20 results about "Chlorofluorocarbon" patented technology

A process is provided which includes contacting a haloalkane reactant with a fluorination agent in the liquid phase, in the presence of a catalyst, under conditions which are free of or substantially free of a superacid, to produce a product stream including a haloalkane product, preferably a hydro(chloro)fluorocarbon.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of: a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

Provided is a method capable of separating 1-functional and 2-functional fluorine-containing ether compounds having a polyfluoropolyether chain and a prescribed functional group with good yield and high separation capacity. A separation method is a separation method for separating a compound represented by formula (1) and a compound represented by formula (2) from a mixture containing them using a chromatograph using a stationary phase and a mobile phase, wherein the mobile phase contains at least one specific solvent selected from the group consisting of hydrofluoroolefins, hydrochlorofluoroolefins, chlorofluoroolefins, cyclic hydrofluoroolefins, cyclic hydrochlorofluoroolefins, cyclic chlorofluoroolefins, cyclic hydrofluorocarbons, cyclic hydrochlorofluorocarbons, cyclic chlorofluorocarbons, and perfluoroketones.A‑(OX) m ‑O‑Z‑(R) n1 Formula (1) (R) n2 ‑Z‑(OX) m ‑O‑Z‑(R) n3 Formula (2)

The present invention provides a method for producing perfluoroalkyne compounds by isomerization reaction of perfluoroalkadiene compounds, which enables the production of perfluoroalkyne compounds in high yield. It also provides a composition having a high content of perfluoroalkyne compounds and a low content of other organic compounds with 5 carbon atoms. [Solution] A method for producing a perfluoroalkyne compound, comprising the step of reacting a perfluoroalkadiene compound in the presence of a fluorinated aluminum chloride-containing catalyst to obtain a perfluoroalkyne compound, wherein the fluorinated aluminum chloride-containing catalyst is obtained by removing at least a portion of the by-products from a product obtained by reacting aluminum chloride in the presence of a hydrochlorofluorocarbon.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

The invention discloses a catalyst and a preparation method and application thereof.According to the catalyst, cobalt phosphide serves as an active component, the active component and auxiliary metal are loaded on a mesoporous carrier, the mesoporous carrier can improve the stability of the catalyst and prolong the service life of the catalyst, and the activity of the catalyst cannot be obviously reduced after the catalyst operates for a long time; and the synergistic effect of the active component and the auxiliary metal can improve the conversion rate of the raw materials and improve the selectivity of the product. Meanwhile, the catalyst taking the phosphide of cobalt as the active component can also enable the dehydrohalogenation reaction of chlorofluorocarbon to be carried out at a relatively low temperature (such as 280 DEG C or below), so that the production cost is saved.

Provided are a refrigeration method and apparatus. In the refrigeration method, water is vaporized in vaporization tubes (4, 5, 6, 7, 8) under the combined action of a negative pressure, an airflow and a filler, and during vaporization, the water absorbs vaporization heat and reduces the temperature so as to obtain cold energy. The cold energy is used for various refrigeration scenarios and facilities, or for air conditioning. A compressor is not required, and various existing refrigerants such as chlorofluorocarbons, alkanes and liquid ammonia are not required. The refrigeration effect is good, the manufacturing process is simple, the costs are low, the efficiency is high, and the usage is safe, economical and environmentally friendly.

This invention provides an integrated photo-oxidation and hydrolysis reaction apparatus and its application, relating to the field of photo-oxidation technology. The integrated photo-oxidation and hydrolysis reaction apparatus includes a reaction tower, a light source system, and a spray circulation system. The light source system includes several LED light sources, which are staggered and parallel to each other on both sides of the inner wall of the reaction tower, dividing the interior space of the tower into a continuous serpentine channel. The spray circulation system includes a circulation pump and several perforated transparent spray pipes, each of which is positioned above one of the LED light sources and on the same side of the inner wall of the reaction tower. This invention uses a single-wavelength LED light source, provides mild reaction conditions, and achieves high reaction efficiency, making it suitable for an integrated photo-oxidation and hydrolysis reaction system for producing fluorinated acids from chlorofluorocarbons containing the RCHCl2 structure.

