Small brick kiln smoke waste heat utilization device based on Stirling engine

Abstract

The invention relates to a small brick kiln smoke waste heat utilization device based on a Stirling engine, and relates to a waste heat utilization power generation device. The small brick kiln smoke waste heat utilization device is composed of a smoke flue, induced draft fans, the Stirling engine, a heat engine heat exchanger, heat exchanger fins and a power generator; the small brick kiln smoke waste heat utilization device is characterized in that high temperature smoke is sucked into a smoke pipe through the first induced draft fan from a kiln waste heat source, a working medium in the heat exchanger exchanges heat with the high temperature smoke in the smoke flue, at the same time, the fins on the heat exchanger have the effect of improving the heat transferring efficiency, the smoke temperature drives the Stirling engine to run, and therefore the power generator is driven to generate power, electric energy is output to heat users, exhaust air in smoke obtained after heat exchange is exhausted into atmosphere through the second induced draft fan. By means of the device, the smoke exhausting temperature can be greatly reduced, heat source pollution and energy resource waste are reduced, economical efficiency and environmental protection property of an overall plant are improved, everyday commercial power and life power are provided for an enterprise, surplus electric energy is conveyed to a power grid, and meanwhile, the device is suitable for small plant high-temperature smoke waste heat utilization.

Description

technical field [0001] The patent of the present invention relates to a waste heat utilization device, especially a waste heat utilization device based on a Stirling engine and a small brick kiln. Background technique [0002] Large-scale brick kilns have the advantages of low pollution, high output, and advanced technology. However, due to the high transportation costs and the low cost of the products themselves, most of the existing 160,000 brick and tile enterprises in my country have "wide distribution, small scale, Small and medium-sized enterprises with the characteristics of "low capital". As a traditional high-pollution and high-energy-consuming enterprise, the brick kiln factory generally accounts for 25% to 40% of the total energy in the waste heat dissipation of flue gas. Usually, super-large or large brick kiln enterprises use multi-stage waste heat boilers to recover and utilize waste heat from flue gas, but waste heat boilers and their supporting power generati...

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Problems solved by technology

[0004] The purpose of the patent of the invention is to use the Stirling engine to recover waste heat, solve the problems of waste heat waste of flue gas and heat source pollution in small factories such as brick kilns, and reduce costs for small and medium-sized enterprises

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