CN106082225A - The production system of a kind of carbide being provided with double shaft furnace and method - Google Patents
The production system of a kind of carbide being provided with double shaft furnace and method Download PDFInfo
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- CN106082225A CN106082225A CN201610638730.3A CN201610638730A CN106082225A CN 106082225 A CN106082225 A CN 106082225A CN 201610638730 A CN201610638730 A CN 201610638730A CN 106082225 A CN106082225 A CN 106082225A
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- high temperature
- lime kiln
- temperature pyrolysis
- stove
- oxygen
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000197 pyrolysis Methods 0.000 claims abstract description 134
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 113
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 113
- 239000004571 lime Substances 0.000 claims abstract description 113
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000001301 oxygen Substances 0.000 claims abstract description 84
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 84
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 49
- 239000005997 Calcium carbide Substances 0.000 claims abstract description 48
- 230000008569 process Effects 0.000 claims abstract description 48
- 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 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 42
- 239000002817 coal dust Substances 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims abstract description 39
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 26
- 239000003546 flue gas Substances 0.000 claims description 25
- 235000012255 calcium oxide Nutrition 0.000 claims description 12
- 239000000292 calcium oxide Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 9
- 239000003245 coal Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 27
- 239000000843 powder Substances 0.000 description 26
- 239000002893 slag Substances 0.000 description 11
- 239000000571 coke Substances 0.000 description 10
- 235000019738 Limestone Nutrition 0.000 description 9
- 239000006028 limestone Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 7
- 229910052791 calcium Inorganic materials 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 238000010891 electric arc Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical class CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to a kind of production system and the method for carbide being provided with double shaft furnace.Described system includes Lime kiln, high temperature pyrolysis stove, oxygen full-boiled process furnace of calcium carbide and oxygen rifle, and Lime kiln includes agstone feeding mouth, Calx feed opening, Lime kiln smoke inlet, is provided with the Lime kiln baffle plate of adjustable inclination in the burner hearth of described Lime kiln；High temperature pyrolysis stove includes coal dust feeding mouth, carbon dust feed opening, high temperature pyrolysis kiln gas entrance, is provided with the high temperature pyrolysis fender plate of adjustable inclination in the burner hearth of described high temperature pyrolysis stove；Oxygen full-boiled process furnace of calcium carbide includes Calx feeding mouth, carbon dust feeding mouth, exhanst gas outlet and discharging opening；The lance head of oxygen rifle is located in oxygen full-boiled process furnace of calcium carbide.The invention is provided with production system and the method for the carbide of double shaft furnace, by being respectively provided with the baffle plate of adjustable inclination in Lime kiln, high temperature pyrolysis stove, raw material reaction in stove and pyrolysis time can be controlled easily, it is ensured that the degree of raw material reaction and efficiency.
Description
Technical field
Present invention relates generally to a kind of production system and the method for carbide, be specifically related to a kind of carbide being provided with double shaft furnace
Production system and method.
Background technology
Acetylenogen. is commonly called as carbide, coke and calcium oxide react and prepare, be important Coal Chemical Industry product and basic chemical industry former
Material, mainly for the production of acetylene and ethynylation chemical product, including vinyl chloride serial, vinyl acetate series and acrylic etc. be
Row product.Chinese national economy development is had a very important role by carbide, and carbide yield is continuously increased nearly ten years.
Although the history that carbide industrial expansion is the most for many years, but the production technology of carbide mainly uses electric arc at present
The method of heating, i.e. produces high temperature to provide heat to produce carbide by electric arc furnace.Utilizing electric arc furnace is to utilize electrical energy production
Carbide.Its concrete production process is the entrance by electric furnace upper end or pipeline adds mixture in electric furnace, raw material open or
Being heated to about 2200 DEG C in airtight electric furnace, at high temperature reaction generates Acetylenogen. (carbide).The carbide melted, from discharging
Mouth is discharged, and enters calcium carbide pot cooling.Carbide cooled broken after as finished product packing.The carbon monoxide generated in reaction is then according to electricity
The type of stone stove is discharged by different way.The shortcoming of this technology is: need to utilize the block coke of high price and Calx as raw material；
Utilizing electric energy to generate heat, power consumption is high, and energy consumption cost is high；Due to electric arc almost in the center of electric arc furnace, unit heat size utilizes effect
Rate is limited, yields poorly；The high-temperature flue gas produced is fewer due to amount, and carbide per ton about produces 400m3, associated thermal energy is difficult to back
Receive.
