Reactivity of absorbent prepared from oil palm ash for flue gas desulfurization: Effect of SO2 concentration and reaction temperature

The supported [Bmim]6PMo9V3O40was synthesised by using the ion liquid [Bmim]Cl and heteropoly acid H6PMo9V3O40, and was supported on the active carbon fibre.The results of FT-IR showed that the structure of Ionic liquid cation and anion heteropoly acid on the active carbon fibre did not changed during the synthesising and supporting of the [Bmim]6PMo9V3O40. The catalysts performance of [Bmim]6PMo9V3O40/ACF on Flue Gas Desulfurization was investigated. The investigation was focused on the influence of the capacity of [Bmim]6PMo9V3O40, the oxygen centent, and reaction temperature on [Bmim]6PMo9V3O40/ACF for flue gas desulfurization. The experimental results showed that the desulfurization rate was up to 100%, lasting for 100 minutes,the sulfur capacity was as high as 400 mg/g in 4h, as desulfurization codition for the oxygen centent of 8% and the temperature of 60°C.

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Study on the Technology Conditions of Flue Gas Desulfurization with Organic Solvent

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v1i1.837 ◽

2013 ◽

Vol 1 (1) ◽

pp. 18-26

Author(s):

Wanren Chen ◽

Hua Li ◽

Xiaoshuang Chen

Keyword(s):

Organic Solvent ◽

Flue Gas ◽

Gas Flow ◽

Room Temperature ◽

Flue Gas Desulfurization ◽

Desulfurization Efficiency ◽

Time Of Operation ◽

So2 Concentration

The technology experiment on Flue Gas Desulfurization (FDG) by DMSO method is studied in this paper, and the desulfurization efficiency is set out in various conditions. The results show that the desulfurization efficiency can be over 94% under the condition as follows: the rate of flow of DMSO=100 L/h, L/G＝40～50, absorbent concentration = 100 %DMSO, T=room temperature, the gas flow=60 ml∙min-1, inlet SO2 concentration= 0.1-0.5 %, the time of operation must be controlled in 30 minutes.

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Modeling and Simulation of Sulfur Dioxide Abatement with Ammonia Absorbent in the Spray Scrubber

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.599.404 ◽

2012 ◽

Vol 599 ◽

pp. 404-411 ◽

Cited By ~ 3

Author(s):

Yong Jia

Keyword(s):

Flue Gas ◽

Operating Conditions ◽

Flue Gas Desulfurization ◽

Gas Velocity ◽

Desulfurization Process ◽

Spray Scrubber ◽

Influence Of Ph ◽

So2 Absorption ◽

Gas Ratio ◽

So2 Concentration

In this paper, a model of ammonia-based wet flue gas desulfurization system was developed to simulate the process of absorption of SO2 and oxidation of total sulfite. The influence of pH, liquid-gas ratio, flue gas velocity and SO2 concentration on the desulfurization process were analyzed. The calculated desulfurization efficiency of the ammonia-based WFGD system for 2×210 t•h-1 boilers unit in China were compared to that of corresponding measured ones. The results show that the simulated values agreed well with the measured values for the operating conditions of pH, liquid/gas ratio and SO2 concentration. Corresponding amount of air needed for oxidation of total sulfite formed in SO2 absorption process was also calculated.

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Flue Gas Desulfurization over Copper Oxide Loaded on Complex Carrier of Attapulgite and Activated Carbon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.549.387 ◽

2012 ◽

Vol 549 ◽

pp. 387-390 ◽

Cited By ~ 1

Author(s):

Yong Yang ◽

Hu Peng Yu ◽

Jin Long Jiang ◽

Yun Hua Qian

Keyword(s):

Activated Carbon ◽

Copper Oxide ◽

Reaction Temperature ◽

Flue Gas ◽

Fixed Bed ◽

Experimental Results ◽

Flue Gas Desulfurization ◽

Impregnation Method ◽

Desulfurization Activity

Sorbent of CuO loaded on complex carrier of attapulgite and activated carbon was prepared by incipient impregnation method for flue gas desulfurization. The effects of CuO loading, reaction temperature and components in flue gas on the desulfurization performance were investigated in a fixed-bed quartz reactor. The experimental results indicate that the sorbents of 20 wt% CuO loading has a high desulfurization activity under conditions of reaction temperatures 200-250 oC and 21000 h-1, and O2 is necessary for the high desulfurization activity of the sorbents.

