CN116712694A - Prevent mud-spraying system of coal spontaneous combustion in coal storage yard - Google Patents
Prevent mud-spraying system of coal spontaneous combustion in coal storage yard Download PDFInfo
- Publication number
- CN116712694A CN116712694A CN202310580938.4A CN202310580938A CN116712694A CN 116712694 A CN116712694 A CN 116712694A CN 202310580938 A CN202310580938 A CN 202310580938A CN 116712694 A CN116712694 A CN 116712694A
- Authority
- CN
- China
- Prior art keywords
- mud
- coal
- preset
- less
- setting
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 187
- 238000005507 spraying Methods 0.000 title claims abstract description 99
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 63
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000002156 mixing Methods 0.000 claims abstract description 48
- 238000003756 stirring Methods 0.000 claims description 92
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 30
- 239000011159 matrix material Substances 0.000 claims description 20
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 5
- 239000002817 coal dust Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000002802 bituminous coal Substances 0.000 abstract description 11
- 238000010248 power generation Methods 0.000 abstract description 3
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
Abstract
The application relates to the technical field of thermal power generation, in particular to a mud spraying system for preventing spontaneous combustion of coal in a coal storage yard. Comprising the following steps: a carbonated water unit for generating carbonated water; a coal slime unit for generating primary coal slime; the mixing unit is connected with the carbonated water unit and the coal slime unit through connecting pipes and is used for controlling the carbonated water and the primary coal slime to be mixed to generate coal slime; the mud spraying unit is connected with the mixing unit and used for controlling the flow rate of the coal mud; and the control unit is used for setting working parameters of the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit. Through setting up a plurality of mud dividing pipes and branch valves in the coal storage place top, when finding the region that has the spontaneous combustion trend, the branch valve of the mud dividing pipe of this region top is opened according to the position that this region is located, carries out the mud spraying, prevents that the bituminous coal from taking place the spontaneous combustion and realizes accurate mud spraying.
Description
Technical Field
The application relates to the technical field of thermal power generation, in particular to a mud spraying system for preventing spontaneous combustion of coal in a coal storage yard.
Background
In order to meet the power generation requirement and ensure the power consumption of a society, a large-scale coal storage yard is generally built for storing a large amount of coal.
The coal storage sites often cannot burn old and store new due to limited sites, centralized coal coming, boiler blending requirements and the like, so that the coal storage time is overlong, wherein the problems of spontaneous combustion of coal are extremely easy to occur due to high volatilization of bituminous coal, and huge economic loss and potential safety hazard are caused by spontaneous combustion of coal.
Disclosure of Invention
The purpose of the application is that: in order to solve the technical problems, the application provides a mud spraying system for preventing spontaneous combustion of coal in a coal storage yard, which aims to prevent spontaneous combustion of a coal pile in the coal storage yard and eliminate fire safety hidden trouble.
In some embodiments of the application, by arranging a plurality of mud dividing pipes and valves above a coal storage yard, when an area with spontaneous combustion tendency is found, the valves of the mud dividing pipes above the area are selected to be opened according to the position of the area, so as to spray mud, and the bituminous coal is prevented from spontaneous combustion, so that accurate mud spraying is realized.
In some embodiments of the application, by arranging the mud spraying system, the coal mud is sprayed to cover the surface of the soft coal easy to self-ignite, so that the air content among soft coal particles is reduced, the contact of the high-volatile soft coal with the air is slowed down to generate oxidation reaction, the possibility of further self-ignite of the soft coal is prevented, meanwhile, the sprayed coal mud contains carbonic acid water, and a carbon dioxide protection layer is formed on a coal pile after the carbonic acid water is decomposed, so that the self-ignite of the soft coal is avoided.
In some embodiments of the present application, there is provided a mud injection system for preventing spontaneous combustion of coal in a coal storage yard, comprising:
a carbonated water unit for generating carbonated water;
a coal slime unit for generating primary coal slime;
the mixing unit is connected with the carbonated water unit and the coal slime unit through connecting pipes and is used for controlling the carbonated water and the primary coal slime to be mixed to generate coal slime;
the mud spraying unit is connected with the mixing unit and is used for controlling the flow rate of coal mud;
the control unit is connected with the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit through wireless signals, and is used for setting working parameters of the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit.
In some embodiments of the application, the mud-spraying unit comprises:
the main mud pipe, main mud pipe one end is connected with mixing unit, be provided with main valve 'in the main mud pipe'
The system comprises a main mud pipe, a mud separating structure, a main mud pipe, a plurality of mud spraying ports, a plurality of valve blocks, a plurality of control valves and a plurality of control valves, wherein one end of the mud separating structure is connected with the main mud pipe, the mud separating structure comprises a plurality of mud separating pipes, the mud separating pipes are provided with the mud spraying ports, and coal mud flows out of the mud separating pipes through the mud spraying ports;
the control unit is used for controlling the opening degree of the main valve and the opening degree of the sub valve.
