CH646510A5

CH646510A5 - Cylindrical or prismatic insert in the form of a heat exchanger for fermenters

Info

Publication number: CH646510A5
Application number: CH130080A
Authority: CH
Inventors: Georg Dr Beckmann; Paul Danzinger; Peter Dr Karas; Erwin Scheifinger; Hermann Wenzel
Original assignee: Waagner Biro Ag
Priority date: 1979-02-20
Filing date: 1980-02-18
Publication date: 1984-11-30
Also published as: DE3005929C2; DE3005929A1; ES8104548A1; ATA128579A; ES489368A0; YU44980A; IT1140657B; AT360565B; IT8020046A0; SE8001311L

Description

Die Erfindung betrifft einen zylindrischen oder prismati- sehen die Form gemäss Fig. 2 ergibt. Zur Gewährleistung eischen Einbau in Form eines Wäumetauschelementes gemäss nes kreiszylindrischen Durchgangs weiden die gekrümmten dem Oberbegriff des Anspruchs 1. Wärmetauschflächen 2 an ihren den Sammelkammern 3 und The invention relates to a cylindrical or prismatic shape as shown in FIG. 2 results. To ensure an installation in the form of a heat exchange element according to the circular cylindrical passage, the curved graze the preamble of claim 1. Heat exchange surfaces 2 on their collecting chambers 3 and

Es ist bekannt, Fermentoren mit einer Umwälzeinrich- 55 4 zugewandten Enden gerade Fortsätze 8 bzw. Enden auf, so-tung zu kühlen oder auch zu beheizen, wobei je nach zu über- dass die Sammelkammern 3 und 4 der rotierenden Umwälztragender Wärmeleistung entweder der Boden oder die Sei- einrichtung 5 nicht im Wege sind. Die Umwälzeinrichtung 5 tenwände der Fermentoren durch Aufschweissung von Halb- kann als Belüftungseinrichtung ausgebildet werden, indem röhren oder ähnlichen Einrichtungen gekühlt werden. Es ist beispielsweise über die Leitung 9 durch die Rotationsachse auch bekannt, in Fermentoren Heizrohrbündel einzubauen. 60 der Umwälzeinrichtung 5 Luft zu den Flügelspitzen über ent-Ein wesentlicher Nachteil der Wandheizflächen besteht darin, sprechend angeordnete Leitungen zugeführt wird. Dies kann dass die Wände nur auf einer Seite bespült sind und so nicht drucklos erfolgen, wenn die Enden der Leitungen in Strö-vollständig ausgenützt werden können. Der Einbau von Heiz- mungsgebiete münden, wo Unterdruck herrscht. Durch diese oder Kühlrohrbündel scheitert an der schlechten Reinigungs- Belüftungsmassnahme wird der Flüssigkeit in Form von klei-möglichkeit sowie an den sonst vorhandenen Einbauten. «5 nen Bläschen Luft zugeführt, die infolge ihrer grossen Wir- It is known that fermenters with a ends facing toward the circulation, just extensions 8 or ends, are to be cooled or heated, depending on which the collecting chambers 3 and 4 of the rotating, heat-carrying output either the bottom or the side device 5 are not in the way. The circulating device 5 side walls of the fermenters by welding on half can be designed as a ventilation device by cooling tubes or similar devices. It is also known, for example, via line 9 through the axis of rotation, to install heating tube bundles in fermenters. 60 of the circulating device 5 air to the wing tips via ent-A major disadvantage of the wall heating surfaces is that appropriately arranged lines are supplied. This can mean that the walls are only rinsed on one side and are therefore not depressurized if the ends of the lines can be used in full flow. The installation of heating areas where there is negative pressure. Due to this or cooling tube bundle the poor cleaning and ventilation measures fail, the liquid is in the form of a small possibility as well as the other existing fittings. “5 air bubbles are fed into the air, which due to their great effectiveness

Die Erfindung hat es sich zur Aufgabe gestellt, den Stand kungsoberfläche einen günstigen Stoffaustausch ermöglichen, der Technik zu verbessern, indem die vorhandenen Einbauten Dem Fermentor 10 wird über die Leitung 23 Kühl- oder als Wärmetauschelement ausgebildet werden. Heizflüssigkeit zugeführt, die in den Sammalkammern 3 auf The invention has set itself the task, the Kungs surface a favorable mass transfer enable the technology to improve by the existing internals The fermentor 10 is formed via the line 23 cooling or as a heat exchange element. Heating fluid supplied in the collecting chambers 3

die gesamte Fläche des Wärmetauschelementes 1 aufgeteilt wird. Die aufgeteilte Flüssigkeitsmenge wird um Austrittssammler 4 wieder gesammelt und durch die Ableitung 24 aus dem Fermentor entfernt. Infolge wechselnder Menge von zu fermentierender Flüssigkeit bzw. zur Optimierung des Fermentationsprozesses ist es oftmals notwendig, die Heiz- oder Kühlleistung des Wärmetauschelementes 1 zu beeinflussen. the entire area of the heat exchange element 1 is divided. The divided amount of liquid is collected again around outlet manifold 4 and removed from the fermenter by the discharge line 24. As a result of the changing amount of liquid to be fermented or to optimize the fermentation process, it is often necessary to influence the heating or cooling capacity of the heat exchange element 1.

