A flow rate of 500,000 standard cubic feet per day (SCFD), or 14,158,000 standard liters per day (SLPD), or 9832 standard liters per minute (SLPM), or 19.3 kilograms per minute of CO2 produced from a combustion source was used for the thermal analysis presented below. Privacy Policy Commercial freezers, To cool a 1930 kg sorbent bed from 200 C. to 40 C. requires 330,416 kJ of heat removal, equivalent to 917.8 kW of thermal energy removal. Centrifuges, Micro Matic USAn Factor Rep Ms. Loucretia Woosley 2364 Simon Court Brooksville, FL 34604 Ph: 352-727-1651 Email: law@micro-matic.com Drafting Solutions from Keg to Glass. FIG. 13 Experiment 4: Regeneration Results, FIG. Each absorbent bed contains 1930 kilograms of sorbent to accommodate the specified six minute cycle time. CO2 Recovery Systems, By heating the sorbent to a sufficient temperature (greater than about 200 C.), the sorbed CO2 in vessel (2) is released and collected in nearly pure gaseous form. Tap handles, The results (FIGS. During regeneration of CO2 by H2O, heat will be generated by H2O sorption onto the sorbent.
Water condensed and cooled from combustion gas (19) is removed from the system. The heat input to desorb water from the absorbent is 396,688 kJ.
2. In one embodiment the carbon dioxide source is flue gas. The cooled exhaust gas is next passed through a pressure boost blower (11) prior to introduction to vessel (1), the CO2 sorption column. The gas can be changed by switching valves as we have done for these initial experiments, or the sorbent bed can be moved between vessels. 2 uses a conventional stationary internal combustion engine, gas turbine, or other combustion source operating on a wide range of gaseous, liquid, or solid fuels is used to power an electrical generator or is used for other purposes. The combustion source exhaust (18) contains sufficient heat to satisfy the thermal requirements to raise the sorbent in vessel (2) to greater than 200 C. (including the heat of desorption of CO2 and the heating of the sorption media). Reactor system set-up: To simulate the entire system, dry carbon dioxide blended with nitrogen from pressurized cylinders was used instead of combustion source exhaust. Insulation covered the entire reactor. Results from these subsequent cycles are summarized below. Supplier of: O7o}7c7YXBk1]|PN0Pu-gZ{VYmece%rN9|u]Rs9PR+QBOS)x Therefore, the starting condition before regeneration by water injection for the second method is the same as that for the first method using hot, recirculating CO2. Such power systems could utilize fuel combustion, nuclear power, solar power, wind power, tidal power, hydroelectric power, or geothermal power, among others. 
=BOS)N)kMf=z Ae Brewing filtration, Glycol chillers, Transfer pumps, National Refrigeration Products (NRP), located in Langhorne, PA, is a leading manufacturer of refrigerant recovery and recycling equipment, including small portable units and large industrial/commercial machines. }mHi.m&-Y~-5E?OX,*\~Fbkao[E}#9bWh"lQ6i0G#s|aG"lB#. Privacy Policy Ideally, one molecule of water will displace one molecule of carbon dioxide, resulting in the requirement that 18 grams of water will displace 44 grams of carbon dioxide. bpgK7`;xvzlh[xc.UaS53n'^TzoO|/^P|}*};yQ?EUOa`%+x GS~>cp7rC&+v2r$A Refrigeration Systems, Copyright 2012 - 2022 Kinnek Business Solutions LLC, Made in NYC Because the sorption characteristics for the second method are virtually the same as that for the first method, the enthalpy of CO2 sorption and bed temperature rise are the same. This is a member-only area. The net effect of water sorption and carbon dioxide desorption results in a temperature rise in the sorbent bed, which reduces the heating requirement in vessel (3). )\6B}44Sc^&czb^kgs>Eo)wR,O^^1=Mc_c('S?YX.CNs A set of valves sequentially changes the combustion gas flow path so that each of the three vessels operates in sorption, CO2 regeneration, and cooling modes. 