CN205740375U - The preparation system of carbide - Google Patents
The preparation system of carbide Download PDFInfo
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- CN205740375U CN205740375U CN201620419692.8U CN201620419692U CN205740375U CN 205740375 U CN205740375 U CN 205740375U CN 201620419692 U CN201620419692 U CN 201620419692U CN 205740375 U CN205740375 U CN 205740375U
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Abstract
The utility model discloses the preparation system of carbide, described system includes: feed material preparation units, pay-off, preheating furnace, high temperature conveyer device and furnace of calcium carbide；Described feed material preparation units includes breaker, mixing arrangement and the shaped device being sequentially connected；Described breaker is provided with feed(raw material)inlet, the outlet of described shaped device and the inlet communication of described pay-off；The outlet of described pay-off is connected with described preheating furnace entrance；Described preheating furnace is provided with solid matter outlet and oil gas vent, and solid matter outlet is connected with high temperature conveyer device；The outlet of described high temperature conveyer device connects with the high-temp solid material entrance of described furnace of calcium carbide；Described furnace of calcium carbide is provided with described high-temp solid material entrance, oxygen intake, carbide outlet and furnace gas export, described high-temp solid material entrance is connected with described solid matter outlet, product carbide is derived by the outlet of described carbide, and the gas produced in carbide course of reaction is derived by described furnace gas export.
Description
Technical field
This utility model relates to technical field of calcium carbide production, particularly relates to the preparation system of a kind of carbide.
Background technology
The production method aerobic full-boiled process of carbide and electrothermal way two kinds, current industrial general employing electrothermal way produces
Carbide, i.e. coke (C) and calcium oxide (CaO), in furnace of calcium carbide, use fixed bed to rely on high arc temperature (＞
2000 DEG C) melt reaction and generate carbide, it is to use block stock charging and profit that electrothermal way prepares the feature of carbide
Using electrical energy production carbide, it exists, and reaction rate is slow, response time length, reaction temperature are high, and power consumption is big,
Carbide yields poorly, dust and treating tail gas difficulty problem.Exist " high just because of tradition carbide production technology
Input, high pollution, high power consumption " shortcoming, do not meet the requirement of energy-saving and emission-reduction and sustainable development, therefore send out
Open up limited.
Oxygen full-boiled process is to make part carbon burn in the presence of oxygen, and the heat of high temperature of generation makes residual carbon and calcium
React generation carbide, this method owing to having that the response time is short, reaction temperature is low, pollute little advantage by
Gradually it is taken seriously.But oxygen full-boiled process is owing to using carbon back material combusting heat supply, and the substantial amounts of ash of unavoidable generation, this is not
Only increase energy consumption and carbide quality can be reduced.In electrothermal way furnace of calcium carbide, ash often increases one percentage point,
Power consumption increases by 50 degree.
Utility model content
This utility model expectation provides the preparation system of a kind of carbide, can reduce energy consumption and ash introduces.
The technical scheme of this utility model embodiment is achieved in that
This utility model embodiment provides the preparation system of a kind of carbide, and this system includes: pretreatment of raw material
Unit, pay-off, preheating furnace, high temperature conveyer device and furnace of calcium carbide；Wherein,
Described feed material preparation units includes breaker, mixing arrangement and the shaped device being sequentially connected；Institute
Stating breaker and be provided with carbon back feed(raw material)inlet and calcio feed(raw material)inlet, the outlet of described shaped device is sent with described
The inlet communication of material device；
The outlet of described pay-off is connected with described preheating furnace entrance；
Described preheating furnace is provided with solid matter outlet and oil gas vent, solid matter outlet and high temperature conveyer device
It is connected；
The outlet of described high temperature conveyer device connects with the high-temp solid material entrance of described furnace of calcium carbide；
Described furnace of calcium carbide is provided with described high-temp solid material entrance, oxygen intake, carbide outlet and furnace gas export,
Described high-temp solid material entrance is connected with described solid matter outlet, and product carbide is by described carbide outlet guide
Going out, the gas produced in carbide course of reaction is derived by described furnace gas export.
In such scheme, described preheating furnace is radial canal rotary hearth furnace.
In such scheme, described oxygen intake is oxygen rifle access port, is positioned at middle part and/or the end of described furnace of calcium carbide
Portion.
In such scheme, described breaker includes Gas grinding unit, for by former to carbon back raw material and calcio
Material carries out fine grinding respectively.
In such scheme, described shaped device includes: preload screw and roller briquetting machine, described mixing arrangement
The mixed material being mixed to get molding in described roller briquetting machine after described preload screw precompressed.
In such scheme, described high temperature conveyer device includes:
Sealing thermal insulation tank；Or
Sealing thermal insulation carrier bar.
