节能新技术在合成氨技术改造中的应用

Use of New Technology for Energy-Saving in Renovation of Ammonia Technology

介绍三废流化混燃锅炉、高炉体锥形管式夹套副产中压蒸汽煤气炉、热功电联产汽轮机等技术的应用情况。使用三废混燃锅炉后,吨蒸汽煤耗下降至100 kg,吨蒸汽节约用煤80 kg,且尾气达标排放;将原Φ2 600 mm造气炉改造为高炉体锥形管式夹套副产中压蒸汽煤气炉后,副产蒸汽温度提高了80℃,单炉发气量增加了1 000～1 500 m3/h(标态),达到6 000～6 500 m3/h(标态),吨氨煤耗由1.5 t降至1.3 t,炉渣含碳质量分数由20%降至15%;采用热功电联产汽轮机技术后,造气风机每小时节电440 kW.h,拖动贫液泵每小时节电210 kW.h。

A presentation is given of the use of such technologies as the wastes fluidized combined combustion boiler, the coal gas furnace with a blast furnace body and a taper pipe jacket for generating byproduct-medium-pressure steam, and the steam turbine for coproduction of thermal work and power. With the use of the wastes combined combustion boiler, the coal consumption per ton of steam decreases to 100 kg, saving 80 kg of coal per ion of steam, and the tail gas is discharged up to the standard. When the original Ф 2 600 mm gas producer is revamped to the coal gas furnace with a blast furnace body and a taper pipe jacket for generating byproduct steam, the byproduct steam rises by 80 ℃ in temperature, the gas generated for a single furnace increases by 1 000 - 1 500 m3/h （ standard state）, reaching 6 000 -6 500 m3/h （standard state）, the coal consumption per ton of ammonia drops from 1.5 t to 1.3 t, the carbon mass fraction in the slag falls from 20% to 15%. With the adoption of the steam turbine for coproduction of thermal work and power, the gas producer blower saves 440 kW · h of power per hour, and the driven lean solution pump saves 210 kW · h of power per hour.