CN104315844A - Process for producing brick by waste heat drying sludge from sintered brick production line tunnel kiln - Google Patents
Process for producing brick by waste heat drying sludge from sintered brick production line tunnel kiln Download PDFInfo
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- CN104315844A CN104315844A CN201410646331.2A CN201410646331A CN104315844A CN 104315844 A CN104315844 A CN 104315844A CN 201410646331 A CN201410646331 A CN 201410646331A CN 104315844 A CN104315844 A CN 104315844A
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Abstract
The invention discloses a process for producing a brick by waste heat drying sludge from a sintered brick production line tunnel kiln, and the sintered brick production line tunnel kiln includes waste heat from a cooling section of a roasting kiln, a wet sewage sludge bin, a mud conveying pipe, a sludge drying machine, a cyclone dust collector, an induced draft fan, a desulfurizing tower, a spiral conveyer, a dry sludge bin, an air intake pipeline, air exhaust pipelines of sulfurizing and desulfurizing towers in a drying workshop, air exhaust pipelines of sulfurizing and desulfurizing towers in a drying kiln, a drying kiln, an auxiliary heat waste extracting air pipe and a main heat waste extracting air pipe. The wet sludge is conveyed into the wet sewage sludge bin after being gathered, a mud conveying pipe arranged in the wet sewage sludge bin is connected with the sludge dryer, at the same time, the waste heat from the cooling section of the roasting kiln is led into the sludge dryer through the air intake pipeline. The center of the upper part of the roasting kiln is provided with the main heat waste extracting air pipe, both sides of the upper part of the roasting kiln are provided with the auxiliary heat waste extracting air pipe, the roasting kiln and the drying kiln are in parallel arranged, the cyclone dust collector is provided with the induced draft fan, the spiral conveyer is connected with the dry sludge bin, and the induced draft fan is connected with the desulfurizing tower. The process is simple, low in investment, high in reliability and convenient to operate.
Description
Technical field
The present invention relates to brick field fired brick production line tunnel cave Design of ventilation technology and utilize residual heat to dry sludge technology, particularly relating to and utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology.
Background technology
At present, a large amount of mud is failed to obtain rationally process in time and is disposed and become the white elephants such as sewage treatment plant, papermaking and printing and dyeing mill.A large amount of organic matter, germ, parasite and venomous injurant is also contained except containing except ash content in mud, and normal with stench, its any discharge can cause secondary pollution.Also contain a large amount of utilized compositions in mud simultaneously, if Appropriate application then not only can be turned waste into wealth, can also economic benefit be increased.Therefore, effective specific resistance to filtration method can be found to be the major issue realizing environmental improvement protection.Municipal sludge generally refers to the deposit that sewage treatment plant produces in sewage disposal process, the deposit of printing and dyeing and producing in paper production product process; Mud generally also has the mud produced in the desilting processes such as seabeach, lake, marshland.General moisture content is all more than 80%, and intractability is larger.Current Main has Sludge landfill, but still can cause underground water pollution after Sludge landfill, is the way that must forbid; Next is that boiler burns, and found the factory and need to drop into substantial contribution, operating cost is very high, and common people are afraid of that having pollution not allow founds the factory, and the raw material that originally can recycle to having burnt, cause new waste; Be exactly municipal sludge generating in addition, by utilizing generating waste-heat to dry mud, then the mud after drying burnt in fire coal generated electricity when fuel is added to, substantially having accomplished recycling and harmless treatment of rubbish.We are subject to this to inspire, expect utilizing fired brick production line residual heat of tunnel kiln to carry out dewatered sludge, then mud good for mummification is assigned as raw material brickmaking, not only solve residual heat of tunnel kiln Utilizing question but also mud can be made to be utilized by mummification Posterior circle, change into product, realize best economic benefit.Along with improving constantly of brick-making technology, progressively developed baked brick tunnel kiln production line in the last few years, baked brick tunnel kiln production line generally has dry kiln and calcining kiln, and dry kiln and calcining kiln both sides have fixing Yao Qiang and Yao Qiang both sides and top to be all provided with ventilation shaft.Calcining kiln main pipeline connects the intensification section of kiln and the lateral at temperature descending section two ends, the lateral of intensification section is used to control adobe in kiln and constantly heats up burning, reach the temperature requirement needed for sintering, then the flue gas produced in combustion process is collected main pipeline by lateral; The lateral of temperature descending section mainly controls the continuous cooling down of finished bricks sintered, and reaches the requirement of kiln discharge as early as possible.Then by calcining kiln main pipeline the main pipeline of dry kiln of being made a gift to someone by blower fan after the intensification waste heat at two ends and cooling residual heat collection, then have dry kiln main pipeline to make a gift to someone each branch connected, hot blast sent in dry kiln for drying adobe.The waste gas of drying after adobe is collected by dry kiln top ventilation ducts, enters desulfurating dust-removing equipment, be discharged in air after desulfurization and dedusting by blower fan.Waste heat amount in this process due to calcining kiln generation is more, and oven dry adobe waste heat used is less, also has remaining heat not utilize, forms the waste of resource to a certain extent.
Summary of the invention
The object of the invention is to, overcome the deficiencies in the prior art part, there is provided one to utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, utilize fired brick production line residual heat of tunnel kiln to carry out dewatered sludge, then mix proper proportion as brick-making raw material and carry out brickmaking.For effective process of mud, effective utilization of residual heat of tunnel kiln have found best solution, can realize the recycling of kiln heat energy and rubbish, efficiently solve the wasting of resources and problem of environmental pollution.