6, 7 and 8) confirmed that carbon dioxide can continually be sorbed during multiple cycles. In one embodiment the molecular sieve bed is cooled after regeneration using the nitrogen-rich and CO2-poor gas remainder exiting from the sorption bed. Compressed gases used to comprise simulated combustion source exhaust gases were available from a commercial supplier as well. The combustion source or turbine exhaust gas passes through a series of three identical vessels (1, 2, 3) after temperature and flow adjustments as shown in FIG. FIG. 4) shows the results of the regeneration process. The cooling air is exhausted (10) to atmosphere. A novel method of capturing carbon dioxide from combustion exhaust on an absorbent and then regenerating the absorbent for recovery, storage, use, or sequestration of concentrated carbon dioxide is described in another embodiment. During the steam injection step, the absorbent bed temperature rose from about 50 C. to as high as about 250 C. due to heat of sorption of water vapor. Carbon dioxide is used in the food industry in carbonated beverages, and flash drying. For this experiment the sorption process (FIG. The process was stopped when the bottom of the reactor reached 200 C. The next chart (FIG. 10) and cooling (FIG. CO2 Recovery Systems, Provisional Application No. Under these regulations, it may not be possible to operate coal fired power plants at all unless a substantial fraction of their carbon dioxide emissions can be captured. Remaining water is discharged from the system (14).
5) shows the results of the cooling process.
Shown in the chart are the temperature profile above the reactor, at the top, middle and bottom of the reactor, and below the reactor. This first chart (FIG. The total energy input to remove water used to regenerate the absorbent is therefore 434,273 kJ. The gas composition sensor and gas chromatograph used for calculations were also commercially available. Minor amounts of excess oxygen and part-per-million levels of combustion byproducts such as carbon monoxide, nitrogen oxides, and sulfur oxides are also present in the exhaust gases. The CO2 is preheated to 400-450 C. prior to flowing over the sorbent bed. The second chart (FIG. The commercial CO2 market is thriving.
After CO2 sorption in the first vessel, the absorption vessel (1) is configured to be operated as a regenerator vessel (2). 1 would be used. New regulations require reductions in the carbon dioxide released by power plants. The scouting experiments verified that CO2 could be released from the molecular sieve upon introduction of water. After absorption of CO2, the absorbent is heated in a recirculating flow of CO2 such that the temperature of the absorbent can be increased from approximately 97 C. to about 200C, at which temperature CO2 is released from the absorbent. and
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For regeneration of the absorbent bed via the second method, water (in the form of liquid water or steam) is injected and dispersed throughout the absorbent bed to displace CO2. 2004-2022 FreePatentsOnline.com.
In practice, more water may be needed (two, three, or more times the ideal amount) if the water is sorbed on unoccupied absorbent sites before it displaces sorbed carbon dioxide.
Again, the results show that the sorbent bed can capture the carbon dioxide (FIG. 9) stayed at 50 liters per minute but the regeneration (FIG. The direction of flow was upward to remove the heat quickly and was stopped when the top of the reactor was below 50 C. Also shown in the chart is the volume percent CO2, which shows a small amount of carbon dioxide only within the first 20 seconds indicating nearly complete recovery of CO2 during regeneration. 7 Experiment 2: Regeneration Results, FIG. A commercially-available molecular sieve adsorbent used was used for experiments described herein. The combustion exhaust gas cooled in such a manner minimizes additional cooling required for removal of water vapor prior to the CO2 sorption step. The surge tank (9) assists in pressure control and making the appropriate recycle rate for the cooling step. Ice machines, Heat input to raise the absorbent temperature from 232 C. to 250 C. is 37,855 kJ. Therefore, the absorbent is free of CO2 and H2O and can be prepared for further sorption by cooling. CO2 Recovery Systems, CO2 (21) is collected from the sorbent regeneration system as a concentrated product. We'll sign you in! Dobbins is a distributor for all major brands of sanitary food and pharma processing equipment. In a simplified example, if the average temperature of the indirectly heated CO2 used for desorption is 550 C. and the average temperature of the CO2 exiting the vessel is 200 C., a recirculating flow of dry CO2 in the amount of 76,440 SLPM is required. The dimension of the cylindrical reactor was ten inches tall by three inches diameter. Pasteurizers, 62/011,002 filed Jun. 12) and then can be regenerated with pre-heated carbon dioxide (FIG.
