CN203269868U - Horizontal type double-sided radiation vacuum furnace for pressure-reducing deep distillation of heavy crude oil - Google Patents
Horizontal type double-sided radiation vacuum furnace for pressure-reducing deep distillation of heavy crude oil Download PDFInfo
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- CN203269868U CN203269868U CN 201320217063 CN201320217063U CN203269868U CN 203269868 U CN203269868 U CN 203269868U CN 201320217063 CN201320217063 CN 201320217063 CN 201320217063 U CN201320217063 U CN 201320217063U CN 203269868 U CN203269868 U CN 203269868U
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Abstract
The utility model discloses a horizontal type double-sided radiation vacuum furnace for pressure-reducing deep distillation of heavy crude oil. The horizontal type double-sided radiation vacuum furnace comprises a furnace body, radiation chambers, convection chambers, radiation hearths, furnace tubes and a combustor, wherein the furnace body is in a structure with the shape of a Chinese character Tu, the convection chamber is positioned above the middle inside the furnace body, two radiation chambers are available, each convection chamber is symmetrically divided into two radiation hearths by a partition wall in the middle, the convection chamber is arranged above the space between the two radiation chambers, the two radiation chambers are partitioned by the space formed by two radiation furnace walls, radiation hearths are in rectangular hollow structures, eight groups of furnace tubes are available, each group of furnace tubes comprises a plurality of horizontal furnace tubes, each group of furnace tubes comprises convection tubes and radiation tubes which are connected by externally rotating oil lines of the furnace body, each part of the convection chamber is horizontally provided with a plurality of rows of convection tubes corresponding to four groups of furnace tubes, the center of each radiation hearth is vertically provided with one row of horizontal pipes, two groups of radiation tubes are further arranged, the inlets of the convection tubes are connected with heating oil product pipelines through flanges, and the outlets of the radiation tubes are connected with input pipelines of a vacuum tower by flanges.
Description
Technical field
The utility model relates to petrochemical industry, in particular to a kind of horizontal type double-side radiation vacuum furnace for heavy crude (API≤22) decompression deep drawing (subtract slag TBP 〉=535 ℃).
Background technology
Atmospheric and vacuum distillation technique is crude oil to be obtained the physics fractionation process of required straight-run spirit, kerosene, diesel oil, wax oil and vacuum residuum by normal pressure/underpressure distillation by heating.Wherein the decompressing unit vacuum furnace is to realize decompression deep drawing (subtract slag TBP 〉=535 ℃), the key equipments of many decompressed wax oils.
The decompression process furnace will from be heated to rapidly reduce pressure 395-445 ℃ of the deep drawing heater outlet temperature of the long residuum at the bottom of atmospheric tower, then advance the vacuum fractionation tower and be separated into gasoline, diesel oil, wax oil and vacuum residuum fast.The design requirements of vacuum furnace is to provide enough institute's heat requirements to oil product in the short period of time, controls again the residence time of oil product in boiler tube, reduces tube coking as far as possible, therefore restricted by the vacuum furnace tube coking.The long period continuous operating time of vacuum furnace is directly connected to cycle of operation of decompressing unit.
The current decompression process furnace, when especially processing overweight non-conventional crude oil (API=6-15) and various asphalt material requirement decompression deep drawing, exist tube coking speed fast, affect long-term operation (blowing out in a year is burnt), perhaps affect the problems such as decompression extracting rate and reduction treatment capacity, thereby cause full factory unplanned shutdown, make productivity effect impaired, maintenance cost and energy consumption increase.
The utility model content
the utility model provides a kind of horizontal type double-side radiation vacuum furnace for heavy crude (API≤22) decompression deep drawing (subtract slag TBP 〉=535 ℃), in order to improve the permission maximum oil film temperature of heavy oil in the decompression heating furnace tube, improve the oil product thermostability, extend the coke induction period of this oil product, and the low intraductal retention time of high quality stream prompt drop, slow down pipe inner membrance coking trend, thereby extend the continuous cycle of operation of process furnace (more than 3 years), namely improve the continuous cycle of operation of atmospheric and vacuum distillation unit, bring significant Social benefit and economic benefit to this device and the production of full factory.
For achieving the above object, the utility model provides a kind of horizontal type double-side radiation vacuum furnace for heavy crude decompression deep drawing, and this vacuum furnace comprises: body of heater, radiation chamber, convection chamber, radiant box will, boiler tube and burner, wherein:
Described body of heater is the convex shape structure, described convection chamber is positioned at the bosom top of described body of heater, described convection chamber is divided into symmetrical two portions by partition wall, described radiation chamber has two, be divided into 2 described radiant box will by the partition wall symmetry in the middle of each described radiation chamber, be described convection chamber above the intermediate space of two described radiation chambers, two described radiation chambers are separated by the space of the both ends open of two radiation furnace walls formation, described radiant box will is the internal space of described radiation chamber, is the hollow structure of rectangle;
Described boiler tube has 8 groups, every group comprises many horizontal boiler tubes, every group of described boiler tube comprises convection tubes and the radiator tube that is connected by the outer transfer line of described body of heater, every part of described convection chamber is horizontally disposed respectively 4 groups of many rows convection tubess that described boiler tube is corresponding, the center of each described radiant box will becomes vertical single lying pipe to be furnished with 2 groups of described radiator tubes, the entrance of described convection tubes is connected with heated oil product pipeline by flange, and the outlet of described radiator tube is connected with the intake pipeline of vacuum distillation tower by flange;
Tube spacing in 4 grades of hole enlargements of radiator tube rear portion outlet pipe section corresponding to some boiler tubes in every group of boiler tube, each described radiant box will between neighbouring described radiator tube is 1.8-3.0 times of described radiator tube external diameter;
The ingress of described convection tubes is provided with the first light coker gas oil LCGO inlet, the entrance of described radiator tube is provided with the second light coker gas oil LCGO inlet, the described first light coker gas oil LCGO inlet and the second light coker gas oil LCGO inlet are connected with hot LCGO pipeline from fractionating system by flange respectively, the front somewhere of hole enlargement pipeline section, rear portion of described radiator tube is provided with heavy coker gas oil HCGO inlet, and described heavy coker gas oil HCGO inlet is connected with hot HCGO pipeline from fractionating system by flange;
The number of described burner is a plurality of, and 2 groups of described radiator tube zygomorphy are arranged in each described radiant box will, at the bottom of each described burner is positioned at described radiant box will in the mode of upwards burning, and arranges vertically upward along furnace wall.
Optionally, described burner is double-row hole or many rounds inclination perforate burner tip structure.
Optionally, the ingress of described convection tubes is provided with the first oil product temperature thermocouple, and the ingress of described radiator tube is provided with the second oil product temperature thermocouple, and the exit of described radiator tube is provided with the 3rd oil product temperature thermocouple.
Optionally, described convection tubes bottom tube wall is outside equipped with 2 boiler tube surface thermocouples, and described radiator tube entrance to the boiler tube up and down surface of outlet is provided with 6-8 boiler tube surface thermocouple.
Optionally, the ingress of described convection tubes, the inlet end of described radiator tube are respectively arranged with the steam injection mouth, described steam injection mouth be connected from outer vapour line for system.
Optionally, be respectively arranged with flow control valve on described hot LCGO pipeline and described hot HCGO pipeline.
Optionally, the front somewhere of hole enlargement pipeline section, rear portion of described radiator tube is provided with heavy coker gas oil HCGO inlet, described heavy coker gas oil HCGO inlet be connected in order to the pipeline of annotating HCGO, described in order to be provided with flow control valve on the pipeline of annotating HCGO.
Optionally, the angle of the both sides furnace wall of described radiant box will bottom and horizontal plane is between 75 ° to 90 °.
Optionally, the both sides furnace wall on described radiant box will top becomes 90 ° with the angle of horizontal plane.
above-described embodiment is for mink cell focus characteristic and the 420-435 ℃ of heater outlet temperature of decompression furnace charge in atmospheric and vacuum distillation unit, annotate a small amount of high pressure steam at convection tubes entrance or radiator tube entrance, and inject respectively appropriate LCGO and HCGO before the entrance of radiator tube and rear portion hole enlargement pipeline section, to reduce the ratio of furol viscosity and raising (aromatic hydrocarbons+colloid)/(bituminous matter+stable hydrocarbon), improved processing medium thermostability in pipe, improve it and allow the maximum oil film temperature, extended coke induction period, and the low medium residence time of high quality stream prompt drop, slow down pipe inner membrance coking trend, thereby extend the continuous cycle of operation of vacuum furnace (more than 3 years), namely improved the continuous cycle of operation of atmospheric and vacuum distillation unit, reduce unplanned shutdown and burnt number of times, and medium hydrocarbon partial pressure and pressure drop in furnace tube in pipe have been reduced, be conducive to improve the oil product extracting rate and reduce the fresh feed pump power consumption, so it is obvious producing the Social benefit and economic benefit that brings to coker and full factory.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the horizontal type double-side radiation vacuum furnace schematic diagram that is used for heavy crude decompression deep drawing of an embodiment of the utility model.