Of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, include calcining kiln temperature descending section waste heat, wet sludge storage bin, dredging tube, sludge drier, cyclone dust collectors, air-introduced machine, desulfurizing tower, conveying worm and dewatered sludge feed bin.Wet mud is transported to wet sludge storage bin through gathering, and arranges dredging tube and is connected to sludge drier, have calcining kiln temperature descending section waste heat to draw simultaneously and deliver to sludge drier from wet sludge storage bin.The middle position above of calcining kiln, be provided with and take out waste heat air main, the both sides above of calcining kiln are provided with takes out the secondary airduct of waste heat, take out the secondary airduct of waste heat and take out waste heat air main and be aggregated into admission line, be connected to sludge drier by admission line, sludge drier is connected to cyclone dust collectors and conveying worm simultaneously, and conveying worm is connected to dewatered sludge feed bin, cyclone dust collectors are then connected to air-introduced machine, and air-introduced machine is connected to desulfurizing tower again.Calcining kiln and dry kiln are set up in parallel, the heat of calcining kiln temperature descending section waste heat is connected to sludge drier through admission line, at the wet mud that wet sludge storage bin gathers, also connect through dredging tube and be transported to sludge drier, sludge drier is connected with conveying worm, sludge drier is connected with cyclone dust collectors by pipeline again, cyclone dust collectors are connected with air-introduced machine, conveying worm is connected to dewatered sludge feed bin, air-introduced machine then enters desulfurizing tower wind pipe by mummification workshop and is connected to desulfurizing tower, dry kiln then enters desulfurizing tower wind pipe by dry kiln and is connected to desulfurizing tower.
Of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, fired brick production line residual heat of tunnel kiln refers to, fired brick production line tunnel cave is generally divided into dry kiln and calcining kiln, and two kilns are generally set up side by side, as tunnel, in industry, be referred to as tunnel cave.Tunnel cave both sides are provided with kiln wall, and being provided with furred ceiling above kiln wall is that kiln body divides, and middle passage is firing chamber's part, and running in firing chamber has kiln car, and have track below kiln car, kiln car operates in above track, is provided with ventilating duct below kiln car.Yao Qiang both sides are provided with branch duct road, are connected in firing chamber, and lateral is connected with the main ventilation road of kiln top or both sides again.The starting point of distinguished and admirable formation is come as calcining kiln intensification section, enter in calcining kiln temperature-rise period in adobe, extract furnace air out by point branch wind pipe be connected in firing chamber, the air realized in kiln constantly circulates, and extract the heat and flue gas that produce in temperature-rise period out, then import main ventilation pipeline.In this process due to distinguished and admirable effect, achieve adobe and constantly heat up, reach the temperature requirement of sintering.Intensification section main pipeline is connected to the main pipeline of calcining kiln temperature descending section, then is connected in calcining kiln temperature descending section firing chamber by each lateral of temperature descending section, extracts the air in temperature descending section firing chamber out, then imports main ventilation pipeline, has main ventilation pipeline connecting fan.The process of this air circulation has also just extracted the waste heat in finished bricks temperature-fall period, accelerating cooling finished bricks kiln discharge as early as possible out, improves output.Being made a gift to someone in dry kiln firing chamber taking out the make a gift to someone point branch wind pipe of each Yao Qiang both sides of the waste heat wind circulation super-dry kiln owner pipeline come by blower fan again, carrying out the adobe of drying kiln indoor.Gas after drying adobe in dry kiln firing chamber is connected to dry kiln top main pipeline to blower fan by each ventilating opening of top again, desulfurating dust-removing equipment is connected to through blower fan, gas enters in air after desulfurization and dedusting, complete the circulating ventilation of whole tunnel cave, namely make use of the brick blank drying that calcining kiln waste heat carries out in dry kiln, then collect discharge.
The present invention is after completing this tunnel cave ventilating system, do not affecting normal brick blank drying, adobe sinters, under the prerequisite of product quality, one group of ventilation shaft is added again at the temperature descending section top of calcining kiln, lateral is established in the temperature end of this group ventilation shaft temperature descending section, lateral is connected in calcining kiln firing chamber by Yao Qiang both sides, directly to extract in kiln high-temperature residual heat out in the airduct set up by lateral, the air inlet having this airduct to be connected to drying equipment drying machine, realize feeding high-temperature hot-air to drying machine, sludge drying is realized by drying machine screw, and then dried waste gas is connected airduct to air-introduced machine by the exhaust outlet of drying machine, connect airduct by air-introduced machine and enter desulfur denitrate dust collecting deodorizing device, enter after process in air, this completes the technological design utilizing residual heat of tunnel kiln dewatered sludge.
