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Wyszukujesz frazę "sodium tripolyphosphate" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    The synthesis of tripolyphosphate using a one-stage method and a laboratory rotary kiln
    Autorzy:
    Kowalski, Z.
    Makara, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/779187.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    sodium tripolyphosphate
    rotary kiln
    calcining
    one-stage method
    Opis:
    In the study, sodium tripolyphosphate (STPP) was obtained according to the one-stage method. Batch mixes with varied degrees of soda ash neutralization were produced using thermal or wet processing phosphoric acid and/ or recycled STPP calcined in a laboratory rotary kiln. Chromatographic analysis of the phosphate forms showed that products containing as much as 94.73% of a single component were produced. At STPP recycling rates of 2.5 and 5, products with a low bulk density ranging between 0.437-0.547 kg/dm3 were obtained. The recycling of STPP reduces the insoluble substance content, which affects the properties of the product. The phase composition of the products largely depends on the type of recycled phase of sodium tripolyphosphate (phase I and/or phase II) and the calcining temperature.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 1; 36-40
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increasing the bulk density of STPP - influence of the process parameters
    Autorzy:
    Gorazda, K.
    Banach, M.
    Makara, A.
    Wzorek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/779274.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    tripolifosforan sodu
    STPP
    gęstość nasypowa
    sodium tripolyphosphate
    high bulk density
    Opis:
    The new requirements that were placed on STPP, like high bulk density, the proper relation of Form I and Form II and suitable physicochemical properties, resulted in the development of the present production methods. The paper presents the research results on increasing the bulk density of STPP by a chemical method. In the introduced method the solid sodium phosphate from spray drying and sodium orthophosphate solution, after acid neutralization, were rubbed together. Such an operation changes the physicochemical properties of the dried sodium phosphate before calcining, which results in increasing the bulk density of STPP to a level of 0.80 kg/dm3. The dependence of STPP bulk density on process parameters such as: sodium orthophosphate solution to solid sodium phosphate mass ratio, temperature of dosed sodium orthophosphate solution, as well as the calcining temperature of mixtures were analysed.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 2; 40-45
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dry single-stage method of sodium tripolyphosphate production – technological and economic assessment
    Autorzy:
    Gorazda, K.
    Kowalski, Z.
    Kijkowska, R.
    Pawłowska-Kozińska, D.
    Wzorek, Z.
    Banach, M.
    Nowak, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/778549.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    sodium tripolyphosphate production
    dry method
    classic method
    technical and economic analysis
    Opis:
    The study presents a technology of sodium tripolyphosphate (STPP) production with the use of a dry, single-stage method. The reacting substrates (concentrated wet-process phosphoric acid - WPPA and solid Na2CO3 ) are mixed with a recycled final product (STPP) in a mixer, then a „quasi-dry” mixture is calcined in a rotary kiln. Thanks to that, some stages of a classic method of STPP production are eliminated: one of the two-stage neutralization of the phosphoric acid with sodium carbonate at temperature ~80°C, filtration of the neutralised solution and its evaporation, as well as the stage of drying a solution of mono- and di-sodium orthophosphate in a spray dryer. According to the presented technical and economical analysis, the costs of STPP production using a single-stage dry method can be 10% lower compared to the classic method.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 1; 41-44
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative evaluation of sodium tripolyphosphate production technologies with the use of a complex quality method
    Autorzy:
    Kowalski, Zygmunt
    Makara, Agnieszka
    Henclik, Anna
    Kulczycka, Joanna
    Cholewa, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/779504.pdf
    Data publikacji:
    2020
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    life cycle assessment
    sodium tripolyphosphate
    technological quality
    environmental evaluation
    economic evaluation
    Opis:
    A technological quality method was used to compare two methods of sodium tripolyphosphate (STPP) production. The first method was the classic spray method (CM) and the second was a dry single-stage method (DSM). The assessment criteria were environmental, based on Life Cycle Assessment (LCA) evaluation and economic, based on production costs. The technological quality assessment of CM was 6.5% lower in comparison to DSM. LCA environmental analyses showed that the partial environmental quality of DSM was lower by only 4.4% compared to CM. Partial economic quality was lower by 10.3%, mainly due to the lower energy costs (on average 52%) for DSM. The advantage of the new DSM method is the technological progress achieved, mainly due to the application of new technology, design, and apparatus solutions; thus, the basic elements of the activities proposed in the methodology allow for cleaner STPP production.
    Źródło:
    Polish Journal of Chemical Technology; 2020, 22, 4; 48-54
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A chemical method of the production of "heavy" sodium tripolyphosphate with the high content of Form I or Form II
    Autorzy:
    Banach, M.
    Kowalski, Z.
    Wzorek, Z.
    Gorazda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/779185.pdf
    Data publikacji:
    2009
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    tripolifosforan sodu
    gęstość nasypowa
    sodium tripolyphosphate
    high bulk density
    granular product
    Opis:
    Sodium tripolyphosphate STPP is used in laundry detergent as a detergent "builder". The paper presents the chemical method of obtaining "heavy", i.e. with higher bulk density granulated sodium tripolyphosphate. The bulk density of sodium tripolyphosphate was increased by preparing a mixture of the dried sodium phosphates, the recycled subgrain of STPP and water in specific proportions and calcining this mixture for 1 hour at 400°C and 550°C (to obtain a proper STPP form) in the chamber kiln. This method allows producing the granular sodium tripolyphosphate with high bulk density (1.04-1.07 kg/dm3) and a high content of Form I or Form II, respectively.
    Źródło:
    Polish Journal of Chemical Technology; 2009, 11, 2; 13-20
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of sodium tripolyphosphate production processes with a cumulative calculation method
    Autorzy:
    Kowalski, Z.
    Kijkowska, R.
    Gorazda, K.
    Wzorek, Z.
    Nowak, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/778020.pdf
    Data publikacji:
    2010
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    polifosforan sodu
    kalkulacja łączna
    analiza ekologiczna
    sodium tripolyphosphate
    cumulative calculation
    ecological analysis
    Opis:
    Sodium tripolyphosphate – one of the condensed phosphates is an important ingredient in various types of cleaning substances and a food additive. The paper presents a comparison of different variants of STPP production with the application of the cumulative calculation method. The material balances of the processes were taken as the basis of the analysis. The method of the process analysis as shown in the cumulative calculation determines the influence of the emissions of dust and gas pollutions originating from a particular production process, as well as wastewater and solid wastes resulting from it, upon the natural environment. It was proved that the solution of the production STPP with the dry one-step method has the lowest impact on the environment among the three assessed solutions.
    Źródło:
    Polish Journal of Chemical Technology; 2010, 12, 4; 22-25
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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