CN2322969Y - Direct combustion fast asphalt heating device - Google Patents
Direct combustion fast asphalt heating device Download PDFInfo
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- CN2322969Y CN2322969Y CN 97236527 CN97236527U CN2322969Y CN 2322969 Y CN2322969 Y CN 2322969Y CN 97236527 CN97236527 CN 97236527 CN 97236527 U CN97236527 U CN 97236527U CN 2322969 Y CN2322969 Y CN 2322969Y
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Abstract
The utility model relates to a direct-combustion asphalt fast-heating device, which comprises a radiating pipe, an irradiating chamber of an end cover, an asphalt high-temperature heating section, a connecting section of an irradiating-heating component, an asphalt preheating section, a gas channel, etc. The utility model uses direct combustion to heat the materials with strong viscidity and poor fluidity under normal temperature, such as the asphalt, the petroleum, etc. Heat-transferring oil is served as a middle heat carrier to continuously absorb and release heat through internal circulation, and therefore, the high-temperature asphalt with better fluidity can be obtained rapidly and continuously. The utility model can simultaneously finish the storage, the dehydration and the heating of materials, and the asphalt storage tank can be heated through the outer circulation of the heat-transferring oil and the high-temperature asphalt.
Description
The utility model relates to a kind of device that the material of viscosity high workability difference under the normal temperature is heated.
The existing asphalt heater that adds in the high viscosity material devices such as heated bitumen, crude oil, be that a kind of inside is provided with heat exchanging pipe and self does not possess the basin of thermal source, it utilizes boiler or process furnace as thermal source usually, steam or thermal oil by boiler or process furnace output transferring heat energy, flow to by the road and boiler or the isolating heating basin of process furnace, enter the heat transfer tube in the heating basin, flow out the heating basin by tube wall and after being stored in the pitch exchange energy that heats in the basin inner chamber, flow back to boiler or process furnace.This type of heating is a kind of indirect type of heating, its facility investment height, and system thermal efficiency is low, and troublesome poeration, rate of heating are slow, and the plant area area is big, and specialized production degree is low.
The purpose of this utility model is, provides a kind of compact construction, floor space is little, cost is lower, easy to operate, direct-fired pitch fast heating device that thermo-efficiency is higher.
The technical scheme that realizes the utility model purpose is (referring to Fig. 1), this device has radiating pipe (4), its constructional feature is, this device also has end cap (2), radiation chamber (3), asphalt high-temperature heating zone (5), radiation be heated assembly (6), connected section (7), pitch preheating section (8), exhaust gases passes (9) and fume emission collection case (10); The be heated whole inner cavity of assembly (6) of radiation forms radiation chamber (3); The housing (51) of asphalt high-temperature heating zone (5) is to have the housing that basic configuration is an annulated column shape inner chamber, and radiating pipe (4) is located in the housing (51); Asphalt high-temperature heating zone (5) is provided with around the radiation assembly (6) that is heated, and the radiation assembly (6) that is heated is located in the space that the circumferential interior plate (51-1) of housing (51) centered on; Exhaust gases passes (9) is located in the housing (81) of pitch preheating section (8); The asphalt high-temperature section of heating (5) links with connected section (7), the other end of connected section (7) and pitch preheating section (8) link, pitch preheating section (8) links with fume emission collection case (10), and the inner chamber of the inner chamber of radiation chamber (3), connected section (7), exhaust gases passes (9) and fume emission collection case (10) connects successively, and end cap (2) is located at the other end of radiation chamber (3); The be heated media outlet a of assembly (6) of radiation
2And the medium import b of radiating pipe (4)
1Be to pass through the mutual anastomosing port of pipeline, the media outlet b of radiating pipe (4)
2With the be heated medium import a of assembly (6) of radiation
1Be to pass through the mutual anastomosing port of pipeline, the sender property outlet c of housing (81)
2And the working medium import d of housing (51)
1Be to pass through the mutual anastomosing port of pipeline.
The above-mentioned radiation assembly (6) that is heated is a coil pipe, and coil pipe (6) whole inner cavity is that basic configuration is columniform cavity, and the contact between each dish of coil pipe (6) be closely contact, thereby at the internal surface formation radiation heating surface (61) of whole coil pipe; Housing (51) is that basic configuration is the housing with annulus cylindrical inner chamber; Between coil pipe (6) and circumferential interior plate (51-1), be provided with upholder (59-1); Radiating pipe (4) is tortuous shape radiating pipe, be provided with a determining deviation between each dish of tortuous shape radiating pipe (4), and the medullary ray of each dish is substantially disposed on the same cylindrical surface; Between tortuous shape radiating pipe (4) and circumferential outer panel (51-2), be provided with upholder (59-2); The port of end cap (2) is the port that the port of burner (1) can be set or connect the hot gas transport pipe.
Above-mentioned pitch preheating section (8) has housing (81), fronttube plate (82), back tube plate (83) and traverse baffle (84), fume pipe logical (9) is the many fume pipes that are arranged in parallel, each fume pipe (9) is located between fronttube plate (82) and the back tube plate (83), and with fronttube plate (82) and airtight the fixedlying connected of back tube plate (83); Housing (81) and fronttube plate (82) and airtight the fixedlying connected of back tube plate (83); The traverse baffle that polylith is arranged in parallel (84) is fixed in the inner chamber of housing (81).
Above-mentioned connected section (7) has housing (71), refractory liner (72) and firebreak (73), refractory liner (72) is fixed on the inwall of housing (71), firebreak (73) is fixed on the front end face of fronttube plate (82), and the space between refractory liner (72) and the firebreak (73) is the cavity of connected section (7); One end of housing (71) is fixedlyed connected with housing (51), and the other end is fixedlyed connected with housing (81).
Also be fixed with the exhaust header (85) that communicates with housing (81) inner chamber on the housing (81) of above-mentioned pitch preheating section (8); Be fixed with the venting (55) that communicates with housing (51) inner chamber on the housing (51) of asphalt high-temperature heating zone (5).
Above-mentioned radiation be heated in the part body of assembly (6) and the body of radiating pipe (4) in be provided with thermal oil, be provided with in the inner chamber of housing (51) and housing (81) under the normal temperature that viscosity higherly is difficult for flowing, heating back flowing property working medium preferably, the be heated media outlet a of assembly (6) of radiation
2It also is the port that can be connected with the outer circulation heating plant.
Connect relevant pipe connecting, valve, recycle pump and the groove jar of pipeline at the relevant medium of this device and working medium port, the heating pipe that burner or setting communicate with thermal source is set and disposes corresponding electric control gear and can use in end caps.
The utlity model has positive effect.(1) this device centers on the radiation chamber setting with the asphalt high-temperature heating zone, in use, it with the thermal oil medium and as middle thermophore, provide transmitting power by hot oil pump, the thermal oil heat on the radiation heating surface of the radiation wallboard by assembly or tube wall absorbing radiation chamber when being heated assembly of flowing through flow to the tube wall of radiating pipe by radiating pipe with the pitch in the heat transferred heat piece housing through internal recycle.This utilization directly burns, with thermal oil as high-temperature flue gas with carry out heat passage medium between the pitch, in device the mode of internal recycle heat-shift, improved thermo-efficiency greatly, rate of heating is obviously accelerated.Simultaneously, at the be heated media outlet place of assembly of the radiation of this device the output interface that leads to outside the device can be set.So also can satisfy the needs that carry out the outer circulation heat supply.(2) the circumferential inner face of the housing of heat section both can be used as the bracing member of radiation chamber, simultaneously thereby the be heated quantity of radiant energy of assembly of accessible radiation chamber and radiation makes the pitch in the heat piece housing obtain more heat again, and the thermo-efficiency of this device is further improved.(3) the intravital exhaust gases passes of pitch preheating section shell that is positioned at of this device communicates with radiation chamber by the connected section inner chamber, exhaust gases passes can make the pitch in the preheating section housing obtain preheating, has further fully utilized energy from radiation chamber, the thermo-efficiency of this device is further improved.(4) this device is with several heat-processed reasonable combination, and not only the heat exchange efficiency of thermal oil high (near 100%) is provided with thermal insulation layer, is provided with under the situation of firebreak in device at this crust of the device simultaneously, and the utilization ratio of the heat that burning is generated is also higher.Greatly improved the bituminous heat exchange efficiency, the coking of avoiding pitch may cause again with the direct heat exchange of high-temperature flue gas, thus realized the possibility of " direct combustion heating ".Indirect heating with respect to traditional employing boiler, process furnace is a kind of technical breakthrough, specialized production degree of bituminous and production efficiency have been improved, reduce the PRODUCTION OF PITCH cost, reduced occupation area of equipment and investment cost, improved the operation production environment.(5) preheating section that is provided with of this device, its cubic elasticity is bigger, can be from tens tons to tens ton, thus created condition for the product seriation Application and Development.This installs employed thermal oil is to be liquid heat-transfer medium that does not gasify when being heated to 350 ℃ or the heat-transfer medium with similarity under operating ambient temperature.(6) this device has been created a kind of new device for the heating of viscosity height, mobile difference material under the normal temperature, is fit to bituminous concrete batching plant, pitch accumulating storehouse, moves that construction pitch is heated, occasions such as petroleum transport pumping plant and oil tanker use.The also configurable robot control system(RCS) of this device becomes electromechanical integrated device.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is an another kind of structural representation of the present utility model.