Oxygen full-boiled process produces the method for carbide at present is bulk calcic raw material and carbon raw material to be preheated at epimere shaft furnace
After 800-1300 DEG C, then feed them in hypomere electric arc furnace.Burnt by oxygen and breeze blowing in electric arc furnace and be combined with electrode
Heat supply makes temperature rise to 1700-2200 DEG C, and carbide raw material reaction generates high-grade carbide.The calcium carbide furnace gas removing dust produced purifies
After by gas turbine combustion to drive electrical power generators, waste gas sensible heat is reclaimed by waste heat boiler.The shortcoming of this technology is: need profit
Block coke and Calx by high price are as raw material.The subject matter of oxygen full-boiled process is not solve block material reaction now
Problem is i.e. little due to block stock specific surface area so that raw material just need to can complete reaction at higher temperature, thus results in system
Energy consumption is high.The raw materials for production of oxygen full-boiled process remain as the high block coke of price comparison and limestone at present, the most effectively
Reduce cost of material.
Therefore, in order to be able to directly utilize the agstone of low cost and low order coal dust production carbide, and raw material can be controlled
Transporting velocity and residence time, it is ensured that the reaction effect of raw material, it is necessary to propose production system and the side of a kind of new carbide
Method.
Summary of the invention
It is an object of the invention to provide a kind of production system and the method for carbide being provided with double shaft furnace so that this technique energy
Enough directly utilize the powder such as agstone, coal dust to complete to react in stove, and transporting velocity and the time of staying of raw material can be controlled,
To ensure the reaction effect of raw material.
The invention provides the production system of a kind of carbide being provided with double shaft furnace, described system includes Lime kiln, high temperature
Pyrolysis oven, oxygen full-boiled process furnace of calcium carbide and oxygen rifle, wherein, described Lime kiln includes agstone feeding mouth, Calx feed opening, Calx
Shaft furnace smoke inlet, it is perpendicular that described agstone feeding mouth is located at the top of described Lime kiln, described Calx feed opening and Calx
Kiln gas entrance is located at the bottom of described Lime kiln；The Lime kiln of adjustable inclination it is provided with in the burner hearth of described Lime kiln
Baffle plate, described Lime kiln baffle plate is located under described agstone feeding mouth, described Calx feed opening and described Lime kiln
On smoke inlet；Described Lime kiln baffle plate leaves gap, on described Lime kiln baffle plate with the inwall of described Lime kiln
It is disposed with aperture；Described Lime kiln baffle plate by the rotating shaft support through described Lime kiln furnace wall on described Lime kiln；
Described high temperature pyrolysis stove includes coal dust feeding mouth, carbon dust feed opening, high temperature pyrolysis kiln gas entrance, and described coal dust feeding mouth is located at
The top of described high temperature pyrolysis stove, described carbon dust feed opening and high temperature pyrolysis kiln gas entrance are located under described high temperature pyrolysis stove
Portion；Being provided with the high temperature pyrolysis fender plate of adjustable inclination in the burner hearth of described high temperature pyrolysis stove, described high temperature pyrolysis fender plate sets
Under described coal dust feeding mouth, on described carbon dust feed opening and described high temperature pyrolysis kiln gas entrance；Described high temperature pyrolysis
Fender plate leaves gap with the inwall of described high temperature pyrolysis stove, and described high temperature pyrolysis fender plate is disposed with aperture；Described high temperature
Pyrolysis oven baffle plate by the rotating shaft support through described high temperature pyrolysis stove furnace wall on described high temperature pyrolysis stove；Described oxygen full-boiled process carbide
Stove includes Calx feeding mouth, carbon dust feeding mouth, exhanst gas outlet and discharging opening, and described Calx feeding mouth connects described Lime kiln
Calx feed opening, described carbon dust feeding mouth connects the carbon dust feed opening of described high temperature pyrolysis stove, and the connection of described exhanst gas outlet is described
Lime kiln smoke inlet and described high temperature pyrolysis kiln gas entrance；The lance head of described oxygen rifle is located at described oxygen full-boiled process furnace of calcium carbide
In, described oxygen rifle stretches in described oxygen full-boiled process furnace of calcium carbide from the furnace roof of described oxygen full-boiled process furnace of calcium carbide.
Above-mentioned system, is sequentially provided with multiple Calx with described inclination angle from top to bottom in the burner hearth of described Lime kiln
Shaft furnace baffle plate, the vertical centrage of the most described Lime kiln in inclination angle of adjacent described Lime kiln baffle plate is arranged symmetrically with；Described
Multiple high temperature pyrolysis fender plate with described inclination angle, adjacent described height it is sequentially provided with from top to bottom in the burner hearth of high temperature pyrolysis stove
The vertical centrage of the inclination angle the most described high temperature pyrolysis stove that warm solves fender plate is arranged symmetrically with.
Above-mentioned system, described Lime kiln baffle plate and described high temperature pyrolysis fender plate all with the angle scalable of horizontal plane
It it is 30 °-60 °；Hole diameter on described Lime kiln baffle plate and described high temperature pyrolysis fender plate is 10mm-30mm.
Above-mentioned system, described Lime kiln and described high temperature pyrolysis stove are block furnace, described Lime kiln baffle plate and
The 0.5-0.95 of described high temperature pyrolysis fender plate all length of sides of a length of respective place stove along the incline direction at respective inclination angle
Times, the rotary shaft of adjacent described Lime kiln baffle plate is described Lime kiln limit in the distance of the vertical direction of described Lime kiln
Long 0.2-1.5 times；The rotary shaft of adjacent described high temperature pyrolysis fender plate is in the distance of the vertical direction of described high temperature pyrolysis stove
For described high temperature pyrolysis sole length 0.2-1.5 times.
Above-mentioned system, the material of described Lime kiln baffle plate and described high temperature pyrolysis fender plate is heat-resistance stainless steel；
The junction of described Lime kiln baffle plate and described high temperature pyrolysis fender plate and respective place stove is equipped with sealing device；Described stone
It is equipped with rotation drive rod in the ash rotating shaft of shaft furnace and the rotating shaft of described high temperature pyrolysis stove.
Above-mentioned system, the exhanst gas outlet of described oxygen full-boiled process furnace of calcium carbide is respectively communicated with described Calx by high-temperature flue gas pipeline
High-temperature flue gas pipe interior described in shaft furnace gas approach and described high temperature pyrolysis kiln gas import is provided with water-cooled flue.
Above-mentioned system, the discharging opening of described oxygen full-boiled process furnace of calcium carbide is provided with radar level gauge or capacitance material level meter；Described stone
The agstone feeding mouth of ash shaft furnace is connected with agstone speed governing batcher, and the coal dust feeding mouth of described high temperature pyrolysis stove is connected with coal
Powder speed governing batcher.
Above-mentioned system, the structure of described oxygen rifle is telescopic water cooled lance, and the material of the lance head of described oxygen rifle is copper,
The sleeve internal layer of described oxygen rifle is blowing oxygen layer, and outermost is cooling circulating water layer；The oxygen inlet of described blowing oxygen layer
Connect and have the coal dust import connection of breeze blowing layer described in oxygen channel to have pulverized coal channel.
The invention provides a kind of production method utilizing said system to carry out carbide, described method includes step: by stone
Limestone flour is sent into described Lime kiln and is reacted, and obtains quick lime；Coal dust is sent into described high temperature pyrolysis stove be pyrolyzed,
To carbon dust；Described quick lime is sent into described oxygen full-boiled process furnace of calcium carbide with carbon dust, makes described oxygen rifle spray to described oxygen full-boiled process furnace of calcium carbide
Oxygen blast gas, oxygen full-boiled process generates carbide；By described oxygen full-boiled process furnace of calcium carbide produce high-temperature flue gas each lead into described Lime kiln and
Described high temperature pyrolysis stove.
Above-mentioned method, described method further comprises the steps of: by speed governing batcher governing speed to control described limestone
The feeding amount of powder and coal dust；Combustible gas or oil is extracted from the pyrolysis smoke of described high temperature pyrolysis stove；By regulating described Calx
The inclination angle of shaft furnace baffle plate and described high temperature pyrolysis fender plate is to control the gliding speed of agstone and coal dust；Described by regulation
The agstone time of staying in described Lime kiln is to control the extent of reaction of described agstone；By controlling high temperature cigarette
The water yield in feed channel enters the temperature in described reduction shaft furnace to control flue gas；By the discharging at described oxygen full-boiled process furnace of calcium carbide
The delivery rate controlling described agstone and coal dust behind mouth detection material position further regulates the feeding of agstone and coal dust
Amount, to prevent described Calx feed opening from blocking with carbon dust feed opening.
The beneficial effects of the present invention is, this technology utilization limestone and coal dust produce carbide, considerably reduce former material
The cost of material.
Anti-in stove of raw material can be controlled easily in two shaft furnaces of the Lime kiln of the present invention and high temperature pyrolysis stove
Should or pyrolysis time, it is ensured that raw material reaction or the degree of pyrolysis and efficiency.
The present invention utilizes foamed slag to solve the powder problem during carbide produces, and utilizes powder to produce carbide, reduces anti-
Answer temperature, decrease energy consumption.
Additionally, combustible gas or oil also can be extracted from pyrolysis smoke to produce new benefit.
Accompanying drawing explanation
Fig. 1 is the system structure sketch of the embodiment of the present invention；
Fig. 2 is the adjustable pyrolysis oven interior panelling front view structural representation of the embodiment of the present invention；And
Fig. 3 be in Fig. 2 the A of adjustable pyrolysis oven interior panelling to structural representation.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is explained in more detail, in order to energy
The advantage being enough more fully understood that the solution of the present invention and its various aspects.But, specific embodiments described below and reality
Executing example is only descriptive purpose rather than limitation of the present invention.
Below in conjunction with accompanying drawing 1, embodiments of the invention are described in further detail.Being provided with of the present embodiment is double perpendicular
Stove the production system of carbide include: 1, agstone hopper；2, speed governing batcher；3, air vent；4, Lime kiln；5, stone
Ash shaft furnace baffle plate；6, high-temperature flue gas pipeline；7, oxygen full-boiled process furnace of calcium carbide；8, oxygen rifle；9, high-temperature flue gas pipeline；10, high temperature pyrolysis stove
Baffle plate；11, high temperature pyrolysis stove；12, air vent；13, speed governing batcher；14, coal dust hopper.Wherein, agstone hopper 1, coal
Powder bucket 14, speed governing batcher 2 and 13 etc. can arrange or be replaced by other device according to actual needs.
Being provided with two adjustable shaft furnaces in the present invention, one is at high temperature reacted generation Calx for limestone, is referred to as
For Lime kiln, another is for jet coal high temperature pyrolysis, referred to as high temperature pyrolysis stove, and two shaft furnace structures are similar, and function is not
With.
Described Lime kiln 4 includes agstone feeding mouth, Calx feed opening, Lime kiln smoke inlet, described Calx
Stone powder feeding mouth is located at the top of described Lime kiln 4, and described Calx feed opening and Lime kiln smoke inlet are located at described stone
The bottom of ash shaft furnace 4；The Lime kiln baffle plate 5 of adjustable inclination, described Lime kiln it is provided with in the burner hearth of described Lime kiln 4
Baffle plate 5 is located under described agstone feeding mouth, on described Calx feed opening and described Lime kiln smoke inlet；Described
Lime kiln baffle plate 5 leaves gap with the inwall of described Lime kiln 4, and described Lime kiln baffle plate 5 is disposed with aperture；Described
Lime kiln baffle plate 5 is supported on described Lime kiln 4 by the rotating shaft 51 through described Lime kiln 4 furnace wall.
Described high temperature pyrolysis stove 11 includes coal dust feeding mouth, carbon dust feed opening, high temperature pyrolysis kiln gas entrance, described coal dust
Feeding mouth is located at the top of described high temperature pyrolysis stove, described carbon dust feed opening and high temperature pyrolysis kiln gas entrance and is located at described high temperature
The bottom of pyrolysis oven.The high temperature pyrolysis fender plate 10 of adjustable inclination, described height it is provided with in the burner hearth of described high temperature pyrolysis stove 11
Warm solve fender plate 10 be located under described coal dust feeding mouth, described carbon dust feed opening and described high temperature pyrolysis kiln gas entrance it
On.Described high temperature pyrolysis fender plate 10 leaves gap, described high temperature pyrolysis fender plate 10 with the inwall of described high temperature pyrolysis stove 11
On be disposed with aperture.Described high temperature pyrolysis fender plate 10 by the rotating shaft support through described high temperature pyrolysis stove 11 furnace wall in described height
On temperature pyrolysis oven 11.
Baffle arrangement in high temperature pyrolysis stove 11 is identical with the baffle arrangement in Lime kiln 4.
Described oxygen full-boiled process furnace of calcium carbide 7 includes Calx feeding mouth, carbon dust feeding mouth, exhanst gas outlet and discharging opening.Described Calx
Feeding mouth connects the Calx feed opening of described Lime kiln 4, and described carbon dust feeding mouth connects the carbon dust of described high temperature pyrolysis stove 11
Feed opening, described exhanst gas outlet connects described Lime kiln smoke inlet and described high temperature pyrolysis kiln gas entrance.
The lance head of described oxygen rifle 8 is located in described oxygen full-boiled process furnace of calcium carbide 7, and described oxygen rifle 8 is from described oxygen full-boiled process furnace of calcium carbide 7
Furnace roof stretch in described oxygen full-boiled process furnace of calcium carbide 7.
Above-mentioned system, is sequentially provided with multiple stone with described inclination angle from top to bottom in the burner hearth of described Lime kiln 4
Ash shaft furnace baffle plate 5, the vertical centrage of the most described Lime kiln in inclination angle of adjacent described Lime kiln baffle plate is arranged symmetrically with.With
Sample, it is sequentially provided with multiple high temperature pyrolysis fender plate with described inclination angle in the burner hearth of described high temperature pyrolysis stove 11 from top to bottom
10, the vertical centrage of the inclination angle the most described high temperature pyrolysis stove 11 of adjacent described high temperature pyrolysis fender plate 10 is arranged symmetrically with.
In hopper, the agstone of 0-1mm and the coal dust of 0-2mm are the most right by arriving under closed speed governing batcher respectively
Inside the shaft furnace answered, two shaft furnaces are arranged symmetrically with.Speed governing batcher may be designed as spiral speed regulation batcher, protects while feed
Sealing between card shaft furnace and raw material hopper.
