CN114045176A - Novel coke oven gas riser waste heat recovery system - Google Patents
Novel coke oven gas riser waste heat recovery system Download PDFInfo
- Publication number
- CN114045176A CN114045176A CN202111476525.9A CN202111476525A CN114045176A CN 114045176 A CN114045176 A CN 114045176A CN 202111476525 A CN202111476525 A CN 202111476525A CN 114045176 A CN114045176 A CN 114045176A
- Authority
- CN
- China
- Prior art keywords
- heat
- liquid metal
- pipe
- coke oven
- heat exchange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/06—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sustainable Energy (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a novel coke oven gas riser waste heat recovery system which comprises a high-pressure gas cylinder and a desalting water tank, wherein the high-pressure gas cylinder is connected with a liquid metal storage tank, the liquid metal storage tank is connected with a heat pipe heat exchanger, the heat pipe heat exchanger is connected with a steam generator, the steam generator is connected with an electromagnetic pump and a heat accumulator, the electromagnetic pump is connected with the heat pipe heat exchanger, the desalting water tank is connected with a water feeding pump, and the water feeding pump is connected with the steam generator. According to the invention, a heat exchange medium in the heat pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump.
Description
Technical Field
The invention relates to the technical field of coking devices, in particular to a novel coke oven gas riser waste heat recovery system.
Background
China is the first major country for coke production and consumption in the world, the coke productivity is as high as 7 hundred million tons, and the coking is a high-energy-consumption and high-emission industry, so that the pressure of energy conservation and emission reduction is great. Crude gas and gaseous chemical products at 650-750 ℃ are discharged from the riser in the form of energy flow with heat energy and chemical energy, and the part of heat accounts for about 36 percent of the total output heat of the coke oven. Under the background of the gradual implementation of the current 'double-carbon' policy, the coke oven ascension pipe raw gas waste heat is recycled, and the coke oven ascension pipe raw gas waste heat recycling method has great economic benefits and significance of energy saving and carbon reduction.
Compared with red coke and flue waste gas produced by a coke oven, the working conditions of crude gas of the ascending pipe are complex and changeable, other heat recovery companies are researched and developed for more than ten years, and various iron and steel and coking enterprises develop research and industrial practice of waste heat recovery technologies such as heat conduction oil, water sleeve pipes, heat pipes, boilers and semiconductor thermoelectric power generation in sequence, but because the temperature and flow of the crude gas in the ascending pipe change greatly, some problems still exist more or less: the heat exchange efficiency is low, the surface of the heat exchange device is easy to condense and block, the heat exchange device has large bearing pressure and is easy to deform, and water leakage enters the carbonization chamber to influence the furnace body, normal operation and the like.
Disclosure of Invention
The invention aims to provide a novel waste heat recovery system of a coke oven gas riser, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel coke oven gas tedge waste heat recovery system, includes high-pressure gas cylinder and demineralized water tank, high-pressure gas cylinder is connected with the liquid metal storage tank, the liquid metal storage tank is connected with the heat pipe heat exchanger, the heat pipe heat exchanger is connected with steam generator, steam generator is connected with electromagnetic pump and heat accumulator, the electromagnetic pump is connected with the heat pipe heat exchanger, the demineralized water tank is connected with the feed pump, the feed pump is connected with steam generator.
Preferably, the heat pipe heat exchanger is a tube bundle formed by combining a plurality of parallel heat exchange tubes.
Preferably, the pipe wall of the heat exchange pipe is provided with a hollow layer, the heat exchange pipe is coiled inside the heat exchange pipe, a liquid inlet and a liquid outlet are formed in two ends of the heat exchange pipe, and raw coke oven gas flows through the middle of the heat exchange pipe from bottom to top.
Preferably, both ends of the heat exchange tube are provided with connecting flanges.
Preferably, the inner wall of the heat pipe is provided with inner grooves at equal intervals.
Preferably, the shape of the inner groove is set to be rectangular, trapezoidal, circular arc or triangular.
Preferably, the shape of the inner groove is a circular arc.
Preferably, the outer wall of the heat pipe is provided with outer bulges at equal intervals.
