A thermal film coupled marine energy supply system

Abstract

The invention discloses a thermal film coupled marine energy supply system, which relates to the fields of seawater desalination, energy saving and emission reduction. The reverse osmosis seawater desalination supply components of the system include seawater pretreatment device, heat recovery device and reverse osmosis device; The reverse osmosis device; the input end of the water turbine is connected with the brine output end of the reverse osmosis device through the pipeline, the output end of the water turbine is connected with the brine input end of the thermal desalination device through the pipeline, and the water turbine is connected with the compressor; the compressor is connected with the thermal desalination device The device forms a steam circulation path. The invention can couple the function of reverse osmosis membrane water production with the function of thermal water production, and then use the residual pressure of brine during reverse osmosis membrane water production to couple thermal method to realize evaporation water production, thereby significantly reducing energy consumption and cost , which is ideal for promotion.

Description

technical field [0001] The invention relates to the fields of seawater desalination and energy saving and emission reduction, in particular to a thermal film coupled marine energy supply system. Background technique [0002] Like energy, water is one of the basic needs of human production and life. Each person must ensure at least 25 liters of domestic water per day (5 liters of drinking water + 20 liters of washing water), and in hot areas, the demand is even greater , the minimum domestic water consumption is 10 liters / day. As an independent individual, the ship sails far away from the land. The crew and equipment need to consume a lot of fresh water. For a sea ship with 100 people, at least 3 tons of domestic water is needed every day, and the water used for equipment (the water required for the work of ship equipment, such as boiler replenishment water) etc.) and more; for large steam-powered ships, the supplementary boiler water is about 1% of the steam consumption of ...

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Problems solved by technology

However, in order to save installation space, it is difficult for thermal seawater desalination devices on ships to be equipped with multi-stage and multi-effect desalination systems like on land. Generally, only one-stage desalination system is installed, but the thermal efficiency of the first-stage desalination system is low when heating seawater , so the heat source cost of the thermal seawater desalination device on the ship has become the main cost of water production, even as high as nearly 100 yuan / ton

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