CN104843707B - Furnace of calcium carbide and the method that calcium carbide is prepared using the furnace of calcium carbide - Google Patents
Furnace of calcium carbide and the method that calcium carbide is prepared using the furnace of calcium carbide Download PDFInfo
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- CN104843707B CN104843707B CN201510188620.7A CN201510188620A CN104843707B CN 104843707 B CN104843707 B CN 104843707B CN 201510188620 A CN201510188620 A CN 201510188620A CN 104843707 B CN104843707 B CN 104843707B
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Abstract
The method that the present invention is proposed furnace of calcium carbide and calcium carbide is prepared using the furnace of calcium carbide, wherein, furnace of calcium carbide includes：Being pyrolyzed in shaft, EAF bottom, pelletizing material inlet, pyrolysis gas outlet and carbide liquid outlet, pyrolysis shaft has pyrolysis chamber；There is EAF bottom calcium carbide to produce chamber, and EAF bottom has heater, and the top of EAF bottom is connected with being pyrolyzed the lower end of shaft, and chamber is produced with calcium carbide to be pyrolyzed chamber；Pelletizing material inlet is located at the top of pyrolysis shaft, to add the pelletizing material containing fine coal and lime into pyrolysis chamber from the top of pyrolysis shaft；Pyrolysis gas outlet is located at the top of pyrolysis shaft, and carbide liquid exports the bottom for being located at EAF bottom.Energy consumption can be significantly reduced using the furnace of calcium carbide, raising prepares calcium carbide efficiency.
Description
Technical field
The invention belongs to calcium carbide production field, specifically, electricity is prepared the present invention relates to furnace of calcium carbide and using the furnace of calcium carbide
The method of stone.
Background technology
With the development of modern industry, calcium carbide industry is closely connected with organic synthesis industry, particularly PVC Industry,
PVC (polyvinyl chloride) productions of China more than 70% come from carbide acetylene.Due to Market Reasons, calcium carbide sale is affected, because
How this, which reduces calcium carbide production cost, turns into the bottleneck that calcium carbide industry develops.
Current tradition calcium carbide production technology, the production of calcium carbide is always using the granular quick lime of block and carbon materials 2000
The generation calcium carbide of reaction more than DEG C, high energy consumption, high cost, and high energy consumption is due to that block stock specific surface area is small so that need compared with
High-temperature could complete reaction.There is studies have shown that to reduce raw material granularity, calcium carbide smelting temperature can be reduced to 1700 DEG C or so.Cause
This, the reduction of raw material particle size advantageously reduces reaction temperature, reduces energy consumption.Meanwhile, traditional calcium carbide process selection quality block is blue
Charcoal and lime, powdery semi-coke and lime have to handle at a low price, indirectly increase calcium carbide production cost.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is a kind of method for proposing furnace of calcium carbide and calcium carbide being prepared using the furnace of calcium carbide.
According to an aspect of the present invention, the present invention proposes a kind of furnace of calcium carbide, including:
Being pyrolyzed in shaft, the pyrolysis shaft has pyrolysis chamber；
There is EAF bottom, the EAF bottom calcium carbide to produce chamber, and the EAF bottom has heater, the electricity
The top of stove furnace bottom is connected with the lower end of the pyrolysis shaft, so that the pyrolysis chamber and the calcium carbide produce chamber；
Pelletizing material inlet, the pelletizing material inlet is located at the top of the pyrolysis shaft, so as to from the pyrolysis oven
The top of body adds the pelletizing material containing fine coal and lime into the pyrolysis chamber；
Pyrolysis gas outlet, the pyrolysis gas outlet is located at the top of the pyrolysis shaft,
Carbide liquid is exported, and the carbide liquid outlet is located at the bottom of the EAF bottom.
Thus, the furnace of calcium carbide of the above embodiment of the present invention has a pyrolysis shaft and EAF bottom two sections, and then by heat
Solve technique to organically combine in a set of system for producing calcium carbide with calcium carbide production technology, realize the integration of equipment.Wherein epimere
The pyrolysis chamber of shaft and the calcium carbide production chamber of hypomere EAF bottom are pyrolyzed, it is possible thereby to utilize the calcium carbide positioned at hypomere
Produce the high-temperature tail gas produced in chamber and pyrolysis processing is carried out to the calcium carbide raw materials for production in pyrolysis chamber, realize tail gas heat quantity
Utilize, improve the overall thermal efficiency.In addition, carrying the high-temp solid material of a large amount of sensible heats in pyrolysis chamber, calcium carbide life is directly entered
Produce in chamber, distance is short, heat loss is small, it is possible thereby to effectively reduction calcium carbide section energy consumption, and improve the integrated artistic thermal efficiency.
In addition, furnace of calcium carbide according to the above embodiment of the present invention can also have technical characteristic additional as follows：
In some embodiments of the invention, the heater is three-phase electrode.
In some embodiments of the invention, carbide liquid outlet includes multiple, and the multiple carbide liquid is exported along footpath
It is oppositely arranged upwards.
In some embodiments of the invention, the pyrolysis shaft is connected with the EAF bottom by excessive portion, described
Direction of the diameter in excessive portion along charging first reduces to increase afterwards.
According to the second aspect of the invention, the invention also provides a kind of method that utilization furnace of calcium carbide prepares calcium carbide, including：
Add the pelletizing material containing fine coal and lime, make described into the furnace of calcium carbide from the pelletizing material inlet
It is pyrolyzed the filling pelletizing material in chamber and calcium carbide production chamber；
Start the heater to heat the pelletizing material in calcium carbide production chamber and occur calcium carbide
Reaction is smelted, to obtain carbide liquid and to produce high-temperature tail gas；
Make the high-temperature tail gas be upwardly into the pyrolysis chamber to carry out the pelletizing material in the pyrolysis chamber
Pyrolysis processing；And
Make the carbide liquid export from the carbide liquid to discharge；
In some embodiments of the invention, the temperature of the high-temperature tail gas is 600-1000 degrees Celsius.
In some embodiments of the invention, it is that 5-30 is carried out under 1750-2200 degrees Celsius that the calcium carbide, which smelts reaction,
Minute completes.
In some embodiments of the invention, the calcium carbide smelt reaction be carried out under 1900 degrees Celsius 12 minutes it is complete
Into.
In some embodiments of the invention, the fine coal in the pelletizing material containing fine coal and lime is low in powdery
Rank raw coal.
In some embodiments of the invention, the average grain diameter of the fine coal and lime is no more than 20 microns.
Brief description of the drawings
Fig. 1 is the structural representation of furnace of calcium carbide according to an embodiment of the invention.
Embodiment
The furnace of calcium carbide of the embodiment of the present invention is described in detail below with reference to Fig. 1.
Furnace of calcium carbide according to embodiments of the present invention is specifically included：It is pyrolyzed shaft 10, EAF bottom 20, pelletizing material inlet
30th, pyrolysis gas outlet 40 and carbide liquid outlet 50, wherein, there is pyrolysis chamber 11 in pyrolysis shaft 10；EAF bottom 20 has
Calcium carbide produces chamber 21, and EAF bottom 20 has heater 22, the top of EAF bottom 20 and the lower end phase for being pyrolyzed shaft 10
Even, connected to be pyrolyzed chamber 11 with calcium carbide production chamber 21；Pelletizing material inlet 30 is located at the top of pyrolysis shaft 10, so as to
From the top of pyrolysis shaft 10 the pelletizing material containing fine coal and lime is added into pyrolysis chamber 11；Pyrolysis gas outlet 40 is located at
The top of shaft 10 is pyrolyzed, carbide liquid outlet 50 is located at the bottom of EAF bottom 20.
Thus, the furnace of calcium carbide of the above embodiment of the present invention has pyrolysis shaft 10 and the two sections of EAF bottom 20, and then
Pyrolytic process and calcium carbide production technology are organically combined in a set of system for producing calcium carbide, the integration of equipment is realized.Wherein
The pyrolysis chamber 11 of epimere pyrolysis shaft 10 is connected with the calcium carbide production chamber 21 of hypomere EAF bottom 20, it is possible thereby to utilize position
The calcium carbide raw materials for production in pyrolysis chamber 11 are carried out at pyrolysis in the high-temperature tail gas produced in the calcium carbide production chamber 21 of hypomere
Reason, realizes tail gas heat quantity utilization, improves the overall thermal efficiency.In addition, carrying the high-temp solid of a large amount of sensible heats in pyrolysis chamber 11
Material, is directly entered in calcium carbide production chamber 21, distance is short, heat loss is small, it is possible thereby to effectively reduction calcium carbide section energy consumption, and carrying
The high integrated artistic thermal efficiency.
According to a particular embodiment of the invention, the heater 22 in above-mentioned EAF bottom 20 can be three-phase electrode.By
This can improve the efficiency of heating surface.According to a particular embodiment of the invention, it is anti-due to entering generation calcium carbide in calcium carbide production chamber 21
The raw material answered be by pyrolysis chamber 11 be pyrolyzed after, it is possible thereby to further reduction EAF bottom 20 in energy consumption, will be traditional
The required 2000 degree Celsius temperatures above of production calcium carbide can be down to 1750 degrees Celsius.
According to a particular embodiment of the invention, positioned at the bottom of EAF bottom 20 carbide liquid outlet 50 can include it is multiple,
It is oppositely arranged in multiple carbide liquid outlets radially.It is possible thereby to improve the efficiency of discharge calcium carbide.
According to a particular embodiment of the invention, pyrolysis shaft is connected with the EAF bottom by excessive portion, described excessive
Direction of the diameter in portion along charging first reduces to increase afterwards.It is possible thereby to which controlling the material after pyrolysis to enter calcium carbide produces chamber 21
Speed.Because in calcium carbide production chamber, each of three electrodes central region temperature highest, material is most fast in middle part blanking velocity, therefore
Direction of the excessive portion diameter along charging first reduces to increase afterwards, on the one hand can control speed of the material into calcium carbide chamber after pyrolysis
Degree；On the other hand, it can to feed in the middle part of material after pyrolysis, material is directly entered high-temperature region, reacted, and weakens body of heater side
Along effect.
According to another aspect of the present invention, the invention also provides a kind of side that calcium carbide is prepared using furnace of calcium carbide noted earlier
Method.According to a particular embodiment of the invention, this method includes：Added from pelletizing material inlet into furnace of calcium carbide will containing fine coal and
The pelletizing material of lime, makes pyrolysis chamber and calcium carbide produce filling pelletizing material in chamber；Start heater to produce calcium carbide
Pelletizing material in chamber, which is heated and occurs calcium carbide, smelts reaction, to obtain carbide liquid and to produce high-temperature tail gas；Make height
Warm tail gas is upwardly into pyrolysis chamber and carries out pyrolysis processing to the pelletizing material in pyrolysis chamber；And make carbide liquid from carbide liquid
Outlet discharge.
Thus, the method for preparing calcium carbide of the above embodiment of the present invention is had pyrolytic process with calcium carbide production technology
Machine is combined, and realizes the serialization of technique.Wherein take full advantage of calcium carbide and smelt the high-temperature tail gas produced to calcium carbide raw materials for production
Pyrolysis processing is carried out, tail gas heat quantity complete utilization is realized, the overall thermal efficiency is improved.In addition, carrying the height of a large amount of sensible heats after pyrolysis
Warm solid material, is directly entered in calcium carbide production chamber and is smelted, distance is short, heat loss is small, it is possible thereby to effectively reduction electricity
Stone section energy consumption, and improve the integrated artistic thermal efficiency.
According to a particular embodiment of the invention, the temperature of the high-temperature tail gas produced in calcium carbide production chamber is taken the photograph for 600-1000
Family name's degree.Thus the high-temperature flue gas is made full use of to carry out pyrolysis processing to the pelletizing material before calcium carbide reaction.According to the tool of the present invention
Body embodiment, using above-mentioned high-temperature flue gas to pelletizing material carry out pyrolysis processing, can obtain artificial petroleum, artificial natural gas and
Solid product is pyrolyzed, wherein, pyrolysis solid product contains one kind in quick lime and coke, semicoke, carbon black.Thus pyrolytic process
So that carbon-based raw material and calcium based raw material contact it is even closer, advantageously in reduction subsequent smelting temperature and the duration of heat,
And then significantly reduce energy consumption.
