Jiangsu weigu fluid equipment introduction: what are the application scenarios of magnetic levitation blower?

With the core advantages of high efficiency, energy saving, low noise operation, maintenance-free, stepless speed regulation and convenient start and stop, the magnetic suspension blower is suitable for low pressure and medium and high flow blowing/boosting conditions in the industrial field, and can meet the requirements of environmental protection, energy saving and intelligent production. It has gradually replaced the traditional Roots blower and gearbox centrifugal blower and become the mainstream upgrade product of industrial blowing, and its core application scenarios cover municipal environmental protection, electric power, steel metallurgy, cement building materials and chemical industry.

First, municipal environmental protection: the core just needs scenes, accounting for the highest proportion.

It is the most important application field of magnetic levitation blower, which is suitable for the core blowing process of sewage treatment and garbage treatment, and meets the requirements of energy saving and low noise operation in environmental protection industry.

Aeration of sewage treatment plant

Process requirements: To provide continuous high-pressure air for microbial degradation of pollutants in biochemical pool (aerobic pool), it is required that the flow rate of blast equipment is adjustable, the pressure is stable, and it is suitable for the dynamic change of sewage treatment capacity (such as large flow rate during the day and small flow rate at night);

Adaptability advantages: stepless speed regulation can accurately match the dissolved oxygen demand of aeration tank, avoid the energy waste of traditional fan throttling regulation, and comprehensively save energy by 30% ~ 50%; No lubricating oil, to avoid oil pollution of sewage, in line with environmental protection emission standards; Low noise operation (70~85dB) to meet the noise requirements around the municipal sewage treatment plant;

Subdivision and adaptation: large-scale municipal sewage treatment plants (with a flow rate of more than 100 m/min) and small-scale sewage treatment stations in industrial parks (with a flow rate of 1 ~ 50 m/min) are all adapted, and single or multiple units can run in parallel.

Landfill leachate treatment/garbage incineration

Process requirements: aeration in aerobic biochemical link of leachate treatment, ventilation and combustion-supporting in silo before garbage incineration/supporting blast for flue gas treatment;

Adaptability advantages: strong load fluctuation resistance, which can cope with the instability of leachate treatment capacity; No wearing parts, suitable for the harsh working conditions of garbage treatment plants, and low maintenance cost.

Second, the power industry: energy-saving transformation core selection, suitable for desulfurization and denitrification/power plant aeration.

Adapting to the environmental protection supporting technology of thermal power and cogeneration power plants is the key equipment for energy-saving transformation of power plants, which meets the requirements of "reducing costs and increasing efficiency and ultra-low emissions" in the power industry.

Desulfurization and denitrification blast in power plant

Process requirements: In the process of wet desulfurization and SCR denitrification, high-pressure air is provided for oxidation fan and fluidization fan to promote the full reaction of desulfurizer (limestone) and denitrator (ammonia water), which requires stable operation, oil-free and accurate pressure;

Advantages of adaptation: high operation reliability (design life is 15~20 years), meeting the requirements of 24-hour continuous operation of power plants; There is no lubricating oil, so as to prevent oil from entering the desulfurization and denitrification system and affecting the reaction efficiency and flue gas emission index; Stepless speed regulation can adapt to boiler load change and reduce fan energy consumption.

Aeration of filter beside circulating water in power plant

Process requirements: provide high-pressure air for backwashing of quartz sand filter material in the filter beside circulating water, which requires short-time high-frequency start-stop and adjustable flow;

Adaptability advantages: convenient start and stop, no need for preheating, and frequent start and stop (the traditional roots blower is easy to damage the bearing); Speed regulation is fast, which can accurately match the flow demand of backwashing.

Iii. Iron and steel metallurgical industry: adapt to high-load working conditions and cover blast/fluidization/purging.

The iron and steel metallurgical industry has complex working conditions and high requirements for equipment stability. The magnetic suspension blower is suitable for the blowing, fluidization and purging processes of blast furnace, converter, cold rolling and other links to replace the traditional high-energy consumption blower.

Blast blast/coal injection fluidization of blast furnace

Process requirements: the combustion-supporting blast in blast furnace ironmaking and the fluidized transportation of pulverized coal in coal injection system require high equipment pressure and stable flow to adapt to the high temperature and dusty working conditions in metallurgical workshop;

Advantages of adaptation: the outlet pressure of single-stage compression can reach 0.15MPa (gauge pressure), which meets the pressure demand of blast furnace; No mechanical friction, high load continuous operation, low failure rate; Equipped with high efficiency air filter, it can adapt to dusty conditions and protect the impeller.

Blowing in pickling line of cold rolled strip steel

Process requirements: the acid solution in the pickling line is stirred, and the strip surface is blown and dried. The equipment is required to be oil-free and low-noise, so as to avoid oil pollution to the pickling solution and the strip surface;

Advantages of adaptation: no lubricating oil leakage, ensuring the quality of pickling products; Low noise operation to improve the working environment of metallurgical workshop.

4. Cement building materials industry: suitable for pneumatic conveying/homogenization, and resistant to harsh working conditions.

In the cement industry, the production links are dusty and the equipment needs to run continuously. The magnetic levitation blower is mainly adapted to the core technologies such as pneumatic conveying, raw meal homogenization and cement silo fluidization, which replaces the high energy consumption and high maintenance problems of the traditional roots blower.

Pneumatic conveying of cement raw meal/clinker

Process requirements: raw meal powder and cement clinker are pneumatically transported to homogenization warehouse and finished product warehouse through pipelines, and the fan is required to have large flow rate and stable pressure, which is suitable for the transportation of high-concentration dust;

Advantages of adaptation: stepless speed regulation can adapt to the change of conveying capacity and avoid pipeline blockage; No vulnerable transmission parts, resistant to dusty conditions, maintenance only needs to replace the air filter regularly, reducing labor costs.

Fluidized blast at the bottom of cement silo

Process requirements: provide high-pressure air for the fluidized devices at the bottom of cement silo and raw material silo, so as to make the powder in a fluidized state, prevent arching and blockage, and require the fans to run for a long time with low load and stable pressure;

Advantages of adaptation: it can run stably at low speed and low load (the efficiency of traditional roots blower at low load is extremely low), and the energy consumption is greatly reduced; Stable operation, no vibration, avoiding powder agglomeration caused by fan vibration.

V. Chemical industry: meeting the requirements of oil-free/explosion-proof, covering gas transportation/reactive blast.

The chemical industry requires high oil-free, explosion-proof and sealing performance of equipment. The magnetic levitation blower is suitable for basic chemical industry, fine chemical industry, gas transportation, reactor blowing, wastewater treatment and other processes, and some explosion-proof types can be suitable for flammable and explosive working conditions.

Pneumatic conveying of chemical raw materials

Process requirements: Plastic particles and chemical powder (such as soda ash and baking soda) are pneumatically transported through pipelines, and the equipment is required to be oil-free to avoid oil pollution of raw materials;

Advantages of adaptation: no lubricating oil design, eliminating oil pollution from the root and ensuring the purity of chemical raw materials; The speed regulation is accurate, which can meet the transportation requirements of powder with different particle sizes and prevent the pipeline from blocking.

Blast aeration of reaction kettle/chemical wastewater treatment

Process requirements: oxidation reaction blast of chemical reaction kettle, aerobic aeration of wastewater treatment in chemical park, and explosion-proof in some working conditions;

Adaptability advantages: explosion-proof magnetic levitation blower (Ex d IIB T4) can be customized to adapt to the flammable and explosive working conditions of chemical workshop; Stable operation, 24-hour continuous operation, matching the continuous demand of chemical production.

Inert gas pressurized transportation

Process requirements: pressurized transportation of inert gases such as nitrogen and argon (such as gas sealing of chemical storage tanks and inert gas protection) requires good equipment sealing and no gas leakage;

Advantages of adaptation: the compression cavity is completely sealed and isolated from the rotor area, with good sealing performance and extremely low gas leakage rate; Oil-free operation, to avoid inert gas pollution by oil pollution.

