CN114251669A - Tanning sludge pyrolysis incinerator with chromium oxidation inhibition function and treatment method thereof - Google Patents
Tanning sludge pyrolysis incinerator with chromium oxidation inhibition function and treatment method thereof Download PDFInfo
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- CN114251669A CN114251669A CN202111541155.2A CN202111541155A CN114251669A CN 114251669 A CN114251669 A CN 114251669A CN 202111541155 A CN202111541155 A CN 202111541155A CN 114251669 A CN114251669 A CN 114251669A
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- chamber
- pyrolysis
- incineration
- ash
- tannery sludge
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 137
- 239000010802 sludge Substances 0.000 title claims abstract description 77
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 36
- 239000011651 chromium Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006388 chemical passivation reaction Methods 0.000 title claims description 11
- 230000009467 reduction Effects 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000003818 cinder Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 abstract description 9
- 239000002893 slag Substances 0.000 abstract description 9
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 4
- 238000000638 solvent extraction Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 54
- 238000006722 reduction reaction Methods 0.000 description 37
- 239000007789 gas Substances 0.000 description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Gasification And Melting Of Waste (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of incinerators, in particular to a tannery sludge pyrolysis incinerator with a chromium oxidation inhibiting function and a treatment method thereof, which comprises a furnace body, the furnace body is respectively provided with a feed inlet and a slag discharge port, the furnace body is internally provided with a pyrolysis chamber, an incineration chamber and an ash residue reduction chamber, the feed inlet is communicated with the pyrolysis chamber, a partition mechanism is arranged between the pyrolysis chamber and the incineration chamber, the partition mechanism is used for connecting or hermetically partitioning the pyrolysis chamber and the incineration chamber and realizing that tannery sludge in the pyrolysis chamber enters the incineration chamber or partitions and seals the pyrolysis chamber, when in use, the incinerator is modified into a pyrolysis chamber, an incineration chamber and an ash residue reduction chamber, the pyrolysis chamber dries and pyrolyzes the tannery sludge under the condition of isolating air, thereby generating a large amount of pyrolysis gas and leading the pyrolysis gas into the ash residue reduction chamber, and reducing the hexavalent chromium in the ash residue into trivalent chromium by the pyrolysis gas under the action of pyrolysis atmosphere depending on the temperature of the ash residue.
Description
Technical Field
The invention relates to the technical field of incinerators, in particular to a tannery sludge pyrolysis incinerator with a chromium oxidation inhibiting function and a treatment method thereof.
Background
The tannery sludge is a bulk industrial solid waste generated by the tannery industry and has the characteristics of high organic matter content and high heavy metal chromium content. The common disposal mode of the tannery sludge is incineration or pyrolysis, but if a common incinerator is adopted in the incineration process, due to the reason of excessive air, trivalent chromium in the tannery sludge is greatly oxidized into hexavalent chromium which is better in solubility and has a strong 'three-cause' effect, so that ash slag of the tannery sludge is classified as dangerous waste, the production environment is seriously polluted, the disposal cost of the ash slag is greatly improved, and the economic burden of an enterprise is increased. If the pyrolysis mode is adopted, the biochar generated in the pyrolysis process has limited application in the aspects of soil remediation and the like due to the fact that the biochar contains high-content chromium. Therefore, chromium oxidation of chromium-containing organic solid wastes such as tannery sludge needs to be strictly controlled in the incineration pyrolysis process, but the incineration process is an oxygen-rich condition, and the control of chromium oxidation is extremely difficult. Researches indicate that oxidation reaction of chromium can be inhibited by adding kaolin, phosphate and the like, however, the addition of the strong acid salt and the kaolin during incineration of the tannery sludge influences the heat value of the tannery sludge, so that the heat of the incinerator is insufficient, and normal operation of the whole incinerator is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that trivalent chromium can be oxidized into hexavalent chromium in a large amount in the conventional tannery sludge incinerator, the tannery sludge pyrolysis incinerator with the function of inhibiting chromium oxidation and the treatment method thereof are provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a tannery sludge pyrolysis incinerator with a function of inhibiting chromium oxidation, which comprises a furnace body, wherein a feed inlet and a slag discharge port are respectively arranged on the furnace body, the furnace body is internally provided with a pyrolysis chamber, an incineration chamber and an ash residue reduction chamber, the feeding port is communicated with the pyrolysis chamber, a partition mechanism is arranged between the pyrolysis chamber and the incineration chamber and is used for connecting or hermetically partitioning the pyrolysis chamber and the incineration chamber, and the tannery sludge in the pyrolysis chamber enters the incineration chamber or the pyrolysis chamber is isolated and sealed, the incineration chamber and the ash residue reduction chamber are communicated with each other, the incineration chamber is positioned between the pyrolysis chamber and the ash residue reduction chamber, the slag discharge port is communicated with the ash residue reduction chamber, the device comprises a pyrolysis chamber, an ash residue reduction chamber, a valve, a conveying pipeline and a burning chamber, wherein the pyrolysis chamber and the ash residue reduction chamber are communicated with each other through the first pipeline, the first pipeline is provided with the valve for opening and closing, and the burning chamber is internally provided with the conveying pipeline for conveying a combustible medium.