In some embodiments of the application, the carbonated water unit comprises:
a carbon dioxide generator for generating carbon dioxide;
the mixing box is connected with the carbon dioxide generator through a first connecting pipeline, a booster pump is arranged on the first connecting pipeline, and the mixing box is used for generating carbonated water.
The water tank is connected with the mixing box through a second connecting pipeline, and a water pump is arranged on the second connecting pipeline.
In some embodiments of the application, the coal slime unit comprises:
the first mixer comprises a shell and a powder inlet, and a stirring structure is arranged in the shell;
the third connecting pipeline is used for connecting the first mixer and the water tank, and a water pump is arranged on the third connecting pipeline;
the first mixer is used for stirring coal dust and water to form primary coal slime.
In some embodiments of the application, the mixing unit comprises:
the second mixer comprises a shell and a stirring structure, and is used for controlling the mixing of the carbonated water and the primary coal slime to generate coal slime;
the second mixer is connected with the mixing box through the fourth connecting pipeline, and a water pump is arranged on the fourth connecting pipeline;
the second mixer is connected with the first mixer through the fifth connecting pipeline, and a first slurry pump is arranged on the fifth connecting pipeline;
and the second mixer is connected with the main mud pipe through the sixth connecting pipeline, and a second mud pump is arranged on the sixth connecting pipeline.
In some embodiments of the application, the control unit comprises:
the monitoring module is used for collecting environment data and generating spontaneous combustion trend areas according to the environment data;
the first control module is used for setting the mud spraying amount according to the spontaneous combustion trend area and setting the opening of the main valve and the opening of the sub-valve according to the mud spraying amount;
and the second control module is used for acquiring the real-time mud spraying amount and setting the coal mud generation amount according to the real-time mud spraying amount.
In some embodiments of the application, the first control module is further configured to:
presetting an spontaneous combustion trend area matrix A, and setting A (A1, A2, A3 and A4), wherein A1 is a preset first spontaneous combustion trend area, A2 is a preset second spontaneous combustion trend area, A3 is a preset third spontaneous combustion trend area, A4 is a preset fourth spontaneous combustion trend area, and A1 is more than A2 and less than A3 and less than A4;
presetting a mud spraying amount matrix B, and setting B (B1, B2, B3 and B4), wherein B1 is a preset first mud spraying amount, B2 is a preset second mud spraying amount, B3 is a preset third mud spraying amount, B4 is a preset fourth mud spraying amount, and B1 is more than B2 and less than B3 and less than B4;
acquiring an spontaneous combustion trend area a, and setting a real-time mud spraying amount b according to the spontaneous combustion trend area a;
if A1 is less than a < A2, setting the real-time mud spraying amount B as a preset first mud spraying amount B1, namely b=b1;
if A2 is less than A3, setting the real-time mud spraying amount B as a preset second mud spraying amount B2, namely b=b2;
if A3 is less than a < A4, setting the real-time mud spraying amount B as a preset third mud spraying amount B3, namely b=b3;
if a > A4, the real-time mud-spraying amount B is set to be the preset fourth mud-spraying amount B4, i.e., b=b4.
In some embodiments of the application, the control unit further comprises:
the third control module is used for setting the stirring rate of the second mixer according to the coal slime generation amount;
the third control module is also used for acquiring the height of the coal slime in the second mixing box and correcting the stirring speed of the second mixer according to the height of the coal slime.
In some embodiments of the application, the third control module is further configured to:
presetting a coal slime generation amount matrix C, and setting C (C1, C2, C3 and C4), wherein C1 is a preset first coal slime generation amount, C2 is a preset second coal slime generation amount, C3 is a preset third coal slime generation amount, C4 is a preset fourth coal slime generation amount, and C1 is more than C2 and less than C3 and less than C4;
presetting a stirring speed matrix V, and setting V (V1, V2, V3 and V4), wherein V1 is a preset first stirring speed, V2 is a preset second stirring speed, V3 is a preset third stirring speed, V4 is a preset fourth stirring speed, and V1 is less than V2 and less than V3 is less than V4;
acquiring a preset coal slime generation amount c, and setting the stirring speed v of a second mixer according to the preset coal slime generation amount c;
if C1 is less than C2, setting the stirring speed V to be a preset first stirring speed V1, namely v=v1;
if C2 is less than C3, setting the stirring speed V to be a preset second stirring speed V2, namely v=v2;
if C3 is less than C4, setting the stirring speed V to be a preset third stirring speed V3, namely v=v3;
if C > C4, the stirring rate V is set to a preset fourth stirring rate V4, i.e., v=v4.
In some embodiments of the application, the third control module is further configured to:
presetting a coal slime height matrix D, and setting D (D1, D2, D3 and D4), wherein D1 is preset first coal slime height, D2 is preset second coal slime height, D3 is preset third coal slime height, D4 is preset fourth coal slime height, and D1 is more than D2 and less than D3 and less than D4;
presetting a stirring speed correction coefficient matrix N, and setting N (N1, N2, N3 and N4), wherein N1 is a preset first stirring speed correction coefficient, N2 is a preset second stirring speed correction coefficient, N3 is a preset third stirring speed correction coefficient, N4 is a preset fourth stirring speed correction coefficient, and N1 is more than N2 and less than 1 and less than N3 and less than N4;
acquiring the coal slime height d in the second mixing box, setting a correction coefficient n according to the coal slime height d, and correcting the stirring speed v of the second mixer;
if D is less than D1, setting n=n1, and correcting the stirring speed v=n1+Vi;
if D1 is less than D and less than D2, setting n=n2, and correcting the stirring speed v=n2+Vi;
if D2 is less than D and less than D3, not correcting the stirring speed v;
if D3 is less than D and less than D4, setting n=n3, and correcting the stirring speed v=n3+Vi;
if D > D4, n=n4 is set, and the corrected stirring speed v=n4+Vi.
Compared with the prior art, the mud spraying system for preventing spontaneous combustion of coal in the coal storage yard has the beneficial effects that:
through setting up a plurality of mud dividing pipes and branch valves in the coal storage place top, when finding the region that has the spontaneous combustion trend, the branch valve of the mud dividing pipe of this region top is opened according to the position that this region is located, carries out the mud spraying, prevents that the bituminous coal from taking place the spontaneous combustion and realizes accurate mud spraying.
Through setting up the mud spraying system, the coal slime blowout covers on the bituminous coal surface of easy spontaneous combustion, has reduced the air content between the bituminous coal granule, slows down high volatile bituminous coal and air contact and takes place oxidation reaction, has prevented that the bituminous coal from further taking place the possibility of spontaneous combustion, contains carbonic acid water in the spun coal slime simultaneously, and carbonic acid water decomposes and can form the carbon dioxide protective layer on the coal pile after coming out, avoids the bituminous coal spontaneous combustion.
Drawings
FIG. 1 is a schematic illustration of a mud-jet system for preventing spontaneous combustion of coal in a coal yard in accordance with a preferred embodiment of the present application
In the figure, 1, a powder inlet; 2. a third connecting pipe; 3. a water tank; 4. a carbon dioxide generator; 5. a mixing box; 6. a second mixer; 7. a main mud pipe; 8. a mud separating pipe; 9. a mud spraying port; 10. a second slurry pump; 11. a first mud pump; 12. a fifth connecting pipe; 13. a first mixer; 14. a main valve; 15. a sub-valve; 16. and a pressurizing pump.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, 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 indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, a mud-jet system for preventing spontaneous combustion of coal in a coal yard according to a preferred embodiment of the present application includes:
a carbonated water unit for generating carbonated water;
the coal slime unit is used for generating primary coal slime;
the mixing unit is connected with the carbonated water unit and the coal slime unit through connecting pipes and is used for controlling the carbonated water and the primary coal slime to be mixed to generate coal slime;
the mud spraying unit is connected with the mixing unit and used for controlling the flow rate of the coal mud;
the control unit is connected with the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit through wireless signals and is used for setting working parameters of the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit.
Specifically, the mud-spraying unit includes:
a main mud pipe 7, one end of the main mud pipe 7 is connected with the mixing unit, and a main valve 14 'is arranged in the main mud pipe 7'
The system comprises a mud dividing structure, wherein one end of the mud dividing structure is connected with a main mud pipe 7, the mud dividing structure comprises a plurality of mud dividing pipes 8, a plurality of mud spraying ports 9 are formed in the mud dividing pipes 8, a mud dividing valve 15 is arranged in each mud dividing pipe 8, and coal mud flows out of the mud dividing pipes 8 through the mud spraying ports 9;
the control unit is used to control the opening of the main valve 14 and the sub valve 15.
Specifically, a plurality of divide mud pipe 8 evenly distributed in the coal yard top, a plurality of divide mud pipe 8 all communicate with main mud pipe 7, carbonated water enters into every divide mud pipe 8 through main mud pipe 7 under the effect of first slush pump 11 after mixing with the coal slime, all be provided with a plurality of spouts 9 on every divide mud pipe 8 simultaneously, carry out the mud spraying through spouting mouthful 9, all be provided with minute valve 15 on every divide mud pipe 8, be provided with main valve 14 on the main mud pipe 7, main valve 14 control main mud pipe 7 break-make, divide valve 15 control corresponding divide mud pipe 8 to let in the coal slime, because the coal of coal yard has the whole area of spontaneous combustion trend, when the region that has the spontaneous combustion trend is found, the minute valve 15 of this regional top of minute mud pipe 8 is selected according to the position that this region is located, carry out the mud spraying.
Specifically, the carbonated water unit includes:
a carbon dioxide generator 4 for generating carbon dioxide;
mixing tank 5, mixing tank 5 is connected with carbon dioxide generator 4 through first connecting line, is provided with force (forcing) pump 16 on the first connecting line, and mixing tank 5 is used for producing carbonated water.
The water tank 3 is connected with the mixing box 5 through a second connecting pipeline, and a water pump is arranged on the second connecting pipeline.
Specifically, the water in the tank is pumped into the mixing tank 5 by the water pump, and the carbon dioxide generated by the carbon dioxide generator 4 is introduced into the water in the mixing tank 5 by the pressurizing pump 16 to be mixed with the water, and the carbonated water is generated after the mixing is completed.
Specifically, the coal slime unit includes:
the first mixer 13, the first mixer 13 includes shell and powder inlet 1, there is stirring structure in the shell;
a third connecting pipeline 2 for connecting the first mixer 13 and the water tank 3, wherein a water pump is arranged on the third connecting pipeline 2;
the first mixer 13 is used to agitate the coal dust with water to form a primary slurry.
Specifically, the water in the water tank 3 is pumped into the first mixer 13 by the water pump, then the stirring device is started, and the pulverized coal is poured into the first mixer 13 through the powder inlet 1 and is continuously stirred so that the pulverized coal and the water are mixed to form primary coal slime.
Specifically, the mixing unit includes:
the second mixer 6, the second mixer 6 includes shell and stirring structure, the second mixer 6 is used for controlling carbonated water and primary coal slime to mix and produce the coal slime;
the second mixer 6 is connected with the mixing box 5 through a fourth connecting pipeline, and a water pump is arranged on the fourth connecting pipeline;
a fifth connecting pipe 12, the second mixer 6 is connected with the first mixer 13 through the fifth connecting pipe 12, and the fifth connecting pipe 12 is provided with a first slurry pump 11;
the second mixer 6 is connected with the main mud pipe 7 through a sixth connecting pipe, on which a second mud pump 10 is arranged.
Specifically, the carbonated water is pumped into the second mixer 6 under the action of the water pump, and the coal slime is pumped into the second mixer 6 under the action of the first slurry pump 11 on the connecting pipe, so that the coal slime and the carbonated water are mixed to finish the final coal slime;
coal slime enters into each mud dividing pipe 8 through the main mud pipe 7 under the action of the second mud pump 10, and meanwhile, a plurality of mud spraying ports 9 are formed in each mud dividing pipe 8, and mud spraying is carried out through the mud spraying ports 9.
In a preferred embodiment of the present application, the control unit includes:
the monitoring module is used for collecting environmental data and generating an spontaneous combustion trend area according to the environmental data;
the first control module is used for setting the mud spraying amount according to the spontaneous combustion trend area and setting the opening of the main valve 14 and the sub valve 15 according to the mud spraying amount;
and the second control module is used for acquiring the real-time mud spraying amount and setting the coal mud generation amount according to the real-time mud spraying amount.
Specifically, the amount of produced coal slime is equal to or higher than the amount of sprayed slime.
Specifically, the first control module is further configured to:
presetting an spontaneous combustion trend area matrix A, and setting A (A1, A2, A3 and A4), wherein A1 is a preset first spontaneous combustion trend area, A2 is a preset second spontaneous combustion trend area, A3 is a preset third spontaneous combustion trend area, A4 is a preset fourth spontaneous combustion trend area, and A1 is more than A2 and less than A3 and less than A4;
presetting a mud spraying amount matrix B, and setting B (B1, B2, B3 and B4), wherein B1 is a preset first mud spraying amount, B2 is a preset second mud spraying amount, B3 is a preset third mud spraying amount, B4 is a preset fourth mud spraying amount, and B1 is more than B2 and less than B3 and less than B4;
acquiring an spontaneous combustion trend area a, and setting a real-time mud spraying amount b according to the spontaneous combustion trend area a;
if A1 is less than a < A2, setting the real-time mud spraying amount B as a preset first mud spraying amount B1, namely b=b1;
if A2 is less than A3, setting the real-time mud spraying amount B as a preset second mud spraying amount B2, namely b=b2;
if A3 is less than a < A4, setting the real-time mud spraying amount B as a preset third mud spraying amount B3, namely b=b3;
if a > A4, the real-time mud-spraying amount B is set to be the preset fourth mud-spraying amount B4, i.e., b=b4.
