CN106823774B - Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag - Google Patents
Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag Download PDFInfo
- Publication number
- CN106823774B CN106823774B CN201710077278.2A CN201710077278A CN106823774B CN 106823774 B CN106823774 B CN 106823774B CN 201710077278 A CN201710077278 A CN 201710077278A CN 106823774 B CN106823774 B CN 106823774B
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- furnace slag
- carbon dioxide
- fluidized bed
- flue gas
- 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.)
- Active
Links
Images
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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- 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
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1892—Systems therefor not provided for in F22B1/1807 - F22B1/1861
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
-
- 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
- B01D2258/0283—Flue gases
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
A device and a method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag belong to the technical field of carbon dioxide recovery equipment and methods, and are used for fixing and reducing emission of carbon dioxide in flue gas by using blast furnace slag and recovering sensible heat of the flue gas. The technical scheme is as follows: the molten blast furnace slag is granulated and crushed to form high-temperature blast furnace slag particles, the high-temperature blast furnace slag particles and carbon dioxide-containing flue gas are subjected to primary heat exchange, the high-temperature blast furnace slag particles enter a fluidized bed reactor to be subjected to full carbonation reaction with carbon dioxide in the flue gas, a certain amount of heat is released by the carbonation reaction, then the blast furnace slag and products after the reaction enter a fluidized bed heat exchanger to be subjected to secondary heat exchange with the flue gas, the high-temperature flue gas generates steam through the heat exchanger, and the blast furnace slag is used as a cement manufacturing material after being cooled. The invention realizes the purposes of fixing carbon dioxide by using the blast furnace slag, reducing the emission of the carbon dioxide and recovering the sensible heat of the blast furnace slag and the flue gas, improves the carbon fixing efficiency of the blast furnace slag, reduces the cost of recovering the carbon dioxide and has obvious economic benefit and social benefit.
Description
Technical Field
The invention relates to a device and a method for fixing and reducing emission of carbon dioxide in flue gas by using blast furnace slag and recovering sensible heat of the flue gas, and belongs to the technical field of carbon dioxide recovery equipment and methods.
Background
The global climate change problem is becoming more serious and has become one of the main factors threatening the sustainable development of human beings, and the control of carbon dioxide emission is an irreparable subject in protecting the environment. The emission of carbon dioxide in the iron and steel industry of China is about 15 percent of the total emission of carbon dioxide, and the annual emission is about 15 hundred million tons, which is second only to the industries of electric power, cement and transportation. At present, methods for recovering carbon dioxide mainly include solvent absorption methods, adsorption methods, membrane separation methods, and the like, but these methods have disadvantages of high running cost and corrosion of equipment.
The mineralization and fixation of the carbon dioxide is an effective method for realizing the stable storage of the carbon dioxide, and the method utilizes the oxidation of the alkaline metal to react with the carbon dioxide to generate the carbonate compound which can stably exist for a long time, does not need monitoring, has small environmental risk and is considered to be one of the most potential carbon dioxide disposal methods. The blast furnace slag is waste slag generated by blast furnace smelting, and comprises the main components of CaO, mgO and SiO 2 、Al 2 O 3 And the like, wherein the contents of CaO and MgO are respectively 38-45% and 5-10%, and the carbon fixation capacity is good. Meanwhile, the blast furnace slag has large production amount in iron and steel enterprises, and can realize carbon dioxide fixation in the iron and steel enterprises, thereby reducing the emission of carbon dioxide in the iron and steel enterprises.
The carbonation fixation of carbon dioxide by using the waste slag of steel production is one of the main technologies according with the production characteristics of steel enterprises. The fixation of carbon dioxide by using blast furnace slag or steel slag has been implemented, but in the prior art, no matter the blast furnace slag or the steel slag reacts slowly under normal temperature and pressure, the required reaction time is long, and the reaction efficiency is low, so that the slag needs to be activated or reacted under the conditions of heating and pressurizing, thereby causing extra energy consumption and investment operation cost, and being incapable of achieving satisfactory effects. In the face of severe environmental protection situation, the discharge amount of carbon dioxide is greatly reduced, so that improvement of equipment and method for fixing carbon dioxide by blast furnace slag is necessary in the steel industry.
Disclosure of Invention
The invention aims to solve the technical problem that the device and the method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag can effectively solve the problems of high energy consumption, long reaction time and low conversion rate in the process of carbonating calcium-containing components of the blast furnace slag, reduce the discharge amount of carbon dioxide, and simultaneously recover the sensible heat of the blast furnace slag to achieve the purposes of energy conservation and emission reduction.
The technical scheme for solving the technical problems is as follows:
a device for fixing carbon dioxide and recovering sensible heat by using blast furnace slag comprises a granulation reactor, a fluidized bed heat exchanger, a waste heat boiler, a dust remover and an induced draft fan, wherein a feed inlet of the granulation reactor is connected with a slag runner of a blast furnace, a discharge outlet of the granulation reactor is connected with a feed inlet of the fluidized bed reactor, a discharge outlet of the fluidized bed reactor is connected with the fluidized bed heat exchanger, a slag discharge port is formed in the bottom of the fluidized bed heat exchanger, the induced draft fan is respectively connected with the bottom of the granulation reactor and the bottom of the fluidized bed heat exchanger through pipelines, a gas outlet of the granulation reactor and a gas outlet of the fluidized bed heat exchanger are connected with a gas inlet of the fluidized bed reactor, and a gas outlet of the fluidized bed reactor is sequentially connected with the dust remover, the waste heat boiler and a chimney.
According to the device for fixing carbon dioxide and recovering sensible heat by using blast furnace slag, the bottom and the top of the fluidized bed reactor are both provided with the temperature measuring modules.
According to the device for fixing carbon dioxide and recovering sensible heat by using blast furnace slag, flue gas analyzers are arranged on the flue gas pipelines at the inlet and the outlet of the fluidized bed reactor.
The method for fixing carbon dioxide and recovering sensible heat by using the blast furnace slag by using the device comprises the following steps:
a. granulating blast furnace slag and carrying out primary heat exchange:
the molten blast furnace slag enters a granulation reactor and is crushed into 1-5mm liquid drops, carbon dioxide-containing flue gas with the temperature of 120-200 ℃ is blown into the granulation reactor to complete primary heat exchange with the high-temperature liquid drops, the high-temperature liquid drops are cooled and converted into blast furnace slag particles, the temperature of the blast furnace slag particles is reduced, and the requirement of the blast furnace slag particles on the temperature for carbonation reaction is met by controlling the amount of the flue gas;
b. and (3) carbonation reaction:
the high-temperature blast furnace slag particles of the granulation reactor enter the fluidized bed reactor, the high-temperature blast furnace slag particles and carbon dioxide flue gas which has certain temperature and certain carbon dioxide amount after heat exchange are subjected to carbonation reaction fully to form a carbon-fixing product, and meanwhile, the carbonation reaction of the high-temperature blast furnace slag particles and the carbon dioxide is an exothermic reaction, so that the temperature of the flue gas is increased, and the sensible heat recovery amount is increased;
c. secondary heat exchange:
blast furnace slag particles and carbon-fixing products enter a fluidized bed heat exchanger from a discharge hole of the fluidized bed reactor, and perform secondary heat exchange with blown carbon dioxide-containing flue gas at the temperature of 120-200 ℃, the blast furnace slag is discharged after the temperature is reduced to be lower than 250 ℃, and the carbon dioxide-containing flue gas enters a previous stage fluidized bed reactor after heat exchange to perform sufficient carbonation reaction;
d. and (3) heat recovery:
the decarbonized flue gas after heat exchange and decarbonization of the granulation reactor, the fluidized bed heat exchanger and the fluidized bed reactor enters a waste heat boiler through a dust remover to generate steam, and the steam is used for power generation or is merged into the existing steam pipeline for utilization.
