Extraction of sucrose from sugarcane. EP0103406A2 2022-11-17
Extraction of sucrose from sugarcane Rating:
Sucrose, commonly known as table sugar, is a naturally occurring carbohydrate found in many plants, including sugarcane. It is a key ingredient in the food and beverage industry and is used as a sweetener in a wide variety of products. The extraction of sucrose from sugarcane involves several steps, which are outlined below.
Harvesting: The first step in the extraction process is to harvest the sugarcane. This is typically done by hand, using a machete or cane knife to cut the cane stalks from the ground. The harvested cane is then transported to the sugar mill for processing.
Crushing: Once the cane arrives at the mill, it is crushed to extract the juice. The cane stalks are fed through a series of rollers that crush and squeeze out the juice. The juice is collected in a tank and is later clarified and concentrated.
Clarification: The extracted juice contains impurities, such as dirt, leaves, and stalk fragments, which need to be removed. This is done through a process called clarification, in which the juice is filtered and clarified using various methods, such as sedimentation and filtration.
Concentration: After clarification, the juice is concentrated through evaporation to increase the sugar content and make it easier to crystallize. This is typically done using steam in a vacuum pan, which boils the juice at a lower temperature and reduces the water content.
Crystallization: Once the juice has been concentrated, it is ready for crystallization. In this process, the sucrose is separated from the syrup by allowing the syrup to cool and crystallize. The crystals are then filtered and separated from the mother liquor, which is a solution containing impurities and non-sucrose sugars.
Drying and packaging: The final step in the extraction process is to dry and package the sucrose crystals. The crystals are dried in a rotary dryer and then sieved to remove any remaining impurities. The purified sucrose is then packed in bags or containers for transport and distribution.
In conclusion, the extraction of sucrose from sugarcane is a multi-step process that involves harvesting, crushing, clarification, concentration, crystallization, and drying. The resulting sucrose is a key ingredient in the food and beverage industry and is used as a sweetener in many products.
Suitable conveying means 9 extend into trough 6 to transport the bagasse 7 to another mill stage or other location. The sugar cane plant produces sucrose when its leaves conduct the processes of photosynthesis. However, even slight improvements in purity at very high purity levels are very difficult. A disadvantage which is present in the prior art processes lies in the fact that they require periodic back-flushing and regeneration of the ion exchange resin. It is obvious that when only fifty or sixty per cent. Relative selectivity can be expressed not only for one feed compound as compared to another but can also be expressed between any feed mixture component and the desorbent material. The tandems are a train of mills preceded by variouscombinationsof cane preparation devices.
. What happens if we drink sugarcane juice daily? The latter compounds along with salts, amino acids, betaine, pyrollidone, carboxylic acid, etc. A simulated moving bed countercurrent flow system is applied to this separation and although the presence of the alcohol in the adsorbent would otherwise have seriously impeded the adsorption of the sucrose, the present invention incorporates a water flush stream into such a system in a unique manner which, among other things, precludes the presence of alcohol in the adsorption zone. In addition to the white sugar that can be produced, the remaining orange water, bagasse and filter mud can also be used to produce edible alcohol, papermaking and return to farmland as fertilizer. The filtration process of cane sugar is sugarcane pre-treatment - juice extraction - clarification and purification - evaporation and concentration - 1.
At the present time, there are only a few methods for extracting the sucrose present in molasses from the compounds of the type hereinbefore set forth. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list. The apparatus which can be utilized to effect the process of this invention can also contain a series of individual beds connected by connecting conduits upon which are placed input or output taps to which the various input or output streams can be attached and alternately and periodically shifted to effect continuous operation. More specifically, they must not reduce or destroy the critical selectivity of the adsorbent for an extract component with respect to a raffinate component. The sucrose may then be desorbed with alcohol or an alcohol solution.