Fig. 3 is for removing the A-A of end cap and burner to synoptic diagram among Fig. 1 and Fig. 2.
Fig. 4 is the B-B cross-sectional schematic of Fig. 1 and Fig. 2.
Fig. 5 is the C-C cross-sectional schematic of Fig. 1.
Fig. 6 is the D-D cross-sectional schematic of Fig. 2.
A kind of synoptic diagram when Fig. 7 uses for the utility model.
Below in conjunction with drawings and Examples the utility model is further described.
Be subjected to hot coil as Fig. 1 and shape shown in Figure 4 as the be heated radiation of assembly (6) of radiation with tortuous the making of No. 20 steel pipes, radiation is fixed for tight contact and by solder joint by the contact between each dish of hot coil (6), thereby forms radiation heating surface (61) at the internal surface of whole coil pipe.The space that radiation heating surface (61) is centered on is radiation chamber (3), and the basic configuration of radiation chamber (3) is cylindrical.
Make housing (51) with the Q235A steel through punching press, coiling, welding as the asphalt high-temperature heating zone (5) of Fig. 1, Fig. 3 and shape shown in Figure 4.Housing (51) is to have the housing that basic configuration is the annulus cylindrical inner chamber.With No. 20 tortuous Fig. 1 of radiating pipe (4) and the tortuous shape radiating pipes of shape shown in Figure 4 of being made as of steel pipe, be provided with a determining deviation between each dish of tortuous shape radiating pipe (4), the medullary ray of each dish of tortuous shape radiating pipe (4) is substantially disposed on the same cylindrical surface.Tortuous shape radiating pipe (4) is arranged in the housing (51), and links to each other with the inner face of the circumferential outer panel (51-2) of housing (51) by steel upholder (59-2).The airtight working medium import d that communicates with housing (51) inner chamber that is fixed with in the outer face of the circumferential outer panel (51-2) of housing (51)
1, sender property outlet d
2And venting (55), the also airtight medium import b that communicates with tortuous shape radiating pipe (4) that is fixed with
1With media outlet b
2Also be welded with underframe (56) on the outer face of the circumferential outer panel (51-2) of housing (51) and thermal insulation layer (58) is set.
Radiation heat pipe (6) is placed the formed central cavity of circumferential interior plate (51-1) of housing (51), and make with steel upholder (59-1) that radiation heat pipe (6) is stable to be provided with.
End cap (2) has end cap outer ring body (21) and end cap inner ring body (22).End cap outer ring body (21) is made of outer shroud housing (21-1) and the refractory liner (21-2) that is fixed on the outer shroud housing (21-1), and the refractory liner (22-2) on the toroidal shell body (22-1) constitutes end cap inner ring body (22) by interior toroidal shell body (22-1) and in being fixed on.End cap outer shroud housing (21-1) is fixedlyed connected with housing (51) by the joint (23) that is fixed on housing (51) front end-plate (51-3), end cap inner ring body (22) is arranged in the middle cavity of end cap outer ring body (21), by fastening piece outer shroud housing (21-1) is fixedlyed connected with interior toroidal shell body (22-1), and the burner noz(zle) (11) that makes burner (1) in burner (1) is fixed on the toroidal shell body (22-1) is arranged in the middle cavity of end cap inner ring body (22), aims at radiation chamber (3).Radiation is passed by the media outlet pipeline section (65) of hot coil (6) to stretch out outside the end cap (2) from end cap outer ring body (21).Be provided with asbestos linings (24) between ring flange (23) and the end cap outer ring body (21), between end cap outer ring body (21) and the end cap inner ring body (22) and between end cap inner ring body (22) and the burner nozzle (11), between the media outlet pipeline section (65) of radiation heat pipe (6) and end cap body skin (21), be provided with asbestos and serve as a contrast.
Make housing (81) with the punching press of Q235A steel plate, coiling and welding as the pitch preheating section (8) of Fig. 1 and shape shown in Figure 5.Housing (81) is to have the housing that basic configuration is a cylindrical cavity.The front end of housing (81) and the airtight welding of fronttube plate (82), the rear end of housing (81) and the airtight welding of back tube plate (83), the plate body of fronttube plate (82) and back tube plate (83) is provided with corresponding a plurality of through hole.Make many linear pattern fume pipes (9) with No. 20 steel pipes, the airtight respectively corresponding through hole of front and back tube sheets (82,83) that is welded on, the two ends of every fume pipe (9) forms the tubulation that is arranged mutually parallel.Polylith traverse baffle (84) parallel to each other is fixed in the housing (81) by the set-up mode at common tubular heat exchanger.Airtight exhaust header (85), the working medium import c that communicates with housing (81) inner chamber that be welded with in the outer face of housing (81)
1With sender property outlet c
2Also be welded with underframe (86) on the outer face of housing (81) and thermal insulation layer (88) is set.
Make the housing (10-1) of fume emission collection case (10) with the Q235A steel plate, and constitute fume emission collection case (10) by housing (10-1) and the refractory liner (10-2) that is fixed on the housing (10-1), with fastening piece housing (10-1) is fixedlyed connected with back tube plate (83).
Make the housing (71) of connected section (7) with the Q235A steel plate, two sections constituted by fastening piece is fixedly connected before and after housing (71) was divided into.By housing (71) and be fixed on the main body that refractory liner (72) on the housing (71) constitutes connected section (7), on the front end face of fronttube plate (82), be fixed with the refractory liner material and constitute firebreak (73).The front end of housing (71) is fixedlyed connected with housing (51), fixedly connected with housing (81) in the rear end of housing (71), the medium inlet section (64) of heat loss through radiation pipe (6) is passed and stretched out outside the housing (71) from the refractory liner (72) of connected section (7) and housing (71).
See Fig. 7, before present embodiment gained device uses, radiation is subjected to the media outlet a of hot coil (6)
2Medium import b by pipe connecting and tortuous shape radiating pipe (4)
1Connect.By the adapter of polyphone and thermal oil recycle pump (201) with the media outlet b of radiating pipe (4)
2Be subjected to the medium import a of hot coil (6) with radiation
1Connect.By the sender property outlet c that takes over housing (81)
2Working medium import d with housing (51)
1Connect.Working medium import c at housing (81)
1Link to each other by the sender property outlet of pipe connecting with pitch recycle pump (202), the working medium import of pitch recycle pump (202) is connected by pipeline and asphalt storage tank (203,204).The sender property outlet d of housing (51)
2Output port as the working medium behind the output absorption heat.Connecting all the other by method of attachment shown in the figure again can use about parts add distribution control parts again.
When this device is in unloaded situation, should make it fill with working medium and medium earlier.The heated bitumen that the temperature that ships of storing car is about 110 ℃ is injected feed bin and is opened the valve L of feed bin (203) bottom by the opening for feed of feed bin (203,204)
1Or the valve L of feed bin (204) bottom
2, start pitch recycle pump (202), with pitch through valve L
3And the working medium import c on the housing (81)
1, be full of the inner chamber of housing (81).Continue to make pitch recycle pump (202) to work, make pitch in the housing (81) from the media outlet c of housing (81)
2Output is through valve L
4Afterwards, by working medium import d
1Enter housing (51) until the cavity that is full of housing (51).
Open valve D
7, start thermal oil recycle pump (201), make thermal oil through D
7, strainer (205) and thermal oil recycle pump (201) be by medium import a
1Enter radiation and be subjected to hot coil (6) falling heat-transfer oil in coil pipe (6), continue to make recycle pump (201) work, thermal oil is by the media outlet a of coil pipe (6)
2Output is through valve D
1, medium import b
1Enter in the radiating pipe (4).Thermal oil is by media outlet b behind the middle falling heat-transfer oil of radiating pipe (4)
2Flow out radiating pipe (4), again through valve D
2, strainer (205) flow to thermal oil recycle pump (201), carries out the machine internal recycle again and again.Meanwhile, thermal oil flows out radiation and is subjected to behind the hot coil (6) also through the machine Outer Tube through valve D
3Or valve D
5Flow into the heat transfer tube in feed bin (203) or the feed bin (204), again through valve D
4Become D
6Flow out feed bin (203) or feed bin (204), flow back to recycle pump (201) through water-and-oil separator (207), strainer (205), thereby finish the outer loop of thermal oil.
Close the valve D at oil-in place
7, and in expansion slot (206), inject and account for half thermal oil of entire capacity, so that at the consumption of heat-conducting oil system adjusting in service and balance thermal oil.
Above-mentioned work is finished to light a fire and is begun to produce hard pitch or shift to an earlier date for some time igniting by the bituminous date that provides that the client needs.
After the igniting, produce high-temperature flue gas by burner (1) and directly be subjected to hot coil (6) to carry out heating based on radiation to radiation.With the thermal oil that continued to flow in the heat transferred pipe, the thermal oil internal recycle then heats the pitch in the housing (51) by the tube wall of coil pipe (6), and the thermal oil outer circulation is then heated to the pitch in feed bin (203) or the feed bin (204).The benefit that pitch in the feed bin (203,204) is heated is to improve the temperature that enters preheating section (8) medium pitch.The pitch of output pumps in the inner chamber of housing (81) of preheating section (8) through recycle pump (202) from feed bin (203,204).At this moment, heat is passed to the pitch in the housing (81) and made the pitch preheating through the tube wall of fume pipe (9) through the high-temperature flue gas that connected section (7) inner chamber flow to fume pipe (9) by radiation chamber (1), enter through the pitch of preheating in the housing (51) of heat section (5) behind radiating pipe (4) and thermal oil heat-shift and from heat section (5), export.When the asphalt temperature of output is lower than the temperature (for example 180 ℃) of required hard pitch in the heat section (5), then with pitch by valve L
10Send into preheating section (8) preheating again through recycle pump (202), enter heat section (5) heating again.Until from sender property outlet d
2Valve-off L when the asphalt temperature of output reaches temperature required
10Open valve L
5, inject canned vehicle, be transported to required place and use.
After production hard pitch satisfies the demands, and do not have customer demand in a long period, then can consider to cease fire.But valve-off L after the truce
1, L
2, L
3And L
4, open valve L
9And L
8, continue to open valve L
5, continue valve-off L
10And open the exhaust header (85) that is used to dewater and make its double pressure balance mouth of doing, this moment can be with the pitch in the housing (81) by the working medium import c on the housing (81)
1Through valve L
9Flow to recycle pump (202), again by valve L
8By working medium import d
1Pump in the inner chamber of housing (51), again by sender property outlet d
2Output housing (51) is through machine outer tube route valve L
5Output.When the pitch in housing (81) exhausts, recycle pump (202) is quit work.
See Fig. 2 to Fig. 4 and Fig. 6, all the other are with embodiment 1, and difference is that the working medium of the required heating of present embodiment is crude oil.Fume pipe (9) in preheating section (8) housing (81) is to gather to be arranged, and on the front end face of fronttube plate (82) firebreak is not set.
Claims (6)
1, a kind of direct-fired pitch fast heating device, has radiating pipe (4), it is characterized in that this device also has end cap (2), radiation chamber (3), asphalt high-temperature heating zone (5), radiation be heated assembly (6), connected section (7), pitch preheating section (8), exhaust gases passes (9) and fume emission collection case (10); The be heated whole inner cavity of assembly (6) of radiation forms radiation chamber (3); The housing (51) of asphalt high-temperature heating zone (5) is to have the housing that basic configuration is an annulated column shape inner chamber, and radiating pipe (4) is located in the housing (51); Asphalt high-temperature heating zone (5) is provided with around the radiation assembly (6) that is heated, that is the radiation assembly (6) that is heated is located in the space that the circumferential interior plate (51-1) of housing (51) centered on; Exhaust gases passes (9) is located in the housing (81) of pitch preheating section (8); The asphalt high-temperature section of heating (5) links with connected section (7), the other end of connected section (7) and pitch preheating section (8) link, pitch preheating section (8) links with fume emission collection case (10), and the inner chamber of the inner chamber of radiation chamber (3), connected section (7), exhaust gases passes (9) and fume emission collection case (10) connects successively, and end cap (2) is located at the other end of radiation chamber (3); The be heated media outlet a of assembly (6) of radiation
2And the medium import b of radiating pipe (4)
1Be to pass through the mutual anastomosing port of pipeline, the media outlet b of radiating pipe (4)
2With the be heated medium import a of assembly (6) of radiation
1Be to pass through the mutual anastomosing port of pipeline, the sender property outlet c of housing (81)
2And the working medium import d of housing (51)
1Be to pass through the mutual anastomosing port of pipeline.
2, device according to claim 1, it is characterized in that, the radiation assembly (6) that is heated is a coil pipe, coil pipe (6) whole inner cavity is that basic configuration is columniform cavity, contact between each dish of coil pipe (6) is closely contact, thereby forms radiation heating surface (61) at the internal surface of whole coil pipe; Housing (51) is that basic configuration is the housing with annulus cylindrical inner chamber; Between coil pipe (6) and circumferential interior plate (51-1), be provided with upholder (59-1); Radiating pipe (4) is tortuous shape radiating pipe, be provided with a determining deviation between each dish of tortuous shape radiating pipe (4), and the medullary ray of each dish is substantially disposed on the same cylindrical surface; Between tortuous shape radiating pipe (4) and circumferential outer panel (51-2), be provided with upholder (59-2); The port of end cap (2) is the port that the port of burner (1) can be set or connect the hot gas transport pipe.
3, device according to claim 2, it is characterized in that, pitch preheating section (8) has housing (81), fronttube plate (82), back tube plate (83) and traverse baffle (84), fume pipe logical (9) is the many fume pipes that are arranged in parallel, each fume pipe (9) is located between fronttube plate (82) and the back tube plate (83), and with fronttube plate (82) and airtight the fixedlying connected of back tube plate (83); Housing (81) and fronttube plate (82) and airtight the fixedlying connected of back tube plate (83); The traverse baffle that polylith is arranged in parallel (84) is fixed in the inner chamber of housing (81).
4, device according to claim 3, it is characterized in that, connected section (7) has housing (71), refractory liner (72) and firebreak (73), refractory liner (72) is fixed on the inwall of housing (71), firebreak (73) is fixed on the front end face of fronttube plate (82), and the space between refractory liner (72) and the firebreak (73) is the cavity of connected section (7); One end of housing (71) is fixedlyed connected with housing (51), and the other end is fixedlyed connected with housing (81).
5, according to the described device of claim 1～4, it is characterized in that, also be fixed with the exhaust header (85) that communicates with housing (81) inner chamber on the housing (81) of pitch preheating section (8); Be fixed with the venting (55) that communicates with housing (51) inner chamber on the housing (51) of asphalt high-temperature heating zone (5).
6, according to the described device of claim 1～4, it is characterized in that, radiation be heated in the part body of assembly (6) and the body of radiating pipe (4) in be provided with thermal oil, be provided with in the inner chamber of housing (51) and housing (81) under the normal temperature that viscosity higherly is difficult for flowing, heating back flowing property working medium preferably, the be heated media outlet a of assembly (6) of radiation
2It also is the port that can be connected with the outer circulation heating plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97236527 CN2322969Y (en) | 1997-07-08 | 1997-07-08 | Direct combustion fast asphalt heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97236527 CN2322969Y (en) | 1997-07-08 | 1997-07-08 | Direct combustion fast asphalt heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2322969Y true CN2322969Y (en) | 1999-06-09 |
Family
ID=33947367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97236527 Expired - Fee Related CN2322969Y (en) | 1997-07-08 | 1997-07-08 | Direct combustion fast asphalt heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2322969Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002247A (en) * | 2010-12-02 | 2011-04-06 | 天津海泰环保科技发展有限公司 | Electromagnetic wave heater for asphalt heating |
| CN102032573A (en) * | 2010-12-13 | 2011-04-27 | 刘新 | Full premix gas cambered-cylinder infrared burner |
-
1997
- 1997-07-08 CN CN 97236527 patent/CN2322969Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002247A (en) * | 2010-12-02 | 2011-04-06 | 天津海泰环保科技发展有限公司 | Electromagnetic wave heater for asphalt heating |
| CN102002247B (en) * | 2010-12-02 | 2012-05-23 | 天津海泰环保科技发展有限公司 | Electromagnetic wave heater for asphalt heating |
| CN102032573A (en) * | 2010-12-13 | 2011-04-27 | 刘新 | Full premix gas cambered-cylinder infrared burner |
| CN102032573B (en) * | 2010-12-13 | 2013-03-27 | 刘新 | Full premix gas cambered-cylinder infrared burner |
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