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Mobara, Japan

Toyo Engineering Corporation is an engineering, procurement and construction company serving mainly the hydrocarbons and petrochemical sectors worldwide.It was established in 1961. Its various business include R&D collaboration, design, engineering, equipment procurement, construction, test operations and technical guidance in such areas as general chemicals, petrochemicals, oil refinement, natural gas, electric power, nuclear power, advanced production systems, distribution, medical facilities, biotechnology, environment at each manufacturing plant, procurement, development and sales of systems engineering and other software.Most of its revenue comes from outside Japan; it has a particular presence in China, India, Indonesia, Iran and Russia. In the fiscal year ending March 31, 2008, it had sales of 215 billion yen, a net income of 4.45 billion yen, and about a thousand employees; thanks to the late-2000s boom in the energy industry, it has more than two years backlog of orders.The Toyo Group, or Global Toyo, consists of Toyo together with 27 subsidiaries and 11 affiliates, with a total of 5500 employees; the central portion comprises about 3300 employees. Wikipedia.


Patent
Toyo Engineering Corporation | Date: 2015-11-24

There is provided a urea synthesis method having excellent reliability and productivity with the amount of oxygen used as a corrosion-resistant agent minimized without using special duplex stainless steel. In a urea synthesis apparatus having a synthesis tower, a stripper, and a condenser, general-purpose austenitic-ferritic duplex stainless steel with Cr content: 21 to 26 wt %, Ni content: 4.5 to 7.5 wt %, Mo content: 2.5 to 3.5 wt %, N content: 0.08 to 0.30 wt %, C content: 0.03 wt % or less, Si content: 1.0 wt % or less, Mn content: 2.0 wt % or less, P content: 0.04 wt % or less, and S content: 0.03 wt % is used as a urea synthesis apparatus material in at least some of parts where the urea synthesis apparatus comes into contact with a fluid having corrosiveness, and oxygen feed concentration with respect to carbon dioxide is 100 to 2,000 ppm.


Patent
Toyo Engineering Corporation | Date: 2013-11-11

An apparatus includes a first distillation apparatus for obtaining a fraction enriched in C8+ aromatics; a second distillation apparatus for obtaining a fraction enriched in C8 aromatics; an adsorption separation apparatus for obtaining an extract containing para-xylene and a raffinate containing xylene isomers; a third distillation apparatus for obtaining a fraction enriched in para-xylene; and a fourth distillation apparatus for obtaining a fraction enriched in xylene isomers. The second distillation apparatus includes a high-pressure part including a rectifying section; a low-pressure part including a stripping section; a line for directing overhead vapor of the low-pressure part to a column bottom of the high-pressure part; a line for directing a column bottom liquid of the high-pressure part to a column top of the low-pressure part; and a heat exchange structure for transferring heat from the rectifying section to the stripping section.


Patent
Toyo Engineering Corporation | Date: 2015-01-09

Significant energy saving can be achieved for a distillation column even when the distillation column has a large column temperature difference. Provided is a distillation column including a first and second columns, wherein the first column includes a part of a rectifying section or a part of a stripping section; the second column includes, if the first column includes a part of the rectifying section, the rest of the rectifying section and the whole of the stripping section, or the second column includes, if the first column includes a part of the stripping section, the rest of the stripping section and the whole of the rectifying section; and the second column constitutes a mechanical-heat-pump distillation column.


Patent
Toyo Engineering Corporation | Date: 2013-03-07

A distillation apparatus of the present invention includes high-pressure column


Patent
Toyo Engineering Corporation | Date: 2014-01-28

In a chemical plant

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