CN206668239U - A kind of deep layer oil shale in-situ exploits eddy current heater - Google Patents

A kind of deep layer oil shale in-situ exploits eddy current heater Download PDF

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CN206668239U
CN206668239U CN201621317140.2U CN201621317140U CN206668239U CN 206668239 U CN206668239 U CN 206668239U CN 201621317140 U CN201621317140 U CN 201621317140U CN 206668239 U CN206668239 U CN 206668239U
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sealant
end cover
oil shale
fluid
temperature sensor
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孙友宏
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Jilin University
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Jilin University
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Abstract

The utility model discloses a kind of deep layer oil shale in-situ to exploit eddy current heater, including insulation shell, upper end cover, bottom end cover, outer ceramic layer, interior ceramic layer, high temperature resistant magnet exciting coil, heat-insulation layer, insulating sleeve, check valve, upper temperature sensor, lower temperature sensor and spiral winding type stainless steel tube；The utility model efficiency of heating surface is high, and operating cost is low, while reduces noise, occupation of land and the heat radiation of conventional surface flow body heating, and add the cooling of high temperature resistant magnet exciting coil, cooling fluid is fluid to be heated, realizes the secondary use of energy, extends the service life of heater；The kerogen pyrolysis generation shale oil and fuel gas of oil shale, fuel gas can be passed directly in active well after separation, realize and energy is recycled；This mode can increase the efficiency of heating surface of oil shale, reduce heating cost, and this method is pollution-free to underground water, and adaptability is stronger.

Description

A kind of deep layer oil shale in-situ exploits eddy current heater
Technical field
Technical field of oil shale on-site exploitation is the utility model is related to, is exploited more particularly to a kind of deep layer oil shale in-situ Eddy current heater.
Background technology
Oil shale is a kind of sedimentary rock containing organic matter, and the content of organic matter is usually 15%-50%, predominantly sapropel Matter, humus or mixed type, inorganic mineral is mainly comprising quartz, kaolin, clay, carbonate etc..Oil shale is done by high temperature Shale oil, shale gas and shale semicockes, also referred to as artificial petroleum can be obtained after evaporating.Oil-shale retorting is broadly divided into two Kind form, including ground retorting technique and underground retoring technology, although ground retorting technique technology is ripe, has and account for The shortcomings of ground area is big, utilization rate is low, seriously polluted and cost is high.And underground retoring technology need not carry out earth's surface exploitation, Directly subterranean oil shale is heated, there is good product quality, the advantages that floor space is small and tar productivity is high.At present, have in the world The method of more in-situ retortings, it is divided into three kinds of conduction heating, Convective Heating and radiant heating modes.
With regard to current Convective Heating method, Taiyuan science and engineering steam convective heating methods (Publication No. CN1676870A) pass through arrangement Group wells, group wells is connected using pressure break, high temperature hydrocarbon gas is injected in heat injection well oil shale layer is carried out to be thermally formed oil gas. Steam-heated mode is ground heating.
Xue Fulong companies and Los Alamos National Laboratories have developed jointly CRUSH technology (publication numbers in 2006 CN200780013312).The technology is by high temperature CO2As heat-conducting gas, oil shale layer is heated, by gas pressure with The change of stress changes the hole of oil shale, and this technology on ground by heating CO2Then pass to underground.First but the technology is used Water demand is big, and technical difficulty is big and has destruction to environment.
EGL technologies come heating oil shale layer, are divided into heating system and oil recovery mainly by convection current and recirculating heat transfer principle Two parts of system, heating system are the loop systems of a closing, the gas such as natural gas by injecting high temperature into system Opening device, once normal operation can utilize gas caused by oil shale pyrolysis to heat, realize that oneself is self-sustaining；Gas heating Mode is combustion heating.In addition, domestic many enterprises and colleges and universities are it is also proposed that similar patent, as CN103790563A propose it is a kind of The method that oil shale in-situ topochemistry method extracts shale oil gas, topochemistry is formed using hot mixing gas in oil shale layer Reaction zone, with the expansion of reaction zone, the autocatalytic cleavage of oil shale is realized, produces oil gas, and waste heat is carried out second Utilize, gas by being passed through in oil shale layer again after the combustion heating of ground；Patent CN103696747A proposes to utilize high temperature nitrogen Gas heating oil shale layer, then nitrogen is mixed by a certain percentage with caused flammable hydrocarbon gas and injected into well, with oil shale Chemically react, so as to further crack oil shale.The mode of heating of the technical gas is ground heating.
Above-mentioned mode of heating energy expenditure is big, and the mode of heating of gas is all ground heating, during underground is passed through Gas heat produces loss, causes cost of winning to increase, and efficiency reduces；Ground firing equipment floor space is big, and produces one Fixed noise and heat radiation, there is certain pollution to environment.Resistance wire in hot gas be present, add in traditional Electric heating The shortcomings of heat coil is short-circuit, heat loss is high, can have potential safety hazard when heating-up temperature is too high.
The content of the invention
The purpose of this utility model is that efficiency existing for existing oil shale recovery heater is low, cost is high, hot in order to solve The problems such as loss is high, pollution environment, and a kind of deep layer oil shale in-situ exploitation eddy current heater provided.
The utility model includes insulation shell, upper end cover, bottom end cover, outer ceramic layer, interior ceramic layer, high temperature resistant excitation wire Circle, heat-insulation layer, insulating sleeve, check valve, upper temperature sensor, lower temperature sensor and spiral winding type stainless steel tube；
Wherein insulation shell is cylindrical structural, the upper top of insulation shell and lower top be respectively arranged with sealant and Lower sealant, upper sealant, lower sealant and insulation shell composition seal cavity；The inside of insulation shell is disposed with insulation Layer, outer ceramic layer, high temperature resistant magnet exciting coil and interior ceramic layer.
Spiral winding type stainless steel tube is arranged in the cavity in interior ceramic layer.
The insulation that sealant and lower sealant 122 on several be perforated through can be provided with cavity in interior ceramic layer is led Hot fluid pipeline, two ports of insulating heat-conductive fluid line are provided with buckle, to increase seal.
Described spiral winding type stainless steel tube can be perforated through sealant, be formed in the upper surface of upper sealant several Steel pipe entrance.
Insulating sleeve is set in the cavity that spiral winding type stainless steel tube is formed.
Upper end cover and bottom end cover are separately positioned on the top and bottom of housing, and fluid intake, lower end are offered on upper end cover Lid offers fluid issuing.
Two wiring holes are offered on upper end cover；Binding post is equipped with respectively on upper sealant and lower sealant；Lower sealing Temperature sensor bracket is provided with layer, lower temperature sensor is arranged on temperature sensor bracket.
Fluid issuing is internally provided with check valve.
Described upper end cover and bottom end cover is spirally connected with insulation shell respectively.
High temperature resistant magnet exciting coil is connected by binding post with the wire through wiring hole.
The course of work and principle of the present utility model are：
High temperature resistant magnet exciting coil produces alternating magnetic field, and spiral winding type stainless steel tube produces heat under magnetic fields, with Heat transfer gives the fluid by eddy current heater afterwards, realizes the heating of convection body.
Eddy current heater is put into underground, the fluid of normal temperature is passed through into eddy current heater, fluid directly enters after being heated Enter in oil shale layer and oil shale is pyrolyzed.
When fluid is using conductor fluid, eddy current heater in the cavity in interior ceramic layer using being provided with The structure of several insulating heat-conductive fluid lines for being perforated through sealant and lower sealant.Conductor fluid is entered by fluid intake Insulating heat-conductive fluid line, after energization, high temperature resistant magnet exciting coil produces alternating magnetic field, and spiral winding type stainless steel tube is made in magnetic field With lower generation heat, subsequent heat transfer gives the conductor fluid by insulating heat-conductive fluid line, the conductor fluid after being heated It is directly entered by fluid issuing in oil shale layer and oil shale is pyrolyzed.
When fluid is using non-conductive fluid, eddy current heater is perforated through using spiral winding type stainless steel tube Upper sealant, the structure of several steel pipe entrances is formed in the upper surface of upper sealant.Non-conductive fluid by binding post with it is upper close Space between sealing enters between outer ceramic layer and interior ceramic layer i.e. around high temperature resistant magnet exciting coil, while non-conductive fluid Enter spiral winding type stainless steel tube also by steel pipe entrance.After energization, high temperature resistant magnet exciting coil produces alternating magnetic field, and screw thread twines Wound stainless steel tube produces heat under magnetic fields, and subsequent heat transfer is passed through non-conductive fluid, not leading after being heated Electrofluid is directly entered in oil shale layer by fluid issuing and oil shale is pyrolyzed.
Described upper temperature sensor and lower temperature sensor are used for testing heater fluid inlet temperature and outlet temperature； The terminals of upper temperature sensor and lower temperature sensor are connected with PLC, be less than when inlet temperature and outlet temperature or Person higher than setting maximum temperature when, PLC reception signal by control high frequency electric source main frame break-make and frequency it is big It is small to realize the control of convection current temperature.Wherein high temperature resistant magnet exciting coil, upper temperature sensor and lower temperature sensor pass through whirlpool The wiring hole that the left and right sides of stream heater is different is connected with the high frequency electric source and measurement and control line on ground respectively, prevents resistance to height Warm magnet exciting coil interferes with upper temperature sensor and lower temperature sensor.
Described check valve is located at the outlet of heater, ensure that the one-way flow of fluid, prevents fluid reflux.
For heating conductor fluid, fluid is cooled down by insulating heat-conductive fluid line to high temperature resistant magnet exciting coil, is protected Demonstrate,prove the insulating properties of heating system；For heating nonconducting fluid, fluid is by directly contacting high temperature resistant magnet exciting coil to resistance to height Warm magnet exciting coil is cooled down.
The beneficial effects of the utility model：Compared with traditional earth's surface heating fluid, the utility model efficiency of heating surface is high, fortune Row cost is low, and adds the cooling of high temperature resistant magnet exciting coil, and cooling fluid is fluid to be heated, realizes the secondary of energy Utilize, extend the service life of heater.
Compared with prior art, the utility model is realized to normal temperature fluid (including nitrogen, air, hydrocarbon using eddy current effect Class gas, carbon dioxide, water etc.) underground heating, the fluid of heating directly heats oil shale layer, reduces the heat loss of fluid, Noise, occupation of land and the heat radiation of conventional surface flow body heating are reduced simultaneously, and the kerogen pyrolysis of oil shale generate shale oil and can Combustion gas body, fuel gas can be passed directly in active well after separation, realize and energy is recycled.This mode The efficiency of heating surface of oil shale can be increased, reduce heating cost, and this method is pollution-free to underground water, adaptability is stronger.
Brief description of the drawings
Fig. 1 is that the heater sectional view that fluid is conductor fluid is heated in the utility model embodiment.
Fig. 2 is that the heater sectional view that fluid is non-conductive fluid is heated in the utility model embodiment.
Fig. 3 is the A-A of Fig. 1 in the utility model embodiment to sectional view.
Fig. 4 is the B-B direction sectional view of Fig. 2 in the utility model embodiment.
Fig. 5 is the oil shale in-situ Vertical Well mining principle figure of the utility model embodiment.
Fig. 6 is the partial sectional view of spiral winding type stainless steel tube in the utility model embodiment.
Embodiment
Refer to shown in Fig. 1, Fig. 3, Fig. 5 and Fig. 6, be first embodiment of the present utility model, the present embodiment includes insulation Housing 12, upper end cover 25, bottom end cover 27, outer ceramic layer 131, interior ceramic layer 132, high temperature resistant magnet exciting coil 14, heat-insulation layer 15, absolutely Edge sleeve pipe 18, check valve 19, upper temperature sensor 201, lower temperature sensor 202 and spiral winding type stainless steel tube 22；
Wherein insulation shell 12 is cylindrical structural, and the upper top of insulation shell 12 and lower top are respectively arranged with sealing Layer 121 and lower sealant 122, upper sealant 121, lower sealant 122 and insulation shell 12 form seal cavity；Insulation shell 12 Inside be disposed with heat-insulation layer 15, outer ceramic layer 131, high temperature resistant magnet exciting coil 14 and interior ceramic layer 132.
Spiral winding type stainless steel tube 22 is arranged in the cavity in interior ceramic layer 132.
Sealant 121 and lower sealant 122 on several be perforated through can be provided with cavity in interior ceramic layer 132 Insulating heat-conductive fluid line 17, two ports of insulating heat-conductive fluid line 17 are provided with buckle, to increase seal.
Insulating sleeve 18 is set in the cavity that spiral winding type stainless steel tube 22 is formed.
Upper end cover 25 and bottom end cover 27 are separately positioned on the top and bottom of housing 12, and offering fluid on upper end cover 25 enters Mouth 251, bottom end cover 27 offers fluid issuing 271.
Two wiring holes 23 are offered on upper end cover 25；Wiring is equipped with respectively on upper sealant 121 and lower sealant 122 Post 16；Temperature sensor bracket 21 is provided with lower sealant 122, lower temperature sensor 202 is arranged on temperature sensor bracket On 21.
Fluid issuing 271 is internally provided with check valve 19.
Described upper end cover 25 and bottom end cover 27 is spirally connected with insulation shell 12 respectively.
High temperature resistant magnet exciting coil 14 is connected by binding post 16 with the wire through wiring hole 23.
The course of work and principle of the present embodiment be：When fluid is using conductor fluid, what eddy current heater used It is that the insulating heat-conductive stream of sealant 121 and lower sealant 122 on several be perforated through is provided with the cavity in interior ceramic layer 132 The structure of body pipeline 17.Conductor fluid enters insulating heat-conductive fluid line 17 by fluid intake 251, and after energization, high temperature resistant is encouraged Magnetic coil 14 produces alternating magnetic field, and spiral winding type stainless steel tube 22 produces heat under magnetic fields, and subsequent heat transfer is given By the conductor fluid of insulating heat-conductive fluid line 17, the conductor fluid after being heated is directly entered oil by fluid issuing 271 Oil shale is pyrolyzed in rammell.
Described upper temperature sensor 201 and lower temperature sensor 202 are used for testing heater fluid inlet temperature and gone out Mouth temperature；The terminals of upper temperature sensor 201 and lower temperature sensor 202 are connected with PLC, when inlet temperature and are gone out When mouth temperature is below or above the maximum temperature set, PLC reception signal is by controlling the logical of high frequency electric source main frame Break with the size of frequency to realize the control of convection current temperature.Wherein high temperature resistant magnet exciting coil 14, upper temperature sensor 201 and under Temperature sensor 202 is surveyed by high frequency electric source and data of the different wiring hole in the left and right sides of eddy current heater respectively with ground Control line is connected, and prevents high temperature resistant magnet exciting coil 14 from being interfered with upper temperature sensor 201 and lower temperature sensor 202.
Described check valve is located at the outlet of heater, ensure that the one-way flow of fluid, prevents fluid reflux.
For heating conductor fluid, fluid is cooled down by insulating heat-conductive fluid line to high temperature resistant magnet exciting coil, is protected Demonstrate,prove the insulating properties of heating system.
Refer to shown in Fig. 2, Fig. 4, Fig. 5 and Fig. 6, be second embodiment of the present utility model, the present embodiment includes insulation Housing 12, upper end cover 25, bottom end cover 27, outer ceramic layer 131, interior ceramic layer 132, high temperature resistant magnet exciting coil 14, heat-insulation layer 15, absolutely Edge sleeve pipe 18, check valve 19, upper temperature sensor 201, lower temperature sensor 202 and spiral winding type stainless steel tube 22；
Wherein insulation shell 12 is cylindrical structural, and the upper top of insulation shell 12 and lower top are respectively arranged with sealing Layer 121 and lower sealant 122, upper sealant 121, lower sealant 122 and insulation shell 12 form seal cavity；Insulation shell 12 Inside be disposed with heat-insulation layer 15, outer ceramic layer 131, high temperature resistant magnet exciting coil 14 and interior ceramic layer 132.
Spiral winding type stainless steel tube 22 is arranged in the cavity in interior ceramic layer 132.
Described spiral winding type stainless steel tube 22 is perforated through sealant 121, is formed in the upper surface of upper sealant 121 Several steel pipe entrances.
Insulating sleeve 18 is set in the cavity that spiral winding type stainless steel tube 22 is formed.
Upper end cover 25 and bottom end cover 27 are separately positioned on the top and bottom of housing 12, and offering fluid on upper end cover 25 enters Mouth 251, bottom end cover 27 offers fluid issuing 271.
Two wiring holes 23 are offered on upper end cover 25；Wiring is equipped with respectively on upper sealant 121 and lower sealant 122 Post 16；Temperature sensor bracket 21 is provided with lower sealant 122, lower temperature sensor 202 is arranged on temperature sensor bracket On 21.
Fluid issuing 271 is internally provided with check valve 19.
Described upper end cover 25 and bottom end cover 27 is spirally connected with insulation shell 12 respectively.
High temperature resistant magnet exciting coil 14 is connected by binding post 16 with the wire through wiring hole 23.
When fluid is using non-conductive fluid, eddy current heater penetrates using spiral winding type stainless steel tube 22 Sealant 121 is crossed, the structure of several steel pipe entrances is formed in the upper surface of upper sealant 121.Non-conductive fluid passes through wiring It is high temperature resistant magnet exciting coil 14 that space between post 16 and upper sealant 121, which enters between outer ceramic layer 131 and interior ceramic layer 132, Around, while non-conductive fluid enters spiral winding type stainless steel tube 22 also by steel pipe entrance.After energization, high temperature resistant excitation Coil 14 produces alternating magnetic field, and spiral winding type stainless steel tube 22 produces heat under magnetic fields, and subsequent heat transfer is to logical Non-conductive fluid is crossed, the non-conductive fluid after being heated is directly entered in oil shale layer to enter oil shale by fluid issuing 271 Row pyrolysis.
Described upper temperature sensor 201 and lower temperature sensor 202 are used for testing heater fluid inlet temperature and gone out Mouth temperature；The terminals of upper temperature sensor 201 and lower temperature sensor 202 are connected with PLC, when inlet temperature and are gone out When mouth temperature is below or above the maximum temperature set, PLC reception signal is by controlling the logical of high frequency electric source main frame Break with the size of frequency to realize the control of convection current temperature.Wherein high temperature resistant magnet exciting coil 14, upper temperature sensor 201 and under Temperature sensor 202 is surveyed by high frequency electric source and data of the different wiring hole in the left and right sides of eddy current heater respectively with ground Control line is connected, and prevents high temperature resistant magnet exciting coil 14 from being interfered with upper temperature sensor 201 and lower temperature sensor 202.
Described check valve is located at the outlet of heater, ensure that the one-way flow of fluid, prevents fluid reflux.
For heating nonconducting fluid, fluid is entered by directly contacting high temperature resistant magnet exciting coil to high temperature resistant magnet exciting coil Row cooling.

Claims (4)

1. a kind of deep layer oil shale in-situ exploits eddy current heater, it is characterised in that：Including insulation shell (12), upper end cover (25), bottom end cover (27), outer ceramic layer (131), interior ceramic layer (132), high temperature resistant magnet exciting coil (14), heat-insulation layer (15), absolutely Edge sleeve pipe (18), check valve (19), upper temperature sensor (201), lower temperature sensor (202) and spiral winding type stainless steel tube (22)；
Wherein insulation shell (12) is cylindrical structural, and the upper top of insulation shell (12) and lower top are respectively arranged with sealing Layer (121) and lower sealant (122), upper sealant (121), lower sealant (122) and insulation shell (12) composition seal cavity； The inside of insulation shell (12) is disposed with heat-insulation layer (15), outer ceramic layer (131), high temperature resistant magnet exciting coil (14) and interior pottery Enamel coating (132)；
Spiral winding type stainless steel tube (22) is arranged in the cavity in interior ceramic layer (132)；
Insulating sleeve (18) is set in the cavity that spiral winding type stainless steel tube (22) is formed；
Upper end cover (25) and bottom end cover (27) are separately positioned on the top and bottom of housing (12), and upper end cover offers stream on (25) Body entrance (251), bottom end cover (27) offer fluid issuing (271)；
Two wiring holes (23) are offered on upper end cover (25)；It is equipped with respectively on upper sealant (121) and lower sealant (122) Binding post (16)；Temperature sensor bracket (21) is provided with lower sealant (122), lower temperature sensor (202) is arranged on temperature Spend on sensor stand (21)；
Fluid issuing (271) is internally provided with check valve (19)；
High temperature resistant magnet exciting coil (14) is connected by binding post (16) with the wire through wiring hole (23).
A kind of 2. deep layer oil shale in-situ exploitation eddy current heater according to claim 1, it is characterised in that：It is ceramic inside Several insulating heat-conductive fluid hoses for being perforated through sealant (121) and lower sealant (122) are provided with cavity in layer (132) Road (17), two ports of insulating heat-conductive fluid line (17) are provided with buckle (171).
A kind of 3. deep layer oil shale in-situ exploitation eddy current heater according to claim 1, it is characterised in that：Described spiral shell Line wound form stainless steel tube (22) is perforated through sealant (121), and forming several steel pipes in the upper surface of upper sealant (121) enters Mouthful.
A kind of 4. deep layer oil shale in-situ exploitation eddy current heater according to claim 1, it is characterised in that：Described is upper End cap (25) and bottom end cover (27) are spirally connected with insulation shell (12) respectively.
CN201621317140.2U 2016-12-03 2016-12-03 A kind of deep layer oil shale in-situ exploits eddy current heater Active CN206668239U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621317140.2U CN206668239U (en) 2016-12-03 2016-12-03 A kind of deep layer oil shale in-situ exploits eddy current heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621317140.2U CN206668239U (en) 2016-12-03 2016-12-03 A kind of deep layer oil shale in-situ exploits eddy current heater

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CN206668239U true CN206668239U (en) 2017-11-24

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