CN206278924U - The system for preparing calcium carbide - Google Patents
The system for preparing calcium carbide Download PDFInfo
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- CN206278924U CN206278924U CN201621269868.2U CN201621269868U CN206278924U CN 206278924 U CN206278924 U CN 206278924U CN 201621269868 U CN201621269868 U CN 201621269868U CN 206278924 U CN206278924 U CN 206278924U
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- calcium carbide
- coal
- heat
- calcium oxide
- calcium
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Abstract
The utility model provides the system for preparing calcium carbide, and the system includes：Coal pretreatment device；Calcium oxide pretreatment unit；Pyrolysis reactor, heat-insulation conveying device, and calcium carbide smelting device, wherein, pyrolysis reactor is provided with fine coal entrance, pyrolysis gas outlet and solid matter outlet, and fine coal entrance is connected with Coal pretreatment device；Heat-insulation conveying device is connected with solid matter outlet；Calcium carbide smelting device is provided with oxygen-containing gas entrance, solid material inlet, calcium carbide furnace gas outlet and calcium carbide outlet, and material inlet is connected with the heat-insulation conveying device and calcium oxide pretreatment unit.Low-order coal is raw material during the system can be used, reduce the cost of material of calcium carbide production, and can be extracted the volatile matter in middle low-order coal by pyrolytic reaction, obtain the oil gas product of high added value, use heat-insulation conveying device simultaneously, the sensible heat of thermal decomposition product can be made full use of, the energy consumption of calcium carbide production is reduced.
Description
Technical field
The system that the utility model is related to prepare calcium carbide.
Background technology
Calcium carbide can produce acetylene with water reaction, and then produce various chemicals, be important chemical raw material, be referred to as
" mother of organic synthesis ".At present, the smelting process of calcium carbide is electric arc furnaces, i.e., be raw material with block quick lime and coke,
There is reduction reaction in more than 2000 DEG C of high-temperature electric arc stove, obtain liquid calcium carbide.However, the production method exist it is following
Problem：(1) raw material must be with the semi-coke of quality block or coke as raw material, and cost of material is high；(2) block semi-coke and quick lime
Contact area is smaller, and rate of heat transfer is slow, causes reaction temperature high, and power consumption is high；(3) discharged in production process substantial amounts of waste gas,
The pollutants such as dust.Therefore, current calcium carbide production technology has the drawbacks of high temperature, highly energy-consuming, high pollution, seriously runs counter to
Country advocated " economic growth and social progress must be with good ecological environment and the natural resources of sustainable use as base
The development thought of plinth ".
Regarding to the issue above, domestic and international researchers have all done many beneficial explorations, such as pass through coal powder formation technology system
Calcium carbide is produced using electrothermal way after standby carbon raw and quick lime mixed type ball, or directly with fine coal as raw material, using oxygen heat
Method prepares calcium carbide.But directly prepare calcium carbide by raw material of coal, it is impossible to which the petroleum resources that will be rich in raw coal is extracted, and is reduced
The economy of product；Meanwhile, the oil gas product in raw coal is broken down into oil gas product during calcium carbide is produced, with furnace of calcium carbide
Gas mixes, and the treatment that calcium carbide furnace gas are increased significantly utilizes difficulty, is unfavorable for the clear production of calcium carbide.And, Electric heating
Expend substantial amounts of electric energy, high cost, and by the way of gas heat carrier heating, wherein being mixed into substantial amounts of combustion product and combustion
Heat carrier, it is impossible to obtain high-quality oil gas product, reduce value-added content of product.
Thus, the technique that calcium carbide is prepared at present still has much room for improvement.
Utility model content
The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.Therefore, this reality
It is to propose a kind of to be prepared by coal fast pyrogenation and the hot method of oxygen into the work for preparing calcium carbide that calcium carbide is combined with a new purpose
Skill.
