DD215064A1 - DEVICE FOR STORING, TRANSPORTING AND DISPENSING GASOFMOUS CHLORINE HYDROGEN - Google Patents

Abstract

The aim and the object of the invention are the development of an energetically and in terms of apparatus favorable solution, which is able to carry out simultaneously gas cleaning tasks. According to the invention, this is achieved by filling an inflatable pressure vessel, which is coolable and heatable in its entirety, with activated charcoal. The loading operation is expediently carried out with cooling of the device and the delivery of the gas takes place by lowering the pressure and heating it.

Description

Device for storing, transporting and discharging gaseous hydrogen chloride

Field of application of the invention

Field of application of the invention is the purification, storage and transport of hydrogen chloride gas «»

Characteristic of the known technical solutions

Only solutions for storage, transport and delivery of hydrogen chloride (HCl) in or from devices are known, however, no devices are known which also at the same time enable the purification or separation of HCl from gas mixtures containing them.

Known solutions for the storage and transport of larger amounts of HCl provide for liquefaction of the same before it is placed in pressure vessels in which it is stored and, if necessary, transported. As a result of the liquefaction of the HCl or a gas mixture containing the same, some purification takes place of HCl in that as a result of the equilibrium lower boiling components of the mixture ζ. Disadvantages of these solutions are that the purification of the HCl due to the solubility of other gases, in particular of hydrogen, in the liquefied HCl is insufficient, that the energy used for the liquefaction of the HCl at the consumer of the HCl is not usable and that expensive gas purification and / or gas liquefaction facilities are needed _e

_ 2 - Object of the invention

It is the object of the invention to develop an apparatus-simple, energetically favorable and without machinery emptying storage, transport and removal system, which at the same time is capable of carrying out grass-cleaning tasks «

Explanation of the essence of the invention

The invention has for its object to absorb hydrogen chloride as such or from a mixture containing them with nonadsorbable gases with a high filling factor in portable pressure vessels »

(The fill factor indicates the ratio by how much more HCl gas can be stored in containers of the same bucket content when using the invention)

This object is achieved in that in a provided with inlet and outlet pressure vessel a suitably the entire interior engaging activated carbon filling, preferably narrow-pore type »is arranged as adsorbent for HCl · The inlet and outlet, which is designed as a connection element for pipes or pressure hoses are equipped with tight-fitting fittings, have retention devices, preferably metal gauze, for the activated carbon bed «

During the loading process, the storage vessel is charged with charged hydrogen chloride or with a taut gas mixture of this and nichtadsorbier ble gases, the hydrogen chloride gas is bound to the saturation of the activated carbon and the non-adsorbable components of the gas mixture, for example hydrogen, flow through the storage vessel. When the saturation (HCl breakthrough) is reached, the loading process is terminated by closing the fittings on the connection elements (inlet and outlet). "The heat of adsorption arising during the loading process is removed, the degree of cooling essentially determining the size of the filling factor.

The removal (desorption) of the HCl from the storage vessel takes place by depressurization and subsequent heating of the adsorbent to approximately ^373K . The use of higher temperatures produces only insubstantially larger amounts of desorption gas.

It is expedient an Ausführungsfora the storage vessel, which allows the heating process for desorption with the same device that was previously used for cooling during the adsorption * Such a device may for example consist of built-in storage vessel cooling coils (heating coils) or be realized by a double jacket «the can be flowed through

Exemplary embodiment>

The following exemplary embodiment is intended to show a possible application of the invention.

A engporiger 1040 g of active carbon type B filled pressure vessel with a volume of 2 dm is charged with a gas mixture consisting of 50 percent by volume of HCl and H _"e is a charging pressure of 0.7 MPa and a loading temperature set from 289K. At the end of the loading process (breakthrough of HCl at the outlet nozzle), the amount of HCl adsorbed is 115 (based on standard state).

The advantage of the invention, which becomes greater at even lower set loading temperatures, is already apparent from the fact that with a vessel volume of 2 dnr and a filling pressure of 0 _t 7 MPa when filled with pure HCl gas only 1A dm (based on standard state) can be stored. Thus, a filling factor> 8 is already achieved with the aforementioned pressure at the aforementioned temperature.

The discharge (desorption) of the HCl is first by lowering the pressure and then by heating to ca, 373 K »with which, except for a negligible amount of the HCl is expelled from the storage mass»

Before reloading, the storage vessel must be set again to the loading temperature. «

Claims (3)

-4-Erfindungsanspräche 1 »device for storing and / or transporting and dispensing of gaseous hydrogen chloride, consisting of a provided with tightly closed outlet and inlet openings pressure vessel, characterized in that the pressure vessel is filled with activated carbon and that at the same time with the separation of non-adsorbable impurities from Gas mixtures containing hydrogen chloride gas can be carried out * 2. Device according to item 1, characterized in that the activated charcoal filling consists of small-pored activated carbon « 3 «Device according to point 1 and point 2, characterized in that it can be cooled and heated in its entirety.