Utility model content
The purpose of this utility model is that providing a kind of be combined using revolving bed pyrolysis oven and melting reactor handles life
The system of rubbish, the system is easy to operate, processing procedure clean energy-saving, and the thermal efficiency is high.
The utility model discloses a kind of domestic garbage treating system, including material pit, feeding feed arrangement, revolving bed heat
Solve stove, pyrolysis oil air cooling device, melting reactor, Quench groove, waste heat boiler;
The material pit is used to stack house refuse raw material;
The house refuse raw material is sent into the feeding feed arrangement by grabbing bucket by the material pit;
The revolving bed pyrolysis oven has charging aperture, pyrolysis oil gas vent, carbonaceous residues outlet;The charging aperture with it is described
The discharging opening connection of feeding feed arrangement;
The revolving bed pyrolysis oven be ring packing structure, including be provided with infrared radiation heating pipe infrared heating zones and
It is provided with the gas heating area of regenerative gas radiant tube;
The pyrolysis oil air cooling device has pyrolysis oil gas entrance, the pyrolysis oil gas entrance and the revolving bed pyrolysis oven
Pyrolysis oil gas vent connection;
The melting reactor has carbonaceous residues entrance, high-temperature flue gas outlet, liquid slag outlet;The carbonaceous residues enter
Mouth is connected with the carbonaceous residues outlet of the revolving bed pyrolysis oven by feed auger;
The Quench groove has liquid slag entrance, and the liquid slag outlet of the liquid slag entrance and the melting reactor connects
Connect;
The waste heat boiler has high-temperature flue gas entry, the high-temperature flue gas of the high-temperature flue gas entry and the melting reactor
Outlet connection.
In above-mentioned system, in addition to heat regenerator, the heat regenerator is for receiving by waste heat pot
The low-temperature flue gas of stove feeding, the low-temperature flue gas with the air in the heat regenerator exchange heat obtaining cooled flue gas,
The cooled flue gas is sequentially sent to deduster, denitration desulfurizer, absorbent charcoal adsorber, chimney emission device.
In above-mentioned system, in addition to caustic wash tower, the caustic wash tower has condensing gas entrance, the condensing gas entrance with it is described
The condensing gas outlet connection of pyrolysis oil air cooling device.
It is preferred that, material-homogenating device, the discharge end of the material-homogenating device and institute are provided with the charging aperture of the revolving bed pyrolysis oven
Infrared heating zones are stated to communicate;Stirrer is provided between every two infrared radiation heating pipes, for stirring the life rubbish
Rubbish raw material, promotes the volatilization of moisture.
It is preferred that, heat accumulating type vortex burner is provided with the melting reactor, heat is provided for the melting reactor
Amount.
It is preferred that, the lower end of the feeding feed arrangement is provided with material metering device, former for measuring the house refuse
The transporting velocity of material.
The utility model obtains more pure water using infrared radiation heating, can not only be used for system water recycling,
Also it can be directly discharged in municipal wastewater pipe network, reduce sewage disposal expense.System of the present utility model is easy to operate, equipment operation
It is reliable and stable.Processing procedure clean energy-saving, non-pollutant discharge.The whole system thermal efficiency is high, and operating cost is low, and economic benefit is bright
It is aobvious.
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just scheme of the present utility model and the advantage of its various aspects be better understood when.However, specific implementations described below
Mode and embodiment are only the purposes of explanation, rather than to limitation of the present utility model.
As shown in figure 1, the schematic diagram of the domestic garbage treating system provided for the utility model.The system includes material pit
1st, feeding feed arrangement 2, revolving bed pyrolysis oven 3, melting reactor 4, Quench groove 5, waste heat boiler 6, heat regenerator 7, remove
Dirt device 8, denitration desulfurizer 9, absorbent charcoal adsorber 10, chimney emission device 11, pyrolysis oil air cooling device 12, caustic wash tower
13。
Material pit 1 is used to stack house refuse raw material, and house refuse raw material therein can be transported to feeding by grab bucket and enter
Expect in device 2.
Feeding feed arrangement 2 is provided with sealing device, and the house refuse raw material for will be transported by material pit 1, which is sent into, to be rotated
In bed pyrolysis oven 3, with charging aperture, discharging opening.Its lower end is provided with material metering device, for measuring the defeated of house refuse raw material
Send speed.
Revolving bed pyrolysis oven 3 is ring packing structure, and burner hearth is internally provided with distribution device, heater and stirring dress
Put.The feed inlet end of revolving bed pyrolysis oven 3 is provided with material-homogenating device, house refuse raw material can be evenly arranged in revolving bed pyrolysis
On the drapery panel of stove 3.
Revolving bed pyrolysis oven 3 includes infrared heating zones, gas heating area.Wherein, the discharging of infrared heating zones and material-homogenating device
End is communicated, and is provided with 2~4 infrared radiation heating pipes, and infrared radiation heating pipe is arranged on the top of drapery panel, every two
Stirrer is provided between infrared radiation heating pipe, for stirring house refuse raw material, promotes the volatilization of moisture.It is infrared in last root
Radiation heating tube is to many regenerative gas radiant tubes are provided between the discharging opening of revolving bed pyrolysis oven 3, on drapery panel
House refuse raw material is further heated.In the utility model, not limit infrared radiation transmission heating tube and regenerative gas radiant tube
Mode of heating and quantity.
Revolving bed pyrolysis oven 3 is used to carry out pyrolysis processing to house refuse raw material, can obtain carbonaceous residues and pyrolysis oil gas.
It has charging aperture, pyrolysis oil gas vent, carbonaceous residues outlet.Wherein, the discharging opening of charging aperture and feeding feed arrangement 2 connects
Connect, pyrolysis oil gas vent is arranged on the top of revolving bed pyrolysis oven 3.
Melting reactor 4 be used for by carbonaceous residues liquefaction obtains liquid slag and high-temperature flue gas, its have carbonaceous residues entrance,
High-temperature flue gas outlet, liquid slag outlet, wherein, the carbonaceous residues of carbonaceous residues entrance and revolving bed pyrolysis oven 3 export pass through into
Expect spiral connection, feed auger is arranged on the upper end of melting reactor 4.
In the utility model embodiment, the both sides of melting reactor 4 are provided with heat accumulating type vortex burner, are frit reaction
The burner hearth of device 4 provides heat.
High-temperature electric melting furnace, plasma heating reactor are also can select in the utility model, and other can make burner hearth
The reactor of temperature needed for temperature is increased to reaction.
Quench groove 5 is used to receive liquid slag, passes through quenching process formation solid glass body.It has liquid slag entrance, consolidated
State vitreum is exported.Also, liquid slag entrance is connected with the liquid slag outlet of melting reactor 4.
Waste heat boiler 6 can discharge the waste heat of high-temperature flue gas using carbonaceous residues liquefaction process, produce water vapour.It has height
Warm smoke inlet, low-temperature flue gas outlet.Wherein, high-temperature flue gas entry is connected with the high-temperature flue gas outlet of melting reactor 4.
There is heat regenerator 7 low-temperature flue gas entrance, cooled flue gas to export.For receiving what is sent into by waste heat boiler 6
Low-temperature flue gas, low-temperature flue gas with the air in heat regenerator 7 exchange heat obtaining cooled flue gas.Cooled flue gas is sent successively
Enter deduster 8, denitration desulfurizer 9, absorbent charcoal adsorber 10 to carry out after dedusting, denitration desulfurization, adsorption cleaning, via chimney
Fume extractor 11 is discharged.
Pyrolysis oil air cooling device 12 has pyrolysis oil gas entrance, condensing gas outlet, pyrolysis oil gas entrance and revolving bed heat
Solve the pyrolysis oil gas vent connection of stove 3.Caustic wash tower 13 has condensing gas entrance, the condensing gas entrance and pyrolysis oil air cooling device
12 condensing gas outlet connection.
The pyrolysis oil gas of domestic garbage pyrolysis process discharge is cooled down through pyrolysis oil air cooling device 12 successively, caustic wash tower 13 takes off
After sour gas, then send back in the regenerative gas radiant tube in revolving bed pyrolysis oven 3, carried for the pyrolysis of life garbage raw material
Heating load, the flue gas after burning is via the qualified discharge of chimney emission device 11.
As shown in Fig. 2 being flow signal of the utility model embodiment using the system processing house refuse shown in Fig. 1
Figure.Including step:
(1) house refuse is pre-processed
The step is used to pre-process house refuse, finally gives the life for meeting the feed needs of revolving bed pyrolysis oven 3
Garbage raw material living, it may include following one or more.
Screening:The house refuse shipped is transported in the rotary screen that aperture is 20*80 ㎜, the effect rolled in rotary screen
Under, filter out dregs therein.
Sort coarse crushing:Oversize after being screened through rotary screen, all progress sorting is broken in feeding sorting disintegrating machine, removes
Remove stone therein and glass blocks, and the large-scale thing block in house refuse is crushed to the ㎜ of particle diameter≤150 material simultaneously.
Pre- magnetic separation:Pre- magnetic separation is carried out to material by concentration equipment, ferrous metal therein is reclaimed.
Two-stage crushing:It is above-mentioned to make further broken according to the requirement of briquetting through broken material, it is broken for particle diameter < 20
㎜ material block;
Smart magnetic separation:The above-mentioned material through two-stage crushing carries out smart magnetic separation, reclaims small-sized ferrous metal therein.
After said one or multiple step process, that is, it is met the house refuse of the feed needs of revolving bed pyrolysis oven 3
Raw material.
(2) storage and conveying of house refuse raw material
Obtained pretreated house refuse feedstock delivery to material pit 1 is stacked 3~7 days.Then, will by grab bucket
House refuse raw material in material pit 1 is delivered in feeding feed arrangement 2.By the material meter for controlling the lower end of feeding feed arrangement 2
Measuring device, can adjust charging rate, so as to control the fabric thickness of house refuse raw material in revolving bed pyrolysis oven 3.
