Ammonia Plants Using Coal as Feedstock

The atmospheric-pressure gasification is a considerable disadvantage of this process route, which substantially increases equipment dimensions and costs, as well as the power required for synthesis gas compression. An energy input of 51.5 GJ/t NIL, (LHV) has been reported. According to [563], the atmospheric ACGP gasifier (Section 4.1.2.3) could lower the consumption to 44 GJ/t NH( (HHV). 

Lurgi Process. Lurgi [544], [545], [578]-[582], [1167] offers a concept using its proprietary Lurgi dry bottom gasifier, described in Section 4.1.2.3. The moving-bed 

Ube Industries commissioned a 1000 t/d ammonia plant in 1984 using Texaco s coal gasification process [1161], [1173]. An energy consumption of 44.3 GJ/t NH3 is stated, which is lower than the 48.5 GJ/t NH3 quoted for another Texaco coal gasification-based ammonia plant [544]. 

The other coal gasification technologies were discussed in Section 4.1.2.3, but so far no newer ammonia concepts are bases on them. 

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