Mitsubishi Heavy Industries Limited

Other

Mitsubishi Gas Chemical Company, Inc.

Mitsubishi Heavy Industries Engineering, Ltd.

Mitsubishi Chemical Corporation

Hiroyuki Osora

Yoshio Seiki

Kazuto Kobayashi

Atsuhiro Yukumoto

Haruaki Hirayama

Shuichi Miyamoto

Yukio Tanaka

Tetsuya Imai

Masaki Iijima

Kazuhiro Morita

Chie Kuwada

Mikiya Sakurai

Naoya Okuzumi

Akira Oguchi

Toshinobu Yasutake

Shinji Ogino

Ryota Shimura

Hideaki Nagai

Noritaka Matsumoto

Shinya Tachibana

Katsufumi Inoue

Yoshiyuki Takeuchi

Keiichi Akimoto

Motoki Numata

Hiroshi Ohira

Shuichi Kashima

Hideo Kashiwagi

Hiroaki Shimazu

Yoshi Seiki

A reforming device () according to the present invention has a compressor (), a first heat exchanger (), a desulfurization device (), a reformer (), a raw material gas branching line (L) that extracts a compressed natural gas () from a downstream side of the desulfurization device () with respect to the flow direction of the natural gas () and supplies the natural gas () to the reformer (), and a flue gas discharging line (L) that discharges a flue gas () generated in the reformer (), wherein the first heat exchanger () is provided in the flue gas discharging line (L), and the flue gas () is used as a heating medium of the compressed natural gas ().

Reforming device and method for manufacturing chemical products

Included are an ammonia synthesis column that synthesizes ammonia from a raw material gas, a discharge line that discharges a synthetic gas, a water-cooled cooler that cools the synthetic gas with a coolant, disposed in the discharge line, an ammonia separator into which a synthetic gas after cooling is introduced and which separates the ammonia gas and a liquid ammonia from each other, a raw material return line that returns a raw material gas containing the separated ammonia gas to the ammonia synthesis column side as a return raw material gas, and a compressor that compresses the return raw material gas, disposed in the raw material return line. An ammonia concentration in the return raw material gas is 5 mol % or more, and an ammonia synthesis catalyst that synthesizes the ammonia gas in the ammonia synthesis column is a ruthenium catalyst.

Ammonia synthesis system and method

A reforming device according to the present invention has a compressor, a first heat exchanger, a desulfurization device, a reformer, a raw material gas branching line that extracts a compressed natural gas from a downstream side of the desulfurization device with respect to the flow direction of the natural gas and supplies the natural gas to the reformer, and a flue gas discharging line that discharges a flue gas generated in the reformer, wherein the first heat exchanger is provided in the flue gas discharging line, and the flue gas is used as a heating medium of the compressed natural gas.

Reforming device and reforming method, and device for manufacturing chemical products equipped with reforming device and method for manufacturing chemical products

A membrane containerhas a casingincluding a fluid inletand a fluid outletand a membrane container bodyincluding a plurality of flow pathswhich is arranged along the flow direction of the treated fluid and in parallel to one another. Each of the plurality of flow pathsincludes a most upstream portionA which is connected to the fluid inlet, and a most downstream portionC which is connected to the fluid outlet. Return portionsandconfigured to reverse the flow direction of the treated fluid are provided between the most upstream portionA and the most downstream portionC. After passing through the fluid inlet, the treated fluid flows from the most upstream portionA down to the most downstream portionC via the return portionsand the upper return portion

Membrane container used in dehydrator

A dehydration system has improved membrane performance. The dehydration system includes a dehydrating apparatuscomprising, in a dehydrating apparatus body, a water separation membrane module in which a water separation membrane having at least one flow path extending in the up and down direction to cause a liquidto pass through is provided with a liquid inlet at the bottom thereof and a liquid outlet at the top thereof; and a shelldefined by the outer surface of the water separation membrane module and the inner wall of the dehydrating apparatus body, wherein water in the liquid permeates the water separation membrane while the liquid rises in the water separation membrane, and moves in the shell, whereby the liquid is dehydrated; a pressure reducing devicefor reducing the pressure of the shell; a pressure device for pressurizing the liquid before the liquid is fed to the water separation membrane module; and a heating device for heating the pressurized liquid.

Dehydration system and dehydration method

The present invention includes a dehydration method comprising the steps of providing a distilled process-target fluid to a water separation membrane device via a heat exchanger; separating the process-target fluid into a dehydrated product and water by using the water separation membrane device; detecting a temperature of any one of the water separation membrane device and the process-target fluid supplied to the water separation membrane device by using a temperature monitoring device; and controlling the temperature of the process-target fluid so that the temperature of the distilled process-target fluid being maintained at a temperature higher than the condensation temperature of the distillate by 5 to 10&#xb0; C. by using a temperature adjustment device provided in the water separation membrane device.

Dehydration method

A dehydrating system using multiple water separation membranes aims to prevent damage to the water separation membrane units and also to take appropriate measures against decrease in water permeation rate of the water separation membranes. Provided is a dehydrating system () for removing water from a target fluid, including at least two water separation membrane units () connected in series in a flow direction of the target fluid; two or more heat exchangers () respectively provided in front of the water separation membrane units (), each of the heat exchangers () raising a temperature of the target fluid to a temperature which is lower than a boiling point of the target fluid but close to the boiling point.