In the method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag, the reaction temperature of the carbonation reaction in the fluidized bed reactor is controlled to be 650-800 ℃, and the reaction time is 5-20min.
According to the method for fixing carbon dioxide by using blast furnace slag and recovering sensible heat, the mass ratio of the carbon dioxide to the blast furnace slag in the flue gas is controlled to be 1:5-15.
The beneficial effects of the invention are:
in the invention, after the molten blast furnace slag is granulated and crushed to form high-temperature blast furnace slag particles, the high-temperature blast furnace slag particles and the flue gas containing carbon dioxide are subjected to primary heat exchange, the high-temperature blast furnace slag particles enter a fluidized bed reactor to be subjected to full carbonation reaction with the carbon dioxide in the flue gas, a certain amount of heat is released by the carbonation reaction, then the blast furnace slag and a product obtained after the reaction enter a fluidized bed heat exchanger to be subjected to secondary heat exchange with the flue gas, the high-temperature flue gas generates steam through the heat exchanger, and the cooled blast furnace slag is used as a cement manufacturing material.
The invention solves the problems of additional energy consumption and investment and operation cost caused by the fact that the furnace slag needs to be activated or reacted under the heating and pressurizing conditions in the prior art, and achieves the purposes of utilizing the blast furnace slag to fix carbon dioxide, reducing carbon dioxide emission and simultaneously recovering the sensible heat of the blast furnace slag. The method makes full use of a large amount of blast furnace slag generated in the production process of the steel industry, greatly improves the carbon fixation efficiency of the blast furnace slag, simultaneously realizes and improves the sensible heat recovery of the blast furnace slag through flue gas waste heat recovery because the carbonation reaction process is an exothermic reaction, saves a large amount of funds, reduces the cost for recovering carbon dioxide, and has remarkable economic benefit and great social benefit for controlling greenhouse gas, saving energy and reducing emission.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The figures are labeled as follows: the system comprises a blast furnace 1, a slag runner 2, a granulation reactor 3, a fluidized bed reactor 4, a fluidized bed heat exchanger 5, a temperature measuring module 6, a slag discharge port 7, a dust remover 8, a waste heat boiler 9, an induced draft fan 10, a chimney 11 and a flue gas analyzer 12.
Detailed Description
The device for fixing carbon dioxide and recovering sensible heat by using blast furnace slag comprises a granulation reactor 3, a fluidized bed reactor 4, a fluidized bed heat exchanger 5, a dust remover 8, a waste heat boiler 9, an induced draft fan 10, a chimney 11, a temperature measurement module 6 and a flue gas analyzer 12.
The drawing shows that the feed inlet of the granulation reactor 3 is connected with the slag runner 2 of the blast furnace 1, the discharge outlet of the granulation reactor 3 is connected with the feed inlet of the fluidized bed reactor 4, the discharge outlet of the fluidized bed reactor 4 is connected with the fluidized bed heat exchanger 5, and the bottom of the fluidized bed heat exchanger 5 is provided with a slag discharge outlet 7. High-temperature blast furnace slag flows into the granulation reactor 3 through the slag runner 2 to be granulated, then enters the fluidized bed reactor 4 from the granulation reactor 3 to be subjected to carbonation reaction with carbon dioxide in flue gas, the blast furnace slag granules after the reaction enter the fluidized bed heat exchanger 5 to be subjected to heat exchange, and finally the blast furnace slag is discharged from the slag discharge port 7.
The drawing shows that an induced draft fan 10 is respectively connected with the bottom of the granulation reactor 3 and the bottom of the fluidized bed heat exchanger 5 through pipelines, an air outlet of the granulation reactor 3 and an air outlet of the fluidized bed heat exchanger 5 are connected with an air inlet of the fluidized bed reactor 4, and an air outlet of the fluidized bed reactor 4 is sequentially connected with a dust remover 8, a waste heat boiler 9 and a chimney 11.
