Hydrocarbon Process 

About: Hydrocarbon Process is an academic journal. The journal publishes majorly in the area(s): Heat exchanger & Energy source. Over the lifetime, 422 publications have been published receiving 1858 citations.

To estimate vapor pressure easily

Abstract: Vapor pressures as functions of temperature for approximately 700 major organic chemical compounds are given. The tabulation also gives the temperature range for which the data are applicable. Minimum and maximum temperatures are denoted by TMIN and TMAX. The Antoine equation that correlates vapor pressure as a function of temperature is described. A representative comparison of calculated and actual data values for vapor pressure is shown for ethyl alcohol. The coefficient tabulation is based on both literature (experimental data) and estimated values.

How dust in gas affects cyclone pressure drop

Abstract: This article reports on a series of simple experiments on a cyclone which were performed to visually demonstrate the vortex length, to confirm its independence of inlet velocity over the normal ranges of operation, and to differentiate between length theoretically predicted, length based on cone erosion and length based on particle to barrel adherence. Simultaneously, the effect on pressure drop of a minor amount of solids in the gas stream was dramatically demonstrated. Concludes that when dealing with non-sticky solids minimum cyclone length is preferably based on the constant surface cylindrical vortex; when dealing with ''sticky'' particles, maximum cyclone length is preferably based on the criterion of 1.6 times the cyclone cylindrical section (or less than the natural vortex length); and the pressure drop equations in API publication 931, based on 3.8-cm (1 1/2-in.) to 3.66-m (12-ft) diameter cyclones operating with pressure drops of 1.3 kPa (5 in. of water) to 137.9 kPa (20 psi), are in agreement with operation under load and result in lower pressure drop than when operated with gas only.

Pressure drop in structured packings

Abstract: The authors dealt elsewhere with mass transfer in structured packings made from wire gauze. A general correlation was presented that would appear to have applicability to sheet metal as well as to gauze packings, provided that the degree of wetting of the surface is known. In the present article, another general correlation for structured packings is presented, this one for pressure drop. The authors feel that this correlation is applicable to both gauze and sheet metal packings having the same geometry.

Cumene by catalytic distillation

Abstract: The novel concept of Catalytic Distillation has been commercialized in the CRandL MTBE process, in which combined reaction and distillation provide energy savings over conventional processes This concept has now been extended to production of cumene from benzene and propylene In this case the advantages of the technique are not only energy savings but significant reductions in by-product losses and capital requirements In this paper the development of the process is discussed and the economics of commercial operation are presented

Bacteria help desulfurize gas

Abstract: The author discusses the use of bacteria to treat acidic mine waste. They are used in the Bio-SR Process to treat sour gas within chemical plants and refineries. The first commercial installation of the process was in 1984. Since then, the process has worked successfully on a refinery's amine feed gas and Claus feed gas. The author describes several uses of the Bio-SR Process. It succeeds in overcoming the disadvantages of other wet oxidation processes. The Bio-SR Process has the following advantages: high H/sub 2/S removal efficiency; extremely low operating cost; no toxic waste; no waste; easy operation and maintenance; high H/sub 2/S selectivity; high purity sulfur; and no corrosion problem.