Method and device for recovering waste heat of coke oven crude gas

The invention relates a method and a device for recovering the waste heat of a coke oven crude gas. In the method, the refractory lining bricks of a riser are improved by using silicon carbide refractory lining bricks, a semiconductor temperature difference power generation module is arranged on the outer wall of the riser so as to use the coke oven crude gas in the riser as the heat source of a semiconductor temperature difference power generator, the riser serves as the heat collector of for semiconductor temperature difference power generation, and the waste heat recovery of the coke oven crude gas in the riser is realized. The method and the device of the invention have the advantages that: 1) the problem of recovering the waste heat of the coke oven crude gas in a coking process is solved; and 2) when the method and the device are used, the waste heat carried by the coke oven crude gas can be recovered for generating power and cooling hot water flowing out from a channel and for civil ...