In the figure, temperature measuring modules 6 are arranged at the bottom and the top of the fluidized bed reactor 4, and flue gas analyzers 12 are arranged on inlet and outlet flue gas pipelines of the fluidized bed reactor 4.
The method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag comprises the following steps: the molten blast furnace slag is granulated and crushed by the granulating reactor 3 to form high-temperature blast furnace slag particles, the high-temperature blast furnace slag particles and the flue gas containing carbon dioxide are subjected to primary heat exchange, the high-temperature blast furnace slag particles enter the fluidized bed reactor 4 to be subjected to full carbonation reaction with carbon dioxide in the flue gas, a certain amount of heat is released by carbonation reaction, then the blast furnace slag and the products after the reaction enter the fluidized bed heat exchanger 5 to be subjected to secondary heat exchange with the flue gas, the high-temperature flue gas generates steam through the heat exchanger, and the blast furnace slag is used as a cement material after being cooled.
The method comprises the following specific steps:
a. granulating blast furnace slag and carrying out primary heat exchange:
the molten blast furnace slag with the temperature of 1400-1500 ℃ enters a granulation reactor 3 and is crushed into 1-5mm liquid drops, coke oven smoke with the temperature of 120-200 ℃ is blown into the granulation reactor 3 to complete primary heat exchange with the high-temperature liquid drops, the temperature of the high-temperature liquid drops is reduced and converted into blast furnace slag granules, the temperature of the blast furnace slag granules is reduced to 750-800 ℃, and the temperature requirement of the blast furnace slag granules on carbonation reaction is met by controlling the smoke quantity;
b. and (3) carbonation reaction:
the high-temperature blast furnace slag granules in the granulation reactor 3 enter the fluidized bed reactor 4, the high-temperature blast furnace slag granules and the coke oven flue gas after heat exchange are subjected to carbonation reaction fully at the temperature of 650-800 ℃ for 5-20min to form a carbon-fixing product, and the temperature of the discharged blast furnace slag granules is not lower than 650 ℃. Meanwhile, the carbonation reaction of the high-temperature blast furnace slag particles and the carbon dioxide is an exothermic reaction, so that the temperature of the flue gas is increased, and the sensible heat recovery is further improved;
c. secondary heat exchange:
blast furnace slag particles and carbon fixation products enter a fluidized bed heat exchanger 5 from a discharge hole of a fluidized bed reactor 4, and perform secondary heat exchange with blown carbon dioxide-containing flue gas at the temperature of 120-200 ℃, the blast furnace slag is discharged from a slag discharge hole 7 after the temperature is reduced to be lower than 250 ℃, and the carbon dioxide-containing flue gas enters the fluidized bed reactor 4 of the previous stage for sufficient carbonation reaction after heat exchange;
d. and (3) heat recovery:
the decarbonized flue gas which is subjected to heat exchange and decarbonization through the granulation reactor 3, the fluidized bed heat exchanger 5 and the fluidized bed reactor 4 enters a waste heat boiler 9 through a dust remover 8 to generate steam, and the steam is used for power generation or is merged into the existing steam pipeline for utilization.
In the step b, the mass ratio of the carbon dioxide to the blast furnace slag in the flue gas is controlled to be 1:5-15.
Compared with the prior art, the invention follows the theory of 'treating wastes with wastes' and utilizes a large amount of blast furnace slag generated in the production process of the steel industry as the raw material to efficiently and fully realize the CaO and CO in the blast furnace slag under the condition of adapting to the temperature 2 The reaction improves the carbon fixation efficiency of CaO in the blast furnace slag, simultaneously the carbonation reaction process is an exothermic reaction, the sensible heat recovery of the blast furnace slag is realized and improved through the flue gas waste heat recovery, and the purpose of fixing CO in the blast furnace slag is achieved 2 Reduction of CO 2 The aim of recovering the sensible heat of the blast furnace slag while discharging is achieved, and great social significance is achieved on greenhouse gas control, energy conservation and emission reduction.
