Acheson

The dehydration unit at Acheson is described briefly by Lock (1997). At Acheson they dehydrate about 13 x 103 Sm3/d of acid gas (90% C02 and 10% H2S) in a glycol dehydration unit. This dehydration unit operates at about 1500 kPa. 

The regenerator offgas and flash tank gas are sent to a flare, and this represents an emission from their AGI process. This is estimated 

All of the equipment in contact with the glycol (including the absorber tower, flash tank, regenerator shell and firetube, and the preheat coils) are made from 316L stainless steel. All other components are made from carbon steel. 

In many case dehydration of acid gas beyond what can be achieved by compression and cooling alone is not necessaiy. However, there are potential problems with dehydrating acid gas, and the design engineer should be aware of these limitations. 

and Miller, J.H. 1984. Drying substantially supercritical C02 with glycerol. US Patent No. 4,478,612. Filed July 27,1983. Date of Patent Oct. 23,1984. 

---

New Trends in Heterocyclic Chemistry, edited by R.B. Mitra, N.R. Ayyangar, V.N. Gogte, R.M. Acheson and N. Cromwell... 

Acheson, R. M. 1976 B, An Introduction to the Chemistry of Heterocyclic Compounds, Wiley New York London Sydney... 

The same reaction performed in ether at 0°C (336) gives the same major adduct, but the structure proposed by Acheson et al. corresponds to 86, although such a structure is hardly compatible with the presence of an isolated low-field proton. Very recently, in a reinvestigation of these cyclo-additions of DMA to azoles (338, 339), Acheson et al. were able to establish the correct structure of the adducts on the base of CNMR spectra and X-ray diffraction studies. The adduct of thiazole is represented by formula 87, and it results from the rearrangement of the... 

Acheson et al. (336) by the condensation of DMA with 2,4-dimethyl-thiazole in THF (Scheme 56). As Reid et al. (335) first proposed, the adduct of 2,4-dimethylthiazole with DMA in DMF (93) results from the normal cyclo-addition with rearrangement (Scheme 57). The conclusive demonstration of this structure was recently given by Acheson et al. (339)... 

Acheson process Achlorhydria Achondrites Achromatic hologram Achromobacter sp. Achromycin Achromycin [60-54-8]... 

The first artificial abrasive, siUcon carbide [409-21 -2] SiC, was produced by Edward Acheson in 1891 (19). This invention led to the formation of the Carbomndum Company. The registered trademark, Carbomndum, is essentially synonymous with siUcon carbide. 

The furnace that made the graphite industry possible was invented in 1895 by Acheson (13) and is stiU in use today with only minor modifications. 

Fig. 5. The Acheson furnace. Courtesy of UCAR Carbon Technology Corp.

These interesting results have been quoted by Sokolov (79RCR289) and by Acheson and Elmore (78AHC(23)263). However, they proved to be erroneous, as to both structure (348) (a fluoroborate, not a complex) and structure (349) (for which (350) represents the correct structure established by X-ray crystallography (83T2193)). 

Ruff, R. [,., Petito, C. K., and Acheson, L. S. (1981). Neuropathy associated with chrome low level exposure to -hexane. Clin. Toxicol. 18, 515-519. 

Artificial graphite was first manufactured on a large scale by A. G. Acheson in 1896. In this process coke is heated with silica at 2500°C for 25-35 h ... 

Silicon carbide was made accidently by E. G. Acheson in 1891 he recognized its abrasive power and coined the name carborundum from carbo(n) and (co)rundum (AI2O3) to indicate that its hardness on the Mohs scale (9.5) was intermediate between that of diamond (10) and AI2O3 (9). Within months he had formed the Carborundum Co. for its manufacture, and current world production approaches 1 million tonnes annually. 

---