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Preparation of Calcium Sulfate Whisker by Hydrothermal Method from Flue Gas Desulfurization (FGD) Gypsum

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.268-270.823 ◽

2012 ◽

Vol 268-270 ◽

pp. 823-826 ◽

Cited By ~ 2

Author(s):

Liu Shuan Yang ◽

Xiao Wang ◽

Xin Feng Zhu ◽

Ling Zhi Du

Keyword(s):

Hydrothermal Method ◽

Reaction Temperature ◽

Flue Gas ◽

Calcium Sulfate ◽

Raw Materials ◽

Flue Gas Desulfurization ◽

Minor Effect ◽

Fgd Gypsum ◽

Excellent Quality ◽

Calcium Sulfate Whisker

In this paper, utilizing the purified flue gas desulfurization (FGD) gypsum as raw materials to prepare calcium sulfate whisker (CSW) by hydrothermal method, the effects of the dosage of crystal modifier, reaction temperature, pH, etc. on the crystal morphology of CSW were discussed. The results show that the purified FGD gypsum can replace high-quality natural gypsum for the preparation of the CSW with excellent quality. The dosage of crystal modifier (K2SO4) and reaction temperature have a significant effect on the morphology and aspect ratio of CSW, while pH and reaction time have a minor effect. When the dosage of K2SO4 is 3 wt%, pH is adjusted to 2 and the solution is reacted at 130 °C for 60 min, CSW with excellent quality can be obtained.

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Manganese Ore-based Wet Flue-Gas Desulfurization: A Review

Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) ◽

10.2174/2405520413666200122092300 ◽

2020 ◽

Vol 13 (3) ◽

pp. 180-193

Author(s):

Yutong Liu ◽

Wenju Jiang ◽

Lu Yao ◽

Lin Yang ◽

Xia Jiang

Keyword(s):

Particle Size ◽

Flue Gas ◽

Flue Gas Desulfurization ◽

Background Information ◽

Future Research ◽

So2 Removal ◽

The Future ◽

Desulfurization Efficiency ◽

Mn Ore ◽

So2 Concentration

The removal of SO2 from flue gases is necessary for eliminating haze and controlling acid rain. However, developing the traditional wet and dry flue-gas desulfurization (FGD) is challenging due to the disposal issue of several byproducts. Manganese (Mn) orebased wet FGD possesses many advantages, including good desulfurization property, low cost, and high economic benefit. The environment friendliness and reusability of MnSO4 provide new ideas and methods in the future research direction of FGD. This review summarizes the background information of Mn ore slurry desulfurization, the desulfurization mechanism, the technological process, and the desulfurization devices. The role of operating parameters, such as temperature, liquid/solid ratio, pH, SO2 concentration, and particle size, in the desulfurization efficiency and manganese leaching rate are also discussed. The temperature (20°C-80°C) has exerted little effect on the desulfurization efficiency, whereas a low pH value is beneficial for SO2 removal. Moreover, a low inlet SO2 concentration and small particle size are beneficial for SO2 removal. The control and digestion techniques related to the byproduct (manganese dithionate) are also presented, along with the future development direction of Mn ore-based wet FGD in different industries.

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Use of Flue Gas Desulfurization Gypsum, Construction and Demolition Waste, and Oil Palm Waste Trunks to Produce Concrete Bricks

Crystals ◽

10.3390/cryst10080709 ◽

2020 ◽

Vol 10 (8) ◽

pp. 709 ◽

Cited By ~ 1

Author(s):

Lalitsuda Phutthimethakul ◽

Park Kumpueng ◽

Nuta Supakata

Keyword(s):

Compressive Strength ◽

Water Absorption ◽

Flue Gas ◽

Oil Palm ◽

Power Plants ◽

Construction And Demolition Waste ◽

Flue Gas Desulfurization ◽

Demolition Waste ◽

Fgd Gypsum ◽

Concrete Production

This research aims to study the utilization of waste from power plants, construction and demolition, and agriculture by varying the ratios of flue-gas desulfurization (FGD) gypsum, construction and demolition waste (CDW), and oil palm trunks (OPT) in concrete production. This research used these as the raw materials for the production of concrete bricks of 15 × 15 × 15 cm. There were 12 ratios of concrete brick, fixing 5.5 wt% of FGD gypsum to replace Portland cement and substituting coarse sand with 0 wt%, 25 wt%, 50 wt%, or 75 wt% of CDW, and gravel with 0 wt%, 0.5 wt%, and 1 wt% of OPT. The initial binder:fine aggregate:coarse aggregate ratio was 1:2:4 and the water to cement ratio was 0.5, curing in water at room temperature for 28 days. Then, all concrete brick specimens were tested for compressive strength and water absorption. From the experiment, it was found that the highest compressive strength of concrete brick specimens was 45.18 MPa, which was produced from 5.5% gypsum without CDW and OPT, while 26.84 MPa was the lowest compressive strength obtained from concrete bricks produced from 5.5% FGD gypsum, 75% CDW, and 1% OPT. In terms of usage, all proportions can be applied in construction and building work because the compressive strength and water absorption were compliant with the Thai Industrial Standard TIS 57-2530 and TIS 60-2516.

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