Plant, coal gasification

When completed in 1996, the Weihe plant will gasify 1500 t/day of coal to produce 300,000 t/yr of ammonia, which will be used to manufacture 520,000 t/yr of urea fertilizer. This project is the eighth Texaco oil or coal gasification plant Hcensed by Chinese industry. 

In 1982, Texaco started up a 900 t/d gasifier at Southern California Edison s Cool Water faciUty. This was the first coal gasification plant to operate in an electric utihty environment, providing coal gas as fuel to a GE-frame 7E combustion turbine. The Cool Water gasification plant operated for over... 

The licensor s basis for sizing has already been discussed and agreed to or changed. For an olefin plant, the number of steam crackers of the licensor s standard size is firm. For a new process, reactor scaleup methods have been agreed to. For a coal gasification plant, gasifier size. 

Because fuel costs are high, the search is on for processes with higher thermal efficiency and for ways to improve efficiencies of existing processes. One process being emphasized for its high efficiency is the gas turbine combined cycle. The gas turbine exhaust heat makes steam in a waste heat boiler. The steam drives turbines, often used as lielper turbines. References 1, 2, and 3 treat this subject and mention alternate equipment hookups, some in conjunction with coal gasification plants. 

Two examples are an ethylene plant and a coal gasification plant. 

A typical coal gasification plant has the following flare headers ... 

The German Lurgi Company and Linde A. G. developed the Rectisol process to use methanol to sweeten natural gas. Due to the high vapor pressure of methanol this process is usually operated at temperatures of -30 to -100°F. It has been applied to the purification of gas 1 plants and in coal gasification plants, but is not used commonlv natural gas streams. 

Worldwide there are about thirty major current and planned GCC projects. Within the United States, the first GCC placed into commercial sei-vice, and operated from 1984 to 1989, was the 100-MW Cool Water coal gasification plant near Daggett, California. 

On the basis of this past work and ongoing experiments, we feel that the liquid-phase methanation process promises to become an economic, reliable, and versatile means of converting synthesis gas mixtures to high Btu gas. Chem Systems believes that this technology is a key step in the transformation of fossil feeds into pipeline gas, and we look forward to its successful application in commercial coal gasification plants. 

Downwind from coal gasification plant, Yugoslavia Max. 80.0 4... 

Few coal gasification plants have yet reached commercial development, and they still have to compete with cheaper technologies such as conventional pulverized coal-fired plants and natural gas for the production of electricity. 

The (additional) costs of C02 capture in connection with hydrogen production from natural gas or coal are mainly the costs for C02 drying and compression, as the hydrogen production process necessitates a separation of C02 and hydrogen anyway (even if the C02 is not captured). Total investments increase by about 5%-10% for coal gasification plants and 20%-35% for large steam-methane reformers (see also Chapter 10). 

Starr, F., Tzimas, E. and Peteves, S. (2007). Critical factors in the design, operation and economics of coal gasification plants the case of the flexible co-production of hydrogen and electricity. International Journal of Hydrogen Energy, 32 (10-11), 1477-1485. 

Chia, W.S. To4d, F.A. and Stupin, W.J."Sulfur Recovery in a Coal Gasification Plant," (Preprint). Presented to the Tenth Synthetic Pipeline Gas Symposium, Chicago, IL,... 

Atkins, W.T. and Takach, H.J. "Problems Associated with Controlling Sulfur Emissions from High-BTU Coal Gasification Plants, Interim Report," C.F. Braun Co., Alhambra, CA, FE-2240-13. 

In critical review of the SNG from Coal subprogram, it became evident that research efforts directed to the operations upstream and downstream of the gasifier must be substantially increased to achieve optimization of the overall coal gasification plant and to achieve maximum cost reductions. 

Source Detected in groundwater beneath a former coal gasification plant in Seattle, WA at a concentration of 180 g/L (ASTR, 1995). Acenaphthene is present in tobacco smoke, asphalt, combustion of aromatic fuels containing pyridine (quoted, Verschueren, 1983). Acenaphthene was detected in asphalt fumes at an average concentration of 18.65 ng/m (Wang et al., 2001). Present in diesel fuel and corresponding aqueous phase (distilled water) at concentrations of 100 to 600 mg/L and 4 to 14 g/L, respectively (Lee et al, 1992). 

Source Detected in groundwater at a former coal gasification plant in Seattle, WA at concentrations ranging from nondetect (method detection limit 5 pg/L) to 250 pg/L (ASTR, 1995). Based on laboratory analysis of 7 coal tar samples, acenaphthylene concentrations ranged from 260 to 18,000 ppm (EPRI, 1990). Lee et al. (1992a) equilibrated 8 coal tars with distilled water at 25 °C. The maximum concentration of acenaphthylene observed in the aqueous phase was 0.5 mg/L. 

Source Fluorene was detected in groundwater beneath a former coal gasification plant in Seattle, WA at a concentration of 140 pg/L (ASTR, 1995). Present in diesel fuel and corresponding... 

Source Detected in groundwater beneath a former coal gasification plant in Seattle, WA at a... 

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