Central Glass Company, Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Other

Nippon Zeon Company, Ltd.

Nagaoka University of Technology

Mitsubishi Heavy Industries Limited

Fuyuhiko Sakyu

Satoru Okamoto

Yasuo Hibino

Satoshi Yoshikawa

Yoshio Nishiguchi

Naoto Takada

Hideaki Imura

Yoshihiko Gotoh

Ryouichi Tamai

Kenji Ueda

Yoshinori Akamatsu

Masatomi Kanai

Naoki Kobayashi

Takeo Komata

Takamasa Kitamoto

Kanako Osafune

Yasushi Hasegawa

Koji Ueda

Michitaka Ootani

Masamune Okamoto

Takayuki Nishimiya

Ryosuke Suemitsu

Kazuki Wajima

Masahiko Tani

Ryoichi Tamai

Shigeharu Kamado

Mikio Ujiie

Takuya Tonomura

Fumihiro Kawagoe

Hayato Okumura

Daisuke Yamagata

One of the problems is to provide a solvent composition which has a little adverse effect on the global environment and has excellent stability when a compound having a perfluoropolyether (PFPE) group is in a solution state. In an embodiment, the problem is solved by providing a solvent composition for dissolving a compound having a perfluoropolyether (PFPE) group includes Z-1,2-dichloro-3,3,3-trifluoropropene (1223xd(Z)) as a main component.

Solvent composition

It is an object of the present invention to provide a heat pump that can use, as a refrigerant, a substance with which a geometric isomer exists, and a method for designing the same. The present invention is a method for designing a heat pump () whose closed circuit configured by connecting a compressor (), a condenser (), an expansion valve (), and an evaporator () in this order is filled with a refrigerant containing a refrigerant substance with which a geometric isomer may exist, the method including obtaining an upper limit of stable temperature at which isomerization of the refrigerant substance does not proceed, and setting an upper limit usage temperature of the heat pump () so as not to exceed the upper limit of the stable temperature.

Heat pump and method for designing the same

A storage method of HCFO-1233zd (Z) according to an embodiment of the present invention, includes using a storage container having a liquid-contact portion thereof. The liquid-contact portion is formed of a material selected from the group consisting of epoxy-phenolic resin, phenolic resin, phenolic-butyral resin, stainless steel, iron phosphate, zinc phosphate and glass.

Storage container and storage method of Z-1-chloro-3,3,3-trifluoropropene

A heat pump device and an organic Rankine cycle device that are capable of maintaining a stable thermal cycle even when an HFO or HCFO is used as the refrigerant. The refrigerant circulation device uses a refrigerant, wherein the refrigerant includes a hydrofluoroolefin or hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, and a reaction suppression unit which suppresses an isomerization reaction of the refrigerant is provided within the refrigerant circulation circuit.

Refrigerant circulation device, method for circulating refrigerant and method for suppressing isomerization

The present invention provides a heat pump device and an organic Rankine cycle device that are capable of maintaining a stable thermal cycle even when an HFO is used as the refrigerant in an environment in which the operating temperature reaches a high temperature. The refrigerant circulation device is filled with a refrigerant comprising a hydrofluoroolefin or hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, and has a region in the refrigerant circulation circuit where the operating temperature of the refrigerant reaches 175&#xb0; C. or higher, wherein an acid suppression unit which suppresses any increase in the acid concentration in the refrigerant is provided in the region where the operating temperature of the refrigerant can reach 175&#xb0; C. or higher, and the acid suppression unit contains an acid suppression material comprising at least two materials selected from the group consisting of copper, iron, aluminum, SUS, nickel, titanium, metallic silicon, silicon steel, tin, magnesium and zinc as the main components.

Refrigerant circulation device, method for circulating refrigerant and acid suppression method

A method for producing 1-chloro-3,3,3-trifluoropropene efficiently from an intermediate product having a low reactivity is provided. A method for producing trans-1-chloro-3,3,3-trifluoropropene comprising reacting a halogenated hydrocarbon compound having 3 carbon atoms represented by Formula (1) shown below in a gas phase with hydrogen fluoride in the presence of chlorine is provided. CHClF(1) wherein X is 2 or 3; and when X=2, Y is an integer from 1 to 4, Z is an integer from 0 to 3, and Y+Z=4; and when X=3, Y is an integer from 1 to 5, Z is an integer from 0 to 4, and Y+Z=5; provided that Formula (1) shown above represents a halogenated hydrocarbon compound having 3 carbon atoms excluding trans-1-chloro-3,3,3-trifluoropropene.

Method for producing trans-1-chloro-3,3,3-trifluoropropene

A method for producing 1234Z from 1234E while generation of 245fa as a byproduct is suppressed. The method for producing cis-1,3,3,3-tetrafluoropropene includes putting trans-1,3,3,3-tetrafluoropropene into contact with a catalyst. The trans-1,3,3,3-tetrafluoropropene is put into contact with the catalyst at a reaction temperature of higher than or equal to 200&#xb0; C. and lower than or equal to 550&#xb0; C. for a contact time of longer than or equal to 0.01 seconds and shorter than or equal to 500 seconds.