Sludge drying process system has haulage vehicle mud to be transported to scene to pour wet sludge bin into, squeeze in drying machine through mud screw pump by pipeline, auger motion in drying machine, progressively moisture is sloughed under the effect of air cooking, when circulation helical stirring movement is to afterbody discharge gate, mud just becomes the feed particulate material of moisture content 30%-40%, feed bin is transported to again by conveying worm, make brick-making raw material, then preparation brick is mixed according to the ratio of 10%-15% together with other brick-making raw materials, this completes the whole technological design utilizing the brickmaking of fired brick production line residual heat of tunnel kiln dewatered sludge.
technical process of the present invention is divided into two parts:
1., for the waste heat of tunnel cave can be made full use of, add the pipeline that a group is collected waste heat again, for drying the technical flow design of mud at the temperature descending section of calcining kiln.Namely add at the temperature descending section of calcining kiln the pipeline that a group is collected waste heat again, this group ventilation shaft establishes lateral in the temperature descending section temperature end of calcining kiln, lateral is connected in calcining kiln firing chamber by Yao Qiang both sides, directly to extract in kiln high-temperature residual heat out in the airduct set up by lateral, this airduct is had to be connected to the air inlet of drying equipment drying machine again, realize feeding high-temperature hot-air to drying machine, sludge drying is realized by drying machine screw, and then dried waste gas is connected airduct to air-introduced machine by drying machine exhaust outlet, connect airduct by air-introduced machine and enter desulfur denitrate dust collecting deodorizing device, enter after process in air, complete the design of the whole technique utilizing calcining kiln residual heat to dry sludge to ventilate.A mummification Design of Production Line of a Here it is tunnel cave and a drying machine, can design two tunnel caves by this design and mate two mummification Design of Production Line etc. by that analogy.
2. utilize using residual heat from kiln furnace to realize brickmaking after sludge drying.Sludge drying system has haulage vehicle mud to be transported to scene to pour wet sludge bin into, squeeze in drying machine through mud screw pump by pipeline, auger motion in drying machine, under the effect of air cooking, progressively slough moisture, when circulation helical stirring movement is to afterbody discharge gate, mud just becomes the feed particulate material of moisture content 30%-40%, feed bin is transported to again by conveying worm, whole drying process is totally-enclosed design, and the stink of mud is not distributed, pollution-free in mummification workshop.Then mix to join together with other brick-making raw materials carry out brickmaking by making the ratio of brick-making raw material according to 10%-15%, this completes the whole technological design utilizing the brickmaking of fired brick production line residual heat of tunnel kiln dewatered sludge.。
Described UTILIZATION OF VESIDUAL HEAT IN have passed through accurate Calculation, and general principle is: airduct and air quantity will calculate coupling according to tunnel cave section size; Blower fan configuration size will calculate coupling according to tunnel cave section size, and how many raw material output of mummification also and will can utilize the amount of waste heat to mate according to kiln section size.Can determine the output of sludge drying according to different tunnel cave sections, namely reach does not affect finished bricks and normally produces and product quality requirement, to greatest extent waste heat can be used for again the requirement of dewatered sludge brickmaking.
the major advantage of fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology designing technique is utilized to be:
1. achieve effective utilization of brick production line residual heat of tunnel kiln, saved the energy, achieve the comprehensive utilization of resource;
2. effectively cracked a sludge drying difficult problem, for the resource recycling of rubbish creates condition;
3. utilize mud as raw material brickmaking, garbage conversion has been become product, accomplish the resource recycling of rubbish;
4. global design technique is simple, small investment, convenient construction, and good stability is safe and reliable;
5. by scientific disposal to mud, available protecting environment, benefit the nation and the people, benefit future generations offspring;
6. this invention not only has good good in economic efficiency, more has social benefit, is worthy to be popularized.
Of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, integrated artistic is simple, small investment, and implementation and operation is convenient, and good stability, reliability is high.Use and of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology; can economize energy preferably, realize the comprehensive utilization of resource, effectively crack a difficult problem for sludge drying; for the resource recycling of rubbish creates condition; utilize mud as first brickmaking, garbage conversion has been become product, accomplish the resource recycling of rubbish; by the scientific disposal to mud; effectively protect environment, benefit the nation and the people, benefit future generations offspring.
Accompanying drawing explanation
Accompanying drawing 1 is dewatered sludge process chart; Accompanying drawing 2 utilizes calcining kiln residual heat to dry sludge brickmaking technology to design general layout; Accompanying drawing 3 is that calcining kiln waste heat pipeline is to drying machine piping diagram; Accompanying drawing 4 is calcining kiln cross-sectional views; Accompanying drawing with reference to the wide 4.8 meters of tunnel furnace production lines of internal diameter.1-calcining kiln cooling waste heat 2-wet sludge storage bin 3-carrier pipe 4-sludge drier 5-cyclone dust collectors 6-air-introduced machine 7-desulfurizing tower 8-conveying worm, 9-dewatered sludge feed bin 10-admission line, 11-mummification workshop is entered desulfurizing tower wind pipe 12-dry kiln and is entered the secondary airduct of desulfurizing tower wind pipe 13-dry kiln 14-take out waste heat 15-take out waste heat air main.
