Xinhou manufactures spray nozzles and spray systems that are utilized in various industries such as chemical processing, petrochemical plants, cement plants, and more. These systems are designed to enhance gas cooling and conditioning processes. Additionally, Xinhou offers air quality and pollution control systems that provide customized solutions by integrating specially designed nozzles and lances to optimize your operations.
In numerous procedures, the temperature of gas is increased to levels that could potentially harm equipment further down the line. The gas can be produced through direct combustion, such as in the case of flue gas, or through secondary heating. The most efficient and rapid method of cooling a hot gas is by evaporating a liquid that is injected into it. Converting the injected liquid into a gas requires a significant amount of energy compared to cooling through direct contact.
For instance, raising the temperature of water from 32 °F to 212 °F (0 °C to 100 °C) necessitates approximately 180 BTU per pound (418 kJ per kilogram). However, transforming that water from a liquid state at 212 °F (100 °C) to steam at the same temperature requires around 1000 BTU per pound (2320 kJ per kilogram), which is more than five times the amount of energy. The energy required to convert the liquid into gas is extracted from the hot gas, resulting in a decrease in its temperature.
Evaporative gas cooling involves the introduction of a water mist into a high-temperature gas, often flue gas produced during combustion. The water mist undergoes rapid evaporation, causing a cooling effect as the energy from the gas transforms the liquid water into gas. By breaking down a volume of water into smaller droplets, the surface area exposed to the gas increases, leading to a higher rate of evaporation. This evaporation rate is crucial as the gas needs to reach its desired temperature before a specific point downstream. The rate of evaporation depends on factors such as droplet size, temperature difference, and partial pressure, among other variables.
