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Title: Reduce the cost of producing TAME. [Tertiary Amyl Methyl Ethers]

Abstract

The high atmospheric reactivity and resulting high ozone formation have been previously documented for C5 olefins. Other features such as low octane number and high vapor pressure limit their usefulness as gasoline blendstocks. Conversion of C[sub 5] olefins to TAME is a good way to upgrade these components into high value gasoline blendstocks. The TAME product has high octane and low vapor pressure as well as contained oxygen. The other option is to alkylate the C[sub 5] olefins. This route produces greater volume but with higher vapor pressure and lower octane value. The TAME route also achieves lower capital and operating cost than alkylation. The paper describes a process in which reactive Isoamylenes can be converted to TAME by etherification with methanol. The reactive isoamylenes include 2-methyl butene-1 and 2-methyl butene-2.

Authors:
;  [1]
  1. (CDTECH, Houston, TX (United States))
Publication Date:
OSTI Identifier:
7170657
Report Number(s):
CONF-9403125--
Resource Type:
Conference
Resource Relation:
Conference: 1994 National Petroleum Refiners Association (NPRA) annual meeting, San Antonio, TX (United States), 20-22 Mar 1994; Other Information: Paper AM-94-52
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 10 SYNTHETIC FUELS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ALKENES; CHEMICAL REACTIONS; ETHERS; PRODUCTION; FUEL ADDITIVES; METHANOL; CATALYSTS; COST ESTIMATION; FLOWSHEETS; NAPHTHA; ADDITIVES; ALCOHOLS; DIAGRAMS; DISTILLATES; HYDROCARBONS; HYDROXY COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS 020500* -- Petroleum-- Products & By-Products; 100200 -- Synthetic Fuels-- Production-- (1990-); 400201 -- Chemical & Physicochemical Properties

Citation Formats

Rock, K.L., and Gildert, G.R. Reduce the cost of producing TAME. [Tertiary Amyl Methyl Ethers]. United States: N. p., 1994. Web.
Rock, K.L., & Gildert, G.R. Reduce the cost of producing TAME. [Tertiary Amyl Methyl Ethers]. United States.
Rock, K.L., and Gildert, G.R. 1994. "Reduce the cost of producing TAME. [Tertiary Amyl Methyl Ethers]". United States. doi:.
@article{osti_7170657,
title = {Reduce the cost of producing TAME. [Tertiary Amyl Methyl Ethers]},
author = {Rock, K.L. and Gildert, G.R.},
abstractNote = {The high atmospheric reactivity and resulting high ozone formation have been previously documented for C5 olefins. Other features such as low octane number and high vapor pressure limit their usefulness as gasoline blendstocks. Conversion of C[sub 5] olefins to TAME is a good way to upgrade these components into high value gasoline blendstocks. The TAME product has high octane and low vapor pressure as well as contained oxygen. The other option is to alkylate the C[sub 5] olefins. This route produces greater volume but with higher vapor pressure and lower octane value. The TAME route also achieves lower capital and operating cost than alkylation. The paper describes a process in which reactive Isoamylenes can be converted to TAME by etherification with methanol. The reactive isoamylenes include 2-methyl butene-1 and 2-methyl butene-2.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1994,
month = 1
}

Conference:
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  • Tertiary-Amyl methyl ether (TAME) has been proposed as an additive to increase the octane of gasoline without the use of tetraethyl lead and alkyl benzenes. Experiments have been performed to examine the kinetics and mechanisms of the atmospheric removal of TAME. The kinetics of the reaction of OH with TAME was examined by using a relative rate technique in which photolysis of methyl nitrite or nitrous acid was used as the source of OH. The OH rate constant for TAME and two major products (t-amyl formate and methyl acetate) were measured and yields for ten products were determined as primarymore » products from the reaction. GC/FTIR/MS was used for the product identifications in this investigation of TAME and was also used to resurvey the product identifications previously reported in related studies of methyl tertiary butyl ether (MTBE) and ethyl tertiary butyl ether (ETBE).« less
  • The testing of strongly acidic catalysts for the conversion of a mixture of methanol and isobutanol to ethers and hydrocarbons was continued. Under standardized test conditions the catalysts tested this quarter were: phosphotungstic acid supported on zirconia (PW[sub 12]/ZrO[sub 2]), niobic acid'' (Nb[sub 2]O[sub 5]xH[sub 2]0), and an iron and manganese doped sulfate-modified zirconia (Fe/Mn/ZrO[sub 2]/SO[sub 4][sup [minus]2]). The overall activity of these catalysts followed the order of Fe/Mn/ZrO[sub 2]/SO[sub 4][sup [minus]2] > PW[sub 12]/ZrO[sub 2] > Nb[sub 2]O[sub 5]xH[sub 2]0 with the Fe/Mn/ZrO[sub 2]/SO[sub 4][sup [minus]2] catalyst approaching ZrO[sub 2]/SO[sub 4][sup [minus]2] in both activity and selectivity for isobutenemore » production. The effect of the presence of water on the reaction of methanol and isobutanol over ZrO[sub 2]/SO[sub 4][sup [minus]2] was determined to be insignificant. At 157[degrees]C and a feed of 2/1 molar ratio methanol/isobutanol, the production of isobutene was unaffected by the addition of 0.05and 0.10 parts of water to the 2/1 alcohol feed. Surface areas have been determined for Fe/Mn/ZrO[sub 2]/SO[sub 4][sup [minus]2] niobic acid, and phosphotungstic acid on silica. After calcination, the surface area for Fe/Mn/ZrO[sub 2]/SO[sub 4][sup [minus]2] was found to be 83 M2 /g. Niobic acid and phosphotungstic acid on silica (PW[sub 12]/SiO[sub 2]) were found to have surface areas of 118 and 218 m[sup 2]/g, respectively. [sup 1]H NMR was used to determine if and how much 1-butene was present as a product when isobutanol is dehydrated over sulfate-modified zirconia. It was found to be present in small amounts, [le]3% of the product stream.« less
  • The vapor pressures of methyl tert-butyl ether, ethyl tert-butyl ether, isopropyl tert-butyl ether, tert-amyl methyl ether, and tert-amyl ethyl ether were measured by ebulliometry or the static method in the pressure ranges 14--102 and 3--835 kPa (methyl tert-butyl ether), respectively. The data were correlated using the Antoine and Wagner equations. The experimental data of methyl tert-butyl ether and ethyl tert-butyl ether were compared with data available in the literature.
  • A New Paint Spray Booth System that dramatically reduces air volumes normally required for capturing and controlling paint overspray that contains either Volatile Organic Compounds (VOC) or Hazardous Air Pollutants (HAP), or both. In turn, a substantial reduction in capital equipment expenditures for air abatement systems and air make-up heaters as well as related annual operating expenses is realized.
  • Vapor-liquid equilibrium data are needed for the reformulation of gasoline to meet Federal Clear Air Act standards. Oxygenates, such as ethers and alcohols, are known to reduce Co emissions from motor vehicles, and ethers are used as a substitute for aromatics in gasoline to improve the octane rating. The vapor pressure of pure tert-amyl methyl ether (TAME) was measured together with isothermal P-x data for mixtures of pentane + TAME and pentane + tert-amyl alcohol (TAOH) at temperatures between 70 and 110 C. Also, activity coefficients at infinite dilution for the binary mixtures of TAME + TAOH were obtained inmore » the 90--120 C temperature range. The P-T-x data were correlated using the Peng-Robinson equation of state separately with the van der Waals and Wong-Sandler mixing rules.« less