CN114483239B - Comprehensive utilization method of mine ventilation energy - Google Patents
Comprehensive utilization method of mine ventilation energy Download PDFInfo
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- CN114483239B CN114483239B CN202210119763.2A CN202210119763A CN114483239B CN 114483239 B CN114483239 B CN 114483239B CN 202210119763 A CN202210119763 A CN 202210119763A CN 114483239 B CN114483239 B CN 114483239B
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- ventilation air
- air methane
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- energy
- speed
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- 238000009423 ventilation Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 146
- 238000009792 diffusion process Methods 0.000 claims abstract description 10
- 238000010248 power generation Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002826 coolant Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 5
- 235000011089 carbon dioxide Nutrition 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 11
- 238000000605 extraction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the technical field of energy recycling, and provides a comprehensive utilization method of mine ventilation energy. The method comprises the following steps: draining the exhausted ventilation air methane, and reducing the wind speed of the ventilation air methane through a diffusion device; one part of the ventilation air methane after the speed reduction is collected through a current collecting device, the wind speed is adjusted again to meet the rated parameter requirement of the wind driven generator, and the other part of the ventilation air methane is adjusted again through a current guiding device; the ventilation air methane collected by the flow collecting device drives fan blades of the wind driven generator to rotate so as to generate wind power; the ventilation air methane generated by wind power generation is converged with the ventilation air methane generated by the drainage device after the wind speed is regulated and is converged into the heat exchange pipeline; and extracting heat energy in the ventilation air methane through the heat exchanger after the ventilation air methane is converged. The invention has the beneficial effects that: the method not only can utilize a part of kinetic energy contained in the ventilation air methane, but also can extract a large amount of heat energy in the ventilation air methane, thereby being economical and practical, and saving energy and reducing emission.
Description
Technical Field
The invention relates to the technical field of energy recycling, in particular to a comprehensive utilization method of mine ventilation energy.
Background
In order to effectively utilize the energy in the ventilation air methane and improve the utilization efficiency of the energy of the ventilation air methane, most of domestic expert students always develop a ventilation air methane waste heat utilization device, and a few of experts research the extraction of the kinetic energy in the ventilation air methane. The ventilation air methane utilization technology in the development process can be generally divided into three types: a surface enthalpy heat taking technology, a light enthalpy heat taking technology and a direct cooling type ventilation air heat pump technology. The devices corresponding to the first two types of technologies are mainly spray type heat-taking devices, and the devices corresponding to the last type of technologies are mainly direct-cooling type deep enthalpy heat-taking ventilation air heat pump devices. Only one technology is used for utilizing the ventilation air energy in the research process, namely, the wind power generation technology is adopted, the ventilation air is stabilized to drive the fan blades of the wind driven generator to rotate, and then the magnetic induction lines are cut through gear rotation to generate power.
For heat energy extraction, in the prior art method, the low-temperature heat pipe technology and the wind heat exchange technology have low efficiency, and are not suitable for ventilation air methane recovery. Although the spray type heat extraction technology can well extract heat, the recovery device is often blocked and inconvenient to clean due to the fact that a great amount of coal particles and dust are carried in ventilation air. The direct cooling type deep enthalpy heat taking ventilation air methane heat pump technology greatly improves the recycling efficiency, but in winter, as a large part of energy in ventilation air methane is contained in water vapor, supercooled refrigerant can condense the water vapor in the ventilation air methane into ice, so that the energy in a large amount of water vapor is not utilized, and the energy waste is caused. For the extraction of kinetic energy, the wind power generation is simply carried out by the ventilation air methane, and huge energy contained in the ventilation air methane cannot be extracted.
Disclosure of Invention
The invention aims to provide a comprehensive utilization method of mine ventilation energy, which aims to solve the technical problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: a comprehensive utilization method of mine ventilation energy comprises the following steps: s100: draining the exhausted ventilation air methane, and reducing the wind speed of the ventilation air methane through a diffusion device; s200: s100, collecting part of the ventilation air methane after speed reduction through a flow collecting device, and adjusting the wind speed again to meet the rated parameter requirement of the wind driven generator, and adjusting the wind speed again through a flow guiding device; s300: s200, the ventilation air methane collected by the flow collecting device drives fan blades of the wind driven generator to rotate so as to generate wind power; s400: s300, converging the ventilation air methane generated after wind power generation with the ventilation air methane generated by the drainage device after wind speed adjustment, and converging the ventilation air methane into a heat exchange pipeline; s500: and S400, extracting heat energy in the ventilation air methane through a heat exchanger after the ventilation air methane is converged.
In an alternative embodiment, the step S100 includes: s101: draining the exhausted ventilation air methane by using a pipeline; s102: for the ventilation air after drainage, adjusting the ventilation air speed according to a formula V 1S1＝V2S2, wherein the ventilation air speed can be calculated through the cross-sectional area, V 1、V2 represents the ventilation air speed, and S 1、S2 represents the cross-sectional area of a pipeline; s103: the inlet of the diffusion device is small and the outlet is large.
In an alternative embodiment, the step S200 includes: s201: the ventilation air methane which is reduced in speed after passing through the diffusion device enters the current collecting device after passing through a certain distance; s202: the current collecting device adopts a design with a large inlet and a small outlet so as to improve the wind speed to meet the rated requirement of the wind driven generator; s203: and the other part of ventilation air methane which does not pass through the current collecting device passes through the current guiding device to adjust the wind speed.
In an alternative embodiment, the step S300 includes: s301: s202, the ventilation air methane collected by the current collecting device drives fan blades of the wind driven generator to rotate; s302: the rotation of the fan blades of the wind driven generator converts the rotation of the low-speed gear into the rotation of the high-speed gear; s303: under the rotation of the high-speed gear, the magnetic induction wire is cut to generate three-phase alternating current so as to generate power; s304: according to the three-phase alternating current obtained in S303, the three-phase alternating current is converted into electricity for use in a domestic or industrial application by operation of a transformer or the like.
In an alternative embodiment, the step S400 includes: s401: s301, the ventilation air methane after wind power generation is conducted, and the wind speed is adjusted again through the drainage device; s402: and S401, converging the ventilation air methane after the wind speed is regulated with the ventilation air methane in S203 in the heat exchange pipeline.
In an alternative embodiment, the step S500 includes: s501: s402, ventilation air methane in a heat exchange pipeline enters the heat exchanger; s502: the coolant in the heat exchanger absorbs heat in the ventilation air methane, and the coolant is converted into gaseous substances; s503: the gaseous substance obtained in S502 is introduced into a compressor; s504: compressing the gaseous substance by the compressor to convert the gaseous substance into high-temperature high-pressure gas; s505: the cold water is heated by the high-temperature and high-pressure gas in S504, thereby obtaining hot water.
In an alternative embodiment, the coolant is dry ice.
The invention has the beneficial effects that:
(1) The comprehensive utilization method of the mine ventilation energy not only can utilize a part of the kinetic energy contained in the ventilation air, but also can extract a large amount of heat energy in the ventilation air, thereby being economical and practical, and saving energy and reducing emission.
(2) According to the comprehensive utilization method of the mine ventilation energy, the ventilation air is directly output to obtain the electric power through the wind driven generator, a user can self-control the electric power, the wind speed of the ventilation air is stable, and the situation that more times and less times are caused by the seasonal problem in wind power generation is avoided. In the heat energy utilization, a large amount of heat energy is used for heating cold water, the temperature of the cold water is raised, and finally the heat energy can be used for inlet antifreezing, building heating, bath and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for comprehensively utilizing the ventilation energy of a mine according to an embodiment of the invention.
Fig. 2 is an overall effect diagram of a comprehensive utilization method of mine ventilation energy provided by an embodiment of the invention.
Fig. 3 is a schematic diagram of kinetic energy extraction in a method for comprehensively utilizing the ventilation energy of a mine according to an embodiment of the invention.
Fig. 4 is a schematic diagram of heat energy extraction in a method for comprehensively utilizing the ventilation energy of a mine according to an embodiment of the invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
Referring to fig. 1-4, the purpose of this embodiment is to provide a method for comprehensively utilizing ventilation energy of a mine, which includes the following steps:
S100: the exhausted ventilation air is drained, the wind speed of the ventilation air is reduced through the diffusion device, so that the device at the back can fully utilize the ventilation air, and the phenomenon that the ventilation air flows out due to the fact that heat exchange is not performed yet because the wind speed of the ventilation air is too high is avoided, and the energy utilization efficiency is reduced;
wherein S100 includes:
S101: draining the exhausted ventilation air methane by using a pipeline;
S102: for the ventilation air after drainage, according to a formula V 1S1＝V2S2, the ventilation air speed is adjusted, the ventilation air speed can be calculated through the cross-sectional area, wherein V 1、V2 represents the ventilation air speed, and S 1、S2 represents the cross-sectional area of a pipeline;
s103: the diffusion device has small inlet and large outlet, and can reduce the ventilation air speed.
S200: s100, collecting part of the ventilation air methane after speed reduction through a flow collecting device, and readjusting the wind speed to enable the ventilation air methane to meet the rated parameter requirements of the wind driven generator, and readjusting the wind speed through a flow guiding device;
Specifically, S200 includes:
S201: the ventilation air methane which is reduced in speed after passing through the diffusion device enters the flow collecting device after passing a certain distance, so that the redundancy of the device is avoided, and further, local vortex and partial backflow are formed;
S202: the current collecting device adopts the design of large inlet and small outlet so as to improve the wind speed to meet the rated requirement of the wind driven generator;
s203: and the other part of ventilation air which does not pass through the current collecting device adjusts the wind speed through the current guiding device.
S300: s200, the ventilation air methane collected by the flow collecting device drives fan blades of the wind driven generator to rotate so as to generate wind power;
further, S300 includes:
S301: s202, the ventilation air methane collected by the flow collecting device drives fan blades of the wind driven generator to rotate;
S302: the rotation of the fan blades of the wind driven generator converts the rotation of the low-speed gear into the rotation of the high-speed gear;
S303: under the rotation of the high-speed gear, the magnetic induction wire is cut to generate three-phase alternating current so as to generate power;
S304: according to the three-phase alternating current obtained in the step S303, the three-phase alternating current is converted into the electricity for life or industrial electricity under the working of a transformer and the like, and the electricity can be used for life of workers in mining areas and working of some equipment on the mine.
S400: s300, the ventilation air methane generated by wind power generation is converged with the ventilation air methane generated by the drainage device after the wind speed is regulated, and is converged into a heat exchange pipeline;
note that S400 includes:
s401: s301, the ventilation air methane after wind power generation is conducted, and the wind speed is adjusted again through a drainage device;
s402: the ventilation air methane after the wind speed is adjusted in S401 is converged with the ventilation air methane in S203 in the heat exchange pipeline.
S500: and S400, the ventilation air methane after being converged is extracted by the heat exchanger.
Finally, S500 includes:
s501: s402, ventilation air methane in a heat exchange pipeline enters a heat exchanger;
s502: the coolant in the heat exchanger absorbs heat in the ventilation air methane, and the coolant is converted into gaseous substances;
s503: the gaseous substance obtained in S502 enters a compressor;
S504: compressing gaseous substances by a compressor to convert the gaseous substances into high-temperature high-pressure gas;
S505: the cold water is heated by the high-temperature and high-pressure gas in S504, and hot water is obtained.
It is worth mentioning that by simulating different types of coolants by software, the coolant with the most heat absorption under the same condition is selected as the coolant of the heat exchanger, and the coolant is selected as dry ice, so that a large amount of heat can be released. Meanwhile, the dry ice is used as a coolant to prevent water vapor from condensing into ice, so that energy in a lot of water vapor is not utilized, and energy waste is caused. It should be noted that, the water vapor in the ventilation air methane is condensed into water by the cooling pipe where the dry ice is located, and the condensed water is guided and collected into the cold water in S505 to be heated together for use.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The comprehensive utilization method of the mine ventilation energy is characterized by comprising the following steps of:
s100: draining the exhausted ventilation air methane, and reducing the wind speed of the ventilation air methane through a diffusion device;
S200: s100, collecting part of the ventilation air methane after speed reduction through a flow collecting device, and adjusting the wind speed again to meet the rated parameter requirement of the wind driven generator, and adjusting the wind speed again through a flow guiding device;
The S200 includes:
S201: the ventilation air methane which is reduced in speed after passing through the diffusion device enters the current collecting device after passing through a certain distance;
S202: the current collecting device adopts a design with a large inlet and a small outlet so as to improve the wind speed to meet the rated requirement of the wind driven generator;
s203: the other part of ventilation air methane which does not pass through the current collecting device passes through the current guiding device to adjust the wind speed;
S300: s200, the ventilation air methane collected by the flow collecting device drives fan blades of the wind driven generator to rotate so as to generate wind power;
The S300 includes:
s301: s202, the ventilation air methane collected by the current collecting device drives fan blades of the wind driven generator to rotate;
S302: the rotation of the fan blades of the wind driven generator converts the rotation of the low-speed gear into the rotation of the high-speed gear;
S303: under the rotation of the high-speed gear, the magnetic induction wire is cut to generate three-phase alternating current so as to generate power;
s304: according to the three-phase alternating current obtained in the step S303, under the working of a transformer, the three-phase alternating current is converted into the electricity for use in the life or industry;
S400: s300, converging the ventilation air methane generated after wind power generation with the ventilation air methane generated by the drainage device after wind speed adjustment, and converging the ventilation air methane into a heat exchange pipeline;
s400 includes:
S401: s301, the ventilation air methane after wind power generation is conducted, and the wind speed is adjusted again through the drainage device;
S402: the ventilation air methane after the wind speed is adjusted in S401 is converged with the ventilation air methane in S203 in the heat exchange pipeline;
s500: and S400, extracting heat energy in the ventilation air methane through a heat exchanger after the ventilation air methane is converged.
2. The mine ventilation energy comprehensive utilization method of claim 1, wherein the S100 comprises:
s101: draining the exhausted ventilation air methane by using a pipeline;
S102: for the ventilation air after drainage, adjusting the ventilation air speed according to a formula V 1S1＝V2S2, wherein the ventilation air speed can be calculated through the cross-sectional area, V 1、V2 represents the ventilation air speed, and S 1、S2 represents the cross-sectional area of a pipeline;
s103: the inlet of the diffusion device is small and the outlet is large.
3. The mine ventilation energy comprehensive utilization method of claim 1, wherein the S500 comprises:
s501: s402, ventilation air methane in a heat exchange pipeline enters the heat exchanger;
S502: the coolant in the heat exchanger absorbs heat in the ventilation air methane, and the coolant is converted into gaseous substances;
s503: the gaseous substance obtained in S502 is introduced into a compressor;
S504: compressing the gaseous substance by the compressor to convert the gaseous substance into high-temperature high-pressure gas;
s505: the cold water is heated by the high-temperature and high-pressure gas in S504, thereby obtaining hot water.
4. The method for comprehensively utilizing the energy of the mine ventilation air energy according to claim 3, wherein the coolant is dry ice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210119763.2A CN114483239B (en) | 2022-02-09 | 2022-02-09 | Comprehensive utilization method of mine ventilation energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210119763.2A CN114483239B (en) | 2022-02-09 | 2022-02-09 | Comprehensive utilization method of mine ventilation energy |
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| Publication Number | Publication Date |
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| CN114483239A CN114483239A (en) | 2022-05-13 |
| CN114483239B true CN114483239B (en) | 2024-07-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697628A (en) * | 2013-12-19 | 2014-04-02 | 北京中矿博能节能科技有限公司 | Coal mine ventilation air waste heat mixed type heat-obtaining heat pump system |
| CN112943645A (en) * | 2021-04-08 | 2021-06-11 | 镇江市丹徒区粮机厂有限公司 | High-efficiency energy-saving fan with simple structure |
| CN113847112A (en) * | 2021-10-28 | 2021-12-28 | 太原理工大学 | Novel device for fully utilizing residual kinetic energy of ventilation air methane and using method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203629127U (en) * | 2013-11-26 | 2014-06-04 | 北京中矿博能节能科技有限公司 | Coal mine air feeding well mouth temperature adjusting system |
| CN106761921B (en) * | 2016-11-28 | 2018-09-28 | 山西文龙中美环能科技股份有限公司 | A kind of equipment system based on weary wind source heat pump |
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- 2022-02-09 CN CN202210119763.2A patent/CN114483239B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697628A (en) * | 2013-12-19 | 2014-04-02 | 北京中矿博能节能科技有限公司 | Coal mine ventilation air waste heat mixed type heat-obtaining heat pump system |
| CN112943645A (en) * | 2021-04-08 | 2021-06-11 | 镇江市丹徒区粮机厂有限公司 | High-efficiency energy-saving fan with simple structure |
| CN113847112A (en) * | 2021-10-28 | 2021-12-28 | 太原理工大学 | Novel device for fully utilizing residual kinetic energy of ventilation air methane and using method thereof |
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