Extraction of sucrose from complianceportal.american.edu
In other words, there is no net transfer of material occurring between the unadsorbed and adsorbed phases. This arrangement provides a constant maceration liquid level in the trough above the mill discharge opening and any surplus liquid together with the bagasse flows over the over-flow edge 14 into the receptacle 17 from which it is drained at outlet 10 and recirculated to the inlets 8 and 16 by the pump 11 together with any additional liquid drawn from tank 12 to maintain the level of liquid in the trough above the output opening of the mill stage. It has been found that with the invention outlined above, an improvement in extraction is obtained at each of the successive mills of a tandem giving an overall improvement approaching 1. Sugarcane is not a fruit nor a vegetable. In this embodiment of the process, it is generally necessary that three separate operational zones be present in order for the process to take place although in some instances an optional fourth zone may be used. Fertilization of egg takes place in. Once all juice has been extracted, it is heated to a high temperature so that the water starts to evaporate.
Describe the extraction of sucrose from sugar cane?
Raw sugar cane juice iscomposedof a great number of organic and inorganic compounds, acids, salts etc in varying amounts. The clear juice after clarification enters the clear juice tank, and the mud juice is sent to the vacuum suction filter for filtration processing. The power required by the mills is obtained from steam turbines followed by gearboxesfor speed reduction. The goal is to extract the sucrose from the plant and refine it down into pure sugar. Hongisto Technical Department, Finnish Sugar Company Ltd. Cane residue, hereinafter referred to as bagasse, is passed out of the mill in the form of a kind of pulp comprising fibrous components of the cane and residual sugar juice not extracted in the first This bagasse is then treated with a washing or maceration liquid, by either spraying the liquid onto the bagasse or by immersing the bagasse in the liquid. .
A process as claimed in any of claims 1 to 9, characterized in that the aqueous solution is molasses. The term 'sucrose' is known commonly as 'table sugar'. Preferably, but not necessary to the operation of the process, at least a portion of the raffinate output stream will also be passed to a separation means wherein at least a portion of the desorbent material can be separated to produce a desorbent stream which can be reused in the process and a raffinate product containing a reduced concentration of desorbent material. This results largely from the fact that about fifty to sixty per cent. Without a method of separating at least a portion of the desorbent material present in the extract stream and the raffinate stream, the concentration of an extract component in the extract product and the concentration of a raffinate component in the raffinate product would not be very high, nor would the desorbent material be available for reuse in the process. Since the general flow through zone I, in accordance with the direction of fluid flow throughout the column, is from the feed stream which passes into the zone to the raffinate stream which passes out of the zone, the flow in this zone is considered to be a downstream direction when proceeding from the feed inlet to the raffinate outlet streams. The bagasse resulting from the crushing of the sugar cane particles 4 is thus discharged from the rollers 2 and 3 in a compressed state under the liquid seal in trough 6, where the bagasse expands under complete exclusion of air.
It is also known that drying under known temperatures results in the coagulation stale albuminoids in the cane, which renders them, as well-as certain waxy, gummy and coloring matters more or less insoluble, particularly in coldwater, and allowsthe sucrose to crystallize, in which state it is readily soluble even in cold water. It can also be seen that in instances in which desorbent is used which can easily desorb extract material from the adsorbent that a relatively small amount of adsorbent will be needed in a desorption zone as compared to the adsorbent needed in the buffer zone or adsorption zone or purification zone or all of them. Diffusion has been accepted as an efficient way of achieving high extraction. Sugar comes from either sugar cane or sugar beets, which have similar sugar processing methods with only a few slight differences. Centrifugation: High speed rotation separates sugar crystals from molasses.
Farmers burn sugarcane crops before harvest to remove the leaves and tops of the sugarcane plant leaving only the sugar-bearing stalk to be harvested. When it comes from the mill tandem, the juice is an opaque liquid varying in color from greenish-gray to dark green, and it carries suspended matter such as fine bagasse bagacillo , gums, albumin, wax,coloringmatter, particles of soil sand clay and muck. The function of the desorption zone is to allow a desorbent material which passes into this zone to displace the extract component which was adsorbed upon the adsorbent during a previous contact with feed in zone I in a prior cycle of operation. Like relative volatility, the higher the selectivity, the easier the separation is to perform. Then, the liquor is processed through a stage called carbonation which removes solid byproducts. The final sucrose granules are then packed and shipped out for consumers. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.