Industrial purification heat recovery

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Yearly Archive 2023-03-10

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Wind Generator Air to Air Indirect Cooling System

Wind power system background

Wind power is a kind of clean energy, with the characteristics of renewable, pollution-free, large energy and broad prospects. The development of clean energy is the strategic choice of all countries in the world.

However, if the air is directly fed into the generator cabin for cooling, the dust and corrosive gas will be brought into the cabin (Especially wind turbines installed offshore).

Indirect cooling system solution

The indirect cooling method can make the air from inside and outside perform indirect heat exchange to achieve the effect of cooling the wind generator cabin without bringing dust and corrosive gases from outside into the cabin.

The main component of the indirect cooling system is the BXB plate heat exchanger. In the BXB plate heat exchanger, two channels are separated by aluminum foil. The air in the cabin is closed circulation, and the outside air is open circulation. The two airs are doing heat exchange. The air in the cabin transfers heat to the outside air, which reduces the temperature in the wind generator. In addition, the air inside and outside the cabin will not be mixed due to the isolation of aluminum foil, which prevents dust and corrosive gases outside the cabin from being brought into the cabin.

reuse system

Industrial thermal emission heat recovery & reuse system

　　Industrial thermal emission heat recovery&reuse system
　　There are many drying equipment is often used to raise the air(fresh air)to a certain temperature and process the materials.Such as,food,chemical,pharmaceutical,electronics,spraying,printing,paper,chemical fiber and other industries.However,the used air is discharged as exhaust gas(exhaust air),and the exhaust gas is usually high in temperature and directly discharged into the atmosphere,which will cause a lot of energy waste.
　　Drying case
　　For example,assuming a place with an annual average temperature of 10°C,a drying system air volume of 10000m3/h,and a drying process temperature of 80°C,it is necessary to provide about 235kW of heat to the drying box by means of electric or steam heating.The process is as follows,if the exhaust gas is directly discharged,the 235 kW of heat heated by electric or steam is will discharged into atmosphere,resulting in a waste of energy.
　　Schematic diagram of fresh air ventilation equipment with heat recovery
　　In the exhaust gas emission system,adding a heat exchange box that can realize the waste heat recovery.
　　The main component of the heat exchange box is the BXB plate heat exchanger.The plate heat exchanger is mainly made of aluminum foil(or stainless steel foil).When there is a temperature difference between two airflows that are isolated by aluminum foil and flow in opposite directions,heat transfer will occur to realize energy recovery.Through the BXB air sensible heat exchanger,the conversion in the exhaust air can be used to preheat the fresh air.As the result,it will achieve the purpose of energy saving.

Purify air conditioning fresh air system

Medical treatment, biopharmaceutical and high-end electronic intelligence industries have emerged as the country's large-scale industrial strategy, and these industries cannot be separated from the application of purification systems. Because of the particularity of the purification system, the introduction of fresh air and the discharge of some indoor air are realized by power, so the demand for energy is fixed. In the system without new and exhaust energy recovery devices, fresh air will consume a lot of energy, while the energy in exhaust air will be wasted. If the energy in exhaust air can be recovered and the fresh air can be pre-cooled or preheated, the waste of resources can be reduced to the maximum extent. The system mode of strong delivery and strong exhaust is more conducive to the arrangement and utilization of new and exhaust energy recovery.

In the air conditioning system design of major hospitals, treatment centers and animal laboratories, in order to avoid cross pollution, the distance between new fans and exhaust fans is usually relatively far. Our company can provide liquid circulating energy recovery scheme. This energy recovery method can effectively avoid cross-contamination of fresh and exhaust air, effectively recover the cold heat in exhaust air through liquid circulation, and release the recovered energy into fresh air, so as to achieve the purpose of reducing energy consumption of fresh air. This recovery system can drag one or more modes.

Wind Generator Air to Air Indirect Cooling System

Wind power system background

Wind power is a kind of clean energy, with the characteristics of renewable, pollution-free, large energy and broad prospects. The development of clean energy is the strategic choice of all countries in the world.

However, if the air is directly fed into the generator cabin for cooling, the dust and corrosive gas will be brought into the cabin (Especially wind turbines installed offshore).

Indirect cooling system solution

The indirect cooling method can make the air from inside and outside perform indirect heat exchange to achieve the effect of cooling the wind generator cabin without bringing dust and corrosive gases from outside into the cabin.

The main component of the indirect cooling system is the BXB plate heat exchanger. In the BXB plate heat exchanger, two channels are separated by aluminum foil. The air in the cabin is closed circulation, and the outside air is open circulation. The two airs are doing heat exchange. The air in the cabin transfers heat to the outside air, which reduces the temperature in the wind generator. In addition, the air inside and outside the cabin will not be mixed due to the isolation of aluminum foil, which prevents dust and corrosive gases outside the cabin from being brought into the cabin.

Cooling effect analysis

Taking a 2MW unit as an example, the motor's heat generation is 70kW, The circulating air volume in the engine room is 7000m3/h and the temperature is 85℃. The outside circulating air volume is 14000m3/h and the temperature is 40℃. Through the BXB1000-1000 plate heat exchanger, the air temperature in the cabin can be reduced to 47℃ and the heat dissipation capacity can reach 72kW. The relevant parameters are as follows:

Wind Generator Air to Air Indirect Cooling System

Water vapor removal of industrial white smoke and smoke whitening

Chimneys in chemical and power industries emit white smoke after desulfurization and other processes, which contains a large amount of water vapor. During the process of discharging to the atmosphere, the water vapor in the flue gas condenses into liquid, and the light transmittance of the flue gas decreases, resulting in white smoke emission from the chimney. If these moisture cannot diffuse in time, it will form acid rain and gypsum rain, which is one of the inducements of haze weather.
Smoke whitening is to remove condensate in advance to prevent discharge to the atmosphere, thus reducing the pollution of white smoke to the environment.
Ultra-thin heat transfer core is used inside the efficient and fast flue gas whitening machine, which uses ambient temperature air without additional energy consumption, and the heat transfer process is pollution-free. The equipment has compact design layout, flexible installation and simple operation, which can efficiently and quickly solve the white clean water mist generated in the operation and production of natural gas boilers, drying equipment, food plants, etc. It is mainly used in the de-whiting of desulfurization flue gas in coal-fired boiler flue gas, gas-fired boiler flue gas, power plant, metallurgy and other industries.
If you have any demand, please contact us for program customization, Tel: 15311252137 (Manager Yang)

Principle and method process of low-temperature circulating water condensation whitening technology

After the flue gas enters the spray condensing tower, it directly contacts with the low-temperature intermediate water in it to reduce the temperature to below the dew point. The cooled flue gas returns to the chimney for direct discharge, and the heated spray water enters the water storage tank inside the tower. After multi-layer sedimentation, the settled clean water overflows to the water storage tank outside the tower. Under the action of the circulating pump, it enters the heat pump refrigeration unit for cooling treatment, and then returns to the condensing tower through the main circulating pump for cooling spray, completing a complete cycle.
The water vapor in the flue gas continuously condenses with the flue gas temperature decreasing. The condensed water actually comes from the water evaporated from the spray slurry of the desulfurization tower. This part of condensed water enters the make-up water system of the desulfurization tower after sedimentation in the reservoir, and returns to the desulfurization tower as make-up water, which can effectively relieve the make-up water pressure caused by the wet desulfurization process.
In the spray condensation tower, because the flue gas and the low-temperature spray water are in direct contact with each other to cool down, the dust concentration in the flue gas can also be effectively reduced and the pollutant emission in the final smoke can be reduced through the washing effect of the spray water on the flue gas.
The above condensation cooling technology can reduce the temperature of wet flue gas from 50 ℃~60 ℃ at the outlet of the desulfurization tower to below 30 ℃, and recover the condensate water in the flue gas as make-up water for the desulfurization tower to reduce the water loss of wet desulfurization; In addition, the flue gas is washed again and the dust content in the flue gas is significantly reduced, so as to achieve the multiple purposes of energy saving, water saving and emission reduction at the same time.

Air plate heat exchanger for air waste heat recovery

The air-gas plate heat exchanger for air waste heat recovery is made of seawater corrosion-resistant hydrophilic aluminum plate, epoxy resin aluminum plate or stainless steel foil. The heat transfer surface of the heat exchanger is subject to enhanced heat transfer stamping forming treatment. The heat exchanger adopts enhanced stamping undercut technology, which has higher strength, better sealing performance and less than 1% air leakage rate; The air passage is supported by a conductor convex cylinder, and the capacity to withstand the new exhaust pressure difference is 2500 Pa; The normal use temperature of ordinary aluminum foil is not higher than 100 ℃, the temperature resistance of special sealing material can reach 200 ℃, and the temperature resistance of stainless steel material can reach 350 ℃; It can be cleaned directly with tap water or neutral detergent, which is convenient to use and easy to maintain; Provide different plate spacing (2.0mm-10.0mm) and any combination length.
The products are widely used in commercial central air conditioners, industrial purification air conditioners, healthy and green residences, data center heat exchange, 5G base stations, medical purification, wind power heat exchange, large-scale breeding energy-saving ventilation, new energy vehicles, printing machines, coating machines, sizing machines, charging pile heat exchange, printing, food, tobacco, sludge drying and other fields,

