Studying the influence of the intensity of mechanochemical activation on the process of steam conversion of coal

Luhovskoi, Artur; Glikin, M. A.; Kudryavtsev, Sergey; Glikina, Irene

doi:10.15587/1729-4061.2018.136371

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…Peculiarities of the process of coal gasification in conditions of aerosol nanocatalysis are studied in [17]. The study [18] reveals the influence of mechanochemical activation on the rate of release of synthesis gas from coal and the gas composition. Studies [17,18] have shown a possibility of obtaining synthesis gas of a given composition and the use of this gas as a raw material for FTS.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The study [18] reveals the influence of mechanochemical activation on the rate of release of synthesis gas from coal and the gas composition. Studies [17,18] have shown a possibility of obtaining synthesis gas of a given composition and the use of this gas as a raw material for FTS. Previous studies of FTS [19] using the MCA catalyst have shown the feasibility of studies on the effect of pressure on the activity and selectivity of Fe-Cu-K catalyst under AnC conditions at a pressure of 0.1-1.2 MPa.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Conversion of synthesis gas in aerosol of Fe-Cu-K-catalyst particles at pressures of 0.1–1.0 MPa

Domnin¹,

Glikina

Kudryavtsev³

et al. 2022

EEJET

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Chemical conversion of synthesis gas to hydrocarbons and other products under the condition of the method known as "aerosol nanocatalysis" has been studied. A laboratory installation was developed and experimental studies were carried out in the range of process-dependent parameters: pressure from 0.1 to 1.0 MPa, temperature from 483 to 533 K, catalyst concentration from 5 to 25 g/m3 of reactor volume, and mechanochemical activation intensity from 4, 0 to 11.2 Hz. It was found that an increase in pressure from 0.1 to 1.0 MPa gradually increased the conversion degree from 44.1 % to 56.5. An increase in pressure of the FTS process in conditions of aerosol catalysis from 0.1 to 1.0 MPa contributed to a stable yield growth from 14 to 17 %. Selectivity reached its maximum value of 93.1 % at a pressure of 0.3 MPa. Dependence of selectivity on the catalyst MCA intensity was characterized by the constant growth of selectivity of carbon monoxide conversion to hydrocarbons with an increase in MCA frequency from 4 to 8.5 Hz while maximum selectivity reached 91 %. With a further increase in MCA frequency to 11.2 Hz, a decrease (to 83.5 %) in the value of selectivity of carbon monoxide conversion to hydrocarbon products in the FTS process was observed. Therefore, it was recommended to consider the value of the MCA frequency from 6 to 10 Hz as an acceptable range. Maximum yield (73 wt %) of hydrocarbon fraction with a chain length from 5 to 6 carbon atoms was observed for a pressure of 0.3 MPa. The minimum yield was 35 wt % for a pressure of 1.2 MPa. At other pressure values (0.1–0.2 and 0.4–1.1 MPa) of experimental studies, the yield of this fraction varied within 38–52 wt %. A block diagram of experimental-industrial FTS installation based on principles of aerosol nanocatalysis was offered.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Conversion of synthesis gas in aerosol of Fe-Cu-K-catalyst particles at pressures of 0.1–1.0 MPa

Domnin¹,

Glikina

Kudryavtsev³

et al. 2022

EEJET

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“…Adsorption is one of the stages of catalysis, so mechanical activation of MA can affect adsorption as a separate process. Studies of processes using coal as a raw material [14,15] have shown that coal can be mechanically activated. This formed the basis of this work, where ash from coal combustion was activated under controlled conditions.…”

Section: Introductionmentioning

confidence: 99%

Extraction of sulfur (IV) oxide, nitrogen oxides and carbon oxide from flue gases using a sorbent under conditions of its mechanical activation

Kudriavcev,

Zubtsov

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The paper substantiates the feasibility of creating an adsorption technology with controlled activation of the adsorbent for the removal of sulfur dioxide, nitrogen oxides, and carbon from the flue gases of coal-fired power plants. In laboratory conditions, the effect of mechanical activation on the adsorption capacity of ash was studied. It is shown that the controlled mechanical activation is able to increase the adsorption capacity of ash relative to sulfur dioxide by 2.7 times, to nitrogen oxides by 2.1 times, to carbon monoxide by 5 times or more.

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“…Chemical activation of leonardite involves the use of an activating extractant (ZnCl2, H3PO4, NaOH, KOH, etc. ), which is mixed with raw materials under certain extraction conditions and extract humic substances in the form of watersoluble humates [16][17][18][19]. In the case of physical activation, the raw material is activated under the influence of elevated temperatures or mechanical action on the raw material [20,21].…”

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2020

Visnyk agrarnoi nauky

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Studying the influence of the intensity of mechanochemical activation on the process of steam conversion of coal

Cited by 3 publications

References 16 publications

Conversion of synthesis gas in aerosol of Fe-Cu-K-catalyst particles at pressures of 0.1–1.0 MPa

Conversion of synthesis gas in aerosol of Fe-Cu-K-catalyst particles at pressures of 0.1–1.0 MPa

Extraction of sulfur (IV) oxide, nitrogen oxides and carbon oxide from flue gases using a sorbent under conditions of its mechanical activation

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