Wir weisen in diesem Zusammenhang nur auf die Tatsache hin, dass die Lebensbedingungen für den mikrobiologischen Prozess weitestgehend von der Einhaltung eines engen Temperaturintervalles die Zahl der unerwünschten Bakterien gering gehalten werden. Zur Regelung der Wärmetauschleistung ist nun einerseits in der Zuflussleitung 23 ein Drossel- In this context, we only point out the fact that the living conditions for the microbiological process are largely kept to a minimum by maintaining a narrow temperature interval and the number of undesirable bacteria. To regulate the heat exchange capacity, a throttle is now in the inflow line 23

3 646510 3 646510

ventil 7 angeordnet, sodass die eintretende Flüssigkeit einen geringeren Druck aufweist, und andererseits ist eine Entlüftungsleitung 6 an der höchsten Stelle des Austrittssammlers 4 vorgesehen, sodass der maximale Flüssigkeitsstand im Wär-5 metauschelement 1 durch die Betätigung des Drosselventiles 7 und damit auch die thermische Leistung desselben eingestellt werden kann. Valve 7 arranged so that the incoming liquid has a lower pressure, and on the other hand, a vent line 6 is provided at the highest point of the outlet header 4, so that the maximum liquid level in the heat exchange element 1 by actuating the throttle valve 7 and thus also the thermal output can be set.

Im Rahmen der Erfindung ist es auch möglich, die Wär-io metauschflächen 2 im Gegensatz zu Fig. 4 mit beidseitiger Aufwölbung auszubilden, indem Bleche gleicher Festigkeit und Wandstärke verwendet werden, und gleichzeitig dem aufblähenden Material genügend Raum gelassen wird. In the context of the invention, it is also possible to form the heat-exchange surfaces 2, in contrast to FIG. 4, with bulging on both sides by using sheets of the same strength and wall thickness, and at the same time leaving enough space for the inflating material.

C C.

1 Blatt Zeichnungen 1 sheet of drawings

Claims

646 510 2

PATENT CLAIMS The present invention is characterized in that

1. Cylindrical or prismatic installation in the form of that the heat exchange element consists of at least two heat heat exchange elements for fermenters for cooling or exchange surfaces, which can be fed with a plurality of step collecting chambers by an inlet and an outlet heating of the liquid to be fermented, each collecting each consisting essentially of two interconnected 5 chambers with the two adjacent heat exchange plates, which are connected by a heat and each form in the direction of the product exchange element, characterized in that the surface of the installation is arranged and that the heat exchange element (1) consists of at least two heat exchange plates of the heat exchange surfaces locally by spot welding surfaces (2), which are connected by an inlet and an outlet and at least one plate can be fed between the step collecting chamber (3, 4), each Sam- 10 spot welds zo is arched outwards. Melkammer (3,4) with the two adjacent heat- Other essential features of embodiments are connected to exchange surfaces and each in the direction of that specified in the dependent claims.

Generating the lateral surfaces of the installation is arranged, the method for regulating the heating or cooling output and that the plates of the heat exchange surfaces (2) locally by the installation is characterized in that for the purpose of spot welding are connected and at least one plate 15 of the heating or cooling output the amount of the liquid flowing outwards by the heat between the spot welds is throttled and is curved. the ventilation line of the heat exchange element is opened

2. Installation according to claim 1, characterized, whereby the height of the liquid level in the verti-that this has a circular cylindrical passage and kal arranged inlet collection chamber according to the one space for a rotating circulating device (5) or 20 desired heating or cooling capacity adjustable is. Ventilation device encloses (Fig. 2). The invention is shown in the attached FIGS. 1 to 4

3. Installation according to claim 2, characterized, for example and shown schematically. Show it:

1 have a fermentor in elevation of the extensions (8), which in the respective collecting chamber, FIG. 2, introduces an associated floor plan (3 or 4) and welds it to it 3 are the formation of a heat exchange element

(Fig. 2). 4 shows a section along section line IV in FIG. 3.

4. Installation according to claim 1, characterized in Figures 1 and 2, a fermentor 10 in up and that the heat exchange surfaces (2) of the heat exchange element is shown in plan. The fermenter 10 consists essentially of (1) sheet metal of different thickness and consists of a cylindrical container with a built-in that the thicker sheet metal is arranged on the inner wall of the heat exchanger element 1 and a rotating circulation exchange element and the outer one Sheet metal between device 5, which circulates the liquid medium inside the container spot welds outwards in zones, so that overheating and hypothermia are arched (FIG. 4). be avoided. The heat exchange element 1 is designed as a

5. Installation according to claim 1, characterized in that the central cylinder is formed and consists of two shells — that the heat exchange element at its highest point, ins- 35-shaped heat exchange surfaces 2, through an inlet, in particular, at the outlet collecting chamber (4), a venting and an outlet collecting chamber be fed. Each supply line (6), by means of which in the interaction collecting chamber 3 or 4 is connected to two heat exchangers with a throttle valve (7), the heating or cooling power surfaces 2. The heat exchange surfaces 2 consist of the heat exchange element that can be regulated. two parallel plates 11 and 12 and from connecting pipes

6. A method for controlling the heating or cooling power 40 13 and 14. The two sheets 11 and 12 preferably have the installation according to claim 5, characterized in that different sheet thicknesses are at the edges to reduce the heating or cooling power Quantity of the welded connection pipes 13 and 14 and have steroidal spot welds 15 through the liquid flowing through the heat exchange element. Is now throttled and the ventilation line of the heat exchange connecting pipes 13 and 14, a hydraulic fluid between the elements is opened, whereby the height of the liquid 45 pressed two sheets, the weaker sheet metal part will stand in the vertically arranged inlet plenum between the welds bulge, and a passage for the hydraulic fluid can be set from the connecting pipe is formed in accordance with the desired heating or cooling capacity. 13 to the connecting pipe 14. After making these levels

Heat exchange surface 2 is rolled up and attached to the

50 mel chambers 3 and 4 by means of the connecting pipes 13 and 14

connected and welded so that the floor plan shows