In steel manufacturing plants, blast furnace gas is generated from a furnace in which steel ore, coke and limestone are heated and melted. It is commonly used to produce electricity or released to the atmosphere in general; however, it can be utilized as a carbon source to produce C1 value-added chemicals. In this study, we propose two production schemes for methanol production and co-production of methanol and ammonia from blast furnace gas. Both cases were simulated using Aspen Plus V12 and economics was evaluated using Aspen Process Economic Analyzer (APEA). As a result, the methanol production case produced 99.4 wt% 232 t/day of methanol and the co-production case produced 97.7 wt%, 453.4 t/day of ammonia and 99.8 wt%, 263 t/day of methanol. The total annual cost of the methanol production case is US 121.6 M$/y and US 222.1 M$/y at the co-production case. The NPVs are −810.4 M$ in the methanol production case and −981.3 M$ in the co-production case, respectively. By sensitivity analysis, it is shown that the co-production case can be more economically feasible in the aspect of NPV when the raw material cost decreases 30%.

在钢铁制造厂，高炉煤气是由加热和熔化钢矿石、焦炭和石灰石的熔炉产生的。它通常用于发电或一般释放到大气中；但是，它可以用作碳源来生产 C1 增值化学品。在本研究中，我们提出了两种生产方案，分别用于从高炉煤气生产甲醇和联产甲醇和氨。两种情况均使用 Aspen Plus V12 进行模拟，并使用 Aspen Process Economic Analyzer (APEA) 评估经济性。结果，甲醇生产案例生产了 99.4 wt%、232 吨/天的甲醇，联产案例生产了 97.7 wt%、453.4 吨/天的氨和 99.8 wt%、263 吨/天的甲醇。甲醇生产案例的年总成本为 1.216 亿美元/年和 222 美元。在联合制作案例中为 1 百万美元/年。甲醇生产情况下的 NPV 分别为 -810.4 M$ 和联产情况下的 -981.3 M$。敏感性分析表明，当原材料成本降低 30% 时，联产方案在 NPV 方面更具经济可行性。