| abstract |
The invention discloses a kind of flue gas waste heat recovery water jacket furnaces, including sequentially connected smoke-fire-tube, smoke box and furnace body；It is connected with natural gas outlet conduit after Imported gas pipeline and level-one heating on furnace body, is provided with throttle valve on natural gas outlet conduit after level-one heating, bypass pyrotechnics pipeline is connected on smoke box, bypass and be connected with heat exchanger on pyrotechnics pipeline；Natural gas outlet conduit accesses furnace body after connecting heat exchanger by natural gas line after throttling again after level-one heating；Natural gas outlet conduit after second level heats is provided on furnace body.The present invention bypasses by increasing a bypass pyrotechnics pipeline on smoke box and is connected with heat exchanger on pyrotechnics pipeline.The waste heat conveying of flue gas is come by bypass pyrotechnics pipeline, natural gas line temperature after throttling is increased, the too low generation hydrate of natural gas line temperature after throttling is avoided to cause natural gas line ice stifled.Under requirement of the auxiliary hot natural gas line to certain temperature, it can be further reduced the combustion material that water jacket furnace uses, reduce production cost.Fume afterheat just discharges the environmental pollution of generation. |