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Density of kraft white liquor

WebMay 1, 2011 · The current density of this reaction on Fe, Pt and Ir in the potential range 0.3–0.6 V is linearly related to the concentration of sulphide, The chronoamperometric response to a potential step is sufficiently fast to presume that Pt can be used as an active material for the in-line determination of sulphide in kraft digester white liquor. White liquor is a strongly alkaline solution mainly of sodium hydroxide and sodium sulfide. It is used in the first stage of the Kraft process in which lignin and hemicellulose are separated from cellulose fiber for the production of pulp. The white liquor breaks the bonds between lignin and cellulose. It is called … See more White liquor consists mainly of sodium hydroxide and sodium sulfide in water and is the active component in Kraft pulping. White liquor also contains minor amounts of sodium carbonate, sodium sulfate, sodium thiosulfate See more • Paper chemicals See more The Kraft cooking liquor (white) is used to extract the lignin and break down the cellulose composition of wood chips into usable pulp. The white (cooking) liquor becomes weak black liquor and is sent to the recovery process. See more

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WebIn-line dry solids content and density measurement for black liquor and green liquor at the kraft chemical (sulfate) ... and the quality of white liquor can be improved by controlling continuously the TTA of the green liquor in the causticizing process. Furthermore, recovery boiler safety can be increased using a Digital divert control system ... Webliquor. Black liquor may contain varying percentages of solids ranging from 2% to 80%. The chemical composition of black liquor varies based on its solids content. Content of TRS gases are also variable based on whether it is a strong or weak liquor. 4. First-Aid Measures Ingestion: Immediately contact local poison control center. Ingestion may ... book a room maastricht university fhml https://destaffanydesign.com

Green liquor - Wikipedia

WebGreen liquor is the dissolved smelt of sodium carbonate, sodium sulfide and other compounds from the recovery boiler in the kraft process. The liquor's eponymous green colour arises from the presence of colloidal iron sulfide. The green liquor is usually reacted with lime (CaO) in the causticizing stage to regenerate white liquor. Alternatively ... WebThe amount of an element accumulated over time in the liquor cycle or in the lime cycle of a kraft pulp mill. The accumulation factor of an element in the liquor cycle is defined as the mass ratio of the element in the white liquor over its total input into the mill system. The accumulation factor of an element in the lime cycle is defined Webliquor. Black liquor may contain varying percentages of solids ranging from 2% to 80%. The chemical composition of black liquor varies based on its solids content. Content of … book a room library brunel

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Density of kraft white liquor

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WebThe measurement of true liquor properties in the Kraft liquor cycle has been a challenge for the pulp manufacturing industry. Much of the previous generation of analysis relies on techniques such as density, conductivity decade, the advancement of optical analyzers using such techniques as ... white liquor (WL). Measurement of solids content ... WebMay 1, 2009 · The higher heating value of black liquor depends upon the type of wood/wood mix and the type of pulp produced. The typical HHV of black liquor from different sources varies from 2700 kcal/kg to 4000 kcal/kg of dry solids. The higher heating value of black liquor is an important parameter in sizing a recovery furnace and …

Density of kraft white liquor

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Webto as “white liquor.” This digestion process commonly takes place at 180 °C (356 °F). The spent chemicals, called “black liquor,” are then separated from the pulp using a series of … WebApr 1, 2009 · Note that the products resulted from the digester reactions are the cellulose pulp and the black liquor. In the Kraft recovery unit, the black liquor passes first through a set of multiple-effect evaporators, in which it is concentrated from 15% to about 70–75% of solids to become an adequate fuel.

WebThe kraft pulping process (see Figure 10.2-1) involves the digesting of wood chips at elevated temperature and pressure in "white liquor", which is a water solution of sodium … WebThe causticized green liquor is known as “white liquor” which contains mostly NaOH and Na2S. It is returned to the digester for reuse in pulping. ... converting the fuel value in kraft black liquor (13,000 to 15,000 kJ/kg) to steam is typically lower than for fossil fuel combustion, because of the heat used to evaporate the ...

WebThis study aimed to evaluate the influence of white liquor sulfidity on the efficiency of the kraft pulping process. For this study, Eucalyptus spp. chips were used. Laboratory cooking with variable sulfidity levels (0 to 40% at 5% intervals) was conducted under previously optimized conditions, aiming to obtain pulp with a Kappa number of 18 ± ... WebOct 12, 2024 · Lighter ingredients will float on top of heavier liquids, and the density of each liquid is measured by its specific gravity. To get the specific gravity, liquids are compared to the density of water, which has a specific gravity of 1.0. The amount of sugar or alcohol in an ingredient determines its density. To create a layered drink, you need ...

WebThe roles of the chemical recovery in kraft pulping are three fold: 1) process the organics and inorganic ... associated with weak white liquor to overliming scenarios at the slaker. Since green liquor density is related to TTA, density measurement has been the technique of choice for smelt dissolving tank control. Typically, mill personnel

WebThe content of cellulose in the OPL is determined to be 43.8%. Although, this result is lower than wood fibre (53%), OPL has higher hemicellulose content (36.4%) than the wood … book a room londonWebOct 12, 2024 · Lighter ingredients will float on top of heavier liquids, and the density of each liquid is measured by its specific gravity. To get the specific gravity, liquids are compared … book a room lse libraryWebThe opportunities for improving impregnation of kraft white liquor start in description of the parameters affecting the process. The first parameter is the chip itself (its basic density, … book a room library ucfThe kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na2S), known as white liquor, that breaks the bonds that link lignin, hem… book a room in teamsWebJan 1, 2009 · Sulfide ions (S ⁻² ) derived from Na 2 S in black liquor, after the pulping process, is the source of production H 2 S during of black liquor recovery cycle in Kraft pulp and paper industries. book a room in walc purdueWebThis study aimed to evaluate the influence of white liquor sulfidity on the efficiency of the kraft pulping process. For this study, Eucalyptus spp. chips were used. Laboratory … godly books for young womengodly brar