CN103759268B - A kind of rubbish drying system and furnace drying method thereof - Google Patents

A kind of rubbish drying system and furnace drying method thereof Download PDF

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Publication number
CN103759268B
CN103759268B CN201410028480.2A CN201410028480A CN103759268B CN 103759268 B CN103759268 B CN 103759268B CN 201410028480 A CN201410028480 A CN 201410028480A CN 103759268 B CN103759268 B CN 103759268B
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China
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drying
rubbish
screening drum
warm
silt
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CN201410028480.2A
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Chinese (zh)
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CN103759268A (en
Inventor
吴谦信
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福建沃丰达环保科技有限公司
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Abstract

The present invention proposes a kind of rubbish drying system, solves the low burning disposal of composting calorific value in prior art and can not reach spontaneous combustion, it is necessary to add the defect that auxiliary fuel is combustion-supporting.It includes drying screening drum, support roller, support and hot-air blower;Dry screening drum and hot-air blower is installed on support;Hot-air blower is respectively arranged at two ends with suction warm-air pipe and is blown into warm-air pipe, sucks warm-air pipe and is provided with boiler flue gas outlet pipe insertion end, is blown into warm-air pipe and connects with drying screening drum;Drying screening drum to be supported by support roller, and be provided with lifting blade, silt screening plant in drying screening drum, cross hopper and guide groove, lifting blade is set on the inwall drying screening drum;Silt screening plant one end connects with crossing hopper, and its other end connects with guide groove.Rubbish drying system simple in construction of the present invention, it need not add auxiliary fuel, and not only rubbish can spontaneous combustion continually and steadily, moreover it is possible to reduce smoke discharge amount, for continual and steady qualified discharge offer technology ripe, reliable and technique.

Description

A kind of rubbish drying system and furnace drying method thereof

Technical field

The present invention relates to burning city domestic garbage processing technology field, particularly to a kind of rubbish drying system improving refuse thermal value and furnace drying method thereof.

Background technology

Incineration treatment of garbage have innoxious thoroughly, minimizing is notable, resource recycling recycling and stabilisation advantage quick, permanent, it has also become being substantially oriented of garbage disposal.But garbage disposal is still that a global problem, because modernization waste incineration belongs to high energy consumption high cost technology, it may be said that the mankind, until the most not yet system grasps waste incineration core technology-burning, all lack reliable technical support in building and running.

Have the various garbage burning disposal type of furnace, most widely used grate furnace at present, there is stove treating capacity with a long history, single maximum, the advantage that market share amount is maximum.It is its moisture content≤20% of adaptation of developed country's designer design, containing ash≤5%, categorized calorific value >=6000kJ/kg, is conducive to the specific type of furnace burnt away the refuse.And China and the developing countries are compostings, moisture content 40%-60%, containing ash 15%-25%, calorific value is typically at 3500kJ/kg-5000kJ/kg, need to add substantial amounts of auxiliary fuel (process one ton of rubbish and add the coal of about 250kg), stable burning could be maintained, whether the grate furnace of package import or the type of furnace of other technologies, commonly used this consumption-type scheme.But, whether developed country or the revolving burner of China, is all by single furnace type structure, the type of furnace that dryer section and incineration section are integrated, and causes furnace temperature fluctuation big, also to add substantial amounts of auxiliary fuel, could maintain stable burning and fully burning.

Waste incineration is divided into being dried, thermally decomposes, burns and 4 stages of after-flame.Owing to the refuse thermal value of China is low, it is impossible to reach the requirement of spontaneous combustion, need to by quantity of refuse put into >=25% coal combustion-supporting.Using consumption-type scheme at burning process, run counter to the fundamental state policy of Resources for construction economizing type, incineration treatment of garbage must take into full account its economy and the impact on environment, it is therefore necessary to explores low energy consumption, high efficiency and the economize on resources new technique of input, new technology.

Summary of the invention

The present invention proposes a kind of rubbish drying system and furnace drying method thereof, solves the low burning disposal of composting calorific value in prior art and can not reach spontaneous combustion, it is necessary to add the defect that auxiliary fuel is combustion-supporting.Rubbish drying system simple in construction of the present invention, easy to operate, it need not add auxiliary fuel, and not only rubbish can spontaneous combustion continually and steadily, moreover it is possible to reduces smoke discharge amount, for continual and steady qualified discharge offer technology ripe, reliable and technique.

A kind of rubbish drying system, it includes drying screening drum, support roller, support and hot-air blower;Described drying screening drum and described hot-air blower are respectively mounted on the bracket;Described hot-air blower is respectively arranged at two ends with suction warm-air pipe and be blown into warm-air pipe, and described suction warm-air pipe is provided with boiler flue gas outlet pipe and inserts end, described in be blown into warm-air pipe and connect with described drying screening drum;Described drying screening drum is supported by described support roller, and is provided with lifting blade, silt screening plant in described drying screening drum, crosses hopper and guide groove, and described lifting blade is set on the inwall of described drying screening drum;Described silt screening plant one end connects with described hopper of crossing, and its other end connects with described guide groove.

Further, the furnace drying method of rubbish drying system comprises the steps: that suction warm-air pipe is inserted end by boiler flue gas outlet pipe and is connected to boiler flue gas outlet pipe by (1), and suction warm-air pipe is inserted in boiler flue gas outlet pipe, and starts hot-air blower and start working;(2) by hot-air blower, the fume afterheat in boiler flue gas outlet pipe is sucked through sucking warm-air pipe, and fume afterheat is blown on the inwall drying screening drum through being blown into warm-air pipe;(3) drying screening drum to rotate, dry the rubbish in screening drum and rotate with drying screening drum on lifting blade, the axle center being promoted to dry screening drum above the horizon scatters, and mutually collides with heat smoke;(4) rubbish absorbs fume afterheat in screening drum drying, and evaporates precipitation moisture, makes rubbish constantly heat up, is dried and has peeled off the silt being attached on rubbish, rubbish and silt and constantly rotate propelling because of dry screening drum, arrives silt screening plant;(5) silt and rubbish are separated by silt screening plant, and silt is discharged through guide groove;Rubbish passed through hopper and entered into incinerator.

The present invention uses the heating source that fume afterheat is dried as rubbish, peel off at drying course and be attached to the ash (mud, sand) of rubbish, make rubbish become dry and loose combustibles, for burning the garbage fuel providing homogeneous, need not add auxiliary fuel, rubbish can be with spontaneous combustion.Both save substantial amounts of auxiliary fuel (coal), reduced again smoke discharge amount, it is achieved incineration treatment of garbage energy-saving and emission-reduction, reach the good result that environmental protection and economy coexists.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of rubbish drying system of the present invention;

Fig. 2 is the structural representation of rubbish another angle of drying system of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

With reference to Fig. 1 and Fig. 2, a kind of rubbish drying system 1, it includes drying screening drum 2, support roller 3, support 4 and hot-air blower 5;Described drying screening drum 2 and described hot-air blower 5 are installed on described support 4;Described hot-air blower 5 is respectively arranged at two ends with suction warm-air pipe 51 and is blown into warm-air pipe 52, and described suction warm-air pipe 51 is provided with boiler flue gas outlet pipe and inserts end (not shown), described in be blown into warm-air pipe 52 and connect with described drying screening drum 2;Described drying screening drum 2 is supported by described support roller 3, and is provided with lifting blade 21, silt screening plant 22 in described drying screening drum 2, crosses hopper 23 and guide groove 24, and described lifting blade is set on the inwall of described drying screening drum;Described silt screening plant one end connects with described hopper of crossing, and its other end connects with described guide groove.Boiler flue gas outlet pipe of the present invention inserts the setting of end, is inserted in boiler flue gas outlet pipe for suction warm-air pipe is inserted end by boiler flue gas outlet pipe, thus the fume afterheat in boiler flue gas outlet pipe is sucked into drying screening drum.

The present invention connects with boiler flue gas outlet pipe by sucking warm-air pipe, utilize the clean-burning fume afterheat of boiler flue gas outlet Guan Zhongyi, the heating source dried as rubbish, single rubbish Lower heat value is improved to >=6000kJ/kg by 3500kJ/kg-5000kJ/kg, rubbish is warming up to 110 DEG C-200 DEG C, become dry and loose combustibles, provide homogeneous fuel for rubbish continued stable combustion, fully burning;Except startup stage in addition to need not add the raw material such as coal, oil, gas, bavin combustion-supporting, the continual and steady spontaneous combustion of garbage energy, energy consumption is greatly lowered;Furthermore with fume afterheat as the heating source dried, reduce fume emission total amount 30%-45%, it is ensured that the continual and steady qualified discharge of flue gas pollutant, fume emission is greatly reduced.

