Utilization of steam condensate
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To reduce the condensation of substances such as tar and naphthalene in the return gas, a gas preheater is generally installed on the return gas pipeline to heat the condensed water produced by steam and thus prevent waste. If this condensed water is collected and used to refill the water seal at the rising pipe, what volume of water storage tank is required?
Calculating the required volume of the water collection tank involves determining specific parameters such as the amount of steam condensate generated, the water replenishment volume for the rising pipe water seal, and the time interval. Without specific figures, it is not possible to determine the size of the water collection tank directly. Usually, a certain margin is left in the design to ensure the proper operation of the system. .
This depends on whether there is enough space where the water tank is placed; the tank can be large or small. The pump does not need to be very large; controlling its start and stop with a level gauge is sufficient. This water is demineralized water; if conditions permit, it is more cost-effective to send it to the water treatment process.
Normally, the steam condensate from the gas preheater is wasted and discharged. The rising pipe water seal tank also has its own balance water tank for supply. The steam condensate from this preheater section is collected, not to address the shortage of water for the water seal in the rising pipe, but to save water and prevent the waste of steam condensate.
All the condensate generated within the device is collected and reused, which not only saves raw water but also reduces the processing load on the equipment used to treat it.
It is possible to collect the condensate, flash it, and then use the resulting secondary steam – after pressurizing it with a steam compressor – to feed back into the process equipment or to be utilized in the steam distribution network.
Theoretically, it is possible. In fact, the amount of steam is not significant, so there is no value in recovering it; in other words, doing so would result in losses.
For large quantities, recycling is highly beneficial; for small quantities, the cost-effectiveness is generally low. However, even with small amounts, many factories are looking for ways to make use of them or to find an appropriate method for dealing with them.