Development of Enormous PSA System for the Recovery of Carbon Dioxide from Blast Furnace Gas

Saima, Hitoshi; Mogi, Yasuhiro; Haraoka, Takashi; Shigaki, Nobuyuki

doi:10.3811/jjmf.29.296

Cited by 2 publications

(5 citation statements)

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“…The reduction in vacuum pump power consumption is estimated to be achieved by the effect of the increase of the minimum gas desorption pressure from 6 to 10 kPaA observed in Figure 16. The durability of Zeolite 13X adsorbent under the same feed gas condition was already verified by a pilot-scale CO 2 -PSA operation in our previous work [5], and therefore, the superior performance of the larger size adsorbent is expected to gives us a great advantage for a long term operation of CO 2 -PSA.…”

Section: Co 2 -Psa Pilot Testsmentioning

confidence: 52%

“…The volumetric mass transfer coefficient in the outer layer of the pellet K 1 can be estimated by Yoshida's Equation (5), which includes both the Schmidt number Sc and the Reynolds number Re [26]. By definition, the Reynolds number is proportional to the gas velocity u.…”

Section: Discussionmentioning

confidence: 99%

“…The selection of the CO 2 adsorbent is the first important step in the design of a high efficiency CO 2 -PSA system. In our previous study, we evaluated the isotherms of various types of CO 2 adsorbents and selected Zeolite 13X (Zeolum F-9HA, Tosoh Corp., Tokyo, Japan) for CO 2 -PSA system design [5]. Zeolite 13X has both a higher CO 2 working capacity in the CO 2 -PSA pressure swing range and higher CO 2 selectivity against other impurity gases such as CO and N 2 .…”

Section: Preparation Of Various Shapes Of Adsorbentsmentioning

confidence: 99%

“…Figure 1 shows the outline of the COURSE50 project. The COURSE50 project consists of two main technologies, "Hydrogen reduction in blast furnace" and "CO 2 separation process from blast furnace gas" [5], as well as the other support technologies to facilitate these two processes [6,7]. The CO 2 separation process is shown on the right in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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Reduction of Electric Power Consumption in CO2-PSA with Zeolite 13X Adsorbent

Shigaki¹,

Mogi²,

Haraoka³

et al. 2018

Energies

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Reduction of CO 2 from waste gases from various industries is now desired worldwide. As a technology for separating CO 2 from mixed gases, Pressure Swing Adsorption (PSA) is one of the practical processes that are widely used at present owing to the simplicity of its gas separation mechanism. In order to reduce the cost of CO 2 separation, a further reduction of the running cost of CO 2-PSA operation is required. Among all the utilities used in CO 2-PSA, electric power consumption has the greatest impact, especially in cases where the pressure swing range between gas adsorption and gas desorption is large. Electric power consumption increases significantly when the pressure loss inside the adsorber has reached a non-negligible level. Changing the adsorbent pellet size is a convenient method for reducing pressure loss, but its effect on CO 2-PSA performance was unclear. Therefore, in this work, the effects of the size of the adsorbent pellets on both the gas adsorption behavior and the electric power consumption in CO 2-PSA were evaluated experimentally. From the results of laboratory-scale CO 2-PSA experiments and gas adsorption rate measurements, it was observed that the effect of the pellet size appeared only in the early stage of the gas adsorption step and was not dominant when the cycle time was sufficiently long. Subsequently, pilot-scale CO 2-PSA experiments with the same CO 2 throughput were also conducted, and as a result, the electric power consumption of a vacuum pump was lowered by 15% in case of using d = 3.0 mm larger adsorbent pellets compared to the results with d = 1.5 mm smaller adsorbent pellets.

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Section: Co 2 -Psa Pilot Testsmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Section: Preparation Of Various Shapes Of Adsorbentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduction of Electric Power Consumption in CO2-PSA with Zeolite 13X Adsorbent

Shigaki¹,

Mogi²,

Haraoka³

et al. 2018

Energies

Self Cite

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show abstract

“…The demonstration of this technology up to TRL6-7 has been carried out during the consecutive EU programmes CACHET, CAESAR, and STEPWISE [14]. A wide range of additional emerging CO 2 capture technologies have been proposed to target gas streams in the iron and steel industries, either as post-combustion or as a top gas recycle concepts (advanced solvents [15], membranes [16], new solid sorbents for Pressure Swing Adsorption and Vacuum Pressure Swing Adsorption (PSA/VPSA) [17], chemical looping and calcium looping [18,19]). All these technologies present issues regarding stability of functional materials, role of impurities, energy consumption, retrofitability and need of rigorous quantitative estimation of cost and overall process efficiencies.…”

Section: Introductionmentioning

confidence: 99%