Toyo Engineering Corporation

Mobara, Japan

Toyo Engineering Corporation

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.

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Patent
Toyo Engineering Corporation | Date: 2017-01-25

The duty of internal heat exchange can be flexibly adjusted without impairing energy saving performance of a HIDiC. A method of adjusting the duty of heat exchange in a heat exchange structure of a HIDiC includes totally condensing a portion of the vapor fed to a heat exchange structure in a heat exchange structure; and providing a liquid control valve downstream of the heat exchange structure on the first line, without providing a control valve on a vapor-flowing part of first and second lines of the HIDiC, and adjusting a flow rate of a portion of the compressor outlet vapor flowing into the heat exchange structure by using the control valve, while compensating for a pressure loss needed for the control valve by using a liquid head of a condensate, and/or by using pressurization by a pump.


Patent
Toyo Engineering Corporation | Date: 2017-08-02

The present invention relates to a method for producing a high-purity aqueous urea solution, utilizing a urea production process at least including a urea synthesis step of synthesizing urea from a raw material feed to produce a urea synthesis liquid, and a urea purification step of purifying the urea synthesis liquid to produce an aqueous urea solution with high urea concentration. The present invention includes a urea crystallization step of separating a part of the urea synthesis liquid and/or a part of the aqueous urea solution and crystallizing urea contained in the separated urea synthesis liquid and/or aqueous urea solution to produce solid crystal urea, and a mixing step of mixing the crystal urea with water to produce a high-purity aqueous urea solution. A high-purity aqueous urea solution to be produced is an aqueous urea solution with high purity suitable as a reducing agent for SCR.


Patent
Toyo Engineering Corporation | Date: 2017-08-02

The duty of internal heat exchange can be flexibly adjusted without impairing energy saving performance of a HIDiC. There is provided a method of adjusting the duty of heat exchange in a heat exchange structure of a HIDiC including: higher pressure (HP) and lower pressure (LP) columns; a compressor for pressurizing overhead vapor of the LP column; a first line for directing a portion of a compressor outlet vapor from the compressor to a column bottom of the HP column via the heat exchange structure (which transfers heat from the portion of the compressor outlet vapor to the LP column); a second line for directing the rest of the compressor outlet vapor from the compressor to the column bottom of the HP column, this line bypassing the heat exchange structure; and a third line for directing a column bottom liquid of the HP column to a column top of the LP column, the method including; totally condensing the portion of the vapor fed to the heat exchange structure in the heat exchange structure; and providing a liquid control valve downstream of the heat exchange structure on the first line, without providing a control valve on a vapor-flowing part of the first and second lines, and adjusting a flow rate of the portion of the compressor outlet vapor flowing into the heat exchange structure by using the control valve, while compensating for a pressure loss needed for the control valve by using a liquid head of a condensate, and/or by using pressurization by a pump.


Patent
Toyo Engineering Corporation | Date: 2015-06-23

The present invention provides a solar heat collecting device having good heat collection efficiency. A uniaxial solar-tracking reflective mirror group is arranged such that each longitudinal axis thereof faces the same direction. A first biaxial solar-tracking reflective mirror group and a second biaxial solar-tracking reflective mirror group are arranged lined up in a direction orthogonal to the longitudinal axis direction of uniaxial solar-tracking reflective mirrors. The uniaxial solar-tracking reflective mirror group is arranged so as to be sandwiched on both sides by the first biaxial solar-tracking reflective mirror group and the second biaxial solar-tracking reflective mirror group. Each mirror group sends solar heat received during uniaxial or biaxial tracking in accordance with the position of the sun, to a heat collecting device.


Patent
Toyo Engineering Corporation | Date: 2017-06-07

A solar heat collecting device with high heat collecting efficiency is provided. A single-axial solar tracking type reflection mirror group 20 is disposed with each long axis facing in the same direction. A first dual-axial solar tracking type reflection mirror group 30 and a second dual-axial solar tracking type reflection mirror group 40 are disposed side by side in a direction orthogonal to the long-axis direction of a single-axial solar tracking type reflection mirror 21. The single-axial solar tracking type reflection mirror group 20 is disposed sandwiched between the first dual-axial solar tracking type reflection mirror group 30 and the second dual-axial solar tracking type reflection mirror group 40. Each mirror group sends to a heat collecting unit 10, the solar heat received while tracking the position of the sun single-axially or dual-axially.


Patent
Nittetsu Mining Co., Sumitomo Corporation and Toyo Engineering Corporation | Date: 2016-10-26

The present invention provides a method for producing lithium carbonate, that can shorten the time required in the production of lithium carbonate and has excellent maintenance property and production efficiency without forming fixed matters that require complicated procedures to remove in a reaction apparatus.


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: 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: 2015-07-22

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 (A1) and second columns (A2), wherein the first column (A1) 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 (A3) and the whole of the stripping section (A4), or the second column includes, if the first column includes a part ofthe stripping section, the rest ofthe stripping section and the whole ofthe rectifying section; and the second column constitutes a mechanical-heat-pump distillation column (A6, A8).


Patent
Toyo Engineering Corporation | Date: 2015-05-27

In a distillation apparatus including a plurality of distillation columns, total energy consumption is reduced while controlling a cost increase. Provided is a distillation apparatus including a first distillation column and one or more second distillation columns, wherein the first distillation column includes: a higher-pressure part including the whole or a part of a rectifying section and configured to perform gas-liquid contact at a relatively high pressure; a lower-pressure part including the whole or a part of a stripping section and configured to perform gas-liquid contact at a relatively low pressure; a vapor line, including a pressurizing means, for directing a vapor discharged from a column top of the lower-pressure part to a column bottom of the higher-pressure part; and a liquid line for directing a liquid discharged from the column bottom of the higher-pressure part to the column top of the lower-pressure part, and the distillation apparatus includes: a first heat exchange structure configured to transfer heat from the rectifying section of the first distillation column to at least one of the one or more second distillation columns by heat exchange; and a second heat exchange structure configured to transfer heat from at least one of the one or more second distillation columns to the stripping section of the first distillation column by heat exchange.

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