Sixth, the new energy industry: emerging core scenarios, suitable for photovoltaic/hydrogen/lithium batteries.

The new energy industry is a rapidly growing application scenario of magnetic levitation blower, which meets the high-end, energy-saving and oil-free needs of photovoltaic, hydrogen energy and lithium battery industries, and is mainly suitable for preparing hydrogen, silicon material production, lithium battery material transportation and other processes.

Photovoltaic hydrogen production/green electricity hydrogen production pressurization

Process requirements: pressurized transportation of hydrogen/oxygen for hydrogen production by electrolysis of water, and blast in reduction furnace for photovoltaic silicon production require oil-free equipment, high purity and stable operation;

Advantages of adaptation: no lubricating oil, ensuring the high purity of hydrogen and silicon materials, and avoiding the influence of oil pollution on hydrogen production efficiency and silicon material quality; Efficient and energy-saving, meeting the "zero carbon" demand of hydrogen production by green electricity.

Pneumatic conveying of lithium battery materials

Technological requirements: Pneumatic conveying of powder materials for lithium battery anode and cathode materials (such as Ferrous lithium phosphate and ternary materials) requires oil-free equipment and low vibration to avoid powder pollution and agglomeration;

Advantages of adaptation: oil-free operation, ensuring the purity of lithium battery materials; Vibration value ≤0.05mm/s, low vibration transportation, to prevent the powder from arching due to vibration and ensure the uniformity of transportation.

Seven, light textile/food and beverage: to meet the oil-free/health needs, covering aeration/air supply.

Light textile and food and beverage industries have high requirements for oil-free, hygienic and low noise equipment, and magnetic levitation blower is suitable for aeration, air supply and material conveying processes of wastewater treatment, textile printing and dyeing, and food processing.

Textile printing and dyeing wastewater treatment/air supply in printing and dyeing workshop

Process requirements: aerobic biochemical aeration of printing and dyeing wastewater and air supply by setting machine in printing and dyeing workshop require low noise and oil-free equipment to avoid oil pollution of printing and dyeing fabrics;

Adaptability advantages: low noise operation, improving the working environment of textile workshop; Oil-free design prevents oil pollution from entering the printing and dyeing process and ensures the quality of cloth.

Wastewater treatment/material transportation in food and beverage industry

Technological requirements: aeration of wastewater treatment and pneumatic conveying of grain/food powder (such as flour and milk powder) in food and beverage factories require sanitary equipment, oil-free equipment and food-grade standards;

Advantages of adaptation: no lubricating oil leakage, meeting the requirements of food hygiene (food-grade seal can be customized); It runs stably, can meet the intermittent production needs of food factories, and is convenient to start and stop.

Supplement: Key points of selection of magnetic levitation blower (suitable for each scene)

Pressure matching: the outlet pressure (gauge pressure) is selected according to the process requirements, which is 0.04~0.15MPa in general, and multiple parallel or customized high-pressure types can be selected for high-pressure working conditions;

Flow matching: according to the process maximum flow+allowance (10%~20%), stepless speed regulation is used to adapt to flow fluctuation to avoid big horse-drawn cars;

Working condition adaptation: high efficiency air filter for dusty working conditions, customized explosion-proof type for flammable and explosive working conditions, and customized oil-free sealed type for food/new energy industry;

Installation and adaptation: the equipment is small in size, has no foundation vibration, and does not need to make concrete foundation and soundproof room separately, so it is suitable for installation in a narrow space in the workshop.

summary

The application scenario of magnetic levitation blower focuses on the three major requirements of * * "energy saving, oil-free stability and stepless speed regulation" * *. From traditional municipal environmental protection and power metallurgy to emerging new energy and food light industry, all industrial processes that need medium and low pressure and medium and high flow blowing/pressurization are suitable scenarios, and with the promotion of industrial energy-saving transformation and double-carbon target, its application scope continues to fine chemicals and semiconductors.