Types of condensers
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Steam condenser

The steam condenser is often used for the condensation of the final effect secondary steam in multi effect evaporators to ensure the vacuum degree of the final effect evaporator. For example (1) spray type condenser, cold water is sprayed in from the upper nozzle, and steam enters from the side inlet. After full contact with cold water, steam is condensed into water, and at the same time, it flows down the pipe, and some non condensable bodies may also be carried out. Example (2) Filling condenser, where steam enters the side pipe and comes into contact with the cold water sprayed from above. The condenser is filled with ceramic ring fillers, which are soaked in water and increase the contact area between cold water and steam. After the steam condenses into water, it flows out along the lower pipeline, and non condensable gas is pumped out by a vacuum pump along the upper pipeline to ensure a certain vacuum degree inside the condenser. Example (3) A spray plate or sieve plate condenser is designed to increase the contact area between cold water and steam. The hybrid condenser has the advantages of simple structure, high heat transfer efficiency, and easy to solve corrosion problems.

Boiler condenser

Boiler condenser, also known as flue gas condenser, can effectively save production costs, reduce the exhaust temperature of the boiler, and improve the thermal efficiency of the boiler. Ensure that the boiler operates in compliance with national energy-saving and emission reduction standards.

Energy conservation and emission reduction are the key and guarantee for the transformation of economic development mode in the national "Eleventh Five Year Plan" outline, and an important symbol of implementing the scientific development concept and ensuring good and fast economic development. Special equipment, as a major energy consumer, is also an important source of environmental pollution, and the task of strengthening energy conservation and emission reduction of special equipment is a long and arduous task. The Outline of the Eleventh Five Year Plan for National Economic and Social Development has established a binding indicator for economic and social development, which is a reduction of about 20% in total energy consumption per unit of domestic production and a 10% reduction in total emissions of major pollutants. The boiler, known as the "heart" of industrial production, is a major energy consumer in China. High efficiency special equipment mainly refers to heat exchange equipment in boilers and pressure vessels.

In traditional boilers, after the fuel is burned in the boiler, the exhaust gas temperature is relatively high, and the water vapor in the flue gas is still in a gaseous state, which will carry a large amount of heat. Among various fossil fuels, natural gas has the highest hydrogen content, with a mass percentage of about 20% to 25%. Therefore, the exhaust contains a large amount of water vapor. It is estimated that the heat carried away by the steam generated by burning 1 square meter of natural gas is 4000KJ, which is about 10% of its high calorific value.

The waste heat recovery device for flue gas condensation utilizes lower temperature water or air to cool the flue gas, achieving a decrease in flue gas temperature. Near the heat exchange surface area, water vapor in the flue gas condenses, while realizing the release of sensible heat from the flue gas and the release of latent heat from water vapor condensation. The water or air in the heat exchanger is heated by absorbing heat, achieving heat recovery and improving the thermal efficiency of the boiler.

Improvement of boiler thermal efficiency: The theoretical flue gas volume for 1NM3 natural gas combustion production is about 10.3NM3 (approximately 12.5KG). Taking the excess air coefficient of 1.3 as an example, 14NM3 (approximately 16.6KG) of flue gas is generated. If the temperature of the flue gas is reduced from 200 degrees Celsius to 70 degrees Celsius, it will release about 1600KJ of physical sensible heat, 50% of water vapor condensation rate, and 1850KJ of latent heat of vaporization. The total heat release is 3450KJ, which is about 10% of the low level heat generated by natural gas. If 80% of the flue gas is taken into the heat recovery device, it can improve the heat energy utilization rate by more than 8% and save nearly 10% of natural gas fuel.

Split layout, diverse installation forms, flexible and reliable.

As a heating surface, spiral finned tubes have high heat transfer efficiency, sufficient heating surfaces, and low negative force in the flue gas side system, meeting the requirements of ordinary burners.