It will be appreciated that in the above embodiment, by setting the auto-ignition trend area matrix and the mud-spraying amount matrix, the mud-spraying amount is dynamically adjusted according to the auto-ignition trend area, and by setting the plurality of mud-dividing pipes 8 and the sub-valves above the coal storage yard, when the area with the auto-ignition trend is found, mud is sprayed by adjusting the opening of the sub-valves, so that the auto-ignition of the bituminous coal is prevented, and the accurate mud spraying is realized.
In a preferred embodiment of the present application, the control unit further includes:
the third control module is used for setting the stirring rate of the second mixer 6 according to the coal slime generation amount;
the third control module is further configured to obtain a slurry height in the second mixing tank 5, and correct the stirring rate of the second mixer 6 according to the slurry height.
Specifically, the real-time generation amount of the coal slime is set according to the amount of the slime, and the amount of the slime is equal to the set generation amount of the coal slime.
Specifically, the third control module is further configured to:
presetting a coal slime generation amount matrix C, and setting C (C1, C2, C3 and C4), wherein C1 is a preset first coal slime generation amount, C2 is a preset second coal slime generation amount, C3 is a preset third coal slime generation amount, C4 is a preset fourth coal slime generation amount, and C1 is more than C2 and less than C3 and less than C4;
presetting a stirring speed matrix V, and setting V (V1, V2, V3 and V4), wherein V1 is a preset first stirring speed, V2 is a preset second stirring speed, V3 is a preset third stirring speed, V4 is a preset fourth stirring speed, and V1 is less than V2 and less than V3 is less than V4;
acquiring a preset coal slime generation amount c, and setting the stirring speed v of the second mixer according to the preset coal slime generation amount c;
if C1 is less than C2, setting the stirring speed V to be a preset first stirring speed V1, namely v=v1;
if C2 is less than C3, setting the stirring speed V to be a preset second stirring speed V2, namely v=v2;
if C3 is less than C4, setting the stirring speed V to be a preset third stirring speed V3, namely v=v3;
if C > C4, the stirring rate V is set to a preset fourth stirring rate V4, i.e., v=v4.
Specifically, the third control module is further configured to:
presetting a coal slime height matrix D, and setting D (D1, D2, D3 and D4), wherein D1 is preset first coal slime height, D2 is preset second coal slime height, D3 is preset third coal slime height, D4 is preset fourth coal slime height, and D1 is more than D2 and less than D3 and less than D4;
presetting a stirring speed correction coefficient matrix N, and setting N (N1, N2, N3 and N4), wherein N1 is a preset first stirring speed correction coefficient, N2 is a preset second stirring speed correction coefficient, N3 is a preset third stirring speed correction coefficient, N4 is a preset fourth stirring speed correction coefficient, and N1 is more than N2 and less than 1 and less than N3 and less than N4;
acquiring the coal slime height d in the second mixing box, setting a correction coefficient n according to the coal slime height d, and correcting the stirring speed v of the second mixer;
if D is less than D1, setting n=n1, and correcting the stirring speed v=n1+Vi;
if D1 is less than D and less than D2, setting n=n2, and correcting the stirring speed v=n2+Vi;
if D2 is less than D and less than D3, not correcting the stirring speed v;
if D3 is less than D and less than D4, setting n=n3, and correcting the stirring speed v=n3+Vi;
if D > D4, n=n4 is set, and the corrected stirring speed v=n4+Vi.
It can be appreciated that in the above embodiment, the stirring speed is set according to the generated amount of the coal slime, and the stirring speed is corrected according to the height of the coal slime in the second mixer, so that the timely supply of the coal slime is ensured, and the spontaneous combustion area of the coal yard is prevented from being treated due to less delay of the coal slime.
According to the first conception of the application, by arranging a plurality of mud dividing pipes and valves above the coal storage yard, when an area with spontaneous combustion tendency is found, the valves of the mud dividing pipes above the area are selected to be opened according to the position of the area to spray mud, so that the bituminous coal is prevented from spontaneous combustion, and the accurate mud spraying is realized.
According to the second conception of the application, by arranging the mud spraying system, the coal mud is sprayed to cover the surface of the soft coal easy to be self-ignited, so that the air content among soft coal particles is reduced, the contact of the high-volatile soft coal with the air is slowed down to generate oxidation reaction, the possibility of further self-ignited soft coal is prevented, meanwhile, the sprayed coal mud contains carbonic acid water, and a carbon dioxide protection layer is formed on a coal pile after the carbonic acid water is decomposed, so that the self-ignited soft coal is avoided.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and these modifications and substitutions should also be considered as being within the scope of the present application.
Claims (10)
1. A mud-blast system for preventing spontaneous combustion of coal in a coal yard, comprising:
a carbonated water unit for generating carbonated water;
a coal slime unit for generating primary coal slime;
the mixing unit is connected with the carbonated water unit and the coal slime unit through connecting pipes and is used for controlling the carbonated water and the primary coal slime to be mixed to generate coal slime;
the mud spraying unit is connected with the mixing unit and is used for controlling the flow rate of coal mud;
the control unit is connected with the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit through wireless signals, and is used for setting working parameters of the carbonated water unit, the coal slime unit, the mixing unit and the mud spraying unit.
2. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 1, wherein said mud-jet unit comprises:
the main mud pipe, main mud pipe one end is connected with mixing unit, be provided with main valve 'in the main mud pipe'
The system comprises a main mud pipe, a mud separating structure, a main mud pipe, a plurality of mud spraying ports, a plurality of valve blocks, a plurality of control valves and a plurality of control valves, wherein one end of the mud separating structure is connected with the main mud pipe, the mud separating structure comprises a plurality of mud separating pipes, the mud separating pipes are provided with the mud spraying ports, and coal mud flows out of the mud separating pipes through the mud spraying ports;
the control unit is used for controlling the opening degree of the main valve and the opening degree of the sub valve.
3. The mud-blast system for preventing spontaneous combustion of coal in a coal yard of claim 2, wherein said carbonated water unit comprises:
a carbon dioxide generator for generating carbon dioxide;
the mixing box is connected with the carbon dioxide generator through a first connecting pipeline, a booster pump is arranged on the first connecting pipeline, and the mixing box is used for generating carbonated water.
The water tank is connected with the mixing box through a second connecting pipeline, and a water pump is arranged on the second connecting pipeline.
4. A mud-blast system for preventing spontaneous combustion of coal in a coal yard as claimed in claim 3, wherein said mud unit comprises:
the first mixer comprises a shell and a powder inlet, and a stirring structure is arranged in the shell;
the third connecting pipeline is used for connecting the first mixer and the water tank, and a water pump is arranged on the third connecting pipeline;
the first mixer is used for stirring coal dust and water to form primary coal slime.
5. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 4, wherein said mixing unit comprises:
the second mixer comprises a shell and a stirring structure, and is used for controlling the mixing of the carbonated water and the primary coal slime to generate coal slime;
the second mixer is connected with the mixing box through the fourth connecting pipeline, and a water pump is arranged on the fourth connecting pipeline;
the second mixer is connected with the first mixer through the fifth connecting pipeline, and a first slurry pump is arranged on the fifth connecting pipeline;
and the second mixer is connected with the main mud pipe through the sixth connecting pipeline, and a second mud pump is arranged on the sixth connecting pipeline.
6. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 5, wherein said control unit comprises:
the monitoring module is used for collecting environment data and generating spontaneous combustion trend areas according to the environment data;
the first control module is used for setting the mud spraying amount according to the spontaneous combustion trend area and setting the opening of the main valve and the opening of the sub-valve according to the mud spraying amount;
and the second control module is used for acquiring the real-time mud spraying amount and setting the coal mud generation amount according to the real-time mud spraying amount.
7. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 6, wherein said first control module is further configured to:
presetting an spontaneous combustion trend area matrix A, and setting A (A1, A2, A3 and A4), wherein A1 is a preset first spontaneous combustion trend area, A2 is a preset second spontaneous combustion trend area, A3 is a preset third spontaneous combustion trend area, A4 is a preset fourth spontaneous combustion trend area, and A1 is more than A2 and less than A3 and less than A4;
presetting a mud spraying amount matrix B, and setting B (B1, B2, B3 and B4), wherein B1 is a preset first mud spraying amount, B2 is a preset second mud spraying amount, B3 is a preset third mud spraying amount, B4 is a preset fourth mud spraying amount, and B1 is more than B2 and less than B3 and less than B4;
acquiring an spontaneous combustion trend area a, and setting a real-time mud spraying amount b according to the spontaneous combustion trend area a;
if A1 is less than a < A2, setting the real-time mud spraying amount B as a preset first mud spraying amount B1, namely b=b1;
if A2 is less than A3, setting the real-time mud spraying amount B as a preset second mud spraying amount B2, namely b=b2;
if A3 is less than a < A4, setting the real-time mud spraying amount B as a preset third mud spraying amount B3, namely b=b3;
if a > A4, the real-time mud-spraying amount B is set to be the preset fourth mud-spraying amount B4, i.e., b=b4.
8. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 7, wherein said control unit further comprises:
the third control module is used for setting the stirring rate of the second mixer according to the coal slime generation amount;
the third control module is also used for acquiring the height of the coal slime in the second mixing box and correcting the stirring speed of the second mixer according to the height of the coal slime.
9. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 3, wherein said third control module is further configured to:
presetting a coal slime generation amount matrix C, and setting C (C1, C2, C3 and C4), wherein C1 is a preset first coal slime generation amount, C2 is a preset second coal slime generation amount, C3 is a preset third coal slime generation amount, C4 is a preset fourth coal slime generation amount, and C1 is more than C2 and less than C3 and less than C4;
presetting a stirring speed matrix V, and setting V (V1, V2, V3 and V4), wherein V1 is a preset first stirring speed, V2 is a preset second stirring speed, V3 is a preset third stirring speed, V4 is a preset fourth stirring speed, and V1 is less than V2 and less than V3 is less than V4;
acquiring a preset coal slime generation amount c, and setting the stirring speed v of a second mixer according to the preset coal slime generation amount c;
if C1 is less than C2, setting the stirring speed V to be a preset first stirring speed V1, namely v=v1;
if C2 is less than C3, setting the stirring speed V to be a preset second stirring speed V2, namely v=v2;
if C3 is less than C4, setting the stirring speed V to be a preset third stirring speed V3, namely v=v3;
if C > C4, the stirring rate V is set to a preset fourth stirring rate V4, i.e., v=v4.
10. The mud-jet system for preventing spontaneous combustion of coal in a coal yard of claim 9, wherein said third control module is further configured to:
presetting a coal slime height matrix D, and setting D (D1, D2, D3 and D4), wherein D1 is preset first coal slime height, D2 is preset second coal slime height, D3 is preset third coal slime height, D4 is preset fourth coal slime height, and D1 is more than D2 and less than D3 and less than D4;
presetting a stirring speed correction coefficient matrix N, and setting N (N1, N2, N3 and N4), wherein N1 is a preset first stirring speed correction coefficient, N2 is a preset second stirring speed correction coefficient, N3 is a preset third stirring speed correction coefficient, N4 is a preset fourth stirring speed correction coefficient, and N1 is more than N2 and less than 1 and less than N3 and less than N4;
acquiring the coal slime height d in the second mixing box, setting a correction coefficient n according to the coal slime height d, and correcting the stirring speed v of the second mixer;
if D is less than D1, setting n=n1, and correcting the stirring speed v=n1+Vi;
if D1 is less than D and less than D2, setting n=n2, and correcting the stirring speed v=n2+Vi;
if D2 is less than D and less than D3, not correcting the stirring speed v;
if D3 is less than D and less than D4, setting n=n3, and correcting the stirring speed v=n3+Vi;
if D > D4, n=n4 is set, and the corrected stirring speed v=n4+Vi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310580938.4A CN116712694B (en) | 2023-05-22 | Prevent mud-spraying system of coal spontaneous combustion in coal storage yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310580938.4A CN116712694B (en) | 2023-05-22 | Prevent mud-spraying system of coal spontaneous combustion in coal storage yard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116712694A true CN116712694A (en) | 2023-09-08 |
| CN116712694B CN116712694B (en) | 2024-10-25 |
Family
ID=
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9002101L (en) * | 1990-06-13 | 1991-12-14 | Abb Carbon Ab | PROVIDED TO PREVENT SELF-IGNITION BY COAL STORAGE |
| US20040231862A1 (en) * | 2003-05-22 | 2004-11-25 | Kirn Michael D. | Corrosion monitoring station |
| RU2290238C1 (en) * | 2005-05-11 | 2006-12-27 | ФГУП "Центральный научно-исследовательский институт геологии нерудных полезных ископаемых" | Method for peat fire prevention, localization and suppression |
| CN202022888U (en) * | 2010-06-11 | 2011-11-02 | 阎绪芝 | Cooling and sparkle extinguishing device by silt spraying for dust remover of cock over |
