasting, ore tanks, steel industry feeding, steelmaking secondary smoke and dust, LF lining furnaces and other dust removal systems.
I、 How to choose an industrial dust collector suitable for enterprises
1. Consider the characteristics of dust
-Dust particle size
-For dust with larger particle sizes (such as greater than 10 μ m), such as coarse particle dust generated from sand and gravel processing, gravity settling chambers or cyclone dust collectors may be able to meet basic dust removal needs. Because larger particles of dust are more easily separated under the action of gravity or centrifugal force.
-For dust with smaller particle sizes (such as less than 10 μ m, especially fine particles such as PM2.5), such as welding fumes, chemical dust, etc., efficient dust removal equipment such as bag filters, electrostatic precipitators, or filter cartridges are needed. They can effectively capture fine particles through filtration or electrostatic adsorption.
-Chemical properties of dust
-If the dust is flammable, such as flour, coal powder, etc., it is necessary to avoid using dust removal equipment that may generate sparks and choose dust collectors with explosion-proof design. For example, in a flour processing plant, a pulse bag filter with explosion-proof certification should be selected, which has special explosion-proof design in terms of structure and electrical control to prevent dust explosions.
-If the dust is corrosive, such as acidic or alkaline dust generated in some chemical production processes, the material of the dust collector needs to have corresponding corrosion resistance. If stainless steel material is used for the dust collector casing and internal components to ensure the service life of the equipment.
-Dust concentration
-When the dust concentration is low, such as in some electronic chip manufacturing workshops, although the amount of dust generated is small, the air quality requirements are extremely high. At this time, high-efficiency filtering small dust collectors, such as filter cartridge dust collectors, can be selected, which can achieve high filtration efficiency with low pressure loss.
-For high concentration dust, such as discharge ports in cement plants and steel plants, it may be necessary to first use a cyclone dust collector for pre dust removal to reduce the dust concentration, and then connect it to a bag filter or other high-efficiency dust collector for fine dust removal to prevent high concentration dust from blocking the filter elements of the dust collector.
2. Consider air volume requirements
-Airflow refers to the volume of air passing through a dust collector per unit of time. Enterprises need to determine the required air volume based on factors such as the size of the production workshop, the number of production equipment, and operating conditions.
-For example, in a welding workshop with multiple welding stations working simultaneously, it is necessary to consider the speed at which each welding station generates smoke and the ventilation situation in the workshop. If the workshop area is large and there are many welding equipment, a larger air volume is needed to ensure timely and effective removal of welding fumes and prevent them from spreading in the workshop. Generally, the appropriate dust collector air volume is determined by calculating the ventilation volume of the workshop, including calculating the air exchange rate or adding the exhaust air volume of each dust source.
3. Consider the site space and layout of the enterprise
-Size of venue space
-If the site space of the enterprise is limited, such as some small processing enterprises located in the city center, it is necessary to choose compact dust collectors. Like a small filter cartridge dust collector, it has a relatively small volume and occupies a small area. It can be installed in corners or wall positions of the workshop without taking up too much production space.
-Complexity of site layout
-For enterprises with complex layouts, such as multi story factories or workshops with multiple functional areas, it is necessary to consider whether the pipeline laying of dust collectors is convenient. If the distance of pipeline laying is too long, it may increase pipeline resistance and affect the dust removal effect. In this case, a distributed small-scale dust collector can be selected and installed near each dust producing area to reduce pipeline length and lower resistance losses.
4. Consider the operation and maintenance costs of the dust collector
-Energy consumption cost
-Different types of dust collectors have different energy consumption. For example, the energy consumption of electrostatic precipitators is mainly in the power supply part of high-voltage electric fields, while the energy consumption of bag filters is mainly in the operation of fans and dust cleaning systems. When making a choice, it is necessary to consider factors such as the production time and electricity cost of the enterprise. If the enterprise operates continuously 24 hours a day, low-energy dust collectors may be more cost-effective.
-Maintenance cost
-The maintenance cost includes the cost of replacing filter materials, replacing vulnerable parts, and repairing equipment. The filter bag of a bag filter needs to be replaced regularly, usually every few months to years depending on the nature and usage of the dust. The price of filter bags varies depending on the material and specifications. The main vulnerable parts of a cyclone dust collector are wear-resistant lining, etc. If dealing with high hardness dust, the wear of the lining will be relatively fast, and the replacement cost needs to be considered.
5. Consider dust removal efficiency and emission standards
-Different industries have different emission standards, and enterprises should choose dust collectors that can meet the emission standards according to the industry and local environmental requirements. For example, in the thermal power generation industry, there are strict requirements for the emission standards of smoke and dust. Efficient electrostatic precipitators or bag filters combined with electrostatic precipitators are needed to ensure that the smoke and dust emission concentration is lower than the national standard, such as 30mg/m ³ (specific standards may vary depending on different regions and policies).
II、 The parameters that need to be provided to us
1. Dust characteristic parameters
-Dust particle size distribution
-It is preferable to provide a detailed particle size analysis report, including the proportion of dust particles in different particle size ranges (such as 0-5 μ m, 5-10 μ m, 10-20 μ m, etc.). This helps manufacturers accurately determine which dust removal method is most effective in capturing these particles.
-Chemical composition and properties of dust
-Inform the manufacturer whether the dust has chemical properties such as flammability, corrosiveness, and hygroscopicity. For example, if the dust contains chloride ions, it indicates that the dust may be corrosive, and manufacturers will consider using corrosion-resistant materials to manufacture dust collectors.
-Dust concentration range
-Provide the highest, lowest, and average dust concentrations at the point of dust generation. For example, at a coal loading and unloading dock, the dust concentration may be very high at the moment of unloading, reaching several hundred mg/m ³, while under normal conditions it may only be a few tens of mg/m ³. These data are crucial for manufacturers to determine the processing capacity of dust collectors.
2. Wind volume and pressure parameters
-Required air volume
-Accurate air volume data can enable manufacturers to select suitable fan and dust collector sizes for their businesses. The air volume data can be obtained through the design calculation of the workshop ventilation system or testing of the existing dust removal system. For example, a painting workshop calculates the required air volume per hour based on the number of painting equipment and painting process requirements, which is 10000m ³/h. Providing this data to the manufacturer can help them choose the appropriate equipment model.
-System resistance (wind pressure)
-Enterprises need to provide the expected resistance situation in the dust removal system, including the length, diameter, and number of bends of the pipeline, so that the manufacturer can calculate the required wind pressure for the system. Because the wind pressure determines the selection of the fan, insufficient wind pressure may result in the air volume not meeting the requirements, affecting the dust removal effect.
3. Site related parameters
-Size and shape of the venue space
-Provide information on the site plan and spatial height for installing dust collectors. For example, the site is a rectangular space with a length of 10m, a width of 8m, and a height of 4m. The manufacturer can determine whether the dust collector can be placed in the site based on these dimensions, and consider issues such as equipment access channels.
-Site environmental conditions
-Notify the manufacturer of the temperature and humidity range of the site, as well as any special environmental factors such as strong vibration sources, proximity to the sea (possible salt spray corrosion), etc. These environmental factors will affect the material selection and operational stability of the dust collector.
4. Working hours and frequency parameters
-Equipment operating time
-Please inform the manufacturer of the daily or weekly operating time required for the dust collector. For example, enterprises operate continuously in three shifts, running 24 hours a day, which requires higher durability and energy consumption of dust collectors compared to enterprises that only run for 8 hours a day.
-Operating frequency of dust generating equipment
-Provide the start and stop frequency of dust generating equipment (such as punching machines, cutting machines, etc.). If dust generating equipment is frequently started and stopped, it may cause significant instantaneous changes in dust concentration. Manufacturers need to consider this dynamic change when designing dust removal systems and adopt appropriate control strategies, such as variable frequency fans.
In recent years, with the acceleration of industry pace, enterprises have also made significant progress, which has given our company a great opportunity to showcase our technological strength. We have provided a large number of equipment and accessories for the metallurgical, chemical, building materials, and non-ferrous metal industries, especially for many mining enterprises, and have gained the trust and widespread praise of our customers.