Drying heat recovery - Industrial purification heat recovery

Heat pump drying heat recovery energy saving system

With the further development of China's economy, the use of green energy will be more and more extensive. Heat pump dehumidification dryers with plate type obvious heat recovery function have developed rapidly in recent years and have been widely used in the Yangtze River basin, southwest China and South China.

The unit using the inverse cano principle at the same time, combined with efficient heat recovery technology, in the whole drying dehumidifying process, through the duct the wet air within the chamber connected to the host using the sensible heat plate heat collector recovery of the sensible heat and latent heat of hot and humid air, thermal recycling, greatly improve the performance of the host, improve the drying speed and material quality. The waste heat can not only improve the performance of the unit, but also reduce the thermal pollution to the environment and alleviate the urban heat island effect.

The heat pump drying heat recovery system is not only used in the mud drying system, but also widely used in many other drying industries. It has the characteristics of good drying quality and high degree of automation, and is the best choice product for energy saving, green and environmental protection in the modern drying industry.

Heat pump dryers with and without heat recovery working principle

When the heat pump dryer dries the air, the air forms a closed cycle between the drying chamber and the equipment. The evaporator's heat absorption function is used to cool and dehumidify the hot and humid air, and the condenser's heat release function is used to heat the dry cold air, so as to achieve the effect of cycle dehumidification and drying.

The main difference between heat recovery function and heat pump dryers without heat recovery function lies in the different air circulation modes. The former is equipped with plate type sensible heat exchanger, which plays the function of pre-cooling and preheating in the air circulation process, reducing the load of compressor operation and achieving the purpose of energy saving.

Heat pump drying heat recovery energy saving system(图1)

Heat pump drying system operation mode

Heat pump drying heat recovery energy saving system(图2)

Energy saving analysis of heat recovery

Taking a heat pump dryer as an example, the air temperature of drying is designed to be 65℃, the relative humidity is 30%, the circulating air temperature is 65℃, the temperature before passing through the evaporator is 65℃, and the temperature after evaporation cooling is 35℃. The condenser needs to heat the air of 35℃ to 65℃ before it can be used.

After matching with BXB500-400-3.5 heat exchanger, 35℃ return air absorbs heat from exhaust air after passing through plate heat exchanger, and the temperature rises to 46.6℃. The condenser only needs to heat the air from 46.6℃ to 65℃ to meet the use requirements, greatly reducing the load of evaporator and condenser, thus reducing the power of the whole machine, achieving the purpose of energy saving.

Energy saving analysis of heat recovery

Heat pump drying heat recovery energy saving system(图3)

Selection and economic calculation

We are very glad to show you the calculation and selection software of plate heat exchanger jointly developed by us and Tsinghua University. If you need, please contact us!

Design of Drying, Dehumidification and Heat Recovery System

With the rapid development of manufacturing industry, many products require drying and dehumidification treatment during the production process. These processes not only require efficient moisture removal, but also require maintaining the characteristics and quality of the material. Traditional drying and dehumidification methods often consume high energy and may have adverse effects on the environment, such as emitting greenhouse gases and other pollutants.

By adopting efficient heat recovery technology, waste heat can be maximally recovered and reused to reduce energy consumption. Heat recovery technology has been widely applied in multiple industries to improve energy efficiency and reduce operating costs. But in the field of drying and dehumidification, the potential of this technology has not been fully tapped. We customize and develop a heat recovery system that suits your specific production needs and on-site conditions. We carefully design the system layout for you to ensure minimal loss of thermal energy during conversion and transmission. Welcome to inquire via email.

Ventilation heat exchanger for vegetable low-temperature processing area and supermarket sorting area

In the low-temperature vegetable processing area, the main function of the ventilation heat exchanger is to ensure that the temperature of the processing environment is suitable to maintain the freshness and quality of the vegetables. Ventilation heat exchangers use efficient heat exchange technology to dissipate indoor heat while introducing external cold air or cooled air for effective temperature control.
In addition, the ventilation heat exchanger in the low-temperature vegetable processing area also needs to consider humidity control, as excessive humidity may cause vegetable rot. Therefore, some ventilation heat exchangers are also equipped with humidity regulation functions to ensure that the humidity in the processing environment remains within an appropriate range.
The sorting area of a supermarket or shopping mall is responsible for sorting, packaging, and delivering goods. The main function of the ventilation heat exchanger in this area is to provide fresh air and remove indoor turbid air and excess heat.
The ventilation heat exchanger in the sorting area of supermarkets usually has a large air volume and efficient heat exchange performance to meet the needs of large spaces and high pedestrian flow. At the same time, they also need to have the characteristics of easy maintenance and cleaning to ensure long-term stable operation.
Whether it is a low-temperature vegetable processing area or a supermarket sorting area, ventilation heat exchangers are indispensable and important equipment. They provide a comfortable and healthy working environment for these areas through efficient air conditioning and temperature control, which helps improve production efficiency and product quality.
Our cross countercurrent plate heat exchanger is made of high-quality hydrophilic aluminum foil, epoxy resin aluminum foil, stainless steel, polycarbonate and other materials. The air flows partially in cross flow and partially in relative flow to avoid the transmission of odors and moisture. Applied to energy recovery in civil and commercial ventilation systems, as well as industrial ventilation systems. Fast heat conduction, no secondary pollution, good heat transfer effect.

Vegetable, tea, bean drying room, dehumidification and moisture removal air heat exchanger

Efficient dehumidification and dehumidification systems are required during the drying process of agricultural products such as vegetables, tea, and beans to ensure the quality and efficiency of the drying process. The gas heat exchanger plays a crucial role in this process. The following is a detailed introduction to the dehumidification and dehumidification system of vegetable, tea, and bean drying rooms.

Dehumidification process:
The humid and hot air in the drying room is drawn out by the exhaust fan and exchanges heat with the incoming dry air when passing through the air air heat exchanger.
After passing through the heat exchanger, the temperature of the discharged humid and hot air decreases, and the water vapor condenses into liquid water and is discharged.
The incoming dry air is preheated by a heat exchanger and enters the drying room, improving the drying efficiency.

Application scenarios
Vegetable drying: such as chili peppers, carrots, cabbage, etc., by controlling temperature and humidity, the color and nutrition of the dried vegetables are not destroyed.
Tea drying: For green tea, black tea, oolong tea, etc., the aroma and quality of the tea are maintained through appropriate temperature and humidity control.
Legumes drying: such as soybeans, mung beans, red beans, etc., are dried evenly with hot air to ensure the dryness and storage quality of the beans.

The application of gas air heat exchangers in vegetable, tea, and bean drying rooms has improved the energy efficiency and product quality of the drying process through efficient dehumidification and dehumidification functions. Reasonable design and use can significantly reduce energy consumption and operating costs, while being environmentally friendly, making it an indispensable part of modern drying technology.

Drying waste heat recovery

The heat pump drying heat recovery system can be applied to the drying of food, medicinal materials, tobacco, wood, and sludge. It has the characteristics of good drying quality and high degree of automation, and is the best and preferred product for energy-saving, green, and environmental protection in the modern drying industry.

The unit utilizes the reverse Carnot principle and efficient heat recovery technology. Throughout the entire drying and dehumidification process, the humid air in the drying room is connected to the main unit through a return air duct. The sensible and latent heat of the humid air is recovered using a sensible heat plate heat recovery device for heat recovery and reuse, greatly improving the performance of the main unit, drying speed, and material quality.

