Applicable occasions: Steam is the main energy source for industrial enterprises, with high calorific value, large consumption, and high heat loss. Currently, many enterprises have the phenomenon of high energy consumption but low energy abandonment (direct discharge of condensate water). Therefore, it is necessary to carry out energy-saving renovation of centralized heating in buildings, which can help improve efficiency.

Project Introduction

Steam is the main energy source for industrial enterprises, characterized by high calorific value, large consumption, and high heat loss. Currently, many enterprises have the phenomenon of high energy but low usage, and low energy abandonment (direct discharge of condensed water). Due to the high steam pressure in the pipeline network, end users use pressure reducing valves to reduce the pressure before use, which leads to heat energy loss. At the same time, due to the poor steam water separation effect of the drain valve, low-pressure steam is also discharged while discharging condensed water, causing steam heat energy loss. Many enterprises directly discharge condensed water (generally at a temperature of 70-95 ℃), resulting in more serious heat energy loss. To this end, the key technology for steam energy conservation is cascade utilization, which implements high-energy high use, low-energy low use, and rational use of the entire process heat source of steam to improve the efficiency of steam thermal energy utilization.

processing method

The condensed water heat exchange and recovery technology is to exchange the heat energy of condensed water into industrial hot water or water for employees to bathe or use in daily life through a condensed water heat exchanger, reducing the discharge temperature of condensed water from above 90 ℃ to below 40 ℃. It has good prospects for energy-saving applications.

The condensed water discharged from steam or returned to the thermal power plant is heat exchanged with low-temperature hot water (tap water) through a condensed water heat exchanger, transferring the heat value of the condensed water to the low-temperature hot water, and transporting the high-temperature hot water obtained from the heat energy to an insulated water tank for use, thereby reducing the amount of steam to hot water conversion.

1. Fully utilizing thermal energy, realizing the cascade utilization of steam energy, and reducing the amount of steam converted into hot water;
2. The system conversion efficiency is high, reaching over 90%, and the drainage temperature can be reduced to below 50 ℃.
3. Reduced thermal pollution and cooling energy consumption.
4. The recoverable heat energy is 3-10% or more of the calorific value of steam usage.