The furnace drying method of rubbish drying system comprises the steps: that suction warm-air pipe is inserted end by boiler flue gas outlet pipe and is connected to boiler flue gas outlet pipe by (1), and is inserted in boiler flue gas outlet pipe by suction warm-air pipe, and starts hot-air blower and start working;(2) by hot-air blower, the fume afterheat in boiler flue gas outlet pipe is sucked through sucking warm-air pipe, and fume afterheat is blown on the inwall drying screening drum through being blown into warm-air pipe;(3) drying screening drum to rotate, dry the rubbish in screening drum and rotate with drying screening drum on lifting blade, the axle center being promoted to dry screening drum above the horizon scatters, and mutually collides with heat smoke;(4) rubbish absorbs fume afterheat in screening drum drying, and evaporates precipitation moisture, makes rubbish constantly heat up, is dried and has peeled off the silt being attached on rubbish, rubbish and silt and constantly rotate propelling because of dry screening drum, arrives silt screening plant;(5) silt and rubbish are separated by silt screening plant, and silt is discharged through guide groove;Rubbish passed through hopper and entered into incinerator.

The present invention is in use, hot-air blower retains the fume afterheat (260 DEG C ± 10 DEG C) (interception is the 30%-45% of amount of flue gas emission) in (suction) boiler flue gas outlet pipe, it is blown into drying screening drum inwall, fume afterheat is made to become Snake Curve in drying screening drum, the rubbish collision constantly scattered with lifting blade in rotation cylinder advances, the evaporation of rubbish draw heat separates out moisture and peels off ash, drying and preheating to 110 DEG C-200 DEG C, part rubbish decomposes becomes fuel gas and Residual Carbides, such as plastics, rubber, paper and Plant fiber etc., but because of anoxia with there is no the typically no burning of naked light;When entering high-temperature incinerator, after oxygen supply, rubbish catches fire oxidizing fire immediately, and the steam that rubbish evaporation separates out carries out water gas reaction with carbide, generates the fuel gas that calorific value is the highest: H2、CO、CH4And Residual Carbides etc., provide uniform quality, stable in properties and the fuel of calorific value >=6000kJ/kg for incinerator, it is to avoid incinerator ignition temperature fluctuates, for guaranteeing that rubbish fully burns and continual and steady qualified discharge, has established reliable material base.The chemical equation of burning is: C+H2O→CO+H2;C+2H2→CH4.The steam that in incinerator, burning produces is sent to dry screening drum by boiler flue gas outlet pipe, and incinerator provides heating source for drying screening drum, dries screening drum and provides the fuel of high heating value for incinerator, and being formed complements each other recycles.

Its gross mass of rubbish that the present invention sieves after drying and drying reduces more than 60%, and rubbish moisture content is by 50%(±) reduce to < 10%(±), Mass lost 40%(±);Containing ash by 25%(±) reduce to < 2%(±);Lower heat value reaches >=6000kJ/kg, all ensures that the continual and steady spontaneous combustion of rubbish in any season.

Rubbish drying system of the present invention and furnace drying method thereof can effectively reduce energy consumption more than 30%, cut down pollutant emission more than 30%, improve treatment effeciency more than 30%, reduce operating cost more than 30%, realize incineration treatment of garbage reduce discharging put, low energy consumption, low cost and high efficiency, reach the excellent results that environmental protection and economy coexists.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (2)

