CN100443843C - Automatization controlling method of energy-saving environmental protection cement clinker calcining kiln - Google Patents
Automatization controlling method of energy-saving environmental protection cement clinker calcining kiln Download PDFInfo
- Publication number
- CN100443843C CN100443843C CNB2007100203542A CN200710020354A CN100443843C CN 100443843 C CN100443843 C CN 100443843C CN B2007100203542 A CNB2007100203542 A CN B2007100203542A CN 200710020354 A CN200710020354 A CN 200710020354A CN 100443843 C CN100443843 C CN 100443843C
- Authority
- CN
- China
- Prior art keywords
- kiln
- clinker
- temperature
- discharging motor
- signal
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The present invention is an automatic control method for energy saving environment protection cement clinker calcining kiln. A temperature sensor collects the kiln clinker calcining condition information and detects the burnt belt temperature. The computer processes the information and temperature data and then outputs the control signal of the discharging motor and blower rotation speed, and controls the distribution of the burnt belt, balances the wind resistance in the kiln, controls the rotation speed of the discharging motor and the blower to adjust the stable position for the high temperature belt and upper fire and bottom fire. A clinker position instrument detects the clinker height signal and outputs signals for adjusting the rotation speed of a vertical kiln discharging motor after being processed by computer, and adjusts the balling raw clinker powder amount, kiln clinker surface height stable and kiln ventilation balance. The design of clinker water automatic tracking is adopted in order to ensure the quality of the clinker ball. Advantages: the rotation speed of the kiln blower motor can be adjusted any time, low electricity consume and lower about 3/4 than existing technology, wind resistance in the kiln is balance, low in coal consume, high in unit section output, good clinker quality, intensity is higher than common mechanical vertical kiln about 10-15 MPa, calcining fully, less harmful gas exhaust, and environment protection.
Description
Technical field
What the present invention relates to is the energy saving and environment friendly clinker burning kiln of a kind of major diameter automation control method, belongs to the cement constructional material technical field.
Background technology
Control to cement clinker calcining kiln in the prior art is to adopt the manually operated alternative, because the ratio of height to diameter of mechanical vertical kiln is big, the kiln ventilation resistance is bigger, and the shaft kiln windage extremely is difficult for balance.The kiln internal combustion is incomplete, and noxious gas emission is higher.Adopt manually-operated, operate burdensome on the one hand, output also can't improve on the other hand, and power consumption.When using big bag-type dust equipment to gather dust at it, for avoiding big bagroom dewfall, require shaft kiln wet feed layer thinner, the fire in a stove before fuel is added is more shallow, and coal consumption is bigger, kiln discharge clinker temperature height, cooling effect is relatively poor, and clinker strength is low, and free calcium oxide is higher, and product quality descends.
Summary of the invention
The objective of the invention is to defective, propose a kind of mechanical vertical kiln automation control method at above-mentioned existence.Control the rotating speed of kiln blower fan and kiln discharging main frame respectively with computer, realize the speed of the stable and control discharging of control high temperature clinkering zone automatically.Improve performance accuracy, stopped the artificial incorrect operation phenomenon and taken place, enhance productivity greatly; Windage in more can the autobalance calcining kiln makes that the material burning reaches low consumption, the effect of high yield fully in the kiln.
