CN102617020B - Process for producing foam glass by using natural gas as fuel and roller kiln used by same - Google Patents
Process for producing foam glass by using natural gas as fuel and roller kiln used by same Download PDFInfo
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- CN102617020B CN102617020B CN201210052154.6A CN201210052154A CN102617020B CN 102617020 B CN102617020 B CN 102617020B CN 201210052154 A CN201210052154 A CN 201210052154A CN 102617020 B CN102617020 B CN 102617020B
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Abstract
The invention provides a large production foam process of foam glass, which uses natural gas as fuel, and utilizes a variable frequency motor to drive a roller shaft to convey foam moulds. The effective inner width of a kiln body reaches 2.3 meters, three-row materials can be performed simultaneously, the whole kiln body is divided into ten independent areas, and the areas are mutually separated by using fire stopping walls and fire stopping curtains. A cold air pipe is installed on the side face of the ninth area, a smoke discharging fan is installed at the top of the ninth area, and an air inlet pipe, the smoke discharging fan and a pressure transmitter are integrally controlled through a programmable logic controller (pIc) so as to guarantee that stable kiln pressure in a foam kiln meets requirements of foaming. Fire nozzles are vertically arranged on the other 9 areas, the vertically-arranged fire nozzles at each area have independent control modules, piping and instrument diagram (PID) self stabilization is utilized, temperature of the fire nozzles are guaranteed, burning atmosphere is changed through regulation of flow-limiting valves and ratio valves on an air pipe and a gas pipe, and stable atmosphere is guaranteed.
Description
Affiliated technical field
The present invention relates to a kind of roller kiln of natural gas as fuel production foam glass technology and use of take.
Background technology
Multicellular glass is the glasswork that a kind of inside is full of countless small pores, is uniform gas phase and solid system.Its pore accounts for the 80-90% of cumulative volume, and the size of pore is 0.5-1.5mm.Multicellular glass is the earliest nineteen thirty-five France St.Gobain Developed, goods are at that time to using calcium carbonate as whipping agent, take glass powder as raw material, after heating in fireproof die, foaming and anneal, the pumice shape material of making, this method is called " single stage method ", after charging, at same mould and kiln, foam and anneal, and obtain goods.Subsequently, the state such as U.S., moral, USSR (Union of Soviet Socialist Republics) ,Ying, Czech, Japan has delivered many patents and the research report of relevant multicellular glass research and production.At present, generally adopt in the world " two step method " to produce multicellular glass, take sand, soda ash etc. be raw material fusion cast glass, and interpolation whipping agent is made the completely independently multicellular glass of CAB structure.The feature of " two step method " is to foam in foaming kiln, carries out subsequently the demoulding, and the blank after the demoulding enters annealing in annealing furnace again becomes product.China also starts to have carried out research and the production of multicellular glass late 1950s, aspect sound absorption and adiabatic heat-insulation, be widely used, since 2010, lifting along with building heat preservation fire-protection system, the high-performance of multicellular glass in building heat preservation fire prevention obtained abundant displaying and approval, and society has higher requirement for production capacity and the performance of multicellular glass.
The technique of producing from present multicellular glass, the key factor that affects foam glass product production capacity and performance has: the preparation of raw-material selection, admixtion, batching mode, mode of movement, foam process, annealing process.And wherein mode of movement and foam process are most critical factors.What traditional technology adopted is orbit transports, kiln is tunnel kiln, can only single pan feeding, production capacity is little, and efficiency is low, the production line of current domestic production capacity maximum only single line is produced 10000 cubic metres per year, take electrically heated as main, and firing temperature is low, non-uniform temperature, product type is single, and product performance (unit weight, heat conduction, resistance to compression, water-intake rate, rupture modulus etc.) and stability and international product also have certain gap.
Summary of the invention
Low in order to solve in domestic existing production technique level of automation, work under bad environment, product performance are poor, and production capacity is little, and the deficiency that production efficiency is low the invention provides a kind of roller kiln of natural gas as fuel production foam glass technology and use of take.
