CN107265456A - The system and method that calcium carbide is prepared using solid waste pyrolysis - Google Patents
The system and method that calcium carbide is prepared using solid waste pyrolysis Download PDFInfo
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- CN107265456A CN107265456A CN201710596909.1A CN201710596909A CN107265456A CN 107265456 A CN107265456 A CN 107265456A CN 201710596909 A CN201710596909 A CN 201710596909A CN 107265456 A CN107265456 A CN 107265456A
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 146
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 82
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002910 solid waste Substances 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 77
- 239000000571 coke Substances 0.000 claims abstract description 50
- 238000003723 Smelting Methods 0.000 claims abstract description 45
- 238000002156 mixing Methods 0.000 claims abstract description 35
- 150000001875 compounds Chemical class 0.000 claims abstract description 32
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 11
- 239000000292 calcium oxide Substances 0.000 claims abstract description 11
- 239000003245 coal Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 17
- 238000003801 milling Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 8
- 239000002817 coal dust Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 210000000952 spleen Anatomy 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
It the present invention relates to the use of the system and method that solid waste pyrolysis prepares calcium carbide.In the system, the first pyrolysis installation has charging aperture, high-temperature semi-coke outlet, pyrolysis gas outlet；Mixing arrangement has high-temperature semi-coke entrance, quick lime entrance, coal powder entrance, compound outlet, high-temperature semi-coke entrance is connected with high-temperature semi-coke outlet, the outer wall of mixing arrangement is provided with hollow heat tracing layer, air inlet and gas outlet are provided with hollow heat tracing layer, air inlet is connected with pyrolysis gas outlet, and the lower end of hollow heat tracing layer is provided with tar outlet；Shaped device has compound entrance, the outlet of type ball, and compound entrance is connected with compound outlet；Second pyrolysis installation has type ball entrance, the outlet of calcium carbide smelting palletizing, and type ball entrance is connected with the outlet of type ball；Calcium carbide smelting device has calcium carbide smelting palletizing entrance, calcium carbide outlet, and calcium carbide smelting palletizing entrance is connected with the outlet of calcium carbide smelting palletizing.The present invention prepares calcium carbide while solid waste is handled, and the energy and the thermal efficiency are higher.
Description
Technical field
Field is utilized the present invention relates to solid waste resource recovery, and in particular to one kind is pyrolyzed using solid waste and prepared
The system and method for calcium carbide.
Background technology
Calcium carbide is as a kind of important basic chemical industry raw material, mainly for the production of acetylene and ethynylation chemical product.China
The few oily deficency of energy source distribution, coal relative abundance so that calcium carbide has irreplaceable in the national economic development from now on
Important function.
At present, calcium carbide production technology haves the shortcomings that high energy consumption, seriously polluted, production capacity are low.The raw material that calcium carbide is smelted
Based on quality block semi-coke and lump lime powder.Not only cost of material is high, and the contact surface of block semi-coke and calcium lime powder
Product is small, and rate of heat transfer is slow, causes reaction temperature high, and power consumption is high.Moreover, the volatile matter in coal is most of with waste gas, dust
Form be discharged into air, bring serious environmental problem.
Semicoke is that, using weakly caking coal and non caking coal as primary raw material, by fast pyrolysis technology, what is obtained has high chemistry living
The material of the good characteristics such as property, high fixed carbon.These good characteristics, and the relatively low market price so that semicoke is extensive
Applied to calcium carbide industry.But, the raw material of wood-charcoal that semi-coke powder can not be produced directly as calcium carbide is used, and caking property itself is very poor, with
Calcium lime powder mixing is difficult to be molded.
The content of the invention
In view of the above-mentioned problems existing in the prior art, the present invention is directed to propose a kind of prepare electricity using solid waste pyrolysis
The semicoke that pyrolysis solid waste is obtained is used to prepare calcium carbide by the system and method for stone, method of the invention, and solves half
The problem of burnt difficult forming, realize effective utilization of resource and energy.
The present invention proposes the system that a kind of utilization solid waste pyrolysis prepares calcium carbide, including the first pyrolysis installation, mixed
Attach together put, shaped device, the second pyrolysis installation, calcium carbide smelting device.
First pyrolysis installation has charging aperture, high-temperature semi-coke outlet, pyrolysis gas outlet.