Claims (6)
1. A device for fixing carbon dioxide and recovering sensible heat by using blast furnace slag is characterized in that: the system comprises a granulation reactor (3), a fluidized bed reactor (4), a fluidized bed heat exchanger (5), a dust remover (8), a waste heat boiler (9) and an induced draft fan (10), wherein a feed inlet of the granulation reactor (3) is connected with a slag runner (2) of a blast furnace (1), a discharge outlet of the granulation reactor (3) is connected with a feed inlet of the fluidized bed reactor (4), a discharge outlet of the fluidized bed reactor (4) is connected with a feed inlet of the fluidized bed heat exchanger (5), the bottom of the fluidized bed heat exchanger (5) is provided with a slag discharge port (7), the induced draft fan (10) is respectively connected with the bottom of the granulation reactor (3) and the bottom of the fluidized bed heat exchanger (5) through pipelines, an air outlet of the granulation reactor (3) and an air outlet of the fluidized bed heat exchanger (5) are connected with an air inlet of the fluidized bed reactor (4), and an air outlet of the fluidized bed reactor (4) is sequentially connected with the dust remover (8), the waste heat boiler (9) and a chimney (11);
the molten blast furnace slag is granulated and crushed by the granulating reactor (3) to form high-temperature blast furnace slag particles, the high-temperature blast furnace slag particles and the carbon dioxide-containing flue gas are subjected to primary heat exchange, the high-temperature blast furnace slag particles enter the fluidized bed reactor (4) to be subjected to full carbonation reaction with carbon dioxide in the flue gas, a certain amount of heat is released by the carbonation reaction, then the blast furnace slag and the products after the reaction enter the fluidized bed heat exchanger (5) to be subjected to secondary heat exchange with the flue gas, and the carbon dioxide-containing flue gas after the heat exchange enters the fluidized bed reactor (4) to be subjected to full carbonation reaction.
2. The apparatus for fixing carbon dioxide and recovering sensible heat using blast furnace slag according to claim 1, wherein: and temperature measuring modules (6) are respectively arranged at the bottom and the top of the fluidized bed reactor (4).
3. The apparatus for fixing carbon dioxide and recovering sensible heat using blast furnace slag according to claim 2, wherein: and flue gas analyzers (12) are respectively arranged on the inlet flue gas pipeline and the outlet flue gas pipeline of the fluidized bed reactor (4).
4. The method for fixing carbon dioxide and recovering sensible heat by using the blast furnace slag by using the device is characterized by comprising the following steps: the method comprises the following steps:
a. granulating blast furnace slag and carrying out primary heat exchange:
the molten blast furnace slag enters a granulation reactor (3) and is crushed into 1-5mm liquid drops, carbon dioxide-containing flue gas with the temperature of 120-200 ℃ is blown into the granulation reactor (3) to complete primary heat exchange with the high-temperature liquid drops, the high-temperature liquid drops are cooled and converted into blast furnace slag granules, the temperature of the blast furnace slag granules is reduced, and the requirement of the blast furnace slag granules on the temperature for carbonation reaction is met by controlling the amount of the flue gas;
b. and (3) carbonation reaction:
high-temperature blast furnace slag particles in the granulation reactor (3) enter the fluidized bed reactor (4), the high-temperature blast furnace slag particles and carbon dioxide flue gas which has certain temperature and certain carbon dioxide content after heat exchange are subjected to carbonation reaction fully to form a carbon-fixing product, and meanwhile, the carbonation reaction of the high-temperature blast furnace slag particles and the carbon dioxide is an exothermic reaction, so that the temperature of the flue gas is increased, and the sensible heat recovery is further improved;
c. secondary heat exchange:
blast furnace slag particles and carbon fixation products enter a fluidized bed heat exchanger (5) from a discharge hole of the fluidized bed reactor (4), and are subjected to secondary heat exchange with blown carbon dioxide-containing flue gas at the temperature of 120-200 ℃, the blast furnace slag is discharged after the temperature is reduced to be lower than 250 ℃, and the carbon dioxide-containing flue gas enters the fluidized bed reactor (4) at the previous stage for sufficient carbonation reaction after heat exchange;
d. and (3) heat recovery:
the decarbonized flue gas which is subjected to heat exchange and decarbonization through the granulation reactor (3), the fluidized bed heat exchanger (5) and the fluidized bed reactor (4) enters a waste heat boiler (9) through a dust remover (8) to generate steam, and the steam is used for power generation or is merged into the existing steam pipeline for utilization.