According to a particular embodiment of the invention, it is that 5-30 is carried out under 1750-2200 degrees Celsius that above-mentioned calcium carbide, which smelts reaction,
Minute completes.It is possible thereby to which the temperature of calcium carbide reaction can be significantly reduced by preparing calcium carbide using the furnace of calcium carbide of the above embodiment of the present invention
Degree, shortens the reaction time, and then saves energy consumption.Preferably, calcium carbide smelt reaction be under 1900 degrees Celsius carry out 12 minutes it is complete
Into.
According to a particular embodiment of the invention, the fine coal in the pelletizing material containing fine coal and lime is low in powdery
Rank raw coal.It is possible thereby to make full use of the middle low order raw coal of powdery, and then cost of material can be reduced.
According to a particular embodiment of the invention, the average grain diameter of the fine coal and lime is not more than 20 microns, thus, by powder
The carbon-based raw material of shape and calcium based raw material mixed-forming, have been significantly greatly increased the contact area of two kinds of raw materials so that calcium carbide smelting temperature is big
Amplitude reduction.According to a particular embodiment of the invention, by choosing the carbon-based raw material of powdery and calcium base that average grain diameter is 10 microns
The temperature of metallurgy can be down to 1750 degrees Celsius by raw material.More traditional smelting temperature for preparing calcium carbide is 2000~2200
Degree Celsius significantly reduce energy consumption.
In addition, in advance pelletizing material is made in the carbon-based raw material of powdery and calcium based raw material by the present invention, and then discharge can make it that
The outer gas of stove is substantially without dust, while raw material carries out pyrolytic reaction in pyrolysis section, heat comes from the calcium carbide reaction end gas of hypomere,
The pure, tolerance of integrated artistic gaseous product composition is relatively fewer, economy is high, and subsequent purification unit burden is smaller.
Embodiment
The present invention is a kind of furnace of calcium carbide for being combined pyrolysis of coal with calcium carbide smelting, and main body is divided into two sections：Epimere is
Pyrolysis section, hypomere is that calcium carbide produces section.
Epimere：Provided with pelletizing material inlet and pyrolysis gas outlet.After fine coal is molded according to a certain percentage with lime, pelletizing thing
Expect that pelletizing material is moved down in stove with Action of Gravity Field as the opening and closing of pelletizing material inlet enters in epimere pyrolysis chamber.
Destructive distillation thermal source comes from 900 DEG C or so high-temperature tail gas produced by hypomere calcium carbide production section, the coal gas that the pyrolysis of pelletizing material is produced
Discharged by the gas exit at the top of two-stage furnace, coal gas is by pelletizing material preheating zone, and coal gas of high temperature is pre- by pelletizing material
Heat, while pelletizing material is produced from filtration to dust in coal gas.
Hypomere：Hot solids product after pyrolysis enters hypomere calcium carbide and produces section, and calcium carbide production section uses three-phase electrode, produced
Open arc heats raw material, and calcium carbide reaction of formation, 12 minutes reaction time, high-temperature tail gas can occur under 1900 degree celsius temperatures for raw material
Upwards as pyrolysis section thermal source, liquid calcium carbide product is discharged by bottom discharging opening liquid.Produce one ton of consumption of calcium carbide electric power
2850kwh, the time used, outflow needed 25~50min from charging to carbide liquid.
Two-part furnace of calcium carbide, pyrolytic process and calcium carbide production technology are organically combined, and realize all profits of powder raw material
With powdery carbon materials is combined with lime, and effective contact area is significantly greatly increased, and reduces calcium carbide reaction temperature, and can obtain
Obtain by-product coke oil and gas.Solid product carries a large amount of sensible heats after pyrolysis, and into hypomere furnace of calcium carbide, calcium carbide can be greatly reduced
Stove energy consumption.Therefore two-part furnace of calcium carbide production calcium carbide, furnace of calcium carbide energy consumption and production cost can be greatly lowered.
In traditional calcium carbide production technology, production ton calcium carbide power consumption is 3200kwh, and the production ton calcium carbide time is 40~60
Minute, and above-mentioned two-part furnace of calcium carbide is used, production ton calcium carbide power consumption is 2850kwh, reduces power consumption 350kwh, production electricity
The stone time is 25~50min.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, 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 the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is 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 the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be any
Combined in an appropriate manner in individual or multiple embodiments or example.In addition, in the case of not conflicting, the technology of this area
Not be the same as Example or the feature of example and non-be the same as Example or example described in this specification can be combined by personnel
And combination.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (6)
1. the method for calcium carbide is prepared using furnace of calcium carbide, it is characterised in that the furnace of calcium carbide includes：
Being pyrolyzed in shaft, the pyrolysis shaft has pyrolysis chamber；
There is EAF bottom, the EAF bottom calcium carbide to produce chamber, and the EAF bottom has heater, the electric furnace
The top at bottom is connected with the lower end of the pyrolysis shaft, so that the pyrolysis chamber and the calcium carbide produce chamber；
Pelletizing material inlet, the pelletizing material inlet is located at the top of the pyrolysis shaft, so as to from the pyrolysis shaft
Top adds the pelletizing material containing fine coal and lime into the pyrolysis chamber；
Pyrolysis gas outlet, the pyrolysis gas outlet is located at the top of the pyrolysis shaft；
Carbide liquid is exported, and the carbide liquid outlet is located at the bottom of the EAF bottom,
Heater is three-phase electrode,
The pyrolysis shaft is connected with the EAF bottom by transition part, and the diameter of the transition part first subtracts along the direction fed
Increase after small,
Methods described includes：
Added the pelletizing material containing fine coal and lime from the pelletizing material inlet into the furnace of calcium carbide, make the pyrolysis
The filling pelletizing material in chamber and calcium carbide production chamber；
Start the heater to heat the pelletizing material in calcium carbide production chamber and occur calcium carbide smelting
Reaction, to obtain carbide liquid and to produce high-temperature tail gas；
Make the high-temperature tail gas be upwardly into the pyrolysis chamber to be pyrolyzed the pelletizing material in the pyrolysis chamber
Processing；And
Make the carbide liquid export from the carbide liquid to discharge,
The average grain diameter of the fine coal and lime is no more than 20 microns.
2. prepare the method for calcium carbide according to claim 1, it is characterised in that the carbide liquid outlet include it is multiple, it is described
It is oppositely arranged in multiple carbide liquid outlets radially.
3. the method for calcium carbide is prepared according to claim 1, it is characterised in that the temperature of the high-temperature tail gas is 600-1000
Degree Celsius.
4. the method for calcium carbide is prepared according to claim 1, it is characterised in that it is in 1750- that the calcium carbide, which smelts reaction,
Carry out completing for 5-30 minutes under 2200 degrees Celsius.
5. the method for calcium carbide is prepared according to claim 1, it is characterised in that it is Celsius 1900 that the calcium carbide, which smelts reaction,
Degree is lower complete within 12 minutes.
6. the method for calcium carbide is prepared according to claim 1, it is characterised in that the pelletizing material containing fine coal and lime
In fine coal be powdery in low order raw coal.
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| CN201510188620.7A CN104843707B (en) | 2015-04-20 | 2015-04-20 | Furnace of calcium carbide and the method that calcium carbide is prepared using the furnace of calcium carbide |
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| CN105883809B (en) * | 2016-03-30 | 2018-04-10 | 神雾环保技术股份有限公司 | Furnace of calcium carbide and the method for preparing calcium carbide |
| CN105885978A (en) * | 2016-04-29 | 2016-08-24 | 神雾环保技术股份有限公司 | Briquette and calcium carbide preparation method and calcium carbide preparation system |
| CN107473225A (en) * | 2016-06-08 | 2017-12-15 | 神雾环保技术股份有限公司 | Prepare the system and method for calcium carbide |
| CN106430204A (en) * | 2016-12-09 | 2017-02-22 | 神雾环保技术股份有限公司 | Thermal treatment and oxygen thermal recovery integrated calcium carbide smelting furnace |
| CN106698431A (en) * | 2016-12-09 | 2017-05-24 | 神雾环保技术股份有限公司 | Carbon-thermal calcium carbide production equipment |
| CN106430203A (en) * | 2016-12-09 | 2017-02-22 | 神雾环保技术股份有限公司 | Calcium carbide smelting furnace |
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| CN103272536B (en) * | 2012-06-21 | 2016-05-04 | 北京化工大学 | Composite bed reactor and the method for a kind of coproduction calcium carbide, coal gas and tar |
| CN204752218U (en) * | 2015-04-20 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Carbide stove |
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