Recycling device for exhaust steam discharged from deaerator

Abstract

The invention discloses a recycling device for exhaust steam discharged from a deaerator. By analyzing an exhaust steam discharge mechanism of a thermal type high-pressure deaerator and a working principle of a steam jet type steam turbine shaft seal heater, a conclusion that the technical scheme is feasible that the exhaust steam discharged from the high-pressure deaerator is directly introducedinto a steam turbine shaft seal leakage pipeline and enters the shaft seal heater together, steam in the exhaust steam is condensed and recycled, and other gases are discharged into the atmosphere through an exhaust pipeline of the shaft seal heater is obtained; the exhaust steam discharged from the high-pressure deaerator is directly introduced into a steam turbine shaft seal leakage delivery pipeline, the exhaust steam and the steam leaked by the steam turbine shaft seal leakage delivery pipeline enter shaft seal heater together, thermal energy and condensation water are cooled and recycled,the energy-saving technical scheme is feasible, after the technical transformation of a thermal power plant, the system is simple, the investment cost is less, energy and water are saved, the noise pollution of three exhaust steam discharge ports is eliminated, and the better economic, environmental and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of waste steam discharge, and the specific field is a recovery and utilization device for waste steam discharge of a deaerator. Background technique [0002] In the high-pressure deaerator, when the steam entering the thermal high-pressure deaerator heats the water to boiling, the partial pressure P of the water vapor is almost the full pressure on the water surface, while other gases (oxygen, nitrogen , carbon dioxide, etc.) will tend to zero, so the amount of other gases dissolved in water will tend to zero, and these gases will completely escape from the water and enter the space above the oxygen removal head. Because the deaerator must heat and deaerate the desalinated water that enters continuously, it must continuously discharge the oxygen and other gases that escape from the water surface. In addition to oxygen and other gases, there is steam on the top of the head, so whe...

AI Technical Summary

Problems solved by technology

Because the deaerator must heat and deaerate the desalinated water that enters continuously, it must continuously discharge the oxygen and other gases that escape from the water surface. In addition to oxygen and other gases, there is steam on the top of the head, so when the deaerator exhausts oxygen and other gases, it will also discharge part of the steam, resulting in the loss of soda water and heat energy, and at the same time, there will be noise pollution to the environment

Only steam from the waste steam discharged from the high-pressure deaerator can be recycled, and other gases cannot be recycled

At present, although many energy-saving companies have developed such equipment and thermal systems for waste steam recovery and utilization, they are all relatively cumbersome and costly to invest.

Images