The delivery rate of batcher controls according to the response speed in oxygen full-boiled process furnace of calcium carbide 7, and response speed is very fast, feed speed
Degree increases, otherwise then reduces.
The ratio of agstone and coal dust controls according to the constituent adjustment of product, if CaO content is high in carbide, then increases
Add the ratio of carbon, otherwise then reduce.
Raw material passes through baffle plate slide downward in shaft furnace, the speed glided by the Angle ambiguity difference regulating respective baffle plate
And the response time.The speed of the decline of agstone and coal dust can be respectively by Lime kiln baffle plate 5 and high temperature pyrolysis fender plate 10
Angle ambiguity.Baffle angle is big, and material decrease speed is fast, and the time of staying in stove is short；Baffle angle is little, reduction of speed under material
Degree is slow, and the time of staying in stove is long.Depending on the foundation of regulation can be according to the outlet temperature of oxygen full-boiled process furnace of calcium carbide 7, typically export
Temperature is between 1500 DEG C-1100 DEG C.Outlet temperature is high, and the time of staying is short, on the contrary then the time of staying long.
The design principle of baffle plate 5 or 10 is the longest principle in material path, ensures can be each in the shaft furnace of place again simultaneously
Flue gas resistance can not be the biggest.
According to above principle, simultaneously according to baffle plate 5 or 10 and the coefficient of friction of raw material powder, for foursquare shaft furnace, if
0.5-0.95 times of the meter the baffle plate 5 or 10 a length of shaft furnace length of side along the incline direction at its inclination angle, preferably about 0.75 times.
Difference in height between the rotary shaft of adjacent screen is 0.2-1.5 times of the pyrolysis oven length of side, preferably about 0.5 times.Baffle plate 5 or 10
It is defined as 30 °-60 ° with the range of accommodation of the angle of horizontal plane.The structure of instantiation and size are shown in that Fig. 2 and Fig. 3 is shown (in figure
Only providing the structural representation of Lime kiln baffle plate 5, the structure of high temperature pyrolysis fender plate 10 is identical with Lime kiln baffle plate 5).Figure
In concrete structure and size be exemplary illustration.Certainly shaft furnace can also be other shape as circular.When shaft furnace is other shape
During shape, also it is according to the longest principle in material path and to consider too greatly the flue gas resistance in shaft furnace can not be designed the knot of baffle plate
Structure and arrangement form.
Such as, when the angle of baffle plate 5 or 10 with horizontal plane is 36 °, total distance is shaft furnace height 2.1 times of left sides of stream
Right.Due to frictional force and the impact of collision, material falls to being become the reciprocal downglide motion of low speed by the movement of falling object, with whole process
Situation (being not provided with baffle plate) for free-falling is compared, and raw material powder fall time is 5-12 times of free-fall time.More than have
Body parameter can make the appropriate adjustments according to the particle size range of the wind speed in pyrolysis oven and raw material powder.Baffle plate 5 and the material of 10 are heat-resisting
Rustless steel.Baffle arrangement has the aperture of diameter 10mm-30mm, and high-temperature gas is flow through aperture and shaft furnace and baffle plate by the lower section of shaft furnace
Gap between 5 or 10 flows up, to ensure the contact of raw material powder and high-temperature gas.
As in figure 2 it is shown, Lime kiln baffle plate 5 have the rotating shaft 51 that baffle plate can be made movable and and shaft furnace between sealing dress
Put.Reinforcement 52 can be set to ensure intensity and the rigidity of baffle plate 5 on baffle plate 5.The rotation of baffle plate 5 can hand-turning also can machine
Drive, baffle plate 5 can be designed with rotation drive rod 53.Certainly, high temperature pyrolysis fender plate 10 also can be so designed that.
High-temperature gas reverse flow in raw material powder and shaft furnace.Agstone under the high temperature conditions react generation CaO and
CO2, at high temperature there is pyrolytic reaction in coal dust, generates coke and pyrolysis gas.The gas generated is discharged with high-temperature flue gas, i.e. CO2With
High-temperature flue gas enters back into later stage processing system after air vent 3 is discharged.Generate pyrolysis gas with high-temperature flue gas discharge after from aerofluxus
Mouth 12 enters back into later stage processing system after discharging.The pyrogenic steam that pyrolysis produces through condensation, purify available high-quality oil,
Gas product.In the CaO generated and carbon dust enter follow-up oxygen full-boiled process furnace of calcium carbide 7, reaction generates carbide.
Raw material powder is falling during from shaft furnace top to bottom, and progressively fractional order reaction, by regulation in shaft furnace
The time of staying is to control the extent of reaction.The extent of reaction at spout of shaft furnace can reach about 95%.
