TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Process: The air separation and/or distillation units treat the mixture(s) by cryogenic distillation or liquefaction. Liquid(s) is removed from the column(s) of the air separation unit, vaporized to form part(s) of the first product and withdrawn from the air separation unit in gaseous form. Part(s) of the A+B is treated, preferably by warming, in an element of the distillation unit, and product(s) of the distillation unit is not mixed with the air separation product.After the integration of the distillation unit, fluid(s) from the distillation unit is sent to the air separation unit to be separated and/or treated, where the fluid(s) is richer in the principal component of the air separation product than the fluid mixture sent to the air separation and/or distillation unit, but less rich in the principal component of the air separation product than the first product. The fluid is used to provide additional reboil or condensation in the air separation unit. The distillation unit does not produce a product, only energy.Preferred Composition: The fluid(s) from the distillation unit to the air separation unit contains at least 10% less of the principal component of the first product than the first product from the air separation unit.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The principal component is oxygen (O2), argon (Ar), or nitrogen (N2).Preferred Mixture: The gaseous mixture treated in the air separation and distillation units comprises:(i) air and the first product contains at least 70 mol % O2 or at least 90 mol % N2 or Ar; or(ii) a mixture comprising at least 1 mol % each of N2, hydrogen (H2), carbon monoxide (CO), and/or methane (CH4), and the first product contains at least 90 mol % N2, H2, CO or CH4. EXAMPLE - In an EMBODIMENT of the process, the amount of the first product is increased such that A+B is at most C. The difference between C and A + B is B' moles/h produced by the distillation unit, where A and C differs by 0.2-10 mol.%. The amount of feed sent to the air separation unit for production of A is less than the amount of feed sent to the air separation and/or distillation unit for production of C. The distillation unit produces a second product having a principal component differing from that of the first product of the air separation unit by 1-50 % forming part of A + B, or having a different principal component, state and/or pressure from those of the first product forming part of A + B. The percentage of the principal component contained in the first and second product streams differs by at least 10 mol %. The amounts of first product A and C or A and A + B have the same principal component and the amount of minor component is between A and C (or A and A + B) multiplied by at most a factor of 1,2, optionally 2 if the principal component is O2 or Ar, or 10 if the principal component is N2.