(3) pyrolysis processing of house refuse
House refuse raw material is sent into revolving bed pyrolysis oven 3 by the feeding feed arrangement 2 with sealing device.Charging
House refuse raw material is evenly arranged on drapery panel by the material-homogenating device set at mouthful.House refuse raw material is on drapery panel with rotation
The rotation of bed pyrolysis oven 3 passes sequentially through infrared heating zones, gas heating area, finally can obtain carbonaceous residues.
Wherein, the house refuse raw thickness on flitch is 20~50 ㎜.The rotating speed of revolving bed pyrolysis oven 3 is set to 10~
45min/r。
In infrared heating zones, infrared radiation heating pipe and the vertical range of house refuse ingredient upper surface on drapery panel are
50~100 ㎜.The vertical range of stirrer lower edge and cloth plate surface is 5~10 ㎜, for stirring for house refuse raw material,
Promote the volatilization of moisture after being heated up in lower floor's house refuse raw material.
Radiated infrared optical wavelength is 1~30 μm, the IR wavelengths frequency and the wavelength of hydrone in house refuse raw material
Intrinsic frequency is equal, so as to quickly be only absorbed by the water, and moisture temperature is able to quickly raise.Also, because ultrared heat is passed
Pass and do not need intermediate medium, interior of articles can be directly penetrating, realize the water of drapery panel top layer and internal layer house refuse raw material
Temperature is divided to raise simultaneously.
Infra-red radiation provides up to more than 70 times of heat flow density than heat convection.Therefore, entering in revolving bed pyrolysis oven 3
Infrared radiation heating pipe is set up at material mouth end, can substantially reduce the energy consumption in pyrolytic process, while shortening pyrolysis time, improves rotation
The disposal ability of bed pyrolysis oven 3.
In gas heating area, regenerative gas radiant tube and the vertical range of house refuse ingredient upper surface on drapery panel
For 50~100 ㎜, the temperature of regenerative gas radiant tube is 800~1100 DEG C, further provides heat for revolving bed pyrolysis oven 3
Amount.
In revolving bed pyrolysis oven 3, whole pyrolytic process employs the mode of radiant heating.Due to radiation energy with radiation away from
From being inversely proportional, and need to avoid house refuse raw material from contacting with radiant tube, cause equipment operation abnormal, it is therefore preferable that radiant tube
(being infrared radiation heating pipe and regenerative gas radiant tube) exists apart from the vertical range control of house refuse ingredient upper surface
50~100mm.
House refuse raw material moisture therein and organic is waved after the pyrolysis processing in infrared heating zones and gas heating area
Hair point is separated successively, obtains carbonaceous residues and pyrolysis oil gas.
Pyrolysis oil gas is sequentially sent in pyrolysis oil air cooling device 12, caustic wash tower 13, after condensed, removing sour gas
Combustion gas, then send back in revolving bed pyrolysis oven 3, it is passed through in regenerative gas radiant tube and burns, is that revolving bed pyrolysis oven 3 provides heat
Amount, the flue gas after burning is through the qualified discharge of chimney emission device 11.
(4) frit reaction
The carbonaceous residues that above-mentioned steps are obtained are sent out from the discharging spiral of revolving bed pyrolysis oven 3, then via feed auger
Sent into from the top of melting reactor 4.Heat accumulating type vortex burner therein provides heat for whole burner hearth, and fire box temperature is
1300~1500 DEG C, carbonaceous residues liquefy to form liquid slag and high-temperature flue gas.In liquid slag feeding Quench groove 5, at chilling
Reason, obtains solid glass body, heavy metal is effectively solidified, and forms non-toxic products.
Wherein, the percentage that carbonaceous residues account for house refuse raw material is 25wt%, with one-step method melt process house refuse
Compare, greatly reduce the volume and energy consumption of melting reactor 4.
In this step, the intrinsic extremely toxic substance of class containing chlorobenzene (including bioxin) in carbonaceous residues, in melting reactor 4
Generation cracking reaction, the overwhelming majority is cracked into nontoxic component.
(5) recycling of flue gas
Waste heat boiler 6 directly receives the high-temperature flue gas of above-mentioned steps generation, and can produce water using the heat of high-temperature flue gas steams
Vapour.The temperature of high-temperature flue gas is reduced to 400~550 DEG C from 1200~1400 DEG C, obtains low-temperature flue gas.
Then, low-temperature flue gas is sent into heat regenerator 7 and exchanged heat with air.It is low by rotary type heat exchanger
The temperature of warm flue gas is reduced to 200 DEG C of < in 3s from 400~550 DEG C, is prevented effectively from the extremely toxic substance of class containing chlorobenzene (including two Evil
English) recombine.Meanwhile, air is preheated to 300~400 DEG C, can be used as heat accumulating type vortex burner in melting reactor 4
Required combustion-supporting gas is used, and effectively improves the heat utilization efficiency of whole process.
Cooled flue gas is sequentially fed into deduster 8, denitration desulfurizer 9, activated carbon after heat regenerator 7 is discharged
Adsorbent equipment 10 carry out dedusting, removing nitrogen oxides and sulfide, adsorption cleaning after, reach zero release of pollutant, then via
Chimney emission device 11 is discharged.