Arkema France

Arkema Inc.

Kevin Hisler

Anne Marie Pigamo

Emmanuel Boussarie

Gilles Barreto

Tong Eak Pou

Jay Fingeret Miller

Denis Alonzo

Laurent Wendlinger

Bertrand Collier

Wayne Brooks

Bertrand Louis Maurice Collier

Emmanuel D Boussaire

Emmanuel D Boussarie

The present invention relates to a process for neutralizing a composition A comprising 1-chloro-3,3,3-trifluoropropene, 1,1-dichloro-1,3,3-trifluoropropane and one or more acid compound(s) of formula HX with X═F or Cl; said process comprising the step a) of bringing said composition A into contact with a solution B under conditions capable of limiting the formation of 1-chloro-1,3,3-trifluoropropene.

Process for purifying 1-chloro-3,3,3-trifluoropropene

The present invention relates to a process for purifying 1-chloro-3,3,3-trifluoropropene comprising the steps of: a) providing a stream comprising 1-chloro-3,3,3-trifluoropropene and at least one compound of formula HX wherein X is F or Cl; b) bringing the stream from step a) into contact with a solution A comprising at least one sulfite salt of formula YSOwherein Y is an alkali or alkaline-earth metal, n=1 or 2, and m=2 when n=1 or m=1 when n=2; in order to form a neutralized stream A1 comprising 1-chloro-3,3,3-trifluoropropene.

Method for purifying 1-chloro-3,3,3-trifluoropropene

The present invention concerns the use of at least one compound A comprising at least one &#x2014;SH or &#x2014;S&#x2014;, M+group, at least one &#x2014;C-G-C&#x2014; chain, in which G represents an atom from column 16 of the periodic table, not comprising a carboxy group &#x2014;C(&#x2550;O)&#x2014;OH or &#x2014;C(&#x2550;O)&#x2014;O&#x2014;, and of a molar mass of between 90 g&#xb7;mol-1 and 1000 g&#xb7;mol-1, as an additive in a formulation inhibiting corrosion in metals used in the oil industry, and more generally in any kind of industry involving the drilling of ores or fossil compounds, such as gas or oil, in order to improve both the anti-corrosion performance and the storage stability of same. The invention also concerns said corrosion-inhibiting formulations comprising at least one compound A.

Anti-corrosion formulations with storage stability

Disclosed is a step in the purification process of hydrochlorofluoroolefin refrigerants that are made from processes wherein 1,1,3,3 tetrachloropropene (R1230za) or 1,1,1,3,3-pentachloropropane (R240fa) is reacted with HF in excess. The purification process employs a cold-temperature reaction with a base to remove the HF and any HCl. The process prevents an increase in unwanted organic side-products, particularly trifluoropropyne (TPS), and simultaneously does not reduce the amount of the desired hydrochlorofluoroolefin refrigerant produced. The process also can have an optional step whereby hydrochlorofluoroolefin refrigerant and other organics are removed from aqueous process stream or streams resulting from the reaction with the base. The organics removed can be recycled. This optional step advantageously can increase the yield of the desired refrigerant, while decreasing the environmental load of the plant, by purifying the resulting aqueous process streams.

Method to neutralize and remove HF from a crude stream containing hydrochlorofluoroolefin

The present invention relates to a process for producing 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), comprising: i) providing a stream A1 comprising HF, a stream A2 comprising 1,1,3,3-tetrachloropropene and/or 1,3,3,3-tetrachloropropene, and a reactor containing a liquid phase, ii) in said reactor, contacting, in said liquid phase, said stream A1 comprising HF with said stream A2 comprising 1,1,3,3-tetrachloropropene and/or 1,3,3,3-tetrachloropropene under conditions which are sufficient to produce a stream C comprising 1-chloro-3,3,3-trifluoropropene, HF and HCl, iii) recovering said stream C, characterized in that said reactor is provided with means for stirring said liquid phase so as to keep the temperature of said liquid phase substantially constant during step ii).

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

Disclosed is a method of purifying a stream of crude hydrochlorofluoroolefin refrigerant produced by the reaction of 1,1,3,3 tetrachloropropene (R1230za) or 1,1,1,3,3-pentachloropropane (R240fa) with HF. The process includes a step of removing the cis-(Z) isomer by distillation of the crude refrigerant stream prior to a step of reacting the crude refrigerant stream with a base. The reaction with the base is a necessary step in production of the refrigerant and is done to remove HF and residual HCl from the crude refrigerant stream. Removal of the cis-(Z) isomer before the reaction with the base reduces the amount of toxic flammable trifluoropropyne (TFP) that is produced as a side-reaction during the reaction with the base. In addition, temperature control during the reaction with the base is less critical to minimizing the TFP production if the cis-(Z) isomer is first removed.

Method to purify a crude stream containing hydrochlorofluoroolefin

The present invention concerns the use of at least one compound A comprising at least one &#x2014;SH or &#x2014;S, Mgroup, at least one &#x2014;C-G-C&#x2014; chain, in which G represents an atom from column 16 of the periodic table, not comprising a carboxy group &#x2014;C(&#x2550;O)&#x2014;OH or &#x2014;C(&#x2550;O)&#x2014;O, and of a molar mass of between 90 g&#xb7;moland 1000 g&#xb7;mol, as an additive in a formulation inhibiting corrosion in metals used in the oil industry, and more generally in any kind of industry involving the drilling of ores or fossil compounds, such as gas or oil, in order to improve both the anti-corrosion performance and the storage stability of same. The invention also concerns said corrosion-inhibiting formulations comprising at least one compound A.

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Pau, France

Kevin Hisler