CN201310895Y - Municipal domestic refuse drying pretreatment device - Google Patents

Municipal domestic refuse drying pretreatment device Download PDF

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Publication number
CN201310895Y
CN201310895Y CNU2008202314681U CN200820231468U CN201310895Y CN 201310895 Y CN201310895 Y CN 201310895Y CN U2008202314681 U CNU2008202314681 U CN U2008202314681U CN 200820231468 U CN200820231468 U CN 200820231468U CN 201310895 Y CN201310895 Y CN 201310895Y
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CN
China
Prior art keywords
refuse
drying machine
rubbish
inlet
waste gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2008202314681U
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Chinese (zh)
Inventor
李国志
李鑫
刘晓峰
边贵顺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acre Coking and Refractory Engineering Consulting Corp MCC
Original Assignee
Acre Coking and Refractory Engineering Consulting Corp MCC
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Publication date
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Priority to CNU2008202314681U priority Critical patent/CN201310895Y/en
Application granted granted Critical
Publication of CN201310895Y publication Critical patent/CN201310895Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a municipal domestic refuse drying pretreatment device which belongs to municipal domestic refuse burning technology. The technical proposal is that a feeder arranged under a receiving hopper is connected with a refuse inlet of a drier, burned refuse is connected with a warm air delivery pipe arranged on the lower portion of the drier after passing through a high-temperature flue gas pipe led out by an exhaust blower, an exhaust pipe of the drier is connected with an inlet of an exhaust draught fan, an outlet of the exhaust draught fan is connected with an inlet of an exhaust purifying device, an outlet of the exhaust purifying device is communicated with a chimney; and a refuse conveyer is connected with a refuse outlet of the drier to a refuse pit. The advantages comprise thoroughly reutilizing heat energy, lowering moisture in refuse, increasing lower calorific value by 300 to 400 kcal/kg, reducing quantity of auxiliary fuels, and lowering running cost, because the municipal domestic refuse drying pretreatment device employs high-temperature flue gas caused during burning to dry domestic refuse.

Description

The dry pretreatment unit of domestic waste
Technical field
The utility model relates to the dry pretreatment unit of the domestic waste that is used for the burning city domestic garbage technology.
Background technology
Urban garbage disposal is the common issue that present countries in the world face.The harm of house refuse mainly shows as: the one, and communicate illness is detrimental to health, especially cholera bacteria, tulase and roundworm egg etc.; The 2nd, worsen environment, the harm environmental quality; The 3rd, destroy resource, the harm ecological balance, refuse pollution all has very serious harmfulness to water resource, subterranean resource, environmental resource and plant growth; The 4th, the rubbish explosion accident constantly takes place.The annual production of China's domestic waste is up to more than 1.7 hundred million tons, and every year is with about 10% speed increase; But the harmless treatment rate less than 1/3 of present China domestic waste, house refuse has become the significant problem of puzzlement economic development and environmental improvement.
At present, China's domestic waste method of disposal mainly contains sanitary landfills, During High-Temperature Composting, burning and recycling comprehensive treatment etc.Wherein topmost mode is a landfill, accounts for more than 70% of whole disposal amounts; It is less to burn shared ratio, and burning mainly concentrates on developed areas such as southeastern coast and provincial capital.Burning method is a kind of high-temperature heat treatment technology, its technical process is as solid fuel with domestic waste, drop in the special-purpose incinerator, under hot conditions, violent chemical reaction takes place in combustible component in the rubbish and airborne oxygen, emit heat, be converted into the solid-state slag of high-temperature combustion gas and stable in properties.The advantage of the method: one, subtract hold effective.But waste incineration decrement 80~90% can effectively solve the garbage-surrounded city phenomenon; Two, reduce land use area, solved the problem of the difficulty of city refuse landfill addressing effectively; Three, incineration temperature height, rubbish can be utterly destroyed the infective pathogen body through high temperature incineration more than 850 ℃ in special-purpose incinerator.
But because content of organics is not very high in present China domestic waste, low heat value is low (to be generally 700~1400kcal/kg), auxiliary fuel must be added and just normal combustion can be kept, the burning facility one-time investment is big, operating cost is high, needs very high garbage disposal subsidy just can keep normal burning operation.
In order to adapt to the low characteristics of the high and low position of China's refuse moisture content calorific capacity, improve the burning usefulness of incinerator, numerous equipment are given birth to manufacturers and R﹠D institution, have taked a lot of raisings to go into burn away the refuse low heat value and improve the method for incinerator combustion system of stove.In the improvement of incinerator, the general employing prolongs dryer section, increases the method for drying time; Secondly be exactly that the portion of hot flue gas behind the deduster is introduced the incinerator dryer section as drying medium, improve combustion position, improve ignition temperature; Be exactly to utilize waste heat boiler high-temperature steam heating combustion air once more, and then improve the combustion position of incinerator.
Though more than several combustion positions that improve incinerator and the method that improves the rubbish low heat valve obtained good effect, all have certain problem.The first, prolong the incinerator dryer section, increase drying time,, need absorb a large amount of heats in dryer section rubbish is carried out drying though rubbish improves at the burning zone combustion position, for the thermal balance of whole incinerator, final ignition temperature does not change; And this mode is only applicable to grate furnace, is not suitable for fluid bed; The second, the portion of hot flue gas behind the deduster is extracted out and is introduced the incinerator dryer section, but this mode only is that the waste gas of fraction is recycled, DeGrain, and be only applicable to grate furnace, be not suitable for fluid bed; Three, utilizing the waste heat boiler high-temperature steam to heat combustion air increases heat, improves incineration temperature, but with the consumption quantity of steam, and then the minimizing generated energy is a cost.
The utility model content
At the deficiencies in the prior art, the purpose of this utility model provides a kind of heat that reclaims in the existing CIU discharging flue gas, utilizes the consumer waste incineration discharged flue gas that domestic waste is carried out dry pretreatment unit fully.
For achieving the above object, the utility model is achieved through the following technical solutions:
The dry pretreatment unit of domestic waste, comprise hopper, batcher, drying machine, ash conveyor, garbage conveyor, the waste gas air-introduced machine, waste gas purification apparatus, chimney, rubbish storage hole, connect batcher below the hopper, batcher is connected to drying machine rubbish material inlet, waste incineration, the high-temperature flue gas pipeline of drawing from induced-draft fan after the dedusting links to each other with the hot blast conveying pipe road of drying machine bottom, drying machine exhaust emission tube road is connected to waste gas air-introduced machine inlet, the outlet of waste gas air-introduced machine is connected to the waste gas purification apparatus inlet, and the waste gas purification apparatus outlet feeds chimney; Garbage conveyor connects the drying machine rubbish material and is exported to rubbish storage hole, establishes ash conveyor below drying machine, and small garbage that drier conveyer is leaked down and dirt etc. are delivered to rubbish storage hole.
Compared with prior art, the utlity model has following advantage:
1) the high temperature flue gas drying house refuse that utilize to burn produces is fully recycled heat energy, simultaneously to the generation of steam and generated energy without any influence;
2) utilize the high temperature flue gas drying house refuse of burning generation, reduced moisture in the rubbish, improved rubbish low heat value 300~400kcal/kg, reduced the auxiliary fuel addition, reduced operating cost;
3) behind the drying garbage, because of the discharge of part moisture in the rubbish, the rubbish total amount of burning reduces, and can reduce the scale of incinerator, reduces equipment investment;
4) drying back waste gas is realized qualified discharge fully by biochemical purification device purified treatment, to not influence of environment.
Description of drawings
Fig. 1 is the structure chart of the dry pretreatment unit of the utility model domestic waste.
The specific embodiment
As shown in Figure 1, adopt the domestic waste drying pretreatment method of the utility model device to be: rubbish is before sending into the drying machine hopper, earlier Bulky Waste being selected send refuse grinder to carry out break process, mix homogenizing then, the good rubbish that will mix homogenizing is again packed in the rubbish drying machine hopper 1, by garbage feeding machine 2 rubbish is pushed and carries out drying in the rubbish drying machine 3; By 140~150 ℃ that draw behind the incinerator induced-draft fan high-temperature flue gas, the hot blast conveying pipe road 10 of drying machine bottom enters in the drying machine 3, as the drying garbage medium; House refuse is dried on the conveyer belt of drying machine 3, and 10~15% moisture becomes steam and enters dry back waste gas air-introduced machine 6 by the exhaust emission tube road 11 at drying machine top together with dry waste gas in the rubbish; Rubbish is discharged because of 10%~15% moisture, and low heat value can improve 300~400kcal/kg; Rubbish through drying machine 3 dryings is fallen on the garbage conveyor 5, is admitted to rubbish storage hole 9, prepares to carry out burning disposal.Small garbage that the conveyer belt of drying machine 3 leaks down and dirt etc. are collected by ash conveyor 4, because this part lime-ash is difficult for burning, so the mode of taking directly to drain is handled, so both saved cost of transportation, also alleviated simultaneously the pressure of incinerator, saved the energy, the waste gas that dry back is 110~120 ℃ is drawn by waste gas air-introduced machine 6, send into waste gas purification apparatus 7 and carry out the deodourizing processing, back up to standard enters atmosphere by chimney 8.