Detailed description of the invention
Referring now to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, be described as follows: of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology in conjunction with the embodiments, include calcining kiln temperature descending section waste heat 1, wet sludge storage bin 2, dredging tube 3, sludge drier 4, cyclone dust collectors 5, air-introduced machine 6, desulfurizing tower 7, conveying worm 8, dewatered sludge feed bin 9, admission line 10, desulfurizing tower wind pipe 11 is entered in mummification workshop, dry kiln enters desulfurizing tower wind pipe 12, dry kiln 13, take out the secondary airduct 14 of waste heat and take out waste heat air main 15.Wet mud is transported to wet sludge storage bin 2 through gathering, and arranges dredging tube 3 and is connected to sludge drier 4, have calcining kiln temperature descending section waste heat 1 to draw through admission line 10 simultaneously and deliver to sludge drier 4 from wet sludge storage bin 2.The middle position above of calcining kiln, be provided with and take out waste heat air main 15, the both sides above of calcining kiln are provided with takes out the secondary airduct 14 of waste heat, take out the secondary airduct 14 of waste heat and take out waste heat air main 15 and be aggregated into admission line 10, be connected to sludge drier 4 by admission line 10, sludge drier 4 is connected to cyclone dust collectors 5 and conveying worm 8 simultaneously, and conveying worm 8 is connected to dewatered sludge feed bin 9, cyclone dust collectors 5 are connected to air-introduced machine 6, and air-introduced machine 6 is connected to again desulfurizing tower 7.Calcining kiln and dry kiln are set up in parallel, the heat of calcining kiln temperature descending section waste heat 1 is connected to sludge drier 4 through admission line 10, at the wet mud that wet sludge storage bin 2 gathers, also connect through dredging tube 3 and be transported to sludge drier 4, sludge drier 4 is connected with conveying worm 8, sludge drier 4 is connected with cyclone dust collectors 5 by pipeline again, cyclone dust collectors 5 are connected with air-introduced machine 6, conveying worm 8 is connected to dewatered sludge feed bin 9, air-introduced machine 6 enters desulfurizing tower wind pipe 11 by mummification workshop and is connected to desulfurizing tower 7, dry kiln 12 enters desulfurizing tower wind pipe 12 by dry kiln and is connected to desulfurizing tower 7.
Of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, fired brick production line residual heat of tunnel kiln refers to, fired brick production line tunnel cave is generally divided into dry kiln and calcining kiln, and two kilns are generally set up side by side, as tunnel, in industry, be referred to as tunnel cave.Tunnel cave both sides are provided with kiln wall, and being provided with furred ceiling above kiln wall is that kiln body divides, and middle passage is firing chamber's part, and running in firing chamber has kiln car, and have track below kiln car, kiln car operates in above track, is provided with ventilating duct below kiln car.Yao Qiang both sides are provided with branch duct road, are connected in firing chamber, and lateral is connected with the main ventilation road of kiln top or both sides again.The starting point of distinguished and admirable formation is come as calcining kiln intensification section, enter in calcining kiln temperature-rise period in adobe, extract furnace air out by point branch wind pipe be connected in firing chamber, the air realized in kiln constantly circulates, and extract the heat and flue gas that produce in temperature-rise period out, then import main ventilation pipeline.In this process due to distinguished and admirable effect, achieve adobe and constantly heat up, reach the temperature requirement of sintering.Intensification section main pipeline is connected to the main pipeline of calcining kiln temperature descending section, then is connected in calcining kiln temperature descending section firing chamber by each lateral of temperature descending section, extracts the air in temperature descending section firing chamber out, then imports main ventilation pipeline, has main ventilation pipeline connecting fan.The process of this air circulation has also just extracted the waste heat in finished bricks temperature-fall period, accelerating cooling finished bricks kiln discharge as early as possible out, improves output.Being made a gift to someone in dry kiln firing chamber taking out the make a gift to someone point branch wind pipe of each Yao Qiang both sides of the waste heat wind circulation super-dry kiln owner pipeline come by blower fan again, carrying out the adobe of drying kiln indoor.Gas after drying adobe in dry kiln firing chamber is connected to dry kiln top main pipeline to blower fan by each ventilating opening of top again, desulfurating dust-removing equipment is connected to through blower fan, gas enters in air after desulfurization and dedusting, complete the circulating ventilation of whole tunnel cave, namely make use of the brick blank drying that calcining kiln waste heat carries out in dry kiln, then collect discharge.
The present invention is after completing this tunnel cave ventilating system, do not affecting normal brick blank drying, adobe sinters, under the prerequisite of product quality, one group of ventilation shaft is added again at the temperature descending section top of calcining kiln, lateral is established in the temperature end of this group ventilation shaft temperature descending section, lateral is connected in calcining kiln firing chamber by Yao Qiang both sides, directly to extract in kiln high-temperature residual heat out in the airduct set up by lateral, the air inlet having this airduct to be connected to drying equipment drying machine, realize feeding high-temperature hot-air to drying machine, sludge drying is realized by drying machine screw, and then dried waste gas is connected airduct to air-introduced machine by the exhaust outlet of drying machine, connect airduct by air-introduced machine and enter desulfur denitrate dust collecting deodorizing device, enter after process in air, this completes the technological design utilizing residual heat of tunnel kiln dewatered sludge.
