CN1238315A - Process for producing powdered coal ash products as building material with boiler fume - Google Patents
Process for producing powdered coal ash products as building material with boiler fume Download PDFInfo
- Publication number
- CN1238315A CN1238315A CN99114911A CN99114911A CN1238315A CN 1238315 A CN1238315 A CN 1238315A CN 99114911 A CN99114911 A CN 99114911A CN 99114911 A CN99114911 A CN 99114911A CN 1238315 A CN1238315 A CN 1238315A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- building material
- gas
- utilize
- kiln
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/436—Special arrangements for treating part or all of the cement kiln dust
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A process for making fly ash products as building material with boiler fume features that a by-pass piepline is arranged between boiler draught fan and chimney, the boiler fume is led out by draught fan for conditioning, and the conditioned fume is passed into curing kiln in which the building material products made up of slags, fly ash and lime (or calcium carbide dregs) are cured. The acidic gas in fume is adsorbed by said building material to neutralize its strong alkaline matter contained in it, and the afterheat and CO2 gas in fume are used to cure the building material for higher strength. Its advantages reasonable technology and low investment in equipment.
Description
The present invention relates to flue gas processing and flyash and comprehensive utilization of slag technology.
Will discharge a large amount of approximately flue gases during the coal firing boiler burning, discharge flyash and slag simultaneously, contain a large amount of sulfide in institute's discharged flue gas, obnoxious flavour and flue dust such as nitride work the mischief to surrounding environment; The accumulation serious environment pollution of a large amount of slags and flyash.Therefore all study it both at home and abroad and handle and the method for utilizing, so that turn harm into good, the protection environment.To the processing of flue gas desulfurization, prior art is because investment is big, the operative technique complexity, and maintenance cost height, and because gaseous constituent complexity in the flue gas, quantity discharged is big, economic benefit is not remarkable, the employing high chimney emission so general factory is how not treated.To the utilization of coal ash aspect, existing be used to produce pulverized fuel ash cement, steam-cured fly ash brick, fired fly ash brick also utilizes flyash to make the adulterant or the aggregate of some material of construction, also is used to build the road or the technology of agricultural improvement soil or the like.The applicant had once applied in nineteen ninety that " utilizing boiler smoke to produce the method for carbonized silicate building materials products " was also authorized, the patent No.: 90109430.7, this application has proposed to utilize boiler smoke to produce the method for carbonized silicate building materials products, solve some problems that prior art exists, obtained reasonable effect in actual applications; But some complexity of its technology, equipment is many, investment is big, uses maintenance inconvenient.
In order to overcome the deficiency of above-mentioned flue gas utilization and utilization of fly ash aspect, an object of the present invention is the treatment of wastes with processes of wastes against one another, turn harm into good, promptly with slag, flyash and lime (carbide slag) are main production raw material, make the building materials base substrate, place flue gas to handle curing kilns, utilize boiler smoke that the building material made base substrate is carried out maintenance, thereby make powdered coal ash products as building material, to reach the purpose of slag, flyash, smoke comprehensive utilization; Another object of the present invention is: the production method that provides will be simpler more than original technology, the structure of its production line more rationally, reduced investment, easy to use and maintenance.
The present invention constitutes like this: between boiler induced-draft fan (1) and chimney (2) bypass duct is set, utilize induced draft fan (3) that flue gas is drawn, to setter (4), send into the kiln tail that flue gas is handled curing kilns (5) again through the flue gas of regulating after handling, to in the kiln by slag, flyash, lime (or carbide slag) carries out maintenance for the building material made base substrate of main raw material, in maintenance processes, utilize highly basic material (the efficient oxidation calcium) in the base substrate to the CO2 in the flue gas, sour gas such as SO2 adsorb neutralizing treatment, simultaneously utilize CO2 gas and waste heat in the flue gas that base substrate is carried out maintenance again, to make building material made with certain intensity, tail gas is expelled to tail gas funnel (6) emptying from kiln hood, also utilize induced draft fan (3) that flue gas is drawn, to setter (4), send into the end that flue gas is handled curing kilns (5) again through the flue gas of regulating after handling, tail gas is expelled to tail gas funnel (6) emptying from the other end of kiln (5).
Accompanying drawing 1 is a process flow diagram of the present invention.
Compared with prior art, the present invention can be used for sulfur dioxide concentration less than 2% large and medium-sized Industrial Boiler The flue gas processing and utilizing and the comprehensive utilization of flyash, slag, can be used as two-stage dust removal and the desulfurization of boiler smoke Device, the present invention combines flue gas two-stage dust removal, desulfurization and flyash and the utilization of protecting slag together, reduced investment, Social benefit and remarkable in economical benefits; Be that No. 90109430.7 patents are compared with the patent No. particularly, its technology more Add rationally, equipment investment is few, use and maintenance is convenient, economic benefit is more obvious, has reached of the present invention Goal of the invention.