5. The method for fixing carbon dioxide and recovering sensible heat using blast furnace slag according to claim 4, wherein: the carbonation reaction in the fluidized bed reactor (4) is controlled at 650-800 ℃ for 5-20min.
6. The method for fixing carbon dioxide and recovering sensible heat using blast furnace slag according to claim 5, wherein: controlling the mass ratio of carbon dioxide to blast furnace slag in the flue gas to be 1:5-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710077278.2A CN106823774B (en) | 2017-02-14 | 2017-02-14 | Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710077278.2A CN106823774B (en) | 2017-02-14 | 2017-02-14 | Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106823774A CN106823774A (en) | 2017-06-13 |
| CN106823774B true CN106823774B (en) | 2023-03-21 |
Family
ID=59128684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710077278.2A Active CN106823774B (en) | 2017-02-14 | 2017-02-14 | Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106823774B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281932B (en) * | 2017-08-11 | 2019-10-25 | 钢研晟华科技股份有限公司 | The process of denitrating flue gas is sintered using steel slag sensible heat and effective component |
| CN108404645A (en) * | 2018-03-21 | 2018-08-17 | 宁波大学 | A kind of device of dislocation type slag carbon dioxide removal |
| CN110131702A (en) * | 2019-06-13 | 2019-08-16 | 西安西热水务环保有限公司 | A kind of wet slag removing system pulp water cyclic utilization system and method |
| CN113074366B (en) * | 2021-04-16 | 2022-11-29 | 太原理工大学 | Coal-fired flue gas CO2 solidification adsorption system |
| CN113913571A (en) * | 2021-09-30 | 2022-01-11 | 武汉钢铁有限公司 | Device for separating carbon dioxide in blast furnace gas by using metallurgical slag and separation method thereof |
| CN114432832B (en) * | 2021-12-31 | 2023-05-02 | 西安交通大学 | Waste heat driven air trapping CO in steel plant 2 System of (2) and CO 2 Is used in the method of using |
| CN114507758B (en) * | 2021-12-31 | 2023-04-07 | 西安交通大学 | Steel slag waste heat recovery, f-CaO graded digestion and carbon emission reduction system |
| CN114543553B (en) * | 2022-03-24 | 2023-06-30 | 重庆科技学院 | Intermittent circulating fluidized bed boiler bottom slag waste heat recovery coupling CO 2 Fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228774A (en) * | 2011-05-27 | 2011-11-02 | 中钢集团鞍山热能研究院有限公司 | Method and device for sensible heat reclaiming of blast furnace slag and desulfurization of sintering flue gas |
| CN102671519A (en) * | 2012-05-29 | 2012-09-19 | 中国科学院过程工程研究所 | Method for fixing CO2 (carbon dioxide) by steel slag recycling |
| CN204265776U (en) * | 2014-11-20 | 2015-04-15 | 清华大学 | A kind of metallurgical slag granulation and heat reclaiming system thereof |
| CN104759203A (en) * | 2015-03-17 | 2015-07-08 | 华能国际电力股份有限公司 | Fluidized bed technology and fluidized bed system for directly capturing CO2 in mineralized flue gas |
| CN206454491U (en) * | 2017-02-14 | 2017-09-01 | 河钢股份有限公司 | A kind of utilization blast furnace slag fixes carbon dioxide and reclaims the device of sensible heat |
-
2017
- 2017-02-14 CN CN201710077278.2A patent/CN106823774B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228774A (en) * | 2011-05-27 | 2011-11-02 | 中钢集团鞍山热能研究院有限公司 | Method and device for sensible heat reclaiming of blast furnace slag and desulfurization of sintering flue gas |
| CN102671519A (en) * | 2012-05-29 | 2012-09-19 | 中国科学院过程工程研究所 | Method for fixing CO2 (carbon dioxide) by steel slag recycling |
