CN106082226B - A kind of system and method for high temperature pressure ball production calcium carbide - Google Patents
A kind of system and method for high temperature pressure ball production calcium carbide Download PDFInfo
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- CN106082226B CN106082226B CN201610638772.7A CN201610638772A CN106082226B CN 106082226 B CN106082226 B CN 106082226B CN 201610638772 A CN201610638772 A CN 201610638772A CN 106082226 B CN106082226 B CN 106082226B
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- oxygen
- pyrolysis oven
- calcium carbide
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- baffle plate
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- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 88
- 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 88
- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000197 pyrolysis Methods 0.000 claims abstract description 108
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 86
- 239000001301 oxygen Substances 0.000 claims abstract description 86
- 239000002817 coal dust Substances 0.000 claims abstract description 49
- 239000003245 coal Substances 0.000 claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 35
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 32
- 235000019738 Limestone Nutrition 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000006028 limestone Substances 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 20
- 239000004571 lime Substances 0.000 claims description 17
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 16
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000003546 flue gas Substances 0.000 claims description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 5
- 239000002956 ash Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 25
- 230000035484 reaction time Effects 0.000 abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 15
- 239000000571 coke Substances 0.000 description 9
- 239000000292 calcium oxide Substances 0.000 description 8
- 235000012255 calcium oxide Nutrition 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000010891 electric arc Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 229910014813 CaC2 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
- 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process 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
- 239000003054 catalyst Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Abstract
The present invention relates to a kind of system and method for high temperature pressure ball production calcium carbide.The system includes adjustable pyrolysis oven, ball press, the hot method furnace of calcium carbide of oxygen and oxygen coal gun, wherein, adjustable pyrolysis oven includes agstone feeding mouth, coal dust feeding mouth, feed opening, smoke inlet；The baffle plate of adjustable inclination is provided with the burner hearth of adjustable pyrolysis oven, the inwall of baffle plate and the adjustable pyrolysis oven leaves gap, aperture is disposed with baffle plate；Ball press includes pulverized limestone and carbon dust entrance and feed opening；The hot method furnace of calcium carbide of oxygen includes feeding mouth, exhanst gas outlet and discharging opening；In the hot method furnace of calcium carbide of oxygen, oxygen rifle stretches into the hot method furnace of calcium carbide of oxygen the lance head of oxygen coal gun from the furnace roof of the hot method furnace of calcium carbide of oxygen.The system and method for the high temperature pressure ball production calcium carbide of the present invention, by setting the baffle plate of adjustable inclination in the adjustable pyrolysis oven, can easily control reaction time of the raw material in stove, ensure the degree and efficiency of raw material reaction.
Description
Technical field
Present invention relates generally to a kind of system and method for producing calcium carbide, and in particular to a kind of high temperature pressure ball production calcium carbide
System and method.
Background technology
Calcium carbide is commonly called as calcium carbide, is reacted and is made by coke and calcium oxide, is that important coalification chemical product and basic chemical industry are former
Material, it is mainly for the production of acetylene and ethynylation chemical product, including vinyl chloride serial, vinyl acetate series and acrylic etc.
Row product.Calcium carbide is had a very important role to Chinese national economy development, and calcium carbide yield is continuously increased nearly ten years.
