Junzheng editor analyzes how to choose dust bag in sandblasting workshop?
As for the bag type dust collector, the dust bag is its core component. The quality of the filter bag directly affects the dust removal power of the dust collector, and the life of the dust bag directly affects the operation cost of the dust collector.
Then what kind of raw materials should be used in the sand blasting workshop? The following is analyzed by Junzheng Xiaobian. The dust in the sand blasting workshop is due to the low hardness and small specific gravity in the sand. There is a lot of dust (such as river sand), so there will be a lot of dust to pollute the environment; the cause of silicosis that is harmful to the human body is that the sand contains a lot of free silicon (such as quartzite, granite, yellow sand, etc.). Therefore, the dust removal project is urgent.
Polyester needle-punched felt is made of non-woven needle-punched fibers, which are interwoven with fibers. The uniformly distributed thin fiber cloth is made of polyester staple fiber and polyester twisted yarn. The surface of the needle-punched felt is hot-rolled, sintered or coated. After the post-treatment, the surface is smooth and lubricated, and it is not easy to be blocked by dust. This filter has high strength, good elastic recovery function, stable fabric size, good abrasion resistance, large open space rate, good ventilation function, and long service life. Good dust removal effect, good mechanical function and acid and alkali resistance at room temperature. Polyester needle felt is the most commonly used filter material in room temperature dust removal filter bags. The polyester needle felt filter material is an external filter type filter material, and the dust is completely removed, which reduces the possibility that the dust will be compacted after forming a powder layer on the surface of the filter bag.
Characteristics of dust in the blasting workshop
1. As the main pollutant is composed of ore sand and rust dust, the particle size of the dust is approximately 1 ~ 100m, and the dust adhesion is low.
2. The dust exhaust gas generated by sand blasting has no significant directionality compared with the hot gas generated by combustion, and the dust infiltrates the workshop area.
Planning treatment planning and emission specifications
1. Planning treatment planning
Its planning and processing plan is that the system's processing air volume is not less than 15000m3 / h
According to the requirements of the project environmental impact report, it is necessary to discharge the dust pollutants through the exhaust pipe after the management, and the "Inductive Emission Standard for Air Pollutants" GB16297-1996, the dust concentration is 60mg / m3 or less.
According to the dust properties, processing air volume, gas temperature, dust concentration and other factors in the blasting workshop, the pulse bag dust collector is more suitable and can be useful for dust removal in the blasting workshop.
The main materials of dust-removing bag are: polyester needle-punched felt dust-removing bag, water-repellent and oil-repellent needle-punched felt dust-removing bag, anti-static dust-removing bag, three-proof dust-removing bag, acrylic dust-removing bag, flumes dust-removing bag, metas dust-removing bag, PPS dust-removing Cloth bags, P84 dust bag, 208 dust bag, etc. And the thickness of various dust-removing cloth bags varies in thickness. Among them, Jiangyin PPS high-temperature dust collection filter bag for general boiler flue gas desulfurization and dust removal is a kind of filter bag raw material. It has high air permeability, unique air-to-ground height, The high collection power and other advantages have won widespread attention in the shopping mall, and the amount of use accounts for most of the entire dust filter bag.
The bottom of Junzheng environmental protection polyester needle punched felt dusting bag is sewn with three layers of selvedges, and no burrs are exposed. The bottom of the bag is reinforced with ring cloth, and the filter bag is reasonably cut to reduce the seam. At the splicing position, the stacking overlap width is not less than 10mm, which improves the strength of the bottom of the bag and the ability to resist erosion. The upper end of the filter bag has good sealing function, high installation reliability and convenient bag replacement. Only 1-2 people can carry out bag changing operation through the flip top cover. The filter bag is loaded and unloaded in the clean room, without entering the filter room of the dust collector to ensure the clean working environment.
Our company has strong technical force, first-class production equipment, advanced detection system, sound management system, high-quality and efficient service system. The company's products are widely used in flue gas management and dust removal systems in ironmaking plants, steelmaking plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Filter waste gases such as waste incinerators, coal-fired boilers, and fluidized bed boilers. Asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites. Smelting flue gas filtration for aluminum electrolysis, lead, tin, zinc, copper and other rare metals, fine material recovery. Dust collection and fine material recovery in chemical, coke, carbon black, dye, and plastic. Dust management and purification collection for mining, grain processing, flour, electronics, wood processing, etc.
The processing of cloth bags is particularly important. In recent years, some small manufacturers have selected small sewing machines as processing equipment, and used residual threads as raw materials during processing. This makes the filter bag appear to be open, cracked, and dropped when it is not used for a long time. Although the bag size is slightly smaller, it can also be used, but after adsorption of dust with a large specific gravity, the bag drop phenomenon will occur after a period of use.