Preferably, the shape of the outer protrusion is set to be rectangular, trapezoidal, circular arc or triangular.
Preferably, the shape of the outer protrusion is triangular.
Compared with the prior art, the invention has the beneficial effects that: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and the intermediate system maintenance; the heat pipe exchanger is a pipe bundle formed by combining a plurality of parallel heat exchange pipes; the pipe wall of each heat exchange pipe is of a hollow structure, the heat pipes are coiled inside the heat exchange pipes, the heat exchange medium in each heat exchange pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump; the steam generator is a specially designed steam generating device, and can change heat carried by liquid metal from the riser into demineralized water, thereby generating steam, and the steam can be used in a steam pipe network in a plant area and also can be used for waste heat power generation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a heat pipe heat exchanger according to the present invention;
FIG. 3 is a schematic structural diagram of a heat pipe according to the present invention.
In the figure: 1. a high pressure gas cylinder; 2. a liquid metal storage tank; 3. an electromagnetic pump; 4. a heat pipe heat exchanger; 5. a steam generator; 6. a feed pump; 7. a demineralized water tank; 8. a heat accumulator; 401. a liquid inlet; 402. a connecting flange; 403. a heat exchange pipe; 404. a hollow layer; 405. a heat pipe; 406. a liquid outlet; 4051. an outer protrusion; 4052. an inner groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example one
Referring to fig. 1, in the embodiment of the present invention, a novel coke oven gas riser waste heat recovery system includes a high pressure gas cylinder 1 and a demineralized water tank 7, the high pressure gas cylinder 1 is connected to a liquid metal storage tank 2, the liquid metal storage tank 2 is connected to a heat pipe heat exchanger 4, the heat pipe heat exchanger 4 is connected to a steam generator 5, the steam generator 5 is connected to an electromagnetic pump 3 and a heat accumulator 8, the electromagnetic pump 3 is connected to the heat pipe heat exchanger 4, the demineralized water tank 7 is connected to a water feed pump 6, and the water feed pump 6 is connected to the steam generator 5; the liquid metal is an alloy material prepared from multiple metal materials with lower melting points, such as gallium, indium, tin and the like, can be kept in a liquid state at 2000 ℃, and has higher high thermal conductivity and fluidity than water, so that the heat exchange efficiency is higher, and the liquid metal is a carrier with higher energy transfer efficiency than water.
The working principle of the invention is as follows: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and during intermediate system maintenance.
Example two
Referring to fig. 1-2, in the embodiment of the present invention, a novel coke oven gas riser waste heat recovery system includes a high pressure gas cylinder 1 and a desalting water tank 7, the high pressure gas cylinder 1 is connected to a liquid metal storage tank 2, the liquid metal storage tank 2 is connected to a heat pipe heat exchanger 4, the heat pipe heat exchanger 4 is connected to a steam generator 5, the steam generator 5 is connected to an electromagnetic pump 3 and a heat accumulator 8, the electromagnetic pump 3 is connected to the heat pipe heat exchanger 4, the desalting water tank 7 is connected to a water feed pump 6, and the water feed pump 6 is connected to the steam generator 5; the heat pipe exchanger 4 is a tube bundle formed by combining a plurality of parallel heat exchange pipes 403; a hollow layer 404 is arranged on the tube wall of the heat exchange tube 403, a heat tube 405 is coiled inside the heat exchange tube 403, a liquid inlet 401 and a liquid outlet 406 are arranged at two ends of the heat tube 405, and raw coal gas flows through the middle of the heat exchange tube 403 from bottom to top; both ends of the heat exchange tube 403 are provided with connecting flanges 402; the liquid metal is an alloy material prepared from multiple metal materials with lower melting points, such as gallium, indium, tin and the like, can be kept in a liquid state at 2000 ℃, and has higher high thermal conductivity and fluidity than water, so that the heat exchange efficiency is higher, and the liquid metal is a carrier with higher energy transfer efficiency than water.
The working principle of the invention is as follows: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and the intermediate system maintenance; the heat pipe heat exchanger is a pipe bundle formed by combining a plurality of parallel heat exchange pipes; the pipe wall of each heat exchange pipe is of a hollow structure, the heat pipes are coiled inside the heat exchange pipes, the heat exchange medium in each heat exchange pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump; the steam generator is a specially designed steam generating device, and can change heat carried by liquid metal from the ascending pipe to demineralized water, so that steam is generated, the steam can be used in a steam pipe network in a plant area, and waste heat power generation can be performed.
EXAMPLE III
Referring to fig. 1-3, in the embodiment of the present invention, a novel coke oven gas riser waste heat recovery system includes a high pressure gas cylinder 1 and a desalting water tank 7, the high pressure gas cylinder 1 is connected to a liquid metal storage tank 2, the liquid metal storage tank 2 is connected to a heat pipe heat exchanger 4, the heat pipe heat exchanger 4 is connected to a steam generator 5, the steam generator 5 is connected to an electromagnetic pump 3 and a heat accumulator 8, the electromagnetic pump 3 is connected to the heat pipe heat exchanger 4, the desalting water tank 7 is connected to a water feed pump 6, and the water feed pump 6 is connected to the steam generator 5; the heat pipe exchanger 4 is a tube bundle formed by combining a plurality of parallel heat exchange pipes 403; a hollow layer 404 is arranged on the tube wall of the heat exchange tube 403, a heat tube 405 is coiled inside the heat exchange tube 403, a liquid inlet 401 and a liquid outlet 406 are arranged at two ends of the heat tube 405, and raw coal gas flows through the middle of the heat exchange tube 403 from bottom to top; both ends of the heat exchange tube 403 are provided with connecting flanges 402; inner grooves 4052 are formed in the inner wall of the heat pipe 405 at equal intervals; the shape of the inner groove 4052 is set to be rectangular, trapezoidal, circular arc or triangular; the shape of the inner groove 4052 is circular arc; the liquid metal is an alloy material prepared from multiple metal materials with lower melting points, such as gallium, indium, tin and the like, can be kept in a liquid state at 2000 ℃, and has higher high thermal conductivity and fluidity than water, so that the heat exchange efficiency is higher, and the liquid metal is a carrier with higher energy transfer efficiency than water.
The working principle of the invention is as follows: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and the intermediate system maintenance; the heat pipe heat exchanger is a pipe bundle formed by combining a plurality of parallel heat exchange pipes; the pipe wall of each heat exchange pipe is of a hollow structure, the heat pipes are coiled inside the heat exchange pipes, the heat exchange medium in each heat exchange pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump; the steam generator is a specially designed steam generating device, and can change heat carried by liquid metal from the ascending pipe to demineralized water, so that steam is generated, the steam can be used in a steam pipe network in a plant area, and waste heat power generation can be performed.
Example four
Referring to fig. 1-3, in the embodiment of the present invention, a novel coke oven gas riser waste heat recovery system includes a high pressure gas cylinder 1 and a desalting water tank 7, the high pressure gas cylinder 1 is connected to a liquid metal storage tank 2, the liquid metal storage tank 2 is connected to a heat pipe heat exchanger 4, the heat pipe heat exchanger 4 is connected to a steam generator 5, the steam generator 5 is connected to an electromagnetic pump 3 and a heat accumulator 8, the electromagnetic pump 3 is connected to the heat pipe heat exchanger 4, the desalting water tank 7 is connected to a water feed pump 6, and the water feed pump 6 is connected to the steam generator 5; the heat pipe exchanger 4 is a tube bundle formed by combining a plurality of parallel heat exchange pipes 403; a hollow layer 404 is arranged on the tube wall of the heat exchange tube 403, a heat tube 405 is coiled inside the heat exchange tube 403, a liquid inlet 401 and a liquid outlet 406 are arranged at two ends of the heat tube 405, and raw coal gas flows through the middle of the heat exchange tube 403 from bottom to top; both ends of the heat exchange tube 403 are provided with connecting flanges 402; outer protrusions 4051 are arranged on the outer wall of the heat pipe 405 at equal intervals; the shape of the outer protrusion 4051 is set to be rectangular, trapezoidal, circular arc or triangular, and the shape of the outer protrusion 4051 is set to be triangular; the liquid metal is an alloy material prepared from multiple metal materials with lower melting points, such as gallium, indium, tin and the like, can be kept in a liquid state at 2000 ℃, and has higher high thermal conductivity and fluidity than water, so that the heat exchange efficiency is higher, and the liquid metal is a carrier with higher energy transfer efficiency than water.
