摘要:
Disclosed is an integrated manufacturing process to co-produce (E)1-chloro-3,3,3-trifluoropropene, (E)1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single chlorinated hydrocarbon feed stock, 240fa. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E)1-chloro-3,3,3-trifluoropropene (1233zd(E)) from 240fa. In the second liquid phase fluorination reactor 1233zd(E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E)1,3,3,3-tetrafluoropropene (1234ze(E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst. This operation may be followed by one or more purification processes to recover the 1234ze(E) product.
摘要:
Process of catalytic fluorination in liquid phase of product 1, 1, 1, 2, 3-pentachloropropane or/and 1,1,2,2,3- pentachloropropane into product 2-chloro-3, 3, 3-trifluoropropene in présence of a catalyst.
摘要:
The present invention relates to a process for purifying anhydrous hydrogen chloride gas ("aHCI"), and preferably the anhydrous hydrogen chloride gas recovered from an isocyanate production process. In the process of the present invention, the content of chlorinated organics may be reduced from up to 1000 ppm by volume to below 10 ppb by volume levels. Generally, the process of the invention allows for chlorinated organic levels to be reduced to from 1 to 100 ppb, rendering the treated hydrogen chloride gas usable in a catalytic oxychlorination process or a Deacon process. The treated gas is also suitable for absorption in water or dilute hydrochloric acid.
摘要:
The invention relates to a method for reducing the metal ion content in a chemical compound with a dipole moment or a mixture of two or more thereof with 1 ppb or less by distillation and by supplying the energy required for evaporating the chemical compound or the mixture of two or more thereof in the form of electromagnetic waves with a frequency ranging from 1 MHz to 50 GHz.
摘要:
A process for separating hydrogen chloride gas out of a mixture of hydrogen chloride and phosgene comprises the steps of ▪ Providing a liquid mixture and a gaseous mixture both comprising hydrogen chloride and phosgene; ▪ washing phosgene out of the gaseous fluid flowing in the column in a direction bottom-to-top in the first section of a column and stripping hydrogen chloride out of the liquid fluid flowing in the column in a direction top-to- bottom in the second section of the column; ▪ evacuating the gaseous fluid and the liquid fluid flowing in the column.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von Diarylcarbonat und gasförmigem Chlorwasserstoff aus Monohydroxy-aromaten und Phosgen in der Schmelze in Gegenwart von wenigstens einem Katalysator und ohne Zugabe von zusätzlichem Lösemittel, wobei der gasförmige Chlorwasserstoff eine Reinheit von mehr als 99,0 Gew.% hat, dadurch gekennzeichnet, dass der gebildete gasförmige Chlorwasserstoff zur Entfernung der Nebenprodukte wenigstens einer Reinigungs-Massnahme, ausgewählt aus der Gruppe von Kondensation, Wäsche oder Destillation unterworfen wird.
摘要:
Disclosed is process for the production of (E) 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)) by conducting a continuous reaction without the use of a catalyst. Also disclosed is an integrated system for producing hydrofluoro olefins, particularly 1233zd(E). The manufacturing process includes six major unit operations: (1) a fluorination reaction of HCC-240fa (in continuous or semi-batch mode) using HF with simultaneous removal of by-product HC1 and the product 1233zd(E); (2) recycle of unreacted HCC-240fa and HF together with under-fluorinated by-products back to (1); (3) separation and purification of by-product HC1; (4) separation of excess HF back to (1); (5) purification of final product, 1233zd(E); and (6) isomerization of by-product 1233zd(Z) to 1233zd(E) to maximize the process yield.
摘要:
The invention provides an organic phase composition comprising: a. a first component selected from the group consisting of quaternary amines; b. a second component selected from: b1. The group consisting of category B organic acids; b2. The group consisting of a mixtures of category B organic acids and category C organic acids at a B/C molar ratio of RB/C; and b3. The group consisting of a mixtures of category A organic acids and category C organic acids at an A/C molar ratio of RA/C; c. a third component selected from the group consisting of solvents for said first component and for said second component, wherein (i) all three components are oil-soluble and water-insoluble; (ii) the molar concentration of each of said first component and said second component is greater than 0.6 mol/Kg; (iii) the molar ratio between said second component and said first component is greater than 0.9; (iv) RB/C and RA/c are greater than 2; (v) category A organic acids are selected from the group consisting of poly-aromatic sulfonic acids, naphthalene sulfonic acids and acids with a pKa in the range within +/-0.5 pKa units of that of naphthalene sulfonic acid; (vi) category B organic acids are selected from the group consisting of mono-aromatic sulfonic acids, benzene sulfonic acids, and acids with a pKa in the range within +/-0.5 pKa units of that of benzene sulfonic acid; and (vii) category C organic acids are selected from the group consisting of phosphoric acid esters and acids with a pKa in the range within +/- 0.5 pKa units of that of di-octyl esters of phosphoric acid.
摘要:
Use of glycerol obtained from renewable raw materials, as starting product for producing organic compounds. Process for producing dichloropropanol, according to which glycerol is subjected to a reaction with a chlorinating agent, with the exception of a batch reaction carried out in the presence of acetic acid or its derivatives.