Claims (2)

1, the dry pretreatment unit of a kind of domestic waste, it is characterized in that, comprise hopper (1), batcher (2), drying machine (3), garbage conveyor (5), waste gas air-introduced machine (6), waste gas purification apparatus (7), chimney (8), rubbish storage hole (9), connect batcher (2) below the hopper (1), batcher (2) is connected to drying machine (3) rubbish material inlet, waste incineration, the high-temperature flue gas pipeline of drawing from induced-draft fan after the dedusting links to each other with the hot blast conveying pipe road (10) of drying machine (3) bottom, drying machine exhaust emission tube road (11) is connected to waste gas air-introduced machine (6) inlet, waste gas air-introduced machine (6) outlet is connected to waste gas purification apparatus (7) inlet, and waste gas purification apparatus (7) outlet feeds chimney (8); Garbage conveyor (5) connects drying machine (3) rubbish material and is exported to rubbish storage hole (9).
2, the dry pretreatment unit of a kind of domestic waste according to claim 1 is characterized in that, establishes ash conveyor (4) in drying machine (3) below, and small garbage that drying machine (3) conveyer belt is leaked down and dirt etc. are delivered to rubbish storage hole (9).
CNU2008202314681U 2008-12-11 2008-12-11 Municipal domestic refuse drying pretreatment device Expired - Lifetime CN201310895Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202314681U CN201310895Y (en) 2008-12-11 2008-12-11 Municipal domestic refuse drying pretreatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202314681U CN201310895Y (en) 2008-12-11 2008-12-11 Municipal domestic refuse drying pretreatment device

Publications (1)

Publication Number Publication Date
CN201310895Y true CN201310895Y (en) 2009-09-16

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Application Number Title Priority Date Filing Date
CNU2008202314681U Expired - Lifetime CN201310895Y (en) 2008-12-11 2008-12-11 Municipal domestic refuse drying pretreatment device

Country Status (1)

Country Link
CN (1) CN201310895Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102853432A (en) * 2012-05-01 2013-01-02 福州家禾机电成套设备有限公司 Garbage drying device
CN103157587A (en) * 2013-03-21 2013-06-19 无锡中易薄膜科技有限公司 Novel coating steam drying equipment
CN103398382A (en) * 2013-07-31 2013-11-20 华南理工大学 Waste microwave pretreatment method and pretreatment device thereof
CN103398384A (en) * 2013-07-31 2013-11-20 华南理工大学 Incinerator and method for reprocessing of waste undergoing microwave pretreatment
CN106090932A (en) * 2016-06-30 2016-11-09 杨敏 A kind of device and method utilizing heat produced by waste incineration to dry rubbish

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102853432A (en) * 2012-05-01 2013-01-02 福州家禾机电成套设备有限公司 Garbage drying device
CN103157587A (en) * 2013-03-21 2013-06-19 无锡中易薄膜科技有限公司 Novel coating steam drying equipment
CN103398382A (en) * 2013-07-31 2013-11-20 华南理工大学 Waste microwave pretreatment method and pretreatment device thereof
CN103398384A (en) * 2013-07-31 2013-11-20 华南理工大学 Incinerator and method for reprocessing of waste undergoing microwave pretreatment
CN106090932A (en) * 2016-06-30 2016-11-09 杨敏 A kind of device and method utilizing heat produced by waste incineration to dry rubbish
CN106090932B (en) * 2016-06-30 2019-04-02 杨敏 A kind of device and method using the drying rubbish of heat caused by waste incineration

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Granted publication date: 20090916