Abstract:
Provided are a continuous oxygen adsorption and desorption device and an continuous oxygen adsorption and desorption method using the device, and more particularly, an continuous oxygen adsorption and desorption device for producing high-purity oxygen products by using a plurality of adsorption and desorption towers filled with an oxygen-selecting adsorption and desorption agent selected from BaMg(CO3)2 particles or particles in which either MgCO3 or Mg(OH)2 has been attached to the outside of BaMg(CO3)2, and also a continuous oxygen adsorption and desorption method using the device.
Abstract:
Provided are a continuous oxygen adsorption and desorption device and an continuous oxygen adsorption and desorption method using the device, and more particularly, an continuous oxygen adsorption and desorption device for producing high-purity oxygen products by using a plurality of adsorption and desorption towers filled with an oxygen-selecting adsorption and desorption agent selected from BaMg(CO3)2 particles or particles in which either MgCO3 or Mg(OH)2 has been attached to the outside of BaMg(CO3)2, and also a continuous oxygen adsorption and desorption method using the device.
Abstract:
This invention relates to a carbon dioxide absorbing composition including a sterically hindered alkanolamine, and to a method and apparatus for absorbing carbon dioxide using the same, wherein in a process and apparatus for absorbing and recovering carbon dioxide from a gas mixture including carbon dioxide, a solid-phase bicarbonate crystal including high-concentration carbon dioxide is crystallized from a carbon dioxide absorbing composition having absorbed carbon dioxide and is then selectively separated, thereby efficiently recovering and regenerating carbon dioxide.
Abstract:
Disclosed is a method of removing calcium from a hydrocarbon fraction using an extraction agent including 2-oxopropanal or derivatives thereof, the method including (S1) adding a hydrocarbon fraction with an extraction agent including 2-oxopropanal or derivatives thereof to give a mixture, (S2) converting an oil-soluble calcium compound into a water-soluble calcium compound by reacting the hydrocarbon fraction with the 2-oxopropanal or derivatives thereof, and (S3) removing the water-soluble calcium compound.
Abstract:
This invention relates to a carbon dioxide absorbing composition including an antisolvent, and to a method and apparatus for absorbing and regenerating carbon dioxide using the same, wherein in a process and apparatus for absorbing carbon dioxide from a gas mixture including carbon dioxide such as a flue gas of a coal-fired power plant and separating a bicarbonate slurry including a large amount of carbon dioxide so as to be regenerated at high pressure, a bicarbonate slurry production yield can be increased to thereby reduce the cost for sensible heat, latent heat and regeneration energy necessary for regeneration, cooling and heating of the carbon dioxide absorbing solution.
Abstract:
A hybrid process comprising an adsorption process and a distillation process for the separation of butene-1 from a C4 hydrocarbon mixture gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The hybrid process comprises introducing a gaseous C4 mixture into the adsorption tower loaded with adsorbents which adsorb olefins selectively to discharge C4 paraffins to the outlet of the tower, desorbing C4 olefins selectively adsorbed in the adsortion tower to produce high purity C4 olefins mixture gas in which isobutane and normal butane was removed, and separating the high C4 olefins mixture gas (a mixture of butene-1, trans-2-butene, cis-2-butene, and a trace amount of C4 paraffins) via distinction to obtain high purity butene-1 including a trace amount of isobutane in the top of the distillation tower and obtain a mixture gas including trans-2-butene, cis-2-butene and a trace amount of normal butane in the bottom of the tower.
Abstract:
The present invention provides a method for inhibiting structure II (sII) gas hydrate formation which comprises treating (i) a gas hydrate inhibitor and (ii) at least one additive selected from the group consisting of N-hexyl-N-methyl-pyrrolidinium tetrafluoroborate (HMP-BF4), M-hydroxyethyl-N-methyl-pyrrolidinium tetrafluoroborate (HEMP-BF4), N-ethyl-N-methyl-immidazolium tetrafluoroborate (EMIM-BF4) and N-ethyl-N-methyl-pyrrolidinium tetrafluoroborate (EMP-BF4) in water, which is in contact with a gas mixture of forming structure II gas hydrate.The additives according to the present invention can exhibit the same or greater effects of inhibiting the formation of the structure II gas hydrate through an interaction, even when the amount of a gas hydrate inhibitor is reduced.
Abstract:
Disclosed are an adsorption type cooling apparatus using nanoporous aluminophosphate as a water vapor adsorbent, and an operation method thereof. Specifically, the adsorption type cooling apparatus uses nanoporous aluminophosphate exhibiting a high dynamic water vapor adsorption capacity as a water vapor adsorbent. The adsorption type cooling apparatus includes at least two adsorption towers containing a water vapor adsorbent, a condenser alternately connected to the adsorption towers, and an evaporator alternately connected to the adsorption towers, wherein the water vapor adsorbent is nanoporous aluminophosphate containing aluminum, phosphorous, and oxygen.
Abstract:
A method and apparatus for the separation of C4 olefins (butene-1, trans-2-butene, cis-2-butene, etc.) and C4 paraffins (normal butane, isobutane, etc) from a C4 hydrocarbon mixed gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The apparatus includes several adsorption towers loaded with an adsorbent which selectively adsorb olefins and two distillation towers for the separation of the mixture gases of olefins/desorbents and paraffins/desorbents respectively. The basic operating process of the adsorption tower comprises an adsorption step of selectively adsorbing C4 olefin from the feeding mixture, a C4 olefin rinse step of removing a small amount of C4 paraffins adsorbed together with C4 olefins, and a desorption step of desorbing C4 olefins by using a desorbent, and further comprises pressure equalization step, concurrent depressurization step, and accumulation pressure step to increase the yield and concentration of olefins depending on the operation pressure of the adsorption tower.