Although the existing history for many years of development of calcium carbide industry, the production technology of current calcium carbide still mainly uses electric arc
The method of heating, i.e., high temperature is produced by electric arc furnaces and produce electricity stone to provide heat next life.It is to utilize electrical energy production using electric arc furnaces
Calcium carbide.Its specific production process is to be added mixture into by the entrance or pipeline of electric furnace upper end in electric furnace, raw material open or
2200 DEG C or so are heated in closed electric furnace, at high temperature reaction generation calcium carbide (calcium carbide).The calcium carbide melted, from discharging
Mouth discharge, is cooled down into calcium carbide pot.Calcium carbide is used as finished product packing after cooling down and crushing.The carbon monoxide generated in reaction is then according to electricity
The type of stone stove is discharged by different way.The shortcomings that technology is：Block coke and lime by the use of high price is needed to be used as raw material；
Generated heat using electric energy, power consumption is high, and energy consumption cost is high；Pyrolytic process is entered back into using coal dust, pulverized limestone pressure ball, in pyrolytic process
The spilling of volatile matter gas easily causes the broken of pelletizing, causes the pulverization rate of ball to increase；Because electric arc is almost in electric arc furnaces
Center, unit heat size utilization ratio is limited, yields poorly；Caused high-temperature flue gas is fewer due to measuring, and calcium carbide per ton produces
About 400m3, associated thermal energy is difficult to reclaim.
The method of the hot method production calcium carbide of oxygen is to be preheated to block calcic raw material and carbon raw material in epimere shaft furnace at present
After 800-1300 DEG C, then feed them into hypomere electric arc furnaces.It is compound with electrode by oxygen and breeze blowing burning in electric arc furnaces
Heat supply makes temperature rise to 1700-2200 DEG C, carbide raw material reaction generation high-grade calcium carbide.Caused calcium carbide furnace gas removing dust purification
Afterwards by gas turbine combustion to drive electrical power generators, waste gas sensible heat is reclaimed by waste heat boiler.The shortcomings that technology is:Need profit
Raw material is used as by the use of the block coke and lime of high price.The subject matter of the hot method of present oxygen is that do not solve existing for block material reaction
Problem, i.e., because block stock specific surface area is small so that raw material need to could be completed to react in higher temperature, thus cause system
Energy consumption is high.The raw materials for production of the hot method of oxygen remain as the higher block coke and lime stone of price at present, without effectively
Reduce cost of material.
Therefore, in order to directly using agstone and low order coal dust the production calcium carbide of low cost, and raw material can be controlled
Transporting velocity and residence time, ensure the reaction effect of raw material, it is necessary to propose production system and the side of a kind of new calcium carbide
Method.
The content of the invention
It is an object of the invention to provide a kind of system and method for high temperature pressure ball production calcium carbide so that the technique can be straight
Connect and reaction is completed in stove using powders such as agstone, coal dusts, and transporting velocity and the residence time of raw material can be controlled, to protect
Demonstrate,prove the reaction effect of raw material.
The invention provides a kind of system of high temperature pressure ball production calcium carbide, the system includes adjustable pyrolysis oven, pressure
The hot method furnace of calcium carbide of ball machine, oxygen and oxygen coal gun, wherein, the adjustable pyrolysis oven includes agstone feeding mouth, coal dust pan feeding
Mouth, pulverized limestone and carbon dust outlet, smoke inlet, the agstone feeding mouth and the coal dust feeding mouth are located at described adjustable
The top of formula pyrolysis oven, the pulverized limestone exports with carbon dust and smoke inlet is located at the bottom of the adjustable pyrolysis oven；Institute
State the baffle plate that adjustable inclination is provided with the burner hearth of adjustable pyrolysis oven, the baffle plate located at the agstone feeding mouth and
Under the coal dust feeding mouth, on the outlet of the pulverized limestone and carbon dust and the smoke inlet；The baffle plate with it is described adjustable
The inwall of section formula pyrolysis oven leaves gap, and aperture is disposed with the baffle plate；The baffle plate is by through the adjustable pyrolysis
The rotating shaft support of stove furnace wall is on the adjustable pyrolysis oven；The ball press includes pulverized limestone and carbon dust entrance and blanking
Mouthful, the pulverized limestone is connected with carbon dust entrance with the pulverized limestone of the adjustable pyrolysis oven with carbon dust outlet；The hot method of oxygen
Furnace of calcium carbide includes feeding mouth, exhanst gas outlet and discharging opening, and the feeding mouth connects the feed opening of the ball press, and the flue gas goes out
Mouth connects the smoke inlet of the adjustable pyrolysis oven；The lance head of the oxygen coal gun is located in the hot method furnace of calcium carbide of the oxygen,
The furnace roof of the oxygen coal gun from the hot method furnace of calcium carbide of the oxygen is stretched into the hot method furnace of calcium carbide of the oxygen.
Above-mentioned system, being sequentially provided with from top to bottom in the burner hearth of the adjustable pyrolysis oven multiple has the inclination angle
Baffle plate, the vertical centerline of the relatively described adjustable pyrolysis oven in inclination angle of the adjacent baffle plate is arranged symmetrically.
Above-mentioned system, the angle of the baffle plate and horizontal plane are adjustable as 30 ° -60 °；Hole diameter on the baffle plate
For 10mm-30mm.
Above-mentioned system, the adjustable pyrolysis oven are block furnace, on incline direction of the baffle plate along the inclination angle
Length be 0.5-0.95 times of the adjustable pyrolysis oven length of side, the rotary shaft of the adjacent baffle plate is described adjustable
The distance of the vertical direction of pyrolysis oven is 0.2-1.5 times of the adjustable pyrolysis oven length of side.
Above-mentioned system, the material of the baffle plate is heat-resistance stainless steel；The baffle plate and the adjustable pyrolysis oven
Junction is provided with sealing device；The rotating shaft is provided with rotation driving bar.
Above-mentioned system, the exhanst gas outlet of the hot method furnace of calcium carbide of oxygen pass through adjustable described in high-temperature flue gas pipeline communication
The gas approach of pyrolysis oven.
Above-mentioned system, the feeding mouth of the hot method furnace of calcium carbide of oxygen are provided with radar level gauge or capacitance material level meter；It is described can
The agstone feeding mouth of adjustable type pyrolysis oven is connected with agstone speed governing batcher, and the coal dust of the adjustable pyrolysis oven enters
Material mouth is connected with coal dust speed governing batcher.
Above-mentioned system, the structure of the oxygen coal gun are telescopic water cooled lance, the material of the lance head of the oxygen coal gun
For copper, the sleeve internal layer of the oxygen coal gun is breeze blowing layer, and intermediate layer is blowing oxygen layer, and outermost is cooling circulating water
Layer；The oxygen inlet of the blowing oxygen layer is connected with oxygen channel, and the coal dust import of the breeze blowing layer is connected with coal dust
Pipeline.
The invention provides a kind of production method that calcium carbide is carried out using said system, methods described includes step：By stone
Limestone flour and coal dust are sent into the adjustable pyrolysis oven and are reacted and be pyrolyzed, and obtain calcium lime powder and carbon dust；By the life
Pulverized limestone is sent into the ball press with carbon dust and carries out pressure ball；Calcium lime powder after the pressure ball and carbon dust are sent into the hot method of oxygen
Furnace of calcium carbide, the oxygen coal gun is set to divide stove coal injection and oxygen to described melt, the hot method generation calcium carbide of oxygen；By the hot method calcium carbide of the oxygen
High-temperature flue gas caused by stove is passed through the adjustable pyrolysis oven.
Above-mentioned method, methods described also include step：By speed governing batcher governing speed to control the lime stone
The feeding amount of powder and coal dust；Combustible gas or oil are extracted from the pyrolysis smoke of the adjustable pyrolysis oven；By described in regulation
The inclination angle of adjustable pyrolysis oven Internal baffle is to control the gliding speed of agstone and coal dust；By adjusting the agstone
With residence time of the coal dust in the adjustable pyrolysis oven to control the extent of reaction of the agstone；By described
The delivery rate of the agstone and coal dust is further controlled to adjust stone after the feeding mouth detection material position of the hot method furnace of calcium carbide of oxygen
The feeding amount of limestone flour and coal dust, to prevent the feed opening of the ball press from blocking.
The beneficial effects of the present invention are this technology utilization lime stone and coal dust production calcium carbide, considerably reduce former material
The cost of material.
The present invention using the coke powder after pyrolysis and calcium lime powder pressure ball under the high temperature conditions, be greatly improved pelletizing into
Type rate.
The adjustable pyrolysis oven of the present invention can easily control reaction time of the raw material in stove, it is ensured that raw material
The degree and efficiency of reaction.
In adjustable pyrolysis oven, lime promotes the pyrolytic reaction of coal, while coal dust again can produce production lime
Raw CO2It is reduced into CO so that final outlet output is fuel gas, convenient to be further used.In addition, can also be from pyrolysis
Combustible gas or oil are extracted in flue gas to produce new benefit.
Brief description of the drawings
Fig. 1 is the system architecture 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 is the A of adjustable pyrolysis oven interior panelling in Fig. 2 to structural representation.
Embodiment
Below in conjunction with drawings and examples, the embodiment of the present invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and reality
Example is applied to be for illustrative purposes only, rather than limitation of the present invention.
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing 1.The present embodiment high temperature pressure ball
Producing the production system of the calcium carbide of calcium carbide includes:1st, agstone hopper；2nd, speed governing batcher；3rd, adjustable pyrolysis oven；4、
Baffle plate；5th, ball press；6th, feed opening；7th, the hot method furnace of calcium carbide of oxygen；8th, discharging opening；9th, oxygen coal gun；10th, oxygen channel；11st, coal pipe
Road；12nd, high-temperature flue gas pipeline；13rd, discharge duct；14th, speed governing batcher；15th, coal dust hopper.Wherein, agstone hopper 1,
Coal dust hopper 15, speed governing batcher 2 and 14 etc. can set or be replaced by other devices according to being actually needed.
The adjustable pyrolysis oven 3 includes agstone feeding mouth, coal dust feeding mouth, pulverized limestone and carbon dust outlet, cigarette
Gas entrance, the agstone feeding mouth and the coal dust feeding mouth are located at the top of the adjustable pyrolysis oven 3, the stone
Ashes exports with carbon dust and smoke inlet is located at the bottom of the adjustable pyrolysis oven 3；
The baffle plate 4 of adjustable inclination is provided with the burner hearth of the adjustable pyrolysis oven 3, the baffle plate 4 is located at the stone
Under limestone flour feeding mouth and the coal dust feeding mouth, on the feed opening and the smoke inlet.The baffle plate 4 with it is described
The inwall of adjustable pyrolysis oven 3 leaves gap, and aperture is disposed with the baffle plate 4.The baffle plate 4 through described by can adjust
The rotating shaft 41 of the furnace wall of formula pyrolysis oven 3 is supported on the adjustable pyrolysis oven 3.
The ball press 5 includes pulverized limestone and carbon dust entrance and feed opening 6, the pulverized limestone and carbon dust entrance with it is described can
The pulverized limestone of adjustable type pyrolysis oven 3 is connected with carbon dust outlet.
The hot method furnace of calcium carbide 7 of oxygen includes feeding mouth, exhanst gas outlet and discharging opening 8, and the feeding mouth connects the pressure ball
The feed opening 6 of machine 5, the exhanst gas outlet connect the smoke inlet of the adjustable pyrolysis oven 3.
For the lance head of the oxygen coal gun 9 in the hot method furnace of calcium carbide 7 of the oxygen, the oxygen coal gun 9 is electric from the hot method of the oxygen
The furnace roof of stone stove 7 is stretched into the hot method furnace of calcium carbide 7 of the oxygen.
Multiple baffle plates 4 with the inclination angle, phase are sequentially provided with the burner hearth of the adjustable pyrolysis oven 3 from top to bottom
The vertical centerline of the relatively described adjustable pyrolysis oven 3 in inclination angle of the adjacent baffle plate 4 is arranged symmetrically.
0-1mm agstone and 0-2mm coal dust are by arriving adjustable heat in hopper under closed speed governing batcher
Stove 3 is solved, speed governing batcher 2,14 may be designed as spiral speed regulation batcher, ensure the adjustable He of pyrolysis oven 3 while feed
Sealing between raw material hopper.
The delivery rate of batcher controls according to the reaction speed in the hot method furnace of calcium carbide 7 of oxygen, and reaction speed is very fast, feed speed
Degree increase, it is on the contrary then reduce.
The ratio of agstone and coal dust controls according to the constituent adjustment of product, if CaO content is high in calcium carbide, increases
Add the ratio of carbon, it is on the contrary then reduce.
The speed that material declines can be controlled by the angle of baffle plate 4, and angle is big, and decrease speed is fast, and residing time in furnace is short；Angle
Spend small, decrease speed is slow, residing time in furnace length.The foundation of regulation can depending on the outlet temperature of the hot method furnace of calcium carbide 7 of oxygen, one
As outlet temperature between 1500 DEG C -1100 DEG C.Outlet temperature is high, and the residence time is short, and the on the contrary then residence time is grown.
The design principle of baffle plate 4 is the most long principle in material path, while is ensured again to the cigarette in adjustable pyrolysis oven 3
Atmidometer can not be too big.
According to above principle, while according to the coefficient of friction of baffle plate 4 and raw material powder, for the pyrolysis oven of square, design
Length on incline direction of the baffle plate 4 along the inclination angle is 0.5-0.95 times, preferably 0.75 times or so of the pyrolysis oven length of side.Phase
Difference in height between the rotary shaft of adjacent baffle plate is 0.2-1.5 times, preferably 0.5 times or so of the pyrolysis oven length of side.Baffle plate 4 and level
The adjustable range of the angle in face is defined as 30 ° -60 °.Shown in the structure and size as Fig. 2 and Fig. 3 of instantiation.It is specific in figure
Structure and size are exemplary illustration.Certain pyrolysis oven can also be other shape such as circle.When pyrolysis oven is other shape,
And can not be too big to the flue gas resistance in direct pyrolysis oven according to the most long principle in material path and consideration, to design the knot of baffle plate
Structure and arrangement form.
For example, when the angle of baffle plate 4 and horizontal plane is 36 °, the total distance of stream is 2.1 times of left sides of pyrolysis oven height
It is right.Due to frictional force and the influence of collision, material falls becomes the reciprocal downglide motion of low speed by the movement of falling object, with whole process
Compared for the situation (being not provided with baffle plate) of free-falling, raw material powder fall time is 5-12 times of free-fall time.Have above
Body parameter can make the appropriate adjustments according to the particle size range of the wind speed in pyrolysis oven and raw material powder.The material of baffle plate 4 is heat-resisting stainless
Steel.Baffle arrangement has diameter 10mm-30mm aperture, and high-temperature gas is by flowing through aperture and pyrolysis oven and baffle plate below pyrolysis oven
Gap between 4 flows up, to ensure contact of the raw material powder with high-temperature gas.
Baffle plate 4 has the rotating shaft 41 that can make baffle plate activity and the sealing device between adjustable pyrolysis oven 3.Can be
Reinforcement 42 is set on baffle plate 4 to ensure the intensity of baffle plate 4 and rigidity.The rotation of baffle plate 4 can hand-turning also machine drive,
Rotation driving bar 43 can be designed with baffle plate 4.
High-temperature gas reverse flow in raw material powder and adjustable pyrolysis oven 3.Agstone reacts under the high temperature conditions
Generate CaO and CO2, coal dust occurs pyrolytic reaction, generates coke and pyrolysis gas at high temperature.Pulverized limestone promotees as catalyst simultaneously
Enter the pyrolysis of coal.Pyrogenous origin gas is discharged with high-temperature flue gas, into post-processing system.Pyrogenic steam caused by pyrolysis passes through
Cross condensation, purification obtains oil, the gas product of high-quality.CaO and carbon dust enter ball press 5 under the high temperature conditions, after pressure ball molding,
Reaction generation calcium carbide in into oxidizing process furnace of calcium carbide 7.The heat that reaction needs is provided by oxygen coal gun 9.
Raw material powder progressively fractional order reaction, passes through regulation during being fallen from the adjustable top of pyrolysis oven 3 to bottom
Residence time in adjustable pyrolysis oven 3 is to control the extent of reaction.The extent of reaction in the adjustable exit of pyrolysis oven 3 can
Reach 95% or so.
The feeding mouth of the hot method furnace of calcium carbide 7 of oxygen is by setting the facility such as radar level gauge or capacitance material level meter to sense blanking feelings
Condition, prevent feed opening 6 from blocking.If it find that feed opening 6 gathers materials too much, blanking is reduced by controlling the delivery rate on top
Amount, prevents from blocking.
The structure of oxygen coal gun 9 is telescopic water cooled lance, wherein, middle coal injection, outside is oxygen, and outermost is cold
But recirculated water, oxygen coal coal pipette tips portion material is copper lance head.
In the hot method furnace of calcium carbide 7 of oxygen, control in-furnace temperature is in suitable interval, while coal dust and oxygen reaction generate CO, profit
Furnace of calcium carbide top is formed foamed slag with the CO and portion of flux of generation, the lime of ball is not pressed into using foamed slag catching portion
Powder and carbon dust.The calcium carbide of formation is discharged in calcium carbide pot by discharging opening 8 and cooled down.The burning of oxygen coal gun 9, which provides heat and reaction, to be needed
Temperature, reaction generation calcium carbide after carbon dust and CaO pressure balls.Arranged after having reacted by the discontinuity of discharging opening 8 of the hot method furnace of calcium carbide 7 of oxygen
Go out calcium carbide.
The present invention can utilize agstone and coal dust production calcium carbide, considerably reduce the cost of raw material.
The adjustable pyrolysis oven 3 of the present invention can easily control reaction time of the raw material in stove, it is ensured that former
Expect the degree and efficiency of reaction.
The present invention utilizes the coke powder after pyrolysis and pulverized limestone pressure ball under the high temperature conditions, and the shaping of pelletizing is greatly improved
Rate.
In the adjustable pyrolysis oven of the present invention, lime promotes the pyrolytic reaction of coal, while coal dust again can be life
Produce CO caused by lime2It is reduced into CO so that final outlet output is fuel gas, convenient to be further used.In addition, also
Combustible gas or oil can be extracted from pyrolysis smoke to produce new benefit.
The present invention can extract combustible gas from pyrolysis smoke or oil produces new benefit.
Embodiment
Agstone and coal dust are respectively put into hopper 1 and hopper 15 first, pass through the speed governing batcher 2 and batcher of bottom
14, it is sent into adjustable pyrolysis oven 3 according to certain ratio and speed.
Powder glides in adjustable pyrolysis oven 3 along baffle plate 4, while is reacted under conditions of high-temperature flue gas, lime
Stone flour reacts generation CaO and CO under the high temperature conditions2.Pyrolytic reaction occurs at high temperature for coal dust, generates coke and pyrolysis gas.It is raw
Into gas discharged with high-temperature flue gas from discharge duct 13, into post-processing system.Carbon dust and quick lime are pressed into ball press 5
Ball forming, the reaction generation calcium carbide of furnace of calcium carbide 7 is then entered by charging aperture 6.
Oxygen, coal dust enter oxygen coal gun 9 by oxygen channel 10 and pulverized coal channel 11, are burnt in the hot method furnace of calcium carbide 7 of oxygen
Heat and high temperature are produced, under the high temperature conditions, pelletizing reaction generation calcium carbide, is intermittently excluded by discharging opening 8.It is high caused by reaction
Warm flue gas enters adjustable pyrolysis oven by pipeline 12, and heat is provided for pulverized coal pyrolysis and lime stone reaction.
It is specifically described step by step below.
Agstone is put into hopper 1 first.Limestone granularity scope is 0-1mm.By the adjustable high temperature of pyrolysis oven 3
Calcium lime powder, calcium lime powder composition such as following table are generated after reaction：
Table 1
Coal dust is put into hopper 15, coal powder size 0-2mm, the composition such as following table of coal dust：
Table 2
| Composition, % | Fixed carbon | Fugitive constituent | Ash content | S |
| Coal dust | 65~75 | 20~25 | 7~10 | 0.2~0.3 |
Coal dust is pyrolyzed under the hot environment of adjustable pyrolysis oven 3, generates coke and pyrolysis gas, coke composition are as follows
Table：
Table 3
| Composition, % | Mad | Aad | Vad | FCad |
| Carbon dust | 0.50 | 7.55 | 5.08 | 86.87 |
Coke and pulverized limestone enter ball press pressure ball 5, subsequently into the hot method furnace of calcium carbide 7 of oxygen, are burnt and provided by oxygen coal gun 9
Heat, control in-furnace temperature is between 2000 DEG C -2200 DEG C.Simultaneously carbon dust and oxygen reaction generation CO, using generation CO and
Portion of flux makes furnace of calcium carbide top form foamed slag, and the calcium lime powder and carbon dust for not being pressed into ball are caught using foamed slag.Formed
Calcium carbide be discharged in calcium carbide pot and cool down by discharging opening 8.Calcium carbide composition such as following table：
Table 4
| Composition | CaC2 | CaO | SiO2 | MgO | Fe2O3+Al2O3 | C |
| Content % | 85.3 | 9.5 | 2.1 | 0.35 | 1.45 | 1.2 |
The flue gas exit temperature of the hot method furnace of calcium carbide 7 of oxygen is controlled at 1500 DEG C or so, the outlet temperature of adjustable pyrolysis oven 3
For 800 DEG C or so.
Wherein, the M in table 3adRepresent air-dried moisture；AadRepresent and dry base ash content；VadAir-dried basis is represented to wave
Hair point；FCadRepresent air-dried basis fixed carbon.
As seen from the above-described embodiment, agstone and coal dust effectively can be generated calcium carbide by technical scheme.
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, 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 (9)
1. a kind of system of high temperature pressure ball production calcium carbide, the system include adjustable pyrolysis oven, ball press, the hot method calcium carbide of oxygen
Stove and oxygen coal gun, wherein,
The adjustable pyrolysis oven includes agstone feeding mouth, coal dust feeding mouth, pulverized limestone and carbon dust outlet, flue gas and entered
Mouthful, the agstone feeding mouth and the coal dust feeding mouth are located at the top of the adjustable pyrolysis oven, the pulverized limestone
The bottom of the adjustable pyrolysis oven is located at carbon dust outlet and smoke inlet；Set in the burner hearth of the adjustable pyrolysis oven
There is the baffle plate of adjustable inclination, the baffle plate is under the agstone feeding mouth and the coal dust feeding mouth, the stone
On ashes and carbon dust outlet and the smoke inlet；The inwall of the baffle plate and the adjustable pyrolysis oven leaves gap,
Aperture is disposed with the baffle plate；The baffle plate is by the rotating shaft support through the adjustable pyrolysis oven furnace wall in described adjustable
On section formula pyrolysis oven；
The ball press includes pulverized limestone and carbon dust entrance and feed opening, the pulverized limestone and carbon dust entrance with it is described adjustable
The pulverized limestone of pyrolysis oven is connected with carbon dust outlet；
The hot method furnace of calcium carbide of oxygen includes feeding mouth, exhanst gas outlet and discharging opening, and the feeding mouth is connected under the ball press
Material mouth, the exhanst gas outlet connect the smoke inlet of the adjustable pyrolysis oven；
The lance head of the oxygen coal gun is in the hot method furnace of calcium carbide of the oxygen, stove of the oxygen coal gun from the hot method furnace of calcium carbide of the oxygen
Top is stretched into the hot method furnace of calcium carbide of the oxygen.
2. system according to claim 1, it is characterised in that in the burner hearth of the adjustable pyrolysis oven from top to bottom according to
It is secondary to be provided with multiple baffle plates with the inclination angle, the relatively described adjustable pyrolysis oven in inclination angle of the adjacent baffle plate it is vertical in
Heart line is arranged symmetrically.
3. system according to claim 1, it is characterised in that the angle of the baffle plate and horizontal plane be adjustable as 30 °-
60°；Hole diameter on the baffle plate is 10mm-30mm.
4. system according to claim 1, it is characterised in that the adjustable pyrolysis oven is block furnace, the baffle plate
Along 0.5-0.95 times that the length on the incline direction at the inclination angle is the adjustable pyrolysis oven length of side, the adjacent baffle plate
Rotary shaft the adjustable pyrolysis oven vertical direction distance be the adjustable pyrolysis oven length of side 0.2-1.5
Times.
5. system according to claim 1, it is characterised in that the material of the baffle plate is heat-resistance stainless steel；The baffle plate
Sealing device is provided with the junction of the adjustable pyrolysis oven；The rotating shaft is provided with rotation driving bar.
6. system according to claim 1, it is characterised in that the feeding mouth of the hot method furnace of calcium carbide of oxygen is provided with radar material position
Meter or capacitance material level meter；The agstone feeding mouth of the adjustable pyrolysis oven is connected with agstone speed governing batcher, described
The coal dust feeding mouth of adjustable pyrolysis oven is connected with coal dust speed governing batcher.
7. system according to claim 1, it is characterised in that the structure of the oxygen coal gun is telescopic water cooled lance, institute
The material for stating the lance head of oxygen coal gun is copper, and the sleeve internal layer of the oxygen coal gun is breeze blowing layer, and intermediate layer is blowing oxygen
Layer, outermost is cooling circulating water layer；The oxygen inlet of the blowing oxygen layer is connected with oxygen channel, the breeze blowing layer
Coal dust import be connected with pulverized coal channel.
8. a kind of method using any one of claim 1 to the 7 system production calcium carbide, methods described includes step：
Agstone and the coal dust feeding adjustable pyrolysis oven are reacted and be pyrolyzed, obtains calcium lime powder and carbon dust；
The calcium lime powder and carbon dust are sent into the ball press and carry out pressure ball；
Calcium lime powder after the pressure ball and carbon dust are sent into the hot method furnace of calcium carbide of oxygen, make the oxygen coal gun to the hot method of the oxygen
Furnace of calcium carbide coal injection and oxygen, the hot method generation calcium carbide of oxygen；
High-temperature flue gas caused by the hot method furnace of calcium carbide of the oxygen is passed through the adjustable pyrolysis oven.
9. according to the method for claim 8, it is characterised in that methods described also includes step：
By speed governing batcher governing speed to control the feeding amount of the agstone and coal dust；
Combustible gas or oil are extracted from the pyrolysis smoke of the adjustable pyrolysis oven；By adjusting the adjustable pyrolysis oven
The inclination angle of Internal baffle is to control the gliding speed of agstone and coal dust；
By adjusting the residence time of the agstone and coal dust in the adjustable pyrolysis oven to control the lime
The extent of reaction of stone flour；
By the feeding mouth of the hot method furnace of calcium carbide of the oxygen detect material position after further control the agstone and coal dust to
Speed is expected to adjust the feeding amount of agstone and coal dust, to prevent the feed opening of the ball press from blocking.
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| US2950956A (en) * | 1957-03-27 | 1960-08-30 | Texaco Inc | Process for production of calcium carbide and hydrogen |
| CN203307054U (en) * | 2013-05-30 | 2013-11-27 | 石家庄新华能源环保科技股份有限公司 | Device for producing calcium carbides by adopting oxygen heat method |
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