The mixing arrangement has high-temperature semi-coke entrance, quick lime entrance, coal powder entrance, compound outlet, the high temperature
Semicoke entrance is connected with the high-temperature semi-coke outlet of first pyrolysis installation.The outer wall of the mixing arrangement is provided with hollow heat tracing
Air inlet and gas outlet, the pyrolysis gas of the air inlet and first pyrolysis installation are provided with layer, the hollow heat tracing layer
Outlet connection.The lower end of the hollow heat tracing layer is provided with tar outlet.
The shaped device has compound entrance, the outlet of type ball, and the compound entrance is mixed with the mixing arrangement
Close material outlet connection.
Second pyrolysis installation has type ball entrance, the outlet of calcium carbide smelting palletizing, the type ball entrance and the shaping
The type ball outlet connection of device.
The calcium carbide smelting device have calcium carbide smelting palletizing entrance, calcium carbide outlet, the calcium carbide smelting palletizing entrance with
The calcium carbide smelting palletizing outlet connection of second pyrolysis installation.
Further, said system also includes drying device, milling device.The drying device has charging aperture, pyrolysis
Gas entrance, dried material outlet.The milling device has high-temperature semi-coke entrance, high-temperature semi-coke powder outlet.Wherein, the drying
Material outlet is connected with the charging aperture of first pyrolysis installation.The pyrolysis gas entrance of the drying device and the hollow heat tracing
The gas outlet connection of layer.The high-temperature semi-coke outlet of the high-temperature semi-coke entrance of the milling device and first pyrolysis installation connects
Connect.
It is preferred that, first pyrolysis installation is heat accumulating type rotating bed pyrolysis installation.The heat accumulating type rotating bed pyrolysis dress
Put includes feed zone, preheating zone, one area of reaction, 2nd area of reaction, 3rd area of reaction, discharge zone successively, wherein, the charging aperture is located at
The feed zone, the high-temperature semi-coke outlet is located at the discharge zone.
It is preferred that, first pyrolysis installation is rapid pyrolysis apparatus.
It is preferred that, second pyrolysis installation is heat accumulating type rotating bed pyrolysis installation.The heat accumulating type rotating bed pyrolysis dress
Put includes feed zone, one area of reaction, 2nd area of reaction, 3rd area of reaction, 4th area of reaction, discharge zone successively, wherein, the type ball entrance
Positioned at the feed zone, the calcium carbide smelting palletizing outlet is located at the discharge zone.
Further, the high-temperature semi-coke exit of first pyrolysis installation is provided with feed and claimed, for controlling to enter institute
State the quality of the high-temperature semi-coke of mixing arrangement.
It is preferred that, in addition to ladle, the ladle is arranged between second pyrolysis installation and calcium carbide smelting device, is used
In storage calcium carbide smelting palletizing.
The invention also provides a kind of method for preparing calcium carbide using solid waste pyrolysis according to said system, the side
Method includes step：
A, solid waste raw material sent into first pyrolysis installation, high-temperature semi-coke, pyrolysis are obtained through pyrolytic reaction
Gas；
B, the high-temperature semi-coke, quick lime, coal dust sent into the mixing arrangement, be uniformly mixed to get compound, institute
Pyrolysis gas is stated to send into the hollow heat tracing layer of the mixing arrangement；
C, the compound carry out pressure ball molding processing, obtain type ball；
D, the type ball sent into second pyrolysis installation, carry out pyrolysis processing, obtain calcium carbide smelting palletizing；
E, the calcium carbide smelting palletizing obtain calcium carbide after smelting.
It is preferred that, the above method also includes step：The pyrolysis gas is sent after the gas outlet discharge of the hollow heat tracing layer
Enter in the drying device.
Further, the temperature of the high-temperature semi-coke is 500~600 DEG C, and the temperature of the compound is 200~300 DEG C；
In the compound, the high-temperature semi-coke, the quick lime, the mass ratio of the coal dust are：(0.2~0.5)：1：(0.4~
0.7)。
The system and method that the present invention is provided can prepare calcium carbide using solid waste.This method has coupled solid waste
Thing is pyrolyzed and pyrolysis of coal process, while realizing solid waste and the utilization of coal grading sub-prime, solid waste pyrolysis is produced
High-temperature semi-coke and quick lime, pulverized coal forming obtain type ball, realize thermal state forming, type ball pyrolysis then prepared into calcium carbide, overcome
In the prior art the problem of the easy efflorescence of semicoke difficult forming, high temperature pyrolysis, the utilization rate of the energy and heat is improved, and expand
Calcium carbide prepares the source of raw material of wood-charcoal.