In such scheme, described pay-off is spiral feeder.
Having the beneficial effects that of technical solutions of the utility model: use optimum oxygen and the proportioning of carbon material, make
Its imperfect combustion provides thermal source in turn ensure that the reducing atmosphere of system for system simultaneously, improves utilization of energy
Efficiency；Use radial canal rotary hearth furnace pre-heating system, it is achieved that the classified utilization of low-order coal, after reducing simultaneously
The carbon material consumption of continuous furnace of calcium carbide, reduces ash to greatest extent and introduces；By controlling the granularity of reaction raw materials
Reduce reaction temperature, reach optimum reactive state.
Accompanying drawing explanation
The composition structural representation of the preparation system of the carbide that Fig. 1 provides for this utility model；
The process flow diagram of the preparation method of the carbide that Fig. 2 provides for this utility model.
Detailed description of the invention
In order to be illustrated more clearly that this utility model embodiment and technical scheme, below in conjunction with accompanying drawing and enforcement
The technical solution of the utility model is described in detail by example, it is clear that described embodiment is this reality
By novel a part of embodiment rather than whole embodiment.Based on embodiment of the present utility model, ability
The every other embodiment that territory those of ordinary skill is obtained on the premise of not paying creative work, all belongs to
Scope in this utility model protection.
The composition structural representation of the preparation system of the carbide that Fig. 1 provides for this utility model, as it is shown in figure 1,
This preparation system includes: feed material preparation units 1, pay-off 2, preheating furnace 3, high temperature conveyer device 4
And furnace of calcium carbide 5；Wherein,
Feed material preparation units 1 includes breaker 11, mixing arrangement 12 and the shaped device being sequentially connected
13；The outlet of described shaped device 13 and the inlet communication of described pay-off 2；
The outlet of pay-off 2 is connected with described preheating furnace 3 entrance；
Preheating furnace 3 is provided with solid matter outlet 32 and oil gas vent 31, and solid matter outlet 32 is defeated with high temperature
Device 4 is sent to be connected；
High temperature conveyer device 4 outlet connects with the high-temp solid material entrance of described furnace of calcium carbide 5；
Furnace of calcium carbide 5 is provided with described high-temp solid material entrance, oxygen intake 53 and 54, carbide outlet 51 and
Furnace gas export 52, described high-temp solid material entrance is connected with described solid matter outlet, and product carbide is by institute
Stating carbide outlet 51 derivation, the gas produced in carbide course of reaction is derived by described furnace gas export 52.
Further, in such scheme, described preheating furnace 3 is radial canal rotary hearth furnace.
Further, in such scheme, described oxygen intake is oxygen rifle access port, is positioned at described furnace of calcium carbide
Middle part and/or bottom, i.e. as it is shown in figure 1, furnace of calcium carbide 5 is provided with in the middle part of oxygen rifle bottom access port 53 and oxygen rifle
Access port 54.
Further, in such scheme, described breaker 11 includes Gas grinding unit, for by carbon back
Raw material and calcio raw material carry out fine grinding respectively.
Further, in such scheme, described shaped device 13 includes: preload screw and roller briquetting machine,
The mixed material that described mixing arrangement is mixed to get after described preload screw precompressed at described roller briquetting machine
Middle molding.
Further, in such scheme, described high temperature conveyer device 4 includes:
Sealing thermal insulation tank；Or
Sealing thermal insulation carrier bar.
Further, in such scheme, described pay-off 2 is spiral feeder.
The process flow diagram of the preparation method of the carbide that Fig. 2 provides for this utility model, i.e. shown in Fig. 1
Carbide preparation system use technological process, as in figure 2 it is shown, the method includes:
Carbon back raw material and calcio raw material are carried out fine grinding by breaker, respectively obtain carbon back material powder and calcio
Material powder；
Mixing arrangement is by containing described carbon back material powder and the mixture of described calcio material powder and binding agent
Carry out mixing, moistening mill process, obtain mixed material；
Described mixed material is shaped processing by shaped device, obtains material group；
Described material group is sent in preheating furnace and is pyrolyzed by pay-off, obtains pyrolysis gas, tar and high temperature
Solid material；
Described high-temp solid material is delivered in furnace of calcium carbide through high temperature conveyer device；
In described furnace of calcium carbide, it is passed through oxygen, makes the burning of carbon material provide heat to carry out carbide smelting, obtain carbide
Product and calcium carbide furnace gas.
Concrete technological process is as follows:
1, carbon back raw material and calcio raw material are carried out fine grinding, such that it is able to obtaining particle diameter is below 0.074mm
Carbon back material powder and the calcio material powder that particle diameter is below 0.074mm.Through practical proof, when the two
When particle diameter is reduced to below 0.074mm, the initial generation temperature of Acetylenogen. is down to 1450 DEG C, and at 1850 DEG C
The reaction rate of its maximum can be reached, by carbon back raw material and calcio raw material are carried out fine grinding process, obtain
Ultra-fine grade material, can increase material specific surface area and contact area, and then significantly reduce smelting process also
Former reaction activity, so that reduction reaction can be carried out at a lower temperature, thus can significantly carry
High carbide production efficiency, and significantly reduce carbide production cost.
2, mixed-forming, adds specific forming agent mix homogeneously in blender by above powder, passes through
Molding in roller briquetting machine after preload screw precompressed, obtains the type ball of certain particle size.Type spherolite degree can be
Between 5～35mm.Through practical proof, type spherolite degree is when about 15mm, at furnace charge air permeability, material
Heat and mass aspect is optimum, and undersized can affect the breathability of furnace charge, and crossing conference affects storeroom
Heat transfer, causes the response time to lengthen, and reduces carbide reaction rate.
3, the pre-heat treatment, according to embodiment of the present utility model, successively by material pelletizing obtained above to spoke
Carrying out cloth in penetrating pipe rotary hearth furnace, along with the operating of rotary furnace bottom, material pelletizing is pyrolyzed furnace chamber at radial canal
Inside carry out the pre-heat treatment, in furnace chamber at 1100 DEG C～1400 DEG C, finally give coal gas, tar and solid ball
Material.Through practical proof, the pre-heat treatment in radial canal rotary hearth furnace, it is possible not only to obtain coal gas and coal tar,
High-temp solid material heat delivers to furnace of calcium carbide simultaneously, can significantly improve reaction mass activity, reduce furnace of calcium carbide carbon
Consumption and oxygen consume, and reduce the ash impact on carbide quality.
4, furnace of calcium carbide, the ball material directly heat of more than 1200 DEG C obtained above delivers to furnace of calcium carbide, same at furnace bottom
Time be passed through oxygen, by providing heat with the reaction of carbon material, make calcio raw material and carbon back raw material reaction generate carbide,
By-product substantial amounts of high temperature CO gas simultaneously.Through practical proof, by controlling oxygen, carbon back raw material and calcio
The proportioning (mass ratio 0.3～0.5:1.5:1) of raw material, can make its reaction environment remain in reducing atmosphere,
And the most do not have carbon back raw material and the residue of calcio raw material.According to the preparation method of this utility model carbide,
By carbon back raw material and calcio raw material are carried out fine grinding process, obtain ultra-fine grade material, material can be increased
Specific surface area and contact area, and then significantly reduce smelting process reaction activity, thus improve carbide and produce
Efficiency.Use radiant tube type rotary hearth furnace (this pelletizing includes carbon back raw material, calcio raw material to material pelletizing simultaneously
And additive) carry out the pre-heat treatment, it is possible not only to obtain clean coal gas and coal tar, avoids biography simultaneously
The ash of system oxygen full-boiled process direct combustion coal introduction system, does not the most give follow-up carbide smelting while improving added value of product
Refining increases burden.It addition, high-temp solid product directly heat delivers to furnace of calcium carbide, in minimizing furnace of calcium carbide, carbon material disappears
Consumption, effectively prevent ash and remains in carbide.
Embodiment 1
Airflow milling is used granularity to be carried out fine grinding be respectively dried place at jet coal and the quick lime of below 5mm
Reason, respectively obtains the particle diameter granule less than 0.07mm～0.05mm and accounts for jet coal powder and the life of more than 90%
Lime powder, wherein, jet coal Industrial Analysis is as shown in table 1, and quick lime (CaO) content is 92%,
Then, by jet coal powder and quick lime powder in gas is delivered to material-compound tank, according to weight ratio it is, calculogenesis
Ash powder: jet coal powder=0.6:1 mixes, and the powder gas of mixing is delivered to forming unit and carries out
Molding, obtains the pelletizing of particle diameter 15 × 5 × 10mm, directly by belt transport to radial canal rotary hearth furnace furnace roof
Feed bin, uses vibration material distributor to carry out cloth to rotary furnace bottom, and fabric thickness is 20mm, then as
The rotation of rotary furnace bottom, material pelletizing is carried out at preheating under 1200 degrees Celsius at radial canal rotary hearth furnace intracavity
Manage 30 minutes, and utilize device for recovering oil and gas gas recovery, coal tar and the high-temp solid of preheating furnace intracavity
Pelletizing, high-temp solid pelletizing is sent device to send in furnace of calcium carbide through high-temperature hot, is sprayed by the oxygen lance of furnace bottom
Enter oxygen, by carbon material and oxygen imperfect combustion heat release, react at optimal reaction temperature 1850 DEG C,
To carbide product and high heating value CO tail gas.Carbide product is taken 5 batch samples (every batch sample 50g) at LJD
On Acetylenogen. gas forming amount determinator according to GB measure gas forming amount, gas forming amount scope 300～310L/kg it
Between, reach high-quality carbide standard.
