CN104560079A - Dividing wall type rotary kiln for dry distillation coal powder - Google Patents
Dividing wall type rotary kiln for dry distillation coal powder Download PDFInfo
- Publication number
- CN104560079A CN104560079A CN201410823604.6A CN201410823604A CN104560079A CN 104560079 A CN104560079 A CN 104560079A CN 201410823604 A CN201410823604 A CN 201410823604A CN 104560079 A CN104560079 A CN 104560079A
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- CN
- China
- Prior art keywords
- kiln
- rotary kiln
- dividing wall
- wall type
- type rotary
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/30—Other processes in rotary ovens or retorts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/08—Production of synthetic natural gas
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention relates to a dividing wall type rotary kiln for dry distillation coal powder. The dividing wall type rotary kiln comprises a kiln body, a kiln head cover, a kiln tail cover, a combustion device and a cooling device, wherein the kiln body is in a sleeve structure, and consists of an inner cylinder and an outer cylinder which are coaxially mounted, the center of the inner cylinder is a kiln chamber, and an annular space between the inner cylinder and the outer cylinder is a material channel; the combustion device penetrates through the kiln head cover to be inserted in the kiln chamber, and the annular space is provided with a fire resistant support; 10-15 sets of feeding nozzles are axially arranged on one side of the kiln tail cover of the kiln body, each set comprises 5-25 feeding nozzles, and the feeding nozzles are uniformly distributed along peripheries; inlets of the feeding nozzles are connected with a material storage tank through feeding pipes, outlets of the feeding nozzles are inserted in the annular space, and the feeding nozzles and the kiln body are connected in a sealed manner. Because the dividing wall type rotary kiln of dry distillation coal powder, which is disclosed by the invention, consists of the inner cylinder and the outer cylinder which are coaxially mounted, harmful substances in directly heated fuels can be prevented from being adhered to calcined materials, so that the quality of coke products is improved, and the dividing wall type rotary kiln is favorable to the recycling and the utilization of recovery exhausts of coal powder dry distillation by-products.
Description
Technical field
The invention belongs to industrial furnace technical field, relate to a kind of rotary kiln, be specifically related to the dividing wall type rotary kiln of destructive distillation coal dust.
Background technology
The coal of major part rich coal or high-adhesion, uncomfortable cooperation coking coal.Because it is in coking temperature-rise period, when reaching between 350 ~ 450 DEG C, produce a large amount of colloidalmaterials, viscosity is large, easily makes coal dust material mutually be bonded to bulk, is unfavorable for completing further of coking, or make coal dust be bonded in equipment wall surface, occluding device passage, impact is normally produced.Devise a kind of dividing wall type rotary kiln of destructive distillation coal dust, this equipment is particularly suitable for rich coal or the coking of high-adhesion coal carbonization for this reason.Destructive distillation coal dust material in process of production in rotary kiln, heat up and reached more than 500 DEG C, major part tar has evaporated and has expelled from kiln with tail gas, fresh coal dust is arranged 20 nozzles and is added in kiln from kiln top one, fine coal material is heated fast in the dropping process of space, heat up very soon and reach more than 500 DEG C, shorten the temperature course producing colloidalmaterial, avoid the bonding of material.This equipment can carry out upgrading coking production tar the coal of rich coal or high-adhesion, coke powder is as selling outside fuel or using by oneself, solving domestic and international all coking furnace rich coal or high viscosity coal can not the problem of coking, this rotary kiln also has other adaptability: be suitable for processing pulverulent material, entering stove powder can rapid heating, coking, decomposition etc., can realize the technological process of other processing.
Common rotary kiln fuel sprays into kiln chamber inner combustion from burner, the high-temperature flue gas produced passes from kiln, and heat by the material of destructive distillation, the objectionable impurities in fuel is attached on calcined material, the dust produced that simultaneously burns drops on material, affects the quality of retorted product.The flammable tail gas avoiding the flue gas after burning and coal dust destructive distillation to produce in addition mixes, and is unfavorable for the Collection and utilization of coal dust destructive distillation byproduct reduction tail gas.
Summary of the invention
The object of this invention is to provide a kind of dividing wall type rotary kiln of destructive distillation coal dust, indirect heating is by the material of destructive distillation, avoid objectionable impurities in fuel and dust drops on calcined material, improve the quality of retorted product, retort process flue gas separates with flammable tail gas, is conducive to the Collection and utilization of coal dust destructive distillation byproduct reduction tail gas.
Technical scheme of the present invention is: the dividing wall type rotary kiln of destructive distillation coal dust, comprises kiln body, kiln head cover, kiln hood, burner and water cooler.Kiln body is tube-in-tube structure, is made up of coaxial mounted inner core and urceolus, and the center of inner core is kiln thorax, and the annular space between inner core and urceolus is material channel.Burner inserts kiln thorax through kiln head cover, and annular space is provided with fire-resistant support.The kiln hood side of kiln thorax is provided with exhanst gas outlet, and annular space is provided with gas exit.The kiln hood side of kiln body is provided with 10 ~ 50 groups of feed introduction vertically, and often group is provided with 5 ~ 25 feed introduction, and feed introduction is circumferentially evenly arranged.The entrance of feed introduction is connected with material storage tank by feed-pipe, and annular space is inserted in the outlet of feed introduction, and feed introduction and kiln body are tightly connected.Urceolus is provided with high temperature discharging hole, and the outlet in high temperature discharging hole is divided into two-way, and a road is connected with water cooler, and handling equipment of separately leading up to is connected with burner.Water cooler is provided with cooling air inlet and cooling air outlet, and cooling air outlet is connected to cooling air inlet by recirculation blower.
Rotary kiln is provided with waste heat boiler and desulphurization denitration equipment.Exhanst gas outlet is connected to the entrance of waste heat boiler, and the exhanst gas outlet of waste heat boiler is connected to desulphurization denitration equipment, and the outlet of desulphurization denitration equipment is connected to exhaust emission system.Waste heat boiler is provided with steam coils, and steam coils is connected to the steam turbine of generating set.Rotary kiln is provided with tar recovery system and LNG production equipment, and gas exit is connected with tar recovery system and LNG production equipment successively; The offgas outlet of LNG production equipment is connected to exhaust emission system.Rotary kiln is provided with lump coal feeder, and lump coal feeder is connected to annular space by kiln hood.Rotary kiln is provided with carbon dioxide storage tank, and carbon dioxide storage tank is connected to the entrance of recirculation blower, and connecting pipeline is provided with valve.Rotary kiln is provided with waste heat boiler mouth, and cooling air outlet is connected to the entrance of recirculation blower by waste heat boiler, and recirculation blower outlet is connected to cooling air inlet.The inwall of urceolus and the interior finishing of inner core have refractory masses, and the thickness of described refractory masses is 100 ~ 150mm.Burner is geseous fuel burner, liquid fuel burner or solid fuel burner.
The dividing wall type rotary kiln of destructive distillation coal dust of the present invention is with coking rich coal or highly caking coal for raw material, and coke is produced in destructive distillation, and reclaim by-product tar and high-purity coke-oven gas, coke-oven gas is for the production of LNG, and coke powder is as fuel.The dividing wall type rotary kiln processing coal dust of destructive distillation coal dust of the present invention, also can be used for calciner's kaolin, Wingdale and iron ore.
The dividing wall type rotary kiln of the destructive distillation coal dust that the present invention is made up of coaxial mounted inside and outside cylinder, fuel sprays into kiln chamber inner combustion from burner, the high-temperature flue gas produced passes from kiln, indirect heating is by the material of destructive distillation, the objectionable impurities avoided in direct heating fuel is attached on calcined material, the dust simultaneously avoiding burning to produce drops on material, improves the quality of coke chemicals.The flammable tail gas simultaneously avoiding the flue gas after burning and coal dust destructive distillation to produce mixes, and is conducive to the Collection and utilization of coal dust destructive distillation byproduct reduction tail gas.For the synthesis of LNG or the geseous fuel as high burning-value after tail gas recycle tar after coal dust coking.Burner hearth flue gas is out used for generating through waste heat boiler generation steam, and water cooler cooling coke product heat is reclaimed by waste heat boiler and waste heat is fully used, and is conducive to reducing production cost, increases economic efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of destructive distillation coal dust dividing wall type rotary kiln of the present invention;
Fig. 2 is the A-A figure of Fig. 1;
Fig. 3 is the B-B figure of Fig. 1;
Fig. 4 is another embodiment of the present invention.
Wherein:
1-kiln hood, 2-kiln body, 3-refractory masses, 4-kiln head cover, 5-feed introduction, 6-burner, 7-water cooler, 8-recirculation blower, 9-exhanst gas outlet, 10-kiln thorax, 11-urceolus, 12-annular space, 13-fire-resistant support, 14-inner core, 15-waste heat boiler, 16-exhaust emission system, 17-desulphurization denitration equipment, 18-lump coal feeder, 19-tar recovery system, 20-LNG production equipment, 21-coke powder exports, 22-waste heat boiler, 23-handling equipment, 24-gas exit, 25-high temperature discharging hole, 26-carbon dioxide storage tank, 27-valve.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Scope is not limited to embodiment, and those skilled in the art make any change and also belong to the scope of protection of the invention in the scope that claim limits.
