Film distribution device suitable for falling-film evaporator of ocean thermoelectric power generation system

Abstract

The invention relates to a film distribution device suitable for a falling-film evaporator of an ocean thermoelectric power generation system. The film distribution device is characterized by comprising spraying pipes, nozzles and heating tube bundles, wherein a plurality of spraying pipes are arranged along the length direction of a barrel of the falling-film evaporator at intervals; each spraying pipe surrounds the wall of the barrel of the falling-film evaporator in a circle along the circumferential direction; the nozzles are respectively arranged at the inner sides, close to the wall of the barrel of the falling-film evaporator, of all the spraying pipes; the nozzles extend into the barrel of the falling-film evaporator; the plurality of heating tube bundles are arranged in the barrel of the falling-film evaporator. The film distribution device is convenient in structure installation and is beneficial to realization of skid mounting.

Description

technical field [0001] The invention relates to a film distribution device, in particular to a film distribution device suitable for a falling film evaporator of an ocean temperature difference power generation system. Background technique [0002] The ocean temperature difference energy refers to the constant temperature difference greater than 20°C that exists between the surface seawater and the deep seawater (800m water depth). Driven by cold and hot seawater, some low-boiling point working fluid can be heated and vaporized to drive the steam turbine to generate electricity, and the working medium steam can be cooled and liquefied. Ocean thermal energy is the largest and most stable clean renewable energy in ocean energy. my country's South China Sea temperature difference energy reserve reaches 367 million kilowatts, and the annual power generation capacity is more than 57 billion degrees based on a 2% utilization rate. [0003] The development and utilization of ocea...

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Problems solved by technology

In the film distribution device of the horizontal tube spray falling film evaporator in the existing literature, spray pipes and nozzles are arranged in multiple directions around the heating tube bundle, so that the film distribution on the surface of the heating tubes at the lower part of the evaporator is uniform, and the efficiency of the evaporator is improved. , but due to the large number of spray pipe inlets, the installation is inconvenient, and the structure is designed for the horizontal tube evaporator, but due to the limitation of the occupied space, the whole sea type ocean temperature difference power generation system adopts the vertical tube evaporator for modularization design, this structure is not suitable for liquid distribution process of vertical tube falling film evaporator

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