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A seawater desalination system for recovering various waste heat of diesel engines

A diesel engine and waste heat technology, which is used in seawater treatment, general water supply conservation, water/sewage treatment, etc., can solve the problem that the waste heat of flue gas has not been developed and utilized, and achieves the goal of avoiding internal scaling, avoiding dew point acidification, and ensuring stable operation. Effect

Active Publication Date: 2022-07-05
自然资源部天津海水淡化与综合利用研究所
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Problems solved by technology

Conventional waste heat utilization equipment usually only recovers the waste heat of cylinder jacket water, but the waste heat of flue gas, which accounts for more than half of the exhaust waste heat, has not been developed and utilized

Method used

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  • A seawater desalination system for recovering various waste heat of diesel engines

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings. The following is only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0013] A seawater desalination system for recovering various waste heat of diesel engines (see figure 1 ), including diesel engine 1, first heat exchanger 3, second heat exchanger 8, water jet vacuum pump 10, evaporator 17, condenser 19, product water buffer tank 23, product water tank 25, the evaporator 17 and The condenser 19 is arranged in the casing 7, the condenser is arranged above the evaporator, and a foam trapping device 18 is arranged between the evaporator and the condenser; The other end is connected to the first heat exchanger 3, one end of the cylinder liner water inlet pipe 6 is connected to the first heat exchanger 3, and the other end is connected to the cylinder liner water tank of the diesel engine; the heat transfer medium ou...

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Abstract

The invention discloses a seawater desalination system for recovering various waste heat of a diesel engine. The system includes a diesel engine waste heat recovery unit, a seawater desalination unit, a vacuum pumping unit and a product water unit; A heat exchanger and a second heat exchanger for flue gas heat exchange; the seawater desalination unit includes a shell, an evaporator and a condenser; the product water unit includes a fresh water buffer tank, a fourth water pump and a product water tank; vacuuming The unit includes a water jet vacuum pump. The system of the invention uses diesel engine cylinder jacket water and high-temperature flue gas as heat sources to sequentially heat the heat transfer medium to increase the temperature of the circulating heat transfer medium. fuel efficiency. The invention effectively avoids the acidification of the dew point of the flue gas, corrodes the device, prolongs the cleaning period, and can meet the fresh water demand in, for example, islands and remote areas.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, in particular to a seawater desalination system for recovering various waste heat of a diesel engine. Background technique [0002] With the optimization of energy structure and the promotion of energy conservation and emission reduction policies in China, various waste heat utilization technologies have been widely used in urban life and production heating. In recent years, diesel generator sets have also been widely used. Although their power is low, they are widely used in mines, railways, field construction sites, roads due to their small size, flexibility, lightness, complete supporting facilities, and easy operation and maintenance. Traffic maintenance, as well as factories, enterprises, hospitals and other departments, as backup power or temporary power. During the operation of the diesel generator set, the exhaust gas temperature can reach about 500 ℃, and the cylinder jack...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/16C02F103/08
CPCC02F1/16C02F2103/08C02F2303/10Y02A20/124
Inventor 李强徐克张晓晨徐国荣苗超韩旭
Owner 自然资源部天津海水淡化与综合利用研究所
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