Sludge drying process system has haulage vehicle mud to be transported to scene to pour wet sludge bin into, squeeze in drying machine through mud screw pump by pipeline, auger motion in drying machine, progressively moisture is sloughed under the effect of air cooking, when circulation helical stirring movement is to afterbody discharge gate, mud just becomes the feed particulate material of moisture content 30%-40%, feed bin is transported to again by conveying worm, make brick-making raw material, then preparation brick is mixed according to the ratio of 10%-15% together with other brick-making raw materials, this completes the whole technological design utilizing the brickmaking of fired brick production line residual heat of tunnel kiln dewatered sludge.
technical process of the present invention is divided into two parts:
1., for the waste heat of tunnel cave can be made full use of, add the pipeline that a group is collected waste heat again, for drying the technical flow design of mud at the temperature descending section of calcining kiln.Namely add at the temperature descending section of calcining kiln the pipeline that a group is collected waste heat again, this group ventilation shaft establishes lateral in the temperature descending section temperature end of calcining kiln, lateral is connected in calcining kiln firing chamber by Yao Qiang both sides, directly to extract in kiln high-temperature residual heat out in the airduct set up by lateral, this airduct is had to be connected to the air inlet of drying equipment drying machine again, realize feeding high-temperature hot-air to drying machine, sludge drying is realized by drying machine screw, and then dried waste gas is connected airduct to air-introduced machine by drying machine exhaust outlet, connect airduct by air-introduced machine and enter desulfur denitrate dust collecting deodorizing device, enter after process in air, complete the design of the whole technique utilizing calcining kiln residual heat to dry sludge to ventilate.A mummification Design of Production Line of a Here it is tunnel cave and a drying machine, can design two tunnel caves by this design and mate two mummification Design of Production Line etc. by that analogy.
2. utilize using residual heat from kiln furnace to realize brickmaking after sludge drying.Sludge drying system has haulage vehicle mud to be transported to scene to pour wet sludge bin into, squeeze in drying machine through mud screw pump by pipeline, auger motion in drying machine, under the effect of air cooking, progressively slough moisture, when circulation helical stirring movement is to afterbody discharge gate, mud just becomes the feed particulate material of moisture content 30%-40%, feed bin is transported to again by conveying worm, whole drying process is totally-enclosed design, and the stink of mud is not distributed, pollution-free in mummification workshop.Then mix to join together with other brick-making raw materials carry out brickmaking by making the ratio of brick-making raw material according to 10%-15%, this completes the whole technological design utilizing the brickmaking of fired brick production line residual heat of tunnel kiln dewatered sludge.。
Described UTILIZATION OF VESIDUAL HEAT IN have passed through accurate Calculation, and general principle is: airduct and air quantity will calculate coupling according to tunnel cave section size; Blower fan configuration size will calculate coupling according to tunnel cave section size, and how many raw material output of mummification also and will can utilize the amount of waste heat to mate according to kiln section size.Can determine the output of sludge drying according to different tunnel cave sections, namely reach does not affect finished bricks and normally produces and product quality requirement, to greatest extent waste heat can be used for again the requirement of dewatered sludge brickmaking.
the major advantage of fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology designing technique is utilized to be:
1. achieve effective utilization of brick production line residual heat of tunnel kiln, saved the energy, achieve the comprehensive utilization of resource;
2. effectively cracked a sludge drying difficult problem, for the resource recycling of rubbish creates condition;
3. utilize mud as raw material brickmaking, garbage conversion has been become product, accomplish the resource recycling of rubbish;
4. global design technique is simple, small investment, convenient construction, and good stability is safe and reliable;
5. by scientific disposal to mud, available protecting environment, benefit the nation and the people, benefit future generations offspring;
6. this invention not only has good good in economic efficiency, more has social benefit, is worthy to be popularized.
Of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, integrated artistic is simple, small investment, and implementation and operation is convenient, and good stability, reliability is high.Use and of the present inventionly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology; can economize energy preferably, realize the comprehensive utilization of resource, effectively crack a difficult problem for sludge drying; for the resource recycling of rubbish creates condition; utilize mud as first brickmaking, garbage conversion has been become product, accomplish the resource recycling of rubbish; by the scientific disposal to mud; effectively protect environment, benefit the nation and the people, benefit future generations offspring.
With reference to the wide 4.8 meters of tunnel cave types of internal diameter, data 1 is dry Air Quantity Required and calculation of heat rate book:
mud brickmaking tunnel cave dry wet base and mud Air Quantity Required and calculation of Heat Load
(with reference to the wide 4.8 meters of tunnel cave types of internal diameter)
one, gas at normal temperature thermal technology value is calculated
Guangdong meteorological data:
Average temperature of the whole year 22 degree, annual precipitation 1696.5 millimeters, average relative humidity is 77%.The hottest 7-8 month, temperature on average 28.0-28.7 degree, the absolute highest temperature 38.7 degree; The coldest for January (indivedual time is February), temperature on average 12.4-13.5 degree, definitely most spirit temperature is-2.6 to spend.
Table look-up and can obtain the saturated vapor pressure of air 22 degree time and be
psw=2.642KPa。
pw=￠psw=0.77×2.642=2.03434KPa
Moisture content: d=0.622 × pw/ (p-pw)=
0.622×2.03434/(101.325-2.03434)=0.01274kg/kg
Dry air enthalpy h=(1.01+1.88d) t+2501d=
（1.01+1.88×0.01276）×22+2501×0.01276=54.62KJ/kg
Dry air air specific weight air specific weight 21.9 degree time is 1.2kg/m^
3
two, the speed that material enters dry kiln is calculated
Annual production: 5,000 ten thousand standard bricks
Working day: 330
The heavy 2.5kg of the every block of standard brick adobe.
Calculate the speed that wet stock enters dry kiln: v=5000 × 10^4 × 2.5/ (330 × 24 × 3600)=4.38kg/s
three, drying system calculates
Drying system divides two parts: one is wet brick bat drying, and two is that mud is dry.Two parts are divided to calculate below.
1, wet brick bat drying calculates required air quantity and thermic load
Water content before brick bat drying: 14%
Water content 6% after dry
Air drying room is preheating to 140 degree, and EGT is 40 degree
The treating capacity of dry material in process
M=v × (1-14%)=4.38 × 0.86=3.77kg siccative/s
Material is into and out of the dry basis moisture content of hothouse
X1=0.14/ (1-0.14)=0.1628kg/kg siccative
X2=0.06/ (1-0.06)=0.06383kg/kg siccative
The amount of transpiring moisture: m=M × (X1-X2)=0.3728kg/s
Enter hothouse air enthalpy=(1.01+1.88 × 0.01274) × 140+2501 × 0.01274=176.6269kj/kg dry air
Go out enthalpy 176.6269KJ/kg dry air equal to entering hothouse air enthalpy moisture content=(176.6269-1.01 × 40)/(1.88 × 40+2501)=0.052879kg/kg dry air of hothouse air
Dry air consumption=0.3728/ (0.052879-0.01276)=9.2878kg/s
Humid air consumption=9.2878 × (1+0.01276)=9.4kg/s
Volume of air: 9.4/1.2=7.738m^
3/ s
Air quantity: 7.738 × 3600=28218.5m^
3/ H
Fan delivery is air quantity × coefficient of expansion × fan safe coefficient
=28218.5×1.37×1.2=?46391m^
3/h
Thermic load=9.2878 × (176.6269-54.62)=1133.18kj
2, mud drying calculates required air quantity and thermic load
Water content before mud drying: 80%
Water content 40% after dry
Air drying room is preheating to 600 degree, and EGT is 150 degree
Disposal ability is 8000kg/h(80%)
Treating capacity 2.22kg/s per second
The treating capacity of dry material in process
M=v × (1-80%)=2.22 × 0.2=0.444kg siccative/s
Material is into and out of the dry basis moisture content of hothouse
X1=0.8/ (1-0.8)=4kg/kg siccative
X2=0.4/ (1-0.4)=0.667 kg/kg siccative
The amount of transpiring moisture: m=M × (X1-X2)=1.48kg/s
Enter hothouse air enthalpy=(1.01+1.88 × 0.01276) × 600+2501 × 0.01276=600.6kj/kg dry air
Go out the enthalpy 652.25KJ/kg dry air equal to entering hothouse air enthalpy of hothouse air
Moisture content=(652.25-1.01 × 150)/(1.88 × 150+2501)=0.17993kg/kg dry air
Dry air consumption=1.48/ (0.17993-0.01276)=8.86kg/s
Humid air consumption=8.86 × (1+0.01276)=8.97.kg/s
Volume of air: 8.86/1.2=7.48m^
3/ s
Air quantity is 7.48 × 3600=26928 m^
3/ h, dries with air quantity 26928 m^
3/ h
Thermic load 8.86 × (652.25-54.62)=5296.2kj
Drying system total heat duties 5296.2+1133.18=6429.4kj
four, siccative burning produce heat and heat of burning reaction
1, the calorific value that produces of siccative
Siccative calorific value is pressed 500kcal/kg and is calculated, 1kcal=4.186kj.
The calorific value of generation per second is 4.38 × 500 × 4.186=9167.34kj.
2, siccative heat of burning reaction:
Siccative clayey quality calculates by 85%: 4.38 × 0.85=3.723kg
It is 0.7446 × 2091=1557kj that AL2O3 content calculates 3.723 × 0.2=0.7446kg heat of burning reaction by 20%
five, heat total expenditure is compared with heat total income
1, total expenditure
Total expenditure is that dry expenditure is paid except the thermal efficiency with heat of burning reaction, and the thermal efficiency calculates by 90%
（1557+6429.4）/0.90=8874kj
2, total income
Total income 9167.34kj, total income and total expenditure are substantially identical.
six, mud drying equipment producer provides data
Dry disposal ability 8t per hour, two-wire is 16t.
Water content before mud drying: 80%
Water content 25%-40% after dry
Dry entering air temperature is 600 degree, and when outlet is 150 degree, air quantity is 30,000 bm
3/ h.
Coincide with calculating data.
seven, conclusion
At native system mud brickmaking tunnel cave, origin of heat is the caloric value of the self-contained coal of adobe.The caloric value per second according to every 5,000 ten thousand Production rate is 9167.34kj, and the consumption of heat is divided into:
1, the heat waste of system is calculated as by 10%: 916.7kj.
2, wet base dry institute consumption of calorie is: 1133.18 kj.
3, mud dry institute consumed energy is: 5296.2kj
4, adobe calcination consumption of calorie: 1557kj
Therefore consumption total amount of heat is 8903kj.
Because total caloric value is greater than total consumption of calorie.Therefore native system can meet production requirement.
With reference to the wide 4.8 meters of tunnel cave types of internal diameter, data 2 is preheating zone and clinkering zone heat Balance Calculation book:
mud brickmaking tunnel furnace preheating zone and clinkering zone heat Balance Calculation
(with reference to the wide 4.8 meters of tunnel cave types of internal diameter)
one, the speed that material enters calcining kiln is calculated
Annual production: 5,000 ten thousand standard bricks
Working day: 330
The heavy 2.5kg of the every block of standard brick adobe.