Embodiments of the invention:
Produce flyash standard brick: mainly adopt flyash, slag, lime (or carbide slag) is prepared burden for main raw material, proportioning is: flyash and slag: lime (or carbide slag)=70-85%: 30-15%, stir in adding water after this ratio batching, went into to digest warehousing 3-4 days, add the water stirring again and send into the brick pressing machine moulding, make the standard adobe, send into flue gas with dolly and handle curing kilns, flue gas is drawn from power plant with induced draft fan, to setter, utilize setter to regulate the humidity and the temperature of flue gas, send into flue gas processing curing kilns again, adobe was carried out maintenance 3-7 days through the flue gas of regulating after handling, promptly make finished product, sharp exhausted tail gas is from the tail gas funnel emptying.
Claims (2)
1, utilize boiler smoke to produce the method for powdered coal ash products as building material, it is characterized in that: between boiler induced-draft fan (1) and chimney (2), a bypass duct is set, utilize induced draft fan (3) that flue gas is drawn, to setter (4), send into the kiln tail that flue gas is handled curing kilns (5) again through the flue gas of regulating after handling, to in the kiln by slag, flyash, lime (or carbide slag) carries out maintenance for the building material made base substrate of main raw material, in maintenance processes, utilize highly basic material (the efficient oxidation calcium) in the base substrate to the CO2 in the flue gas, sour gas such as SO2 adsorb neutralizing treatment, simultaneously utilize CO2 gas and waste heat in the flue gas that base substrate is carried out maintenance again, to make the building material made with certain intensity, tail gas is expelled to tail gas funnel (6) emptying from kiln hood.
2, according to the described this method of utilizing boiler smoke to produce powdered coal ash products as building material of claim 1, it is characterized in that: utilize induced draft fan (3) with flue gas draw, to setter (4), send into the end that flue gas is handled curing kilns (5) again through the flue gas of regulating after handling, tail gas is expelled to tail gas funnel (6) emptying from the other end of kiln (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991149114A CN1138722C (en) | 1999-05-31 | 1999-05-31 | Process for producing powdered coal ash products as building material with boiler fume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991149114A CN1138722C (en) | 1999-05-31 | 1999-05-31 | Process for producing powdered coal ash products as building material with boiler fume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1238315A true CN1238315A (en) | 1999-12-15 |
| CN1138722C CN1138722C (en) | 2004-02-18 |
Family
ID=5277944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991149114A Expired - Fee Related CN1138722C (en) | 1999-05-31 | 1999-05-31 | Process for producing powdered coal ash products as building material with boiler fume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1138722C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086949A (en) * | 2016-08-26 | 2016-11-09 | 武汉迪赛环保新材料股份有限公司 | A kind of trivalent chromium plating solution and electro-plating method |
| CN106352314A (en) * | 2016-10-19 | 2017-01-25 | 北京京诚科林环保科技有限公司 | Remained energy utilization system for coke oven flue gas |
| CN107131923A (en) * | 2017-06-15 | 2017-09-05 | 新疆国利衡清洁能源科技有限公司 | Protection system and protection method of gas flowmeter |
| CN111718204A (en) * | 2020-07-01 | 2020-09-29 | 河南开炭新材料设计研究院有限公司 | Honeycomb insulating brick and preparation method thereof |
| CN112062534A (en) * | 2020-08-19 | 2020-12-11 | 安阳贝利泰陶瓷有限公司 | Comprehensive utilization of flue gas with red mud as main raw material and preparation process of aerated concrete product |
| CN115180914A (en) * | 2022-06-22 | 2022-10-14 | 上海市机电设计研究院有限公司 | Preparation method of biomass ash baking-free brick cured by boiler tail gas |
-
1999
- 1999-05-31 CN CNB991149114A patent/CN1138722C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086949A (en) * | 2016-08-26 | 2016-11-09 | 武汉迪赛环保新材料股份有限公司 | A kind of trivalent chromium plating solution and electro-plating method |
| CN106352314A (en) * | 2016-10-19 | 2017-01-25 | 北京京诚科林环保科技有限公司 | Remained energy utilization system for coke oven flue gas |
| CN107131923A (en) * | 2017-06-15 | 2017-09-05 | 新疆国利衡清洁能源科技有限公司 | Protection system and protection method of gas flowmeter |
| CN111718204A (en) * | 2020-07-01 | 2020-09-29 | 河南开炭新材料设计研究院有限公司 | Honeycomb insulating brick and preparation method thereof |
| CN112062534A (en) * | 2020-08-19 | 2020-12-11 | 安阳贝利泰陶瓷有限公司 | Comprehensive utilization of flue gas with red mud as main raw material and preparation process of aerated concrete product |
| CN115180914A (en) * | 2022-06-22 | 2022-10-14 | 上海市机电设计研究院有限公司 | Preparation method of biomass ash baking-free brick cured by boiler tail gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1138722C (en) | 2004-02-18 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |