CN206266230U - A kind of production system of calcium carbide - Google Patents
A kind of production system of calcium carbide Download PDFInfo
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- CN206266230U CN206266230U CN201621349213.6U CN201621349213U CN206266230U CN 206266230 U CN206266230 U CN 206266230U CN 201621349213 U CN201621349213 U CN 201621349213U CN 206266230 U CN206266230 U CN 206266230U
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- oxygen
- nozzle
- calcium carbide
- pulverized limestone
- coke
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Abstract
The utility model is related to a kind of production system of calcium carbide.The system includes feed coal fragmentation cell, down-flow fluidized bed using ECT pyrolysis oven, lime fragmentation cell, the hot furnace of calcium carbide of oxygen, and feed coal fragmentation cell includes that feed coal entrance and fine coal are exported；Down-flow fluidized bed using ECT pyrolysis oven includes that coal entrance and high-temperature semi-coke are exported；Lime fragmentation cell includes that lime inlet, pulverized limestone are exported；The hot furnace of calcium carbide of oxygen includes oxygen and pulverized limestone nozzle, hot coke nozzle and calcium carbide discharging opening；Oxygen and pulverized limestone nozzle and hot coke nozzle are stretched into the hot furnace of calcium carbide of the oxygen from the top down of the hot furnace of calcium carbide of the oxygen；Oxygen and pulverized limestone nozzle are connected with the pulverized limestone outlet of lime fragmentation cell, and hot coke nozzle is connected with the high-temperature semi-coke outlet of down-flow fluidized bed using ECT pyrolysis oven.Carrier of the utility model by the use of oxygen as pulverized limestone, liquidates and sprays hot coke powder fluid and be mixed with uniformly, being conducive to the haptoreaction of pulverized limestone, coke blacking and oxygen, so as to reduce the energy consumption of calcium carbide production process.
Description
Technical field
The utility model relates generally to the production field of calcium carbide, and in particular to a kind of production system of calcium carbide.
Background technology
Calcium carbide, mainly for the production of acetylene and ethynylation chemical product, was once described as a kind of important industrial chemicals
" mother of organic synthesis industry ".Consider from National energy distribution, " rich coal, oil-poor, few gas " is the typical case of China's energy resource structure
Feature, coal is the main energy sources of China, accounts for the 70% of primary energy, therefore, using coal production calcium carbide, calcium carbide and water are anti-
Acetylene should be obtained, Development of Coal ethyl-acetylene chemical industry is significant for Industrial Economic Development.
Traditional calcium carbide production mainly uses electrothermal way, i.e., with lump lime and block coke as raw material, in furnace of calcium carbide
By electric arc heated to more than 2000 degrees Celsius, by equation CaO+3C=CaC2The reaction principle of+CO carries out pyrolytic semlting production electricity
Stone.Consider from the requirement to carbon raw, traditional calcium carbide production technology is primarily present following defect：(1) carbon materials is required
Granularity is in 5-30mm, fixed carbon content>84%th, ash content<15%, disclosure satisfy that only coke, semicoke, the petroleum coke of these requirements
And some high-quality anthracites, and these raw material reserves are extremely limited, it is expensive；(2) can be with raw material shattering process
The raw material of 15-20% is gone out of use due to granularity less than 5mm, causes the serious waste of resource；(3) mainly used in calcium carbide production
Block carbon raw material and lime, mass transfer and heat transfer efficiency are low, and reaction rate is relatively low, and it is only 50% left that calcium carbide smelts furnace thermal efficiency
The right side, power consumption is up to 3250kWh/t calcium carbides or so.It can be seen that, the quality of carbon raw directly affects the Yield and quality of calcium carbide, electric power
The economic indicator such as unit consumption and cost.
Consider from the property of raw coal, ash, sulphur and other a small amount of mineral matters are contained in raw coal.Most of original pit ash is all high
In the ash requirements upper limit of carbide raw material, sorting deliming treatment need to be carried out to raw coal.Can be divided into wet method by the difference of separating medium
Sorting and the major class of dry separation two, coal is fully contacted with water during wet split, increases coal selecting product moisture and follow-up carbon
The dehydration energy of raw material；And conventional dry separation uses normal temperature air as separating medium, the surface moisture of raw coal increased
Contact sticking probability between particle, causes actual separating effect to be deteriorated.In addition, in recent years, journey is adopted as Coal Mechanical is melted
The raising of degree, fine coal content of the raw coal in recovery process accounts for 40-60%, and it is left that the poor low-order coal of hardness even accounts for 70%
The right side, this granularity obviously with traditional calcium carbide manufacturing technique requirent carbon raw is runed counter to more than 5mm.
The shortcomings of to solve traditional calcium carbide production technology to ingredient requirement harshness, highly energy-consuming, high pollution, poor benefit, widen
The scope of the carbon-based raw material of calcium carbide, calcium carbide production technology is further improved.
Therefore, regarding to the issue above, it is necessary to which a kind of production system of calcium carbide is provided, traditional calcium carbide production technology can be solved
The problems such as to ingredient requirement harshness, highly energy-consuming, high pollution, poor benefit.
Utility model content
Regarding to the issue above, the utility model aims to provide a kind of production system of calcium carbide, the purpose of the system and method
It is to solve the problems, such as the highly energy-consuming in calcium carbide production technology.Meanwhile, the utility model will solve calcium carbide production technology to raw material
High request problem.
The production system of the calcium carbide that the utility model is provided includes：Feed coal fragmentation cell, down-flow fluidized bed using ECT pyrolysis oven, lime break
The hot furnace of calcium carbide of broken unit, oxygen, wherein, the feed coal fragmentation cell includes that feed coal entrance and fine coal are exported, for feed coal
It is broken；The down-flow fluidized bed using ECT pyrolysis oven includes fine coal entrance, the outlet of high temperature raw coke oven gas and high-temperature semi-coke outlet, for the heat of coal
Solution；The fine coal entrance is connected with the fine coal outlet of the feed coal fragmentation cell；The lime fragmentation cell enters including lime
Mouth, pulverized limestone outlet, for the broken of lime；The hot furnace of calcium carbide of oxygen include oxygen and pulverized limestone nozzle, hot coke nozzle and
Calcium carbide discharging opening, for the hot method generation calcium carbide of oxygen；The oxygen and pulverized limestone nozzle and hot coke nozzle are from the oxygen thermoelectricity stone
The top down of stove is stretched into the hot furnace of calcium carbide of the oxygen；The lime of the oxygen and pulverized limestone nozzle and the lime fragmentation cell
Powder outlet is connected, and the hot coke nozzle is connected with the high-temperature semi-coke outlet of the down-flow fluidized bed using ECT pyrolysis oven.
Further, hot coke nozzle described in above-mentioned system is located on the vertical center line of the hot furnace of calcium carbide of the oxygen；
The oxygen and pulverized limestone the nozzle circumference centered on the hot coke nozzle are arranged symmetrically.
Further, the angle between the oxygen and pulverized limestone nozzle and the hot coke nozzle is acute angle.
Further, the oxygen and pulverized limestone nozzle can be one or more pairs of.
It is provided between the pulverized limestone outlet of above-mentioned system, the oxygen and pulverized limestone nozzle and the lime fragmentation cell
Mixing duct, the mixing duct is also associated with oxygen input tube road.
Above-mentioned system, the system also includes water-oil separating unit, and it includes high temperature raw coke oven gas entrance, pyrolysis gas outlet
And tar outlet；The high temperature raw coke oven gas entrance is connected with the high temperature raw coke oven gas outlet of the down-flow fluidized bed using ECT pyrolysis oven.
According to above-mentioned technical proposal of the present utility model, can solve traditional calcium carbide production technology it is harsh to ingredient requirement,
The problems such as highly energy-consuming, high pollution, poor benefit, the energy consumption of calcium carbide production process is reduced again.
Brief description of the drawings
Fig. 1 is the production system flow chart of the calcium carbide of the utility model embodiment；
Fig. 2 is the injection schematic diagram of the oxygen of the utility model embodiment, pulverized limestone and hot coke.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the present utility model is described in more details, with
Just better understood when the advantage of scheme of the present utility model and various aspects.However, specific implementations described below side
Formula and embodiment are only descriptive purposes, rather than to limitation of the present utility model.
The production system flow chart of the calcium carbide that Fig. 1 is provided for the utility model.
The system mainly includes feed coal fragmentation cell, down-flow fluidized bed using ECT pyrolysis oven, lime fragmentation cell, the hot furnace of calcium carbide of oxygen, profit
Down-flow fluidized bed using ECT pyrolysis oven is re-fed into after crushing feed coal with feed coal fragmentation cell to be pyrolyzed, it is using lime fragmentation cell that lime is former
After material is broken, then the hot coke obtained after pulverized coal pyrolysis is mixed the hot furnace of calcium carbide generation calcium carbide of feeding oxygen with pulverized limestone.Wherein, mix
During conjunction, carrier of the utility model by the use of oxygen as pulverized limestone liquidates and sprays hot coke powder fluid and be mixed with uniformly, making
Pulverized limestone, coke blacking and oxygen are fully contacted reaction.
Further, the utility model reduces the firing point of coke using oxygen and high-temperature coke directly contact, saves
Calcium carbide smelts the consumption of coke.
Specifically, the feed coal fragmentation cell includes that feed coal entrance and fine coal are exported, for the broken of feed coal.
The down-flow fluidized bed using ECT pyrolysis oven includes that fine coal entrance and high-temperature semi-coke are exported, for the pyrolysis of coal；The fine coal entrance
It is connected with the fine coal outlet of the feed coal fragmentation cell.
The lime fragmentation cell includes that lime inlet, pulverized limestone are exported, for the broken of lime.
The hot furnace of calcium carbide of oxygen includes oxygen and pulverized limestone nozzle, hot coke nozzle and calcium carbide discharging opening, for the hot method of oxygen
Generation calcium carbide；The oxygen and pulverized limestone nozzle and hot coke nozzle stretch into the oxygen from the top down of the hot furnace of calcium carbide of the oxygen
In hot furnace of calcium carbide；The oxygen and pulverized limestone nozzle are connected with the pulverized limestone outlet of the lime fragmentation cell, the hot coke
Nozzle is connected with the high-temperature semi-coke outlet of the down-flow fluidized bed using ECT pyrolysis oven.
In order that hot coke is fully contacted with oxygen and pulverized limestone, they can be mixed equal in the hot furnace of calcium carbide of feeding oxygen
It is even.Described hot coke nozzle in said system can be located on the vertical center line of the hot furnace of calcium carbide of the oxygen, oxygen and stone
Ashes nozzle circumference centered on the hot coke nozzle is arranged symmetrically.
In order that hot coke, oxygen and lime injection are well mixed and not burning oxygen and pulverized limestone nozzle, institute can be made
The angle stated between oxygen and pulverized limestone nozzle and the hot coke nozzle is acute angle.
Can be according to pulverized limestone and the ratio and treating capacity of coke, it is a pair or many to control the oxygen and pulverized limestone nozzle
It is right.
For the ease of the mixing of oxygen and pulverized limestone, the stone of the oxygen and pulverized limestone nozzle and the lime fragmentation cell
Mixing duct is provided between ashes outlet, the mixing duct is connected with oxygen input tube road branch pipe.
In order to recycle the oil gas that pyrolysis is produced, system may also include water-oil separating unit, and it includes high temperature raw coke oven gas
The outlet of entrance, pyrolysis gas outlet and profit；The high temperature raw coke oven gas entrance goes out with the high temperature raw coke oven gas of the down-flow fluidized bed using ECT pyrolysis oven
Mouth is connected.
The concrete operation step of the calcium carbide production method that the utility model is provided is as follows：
Down-flow fluidized bed using ECT pyrolysis oven is sent into after feed coal is crushed into ＜ 3mm, is allowed to that pyrolytic reaction occurs at 450-900 DEG C, it is raw
Into raw coke oven gas produced by pyrolysis oven top, then through profit cold separation unit refrigerated separation, obtain tar and pyrolysis gas product；
Directly heat delivers to the hot furnace of calcium carbide of oxygen after the high-temperature semi-coke self-pyrolysis furnace bottom extraction of generation.
By lime through lime fragmentation cell crushing and screening to ＜ 1mm powdered lime, in the case where oxygen is used as carrier gas,
It is ejected into the hot furnace of calcium carbide of oxygen via nozzle act.
Hot coke can vertically downward be sprayed from the center of oxygen thermoelectricity stone furnace roof, by oxygen and pulverized limestone with hot coke
Injection direction centered on circumference is symmetrical is sprayed to central hot coke, with the injection direction of hot coke arrangement at an acute angle.
The hot method generation calcium carbide of oxygen in the hot furnace of calcium carbide of oxygen.
From such scheme, the production system and method for the calcium carbide that the utility model is provided, by the use of oxygen as lime
The carrier of powder, liquidates and sprays hot coke powder fluid and be mixed with uniformly, being conducive to the contact of pulverized limestone, coke blacking with oxygen anti-
Should.
Further, the utility model reduces the firing point of coke using oxygen and high-temperature coke directly contact, saves
Calcium carbide smelts the consumption of coke.
According to above-mentioned technical proposal of the present utility model, can solve traditional calcium carbide production technology it is harsh to ingredient requirement,
The problems such as highly energy-consuming, high pollution, poor benefit, reduce the energy consumption of calcium carbide production process.
The technical solution of the utility model is illustrated with reference to specific embodiment.
Institute's taking technique condition value is exemplary in following embodiments, and its desirable number range is as indicated above in book
It is shown.
Embodiment
The system is cold comprising feed coal fragmentation cell, lime fragmentation cell, down-flow fluidized bed using ECT pyrolysis oven, the hot furnace of calcium carbide of oxygen and profit
But separative element.Feed coal fragmentation cell, down-flow fluidized bed using ECT pyrolysis oven, CaC2Reactor is sequentially connected；Lime fragmentation cell, oxygen thermoelectricity
Stone stove is connected, and profit cold separation unit is connected with down-flow fluidized bed using ECT pyrolysis oven.
Feed coal is crushed to ＜ 3mm into down-flow fluidized bed using ECT pyrolysis oven, and pyrolytic reaction, the waste coal of generation occur at 450-900 DEG C
Gas is produced by pyrolysis oven top, and tar and pyrolysis gas product, the height of generation are obtained after profit cold separation unit refrigerated separation
Directly heat send oxygen hot furnace of calcium carbide after warm semicoke self-pyrolysis furnace bottom extraction.
Lime, in the case where oxygen is used as carrier gas, is passed through through the powdered lime of lime fragmentation cell crushing and screening to ＜ 1mm
It is ejected into the hot furnace of calcium carbide of oxygen by nozzle act.
, in the center of oxygen thermoelectricity stone furnace roof, vertically downward, oxygen and pulverized limestone nozzle are along warm for hot coke arrangement of nozzles
Coke nozzle circumference is arranged symmetrically, with hot coke nozzle arrangement at an acute angle.
As seen from the above-described embodiment, the technical solution of the utility model can solve traditional calcium carbide production technology to ingredient requirement
The problems such as harshness, highly energy-consuming, high pollution, poor benefit, reduce the energy consumption of calcium carbide production process.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the utility model example,
And not to the restriction of implementation method.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no need and unable to be exhaustive to all of implementation method.And thus
Among the obvious change or variation amplified out are still in protection domain of the present utility model.
Claims (6)
1. a kind of production system of calcium carbide, the system includes that feed coal fragmentation cell, down-flow fluidized bed using ECT pyrolysis oven, lime are broken single
Unit, the hot furnace of calcium carbide of oxygen, wherein,
The feed coal fragmentation cell includes that feed coal entrance and fine coal are exported, for the broken of feed coal；
The down-flow fluidized bed using ECT pyrolysis oven includes fine coal entrance, the outlet of high temperature raw coke oven gas and high-temperature semi-coke outlet, for the pyrolysis of coal；Institute
Fine coal entrance is stated to be connected with the fine coal outlet of the feed coal fragmentation cell；
The lime fragmentation cell includes that lime inlet, pulverized limestone are exported, for the broken of lime；
The hot furnace of calcium carbide of oxygen includes oxygen and pulverized limestone nozzle, hot coke nozzle and calcium carbide discharging opening, for the hot method generation of oxygen
Calcium carbide；The oxygen and pulverized limestone nozzle and hot coke nozzle stretch into the oxygen thermoelectricity from the top down of the hot furnace of calcium carbide of the oxygen
In stone stove；The oxygen and pulverized limestone nozzle are connected with the pulverized limestone outlet of the lime fragmentation cell, the hot coke nozzle
It is connected with the high-temperature semi-coke outlet of the down-flow fluidized bed using ECT pyrolysis oven.
2. system according to claim 1, it is characterised in that the hot coke nozzle is located at the perpendicular of the hot furnace of calcium carbide of the oxygen
On straight center line；The oxygen and pulverized limestone the nozzle circumference centered on the hot coke nozzle are arranged symmetrically.
3. system according to claim 2, it is characterised in that the oxygen and pulverized limestone nozzle and the hot coke nozzle
Between angle be acute angle.
4. system according to claim 2, it is characterised in that the oxygen and pulverized limestone nozzle are one or more pairs of.
5. system according to claim 1, it is characterised in that the oxygen and pulverized limestone nozzle and the lime are broken single
Mixing duct is provided between the pulverized limestone outlet of unit, the mixing duct is also associated with oxygen input tube road.
6. system according to claim 1, it is characterised in that the system also includes water-oil separating unit, and it includes height
Warm raw coke oven gas entrance, pyrolysis gas outlet and tar outlet；The high temperature of the high temperature raw coke oven gas entrance and the down-flow fluidized bed using ECT pyrolysis oven
Raw coke oven gas outlet is connected.
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| CN201621349213.6U CN206266230U (en) | 2016-12-09 | 2016-12-09 | A kind of production system of calcium carbide |
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| CN201621349213.6U CN206266230U (en) | 2016-12-09 | 2016-12-09 | A kind of production system of calcium carbide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430205A (en) * | 2016-12-09 | 2017-02-22 | 神雾环保技术股份有限公司 | Production system and method of calcium carbide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430205A (en) * | 2016-12-09 | 2017-02-22 | 神雾环保技术股份有限公司 | Production system and method of calcium carbide |
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Granted publication date: 20170620 Termination date: 20181209 |