In summary, the thermal analysis for the first method for CO2 capture shows that sufficient energy is available to perform the required hot CO2 regeneration method. Ideally, the regeneration flow direction would be opposite from that used for sorption, although this is not critical to the overall results obtained. Typical molecular sieves, activated carbons, and other CO2 absorbents can be regenerated thermally (as in the first method above). The CO2 depleted gas exhausting from sorption vessel (1) is cooled and directed through the cooling vessel (3). An important aspect of the present invention is a process for recovering carbon dioxide from combustion exhaust gases. Explore top suppliers for carbon dioxide recovery systems. Welders,
The released CO2 combines with the recirculating CO2 and is drawn off for storage by cooling (12), compression, and/or liquefaction) (21).
Operating cycle times for absorption, regeneration, and cooling are identical so that the engine or turbine exhaust gases are always directed to the vessel in CO2 sorption mode. Dry, cool combustion gas (12) collected in this manner is passed through a blower (11) to provide a pressure boost to overcome pressure drop in sorbent vessel (1). A cycle time of six minutes is specified for each step (CO2 sorption, CO2 regeneration, and absorbent cooling) to capture an amount of CO2 equal to 6 weight percent of the absorbent present.
147 0 obj <> endobj 172 0 obj <>/Filter/FlateDecode/ID[<66977977B7694A8F8728DA20CE245C44>]/Index[147 42]/Info 146 0 R/Length 112/Prev 147051/Root 148 0 R/Size 189/Type/XRef/W[1 2 1]>>stream & Terms of Use. This would bring the absorbent temperature from 97 C. to 232 C. The next step after regeneration of CO2 by H2O is to remove the water used to displace CO2 from the absorbent. For this temperature rise to occur in the 6 minute cycle time, a total energy input of 330,874 kJ is required (118,169 kJ to release sorbed CO2 and 212,705 kJ to heat the absorbent particles). Minor amounts of excess oxygen and part-per-million levels of combustion byproducts such as carbon monoxide, nitrogen oxides, and sulfur oxides are also present in the exhaust gases. Pioneer Energys CO2 Craft Brewery Recovery System can recapture about five tons of carbon dioxide per month, enough for a brewery that generates up to about 60,000 barrels per year, and units can be stacked to increase that capacity. Note also that any CO2 remaining in the exhaust gas after absorption of CO2 will be sorbed during the cooling step, thereby enabling nearly complete capture of CO2 from the exhaust source. Sterilizing equipment, Supplier of: The total available thermal power from cooling the combustion exhaust gas from 600 C. to 300 C. is about 759 kW. The energy balance for the second method of CO2 capture is based on the same combustion conditions described above for the first method. This is used for solid/liquid or liquid/liquid separation. The entire disclosures of all documents cited throughout this application are incorporated herein by reference.
The dry nitrogen was introduced at about 500 C. during four separate two minute segments. Another blower (15) is used to recycle CO2-rich gas recycled to vessel (2) for the purpose of hot CO2 gas recovery and sorbent regeneration. Capturing carbon dioxide from combustion exhaust on an absorbent and then regenerating the absorbent for recovery, storage, use, or sequestration of concentrated carbon dioxide are described herein. 11) flow rates were increased to approximately 130 liters per minute which more closely matched the cycle time of the regeneration process. CO2 Recovery Systems, Experiment 1: For this experiment carbon dioxide was sorbed onto a molecular sieve at a flow rate of 50 liters per minute with ten percent being carbon dioxide and the remaining being nitrogen. The flow to the infrared sensor was controlled using a rotameters set to 0.5 liters per minute. Make informed purchasing decisions with verified reviews from business owners like you.