Research of the SNCR Process and its Application

Zhong, Li; Liu, Xue Min; Ding, Yang; Qin, Wen Jun; Yang, Gen Sheng; Zhang, Da Long

doi:10.4028/www.scientific.net/amr.953-954.1307

Cited by 10 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, the application of fly ash is focused on fly ash after denitrification. The requirements for nitrogen reduction has led to the introduction of denitrification methods [14]. The denitrification process causes the nitrogen compounds to remain bound in the fly ash in various forms.…”

Section: Introductionmentioning

confidence: 99%

X-ray Diffraction of Alkali-Activated Materials with Cement By-Pass Dust

Vojvodíková¹,

Procházka²,

Boháčová³

2021

Crystals

View full text Add to dashboard Cite

Alkali-activated materials are alternative building binders, where secondary raw materials are processed. The possibility of using landfilled waste materials in the building industry increases their potential application in construction practice, and they are therefore subject to extensive research, especially in recent years. This paper briefly summarizes the interesting results of an experiment aimed at verifying the possibility of applying cement by-pass dust (CBPD) in the preparation of alkali-activated materials. The research was focused on the possibilities of using these wastes for the preparation of small elements of garden architecture. This work also briefly summarized the interesting results of an experiment aimed at verifying the possibility of applying cement by-pass dust (CBPD) in the preparation of alkali-activated materials. In the experiment, a mixture of blast furnace granulated slag, fly ash and cement by-pass dust was alkali activated with sodium metasilicate.

show abstract

Section: Introductionmentioning

confidence: 99%

X-ray Diffraction of Alkali-Activated Materials with Cement By-Pass Dust

Vojvodíková¹,

Procházka²,

Boháčová³

2021

Crystals

View full text Add to dashboard Cite

show abstract

“…Requirements for nitrogen reduction lead to the introduction of denitrification methods. [14] Denitrification processes causes the nitrogen compounds to remain bound in the fly ash in various forms. This phenomenon has a positive effect on the air, but in the field of the application of fly ash to building materials, it brings new research topics, as this modification also changes some properties of the original material.…”

Section: Introductionmentioning

confidence: 99%

X-ray Diffraction of Alkali-Activated Materials with CBPD

Vojvodíková¹,

Procházka²,

Boháčová³

2021

Preprint

View full text Add to dashboard Cite

Alkali-activated materials are alternative building binders, where secondary raw materials are processed. Possibility to use landfilled waste materials in their preparation, increases their potential application in construction practice, and therefore they are subject to extensive research, especially in recent years. This paper briefly summarizes interesting results of an experiment aimed at verifying the possibility of applying cement by-pass dust (CBPD) in the preparation of alkali-activated materials. The research work was focused on the possibilities of using these wastes for the preparation of small elements of garden architecture. The paper briefly evaluates in particular the results of X-ray diffraction, which were subjected to three types of binder pastes differing in the amount of used activator. In the experiment, a mixture of blast furnace granulated slag, fly ash and cement by-pass dust was alkali activated with sodium metasilicate.

show abstract

Rapid precipitation of vanadium from solution using melamine as precipitant with high efficiency

Wang,

Yang,

et al. 2024

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUNDSelective catalytic reduction (SCR) can effectively remove NOx from flue gas in a coal‐fired power plant. As the core of SCR technology, the catalyst has a limited lifespan. The process of reducing acid leaching and roasting water leaching can efficiently extract vanadium and tungsten from spent SCR catalyst. For vanadium recovery in solution, the traditional vanadium precipitation process by NH4Cl has the disadvantages of consuming high precipitant dosage and producing large amounts of waste water.RESULTSThis study focused on the vanadium precipitation process using a solution containing vanadium obtained from adopting some steps to handle the spent SCR catalyst. First, melamine was screened out as the vanadium precipitant. Then, the vanadium precipitation conditions were optimized as follows: solution pH value of 1.0, n(C3H6N6)/n(V) = 0.8, 110 °C and 30 min. Under the best precipitation conditions, the vanadium precipitation efficiency of melamine can reach 99.32%. Finally, the mechanisms of vanadium precipitation by NH4Cl and melamine were discussed, respectively.CONCLUSIONThe results showed that the vanadium precipitation process by NH4Cl followed the chemical reactions between NH4+ and vanadium ions, while the vanadium precipitation process by melamine followed the redox and complexation reactions which essentially belonged to the types of chemical adsorption. The vanadium precipitation product was roasted at 550 °C for 2 h to obtain the vanadium product. The main component of the vanadium product was V2O5, with a purity of 93.27 wt%. The total recovery efficiency of vanadium from spent SCR catalyst was 78.24%. © 2024 Society of Chemical Industry (SCI).

show abstract

Research of the SNCR Process and its Application

Cited by 10 publications

References 15 publications

X-ray Diffraction of Alkali-Activated Materials with Cement By-Pass Dust

X-ray Diffraction of Alkali-Activated Materials with Cement By-Pass Dust

X-ray Diffraction of Alkali-Activated Materials with CBPD

Rapid precipitation of vanadium from solution using melamine as precipitant with high efficiency

Contact Info

Product

Resources

About