Large container for handling and transporting high-purity and ultra high purity chemicals
View Patent ↗The invention relates to an empty container ( 1 ) for receiving air- and/or moisture-sensitive compounds, comprising a connecting unit ( 2 ) and an inner volume of at least 300 liters and adapters for connecting the empty container, and to the use thereof.
1. A container, comprising:
a cylindrical wall;
a convex bottom;
a convex top; and
a connecting unit located on the convex top;
wherein the connecting unit comprises:
a multiway valve system having a valve (a), a valve (b) and a valve (c),
the valve (a) which at least communicates with a first external connection device, an immersion tube which extends to a lowest point of the convex bottom in an interior of the container and the valve (b),
the valve (b) is intermediate between and communicates only with valves (a) and (c), and
the valve (c) at least communicates with a second external connection device, the valve (b) and the interior of the container at the convex top,
and further wherein
the container is pressure resistant being capable of pressurization and evacuation, and
an internal volume of the container is from 300 to 20,000 liters.
2. The container according to claim 1 , wherein a material of construction of the wall, top, bottom, immersion tube, valves and communication devices is stainless steel.
3. The container according to claim 2 , wherein the stainless steel is 316L stainless steel.
4. The container according to claim 3 , wherein the 316L stainless steel is electropolished.
5. The container according to claim 1 , wherein valves (a), (b) and (c) are selected from the group consisting of a diaphragm valve, a ball valve and a bellows valve.
6. The container according to claim 1 , further comprising at least one of a protective device for the multiway valve system, a support device for standing the container upright, an attachment for a crane or other transport unit and a valve further to (a), (b) and (c) which is independent of (a), (b) and (c) and connects to an opening in the convex top of the container.
7. The container according to claim 1 which comprises a high purity or ultra high purity compound.
8. The container according to claim 4 which comprises a high purity or ultra high purity silicon or germanium compound.
9. The container according to claim 8 wherein the high purity or ultra high purity silicon or germanium compound is selected from the group consisting of silicon tetrachloride, trichlorosilane, dichlorosilane, monochlorosilane, hexachloro-disilane, monosilane, hexamethyldisilazane, tetraethoxysilane, methyltriethoxy-silane, dimethyldimethoxysilane, germanium tetrachloride and monogermane.