To achieve these goals, the present invention adopts following technical scheme:
Take natural gas as fuel production foam glass technology, its step is divided into preheating, sintering, foaming, stable, cooling, reheat six sections, these six sections realize by 9 independent heating districts and an air intake smoke evacuation district, the 1st district is preheating section, 2-4 district is sintering stage, 5-7 district is foaming section, the 8th district is stable section, the 9th district is cooling section, cooling section is to utilize both sides blast pipe and top smoke exhaust fan, reduce the temperature in this district, be used for shrinking foam and diaphragm capsule, 10 district is the section of reheating, this section is by diaphragm capsule is heated, foam is separated with diaphragm capsule, multicellular glass after kiln discharge just can easily take out and enter annealing furnace annealing from diaphragm capsule rapidly.
Roller kiln be divided into preheating, sintering, foaming, stable, cooling, reheat six sections, in the temperature in each section of kiln body:
Preheating section: temperature 690-730 degree Celsius, length 3.5-4.5 rice, heat-up time 7.5-10 minute,
Sintering stage: temperature 680-760 degree Celsius, length 8-10.5 rice, heat-up time 20-25 minute,
Foaming section: temperature 750-960 degree Celsius, length 9-11 rice, heat-up time 20-27 minute,
Stable section: temperature 760-930 degree Celsius, length 5-6 rice, heat-up time 10-15 minute,
Cooling section: temperature 680-500 degree Celsius, length 4-7 rice, cooling time 13-18 minute,
The section of reheating: temperature 590-690 degree Celsius, length 2-3 rice, heat-up time 5.5-7.5 minute.
Between the kiln body of each section, by refractory materials, separate, on the top of roller-way, with prefabricated ceramic fiber module, separate, and the spacing of roller-way is controlled between 35-45cm, utilize light-weight refractory brick masonry firebreak in the bottom of roller-way, height is neat with roll shaft.Thermopair is installed respectively in mid-way in each district up and down, for monitoring and regulate and control the temperature in this region.
On kiln structure, at the bottom of kiln and kiln side all adopts is that inside is built light-weight insulating brick by laying bricks or stones, the middle ceramic fiber blanket of filling, external bracing stainless steel frame structure, kiln top adopts inner prefabricated ceramic fiber module, external bracing stainless steel frame structure.
In kiln body, carry the 2520 stainless steel roll shafts that adopt diameter 140mm, the spacing that keeps 305mm between roll shaft, high temperature resistant bearing is equipped with at roll shaft two ends, bearing base is fixed on the channel steel cross beam on kiln body both sides, all roll shaft fore-and-aft clearances are consistent, remain in same level, and the roll shaft end of kiln body one side is equipped with heat-resistant antifriction gear, between gear, with heat-resistant antifriction chain, connect, every 16 roll shafts are driven by a variable-frequency motor.
The present invention is by take the foaming kiln that natural gas is fuel, adopt burner to heat up and down the admixtion in diaphragm capsule or foam, by temperature, pressure and atmosphere are controlled, product performance improve greatly, its single line list annual capacity can reach 10000-70000 cubic meter, and level of automation is high.
Accompanying drawing explanation
Fig. 1 is process flow sheet,
Fig. 2 is the front sectional drawing of kiln body,
Fig. 3 is the cutaway side view of kiln body,
Fig. 4 is foaming kiln combustion arrangement structure iron,
Fig. 5 is the structure iron of cooling section.
Embodiment
Below in conjunction with accompanying drawing, further illustrate:
The utility model solves its technical problem and has mainly adopted following mode to realize:
As shown in Figure 1.Its manufacturing processed is divided into preheating, sintering, foaming, stable, cooling, reheat six stages, these six stages realize by 9 independent heating districts and an air intake smoke evacuation district, the 1st district is pre-heating stage, 2-4 district is the sintering stage, 5-7 district is foaming stages, the 8th district is the steady stage, the 9th district is cooling stages, cooling stages is to utilize both sides blast pipe and top smoke exhaust fan, reduce the temperature in this district, be used for shrinking foam and diaphragm capsule, 10 district is for reheating the stage, this stage is by diaphragm capsule is heated, foam is separated with diaphragm capsule, multicellular glass after kiln discharge just can easily take out and enter annealing furnace annealing from diaphragm capsule rapidly.
Whole technological process except the 9th district be cooling zone, all the other Dou Shi independent heating districts, 9 districts, take natural gas as fuel, adopt burner to heat up and down the admixtion in diaphragm capsule or foam, by rational temperature, pressure and atmosphere, control, product performance improve greatly, and its performance meets and exceeds the performance of international product.
One, the energy-conservation foaming kiln that adopts roller-way to carry
1, rational kiln structure
On kiln structure, at the bottom of kiln and kiln side all adopts is that inside is built light-weight insulating brick 1 by laying bricks or stones, the middle ceramic fiber blanket 2 of filling, external bracing stainless steel 3 skeleton constructions, kiln top adopts inner prefabricated ceramic fiber module 4, external bracing stainless steel frame structure.Total is with reference to Fig. 2: the front cross-sectional view of kiln body.Effective kiln body inner width of 230mm can be entered three discharges simultaneously, also can meet the foaming of the product of the different sizes of different model.
2, roller-way that can independent variable frequency adjustment is carried
In kiln, carry the 2520 stainless steel roll shafts that adopt diameter 140mm, the spacing that keeps 305mm between roll shaft, high temperature resistant bearing is equipped with at roll shaft two ends, bearing base is fixed on the channel steel cross beam on kiln body both sides, all roll shaft fore-and-aft clearances are consistent, remain in same level, the roll shaft end of kiln body one side is equipped with heat-resistant antifriction gear 5, between gear, with heat-resistant antifriction chain 6, connect, every 16 roll shafts are driven by a variable-frequency motor 7, speed can regulate as required, with reference to Fig. 3: the cutaway side view 3 of kiln body.
3, body of heater is carried out to subregion isolation
Whole foaming kiln can according to production capacity need to build up 32-43 rice long, according to the requirement of foam process, kiln body is divided into 10Ge district, between Qu Yuqu, separate, high to roll shaft with light-weight refractory brick masonry firebreak at the bottom of kiln, firebreak 13 will be avoided nozzles and roll shaft, and kiln top-hung is hung prefabricated ceramic fiber module as the fiery curtain 12 of gear, and the spacing of keeping off between fiery curtain and roll shaft is 350mm left and right.Cold wind mouth 14, blower fan 17 and chimney are installed in cooling zone, and blower fan 17 connects cold wind mouth 14 by solenoid valve 15, and pressure unit 19 is connected the smoke exhaust fan 18 on chimney by signal wire 21 with PC22, effectively control the furnace pressure in kiln, as shown in Figure 5.
Two, take the firing system that Sweet natural gas is fuel
Foaming kiln is usingd Sweet natural gas 8 as fuel.Sweet natural gas is a kind of clean, economic energy, calorific value is high, composition and calorific value are stable, the natural gas source of China is very abundant, the transportation of Sweet natural gas and very easy to use, the nontoxic noresidue of carbonic acid gas that Sweet natural gas produces in foaming process, is wrapped in multicellular glass, can promote the heat-insulating property of multicellular glass.
Each district of foaming kiln,, the situations such as heat radiation of kiln body calculate the required heat in each district, selects suitable burner and quantity thereof according to the calorific value of heat and Sweet natural gas according to the quality of ball milling powder in product production capacity, diaphragm capsule quality, diaphragm capsule.Whole foaming kiln provides combustion air by a Fans, and combustion air is transported to each district through a house steward, and each district configures subtube according to quantity combusted.The combustion gas used of burning, after voltage-regulation voltage-stabilization, is also transported to each district through a house steward.The gas line in each district and blast main are according to being divided into up and down two branch roads, and two branch roads are assigned to uniformly after mixing tank mixes and arrive each nozzles again according to pressure drop again.Total as shown in Figure 3
Corresponding instrument and element are installed in blast main and gas line, are formed firing system.Firing system has two kinds, and a kind of is the fast burn mixing before mouth, and a kind of is premix combustion systems, and these two systems are all to provide combustion air by blower fan, and the Sweet natural gas of usining after voltage-regulation voltage-stabilization is as fuel.But these two firing systems differ from one another again.
Three, accurate furnace pressure, temperature and atmosphere are controlled
1, pressure control
High performance multicellular glass, in the process of foaming, needs a stable pressure-fired.The good airproof performance of the whole body of heater of foaming kiln, kiln head and tail is uncovered little, has reduced external influence.In Second Region, 4th district, SECTOR-SEVEN, 9th district setting pressure transmitters respectively, nine kiln top, district dress chimneys, chimney breast is loaded onto smoke exhaust fan, and the variable-frequency motor of smoke exhaust fan and the pressure unit of SECTOR-SEVEN are chain by upper computer, thereby guarantees the furnace pressure of a reasonably stability.
2, temperature is controlled
Two thermopairs are equipped with at the top in each district of foaming kiln, and a thermopair is each side housed, and thermopair is avoided nozzles, is uniformly distributed.The nozzles in each district are according to separating up and down.
3, atmosphere is controlled
The atmosphere of foaming kiln control because of firing system different different, for mixing fast burn before mouth, his atmosphere control is that air and the gas flow by monitoring before each nozzles realizes, and in the situation that nozzles work, uses differential manometer to test respectively the pressure reduction of blast main and gas line up-hole plate, according to the model of orifice plate, look into differential pressure flow synopsis, find corresponding air flow quantity and gas flow, just can theoretical air-fuel ratio, for the first five district, air-fuel ratio is controlled between 6-8.Hou Wu district air-fuel ratio is controlled at 10-12.For air-fuel ratio nozzles in scope not, can realize by adjusting air restrictor or the combustion gas flow-limiting valve of corresponding nozzles.For premix combustion systems, his atmosphere is controlled by gas mixture in monitoring mixed pipe line and is realized, in the situation that nozzles work, use flue gas analyzing apparatus to extract mixture combustion from the monitoring holes of mixed pipe line, determine the atmosphere of burning, for the first five district, atmosphere must be controlled at complete reduced state, and for Hou Wuqu, atmosphere must be controlled at perfect combustion state, if certain district's atmosphere is not right, can realize by adjusting air/gas proportion regulating valve in this district's gas line.
Claims (5)
1. take natural gas as fuel production foam glass technology for one kind, it is characterized in that: its step at roller kiln is divided into preheating, sintering, foaming, stable, cooling, reheat six sections, these six sections realize by 9 independent heating districts and an air intake smoke evacuation district, the 1st district is preheating section, 2-4 district is sintering stage, 5-7 district is foaming section, the 8th district is stable section, the 9th district is cooling section, cooling section is to utilize both sides blast pipe and top smoke exhaust fan, reduce the temperature in this district, be used for shrinking foam and diaphragm capsule, 10 district is the section of reheating, this section is by diaphragm capsule is heated, foam is separated with diaphragm capsule, multicellular glass after kiln discharge just can easily take out and enter annealing furnace annealing from diaphragm capsule rapidly, in temperature in each section of kiln body:
Preheating section: temperature 690-730 degree Celsius, length 3.5-4.5 rice, heat-up time 7.5-10 minute,
Sintering stage: temperature 680-760 degree Celsius, length 8-10.5 rice, heat-up time 20-25 minute,
Foaming section: temperature 750-960 degree Celsius, length 9-11 rice, heat-up time 20-27 minute,
Stable section: temperature 760-930 degree Celsius, length 5-6 rice, heat-up time 10-15 minute,
Cooling section: temperature 680-500 degree Celsius, length 4-7 rice, cooling time 13-18 minute,
The section of reheating: temperature 590-690 degree Celsius, length 2-3 rice, heat-up time 5.5-7.5 minute.
2. according to claim 1ly take natural gas as fuel production foam glass technology, it is characterized in that: between the kiln body of each section, by refractory materials, separate, separate with prefabricated ceramic fiber module on top at roller-way, and the spacing of roller-way is controlled between 35-45cm, in the bottom of roller-way, utilize light-weight refractory brick masonry firebreak, height is neat with roll shaft, in the mid-way in each district, thermopair is installed respectively up and down, for monitoring and regulate and control the temperature in this region.
3. according to claim 1ly take natural gas as fuel production foam glass technology, it is characterized in that: on kiln structure, at the bottom of kiln and kiln side all adopts is that inside is built light-weight insulating brick by laying bricks or stones, the middle ceramic fiber blanket of filling, external bracing stainless steel frame structure, kiln top adopts inner prefabricated ceramic fiber module, external bracing stainless steel frame structure.
4. according to claim 1ly take natural gas as fuel production foam glass technology, it is characterized in that: in kiln body, carry the 2520 stainless steel roll shafts that adopt diameter 140mm, the spacing that keeps 305mm between roll shaft, high temperature resistant bearing is equipped with at roll shaft two ends, bearing base is fixed on the channel steel cross beam on kiln body both sides, all roll shaft fore-and-aft clearances are consistent, remain in same level, the roll shaft end of kiln body one side is equipped with heat-resistant antifriction gear, between gear, with heat-resistant antifriction chain, connect, every 16 roll shafts are driven by a variable-frequency motor.