Calculate the speed that wet stock enters dry kiln: v=5000 × 10^4 × 2.5/ (330 × 24 × 3600)=4.38kg/s
Water content before brick bat drying: 14%
Adobe enters kiln temperature degree by 50 degree of calculating
Clayey content calculates by 85%
AL2O3 content calculates by 20%
The treating capacity of dry material in process
M=v × (1-14%)=4.38 × 0.86=3.77kg siccative/s
Siccative calorific value is pressed 500kcal/kg and is calculated
two, every kg siccative burning Air Quantity Required is calculated:
According to coal burning empirical equation:
V reason=Qnet, ar/4 145+0. 606
Qnet, ar are the net calorific value as received basis of coal, kJ/kg
Kilojoule and kilocalorie conversion scale are 1 kilocalorie=4.186 kilojoule
The material burning required air theoretical value obtaining 1kg500kcal is V
reason=4.186 × 500/4145+0.606=1.11m^
3.
Concerning tunnel cave, because more wind will be flow through in the larger gap on hack and Yao Qiang, kiln top, coefficient of excess air often gets 5 ~ 6.
This calculating coefficient of excess air gets 5.(, and this is that flue gas is from coefficient of excess during kiln)
The material burning required air actual amount of 1kg500kcal is 5.55m^
3.
The exhaust gas volumn produced:
V
cigarette=1. 04Qnet, ar/4 187+0. 77+1. 016 × (α-1) V
reason
V
cigarette=5.8 m^
3.
Required air actual amount per second is 3.77 × 5.55=20.9 m^
3
The actual exhaust gas volumn of generation per second is 3.77 × 5.8=21.9m^
3.
4.8 meters wide kiln air channel area design are 5m^
2.
So kiln high temperature section calculation of wind speed is 4.18 meters/s.
Calcining kiln burning zone burning Air Quantity Required is 4.18 × 5=20.9m
3/ s.
three, heat income:
In mud brickmaking tunnel cave system, heat income is mainly
1, wet blank strip enters heat: (quality × specific heat × temperature)
4.38×（1-0.14）×0.82268×50=155kj。
2, sensible heat brought into by kiln car: (quality × specific heat × temperature)
Kiln car quality and wet base quality are pressed 1:2 and are calculated
2.2×0.878×50=96.6kj
3, air brings sensible heat into: (quality ×+specific heat × temperature)
Dry body quality is 4.38 × (1-0.14)=3.77kg
Be 5m by 1kg siccative required air quantity
3.
Required air quantity is 3.77 × 5=18.8m
3.
Air specific weight is 1.29kg/m
3
Air quality is 14.6kg.
Air sensible is 14.6 × 1.3 × 30=569.4kj.
4, chemical heat brought into by fuel
4.38×（1-0.14）×500×4.186=7883kj.
Total heat income 155+96.6+569.4+7884=8748kj.
four, heat expenditure
In mud brickmaking tunnel cave system, heat income is mainly
1, product takes sensible heat out of
Be 3820kj. as calculated
2, sensible heat taken out of by kiln car:
1750kj is calculated as by total amount of heat 20%
3, adobe heat of burning reaction: 1339kj
4, other heat wastes: calculate 875kj by total amount of heat 10%
5, flue gas takes sensible heat out of: Xkj
Total heat expenditure is 3820+1750+1339+875+X=7784+Xkj
five, according to the value of heat Balance Calculation X
7784+X=8748
X=964kj。
six, conclusion
Because the heat needed for dry wet base is 1133kj, and flue gas to take sensible heat out of be 964kj, therefore sensible heat that flue gas is with is not enough to dry wet base, must from salband additional heat.Drying sewage sludge does not then need from preheating zone heat extraction.
Claims (3)
1. utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, include calcining kiln temperature descending section waste heat (1), wet sludge storage bin (2), dredging tube (3), sludge drier (4), cyclone dust collectors (5), air-introduced machine (6), desulfurizing tower (7), conveying worm (8), dewatered sludge feed bin (9), admission line (10), desulfurizing tower wind pipe (11) is entered in mummification workshop, dry kiln enters desulfurizing tower wind pipe (12), dry kiln (13), take out the secondary airduct (14) of waste heat and take out waste heat air main (15), wet mud is transported to wet sludge storage bin (2) through gathering, it is characterized in that arranging dredging tube (3) from wet sludge storage bin (2) is connected to sludge drier (4), there is calcining kiln temperature descending section waste heat (1) to draw through admission line (10) simultaneously and deliver to sludge drier (4).
2. according to claim 1ly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, it is characterized in that the middle position above of calcining kiln, be provided with and take out waste heat air main (15), the both sides above of calcining kiln are provided with takes out the secondary airduct (14) of waste heat, take out the secondary airduct (14) of waste heat and take out waste heat air main (15) and be aggregated into admission line (10), sludge drier (4) is connected to by admission line (10), sludge drier (4) is connected to cyclone dust collectors (5) and conveying worm (8) simultaneously, conveying worm (8) is connected to dewatered sludge feed bin (9), cyclone dust collectors (5) are then connected to air-introduced machine (6), air-introduced machine (6) is connected to again desulfurizing tower (7).
