CN1047846A - The heat up water production technique of mud of boiling boiler heat supply generating - Google Patents
The heat up water production technique of mud of boiling boiler heat supply generating Download PDFInfo
- Publication number
- CN1047846A CN1047846A CN89103930A CN89103930A CN1047846A CN 1047846 A CN1047846 A CN 1047846A CN 89103930 A CN89103930 A CN 89103930A CN 89103930 A CN89103930 A CN 89103930A CN 1047846 A CN1047846 A CN 1047846A
- Authority
- CN
- China
- Prior art keywords
- cement
- mud
- heat supply
- production technique
- water
- 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
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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
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- 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
Abstract
The invention discloses the heat up water production technique of mud of a kind of boiling boiler heat supply generating; clay in the cement raw material all replaces with the coal ash after the fuel combustion; it is characterized in that to add the mineralizer (as gypsum, fluorite) of Duoing and to add octane promoter (as CaO, water glass, thickened pulp liquid, plain cement) simultaneously than general cement slurry; the KH value of gained cement clinker can be controlled in 0.65 to 0.88; advantage of the present invention is; fuel ash is converted into cement products; can improve the economic benefit of fluidizing furnace power generation and heat supply, exempt to dig the farmland and help protecting clay resource to reduce SO in the waste gas
3Concentration helps protecting environment.
Description
The present invention is a kind of Cement Production method.
Prior art related to the present invention is that yiyang, hunan bone coal comprehensive utilization factory, high hole, colliery, Pingxiang, Jiangxi power plant generate electricity on boiling boiler with bone coal, bastard coal masonry fuel.Boiling boiler generating is a great achievement in research of finishing during China six or five.It for coal field generate electricity, reduce the fortune coal on the spot, solve the mining area power shortage, utilize low calorific value coal, to reduce aspect such as amount of nitrogen oxides protection environment significant.Existing problems are that cinder is in heaps, need to seek the approach that utilizes.
General manufacture of cement (is example with the shaft kiln cement plant) is that the various crude fuels with cement grind into the raw material powder, adds water and makes spherolite, is sprinkled into uniformly and burns till grog in the shaft kiln, adds 10～40% mixing material again and grinds into cement with a small amount of gypsum.The grog chemical ingredients is controlled at 0.88～0.98 by the KH value, and the hear rate of calcination of chamotte is about 1000 kilocalories/kilogram.
General fluidizing furnace power station is that fire coal is broken into coal grain less than 8 millimeters (being 0～8 millimeter in fact), adds combustion power generation in the fluidizing furnace.Coal-fired thermal value can be controlled in 2000～3500 kilocalories/kilogram (few, the poor coal consumption of good coal consumption is many).The heat of coal only is used to change into electric energy.
The objective of the invention is the cinder after the boiling boiler generating is changed into cement products, reduce cinder and take up an area of, pollute, protect the fields, clay resource, improve economy of power plant benefit and social benefit.
Feature of the present invention is to add Wingdale and other auxiliary material according to coal burning caloricity and coal ash chemical ingredients in fire coal, add again and add octane promoter (as CaO, water glass, thickened pulp liquid, plain cement) simultaneously than general cement slurry 30% to 100% the mineralizer (as gypsum, fluorite) of Duoing and make the fuel pellet that thermal value satisfies the generating needs, the heat that burning produces can make coal ash as water generation reaction mud clinker minerals such as clay composition and Wingdales, steams simultaneously, generates electricity.Like this, with a kind of special kiln of electricity generation boiler as calcine cement.The KH value of the grog that produces can need the different of (as making agricultural aqueous humor mud) with using according to working condition (as furnace temperature etc.), is controlled in 0.65～0.88 the broad range, adds an amount of mixing material, produces the masonry cement of 125～No. 225 several labels.The calorific power of raw material that is mixed with is 2600～3400 kilocalories/kilogram, particle behind the raw material pre-watering granulation (pellet) particle diameter 90% can guarantee in 3～7 millimeters scopes, 80% particle (pellet) can not burst after going into stove (1000～1200 ℃), guarantee stable burning, generating, reduce carry-over loss.Make octane promoter with spent pulping liquor and can reduce the waste liquid discharge capacity; Sulfur effect in Wingdale and the coal has reduced SO again
3Discharge capacity, all help protecting environment.
Example 1: * * grind low hear rate raw material in the raw mill of cement mill, after adopting complete black meal (only 590 kilocalories/kilogram of hear rates) calcination of cement clinker to add 4% gypsum on 2.5 * 8.5 meters machine shaft kilns of φ, can get the cement more than No. 325.
Examination is burnt with crude fuel composition, grog composition.
Loss SiO
2Al
2O
3Fe
2O
3CaO MgO
Wingdale 40.11 5.52 1.28 0.47 50.97 0.47
Shale 6.26 57.38 17.27 8.57 2.26 1.80
Iron powder 1.97 36.23 3.60 50.80 1.94 1.50
Sulfur-bearing
Iron sulphide/8.70 2.69 51.87 2.53 2.35
37.72
Fluorite CaF
2
53.59
Crystal water SO
3
Gypsum 3.70 1.09 0.30 31.49 0.36 43.53
18.04
Attached water
Coal ash 52.40 32.40 7.02 3.45 0.59
0.96
Cement performance
Specific surface area folding strength time of coagulation ultimate compression strength
Numbering stability kg/cm
2Kg/cm
2
Cm
2/ g initial set final set 7 28 7 28
Cement 1 3712 qualified 1: 11 4: 12 46 61 236 364
Cement 2 3252 qualified 1: 25 4: 08 52 68 311 438
Example 2: raw material * * Building Materials Factory preparation, grog * * the chemical plant calcining.
Various crude fuels are by predetermined formulation batching back grinding, the balling-up (fuel pellet) on the pan-pelletizer of band wetter of raw material powder.Transport to then * * replace original fuel (bituminous coal+bone coal) burning boiler on 4 tons of steam boilers in chemical plant.Examination is burnt and is shown, influence is not steamed.The gained cement clinker adds 50% fluidizing furnace cinder and a small amount of gypsum etc., grinds after check the standard that can reach No. 175 masonry cements.
Examination is burnt with crude fuel composition, proportioning (is 0.86 design by KH).
Material name SiO
2Al
2O
3Fe
2O
3CaO MgO CaF
2SO
3Proportioning
Wingdale 0.72 0.52 0.05 55.03 0.13--46
Fluorite 26.02 0.97 0.50 2.34-64.16 1
Iron powder 38.44 9.18 35.06 6.20 1.53 2
Bone coal 52.53 13.53 8.04 8.47 2.54 10
Datong District's coal 46.68 26.44 10.17 5.71 34
Lime 0.06 0.42 0.05 96.66 0.76 2
Gypsum 8.96 1.54 0.43 35.26 0.92-38.02 5
Boiling furnace slag 65.35 22.67 3.59 2.45 1.51
The proximate analysis of coal moisture evaporation divides ash content fixed carbon thermal value
(kilocalorie/kilogram)
Thousand threads/kilogram
Datong District's coal 2.11 20.72 26.11 51.06 21675 (5179)
Bone coal 2.65 7.04 69.12 21.19 7205 (1722)
Advantage of the present invention is both to have guaranteed generating under burning with the essentially identical situation of the gross calorific power of coal, again co-producing cement. Such as 10 tons of boiling boilers that produce in Guangzhou, the caloric value of specified fuels is 3150 ± 200 kilocalories/kilogram. The caloric value of fuel particle during co-producing cement (cement slurry pellet) is 2600～3400 kilocalories/kilogram. Its reason is that the conventional fuel granularity is controlled at 0～8 millimeter, and cement slurry pellet granularity is controlled at 3～7 millimeters more than 90%, has greatly reduced Bed for Fine Coal and has flown to decrease. The heat utilization efficiency of fuel improves, and the burning of fluidized bed furnace is more stable.