Recovery and utilization of waste heat from kiln drying: stainless steel welded plate air to air heat exchanger

Recovery and utilization of waste heat from kiln drying

Kiln drying waste heat recovery and utilization refers to the recovery and utilization of waste heat from the exhaust gas emitted by the kiln for drying materials, thereby improving energy utilization efficiency and reducing production costs.
Technical principle of waste heat recovery and utilization in kiln drying
The technical principle of waste heat recovery and utilization in kiln drying is to use a heat exchanger to transfer the heat from the kiln exhaust gas to fresh air, thereby heating the fresh air. The heated fresh air is used to dry materials, which can improve drying efficiency and reduce energy consumption.
Application of Waste Heat Recovery and Utilization in Kiln Drying
The technology of waste heat recovery and utilization in kiln drying can be applied to various kiln drying systems, including:
Brick and tile kiln drying
Ceramic kiln drying
Drying of building materials kilns
Chemical kiln drying
Food drying
Drying of agricultural and sideline products
The advantages of recycling and utilizing waste heat from kiln drying
The recovery and utilization of waste heat from kiln drying have the following advantages:
Energy saving: It can effectively utilize the waste heat in the kiln exhaust gas, reduce energy consumption, and lower production costs.
Environmental protection: It can reduce exhaust emissions and reduce environmental pollution.
Improving drying efficiency: can improve drying efficiency, shorten drying time, and improve product quality.
Common methods for recovering and utilizing waste heat from kiln drying
The common methods for recovering and utilizing waste heat from kiln drying include:
Waste heat recovery from flue gas: Using a heat exchanger to transfer the heat in the flue gas to fresh air for drying materials.
Kiln body waste heat recovery: Using the waste heat of the kiln body to heat fresh air for drying materials.
Waste heat drying kiln: Directly use kiln exhaust gas to dry materials.
Notes on the recovery and utilization of waste heat from kiln drying
When recovering and utilizing waste heat from kiln drying, the following precautions should be taken:
Choose a suitable waste heat recovery device: The appropriate waste heat recovery device should be selected based on factors such as kiln type, drying materials, and residual heat.
Ensure heat exchange efficiency: The heat exchange device should be regularly inspected and maintained to ensure heat exchange efficiency.
Prevent corrosion: Measures should be taken to prevent corrosion of the waste heat recovery device.
With the continuous improvement of energy conservation and emission reduction requirements, the technology of waste heat recovery and utilization in kiln drying will be increasingly widely applied.

Heat recovery heat exchanger for coating waste heat in the production of heat shrink film

In the production process of heat shrink film, the coating process usually generates a large amount of waste heat, which can be effectively utilized through waste heat recovery heat exchangers to improve energy efficiency and reduce production costs. The following is the general working principle and advantages of a waste heat recovery heat exchanger during the coating process of heat shrink film production:

Working principle

In the production of heat shrink film, the coating process is often accompanied by the generation of high-temperature exhaust gas, which carries a large amount of heat energy. The working principle of a waste heat recovery heat exchanger is to utilize the heat in these high-temperature exhaust gases and transfer it to fresh air or other media through heat exchange, thereby achieving energy reuse.
The specific work steps are as follows:

Waste gas collection: The generated high-temperature waste gas is collected through pipelines or ventilation systems and transported to the waste heat recovery heat exchanger.
Heat exchange process: Within the waste heat recovery heat exchanger, high-temperature exhaust gas exchanges heat with fresh air or other fluids. Thermal energy is transferred from the exhaust gas to a new medium, causing it to heat up.
Energy reuse: After heat exchange, the heat in the exhaust gas is transferred to a new medium, which can be used to heat the parts that need to be heated in the production process, such as drying equipment or preheating equipment.

Advantages

Energy conservation and emission reduction: The use of waste heat recovery heat exchangers can effectively recover thermal energy from exhaust gas, reduce energy consumption, and reduce emissions such as carbon dioxide, meeting the requirements of energy conservation and emission reduction.
Reduce production costs: By recycling and utilizing the heat energy in exhaust gas, the dependence on external energy can be reduced, production costs can be lowered, and production efficiency can be improved.
Environmental protection and sustainable development: It can minimize the waste of heat energy and minimize its impact on the environment, in line with the concept of sustainable development.
Improving the working environment: Reducing exhaust emissions and heat loss can help improve the working environment on the production site, enhance employee comfort and safety.
Simple and stable operation: The operation of the waste heat recovery heat exchanger is relatively simple and stable, without excessive manual intervention, and can operate continuously and stably.
By applying waste heat recovery heat exchangers, the waste heat generated during the coating process of heat shrink film production can be effectively utilized, bringing many economic and environmental benefits. However, specific applications and designs need to be comprehensively considered and optimized based on production processes, waste heat characteristics, and actual needs to achieve the best energy recovery effect.

Waste heat recovery from shaping machine exhaust gas

The waste heat recovery of the molding machine exhaust gas is an energy-saving technology that improves energy efficiency by capturing and reusing the heat in the exhaust gas emitted by the molding machine. This process typically includes the following steps:

Exhaust gas capture: The shaping machine generates a large amount of exhaust gas during operation, including high-temperature hot air. The exhaust gas capture system is used to effectively collect these exhaust gases.
Heat exchanger: The exhaust gas is introduced into the heat exchanger, which is a device used to transfer heat. Usually, the heat energy in the exhaust gas is transferred to other media flowing through a heat exchanger, such as water or heat transfer oil.
Energy transfer: The heat energy in the heat exchanger is transferred to the passing medium, thereby heating the medium.
Thermal energy reuse: The heated medium can be used for different applications, such as heating buildings, heating process water, providing hot water or steam, or for other industrial heating needs.
Energy conservation and efficiency improvement: Through waste heat recovery, the energy utilization efficiency of the molding machine is improved, reducing energy costs and reducing the impact on the environment.
The performance of the waste heat recovery system depends on the scale of the molding machine, working temperature, exhaust gas composition emitted, and the design and control of the recovery equipment. These systems can effectively reduce exhaust emissions, improve resource utilization efficiency, and reduce energy costs, making them widely used in many industrial applications.

Application of Plate Heat Exchanger in Lithium Battery Wet Diaphragm Production Line

In the wet separator production line of lithium batteries, plate heat exchangers can be used to control and regulate the temperature in the process. It is a heat transfer device consisting of a series of parallel arranged metal plates and sealing gaskets. Through the fluid circulation between plates, heat can be transferred between fluids to achieve temperature regulation and heat recovery. Epoxy heat exchangers are suitable for processes with corrosive media. It is usually made of epoxy resin material and has good corrosion resistance and thermal conductivity. In the wet separator production line of lithium batteries, epoxy heat exchangers can be used for heat transfer and temperature control in the process.
The specific design and application of these devices will vary depending on the scale of the production line, process requirements, and specific application requirements. The wet separator production line for lithium batteries involves multiple process steps, including solution preparation, separator coating, drying, etc. In these processes, plate heat exchangers and epoxy heat exchangers can play an important role in regulating and recovering heat energy, improving production efficiency and energy utilization efficiency.
The selection and design of specific plate heat exchangers and epoxy heat exchangers should consider factors such as process requirements, medium characteristics, temperature control, and rely on the design and suggestions of engineers and professional manufacturers. If necessary, please consult relevant process equipment suppliers or professional engineers for more accurate and detailed technical support.

Function analysis of heat exchanger core

The heat exchanger core is the major part of air to air ventilation system. When the air is forced to pass through the heat exchanger core from two different air channels, the energy and humidity are transferee! by the plates, so as to save the energy. Outdoor air and exhaust air is separated by thermal conduction plate, avoid cross-contamination,make sure dean outdoor air Base on different air channel they can be divided into cross flow9 counter flow and cross&counter flow; base on material can be divided into sensible and enthalpy heat exchanger core.

heat exchanger core have compact structure, no running parts, strong reliability and long service life.

Industrial purification heat recovery

Category Archive Drying heat recovery