Method and apparatus for producing and storing flowable slurries, in particular for ice pigging

A technology of slurry and equipment, applied in the direction of cleaning methods and utensils, lighting and heating equipment, chemical instruments and methods, etc., can solve problems such as difficulties

Active Publication Date: 2021-08-13
SUEZ INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, "attempting to predict the full behavior of a given hybrid regime is particularly difficult" (Ainslie (2010) p. 32)

Method used

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  • Method and apparatus for producing and storing flowable slurries, in particular for ice pigging
  • Method and apparatus for producing and storing flowable slurries, in particular for ice pigging
  • Method and apparatus for producing and storing flowable slurries, in particular for ice pigging

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Experimental program
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Embodiment Construction

[0025] Reference numerals appearing in more than one figure indicate like or corresponding parts in each of those figures.

[0026] In this specification, the solid fraction is considered to be the proportion of solid particles to the total volume of the slurry when measured by calorimetry. A simple approximation of the solid fraction can be obtained by the coffee pot method. Both methods are well known in the art and described eg in Ainslie (2010).

[0027] refer to image 3 , shows in simplified form an apparatus for producing a flowable slurry of frozen particles, the liquid flow paths are shown in solid lines and the slurry flow paths are shown in thick solid lines. The apparatus includes a control system 100 comprising processing and storage means known in the art, a selected one of signal and control inputs and outputs being indicated by dotted lines. For clarity, only some of the flow channels and signal or control lines are shown. Of course, it will be understood t...

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Abstract

An apparatus for generating and storing in a tank (22) a flowable slurry (2) of frozen particles useful in particular for ice pigging, the apparatus comprising a control system (100) arranged to monitor The operating parameters OP of the agitator (23) in the storage tank. When the control parameter CP based on the operating parameter OP reaches the threshold CPt, the control system starts the slurry pulverization and separation or dewatering cycle. The control parameter may represent the cumulative energy input to the storage tank (22). Comminution may be performed prior to separation, with the process cycle ending when the sensed rheological parameter RP of the slurry circulating in the process channel reaches a target value RPt.

Description

technical field [0001] The present invention relates to systems for producing water ice slurries or slurries of other frozen particles such as for ice pigging pipes. [0002] In this specification, a slurry or suspension is a mixture of liquid and solid particles produced by partially freezing a liquid, liquids being considered to include, for example, flowable gels and thixotropic products. Background technique [0003] Flowable icing slurries (usually but not necessarily water ice) are used for various purposes including, for example, for cooling food, for storing energy in air conditioning systems, for medical treatment, and for ice pigging, When used in ice pigging, the slurry is forced through the pipe under pressure to remove dirt. Usually, a freezing point depressant (such as salt, sugar, citric acid, or any other suitable substance) is added to water or other liquid before freezing; as the solid portion increases, the freezing point depressant becomes concentrated i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25C1/00F25C5/04F25C5/18B08B9/032
CPCA23G9/045F25C5/00F25C2301/002F25C2600/04F25C2700/08B08B9/0555F25C1/00F25C5/18
Inventor 埃里克·艾伦·安斯利多米尼克·乔治·伊恩·阿什蒂莫西·约翰·迪恩斯马丁·赫伯特
Owner SUEZ INT
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