Two-stage gas boiler flue gas heat energy recovery system with water spray chamber

Abstract

The invention relates to a two-section type gas boiler smoke heat energy recovery system with a water spraying chamber. The two-section type gas boiler smoke heat energy recovery system is characterized by comprising a boiler chimney (1), an air blower (2), a primary heat exchanger (3), the water spraying chamber (4) and an absorption type energy recovery upgrading device (5). Exhausted smoke of the boiler chimney (1) sequentially passes through the air blower (2), the primary heat exchanger (3), the water spraying chamber (4) and the absorption type energy recovery upgrading device (5) to be exhausted. The two-section type gas boiler smoke heat energy recovery system with the water spraying chamber has the advantages of being high in heat energy recovery efficiency and saving the operation cost, part of waste heat is recovered by the primary heat exchanger (3), heat entering the absorption type energy recovery upgrading device (5) is reduced, and the weights, the occupied areas and the cost of the absorption type energy recovery upgrading device and related devices of the absorption type energy recovery upgrading device can all be reduced.

Description

technical field [0001] The invention relates to a two-stage gas-fired boiler flue gas heat energy recovery system with a water spray chamber, which is used for energy-saving and emission-reduction transformation of boilers or similar industries. Background technique [0002] With the vigorous promotion of national energy-saving and environmental protection policies and regulations, gas-fired boilers are gradually replacing coal-fired boilers and oil-fired boilers in many industries. The main reason is that when coal and oil are burned, a large amount of dust is produced, and the combustion produces a large amount of acid gas, which forms acid rain and damages the environment. Compared with coal and oil, natural gas is a kind of clean energy, which burns fully and produces almost no dust; natural gas has an acid gas removal link in the production process, so the acid gas content in natural gas is extremely low, and there is almost no dust in boiler exhaust smoke. Contains ac...

AI Technical Summary

Problems solved by technology

Superheated flue gas does not condense water during heat exchange, and the heat transfer coefficient is very small. Generally, finned tubes are used to enhance heat transfer, but the fins themselves increase the cost of the equipment and also increase the wind resistance of the equipment.

The absorption energy recovery and upgrading device with the patent No. 201220637050.7 has the defects of heavy weight, large footprint and high cost of the supporting system

Images