Mine heat furnace kiln waste heat recycling system

Abstract

The invention discloses a mine heat furnace kiln waste heat recycling system which comprises an inlet flue, a water cooling channel, a high-temperature superheater, a low-temperature superheater, a temperature reduction adjusting device, a high-temperature evaporator, a reversing flue, a horizontal flue, a low-temperature evaporator module, a coal economizer module, a water heater module, an outlet flue, a boiler barrel, a steel frame, a shock wave dust blowing device, a steel brush dust removing device, a dust falling hopper, a dust discharging device, a pollutant cooperative releasing device and a tail flue. The mine heat furnace kiln waste heat recycling system has the beneficial effects that the mine heat furnace kiln waste heat recycling system is in an L shape overall, design is reasonable, installation is rapid, the structure is compact, the performance is reliable, a dust removing effect is good, the waste heat recycling heat efficiency is high, and ultra-low pollutant emission is achieved.

Description

Technical field: [0001] The invention relates to a waste heat recovery system for recovering high and low temperature waste heat flue gas energy generated in the production process of submerged arc furnaces and kilns to generate steam for power generation or self-serving electricity. Background technique: [0002] In the production process of existing submerged arc furnaces, on the one hand, part of the high-temperature tail gas of the furnace is mainly discharged directly by air-cooling technology, the waste heat energy is zero utilized, and the smoke and dust are not treated. SiO 2 dust, while SiO 2 Dust is an additive for materials such as construction industry, ceramics, chemical industry and aviation. Direct discharge causes a large amount of energy loss, environmental heat pollution, ash pollution and waste of silicon resources; , because the dust in the waste heat flue gas has strong heat storage and adhesion, the effect of dust removal and heat absorption on the he...

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Problems solved by technology

[0002] In the production process of existing submerged arc furnaces, on the one hand, part of the high-temperature tail gas of the furnace is mainly discharged directly by air-cooling technology, the waste heat energy is zero utilized, and the smoke and dust are not treated. The discharged flue gas has a high calorific value and contains a large amount of SiO 2 dust, while SiO 2 Dust is an additive for materials such as construction industry, ceramics, chemical industry and aviation. Direct discharge causes a large amount of energy loss, environmental heat pollution, ash pollution and waste of silicon resources; , because the dust in the waste heat flue gas has strong heat storage and adhesion, the effect of dust removal and heat absorption on the heating surface is not ideal; low-parameter systems are generally used, and the thermal efficiency of the entire system is low; horizontal arrangements are usually adopted, and the evaporation system adopts auxiliary circulation Pump forced circulation mode, boiler operation and maintenance costs are high, and the horizontal layout occupies a large area and high economic cost

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