TH4334B - Movement for the exchange of media, dispersion of slurry terapalic ash. - Google Patents

Abstract

A process for exchanging slurry, a diffusion medium of teratasic acid, consisting of aliphatic conduction. Terephalic slurry of carboxylic acid acid into a multi-state column at the top of that column. and the water at the bottom of such columns by causing the current to flow up in the multi-stake column while the precipitation of terephthalic granules acid is good and the introduction of the aliphatic solution carboxylic The aqueous acid exits the upper part of the multi-state column and the aqueous slurry of the terephthalic acid exits the lower part of the multi-state column.

Claims (5)

1. The process for exchange of teraphthalic acid dispersion mediators, which include Aliphatic navigation Terephthalic carboxylic acid slides The acid enters a multisate column at the top of the column and water enters the bottom of the column to create a stream of water in the multi-stage column. While the terephthalic granulation Acid is well formed and the conductivity of aliphatic carboxylic solution. Water from the top of the multisate column and the slurry in the water of the teraphthalic acid from the bottom of the multi-stage column 2. The process as requested. Claim No. 1, where at least 90% terephthalic acid tablets by weight in aliphatic The carboxylic acid slurry has a grain size ranging from 5 to 600 microns. 3. The process of claiming claim 1, where aliphatic. Carboxylic Teraphthalik's slery Acid will have teraphthalic. 5 percent to 50 percent granular acid. By weight, 50 percent to 95 percent aliphatic carbonsillic acid with 15 percent weight and water by weight or less. The carboxylic acid will be at least one of the acids that can be chosen from the group containing acetic acid, propionic acid, normal-butyric acid. Sid isobutyric acid normal-valeric acid, trimethylacetic acid, and carproic acid 5. Proceeding process. At 1 where the amount of water flowing is 0.01 to 5 times relative to the weight of the terephthalic pellets. Azid precipitated in multistate column 6. Proceeding process 1, which also consisted of separation of aliphatic carboxylic acid from aliphatic carboxylic solution. Boxylic The hydrochloric acid and the extracted acid were recycled in a step A of the Terephthalic acid's aliphatic carboxylic acid 7. Claim 1, where aliphatic The carboxylic acid consists of acetic acid 8. The process of claim 1, where the aliphatic carboxylic solution The water acid is removed from the top of the column at a point higher than where the slurry was introduced. While Slery in the water of Terefthalik The acid is removed from the bottom of the column at the point below the point where the water enters the column 9. Proceed according to claim 1. Where a number of baffles are arranged within a multi-stage column. To provide a number of states within that column The baffles are arranged in a minimum interval of 10 centimeters. 1 0. Movement according to claim 3, where at least 90% teraphthalic acid pellets are weighted. Grain size from 5 to 600 micron 1 1. The movement according to claim 9, where the amount of water The resulting flow is 0.01 to 5 times the weight of the terephthalic pellets. Azides precipitated in column 1. 2. The process according to claim 11, where the flow rate of the tidal current in the upper part of the column is approximately (formula) m / s 3.Procedure according to claim 12, where the flow rate of the upstream water in the vicinity of the baffle is approximately (formula) m / s 1. 4. The movement according to claim 1, where the slury in the water of the Terephthalik. The acids removed from the column are aliphatic. Less than 1 percent of such carboxylic acid by weight 1 5. The claim 1 process, which also includes a process of removing gas from teraphthalic acid, to remove the air contained therein before sery That column