System and method for waste heat recovery and tail gas treatment of marine main engine

Abstract

The invention discloses a system and a method for waste heat recovery and tail gas treatment of a marine main engine. The system comprises a waste gas boiler, a steam turbine, an electric generator, a carbon dioxide absorption tower, a water pump, a water tank, a horizontal ammonia converter, an alkane cracker and an air separator, wherein the waste gas boiler is connected with the steam turbine; the waste gas boiler is further connected with the carbon dioxide absorption tower; a stainless steel shower nozzle is arranged inside the carbon dioxide absorption tower; the waste gas boiler is connected with the air separator and the horizontal ammonia converter in sequence; the horizontal ammonia converter is connected with the alkane cracker through a carbon steel pipeline; and the horizontal ammonia converter is further connected with the water tank, the water pump and the carbon dioxide absorption tower in sequence. The system for waste heat recovery and tail gas treatment of the marine main engine based on oxygen-enriched combustion and carbon dioxide capture technology takes material flow and energy flow into account simultaneously, the waste heat of the marine main engine is efficiently utilized, the utilization efficiency of energy is improved, the carbon dioxide in the tail gas is absorbed based on carbon capture technology, and the carbon emission is reduced.

Description

technical field [0001] The invention relates to a ship main engine waste heat recovery and tail gas treatment system, in particular to a ship main engine waste heat recovery and tail gas treatment system based on oxygen-enriched combustion and carbon capture technology. The invention belongs to the technical field of ship energy saving and emission reduction. Background technique [0002] Developing a low-carbon economy and addressing climate change has become an urgent task and goal for all countries in the world. The shipping industry is one of the main sources of greenhouse gas emissions, accounting for about 3.3% of the total global greenhouse gas emissions. In order to reduce greenhouse gas emissions from ships, the International Maritime Organization (IMO) proposed a ship energy consumption limit index (EEDI, the ratio of carbon dioxide emissions to cargo capacity), and proposed that the carbon efficiency of ships built between 2015 and 2019 must be increased by 10%. ...

AI Technical Summary

Problems solved by technology

Most of the current research only considers the utilization of waste heat from the exhaust of the main engine, and does not consider the treatment and utilization of greenhouse gases emitted from the exhaust.

Images