An integrated engine waste heat fresh water device

Abstract

The invention relates to an integrated engine waste heat device for fresh water production. The integrated engine waste heat device for fresh water production comprises a seawater inlet, a variable-frequency seawater replenishment pump, a seawater preheating heat exchanger, a high-temperature cooling water heat exchanger, a high-temperature cooling water circulating loop and a negative-pressure fresh water production furnace. The seawater inlet is connected with one end of the variable-frequency seawater replenishment pump through a seawater stop valve, the other end of the variable-frequency seawater replenishment pump is connected with the inlet end of the seawater preheating heat exchanger, the outlet end of the seawater preheating heat exchanger is connected with multiple high-temperature cooling water heat exchanger inlets respectively, the inlet end and the outlet end of the high-temperature cooling water circulating loop are connected with an external engine unit, the high-temperature cooling water circulating loop is partially arranged in the high-temperature cooling water heat exchanger, and high-temperature cooling water heat exchanger outlets are communicated with the negative-pressure fresh water production furnace through a seawater loop. The integrated engine waste heat device can simultaneously recover the heat from multiple engine units, the number of waste heat fresh water production devices is decreased, and the energy utilization rate is effectively improved.

Description

technical field [0001] The invention relates to a fresh water production device, in particular to an integrated engine waste heat fresh water production device used in the field of generator sets. Background technique [0002] For offshore platforms that lack natural gas, crude oil generators are usually used to generate electricity to meet the electricity demand of the entire oilfield development. When the crude oil engine is working, except a small part of the energy released by fuel combustion is converted into electrical energy, most of the rest is converted into heat energy, and the working temperature of the gas in the cylinder can reach 1800 ° C to 2000 ° C. In order to prevent damage to the cylinder due to high temperature, the cylinder jacket water circulation cooling is often used, and the cooling system can obtain about 25% of the total energy. The commonly used cooling system for generator sets is based on the plate central cooler, which exchanges heat through s...

AI Technical Summary

Problems solved by technology

When a large amount of waste heat needs to be recovered, the number of desalination devices needs to be increased. On the one hand, the workload of operation and maintenance is increased, and on the other hand, the investment in platform construction is increased, which limits the promotion of this energy-saving technology.

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