A recovery process includes (i) contacting or mixing an effective amount of a treatment reagent with a composition to form a treated composition, the composition including at least one member selected from at least one (hydro)haloalkane, at least one (hydro)chloro(fluoro)carbon, at least one metal, at least one metal salt, at least one organic nitrile redox system, at least one phosphate, at least one phosphine, at least one metal phosphate complex, at least one metal phosphine complex, and combinations thereof; and subjecting the treated composition to separation, such as distillation or fractionation, to recover the at least one (hydro)haloalkane and the at least one (hydro)chloro(fluoro)carbon.

Disclosed are a method and an apparatus for thermal management of a vehicle battery. The method comprises controlling a temperature of the vehicle battery based on a refrigerant. The refrigerant comprises at least one selected from the group consisting of: a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

The invention belongs to the technical field of refrigeration, and particularly relates to a refrigeration method and device based on filler and airflow, the method comprises the following steps: under the action of negative pressure and airflow, water is vaporized on the surface of the filler, the water absorbs vaporization heat in the vaporization process so as to reduce the temperature, and chilled water is obtained; chilled water is used as a working medium, and cold energy is fed into a scene to be refrigerated after the chilled water is directly led out or subjected to heat exchange through a heat exchange system. The refrigerant is used for preparing an air conditioner, a central air conditioner or other refrigerating devices, does not need a compressor, does not need refrigerants such as chlorofluorocarbon, alkane and liquid ammonia, and is good in refrigerating effect, simple in manufacturing process, low in cost, high in efficiency, safe to use, economical and environmentally friendly. The device is completely different from the prior art, the development direction of the refrigeration technology is thoroughly changed, and the device has far-reaching influences on the development of the world refrigeration technology, especially the development of the air conditioner industry.

The invention belongs to the technical field of refrigeration, and particularly relates to a refrigeration method and device, according to the method, under the combined action of negative pressure, airflow and filler, water is vaporized in a vaporization pipe, in the vaporization process, the water absorbs vaporization heat to reduce the temperature so as to obtain cold energy, and the cold energy is used for manufacturing various refrigeration scenes, facilities or air conditioners. A compressor is not needed, existing various refrigerants such as chlorofluorocarbon, alkane and liquid ammonia are not needed, the refrigerating effect is good, the manufacturing process is simple, cost is low, efficiency is high, and use is safe, economical and environmentally friendly. The device is completely different from the prior art, the development direction of the refrigeration technology is thoroughly changed, and the device has far-reaching influences on the development of the world refrigeration technology, especially the development of the air conditioner industry.

A perfluoroalkyne compound production method comprising a step for reacting a perfluoroalkadiene compound in the presence of a catalyst containing fluorinated aluminium chloride to obtain a perfluoroalkyne compound, wherein the catalyst containing fluorinated aluminium chloride is obtained by removing at least some by-products from a product obtained by reacting aluminium chloride in the presence of a hydrochlorofluorocarbon.

This application relates to the field of catalytic conversion technology of organohalides, specifically disclosing a catalytic disproportionation reaction method for chlorofluorocarbons. The method includes the following steps: using two or more chlorofluorocarbons with different chlorine / fluorine atom numbers as raw materials, and reacting them in a closed reactor in the presence of aluminum chlorofluoride and / or amorphous aluminum fluoride catalyst at a temperature of 50-400℃ and a pressure of 0.1-5MPa for 1-24 hours, causing directional transfer and recombination of chlorine and fluorine atoms between the raw material molecules to generate a target product with a chlorine / fluorine atom number between that of the raw materials; wherein the aluminum chlorofluoride has the chemical formula AlCl₂. x F 3‑x 0 < x < 3; the chemical formula of the amorphous aluminum fluoride is AlF3·nH2O, where n is 0 or a positive integer. The target product is generated with high selectivity by promoting the exchange of chlorine / fluorine atoms between different CFC molecules through aluminum chlorofluoride and / or amorphous aluminum fluoride catalysts.

Provided are a method for geometric isomerization of a specific geometric isomer (isomer 1) represented by formula (1) to produce a specific corresponding geometric isomer (isomer 2) represented by formula (1), the method including a step for bringing the specific geometric isomer (isomer 1) represented by formula (1) into contact with a compound (A), which is at least one of dichlorotrifluoropropane and hydrogen chloride, in the gas phase, and a composition.

The invention provides a refrigerating and heating device and method based on dissolution and precipitation heat. The refrigerating and heating device based on the dissolution and precipitation heat comprises a container, a pressure mechanism, a heat exchange pipeline and a matched controller. A solution is contained in the container, and the dissolution enthalpy of solute in the solution is larger than 0 when the solute is dissolved in the solvent. The pressure mechanism is arranged on the container and can pressurize / depressurize the solution in the container. The heat exchange pipeline comprises a cold heat exchange pipeline and a heat exchange pipeline, and the cold heat exchange pipeline and the heat exchange pipeline are both connected with the container. Wherein the cold heat exchange pipeline and the container can form a cold circulation path, and the heat exchange pipeline and the container can form a heat circulation path. According to the refrigerating and heating device based on the dissolution and precipitation heat, substances with a strong greenhouse effect cannot be released into the atmosphere, and the problem of high global warming potential caused by use of fluorocarbon refrigerants such as chlorofluorocarbon, hydrofluorochlorohydrocarbon and hydrofluorocarbon can be solved.

This method for producing a first perfluoroalkene compound involves a step for reacting a second perfluoroalkene compound with a perfluoroalkyl iodide in the presence of a fluorinated aluminum chloride-containing catalyst to obtain the first perfluoroalkene compound, wherein the fluorinated aluminum chloride-containing catalyst is obtained by reacting aluminum chloride in the presence of a hydrochlorofluorocarbon to obtain a product and removing at least part of a by-product therefrom; the first perfluoroalkene compound is represented by formula 1; the second perfluoroalkene compound is represented by formula 2; and the perfluoroalkyl iodide is represented by formula 3.

A packing and airflow-based refrigeration method and refrigeration apparatus, relating to the technical field of refrigeration. The refrigeration method comprises: under a negative pressure and an airflow, water is vaporized on the surface of a packing; during the vaporization process, the water absorbs the vaporization heat such that the temperature is reduced and a chilled water is obtained; the chilled water is used as a working medium, wherein the chilled water is directly drawn out, or the chilled water transfers heat by means of a heat exchange system, and cooling capacity is sent to a scene to be cooled. The refrigeration apparatus can implement the refrigeration method. The present technical solution is used for manufacturing an air conditioner, a central air conditioner, or other refrigeration apparatuses, without the need for a compressor, and without the need for a refrigerant such as chlorofluorocarbons, alkanes, and liquid ammonia.

This invention provides a method for producing perfluoroalkene compounds that enables the acquisition of perfluoroalkene compounds in high yield. It also provides a composition with a high content of perfluoroalkene compounds. [Solution] A method for producing a perfluoroalkene compound represented by the following formula 1, comprising the step of reacting a raw material perfluoroalkene compound with a perfluoroalkyl iodide in the presence of a fluorinated aluminum chloride-containing catalyst to obtain a perfluoroalkene compound represented by formula 1, wherein the fluorinated aluminum chloride-containing catalyst is obtained by removing at least a portion of the by-products from a product obtained by reacting aluminum chloride in the presence of a hydrochlorofluorocarbon, the method for producing a perfluoroalkene compound represented by formula 1. TIFF2026110073000020.tif32114