Embodiment 1
The dividing wall type rotary kiln of destructive distillation coal dust of the present invention as shown in Figure 1, comprises kiln body 2, kiln head cover 4, kiln hood 1, burner 6, water cooler 7, waste heat boiler 22, recirculation blower 8, desulphurization denitration equipment 17, lump coal feeder 18, carbon dioxide storage tank 26, tar recovery system 19 and LNG production equipment 20.As shown in Figure 2 and Figure 3, kiln body is tube-in-tube structure, is made up of coaxial mounted inner core 14 and urceolus 11, and the center of inner core is kiln thorax 10, and between inner core and urceolus is annular space 12.The inwall of urceolus and the interior finishing of inner core have refractory masses 3, and the thickness of refractory masses is 100mm.Burner inserts kiln thorax through kiln head cover, and burner is solid fuel burner.Annular space is provided with fire-resistant support 13, and the kiln hood side of kiln thorax is provided with exhanst gas outlet 9, and annular space is provided with gas exit 24.The kiln hood side of kiln body is provided with 20 groups of feed introduction 5 vertically, and often group is provided with 12 feed introduction, and circumferentially nozzle is evenly arranged, and interval angles is 30 °.The entrance of feed introduction is connected with material storage tank by feed-pipe, and annular space is inserted in the outlet of feed introduction, and feed introduction and kiln body are tightly connected.Urceolus is provided with high temperature discharging hole 25, and the outlet in high temperature discharging hole is divided into two-way, and a road is connected with water cooler, and handling equipment 23 of separately leading up to is connected with solid fuel burner.Water cooler is provided with cooling air inlet and cooling air outlet, and cooling air outlet is connected to the entrance of recirculation blower 8 by waste heat boiler, and recirculation blower outlet is connected to cooling air inlet.Carbon dioxide storage tank is connected to the entrance of recirculation blower 8, and connecting pipeline is provided with valve 27.Exhanst gas outlet 9 is connected to the entrance of waste heat boiler, and the exhanst gas outlet of waste heat boiler is connected to desulphurization denitration equipment, and the outlet of desulphurization denitration equipment is connected to exhaust emission system 16.Waste heat boiler 15 is provided with steam coils, and steam coils is connected to the steam turbine of generating set.Gas exit 24 is connected with tar recovery system and LNG production equipment successively, and the offgas outlet of LNG production equipment is connected to exhaust emission system.Rotary kiln is provided with lump coal feeder 18, and lump coal feeder is connected to annular space 12 by kiln hood.
Rotary kiln is provided with tapping channel and effuser, and charging equipment is connected with feed bin, and feed bin is connected with carbon dioxide gas stream transport pipe by blower fan, and transport pipe is connected with feed introduction.Mode of connection: transport pipe is fixed at the top of rotary kiln, be connected with ring-shaped charging nozzle by ring seal slide plate, realize charging when connecting with fixing transport pipe when the nozzle rotated arrives top, rotary kiln often rotates 30 ° of chargings once, ensures that material adds from kiln body top.
The operational process of the dividing wall type rotary kiln of destructive distillation coal dust of the present invention is, rotary kiln fuel sprays in kiln thorax from burner, flame passes from kiln thorax, indirect heating is by the material of destructive distillation, the objectionable impurities avoided in direct heating fuel is attached on calcined material, the dust simultaneously avoiding burning generation drops on material, affects the quality of calcination product.Avoid the flammable tail gas that the flue gas after burning and coal dust destructive distillation produce in addition to mix, be conducive to recovery and the utilization of the flammable tail gas of coal dust destructive distillation byproduct.Can LNG be synthesized after utilizing this tail gas recycle tar, also can as the geseous fuel of high burning-value.In water cooler, coke product is cooled by carbon dioxide recycle, through waste heat boiler heat removal with using it for anything else.The carbon dioxide loss of working cycle is supplemented from carbon dioxide storage tank by opening valve 27.
Embodiment 2
As shown in Figure 4, the flue gas of burning walks annular space 12 to another embodiment of the invention, kiln thorax 10 walked by material, and the outlet of feed introduction inserts kiln thorax through support.Such mode of production Flow of Goods and Materials is smooth and easy, can avoid the problem of material sticky wall between annular space.
Claims (6)
1. the dividing wall type rotary kiln of a destructive distillation coal dust, comprise kiln body (2), kiln head cover (4), kiln hood (1), burner (6) and water cooler (7), described kiln body is tube-in-tube structure, be made up of coaxial mounted inner core (14) and urceolus (11), the center of inner core is kiln thorax (10), and the annular space (12) between inner core and urceolus is material channel; Described burner inserts kiln thorax through kiln head cover, and described annular space is provided with fire-resistant support (13); The kiln hood side of kiln thorax is provided with exhanst gas outlet (9), and annular space is provided with gas exit (24); It is characterized in that: the kiln hood side of described kiln body is provided with 10 ~ 50 groups of feed introduction (5) vertically, and often group is provided with 5 ~ 25 feed introduction, and feed introduction is circumferentially evenly arranged; The entrance of described feed introduction is connected with material storage tank by feed-pipe, and annular space is inserted in the outlet of feed introduction, and feed introduction and kiln body are tightly connected; Described urceolus is provided with high temperature discharging hole (25), and the outlet in described high temperature discharging hole is divided into two-way, and a road is connected with water cooler, and handling equipment (23) of separately leading up to is connected with burner; Described water cooler is provided with cooling air inlet and cooling air outlet, and described cooling air outlet is connected to cooling air inlet by recirculation blower (8).
2., according to the dividing wall type rotary kiln of destructive distillation coal dust described in claim 1, it is characterized in that: described in state rotary kiln and be provided with waste heat boiler (15) and desulphurization denitration equipment (17); Described exhanst gas outlet (9) is connected to the entrance of waste heat boiler, and the exhanst gas outlet of waste heat boiler is connected to desulphurization denitration equipment, and the outlet of desulphurization denitration equipment is connected to exhaust emission system (16).
3. the dividing wall type rotary kiln of destructive distillation coal dust according to claim 2, is characterized in that: described waste heat boiler (15) is provided with steam coils, and described steam coils is connected to the steam turbine of generating set.
4. the dividing wall type rotary kiln of destructive distillation coal dust according to claim 1, is characterized in that: described rotary kiln is provided with tar recovery system (19) and LNG production equipment (20), and described gas exit (24) is connected with tar recovery system and LNG production equipment successively; The offgas outlet of LNG production equipment is connected to exhaust emission system.
5. the dividing wall type rotary kiln of destructive distillation coal dust according to claim 1, it is characterized in that: described rotary kiln is provided with lump coal feeder (18), described lump coal feeder is connected to annular space (12) by kiln hood.
6. the dividing wall type rotary kiln of destructive distillation coal dust according to claim 1, it is characterized in that: described rotary kiln is provided with waste heat boiler (22), described cooling air outlet is connected to the entrance of recirculation blower (8) by waste heat boiler, and recirculation blower outlet is connected to cooling air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823604.6A CN104560079A (en) | 2014-12-26 | 2014-12-26 | Dividing wall type rotary kiln for dry distillation coal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823604.6A CN104560079A (en) | 2014-12-26 | 2014-12-26 | Dividing wall type rotary kiln for dry distillation coal powder |
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| CN104560079A true CN104560079A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410823604.6A Pending CN104560079A (en) | 2014-12-26 | 2014-12-26 | Dividing wall type rotary kiln for dry distillation coal powder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910938A (en) * | 2015-05-15 | 2015-09-16 | 石家庄新华能源环保科技股份有限公司 | Device for recovering water in coal |
| CN105154814A (en) * | 2015-10-12 | 2015-12-16 | 贝利特化学股份有限公司 | Rotary nitriding furnace |
| CN106089339A (en) * | 2016-06-07 | 2016-11-09 | 石家庄新华能源环保科技股份有限公司 | The industrial combined production device with the supercritical carbon dioxide carrying fuel of carbonatite |
| CN107325825A (en) * | 2017-08-04 | 2017-11-07 | 梧州元泓机械设备有限公司 | Continous way interior circulation destructive distillation carbonizing apparatus |
| CN112460944A (en) * | 2020-11-25 | 2021-03-09 | 商都中建金马冶金化工有限公司 | Horizontal rotary kiln |
-
2014
- 2014-12-26 CN CN201410823604.6A patent/CN104560079A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910938A (en) * | 2015-05-15 | 2015-09-16 | 石家庄新华能源环保科技股份有限公司 | Device for recovering water in coal |
| CN104910938B (en) * | 2015-05-15 | 2017-08-01 | 石家庄新华能源环保科技股份有限公司 | The device that a kind of moisture in coal is reclaimed |
| CN105154814A (en) * | 2015-10-12 | 2015-12-16 | 贝利特化学股份有限公司 | Rotary nitriding furnace |
| CN106089339A (en) * | 2016-06-07 | 2016-11-09 | 石家庄新华能源环保科技股份有限公司 | The industrial combined production device with the supercritical carbon dioxide carrying fuel of carbonatite |
| CN106089339B (en) * | 2016-06-07 | 2018-11-13 | 石家庄新华能源环保科技股份有限公司 | The combined production device of carbonatite industry and the supercritical carbon dioxide for carrying fuel |
| CN107325825A (en) * | 2017-08-04 | 2017-11-07 | 梧州元泓机械设备有限公司 | Continous way interior circulation destructive distillation carbonizing apparatus |
| CN112460944A (en) * | 2020-11-25 | 2021-03-09 | 商都中建金马冶金化工有限公司 | Horizontal rotary kiln |
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Application publication date: 20150429 |
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