Efficient and fast flue gas white elimination box

Efficient and fast flue gas white elimination box, physical way to eliminate industrial white smoke, industrial waste heat recovery
The waste heat and smoke exhaust of boilers and the chimneys of chemical and power industries emit white smoke after desulfurization and other processes, which contains a large amount of low-heat water vapor. During the discharge process, the water vapor in the flue gas condenses into liquid, and the light transmittance of the flue gas drops, resulting in white smoke. If these moisture cannot diffuse in time, it will form acid rain and gypsum rain, which is one of the inducements of haze weather.
Ultra thin heat transfer core is used in the air efficient and fast flue gas whitening machine, which uses outdoor ambient temperature air without additional energy consumption, and the heat transfer process is pollution-free. The equipment has compact design layout, flexible installation and simple operation, which can efficiently and quickly solve the white clean water mist generated in the operation and production of natural gas boilers, drying equipment, food plants, etc. It is mainly used for desulfurization and flue gas whitening in coal-fired and gas-fired boilers, power plants, metallurgy and other industries.
It is widely used in the tail gas utilization of dryers, drying of vegetables, tobacco leaves, medicinal materials, noodles, seafood and other foods, and drying of clothes and sludge. The air energy recovery scheme of printing machine and coating machine is installed in the drying exhaust system. During the exhaust process, the exhaust gas and fresh air pass through the heat exchange core, and the heat of the exhaust gas is used to preheat the fresh air to improve the inlet temperature, so as to achieve the purpose of air waste heat recovery.

Historical source of fresh air system

As early as 1906, when studying air and human health, Mr. Al, an indoor environment scientist at the British Institute of Natural Environment, found that the index of indoor air was very different from the content of air components in the outdoor natural environment. This change in indoor and outdoor air quality had a great impact on human health. He took the lead in proposing that indoor and outdoor air can reach a relatively close degree through effective ventilation, and that air is the first element of human health. After years of research, he invented the method of forced mechanical ventilation to realize the replacement of indoor and outdoor air, and named it fresh air system.

How to ensure proper temperature in mushroom greenhouse?

Mushrooms belong to fungi. Temperature control is very important in the mushroom seed production stage, especially in the mushroom production stage. Good temperature control is conducive to the quality of mushrooms. So how to ensure the appropriate temperature of mushroom production in the mushroom seed production greenhouse?
The actual seasonal ambient temperature obviously does not meet the requirements of mass planting and production, which requires constant temperature and humidity water chiller equipment for temperature cooling, so as to ensure the appropriate temperature for mushroom production, make the mycelium develop healthily and improve the quality of mushrooms. It is cultivated out of season through vegetable greenhouse.
So how does the constant temperature and humidity chiller for mushroom cultivation work? It is divided into the following links.

  1. Dehumidification link:
    According to the requirements of mushroom process temperature, when the ambient humidity of the mushroom greenhouse is higher than the set humidity, the dehumidification system is realized by cooling;
  2. Cooling link:
    When the temperature sensor detects that the temperature of the mushroom greenhouse is higher than the set temperature, the cooling system starts to work. The indoor unit becomes the evaporator and the outdoor unit becomes the condenser through the conversion of the steering valve.
  3. Heating link:
    The indoor unit becomes the evaporator, and the outdoor unit becomes the condenser to start heating.
  4. Humidification:
    It is sent to the mushroom greenhouse through the fan to realize the function of humidification.
    The constant temperature and humidity chiller can cool, heat, adjust humidity, ventilate the greenhouse, and automatically adjust the temperature. It is a sharp tool for mushroom and other fungus cultivation, with the following characteristics.
    At the same time, the constant temperature and humidity unit is equipped with multi-function operation panel, control system fuse, compressor switch button, water pump switch button, electronic temperature controller, various safety protection fault lights, unit start operation indicator light, which is simple to operate and convenient to use. As the heart of the industrial chiller, the high-quality compressor is equipped with a built-in safety protection system, which is low in noise, energy-saving and durable. It has the function of low temperature protection, especially in the cold winter, when the temperature is minus 7 degrees, because the unit is equipped with the function of preventing freezing at the cold water side, when the unit detects that the return water temperature at the mushroom shed side is too low, the host will automatically start to heat the water temperature to a safe temperature.
    Constant temperature and humidity units have been widely used in breeding, purification workshops, factories, scientific research, artificial ice rinks and a variety of large buildings or industrial plant equipment. With its advantages of high energy efficiency and good effect, they have been favored by customers at home and abroad.

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