Technical solution of the present invention: automatization controlling method of energy-saving environmental protection cement clinker calcining kiln is characterized in that the processing step of this method is divided into:
One, gather clinker burning work information in the kiln with temperature sensor, show clinker burning operating mode in the kiln by accurate after the Computer Processing, and the distribution of control combustion zone, windage in the balance kiln realizes completing combustion; The belt temperature is burnt till in detection, and machine data is handled the control signal of back output discharging motor and blower motor rotating speed as calculated, and the rotating speed of control discharging motor and blower fan reaches adjusts air quantity and discharging amount in the kiln, adjusts the stable of the getting angry of high temperature clinkering zone, fire in a stove before fuel is added position;
Operating mode distributes in the described kiln: calcining kiln is divided into three bands from top to bottom: preheating zone, high temperature clinkering zone and salband; Wherein
(1) preheating zone: about 150 ℃ of temperature, the evaporation process of Free water; Clay mineral dehydration and magnesium carbonate take place and begin to decompose in 150～750 ℃ of temperature;
(2) clinkering zone: 750～800 ℃ of temperature, the ablation amount obviously reduces, carbonate decomposition and solid phase reaction, because the endothermic reaction, so heating rate is slow. when temperature is raised to 1100 ℃, decomposition rate increases sharply. and free calcium oxide reaches maximum. and solid phase reaction discharges a large amount of heats, and material has risen 300 ℃.1250～1450～1250 ℃ of temperature. begin to occur liquid phase at 1250～1280 ℃, at 1450 ℃, amount of liquid phase increases, and free calcium oxide absorbs, and the clinker compound forms;
(3) salband: grog continues to move downward, and the auxiliary air lower with temperature meets, and clinker temperature descends;
Described clinkering zone control is with kiln body temperature degree sensor, gathers the temperature sensor information of getting angry with the fire in a stove before fuel is added, and machine data is handled the signal of back output control kiln waist wind work as calculated; Gather the temperature sensor information of control high temperature clinkering zone position, machine data is handled the signal that shaft kiln main air blower, discharging motor speed are adjusted in back output as calculated.
Two, the detected height of materials signal of level-sensing device, machine data is handled the signal that the shaft kiln discharging motor speed is adjusted in back output as calculated, regulates balling-up raw material powder amount size automatically, (when charge level height during greater than L+15cm, increases the pre-watering granulation feeding quantity.When charge level height during, reduce the pre-watering granulation feeding quantity, thereby keep the charge level height constant, (L is that charge level is just established reasonable altitudes) less than L-15cm) highly stable to reach kiln cloth charge level, reach the kiln ventilation balance; (computer installation has a rational gouache ratio, and when output increased or reduce the balling-up amount, water injection system can be according to the size of balling-up amount from the motion tracking design to adopt material water, the reasonable dispensing water yield), make water follow the tracks of feeding coal fast, reach the gouache ratio of desirable balling-up, guarantee the pellet quality.
Advantage of the present invention: precision is good, reduced investment, instant effect.Compare with traditional mechanical vertical kiln, the electricity saving and energy saving effect is remarkable, owing to be to regulate kiln blower motor rotating speed at any time according to operating mode in the kiln, so power consumption is lower, the unit power consumption of kiln is a 5-8KWh/ ton grog, than low 3/4 (standard machinery shaft kiln unit power consumption is a 16-20KWh/ ton grog) of standard machinery shaft kiln, while closing along with kiln face gathering hole, the middle part ventilates and improves, and the interior windage of kiln is balance more, effectively reduces coal consumption, improved unit cross section output, general heat consumption of clinker 650Kcal/kg-cl, grog standard coal consumption 95kg, the cross section output 6-8t/m2 of unit.Because unit cross section output improves, investment can be saved half under the prerequisite of equivalent production capacity; Because flowing resistance is little, kiln ventilation improves, and helps burning till fast, so clinker quality is good, grog f-Cao descends, and 28 days compression strength of grog is greater than 65MPa, than the high 10-15Mpa of standard machinery shaft kiln; Because calcining fully in the kiln, noxious gas emission is few, produces more cleaning, more environmental protection.
Description of drawings
Accompanying drawing 1 is that the present invention adopts heat sensor to measure kiln axially and kiln Temperature Distribution all around, by the FB(flow block) of Computer Processing.
Accompanying drawing 2 is by level-sensing device test kiln wet feed layer height, adjusts the FB(flow block) of pre-watering granulation amount.
Computer shown in the figure is optional can select for use biaxial rneader or general mixer, level-sensing device can select for use radar type or infrared-type or pulsed or general distance mearuring equipment, temperature sensor can select general temperature sense equipment for use with industrial computer or general computer, mixer.
The specific embodiment
Contrast accompanying drawing 1, energy-saving environmental protection cement clinker calcining kiln automation control adopts heat sensor to measure kiln axially and kiln Temperature Distribution all around, and the little current signal of the temperature that records is converted into temperature digital by transmitter shows that signal flows to computer, computer is adjusted blower fan and discharging engine speed by frequency converter (prior art), thereby adjust fan delivery and discharging amount, make it relatively stable at a fixing proper height to adjust the bottom fire layer height.Generally, when computer reflected fire in a stove before fuel is added temperature greater than 1200 ℃, computer improved the blower motor frequency, thereby improved air quantity, impelled on the bottom fire layer and moved.When computer reflection temperature is higher than 1300 ℃ when reaching peak (or rotation speed of fan), computer reduces kiln discharge discharging engine speed, strengthens the discharging amount.When computer reflection temperature was lower than 1000 ℃, computer improved kiln discharge discharging engine speed, strengthens the discharging amount.When computer reflection temperature is higher than 900 ℃ (or main motor frequency greater than 1.5 times of normal discharging frequency time), computer reduces the blower motor frequency, reduces air quantity, moves down to impel bottom fire layer.
Contrast Fig. 2 by level-sensing device test kiln wet feed layer height, adjusts the pre-watering granulation amount, when level-sensing device is tested the charge level height greater than L+15cm, increases the pre-watering granulation feeding quantity.When level-sensing device is tested the charge level height less than L-15cm (L is that charge level is just established reasonable altitudes), reduce the pre-watering granulation feeding quantity, thereby keep the charge level height constant.By above control method, guarantee that the shaft kiln bottom fire layer is stable, guarantee the stable calcining of shaft kiln.
During work, when moving on the fire in a stove before fuel is added, accelerate the discharging motor speed, when the discharging motor speed reaches capping, start second program blower motor rotating speed that slows down;
When the fire in a stove before fuel is added moves down, accelerate the blower motor rotating speed, when the blower motor rotating speed reached capping, the discharging motor speed slowed down.
The signal that level-sensing device by the kiln face provides is regulated balling-up amount on the kiln automatically, regulates kiln discharging amount automatically.
The present invention has realized that shaft kiln enterprise to the transformation of high-quality, energy-conservation, joint consumption direction, has realized shaft kiln Enterprise automation operates, and compares with traditional handwork and has saved human cost, having strengthened the work effect Rate. The sustainable development of enterprise production and management shines more great vitality of shaft kiln enterprise, for extensively A road that has more prospect is explored in the survival and development of big shaft kiln enterprise.
Claims (2)
1, automatization controlling method of energy-saving environmental protection cement clinker calcining kiln is characterized in that the processing step of this method is divided into:
One, gather clinker burning work information in the kiln with temperature sensor, show clinker burning operating mode in the kiln by accurate after the Computer Processing, and the distribution of control high temperature clinkering zone, windage in the balance kiln, burning is complete; The detection burning zone temperature, machine data is handled the control signal of back output discharging motor and rotation speed of fan as calculated, and the rotating speed of control discharging motor and blower fan is adjusted high temperate zone and is got angry, the settling position of the fire in a stove before fuel is added;
Two, the detected height of materials signal of level-sensing device, machine data is handled the signal that the shaft kiln discharging motor speed is adjusted in back output as calculated, regulates balling-up raw material powder amount size automatically, and is highly stable to reach kiln cloth charge level, reaches the kiln ventilation balance; Adopt material water to design, make water follow the tracks of material level fast, reach the gouache ratio of desirable balling-up, guarantee the pellet quality from motion tracking.