| WO2012028155A1 (en) * | 2010-09-02 | 2012-03-08 | Mohamed Ahmed Abd Elmohsen | Force back fire fighting technology |
| CN102746918A (en) * | 2012-07-31 | 2012-10-24 | 广州唯普电力科技有限公司 | Method for restraining coal pile spontaneous ignition, special inhibitor of method and preparation method of inhibitor |
| CN205832450U (en) * | 2016-07-13 | 2016-12-28 | 滨海金地矿业工程技术(北京)有限公司 | The fire extinguishing device of a kind of coal drying system and coal drying system |
| KR20170067015A (en) * | 2015-12-07 | 2017-06-15 | 한국전력공사 | Preventing ignition and fire extinguishing system in inside of pile of coal |
| CN214512341U (en) * | 2021-02-24 | 2021-10-29 | 华能(福建漳州)能源有限责任公司 | Device for preventing spontaneous combustion of bar-shaped coal storage yard |
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9002101L (en) * | 1990-06-13 | 1991-12-14 | Abb Carbon Ab | PROVIDED TO PREVENT SELF-IGNITION BY COAL STORAGE |
| US20040231862A1 (en) * | 2003-05-22 | 2004-11-25 | Kirn Michael D. | Corrosion monitoring station |
| RU2290238C1 (en) * | 2005-05-11 | 2006-12-27 | ФГУП "Центральный научно-исследовательский институт геологии нерудных полезных ископаемых" | Method for peat fire prevention, localization and suppression |
| CN202022888U (en) * | 2010-06-11 | 2011-11-02 | 阎绪芝 | Cooling and sparkle extinguishing device by silt spraying for dust remover of cock over |
| WO2012028155A1 (en) * | 2010-09-02 | 2012-03-08 | Mohamed Ahmed Abd Elmohsen | Force back fire fighting technology |
| CN102746918A (en) * | 2012-07-31 | 2012-10-24 | 广州唯普电力科技有限公司 | Method for restraining coal pile spontaneous ignition, special inhibitor of method and preparation method of inhibitor |
| KR20170067015A (en) * | 2015-12-07 | 2017-06-15 | 한국전력공사 | Preventing ignition and fire extinguishing system in inside of pile of coal |
| CN205832450U (en) * | 2016-07-13 | 2016-12-28 | 滨海金地矿业工程技术(北京)有限公司 | The fire extinguishing device of a kind of coal drying system and coal drying system |
| CN214512341U (en) * | 2021-02-24 | 2021-10-29 | 华能(福建漳州)能源有限责任公司 | Device for preventing spontaneous combustion of bar-shaped coal storage yard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102002395B (en) | Method and device for dissolving gas in liquid-phase circulating hydrodesulfurization system | |
| CN101391904B (en) | Urea melting apparatus | |
| CN116712694B (en) | Prevent mud-spraying system of coal spontaneous combustion in coal storage yard | |
| CN116712694A (en) | Prevent mud-spraying system of coal spontaneous combustion in coal storage yard | |
| CN210410259U (en) | Coal water slurry additive supply device | |
| CN217068736U (en) | High-efficient gas-liquid distributor is used in production of gas-containing beverage | |
| CN209152239U (en) | A kind of plant fiber fermentation solid drink and production process system | |
| CN1072028C (en) | Production of solid by precipitation method | |
| CN214270769U (en) | Acetylene generator | |
| CN209999577U (en) | foaming equipment | |
| CN216826510U (en) | Production line of water-soluble fertile of amino acid | |
| CN210385871U (en) | Coal water slurry additive synthesizer | |
| CN2295587Y (en) | Concrete proportioning apparatus with two discharging holes | |
| CN114793585A (en) | Multi-functional forestry fertilizer applicator | |
| CN210186949U (en) | Vertical stirring mill for stirring and grinding organic matters and inorganic matters | |
| CN110237800A (en) | Slurries additive agent synthesizer | |
| CN210544282U (en) | Powder denitration agent gasification combustor | |
| CN220496253U (en) | Automatic water supplementing device for mixture | |
| CN214553553U (en) | Nano calcium carbonate carbonization tower | |
| CN216677907U (en) | Mixing arrangement is used in production of waterborne zinc stearate | |
| CN208544854U (en) | A kind of fine coal system and methanol gasifying system | |
| CN213493268U (en) | Preparation system of coal water slurry additive | |
| CN209333740U (en) | A kind of reaction kettle | |
| CN212832855U (en) | Continuous production device combining ammonium magnesium phosphate and soda ash | |
| CN219333765U (en) | Deacidification treatment system |
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 | ||
| GR01 | Patent grant |