CN104119003A - Heat accumulating type dividing-wall heating industrial furnace - Google Patents
Heat accumulating type dividing-wall heating industrial furnace Download PDFInfo
- Publication number
- CN104119003A CN104119003A CN201410316086.9A CN201410316086A CN104119003A CN 104119003 A CN104119003 A CN 104119003A CN 201410316086 A CN201410316086 A CN 201410316086A CN 104119003 A CN104119003 A CN 104119003A
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- kiln
- carbon dioxide
- heat
- combustion chamber
- thermophore
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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
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The invention relates to a heat accumulating type dividing-wall heating industrial furnace including a lime kiln and a carbon dioxide processing unit; the lime kiln is provided with a feed port, a discharge port, a decomposition gas outlet and a cooling air inlet. The decomposition gas outlet is connected with the carbon dioxide processing unit through a draught fan, and an inlet of a cooling fan is connected with the carbon dioxide processing unit or is communicated with the atmosphere. A calcining zone of the lime kiln is provided with combustion chambers, and the walls of the combustion chambers are formed by constructing heat conduction brick masonry or are made of a metal material. An air port of each combustion chamber is connected with a heat accumulator, and the other end of each heat accumulator is connected with an air blower and a draindown system through a three-way valve. A cooling zone is provided with a lower suction beam, and an outlet of the lower suction beam is connected to the drought fan or a fuel preheater. With additional arrangement of the combustion chambers and the heat accumulators, a material in a kiln body is heated through the heat conduction brick masonry in a flame isolation mode, high-purity carbon dioxide is facilitated to be recycled, combustion-supporting air is preheated by flue gas, the combustion-supporting air temperature is increased, heat energy resources are fully utilized, and the energy consumption of the lime kiln is reduced.
Description
Technical field
The invention belongs to calciner technical field, relate to a kind of industrial vertical kiln, be specifically related to a kind of industrial furnace of heat accumulating type partition heating.
Background technology
Industrial furnace residual heat is recycled, can save energy consumption, reduce thermal technology's products production cost, and reduce the discharge of pollutent simultaneously.Industrial furnace is large-scale highly energy-consuming device, and along with the fast development of national economy, the waste heat of industrial furnace is very abundant, available having a high potential.Iron And Steel Industry, calcium carbide industry, aluminum oxide industry and refractory industry are energy consumption rich anies influential family, and the rapid growth of above-mentioned industry has driven the high speed development of industrial furnace.In process of production, smog discharge temperature is high for thermal technology's product, is about 240～360 DEG C.Effective this part fume afterheat utilization can be reduced to energy dissipation, increase economy and the feature of environmental protection of industrial furnace.The carbonic acid gas that in lime production, decomposition of limestone produces is precious resources, because the carbonic acid gas and the combustion product gases that decompose mix, be unfavorable for recovery and the utilization of carbonic acid gas, therefore need muffle to heat to improve the quality of products and isolate valuable carbonic acid gas.
Granted publication number is open " a kind of energy-saving lime kiln of 102531416B Chinese invention patent, comprise kiln body, kiln body is followed successively by preheating zone from top to down, calcining zone, cooling zone, top, preheating zone is provided with kiln gas vent pipe, cooling zone region is provided with normal temperature air input unit, be fixed on the preheated air input unit on normal temperature air input unit, normal temperature air input unit and preheated air input unit all comprise airduct and are connected to the blast cap of airduct air outlet, the blast cap of preheated air input unit is arranged on the top of normal temperature air input unit blast cap, two blast caps form double-deck false cap structure together, kiln gas vent pipe connects interchanger blast inlet, in interchanger, be provided with heat transfer tube, the cold wind import of heat transfer tube connects gas blower, the hot-blast outlet of heat transfer tube connects the airduct of preheated air input unit, interchanger air outlet connects vacuum fan ".The discharge flue gas that this patent has solved limestone kiln is utilized, waste heat energy, and fuel consumption is large, the problem that combustion air preheating temperature is low, but this patented technology can not solve the recycling problem of carbonic acid gas in lime production.