In the method for the present invention, the conveying of material is carried out under high-temperature closed environment between each device, is effectively utilized
The sensible heat of material.Also, the pyrolysis gas that solid waste pyrolytic process is produced is used in mixed process material be incubated to add
Heat or the drying process for raw material, improve the thermal efficiency of system.
Therefore, system and method for the invention not only solve the processing problem of solid waste, and can be prepared into
To calcium carbide product, higher economic value is created, realizes that the recycling clean and effective of solid waste is utilized.
Brief description of the drawings
Fig. 1 is that the system schematic of calcium carbide is prepared using solid waste pyrolysis in the embodiment of the present invention 1.
Fig. 2 is the method flow schematic diagram that calcium carbide is prepared using the system shown in Fig. 1.
Fig. 3 is that the system schematic of calcium carbide is prepared using solid waste pyrolysis in the embodiment of the present invention 2.
Fig. 4 is the method flow schematic diagram that calcium carbide is prepared using the system pyrolysis shown in Fig. 3.
Reference in accompanying drawing is as follows：
1st, the first pyrolysis installation；2nd, mixing arrangement；3rd, shaped device；4th, the second pyrolysis installation；5th, calcium carbide smelting device；6、
Ladle；7th, belt conveyor；8th, drying device；9th, milling device.
Embodiment
Below in conjunction with drawings and examples, the embodiment to the present invention is described in more details, so as to energy
Enough more fully understand the solution of the present invention and the advantage of its various aspects.However, specific embodiments described below and reality
Apply the purpose that example is only explanation, rather than limitation of the present invention.
Present invention firstly provides the system that a kind of utilization solid waste pyrolysis prepares calcium carbide, including the first pyrolysis dress
Put, mixing arrangement, shaped device, the second pyrolysis installation, calcium carbide smelting device.
First pyrolysis installation has charging aperture, high-temperature semi-coke outlet, pyrolysis gas outlet.
Mixing arrangement has high-temperature semi-coke entrance, quick lime entrance, coal powder entrance, compound outlet.It is preferred that, mixing dress
Put and select intensive mixer.Wherein, high-temperature semi-coke entrance is connected with the high-temperature semi-coke outlet of the first pyrolysis installation.Also, mixing
The outer wall of device is provided with hollow heat tracing layer, and the effect of hollow heat tracing layer is incubated and heated for mixing arrangement using pyrolysis gas,
Hot compound is obtained, also, pyrolysis gas temperature-fall period can condense and obtain tar.There is air inlet on hollow heat tracing layer and go out
Gas port, air inlet is connected with the pyrolysis gas outlet of the first pyrolysis installation, and lower end is provided with tar outlet, tar outlet and is provided with
Valve, the outflow for controlling tar.
Shaped device has compound entrance, the outlet of type ball.Wherein, the compound outlet of compound entrance and mixing arrangement
Connection.Particularly, because the compound that mixing arrangement is discharged is in hot, its process for being molded preparative ball is easier, type ball
Intensity it is higher.
Second pyrolysis installation has type ball entrance, the outlet of calcium carbide smelting palletizing.Wherein, the type of type ball entrance and shaped device
Ball outlet connection.
Calcium carbide smelting device has calcium carbide smelting palletizing entrance, calcium carbide outlet.Wherein, calcium carbide smelting palletizing entrance and second
The calcium carbide smelting palletizing outlet connection of pyrolysis installation.
When the system of the present invention is used to handle different solid waste, in addition to drying device, milling device.Dry
Device has charging aperture, pyrolysis gas entrance, pyrolysis gas outlet, dried material outlet.Milling device has high-temperature semi-coke entrance, height
Warm semi-coke powder outlet.Wherein, dried material outlet is connected with the charging aperture of the first pyrolysis installation.The pyrolysis gas entrance of drying device
It is connected with the gas outlet of hollow heat tracing layer.The high-temperature semi-coke outlet of the high-temperature semi-coke entrance and the first pyrolysis installation of milling device connects
Connect.The high-temperature semi-coke powder outlet of milling device is connected with the high-temperature semi-coke entrance of mixing arrangement.