5. according to claim 1ly take natural gas as fuel production foam glass technology, it is characterized in that: in cooling zone, be installed into airduct and chimney, the pressure unit on the smoke exhaust fan on chimney and kiln top is chain, effectively controls the furnace pressure in kiln.
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| CN107417124A (en) * | 2016-05-24 | 2017-12-01 | 胡斯友 | For producing environmentally friendly pumice automatic production line |
| CN109053209B (en) * | 2018-08-10 | 2021-07-13 | 北京工业大学 | Method for controlling reducing atmosphere of foamed ceramic kiln |
| US11576837B2 (en) | 2019-10-03 | 2023-02-14 | Jfxd Trx Acq Llc | Multi-zonal roller and method of use thereof |
| CN112824813A (en) * | 2019-11-20 | 2021-05-21 | 佛山金意绿能新材科技有限公司 | Roller kiln combustion system for producing foamed ceramics |
| CN117209126B (en) * | 2023-01-03 | 2024-06-11 | 浙江振申绝热科技股份有限公司 | Foam glass production system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321414A (en) * | 1961-05-18 | 1967-05-23 | Werner H Kreidl | Cellular glass and method of making same |
| CN2142952Y (en) * | 1992-10-12 | 1993-09-29 | 邓家平 | Automatic conical-die type foam glass kiln |
| CN1085527A (en) * | 1992-10-12 | 1994-04-20 | 邓家平 | Roasting technology for foamglass and equipment |
| CN101182124A (en) * | 2007-11-06 | 2008-05-21 | 陕西科技大学 | Method for producing foamed glass by using copper tailings |
| CN101328022A (en) * | 2008-07-16 | 2008-12-24 | 浙江振申绝热科技有限公司 | Circulation production process of foamed glass |
| CN101880128A (en) * | 2010-07-02 | 2010-11-10 | 陕西科技大学 | Method for preparing lightweight high-strength foam glass |
| JP4672039B2 (en) * | 2008-04-10 | 2011-04-20 | 日本建設技術株式会社 | Foamed glass manufacturing apparatus and manufacturing method |
| EP2368854A2 (en) * | 2010-03-17 | 2011-09-28 | Ernst Pennekamp GmbH & Co. OHG | Method for producing products made of cellular glass and other expanding substances, manufactured product and oven for performing the method |
-
2012
- 2012-03-02 CN CN201210052154.6A patent/CN102617020B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321414A (en) * | 1961-05-18 | 1967-05-23 | Werner H Kreidl | Cellular glass and method of making same |
| CN2142952Y (en) * | 1992-10-12 | 1993-09-29 | 邓家平 | Automatic conical-die type foam glass kiln |
| CN1085527A (en) * | 1992-10-12 | 1994-04-20 | 邓家平 | Roasting technology for foamglass and equipment |
| CN101182124A (en) * | 2007-11-06 | 2008-05-21 | 陕西科技大学 | Method for producing foamed glass by using copper tailings |
| JP4672039B2 (en) * | 2008-04-10 | 2011-04-20 | 日本建設技術株式会社 | Foamed glass manufacturing apparatus and manufacturing method |
| CN101328022A (en) * | 2008-07-16 | 2008-12-24 | 浙江振申绝热科技有限公司 | Circulation production process of foamed glass |
| EP2368854A2 (en) * | 2010-03-17 | 2011-09-28 | Ernst Pennekamp GmbH & Co. OHG | Method for producing products made of cellular glass and other expanding substances, manufactured product and oven for performing the method |
| CN101880128A (en) * | 2010-07-02 | 2010-11-10 | 陕西科技大学 | Method for preparing lightweight high-strength foam glass |
Non-Patent Citations (2)
| Title |
|---|
| 同继锋.陶瓷窑炉及其附属设备.《现代建筑卫生陶瓷技术手册》.中国建材工业出版社,2010,489、492-496. * |
| 石棋.建筑陶瓷的干燥与烧成.《建筑陶瓷工艺学》.武汉理工大学出版社,2007,203-205. * |
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