DD150984A3 - DISTILLATION APPARATUS WITH REGULATED COOLING WATER RUNNING AND DISTILLATED VOLUME THEREFOR - Google Patents

Abstract

The invention relates to a distillation apparatus, as used for example in the recovery of distilled water in laboratories. The aim of the invention is a distillation apparatus that works very effectively. The invention has for its object to provide a distillation apparatus with controlled Kuehlwasserdurchlauf, in which the cooling water consumption is reduced to the physically-technically necessary Masz and thus Kuehlwasser is saved. According to the invention, the object is achieved by providing a constant cooling water level in a distillation apparatus in front of the coil above the cooling coil, and a controller producing a constant pressure in the cooling coil and a cooling water quantity flowing down the coil below the cooling coil as a function of the temperature of the flowing cooling water Throttle valve is arranged. Another feature of the invention is the fact that in the cooling water inlet in front of the regulator, a solenoid valve and in the heating circuit of the distillation flask is installed in a heating failure, the solenoid valve switching Stromwaechter.

Description

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Title of the invention

Distillation apparatus with controlled cooling water flow and matched amount of distillate

Field of application of the invention

The invention relates to a distillation apparatus with controlled cooling water flow and matched amount of deßtillate, as used for example in the recovery of distilled water in laboratories.

Characteristic of the known technical solutions

Distillation apparatuses for water are known in which the water to be distilled is heated and evaporated in a distillation flask.

In a condenser downstream cooler, the steam in the cooling coil is condensed to distilled water.

The condensation is effected in the known apparatus by a constant and continuous Kühlwasserzu- and -ablauf.

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Furthermore, bi-distillation apparatus doors are known in which the condensed water of the first distillation stage is again evaporated in a second distillation flask and condensed in another condenser.

Since the known mono- and Bi-Destillationsapparatüren have no facilities that reduce the cooling water consumption to the required amount for the entire process or tune the amount of distillate on this, the effectiveness of the entire apparatus is adversely affected.

Object of the invention

The aim of the invention is a distillation apparatus with controlled cooling water flow and matched amount of distillate, which thereby works very effectively and trouble-free.

Explanation of the essence of the invention

The invention has for its object to provide a distillation apparatus with controlled cooling water flow and tuned Destillatmeηge in which no more cooling water is consumed for a certain amount of distillate, as is absolutely necessary for the physical-technical process.

According to the invention, the object is achieved in that before the radiator above the cooling coil a constant cooling water level and thus in the cooling coil constant pressure generating controller and after the radiator, a flowing through the cooling water as a function of temperature

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the flow control of the cooling water regulating throttle valve or after the cooling coil in the cooling water drain a temperature sensor which emits its signals to a heating power of the heater located in the distilling piston controller, is arranged.

Other features of the invention are that in the cooling water inlet in front of the controller, a solenoid valve and in the heating circuit of the distillation flask in the case of heating failure, the solenoid valve switching current monitor is arranged.

V / eiter is in the cooling water drain through its bore diameter, the temperature of the cooling water regulating throttle whose inlet and outlet opening in the shape of inwardly inclined cones with opening angles of 60 °, arranged.

embodiment

The invention will be explained in more detail below by exemplary embodiments.

In the accompanying drawings show:

Pig. 1: A schematic representation of the distillation appliance according to the invention;

Pig. 2: A section through the throttle nozzle according to Pig. 1 and

Pig. 3: a section through the flow of cooling water in dependence on the temperature of the flowing cooling water regulating throttle valve according to Pig. 1.

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The distillation apparatus consists of a distillation flask 1 and a cooler 2 with a cooling coil 3 · The cooling coil 3 is preceded by a Hegler 4, which keeps constant the height of the cooling water level 6 in the regulator vessel 5 and thus reduces the Kühlwassereiηgangsdruck. By the hydrostatic pressure of the cooling water in the regulator vessel 5, this flows through the cooling coil 3 and passes through the cooling coil 3 downstream throttle valve 7 in the overflow vessel 8. From here it is used in part to supplement the water demand in the distillation flask 1 and it flows over the Overflow 9 as wastewater.

As a controller 4, such devices can be used, which keep the cooling water pressure in the distillation apparatus from the controller 4 to the throttle valve 7 constant.

In the distillation apparatus according to the invention is a temperature-dependent throttle valve 7 according to Pig. 3 used.

This throttle valve 7 consists of a valve plug 71 which is adjustably attached to a strain rod 72 by a Einetellschraube 73.

The expansion rod 72 is fixed in the valve housing 74 to an intermediate wall 75 which is provided with flow openings 76.

Opposite the valve cone 71 is the valve seat 77, which is firmly connected to the valve housing 74. The valve cone 71 and the valve seat 77 together form an annular passage gap 78th

Depending on the temperature of the cooling water, which flows through the throttle valve 7 from the intermediate wall 75 in the direction of the annular passage gap 78, the length of the expansion rod 72 relative to the valve housing changes

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This is simultaneously a change in the size of the annular passage gap 78 and the flowing amount of cooling water connected.

In this way, it is ensured that the cooling water leaves the throttle valve 7 at a constant temperature and is reduced by the flow control of the Kühlwasserbenrauch to the physically necessary level.

To achieve the cheapest cooling water consumption of the cooling water flow with the help of the throttle valve 7 according to the desired distillate outlet>, set.

Fluctuations in the heating power are automatically regulated by the throttle valve 7.

In order to prevent that not idle cooling water flows through the radiator 2 in heating failure, a current monitor 10 is installed in the heating circuit, which shuts off the cooling water supply by a solenoid valve 11 which is upstream of the controller 4.

As the throttle valve 7 can continue to Pig. 2 are used whose input and output side is drilled in an angle of 60 ° cone-shaped.

The shape of the nozzle ensures a uniform flow of water and prevents the accumulation of air bubbles in front of the nozzle, which would reduce the cooling water throughput uncontrollably.

Optionally, according to the invention, the temperature of the cooling water downstream of the cooling coil 3 can be measured with a temperature sensor 12. The signal of the temperature sensor 12 is supplied to a suitable controller 13, which in turn controls the heating power of the heater 14 in the distillation flask 1.

To achieve the best for the distillation process cooling water consumption is a throttle valve according to F ± ß ". 2 with

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corresponding bore diameter D is used. This also determines the temperature of the cooling water at the same time.

Changes in the set by the throttle valve 7 cooling water temperature lead to a change in the amount of steam produced in the boiling piston · This in turn means that the exchanged in the cooler heat quantity increases or decreases in such a way that the Kühlwassera bga η gs tempera door remains constant. This, however, ensures that the ratio of cooling water consumption to distilled water always remains constant with respect to the same time unit.

Me invention not only relates to this embodiment, but can be applied to both mono- and Bi-Destillationsapparatüren ·

Thus, for example, in bi-distillation apparatus doors, each distillation stage can be equipped with control of the cooling water outlet temperature corresponding to the invention. The inevitably resulting different water level in the two distillation flasks can be compensated in such a way that a water level monitor monitors the height of the water level in the bicyclic piston and turn off the heating when the water drops until the mono-distillation stage refills the bi-distillation flask with distillate Has.

Furthermore, for example, in a bi-distiller in case of failure of the heating of the mono- or bi-stage, the other heater and the cooling water supply both stages are automatically turned off. ,

Claims (3)

, 7. 2 2 1117 E r f_i_n_d_u_n_g_s <_a_n__se £ __r__u_c_h 1. Distillation apparatus with controlled cooling water flow and tuned distillate, characterized in that before the radiator (2) above the cooling coil (3) a constant cooling water level (6) and thus in the cooling coil (3) a
a constant pressure-generating controller (4) and after the radiator (2) a flow of cooling water in dependence on the temperature of the cooling water flowing through the throttle valve (7) or after the cooling coil (3) in the cooling water drain a temperature sensor (12), which sends its signals to one, the
Heating power of the heater (14) located in the distillation flask (1) (13)
is disposed of. 2. Distillation apparatus according to item 1, characterized in that in the cooling water inlet in front of the controller (4) a solenoid valve (11) and in the heating circuit of the distillation flask (1) is arranged at a heating failure, the solenoid valve (11) switching current monitor (10) 3 · Distillation apparatus according to item 1, characterized in that after the cooling coil (3) in the cooling water drain a through their bore diameter, the amount of cooling water adjusting or metering nozzle
(Pig. 2), whose inlet and outlet opening has the shape of inwardly bowed cones with an opening angle of 60 °. In addition 2 sheets of drawings