In Aspen, what does the Fortran language represent in the simulated coal gasification process?
Thread Content
What does Fortran represent in the Aspen simulation of the coal gasification process? As follows: C FACT is the factor used to convert the ultimate analysis values to a wet basis. FACT = (100 – WATER) / 100; H2O = WATER / 100; ASH = ULT(1) / 100 * FACT; CARB = ULT(2) / 100 * FACT; H2 = ULT(3) / 100 * FACT; N2 = ULT(4) / 100 * FACT; CL2 = ULT(5) / 100 * FACT; SULF = ULT(6) / 100 * FACT; O2 = ULT(7) / 100 * FACT. I know that terms like WATER, ULT, and H2O are predefined; I want to ask whether these components are defined only if they appear in the coal combustion formula, and whether substances that are not present, such as NH3, do not need to be defined? But it is also a component of the vaporization products. Also, ULT has been defined; so what do ULT(1), ULT(2)…… mean? Do they exist in the system? And what does each of the above formulas represent? If you know anything, please let me know. Another question is: why is the conversion rate for defining RYield defined using the aforementioned formula? Thank you!
ULT is an array variable predefined by ASPEN, used to represent elemental analysis. ULT(1) to ULT(7) correspond respectively to the ash content, carbon content, hydrogen content, nitrogen content, chlorine content, sulfur content, and oxygen content. This order is fixed and determined by their sequence in the COMPONENT ATTR. of unconventional components. Similar to this are industrial analysis and sulfur analysis. The purpose of this FORTRAN module is to specify the contents of various pyrolysis products. The pyrolysis products are assumed in advance within the RYIELD module, but it is ultimately this FORTRAN module that determines them
So can users define the conversion rate of the Ryield reaction here?