WO2016139676A2 - An unique process and system, for neutralizing / trapping oxides of carbon present in hot and dirty, fossil fuel fired boiler flue gas. - Google Patents

An unique process and system, for neutralizing / trapping oxides of carbon present in hot and dirty, fossil fuel fired boiler flue gas. Download PDF

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Publication number
WO2016139676A2
WO2016139676A2 PCT/IN2016/000056 IN2016000056W WO2016139676A2 WO 2016139676 A2 WO2016139676 A2 WO 2016139676A2 IN 2016000056 W IN2016000056 W IN 2016000056W WO 2016139676 A2 WO2016139676 A2 WO 2016139676A2
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flue gas
oxides
present
carbon
cum
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PCT/IN2016/000056
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French (fr)
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WO2016139676A3 (en
Inventor
Kumar Subrahmanyam
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Kumar Subrahmanyam
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Publication of WO2016139676A3 publication Critical patent/WO2016139676A3/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • 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
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/608—Sulfates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0233—Other waste gases from cement factories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/025—Other waste gases from metallurgy plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/50—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/50—Intercepting solids by cleaning fluids (washers or scrubbers)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/50—Sorption with semi-dry devices, e.g. with slurries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/70—Condensing contaminants with coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/80—Quenching
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/32—Direct CO2 mitigation

Definitions

  • This invention relates to the unique process & system of capturing, neutralizing / trapping large quantities of Oxides of Carbon; present in the hot and dirty flue gas liberated by a fossil fuel fired boiler - leading to Carbon Capture & Sequestration.
  • Oxides of Carbon are liberated to the atmosphere in the form of Carbon Dioxide gas. This is more prominent in 'fossil fuel fired thermal power plant '; wherein hot and dirty flue gas is liberated into the atmospheric.
  • the Oxides of Carbon present in hot & dirty flue gas are one of the main causes for Global Warming leading to Green House effect and tending towards climate Change.
  • the object of this invention is to effectively capture, neutralize / trap Oxides of Carbon present in the flue gas before it is dissipated into atmosphere.
  • the Oxides of Carbon present in fossil fuel fired flue gas are one of the main causes for Global Warming leading to Green House effect and tending towards Climate Change. Therefore main object of this invention is to mitigate GLOBAL WARMING.
  • the unique process and system for capturing, neutralizing and trapping Oxides of Carbon present in the fossil fuel fired flue gas is essentially to induce the reaction between Carbon dioxide gas and water to form Carbonic acid.
  • the highly unstable and weak acid thus formed is instantly reacted with Metallic oxides, Gypsum.
  • Oxides of Carbon present in fossil fuel fired flue gas can be neutralized and trapped by metallic Oxides present in waste material like blast furnace slag, red mud and fly ash.
  • the Carbon Capture and Storage from flue gas can be carried out at three different locations 1) Evaporation & Saturation section 2) saturated flue gas cooling section and 3) in the chimney / stack.
  • the Quenching, scrubbing cum saturation liquid preferred to be alkaline in nature (seawater / milk of lime / lime slurry etc.); and can also contain traces of metallic oxides like (Ferrous Oxide: FeO, Ferric Oxide: Fe 2 0 3 , Aluminium Oxide: A1 2 0 3 , Calcium Oxide: CaO, Silicon dioxide: Si0 2 , Magnesioum Sulphate) if deemed necessary.
  • the acidic media present in the flue gas will get neutralized by the alkaline matter present in the quenching, scrubbing cum saturation liquid.
  • the suspended particulate matters present in the hot and dirty flue gas will get trapped in the quenching, scrubbing cum saturation liquid.
  • the fully saturated, cooled, moisture laden flue gas that will enter the chimney / stack will be near but higher than ambient temperature.
  • the chimney / stack is constructed out of FRP (Fiber Re-enforced Plastic) or MSRL (Mild Steel with Rubber Lining) to withstand corrosion and erosion. It is being advocated that, in the chimney, slurry (at below ambient temperature) containing Metallic Oxides like (Ferrous Oxide: FeO, Ferric Oxide: Fe 2 0 3 , Aluminium Oxide: A1 2 0 3 , Calcium Oxide: CaO, Silicon dioxide: Si0 2 , Magnesium Sulphate) be appropriately introduced / sprayed into the flow of the saturated, cooled, moisture laden flue gas.
  • FRP Fiber Re-enforced Plastic
  • MSRL Metal Steel with Rubber Lining
  • the invention offers a significantly economic solution, with low production and operating cost for neutralizing / trapping Oxides of Carbon present in hot and dirty, fossil fuel fired boiler flue gas.
  • the invention effectively and efficiently utilizes the metallic oxides present in waste material like Blast furnace slag, fly ash and red mud.
  • the invention enables lower temperature for neutralizing / trapping Oxides of Carbon present in hot and dirty, fossil fuel fired boiler flue gas especially when seawater being returned to the sea.
  • Moisture present in hot and dirty flue gas due to moisture present in flue gas can be used to generate high purity water from brackish / sea water

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

The process and system for ensuring, clean and green technology for neutralizing Oxides of Carbon, Oxides of Sulphur, and Oxides of Nitrogen present in hot and dirty flue gas liberated by fossil fuel fired boilers. This will lead to Carbon Capture and Storage - Carbon Sequestration The Oxides of Carbon are neutralized by first converting the gas into Carbonic acid during phase change of water vapor into water droplets - present in the flue gas. The Carbonic acid thus formed is reacted instantaneously with Oxides of Metallic Oxides present in waste slurry like Red Mud, Blast Furnace Slag, Ash slurry from coal fired boilers etc. The Metallic Carbonates thus formed are stable compounds and can be used as land fill.

Description

An unique process and system, for neutralizing / trapping Oxides of Carbon present in hot and dirty, fossil fuel fired boiler flue gas.
FIELD OF INVENTION
This invention relates to the unique process & system of capturing, neutralizing / trapping large quantities of Oxides of Carbon; present in the hot and dirty flue gas liberated by a fossil fuel fired boiler - leading to Carbon Capture & Sequestration.
BACKGROUND
Large quantities of Oxides of Carbon are liberated to the atmosphere in the form of Carbon Dioxide gas. This is more prominent in 'fossil fuel fired thermal power plant '; wherein hot and dirty flue gas is liberated into the atmospheric. The Oxides of Carbon present in hot & dirty flue gas are one of the main causes for Global Warming leading to Green House effect and tending towards Climate Change.
OBJECT OF INVENTION
The object of this invention is to effectively capture, neutralize / trap Oxides of Carbon present in the flue gas before it is dissipated into atmosphere. The Oxides of Carbon present in fossil fuel fired flue gas are one of the main causes for Global Warming leading to Green House effect and tending towards Climate Change. Therefore main object of this invention is to mitigate GLOBAL WARMING.
SUMMARY OF INVENTION
The unique process and system for capturing, neutralizing and trapping Oxides of Carbon present in the fossil fuel fired flue gas; is essentially to induce the reaction between Carbon dioxide gas and water to form Carbonic acid. The highly unstable and weak acid thus formed is instantly reacted with Metallic oxides, Gypsum.
Large quantity of metal oxides like (Ferrous Oxide: FeO, Ferric Oxide: Fe203, Aluminium Oxide: A1203, Calcium Oxide: CaO, Silicon dioxide: Si02) are present as impurities in industrial waste streams, such as Blast Furnace Slag, Red Mud from processing Bauxite ore and in Ash / Fly ash generated by burning coal. BRIEF DESCRIPTION
Oxides of Carbon present in fossil fuel fired flue gas can be neutralized and trapped by metallic Oxides present in waste material like blast furnace slag, red mud and fly ash. The Carbon Capture and Storage from flue gas can be carried out at three different locations 1) Evaporation & Saturation section 2) saturated flue gas cooling section and 3) in the chimney / stack.
Weak Carbonic acid is initially formed, which is then reacted instantaneously with metallic oxides or highly alkaline substance containing Hydroxyl ions like Sodium Hydroxide; Calcium Hydroxide etc to form metallic salts
DETAILED PROCESS DESCRIPTION: (Refer Diagram: 1, 2 & 3)
With the help of a centrifugal blower, hot (around 150° C) and dirty (containing traces of Suspended Particulate Matters, Oxides of Sulphur and Carbon, Nitrogen etc) flue gas liberated by a coal fired, boiler in thermal power plant is drawn into a vertical / horizontal evaporation cum saturation chamber. Quenching, scrubbing cum saturation' liquid (seawater) is sprayed directly into the flow of the hot and dirty flue gas. (Refer Diagram: 1)
The Quenching, scrubbing cum saturation liquid, preferred to be alkaline in nature (seawater / milk of lime / lime slurry etc.); and can also contain traces of metallic oxides like (Ferrous Oxide: FeO, Ferric Oxide: Fe203, Aluminium Oxide: A1203, Calcium Oxide: CaO, Silicon dioxide: Si02, Magnesioum Sulphate) if deemed necessary. The acidic media present in the flue gas will get neutralized by the alkaline matter present in the quenching, scrubbing cum saturation liquid. The suspended particulate matters present in the hot and dirty flue gas will get trapped in the quenching, scrubbing cum saturation liquid.
