Energy-saving device for producing oxygen-free pure water by utilizing waste heat and method for preparing oxygen-free pure water

Abstract

The invention relates to an energy-saving device for preparing anaerobic pure water by utilizing waste heat. The energy-saving device is characterized by comprising a preheater, a vacuum deaerator, a circulating water cooling device and a condenser, wherein one end of the vacuum deaerator is connected with the preheater, and the other end of the vacuum deaerator is connected with the circulating water cooling device; the other end of the circulating water cooling device is connected with the condenser; the energy-saving device also comprises an evaporator; the condenser is arranged above the evaporator. The whole structure is ingenious in design and lower in cost; the energy-saving device can be used for preparing the anaerobic pure water in a vacuum state by utilizing the low-temperature waste heat of equipment, and the prepared anaerobic pure water can be used as supplement water of an industrial boiler or a waste heat boiler, so that a thermal deaeration system and a continuous blowdown system of the boiler can be omitted, and the energy is more fully utilized; furthermore, related waste steam heat recovery equipment can be omitted, so that the production cost of enterprises can be greatly lowered.

Description

technical field [0001] The present invention relates to an energy-saving device, in particular to an energy-saving device for producing anaerobic pure water using waste heat and a method for preparing anaerobic pure water, which are applied to related devices such as boilers that have low-temperature waste heat and require anaerobic pure water middle. Background technique [0002] At present, various industrial boilers and waste heat boilers use ion exchange to produce demineralized water, and then deoxidize the demineralized water through various deoxygenation methods, and then use it as boiler water. The most commonly used method is thermal deoxidation. . [0003] The soft water produced by the ion exchange method just replaces the calcium and magnesium ions in the raw water with sodium ions through the exchange resin to soften the water. Since the generation of steam by steam boilers is a process of continuous concentration, this type of boiler water must be continuousl...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the energy ratio of deoxygenated steam is about 10%, that is, to produce 1 ton of steam, it needs to consume about 0.1 ton of deoxygenated steam, which greatly wastes energy and is not conducive to energy conservation and environmental protection.

[0005] On the other hand, since petrochemical enterprises and thermal power enterprises have a lot of low-temperature waste heat, especially most materials below 100°C can only be cooled by air coolers and circulating water coolers, which not only wastes a lot of heat energy, but also wastes maintenance. A large amount of electric energy for air cooling fan, circulating water pump and fan operation

Images