| CN204265776U (en) * | 2014-11-20 | 2015-04-15 | 清华大学 | A kind of metallurgical slag granulation and heat reclaiming system thereof |
| CN104759203A (en) * | 2015-03-17 | 2015-07-08 | 华能国际电力股份有限公司 | Fluidized bed technology and fluidized bed system for directly capturing CO2 in mineralized flue gas |
| CN206454491U (en) * | 2017-02-14 | 2017-09-01 | 河钢股份有限公司 | A kind of utilization blast furnace slag fixes carbon dioxide and reclaims the device of sensible heat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106823774A (en) | 2017-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106823774B (en) | Device and method for fixing carbon dioxide and recovering sensible heat by using blast furnace slag | |
| CN206454491U (en) | A kind of utilization blast furnace slag fixes carbon dioxide and reclaims the device of sensible heat | |
| CN102303883B (en) | Method for preparing calcium oxide and sulfur by double-atmosphere fluidized roasting of desulfurated gypsum | |
| WO2021115028A1 (en) | Cascade waste heat recovery apparatus and method for pyrolysis and gasification using solid particle heat carrier | |
| CN102442650B (en) | Method for producing sulfuric acid and co-producing calcium carbide by phosphogypsum | |
| CN106984169B (en) | Denitration system and method directly utilizing heat of sinter | |
| CN101575653A (en) | Method and device for separating carbon dioxide to improve mass energy of blast furnace gas | |
| CN103787277B (en) | A kind of utilize blast-furnace cement sensible heat to carry out reforming of methane on Ni-Ce method and device | |
| CN113736943A (en) | Direct reduction method for producing sponge iron by converting hydrocarbon-rich gas | |
| CN110982966B (en) | Multi-stage recovery system and method for blast furnace slag and coal gas waste heat | |
| CN106544457B (en) | The CO utilized based on blast furnace slag waste heat recycling and slag charge2Emission-reducing system and method | |
| WO2023202486A1 (en) | System for coupling carbon dioxide capture in flue gas with industrial solid waste-based carbon dioxide mineralization | |
| CN203904284U (en) | System for preparing reducing gas for shaft furnace through catalysis and gasification of coal | |
| CN109943678A (en) | A kind of direct-reduction technique using coal gas of converter production sponge iron | |
| CN206924611U (en) | A kind of sulfur-containing tail gas processing system | |
| CN104046714B (en) | A kind of reduction reaction shaft furnace waste heat recovery cyclic utilization system | |
| CN109437604B (en) | Method for realizing sensible heat recovery and tail gas utilization of burnt lime by utilizing methane reforming | |
| CN108302953B (en) | Industrial high-temperature solid bulk waste heat recovery system and method | |
| CN201901446U (en) | Pneumatic pulverized coal conveying system | |
| CN203364629U (en) | System for recycling exhaust gas waste heat of rotary kiln of alumina plant | |
| CN206607265U (en) | Coal gas of converter utilizes system | |
| CN202046881U (en) | Device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol | |
| CN111170660A (en) | Lime production system and method | |
| CN216237135U (en) | Direct reduction system for producing sponge iron by converting hydrocarbon-rich gas | |
| CN106823729A (en) | The high-efficiency desulfurization method of denitration and system of a kind of low cost |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |