DE1946096B2 - PROCESS FOR COMPRESSING AND DRYING HUMID CRUDE CHLORINE GAS - Google Patents

Description

Auslegeschrift 1 289 520 is a water ring- It is preferred to pressurize the chlorine gas

compressor used, d. H. So a compressor to compress between 3.5 and 17.6 ata. A

which is sealed by means of water, which is also a particularly useful pressure range between

has a certain cooling effect. It has now seen 7 and 10 ata.

shown that when using water as waste 55 The invention will now be based on the drawing

sealant in the compressor explains the chlorine in more detail, which schematically shows an inventive

the compression in the compressor in the device as dimensions.

The water used as a sealant dissolves, and as a pipe 1 is directly connected to the chlorine hydrate fails. This connects the active line system of an electrolysis cell and way of the compressor disturbed. 60 leads to a rotational-es made of titanium it has now been found that this difficulty compressor 2, which is driven by an electric motor 3 th can be eliminated if one is driven via a gear 4 in the compressor. The gas coolant and an alkali metal discharge pipe 5 of the compressor 2 is sealed with the chloride or alkaline earth metal chloride solution is used. Underside of a composite column 6 verGobject a method 65 is therefore linked to the invention. This column points to one above the other Compression and drying of moist raw material arranges a lower part 7 for receiving the chlorine gas by means of a liquid-sealed grain- needed brine, which is used to sprinkle the compressor, made of titanium or a titanium alloy sors, one with a ring packing

'3 4

provided cooling system 8, in which the cold brine by ton is a gas discharge pipe 20 for the dry flows below, a polyester fiber filter 9 is attached to remove cooled compressed CMorgas,
dar brine spray, a bell bottom part 10 for When the method is carried out in a drying with sulfuric acid and an acid mist such apparatus is a gas with a temperature ^; filter 11 made of glass fibers. By means of a piping 5 temperature of 70 ° C, consisting essentially of chlorine be-12 of the refrigerator compartment is washed with cold brine fed A stands and contains water vapor, with a Oruck, conduit 13, the brine which the cooling part 8 of slightly less it performs as normal atmosphere has flowed through, drawn directly from an electrolysis cell via the pipe 1 for pressure on the suction side of the compressor. By means of a pipeline and through pipeline 1 to compressor 2, the brine collected in part 7 is led to an outlet. The compressor is supplied with brine solution to steam tank 15. By means of a pipe trickling down from the bottom of the cooling system, the brine is either drained or drawn. The impure chlorine gas is now fed to the electrolysis cell, in which the chlorine is compressed to a pressure of 8 kg / cm-1 and is also generated. This cell is not shown on the drawing of the drained trickle brine at part of the column. This is fed to the 15 through a pipe 17. The compressed gas is cooled in the KuhltedS evaporation tank 15 via the chlorine gas released and, in the process, about auluating brine mist is fed to the pipeline 1 to the compressor 1. The gas is then removed through the filter 9. The gas is then provided by steam container 18 to contact the chlorine gas with the concentrated sulfuric acid from the concentrated sulfuric acid, which is dried in the bell bottom part 10 whereby the drying of the compressed gas is used ao atmosphere mist through the Filter 11 is removed. That was to be set free. The released chlorine, dried chlorine gas, is now fed back to the temperature of 70 ° C. and a pressure of 8 kg / cm pipe 1 through the pipes 19 and 17.

For this ■ ". Sheet of drawings

Claims (1)

I 946 096 ι exists or is coated with it, and one according to the patent claim: connected bell bottom washer as dryer, which is characterized by the fact that in the Method of compressing and drying pressor as a coolant and sealing agent one of moist crude chlorine gas by means of a liquid 5 alkali metal chloride or alkaline earth metal chloride seal Compressor made of titanium or solution used. a titanium alloy or coated therewith is, and a downstream bubble-cap treatment of impure, moist chlorine is used The washer as a dryer can be identified by a wide variety of processes shows that i> - is obtained as refrigerant in the compressor. However, it is particularly suitable for and sealing means an alkali metal chloride treatment of chlorine obtained by electrolysis of or alkaline earth metal chloride solution is used. chloride, is obtained. In the method according to the invention, the 15 compressor using an alkali or alkaline earth chloride solution cooled so that no chlorine hydrate is formed in the cooling and sealing liquid and Before the compression of chlorine gas, one had to separate, as would previously have been the case with the use of pure water, the chlorine in a cumbersome and costly manner for cooling and sealing,
cleaned, cooled and dried in a playful way. In a preferred embodiment of the process. The drying was particularly important, since the inventive method is located between the moist chlorine gas, the usual compressors strongly attack the compressor and the bell bottom washer. In order to prevent corrosion of the compressor also a cooler, in which the gas is cooled directly through the dry chlorine, it was brought into contact with a liquid, the temperature of the gas was reduced to a maximum of 25 To limit 120 ° C. In order to achieve this, the hydrochloride, an aqueous solution of an alkali metal compression ratio of each grain metal chloride or an alkaline earth metal chloride compression stage, had to be limited to about 2.5: 1, where this was used. The alkali used for cooling in the case of the metal chloride solution in the gas between the individual stages can be added to the electrolysis cell. 30 leads, in which the chlorine gas is generated. However, since the cleaning, cooling and drying spray mist of the cooling liquid can be removed from the chlorine gas in this type of treatment prior to drying, namely on both low-pressure side of the compressor, cleaning must be carried out using a synthetic foot, for example -, cooling and drying fibers, especially polyester fibers,
Apparatus as well as the lines have a relatively large volume, which is particularly detrimental to the bell-bottom washer, preferably with large-scale technology. centered sulfuric acid. Since the drying of the chlorine gas, which was not previously published in German, is proposed in the inventive document 1 289 520 to eliminate this device under an increased pressure or a titanium alloy or to carry out compact bell bottom washers. The dryer to coat this compressor and the sulfuric acid used for drying can be placed in front of it. In this process, they are pumped around for the purpose of cooling. You can also use direct external cooling when the compressor comes with the damp one. The chlorine gas in contact. However, titanium has its own 45 acid mist can be removed from the chlorine gas with the help of a glass fiber filter, not attacked by damp chlorine. Examples will be. Since the compressor is placed in front of the dryer for materials used to build the washer, the dryer can be kept a lot smaller vinyl chloride, chlorinated polyvinyl chloride, with asbestos, since much smaller gas volumes reinforced phenolic resins, ceramic materials or have to be treated. According to the German 50 glass.