3. according to claim 1ly utilize fired brick production line residual heat of tunnel kiln dewatered sludge brickmaking technology, it is characterized in that calcining kiln and dry kiln are set up in parallel, the heat of calcining kiln temperature descending section waste heat (1) is connected to sludge drier (4) through admission line (10), at the wet mud that wet sludge storage bin (2) gathers, also connect through dredging tube (3) and be transported to sludge drier (4), sludge drier (4) is connected with conveying worm (8), sludge drier (4) is connected with cyclone dust collectors (5) by pipeline again, cyclone dust collectors (5) are connected with air-introduced machine (6), conveying worm (8) is connected to dewatered sludge feed bin (9), air-introduced machine (6) then enters desulfurizing tower wind pipe (11) by mummification workshop and is connected to desulfurizing tower (7), dry kiln (12) then enters desulfurizing tower wind pipe (12) by dry kiln and is connected to desulfurizing tower (7).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538491A (en) * | 2015-12-11 | 2016-05-04 | 李谟清 | Full-automatic cement brick curing system and curing technological process |
| CN107417068A (en) * | 2017-08-30 | 2017-12-01 | 杭州博雷环保科技有限公司 | A kind of new sludge treatment technique |
| CN109052902A (en) * | 2018-09-06 | 2018-12-21 | 西安墙体材料研究设计院有限公司 | A method of utilizing residual heat of tunnel kiln dewatered sludge |
| CN109574451A (en) * | 2018-11-30 | 2019-04-05 | 佛山丰汇环保工程有限公司 | A kind of method of sludge drying comprehensive utilization |
| CN111499348A (en) * | 2020-04-17 | 2020-08-07 | 余姚市恒祥新型建材有限公司 | Production process of sintered brick |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198201A (en) * | 1977-06-10 | 1980-04-15 | Rohrbach Technologie, Kommanditgesellschaft Baustofftechnik GmbH & Co. | Method of and apparatus for operating industrial furnace systems |
| DE4435166C1 (en) * | 1994-09-30 | 1996-05-23 | Justus Goetz Volker Dr Ing | Assembly to vitrify contaminated waste |
| CN201206835Y (en) * | 2008-04-03 | 2009-03-11 | 浙江大学 | Sludge treatment system utilizing pulverized coal boiler of power station |
| CN101870549A (en) * | 2009-04-27 | 2010-10-27 | 上海环保工程成套有限公司 | Circulation coupling process for drying mud by waste heat of cement kiln tail gas |
| CN102381877A (en) * | 2011-05-16 | 2012-03-21 | 南京鑫翔新型建筑材料有限责任公司 | Method for brickmaking by comprehensive utilization of desiccated sludge |
| CN102778126A (en) * | 2012-07-27 | 2012-11-14 | 山东恒祥机械有限公司 | One-time palletizing-burning tunnel kiln |
| CN103588372A (en) * | 2013-11-12 | 2014-02-19 | 四川国立能源科技有限公司 | Recycling processing method and processing device thereof for civil sludge |
| CN103925788A (en) * | 2014-04-18 | 2014-07-16 | 郭金良 | Circulating adjustable ventilation system of large-section tunnel kiln of sintered brick production line |
-
2014
- 2014-11-15 CN CN201410646331.2A patent/CN104315844A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198201A (en) * | 1977-06-10 | 1980-04-15 | Rohrbach Technologie, Kommanditgesellschaft Baustofftechnik GmbH & Co. | Method of and apparatus for operating industrial furnace systems |
| DE4435166C1 (en) * | 1994-09-30 | 1996-05-23 | Justus Goetz Volker Dr Ing | Assembly to vitrify contaminated waste |
| CN201206835Y (en) * | 2008-04-03 | 2009-03-11 | 浙江大学 | Sludge treatment system utilizing pulverized coal boiler of power station |
| CN101870549A (en) * | 2009-04-27 | 2010-10-27 | 上海环保工程成套有限公司 | Circulation coupling process for drying mud by waste heat of cement kiln tail gas |
| CN102381877A (en) * | 2011-05-16 | 2012-03-21 | 南京鑫翔新型建筑材料有限责任公司 | Method for brickmaking by comprehensive utilization of desiccated sludge |
| CN102778126A (en) * | 2012-07-27 | 2012-11-14 | 山东恒祥机械有限公司 | One-time palletizing-burning tunnel kiln |
| CN103588372A (en) * | 2013-11-12 | 2014-02-19 | 四川国立能源科技有限公司 | Recycling processing method and processing device thereof for civil sludge |
| CN103925788A (en) * | 2014-04-18 | 2014-07-16 | 郭金良 | Circulating adjustable ventilation system of large-section tunnel kiln of sintered brick production line |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538491A (en) * | 2015-12-11 | 2016-05-04 | 李谟清 | Full-automatic cement brick curing system and curing technological process |
| CN107417068A (en) * | 2017-08-30 | 2017-12-01 | 杭州博雷环保科技有限公司 | A kind of new sludge treatment technique |
| CN109052902A (en) * | 2018-09-06 | 2018-12-21 | 西安墙体材料研究设计院有限公司 | A method of utilizing residual heat of tunnel kiln dewatered sludge |
| CN109574451A (en) * | 2018-11-30 | 2019-04-05 | 佛山丰汇环保工程有限公司 | A kind of method of sludge drying comprehensive utilization |
| CN111499348A (en) * | 2020-04-17 | 2020-08-07 | 余姚市恒祥新型建材有限公司 | Production process of sintered brick |
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Application publication date: 20150128 |