Cement, Energy and Environment

-- costs for ProJet smart® with ProTex filter media in comparison to a conventionally designed jet– pulse filter. The ProJet smart® product family is available as electrical and pneumatic, ready– for-connection series filters, incl. fan, sound absorber and JetBus filter control system, with either a dust collection chamber or as silo or bunker filter. The modular system includes four filter head sizes which can be combined with four filter bag lengths and covers an operating volume flow range between 2000m 3 /h a.c. and 20 000m 3 /ha.c . Reducing the LCC for process filters With the design of process filters in the cement and basic materials industries, the aspect of the operating costs and consequently, above all , the energy costs are of particular significance. The period of time drawn upon by operators for the cost comparison of different filter concepts in new investment or upgrade decisions is 10 years in many cases. For a typical filter size of 1.2 million m 3 /h a.c. in the exhaust gas flow, the operating costs far exceed the investment costs for the filtering installation in this Figure5. ProJet mega® 136136-8000 D(double row filter, semi-offline, Turn- key project HeidelbergCement,Cementa Slite, Sweden, comm– issioned 11/2009, product separation ofrotary kiln and Rawmeal- mills exhaust gas, 1.2 million m3/h a. c. , dust accumulation up to 600 tlh) balance sheet period. Thus in the performance specifications for the development of the new process filter series from lntensiv-Filter, the lowering of the operating costs had top priority. Another focal point of the development work was in the control of the extremely high variance in process filtering installations, to allow for various procedural and structural conditions. The aim of the "standardization" project carried out between 2007 and 2009 at lntensiv- Filter was therefore the reduction in part variety (inner design variance) with simultaneous retention of a maximum number of possible designs (variability). The result is a completely newly developed and modular filter series designed in 30 CAD for the assembly, the ProJet mega® shown in Figure 4. From a relatively easy-to-grasp number of constructional basic elements, over 600000 different versions can be displayed just for row filters with 1-12 filter chambers (each with eight injector tubes x 8 - 17 injectors per row) alone. The versions extend from single row filters with 20 000m 3 /h a.c., cover row filters with maximum 12 m bag length, 64 filter chambers (x136 bags) and a volume flow of 3000 000 m 3 /h a.c. For a significant reduction in the operating costs and thus the LCC, the ProJet mega@ series has the following characteristics: Figure4. ProJet mega® process filters • Distribution of raw gas via a CFD optimized flow guidance system to achieve a cross-flow and top-down 49