Gasoline production plant

Fig. 10. Simplified flow diagram depicting the ARCO gas-to-gasoline process for a conceptual gasoline production plant (72).

Properties. Table 4 contains typical gasoline quaUty data from the New Zealand plant (67). MTG gasoline typically contains 60 vol % saturates, ie, paraffins and naphthenes 10 vol % olefins and 30 vol % aromatics. Sulfur and nitrogen levels in the gasoline are virtually lul. The MTG process produces ca 3—7 wt % durene [95-93-2] (1,2,4,5-tetra-methylbenzene) but the level is reduced to ca 2 wt % in the finished gasoline product by hydrodealkylation of the durene in a separate catalytic reactor. 

The San Juan plant can process up to 500 MMcfd of gas, and extract 40,000 bbl of EPBC liquids. EPBC liquids include ethane (E), propane (P), butanes (B), and condensate (natural gasoline) products... 

Use varied - recreational (alcohol) to industrial, gasoline Source synthetic chemistry, petroleum products, plant oils Recommended daily intake none (not essential)... 

The 100 BPD MTG project was extended recently to demonstrate a related fluid bed process for selective conversion of methanol to light olefins (MTO). The products of the MTO reaction make an excellent feed to the commercially available Mobil Olefins to Gasoline and Distillate process (MOGD) which selectively converts olefins to premium transportation fuels ( 1). A schematic of the combined processes is shown in Figure 1. Total liquid fuels production is typically greater than 90 wt% of hydrocarbon in the feed. Distillate/gasoline product ratios from the plant can be adjusted over a wide range to meet seasonal demands. 

Methane reforming units receive methane-rich gas from a cryogenic product recovery facility and subject the gas to partial oxidation. Some of the carbon dioxide content is removed and the gas recycled to the reactors. Once liquids are recovered, the stream goes to essentially conventional refining units. The plant s production is primarily transport fuels. Most of the gasoline production is currently sold to other refineries for blending with their stocks, but a portion of the product is marketed directly to consumers. 

Natural gas condensate, often called natural gasoline, from these operations can be used directly as blend-stock for gasoline production. Its value to the gas plant operation is intimately linked to the prevailing price of crude oil via the value of gasoline. LPG (propane and butane) is also linked to the prevailing price of crude oil by the energy market. 

The pyrolysis of mixed waste thermoplastics in a pilot plant of 360 ton/year at the Korea Institute of Energy Research (KIER), as shown in Figure 5.6, has an oil yield of about 82% for continuous process control over two days. The distribution of oil product is 27% gasoline product and 73% heavy oil product. Also the yield, of gas product is 10-15% and consists of about 18.1% Ci, 15.2% C2, 30.3% C3, 21.9% C4 and 14.3% C5 components. Similar results were obtained by other researchers, as shown in Table 5.1. 

AH costs are given in Deutschmark (1 DM = 0.56 US- Aug. 1997). The costs are mainly determined by the energy input and the capital costs of the production plants. For both vectors it was assumed that hydroelectricity is available at 0.05 DM/kWh and 8,300 h/a. Capital costs are calculated on a real interest rate of 8% and depreciation periods (usually 15 years power station 20 years) correspond to about 50% of the expected technical lifetime of the plants. The plant capacity was calculated to produce about 200 tons of methanol per day. It is assumed that no additional costs for a MlOO car are necessary in a series production compared to a conventional gasoline car. Further assunq)tions were mainly taken from Ref.[l]. 

Although Maui gas is very low in sulphur, the incoming gas is desulphurised as a precaution against poisoning catalysts used in the process. Following desulphurisation, water, in the form of medium pressure steam, is added and the mixture passed through reformer reactor tubes which contain a nickel catalyst. The tubes are located inside the reformer furnace where the process temperature is raised to 900°C and the reaction to form synthesis gas occurs. The synthesis gas is cooled to 35°C, compressed to 100 bar, reheated and reacted at 250-300°C over a copper/zinc catalyst to form a water-methanol mixture with about 17 percent water. The methanol product is reduced in pressure and passed to the methanol-to-gasoline (MTG) plant. 

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