DE515929C - Device for compressing chlorine gas - Google Patents

Description

Device for compressing chlorine gas When compressing chlorine gas, especially on high pressures, insist due to the special nature of the to be compressed Gases various difficulties. When compressing to higher pressures you are therefore forced to use a multi-stage process with intermediate cooling, and experience has shown that, especially in the first stage, there is an exceeding from 2 atm. Section. is almost impossible. In practice, only one compression is usually required to 1.5 to 1.6 atm. Section. made in the first stage.

With a higher compression, the temperatures are so high of the chlorine gas that the iron or other metals of the compressors are attacked and be destroyed in a short time. Such multi-stage compressors initially have the disadvantage that cooling by water is required between the individual stages is. If there is any leakage in the cooling device, this water can with the Chlorine come into contact, whereby the chlorine immediately has a particularly destructive effect to all metals. The design of such a multi-stage compressor is also relatively complicated and requires special input for each level and outlet valves, so that the number of the chlorine operation is always easy to malfunction Occurring valves is greatly increased. The maintenance of such a multi-stage compressor is of course also associated with greater difficulties than a single-stage Compressor.

These disadvantages are overcome by the device according to the invention, by the device compressing chlorine gas also at higher pressure in one single stage compressor or compressor allowed without causing too high a temperature of chlorine occurs, in which the attack on the iron of the compressor is effective will.

The invention is illustrated by way of example in the accompanying drawing.

In the drawing, i means a cylinder of a chlorine gas compressor, 2 the piston, 3 a connection to a suction line, q. a connection to a pressure line 5, 6 an outlet valve, 7 a condenser, 8 a container for the liquefied Chlorine, a is the working space of the compressor.

According to the invention, one opens into the suction line of the compressor auxiliary line g connected to the container 8 for liquid chlorine, and the liquid Chlorine is relaxed here, as indicated by io.

This arrangement can be used with any type of compressor are and achieved the great advantage that the gas sucked in by the compressor is cooled down so deep, e.g. B. to minus 2o °, that a relatively large amount Gas is sucked in (good Degree of filling), further through reduction the starting temperature also has an end temperature that is within the permissible limits becomes possible. The amount of liquid used to cool down the aspirated gas Chlorine is relatively low. B. to achieve a temperature of minus ao ° at normal outside temperature only about 10 ° / o of that due to the compressor Compressed and Liquefied Chlorine Gas: This apparent loss of liquefied Chlorine gas is by far eliminated by the advantages achieved with the device.

The cylinder i of the compressor is surrounded by a cooling space ii, which is connected to the chlorine suction line 3 and expediently at the end on which the stuffing box 12 for the piston rod 13 is arranged, freely into the interior of the cylinder i opens, as indicated at 14. This arrangement makes a complete Relief of the stuffing box 12 achieved by during the suction stroke (movement of the Piston 2 in the direction of arrow A) the gas behind the piston 2 into the Suction line 3 and into a storage tank connected to it from relatively large content can withdraw without being in the space between the piston and the stuffing box compression can occur. This withdrawal of the gas is indicated by the arrow B indicated. This arrangement has the further advantage that the Chlorine gas on the outer wall of the cylinder i at a certain speed is led back and forth. As a result, the heat transfer from the cylinder to the cold chlorine gas is particularly intense and therefore the cooling of the cylinder wall is particularly important cheap. At the same time, with this arrangement, the cold chlorine gas also causes the Inner wall of the cylinder i, one side of the piston and the piston rod are cooled.

For the entry of the chlorine gas into working space a of the compressor slits 15 are provided in the cylinder i in a particularly expedient design.

By the device according to the invention a compression of Chlorine gas achieved in one stage at relatively high pressures, as with a the usual, hitherto known single-stage chlorine gas compressors never could be achieved.

There is also the great advantage that the cylinder is not cold Water or another liquid cooling medium needs to be cooled, which could come into contact with the chlorine at the slightest leak and thereby gives it its known destructive properties.

Claims (3)

PATENT CLAIMS: i. Device for compressing chlorine gas, in particular to high pressures, characterized in that in the suction line of the compressor an auxiliary line (9) connected to a container for liquid chlorine opens and the cylinder of the compressor is surrounded by a cooling space (ii) which is connected to the Chlorine suction line is connected. 2. Device according to claim: [, characterized in, that to relieve the stuffing box and to reciprocate the cooled chlorine in the cooling space (ii) the latter at the end of the stuffing box freely into the interior of the cylinder flows out. 3. Apparatus according to claim z and 2, characterized in that the cooling space is connected to the interior of the cylinder by slots (i5).