First pyrolysis installation can select heat accumulating type rotating bed pyrolysis installation or rapid pyrolysis apparatus.Given birth to when for pyrolysis processing
During the larger particles such as rubbish living, biomass, the first pyrolysis installation selects heat accumulating type rotating bed pyrolysis installation；When for pyrolysis processing
During the smaller particles such as brown coal powder, junked tire, the first pyrolysis installation selects rapid pyrolysis apparatus.
Wherein, heat accumulating type rotating bed pyrolysis installation includes feed zone, preheating zone, one area of reaction, 2nd area of reaction, reaction successively
3rd area, discharge zone, wherein, charging aperture is located at feed zone, and high-temperature semi-coke outlet is located at discharge zone.
Second pyrolysis installation selects heat accumulating type rotating bed pyrolysis installation.Heat accumulating type rotating bed pyrolysis installation includes charging successively
Area, one area of reaction, 2nd area of reaction, 3rd area of reaction, 4th area of reaction, discharge zone, wherein, type ball entrance is located at feed zone, calcium carbide smelting
Refine pelletizing outlet and be located at discharge zone.Preheating zone need not be set in the device, the sensible heat of type ball can be directly utilized, save energy consumption,
Improve production capacity.
It is preferred that, the high-temperature semi-coke exit of the first pyrolysis installation is provided with feed and claimed, for controlling to enter mixing arrangement
Or the quality of the high-temperature semi-coke of milling device.
Also include ladle in the system of the present invention, be arranged between the second pyrolysis installation and calcium carbide smelting device, for depositing
Storing up electricity stone smelting palletizing.
Material transferring between different device is completed by belt conveyor, and belt conveyor is made from exotic material, and
Convey the progress in the environment of closed isolation air during material.
Embodiment 1
As shown in figure 1, the system schematic to prepare calcium carbide using house refuse, the system includes the drying being sequentially connected
Device 8, the first pyrolysis installation 1, milling device 9, mixing arrangement 2, shaped device 3, the second pyrolysis installation 4, ladle 6, calcium carbide smelting
Refine device 5.
Between the pyrolysis installation 1 of drying device 8 and first, between mixing arrangement 2 and shaped device 3, shaped device 3 and second
Belt conveyor 7 is provided between pyrolysis installation 4, for conveying material between different devices.
In the present embodiment, mixing arrangement 2 selects intensive mixer.First pyrolysis installation 1 and the second pyrolysis installation 4 are selected
Heat accumulating type rotating bed pyrolysis installation.Wherein, charging is included successively as the heat accumulating type rotating bed pyrolysis installation of the first pyrolysis installation 1
Area 101, preheating zone 102, one area 103 of reaction, two areas 104 of reaction, three areas 105 of reaction, discharge zone 106.Filled as the second pyrolysis
Put 4 heat accumulating type rotating bed pyrolysis installation includes feed zone 401, one area 402 of reaction, two areas 403 of reaction, 3rd area of reaction successively
404th, four areas 405 of reaction, discharge zone 406.
As shown in Fig. 2 the method flow schematic diagram to prepare calcium carbide based on the system processing house refuse shown in Fig. 1, bag
Include following steps：
(1) house refuse material extruding is shaped to 2~3cm of diameter, 10~15cm of length fuel rod, and sends into drying
It is dried in device to water content is within 10wt%, temperature is 120 DEG C, obtains dried material.
(2) dried material is sent into heat accumulating type rotating bed pyrolysis installation by belt conveyor by the charging aperture of feed zone, according to
It is secondary by preheating zone, reaction one area, reaction 2nd area, reaction 3rd area preheated, pyrolytic reaction, life refuse high temperature decomposition obtain
High-temperature semi-coke and pyrolysis gas of the temperature for 500~600 DEG C.Wherein, high-temperature semi-coke is discharged via discharge zone.Pyrolysis gas is via air inlet
It is intensive mixer Heat preservation, the condensation of pyrolysis gas temperature-fall period produces tar, by hollow heat tracing in the hollow heat tracing layer of mouth feeding
The tar outlet discharge of layer lower end, being delivered to after pyrolysis gas cooling by gas outlet in drying device is used to dry house refuse.
(3) high-temperature semi-coke is ground in feeding milling device through cooling to after 200 DEG C, obtains high-temperature semi-coke powder.High temperature
The Task-size Controlling of semi-coke powder is in below 3mm.
(4) high-temperature semi-coke powder, quick lime, middle low order coal dust are 0.2 according to mass ratio：1：In 0.7 feeding intensive mixer,
Uniform to be mixed to get compound, compound temperature under the Heat preservation effect of pyrolysis gas is maintained at 200~300 DEG C.
(5) hot compound is sent into shaped device via belt conveyor, is carried out pressure ball molding processing, is obtained type ball.
(6) type ball is sent into heat accumulating type rotating bed pyrolysis installation by belt conveyor by the charging aperture of feed zone, is passed through successively
One area of reaction, 2nd area of reaction, 3rd area of reaction, 4th area of reaction progress pyrolytic reaction are crossed, the pyrolysis of type ball obtains calcium carbide smelting palletizing, and
Discharged via discharge zone.
(7) calcium carbide smelting palletizing is sent into ladle and stored, is then fed into calcium carbide smelting device, at 2200 DEG C
Smelted under hot conditions, prepare calcium carbide.
Embodiment 2
As shown in figure 3, the system schematic to prepare calcium carbide using junked tire, the system includes first be sequentially connected
Pyrolysis installation 1, mixing arrangement 2, shaped device 3, the second pyrolysis installation 4, ladle 6, calcium carbide smelting device 5.
Between first pyrolysis installation 1 and mixing arrangement 2, between mixing arrangement 2 and shaped device 3, shaped device 3 and second
Belt conveyor 7 is provided between pyrolysis installation 4, for conveying material between different devices.
In the present embodiment, mixing arrangement 2 selects intensive mixer.First pyrolysis installation 1 selects rapid pyrolysis apparatus.Second
Pyrolysis installation 4 select heat accumulating type rotating bed pyrolysis installation, successively including feed zone 401, reaction one area 402, reaction two areas 403,
React three areas 404, four areas 405 of reaction, discharge zone 406.
As shown in figure 4, the method flow schematic diagram to prepare calcium carbide using junked tire based on the system shown in Fig. 3, bag
Include step：
(1) junked tire is crushed to particle diameter≤3mm, and sends into rapid pyrolysis apparatus and be pyrolyzed, obtain pyrolysis gas
With the high-temperature semi-coke that temperature is 500~600 DEG C.
(2) it is intensive mixer Heat preservation in the hollow heat tracing layer of pyrolysis gas feeding intensive mixer, meanwhile, in heat
Condensation obtains tar in the temperature-fall period vented one's spleen, and tar is remained in hollow heat tracing layer, and tar can be discharged after valve opening.Pyrolysis
Gas is reclaimed after the gas outlet discharge of hollow heat tracing layer in feeding tar cooling-collecting device and gas cleaning device.
(3) high-temperature semi-coke after cooling, is sent into intensive mixer, with quick lime and middle low order coal dust by belt conveyor
It is 0.5 according to mass ratio：1：0.4 is uniformly mixed, and compound is under the Heat preservation effect of pyrolysis gas, and temperature is maintained at
200~300 DEG C.
(4) hot compound is sent into shaped device via belt conveyor, is carried out pressure ball molding processing, is obtained type ball.
(5) type ball is sent into heat accumulating type rotating bed pyrolysis installation by belt conveyor via the charging aperture of feed zone, and according to
Secondary to carry out pyrolytic reaction by one area of reaction, 2nd area of reaction, 3rd area of reaction, 4th area of reaction, the pyrolysis of type ball obtains calcium carbide and smelts ball
Group, then discharges by discharge zone.
(6) calcium carbide smelting palletizing is sent into ladle and stored, is then fed into closed calcium carbide furnace, in 2200 DEG C of height
Smelted under the conditions of temperature and obtain calcium carbide.
As seen from the above embodiment, the present invention combines pyrolytic reaction process twice and prepares calcium carbide, is produced using pyrolytic process
Pyrolysis gas cause compound to be maintained at higher temperature, so as to realize the high-temperature molding of compound, overcome in the prior art
The problem of semicoke difficult forming.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the field, it can also do on the basis of the above description
Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
Among the obvious changes or variations that Shen goes out is still in protection scope of the present invention.
Claims (10)
1. the system that a kind of utilization solid waste pyrolysis prepares calcium carbide, it is characterised in that the system includes the first pyrolysis dress
Put, mixing arrangement, shaped device, the second pyrolysis installation, calcium carbide smelting device；
First pyrolysis installation has charging aperture, high-temperature semi-coke outlet, pyrolysis gas outlet；
The mixing arrangement has high-temperature semi-coke entrance, quick lime entrance, coal powder entrance, compound outlet, the high-temperature semi-coke
Entrance is connected with the high-temperature semi-coke outlet of first pyrolysis installation；The outer wall of the mixing arrangement is provided with hollow heat tracing layer,
Air inlet and gas outlet, the pyrolysis gas outlet of the air inlet and first pyrolysis installation are provided with the hollow heat tracing layer
Connection；The lower end of the hollow heat tracing layer is provided with tar outlet；
The shaped device has compound entrance, the outlet of type ball, the compound of the compound entrance and the mixing arrangement
Outlet connection；
Second pyrolysis installation has type ball entrance, the outlet of calcium carbide smelting palletizing, the type ball entrance and the shaped device
Type ball outlet connection；
The calcium carbide smelting device have calcium carbide smelting palletizing entrance, calcium carbide outlet, the calcium carbide smelting palletizing entrance with it is described
The calcium carbide smelting palletizing outlet connection of second pyrolysis installation.
2. system according to claim 1, it is characterised in that also including drying device, milling device；The drying device
With charging aperture, pyrolysis gas entrance, pyrolysis gas outlet, dried material outlet；The milling device has high-temperature semi-coke entrance, height
Warm semi-coke powder outlet；Wherein, the dried material outlet is connected with the charging aperture of first pyrolysis installation；The drying device
Pyrolysis gas entrance be connected with the gas outlet of the hollow heat tracing layer；The high-temperature semi-coke entrance of the milling device and described first
The high-temperature semi-coke outlet connection of pyrolysis installation, the high-temperature semi-coke powder outlet of the milling device and the high temperature half of the mixing arrangement
Burnt entrance connection.
3. system according to claim 2, it is characterised in that first pyrolysis installation is that heat accumulating type rotating bed is pyrolyzed dress
Put；The heat accumulating type rotating bed pyrolysis installation successively include feed zone, preheating zone, reaction one area, reaction 2nd area, reaction 3rd area,
Discharge zone, wherein, the charging aperture is located at the feed zone, and the high-temperature semi-coke outlet is located at the discharge zone.
4. system according to claim 1, it is characterised in that first pyrolysis installation is rapid pyrolysis apparatus.
5. system according to claim 1, it is characterised in that second pyrolysis installation is that heat accumulating type rotating bed is pyrolyzed dress
Put；The heat accumulating type rotating bed pyrolysis installation includes feed zone, one area of reaction, 2nd area of reaction, 3rd area of reaction, reaction four successively
Area, discharge zone, wherein, the type ball entrance is located at the feed zone, and the calcium carbide smelting palletizing outlet is located at the discharge zone.
6. system according to claim 1, it is characterised in that the high-temperature semi-coke exit of first pyrolysis installation is set
There is feed to claim, the quality of the high-temperature semi-coke for controlling to enter the mixing arrangement.
7. system according to claim 1, it is characterised in that also including ladle, the ladle is arranged on second heat
Solve between device and calcium carbide smelting device, for storing transport high temperature calcium carbide smelting palletizing.
8. a kind of according to any described systems of claim 1-7, the method that calcium carbide is prepared using solid waste pyrolysis, it is special
Levy and be, methods described includes step：
A, solid waste raw material sent into first pyrolysis installation, high-temperature semi-coke, pyrolysis gas are obtained through pyrolytic reaction；
B, the high-temperature semi-coke, quick lime, coal dust sent into the mixing arrangement, be uniformly mixed to get compound, the heat
Vent one's spleen and send into the hollow heat tracing layer of the mixing arrangement；
C, the compound carry out pressure ball molding processing, obtain type ball；
D, the type ball sent into second pyrolysis installation, carry out pyrolysis processing, obtain calcium carbide smelting palletizing；
E, the calcium carbide smelting palletizing obtain calcium carbide after smelting.
9. method according to claim 8, it is characterised in that also including step：The pyrolysis gas is through the mixing arrangement
Hollow heat tracing layer gas outlet discharge after send into the drying device.
10. method according to claim 8, it is characterised in that the temperature of the high-temperature semi-coke is 500~600 DEG C, described
The temperature of compound is 200~300 DEG C；In the compound, the high-temperature semi-coke, the quick lime, the quality of the coal dust
Than for：(0.2~0.5)：1：(0.4~0.7).
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