1. a rubbish drying system, it is characterised in that it include dry screening drum, support roller, support and Hot-air blower;Described drying screening drum and described hot-air blower are respectively mounted on the bracket;
Described hot-air blower is respectively arranged at two ends with suction warm-air pipe and is blown into warm-air pipe, and described suction warm-air pipe is provided with Boiler flue gas outlet pipe inserts end, described in be blown into warm-air pipe and connect with described drying screening drum;
Described drying screening drum is supported by described support roller, and be provided with in described drying screening drum lifting blade, Silt screening plant, excessively hopper and guide groove, described lifting blade is set on the inwall of described drying screening drum; Described silt screening plant one end connects with described hopper of crossing, and its other end connects with described guide groove;
Hot-air blower retains the fume afterheat of 260 DEG C in boiler flue gas outlet pipe ± 10 DEG C, and interception is that flue gas is total The 30%-45% of amount, is blown into drying screening drum inwall, makes fume afterheat become to crawl in drying screening drum The rubbish collision that in curve, with rotation cylinder, lifting blade constantly scatters advances, and the evaporation of rubbish draw heat separates out Moisture and peel off ash, drying and preheating to 110 DEG C-200 DEG C, part rubbish decomposes becomes fuel gas and residual Stay carbide, but because of anoxia with there is no the typically no burning of naked light;When entering high-temperature incinerator, after oxygen supply Rubbish catches fire oxidizing fire immediately, and the steam that rubbish evaporation separates out carries out water gas reaction with carbide, Generate the fuel gas that calorific value is the highest: H2、CO、CH4And Residual Carbides, provide quality for incinerator Uniformly, stable in properties and the fuel of calorific value >=6000kJ/kg, it is to avoid incinerator ignition temperature fluctuates, for guaranteeing Rubbish fully burns and continual and steady qualified discharge, has established reliable material base;The chemical reaction of burning Formula is: C+H2O→CO+H2;C+2H2→CH4;The steam that in incinerator, burning produces passes through pot Kiln gas outlet is sent to dry screening drum, and incinerator provides heating source for drying screening drum, dries Screening drum provides the fuel of high heating value for incinerator, and being formed complements each other recycles.
2. the furnace drying method of rubbish drying system as claimed in claim 1, it is characterised in that it include as Lower step:
(1) suction warm-air pipe is inserted end by boiler flue gas outlet pipe and be connected to boiler flue gas outlet pipe, and Suction warm-air pipe is inserted in boiler flue gas outlet pipe, and starts hot-air blower and start working;
(2) by hot-air blower, the fume afterheat in boiler flue gas outlet pipe is sucked through sucking warm-air pipe, and warp It is blown into warm-air pipe to be blown into by fume afterheat on the inwall drying screening drum;
(3) dry screening drum to rotate, dry the rubbish in screening drum on lifting blade with drying screening rolling Cylinder rotates together, and the axle center being promoted to dry screening drum above the horizon scatters, and mutually touches with heat smoke Hit;
(4) rubbish absorbs fume afterheat in drying screening drum, and evaporates precipitation moisture, makes rubbish continuous Heat up, be dried and peeled off the silt being attached on rubbish, rubbish and silt because drying the continuous of screening drum Rotate and advance, arrive silt screening plant;
(5) silt and rubbish are separated by silt screening plant, and silt is discharged through guide groove;Rubbish is through punishment in advance Bucket enters into incinerator.
CN201410028480.2A 2014-01-21 2014-01-21 A kind of rubbish drying system and furnace drying method thereof CN103759268B (en)

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Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
CN105268626A (en) * 2014-07-24 2016-01-27 甘肃渊和中药材生物科技发展有限公司 Traditional Chinese medicine screening and drying all-in-one machine
CN104792124B (en) * 2015-04-03 2018-05-25 金华市卡德姆昌德自动化设备有限公司 A kind of fertiliser granulates drying device of low vibrations
CN104713333B (en) * 2015-04-03 2016-11-30 林彩凤 A kind of fertiliser granulates drying device using blow device
CN104858221B (en) * 2015-06-12 2017-01-18 山东省科学院新材料研究所 System for efficiently sorting garbage after treatment
CN110006045A (en) * 2019-03-08 2019-07-12 广州清风环保科技有限公司 A kind of solid waste minimizing incineration pretreatment device
CN111054616A (en) * 2019-12-09 2020-04-24 保定市方正机械厂 Waste heat garbage drying and sorting process

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CN1237686A (en) * 1998-05-28 1999-12-08 毛首魁 Integrated treatment system for city domestic refuse
CN1603686A (en) * 2003-09-30 2005-04-06 周如和 Fully enclosed negative pressure refuse picking and burning process
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CN102563659A (en) * 2012-03-02 2012-07-11 唐伟民 Refuse incineration power generation process and refuse incineration power generation equipment
CN202938308U (en) * 2012-11-02 2013-05-15 武汉德合顺环境科技有限公司 Domestic waste incineration pretreatment drying system

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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN1237686A (en) * 1998-05-28 1999-12-08 毛首魁 Integrated treatment system for city domestic refuse
CN1603686A (en) * 2003-09-30 2005-04-06 周如和 Fully enclosed negative pressure refuse picking and burning process
CN201277557Y (en) * 2008-09-28 2009-07-22 浙江汉洁能源环保工程有限公司 Thermal decomposition apparatus for organic waste
CN102563659A (en) * 2012-03-02 2012-07-11 唐伟民 Refuse incineration power generation process and refuse incineration power generation equipment
CN202938308U (en) * 2012-11-02 2013-05-15 武汉德合顺环境科技有限公司 Domestic waste incineration pretreatment drying system

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