Showing posts with label METHANOL. Show all posts
Showing posts with label METHANOL. Show all posts

Tuesday, June 23, 2015

Methanol Magic, LLC Methanol Plant Feasibility Study

CATEGORY: METHANOL
Methanol Magic, LLC Methanol Plant Feasibility Study


Type
Thesis
Author
Marco Barrera
Author
Adrian Barry
URL
Date
2015
University
University of Texas at Austin
Abstract
Methanol Magic, LLC explored the feasibility of a shale gas methanol plant – producing Grade AA methanol – built near the Bakken shale play and drawing from four gas wells, each with different hydrocarbon compositions. The projected life of the plant was 10 years, lasting from January 1, 2017, with a 2-year construction and 330 day/year operating time. The tax rate is 40% with a MACRS depreciation of 7 years. The process – from purchasing the shale gas to methanol production – can be separated into three units: natural gas processing, synthesis gas (syngas), and methanol production.
Process modeling and economics analysis were done in ASPEN and Excel. In the current market climate, the proposed methanol process has 0% chance of making a profit, with a Net Present Value (NPV) of -$223 MM ± $40 MM and an Internal Rate of Return (IRR) of 15.0% ± 1.8%. There is a 90% probability of having 12.05-18.02% IRR and methanol price is the determining factor of the final NPV. To meet the Internal Rate of Return (IRR) of 25%, a break-even analysis indicated needing a methanol output increase of 29% (165,811,670 gal/yr to 213,251,194 gal/yr), a wellhead price decrease of 57% ($3.03/ 1000 SCF to $1.30/ 1000 SCF), or a methanol sale price (year 2017) increase of 25% ($1.79/gal to $2.40/gal). Process downsizing via Fixed Capital Investment (FCI) alone cannot break even at 25% IRR, even without considering the loss in methanol production. Thus, Methanol Magic, LLC recommends against the construction of the proposed methanol plant, although the economics might be sustainable with a lower IRR hurdle.
# of Pages
99

Tuesday, April 7, 2015

In Situ Synthesis and Characterization of Polyethyleneimine-Modified Carbon Nanotubes Supported PtRu Electrocatalyst for Methanol Oxidation



Type
Journal Article
Author
Xi Geng
Author
Jieying Jing
URL
Volume
2015
Pages
e296589
Publication
Journal of Nanomaterials
Date
2015/01/19
Abstract

Wednesday, March 18, 2015

Conversion of methanol to aromatics in fluidized bed reactor



Type
Journal Article
Author
Tong Wang
Author
Xiaoping Tang
URL
Series
Catalytic Materials And Catalysis For Low Carbon Technology
Volume
233
Pages
8-13
Publication
Catalysis Today
Date
September 15, 2014
Abstract
Researchers converted methanol to aromatics (MTA) using a fresh or a spent Zn/ZSM-5 catalyst in single stage fluidized bed (SSFB) and two stage fluidized bed (TSFB). Sampling at different stages of TSFB and operation in the temperature range of 250, 275, 300, 325, 350, 380 and 475 °C revealed the consecutive reaction mode from methanol to DME, C1–C4 hydrocarbons, C5+ nonaromatics to aromatics.
High weight ratio of para-xylene (PX) in xylene in wide temperature range indicated PX to be the primary product of MTA. Other xylenes are produced by the iosmerization of PX. Other aromatics such as benzene, toluene and trimethylbenzene are produced by the dealkylation, alkylation or disproportionation of xylene. Researchers observed the adoption of TSFB reactor to be effective in increasing the yield of aromatics, compared to that using SSFB, due to the inhibition of backmixing of gases. Combination of TSFB and highly active catalyst with strong acids was effective to get high yield of aromatics under high space velocity of methanol.

Friday, December 5, 2014

Proven autothermal reforming technology for modern large-scale methanol plants

CATEGORY: METHANOL
Proven autothermal reforming technology for modern large-scale methanol plants


Type
Conference Paper
Author
PER JUUL DAHL
Author
THOMAS S. CHRISTENSEN
URL
Date
2014
Conference Name
Nitrogen + Syngas 2014 International Conference & Exhibition
Abstract
As global demand for methanol continues to rise, improvements in methanol plant capacity has become increasingly urgent. Capacity expansion takes advantage of economy of scale, leading to significant reductions in costs. The modern-day large-scale methanol plant produces twice as much as the typical capacity at the beginning of the millennium.
Specialized technology, both for syngas generation and for methanol synthesis, is essential in order to achieve world-class production capacities. Topsøe has invested significant efforts in developing such technologies, from which one of the results is the implementation of stand-alone autothermal reforming (ATR) for syngas generation. With its low steam-to-carbon ratio, the unique stand-alone ATR technology can lower costs considerably. A combination of ATR technology with an optimized Topsøe methanol reactor layout and high-performance Topsøe methanol synthesis catalyst leads to optimal feedstock utilization and maximum operation efficiency.

This paper describes Topsøe’s industrial operating experiences within autothermal reforming, as well as process conditions, catalysts, and design requirements to ensure high availability and reliability in large-scale methanol plants.