DE581322C - Process for drying Duengesalzen or chlorinated potassium in the potash industry - Google Patents

Process for drying Duengesalzen or chlorinated potassium in the potash industry

Info

Publication number
DE581322C
DE581322C DE1930581322D DE581322DD DE581322C DE 581322 C DE581322 C DE 581322C DE 1930581322 D DE1930581322 D DE 1930581322D DE 581322D D DE581322D D DE 581322DD DE 581322 C DE581322 C DE 581322C
Authority
DE
Germany
Prior art keywords
drying
duengesalzen
potash industry
chlorinated potassium
potash
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1930581322D
Other languages
German (de)
Inventor
Dr Hans Friedrich
Dipl-Ing Erich Ritter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kali Forschungs Anstalt GmbH
Original Assignee
Kali Forschungs Anstalt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kali Forschungs Anstalt GmbH filed Critical Kali Forschungs Anstalt GmbH
Application granted granted Critical
Publication of DE581322C publication Critical patent/DE581322C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/001Heating arrangements using waste heat
    • F26B23/002Heating arrangements using waste heat recovered from dryer exhaust gases
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fertilizers (AREA)

Description

Verfahren zum Trocknen von Düngesalzen oder Chlorkalium der Kaliindustrie In der Beschreibung des Hauptpatentes 570 150 ist die Bedeutung einer kombinierten Gleich- und Gegenstromgasführung für die Trocknung von Salzen, welche dauernd ihre Streufähigkeit behalten sollen, erläutert worden.Process for drying fertilizer salts or potassium chlorine in the potash industry In the description of the main patent 570 150 , the importance of a combined cocurrent and countercurrent gas flow for the drying of salts, which should permanently retain their throwing power, has been explained.

Es hat sich nun herausgestellt, daß es an der Salzeintrittsstelle bei den Trockentrommeln hauptsächlich darauf ankommt, genügend Wärme für die Verdampfung der Feuchtigkeit zur Verfügung zu haben. Während es hier also lediglich auf die Wärmemenge, nicht aber auf die Temperatur ankommt, spielt letztere an der Salzaustrittsstelle eine ausschlaggebende Rolle für die Erreichung der günstigen Beschaffenheit des Endproduktes. Da hier jedoch nur geringe Feuchtigkeitsmengen auszutreiben sind, können dementsprechend auch die Heizgasmengen relativ gering sein.It has now been found that it is at the point of entry of the salt In the case of drying drums, it is important to have enough heat for evaporation to have the moisture available. So while here it only refers to the The amount of heat, but not the temperature, plays a role at the point where the salt emerges plays a crucial role in achieving the favorable nature of the End product. However, since only small amounts of moisture have to be expelled here, Accordingly, the quantities of heating gas can also be relatively small.

Eine wirtschaftliche Heizggsführung im Sinne obiger Darlegungen läßt sich nun gemäß der Erfindung dadurch erreichen, daß man entweder die gesamten Heizgase zum Zwecke der Nachtrocknung zuerst im Gegenstrom durch die Fertigtrockentrommel leitet und sie hierauf im Gleichstrom durch die Vortrockentrommel führt, oder dadurch, daß man einen mehr oder weniger kleinen Teilstrom diesen Weg führt und einer Zusatzfeuerung den fehlenden Wärmebedarf für die vollständige Vortrocknung entnimmt.An economical Heizggsführung in the sense of the above can be can now be achieved according to the invention in that either all of the heating gases for the purpose of post-drying, first in countercurrent through the finished drying drum conducts it and then leads it in cocurrent through the pre-drying drum, or through it, that one leads a more or less small partial stream this way and an additional firing takes the missing heat requirement for complete pre-drying.

Es sind zwar schon Trockenvorrichtungen bekannt, in denen pflanzliche-Stoffe und auch festes, breiiges oder flüssiges Gut getrocknet werden soll und bei denen die an der Austrittsstelle des Trockengutes entweichenden Gase zur Vortrocknung nutzbar gemacht werden. Es handelt sich bei den bekannten Verfahren .aber weniger um die Ausnutzung des Wärmeinhalts dieser wenig über roo° heißen Gase, die schon an Wasserdampf beinahe gesättigt sind und nur eine geringe Trockenwirkung haben, sondern diese Gase sollen vielmehr infolge ihres hohen Feuchtigkeitsgehaltes eine schonende Behandlung des empfindlichen Gutes gewährleisten.There are already drying devices known in which plant-based substances and also solid, pulpy or liquid goods are to be dried and with which the gases escaping at the exit point of the dry material for pre-drying can be made usable. The known processes are, but less so about the utilization of the heat content of these little over roo ° hot gases, which already are almost saturated with water vapor and have only a low drying effect, Rather, these gases are supposed to be due to their high moisture content ensure gentle handling of the sensitive goods.

Demgegenüber sollen nach dem Verfahren gemäß der Erfindung die bei der Nachtrocknung äustretenden heißen Gase, deren Temperatur mehrere hundert Grad über der Verdampfungstemperatur des, Wassers liegt und die außerdem äußerst wenig Wasserdampf enthalten, zur Verbesserung des Verfahrens nach dem Hauptpatent bei der Vortrocknung nutzbar gemacht werden, um dort fast dieselbe Wirkung. hervorzurufen wie die unmittelbar zugeführten Heizgase.In contrast, according to the method according to the invention, the at the hot gases emitted from the drying process, the temperature of which is several hundred degrees above the evaporation temperature of the water and which is also extremely little Contain water vapor to improve the process according to the main patent the pre-drying can be made available to there almost the same Effect. like the directly supplied heating gases.

Claims (1)

PATENTANSPRÜCH: Verfahren zum Trocknen von Düngesalzen oder Chlorkalium der Kaliindustrie in zwei Stufen nach Patent 57o i 5o, dadurch gekennzeichnet, daß die bei der Nachtrocknung verwendeten hocherhitzten Gase zur Ausnutzung ihres Wärmeinhaltes der ersten Stufe des Trockenprozesses zugeführt werden.PATENT CLAIM: Process for drying fertilizer salts or potassium chloride the potash industry in two stages according to patent 57o i 5o, characterized in that the highly heated gases used during post-drying to utilize their heat content be fed to the first stage of the drying process.
DE1930581322D 1930-09-11 1930-09-11 Process for drying Duengesalzen or chlorinated potassium in the potash industry Expired DE581322C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE581322T 1930-09-11

Publications (1)

Publication Number Publication Date
DE581322C true DE581322C (en) 1933-07-25

Family

ID=6571023

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930581322D Expired DE581322C (en) 1930-09-11 1930-09-11 Process for drying Duengesalzen or chlorinated potassium in the potash industry

Country Status (1)

Country Link
DE (1) DE581322C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032697B (en) * 1952-12-05 1958-06-19 Zsigmond De Galocsy Method and device for the extraction of superheated high-pressure steam from the moisture to be dried

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032697B (en) * 1952-12-05 1958-06-19 Zsigmond De Galocsy Method and device for the extraction of superheated high-pressure steam from the moisture to be dried

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