Furthermore, the thermal efficiency of the reformer furnace rarely exceeds 50 percent. Substantial improvements in thermal efficiency, thruput and operating costs can be achieved if ethane and heavier hydrocarbons are converted at temperatures below those in the main reformer. This can be done in a...
Standard curve using 1,1,3,3-tetramethoxypropane (0–10 ppm) was prepared. TBARS value was notified as mg malonaldehyde/kg sample. Color Analysis Color of bio-calcium powder was examined by a Hunter lab colorimeter (Color Flex, Hunter Lab Inc., Reston, VA, USA). Total difference in ...
range of 0° C. to the reflux temperature of the reaction mixture but usually not over 100° C, and preferably within the range of 20° to 60° C. may be used. The quaternization may be carried out in the present of a volatile solvent which is inert under the reaction conditions. ...
These cold shoepre-insulated pipe supportswere designed for a cryogenic pipeline at a petrochemical complex in Louisiana. These supports range in size from 46" to 52" in diameter and are engineered for temperatures as low as -20°F. The supports feature a dual-density polyurethane foam (PUF)...
The MDA concentration was calculated against a calibration curve using 1,1,3,3-tetramethoxypropane (108383, Sigma-Aldrich, St. Louis, MO, USA) as the external standard (range: 0.1–83.5 μM). The results were expressed as MDA/TAS ratio, a marker of oxidative stress [46]. 2.9. 1H ...