The warm (around 60° C) saturated and partially cleaned flue gas, containing Carbon dioxide gas (around 15% by weight of the total quantity of flue gas); is allowed to flow from the vertical / horizontal evaporation cum saturation chamber into the shell side of a 'Falling Film' type saturated flue gas cooler. Cooling liquid is allowed to flow through the tubes, due to which, some water vapor present in the saturated flue gas will condense - releasing both sensible and latent heat. The mist like situation / phenomenon formed due to the phase change of water vapor, from vapor into liquid, will assist in the formation of Carbonic acid. Reaction between Carbon dioxide gas present in the saturated flue gas and condensing water vapor will ensure formation of Carbonic acid. Metallic Oxides like (Ferrous Oxide: FeO, Ferric Oxide: Fe203, Aluminium Oxide: A1203, Calcium Oxide: CaO, Silicon dioxide: Si02) introduced as a slurry and present in the shell side of a 'Falling Film' type saturated flue gas cooler will react with the highly unstable and weak Carbonic acid to form Carbonate metallic salts, instantaneously. (Refer Diagram: 2). Several 'Falling Film' type saturated flue gas cooler can be installed in series with the warm saturated & partially cleaned flue gas, containing Carbon dioxide gas being cooled and neutralized stepwise and systematically
Another centrifugal blower attached to the chimney / stack will now draw the fully saturated, cooled, moisture laden flue gas from shell side of the 'Falling Film' type saturated flue gas cooler.
The fully saturated, cooled, moisture laden flue gas that will enter the chimney / stack will be near but higher than ambient temperature. The chimney / stack is constructed out of FRP (Fiber Re-enforced Plastic) or MSRL (Mild Steel with Rubber Lining) to withstand corrosion and erosion. It is being advocated that, in the chimney, slurry (at below ambient temperature) containing Metallic Oxides like (Ferrous Oxide: FeO, Ferric Oxide: Fe203, Aluminium Oxide: A1203, Calcium Oxide: CaO, Silicon dioxide: Si02, Magnesium Sulphate) be appropriately introduced / sprayed into the flow of the saturated, cooled, moisture laden flue gas. (Refer Diagram: 3) The mist like situation / phenomenon formed due to the phase change of water vapor, from vapor into liquid, will assist in the formation of Carbonic acid. Reaction between Carbon dioxide gas present in the saturated flue gas and condensing water vapor will ensure formation of Carbonic acid; subsequent reaction with metallic oxides will lead to formation of Carbonate metallic salts, instantaneously.
It can therefore be safely concluded that this process for neutralizing / trapping Oxides of Carbon present in large volumes of hot and dirty flue gas are liberated. Weak Carbonic acid which is initially formed is then reacted instantaneously with metallic oxides, Gypsum, Magnesium Sulphate or highly alkaline substance containing Hydroxyl ions like Sodium Hydroxide; Calcium Hydroxide etc to form metallic salts
Figure imgf000005_0002
Figure imgf000005_0001
Fly Ash chemical composition (Reference Values)
Figure imgf000005_0003
SALIENT FEATURES OF THE INVENTION
The invention offers a significantly economic solution, with low production and operating cost for neutralizing / trapping Oxides of Carbon present in hot and dirty, fossil fuel fired boiler flue gas.
The invention effectively and efficiently utilizes the metallic oxides present in waste material like Blast furnace slag, fly ash and red mud. Magnesium Sulphate, Sodium and Calcium hydroxide to be utilized as reaction agents
The invention enables lower temperature for neutralizing / trapping Oxides of Carbon present in hot and dirty, fossil fuel fired boiler flue gas especially when seawater being returned to the sea.
Invention enables easy, effective and efficient method for trapping of (SPM) suspended particulate matters present in hot and dirty flue gas being liberated by a fossil fuel fired boiler
Moisture present in hot and dirty flue gas due to moisture present in flue gas can be used to generate high purity water from brackish / sea water

