CN204417406U - A kind of dividing wall type rotary kiln of destructive distillation coal dust - Google Patents
A kind of dividing wall type rotary kiln of destructive distillation coal dust Download PDFInfo
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- CN204417406U CN204417406U CN201420839947.7U CN201420839947U CN204417406U CN 204417406 U CN204417406 U CN 204417406U CN 201420839947 U CN201420839947 U CN 201420839947U CN 204417406 U CN204417406 U CN 204417406U
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Abstract
The utility model relates to a kind of 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 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.The dividing wall type rotary kiln of the destructive distillation coal dust that the utility model is made up of coaxial mounted inside and outside cylinder, the objectionable impurities in direct heating fuel is avoided to be attached on calcined material, improve the quality of coke chemicals, be conducive to the Collection and utilization of coal dust destructive distillation byproduct reduction tail gas.
Description
Technical field
The utility model belongs to industrial furnace technical field, relates to a kind of rotary kiln, is 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.
Utility model content
The purpose of this utility model 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.
The technical solution of the utility model 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 the utility model destructive distillation coal dust 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 the utility model destructive distillation coal dust, 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 utility model 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 the utility model destructive distillation coal dust dividing wall type rotary kiln;
Fig. 2 is the A-A figure of Fig. 1;
Fig. 3 is the B-B figure of Fig. 1;
Fig. 4 is the utility model another embodiment.
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 utility model is described in detail.The utility model protection domain is not limited to embodiment, and those skilled in the art make the scope that any change also belongs to the utility model protection in the scope that claim limits.
Embodiment 1
The dividing wall type rotary kiln of the utility model destructive distillation coal dust 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 the utility model destructive distillation coal dust 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 kind of embodiment of the present utility model, 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420839947.7U CN204417406U (en) | 2014-12-26 | 2014-12-26 | A kind of dividing wall type rotary kiln of destructive distillation coal dust |
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| CN201420839947.7U CN204417406U (en) | 2014-12-26 | 2014-12-26 | A kind of dividing wall type rotary kiln of destructive distillation coal dust |
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| CN204417406U true CN204417406U (en) | 2015-06-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236772A (en) * | 2015-10-23 | 2016-01-13 | 石家庄新华能源环保科技股份有限公司 | Shaft kiln-partition rotary kiln combination unit |
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2014
- 2014-12-26 CN CN201420839947.7U patent/CN204417406U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236772A (en) * | 2015-10-23 | 2016-01-13 | 石家庄新华能源环保科技股份有限公司 | Shaft kiln-partition rotary kiln combination unit |
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