The discharging opening of oxygen full-boiled process furnace of calcium carbide 7 is by arranging the facility such as radar level gauge or capacitance material level meter sensing blanking feelings
Condition, prevents feed opening from blocking.If it find that feed opening gathers materials too much, reduce discharge quantity by the delivery rate controlling top,
Prevent blocking.
Oxygen rifle structure is telescopic water cooled lance, and wherein, middle injecting oxygen, outside is cooling circulating water, oxygen rifle head
Material is copper lance head.
In oxygen full-boiled process furnace of calcium carbide 7, coke and calcium lime powder enter oxygen full-boiled process furnace of calcium carbide.Carbon dust fires under the conditions of pure oxygen
Burning, carbon dust and oxygen reaction generate CO simultaneously.Utilize the CO generated and portion of flux to make furnace of calcium carbide top form foamed slag, utilize
Foamed slag catches pulverized limestone and carbon dust, and reaction is carried out in foamed slag.A carbon dust part and oxygen reaction provide heat and reaction
The temperature needed, another part and CaO reaction generate carbide.Discharged by discharging opening discontinuity after having reacted.Carbide passes through
Cooling in calcium carbide pot it is discharged to again after material mouth.
The exhanst gas outlet of described oxygen full-boiled process furnace of calcium carbide 7 is respectively communicated with described Lime kiln cigarette by high-temperature flue gas pipeline 6 and 9
Gas import and described high temperature pyrolysis kiln gas import.Described high-temperature flue gas pipeline 6 and 9 is internally provided with water-cooled flue.Oxygen full-boiled process
The high-temperature flue gas that furnace of calcium carbide 7 produces enters shaft furnace by the water-cooled flue in high-temperature flue gas pipeline 6,9.Can be by regulating respective water
The temperature in cold smoke road controls to enter the gas temperature of shaft furnace.
The present invention can utilize agstone and coal dust to produce carbide, considerably reduces raw-material cost.The present invention
Lime kiln and two shaft furnaces of high temperature pyrolysis stove in can control raw material reaction in stove or pyrolysis time easily, can
To ensure raw material reaction or the degree of pyrolysis and efficiency.The present invention utilizes foamed slag to solve the powder problem during carbide produces,
Utilize powder to produce carbide, reduce reaction temperature, decrease energy consumption.
Additionally, combustible gas or oil also can be extracted from pyrolysis smoke to produce new benefit.
Embodiment
Agstone is first placed into hopper 1, sends into Calx with speed according to a certain percentage by the speed governing batcher 2 of bottom
Shaft furnace 4.Limestone powder glides along Lime kiln baffle plate 5 in shaft furnace 4, reacts under conditions of high-temperature flue gas simultaneously, logical
Spend decrease speed and the response time of the Angle ambiguity pulverized limestone of regulating fender.Agstone reacts generation under the high temperature conditions
CaO and CO2, CO2Entrance next procedure is got rid of from air vent 3 with high-temperature flue gas.Calcium lime powder enters furnace of calcium carbide 7 by feed opening
Participate in reaction.
Coal dust puts into hopper 14, by the speed governing batcher 13 of bottom, sends into high temperature pyrolysis with speed according to a certain percentage
Stove 11.Coal dust powder glides along high temperature pyrolysis fender plate 10 in high temperature pyrolysis stove 11, simultaneously under conditions of high-temperature flue gas
There is pyrolytic reaction.By adjusting the angle of high temperature pyrolysis fender plate 10 to control decrease speed and the response time of coal dust.Coal
Powder at high temperature occurs pyrolytic reaction to generate coke and pyrolysis gas.The gas generated is discharged with high-temperature flue gas and is discharged from air vent 12
Rear entrance later stage processing system, the carbon dust of generation enters oxygen full-boiled process furnace of calcium carbide 7 and reacts.
Oxygen enters oxygen full-boiled process furnace of calcium carbide 7 by oxygen rifle 8, oxygen full-boiled process furnace of calcium carbide 7 in and carbon dust burning produce heat with
High temperature.Under the high temperature conditions, Calx and carbon dust reaction generate carbide, utilize bubble form foamed slag, furnace of calcium carbide on surface in simultaneously
Foam slag catches calcium lime powder and coke powder, is allowed in foamed slag reaction.After having reacted, discharged by discharging opening interval.Reaction is produced
Raw high-temperature flue gas enters Lime kiln 4 and high temperature pyrolysis stove 11 by the water-cooled flue in high temperature pyrolysis pipeline 6 and 9 respectively.
Its exit gas temperature can be controlled within the specific limits by the water yield of regulation water-cooled flue.
Hereinafter it is specifically described step by step.
First agstone is put into hopper 1.Limestone granularity scope is 0-1mm.Generate after shaft furnace pyroreaction
Calcium lime powder, calcium lime powder composition such as following table:
Table 1
| Title | CaO% | MgO% | Activity degree ml |
| Active lime | ≥90 | ≤0.7 | ≥300 |
Coal dust puts into hopper 14, and coal powder size is 0-2mm, the composition of coal dust such as following table:
Table 2
| Composition, % | Fixed carbon | Fugitive constituent | Ash | S |
| Coal dust | 65～75 | 20～25 | 7～10 | 0.2～0.3 |
Coal dust is pyrolyzed under the hot environment of shaft furnace, generates coke and pyrolysis gas, coke composition such as following table:
Table 3
| Composition, % | M<sub>ad</sub> | A<sub>ad</sub> | V<sub>ad</sub> | FC<sub>ad</sub> |
| Carbon dust | 0.50 | 7.55 | 5.08 | 86.87 |
Coke and calcium lime powder enter oxygen full-boiled process furnace of calcium carbide 7, and carbon dust burns under the conditions of pure oxygen.Control in-furnace temperature to exist
Between 2000 DEG C-2200 DEG C, carbon dust and oxygen reaction generate CO simultaneously, utilize the CO generated and portion of flux to make furnace of calcium carbide top
Forming foamed slag, utilize foamed slag to catch calcium lime powder and carbon dust, reaction is carried out in foamed slag.The carbide formed passes through discharging
Mouth is discharged to cooling in calcium carbide pot.Carbide composition such as following table:
Table 4
| Composition | CaC<sub>2</sub> | CaO | SiO<sub>2</sub> | MgO | Fe<sub>2</sub>O<sub>3</sub>+Al<sub>2</sub>O<sub>3</sub> | C |
| Content % | 85.3 | 9.5 | 2.1 | 0.35 | 1.45 | 1.2 |
Wherein, the M in table 3adRepresent air-dried moisture；AadRepresent and be dried base ash；VadRepresent air-dried basis to wave
Send out and divide；FCadRepresent air-dried basis fixed carbon.
As seen from the above-described embodiment, agstone and coal dust effectively can be generated carbide by technical scheme.
It is last that it is noted that obviously above-described embodiment is only for clearly demonstrating example of the present invention, and also
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out change or the variation of other multi-form.Here without also cannot all of embodiment be given exhaustive.And thus drawn
What Shen went out obviously changes or changes among still in protection scope of the present invention.
Claims (10)
1. being provided with a production system for the carbide of double shaft furnace, described system includes Lime kiln, high temperature pyrolysis stove, oxygen full-boiled process electricity
Stone stove and oxygen rifle, wherein,
Described Lime kiln includes agstone feeding mouth, Calx feed opening, Lime kiln smoke inlet, and described agstone enters
Material mouth is located at the top of described Lime kiln, and described Calx feed opening and Lime kiln smoke inlet are located at described Lime kiln
Bottom；Being provided with the Lime kiln baffle plate of adjustable inclination in the burner hearth of described Lime kiln, described Lime kiln baffle plate is located at institute
State under agstone feeding mouth, on described Calx feed opening and described Lime kiln smoke inlet；Described Lime kiln keeps off
Plate leaves gap with the inwall of described Lime kiln, and described Lime kiln baffle plate is disposed with aperture；Described Lime kiln baffle plate
By the rotating shaft support through described Lime kiln furnace wall on described Lime kiln；
Described high temperature pyrolysis stove includes coal dust feeding mouth, carbon dust feed opening, high temperature pyrolysis kiln gas entrance, described coal dust feeding mouth
It is located at the top of described high temperature pyrolysis stove, described carbon dust feed opening and high temperature pyrolysis kiln gas entrance and is located at described high temperature pyrolysis stove
Bottom；The high temperature pyrolysis fender plate of adjustable inclination, described high temperature pyrolysis fender it is provided with in the burner hearth of described high temperature pyrolysis stove
Plate is located under described coal dust feeding mouth, on described carbon dust feed opening and described high temperature pyrolysis kiln gas entrance；Described high temperature
Pyrolysis oven baffle plate leaves gap with the inwall of described high temperature pyrolysis stove, and described high temperature pyrolysis fender plate is disposed with aperture；Described
High temperature pyrolysis fender plate by the rotating shaft support through described high temperature pyrolysis stove furnace wall on described high temperature pyrolysis stove；Described oxygen full-boiled process
Furnace of calcium carbide includes Calx feeding mouth, carbon dust feeding mouth, exhanst gas outlet and discharging opening, and described Calx feeding mouth connects described Calx and erects
The Calx feed opening of stove, described carbon dust feeding mouth connects the carbon dust feed opening of described high temperature pyrolysis stove, and described exhanst gas outlet connects
Described Lime kiln smoke inlet and described high temperature pyrolysis kiln gas entrance；
The lance head of described oxygen rifle is located in described oxygen full-boiled process furnace of calcium carbide, and described oxygen rifle is stretched from the furnace roof of described oxygen full-boiled process furnace of calcium carbide
Enter in described oxygen full-boiled process furnace of calcium carbide.
System the most according to claim 1, it is characterised in that be sequentially provided with from top to bottom in the burner hearth of described Lime kiln
Multiple Lime kiln baffle plates with described inclination angle, erecting of the most described Lime kiln in inclination angle of adjacent described Lime kiln baffle plate
Straight centrage is arranged symmetrically with；Multiple high temperature with described inclination angle it is sequentially provided with from top to bottom in the burner hearth of described high temperature pyrolysis stove
Pyrolysis oven baffle plate, the vertical centrage symmetry cloth of the inclination angle the most described high temperature pyrolysis stove of adjacent described high temperature pyrolysis fender plate
Put.
System the most according to claim 1, it is characterised in that described Lime kiln baffle plate and described high temperature pyrolysis fender plate
All angles with horizontal plane are adjustable as 30 °-60 °；Aperture on described Lime kiln baffle plate and described high temperature pyrolysis fender plate
Diameter is 10mm-30mm.
System the most according to claim 1, it is characterised in that described Lime kiln and described high temperature pyrolysis stove are square
Stove, described Lime kiln baffle plate and described high temperature pyrolysis fender plate all a length of respective institutes along the incline direction at respective inclination angle
At 0.5-0.95 times of the length of side of stove, the rotary shaft of adjacent described Lime kiln baffle plate is at the vertical direction of described Lime kiln
Distance is 0.2-1.5 times of the described Lime kiln length of side；The rotary shaft of adjacent described high temperature pyrolysis fender plate is in described high-temperature hot
0.2-1.5 times that distance is described high temperature pyrolysis sole length of the vertical direction of solution stove.
System the most according to claim 1, it is characterised in that described Lime kiln baffle plate and described high temperature pyrolysis fender plate
Material be heat-resistance stainless steel；The junction of described Lime kiln baffle plate and described high temperature pyrolysis fender plate and respective place stove
It is equipped with sealing device；It is equipped with rotation drive rod in the rotating shaft of described Lime kiln and the rotating shaft of described high temperature pyrolysis stove.
System the most according to claim 1, it is characterised in that the exhanst gas outlet of described oxygen full-boiled process furnace of calcium carbide passes through high temperature cigarette
Feed channel is respectively communicated with in high-temperature flue gas pipeline described in described Lime kiln gas approach and described high temperature pyrolysis kiln gas import
Portion is provided with water-cooled flue.
System the most according to claim 1, it is characterised in that the discharging opening of described oxygen full-boiled process furnace of calcium carbide is provided with radar material position
Meter or capacitance material level meter；The agstone feeding mouth of described Lime kiln is connected with agstone speed governing batcher, described high-temperature hot
The coal dust feeding mouth solving stove is connected with coal dust speed governing batcher.
System the most according to claim 1, it is characterised in that the structure of described oxygen rifle is telescopic water cooled lance, described
The material of the lance head of oxygen rifle is copper, and the sleeve internal layer of described oxygen rifle is blowing oxygen layer, and outermost is cooling circulating water layer；Institute
The oxygen inlet connection stating blowing oxygen layer has the coal dust import connection of breeze blowing layer described in oxygen channel to have pulverized coal channel.
9. utilizing system described in any one of claim 1 to 8 to carry out a production method for carbide, described method includes step:
Agstone is sent into described Lime kiln react, obtain quick lime；
Coal dust is sent into described high temperature pyrolysis stove be pyrolyzed, obtain carbon dust；
Described quick lime is sent into described oxygen full-boiled process furnace of calcium carbide with carbon dust, makes described oxygen rifle to described oxygen full-boiled process furnace of calcium carbide winding-up oxygen
Gas, oxygen full-boiled process generates carbide；
The high-temperature flue gas that described oxygen full-boiled process furnace of calcium carbide produces is each led into described Lime kiln and described high temperature pyrolysis stove.
Method the most according to claim 9, it is characterised in that described method further comprises the steps of:
By speed governing batcher governing speed to control described agstone and the feeding amount of coal dust；
Combustible gas or oil is extracted from the pyrolysis smoke of described high temperature pyrolysis stove；
By regulating the described Lime kiln baffle plate inclination angle with described high temperature pyrolysis fender plate to control agstone and coal dust
Gliding speed；
By the regulation described agstone time of staying in described Lime kiln to control the reaction interval of described agstone
Degree；
The temperature in described reduction shaft furnace is entered to control flue gas by controlling the water yield in high-temperature flue gas pipeline；
By controlling further giving of described agstone and coal dust behind the discharging opening of described oxygen full-boiled process furnace of calcium carbide detection material position
Material speed regulates the feeding amount of agstone and coal dust, to prevent described Calx feed opening from blocking with carbon dust feed opening.
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