Table 1 jet coal Industrial Analysis (wt%)
| Moisture (Mad) | Ash (Aad) | Volatile matter (Vad) | Fixed carbon (Cad) |
| 5.07 | 5.80 | 29.30 | 59.83 |
Comparative example
The contrast of oxygen full-boiled process traditional with employing, and the result adding tradition furnace of calcium carbide it is pyrolyzed with micropowder before
Contrast, proves beneficial effect by data.
Tradition oxygen full-boiled process produces carbide, is all provided by carbon, oxygen burning owing to carbide reacts institute's calorific requirement, electricity
In stone reacting furnace, needed for ton carbide, fuel carbon amounts is higher than this technique by more than 15%, and corresponding ash of introducing arrive more
In carbide product, reduce carbide gas forming amount.This technique is higher than the carbide product gas forming amount that traditional oxygen full-boiled process produces
5%～more than 10%.
Add compared with tradition furnace of calcium carbide with micropowder, this technique does not has the high power consumption of furnace of calcium carbide, but uses carbon material
Imperfect combustion heat release produces carbide.Carbon material imperfect combustion is equivalent to carbon gasification, and its thermal efficiency is up to 80%
Above；China's TV university part uses coal electricity, and its thermal efficiency is only about 40%；In the case of identical heat is provided,
This technique can consume mark coal more than 25% less.
Again illustrate, the foregoing is only embodiment of the present utility model, not thereby limit this utility model
The scope of the claims, every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalent flow
Cheng Bianhuan, the be combineding with each other of technical characteristic between the most each embodiment, or directly or indirectly it is used in other phases
The technical field closed, is the most in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. the preparation system of a carbide, it is characterised in that described system includes: feed material preparation units,
Pay-off, preheating furnace, high temperature conveyer device and furnace of calcium carbide；Wherein,
Described feed material preparation units includes breaker, mixing arrangement and the shaped device being sequentially connected；Institute
Stating breaker and be provided with carbon back feed(raw material)inlet and calcio feed(raw material)inlet, the outlet of described shaped device is sent with described
The inlet communication of material device；
The outlet of described pay-off is connected with described preheating furnace entrance；
Described preheating furnace is provided with solid matter outlet and oil gas vent, solid matter outlet and high temperature conveyer device
It is connected；
The outlet of described high temperature conveyer device connects with the high-temp solid material entrance of described furnace of calcium carbide；
Described furnace of calcium carbide is provided with described high-temp solid material entrance, oxygen intake, carbide outlet and furnace gas export,
Described high-temp solid material entrance is connected with described solid matter outlet, and product carbide is by described carbide outlet guide
Going out, the gas produced in carbide course of reaction is derived by described furnace gas export.
The preparation system of carbide the most according to claim 1, it is characterised in that described preheating furnace is radiation
Pipe rotary hearth furnace.
The preparation system of carbide the most according to claim 1, it is characterised in that described oxygen intake is oxygen
Rifle access port, is positioned at middle part and/or the bottom of described furnace of calcium carbide.
The preparation system of carbide the most according to claim 1, it is characterised in that described breaker includes
Gas grinding unit, for carrying out fine grinding respectively by carbon back raw material and calcio raw material.
The preparation system of carbide the most according to claim 1, it is characterised in that described shaped device includes:
Preload screw and roller briquetting machine, the mixed material that described mixing arrangement is mixed to get is through described preload screw
Molding in described roller briquetting machine after precompressed.
The preparation system of carbide the most according to claim 1, it is characterised in that described high temperature conveyer device
Including:
Sealing thermal insulation tank；Or
Sealing thermal insulation carrier bar.
The preparation system of carbide the most according to claim 1, it is characterised in that described pay-off is spiral shell
Rotation pay-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419692.8U CN205740375U (en) | 2016-05-10 | 2016-05-10 | The preparation system of carbide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776218A (en) * | 2016-05-10 | 2016-07-20 | 神雾环保技术股份有限公司 | Calcium carbide preparation system and method |
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- 2016-05-10 CN CN201620419692.8U patent/CN205740375U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776218A (en) * | 2016-05-10 | 2016-07-20 | 神雾环保技术股份有限公司 | Calcium carbide preparation system and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |