CN107128923A - Calcium carbide, lime nitrogen and carbon black Joint Production system and method - Google Patents
Calcium carbide, lime nitrogen and carbon black Joint Production system and method Download PDFInfo
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- CN107128923A CN107128923A CN201710449266.8A CN201710449266A CN107128923A CN 107128923 A CN107128923 A CN 107128923A CN 201710449266 A CN201710449266 A CN 201710449266A CN 107128923 A CN107128923 A CN 107128923A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C7/00—Fertilisers containing calcium or other cyanamides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
Abstract
The invention discloses calcium carbide, lime nitrogen and carbon black Joint Production system and method, system includes：Calcium carbide granulation tower; heat transfer zone and gas distributed area are inside limited from top to bottom; heat transfer zone has rotary pelleting machine; rotary pelleting machine includes rotating disk and is arranged in the rotary shaft of rotating disk lower end; the arranged beneath of rotating disk has carbon dioxide distribution plate; heat transfer zone upper end is disposed with carbon dioxide outlet after carbide liquid entrance and heat exchange, and gas distributed area is disposed with the second carbon dioxide entrance and the outlet of calcium carbide grain；Nitriding furnace, inside limits nitridation reaction space and gas distribution space from top to bottom, and there is gas after calcium carbide grain entrance and nitridation to export in nitridation reaction space, and gas distribution space is disposed with nitrogen inlet and the outlet of granular lime nitrogen；First cyclone separator, with gas outlet after gaseous mixture entrance, the first dedusting and the dust outlet containing lime nitrogen powder and carbon black；Powder separation device, with mixed dust entrance, the outlet of lime nitrogen powder and carbon black outlet.
Description
Technical field
The invention belongs to chemical technology field, specifically, given birth to the present invention relates to a kind of calcium carbide, lime nitrogen and carbon black joint
Produce system and method.
Background technology
Lime nitrogen is agriculturally having been widely used.Base manure, the acidity for eliminating soil, the calcium of supplement plant for such as doing paddy rice
Element etc..In the plain chemical fertilizer of calcium, calcium nitrate calcium content is 19.4%, and calcium superphosphate calcium content is 18~21%, calcium magnesium phosphate
Calcium content is 21~24%, and ground phosphate rock calcium content is 20~35%.And lime nitrogen calcium content is 38.5%, its fertilizer efficiency is significantly larger than
Other calcareous fertilisers.In terms of the supplement plant particularly calcium element of calciphile, lime nitrogen has remarkable effect.On prevention and cure of schistosomiasis line, stone is used
The parasitic body oncomelania of grey nitrogen elimination schistosoma, reaches the purpose of elimination schistosoma disease.Lime nitrogen is industrially mainly used in double cyanogen
The production of amine and sulphur guanidine.In domestic market, the lime nitrogen produced for cyanamide, dicyandiamide accounts for 60% or so of total output, use
The amount produced in thiocarbamide, carbendazim accounts for 35% or so, only a small number of to be used for agricultural production.Recently as urban greening project and
The heating in home flower market, the application of lime nitrogen agriculturally is more and more extensive.At present, demand in the world to lime nitrogen
Amount is larger, particularly Japan, TaiWan, China, and agricultural lime nitrogen is in great demand.And domestic existing lime nitrogen is substantially powdered,
As agricultural fertilizer, powder is flown upward when applying, severe contamination environment, while powder floats can cause crops on corps leaf surface
Burn seedlings is withered.Again because pulverulent lime nitrogen proportion is small, floated during fertilising on ground surface or the water surface, easily cause the stream of fertilizer
The allergy of mistake and people and animals, poisoning, are not suitable for agricultural.
Calcium carbide production method is typically using mineral hot furnace electric arc heated carbon (including coal, semicoke etc.) and calcium element (calcium oxide, hydrogen
Calcium oxide and carbon calcium etc.) raw material, calcium carbide (CaC is generated at a temperature of 1800 DEG C~2300 DEG C2), 2000 DEG C or so of carbide liquid
Released through furnace of calcium carbide discharging opening and flow into calcium carbide crucible, natural cooling is cured as calcium carbide block.Calcium carbide production process energy consumption is larger, power consumption
High, the heat only entrained by carbide liquid sensible heat and carbide liquid phase transformation just accounts for furnace of calcium carbide and powers 24% or so of energy.How to subtract
Low-loss, improves efficiency of energy utilization, is always the target that calcium carbide industry is pursued.
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 to propose a kind of calcium carbide, lime nitrogen and carbon black Joint Production system and method, and the system can make full use of electricity
Stone liquid sensible heat obtains granulated carbide, lime nitrogen and carbon black simultaneously, and can reduce granular lime nitrogen production process energy consumption and
Investment.
In one aspect of the invention, the present invention proposes a kind of calcium carbide, lime nitrogen and carbon black Joint Production system.According to
Embodiments of the invention, the system includes：
Heat transfer zone and gas distributed area, the heat exchange are limited from top to bottom in calcium carbide granulation tower, the calcium carbide granulation tower
Area has rotary pelleting machine, and the rotary pelleting machine includes rotating disk and is arranged in the rotary shaft of the rotating disk lower end, described
The arranged beneath of rotating disk has the edge tool close to the rotating disk on carbon dioxide distribution plate, the carbon dioxide distribution plate
Have and the first carbon dioxide entrance is disposed with perforate, the rotary shaft, in the first carbon dioxide entrance and the rotary shaft
The carbon dioxide channel connection in portion, the carbon dioxide distribution plate is connected with the carbon dioxide channel, the heat transfer zone upper end
Carbon dioxide outlet after carbide liquid entrance and heat exchange is disposed with, the gas distributed area is disposed with the second carbon dioxide entrance and electricity
The outlet of stone grain, and it is disposed with carbon dioxide distribution grid in the second carbon dioxide porch；
Nitridation reaction space and gas distribution space, the nitridation are limited in nitriding furnace, the nitriding furnace from top to bottom
There is reaction compartment gas after calcium carbide grain entrance and nitridation to export, and the calcium carbide grain entrance is connected with the outlet of calcium carbide grain, described
Gas distribution space is disposed with nitrogen inlet and the outlet of granular lime nitrogen, and is disposed with the nitrogen inlet nitrogen distribution
Device；
There is first cyclone separator, first cyclone separator gas after gaseous mixture entrance, the first dedusting to export and contain
There is the dust outlet of lime nitrogen powder and carbon black, the gaseous mixture entrance is connected with gas outlet after the nitridation；
Powder separation device, the powder separation device has mixed dust entrance, the outlet of lime nitrogen powder and carbon black outlet,
The mixed dust entrance is connected with the dust outlet containing lime nitrogen powder and carbon black.