2, automatization controlling method of energy-saving environmental protection cement clinker calcining kiln according to claim 1, it is characterized in that described clinkering zone control is with kiln body temperature degree sensor, collection is got angry and the temperature sensor information of the fire in a stove before fuel is added, and machine data is handled the signal of back output control kiln waist wind work as calculated; Gather the temperature sensor information of control high temperature clinkering zone position, machine data is handled the signal that shaft kiln main air blower, discharging motor speed are adjusted in back output as calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100203542A CN100443843C (en) | 2007-02-15 | 2007-02-15 | Automatization controlling method of energy-saving environmental protection cement clinker calcining kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100203542A CN100443843C (en) | 2007-02-15 | 2007-02-15 | Automatization controlling method of energy-saving environmental protection cement clinker calcining kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038130A CN101038130A (en) | 2007-09-19 |
| CN100443843C true CN100443843C (en) | 2008-12-17 |
Family
ID=38889198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100203542A Expired - Fee Related CN100443843C (en) | 2007-02-15 | 2007-02-15 | Automatization controlling method of energy-saving environmental protection cement clinker calcining kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100443843C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229475B (en) * | 2011-04-18 | 2012-11-28 | 唐本法 | Control system and method for cement ingredients |
| CN107270303B (en) * | 2017-06-28 | 2018-12-18 | 光大环境科技（中国）有限公司 | A kind of rotary kiln method for controlling rotation and its control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044449A (en) * | 1989-01-18 | 1990-08-08 | 斯米德恩公司 | Make the method and the equipment of cement clinker |
| US5707444A (en) * | 1994-04-21 | 1998-01-13 | F. L. Smidth & Co. A/S | Method for controlling the temperature in a kiln |
| CN2294437Y (en) * | 1996-12-24 | 1998-10-14 | 山东铝业公司 | Automatic control device for rotary-drum kiln thermodynamic process |
| US5882190A (en) * | 1997-12-02 | 1999-03-16 | Doumet; Joseph Elias | Control of cement clinker production by analysis of sulfur in the end product |
-
2007
- 2007-02-15 CN CNB2007100203542A patent/CN100443843C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044449A (en) * | 1989-01-18 | 1990-08-08 | 斯米德恩公司 | Make the method and the equipment of cement clinker |
| US5707444A (en) * | 1994-04-21 | 1998-01-13 | F. L. Smidth & Co. A/S | Method for controlling the temperature in a kiln |
| CN2294437Y (en) * | 1996-12-24 | 1998-10-14 | 山东铝业公司 | Automatic control device for rotary-drum kiln thermodynamic process |
| US5882190A (en) * | 1997-12-02 | 1999-03-16 | Doumet; Joseph Elias | Control of cement clinker production by analysis of sulfur in the end product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101038130A (en) | 2007-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101811839B (en) | Method for producing cement clinker by calcining chalk | |
| CN106444914B (en) | A kind of tunnel oven environment adjustment method and kiln temperature self-regulation device | |
| CN100443843C (en) | Automatization controlling method of energy-saving environmental protection cement clinker calcining kiln | |
| CN203782042U (en) | Mechanical mixing small-granularity lime shaft kiln | |
| CN104229855A (en) | Process for on-line heating and oxidation of desulfurized fly ash by virtue of flue gas from power generating boiler or sintering machine | |
| CN205011649U (en) | Novel environmental protection limekiln | |
| CN104261708A (en) | Energy-saving chemical gypsum drying and calcining system | |
| CN103570258A (en) | Production process automatic control system of gas burning lime shaft kiln | |
| CN203249490U (en) | Electromagnetic induction heating rotary kiln | |
| CN102878792A (en) | Method and device for automatically controlling hot working state of block-shaped wet blank chamber type drying chamber | |
| CN105330178B (en) | A kind of method that production active lime is transformed using cement producing line | |
| CN102815876B (en) | Method for preparing quicklime by continuously calcining limestone in shaft kiln | |
| CN206256053U (en) | A kind of turning-over device automatic control system based on touch-screen | |
| CN204079792U (en) | A kind of two sleeve lime shaft kiln | |
| CN202131228U (en) | Device for calcining beta-type ceramic mould gypsum | |
| CN203333491U (en) | Energy-saving environment-friendly cement clinker preparation system | |
| CN203333492U (en) | System for producing pulverized coal by virtue of kiln head waste heat of clinker firing system | |
| CN201785421U (en) | Blast furnace distribution control system | |
| CN106434269A (en) | Touch-screen-based automatic control system for fermented grain overturning machine and control method | |
| CN210163345U (en) | Calcine burning furnace with temperature regulation function | |
| CN206467150U (en) | Plaster of Paris calcine technology equipment | |
| CN1012579B (en) | Comprehensive utilization of cr dregs by detoxicated melting cr dregs | |
| CN212409360U (en) | Accurate device that adds of raw materials for active limestone production | |
| CN210181472U (en) | Intelligent control device for feeding sulfur into furnace of sugar refinery | |
| CN110156351B (en) | Temperature control system of calcium oxide calcining furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20150215 |
|
| EXPY | Termination of patent right or utility model |