Novel technology for the synthesis of dimethyl ether from syngas

Brown, Dennis; Bhatt, B. L.; Hsiung, Thomas H.; Lewnard, J.J.; Waller, Francis J.

doi:10.1016/0920-5861(91)80055-e

Cited by 131 publications

(72 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is borne out by the simulation shown in Figure 6: MEP decreases with increasing CO 2 concentration in the syngas feed, accompanied by an increase in the water concentration. This agrees well with the experimental observation that removing CO 2 in the syngas feed leads to higher productivity [2]. CO 2 is an undesirable component in the feed because, like H 2 , it adversely affects the synergy by building up water, but unlike H 2 , CO 2 does not contribute to methanol synthesis under syngas-to-DME conditions.…”

Section: Figuresupporting

confidence: 80%

“…In fact, the downstream separation in the single-step process is more complex, and possibly more costly, compared to the two-step process. This is due to CO 2 formation in the DME reactor (Reaction 2) and the difficulty associated with separating CO 2 . The third part of this report discusses, qualitatively, how this CO 2 problem may affect the economics of the single-step process, mainly the trade-off between reactor productivity and CO 2 formation.…”

Section: Methanol Synthesis Reactionmentioning

confidence: 99%

“…Not only does this affect methanol synthesis due to the poor availability of one of its reactants, it also quickly brings the system to equilibrium. (Note that the approach to methanol synthesis equilibrium is defined by f me /(f H2 ) 2 /f CO /K m , where f stands for fugacity. )…”

Section: Figurementioning

confidence: 99%

“…Experimental work has been conducted to study the performance of the reaction system as a function of various reaction parameters such as syngas composition (for example, H 2 :CO ratio, CO 2 and H 2 O content), catalyst materials and composition, space velocity, pressure, and temperature [2,[12][13][14][15]. Noticeably absent from the prior work is a fundamental and systematic analysis of the reaction system.…”

Section: Methanol Synthesis Reactionmentioning

confidence: 99%

“…Liquid Phase Methanol (LPMEOH ) has been demonstrated on a large scale at Tennessee Eastman [1]. Liquid Phase Dimethyl Ether (LPDME) is the next process in this progression [2,3]. Dimethyl ether (DME) has been identified as a potential diesel, cooking and power plant fuel [4][5][6], and can serve as a building block for liquid oxygenated compounds with high cetane numbers [7].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Kinetic Understanding of the Syngas-to-Dme Reaction System and Its Implications to Process and Economics

Peng¹

2002

View full text Add to dashboard Cite

Section: Figuresupporting

confidence: 80%

Section: Methanol Synthesis Reactionmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Methanol Synthesis Reactionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetic Understanding of the Syngas-to-Dme Reaction System and Its Implications to Process and Economics

Peng¹

2002

View full text Add to dashboard Cite

Feedstocks, Coal Chemicals

Worsham¹

2000

Kirk-Othmer Encyclopedia of Chemical Technology

View full text Add to dashboard Cite

Worsham, Paul R. (Eastman Chemical Company). Many basic chemicals currently produced from petroleum can be produced from coal using demonstrated technology, including coal carbonization, direct liquefaction, and coal gasification. A broad range of chemicals is available by gasification of coal to make synthesis gas and subsequent transformation with existing processes to methanol, ammonia, acetyl derivatives, and Fischer‐ Tropsch products. Other useful chemical products can be isolated from the liquid by‐products of coke production and gasification. These products include pitch, creosote, naphthalene, and cresylic acids. Some of these same products are recovered from modern synfuel plants producing liquid transportation fuels and synthetic natural gas. Another group of chemicals can be produced from coal‐derived acetylene. The choice of feedstock for a chemical process depends on complex technical, economic, environmental, and political factors. Except in special situations, the manufacture of most chemicals from coal is not competitive with petroleum and natural gas at feedstock prices prevailing in the early 1990s. Special situations typically are the result of the concurrence of several favorable factors such as location of producing facilities close to coal supplies which match the needs of the desired operation, coupled with the availability of modern conversion processes which can take advantage of coal composition to generate high value products with minimal conversion to the hydrogen/carbon ratio of competing feedstocks.

show abstract

Feedstocks, Coal Chemicals

Worsham

2010

Kirk-Othmer Encyclopedia of Chemical Technology

View full text Add to dashboard Cite

Coal is used in industry as both a fuel and as a source of chemicals. Coal was once the principal feedstock for chemical production but in the 1950s it became more economical to obtain chemicals from petroleum and gas. However with the rising prices of oil and natural gas and the questions of supply, coal again may become a principal feedstock for chemical production. The discovery that useful chemicals from coal tar provided the foundation upon which the modern chemical industry is built. Coal tar is produced as a coproduct during coal gasification.Although small amounts of liquids are produced during coal pyrolysis, significant amounts of coal‐derived liquids did not become available until after the discovery of coal hydrogenation. A variety of chemicals can be produced from synthesis gas. Synthesis gas can be produced by coal gasification, among other processes. Coal gasifiers fall into three types, fixed, fluidized, and entrained bed. The Fischer‐Tropsch process is an effective alternative to direct liquefaction of coal. Feedstocks obtained from coal are discussed in this article and include ammonia, hydrogen, methanol, dimethyl ether, acetic acid and anhydride, and carbide chemicals. Some examples of companies using coal technology are given. Economics and environmental concerns are also discussed.

show abstract

Novel technology for the synthesis of dimethyl ether from syngas

Cited by 131 publications

References 5 publications

Kinetic Understanding of the Syngas-to-Dme Reaction System and Its Implications to Process and Economics

Kinetic Understanding of the Syngas-to-Dme Reaction System and Its Implications to Process and Economics

Feedstocks, Coal Chemicals

Feedstocks, Coal Chemicals

Contact Info

Product

Resources

About