WO2003097451A1 - Method for recovering ballast from the exhaust gas of internal combustion engines on board airships - Google Patents
Method for recovering ballast from the exhaust gas of internal combustion engines on board airships Download PDFInfo
- Publication number
- WO2003097451A1 WO2003097451A1 PCT/DE2003/001653 DE0301653W WO03097451A1 WO 2003097451 A1 WO2003097451 A1 WO 2003097451A1 DE 0301653 W DE0301653 W DE 0301653W WO 03097451 A1 WO03097451 A1 WO 03097451A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- wash liquor
- board
- airships
- internal combustion
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/70—Ballasting arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/06—Rigid airships; Semi-rigid airships
- B64B1/24—Arrangement of propulsion plant
Definitions
- the invention relates to a method for obtaining ballast from the exhaust gas of internal combustion engines, in particular wave power gas turbines, on board airships.
- the fuel consumed during the journey leads to a continuous decrease in the weight to be carried by the lifting gas.
- the weight loss was compensated for by releasing the lifting gas.
- Ballast water production in the LZ 130 airship is described in the VDI magazine, vol. 83, no. 15, (1939).
- the exhaust gases from the piston engines used there pass through a three-stage cooler. In the first stage, the hot exhaust gas is cooled from 500 ° C to approx. 400 ° C using ambient air. In an exhaust gas temperature of 50 ° C is reached in a second stage water cooler. The exhaust gas is cooled to about 5 ° C above the ambient temperature in a final air-cooled heat exchanger.
- weight compensation of fuel consumption could be achieved with such a system under certain conditions. These systems were large and heavy and, depending on the cooler design, caused considerable additional air resistance or a loss of efficiency in the propulsion system of the airship.
- Wave power gas turbines are only possible with great additional effort and lead to unacceptable technical solutions. Gas turbines are operated with a much higher excess air. This also reduces the "dew point" of the exhaust gases. This means a higher cooling effort for a larger mass throughput.
- the object of the invention is a method for obtaining non-corrosive ballast from the exhaust gas of internal combustion engines, in particular wave power gas turbines, on board airships, which requires little energy and equipment and the ballast recovery corresponds at least to the weight compensation of fuel consumption.
- this object is achieved in that, according to the method for obtaining ballast from the exhaust gas of internal combustion engines, in particular wave power gas turbines, on board airships
- wash liquor Absorption of carbon dioxide (CO2) and condensation of water vapor takes place by guiding an exhaust gas stream through a basic aqueous solution (“wash liquor”).
- wash liquor ammonia-water or a crystalline hydroxide of an alkali or alkaline earth metal dissolved in water or spent alkali can be used as the wash liquor.
- the hydroxide has a low molecular weight.
- the hydroxide is an alkali or alkaline earth metal with a chemical atomic number between 3 and 12.
- lithium hydroxide or lithium hydroxide with water of crystallization can be used as the wash liquor.
- wash liquor and the carbon dioxide are brought into intensive contact.
- the wash liquor absorbs the CO2 from the exhaust gas stream in a contact apparatus.
- the contact apparatus is a jet washer and / or a
- the temperature range can also be partially in the laundry itself, for example
- the CO2 and the wash liquor react to form carbonate and / or hydrogen carbonate, which is separated off and stored on board.
- the invention is based on the idea that the combustion of 1kg of kerosene produces about 3kg of carbon dioxide (CO2). By separating this A sufficient amount of ballast can be obtained in the exhaust gas from the internal combustion engines.
- CO2 can be absorbed in basic aqueous solutions ("alkalis") by washing processes known from the chemical industry (amine, Benfield, etc.) and reacts therein to carbonate and / or to hydrogen carbonate. This can then be separated off using conventional processes and as ballast on board
- alkalis basic aqueous solutions
- the carbonate-containing aqueous solution is hygroscopic, ie, in addition to the absorption of CO2, it leads to a considerable extent to the condensation of water vapor from the exhaust gas and thus to the accumulation of additional ballast.
- the alkali is either carried along (for example, as ammonia water) or produced on board the airship from the hydroxide of an alkali or alkaline earth metal by dissolving it in water or in an already used alkali.
- Hydroxides of alkali or alkaline earth metals should preferably be low
- Alkali and alkaline earth metals with a chemical atomic number between 3 and 12, i.e. Li, Be, Na, Mg.
- the lye should absorb the CO2 from the exhaust gas in a contact apparatus in which the two phases to improve the mass transfer in intensive
- ballast which is as non-corrosive as possible from the CO2 contained in the exhaust gas of the internal combustion engines used in an amount with which at least the fuel consumption
- Airship drives can be compensated. Ballast should preferably be produced in excess in order to achieve complete weight compensation by ballast recovery from a partial flow of the entire exhaust gas of the drives, ie not having to provide a system for every drive unit of the airship. Since the solubility of gases in washing liquids (here: CO2 in lye) generally increases with decreasing temperature, the exhaust gas should be cooled before contact with the washing liquor, preferably to 0 ° C to 40 ° C. The cooling down to this temperature range can also partially take place in the laundry itself, for example by quenching. Because when the gas is dissolved in the liquid
- the basic sequence of the method according to the invention is shown as a block diagram.
