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Rotary film deaerator

Pressure vessel (yālì ró ng qì), English: pressure vessel refers to a closed device that contains gas or liquid and carries a certain pressure. In order to implement scientific management and safety inspection more effectively, pressure vessels are divided into three categories according to working pressure, medium harmfulness and its role in production in China's Pressure Vessel Safety Supervision Regulations. And for each category of pressure vessels in the design, manufacturing process, as well as inspection items, content and methods to make different provisions. Pressure vessels have implemented the safety and quality licensing system for imported goods, and goods that have not obtained the import safety and quality license are not allowed to be imported. According to the latest TSG21-2016 "Safety and Technical Supervision Regulations for Fixed Pressure Vessels", it should be divided into the first group of media and the second group of media according to the media, and then classified into categories I, II and III according to the pressure and volume. The so-called first, second and third categories of the old capacity regulations are no longer applicable.
A pressure vessel is a closed container that can withstand pressure. The use of pressure vessels is extremely wide, it has an important position and role in many sectors such as industry, civil, military and many other fields of scientific research. Among them, the pressure vessels used in the chemical industry and petrochemical industry are the most, and the pressure vessels used in the petrochemical industry alone account for about 50% of the total number of pressure vessels. Pressure vessels are mainly used for heat transfer, mass transfer, reaction and other technological processes in the chemical and petrochemical fields, as well as storage and transportation of pressurized gases or liquefied gases; they are also widely used in other industrial and civil fields, such as air compressors. All kinds of special compressors and auxiliary machines of refrigeration compressors (coolers, buffers, oil-water separators, gas storage tanks, evaporators, liquid coolant storage tanks, etc.) are pressure vessels.

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Product Introduction

rotary film deaerator
Product Features
Strong adaptability, stable operation under low temperature water, overload and other conditions; small exhaust volume; high deoxygenation efficiency, stable dissolved oxygen; reliable operation and convenient maintenance.
Product Introduction
In order to prevent corrosion of thermal equipment and its pipelines, dissolved oxygen and other gases dissolved in boiler feed water must be removed to ensure safe operation and long service life of thermal equipment.
The rotary film deaerator is a hybrid heater. Its main function is to remove non-condensing gases such as oxygen and carbon dioxide in the demineralized water, followed by heating the demineralized water to the saturation temperature under the operating pressure of the deaerator, while the heating steam source is generally the extraction steam on the pressure side of the power plant turbine and other residual steam, high temperature drainage, etc., thus improving the thermal economy of the system, and storing the saturated water with standard oxygen content in the deaerator water tank to meet the boiler's needs at any time, ensure the safe operation of the boiler. The rotary film deaerator is divided into two sections: rotary film deaerating section and deep deaerating section. The boiler feed water from the low-pressure heater first enters the water chamber of the deaerator. Due to a certain pressure difference, the water is injected into the membrane nozzle through the inlet hole. When the water is injected into the inner wall of the nozzle, it immediately swirls down along the inner wall of the nozzle, forming a hollow rotating water membrane skirt at the outlet end of the nozzle. The inner and outer sides of the water film skirt are fully contacted with the heating steam, the water is heated to the saturation temperature instantly, most of the non-condensing gas is rapidly precipitated, and the initial oxygen removal in the rotary film deoxidizing section is about 90%. The preliminary deoxygenated water is evenly distributed to the packing layer through the water spray tray. In the packing layer, the water is separated into water film again, so that the surface tension of the water is greatly reduced, and there is enough residence time to contact with the superheated steam, and the residual oxygen in the water is further precipitated in the packing layer, so that the oxygen content in the outlet of the deaerator meets the standard requirements (oxygen content <15 μg/L, high pressure oxygen content <7 μg/L), so this section is called deep deaerating section. All the non-condensed gases removed in the rotary film deaeration section and the deep deaeration section rise to the exhaust pipe at the top of the deaerator and are discharged to the atmosphere.
The main forms of rotary film deaerator are atmospheric (low pressure) deaerator and pressure (high and medium pressure) deaerator, and the operation mode is divided into constant pressure and sliding pressure. The connection arrangement of deaerating head and water storage tank is divided into vertical and horizontal types.

Pressure vessel (yālì ró ng qì), English: pressure vessel refers to a closed device that contains gas or liquid and carries a certain pressure. In order to implement scientific management and safety inspection more effectively, pressure vessels are divided into three categories according to working pressure, medium harmfulness and its role in production in China's Pressure Vessel Safety Supervision Regulations. And for each category of pressure vessels in the design, manufacturing process, as well as inspection items, content and methods to make different provisions. Pressure vessels have implemented the safety and quality licensing system for imported goods, and goods that have not obtained the import safety and quality license are not allowed to be imported. According to the latest TSG21-2016 "Safety and Technical Supervision Regulations for Fixed Pressure Vessels", it should be divided into the first group of media and the second group of media according to the media, and then classified into categories I, II and III according to the pressure and volume. The so-called first, second and third categories of the old capacity regulations are no longer applicable. A pressure vessel is a closed container that can withstand pressure. The use of pressure vessels is extremely wide, it has an important position and role in many sectors such as industry, civil, military and many other fields of scientific research. Among them, the pressure vessels used in the chemical industry and petrochemical industry are the most, and the pressure vessels used in the petrochemical industry alone account for about 50% of the total number of pressure vessels. Pressure vessels are mainly used for heat transfer, mass transfer, reaction and other technological processes in the chemical and petrochemical fields, as well as storage and transportation of pressurized gases or liquefied gases; they are also widely used in other industrial and civil fields, such as air compressors. All kinds of special compressors and auxiliary machines of refrigeration compressors (coolers, buffers, oil-water separators, gas storage tanks, evaporators, liquid coolant storage tanks, etc.) are pressure vessels.

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