CN102818366A - Large heat-conducting-oil circulation heating process device - Google Patents

Large heat-conducting-oil circulation heating process device Download PDF

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Publication number
CN102818366A
CN102818366A CN2012102998225A CN201210299822A CN102818366A CN 102818366 A CN102818366 A CN 102818366A CN 2012102998225 A CN2012102998225 A CN 2012102998225A CN 201210299822 A CN201210299822 A CN 201210299822A CN 102818366 A CN102818366 A CN 102818366A
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China
Prior art keywords
oil
heat
conducting
conduction oil
control loop
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CN2012102998225A
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Chinese (zh)
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侯国华
闫美娟
王永锋
丁延泽
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Tianjin Chenchuang Environment Engineering Science & Technology Co Ltd
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Tianjin Chenchuang Environment Engineering Science & Technology Co Ltd
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Priority to CN2012102998225A priority Critical patent/CN102818366A/en
Publication of CN102818366A publication Critical patent/CN102818366A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

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Abstract

The invention discloses a large heat-conducting-oil circulation heating process device, comprising a heat-conducting-oil heating furnace, a burner, an air preheater, a blower, an induced draft fan, a heat-conducting-oil circulation pump, a heat-conducting-oil expansion groove, an oil storage groove and an oil filling pump, wherein a heat-conducting-oil outlet temperature control loop is connected between an outlet pipe of the heating furnace and an inlet pipe of the burner; a combustion-supporting air flow control loop is connected among the heat-conducting-oil heating furnace, the blower and the inlet pipe of the burner; a pressure control loop, the induced draft fan, an emptying tank and a submerged pump are arranged between a heat-conducting-oil inlet main pipe and a heat-conducting-oil outlet main pipe; the oil storage groove is arranged on the ground, the emptying tank is arranged under the ground, and is provided with the submerged pump, and an outlet is connected with the heat-conducting-oil expansion groove and the oil storage groove. The large heat-conducting-oil circulation heating process device disclosed by the invention has the characteristics of low operation pressure, reliable operation, high heating efficiency and accurate outlet temperature control and the like, and can be widely applied in the industries such as petroleum, chemical industry, electronics, textile, printing and dyeing, foods and plastics and the like.