Dehydrating system and dehydrating method

The present invention includes: a water separation membrane devicethat separates a process-target fluid into a dehydrated product and water; and a temperature monitoring devicefor the water separation membrane device. The temperature monitoring devicedetects a temperature. Further, a temperature adjustment deviceis provided in a previous stage of the water separation membrane device. The temperature adjustment devicecontrols a temperature of the process-target fluid on the basis of the temperature detected by the temperature adjustment deviceto thereby optimize an amount of water permeation in a separation process in the water separation membrane device

Provided is a dehydrator that requires no excessively large apparatus structure and achieves cost-saving while maintaining suction efficiency at a desired level by use of suction means. A dehydratorfor separating water from a target liquidincludes at least two water separation membrane units 1andwhich are provided in series in a flow direction of the target liquid. The water separation membrane uniton an upstream side out of the water separation membrane unitsandis connected to suction meansfor sucking a gas phase containing water through one condenser, and the one condensercondenses water in the gas phase and thereby separates the water. The gas phase sucked by the suction meansfrom the one condenseris transferred to at least one downstream condenserprovided downstream of the one condenser, and the downstream condensercondenses water in the gas phase and thereby separates the water. The water separation membrane uniton a downstream side of the water separation membrane unitis connected to a steam ejector, and the condenserfor condensing water in a gas phase passed through the steam ejectorcondenses water and thereby separates the water.

Dehydrator

There is provided a method for transporting a fluid, in which even if the fluid is transported for a long period of time, dehydration after transportation is not needed, and the transported fluid can be used immediately after transportation. Specifically, there is provided a method for transporting a fluid, comprising steps of: dehydrating some of the transportation fluid during transportation by using a dehydration system comprising a separation membrane through which water permeates, and returning the dehydrated fluid to the transportation fluid so as to keep water content in the transportation fluid in a fixed range. In one embodiment, the transportation fluid is a liquid, and the dehydration system comprises a heater for heating the liquid to a temperature in a range in which the liquid does not boil, and a membrane separation apparatus for dehydrating the heated liquid, wherein the membrane separation apparatus is a PV method apparatus comprising a primary side chamber extending in an up and down direction to introduce the liquid from a lower portion thereof and discharge it from an upper portion thereof, a separation membrane in contact with the primary side chamber to allow water in the liquid to permeate through as a gas, and a secondary side chamber being located on the opposite side to the primary side chamber with the separation membrane held therebetween and being under a pressure lower than that in the primary side chamber.

Method for transporting fluid

A dehydrating system is designed to maintain the availability of a plant having the dehydrating system using a water separation membrane by allowing a water separation membrane unit to be replaced while the plant is in operation. The dehydrating system comprises at least two water separation membrane units in use arranged parallel to the direction of flow of a fluid to be processed, is configured so that at least one spare water separation membrane unit can be installed parallel to the direction of flow of the fluid to be processed with respect to the at least two water separation membrane units, having monitoring devices for the product fluid to be taken out, and maintains the properties of the product fluid by operating the spare water separation membrane unit depending on the properties of the product fluid monitored by the monitoring devices.

Dehydrating system and method for control of spare membrane unit

There is provided a catalyst for dimethyl carbonate synthesis which has a high conversion rate under the supercritical condition of COand can be handled easily. The catalyst for dimethyl carbonate is obtained by loading SOor POon a carrier composed of a compound having a solid acid site, and is used to produce dimethyl carbonate from acetone dimethyl carbonate and COin a supercritical state. The component having a solid acid site is preferably one or more of ZrO, AlO, and TiO.

Method for dimethyl carbonate synthesis

Catalyst for dimethyl carbonate synthesis

The present invention provides a method and apparatus for producing dimethyl carbonate, wherein carbon dioxide is recovered from combustion exhaust gas of a steam reformerand a boiler; and some of the recovered carbon dioxide is used for methanol synthesis as a raw material for the steam reformer, and the remaining carbon dioxide is allowed to react with some of the yielded methanol to synthesize dimethyl carbonate. According to the present invention, CO, which has conventionally been discharged, is returned to the steam reformer and is used effectively to produce DMC, and also devices for producing methanol and DMC can be simplified.

Method and device for manufacturing dimethyl carbonate

A separation system has a distillation column, an overhead vapor supply pipe connected to the top of the distillation column, first and second branch pipes branching from the overhead vapor supply pipe and a superheater connected to the first branch pipe. A separator downstream of the superheater has a separation membrane for separating overhead vapor from the top of the distillation column into permeable vapor and nonpermeable vapor by allowing only a selected portion of the overhead vapor to permeate the separation membrane. A reflux unit has a condenser connected to the second branch pipe for cooling a portion of the overhead vapor into a liquid and a gas-liquid separator for separating gas from the liquid produced by cooling and returning the separated liquid into the top of the distillation column.

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Hiroshima, Japan

Hiroyuki Osora