RU15459U1 - APPARATUS FOR CHEMICAL AND TECHNOLOGICAL PROCESSES - Google Patents

Abstract

1. Apparatus for carrying out chemical-technological processes at a residual pressure of 1-100 KPa, comprising a housing, a cover, a heating element, a loading hatch, flanges for venting and draining the reaction mass with shut-off devices, characterized in that a cylindrical lid is placed a capacity of 0.3-1.0 of the volume of the apparatus with a heating jacket, a lower locking device, a loading hatch, and a nozzle column of 0.05-0.15 volume of the apparatus with an external perforated cup filled with a nozzle, for example, Rashig. 2. The apparatus according to claim 1, characterized in that a mixing device is installed in a cylindrical container.

Description

APPARATUS FOR CHEMICAL AND TECHNOLOGICAL PROCESSES

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Useful the model relates to the hardware design of chemical technology, in particular, to devices for carrying out chemical-technological processes and can be used, in particular, in the production of 1,4: 3,6 - dianhydro-D-sorbitol (sorbide), which is an intermediate in the production of cardiac vascular drugs based on its mr - and dinitro derivatives.

Known apparatuses of periodic action for carrying out catalyzed chemical-technological processes, including the selection of target products by distillation, which contain a housing, a lid, a heating element, a manhole for loading, pipes for venting and draining the reaction mass (A.G. Kasatkin. Main processes and apparatuses Chemical Technology, 8th ed., Moscow, 1971).

The disadvantage of the apparatus used in the production of sorbide is their reduced productivity, the contamination of the target product by-product impurities during distillation.

The aim of the proposed technical solution is to increase the productivity of the apparatus and the exclusion of droplet-dropping impurities from the reaction mass, polluting the target product.

This goal is achieved by the fact that on the lid of the apparatus is placed a cylindrical container with or without a stirrer, comprising 0.3-1.0 of its volume, with a jacket for heating, a locking device, a loading hatch, and also a nozzle column with a volume of 0.05 - 0.15 from the main apparatus, filled with a nozzle - Rashig rings. At the bottom of the apparatus there is a drain pipe with a locking device.

MPK VO1D 3/02 СО7Н 1/06

In FigL shows a General view of the proposed apparatus.

The apparatus consists of a housing 1, heating electric heaters (TEN-s) or a shirt for a high-temperature coolant 2. On the cover 3 of the apparatus there is a cylindrical tank 4 with a steam jacket 5 shut-off device 6, a loading hatch 7, 8. At the bottom of the apparatus there is a drain pipe with a shut-off device 9. On the lid 3, a nozzle column is installed, including a housing 10, a glass 11 with Rashig rings, a cover 12, a flange for supplying a vacuum 13.

Figure 2 shows a General view of the proposed apparatus, characterized in that the tank 4 introduced a mixing device (shaft) 14, the actuator 15, and the cover 3 is welded to the housing 1.

The device operates as follows. Powder sorbitol, a catalyst (ptoluenesulfonic acid or sulfuric acid) are loaded into a container 4 with a closed shut-off device 6, the mass is heated without steam or with stirring through a jacket 5 to 90-110 ° С until a melt is obtained, which is drained through the shut-off device 6 into the housing 1 when the locking device is closed 9. Powdered sorbitol is loaded into the housing 1 through the hatch 8 to the working volume, the locking device 6 is closed, a vacuum is applied (residual pressure 1-100 kPa) through the flange 13, heating is turned on through heaters 2 to a temperature reaction mass 160 159 ° C. After distillation of water vapor and sorbide through the nozzle column., The bottom residue is drained through the shut-off device 9. Due to the remote mixing capacity of the powdered sorbitol and catalyst for preparing the primary melt, the operation cycle of the apparatus 1 is reduced, the volume of the apparatus 1 is increased due to the reduced volume of melt compared to the volume powder-like material, elimination of entrainment of side impurities, with vapors of sorbide and water, providing the required quality of the finished product. The introduction of the mixing device into the housing 1 is limited by the need to maintain a low residual pressure (1-100 kPa) in the apparatus, i.e. the complexity of the sealing of the rotating shafts during high-temperature evaporation of water and the target product.

Preparation of primary sorbitol melt with a catalyst in a tank 4 with steam heating with a temperature lower than 132 ° C. It excludes the possibility of overheating of the reaction mass and its resinification during melting, in comparison with the previously used scheme, when powdered sorbitol and catalyst were immediately loaded into the apparatus, which were unevenly mixed and heated by TENs or a high-temperature coolant. Applicant General Director

, N.I. Rabotinsky

Claims (2)

1. Apparatus for carrying out chemical-technological processes at a residual pressure of 1-100 KPa, comprising a housing, a cover, a heating element, a loading hatch, flanges for venting and draining the reaction mass with shut-off devices, characterized in that a cylindrical lid is placed a capacity of 0.3-1.0 of the volume of the apparatus with a heating jacket, a lower locking device, a loading hatch, and a nozzle column of 0.05-0.15 volume of the apparatus with an external perforated cup filled with a nozzle, for example, the rashiga. 2. The apparatus according to claim 1, characterized in that a mixing device is installed in a cylindrical container.