In Fig. 1, label is as follows: body of heater 1, convection chamber 2, radiation chamber 3, radiant box will 4, convection tubes 5, radiator tube 6, burner 7, the first oil product temperature thermocouples 8, the second oil product temperature thermocouple 9, the three oil product temperature thermocouples 10, oil product input tube 11, vertical section furnace wall 12, steam injection mouth 13, LCGO transfer lime 14, HCGO transfer lime 15, transfer line 16, variable valve group 17, space 18, boiler tube surface thermocouple 19, radiation chamber midfeather 20.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not paying the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the horizontal type double-side radiation vacuum furnace schematic diagram that is used for heavy crude decompression deep drawing of an embodiment of the utility model.As shown in the figure, this vacuum furnace comprises: body of heater 1, convection chamber 2, radiation chamber 3, radiant box will 4, convection tubes 5, radiator tube 6 and burner 7, wherein:
body of heater 1 is the convex shape structure, convection chamber 2 is positioned at the bosom top of body of heater 1, convection chamber 2 is divided into symmetrical two portions by partition wall, radiation chamber 3 has two, be divided into 2 radiant box will 4 by radiation chamber midfeather 20 symmetries in the middle of each radiation chamber 3, radiant box will 4 is the internal space of radiation chamber 3, hollow structure for rectangle, the middle upper part of two radiation chambers 3 is convection chamber 2, two radiation chambers 3 are separated by the space 18 of the both ends open that two vertical radiation furnace walls 12 form, as shown in the figure, in figure, 12 is the vertical section radiation furnace wall in the space 18 of this both ends open, wherein, here the space 18 of said both ends open refers to only have the upright radiation furnace wall 12 in two sides and the end of convection chamber and the space of furnace bottom formation.2 radiation chambers 3 share convection chamber 2, convection chamber 2 top exhanst gas outlets are provided with the associating flue, the high-temperature flue gas that burner combustion produces is by the radiation chamber 3 upper convection chambers 2 that flow in radiation top, after heated convection pipe (boiler tube convection zone) 5 interior coking oil, flue gas flows to the further Mist heat recovering of air preheater through the associating flue, finally by entering atmosphere by chimney, in figure, arrow A represents that flue gas flow is toward the direction of air preheater;
totally 8 groups, boiler tube is arranged in body of heater 1, 8 groups of horizontally disposed convection tubess 5 are arranged in convection chamber 2, 2 groups of radiator tubes (boiler tube radiation section) 6 are arranged in each radiant box will 4, every group of radiator tube 6 comprises many horizontally disposed lying pipes, every group of boiler tube comprises the 1 group of radiator tube 6 that is positioned at 1 group of horizontally disposed convection tubes of convection chamber 5 and is positioned at the vertical single lying pipe layout in radiant box will center, convection tubes 5 is connected with the transfer line of radiator tube 6 outside body of heater 1, the entrance of convection tubes 5 is connected with oil product input tube 11, the outlet of radiator tube 6 is connected with vacuum distillation tower by transfer line 16, in figure, arrow B represents that the oil product after heating flows to the direction of vacuum distillation tower,
6 one-tenth vertical single lying pipes of every 2 groups of radiator tubes are arranged in each radiant box will center, some pipeline section hole enlargements before corresponding radiator tube 6 rear portions outlets in every group of boiler tube, and for example the caliber of every group of radiator tube 6 can be by 4 cun hole enlargements to 10 cun piecemeal; Enlarge simultaneously the tube spacing of radiator tube, tube spacing in each radiation chamber between the adjacent radiation pipe is set to 1.8-3.0 times of radiator tube external diameter, adopt the tube spacing technology of boiler tube hole enlargement and increasing boiler tube, reduced the hot strength circumferential asymmetry even coefficient of the nearly outlet section pyrocondensation of radiating furnace tube district boiler tube, reduce the relative coking factor, slow down condensation reaction, relatively can reduce tube skin temperature;
enter the charging viscosity of convection coil 5 interior low grade oilses for reduction, can be provided with in the ingress of every group of convection tubes 5 the first light coker gas oil LCGO inlet, the entry position of every group of radiator tube 6 is provided with the second light coker gas oil LCGO inlet, the hole enlargement pipeline section front somewhere of radiator tube 6 is provided with heavy coker gas oil HCGO inlet, the first light coker gas oil LCGO inlet is connected with LCGO transfer lime 14 respectively with the second light coker gas oil LCGO inlet, heavy coker gas oil HCGO inlet is connected with HCGO transfer lime 15, inject respectively coking LCGO and the HCGO cut of appropriate relatively high (aromatic hydrocarbons+colloid)/(stable hydrocarbon+bituminous matter) ratio before radiator tube entrance and rear hole enlargement pipeline section, slow down and be heated oil product in boiler tube, especially manage the inner membrance temperature rise rate, relax coking trend.Again for example, for regulating the rate of injection of LCGO and HCGO, can also on LCGO transfer lime 14, HCGO transfer lime 15, variable valve group 17 be set respectively;
The number of burner 7 is a plurality of, arranges in the boiler tube zygomorphy at radiant box will 4 centers respectively, and at the bottom of each burner 7 is positioned at radiant box will in the mode of upwards burning, and symmetrical arranging vertically upward along furnace wall.For example, burner 7 can match with vertical section furnace wall 12 for double-row hole or many rounds inclination perforate burner tip structure, makes the burning of flame attached wall, improves the uniform distribution of temperature field of vacuum furnace radiation chamber, improves the radiative transfer effect of vacuum furnace radiation chamber.During concrete enforcement; no more than 16 of the number of the single burner that the suggestion WALL CLOTH is put; the normal flame height of single burner is that 1/3 burner hearth is high; the both sides furnace wall of radiant box will bottom and the angle α of horizontal plane are between 75 ° to 90 °, and the both sides furnace wall on radiant box will top becomes 90 ° with the angle of horizontal plane.
above-described embodiment is for mink cell focus (API≤22) low thermal stability of decompression furnace charge in atmospheric and vacuum distillation unit, inject appropriate LCGO and HCGO in the entrance of vacuum furnace radiator tube and rear hole enlargement pipeline section front somewhere to reduce the ratio of heavy viscosity and raising (aromatic hydrocarbons+colloid)/(bituminous matter+stable hydrocarbon), improved processing medium thermostability in pipe, extended coke induction period, slowed down pipe inner membrance coking trend, extended the continuous cycle of operation of vacuum furnace, namely improved the continuous cycle of operation of atmospheric and vacuum distillation unit, reduce unplanned shutdown and burnt number of times, so it is obvious producing the Social benefit and economic benefit that brings to atmospheric and vacuum distillation unit and full factory.
When being heated oil product temperature rise＞1.5-2.5 ℃/day in radiating furnace tube, keeping in normal steam injection amount situation, inject appropriate LCGO cut at the radiator tube entrance, when temperature rise＞1.5-2.5 ℃/day of rear hole enlargement pipeline section heated oil product, keeping in normal steam injection amount situation, appropriate HCGO cut is injected in the front somewhere of rear hole enlargement pipeline section, make the temperature rise of pipe inner membrance drop to＜about 0.56 ℃/day.
To inject appropriate LCGO amount be at steam injection amount≤0.2-0.5m% situation LCGO0.1-0.5m% that makes a bet; The HCGO amount is annotated at steam injection amount≤0.2-0.5m% situation HCGO0.2-0.5m% that makes a bet in the present technique place.
For detecting the temperature variation of oil product in the vacuum furnace boiler tube, can also be provided with in the ingress of convection tubes 5 the first oil product temperature thermocouple 8, be provided with the second oil product temperature thermocouple 9 in the ingress of radiator tube 6, be provided with the 3rd oil product temperature thermocouple 10 in the exit of radiator tube 6, can in time detect like this temperature rise speed of oil product in boiler tube.
In addition, in order to detect the temperature variation of boiler tube, can also be outside equipped with 2 boiler tube surface thermocouples at convection tubes bottom tube wall, be provided with 6-8 boiler tube surface thermocouple 19 on radiator tube entrance to the boiler tube up and down surface of outlet, can in time detect like this temperature rise speed of boiler tube.
For example, the ingress of convection tubes 5, the inlet end of radiator tube 6 is respectively arranged with steam injection mouth 13, the steam injection mouth be connected from outer vapour line for system.
Below for the vacuum furnace in Fig. 1 embodiment being applied to the example of atmospheric and vacuum distillation unit: the vacuum furnace with external certain 8,000,000 ton/years of atmospheric and vacuum distillation unit is designed to example, adopts " the double-side radiation vacuum furnace is burnt at ' rectangle ' end of annotating stable distillate ".This type of furnace design conditions is the high harshness of this vacuum furnace charging: the normal slag of Venezuela's extra heavy oil (＞TBP350 ℃), API °=6.026, d
20=1.0289g/cm
3, the residual C of health
R=19.7m%, viscosity ν
100=2548cst, asphalt content=12.36m%, bituminous matter/colloid ratio=0.5＞0.353, C/H atomic ratio=0.6481, processing difficulty or ease extent index K
R=2.5749＜4.0, so belong to difficult hot worked cycloalkyl raw material, bituminous matter is easily separated out from colloidal dispersion.Can adopt the design of vacuum furnace in Fig. 1 embodiment.
the embodiment of this vacuum furnace is: adopt the end of " rectangular configuration " radiation chamber of the notes stability distillate of slow down coking trend to burn the attached wall burning double-side radiation type of furnace and 4 grades expander footpaths and strengthen the tube spacing design piecemeal, normal residual oil divides 8 tube sides successively through convection chamber with the feeding manner of " upper entering and lower leaving ", radiation chamber is warming up to temperature required (approximately 410-420 ℃), wherein every 2 radiation chambers share 1 convection chamber, in each radiation chamber, centrosymmetry is separated into 2 radiant box will, can realize under 4 tube side 60-65% thermal loads, the on-line decoking of another 4 tube sides and mechanical decoking.Fuel gas is through the vertically arranged burner of furnace bottom, combustion flame attached wall burning decompression furnace wall, combustion flame and high-temperature flue gas are along " rectangle " radiant box will attached wall burning and upwards mobile, institute's heat requirement is provided for the oil product that is heated in boiler tube, high-temperature flue gas pushes up through radiant box will and upwards flows into convection chamber, after the normal slag charging of preheating extra heavy oil, flows to the further Mist heat recovering of air preheater through the associating flue, make the stove design thermal efficiency reach 92.0%, last flue gas enters atmosphere via chimney.To be heated oil property in boiler tube in order improving, especially to move and be heated oil property in the later stage pipe, relax coking trend, extend the continuous cycle of operation of vacuum furnace, adopt the Technology of annotating LCGO and HCGO cut.Inject respectively appropriate LCGO and HCGO in the entrance of vacuum furnace radiation section and rear hole enlargement pipeline section front somewhere to reduce normal slag viscosity and to improve aromatic hydrocarbons/bituminous matter ratio, aromatic hydrocarbons+colloid/bituminous matter ratio, improve the stability that is heated oil product in pipe, and reduction condensation reaction rate, realization slows down pipe inner membrance coking trend, thereby extends continuous operating time.Embodiment is for when being heated oil product temperature rise＞1.68 ℃/day in the forward and backward pipeline section of radiating furnace tube, keeping in steam injection amount situation, radiator tube is as injecting the LCGO cut, then inject the HCGO cut before the hole enlargement pipeline section, can make in pipe the processing medium temperature rise ℃/day drop to from Δ T＞1.68＜about 0.56 ℃/day.Simultaneously, also can be according to the variation tendency of boiler tube inlet pressure and coil outlet temperature, especially radiator tube surface thermocouple temperature rise trend, judgement tube coking situation, in time the serious tube side of coking is stopped half (4 tube side) on-line decoking and mechanical decoking operation, to guarantee the continuous long-term operation of coker.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, and the module in accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device in embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the utility model embodiment technical scheme.
Claims (8)
1. a horizontal type double-side radiation vacuum furnace that is used for heavy crude decompression deep drawing, is characterized in that, comprising: body of heater, radiation chamber, convection chamber, radiant box will, boiler tube and burner, wherein:
Described body of heater is the convex shape structure, described convection chamber is positioned at the bosom top of described body of heater, described convection chamber is divided into symmetrical two portions by partition wall, described radiation chamber has two, be divided into 2 described radiant box will by the partition wall symmetry in the middle of each described radiation chamber, be described convection chamber above the intermediate space of two described radiation chambers, two described radiation chambers are separated by the space of the both ends open of two radiation furnace walls formation, described radiant box will is the internal space of described radiation chamber, is the hollow structure of rectangle;
Described boiler tube has 8 groups, every group comprises many horizontal boiler tubes, every group of described boiler tube comprises convection tubes and the radiator tube that is connected by the outer transfer line of described body of heater, every part of described convection chamber is horizontally disposed respectively 4 groups of many rows convection tubess that described boiler tube is corresponding, the center of each described radiant box will becomes vertical single lying pipe to be furnished with 2 groups of described radiator tubes, the entrance of described convection tubes is connected with heated oil product pipeline by flange, and the outlet of described radiator tube is connected with the intake pipeline of vacuum distillation tower by flange;
Tube spacing in 4 grades of hole enlargements of radiator tube rear portion outlet pipe section corresponding to some boiler tubes in every group of boiler tube, each described radiant box will between neighbouring described radiator tube is 1.8-3.0 times of described radiator tube external diameter;
The ingress of described convection tubes is provided with the first light coker gas oil LCGO inlet, the entrance of described radiator tube is provided with the second light coker gas oil LCGO inlet, the described first light coker gas oil LCGO inlet and the second light coker gas oil LCGO inlet are connected with hot LCGO pipeline from fractionating system respectively by flange, the front somewhere of hole enlargement pipeline section, rear portion of described radiator tube is provided with heavy coker gas oil HCGO inlet, and described heavy coker gas oil HCGO inlet is connected with hot HCGO pipeline from fractionating system by flange;
The number of described burner is a plurality of, and 2 groups of described radiator tube zygomorphy are arranged in each described radiant box will, at the bottom of each described burner is positioned at described radiant box will in the mode of upwards burning, and arranges vertically upward along furnace wall.
2. vacuum furnace according to claim 1, is characterized in that, described burner is double-row hole or many rounds inclination perforate burner tip structure.
3. vacuum furnace according to claim 1, it is characterized in that, the ingress of described convection tubes is provided with the first oil product temperature thermocouple, and the ingress of described radiator tube is provided with the second oil product temperature thermocouple, and the exit of described radiator tube is provided with the 3rd oil product temperature thermocouple.
4. vacuum furnace according to claim 1, is characterized in that, described convection tubes bottom tube wall is outside equipped with 2 boiler tube surface thermocouples, and described radiator tube entrance to the boiler tube up and down surface of outlet is provided with 6-8 boiler tube surface thermocouple.
5. vacuum furnace according to claim 1, is characterized in that, the ingress of described convection tubes, the inlet end of described radiator tube are respectively arranged with the steam injection mouth, described steam injection mouth be connected from outer vapour line for system.
6. vacuum furnace according to claim 1, is characterized in that, is respectively arranged with flow control valve on described hot LCGO pipeline and described hot HCGO pipeline.
7. vacuum furnace according to claim 1, is characterized in that, the both sides furnace wall of described radiant box will bottom and the angle of horizontal plane are between 75 ° to 90 °.
8. vacuum furnace according to claim 1, is characterized in that, the both sides furnace wall on described radiant box will top becomes 90 ° with the angle of horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320217063 CN203269868U (en) | 2013-04-25 | 2013-04-25 | Horizontal type double-sided radiation vacuum furnace for pressure-reducing deep distillation of heavy crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320217063 CN203269868U (en) | 2013-04-25 | 2013-04-25 | Horizontal type double-sided radiation vacuum furnace for pressure-reducing deep distillation of heavy crude oil |
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| CN203269868U true CN203269868U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320217063 Withdrawn - After Issue CN203269868U (en) | 2013-04-25 | 2013-04-25 | Horizontal type double-sided radiation vacuum furnace for pressure-reducing deep distillation of heavy crude oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242888A (en) * | 2013-04-25 | 2013-08-14 | 中国寰球工程公司 | Horizontal double-sided radiation vacuum furnace for vacuum deep cut of heavy crude oil |
| CN104896926A (en) * | 2015-06-01 | 2015-09-09 | 北京中科诚毅科技发展有限公司 | Novel heating furnace with multi-hearth structure |
-
2013
- 2013-04-25 CN CN 201320217063 patent/CN203269868U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242888A (en) * | 2013-04-25 | 2013-08-14 | 中国寰球工程公司 | Horizontal double-sided radiation vacuum furnace for vacuum deep cut of heavy crude oil |
| CN104896926A (en) * | 2015-06-01 | 2015-09-09 | 北京中科诚毅科技发展有限公司 | Novel heating furnace with multi-hearth structure |
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Granted publication date: 20131106 Effective date of abandoning: 20141224 |
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| RGAV | Abandon patent right to avoid regrant |