The utility model provides a kind of system for preparing calcium carbide.According to embodiment of the present utility model, the system includes：
Coal pretreatment device；Calcium oxide pretreatment unit；Pyrolysis reactor, the pyrolysis reactor is provided with fine coal entrance, pyrolysis gas
Export and solid matter outlet, and the fine coal entrance is connected with the Coal pretreatment device；Heat-insulation conveying device, the insulation
Conveying device is connected with the solid matter outlet；Calcium carbide smelting device, the calcium carbide smelting device is provided with oxygen-containing gas and enters
Mouth, solid material inlet, calcium carbide furnace gas outlet and calcium carbide outlet, and the solid material inlet and the heat-insulation conveying device and
The calcium oxide pretreatment unit is connected.Inventor has found that the system according to the utility model embodiment can use powdery
Middle low-order coal be raw material substitution quality block semi-coke, reduce the cost of material of calcium carbide production, and can be by pyrolytic reaction
Device extracts the volatile matter in middle low-order coal, obtains the oil gas product of high added value, improves value of the product, realizes what is produced
Comprehensive utilization of resources, while the high-temp solid material that pyrolytic reaction is produced is delivered directly into calcium carbide smelting using heat-insulation conveying device
In refining device, the sensible heat of thermal decomposition product can be made full use of, reduce the energy consumption of calcium carbide production.
Alternatively, the Coal pretreatment device includes：Coal disruption elements；Coal warehouse, the coal warehouse is broken with the coal
Component is connected；First feed screw, first feed screw is connected with the coal warehouse and the fine coal entrance.
Alternatively, the calcium oxide pretreatment unit includes；Calcium oxide disruption elements；Calcium oxide warehouse, the calcium oxide
Warehouse is connected with the calcium oxide disruption elements；Second feed screw, second feed screw is stored up with the calcium oxide
Storehouse is connected with the solid material inlet.
Alternatively, multilayer heat accumulation type radiant tube, every layer of heat accumulation type radiant tube bag are provided with the pyrolysis reactor
Include multiple parallel and equally distributed heat accumulation type radiant tubes, each described heat accumulation type radiant tube and adjacent upper and lower two-layer heat accumulating type spoke
Each heat accumulation type radiant tube penetrated in pipe is parallel and short transverse of along the pyrolysis reactor is in staggered distribution.
Alternatively, the heat-insulation conveying device is heat-preserving container or insulation carrier bar.
The utility model at least has the advantages that：
1) system for preparing calcium carbide of the present utility model, uses the middle low-order coal of powdery blue for raw material substitution quality block
Charcoal, reduces the cost of material of calcium carbide production, and the carbon raw material of powdery is well mixed with the calcic raw material of powdery, and the thermal efficiency is high,
Reaction power consumption is low；
2) system for preparing calcium carbide of the present utility model, using without heat carrier heat accumulating type fast pyrolysis technology, by middle low order
Volatile matter in coal is extracted, and can obtain the oil gas product of high added value, improves value of the product；Meanwhile, because quickly
The reasonable utilization of the built-in radiation tube heater and heat accumulating type material of pyrolysis oven so that the efficiency of heating surface is higher, burn cigarette
The exhaust temperature of gas is relatively low, and thermal efficiency utilization rate is high；
3) system for preparing calcium carbide of the present utility model, the high-temp solid for producing will be pyrolyzed using sealing thermal insulation conveying device
It is delivered directly in furnace of calcium carbide, makes full use of the sensible heat of thermal decomposition product, reduces the energy consumption of calcium carbide production；
4) system for preparing calcium carbide of the present utility model, pyrolysis gas and the calcium carbide production that will be produced during coal fast pyrogenation
During the calcium carbide furnace gas that produce it is purified after can be used to smelt iron as reducing agent or as raw material prepare liquefied natural gas so that
The resource that whole process is produced reaches the purpose of comprehensive utilization；
5) middle low-order coal is carried out by upgrading by pyrolytic technique, it is possible to reduce the oxygen demand in subsequent reactions, improves product
The content of middle calcium carbide；
6) the recovered rear fuel as calcium carbide production of CO for producing calcium carbide production process, can further reduce carbon containing original
The consumption of material, reduces the cost of material and energy consumption of calcium carbide production.
Brief description of the drawings
Fig. 1 shows the structural representation of the system for preparing calcium carbide according to the utility model embodiment.
Fig. 2 shows the structural representation of the system for preparing calcium carbide according to the utility model embodiment.
Fig. 3 shows the schematic flow sheet of the method for preparing calcium carbide according to the utility model embodiment.
Specific embodiment
Embodiment of the present utility model is described below in detail.The embodiments described below is exemplary, is only used for explaining
The utility model, and it is not intended that to limitation of the present utility model.Unreceipted particular technique or condition in embodiment, according to
Technology or condition described by document in the art are carried out according to product description.Agents useful for same or the unreceipted life of instrument
Produce manufacturer person, be can by city available from conventional products.
In one side of the present utility model, the utility model provides a kind of system for preparing calcium carbide.According to this practicality
New embodiment, referring to Figures 1 and 2, the system includes：Coal pretreatment device 100；Calcium oxide pretreatment unit 200；Pyrolysis
Reactor 300, heat-insulation conveying device 400, and calcium carbide smelting device 500.
According to embodiment of the present utility model, the pyrolysis reactor 300 is provided with fine coal entrance 310, pyrolysis gas outlet
320 and solid matter outlet 330, and the fine coal entrance 310 is connected with the Coal pretreatment device 100；The insulation conveying
Device 400 is connected with the solid matter outlet 330；The calcium carbide smelting device 500 is provided with oxygen-containing gas entrance 510, consolidates
Body material inlet 520, calcium carbide furnace gas outlet 530 and calcium carbide outlet 540, and the solid material inlet 520 is defeated with the insulation
Device 400 is sent to be connected with the calcium oxide pretreatment unit 200.
According to embodiment of the present utility model, the Coal pretreatment device 100 can include：Coal disruption elements 110；Coal is stored up
Storehouse 120, the coal warehouse 120 is connected with the coal disruption elements 110；First feed screw 130, first screw feeding
Machine 130 is connected with the coal warehouse 120 and the fine coal entrance 310.Can be former by middle low-order coal using Coal pretreatment device 100
Material is crushed to granularity less than 1 millimeter, and is stored in coal warehouse 120, is then incited somebody to action in the presence of the first feed screw 130
To the fine coal with appropriate particle size be delivered to pyrolysis reactor 300 through fine coal entrance 310.In some implementations of the present utility model
In example, Coal pretreatment device 100 can further include screening component (not shown), and the screening component is arranged at coal and breaks
Between broken component 110 and coal warehouse 120, for being screened to the coal after coal disruption elements 110 are processed, will be with suitable
In the fine coal injection coal warehouse 120 of particle diameter, the larger coal raw material of particle diameter returns to coal disruption elements 110 and further carries out broken place
Reason.
According to embodiment of the present utility model, the calcium oxide pretreatment unit 200 may further include；Calcium oxide breaks
Broken component 210；Calcium oxide warehouse 220, the calcium oxide warehouse 220 is connected with the calcium oxide disruption elements 210；Second spiral
Feeder 230, second feed screw 230 is connected with the calcium oxide warehouse 220 and the solid material inlet 520.
Calcium oxide disruption elements 210 are not more than 3 millimeters for calcium oxide to be crushed into particle diameter, and the powdery calcium oxide for obtaining is stored in oxidation
In calcium warehouse 220, then by the second feed screw 230, calcium carbide smelting device is delivered to by solid material inlet 520
In 500, it is well mixed with fine coal by the powdery calcium oxide for pre-processing, the thermal efficiency is high, reaction power consumption is low.Of the present utility model
In some embodiments, calcium oxide pretreatment unit 200 may further include screening component (not shown), the screening component
It is arranged between calcium oxide disruption elements 210 and calcium oxide warehouse 220, for being sieved to the calcium oxide by break process
Choosing, by satisfactory powdery calcium oxide injection calcium oxide warehouse 220, the excessive calcium oxide of particle diameter returns to the broken group of calcium oxide
Part 210 is further crushed.
According to embodiment of the present utility model, the pyrolysis reactor 300 can be heat accumulating type descending-bed reactor, wherein
Multilayer heat accumulation type radiant tube 340 is provided with, every layer of heat accumulation type radiant tube includes multiple parallel and equally distributed heat accumulating types
Radiant tube, each described heat accumulation type radiant tube is put down with each heat accumulation type radiant tube in adjacent upper and lower two-layer heat accumulation type radiant tube
Go and the short transverse along the pyrolysis reactor 300 is in staggered distribution.Use without heat carrier heat accumulation type radiant tube, it is to avoid
Pyrolysis gas and the mixing of heat carrier, improve the quality of pyrolysis gas；The exhaust temperature of flue gas drops in the use of heat accumulation type radiant tube
As little as less than 180 DEG C, improve heat utilization efficiency.
According to embodiment of the present utility model, the system can further include pyrolysis gas processing equipment, at pyrolysis gas
The specific species of reason equipment is not particularly limited, as long as can separate tar and combustible gas, those skilled in the art can
With flexibly selection as needed.According to embodiment of the present utility model, pyrolysis gas outlet 320 further can be with heat exchanger and oil
Air separation is connected, and the heat of pyrolysis gas can be made full use of by heat exchanger, comprehensively utilizes resource, reduces energy consumption,
Combustible gas and tar separation in pyrolysis gas can be obtained high value added product by gas and oil separating plant.
According to embodiment of the present utility model, the specific species of the heat-insulation conveying device 400 is not particularly limited, as long as
Can under conditions of insulation conveying solid material, can be the conveying device of closed outside blessing insulation material.
Can be sealed thermal insulating tank or sealed thermal insulating carrier bar in some embodiments of the present utility model.Using sealed thermal insulating conveying equipment
The sensible heat of the solid material that pyrolysis obtains can be made full use of, the energy consumption of calcium carbide production process is reduced, and calcium carbide smelting process
Oxygen demand and carbon consumption.
According to embodiment of the present utility model, calcium carbide smelting device 500 can produce air flow bed for calcium carbide, be smelted in calcium carbide
In device 500, calcium carbide is prepared by the hot method of oxygen, solid material and powdery calcium oxide mix in calcium carbide production air flow bed；Meanwhile,
Part burning during the oxygen-containing gas being passed through from air flow bed downside makes pyrolysis solid product produces heat, directly heats remaining mixed
Compound, makes the temperature of mixture reach 1750-2000 DEG C and pyroreaction occurs, and produces calcium carbide and accessory substance CO.The electricity of melting
Stone by calcium carbide outlet 540 derive after through being cooled into calcium carbide product；The calcium carbide furnace gas produced in course of reaction are gone out by calcium carbide furnace gas
After mouth 530 is derived, for the preparation of SNG after purified device purification.
It is raw material substitution quality block that the system according to the utility model embodiment can use the middle low-order coal of powdery
Semi-coke, reduces the cost of material of calcium carbide production, and can extract the volatile matter in middle low-order coal by pyrolysis reactor 300
Out, the oil gas product of high added value is obtained, value of the product is improved, the comprehensive utilization of resources for producing is realized, while using insulation
Be delivered directly to the high-temp solid material that pyrolytic reaction is produced in calcium carbide smelting device 500 by conveying device 400, can be fully sharp
With the sensible heat of thermal decomposition product, the energy consumption of calcium carbide production is reduced.In addition, being smelted by by coal fast pyrogenation unit and oxidizing process calcium carbide
Unit is coupled, and unit is smelted with fine coal and powdery calcium oxide as raw material in whole pyrolysis unit and calcium carbide, not including into
Type unit, greatly reduces cost of material, it is to avoid type ball pulverizing problem present in electrothermal way calcium carbide production process, improves
The safety and stability of calcium carbide production process.
In another aspect of the present utility model, the utility model provides one kind and prepares calcium carbide using foregoing system
Method.According to embodiment of the present utility model, reference picture 3, the method is comprised the following steps：
S100：Coal is pre-processed by Coal pretreatment device 100, obtains fine coal.
According to embodiment of the present utility model, the particle diameter of the fine coal is less than 1 millimeter.Thus, carried out beneficial to pyrolytic reaction.
With fine coal as raw material, not including forming unit, cost of material is greatly reduced.
In some embodiments of the present utility model, the step may further include：Using 110 pairs of originals of coal disruption elements
Material coal carries out break process, and entering screening component by the coal of break process is screened, and fine coal of the particle diameter less than 1 millimeter is conveyed
Coal warehouse 120, feed coal of the particle diameter more than 1 millimeter returns to coal disruption elements 110 and proceeds break process, in coal warehouse 120
Fine coal pyrolysis reactor 300 is delivered to by the first feed screw 130 in carry out pyrolytic reaction.
S200：Calcium oxide is pre-processed by calcium oxide pretreatment unit 200, obtains powdery calcium oxide.
According to embodiment of the present utility model, the particle diameter of the powdery calcium oxide is less than 3 millimeters.Thus, beneficial to solid
Material is well mixed, and the thermal efficiency is high, and reaction power consumption is low.With powdery calcium oxide as raw material, not including forming unit, greatly reduce
Cost of material, it is to avoid type ball pulverizing problem present in electrothermal way calcium carbide production process, improves the peace of calcium carbide production process
Full property and stability.
In some embodiments of the present utility model, the step can be carried out according to following operation：It is broken using calcium oxide
Component 210 carries out break process to calcium oxide, and screening component is entered by the calcium oxide of break process, and particle diameter is less than 3 millimeters
Powdery calcium oxide is stored in calcium oxide warehouse 220, calcium oxide of the particle diameter more than 3 millimeters return calcium oxide disruption elements 210 after
Continuous to carry out break process, the powdery calcium oxide in calcium oxide warehouse 220 is delivered to calcium carbide and smelts by the second feed screw 230
Device 500 is preparing calcium carbide.
S300：During the fine coal added into pyrolysis reactor 300 by fine coal entrance 310, and it is set to carry out pyrolytic reaction,
Obtain solid material and pyrolysis gas.
According to embodiment of the present utility model, the temperature of the pyrolytic reaction is 550-800 degrees Celsius.Enter at such a temperature
Row pyrolytic reaction, can effectively extract the oil gas product in fine coal, obtain high value added product, improve value of the product.
According to embodiment of the present utility model, the oil gas product that pyrolytic reaction is produced can be by the row of pyrolysis gas outlet 320
Go out pyrolysis reactor, and further pass through heat exchanger, gas and oil separating plant etc. by combustible gas and tar separation, combustible gas is purified
After can be used for smelting iron or prepare liquefied natural gas etc., the resource that whole production process is produced can be comprehensively utilized.Pyrolysis
Reaction obtain high-temp solid material containing carbon amounts≤83.4%, about 500-600 DEG C of temperature, by the row of solid matter outlet 330
Go out pyrolysis reactor 300, for preparing calcium carbide.
S400：Calcium carbide is added to smelt by solid material inlet 520 solid material using heat-insulation conveying device 400
Device 500, while being added to the calcium carbide smelting device 500 by oxygen-containing gas entrance 510 and solid material inlet 520 respectively
Oxygen-containing gas and the powdery calcium oxide, and the solid material and powdery calcium oxide is reacted, obtain calcium carbide furnace gas and
Calcium carbide.
According to embodiment of the present utility model, the temperature that the solid material and powdery calcium oxide react is 1750-
2000 degrees Celsius.Thus, the yield of calcium carbide is higher, and reaction rate is very fast.
According to embodiment of the present utility model, in the calcium carbide smelting device 500, the solid material and the powdery
The mass ratio of calcium oxide can be (0.7-1.2)：1.Thus, being conducive to reaction is carried out.
According to embodiment of the present utility model, the specific species of the oxygen-containing gas of use is not particularly limited, and can be to appoint
What known oxygen-containing gas, it may for example comprise but it is not limited to oxygen-enriched air, pure oxygen or air etc..
In this step, the solid material is added into electricity by solid material inlet 520 using heat-insulation conveying device 400
Stone smelting device 500, can make full use of the sensible heat of thermal decomposition product, reduce the energy consumption of calcium carbide production.In calcium carbide smelting device 500
The calcium carbide furnace gas of generation can be obtained by that can be used to smelt iron as reducing agent after purification or prepare liquefied natural gas etc. as raw material
To comprehensive utilization.
Using the method for the present utility model, calcium carbide can quickly and efficiently be prepared as raw material with middle low order fine coal,
Cost is relatively low, and coal fast pyrogenation and the hot method of oxygen are prepared calcium carbide and be incubated conveying technology combination by high-temperature closed by the method
Get up, while the oil gas product of high added value can be obtained, improve the contact area of reactant, improve heat utilization efficiency, reduce
Production calcium carbide energy consumption, reduces the intractability of calcium carbide furnace gas, has reached comprehensive utilization of resources, has reduced cost of material and energy consumption
Purpose.
The course of work of the system and method for preparing calcium carbide of the present utility model is described below in detail.
First, feed coal addition coal disruption elements 110 are carried out into break process, after screening, powder of the particle diameter less than 1 millimeter
Coal is delivered in coal warehouse 120, and feed coal of the particle diameter more than 1 millimeter returns to coal disruption elements 110 and continue break process, meanwhile,
Calcium oxide addition calcium oxide disruption elements 210 are carried out into break process, after screening, powdery calcium oxide of the particle diameter less than 3 millimeters
Calcium oxide warehouse 220 is delivered to, calcium oxide of the particle diameter more than 3 millimeters returns to calcium oxide disruption elements and continue break process, then,
The fine coal in coal warehouse 120 is delivered to pyrolysis reactor 300 through fine coal entrance 310 using the first feed screw 130, and in
Pyrolytic reaction is carried out under 550-800 degrees Celsius, pyrolysis gas and solid material is obtained, pyrolysis gas discharge heat through pyrolysis gas outlet 320
Solution reactor 300, and further through the treatment such as heat exchanger, gas and oil separating plant, tar and combustible gas are obtained, solid material is through solid
Body material outlet 330 discharges pyrolysis reactor 300, and by heat-insulation conveying device 400, is delivered to through solid material inlet 520
Calcium carbide smelting device 500, while through oxygen-containing gas entrance 510 to oxygen-containing gas is added in calcium carbide smelting device 500, using second
Feed screw 230, through solid material inlet 520 to addition powdery calcium oxide, solid material and powder in calcium carbide smelting device 500
Shape calcium oxide is reacted in calcium carbide smelting device 500, and calcium carbide furnace gas and calcium carbide are obtained by the hot legal system of oxygen, and calcium carbide furnace gas are through electricity
The discharge of stone furnace gas export 530 calcium carbide smelting device 500, it is purified after can be used for the preparation of liquefied natural gas, or can be used to make
The fuel of standby calcium carbide, the calcium carbide of the molten state for obtaining discharges calcium carbide smelting device 500 through calcium carbide outlet 540, and electricity is obtained after cooling
Stone product.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " is meant that two or two
More than, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or two interaction relationships of element.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (5)
1. a kind of system for preparing calcium carbide, it is characterised in that including：
Coal pretreatment device；
Calcium oxide pretreatment unit；
Pyrolysis reactor, the pyrolysis reactor is provided with fine coal entrance, pyrolysis gas outlet and solid matter outlet, and the powder
Coal entrance is connected with the Coal pretreatment device；
Heat-insulation conveying device, the heat-insulation conveying device is connected with the solid matter outlet；
Calcium carbide smelting device, the calcium carbide smelting device is provided with oxygen-containing gas entrance, solid material inlet, calcium carbide furnace gas outlet
And calcium carbide is exported, and the solid material inlet is connected with the heat-insulation conveying device and the calcium oxide pretreatment unit.
2. the system for preparing calcium carbide according to claim 1, it is characterised in that the Coal pretreatment device includes：
Coal disruption elements；
Coal warehouse, the coal warehouse is connected with the coal disruption elements；
First feed screw, first feed screw is connected with the coal warehouse and the fine coal entrance.
3. the system for preparing calcium carbide according to claim 1, it is characterised in that the calcium oxide pretreatment unit includes；
Calcium oxide disruption elements；
Calcium oxide warehouse, the calcium oxide warehouse is connected with the calcium oxide disruption elements；
Second feed screw, second feed screw is connected with the calcium oxide warehouse and the solid material inlet.
4. the system for preparing calcium carbide according to claim 1, it is characterised in that be provided with multilayer in the pyrolysis reactor
Heat accumulation type radiant tube, every layer of heat accumulation type radiant tube includes multiple parallel and equally distributed heat accumulation type radiant tubes, each institute
State heat accumulation type radiant tube parallel with each heat accumulation type radiant tube in adjacent upper and lower two-layer heat accumulation type radiant tube and along described
The short transverse of pyrolysis reactor is in staggered distribution.
5. the system for preparing calcium carbide according to claim 1, it is characterised in that the heat-insulation conveying device be heat-preserving container or
Insulation carrier bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269868.2U CN206278924U (en) | 2016-11-22 | 2016-11-22 | The system for preparing calcium carbide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269868.2U CN206278924U (en) | 2016-11-22 | 2016-11-22 | The system for preparing calcium carbide |
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| Publication Number | Publication Date |
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| CN206278924U true CN206278924U (en) | 2017-06-27 |
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| CN201621269868.2U Expired - Fee Related CN206278924U (en) | 2016-11-22 | 2016-11-22 | The system for preparing calcium carbide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542532A (en) * | 2016-11-22 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | The system and method for preparing carbide |
-
2016
- 2016-11-22 CN CN201621269868.2U patent/CN206278924U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542532A (en) * | 2016-11-22 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | The system and method for preparing carbide |
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