DE3600519A1 - Equipment for generating cold, vacuum and heat - Google Patents

Abstract

In a multiplicity of separations of substances in the laboratory and in the pilot plant in the laboratory, vacuum distillation and extraction apparatus are used which have a high energy consumption, since, on the one hand, heating must be employed for the evaporation and, on the other hand, cooling must be employed for condensation. Since thermally sensitive substances are frequently involved which must not be exposed to the boiling temperature of the solvent used (in most cases 40 DEG C), a vacuum is generated to reduce the boiling temperature in the distillation equipment. In the equipment for generating cold, vacuum and heat, the potential of a refrigeration system (compressor with refrigerant circulation) is now utilised to make the heat removed on the refrigeration side reavailable to distillation equipment on the heating side. Since the heat output and the maximum temperature attainable (depending on compressor and coolant) are restricted (generally 50-60 DEG C), the built-in vacuum pump is used to decrease the boiling point of higher-boiling solvents. If no vacuum can be used, the heating temperature is increased by the built-in resistance heating. As a result of this and the fact that all components can, at the same time, be used for differing process courses by circulation systems and built-in cold traps in the refrigeration part, the efficiency is further improved via the energy saving, care of the environment, reliability and place-saving.

Description

The invention relates to an apparatus which simultaneously Cold, heat and vacuum generate and regulate. These three Forms of energy are used simultaneously in vacuum distillation as well as cold and heat during extractions in the laboratory in the technical center and needed in production.

The purpose of the invention is to save energy once;

• 1. When cooling, this is usually fresh water used;
• 2. for heating, electrical energy is used here;

on the other hand, to relieve the environment;

• 1. by saving water,
• 2. is controlled by a vacuum distillation Vacuum prevents solvents from entering the environment reach.

At the moment, as far as I know, there is no apparatus which can simultaneously be used in an interrelation between heat and cold delivers.

Devices have been different for a long time as individual components Techniques available (cryostat, thermostat, vacuum pump, Vacuum regulator).

The invention has for its object an apparatus to create, which in the laboratory, in the technical center as well as in production distillations and extractions and other methods Saving energy and preventing environmental damage.

The object is achieved in that a Compressor connected to an evaporator part in a cold store on the one hand and a condenser in a heat store on the other hand (which also includes the compressor itself is used to use its drive energy) Refrigerant, is used to generate cold and heat.  

The energy from the storage is directly with a medium (e.g. silicon oil) via exchangers with the help of circulation pumps to consumers (cooler for condensation, cold trap before Vacuum pump for the condensation of residual solvent vapors and Heating for evaporation) and by speed / Quantity regulated.

The respective necessary boiling point of the solvent used is built in during vacuum distillation Vacuum pump generated and constantly controlled by a vacuum regulator.

For other uses, e.g. B. solvent extraction, which have a higher boiling point than the compressor As heat is generated, the heat output can be built in Resistance heating can be increased.

The advantages achieved with this invention are

• 1. in energy saving (low power consumption);
• 2. Environmental protection (no cooling water consumption, none with Wastewater production contaminated with solvents; no Solvent vapors in the environment).
• 3. Small footprint.
• 4. Security, ease of use.

An embodiment of the invention is shown in the figure shown. The reference numbers mean:

• 1 = compressor
  2 = evaporator / cold exchanger
  3 = condenser / heat exchanger
  4 = vacuum pump
  5 = resistance heating
  6 = circulation pump
  7 = cold trap
  8 = heater for distillation apparatus
  9 = cooling for distillation apparatus

Claims (2)

1. Apparatus for generating cold, vacuum and heat
Apparatus for generating cold, heat and vacuum for use in vacuum distillation and solvent extraction in the laboratory, pilot plant and production.
Characterized in that the cooling required in the distillation is generated with the help of a refrigeration compressor and refrigerant by heat extraction and the heat obtained is simultaneously used for the necessary heating for evaporation. 2. Apparatus for generating cold, vacuum and heat
according to claim 1, characterized in that in a compact apparatus for determining the boiling point of the solvents used in vacuum distillation, a vacuum pump with control for determining the boiling point and for increasing the heating power, a resistance heater with control is installed.