- the hot exhaust gas 2 of an internal combustion engine 1 is passed through an exhaust gas cooler 3, in which the heat is given off to the ambient air 4.
- the cooler can be designed in several stages and can also use other cooling media.
- the cooled exhaust gas 5 is brought into intensive contact with the treated wash liquor 7 in a contact apparatus 6.
- the wash liquor 7 should also be cooled.
- the contact apparatus 6 also contains a separator for the carbonate / hydrogen carbonate 9, which is passed into a ballast collecting container 10.
- the exhaust gas 8 cleaned of CO2 can be released into the environment from the contact apparatus 6.
- the method according to the invention is finally explained using a concrete example.
- the exhaust gas After the exhaust gas has been cooled to 15 ° C., it is passed into a jet scrubber with a downstream wash column.
- the jet washer and washing column are operated isothermally at 15 ° C. and are designed so that together they represent an equilibrium stage in the thermodynamic sense. This is easy to achieve in terms of apparatus.
- the laundry is operated with aqueous LiOH liquor at a pH of 8.5, which is circulated. Due to the chemical binding of CO2 to carbonate, the pH value of the alkali drops, so that fresh alkali has to be constantly added to the circuit via a pH sensor.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003269811A AU2003269811A1 (en) | 2002-05-21 | 2003-05-21 | Method for recovering ballast from the exhaust gas of internal combustion engines on board airships |
DE10393100T DE10393100D2 (en) | 2002-05-21 | 2003-05-21 | Process for recovering ballast from the exhaust gas of internal combustion engines on board craft |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10222345 | 2002-05-21 | ||
DE10222345.9 | 2002-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003097451A1 true WO2003097451A1 (en) | 2003-11-27 |
Family
ID=29432163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001653 WO2003097451A1 (en) | 2002-05-21 | 2003-05-21 | Method for recovering ballast from the exhaust gas of internal combustion engines on board airships |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003269811A1 (en) |
DE (1) | DE10393100D2 (en) |
WO (1) | WO2003097451A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7866601B2 (en) | 2006-10-20 | 2011-01-11 | Lta Corporation | Lenticular airship |
US8297550B2 (en) | 2007-08-09 | 2012-10-30 | Lta Corporation | Lenticular airship and associated controls |
USD670638S1 (en) | 2010-07-20 | 2012-11-13 | Lta Corporation | Airship |
US8596571B2 (en) | 2011-03-31 | 2013-12-03 | Lta Corporation | Airship including aerodynamic, floatation, and deployable structures |
US8894002B2 (en) | 2010-07-20 | 2014-11-25 | Lta Corporation | System and method for solar-powered airship |
US9802690B2 (en) | 2013-11-04 | 2017-10-31 | Lta Corporation | Cargo airship |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1426047A (en) * | 1919-02-13 | 1922-08-15 | Cooke Charles John | Airship |
US4217238A (en) * | 1976-12-14 | 1980-08-12 | Exxon Research & Engineering Co. | Process for removing acid gases with hindered amines and amino acids |
-
2003
- 2003-05-21 AU AU2003269811A patent/AU2003269811A1/en not_active Abandoned
- 2003-05-21 WO PCT/DE2003/001653 patent/WO2003097451A1/en not_active Application Discontinuation
- 2003-05-21 DE DE10393100T patent/DE10393100D2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1426047A (en) * | 1919-02-13 | 1922-08-15 | Cooke Charles John | Airship |
US4217238A (en) * | 1976-12-14 | 1980-08-12 | Exxon Research & Engineering Co. | Process for removing acid gases with hindered amines and amino acids |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7866601B2 (en) | 2006-10-20 | 2011-01-11 | Lta Corporation | Lenticular airship |
US8109462B2 (en) | 2006-10-20 | 2012-02-07 | Lta Corporation | Lenticular airship |
US8297550B2 (en) | 2007-08-09 | 2012-10-30 | Lta Corporation | Lenticular airship and associated controls |
US8616503B2 (en) | 2007-08-09 | 2013-12-31 | Lta Corporation | Lenticular airship and associated controls |
US9840318B2 (en) | 2007-08-09 | 2017-12-12 | Pierre Balaskovic | Lenticular airship and associated controls |
US9828082B2 (en) | 2007-10-18 | 2017-11-28 | Lta Corporation | Airship having a cargo compartment |
USD670638S1 (en) | 2010-07-20 | 2012-11-13 | Lta Corporation | Airship |
US8894002B2 (en) | 2010-07-20 | 2014-11-25 | Lta Corporation | System and method for solar-powered airship |
US8899514B2 (en) | 2010-07-20 | 2014-12-02 | Lta Corporation | System and method for varying airship aerostatic buoyancy |
US8596571B2 (en) | 2011-03-31 | 2013-12-03 | Lta Corporation | Airship including aerodynamic, floatation, and deployable structures |
US9745042B2 (en) | 2011-03-31 | 2017-08-29 | Lta Corporation | Airship including aerodynamic, floatation, and deployable structures |
US9802690B2 (en) | 2013-11-04 | 2017-10-31 | Lta Corporation | Cargo airship |
Also Published As
Publication number | Publication date |
---|---|
AU2003269811A1 (en) | 2003-12-02 |
DE10393100D2 (en) | 2005-05-12 |
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