The working principle of the invention is as follows: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and the intermediate system maintenance; the heat pipe heat exchanger is a pipe bundle formed by combining a plurality of parallel heat exchange pipes; the pipe wall of each heat exchange pipe is of a hollow structure, the heat pipes are coiled inside the heat exchange pipes, the heat exchange medium in each heat exchange pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump; the steam generator is a specially designed steam generating device, and can change heat carried by liquid metal from the ascending pipe to demineralized water, so that steam is generated, the steam can be used in a steam pipe network in a plant area, and waste heat power generation can be performed.
EXAMPLE five
Referring to fig. 1-3, in the embodiment of the present invention, a novel coke oven gas riser waste heat recovery system includes a high pressure gas cylinder 1 and a desalting water tank 7, the high pressure gas cylinder 1 is connected to a liquid metal storage tank 2, the liquid metal storage tank 2 is connected to a heat pipe heat exchanger 4, the heat pipe heat exchanger 4 is connected to a steam generator 5, the steam generator 5 is connected to an electromagnetic pump 3 and a heat accumulator 8, the electromagnetic pump 3 is connected to the heat pipe heat exchanger 4, the desalting water tank 7 is connected to a water feed pump 6, and the water feed pump 6 is connected to the steam generator 5; the heat pipe exchanger 4 is a tube bundle formed by combining a plurality of parallel heat exchange pipes 403; a hollow layer 404 is arranged on the tube wall of the heat exchange tube 403, a heat tube 405 is coiled inside the heat exchange tube 403, a liquid inlet 401 and a liquid outlet 406 are arranged at two ends of the heat tube 405, and raw coal gas flows through the middle of the heat exchange tube 403 from bottom to top; both ends of the heat exchange tube 403 are provided with connecting flanges 402; inner grooves 4052 are formed in the inner wall of the heat pipe 405 at equal intervals; outer protrusions 4051 are arranged on the outer wall of the heat pipe 405 at equal intervals; the liquid metal is an alloy material prepared from multiple metal materials with lower melting points, such as gallium, indium, tin and the like, can be kept in a liquid state at 2000 ℃, and has higher high thermal conductivity and fluidity than water, so that the heat exchange efficiency is higher, and the liquid metal is a carrier with higher energy transfer efficiency than water.
The working principle of the invention is as follows: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and the intermediate system maintenance; the heat pipe heat exchanger is a pipe bundle formed by combining a plurality of parallel heat exchange pipes; the pipe wall of each heat exchange pipe is of a hollow structure, the heat pipes are coiled inside the heat exchange pipes, the heat exchange medium in each heat exchange pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump; the steam generator is a specially designed steam generating device, and can change heat carried by liquid metal from the ascending pipe to demineralized water, so that steam is generated, the steam can be used in a steam pipe network in a plant area, and waste heat power generation can be performed.
EXAMPLE six
Referring to fig. 1-3, in the embodiment of the present invention, a novel coke oven gas riser waste heat recovery system includes a high pressure gas cylinder 1 and a desalting water tank 7, the high pressure gas cylinder 1 is connected to a liquid metal storage tank 2, the liquid metal storage tank 2 is connected to a heat pipe heat exchanger 4, the heat pipe heat exchanger 4 is connected to a steam generator 5, the steam generator 5 is connected to an electromagnetic pump 3 and a heat accumulator 8, the electromagnetic pump 3 is connected to the heat pipe heat exchanger 4, the desalting water tank 7 is connected to a water feed pump 6, and the water feed pump 6 is connected to the steam generator 5; the heat pipe exchanger 4 is a tube bundle formed by combining a plurality of parallel heat exchange pipes 403; a hollow layer 404 is arranged on the tube wall of the heat exchange tube 403, a heat tube 405 is coiled inside the heat exchange tube 403, a liquid inlet 401 and a liquid outlet 406 are arranged at two ends of the heat tube 405, and raw coal gas flows through the middle of the heat exchange tube 403 from bottom to top; both ends of the heat exchange tube 403 are provided with connecting flanges 402; inner grooves 4052 are formed in the inner wall of the heat pipe 405 at equal intervals; the shape of the inner groove 4052 is set to be rectangular, trapezoidal, circular arc or triangular; the shape of the inner groove 4052 is circular arc; outer protrusions 4051 are arranged on the outer wall of the heat pipe 405 at equal intervals; the shape of the outer protrusion 4051 is set to be rectangular, trapezoidal, circular arc or triangular, and the shape of the outer protrusion 4051 is set to be triangular; the liquid metal is an alloy material prepared from multiple metal materials with lower melting points, such as gallium, indium, tin and the like, can be kept in a liquid state at 2000 ℃, and has higher high thermal conductivity and fluidity than water, so that the heat exchange efficiency is higher, and the liquid metal is a carrier with higher energy transfer efficiency than water.
The working principle of the invention is as follows: liquid metal flows in from the bottom of the heat pipe heat exchanger, flows from bottom to top, absorbs the heat of the raw coke oven gas in the ascending pipe, and flows out from the upper part to enter the steam generator; the demineralized water enters a steam generator through a water feeding pump, high-temperature liquid metal in the steam generator exchanges heat with the demineralized water to produce steam, and the steam enters a heat accumulator to be stored and stabilized and then is output to be directly used or drive a steam turbine to generate electricity; the cooled liquid metal enters the heat pipe exchanger from the bottom through the recirculation of the electromagnetic pump; the liquid metal storage tank is used for storing liquid metal and is only used during the primary liquid metal injection system and the intermediate system maintenance; the heat pipe heat exchanger is a pipe bundle formed by combining a plurality of parallel heat exchange pipes; the pipe wall of each heat exchange pipe is of a hollow structure, the heat pipes are coiled inside the heat exchange pipes, the heat exchange medium in each heat exchange pipe is liquid metal, and the liquid metal spirally rises from bottom to top; raw gas flows through the heat pipes from bottom to top and does not contact with a heat exchange medium for heat exchange; the heat exchange medium and the coke oven are sealed twice, so that the leakage risk can be reduced; the electromagnetic pump is a specially designed liquid metal driving pump, has no mechanical moving part, simple structure, good sealing performance and reliable operation, and the liquid metal flows along a certain direction under the action of the electromagnetic force of the electromagnetic pump; the steam generator is a specially designed steam generating device, and can change heat carried by liquid metal from the ascending pipe to demineralized water, so that steam is generated, the steam can be used in a steam pipe network in a plant area, and waste heat power generation can be performed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a novel coke oven gas tedge waste heat recovery system, includes high-pressure gas cylinder (1) and demineralized water tank (7), its characterized in that: the high-pressure gas cylinder (1) is connected with liquid metal storage tank (2), liquid metal storage tank (2) is connected with heat pipe heat exchanger (4), heat pipe heat exchanger (4) are connected with steam generator (5), steam generator (5) are connected with electromagnetic pump (3) and heat accumulator (8), electromagnetic pump (3) are connected with heat pipe heat exchanger (4), demineralized water tank (7) are connected with feed pump (6), feed pump (6) are connected with steam generator (5).
2. The novel coke oven gas riser waste heat recovery system of claim 1, wherein: the heat pipe heat exchanger (4) is a pipe bundle formed by combining a plurality of parallel heat exchange pipes (403).
3. The novel coke oven gas riser waste heat recovery system of claim 2, wherein: the pipe wall of heat exchange tube (403) is provided with hollow layer (404), the inside dish of heat exchange tube (403) has heat pipe (405), heat pipe (405) both ends are provided with inlet (401) and liquid outlet (406), the circulation has crude gas in heat exchange tube (403) middle part from bottom to top.
4. The novel coke oven gas riser waste heat recovery system of claim 3, wherein: and two ends of the heat exchange pipe (403) are provided with connecting flanges (402).
5. The novel coke oven gas riser waste heat recovery system of claim 2, wherein: inner grooves (4052) are formed in the inner wall of the heat pipe (405) at equal intervals.
6. The novel coke oven gas riser waste heat recovery system of claim 5, wherein: the shape of the inner groove (4052) is set to be rectangular, trapezoidal, circular arc or triangular.
7. The novel coke oven gas riser waste heat recovery system of claim 6, wherein: the shape of the inner groove (4052) is set to be circular arc.
8. The novel coke oven gas riser waste heat recovery system of claim 2, wherein: outer bulges (4051) are arranged on the outer wall of the heat pipe (405) at equal intervals.
9. The novel coke oven gas riser waste heat recovery system of claim 8, wherein: the shape of the outer protrusion (4051) is set to be rectangular, trapezoidal, circular arc or triangular.
10. The novel coke oven gas riser waste heat recovery system of claim 9, wherein: the shape of the outer protrusion (4051) is arranged to be triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111476525.9A CN114045176A (en) | 2021-12-06 | 2021-12-06 | Novel coke oven gas riser waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111476525.9A CN114045176A (en) | 2021-12-06 | 2021-12-06 | Novel coke oven gas riser waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114045176A true CN114045176A (en) | 2022-02-15 |
Family
ID=80212541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111476525.9A Pending CN114045176A (en) | 2021-12-06 | 2021-12-06 | Novel coke oven gas riser waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114045176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115307334A (en) * | 2022-08-08 | 2022-11-08 | 安徽工程大学 | Multi-heat-source heat pump air conditioning system and operation control method thereof |
-
2021
- 2021-12-06 CN CN202111476525.9A patent/CN114045176A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115307334A (en) * | 2022-08-08 | 2022-11-08 | 安徽工程大学 | Multi-heat-source heat pump air conditioning system and operation control method thereof |
| CN115307334B (en) * | 2022-08-08 | 2024-01-26 | 安徽工程大学 | Multi-heat source heat pump air conditioning system and operation control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102425954A (en) | Blast furnace slag and slag flushing water waste heat organic working medium supercritical generating system | |
| CN103953405A (en) | Waste heat power generation system utilizing organic Rankine cycle | |
| US12050007B2 (en) | Low-carbon energy utilization system for steam and power cogeneration of oil field | |
| CN216550271U (en) | Novel coke oven gas riser waste heat recovery system | |
| CN114045176A (en) | Novel coke oven gas riser waste heat recovery system | |
| CN203822398U (en) | Waste heat power generation system using organic Rankine cycle | |
| CN101539036A (en) | Device for generating power from flue gas waste heat of aluminum cells on the basis of organic Rankine cycle | |
| CN215256355U (en) | Low-carbon energy utilization system for oil field steam-electricity cogeneration | |
| CN102910602B (en) | Double-region device for efficiently recovering yellow phosphorus combustion heat | |
| CN202166051U (en) | Front closed circulating heat exchange system | |
| CN208671732U (en) | A kind of band fin coal oven dithio-gas heat recovering device | |
| CN116240036A (en) | Structure for reducing thermal stress at bottom of coil type rising pipe heat exchanger | |
| CN111336487A (en) | Coke oven raw gas and waste gas waste heat recycling system | |
| CN113091035B (en) | Oilfield steam injection boiler system for generating steam and hot water by coupling electric boiler | |
| CN115183476A (en) | Ultra-supercritical solar tower type water working medium heat absorber | |
| CN113214846A (en) | Coking raw gas waste heat recovery system | |
| CN201634448U (en) | Dissolved mineral slurry preheater by acid method | |
| CN105273767A (en) | Biomass pyrolysis gasification system with heat energy displacement function | |
| CN211078487U (en) | Calcium carbide furnace cooling waste heat power generation system | |
| CN107400523B (en) | Efficient heat conduction waste heat recovery system for coke oven ascending pipe | |
| CN211822292U (en) | Coke oven raw gas and waste gas waste heat recycling system | |
| CN210799058U (en) | Steam-water double-pressure waste heat power generation system | |
| CN209893646U (en) | Heating heat tracing energy storage system replacing electric conduction oil furnace | |
| CN202864923U (en) | Double-zone efficient device for recovering yellow phosphorus combustion heat energy | |
| CN206803773U (en) | A kind of new semicoke discharge cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |