Heat pipe waste heat recovery device is a heat exchange device made by using the high-efficiency heat transfer characteristics and environmental adaptability of heat pipes, which is mainly used in the field of industrial energy saving and can widely recover waste heat sources existing in gaseous, liquid and solid media. According to the state of hot fluid and cold fluid, heat pipe waste heat recoverers can be divided into gas-gas type, gas-steam type, gas-liquid type, liquid-liquid type and liquid-gas type. According to the structural form of recycling machine, it can be divided into integral type, separated type and combined type.
2. Baffle heat exchanger
Heat exchanger is a common equipment in chemical industry, petroleum, electric power, food and many other industrial sectors, and plays an important role in production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers. , and more widely used. There are many kinds of heat exchangers, but according to the principle and mode of heat exchange between hot and cold fluids, they can be basically divided into three categories: partition wall type, hybrid type and regenerative type. Among the three types of heat exchangers, the baffle heat exchanger is the most widely used. Common baffle heat exchangers include cooling tower (or cold water tower), gas washing tower (or washing tower), jet heat exchanger, mixed condenser and so on.
3. AC heat exchanger
Regenerative heat exchanger is a kind of device for regenerative heat exchange, which is generally used in occasions where the requirements for medium mixing are not high. The heat exchanger is filled with solid fillers to store heat. Firebricks are generally used to build fire grids (sometimes corrugated metal strips are used).
Regenerative heat transfer is carried out in two stages. In the first stage, hot gas passes through the fire grate and transfers heat to the fire grate for storage. In the second stage, the cold gas passes through the fire grate and receives the heat stored in the fire grate to be heated. These two stages alternate. Usually, two heat accumulators are used alternately, that is, hot air enters one and cold air enters the other. It is often used in metallurgical industry, such as regenerator of steelmaking open hearth. It is also used in chemical industry, such as air preheater or combustion chamber of gas furnace and regenerative cracking furnace of artificial stone oil plant.
4, energy-saving ceramic heat exchanger
Ceramic heat exchanger is a new type of heat exchanger, which replaces the traditional metal heat exchanger in high temperature or corrosive environment. Using its special material-SiC, the original cold air in the kiln is turned into hot air to achieve the purpose of waste heat recovery. Because it can be used in concentrated sulfuric acid, hydrochloric acid and alkaline gases and liquids for a long time. Oxidation resistance, thermal shock resistance, high high temperature strength, good oxidation resistance and long service life. Hot air industrial kiln. The exchanged hot air is sent to the kiln as combustion-supporting air to form mixed gas for combustion, which can save energy by 25%-45% or even more.
5. Jet mixing heater
Jet mixing heater is the application of jet technology in the field of heat transfer. Jet mixing heater is a device that produces hot water by direct mixing of steam and water. Jet mixing heater has the advantages of high heat transfer efficiency, low noise (below 65dB), small volume, simple installation, reliable operation and low investment. The waste heat of power plant, paper mill and chemical plant is recovered by jet hybrid heater, and the circulating water is heated for heating.
Jet hybrid heater is especially suitable for small and medium-sized heating systems with heating area less than 60 thousand square meters, replacing the function of surface heater. According to different heat sources, the temperature of heated water can be increased by 20℃ ~ 50℃. If the temperature rise of water is required to be large, two-stage jet mixing heaters can also be arranged in series.