4 - 2024 - Industrial purification heat recovery

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.

How to improve the thermal energy quality of waste heat recovery heat pumps?

The waste heat recovery heat pump utilizes a compressor to do work, elevating low-temperature heat energy to high-temperature heat energy, thereby improving the quality of heat energy. Specifically, there are two main ways for waste heat recovery heat pumps to improve thermal energy quality:

Increase the temperature of thermal energy
The waste heat recovery heat pump can increase the low-temperature waste heat (such as 60 ℃) to high-temperature thermal energy (such as 90 ℃), meeting the application needs of higher temperatures. For example, a waste heat recovery heat pump can recover and utilize the waste heat from industrial waste gas for heating or hot water preparation.
Improve the utilization rate of thermal energy
The waste heat recovery heat pump can extract the available heat from low-temperature waste heat and transfer it to high-temperature heat energy, improving the utilization rate of heat energy. For example, waste heat recovery heat pumps can recycle the waste heat from data centers for cooling or heating purposes.
The advantages of waste heat recovery heat pumps in improving thermal energy quality:
Energy saving: Waste heat recovery heat pumps can utilize waste low-temperature heat energy, reduce the use of fossil fuels, and improve energy efficiency.
Environmental protection: Waste heat recovery heat pumps can reduce greenhouse gas emissions, which is beneficial for environmental protection.
Economy: Waste heat recovery heat pumps can reduce production costs and improve economic benefits.
Application of waste heat recovery heat pumps:
Industry: Industrial waste heat recovery and industrial hot water recovery
Architecture: Building heating, building hot water preparation
Data Center: Data Center Waste Heat Recovery
With the continuous improvement of energy conservation and emission reduction requirements, the application of waste heat recovery heat pumps will become increasingly widespread.

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.

Hebei Yixue Refrigeration Technology Co., Ltd.

Hebei Yixue Refrigeration Technology Co., Ltd. is located at No. 13, Weixian Economic Development Zone, Zhangjiakou City, Hebei Province, with a registered capital of 50 million yuan. It is a modern service provider that integrates cold and hot technology research and development, cold chain logistics equipment manufacturing, cold chain warehousing, and smart logistics services. The company currently has 37 employees and a factory area of over 30000 square meters. Mr. Wei Runhua, the founder, has been engaged in the refrigeration industry for 37 years, dedicated to the research and manufacturing of refrigeration equipment.
About Us
The company has obtained ISO9001, ISO45001, ISO14001 and intellectual property system certifications, and its products have obtained EU CE certification. It currently has more than 20 invention patents, software works, and books and publications. It is a full industry chain company that integrates high-end equipment manufacturing, refrigeration technology research and development, and cold chain logistics services.
Since its strategic transformation in 2021, Yixue has established a city level industrial design center, a city level cold and hot technology center, and an innovation center. It has been rated as a national high-tech enterprise, a "specialized, refined, unique, and new" small and medium-sized enterprise, and an intellectual property advantage enterprise in Hebei Province.
The enterprise has won the Global Top 20 Food Loss Reduction Competition of the Food and Agriculture Organization of the United Nations (FAO) and has been shortlisted for the National Competition of the China Innovation and Entrepreneurship Competition (High end Equipment Manufacturing Field). It has been reported by 34 official media outlets, including People's Daily, Xinhua News, China Daily, Economic Daily, Hebei Daily, Zhangjiakou News, as well as government agencies such as Hebei Provincial Department of Commerce, Hebei Provincial Department of Science and Technology, and Hebei Provincial Federation of Overseas Chinese.

Where are aluminum alloy condensing heat exchangers used

Aluminum alloy condensing heat exchangers are mainly used in the following fields:

Gas wall mounted boiler: Aluminum alloy condensing heat exchanger is an important component of gas wall mounted boiler. It utilizes the heat generated by the condensation of water vapor in the exhaust gas generated by gas combustion to improve the thermal efficiency of gas wall mounted boiler.

Heat pump: Aluminum alloy condensing heat exchanger is an important component of heat pump, which utilizes the heat generated by refrigerant evaporation and condensation in the heat pump system for heating or cooling.

Industrial boiler: Aluminum alloy condensing heat exchanger is an important component of industrial boiler, which utilizes the heat generated by the condensation of water vapor in the high-temperature exhaust gas of industrial boiler to improve the thermal efficiency of industrial boiler.

Air source heat pump: Aluminum alloy condensing heat exchanger is an important component of air source heat pump, which utilizes the heat generated by the condensation of water vapor in the air for heating or cooling.

Water source heat pump: Aluminum alloy condensing heat exchanger is an important component of water source heat pump, which utilizes the heat generated by the condensation of water vapor in water for heating or cooling.

Aluminum alloy condensing heat exchangers have the following advantages:

High thermal efficiency: Aluminum alloys have high thermal conductivity, which can effectively improve heat exchange efficiency.

Good corrosion resistance: Aluminum alloy has good corrosion resistance and can resist corrosive media in gas wall mounted boilers, heat pumps, and other systems.

Lightweight: Aluminum alloy has a low density, which can reduce the weight of heat exchangers.

Therefore, aluminum alloy condensing heat exchangers have broad application prospects in the above-mentioned fields.

Industrial purification heat recovery

Monthly Archive 2024-04-12