TH32463A - Process for the preparation of 1,2 - dichloroethane by direct chlorination reaction. - Google Patents

Abstract

DC60 Preparation 1,2-dichloroethane (EDC) was introduced by feeding ethylene and chlorine to the EDC circulating (direct chlorination) in the mixed route of the boiling reaction. The heat from the reaction is removed from the gas gap. The 1,2-dichloroethane (EDC) preparation is brought by spraying ethylene and chlorine to the circulating EDC (direct chlorination). ) In the way the mixture boils, the heat from the reaction is removed from the gas gap.

Claims (9)

Disclaimers (all) that will not appear on the advertisement page: 1. The process for the preparation of 1,2 dichloroethane (EDC) by feeding ethylene and chlorine to EDC is circulated with a special mixing and heat compensation which has Characteristic performed at temperatures from 65 to 125 and at pressures from 0.5 to 3.2 bar completely, pressure and temperature which were selected until the mixture boiled. Conduction heat Of the reaction from the gas gap And applied to at least one heat exchanger. 2. Process according to claim 1, which is characterized by the reaction part Where the gas is removed from the idle period, the EDC gas is regulated in the heat exchanger and the liquid EDC is passed back to the reactor. 3. Process according to claim 1 or 2, which are unique in that the mixture from The reaction in which gases are fed on the sides to the column. Distillation from where portions of inert gas and inactive ethylene are removed from the top, pure EDC is removed on the side under the infeed point and high boiling point by-products are removed. From the bottom 4. The process according to claim 3, which is unique in which the distillation column is applied to The heat of the reaction from the gas gap of the reactor. 5. One of the preceding claims process. Which are unique to that of the mixture This is especially the result of a static mixer. 6. Process on any of the preceding claims. Which has the peculiarities that perform The reaction was performed with a system of catalysts containing Lewis acid and halides from one or two groups of the periodic table. 7. Process according to claim 6, which is characterized by the reaction precursors containing sodium chloride and ion (III) chloride at a molar ratio of less than 0.5. 8. One of the equipment for the process of claim 1 to 7 which is characterized at the reactor (1) the mixer (2) the EDC liquid limitation (3) the circulating flow for the liquid EDC ( 4) Pump (5) Inlet point for chlorine and ethylene respectively (6,7) outlet line for The gas mixture (8) bine (9) to the heat exchanger (10) the heat exchanger (10) the reverse bine (11) from the heat exchanger. (10) to the reactor (1) line (12) to the distillation column and line (13,14) to and from the heating unit respectively. 9. Equipment according to claim 8, characterized by the distillation column (15) line for volatile products (16) condenser (17) circuit (18) return tube (19) pump ( 20) The eject line for the low boiling point product (21) the ledge (22) is cut off and the return line (28) from the condenser (24) to the container (19) is applied.