Process gas load will affect vacuum ejector perfor-mance. Each ejector has a design performance curve that correlates process gas load with suction pressure (Fig. 7). The ejector performance curve gas load is represented by equivalent steam load (lb/hr), calculated from the pro-cess gas component flowrates to the ejector. Fig. 7 is a
As the drying process progresses, the volume of vapor decreases and less condenses in the condenser; however the concentration of vapor extracted by the backing pump will tend to be larger if the concentration of inert gas decreases. If the vapor pressure in the condenser drops below the condensation threshold,.
tem and causes the vacuum condenser to be larger. A well-designed process vacuum condenser will not have pressure drop of more than 10 percent of the operating pressure. Lower pressure drop is the result of specialized designs for high-vacuum applications. A high vacuum process condenser is not like an ordinary heat exchanger.
Jun 17, 2016· I won't go for the mathematical proof, but I try to explain qualitatively. Condenser in rankine cycle is kept below atmospheric pressure to extract more of amount of work from condensing steam, the following TS curve explains this — A normal cycle.
Vacuum gas oil or VGO is one of those mystery products talked about by refiners but barely understood by those of us that are not engineers. However it is an important intermediate feedstock that can increase the output of valuable diesel and gasoline from refineries. Lighter shale crudes such as Eagle Ford can produce VGO material direct from primary distillation.
Home; Low capital revamp increases vacuum gas oil yield. In 2000, Repsol YPF's Lujan de Cuyo, Argentina, refinery completed a vacuum unit revamp that increased total gas oil yield by 6% on whole .
Gas-oil yield improvements for small incremental pressure reductions are high-er at low column pressures than at higher pressures. For example, a 2 mmHg pressure reduction is made for columns operating at 16 mmHg and 8 mmHg. Both have a constant flash-zone temperature of 760°F. Lowering pressure from 16 to 14 mmHg and from 8 to 6 mmHg will increase gas-oil yield by 0.46% and 0.77%, …
A common cause of poor condenser vacuum is excessive air ingress or leakage. Any fall in condenser vacuum would have consequent rise in turbine heat rate vis-à-vis plant heat rate. As a result, cost of power generation would increase with eventual loss in revenue earning.
Effects of Crude Oil, Low Point Pour Fuel Oil and Vacuum Gas Oil Contamination on the Geotechnical Properties Sand, Clay and Laterite Soils. Hashim Mohammed Alhassan*, Sabiu Abdullahi Fagge** *(Department of Civil Engineering, Bayero University Kano-Nigeria) ** (Graduate Student, Department of Civil Engineering, Bayero University Kano) ABSTRACT