Method for producing cis-1,3,3,3-tetrafluoropropene

Provided is a method for causing a dehydrofluorination reaction of 1,1,1,3,3-pentafluoropropane in the gas phase and in the presence of a catalyst thereby producing 1,3,3,3-tetrafluoropropene. In this method, the reaction is carried out at a pressure inside the reaction system of from 0.001 to 90 kPa (absolute pressure) at a reaction temperature ranging from 250 to 600&#xb0; C.

Method for producing 1,3,3,3-tetrafluoropropene

A method for producing a desired isomer of 1-chloro-3,3,3-trifluoro-1-propene or a desired isomer of 1,3,3,3-tetrafluoropropene at a high conversion ratio with no use of a solid catalyst is provided. Since no solid catalyst is used, a desired isomer of 1-chloro-3,3,3-trifluoro-1-propene and a desired isomer of 1,3,3,3-tetrafluoropropene can be stably obtained with no undesired possibility that the solid catalyst is deteriorated due to coking or the like caused as a result of long-time use thereof.

Method for producing 1-chloro-3,3,3-trifluoro-1-propene and 1,3,3,3-tetrafluoropropene

A separation method of 1-chloro-3,3,3-tetraluofopropene and hydrogen fluoride according to the present invention includes reducing the hydrogen chloride content of a mixture containing hydrogen chloride, 1-chloro-3,3,3-tetrafluoropropene and hydrogen fluoride, thereby causing phase separation of the mixture so as to obtain an upper phase predominantly containing the hydrogen fluoride and a lower phase predominantly containing the 1-chloro-3,3,3-tetrafluoropropene. This separation method is industrially economically advantageous since the 1-chloro-3,3,3-tetraluofopropene and the hydrogen fluoride can be separated rapidly by simple operation.

Method for separating 1-chloro-3,3,3-trifluoropropene and hydrogen fluoride, and method for producing 1-chloro-3,3,3-trifluoropropene by using same

Provided is a method for producing trans-1-chloro-3,3,3-trifluoropropene usable as a raw material for a foaming agent for a hard polyurethane foam, a solvent, a cleaning agent, a cooling medium, a working fluid, a propellant, a fluorinated resin, etc., the method involving a step of bringing cis-1-chloro-3,3,3-trifluoropropene into contact with a catalyst, wherein the catalyst includes a fluorinated metal oxide or a metal fluoride each produced by applying a fluorination treatment to a metal oxide containing one kind or two or more kinds of metals and containing aluminum atoms that make up 50 at. % or more of metal atoms to thereby substitute some or all of oxygen atoms in the metal oxide with fluorine atom(s), wherein the fluorinated metal oxide or the metal fluoride is a compound produced through a drying treatment at 400 to 600&#xb0; C.

The present invention has an object of providing a method for producing 1,2-dichloro-3,3,3-trifluoropropene by a vapor-phase reaction easily and in an industrial scale. A method for producing 1,2-dichloro-3,3,3-trifluoropropene of the present invention includes putting 1,2-dichloro-1-halogeno-3,3,3-trifluoropropane with an activated carbon catalyst in a vapor phase. According to the present invention, 1,2-dichloro-3,3,3-trifluoropropene is produced in an industrial scale at a high yield by use of 1,2-dichloro-1-halogeno-3,3,3-trifluoropropane, which is available at low cost, as a material.

Method for producing 1,2-dichloro-3,3,3-trifluoropropene

A method for producing 1,2-dichloro-3,3,3-trifluoropropene of the present invention includes reacting 1,2-dichloro-1-halogeno-3,3,3-trifluoropropane with a base in a liquid phase; and extracting generated 1,2-dichloro-3,3,3-trifluoropropene to the outside of a reaction system to recover while the reaction is continued. According to the present invention, 1,2-dichloro-3,3,3-trifluoropropene is obtained at a high yield by a simple method. Thus, 1,2-dichloro-3,3,3-trifluoropropene is produced in an industrial scale.

A production method of cis-1,3,3,3-tetrafluoropropene according to the present invention includes the steps of: subjecting 1,1,1,3,3-pentafluoropropane to dehydrofluorination to form a reaction mixture (A) containing cis-1,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and unreacted 1,1,1,3,3-pentafluoropropane; distilling the reaction mixture (A) to separate the trans-1,3,3,3-tetrafluoropropene from the reaction mixture (A) and collect a reaction mixture (B) containing the cis-1,3,3,3-tetrafluoropropene and the 1,1,1,3,3-pentafluoropropane; and reacting the reaction mixture (B) with a base and thereby obtaining the cis-1,3,3,3-tetrafluoropropene from the reaction mixture (B). This production method enables efficient production of high-purity cis-1,3,3,3-tetrafluoropropene and thus has industrial advantages.

According to the first characteristic of the present invention, there is provided a production process for 1,3,3,3-tetrafluoropropene including: the first step of reacting 1,1,1,3,3-pentachloropropane with hydrogen fluoride thereby obtaining 1-chloro-3,3,3-trifluoropropene; and the second step of reacting 1-chloro-3,3,3-trifluoropropene obtained in the first step with hydrogen fluoride in a gaseous phase in the presence of a fluorination catalyst. According to the second characteristic of the present invention, there is provided a dehydration process including bringing 1,3,3,3-tetrafluoropropene containing at least water into contact with zeolite.

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Saitama, Japan

Fuyuhiko Sakyu