CN102721046A - Circulating fluidized bed boiler for combustion papermaking waste residue and sludge - Google Patents

Circulating fluidized bed boiler for combustion papermaking waste residue and sludge Download PDF

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Publication number
CN102721046A
CN102721046A CN2012102329940A CN201210232994A CN102721046A CN 102721046 A CN102721046 A CN 102721046A CN 2012102329940 A CN2012102329940 A CN 2012102329940A CN 201210232994 A CN201210232994 A CN 201210232994A CN 102721046 A CN102721046 A CN 102721046A
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Prior art keywords
flue
burner hearth
temperature superheater
low temperature
drum
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CN2012102329940A
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CN102721046B (en
Inventor
林敏�
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Wuxi Huaguang Environmental Protection Energy Group Co., Ltd
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Wuxi Huaguang Boiler Co Ltd
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Abstract

The invention provides a circulating fluidized bed boiler for combustion papermaking waste residue and sludge. The circulating fluidized bed boiler returns materials smoothly and is enough in output and insusceptible to high temperature corrosion of a high temperature superheater and a low temperature superheater and low temperature corrosion of an air preheater, and the superheaters and a coal economizer cannot accumulate dust easily. The technical scheme is that the circulating fluidized bed boiler comprises a boiling drum, a hearth, the low temperature superheater, the coal economizer, the air preheater, a feeding device and an ignition device under a bed. The ignition device under the bed and a deslagging pipe are arranged at the bottom of the hearth, the feeding device is located on the half lower portion of the hearth, the boiling drum is supported at the top of the hearth, the hearth is communicated with a flue, and the low temperature superheater, the coal economizer and the air preheater are arranged in the flue. The circulating fluidized bed boiler is characterized in that inlets of a high temperature thermal insulation volute cyclone separator are bilaterally symmetrically connected to an outlet of a rear wall of the upper portion of the hearth, and an outlet positioned at the top of the high temperature thermal insulation volute cyclone separator is connected with the flue.

Description

Use the CFBB of waste sludge from paper mill and mud
Technical field
The present invention relates to the technical field of CFBB, be specially the CFBB that uses waste sludge from paper mill and mud.
Background technology
China's paper industry is an industry that damage ratio is more serious, and a large amount of waste residues and the mud that produce in the production process are sorted out the waste plastics rubbish that comes from the paper mill and all do not carried out the processing of science, and heap is being abandoned everywhere.Waste plastics can not be degraded at nature for a long time, can cause the serious environmental pollution hidden trouble, and the burning everywhere that has gives out unpleasant poisonous foul gas, severe contamination air, not only ecology is damaged, also threatening local people's physical and mental health.
Paper mill sludge is the end product that emits after waste water of paper mill is handled, and mainly is made up of short fiber matter and most of moisture, also contains pathogenic bacteria, parasite and the heavy metal etc. of some harmful human healths.
Make full use of waste sludge from paper mill and sludge incineration generating, have energy savings, antipollution social benefit, also have good economic benefits.
The at present domestic CFBB ubiquity returning charge that uses this type of material is smooth, dust stratification, the air preheater cold end corrosion of high temperature corrosion, low temperature superheater and the economizer of undercapacity and high and low temperature superheater.
Summary of the invention
To the problems referred to above; The invention provides the CFBB that uses waste sludge from paper mill and mud; Smooth and easy, the foot of exerting oneself of its returning charge is not vulnerable to high temperature corrosion, the air preheater cold end corrosion of high temperature superheater, low temperature superheater, and superheater and economizer are difficult for dust stratification.
Use the CFBB of waste sludge from paper mill and mud; Its technical scheme is such: it comprises drum, burner hearth, low temperature superheater, economizer, air preheater, feed arrangement, ignition under bed device; The bottom of said burner hearth is provided with said ignition under bed device, residue outlet; Said feed arrangement is positioned at the middle and lower part of said burner hearth, and the top-supported of said burner hearth has said drum, and said burner hearth is communicated with flue; Be provided with low temperature superheater, economizer, air preheater in the said flue; It is characterized in that: the wall outlet is symmetrically arranged and is connected with the import of high-temperature heat insulation spiral case cyclone separator behind the top of said burner hearth, and the top exit of said high-temperature heat insulation spiral case cyclone separator is connected with said flue, and the bottom of said high-temperature heat insulation spiral case cyclone separator is communicated with the returning charge case; Be provided with the external high temperature superheater in the said returning charge case, the bottom of said burner hearth is led in the bottom of said returning charge case; Said flue be specially two vertically to flue; Be respectively flue I, flue II; Said flue I is communicated with the top exit of said high-temperature heat insulation spiral case cyclone separator, is furnished with W type evaporating heating surface, low temperature superheater, economizer in the said flue I successively downwards, and said low temperature superheater, economizer adopt light pipe to arrange along row; The top of said low temperature superheater is provided with direct-contact desuperheater; The upper end of said flue II is furnished with said air preheater, and said air preheater adopts horizontal pipe alignment row to arrange that the bottom of said flue I is through connecting the bottom that pipeline is communicated with said flue II.
It is further characterized in that: said feed arrangement specifically comprises paper slag batcher, feeder, biogas fuel gas inlet, quartz sand charging aperture; The paper mill sludge charging aperture is positioned at the top of burner hearth; Said drum connects the membrane wall of said burner hearth and the water inlet of said W type evaporating heating surface respectively through down-comer; The delivery port of the membrane wall of said burner hearth, W type evaporating heating surface connects said drum through pipeline respectively; The saturated vapor of said drum connects the import of said low temperature superheater through tube connector; The outlet of said low temperature superheater connects said direct-contact desuperheater, external high temperature superheater in order, and the outlet of said external high temperature superheater is connected to main-steam outlet collection case;
The bottom of said burner hearth is provided with wind, air distribution plate, and said burner hearth front-back wall water-cooling wall is provided with secondary wind;
Low high air distribution plate all around in the middle of said air distribution plate is specially.
After adopting structure of the present invention, the external high temperature superheater places in the material-returning device of separator, has avoided the high temperature corrosion of heating surface; Adopt W type evaporating heating surface, effectively reduce the flue-gas temperature that gets into low temperature superheater, avoided the high temperature corrosion of low temperature superheater heating surface; Afterbody adopts two flues, and superheater, economizer adopt light pipe along row, avoids afterbody slagging scorification, dust stratification to stop up flue; Air preheater adopts horizontal pipe alignment row to arrange, has avoided the cold end corrosion of heating surface, and has been convenient to deashing; And, guarantee that returning charge is smooth and easy, the foot of exerting oneself through the returning charge of returning charge groove; To sum up, smooth and easy, the foot of exerting oneself of its returning charge is not vulnerable to high temperature corrosion, the air preheater cold end corrosion of high temperature superheater, low temperature superheater, and superheater and economizer are difficult for dust stratification.
Description of drawings
Fig. 1 is a front view structural representation of the present invention.
The specific embodiment
See Fig. 1; It comprises drum 1, burner hearth 2, low temperature superheater 3, economizer 4, air preheater 5, feed arrangement, ignition under bed device 6, and the bottom of burner hearth 2 is provided with ignition under bed device 6, residue outlet 7, and feed arrangement is positioned at the middle and lower part of burner hearth 2; The top-supported of burner hearth 2 has drum 1; Burner hearth is communicated with flue, is provided with low temperature superheater 3, economizer 4, air preheater 5 in the flue, and the upper side outlet of burner hearth 2 is connected with the upper side import of high-temperature heat insulation spiral case cyclone separator 8; The top exit of high-temperature heat insulation spiral case cyclone separator 8 is connected with flue; The bottom of high-temperature heat insulation spiral case cyclone separator 8 is communicated with returning charge case 9, is provided with external high temperature superheater 10 in the returning charge case 9, and the bottom of burner hearth 2 is led in the bottom of returning charge case 9; Flue be specially two vertically to flue; Be respectively flue I11, flue II 12; Flue I11 is communicated with the top exit of high-temperature heat insulation spiral case cyclone separator 8, is furnished with W type evaporating heating surface 13, low temperature superheater 3, economizer 4 in the flue I11 successively downwards, and low temperature superheater 3, economizer 4 adopt light pipe to arrange along row; The top of low temperature superheater 3 is provided with direct-contact desuperheater 22; The upper end of flue II 12 is furnished with air preheater 5, and air preheater 5 adopts horizontal pipe alignment row to arrange, the bottom of flue I11 is through connecting the bottom that pipeline 14 is communicated with flue II 12.
Feed arrangement specifically comprises paper slag batcher 15, feeder 16, biogas fuel gas inlet 17, quartz sand charging aperture 18; Paper mill sludge charging aperture 23 is positioned at the top of burner hearth 2; Drum 1 connects the membrane wall of burner hearth 2 and the water inlet of W type evaporating heating surface 13 respectively through down-comer 24; The delivery port of the membrane wall of burner hearth 2, W type evaporating heating surface 13 connects drum 1 through pipeline respectively; The saturated vapor of drum 1 connects the import of low temperature superheater 3 through tube connector; The outlet of low temperature superheater 3 connects direct-contact desuperheater 22, external high temperature superheater 10 in order, and the outlet of external high temperature superheater 10 is connected to main-steam outlet collection case 25.
The bottom of burner hearth 2 is provided with wind 19, air distribution plate 20, and burner hearth 2 front-back wall water-cooling walls are provided with secondary wind 21;
Low high air distribution plate all around in the middle of air distribution plate 20 is specially.,
Its operation principle is following:
Receive to get into drum 1 after the flue gas heating; Stove water in the drum 1 gets into the membrane wall and the W type evaporating heating surface 13 of burner hearth 2 respectively through down-comer 24; The stove water become steam water interface after by flue gas heating and get into drum 1 in the membrane wall of burner hearth 2 and the W type evaporating heating surface 13; In drum 1, by water separator steam water interface is divided into saturated vapor and saturated stove water, stove water gets into down-comer 24; Saturated vapor is introduced low temperature superheater 3 by tube connector, gets into the superheated steam that direct-contact desuperheater 22, external high temperature superheater 10 reach the boiler nominal parameter then successively and introduces main-steam outlet collection case 25 output boilers by tube connector, gets into steam turbine work done generating.
Boiler oil gets into 2 fens several parts of burner hearth; Send into the emulsion zone of burner hearth 2 bottoms through broken waster paper slag by paper slag batcher 15, mud gets into through the paper mill sludge charging aperture 23 at the top of burner hearth 2, and coal feeds the feeder 16 that is arranged in below the batcher and gets into burner hearths 2; Biogas gets into burner hearth 2 through the biogas fuel gas inlet 17 that is arranged in the burner hearth both sides; This external both walls also is furnished with quartz sand charging aperture 18 and replenishes the bed material, and after various fuel got into burner hearth, fuel and air be blending burning under the fluidized state in burner hearth; And carry out heat exchange with heating surface burner hearth 2; The heat release of further burning on burner hearth 2 tops of flue gases (carrying a large amount of uncompleted burned carbon particles) in the burner hearth 2, the flue gas that leaves burner hearth 2 and carry a large amount of materials secretly is after high-temperature heat insulation spiral case cyclone separator 8, and most materials are separated; Behind material returning device 9 heating high temperature superheaters 10, return burner hearth, realize circulating combustion; Flue gas after the separation is through reversal chamber, W type evaporating heating surface 13, low temperature superheater 3, economizer 4, air preheater 5, and cooling back flue gas is discharged boiler, is discharged by chimney through the flue gas that meets national discharge index after the processing such as dedusting, desulfurization.
Slag after the fuel combustion is discharged boiler by residue outlet 7.

Claims (4)

1. use the CFBB of waste sludge from paper mill and mud; It comprises drum, burner hearth, low temperature superheater, economizer, air preheater, feed arrangement, ignition under bed device; The bottom of said burner hearth is provided with said ignition under bed device, residue outlet; Said feed arrangement is positioned at the middle and lower part of said burner hearth, and the top-supported of said burner hearth has said drum, and said burner hearth is communicated with flue; Be provided with low temperature superheater, economizer, air preheater in the said flue; It is characterized in that: the wall outlet is symmetrically arranged and is connected with the import of high-temperature heat insulation spiral case cyclone separator behind the top of said burner hearth, and the top exit of said high-temperature heat insulation spiral case cyclone separator is connected with said flue, and the bottom of said high-temperature heat insulation spiral case cyclone separator is communicated with the returning charge case; Be provided with the external high temperature superheater in the said returning charge case, the bottom of said burner hearth is led in the bottom of said returning charge case; Said flue be specially two vertically to flue; Be respectively flue I, flue II; Said flue I is communicated with the top exit of said high-temperature heat insulation spiral case cyclone separator, is furnished with W type evaporating heating surface, low temperature superheater, economizer in the said flue I successively downwards, and said low temperature superheater, economizer adopt light pipe to arrange along row; The top of said low temperature superheater is provided with direct-contact desuperheater; The upper end of said flue II is furnished with said air preheater, and said air preheater adopts horizontal pipe alignment row to arrange that the bottom of said flue I is through connecting the bottom that pipeline is communicated with said flue II.
2. the CFBB that uses waste sludge from paper mill and mud according to claim 1 is characterized in that: said feed arrangement specifically comprises paper slag batcher, feeder, biogas fuel gas inlet, quartz sand charging aperture; The paper mill sludge charging aperture is positioned at the top of burner hearth; Said drum connects the membrane wall of said burner hearth and the water inlet of said W type evaporating heating surface respectively through down-comer; The delivery port of the membrane wall of said burner hearth, W type evaporating heating surface connects said drum through pipeline respectively; The saturated vapor of said drum connects the import of said low temperature superheater through tube connector; The outlet of said low temperature superheater connects said direct-contact desuperheater, external high temperature superheater in order, and the outlet of said external high temperature superheater is connected to main-steam outlet collection case.
3. the CFBB that uses waste sludge from paper mill and mud according to claim 1 and 2 is characterized in that: the bottom of said burner hearth is provided with wind, air distribution plate, and said burner hearth front-back wall water-cooling wall is provided with secondary wind.
4. the CFBB that uses waste sludge from paper mill and mud according to claim 3 is characterized in that: low high air distribution plate all around in the middle of said air distribution plate is specially.
CN201210232994.0A 2012-07-06 2012-07-06 Circulating fluidized bed boiler for combustion papermaking waste residue and sludge Active CN102721046B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103712206A (en) * 2013-12-20 2014-04-09 济南永泉节能环保科技有限公司 High-temperature smoke generating equipment
CN104456583A (en) * 2014-11-24 2015-03-25 南京工大环境科技有限公司 Chemical sludge incinerating technology and device
CN106122949A (en) * 2016-07-22 2016-11-16 福建省联盛纸业有限责任公司 A kind of circulating fluidized bed boiler of paper grade (stock)
CN106545833A (en) * 2016-10-28 2017-03-29 杭州红山热电有限公司 Boiler steam and water circuit
CN110285402A (en) * 2019-07-01 2019-09-27 自贡华西能源工业有限公司 Fire the CFB boiler of industrial solid castoff
CN111140842A (en) * 2018-11-06 2020-05-12 中国科学院工程热物理研究所 Back-mixing self-preheating combustion boiler system and pulverized coal self-preheating combustion method
CN111720810A (en) * 2020-06-24 2020-09-29 南通万达锅炉有限公司 Fluidized bed incinerator grading cooling module

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EP0851173A2 (en) * 1996-12-30 1998-07-01 Combustion Engineering, Inc. A method of controlling nitrous oxide in circulating fluidized bed steam generators
US20030202913A1 (en) * 2002-04-30 2003-10-30 Mikhail Maryamchik Compact footprint CFB with mechanical dust collector
CN102012097A (en) * 2010-04-28 2011-04-13 山东圣威新能源有限公司 Fluidized bed oil and water dual-medium circulation boiler
CN201811432U (en) * 2010-09-29 2011-04-27 河北艺能锅炉有限责任公司 Heat-conduction oil boiler of recirculating fluidized bed
CN102313282A (en) * 2011-03-14 2012-01-11 无锡华光锅炉股份有限公司 High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws
CN102418920A (en) * 2011-12-08 2012-04-18 山东省单县天元纸业有限公司 Circulating fluidized bed power generating boiler capable of blended combustion of industrial waste residues
CN202791996U (en) * 2012-07-06 2013-03-13 无锡华光锅炉股份有限公司 Circulating fluidized bed boiler for combusting papermaking waste dreg and sludge

Patent Citations (7)

* Cited by examiner, † Cited by third party
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EP0851173A2 (en) * 1996-12-30 1998-07-01 Combustion Engineering, Inc. A method of controlling nitrous oxide in circulating fluidized bed steam generators
US20030202913A1 (en) * 2002-04-30 2003-10-30 Mikhail Maryamchik Compact footprint CFB with mechanical dust collector
CN102012097A (en) * 2010-04-28 2011-04-13 山东圣威新能源有限公司 Fluidized bed oil and water dual-medium circulation boiler
CN201811432U (en) * 2010-09-29 2011-04-27 河北艺能锅炉有限责任公司 Heat-conduction oil boiler of recirculating fluidized bed
CN102313282A (en) * 2011-03-14 2012-01-11 无锡华光锅炉股份有限公司 High-temperature high-pressure recirculating fluidized bed boiler of combusting biomass straws
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103712206A (en) * 2013-12-20 2014-04-09 济南永泉节能环保科技有限公司 High-temperature smoke generating equipment
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CN104456583A (en) * 2014-11-24 2015-03-25 南京工大环境科技有限公司 Chemical sludge incinerating technology and device
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CN106122949A (en) * 2016-07-22 2016-11-16 福建省联盛纸业有限责任公司 A kind of circulating fluidized bed boiler of paper grade (stock)
CN106545833A (en) * 2016-10-28 2017-03-29 杭州红山热电有限公司 Boiler steam and water circuit
CN106545833B (en) * 2016-10-28 2018-07-17 杭州红山热电有限公司 Boiler steam and water circuit
CN111140842A (en) * 2018-11-06 2020-05-12 中国科学院工程热物理研究所 Back-mixing self-preheating combustion boiler system and pulverized coal self-preheating combustion method
CN110285402A (en) * 2019-07-01 2019-09-27 自贡华西能源工业有限公司 Fire the CFB boiler of industrial solid castoff
CN110285402B (en) * 2019-07-01 2020-10-09 自贡华西能源工业有限公司 CFB boiler burning industrial solid waste
CN111720810A (en) * 2020-06-24 2020-09-29 南通万达锅炉有限公司 Fluidized bed incinerator grading cooling module
CN111720810B (en) * 2020-06-24 2021-05-11 南通万达锅炉有限公司 Fluidized bed incinerator grading cooling module

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Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi

Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd

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Patentee before: WUXI HUAGUANG BOILER Co.,Ltd.

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