The invention reforms the incinerator into the pyrolysis chamber, the incineration chamber and the ash residue reduction chamber, the pyrolysis chamber dries and pyrolyzes the tanning sludge under the condition of isolating air, thereby generating a large amount of pyrolysis gas and guiding the pyrolysis gas into the ash residue reduction chamber, hexavalent chromium in the ash residue is reduced into trivalent chromium by the pyrolysis gas under the action of pyrolysis atmosphere depending on the temperature of the ash residue, the pyrolysis gas stays in the ash residue reduction chamber and then enters the incineration chamber upwards, and the hexavalent chromium is discharged after being incinerated together with a combustible medium.
In order to realize cutting off the mechanism, further, cut off the mechanism and include baffle and actuating mechanism, it is provided with the spout to lie in between pyrolysis chamber and the incineration chamber on the furnace body, baffle and spout phase-match, the baffle slides and sets up in the spout, actuating mechanism sets up on the furnace body, actuating mechanism's output sets up on the baffle. The partition board is driven by the driving mechanism to slide in the chute, so that the connection or the separation between the pyrolysis chamber and the incineration chamber is controlled.
In order to prevent the tannery sludge from directly falling to the ash residue reduction chamber, a separation net for preventing the tannery sludge from falling to the ash residue reduction chamber is further arranged in the incineration chamber and is positioned between the conveying pipeline and the separation mechanism. Through set up the barrier net in the incineration chamber, the barrier net will make leather mud and burn in the incineration chamber, prevent that leather mud from directly falling to lime-ash reduction room.
In order to ensure that pyrolysis gas enters the ash residue reduction chamber from the pyrolysis chamber, a first fan is further arranged on the first pipeline. Through set up first fan on first pipeline, pyrolysis gas gets into ash and slag reduction room from the pyrolysis chamber through first pipeline under the guide of first fan.
In order to reduce the damage of the smoke in the incineration chamber to the environment, further, a second pipeline is communicated between the incineration chamber and the ash and slag reduction chamber, and a second fan and a dust removal device are arranged on the second pipeline. Carry the flue gas to dust collector through the second pipeline and remove dust, filter most material, reduce the influence of flue gas to the environment.
In order to prevent harmful gas from going out, a desulfurization device is further arranged on the second pipeline. Through install desulphurization unit on the second pipeline, can get rid of the harmful substance in the flue gas with the flue gas of incineration indoor emission like this through desulphurization unit.
In order to facilitate the tannery sludge to fall into the chamber of the required incinerator, the pyrolysis chamber, the incineration chamber and the ash residue reduction chamber are further arranged from top to bottom in sequence. The pyrolysis chamber, the incineration chamber and the ash residue reduction chamber are sequentially arranged from top to bottom, so that the tannery sludge automatically falls into the required chamber under the action of gravity.
The treatment method of the tannery sludge pyrolysis incinerator with the chromium oxidation inhibiting function comprises the following steps:
s1, drying the tannery sludge to be incinerated, and then directly feeding the tannery sludge into an incineration chamber through a feeding hole, mixing the tannery sludge with a combustible medium conveyed by a conveying pipeline, and incinerating at a high temperature, wherein the temperature range of the incineration chamber is 400-1000 ℃;
s2, drying the tannery sludge to be incinerated in the other batch, and then, feeding the dried tannery sludge into a pyrolysis chamber from a feeding hole for pyrolysis;
s3, guiding the pyrolyzed gas into an ash reduction chamber through a first pipeline and contacting with incineration ash;
and S4, introducing the tannery sludge after pyrolysis in the incineration chamber into the incineration chamber through a partition mechanism.
Further, wherein the temperature of the pyrolysis chamber ranges from 200 ℃ to 400 ℃ and the pyrolysis time ranges from 10min to 20min in step S2, when the pressure in the pyrolysis chamber is higher than 101.325kPa, the pyrolysis gas is conveyed to the ash reduction chamber through the first pipeline.
Further, the residence time of the tannery sludge pyrolyzed in the step S4 in the incineration chamber and the residence time of the incineration ash in the ash reduction chamber are both 10min-20 min.
The invention has the beneficial effects that: the invention relates to a tanning sludge pyrolysis incinerator with a chromium oxidation inhibiting function and a treatment method thereof, wherein the incineration furnace is transformed into a pyrolysis chamber, an incineration chamber and an ash residue reduction chamber, the pyrolysis chamber dries and pyrolyzes the tanning sludge under the condition of air isolation, so that a large amount of pyrolysis gas is generated and is guided into the ash residue reduction chamber, hexavalent chromium in the ash residue is reduced into trivalent chromium by the pyrolysis gas under the action of pyrolysis atmosphere depending on the temperature of the ash residue, the pyrolysis gas stays in the ash residue reduction chamber and then enters the incineration chamber upwards, and is incinerated together with a combustible medium and then discharged, the invention adopts the pyrolysis gas generated by the pyrolysis of the tanning sludge to carry out high-temperature gasification reduction reaction on the hexavalent chromium, has the advantages of low operation cost and high automation degree, has application potential in the aspect of incineration treatment of chromium-containing sludge solid waste such as the tanning sludge, combines the advantages of pyrolysis and incineration technology, and compares with the advantages of the traditional sludge incinerator, the method has the advantages of small occupied area, low energy consumption and detoxification treatment of products, is a high-temperature treatment device specially designed for tannery sludge, printing and dyeing sludge and other heavy metal-containing sludge, has important application prospects in environmental protection and chemical industry, and avoids the problems that the conventional tannery sludge can oxidize trivalent chromium into hexavalent chromium in a large amount in an incinerator, and the pyrolysis mode can generate chromium with higher content or inhibit the oxidation reaction of chromium by adding kaolin, phosphate and other substances, so that the heat of the incinerator is insufficient, and the normal operation of the whole incinerator is influenced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention.
In the figure: 1. furnace body, 101, feed inlet, 102, row's cinder notch, 2, pyrolysis chamber, 3, incineration chamber, 4, lime-ash reduction room, 5, first pipeline, 6, valve, 7, pipeline, 8, baffle, 9, actuating mechanism, 10, separation net, 11, first fan, 12, second pipeline, 13, dust collector, 14, desulphurization unit, 15, second fan.
Detailed Description
The invention is described in more detail below with reference to the following examples:
the present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in figure 1-2, a tannery sludge pyrolysis incinerator that possesses function of inhibiting chromium oxidation, includes furnace body 1, be provided with feed inlet 101 and row cinder notch 102 on the furnace body 1 respectively, pyrolysis chamber 2, incineration chamber 3 and lime-ash reduction chamber 4 have in the furnace body 1, feed inlet 101 communicates with pyrolysis chamber 2, be provided with between pyrolysis chamber 2 and the incineration chamber 3 and cut off the mechanism, cut off the mechanism and be used for being connected or sealed the wall between pyrolysis chamber 2 and the incineration chamber 3 to realize that the tannery sludge in pyrolysis chamber 2 enters into incineration chamber 3 or cuts off pyrolysis chamber 2 and seal, incineration chamber 3 and lime-ash reduction chamber 4 communicate with each other, incineration chamber 3 is located between pyrolysis chamber 2 and lime-ash reduction chamber 4, arrange cinder notch 102 and lime-ash reduction chamber 4 intercommunication, be provided with the first pipeline 5 of mutual intercommunication between pyrolysis chamber 2 and the lime-ash reduction chamber 4, the first pipeline 5 is provided with a valve 6 for opening and closing, and the incineration chamber 3 is internally provided with a conveying pipeline 7 for conveying combustible media. The combustible medium here is natural gas.
The partition mechanism comprises a partition plate 8 and a driving mechanism 9, a sliding groove is formed in the furnace body 1 and located between the pyrolysis chamber 2 and the incineration chamber 3, the partition plate 8 is matched with the sliding groove, the partition plate 8 is arranged in the sliding groove in a sliding mode, the driving mechanism 9 is arranged on the furnace body 1, and the output end of the driving mechanism 9 is arranged on the partition plate 8. The driving mechanism 9 is a servo motor, a gear is arranged at the output end of the servo motor, a rack is arranged on the partition plate 8, the gear is meshed with the rack, a guide shaft is arranged on the partition plate 8, a guide hole matched with the guide shaft is formed in the furnace body 1, and the guide shaft is arranged in the guide hole in a sliding mode.
And a blocking net 10 for preventing tannery sludge from falling to the ash residue reduction chamber 4 is arranged in the incineration chamber 3, and the blocking net 10 is positioned between the conveying pipeline 7 and the blocking mechanism.
The first pipeline 5 is provided with a first fan 11.
A second pipeline 12 is communicated between the incineration chamber 3 and the ash residue reduction chamber 4, and a second fan 15 and a dust removal device 13 are arranged on the second pipeline 12.
A desulfurizer 14 is disposed on the second pipeline 12.
The pyrolysis chamber 2, the incineration chamber 3 and the ash residue reduction chamber 4 are sequentially arranged from top to bottom.
The treatment method of the tannery sludge pyrolysis incinerator with the chromium oxidation inhibiting function comprises the following steps:
s1, drying the tannery sludge to be incinerated, then directly feeding the tannery sludge into the incineration chamber 3 through the feeding hole 101, mixing the tannery sludge with the combustible medium conveyed by the conveying pipeline 7, and incinerating at high temperature, wherein the temperature range of the incineration chamber 3 is 400-1000 ℃;
s2, drying the other batch of tannery sludge to be incinerated, and then, feeding the dried sludge into the pyrolysis chamber 2 through the feeding hole 101 for pyrolysis;
s3, introducing the pyrolyzed gas into the ash reduction chamber 4 through the first pipeline 5 and contacting with the incineration ash;
and S4, introducing the tannery sludge after pyrolysis in the incineration chamber 3 into the incineration chamber 3 through a partition mechanism.
Wherein the temperature range of the pyrolysis chamber 2 in the step S2 is 200 ℃ to 400 ℃, the pyrolysis time is 10min to 20min, and when the pressure in the pyrolysis chamber 2 is higher than 101.325kPa, the pyrolysis gas is conveyed to the ash reduction chamber 4 through the first pipeline 5.
Wherein the residence time of the tannery sludge pyrolyzed in the step S4 in the incineration chamber 3 and the residence time of the incineration ash in the ash reduction chamber 4 are both 10min-20 min.
When the tannery sludge pyrolysis incinerator with the chromium oxidation inhibiting function and the treatment method thereof are used, the startup stage of the tannery sludge pyrolysis incinerator is as follows: tannery mud after the drying passes through feed inlet 101 and gets into pyrolysis chamber 2, because incineration chamber 3 has not ignited and starts, so pyrolysis chamber 2 can not normally go on, consequently, tannery mud is through opening 8 direct entering incineration chamber 3 of baffle between pyrolysis chamber 2 and the incineration chamber 3 in the pyrolysis chamber 2, burn through the mode that supplyes natural gas ignition in incineration chamber 3, the second batch tannery mud gets into pyrolysis chamber 2 simultaneously, separate and seal pyrolysis chamber 2 and incineration chamber 3 through baffle 8, under the heat and the temperature that incineration chamber 3 provided, tannery mud begins the pyrolysis in pyrolysis chamber 2, the first batch tannery mud incineration process part lime-ash falls into the ash chamber and stores in the incineration chamber in 3, the pyrolysis incinerator starts successfully.
The operation stage of the tannery sludge pyrolysis incinerator is as follows: the pyrolysis chamber 2 is controlled to be below 400 ℃ at the highest temperature under the condition of the temperature and heat provided by the incineration section, leather making sludge is further dehydrated and decomposed at the temperature, substances such as alkane and olefin are released in the pyrolysis process, the air pressure in the pyrolysis chamber 2 is increased along with the increase of released pyrolysis gas, an air pressure switch is triggered, a fan is started, the pyrolysis gas in the pyrolysis chamber 2 is pumped to the ash chamber, runs from bottom to top from the bottom of the ash chamber, is in countercurrent contact with incineration ash in the ash chamber, and stays for more than 10-20 min;
after pyrolysis of the pyrolysis chamber 2 is finished, a sealing opening between the pyrolysis chamber 2 and the incineration chamber 3 is opened, the pyrolyzed tannery sludge enters the incineration chamber 3 to start incineration, meanwhile, the control partition plate 8 seals the pyrolysis chamber 2, next batch of tannery sludge is put into the pyrolysis chamber for pyrolysis, the tannery sludge in the incineration chamber 3 is blocked by two layers of barrier nets 10, natural gas is introduced as auxiliary fuel for full combustion, the barrier nets 10 are vibrated by a mechanical shaking device in the combustion process to ensure full oxygenation and complete combustion, the tannery sludge which is completely combusted falls into the bottom of the incineration chamber 3 through a screen mesh, and enters an ash chamber through the barrier nets between the incineration chamber 3 and the ash chamber;
the flue gas generated in the burning process of the burning chamber 3 contains more particulate matters, oxysulfide, nitric oxide and the like, after the flue gas is led out through a second pipeline 12 at the upper part of the burning chamber 3, the flue gas firstly collects the particulate matters through a bag-type dust collector, and then the sulfur oxide and the nitric oxide are removed through a desulfurizing tower and a denitration device, the particulate matters and dust collected through a bag can be manually guided into a slag chamber, and the particulate matters and the dust are subjected to pyrolysis gas gasification reduction together with burning ash slag to complete the harmless treatment of fly ash.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a tannery sludge pyrolysis incinerator that possesses suppression chromium oxidation function, includes furnace body (1), be provided with feed inlet (101) and row's cinder notch (102) on furnace body (1) respectively, its characterized in that: have pyrolysis chamber (2), incineration chamber (3) and lime-ash reduction chamber (4) in furnace body (1), feed inlet (101) and pyrolysis chamber (2) intercommunication, be provided with between pyrolysis chamber (2) and the incineration chamber (3) and cut off the mechanism, cut off the mechanism and be used for connecting or sealed the wall between pyrolysis chamber (2) and incineration chamber (3) to it enters incineration chamber (3) or cuts off pyrolysis chamber (2) to realize tannery mud in pyrolysis chamber (2) and seals, incineration chamber (3) and lime-ash reduction chamber (4) communicate each other, incineration chamber (3) are located between pyrolysis chamber (2) and lime-ash reduction chamber (4), arrange cinder notch (102) and lime-ash reduction chamber (4) intercommunication, be provided with first pipeline (5) that communicate each other between pyrolysis chamber (2) and lime-ash reduction chamber (4), be provided with valve (6) that are used for opening and closing on first pipeline (5), and a conveying pipeline (7) for conveying a combustible medium is arranged in the incineration chamber (3).
2. The tannery sludge pyrolysis incinerator with chromium oxidation inhibition function according to claim 1, characterized in that: the partition mechanism comprises a partition plate (8) and a driving mechanism (9), a sliding groove is formed in the furnace body (1) and located between the pyrolysis chamber (2) and the incineration chamber (3), the partition plate (8) is matched with the sliding groove, the partition plate (8) is arranged in the sliding groove in a sliding mode, the driving mechanism (9) is arranged on the furnace body (1), and the output end of the driving mechanism (9) is arranged on the partition plate (8).
3. The tannery sludge pyrolysis incinerator with chromium oxidation inhibition function according to claim 1, characterized in that: and a blocking net (10) for preventing tannery sludge from falling to the ash residue reduction chamber (4) is arranged in the incineration chamber (3), and the blocking net (10) is positioned between the conveying pipeline (7) and the blocking mechanism.
4. The tannery sludge pyrolysis incinerator with chromium oxidation inhibition function according to claim 1, characterized in that: the first pipeline (5) is provided with a first fan (11).
5. The tannery sludge pyrolysis incinerator with chromium oxidation inhibition function according to claim 1, characterized in that: a second pipeline (12) is communicated between the incineration chamber (3) and the ash residue reduction chamber (4), and a second fan (15) and a dust removal device (13) are arranged on the second pipeline (12).
6. The tannery sludge pyrolysis incinerator with a chromium oxidation inhibition function according to claim 5, characterized in that: and a desulfurization device (14) is arranged on the second pipeline (12).
7. The tannery sludge pyrolysis incinerator with chromium oxidation inhibition function according to claim 1, characterized in that: the pyrolysis chamber (2), the incineration chamber (3) and the ash residue reduction chamber (4) are sequentially arranged from top to bottom.
8. A method for treating a tannery sludge pyrolysis incinerator with chromium oxidation inhibition function according to any one of claims 1 to 7, comprising the steps of:
s1, drying the tannery sludge to be incinerated, directly feeding the tannery sludge into the incineration chamber (3) through the feeding hole (101), mixing the tannery sludge with the combustible medium conveyed by the conveying pipeline (7), and incinerating at high temperature, wherein the temperature range of the incineration chamber (3) is 400-1000 ℃;
s2, drying the tannery sludge to be incinerated in the other batch, and then, feeding the dried tannery sludge into the pyrolysis chamber (2) through the feeding hole (101) for pyrolysis;
s3, introducing the pyrolyzed gas into the ash reduction chamber (4) through a first pipeline (5) and contacting with incineration ash;
and S4, introducing the tannery sludge after pyrolysis in the incineration chamber (3) into the incineration chamber (3) through a partition mechanism.
9. The method for treating a tannery sludge pyrolysis incinerator having a chromium oxidation inhibition function according to claim 8, wherein: wherein the temperature range of the pyrolysis chamber (2) in the step S2 is 200-400 ℃, the pyrolysis time is 10-20 min, and when the air pressure in the pyrolysis chamber (2) is higher than 101.325kPa, pyrolysis gas is conveyed to the ash reduction chamber (4) through the first pipeline (5).
10. The method for treating a tannery sludge pyrolysis incinerator having a chromium oxidation inhibition function according to claim 8 or 9, wherein: wherein the residence time of the tannery sludge pyrolyzed in the step S4 in the incineration chamber (3) and the residence time of the incineration ash in the ash reduction chamber (4) are both 10min-20 min.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642139A (en) * | 2017-02-20 | 2017-05-10 | 长沙超梵环境科技有限公司 | Domestic refuse pyrolysis and gasification and fly ash direct melting device and use method thereof |
| CN106824979A (en) * | 2017-01-04 | 2017-06-13 | 长沙汇聚环境技术有限公司 | A kind of cooperative disposal method of Cr VI slag and biomass castoff |
| CN207849376U (en) * | 2018-01-08 | 2018-09-11 | 修武永乐新能源环保设备有限公司 | A kind of paint can and paint Slag treatment device |
| CN110848701A (en) * | 2019-11-14 | 2020-02-28 | 陕西润和环保科技有限公司 | Internal heating type garbage gasification incinerator device |
| CN112728557A (en) * | 2021-01-12 | 2021-04-30 | 河南科技大学 | Medical waste pyrolysis incinerator |
-
2021
- 2021-12-16 CN CN202111541155.2A patent/CN114251669B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824979A (en) * | 2017-01-04 | 2017-06-13 | 长沙汇聚环境技术有限公司 | A kind of cooperative disposal method of Cr VI slag and biomass castoff |
| CN106642139A (en) * | 2017-02-20 | 2017-05-10 | 长沙超梵环境科技有限公司 | Domestic refuse pyrolysis and gasification and fly ash direct melting device and use method thereof |
| CN207849376U (en) * | 2018-01-08 | 2018-09-11 | 修武永乐新能源环保设备有限公司 | A kind of paint can and paint Slag treatment device |
| CN110848701A (en) * | 2019-11-14 | 2020-02-28 | 陕西润和环保科技有限公司 | Internal heating type garbage gasification incinerator device |
| CN112728557A (en) * | 2021-01-12 | 2021-04-30 | 河南科技大学 | Medical waste pyrolysis incinerator |
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