The system of calcium carbide according to embodiments of the present invention, lime nitrogen and carbon black Joint Production is by by carbide liquid and titanium dioxide
Carbon supply has to inside in the calcium carbide granulation tower of rotary pelleting machine, wherein, a part of carbon dioxide is supplied to rotary pelleting machine
The carbon dioxide distribution plate of rotating disk lower end, causes rotating disk centrifugation edge calcium carbide liquid film under carbon dioxide gas stream dissection
It is separated into granular, i.e., liquid crushing is carried out to carbide liquid, while by another part carbon dioxide from the bottom of calcium carbide granulation tower
Side wall supply, is realized and the granulated carbide liquid of whereabouts is cooled down and solidified, and carbon dioxide is heated, i.e., carbon dioxide is returned
The sensible heat of carbide liquid is received, then by the grain supply of obtained calcium carbide into nitriding furnace so that calcium carbide grain and the nitrogen of high temperature are carried out
Nitridation reaction obtains granular lime nitrogen, while gas can be obtained through cyclonic separation and powder separation after the nitridation obtained in nitriding furnace
Carbon black and lime nitrogen powder.Thus, granulated carbide, lime nitrogen and carbon black can be obtained simultaneously using the system, and it is not only effective
The sensible heat of carbide liquid is make use of, and eliminates broken lime nitrogen production process raw material of the prior art, milling and raw material and is added
Hot link, reduces energy consumption and the investment of granular lime nitrogen production process.
In addition, calcium carbide according to the above embodiment of the present invention, lime nitrogen and carbon black Joint Production system can also have such as
The technical characteristic added down：
In some embodiments of the invention, the calcium carbide, lime nitrogen and carbon black Joint Production system further comprise：The
One ceramic filter, first ceramic filter has gas entrance after the first dedusting, nitrogen outlet and mixed dust outlet, institute
State gas entrance after the first dedusting with gas outlet after first dedusting to be connected, the mixed dust outlet enters with the mixed dust
Mouth is connected；First waste heat boiler, nitrogen goes out after first waste heat boiler has the first air inlet, the first steam (vapor) outlet and exchanged heat
Mouthful, first air inlet is connected with the nitrogen outlet；Gas heat exchanger, the gas heat exchanger has nitrogen inlet, two
Carbon dioxide outlet, the nitrogen inlet and nitrogen outlet phase after the heat exchange after carbonoxide entrance and hot nitrogen outlet and cooling
Even, the hot nitrogen outlet is connected with the nitrogen inlet.Thus, it is possible to after effectively using the heat exchange obtained in calcium carbide granulation tower
The sensible heat of carbon dioxide, so as to reduce energy cost.
In some embodiments of the invention, the calcium carbide, lime nitrogen and carbon black Joint Production system further comprise：The
Two cyclone separators, second cyclone separator has carbon dioxide entrance, the second dedusting containing carbon dioxide after cooling
Gas is exported and the first dust outlet afterwards, and carbon dioxide entrance is connected with carbon dioxide outlet after the cooling after the cooling；
Second ceramic filter, second ceramic filter has gas entrance, the second dust outlet and carbon dioxide after the second dedusting
Outlet, gas entrance is connected with gas outlet after second dedusting containing carbon dioxide after second dedusting；Second waste heat pot
Stove, second waste heat boiler has the second air inlet, the second steam (vapor) outlet and cold carbon dioxide outlet, second air inlet
Be connected with the carbon dioxide outlet, the cold carbon dioxide outlet respectively with the first carbon dioxide entrance and described second
Carbon dioxide entrance is connected.Thus, the waste heat after heat exchange in carbon dioxide has not only effectively been reclaimed, and has realized carbon dioxide
Recycle, so as to reduce energy consumption and cost of material.
In another aspect of the invention, the present invention proposes a kind of using said system implementation calcium carbide, lime nitrogen and charcoal
The method of black Joint Production.Embodiments in accordance with the present invention, methods described includes：
(1) carbide liquid is supplied into the calcium carbide granulation tower and contacts progress with the first carbon dioxide and the second carbon monoxide
Granulation, to obtain carbon dioxide after calcium carbide grain and heat exchange；
(2) calcium carbide grain supply is contacted into progress nitridation reaction into the nitriding furnace with nitrogen, it is granular to obtain
Gas after lime nitrogen and nitridation；
(3) gas after the nitridation is supplied and carries out separating treatment into first cyclone separator, to obtain first
Gas and the dust containing lime nitrogen powder and carbon black after dedusting；
(4) dust containing lime nitrogen powder and carbon black is supplied into the powder separation device and carried out at separation
Reason, to obtain lime nitrogen powder and carbon black.
Calcium carbide, lime nitrogen and carbon black combine production method according to embodiments of the present invention is by by carbide liquid and carbon dioxide
Supply into the internal calcium carbide granulation tower with rotary pelleting machine, wherein, a part of carbon dioxide is supplied to rotary pelleting machine rotation
The carbon dioxide distribution plate of rotating disk lower end, causes rotating disk centrifugation edge calcium carbide liquid film point under carbon dioxide gas stream dissection
Dissipate to be granular, i.e., liquid crushing is carried out to carbide liquid, while by another part carbon dioxide from the side of the bottom of calcium carbide granulation tower
Wall is supplied, and realizes and the granulated carbide liquid of whereabouts is cooled down and solidified, and carbon dioxide is heated, i.e. carbon dioxide recovery
The sensible heat of carbide liquid, then by the grain supply of obtained calcium carbide into nitriding furnace so that calcium carbide grain and the nitrogen of high temperature carry out nitrogen
Change reaction and obtain granular lime nitrogen, while gas can obtain charcoal through cyclonic separation and powder separation after the nitridation obtained in nitriding furnace
Black and lime nitrogen powder.Thus, granulated carbide, lime nitrogen and carbon black can be obtained simultaneously using this method, and it is not only effectively sharp
With the sensible heat of carbide liquid, and eliminate broken lime nitrogen production process raw material of the prior art, milling and raw material heating
Link, reduces energy consumption and the investment of granular lime nitrogen production process.