Summary of the invention
The object of this invention is to provide a kind of industrial furnace of heat accumulating type partition heating, combustion chamber and limestone kiln thorax are separated, utilize smoke pre-heating combustion air, collect highly purified carbonic acid gas simultaneously, reduce the energy expenditure in limestone kiln, improve the overall economic efficiency in limestone kiln.
The industrial furnace of heat accumulating type partition heating of the present invention, comprises limestone kiln and carbon dioxide treatment unit, selects to be provided with fuel preheater.Limestone kiln is provided with opening for feed, discharge port, decomposition gas outlet and cooling air inlet.Decomposition gas outlet is connected with carbon dioxide treatment unit by induced draft fan, and cooling air inlet is connected with cooling blower outlet, and the entrance of cooling blower is connected with carbon dioxide treatment unit or is communicated with atmosphere.In the kiln body in limestone kiln, be provided with preheating zone, calcining zone and cooling zone.Calcining zone is provided with combustion chamber, and the wall of combustion chamber is built by laying bricks or stones and formed or be made up of metallic substance by heat conduction brick structures.The two ends of combustion chamber are provided with air scoop, fuel oil atomizer and slag notch, and air scoop is connected with thermophore, and the other end of thermophore is connected with gas blower and blowdown system by T-valve.Cooling zone is provided with lower suction bar, and the outlet of lower suction bar is connected to induced draft fan or fuel preheater.
Limestone kiln is vertical setting of types kiln or ring kiln.Vertical setting of types kiln is rectangular configuration, and the calcining zone of vertical setting of types kiln is provided with 2～50 combustion chambers, and the both sides of each combustion chamber are provided with thermophore, and the air scoop of both sides, combustion chamber is connected with thermophore respectively.Ring kiln is made up of interior ring and outer shroud, the kiln thorax that the annular space between interior ring and outer shroud is material to be machined.Ring kiln is provided with 2～50 combustion chambers, and combustion chamber annular is uniformly distributed.The both sides of each combustion chamber are provided with thermophore, and the air scoop of both sides, combustion chamber is connected with thermophore respectively.Carbon dioxide treatment unit is provided with purifying carbon dioxide equipment, carbonic acid gas cooling apparatus and carbon dioxide storage tank, and purifying carbon dioxide equipment, carbonic acid gas cooling apparatus are connected successively with carbon dioxide storage tank.Fuel oil atomizer is gas fuel nozzle, liquid fuel nozzle or solid fuel nozzle, or the combination of above-mentioned fuel oil atomizer.Heat storage in thermophore is ceramic refractory or ferrous materials, heat storage be shaped as spherule or cellular polyhedron.While using solid fuel nozzle, heat storage is spherule structure.Metallic substance is cast steel, cast iron or high temperature steel.
The present invention arranges combustion chamber and thermophore with the industrial furnace of heat accumulating type partition heating, add the material in heating kiln body by heat conduction brick structures muffle, adopt the outer hot mode calcined limestone of external combustion, combustion chamber and decomposition of limestone chamber are separated, be conducive to improve the quality of calcination product, reclaim high-pureness carbon dioxide.The smoke pre-heating combustion air that combustion chamber produces, is conducive to improve the temperature of combustion air, makes full use of heat resource, reduces the energy expenditure in limestone kiln, improves the thermo-efficiency of lime production.The present invention not only reduces the energy consumption in limestone kiln, and can obtain this valuable industrial chemicals of high-purity carbon dioxide, improves the overall economic efficiency of industrial furnace.The carbonic acid gas of Wingdale thermolysis reclaims carbonic acid gas by carbon dioxide treatment unit, does the medium circulation utilization of cool lime with carbonic acid gas, is conducive to reduce exhaust gas emission, environment protection.The present invention is for the calcining of multiple thermal technology's products such as Wingdale, rhombspar, blue carbon, rubbish, steel billet.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention with heat accumulating type partition heat industrial stove vertical setting of types kiln;
Fig. 2 is the side-view of Fig. 1;
Fig. 3 is the structural representation of the present invention with heat accumulating type partition heat industrial stove ring kiln;
Fig. 4 is the side-view of Fig. 3.
Wherein:
1-opening for feed, the outlet of 2-decomposition gas, 3-kiln body, 4-combustion chamber, 5-air scoop, 6-thermophore, 7-fuel oil atomizer, 8-lower suction bar, 9-cooling air inlet, 10-discharge port, 11-induced draft fan, 12-carbon dioxide treatment unit, 13-purifying carbon dioxide equipment, 14-carbonic acid gas cooling apparatus, 15-carbon dioxide storage tank, 16-cooling blower, 17-kiln thorax, 18-slag notch, 19-interior ring, 20-annular space, 21-outer shroud, 22-T-valve, 23-valve.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Protection domain of the present invention is not limited to embodiment, makes any change and also belong to the scope of protection of the invention in the scope that those skilled in the art limit in claim.
Embodiment 1
The industrial furnace of heat accumulating type partition heating of the present invention as shown in Figure 1 and Figure 2, comprises vertical setting of types kiln and carbon dioxide treatment unit 12.Vertical setting of types kiln is provided with opening for feed 1, discharge port 10, decomposition gas outlet 2 and cooling air inlet 9.Carbon dioxide treatment unit is provided with purifying carbon dioxide equipment 13, carbonic acid gas cooling apparatus 14 and carbon dioxide storage tank 15, and purifying carbon dioxide equipment, carbonic acid gas cooling apparatus are connected successively with carbon dioxide storage tank.Decomposition gas outlet is connected with carbon dioxide treatment unit by induced draft fan 11, and cooling air inlet is connected with cooling blower 16 outlets, and the entrance of cooling blower is connected with carbon dioxide storage tank.In the kiln thorax 17 in limestone kiln, be provided with preheating zone, calcining zone and cooling zone.Calcining zone is provided with combustion chamber 4, and the wall of combustion chamber is built by laying bricks or stones and formed by heat conduction brick structures.The two ends of combustion chamber are provided with air scoop 5, fuel oil atomizer 7 and slag notch 18, and air scoop is connected with thermophore 6, and the other end of thermophore is connected with gas blower and blowdown system by T-valve 22, and fuel oil atomizer is connected with fuel pump deliver line by valve 23.As shown in Figure 2, vertical setting of types kiln is rectangular configuration, and the calcining zone of vertical setting of types kiln is provided with 10 combustion chambers, and the both sides of each combustion chamber are provided with thermophore, and the air scoop of both sides, combustion chamber is connected with thermophore respectively.Heat storage in thermophore 6 is major diameter steel ball.Cooling zone is provided with lower suction bar 8, and the outlet of lower suction bar is connected to induced draft fan 11.
The present invention is that limestone material, in feeder apparatus, opening for feed 1 enter the kiln thorax 17 of vertical setting of types kiln, is taken calcining zone to through preheating with the vertical setting of types kiln operation scheme of heat accumulating type partition heating.By the combustion chamber 4 heat muffle heating calcined material producing that burns, Wingdale thermolysis is lime and carbonic acid gas, and carbonic acid gas upwards moves after the material of preheating preheating zone through decomposition gas outlet 2 to carbon dioxide treatment unit 12.High temperature lime downwards operation enters cooling zone, and the heat-eliminating medium being bloated by cooling blower 16 enters cooling zone through cooling air inlet 9 and lime carried out cooling, and cooled lime is through discharge port 10 kiln discharges.Coal dust enters combustion chamber 4 through left side fuel oil atomizer 7, and the air that gas blower bloats enters thermophore 6 through left side T-valve 22, and air heat storage in thermophore enters the combustion-supporting burning in combustion chamber through air scoop 5 after emitting heat preheating.The flue gas that burning produces arrives the thermophore 6 on right side through the air scoop on right side, be heat storage accumulation of heat at thermophore, and exothermic flue gas discharges to blowdown system through T-valve 22.The hocket accumulation of heat and emit heat heating combustion air, both sides, combustion chamber alternate combustion of the thermophore 6 of both sides.According to thermophore exit gas temperature, combustion chamber and thermophore alternate run, realize switch operation by the action of T-valve 22 and valve 23, and automatization is carried out.The commutation temperature of thermophore outlet flue gas is 150～200 DEG C, and concrete commutation temperature is determined according to processing requirement.The waste residue that combustion chambers burn produces is discharged through slag notch 18.Because the heating of Wingdale muffle is calcined, decomposition of limestone obtains fat lime and purity carbonic acid gas decomposition gas, and carbonic acid gas enters carbon dioxide treatment unit 12 through decomposition gas outlet 2, induced draft fan 11.Through 13 udst separations of purifying carbon dioxide equipment, after carbonic acid gas cooling apparatus 14, be stored into carbon dioxide storage tank 15 in carbon dioxide treatment unit.A carbonic acid gas part for carbon dioxide storage tank enters cooling zone cool lime through cooling blower, and another part goes out device as carbon dioxide product.High temperature carbon dioxide after cool lime, together enters carbon dioxide treatment unit with the carbonic acid gas of decomposition of limestone and purifies and cooling process to induced draft fan 11 entrances through lower suction bar 8.As selection, the entrance of cooling blower 16 is communicated with atmosphere, makes the cooling lime of cooling air with air, and the high-temperature gas after cool lime is to fuel preheater pre-heating fuel material.In vertical setting of types kiln, 10 combustion chambers are arranged side by side, and each side of combustion chamber is burnt simultaneously or discharges fume, the accumulation of heat simultaneously of each side thermophore or preheated air, and automatization control, accomplishes scale production.
Embodiment 2
Another embodiment of the present invention is ring kiln, as shown in Figure 3, Figure 4, is made up of interior ring 19 and outer shroud 21, and the annular space 20 between interior ring and outer shroud is kiln thoraxes of material to be machined.8 combustion chambers are uniformly distributed, through interior ring, annular space and outer shroud.The both sides of each combustion chamber are provided with thermophore 6, and the air scoop of both sides, combustion chamber is connected with thermophore respectively.The thermophore warm-up combustion-supporting air in combustion chamber outside, the fuel oil atomizer ejection fuel combustion in outside, combustion chamber (outer shroud outside), thermophore 6 accumulation of heats of (interior ring inside) to combustor inner side of the flue gas of generation.Then reversing combustion device indoor fuel outlet ejection fuel combustion, in the thermophore of combustor inner side, heat storage is emitted heat warm-up combustion-supporting air, thermophore 6 accumulation of heats in outside, combustion chamber.
Decomposition of limestone obtains fat lime and purity carbonic acid gas decomposition gas, and carbonic acid gas enters carbon dioxide treatment unit 12 through decomposition gas outlet 2, induced draft fan 11.After 13 udst separations of purifying carbon dioxide equipment, carbonic acid gas cooling apparatus 14, be stored into carbon dioxide storage tank 15 in carbon dioxide treatment unit.A carbonic acid gas part for carbon dioxide storage tank enters cooling zone cool lime through cooling blower, and another part goes out device as carbon dioxide product.
Claims (8)
1. an industrial furnace for heat accumulating type partition heating, comprises limestone kiln and carbon dioxide treatment unit (12), selects to be provided with fuel preheater; Described limestone kiln is provided with opening for feed (1), discharge port (10), decomposition gas outlet (2) and cooling air inlet (9), described decomposition gas outlet is connected with carbon dioxide treatment unit by induced draft fan (11), cooling air inlet is connected with cooling blower (16) outlet, and the entrance of cooling blower is connected with carbon dioxide treatment unit or is communicated with atmosphere; In the kiln body (3) in limestone kiln, be provided with preheating zone, calcining zone and cooling zone, it is characterized in that: described calcining zone is provided with combustion chamber (4), the wall of combustion chamber is built by laying bricks or stones and is formed or be made up of metallic substance by heat conduction brick structures; The two ends of described combustion chamber are provided with air scoop (5), fuel oil atomizer (7) and slag notch (18), and described air scoop is connected with thermophore (6), and the other end of thermophore is connected with gas blower and blowdown system by T-valve (22); Described cooling zone is provided with lower suction bar (8), and the outlet of described lower suction bar is connected to induced draft fan (11) or fuel preheater.
2. the industrial furnace of heat accumulating type partition heating according to claim 1, is characterized in that: described limestone kiln is vertical setting of types kiln or ring kiln.
3. the industrial furnace of heat accumulating type partition heating according to claim 2, it is characterized in that: described vertical setting of types kiln is rectangular configuration, the calcining zone of vertical setting of types kiln is provided with 2～50 combustion chambers, and the both sides of each combustion chamber are provided with thermophore, and the air scoop of both sides, combustion chamber is connected with thermophore respectively.
4. the industrial furnace of heat accumulating type partition heating according to claim 2, is characterized in that: described ring kiln is made up of interior ring (19) and outer shroud (21), the kiln thorax that the annular space (20) between interior ring and outer shroud is material to be machined; Described ring kiln is provided with 2～50 combustion chambers, and combustion chamber annular is uniformly distributed; The both sides of each combustion chamber are provided with thermophore (6), and the air scoop of both sides, combustion chamber is connected with thermophore respectively.
5. the industrial furnace of heat accumulating type partition heating according to claim 1, it is characterized in that: described carbon dioxide treatment unit (12) is provided with purifying carbon dioxide equipment (13), carbonic acid gas cooling apparatus (14) and carbon dioxide storage tank (15), and purifying carbon dioxide equipment, carbonic acid gas cooling apparatus are connected successively with carbon dioxide storage tank.
6. the industrial furnace of heat accumulating type partition heating according to claim 1, is characterized in that: described fuel oil atomizer is gas fuel nozzle, liquid fuel nozzle or solid fuel nozzle, or the combination of above-mentioned fuel oil atomizer.
7. the industrial furnace of heat accumulating type partition heating according to claim 6, is characterized in that: the heat storage in described thermophore (6) is ceramic refractory or ferrous materials; Described heat storage be shaped as spherule or cellular polyhedron; When fuel oil atomizer is solid fuel nozzle, described heat storage is spherule structure.
8. the industrial furnace of heat accumulating type partition heating according to claim 1, is characterized in that: described metallic substance is cast steel, cast iron or high temperature steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410316086.9A CN104119003B (en) | 2014-07-04 | 2014-07-04 | The industrial furnace of heat accumulating type partition heating |
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| CN201410316086.9A CN104119003B (en) | 2014-07-04 | 2014-07-04 | The industrial furnace of heat accumulating type partition heating |
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| CN104119003A true CN104119003A (en) | 2014-10-29 |
| CN104119003B CN104119003B (en) | 2016-02-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496207A (en) * | 2014-12-10 | 2015-04-08 | 石家庄新华能源环保科技股份有限公司 | Heat accumulating type lime rotary kiln |
| CN105776916A (en) * | 2016-03-13 | 2016-07-20 | 石家庄新华能源环保科技股份有限公司 | Low-carbon-emission cement production device |
| CN112456494A (en) * | 2020-12-14 | 2021-03-09 | 湖州强大环保科技有限公司 | Energy-saving and environment-friendly activated carbon regeneration activation method and system |
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| CN204022685U (en) * | 2014-07-04 | 2014-12-17 | 石家庄新华能源环保科技股份有限公司 | The industrial furnace of heat accumulating type partition heating |
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2014
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Patent Citations (5)
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| US8470290B1 (en) * | 2008-02-08 | 2013-06-25 | Boise Packaging & Newsprint, L.L.C. | Methods and apparatus for industrial waste recovery |
| CN101830646A (en) * | 2009-03-12 | 2010-09-15 | 贾会平 | Lime calcining method and star-shaped kiln device |
| CN103058536A (en) * | 2012-11-26 | 2013-04-24 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulation dividing-wall heating rotary kiln device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104496207A (en) * | 2014-12-10 | 2015-04-08 | 石家庄新华能源环保科技股份有限公司 | Heat accumulating type lime rotary kiln |
| CN105776916A (en) * | 2016-03-13 | 2016-07-20 | 石家庄新华能源环保科技股份有限公司 | Low-carbon-emission cement production device |
| CN112456494A (en) * | 2020-12-14 | 2021-03-09 | 湖州强大环保科技有限公司 | Energy-saving and environment-friendly activated carbon regeneration activation method and system |
| CN112456494B (en) * | 2020-12-14 | 2023-03-10 | 湖州强大环保科技有限公司 | Energy-saving and environment-friendly activated carbon regeneration activation method and system |
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| CN104119003B (en) | 2016-02-10 |
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