Claims

I Claim
1) The process and system for ensuring, neutralization of Carbon Dioxide gas present in hot and dirty, fossil fuel fired boiler flue gas, leading to Carbon Capture and Storage comprises of:
• First and foremost, preferably, raising the water vapor content of the hot and dirty flue gas to near Adiabatic Saturation Temperature in a Quencher - Evaporator chamber. The chamber can be either vertical or horizontal
• This is achieved through direct contact between the hot and dirty flue gas and the quenching, scrubbing cum saturation liquid (like seawater, milk of lime, lime slurry, slurry containing waste metal oxides etc)
• During the process some water present in the quenching, scrubbing cum saturation liquid will evaporate, mix and mingle with the now warm partly scrubbed and cleaned flue gas in the Quencher cum Evaporator chamber.
• Invariably Oxides of Sulphur present in the flue gas will get neutralized and Suspended' Particulate Matters present in the flue gas will get trapped in the quenching, scrubbing cum saturation liquid being sprayed in Quencher cum Evaporator chamber.
• The warm saturated flue gas from the Quencher cum Evaporator chamber is now allowed to enter into shell side of a 'Falling Film' type saturated flue gas cooler; wherein cooling liquid is being circulated through the pipes in the 'Falling Film' type saturated flue gas cooler.
• The warm saturated flue gas gets indirectly cooled, allowing water vapor present in it to condense to form water droplets. In other words phase change takes place, water vapor to water droplets in 'Falling Film' type saturated flue gas cooler. The cooler can be vertical or horizontal type.
• During this phase change phenomena Oxides of Carbon present in the warm saturated flue gas will react with the water vapor to form Carbonic Acid
• Waste slurry material containing Metallic Oxides, Gypsum, Alkaline chemicals that have been introduced into the shell side of 'Falling Film' 1 type saturated flue gas cooler, will react with the Carbonic acid formed during phase change to generate Metal Carbonates thus capturing the Carbon present in Carbon dioxide gas
• The warm saturated flue gas from the 'Falling Film' type saturated flue gas cooler is now allowed to enter the chimney / stack at a shade higher than ambient temperature • Waste slurry material containing Metallic Oxides at a temperature lower than ambient temperature is sprayed directly into the flow of warm saturated flue gas
• The warm saturated flue gas gets directly cooled, allowing water vapor present in it to condense to form water droplets. In other words phase change takes place, water vapor to water droplets in the chimney / stack
• Waste slurry material containing Metallic Oxides that have also been introduced into the chimney / stack, will react with the Carbonic acid formed during phase change to generate Metal Carbonates thus capturing the Carbon present in Carbon dioxide gas
• Necessary instrumentation and controls will have to be provided for safe and normal operation of the system
The system as claimed in claim 1,
Claim 2 Waste slurry material containing Metallic Oxides can be replaced / substituted with Gypsum/Magnesium Sulphate, alkaline chemicals with Hydroxyl ions like Sodium Hydroxide and Calcium Hydroxide
Claim 3 Several 'Falling Film' type saturated flue gas cooler can be installed in series with the warm saturated & partially cleaned flue gas, containing Carbon dioxide gas being passed through them and cooled to near ambient temperature and neutralized stepwise and systematically
Claim 4 Both the Quencher cum Evaporator chamber and the 'Falling Film' type saturated flue gas cooler can be installed either vertically or horizontally with appropriate and required changes in design, configuration, inlet - outlet nozzles etc
Claim 5 Gases containing Oxides of Carbon from Cement Calciner, Blast Furnace, Coke oven can be subjected to similar process and system for Carbon Capture
Claim 6 The presence of Oxides of Sulphur and Oxides of Nitrogen in the hot and dirty flue gas liberated by fossil fuel fired thermal power plant will also get neutralized during the proposed process
Claim 7 Pressure of warm and saturated gas in both Quencher cum Evaporator chamber and the 'Falling Film' type saturated flue gas cooler have to be controlled to ensure condensation of water vapor present in it.
PCT/IN2016/000056 2015-03-02 2016-03-01 An unique process and system, for neutralizing / trapping oxides of carbon present in hot and dirty, fossil fuel fired boiler flue gas. WO2016139676A2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109324157A (en) * 2018-11-15 2019-02-12 华电电力科学研究院有限公司 Priming apparatus is used in a kind of simulated flue gas preparation method and simulated flue gas test
CN112128791A (en) * 2020-09-14 2020-12-25 张斯瑞 Deep waste heat recovery method for smoke discharge of gas-fired boiler

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340572A (en) * 1978-05-19 1982-07-20 Woodside Construction, Inc. Process for recovering heat from stack or flue gas
US20130089482A1 (en) * 2011-10-11 2013-04-11 Phillips 66 Company Water recovery and acid gas capture from flue gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109324157A (en) * 2018-11-15 2019-02-12 华电电力科学研究院有限公司 Priming apparatus is used in a kind of simulated flue gas preparation method and simulated flue gas test
CN109324157B (en) * 2018-11-15 2023-08-18 华电电力科学研究院有限公司 Simulated smoke preparation method and water adding device for simulated smoke test
CN112128791A (en) * 2020-09-14 2020-12-25 张斯瑞 Deep waste heat recovery method for smoke discharge of gas-fired boiler

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