The cement grade that this method is produced is not high, but cost is very low. Whole cinders can be changed into useful products, reduce that cinder takes up an area and to the pollution of environment, protection clay resource. As calculating by 6000 kilowatts of units, only need to increase the cement grinding equipment of 3～50,000 tons of scales. Budget is invested about 3,000,000 yuan, produces 50,000 ton/years of calculating as pressing, 50～60 yuan/tons of costs, and 80～90 yuan/tons of prices (price than pulverized limestone is low) only needed to recoup the investment in 2～3 years. Economic benefits be the more important thing is social benefit: spend a small amount of money to process cinder, reduce waste liquid, waste gas (SO3) discharge capacity, improve environment.
Claims (5)
- The production technique of 1, a kind of boiling boiler heat supply, the mud that generates electricity, heats up water, clay in the cement raw material all replaces with the coal ash after the fuel combustion, it is characterized in that to add than general cement slurry and Duo 30% to 100% mineralizer (as gypsum, fluorite), also add octane promoter (as CaO, water glass, thickened pulp liquid, plain cement) simultaneously, the KH value of gained cement clinker can be controlled in 0.65 to 0.88.
- 2, the production technique of a kind of boiling boiler heat supply according to claim 1, the mud that generates electricity, heats up water is characterized in that fuel pellet (cement slurry) thermal value of fluidizing furnace can be controlled in 2600-3400 kilocalorie/kilogram.
- 3, the production technique of a kind of boiling boiler heat supply according to claim 1 and 2, the mud that generates electricity, heats up water is characterized in that said fuel pellet (or claiming the raw material pellet) particle diameter remains on the 3-7mm scope more than 90%.
- 4, the production technique of a kind of boiling boiler heat supply according to claim 1 and 2, the mud that generates electricity, heats up water, it is characterized in that the said fuel pellet that is added with behind the octane promoter, do not burst more than 80% when entering furnace temperature and be 1000-1200 ℃ fluidizing furnace, can stable burning become cement clinker.
- 5, the production technique of a kind of boiling boiler heat supply according to claim 1 and 2, the mud that generates electricity, heats up water is characterized in that said cement clinker adds cinder and admixture can be produced 125-225 label cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89103930A CN1024461C (en) | 1989-06-08 | 1989-06-08 | Technique for heating, power generation, and cement production by fluidized bed-combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89103930A CN1024461C (en) | 1989-06-08 | 1989-06-08 | Technique for heating, power generation, and cement production by fluidized bed-combustion boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047846A true CN1047846A (en) | 1990-12-19 |
| CN1024461C CN1024461C (en) | 1994-05-11 |
Family
ID=4855345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89103930A Expired - Fee Related CN1024461C (en) | 1989-06-08 | 1989-06-08 | Technique for heating, power generation, and cement production by fluidized bed-combustion boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1024461C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007071A1 (en) * | 1995-08-14 | 1997-02-27 | Bureau Of Administrative Service, The Chinese Academy Of Sciences | Process for producing heat and cement clinkers in one boiler, its products, the equipment used and its uses |
| CN1047373C (en) * | 1995-08-14 | 1999-12-15 | 中国科学院 | One furnace two purpose simultaneously concurrent heat and cement clinker producing method, equipment and product |
-
1989
- 1989-06-08 CN CN89103930A patent/CN1024461C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007071A1 (en) * | 1995-08-14 | 1997-02-27 | Bureau Of Administrative Service, The Chinese Academy Of Sciences | Process for producing heat and cement clinkers in one boiler, its products, the equipment used and its uses |
| CN1047373C (en) * | 1995-08-14 | 1999-12-15 | 中国科学院 | One furnace two purpose simultaneously concurrent heat and cement clinker producing method, equipment and product |
| US6468345B1 (en) | 1995-08-14 | 2002-10-22 | The Chinese Academy Of Sciences | Process for producing both steam power and cement clinker simultaneously in one apparatus its products, apparatus and use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1024461C (en) | 1994-05-11 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |