Davy Powergas plants

Alkazid A development of the Alkacid proces. The absorbent is an aqueous solution of the potassium salt of either methylamino propionic acid ( Alkazid M ), or dimethylamino acetic acid ( Alkazid DIK ). Developed by Davy Powergas, Germany. Over 80 plants were operating in 1975. 

Contact Sulfuric Acid Process Monsanto, Parsons, Davy Powergas, others Can accept elemental sulfur, or H2S and S02-bearlng streams down to about 5Z sulfur content A double contact/double absorption plant can recover up to 99.8Z of the sulfur fed to it. All sulfur compounds handled... 

The next breakthrough of importance for future 2-ethylhexa-nol plants occurred in the mid seventies. This was the development of the rhodium-catalyzed oxo process by Union Carbide, Davy Powergas and Johnson-Matthey (See Chapter 6). This process not only operates at lower temperatures and pressures than the conventional cobalt-catalyzed process but also gives a far lower yield of the less valuable isobutyraldehyde by-product. The net result is improved economics vs. the cobalt process for n-butyr-aldehyde - the intermediate for 2-ethylhexanol. Although outside the U.S. this new technology has already been licensed and plants are now operating(16), no new plants were constructed in the U.S. specifically for 2EH manufacture in the seventies. However,... 

JORGE A. CAMPS has BS and MS degrees in Chemical Engineering from Louisiana State University. He worked for five years with Exxon Corporation at various U.S. and overseas locations. He joined Davy Powergas International in 1974 and is now a Principal Process Engineer of Synthesis Gas Processes. His most recent experience was as the Lead Process Engineer for a 2300-STPD methanol plant for SCT in Saudi Arabia. Mr. Camps is also an adjunct Professor of Chemical Engineering at the University of South Florida in Tampa. 

Figure 8 shows the relative energy consumptions of these processes as currently offered by Davy Powergas using the ICI LP methanol process. These energy consumptions include realistic heat and other losses achieved continuously in modern day plants. 

Nevertheless, in comparison with the cobalt technology even the first generation of LPO processes (the expression LPO being coined by BP [266]) proved successful and was promoted by a number of companies (e.g., Celanese, Union Carbide, BASF, Mitsubishi), mostly in parallel. One of the first plants for butanal production belonged to Celanese [192] (later Hoechst-Celanese), closely followed by Union Carbide/Davy Powergas/Johnson Matthey [193] and other companies. 

This has been accomplished in the double-catalysis process developed by Bayer and Lurgi. Davy Powergas, who is a Lurgi licensee for this process, built the only two plants of this type in the United States which use copper converter gas. They have kept sulfur dioxide emissions well below the guaranteed 500 ppm level. 

The El Segundo installation immediately lowered the emissions from the SOCAL refinery Claus plants to within the Los Angeles area limits of 500 ppm or less of sulfur dioxide. At Richmond, regulations are even lower—300 ppm or less. The Wellman-Lord recovery units being installed there are guaranteed by Davy Powergas to meet those emission levels. 

The Wellman-Lord process can be a significant factor in helping domestic power plants to meet the air pollution abatement requirements of the Clean Air Act of 1970. To show its applicability to the utilities industry, Davy Powergas Inc. is building a demonstration installation at the Dean H. Mitchell Station of Northern Indiana Public Service Co. in Gary, Ind. When completed, it will consist of a Wellman—Lord sulfur dioxide recovery unit connected to an Allied Chemical Co. sulfur dioxide-to-sulfur reduction process to produce elemental sulfur. Davy Powergas guarantees emissions of 200 ppm by volume or less of sulfur dioxide at this facility. 

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