In addition, calcium carbide according to embodiments of the present invention, lime nitrogen and carbon black combine production method can also be with following attached
Plus technical characteristic：
In some embodiments of the invention, the calcium carbide, lime nitrogen and carbon black combine production method further comprise：
(5) gas after first dedusting is supplied and carries out filtration treatment into first ceramic filter, to obtain nitrogen and to mix
Dust is closed, and the mixed dust is supplied in the powder separation device into step (4)；(6) nitrogen is supplied
Heat exchange processing is carried out into first waste heat boiler, to obtain nitrogen after the first steam and heat exchange；(7) by after the heat exchange
Nitrogen is supplied into the gas heat exchanger carries out heat exchange processing with nitrogen after the heat exchange, to obtain after hot nitrogen and cooling
Carbon dioxide, and the hot nitrogen is supplied into the nitriding furnace into step (2).Thus, it is possible to effectively utilize calcium carbide granulation
The sensible heat of carbon dioxide after the heat exchange obtained in tower, so as to reduce energy cost.
In some embodiments of the invention, the calcium carbide, lime nitrogen and carbon black combine production method further comprise：
(8) carbon dioxide after the cooling is supplied and carries out separating treatment into second cyclone separator, to obtain containing two
Gas and the first dust after second dedusting of carbonoxide；(9) gas after second dedusting containing carbon dioxide is supplied to institute
State and filtration treatment is carried out in the second ceramic filter, to obtain the second dust and carbon dioxide；(10) by the carbon dioxide
Supply carries out heat exchange processing into second waste heat boiler, to obtain cold carbon dioxide and the second steam, and will be described cold
Carbon dioxide is supplied into step (1) to be used as first carbon dioxide and/or second carbon dioxide.Thus, no
The waste heat after heat exchange in carbon dioxide has only effectively been reclaimed, and has realized recycling for carbon dioxide, so as to reduce energy
Consumption and cost of material.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is calcium carbide according to an embodiment of the invention, lime nitrogen and carbon black Joint Production system structure diagram；
Fig. 2 is according to the calcium carbide of further embodiment of the present invention, lime nitrogen and carbon black Joint Production system structure diagram；
Fig. 3 is calcium carbide, lime nitrogen and the carbon black Joint Production system structure diagram according to another embodiment of the invention；
Fig. 4 is calcium carbide according to an embodiment of the invention, lime nitrogen and carbon black combine production method schematic flow sheet；
Fig. 5 is according to the calcium carbide of further embodiment of the present invention, lime nitrogen and carbon black combine production method schematic flow sheet；
Fig. 6 is calcium carbide, lime nitrogen and the carbon black combine production method schematic flow sheet according to another embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
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 at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., 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, unless otherwise clear and definite restriction.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
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 one aspect of the invention, the present invention proposes a kind of processing calcium carbide, lime nitrogen and carbon black Joint Production system.
Embodiments in accordance with the present invention, with reference to Fig. 1, the system includes：Calcium carbide granulation tower 100, nitriding furnace 200, the first cyclone separator
300 and powder separation device 400.
Embodiments in accordance with the present invention, heat transfer zone 11 are limited with reference to Fig. 1, in calcium carbide granulation tower 100 gentle from top to bottom
Body distributed area 12, and in order to improve the resistance to elevated temperatures of calcium carbide granulation tower, water can be arranged on the outer wall of calcium carbide granulation tower
Cold wall, water-cooling wall is to set silicon carbide refractory coating on coil pipe or tubulation form, tubulation, and water-cooling wall uses forced heat-exchanging, so that
Improve the service life of calcium carbide granulation tower.
According to one embodiment of present invention, heat transfer zone 11 has after rotary pelleting machine 13, carbide liquid entrance 101 and heat exchange
Carbon dioxide outlet 102.Specifically, after carbide liquid entrance and heat exchange carbon dioxide outlet independently be arranged in heat transfer zone
Top.
According to still another embodiment of the invention, rotary pelleting machine 13 includes rotating disk 131 and is arranged under rotating disk 131
The rotary shaft 132 at end, the arranged beneath of rotating disk 131 has close on carbon dioxide distribution plate 133, carbon dioxide distribution plate 133
The edge of rotating disk 131 has perforate 134, and rotary shaft 132 includes rotatable inner tube 135 and fixed outer tube 136, outer tube
136 are set in inner tube 135 and are connected by bearing (not shown), and carbon dioxide is formed between outer tube 136 and inner tube 135 and is led to
The first carbon dioxide entrance 103 is disposed with road 137, outer tube 136, carbon dioxide distribution plate 133 connects with carbon dioxide channel 137
It is logical, and in order to avoid rotating disk and the scaling loss of rotary shaft, added water air-cooled structure using heat resisting steel in rotary shaft and rotating disk, and
And rotating uses frequency Varying and speed changing method, control to obtain electricity by adjusting rotating and flow of carbon dioxide gas speed
Stone grain granule size.Specifically, carbon dioxide enters carbon dioxide channel by the first carbon dioxide entrance, then through titanium dioxide
Carbon passage enters carbon dioxide distribution plate and sprayed from perforate, causes to centrifuge in rotating disk under carbon dioxide gas stream dissection
Edge calcium carbide liquid film be separated into it is granular, i.e., to carbide liquid carry out liquid crushing.
According to still a further embodiment, gas distributed area 12 is disposed with the second carbon dioxide entrance 104 and calcium carbide
Grain outlet 105 and carbon dioxide distribution grid 14.Specifically, gas distributed area is pyramidal structure, carbon dioxide entrance cloth
Put on the side wall of pyramidal structure, carbon dioxide distribution grid is arranged close to carbon dioxide entrance so that be supplied to gas point
Through carbon dioxide distribution grid, (gas distribution grid can be perforated plate-like knot of the prior art to the carbon dioxide in cloth area
Structure) after can be with dispersed, so as to improve the heat exchange efficiency of carbon dioxide and carbide liquid, and the outlet of calcium carbide grain is arranged in
The bottom in gas distributed area.
Specifically, rotating disk is arranged in the underface of carbide liquid entrance so that the carbide liquid entered through carbide liquid entrance
(1800~2200 degrees Celsius) are fallen in rotating disk under gravity, under the centrifugal action that rotation disc spins are produced,
The scattered periphery for flowing to rotating disk of carbide liquid, the cold carbon dioxide gas stream effect with being sprayed through carbon dioxide distribution plate, makes
Calcium carbide liquid film shearing splitting is scattered in calcium carbide granulation tower into drop, carbide liquid drop in dropping process with calcium carbide granulation tower bottom
The up cold carbon dioxide heat exchange of side wall supply, because surface tension effects carbide liquid is dropped in during gradually cooling and solidifying
Be punctured into it is spherical, obtain calcium carbide grain (800~1100 degrees Celsius, 0.5~5mm of granularity) be arranged at the electricity of gas distributed area bottom
Larger particles are as calcium carbide product after further cooling and screening for the outlet discharge of stone grain, wherein calcium carbide grain, the less electricity of particle diameter
Stone grain is supplied into follow-up nitriding furnace through conveying worm, and the carbon dioxide after exchanging heat is from being arranged in changing for heat transfer zone top
Carbon dioxide outlet is discharged after heat.
Nitridation reaction space 21 and gas distribution are limited in embodiments in accordance with the present invention, nitriding furnace 200 from top to bottom
Space 22.Specifically, in order to ensure the material nitridation reaction residence time, improving the quality of lime nitrogen product, nitriding furnace can be
Fluidized bed type nitriding furnace, the practicable multiple nitriding furnace series connection of the fluidized bed type nitriding furnace, or recirculating fluidized bed nitriding furnace is used, from
And nitriding temperature control requirement is ensure that, and lime nitrogen product nitrogen content is improved, and nitridation reaction space is cylinder-like structure,
Barrel is water-cooling jacket or refractory material laying, and gas distribution space can be pyramidal structure.
According to one embodiment of present invention, there is gas after calcium carbide grain entrance 201 and nitridation to export in nitridation reaction space 21
202, calcium carbide grain entrance 201 is connected with calcium carbide grain outlet 105.Specifically, calcium carbide grain entrance can be arranged in nitridation reaction space
Side wall on, after nitridation gas outlet can be arranged in the top in nitridation reaction space.
According to still a further embodiment, gas distribution space 22 is disposed with nitrogen inlet 203 and granular lime nitrogen
Outlet 204 and nitrogen distributor 23.Specifically, nitrogen inlet can be arranged on the side wall of gas distribution space, granular lime
Nitrogen outlet can be arranged in the bottom of gas distribution space, and (nitrogen distributor can be more for arrangement thereon for nitrogen distributor
The gas distribution grid in hole) close to nitrogen inlet arrangement, nitrogen is distributed after entering gas distribution space through nitrogen inlet by nitrogen
Calcium carbide grain after device is scattered in the up space with nitridation reaction contacts generation nitridation reaction, obtains granular lime nitrogen, and invent
People has been surprisingly found that, because nitridation reaction is an exothermic reaction, the quickening of reaction speed at high temperature makes instead by many experiments
Answer heat is substantial amounts of to release, more promote the raising of furnace temperature, still, nitridation reaction is a reversible reaction again, at 1100 DEG C, cyanogen ammonia
The reaction of formation for changing calcium (lime nitrogen) is very fast, when below 1130 DEG C, and nitrolim is also stablized, when temperature rises from 1130 DEG C
At up to 1200 DEG C, nitridation conditions start to deteriorate, and the content of nitrogen just declines in nitrolim, that is to say, that nitridation reaction it is converse
Speed is answered to accelerate, between 1220 DEG C~1390 DEG C, moreover it is possible to see the reaction of formation of nitrolim, and when more than 1400 DEG C,
Serious decomposition reaction occurs for nitrolim, therefore the application is from the calcium carbide grain temperature that calcium carbide granulation tower is obtained by controlling
800~1100 degrees Celsius, the yield that nitrolim is improved during nitridation reaction can be caused, and nitrogen contains in nitrolim
Amount is higher.
There is embodiments in accordance with the present invention, the first cyclone separator 300 gas after gaseous mixture entrance 301, the first dedusting to go out
Mouth 302 and the dust outlet 303 containing lime nitrogen powder and carbon black, gaseous mixture entrance 301 are connected with gas outlet 202 after nitridation,
And supplied suitable for gas after the nitridation that will be obtained in nitriding furnace separating treatment is carried out into the first cyclone separator, so as to separate
Obtain gas and the dust containing lime nitrogen powder and carbon black after the first dedusting.Thus, dust in gas is not only reduced after dedusting, is carried
The high quality of gained lime nitrogen, and the waste of resource can be avoided.
Embodiments in accordance with the present invention, powder separation device 400 has mixed dust entrance 401, lime nitrogen powder outlet 402
With carbon black outlet 403, mixed dust entrance 401 is connected with the dust outlet 303 containing lime nitrogen powder and carbon black, and is suitable to the
Gas supplies into powder separation device and carries out separating treatment after the first isolated dedusting in one cyclone separator, so as to
Respectively obtain lime nitrogen powder and carbon black.Thus, cyclonic separation and powder point are carried out by gas after the nitridation to being obtained in nitriding furnace
From the carbon black products of high added value can be obtained.Specifically, powder separation device can be pneumatic separator or wet flotation equipment
Or rotary filter press equipment, by taking screening installation as an example, initial gross separation, lime nitrogen powder are carried out using lime nitrogen powder is different from specific gravity of black
As product or further granulation, the further wet cleaning of coarse carbon black product, the principle using flotation or rotary filter press is divided
From pure carbon black products are obtained, product quality reaches acetylene carbon black quality standard, and the waste liquid that separation process is produced is used as liquid
Fertilizer is sold.
Calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention is by by carbide liquid and carbon dioxide
Supply into the internal calcium carbide granulation tower with rotary pelleting machine, wherein, a part of carbon dioxide is supplied to rotary pelleting machine rotation
The carbon dioxide distribution plate of rotating disk lower end, causes rotating disk centrifugation edge calcium carbide liquid film point under carbon dioxide gas stream dissection
Dissipate to be granular, i.e., liquid crushing is carried out to carbide liquid, while by another part carbon dioxide from the side of the bottom of calcium carbide granulation tower
Wall is supplied, and realizes and the granulated carbide liquid of whereabouts is cooled down and solidified, and carbon dioxide is heated, i.e. carbon dioxide recovery
The sensible heat of carbide liquid, then by the grain supply of obtained calcium carbide into nitriding furnace so that calcium carbide grain and the nitrogen of high temperature carry out nitrogen
Change reaction and obtain granular lime nitrogen, while gas can obtain charcoal through cyclonic separation and powder separation after the nitridation obtained in nitriding furnace
Black and lime nitrogen powder.Thus, granulated carbide, lime nitrogen and carbon black can be obtained simultaneously using the system, and it is not only effectively sharp
With the sensible heat of carbide liquid, and eliminate broken lime nitrogen production process raw material of the prior art, milling and raw material heating
Link, reduces energy consumption and the investment of granular lime nitrogen production process.
With reference to Fig. 2, calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention further comprises：The
One ceramic filter 500, the first waste heat boiler 600 and gas heat exchanger 700.
Embodiments in accordance with the present invention, the first ceramic filter 500 has gas entrance 501, nitrogen outlet after the first dedusting
502 and mixed dust outlet 503, gas entrance 501 is exported with gas after the first dedusting and 302 is connected after the first dedusting, and mixed dust goes out
Mouth 503 is connected with mixed dust entrance 401, and suitable for gas after dedusting isolated in the first cyclone separator is filtered
Processing, isolated nitrogen and the mixed dust containing lime nitrogen powder and carbon black, and isolated is contained into lime nitrogen powder
Supplied with the mixed dust of carbon black into powder separation device and reclaim carbon black and lime nitrogen.
Embodiments in accordance with the present invention, the first waste heat boiler 600 has the first air inlet 601, the and of the first steam (vapor) outlet 602
Nitrogen outlet 603 after heat exchange, the first air inlet 601 is connected with nitrogen outlet 502, and suitable for will be separated in the first ceramic filter
Obtained nitrogen, which is supplied, produces steam into waste heat boiler, and the steam can be used as thermal source or power source.Thus, it is possible to effectively sharp
With waste heat in system, so as to significantly reduce energy consumption while realizing that resource is maximally utilized.
Embodiments in accordance with the present invention, gas heat exchanger 700 has nitrogen inlet 701, carbon dioxide entrance 702 and hot nitrogen
Carbon dioxide outlet 704 behind gas outlet 703 and cooling, nitrogen inlet 701 is connected with nitrogen outlet 603 after heat exchange, and hot nitrogen goes out
Mouthfuls 703 are connected with nitrogen inlet 203, and are suitable to what is obtained after the heat exchange that will be obtained in waste heat boiler in nitrogen and calcium carbide granulation tower
Carbon dioxide is exchanged heat after heat exchange, to be heated to nitrogen, nitrogen and carbon dioxide after cooling after being exchanged heat, and will
(600-900 DEG C) supply of nitrogen participates in nitridation reaction into nitriding furnace after obtained heat exchange.Specifically, gas heat exchanger is indirect
Heat exchange, i.e. shell-and-tube heat exchanger, tube side walk carbon dioxide, and shell side walks nitrogen.Thus, the circulation of nitrogen in system is not only realized
Utilize, and effectively reclaimed waste heat in system, so as to significantly reduce production cost.
With reference to Fig. 3, calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention further comprises：The
Two cyclone separators 800, the second ceramic filter 900 and the second waste heat boiler 1000.
Embodiments in accordance with the present invention, the second cyclone separator 800 has carbon dioxide entrance 801 after cooling, contains two
Gas outlet 802 and the first dust outlet 803 after first dedusting of carbonoxide, carbon dioxide entrance 801 and after cooling two after cooling
Carbon oxide outlet 704 is connected, and carries out separating treatment suitable for carbon dioxide after the cooling that will be obtained in gas heat exchanger, so as to point
From obtaining gas after dust and the second dedusting containing carbon dioxide.
Embodiments in accordance with the present invention, the second ceramic filter 900 has gas entrance 901, the second dust after the second dedusting
Outlet 902 and carbon dioxide outlet 903, gas entrance 901 is connected with gas outlet 802 after the second dedusting after the second dedusting, and is suitable to
Gas after isolated the second dedusting containing carbon dioxide in second cyclone separator is subjected to filtration treatment, so as to obtain the
Two dust and carbon dioxide.
Embodiments in accordance with the present invention, the second waste heat boiler 1000 has the second air inlet 1001, the second steam (vapor) outlet
1002 and cold carbon dioxide outlet 1003, the second air inlet 1001 is connected with carbon dioxide outlet 903, cold carbon dioxide outlet
1003 are connected with the first carbon dioxide entrance 103 and the second carbon dioxide entrance 104 respectively, and are suitable to the second ceramic filter
Isolated carbon dioxide, which is supplied into the second waste heat boiler, in device produces steam, and by obtained cold carbon dioxide supply to
Used in calcium carbide granulation tower respectively as the first carbon dioxide and the second carbon dioxide.Thus, not only it is effectively utilized more than system
Heat, and recycling for carbon dioxide is realized, so as to reduce energy consumption while production cost is reduced.
It is selected from down as described above, calcium carbide according to embodiments of the present invention, lime nitrogen and carbon black Joint Production system can have
At least one advantage of row：
Calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention makes full use of carbide liquid latent heat, enters
Row liquid is crushed, the nitridation of calcium carbide powder body heat state, reduces system energy consumption, is reduced calcium carbide crushing, levigate equipment and calcium carbide powder and is added again
Hot equipment investment；
Calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention cuts liquid using rotating disk air-flow
Prilling process, obtains the particle diameter needed for fluid bed nitridation；
" samming reacts calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention using fluid bed
Device ", effectively control lime nitrogen nitriding temperature, using fluid bed series connection or circulating fluid bed reactor form, it is ensured that nitridation is stopped
Time, make reaction quick, complete, obtain high nitrogen-containing and granular lime nitrogen product；
Calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention uses CO2Utilized with nitrogen circulation,
UTILIZATION OF VESIDUAL HEAT IN is realized simultaneously, reduces production cost；
Calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention is by calcium carbide and nitrogen byproduct of reaction
Carbon materials is reclaimed, purification, obtains the carbon material of high added value；
Calcium carbide, lime nitrogen and carbon black Joint Production system according to embodiments of the present invention effectively controls calcium carbide granularity and nitridation
Stove delivery rate, effectively control nitriding temperature and speed, it is ensured that product quality；
Calcium carbide according to embodiments of the present invention, lime nitrogen and the whole process system of carbon black Joint Production system are continuous, closed
Operation, improves calcium carbide production, lime nitrogen production process high energy consumption, heavy-polluted problem.
In another aspect of the invention, the present invention is proposed implements calcium carbide, lime nitrogen and carbon black connection using said system
Combination production method.Embodiments in accordance with the present invention, with reference to Fig. 4, this method includes：
S100：Carbide liquid is supplied into calcium carbide granulation tower and made with the first carbon dioxide and the second carbon dioxide exposure
Grain
In the step, specifically, the carbide liquid entered through carbide liquid entrance (1800~2200 degrees Celsius) is made in gravity
Fallen under in rotating disk, under the centrifugal action that rotation disc spins are produced, the scattered circumference for flowing to rotating disk of carbide liquid
Periphery, the cold carbon dioxide gas stream effect with being sprayed through carbon dioxide distribution plate, makes calcium carbide liquid film shearing splitting into drop, disperses
In calcium carbide granulation tower, carbide liquid drops in the up cold carbon dioxide supplied in dropping process with calcium carbide granulation tower bottom end side wall
Heat exchange, due to surface tension effects carbide liquid drop in gradually cooling and solidifying during be punctured into it is spherical, obtain calcium carbide grain (800~
1100 degrees Celsius, 0.5~5mm of granularity) the calcium carbide grain outlet discharge of gas distributed area bottom is arranged at, wherein calcium carbide grain is through entering
Larger particles are as calcium carbide product after one step is cooled down and sieved, and particle diameter small electric stone is supplied to follow-up nitridation through conveying worm
In stove, and the carbon dioxide after exchanging heat is discharged from carbon dioxide outlet after the heat exchange on heat transfer zone top is arranged in.
S200：Calcium carbide grain supply is contacted into progress nitridation reaction into nitriding furnace with nitrogen
In the step, specifically, nitrogen enter gas distribution space through nitrogen inlet after after nitrogen distributor is scattered
Calcium carbide grain in the up space with nitridation reaction, which contact, occurs nitridation reaction, obtains granular lime nitrogen, and inventor pass through it is big
Amount experiment has been surprisingly found that, because nitridation reaction is an exothermic reaction, the quickening of reaction speed at high temperature makes reaction heat a large amount of
Releasing, more promote the raising of furnace temperature, still, nitridation reaction is a reversible reaction again, at 1100 DEG C, nitrolim (stone
Grey nitrogen) reaction of formation it is very fast, when below 1130 DEG C, nitrolim also stablize, when temperature is increased to from 1130 DEG C
At 1200 DEG C, nitridation conditions start to deteriorate, and the content of nitrogen just declines in nitrolim, that is to say, that the back reaction speed of nitridation reaction
Degree is accelerated, between 1220 DEG C~1390 DEG C, moreover it is possible to see the reaction of formation of nitrolim, and when more than 1400 DEG C, cyanogen ammonia
Change calcium and occur serious decomposition reaction, thus the application by control from the calcium carbide grain temperature that calcium carbide granulation tower is obtained be 800~
1100 degrees Celsius, can cause during nitridation reaction improve nitrolim yield, and in nitrolim nitrogen content compared with
It is high.
S300：Gas after nitridation is supplied separating treatment is carried out into the first cyclone separator
In the step, specifically, gas supplies into the first cyclone separator after the nitridation that will be obtained in S200 nitriding furnaces
Row separating treatment, so as to gas after isolated first dedusting and the dust containing lime nitrogen powder and carbon black.Thus, not only
Dust in gas is reduced after dedusting, the quality of gained lime nitrogen is improved, and the waste of resource can be avoided.
S400：Dust containing lime nitrogen powder and carbon black is supplied into powder separation device and carries out separating treatment
In the step, specifically, gas after the first dedusting isolated in the cyclone separators of step S300 first is supplied
Separating treatment is carried out into powder separation device, so as to respectively obtain lime nitrogen powder and carbon black.Thus, by nitriding furnace
In after obtained nitridation gas carry out cyclonic separation and powder separation, the carbon black products of high added value can be obtained.Specifically, powder
Separator can be pneumatic separator or wet flotation equipment or rotary filter press equipment, by taking screening installation as an example, utilize lime nitrogen
Powder is different from specific gravity of black to carry out initial gross separation, and lime nitrogen powder granulation as product or further, coarse carbon black product is further wet
Method is purified, and carries out isolated pure carbon black products using the principle of flotation or rotary filter press, product quality reaches acetylene charcoal
Black quality standard, the waste liquid that separation process is produced is sold as liquid fertilizer.
Calcium carbide, lime nitrogen and carbon black combine production method according to embodiments of the present invention is by by carbide liquid and carbon dioxide
Supply into the internal calcium carbide granulation tower with rotary pelleting machine, wherein, a part of carbon dioxide is supplied to rotary pelleting machine rotation
The carbon dioxide distribution plate of rotating disk lower end, causes rotating disk centrifugation edge calcium carbide liquid film point under carbon dioxide gas stream dissection
Dissipate to be granular, i.e., liquid crushing is carried out to carbide liquid, while by another part carbon dioxide from the side of the bottom of calcium carbide granulation tower
Wall is supplied, and realizes and the granulated carbide liquid of whereabouts is cooled down and solidified, and carbon dioxide is heated, i.e. carbon dioxide recovery
The sensible heat of carbide liquid, then by the grain supply of obtained calcium carbide into nitriding furnace so that calcium carbide grain and the nitrogen of high temperature carry out nitrogen
Change reaction and obtain granular lime nitrogen, while gas can obtain charcoal through cyclonic separation and powder separation after the nitridation obtained in nitriding furnace
Black and lime nitrogen powder.Thus, granulated carbide, lime nitrogen and carbon black can be obtained simultaneously using this method, and it is not only effectively sharp
With the sensible heat of carbide liquid, and eliminate broken lime nitrogen production process raw material of the prior art, milling and raw material heating
Link, reduces energy consumption and the investment of granular lime nitrogen production process.
With reference to Fig. 5, calcium carbide, lime nitrogen and carbon black combine production method according to embodiments of the present invention further comprises：
S500：Gas after first dedusting is supplied filtration treatment is carried out into the first ceramic filter, and mixed dust is supplied
To in the powder separation device into step S400
In the step, specifically, gas after dedusting isolated in the cyclone separators of step S300 first is filtered
Processing, isolated nitrogen and the mixed dust containing lime nitrogen powder and carbon black, and isolated is contained into lime nitrogen powder
Supplied with the mixed dust of carbon black into powder separation device and reclaim carbon black and lime nitrogen.
S600：Nitrogen is supplied into the first waste heat boiler and carries out heat exchange processing
In the step, specifically, nitrogen isolated in the ceramic filters of step S500 first is supplied to waste heat pot
Steam is produced in stove, the steam can be used as thermal source or power source.Thus, it is possible to waste heat in system is effectively utilized, so that
Realizing significantly reduces energy consumption while resource is maximally utilized.
S700：Nitrogen after heat exchange is supplied into gas heat exchanger and carries out heat exchange processing with nitrogen after heat exchange, and will heat exchange
Nitrogen supplies the nitriding furnace into step S200 afterwards
In the step, specifically, the heat exchange that will be obtained in nitrogen after the heat exchange obtained in waste heat boiler and calcium carbide granulation tower
Carbon dioxide is exchanged heat afterwards, to be heated to nitrogen, nitrogen and carbon dioxide after cooling after being exchanged heat, and will be obtained
Heat exchange after (600-900 DEG C) supply of nitrogen nitridation reaction is participated in into nitriding furnace.Specifically, gas heat exchanger is to change indirectly
Heat, i.e. shell-and-tube heat exchanger, tube side walk carbon dioxide, and shell side walks nitrogen.Thus, the circulation profit of nitrogen in system is not only realized
With, and waste heat in system has effectively been reclaimed, so as to significantly reduce production cost.
With reference to Fig. 6, calcium carbide, lime nitrogen and carbon black combine production method according to embodiments of the present invention further comprises：
S800：Mixed gas is supplied separating treatment is carried out into the second cyclone separator
In the step, specifically, carbon dioxide after the cooling obtained in gas heat exchanger is supplied to the second cyclonic separation
Device carries out separating treatment, gas after the first dedusting so as to isolated first dust and containing carbon dioxide.
S900：Gas after second dedusting is supplied filtration treatment is carried out into the second ceramic filter
In the step, specifically, by after isolated the second dedusting containing carbon dioxide in the second cyclone separator
Gas carries out filtration treatment, so as to obtain the second dust and carbon dioxide.
S1000：By carbon dioxide supply into the second waste heat boiler carry out heat exchange processing, and by cold carbon dioxide supply to
Calcium carbide granulation tower in step S100
In the step, specifically, carbon dioxide isolated in the second ceramic filter is supplied to the second waste heat pot
Steam is produced in stove, and obtained cold carbon dioxide is supplied into calcium carbide granulation tower as the first carbon dioxide and second
Carbon dioxide is used.Thus, system waste heat is not only effectively utilized, and realizes recycling for carbon dioxide, from
And energy consumption can be reduced while production cost is reduced.Thus, system waste heat is not only effectively utilized, and realizes dioxy
Change recycling for carbon gas, so as to reduce energy consumption while production cost is reduced.
It should be noted that the above-mentioned feature and advantage described by calcium carbide, lime nitrogen and carbon black Joint Production system
The method of the calcium carbide, lime nitrogen and carbon black Joint Production is equally applicable to, here is omitted.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only description
Property, without limiting the present invention in any way.
Embodiment
The carbide liquid (1800~2200 degrees Celsius) that calcium carbide furnace liquid outlet port is released is fitted into calcium carbide crucible, by workshop overhead traveling crane
Carbide liquid medial launder is poured at the top of lifting to calcium carbide granulation tower, medial launder rate of discharge is controlled, rotation is flow to certain altitude and made
The rotating disk top of grain machine, the centrifugal force produced by rotation disc spins, carbide liquid is scattered to be flow under periphery and rotating disk
The cold conditions CO that portion's distribution plate sprays2Airflow function, makes air-flow spray cutting calcium carbide liquid film at a high speed, is formed with rotating disk formation slit
Drop, and the rotating speed of rotating disk uses frequency Varying and speed changing method, as adjust rotating and gas flow rate it is controllable obtained by
Calcium carbide grain granule size makes calcium carbide liquid film shearing splitting into drop, is scattered in granulation tower, carbide liquid drop dropping process and calcium carbide
The up cold CO of granulation tower bottom side of the wall supply2Gas exchanges heat, because surface tension effects drop is gradually cooling and solidifying process
It is punctured into spherical, obtains calcium carbide grain, granulation tower wall construction is water-cooling wall, and water-cooling wall is coil pipe or tubulation form, and tubulation sets carbonization
Silica fire resistant coating, water-cooling wall uses forced heat-exchanging, and the rotating disk and rotary shaft of rotary pelleting machine are added water cold using heat resisting steel
Structure, calcium carbide granulation tower bottom side of the wall supply carbon dioxide distribution mode is used sets a conical gas point in gas distributed area
Fabric swatch, solidify balling-up calcium carbide grain in it is a part of can be put into as product in calcium carbide cooling bath, entered by storage tank chuck reclaimed water
One step is cooled down, and is then finally cooled down by conveying worm feeding roller cooler, cools down 100 DEG C of final temperature, and another
Part calcium carbide grain (800~1100 degrees Celsius, 0.5~2mm of particle size range) is delivered to nitriding furnace by conveying worm and connect with nitrogen
Touch and participate in nitridation reaction, nitriding furnace is fluid bed form, structure of reactor is that bottom is taper, tapering provided with gas distribution grid and
Gas distributing chamber, reactor top is cylindrical shape, and barrel is water-cooling jacket or refractory material laying, and fluidizing agent namely reaction are former
Expect nitrogen, conveying worm uses frequency control, controls charging rate, samming Rapid Nitriding purpose is realized, in order that calcium carbide is complete
Full nitridation, is reached more than critical entrainment flow velocity using ciculation fluidized nitridation, i.e. nitrogen flow rate, and nitrogen carries part calcium carbide grain and goes out nitrogen
Change stove and enter the first cyclone separator, after gas solid separation, solid material supplies into powder separation device isolated carbon black
With lime nitrogen powder, sample examination lime nitrogen content is up to 80%, and nitrogen content reaches more than 28%, and is separated in the first cyclonic separation
To dedusting after gas supply proceed into ceramic filter separation, obtain nitrogen and dust, gained dust is supplied to powder
The separation of carbon black and lime nitrogen powder is carried out in separator, so that powder separation device is pneumatic separator as an example, using lime nitrogen with
Specific gravity of black difference carries out initial gross separation, powdered lime nitrogen granulation, the further wet method of coarse carbon black product as product or further
Purification, carries out isolated pure carbon black products, product quality reaches acetylene carbon black using the principle of flotation or rotary filter press
Quality standard, the waste liquid that separation process is produced is sold as liquid fertilizer, and the nitrogen obtained in ceramic filter is supplied to the
Steam is produced in one waste heat boiler, while recovery waste heat, the steam of generation is further utilized, the calcium carbide grain obtained in nitriding furnace enters
Enter lime nitrogen slot type cooler, then finally cooled down through conveying worm feeding roller cooler, chilling temperature is less than 100
DEG C, obtain the product (nitrogen content 28%) of granular lime nitrogen content more than 80%, and the nitrogen after the first residual heat boiler for exchanging heat
Supply into gas heat exchanger and to be exchanged heat with carbon dioxide after the heat exchange that is obtained in calcium carbide granulation tower, nitrogen after obtained heat exchange
(600-900 DEG C) supply participates in nitridation reaction into nitriding furnace, and carbon dioxide is supplied into the second cyclone separator after cooling
Separating treatment is carried out, then gas and the second dust after the isolated dedusting containing carbon dioxide contain titanium dioxide by what is obtained
Gas, which is supplied, after the dedusting of carbon carries out filtration treatment into the second ceramic filter, obtains the second dust and carbon dioxide, then
Carbon dioxide is supplied into the second waste heat boiler and produces steam, the carbon dioxide after heat exchange, which is returned in calcium carbide granulation tower, to be made
It is that the first carbon dioxide and the second carbon dioxide are used.
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 with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
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. a kind of calcium carbide, lime nitrogen and carbon black Joint Production system, it is characterised in that including：
Heat transfer zone and gas distributed area, the heat transfer zone tool are limited in calcium carbide granulation tower, the calcium carbide granulation tower from top to bottom
There is rotary pelleting machine, the rotary pelleting machine includes rotating disk and is arranged in the rotary shaft of the rotating disk lower end, the rotation
The arranged beneath of disk, which has close to the edge of the rotating disk to have on carbon dioxide distribution plate, the carbon dioxide distribution plate, to be opened
The first carbon dioxide entrance, first carbon monoxide inlet and the interior of rotating shaft are disposed with hole, the rotary shaft
Carbon dioxide channel is connected, and the carbon dioxide distribution plate is connected with the carbon dioxide channel, the heat transfer zone upper end arrangement
There is carbon dioxide outlet after carbide liquid entrance and heat exchange, the gas distributed area is disposed with the second carbon dioxide entrance and calcium carbide grain
Outlet, and it is disposed with carbon dioxide distribution grid in the second carbon dioxide porch；
Nitridation reaction space and gas distribution space, the nitridation reaction are limited in nitriding furnace, the nitriding furnace from top to bottom
There is gas after calcium carbide grain entrance and nitridation to export in space, and the calcium carbide grain entrance is connected with the outlet of calcium carbide grain, the gas
Distribution space is disposed with nitrogen inlet and the outlet of granular lime nitrogen, and is disposed with the nitrogen inlet nitrogen distributor；
There is first cyclone separator, first cyclone separator gas after gaseous mixture entrance, the first dedusting to export and contain stone
The dust outlet of grey nitrogen powder and carbon black, the gaseous mixture entrance is connected with gas outlet after the nitridation；
Powder separation device, the powder separation device has mixed dust entrance, the outlet of lime nitrogen powder and carbon black outlet, described
Mixed dust entrance is connected with the dust outlet containing lime nitrogen powder and carbon black.
2. system according to claim 1, it is characterised in that further comprise：
First ceramic filter, first ceramic filter has gas entrance, nitrogen outlet and mixed dust after the first dedusting
Outlet, gas entrance is connected with gas outlet after first dedusting after first dedusting, and the mixed dust outlet is mixed with described
Dust inlet is closed to be connected；
First waste heat boiler, nitrogen outlet after first waste heat boiler has the first air inlet, the first steam (vapor) outlet and exchanged heat,
First air inlet is connected with the nitrogen outlet；
Gas heat exchanger, the gas heat exchanger have nitrogen inlet, carbon dioxide entrance and hot nitrogen outlet and cooling after two
Carbon oxide outlet, the nitrogen inlet is connected with nitrogen outlet after the heat exchange, the hot nitrogen outlet and the nitrogen inlet
It is connected.
3. system according to claim 2, it is characterised in that further comprise：
Second cyclone separator, second cyclone separator has carbon dioxide entrance after cooling, the containing carbon dioxide
Gas outlet and the first dust outlet after two dedustings, carbon dioxide entrance and carbon dioxide outlet after the cooling after the cooling
It is connected；
Second ceramic filter, second ceramic filter has gas entrance, the second dust outlet and dioxy after the second dedusting
Change carbon outlet, gas entrance is connected with gas outlet after second dedusting containing carbon dioxide after second dedusting；
Second waste heat boiler, second waste heat boiler has the second air inlet, the second steam (vapor) outlet and cold carbon dioxide outlet,
Second air inlet is connected with the carbon dioxide outlet, the cold carbon dioxide outlet respectively with first carbon dioxide
Entrance is connected with the second carbon dioxide entrance.
4. the system any one of a kind of utilization claim 1-3 implements calcium carbide, lime nitrogen and carbon black combine production method,
It is characterised in that it includes：
(1) carbide liquid is supplied into the calcium carbide granulation tower and contacts and made with the first carbon dioxide and the second carbon monoxide
Grain, to obtain carbon dioxide after calcium carbide grain and heat exchange；
(2) calcium carbide grain supply is contacted into progress nitridation reaction into the nitriding furnace with nitrogen, to obtain granular lime
Gas after nitrogen and nitridation；
(3) gas after the nitridation is supplied and carries out separating treatment into first cyclone separator, to obtain the first dedusting
Gas and the dust containing lime nitrogen powder and carbon black afterwards；
(4) dust containing lime nitrogen powder and carbon black is supplied and separating treatment is carried out into the powder separation device, with
Just lime nitrogen powder and carbon black are obtained.
5. method according to claim 4, it is characterised in that further comprise：
(5) gas after first dedusting is supplied and carries out filtration treatment into first ceramic filter, to obtain nitrogen
And mixed dust, and the mixed dust supplied in the powder separation device into step (4)；
(6) nitrogen is supplied into first waste heat boiler and carries out heat exchange processing, to obtain the first steam and heat exchange
Nitrogen afterwards；
(7) nitrogen after the heat exchange is supplied into the gas heat exchanger and carries out heat exchange processing with nitrogen after the heat exchange, with
Just carbon dioxide after hot nitrogen and cooling is obtained, and the hot nitrogen is supplied into the nitriding furnace into step (2).
6. method according to claim 5, it is characterised in that further comprise：
(8) carbon dioxide after the cooling is supplied and carries out separating treatment into second cyclone separator, to be contained
There are gas and the first dust after the second dedusting of carbon dioxide；
(9) gas after second dedusting containing carbon dioxide is supplied into second ceramic filter and carried out at filtering
Reason, to obtain the second dust and carbon dioxide；
(10) carbon dioxide is supplied into second waste heat boiler and carries out heat exchange processing, to obtain cold carbon dioxide
With the second steam, and the cold carbon dioxide is supplied into step (1) it is used as first carbon dioxide and/or described second
Carbon dioxide is used.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108557842A (en) * | 2018-04-16 | 2018-09-21 | 平罗县祥美化工有限公司 | The dustless production technology and its equipment of high product lime nitrogen |
| CN111453714A (en) * | 2020-05-19 | 2020-07-28 | 浙江工业大学 | Treatment method for improving specific surface area of carbon material |
-
2017
- 2017-06-14 CN CN201710449266.8A patent/CN107128923A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108557842A (en) * | 2018-04-16 | 2018-09-21 | 平罗县祥美化工有限公司 | The dustless production technology and its equipment of high product lime nitrogen |
| CN111453714A (en) * | 2020-05-19 | 2020-07-28 | 浙江工业大学 | Treatment method for improving specific surface area of carbon material |
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