DE2220290B2 - DEVICE FOR CONTINUOUS CRYSTALLIZATION CLEANING OF ORGANIC COMPOUNDS FROM CONTRIBUTIONS RELEASABLE IN THE MELT - Google Patents

Description

2?

which is pre-cooled to a temperature close to the crystallization temperature. The connection crystallizes when it reaches the crystallization surface 6 of the block 7. The stream of circulating The compound detects the admixtures and removes them from the crystallization surface 6 via the nozzle 3. Here, the heat exchanger 5 heats the melting surface 8 of the block 7 to a temperature at which the rate at which the purified molten compound is discharged is equal to that Is the rate at which the crystalline phase grows. While it was melting from below the block slowly descends under the influence of its own weight, removing the purified molten Substance is displaced from the gap between the block 7 and the wall of the cone 1 via the connecting piece 4.

To prevent contamination of the cleaned connection, it can be attached to the inner surface of the Cone 1 an annular groove9 (Fig. 2) executed which contains a nozzle 10 for discharging the admixtures and is removed from the crystallization front located at a distance equal to the structure of the crystals of the purified compound depends.

In this case, the device works analogously to that in FIG. 1 shown device. One and only The difference is that during the melting of the melting surface 8 from below the block 7 slowly descends under the influence of its own weight, thereby removing the purified molten compound displaced from the gap between the block 7 and the wall of the cone 1. This is where the connection divided into two streams.

The first stream (the main stream), which affects the productivity of the device and the degree of purity of the Purified compound, determined, consists of the purified molten compound produced by Melting of the part of the block 7 which is below the annular channel 9 is obtained. The main stream of the purified molten compound flows during the melting of the ingot 7 down over the nozzle 4.

The second stream (the auxiliary stream) consists of the purified molten compound passed through Melting of the part of the block 7 which is located above the annular channel 9 is obtained.

The auxiliary stream of the purified molten starting compound flows during the melting of the Blocks 7 down over the nozzle 10.

F i g. 3 shows one of the in FIG. 2 device is an analog device in which the ring-shaped Rinne has a different profile.

This device works analogously to that of FIG. 2.

1 sheet of drawings

Claims (1)

¹ TW cold and melting zones alternate. Liquid material to be cleaned becomes uninterrupted Claims: conveyed into the cold zone by a pump, which _{There is a permanent cool place} . Hjer crystallizes the 1 device for uninterrupted crystal from ζ _{woving the} shape of a solid crystal lization of some organic compounds of 5, ^. ^ _{D pf Ien becomes} ^ η of the melt dissolvable admixtures, behscnen J generated pressure from below iehend from a cleaning chamber, which pushed the cold zone from ae ν. When m S zuTeiJgTnden VerSung is filled and ata * n ± J ^ ^ with a heat exchanger and «MJi S ^ J ^ ^ ^^ _{the apparatus in} liquid form over the eTmiSn H SÄ ^ u ° ^ end A ^ part of _{the provision that} Substance and a nozzle for deriving the productivity is low and that they do not is equipped with a marked * « _fc degree of purity of the connections to be cleaned shows that the cleaning _{chamber has the form rei tem> da bcim the} passage of the plug a pointing with its tip downward Ke "has 5 S e _Kältezon not purified product in the gel (1) whose sheath (8) as Warmeaustou aur agreed product across the gap zw - is formed shearer and the enamel surface presents _the * _crystalline plug and the chamber, and the tip of which a connecting piece W can reach. . ", .., deriving the cleaned substance und_an.der wan j ^ ^ ^ _present invention, the conical base a nozzle (2) for supplying ^ to eliminate given disadvantages, the substance to be cleaned and a nozzle (3) oc ££ _{ndmg is} based on the task of containing one for deriving the admixtures. Device for continuous artistic expression 2. Device according to claim 1, characterized overall vo ^ ^ _{Compound E} n from featuring in that the inner surface of the Kegelrnan- L ^ to provide ₁ releasable admixtures which tels (8) having an annular ^ gutter (9), _ provided _a5 ^ ™ _{purely fanned} Construction and a larger Beist, which has a nozzle (10) for deriving the ^^ "j ^ and makes it possible to contain Verbm admixtures. to get duneen with a higher degree of purity. According to the invention, this object is achieved in that the cleaning chamber has the shape of a ^{3 has} its tip pointing downwards, the jacket of which is designed as a heat exchanger and represents the melting surface, and the tip of which has a r λ; ~ vht ,, has no nozzle for discharging the cleaned material and The invention relates to a device ^"U ^ _{K gelgrun} dfläche a nozzle for supplying turn continuous crystallization cleaning organic at 35 oer *» _{d § ffe and e} i _NEN port for waste "ischer of compounds in the melt releasable f ^^ f contains _quantities. Admixtures. . Preferably, the inner surface of the cone jacket The cleaning of organic compounds crorcn _e iner annular groove provided which comprises a uninterrupted zone-wise freezing Mt known, with a ^ b contains admixtures, it is based on the fact that the _{device carried out through the cooling zone fhe- 4o stages ^ J ^ J invention} freezes ßende liquid and when it emerges from it * ™ IS ± the task set above , melts again. Here the shifting '«^ enables productivity The crystallization front selectively reduces the admixtures without reducing the degree of purity of the in terms of the thermodynamic distribution ^factor . _{and as a result of} the cleaning the end. The latter is the ratio of the concentration " _s ^ J ^ S ^ J ^ The device is simply operationally safe in the connection dissolved in the solid phase to the gfjggj ^^. Concentration in the liquid. " _{Ddm the} drawing shown It is a device for cleaning organi- A ^ J ° _{ω the} invention is explained in more detail, see links through continuous zonen- £ ^η ^ ^50ει8 Ρ ^{1 <ϊ1β} wise freezing known (G. M. Doede, Ind. Che- 50 ω «6 General view of a device for mist, 38, 462, 1962), ^ lche a cleaning chamber ^ for ^ g ^ Crystallization cleaning of organic ^ ΆΪΖ ^^ ™ ^^ compounds of trimmings that are soluble in the melt as well as with a connecting piece for supplying the zu rhyme 55, .., ^ ^{1 g} . _ring-shaped channel contains, and low product and a nozzle for ^ values * f * ™haben? ^ « _{Design S} shape of the ring conveying admixtures as well as with a B ^ fr for the small inside of the cone. Equipped with raw material. This device can ^m g ⁿ ^ ™ _en ^ _{üt ei} ne cleaning chamber for'uninterrupten crystallization cleaning ^ orga- ^^ ^t ^^ _{v: evigi} (Fig. 1) with nozzle niche substances of releasable in the melt by 60 ™ ^ ^η ^ ° ™ _{and 3>} | _ie mixtures can be used on the base. ^ KoqrU 1 are located and with socket (pipe socket)