Description

Large-scale conduction oil circulation heating process device
Technical field
The present invention relates to the heat carrier heating process, relate in particular to a kind of large-scale conduction oil circulation heating process device.
Background technology
The heat-conducting oil heating process unit is the widely used heat carrier heating process of industry devices such as present oil, chemical industry, electronics, weaving, printing and dyeing, food, plastics.Traditional heat-conducting oil heating process unit mainly comprises equipment such as heating furnace, circulating pump, expansion slot, oil storage tank, filling pump; Capital equipment heating furnace wherein adopts integrated helical disk cast heating furnace more; Expansion slot and oil storage tank adopt the horizontal vessel type more; Though, being easy to the medium in the emptying boiler tube, the separate unit maximum heating load can only be accomplished 1500x10 4Kcal/h makes the single device ability receive limitation.Along with the progressively expansion of process units, the thermic load that needs is also increasing, and the conduction oil loadings of system is also bigger; Adopt traditional process unit; Must adopt many heat-conducting oil furnace parallel connections, the volume of storage facilities is huge, therefore; Whole heat conduction furnace apparatus floor space after many parallel connections is bigger, and the cost of civil engineering structure is also than higher.
In addition, traditional heat transfer oil heater is the malleation stove, and the employing air blast overcomes the resistance of air and gas system, therefore, and the bad control of furnace pressure; Also have, traditional conduction oil expansion slot adopts the horizontal vessel type more, and oil storage tank adopts horizontal vessel or flat cone roof tank more; Its floor space is bigger, and according to the supervision rules of heat carrier, expansion slot must be positioned at the above 1.5m of whole Circulation and Hot Oil Spray loop peak; Therefore, for large-scale hot oil heater, expansion slot volume wherein is very big; If adopt traditional frame structure, then expense is very high.Normally the conduction oil storage tank is arranged on undergroundly in traditional hot oil heater, has strengthened civil engineering cost.
Summary of the invention
To above-mentioned prior art, the present invention provides a kind of large-scale conduction oil circulation heating process device.The present invention has characteristics such as operating pressure is low, reliable, the efficiency of heating surface is high, outlet temperature control is accurate, can be widely used in the industries such as oil, chemical industry, electronics, weaving, printing and dyeing, food, plastics.
In order to solve the problems of the technologies described above, the technical scheme that the large-scale conduction oil circulation of the present invention heating process device is achieved is: comprise heat transfer oil heater, burner, air preheater, air blast, conduction oil circulating pump, conduction oil expansion slot, oil storage tank and filling pump; Between the inlet tube of the outlet of said heat transfer oil heater and said burner, be connected with conduction oil outlet temperature control loop; Between the inlet tube of said heat transfer oil heater, air blast and burner, be connected with the combustion air flow control loop; The conduction oil turnover house steward of said heat transfer oil heater is parallel with conduction oil delivery trunk pressure control loop, also is provided with air-introduced machine, emptying jar and submerged pump; Said oil storage tank is installed on the ground, and said emptying jar is arranged on underground, and said conduction oil expansion slot all is connected with the mouth of pipe of said emptying jar with oil storage tank, and said submerged pump is located on the emptying jar, and the outlet of said submerged pump is connected with conduction oil expansion slot, oil storage tank.
The large-scale conduction oil circulation of the present invention heating process device, wherein, said heat transfer oil heater is vertical tubular type negative pressure stove; Said conduction oil expansion slot places the top of said oil storage tank.
Compare with traditional conduction oil circulation heating process device, the invention has the beneficial effects as follows:
Because the heat transfer oil heater pattern among the present invention is with traditional different, traditional heat transfer oil heater is an integrated helical disk cast, include vertical or horizontal dual mode, but the separate unit maximum heating load can only be accomplished 1500x10 4Kcal/h, the heat transfer oil heater among the present invention are the vertical tubular furnace type, and its separate unit maximum heating load can reach 4000x10 4Kcal/h, for large-scale hot oil heater, the heating furnace floor space of this type of furnace is smaller.In addition; The tradition heat transfer oil heater is the malleation stove, adopts air blast to overcome the resistance of air and gas system, and the heat transfer oil heater among the present invention is the negative pressure stove; And, overcome the resistance of air and gas system through the common mating reaction of air blast and air-introduced machine through setting up air-introduced machine and furnace pressure control loop.
All traditional different of conduction oil expansion slot among the present invention and oil storage tank, traditional conduction oil expansion slot adopts the horizontal vessel type more, and oil storage tank adopts horizontal vessel or flat cone roof tank more; Both floor spaces are bigger; And according to the supervision rules of heat carrier, the conduction oil expansion slot will be positioned at the above 1.5m of whole Circulation and Hot Oil Spray loop peak, therefore; For large-scale hot oil heater; Wherein the volume of conduction oil expansion slot can be very big, if adopt traditional frame structure, then expense is very high.Therefore; Conduction oil expansion slot among the present invention and the position of oil storage tank relation are the tops that the conduction oil expansion slot is placed oil storage tank; And adopt the tower structure, so not only can save floor space, simultaneously; The body of oil storage tank 8 has also served as the support of conduction oil expansion slot, thereby has saved the cost of support frame.
Emptying jar and submerged pump have been set up among the present invention; The emptying jar is positioned at underground, conduction oil can flow by gravity back in this emptying jar, in addition; This emptying jar is during also as examination and repair system; Intermediate storage tank when serving as conduction oil and moving back oil, it is smaller that the volume of this emptying jar can be provided with, and so also can save in the conventional apparatus to be arranged on the civil engineering cost when underground to the conduction oil storage tank.
Description of drawings
Accompanying drawing is a kind of large-scale conduction oil circulation heating process device flow chart of the present invention.
Among the figure: the 1-heat transfer oil heater, the 2-burner, the 3-air preheater, the 4-air blast, the 5-air-introduced machine, 6-conduction oil circulating pump, 7-conduction oil expansion slot, the 8-oil storage tank, 9-emptying jar, the 10-submerged pump, the 11-main oil pump, the 12-heat exchanger,
Gaseous-pressure indication adjustment control in the PIC001-conduction oil outlet temperature control loop,
Temperature indication adjustment control in the TIC001-conduction oil outlet temperature control loop,
Control valve in the PCV001-conduction oil outlet temperature control loop, the pressure indication adjustment control in the PIC002-furnace pressure control loop,
Fuel gas flow parameter regulation controller in the FIC003-combustion air flow control loop,
Flue gas oxygen content parameter regulation controller in the AIC003-combustion air flow control loop,
Flue gas oxygen content transmitter in the AT3-combustion air flow control loop
Pressure indication adjustment control in the PIC004-conduction oil delivery trunk pressure control loop,
Control valve in the CV004-conduction oil delivery trunk pressure control loop.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is done to describe in further detail.
Shown in accompanying drawing; The present invention is a kind of large-scale conduction oil circulation heating process device, comprises heat transfer oil heater 1, burner 2, air preheater 3, air blast 4, air-introduced machine 5, conduction oil circulating pump 6, conduction oil expansion slot 7, oil storage tank 8, emptying jar 9, submerged pump 10, filling pump 11 and heat exchanger 12; Said heat transfer oil heater 1 is vertical tubular type negative pressure stove; Said oil storage tank 8 is installed on the ground; Said emptying jar 9 is arranged on underground, and said conduction oil expansion slot 7 all is connected with the mouth of pipe of said emptying jar 9 with oil storage tank 8, and the outlet of said submerged pump 10 is connected with conduction oil expansion slot 7, oil storage tank 8.
Be provided with following control loop in the whole process unit:
Between the inlet tube of the outlet of said heat transfer oil heater and said burner 2, be connected with conduction oil outlet temperature control loop, the pipeline shown in two-wire in the accompanying drawing; Be provided with gaseous-pressure indication adjustment control PIC001 and temperature indication adjustment control TIC001 in this conduction oil outlet temperature control loop, on the fuelgas pipeline that leads to burner 2 imports, be provided with control valve PCV001.
Between the inlet tube of said heat transfer oil heater 1, air blast 4 and burner, be connected with the combustion air flow control loop, as having the pipeline shown in the circle straight line in the accompanying drawing; Be provided with fuel gas flow parameter regulation controller FIC-003, flue gas oxygen content parameter regulation controller AIC003 and flue gas content transmitter AT3 in this combustion air flow control loop;
The conduction oil turnover house steward of said heat transfer oil heater 1 is parallel with conduction oil delivery trunk pressure control loop, the pipeline shown in dotted line in the accompanying drawing; Be provided with pressure indication adjustment control PIC004 and control valve CV004 in this conduction oil delivery trunk pressure control loop;
Be connected with the furnace pressure control loop between said heat conduction stove heating furnace 1 and the said air-introduced machine 5, as having the pipeline shown in the short stroke straight line of diclinic in the accompanying drawing; Be provided with pressure indication adjustment control PIC002 in this furnace pressure control loop.
Between said conduction oil expansion slot 7, oil storage tank 8 and emptying jar 9, be connected with overflow line.
The course of work of the large-scale conduction oil circulation of the present invention heating process device is: utilize heat transfer oil heater 1 that conduction oil is directly heated; And the conduction oil that will carry out after forced circulation will heat through conduction oil circulating pump 6 is transported to the hot equipment of using; Reheat by getting back to hot oil furnace again, thereby form the process unit of a complete cycle with hot equipment oil-out.
At first; Heat medium (conduction oil) is discharged to the oil storage tank 8 from oil drum or tank car through filling pump 11, and through the tube connector between oil storage tank 8 and the emptying jar 9, conduction oil flows automatically in the emptying jar 9 then; Submerged pump 10 through being installed on the emptying jar 9 is transported to conduction oil in the conduction oil expansion slot 7; Through conduction oil expansion slot 7 oiling in whole system, behind the whole falling heat-transfer oil of hot oil line, start conduction oil circulating pump 6 in the system again; Make conduction oil between user's (heat exchanger 12) and heat transfer oil heater 1, circulate; Conduction oil absorbs the fuel combustion liberated heat in heat transfer oil heater 1, be transported to return heat absorption in the heat transfer oil heater 1 in the heat exchanger 12 after the heat release, forms a heat supply circulation.
In order to improve the thermal efficiency of heat transfer oil heater 1, be provided with air preheater 3 in fume side, improve the thermal efficiency, fuel saving through reducing exhaust gas temperature.
When system maintenance need move back oil, the deep fat in equipment and the pipeline was got back in the emptying jar 9 through flow by gravity earlier, was pumped in the oil storage tank 8 through the submerged pump on the emptying jar 9 10 to store again.
The function in major control loop is following among the present invention:
Conduction oil outlet temperature control loop; Through the control valve PCV-001 on the tandem loop fuel metering tracheae line of conduction oil outlet temperature indication adjustment control TIC-001 and gaseous-pressure indication adjustment control PIC-001 composition; Thereby control gets into the fuel quantity of burner 2, realizes the adjusting of heat transfer oil heater 1 thermic load.
Combustion air flow control loop: form the controllable register that air blast 4 imports are regulated in the tandem loop through flue gas oxygen content parameter regulation controller AIC003 and fuel gas flow parameter regulation controller FIC-003; Thereby control gets into the air capacity of burner 2, cuts down the consumption of energy when guaranteeing full combustion of fuel.
Furnace pressure control loop: indicate the inlet adjusting baffle plate of the signal controlling air-introduced machine 5 of adjustment control PIC-002 through furnace pressure, thereby guarantee the safe operation under little negative pressure of heat transfer oil heater 1 burner hearth.
Conduction oil delivery trunk pressure control loop: through the pressure indication adjustment control PIC-004 of conduction oil delivery trunk and the bypass flow between the control valve CV004 control conduction oil turnover house steward, the conduction oil pressure of stable output.
Although invention has been described for top combination figure; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Under the situation that does not break away from aim of the present invention, can also make a lot of distortion, these all belong within the protection of the present invention.

Claims (3)

1. one kind large-scale conduction oil circulation heating process device comprises heat transfer oil heater (1), burner (2), air preheater (3), air blast (4), conduction oil circulating pump (6), conduction oil expansion slot (7), oil storage tank (8) and filling pump (11); Between the inlet tube of the outlet of said heat transfer oil heater and said burner (2), be connected with conduction oil outlet temperature control loop; Between the inlet tube of said heat transfer oil heater (1), air blast (4) and burner (2), be connected with the combustion air flow control loop; The conduction oil turnover house steward of said heat transfer oil heater (1) is parallel with conduction oil delivery trunk pressure control loop, it is characterized in that:
Also be provided with air-introduced machine (5), emptying jar (9) and submerged pump (10); Be connected with the furnace pressure control loop between said heat conduction stove heating furnace (1) and the said air-introduced machine (5); Said oil storage tank (8) is installed on the ground; Said emptying jar (9) is arranged on underground; Said conduction oil expansion slot (7) all is connected with the mouth of pipe of said emptying jar (9) with oil storage tank (8); Said submerged pump (10) is located on the emptying jar (9), and the outlet of said submerged pump (10) is connected with oil storage tank (8) with conduction oil expansion slot (7).
2. according to the said large-scale conduction oil circulation heating process device of claim 1, it is characterized in that said heat transfer oil heater (1) is vertical tubular type negative pressure stove.
3. according to the said large-scale conduction oil circulation heating process device of claim 1, it is characterized in that said conduction oil expansion slot (7) places the top of said oil storage tank (8).
CN2012102998225A 2012-08-21 2012-08-21 Large heat-conducting-oil circulation heating process device Pending CN102818366A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482340A (en) * 2016-11-24 2017-03-08 郑新军 A kind of new normal pressure heat-conducting oil furnace
CN107151965A (en) * 2017-07-18 2017-09-12 河南路诚机电制造有限公司 A kind of moveable electrical heating tank of energy-conserving and environment-protective and its heating means

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101655245A (en) * 2009-09-04 2010-02-24 江苏焱鑫科技股份有限公司 Multiparameter automatic control method of industrial furnace burner
JP2010145061A (en) * 2008-12-22 2010-07-01 Samson Co Ltd Heating medium system
CN202216277U (en) * 2011-08-02 2012-05-09 威海宝源电气有限公司 Automatic control device for a combustor type industrial boiler
CN202747612U (en) * 2012-08-21 2013-02-20 天津辰创环境工程科技有限责任公司 Large heat-conducting oil cyclic heating process device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010145061A (en) * 2008-12-22 2010-07-01 Samson Co Ltd Heating medium system
CN101655245A (en) * 2009-09-04 2010-02-24 江苏焱鑫科技股份有限公司 Multiparameter automatic control method of industrial furnace burner
CN202216277U (en) * 2011-08-02 2012-05-09 威海宝源电气有限公司 Automatic control device for a combustor type industrial boiler
CN202747612U (en) * 2012-08-21 2013-02-20 天津辰创环境工程科技有限责任公司 Large heat-conducting oil cyclic heating process device

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Title
侯国华: "导热油加热系统设计", 《化工设备与管道》 *
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482340A (en) * 2016-11-24 2017-03-08 郑新军 A kind of new normal pressure heat-conducting oil furnace
CN107151965A (en) * 2017-07-18 2017-09-12 河南路诚机电制造有限公司 A kind of moveable electrical heating tank of energy-conserving and environment-protective and its heating means

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Application publication date: 20121212