Comprehensive recovery method and system of condensation water and dead steam

Abstract

The invention discloses a comprehensive recovery method and a system of condensation water and dead steam. The method comprises the following steps: (1) transmitting the condensation water discharged by steam-consuming equipment to a flash drum to be performed with flash evaporation to obtain flash steam, and transmitting the flash steam and the dead steam discharged by the steam-consuming equipment to be below the liquid level of the condensation water in a water collecting tank; (2) transmitting the residual condensation water after flash evaporation to water processing equipment to be treated, and discharging to the water collecting tank to feed water for a boiler; (3) transmitting the condensation water in the water collecting tank to the boiler; and (4) when steam pressure in the water collecting tank exceeds the warning value, transmitting the steam in the water collecting tank to the steam-consuming equipment through a main boiler steam pipe by an injection pump. The temperature of the condensation water is lowered after flash evaporation, and then the condensation water is processed by the water processing equipment to prevent high temperature from damaging the water processing equipment; and meanwhile, the flash steam is directly recovered to the water collecting tank so as to take away most parts of heat of the condensation water, thus avoiding heat loss to the utmost degree, and realizing energy and water saving.

Description

technical field [0001] The invention relates to a comprehensive recovery technology of condensed water and exhaust steam, in particular to a comprehensive recovery method and system for condensed water and exhaust steam. Background technique [0002] In the prior art, when there is no corrosion in pipelines and equipment, the quality of condensed water produced by indirect heating steam-consuming equipment is close to that of distilled water, which fully meets the boiler feed water standard. Recycling it and supplying it to the boiler can save water and recover a lot of heat energy. Traditional recovery mostly adopts open recovery technology, which releases steam directly and recovers condensed water, resulting in waste of secondary steam, heat dissipation and water resources. At present, the closed recovery technology is more commonly used, but there is still less recovery of the polluted condensate produced by direct contact heating equipment. Occasionally, heat exchange w...

AI Technical Summary

Problems solved by technology

Traditional recovery mostly adopts open recovery technology, which releases steam directly and recovers condensed water, resulting in waste of secondary steam, heat dissipation heat and water resources

At present, the closed recovery technology is more commonly used, but there is still less recovery of the polluted condensate produced by direct contact heating equipment. Occasionally, heat exchange with heat exchangers is used for recycling, which wastes a lot of water on the one hand. water resources, on the other hand, there is still a large amount of heat energy that cannot be recovered by using heat exchangers to recover heat energy

[0003] There are many types of condensed water recovery methods or systems in the prior art, and there are also technical solutions such as patent numbers: 93111124, 98200079, 87210157, 200620160088, 89213672, 200410102490, etc., but none of them can realize the water quality produced by direct contact heating equipment. For the full recovery and utilization of polluted condensate, after comprehensive consideration of existing technologies such as condensate recovery devices and methods on the market, it is urgent to propose a method that can recover polluted condensate produced by direct contact heating equipment. Integrated Recycling Method and System

Images