CN110726297A - Drying device for wet granulation cracking of carbon black - Google Patents
Drying device for wet granulation cracking of carbon black Download PDFInfo
- Publication number
- CN110726297A CN110726297A CN201911072321.1A CN201911072321A CN110726297A CN 110726297 A CN110726297 A CN 110726297A CN 201911072321 A CN201911072321 A CN 201911072321A CN 110726297 A CN110726297 A CN 110726297A
- Authority
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- China
- Prior art keywords
- roller
- carbon black
- drying
- hot air
- wet granulation
- Prior art date
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- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 52
- 239000006229 carbon black Substances 0.000 title claims abstract description 35
- 238000005550 wet granulation Methods 0.000 title claims abstract description 16
- 238000005336 cracking Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000000197 pyrolysis Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 27
- 239000000463 material Substances 0.000 description 16
- 239000002245 particle Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000010920 waste tyre Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
-
- 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
- C09C1/56—Treatment of carbon black ; Purification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a drying device for wet granulation cracking of carbon black, which comprises a roller dryer, wherein the roller dryer comprises a drying roller, a front end sealing bin, a rear end sealing bin and a hot air system, the drying roller comprises a shell and an inner roller, a cavity is formed between the shell and the inner roller, the hot air system comprises a hot air furnace, a tail gas combustion furnace, a hot air pipeline and a regulating valve, and an exhaust port of the hot air system is communicated with the inner roller and the cavity through a first air inlet positioned on the side wall of the front end sealing bin and a second air inlet positioned on the side wall of the shell respectively; and a first air outlet communicated with the cavity is formed in the side wall of the rear end of the inner roller, and a second air outlet communicated with the inner roller is formed in the top of the rear end sealing bin. Through the mutual hot-blast system that provides of governing valve control tail gas combustion furnace and hot-blast furnace, to pyrolysis carbon black granule even heating in the cylinder, realize drying temperature's accurate regulation, improve drying efficiency.
Description
Technical Field
The invention relates to the technical field of scrap tire thermal cracking equipment, in particular to a drying device for wet granulation cracking of carbon black.
Background
The general treatment method for recycling the waste tires comprises the steps of cutting the whole tire bead, crushing the tire, and preparing the crushed pieces into rubber powder and reclaimed rubber or pyrolyzing the rubber powder and the reclaimed rubber. The thermal cracking technology of the waste tires is that rubber macromolecules of the waste tires are cracked into pyrolysis gas, pyrolysis oil and pyrolysis carbon black at a specific temperature under the condition of oxygen deficiency or the existence of inert gas, the generated pyrolysis gas is an energy source for pyrolysis of the waste tires, the generated oil and the carbon black are main products for pyrolysis of the waste tires, and the regenerated carbon black is a key product for pyrolysis of the tires. The pyrolytic carbon black can be used as a raw material for manufacturing tires after grinding, modification, granulation, drying and screening.
Currently, there are several forms for drying: various specifications of dryers such as drum dryers, fluidized bed dryers, spray granulation dryers, spray dryers, air flow dryers, belt dryers, box dryers, vacuum freeze dryers, hot-blast stoves, and the like.
Among them, the most suitable dryers for drying the cracked carbon black include fluidized bed dryers and drum dryers, but the fluidized bed dryers consume much energy and are expensive in equipment. Although the roller dryer has lower energy consumption and lower equipment manufacturing cost, is more economical and applicable, the feeding and the feeding of wet carbon black particles are not smooth, so that the material accumulation influences the drying effect.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention aims to provide a drying device for wet granulation of cracked carbon black.
In order to realize the purpose, the following technical scheme is adopted:
a drying device for wet granulation cracking of carbon black comprises a roller dryer, wherein the roller dryer comprises a drying roller, a front end sealing bin, a rear end sealing bin and a hot air system, the drying roller comprises a shell and an inner roller, a cavity is formed between the shell and the inner roller, the hot air system comprises a hot blast stove, a tail gas combustion furnace, a hot blast pipeline and a regulating valve, and an exhaust port of the hot air system is communicated with the inner roller and the cavity through a first air inlet located in the side wall of the front end sealing bin and a second air inlet located in the side wall of the shell respectively; and a first air outlet communicated with the cavity is formed in the side wall of the rear end of the inner roller, and a second air outlet communicated with the inner roller is formed in the top of the rear end sealing bin.
Furthermore, the bottom of the front end sealing bin is provided with an arc-shaped sealing cover, the bottom of the front end sealing bin is provided with a rotary material raising impeller, and the rotating radius of the rotary material raising impeller is matched with the arc radius of an inner cavity of the arc-shaped sealing cover.
Further, the blades on the rotary lifting impeller are arc-shaped, and the rotating direction of the blades is consistent with the air inlet direction.
Furthermore, the position of the central shaft of the rotary winnowing impeller is lower than the opening position of the first air inlet.
Furthermore, a shoveling plate is arranged on the inner wall of the inner roller.
Furthermore, a ventilation opening is formed in the shoveling plate.
Further, the drying roller is connected with the front end sealing bin and the rear end sealing bin through sealing structures.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the drying device, the high-temperature tail gas generated by carbon black cracking is fully utilized, the tail gas combustion furnace and the hot blast stove are controlled through the regulating valve to provide a hot blast system in an interactive mode, hot blast enters the inner roller and a cavity between the inner roller and the shell, uniform heating of the cracked carbon black particles in the roller is achieved, and the drying efficiency is improved.
(2) In the drying process, the proportion of hot air and high-temperature tail gas of the hot-blast stove input into the inner roller or the cavity is selected and controlled according to the condition of tail gas in the tail gas combustion furnace and the condition of hot air in the hot-blast stove, so that the drying temperature in the inner roller is effectively controlled, the temperature in the roller is accurately regulated, and the tail gas in the carbon black cracking process is effectively utilized as a heat supply source.
(3) The bottom is the front end sealed storehouse of arc structure and the cooperation of rotatory material impeller of raising, and the crooked direction of rotatory material impeller of raising is unanimous with the air inlet direction, need not to be connected with power device, make rotatory material impeller of raising clockwise rotation under the drive of hot-blast effect, the front end edge of blade plays the scraper blade effect, fully drive the material of front end sealed storehouse bottom and carry to the interior cylinder in, avoid the material accumulation on the one hand, on the other hand realizes the even heating to carbon black granule material under the hot-blast effect, and the drying efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a drying device for wet granulation pyrolysis of carbon black of the present invention;
fig. 2 is a schematic cross-sectional structure of a drying drum in the drying device of the present invention.
Description of the drawings: 1-drying the roller; 2-front end sealing cabin; 3-rear end sealing cabin; 4-hot blast stove; 5-a tail gas combustion furnace; 6-hot air pipeline; 7-a regulating valve; 8-shovelling plates; 9-a granulation system; 10-a screening device; 11-a tail gas treatment system; 101-a housing; 102-an inner drum; 103-a cavity; 104-a first air inlet; 105-a second air inlet; 106-a first outlet; 107-a second air outlet; 201-arc sealing cover; 202-rotating a material raising impeller; 801-vent.
Detailed Description
The following describes in detail specific embodiments of the present invention with reference to specific examples. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the drying device for wet granulation pyrolysis of carbon black provided in the embodiment of the present invention includes a drum dryer, the drum dryer includes a drying drum 1, a front end sealing bin 2, a rear end sealing bin 3, and a hot air system, the drying drum 1 includes a housing 101 and an inner drum 102, a cavity 103 is formed between the housing 101 and the inner drum 102, the hot air system includes a hot air furnace 4, a tail gas combustion furnace 5, a hot air pipeline 6, and a regulating valve 7, an exhaust port of the hot air system is respectively communicated with the inner drum 102 and the cavity 103 through a first air inlet 104 located in a side wall of the front end sealing bin 2 and a second air inlet 105 located in a side wall of the housing 101; a first air outlet 106 communicated with the cavity 103 is arranged on the side wall of the rear end of the inner roller 102, and a second air outlet 107 communicated with the inner roller 102 is arranged on the top of the rear end sealed cabin 3.
The working principle is as follows: during operation, carbon black particles obtained by the granulation system 9 enter the inner drum 102 through the front end sealing bin 2, meanwhile, a part of high-temperature tail gas passing through the tail gas combustion furnace 5 and/or hot air in the hot air furnace enters the inner drum 102 through the first air inlet 104, and the other part of the high-temperature tail gas passes through the second air inlet 105 and enters the cavity 103 between the shell 101 and the inner drum 102, so that the carbon black particles inside the inner drum 102 are sufficiently heated and dried. The hot gas and/or the tail gas after heat exchange are discharged out of the drying drum 1 through the first air outlet 106 and the second air outlet 107 respectively, and are subjected to tail gas treatment through the tail gas treatment system 11. The control of the drying temperature of the carbon black particles in the inner drum 102 is realized by controlling the high-temperature tail gas in the tail gas combustion furnace 5 and the intake of the hot air in the hot air furnace, and the carbon black particles after being dried enter the finished product package or recycle through the screening device 10.
According to the drying device, the high-temperature tail gas generated by carbon black cracking is fully utilized, the tail gas combustion furnace and the hot blast stove are controlled through the regulating valve to provide a hot blast system in an interactive mode, hot blast enters the inner roller and a cavity between the inner roller and the shell, uniform heating of the cracked carbon black particles in the roller is achieved, and the drying efficiency is improved.
In the drying process, the proportion of hot air and high-temperature tail gas of the hot-blast stove input into the inner roller or the cavity is selected and controlled according to the condition of tail gas in the tail gas combustion furnace and the condition of hot air in the hot-blast stove, so that the drying temperature in the inner roller is effectively controlled, the temperature in the roller is accurately regulated, and the tail gas in the carbon black cracking process is effectively utilized as a heat supply source.
In order to further optimize the technical scheme, in this embodiment, the bottom of the front-end sealing bin 2 is an arc-shaped sealing cover 201, the bottom of the front-end sealing bin 2 is provided with a rotating winnowing impeller 202, and the rotating radius of the rotating winnowing impeller 202 is matched with the arc radius of an inner cavity of the arc-shaped sealing cover 201.
The blades on the rotary lifting impeller 202 are arc-shaped, and the rotating direction of the blades is consistent with the air inlet direction.
Preferably, the central axis of the rotating winnowing impeller 202 is lower than the opening position of the first air inlet 104.
The bottom is the front end sealed storehouse of arc structure and the cooperation of rotatory material impeller of raising, and the crooked direction of rotatory material impeller of raising is unanimous with the air inlet direction, need not to be connected with power device, make rotatory material impeller of raising clockwise rotation under the drive of hot-blast effect, the front end edge of blade plays the scraper blade effect, fully drive the material of front end sealed storehouse bottom and carry to the interior cylinder in, avoid the material accumulation on the one hand, on the other hand realizes the even heating to carbon black granule material under the hot-blast effect, and the drying efficiency is improved.
In this embodiment, a shoveling plate 8 is provided on the inner wall of the inner drum 102.
During operation, the carbon black particles obtained by wet granulation entering the inner drum 102 move forward continuously during the rotation of the drying drum 1 under the shoveling action of the shoveling plate 8.
More preferably, the shovelling plate 8 is provided with a vent 801. The full contact of the carbon black particles with hot air in the movement process is improved, and the drying efficiency is improved.
In this embodiment, the drying drum 1 is connected with the front end sealing bin 2 and the rear end sealing bin 3 through a sealing structure. Prevent cold wind entering drying drum 1 in, reduce drying efficiency, effectively avoid drying drum 1 in addition that the interior wind and dust granule of internal leakage, the polluted environment.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A drying device for wet granulation cracking of carbon black comprises a roller dryer, wherein the roller dryer comprises a drying roller (1), a front end sealing bin (2), a rear end sealing bin (3) and a hot air system, and is characterized in that the drying roller (1) comprises a shell (101) and an inner roller (102), a cavity (103) is formed between the shell (101) and the inner roller (102), the hot air system comprises a hot air furnace (4), a tail gas combustion furnace (5), a hot air pipeline (6) and a regulating valve (7), and an exhaust port of the hot air system is respectively communicated with the inner roller (102) and the cavity (103) through a first air inlet (104) located in the side wall of the front end sealing bin (2) and a second air inlet (105) located in the side wall of the shell (101); a first air outlet (106) communicated with the cavity (103) is formed in the side wall of the rear end of the inner roller (102), and a second air outlet (107) communicated with the inner roller (102) is formed in the top of the rear end sealing bin (3).
2. The drying device for wet granulation cracking of carbon black according to claim 1, wherein the bottom of the front end sealing bin (2) is an arc-shaped sealing cover (201), the bottom of the front end sealing bin (2) is provided with a rotary material-lifting impeller (202), and the rotating radius of the rotary material-lifting impeller (202) is matched with the arc radius of the inner cavity of the arc-shaped sealing cover (201).
3. The drying device for wet granulation pyrolysis carbon black as claimed in claim 2, wherein the blades on the rotary winnowing impeller (202) are arc-shaped, and the rotation direction of the blades is consistent with the air inlet direction.
4. The drying device for wet granulation pyrolysis carbon black as claimed in claim 3, wherein the position of the central axis of the rotary winnowing impeller (202) is lower than the opening position of the first air inlet (104).
5. The drying device for wet granulation pyrolysis carbon black of claim 1, wherein a shovelling plate (8) is arranged on the inner wall of the inner drum (102).
6. A drying device for wet granulation pyrolysis carbon black according to claim 5, characterized in that a ventilation opening (801) is provided on the shovelling plate (8).
7. The drying device for wet granulation pyrolysis carbon black according to any one of claims 1 to 6, wherein the drying drum (1) is connected with the front end sealed cabin (2) and the rear end sealed cabin (3) through a sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072321.1A CN110726297A (en) | 2019-11-05 | 2019-11-05 | Drying device for wet granulation cracking of carbon black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072321.1A CN110726297A (en) | 2019-11-05 | 2019-11-05 | Drying device for wet granulation cracking of carbon black |
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| Publication Number | Publication Date |
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| CN110726297A true CN110726297A (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911072321.1A Pending CN110726297A (en) | 2019-11-05 | 2019-11-05 | Drying device for wet granulation cracking of carbon black |
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| Country | Link |
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| CN (1) | CN110726297A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365966A (en) * | 2020-03-24 | 2020-07-03 | 江西黑猫炭黑股份有限公司 | Drying roller centralized discharging device system for carbon black production |
| CN113739561A (en) * | 2021-07-26 | 2021-12-03 | 乌海黑猫炭黑有限责任公司 | Carbon black desiccator's anti-corrosion device |
| CN115574587A (en) * | 2022-11-11 | 2023-01-06 | 青州市博奥炭黑有限责任公司 | Carbon black granulation desiccator |
| CN115854690A (en) * | 2022-12-29 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Drying equipment for carbon black particle production and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365966A (en) * | 2020-03-24 | 2020-07-03 | 江西黑猫炭黑股份有限公司 | Drying roller centralized discharging device system for carbon black production |
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| CN113739561A (en) * | 2021-07-26 | 2021-12-03 | 乌海黑猫炭黑有限责任公司 | Carbon black desiccator's anti-corrosion device |
| CN115574587A (en) * | 2022-11-11 | 2023-01-06 | 青州市博奥炭黑有限责任公司 | Carbon black granulation desiccator |
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| CN115854690A (en) * | 2022-12-29 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Drying equipment for carbon black particle production and working method thereof |
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