CN104990420A - Small-scale and low-grade exhaust waste heat utilizing bin - Google Patents
Small-scale and low-grade exhaust waste heat utilizing bin Download PDFInfo
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- CN104990420A CN104990420A CN201510400636.XA CN201510400636A CN104990420A CN 104990420 A CN104990420 A CN 104990420A CN 201510400636 A CN201510400636 A CN 201510400636A CN 104990420 A CN104990420 A CN 104990420A
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- feed bin
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- metallic conduit
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Abstract
A small-scale and low-grade exhaust waste heat utilizing bin where materials fall freely is characterized in that heat preservation layers are at least arranged on the outer side and the bottom face of a bin body of the bin; preferably, a heat preservation layer is arranged on the top face, and the bin is provided with a top cover capable of being lifted; at least one opening is formed in the lateral face close to the bottom of the bin; at least one hole is formed in the top of the bin or the lateral face close to the top of the bin; the bin is internally provided with at least one metal pipeline which is from the openings to the holes and allows exhaust to pass through; the space between the inner wall of the bin and the outer walls of the metal pipelines is a material space; the metal pipes penetrate out of the corresponding holes directly; the diameter of each hole is larger than the outer diameter of the corresponding pipeline; heat preservation materials are arranged in gaps of the holes. Traditional technical prejudice is overcome, so that small-scale and low-grade exhaust waste heat is effectively utilized, the energy utilization rate of enterprises can be increased, and energy conservation and environmental protection are facilitated.
Description
Technical field
The present invention relates to low-grade using waste heat from tail gas on a small scale and utilize feed bin, utilized by Industrial Stoves small-scale, low-grade using waste heat from tail gas, enterprise efficiency of energy utilization, belongs to energy-saving field technology.
Prior art
In chemical industry, metallurgy, glass, non-ferrous metal metallurgy and clinker calcination kiln, residual-heat utilization technology comparative maturity, its principle basic simlarity, waste heat that material is with is carried out thermal energy exchange by wind, water or other medium, form steam with the heat energy after exchange again, pushing turbine group generates electricity and/or heats to specific user.Its common feature is waste heat supply temperature higher (namely waste heat grade is higher), and waste heat energy is large, and temperature and heat are all more stable, and exhaust heat utilization effect is good.
But because its bootstrap system equipment is complicated, technological process is long, and is not suitable with low-grade, small-scale UTILIZATION OF VESIDUAL HEAT IN.
Utilize air heat pump system, by the heat absorption of wind carrier, the low grade heat energy in solid material is carried out lifting to utilize, can recycle low grade residual heat, utilizing status is good, but system is more complicated, invests larger.
Application number be 201510037715.9 application for a patent for invention disclose a kind of stirring type asphalt storage bin capable of heating mixed material, it utilizes in the middle of inside and outside storehouse and installs calandria, the air of heating enters Nei Cang, with material Direct Contact Heating material, the waste gas after heating by exhaust outlet on interior Cang Ding directly discharged to outside storehouse.
Application number be 201110290271.1 application for a patent for invention disclose a kind of feeding warehouse for airtight type kiln, it utilizes the spiral in the middle of feed bin and kiln that the flue gas in kiln and feed bin are carried out airtight isolation, flue gas cannot enter feed bin, ensure that the processing atmosphere in kiln is stablized simultaneously; In feed bin, middle part arranges heater and gas atmosphere inlet, by protective gas to heating material.
Application number be 201310188434.4 application for a patent for invention disclose a kind of granulation feed bin and lead to hot-air drying technology method, what it utilized drying drum to discharge enters feed bin containing heat energy gas, directly granulation and heat drying are carried out to material, need entering, discharging bin gas temperature strictly controls, its major function utilizes aerodynamic force to realize granulation function, incidentally utilizes its heat energy to carry out drying.
Application number be 201310336293.6 application for a patent for invention disclose thermal insulation barn on a kind of comprehensive maintaining vehicle for bituminous pavement, it has heat-insulation layer outside warehouse, helical duct layer is provided with in the middle of warehouse and heat-insulation layer, infrared heater and air blast is provided with bottom warehouse, the wind heating that air blast comes by heater, hot blast enters helical duct layer and transfers heat to feed bin warehouse, then the pitch in heating cabinet, realizes the heat insulation function to pitch.
Application number be 201510069451.5 application for a patent for invention disclose a kind of heating blanking bin, it establishes the zone of heating of at least two layers at feed bin storehouse inner bottom part, zone of heating is made up of several heating rod, the heating rod of adjacent zone of heating is in correspondence with each other in cross-like arrangement anyhow, and material reaches thermally equivalent by being separated into uniform several bursts of logistics during zone of heating region; Warehouse discharging opening has additional heat tunnel, continues to heat material.
Though above-mentioned patent application is heated with feed bin certain contacting, all have nothing to do with UTILIZATION OF VESIDUAL HEAT IN.
A kind of prejudice is there is: only have high-grade, on a large scale waste heat just to manage to utilize in prior art.Under the impact of this prejudice, for a long time, never people considers how to make low-grade, small-scale waste heat also be utilized.
Summary of the invention
The object of this invention is to provide a kind of low-grade using waste heat from tail gas on a small scale and utilize feed bin, which overcome traditional technology prejudice, low-grade, small-scale waste heat is also effectively utilized, thus can the energy utilization rate of enterprise, be conducive to energy-conservation and environmental protection.
For this reason, the invention provides a kind of feed bin utilizing low-grade using waste heat from tail gas, material free-falling wherein on a small scale, it is characterized in that, inside be provided with insulation material, at least outside the warehouse of feed bin, heat-insulation layer is set with bottom surface, preferably arrange at end face and also arrange heat-insulation layer, preferred feed bin has the top cover that can start; At least one opening is offered in the side near bin bottom; At least one aperture is provided with at feed bin top or near the side at feed bin top; Be provided with from described opening to the metallic conduit that at least one of described aperture passes through for tail gas in feed bin, space between feed bin inwall and the outer wall of metallic conduit is material space, every root metallic conduit respectively directly passes from an aperture, the diameter in each aperture is greater than the external diameter of pipeline, is provided with insulation material in orifice gap.
Preferably, the top of feed bin and/or bottom can open or close in (preferably by translation or sway); At least have four operating modes, namely bottom closes that top is opened, closedown top, bottom is also closed, bottom opens that top is also opened, bottom is opened top and closed; The top and bottom of feed bin is by control device work compound; As a whole of the top and bottom of feed bin or formed by several incorporating aspects; At least one opening described is arranged on not to be affected the normal discharging of feed bin and not to produce on the position of built on stilts putty; And/or, do not affecting under charging and/or field erected prerequisite, many metallic conduits be even, uneven, arrange with feed bin concentric or be biased in the horizontal direction with feed bin in the horizontal direction.
Preferably, at described opening part, respectively arrange a pipeline coupling flange inside and outside warehouse, inner flange directly welds with Cang Neijinshuguandao, and outward flange directly welds with kiln exhaust pipe, and inside and outside flange diameter is equal and closely accommodate warehouse and heat-insulation layer by bolt; Metallic conduit is uniformly distributed in flange surface.
Preferably, described metallic conduit is straight pipeline, crooked pipeline or helical pipe; Many metallic conduits are vertically evenly arranged (trend of each metallic conduit all the time upwards, is not turned back) in storehouse, the gap uniformity of the horizontal direction between pipeline.
Preferably, the diameter in each aperture is greater than the external diameter 8-15mm of pipeline.
Preferably, each pipeline is connected with pipe end flange through after feed bin.
Preferably, storehouse inner metal tube road bore and radical are the function of warehouse size, inventory, exhaust flow; The flow velocity of tail gas in pipeline is lower than economic velocity.
Preferably, every root metallic conduit is corresponding with the hole of on flange; The side opening hole count at feed bin top or close feed bin top is equal with the quantity of Cang Neijinshuguandao, every root metallic conduit welds with a pipe end flange above warehouse or outside the side at feed bin top, and the pipeline in pipe end flange downstream finally converges to a total pipe flange, and total pipe flange is connected with total pipeline by bolt.
Preferably, the diameter of each metallic conduit in storehouse can be identical or different; Spacing can be constant or change; The cross section of metallic conduit can rounded, oval, rectangle, square or polygon.
Preferably, metallic conduit is provided with the first Pressure gauge in the upstream entering feed bin, is provided with the second Pressure gauge in the downstream leaving feed bin.
According to the present invention, the heat-carrying tail gas of Industrial Stoves is when the metallic conduit by evenly arranging in feed bin, and the heat of tail gas passes to material by pipeline, heats (preheating) material, thus realizes the utilization to kiln using waste heat from tail gas.Metallic conduit is vertically evenly distributed in storehouse, makes thermal field in feed bin even, and does not affect material vertical drop and form built on stilts putty phenomenon.
According to the present invention, Industrial Stoves low-grade (being less than 350 DEG C), on a small scale the waste heat energy can be made full use of, simple transformation can be done to existing feed bin, or exhaust gas channel metallic conduit is set during newly-built feed bin.Its structure is simple, and small investment, is convenient to field fabrication.Material and the tight uniform contact of metallic conduit, be convenient to the direct transmission of heat, makes the temperature difference between conplane material less, improve the efficiency of energy utilization of Industrial Stoves.Industrial Stoves tail gas is outwards discharged by pipeline, does not contact with material, and moisture wherein, pernicious gas composition cannot enter in material, can not have an impact to the composition of material.
According to the present invention, heat-insulation layer is set in the outside of feed bin warehouse, bottom surface.On the position not affecting the normal discharging of feed bin and do not produce built on stilts putty of the side of bottom, (one or several) mouth is opened at feed bin, one piece of pipeline coupling flange is respectively set inside and outside aperture position, the metallic conduit that inner flange is evenly arranged with storehouse Nei Duogen directly welds, outward flange directly welds with kiln exhaust pipe, inside and outside flange diameter equally, and by warehouse and heat-insulation layer with bolts.Feed bin top has several aperture, and every root pipeline respectively directly passes from an aperture, and the diameter in each aperture is greater than the external diameter 8-15mm of pipeline, so that stretching when Pipe installing and rising-heat contracting-cold.Orifice gap insulation material shutoff, to prevent material dust excessive.The metallic conduit of logical tail gas is straight pipeline, is vertically evenly arranged in storehouse, makes gap between pipeline (horizontal direction) even.Pipeline is gathered together by flange through after feed bin, and tail gas outwards discharges from total pipeline.Storehouse inner metal tube road diameter and radical look warehouse size, and material is how many, the difference of tail gas flux and arranging, the flow velocity design of tail gas in pipeline lower than economic velocity, to improve the utilization ratio of using waste heat from tail gas.
According to the present invention, the end, the side of feed bin outside arrange heat-insulation layer, are incubated warehouse.
According to the present invention, offer aperture bottom warehouse, inside and outside aperture, respectively arrange 1 piece of flange, inside and outside flange diameter is equal, and interior outward flange is connected closely by bolt, warehouse, heat-insulation layer.
According to the present invention, bottom warehouse, inner flange welds with 1 or several tail gas metallic conduit, and metallic conduit is uniformly distributed in Flange Plane.Inner flange is according to the metallic conduit radical self-control of design, and every root pipeline is corresponding with the hole of on flange.
According to the present invention, feed bin top drilling number is equal with inner metal tube road, storehouse radical, and aperture is greater than metallic conduit external diameter 8-15mm.Do not affect charging and or in-site installation prerequisite under evenly or adapt to the uneven layout of field condition.
According to the present invention, metallic conduit at outside, warehouse top (top) and flange welding, and progressively converges to a flange, is bolted with the flange of a pipeline.
Accompanying drawing explanation
The using waste heat from tail gas that Figure 1A is made up of one group of three pipeline utilizes the structural representation of feed bin.
Figure 1B be in Figure 1A along A-A to sectional view.
The using waste heat from tail gas that Fig. 2 A is made up of three groups of nine pipelines utilizes the structural representation of feed bin.
Fig. 2 B be in Fig. 2 A along A-A to sectional view.
Detailed description of the invention
As shown in Figure 1-2, according to one embodiment of present invention, provide a kind of feed bin utilizing using waste heat from tail gas, solid material free-falling in feed bin 2, offer at least one opening 4 in the side bottom feed bin 2; The top of feed bin is provided with at least one aperture; Be provided with at least one metallic conduit 3 from described opening to described aperture in feed bin, every root pipeline 3 respectively directly passes from an aperture, and the diameter in each aperture is greater than the external diameter of pipeline, and orifice gap insulation material shutoff, prevents material dust excessive.
Particularly, at least one opening 4 described is arranged on and does not affect the normal discharging of feed bin and do not produce on the position of built on stilts putty.The end, the side of feed bin outside arrange heat-insulation layer, are incubated warehouse.
According to the present invention, offer aperture bottom warehouse, inside and outside aperture, respectively arrange 1 piece of flange, inside and outside flange diameter is equal, and bolt, through inner flange, warehouse, heat-insulation layer, outward flange, makes kiln exhaust pipe 1 warehouse and compact siro spinning technology.
Particularly, at at least one opening 4 place described, respectively arrange one piece of pipeline coupling flange inside and outside aperture position, inner flange directly welds with inner metal tube road, storehouse 3, outward flange directly welds with kiln exhaust pipe 1, and inside and outside flange diameter is equal and be closely connected with warehouse by bolt.
Particularly, described metallic conduit 3 is straight pipeline or crooked pipeline; Many metallic conduits 3 are vertically evenly arranged in storehouse, the gap uniformity of the horizontal direction between pipeline 3; Do not affecting under charging and/or field erected prerequisite, evenly, with feed bin in the horizontal direction concentric, and feed bin be biased in the horizontal direction or uneven layout.Between many metallic conduits 3 and feed bin 2 inwall, there is support.
Particularly, the diameter in each aperture is greater than the external diameter 8-15mm of pipeline, so that the installation of pipeline and rising-heat contracting-cold.Each pipeline 3 is gathered together by flange 7 through after feed bin 2.The heat-carrying tail gas of Industrial Stoves is when the metallic conduit 3 by evenly arranging in feed bin 2, and the heat of tail gas passes to material by pipeline 3, heats (preheating) material, thus realizes the utilization to kiln using waste heat from tail gas.Metallic conduit 3 is vertically evenly distributed in storehouse, makes thermal field in feed bin even, and does not affect material vertical drop and form built on stilts putty phenomenon.Industrial Stoves tail gas is outwards discharged by pipeline 3, does not contact with material, and moisture wherein, pernicious gas composition cannot enter in material, can not have an impact to the composition of material.
Particularly, the bore of Cang Neijinshuguandao and radical are the function of warehouse size, inventory, tail gas flux.The flow velocity of tail gas in pipeline lower than economic velocity, to improve the utilization ratio of solid material waste heat.Space between feed bin inwall and the outer wall of metallic conduit is the passage of material; Metallic conduit is uniformly distributed in Flange Plane.Every root metallic conduit is corresponding with the hole of on flange 5; Feed bin top drilling number is equal with the quantity of Cang Neijinshuguandao, and every root metallic conduit 3 welds with a flange 5 above warehouse, and each flange 5 converges to pipeline 6, and each pipeline 6 converges to flange 7.
Particularly, the diameter of each metallic conduit 3 in storehouse can be identical or different, not occur being caused premised on putty by making somebody a mere figurehead because of during material vertical drop.The cross section of metallic conduit can rounded, rectangle, square, ellipse, polygon.
Particularly, metallic conduit is provided with the first Pressure gauge in the upstream entering feed bin 2, the second Pressure gauge is provided with in the downstream leaving feed bin 2, if two manometric pressure indicating values are different, then check the sealing property of pipeline, guarantee that material does not contact with the gas in pipeline, do not produce airborne dust and form potential safety hazard.
Claims (10)
1. one kind can utilize the feed bin of low-grade using waste heat from tail gas, material free-falling wherein on a small scale, it is characterized in that, be inside provided with insulation material, at least outside the warehouse of feed bin, heat-insulation layer is set with bottom surface, preferably arrange at end face and also arrange heat-insulation layer, preferred feed bin has the top cover that can start; At least one opening is offered in the side near bin bottom; At least one aperture is provided with at feed bin top or near the side at feed bin top; Be provided with from described opening to the metallic conduit that at least one of described aperture passes through for tail gas in feed bin, space between feed bin inwall and the outer wall of metallic conduit is material space, every root metallic conduit respectively directly passes from an aperture, the diameter in each aperture is greater than the external diameter of pipeline, is provided with insulation material in orifice gap.
2. feed bin as claimed in claim 1, is characterized in that, the top of feed bin and/or bottom can open or close in (preferably by translation or sway); At least have four operating modes, namely bottom closes that top is opened, closedown top, bottom is also closed, bottom opens that top is also opened, bottom is opened top and closed; The top and bottom of feed bin is by control device work compound; As a whole of the top and bottom of feed bin or formed by several incorporating aspects; At least one opening described is arranged on not to be affected the normal discharging of feed bin and not to produce on the position of built on stilts putty; And/or, do not affecting under charging and/or field erected prerequisite, many metallic conduits be even, uneven, arrange with feed bin concentric or be biased in the horizontal direction with feed bin in the horizontal direction.
3. feed bin as claimed in claim 1, it is characterized in that, at described opening part, inside and outside warehouse, a pipeline coupling flange is respectively set, inner flange directly welds with Cang Neijinshuguandao, outward flange directly welds with kiln exhaust pipe, and inside and outside flange diameter is equal and closely clamp warehouse and heat-insulation layer by bolt; Metallic conduit is uniformly distributed in flange surface.
4. feed bin as claimed in claim 1, it is characterized in that, described metallic conduit is straight pipeline, crooked pipeline or helical pipe; Many metallic conduits are vertically evenly arranged (trend of each metallic conduit all the time upwards, is not turned back) in storehouse, the gap uniformity of the horizontal direction between pipeline.
5. feed bin as claimed in claim 1, it is characterized in that, the diameter in each aperture is greater than the external diameter 8-15mm of pipeline.
6. feed bin as claimed in claim 1, is characterized in that, each pipeline is connected with pipe end flange through after feed bin.
7. feed bin as claimed in claim 1, it is characterized in that, storehouse inner metal tube road bore and radical are the function of warehouse size, inventory, exhaust flow; The flow velocity of tail gas in pipeline is lower than economic velocity.
8. feed bin as claimed in claim 1, it is characterized in that, every root metallic conduit is corresponding with the hole of on flange; The side opening hole count at feed bin top or close feed bin top is equal with the quantity of Cang Neijinshuguandao, every root metallic conduit welds with a pipe end flange above warehouse or outside the side at feed bin top, and the pipeline in pipe end flange downstream finally converges to a total pipe flange, and total pipe flange is connected with total pipeline by bolt.
9. feed bin as claimed in claim 1, it is characterized in that, the diameter of each metallic conduit in storehouse can be identical or different; Spacing can be constant or change; The cross section of metallic conduit can rounded, oval, rectangle, square or polygon.
10. feed bin as claimed in claim 1, it is characterized in that, metallic conduit is provided with the first Pressure gauge in the upstream entering feed bin, is provided with the second Pressure gauge in the downstream leaving feed bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400636.XA CN104990420A (en) | 2015-07-09 | 2015-07-09 | Small-scale and low-grade exhaust waste heat utilizing bin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400636.XA CN104990420A (en) | 2015-07-09 | 2015-07-09 | Small-scale and low-grade exhaust waste heat utilizing bin |
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| CN104990420A true CN104990420A (en) | 2015-10-21 |
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| CN201510400636.XA Pending CN104990420A (en) | 2015-07-09 | 2015-07-09 | Small-scale and low-grade exhaust waste heat utilizing bin |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4045197A (en) * | 1976-09-08 | 1977-08-30 | Ppg Industries, Inc. | Glassmaking furnace employing heat pipes for preheating glass batch |
| US4375959A (en) * | 1980-10-16 | 1983-03-08 | The Mccarter Corporation | Waste heat recovery in asphalt mixing plant |
| CN201103916Y (en) * | 2007-09-17 | 2008-08-20 | 李晓昆 | Exhaust-heat pre-heating fuel device for biomass gasified power generation |
| CN201694998U (en) * | 2009-12-24 | 2011-01-05 | 卓寿镛 | High-effective energy-saving environmental-protection pre-heating cabin |
| CN103398381A (en) * | 2013-03-31 | 2013-11-20 | 香港优华环保设备有限公司 | Intelligent low-carbon boiler energy-saving emission-reducing system |
| CN103409578A (en) * | 2013-08-10 | 2013-11-27 | 山西鑫立能源科技有限公司 | Preheating bin used for production of direct reduction iron through reduction gas |
-
2015
- 2015-07-09 CN CN201510400636.XA patent/CN104990420A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4045197A (en) * | 1976-09-08 | 1977-08-30 | Ppg Industries, Inc. | Glassmaking furnace employing heat pipes for preheating glass batch |
| US4375959A (en) * | 1980-10-16 | 1983-03-08 | The Mccarter Corporation | Waste heat recovery in asphalt mixing plant |
| CN201103916Y (en) * | 2007-09-17 | 2008-08-20 | 李晓昆 | Exhaust-heat pre-heating fuel device for biomass gasified power generation |
| CN201694998U (en) * | 2009-12-24 | 2011-01-05 | 卓寿镛 | High-effective energy-saving environmental-protection pre-heating cabin |
| CN103398381A (en) * | 2013-03-31 | 2013-11-20 | 香港优华环保设备有限公司 | Intelligent low-carbon boiler energy-saving emission-reducing system |
| CN103409578A (en) * | 2013-08-10 | 2013-11-27 | 山西鑫立能源科技有限公司 | Preheating bin used for production of direct reduction iron through reduction gas |
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Application publication date: 20151021 |