Central Glass Company, Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Mitsubishi Heavy Industries Limited

Yoshio Nishiguchi

Satoru Okamoto

Fuyuhiko Sakyu

Masatomi Kanai

Naoki Kobayashi

Kenji Ueda

Naoto Takada

Hideaki Imura

Yoshinori Akamatsu

Yasuo Hibino

Masamune Okamoto

Satoshi Yoshikawa

Masahiko Tani

Koji Ueda

Kei Matsunaga

Noriyuki Matsukura

Ryosuke Suemitsu

Kohei Sumida

Norihisa Horaguchi

Tatsuya Hayasaka

Takuya Tonomura

Minako Oomura

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 manufacturing method of 1-chloro-3,3,3-trifluoropropene (1233zd) is provided. This manufacturing method includes a reaction in which a halogenated hydrocarbon compound having a carbon number of 3 and represented by a general formula (1) is heated:CFCl&#x2014;CH&#x2014;CHFCl&#x2003;&#x2003;(1) In the formula, a is an integer from 0 to 2, b is 1 or 2 when a=0, b is 0 or 1 when a=1, and b is 0 when a=2.

Method for producing 1,3-dichloro-3,3-difluoropropene

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

An object of the present invention is to provide a refrigerant circulation device and method that can suppress acid generation caused by decomposition of a refrigerant containing an HFO or HCFO. The refrigerant circulation device has a compressor, a condenser, expansion valves and an evaporator connected by a main pipe to form a refrigerant circulation circuit through which a refrigerant is circulated, the refrigerant circulation circuit being filled with a refrigerant containing a hydrofluoroolefin or a hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, wherein the refrigerant circulation device includes a drive that drives the compressor via a speed increaser, and a drive cooling unit that cools the drive with the refrigerant condensed in the condenser, and a desiccant that can trap moisture is disposed in the evaporator or the drive cooling unit.

Refrigerant circulation device, refrigerant circulation method, refrigerant filling method, and method for operating refrigerant circulation device

A heat transmission method using a high-temperature heat pump system accommodating a heat transmission composition includes the step of evaporating the heat transmission composition, the step of compressing the heat transmission composition, the step of condensing the heat transmission composition, and the step of decreasing the pressure of the heat transmission composition at a temperature of 70&#xb0; C. or higher, which are performed sequentially. The heat transmission composition contains cis-1,3,3,3-tetrafluoropropene at a mass ratio of 95.0% by mass or more and 99.9% by mass or less, and contains trans-1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene at a mass ratio of 0.1% by mass or more and 5.0% by mass or less; and the heat transmission composition has a condensation temperature of 70&#xb0; C. or higher.

Heat transmission method and high-temperature heat pump device

A heat transmission method using a heat pump system according to the present invention uses a heat transmission medium containing at least one compound represented by general formula (1). In the formula, Ris a CHFgroup, m is an integer of 0 or more and 3 or less, R, Rand Rare each independently a fluorine atom, a chlorine atom, a bromine atom, an iodine atom or a hydrogen atom, and at least one fluorine atom is contained in a molecule. The heat transmission method includes (A) step of gasifying the heat transmission medium; (B) step of compressing the heat transmission medium into a supercritical state; (C) step of causing heat exchange between the heat transmission medium in the supercritical state and a medium to be heated; and (D) step of decreasing the pressure of the heat transmission medium.

An azeotropic-like composition containing 2-chloro-1,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene is provided. The azeotropic-like composition according to the present invention is non-flammable, has little influence on the environment, and has substantially the same composition ratio in the liquid phase and the gas phase. By use of an azeotropic-like composition according to the present invention, a washing detergent, a solvent, a silicone solvent, a foaming agent, a coolant, a heating medium for a heat pump, and a high temperature working fluid that are non-flammable, have little influence on the environment, and have substantially the same composition ratio in a liquid phase and a gas phase thereof may be provided.

Azeotropic like composition containing 2-chloro-1,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene

Provided is a method for converting thermal energy into mechanical energy by use of an organic rankine cycle system that accommodates a working fluid composition. The method includes sequentially performing: evaporating the working fluid composition; expanding the working fluid composition; condensing the working fluid composition; and transferring the working fluid composition, while raising a pressure thereof, by a pump. The working fluid composition contains cis-1,3,3,3-tetrafluoropropene at a ratio higher than or equal to 92.0% by mass and lower than or equal to 99.9% by mass and trans-1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene at a ratio higher than or equal to 0.1% by mass and lower than or equal to 8.0% by mass; and has an evaporation temperature higher than or equal to 60&#xb0; C. and lower than or equal to 150&#xb0; C.

Method for converting thermal energy into mechanical energy, organic rankine cycle device, and method for replacing working fluid

An azeotropic mixture-like composition containing 1,1,1,3,3,3-hexafluoroisopropylmethylether (HFE-356mmz) and hexafluoroisopropanol (HFIP) is provided. 1,1,1,3,3,3-hexafluoroisopropylmethylether may be contained at a ratio higher than or equal to 0.1% by mass and lower than or equal to 99.9% by mass.

Azeotropic mixture-like composition, heat transfer composition, cleaner, high-temperature heat pump device, and heat transfer method

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.

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

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.

Process for producing 1,3,3,3-tetrafluoropropene

Disclosed is a process for producing 2-chloro-1,3,3,3-tetrafluoropropene (1224), including a first step of separating 2,3-dichloro-1,1,1,3-tetrafluoropropane (234da) into erythro form and threo form, and a second step of bringing the separated erythro form or threo form in contact with a base to obtain 2-chloro-1,3,3,3-tetrafluoropropene (1224). The first step is a step of separating 234da by distillation to achieve a separation into a fraction containing mainly erythro form and a fraction containing mainly threo form. In the second step, 1224 cis form is obtained from the erythro form, and 1224 trans form is obtained from the threo form. By this process, it is possible to selectively and efficiently produce cis form or trans form of 2-chloro-1,3,3,3-tetrafluoropropene (1224).

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Saitama, Japan

Yoshio Nishiguchi