Heat exchange and water recovery experiments of flue gas with using nanoporous ceramic membranes

Chen, Haiping; Zhou, Yanan; Cao, Sutian; Li, Xiang; Su, Xin; An, Liansuo; Gao, Dan

doi:10.1016/j.applthermaleng.2016.08.191

Cited by 96 publications

(54 citation statements)

References 9 publications

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“…In the approximate calculation of water dew point, flue gas can be generally regarded as constant and ideal gas. When the study object is the non‐permeation tube or the macroporous membrane tube, according to the relationship between water vapor and saturated vapor pressure, the formula used for calculating the dew point is as follows:

T_{sat} = 98.18 \times {(100 y_{H_{2} O})}^{0.1441} + 182.36 .

According to Haiping et al, when the study object is the nanoporous ceramic composite membrane tube under various operating conditions, capillary condensation occurs and vapor condenses in the pores, thus forming condensates that prevent non‐condensable gases from passing through the membrane pores. Here is the Kelvin equation:

italicIn \frac{P_{1}}{P_{0}} = - \frac{4 italicσM}{rρRT} italiccosφ .

In the equation, a relationship exists among the pore size, flue gas temperature, and the saturated vapor pressure in the capillary.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…If the external membrane temperature is lower than water dew point, water vapor in flue gas will condense. To verify whether condensation had occurred, calculating the temperature of the membrane outer surface is necessary by using Equation 8.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…The effects of inlet gas conditions and permeation side conditions on the recovery performance were experimentally investigated . In Haiping et al, an internally coated ceramic composite membrane was selected for experimental study. The results showed that the maximum water and heat recovery efficiency were higher than 80% and 40%, respectively .…”

Section: Introductionmentioning

confidence: 99%

“…In Haiping et al, an internally coated ceramic composite membrane was selected for experimental study. The results showed that the maximum water and heat recovery efficiency were higher than 80% and 40%, respectively . In Yanan et al, a theoretical model for the process of recovering water and heat by using ceramic membranes was established .…”

Section: Introductionmentioning

confidence: 99%

“…The results showed that the maximum water and heat recovery efficiency were higher than 80% and 40%, respectively. 8 In Yanan et al,9 a theoretical model for the process of recovering water and heat by using ceramic membranes was established. 9 The results showed that on the inlet gas side, heat transfer caused by mass transfer accounted for most.…”

Section: Introductionmentioning

confidence: 99%

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The investigation of desulphurization and water recovery from flue gas using ceramic composite membrane

Gao

Zhang

et al. 2019

Int J Energy Res

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Summary Using nanoporous ceramic composite membranes to remove sulphur dioxide and to recover water vapor in flue gas is a new method, and this paper studied the effects of sulphur dioxide on the water recovery process. In this study, the outer‐side coating of hollow nanoporous ceramic composite membrane is selected as the study object. In the membrane module for desulphurization, one end of membrane is closed to create the high‐pressure environment inside membrane to ensure that the cooling water in the membrane penetrates the outer surface of the membrane to form a stable water film which can absorb sulphur dioxide from flue gas. In the membrane module for recovering water, using a vacuum pump to create micro‐negative pressure environment inside membrane, and then water vapor and condensate can penetrate through the membrane under pressure difference. Based on the ceramic composite membrane module, an integrated experimental platform for desulphurization and water recovery is constructed, and the mathematical model for predicting water recovery performance is established. According to the experimental and theoretical results, the mathematical model can predict the water recovery performance of the ceramic composite membrane.

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T_{sat} = 98.18 \times {(100 y_{H_{2} O})}^{0.1441} + 182.36 .

italicIn \frac{P_{1}}{P_{0}} = - \frac{4 italicσM}{rρRT} italiccosφ .

In the equation, a relationship exists among the pore size, flue gas temperature, and the saturated vapor pressure in the capillary.…”

Section: Mathematical Modelmentioning

confidence: 99%

Section: Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The investigation of desulphurization and water recovery from flue gas using ceramic composite membrane

Gao

Zhang

et al. 2019

Int J Energy Res

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Water recovery from flue gas using polyether block amide 2533/sulfonated poly(ether ether ketone) composite membrane

Zhang

Wang

Liu

et al. 2021

J of Applied Polymer Sci

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Recycling water from flue gas of coal‐fired power plants is of great significance to save energy and water resources and reduce environmental pollution. In the present work, two potential polymers (polyether block amide 2533(PEBAX 2533) and sulfonated poly(ether ether ketone) (SPEEK)) were investigated and showed high water vapor permeability and selectivity, respectively. Combined with the advantages of the two materials, a novel PEBAX 2533/SPEEK composite membrane with an ultra‐thin SPEEK selection layer on the outer surface of the high permeable PEBAX 2533 layer was prepared by dip coating. The composite membranes were assembled into a membrane capsule module and tested directly in artificial and real flue gas. The condensed water vapor fluxes were 1006.9 g/m2.h in artificial flue gas and 600–900 g/m2.h on average in real flue gas during a period of 30 days, exhibiting good water vapor permeability and durability in real flue gas.

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Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

2020

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Summary In this study, the water recovery performance from flue gas with ceramic membrane tubes of different pore sizes 30, 50, and 200 nm was experimentally studied. The effects of flue gas temperature, flue gas flow rate, water coolant temperature, and water coolant flow rate on the water recovery performance were analyzed. In addition, in the experimental study of SO2 permeability, the pH of the water coolant inlet and outlet was measured using a pH meter to analyze the SO2 permeability of ceramic membranes during the water recovery process. The results show that the water recovery performance of the 50 nm pore size ceramic membrane is better than that of the other two types of ceramic membrane in most cases. The maximum amount of reclaimed water and the highest water recovery rate are 4.82 kg/(m2·h) and 80.3%, respectively. Under the same SO2 concentration condition, the SO2 permeation flux of the 30 nm pore size ceramic membrane is smallest, and that of the 200 nm membrane is the largest. When the SO2/N2 mixed gas flow rate is 6 L/min, the SO2 permeation flux of the 30 and 200 nm membranes is 0.407 and 0.635 mmol/(m2·h), respectively. The ceramic membrane with smaller pore size can block more SO2 permeation, while the ceramic membrane with larger pore size can remove SO2 better.

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Heat exchange and water recovery experiments of flue gas with using nanoporous ceramic membranes

Cited by 96 publications

References 9 publications

The investigation of desulphurization and water recovery from flue gas using ceramic composite membrane

The investigation of desulphurization and water recovery from flue gas using ceramic composite membrane

Water recovery from flue gas using polyether block amide 2533/sulfonated poly(ether ether ketone) composite membrane

Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

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Heat exchange and water recovery experiments of flue gas with using nanoporous ceramic membranes

Cited by 96 publications

References 9 publications

The investigation of desulphurization and water recovery from flue gas using ceramic composite membrane

The investigation of desulphurization and water recovery from flue gas using ceramic composite membrane

Water recovery from flue gas using polyether block amide 2533/sulfonated poly(ether ether ketone) composite membrane

Experimental study on water recovery and SO 2 permeability of ceramic membranes with different pore sizes

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Product

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Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes