Vacuum waste heat steam boiler

Abstract

The invention relates to a vacuum waste heat steam boiler which is characterized by comprising a boiler housing, connected to a vacuumizer, capable of bearing a vacuum degree which is lower than 400 Pa, a warm water evaporation chamber, a water baffle plate, a second evaporation chamber and a high-temperature heating chamber successively arranged in the boiler housing and a steam storage chamber located on the lateral upper side of the high-temperature heating chamber. An evaporator formed by a plurality of longitudinally arranged evaporation tubes is arranged in the middle of the warm water evaporation chamber 5, a waste heat warm water inlet communicating to a boiler water distributing device is formed above the evaporator and a waste heat warm water outlet is formed below the evaporator. Spray heads connected to a water outlet of an evaporative water pressure pump are arranged at one ends of the evaporation tubes forming the evaporator, and the evaporative water pressure pump communicates to the boiler water distributing device; the high-temperature heating chamber is provided with a hot water exchanger; the second evaporation chamber and the steam storage chamber separately communicate to an internal vacuumizer through pipelines; and a steam distributing valve is arranged on the top of the steam storage chamber.

Description

technical field [0001] The invention relates to a vacuum waste heat steam boiler which evaporates warm waste hot water in a vacuum cylinder, and the evaporated steam is heated to become high-temperature and high-pressure steam. Background technique [0002] The full name of the vacuum boiler is a vacuum phase change boiler, which forms a negative pressure vacuum environment inside the closed furnace body. The heat medium water is filled in the body, and the heat medium water is heated by combustion or other methods. The heat medium water is heated to generate steam, and the steam heats the water in the heat exchanger tube through condensation heat exchange to realize hot water supply. Vacuum filtration heat direction: oil, natural gas, gas, electricity → combustion (electric conversion heat) → boiled steam condensation heat exchange → heat exchanger → heat conduction → water. [0003] The working principle of the vacuum boiler: Utilizing the low boiling point of water in a ...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a vacuum boiler using waste heat to solve the shortcomings of the above-mentioned existing vacuum boilers, such as high energy consumption, difficult control, and only hot water output, as well as excessive power consumption of the existing electric steam boilers. Evaporate in the furnace to produce low-temperature and low-pressure steam that can be precisely controlled by electric heating steam boiler

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