GB2238783A - A process for the removal of carbon dioxide gas from exhaust gases - Google Patents

A process for the removal of carbon dioxide gas from exhaust gases Download PDF

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Publication number
GB2238783A
GB2238783A GB8927416A GB8927416A GB2238783A GB 2238783 A GB2238783 A GB 2238783A GB 8927416 A GB8927416 A GB 8927416A GB 8927416 A GB8927416 A GB 8927416A GB 2238783 A GB2238783 A GB 2238783A
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GB
United Kingdom
Prior art keywords
carbon dioxide
gas
removal
dioxide gas
exhaust gases
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8927416A
Other versions
GB2238783B (en
GB8927416D0 (en
Inventor
Daniel Stewart Robertson
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8927416A priority Critical patent/GB2238783B/en
Publication of GB8927416D0 publication Critical patent/GB8927416D0/en
Publication of GB2238783A publication Critical patent/GB2238783A/en
Application granted granted Critical
Publication of GB2238783B publication Critical patent/GB2238783B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treating Waste Gases (AREA)

Abstract

CO2 is removed by treating the exhaust gas with calcium orthoplumbate (Ca2 PbO4) sorbent.

Description

A Process for the Removal of Carbon Dioxide Gas from Exhaust Gases This invention relates to the removal of carbon dioxide from the products of combustion of hydrocarbons and other sources of this Gas.
There has arisen a need to present carbon dioxide gas, produced from various sources, from reaching the natural atmosphere of the Earth. This arises from evidence now accumulating, that the release of this gas by industrial and other processes over the past 100 years could be producing deleterious effects on the environment of the Earth.
The principal source of this gas is the combustion of hydrocarbon fuels to produce electrical energy, motive energy and consumer products. Examples of units producing this gas are power stations, automobiles and industrial furnaces (kilns). Examples of fuels used are coal, oil, and natural gas.
According to this invention there is provided a series of chemical reactions which effectively remove carbon dioxide from exhaust gases containing this gas and which further allow the gas to be disposed off without detriment to the environment, recovery of the component essential to the removal of carbon dioxide and the production of oxygen gas as a by-product.
A specific embodiment of the invention will now be described by way of example.
The particular gas mixture containing the carbon dioxide gas (cho2) is first washed by passage through water or a water spray to remove acid gases such as oxides of nitrogen or oxides of sulphur. These may also be removed by passage through catalytic reactors such as are at present in use in the exhaust gases of petrol engines.
The washed gas mixture containing the carbon dioxide gas is next passed over a loose mass, through a porous block guided between arranged plates or a coated metal mesh of the chemical compound calcium Orthoplumbate whose chemical formula is Cao PbO# at a temperature below 1000 centigrade.
It is preferred, but not necessary that the gas exhaust be moist as would be the case after washing or contained moisture as a result of the combustion process, as would be the case in the exhaust of a petrol engine. The carbon dioxide is rapidly absorbed.
The products of the chemical reaction between carbon dioxide gas and calcium orthoplumbate are calcium carbonate and lead oxide.
When no more carbon dioxide is removed by the mass of material involved, meaning the reaction with this mass of material is complete, the spent material is then heated in a furnace to red heat, about 6050 C. This heating produces oxygen gas which may be released to the atmosphere or collected for industrial use. On completion of the evolution of oxygen the temperature of the furnace is raised to S500C and the evolution of carbon dioxide commences.
This gas may be absorbed in alkaline solutions, such as sodium hydroxide giving sodium carbonate or ammonium hydroxide givlt ammonium carbonate. Both products are useful industrially and the former may be disposed of in the sea without detrument to this environment.
The heating process of the spent calcium orthoplumbate are aided by the passage of steam through the furnace while heating is in operation.
On completion of the heating process the calcium plumbate is regenerated by heating in a stream of air to 8500 C.
Alternatively calcium orthorplumbate may be regenerated by reacting the fired material with sodium hypochrite solution (beaching solution) heated to 700 C.

Claims (4)

1. A process for the removal of carbon dioxide gas from all sources of this gas.
2. A process for the recovery of the essential chemical component in Claim I Amendments to the claims have been filed as follows AMENDED CLAIMS 1. A process for the removal of carbon dioxide gas from all sources of this gas by means of a chemical reaction with the compound calcium plus bathe (CA2PbO4).
2. A process for the recovery of the reacted carbon dioxide gas plus oxygen gas by means of differential heating.
3. The capability of processes in Claims 1 and 2 of being operated separately or continuously in sequence.
4. A process for the recovery of the essential component in Claim 1, namely calcium plumbate.
GB8927416A 1989-12-05 1989-12-05 A process for the removal of carbon dioxide gas from exhaust gases Expired - Fee Related GB2238783B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8927416A GB2238783B (en) 1989-12-05 1989-12-05 A process for the removal of carbon dioxide gas from exhaust gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8927416A GB2238783B (en) 1989-12-05 1989-12-05 A process for the removal of carbon dioxide gas from exhaust gases

Publications (3)

Publication Number Publication Date
GB8927416D0 GB8927416D0 (en) 1990-02-07
GB2238783A true GB2238783A (en) 1991-06-12
GB2238783B GB2238783B (en) 1993-02-24

Family

ID=10667407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8927416A Expired - Fee Related GB2238783B (en) 1989-12-05 1989-12-05 A process for the removal of carbon dioxide gas from exhaust gases

Country Status (1)

Country Link
GB (1) GB2238783B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB944669A (en) * 1960-06-15 1963-12-18 Jean O A L Improvements in or relating to the purification of air
GB2135900A (en) * 1983-03-03 1984-09-12 Dow Chemical Co Process for the recovery of co2 from gases
EP0219103A2 (en) * 1985-10-18 1987-04-22 Air Products And Chemicals, Inc. Oxidation of carbonaceous material
EP0227990A1 (en) * 1985-12-10 1987-07-08 Sumitomo Chemical Company, Limited Process for adsorbing and separating carbon dioxide from gas mixture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB944669A (en) * 1960-06-15 1963-12-18 Jean O A L Improvements in or relating to the purification of air
GB2135900A (en) * 1983-03-03 1984-09-12 Dow Chemical Co Process for the recovery of co2 from gases
EP0219103A2 (en) * 1985-10-18 1987-04-22 Air Products And Chemicals, Inc. Oxidation of carbonaceous material
EP0227990A1 (en) * 1985-12-10 1987-07-08 Sumitomo Chemical Company, Limited Process for adsorbing and separating carbon dioxide from gas mixture

Also Published As

Publication number Publication date
GB2238783B (en) 1993-02-24
GB8927416D0 (en) 1990-02-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951205