Method and system for separating precipitate from liquid

A technology for liquid separation and sedimentation, applied in solid separation, flotation, etc., can solve the problems of difficult removal of fiber coils, troublesome removal of sediments, and difficulty in removing biopolymer sediments.

Pending Publication Date: 2020-11-10
CLARIANT INT LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, it has been found that it is relatively difficult to remove the biopolymer precipitate from a liquid / solvent mixture by centrifugation where the biopolymer precipitate has substantially the same density as the liquid containing the precipitate
In that case, a stirred batch reactor can be used to achieve precipitation, however, operation of the stirring mechanism may increase the risk of explosion and removal of the resulting precipitate from the reactor vessel is cumbersome
This is even more problematic in the case of biopolymers comprising relatively long fibers which are coiled in agitator equipment where the fiber coils formed are difficult to remove from the equipment

Method used

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  • Method and system for separating precipitate from liquid
  • Method and system for separating precipitate from liquid
  • Method and system for separating precipitate from liquid

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Embodiment Construction

[0029] In the present application, corresponding or similar features are indicated by corresponding or similar reference numerals.

[0030] As the skilled artisan will appreciate, the precipitate can be formed in various ways. An example is biopolymer precipitation as part of biopolymer production. figure 1 An exemplary process for biopolymer precipitation is schematically depicted. It may include steps such as:

[0031] - a fermentation step 200 for providing a fermentation broth;

[0032] - a first ultra high temperature (UHT) treatment step 210;

[0033] - one or more stages of filtration, for example comprising a filtration step 220 and an ultrafiltration step 230, for example using a filter press;

[0034] - a precipitation step 240 to provide a solid product SP; and

[0035] - A second ultra high temperature (UHT) treatment step 250 to provide a liquid product LP.

[0036] Typically, a precipitation step 240 is performed to recover the water-soluble biopolymer from...

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Abstract

Method for separating a precipitate from a liquid, including: inducing transport of at least part of the precipitate to an upper surface of the liquid; and removing precipitate from the upper surfaceof the liquid. The invention further provides a system for separating a precipitate from a liquid, wherein the system includes: a container (1) for receiving a liquid wherein precipitate is and / or hasbeen formed; a precipitate transport inducing means (3) for inducing precipitate transport towards an upper surface of liquid, held in the container (1) during operation; and -a precipitate removingmeans (5) for removing precipitate from a precipitate removal level within the container (1), the precipitate removal level being associated with an upper surface of liquid, held in the container (1)during operation. The invention also provides a process for the recovery of water soluble biopolymers from an aqueous solution.

Description

technical field [0001] The present invention relates to methods for separating precipitates from liquids, and systems and methods for recovering water-soluble biopolymers from aqueous solutions. Background technique [0002] Separating the precipitate from the liquid can be achieved in a number of ways. For example, it is known to use centrifugation to achieve separation. As will be apparent to those skilled in the art, the precipitate to be separated may include various substances or compounds, such as precipitated biopolymers. It was therefore concluded that the precipitate separation process can be part of the biopolymer recovery process. [0003] A disadvantage of known methods is that they generally involve batch processes that are not well suited for efficient large-scale processing. [0004] Furthermore, in known processes for the recovery of water-soluble biopolymers from aqueous solutions, precipitation of the biopolymer is usually achieved by mixing with a solve...

Claims

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Application Information

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IPC IPC(8): B03D1/14B03D1/24C08B37/00C08J3/14
CPCC08B37/0024C08J3/14B03D1/1462B03D1/24B03D1/14B03D1/10B03D1/242B03D2203/003
Inventor W·马尔策M·艾兴泽T·西克尔M·弗休尔斯唐克K·格拉塞M·扎弗瑞尔
Owner CLARIANT INT LTD
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