CN115382372B - Novel power saving system and method for desulfurization and denitrification of coke oven - Google Patents
Novel power saving system and method for desulfurization and denitrification of coke oven Download PDFInfo
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- CN115382372B CN115382372B CN202211013894.9A CN202211013894A CN115382372B CN 115382372 B CN115382372 B CN 115382372B CN 202211013894 A CN202211013894 A CN 202211013894A CN 115382372 B CN115382372 B CN 115382372B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention provides a novel power-saving system and method for desulfurization and denitrification of a coke oven, wherein the method comprises the following steps: the flue gas flows into a first flue gas pipeline and a second flue gas pipeline through a flue gas outlet of the boiler, flows into a desulfurization and denitration mechanism through a first booster fan and a second booster fan, and then enters a waste heat boiler after desulfurization and denitration, wherein part of flue gas flows into a cooler, the flue gas in the waste heat boiler flows into a chimney through a third booster fan, is discharged to the atmosphere through the chimney, a controller collects data detected by a booster fan detection module, the state of a novel coke oven desulfurization and denitration power saving system is regulated and controlled according to the detection data, and the controller collects system load and regulates the states of the first booster fan and the second booster fan according to the system load. The novel coke oven desulfurization and denitrification power saving system and method provided by the invention can be used for carrying out safety detection on the booster fan, preventing economic loss or accidents caused by damage of the booster fan, reducing the electric quantity consumption of the booster fan and reducing the production cost.
Description
Technical Field
The invention relates to the technical field of coal chemical industry, in particular to a novel power-saving system and method for desulfurization and denitrification of a coke oven.
Background
When the booster fans fail, the detection is not performed in time, so that the thermal power generation unit can not be operated, the normal production is influenced, huge economic loss is further caused, the safe operation of a thermal power enterprise is even endangered, in addition, a plurality of booster fans can be used during use, and in the low-load stage of the unit, the booster fans still dizziness, the empty energy consumption of the motor is increased, the operation efficiency is low, and resources are wasted; in addition, after desulfurization and denitrification are finished, when qualified flue gas emission is needed, the booster fan is needed to discharge the flue gas inside the waste heat boiler, the internal resistance of the traditional waste heat boiler is large, and the electric quantity consumption of the booster fan is large, so that the waste is quite high. Therefore, it is necessary to design a novel power-saving system and method for desulfurization and denitrification of coke ovens.
Disclosure of Invention
The invention aims to provide a novel power saving system and method for desulfurization and denitrification of a coke oven, which can be used for carrying out safety detection on a booster fan, preventing economic loss or accidents caused by damage of the booster fan, reducing the electric quantity consumption of the booster fan and reducing the production cost.
In order to achieve the above object, the present invention provides the following solutions:
a novel power saving system for desulfurization and denitrification of a coke oven comprises: the intelligent flue gas desulfurization and denitration device comprises a first flue gas pipeline, a second flue gas pipeline, a third flue gas pipeline, a desulfurization and denitration mechanism, a waste heat boiler, a cooler, a third booster fan, a chimney, a booster fan detection module and a controller, wherein the first flue gas pipeline, the second flue gas pipeline and the third flue gas pipeline are connected in parallel, a boiler flue gas outlet is connected with a flue gas inlet of the first flue gas pipeline, a flue gas outlet of the second flue gas pipeline and a flue gas inlet of the third flue gas pipeline are connected with the desulfurization and denitration mechanism, the desulfurization and denitration mechanism is connected with a flue gas inlet of the waste heat boiler, the waste heat boiler is connected in parallel with the cooler, the flue gas outlet of the waste heat boiler is connected with the third booster fan, the third booster fan is connected with the chimney, the first booster fan and the second booster fan are respectively arranged on the first flue gas pipe and the second flue gas pipeline of the front end of the first booster fan, the first intelligent electric valve and the second intelligent electric valve are respectively arranged on the first flue gas pipe and the second booster fan, the third flue gas outlet of the third flue gas pipeline is connected with the intelligent electric valve, the intelligent electric valve is arranged on the third flue gas electric valve, the third booster fan is electrically connected with the intelligent electric valve, the intelligent electric valve is electrically-powered by the third booster fan, the intelligent electric valve is electrically connected with the third booster fan, and the intelligent electric valve is electrically-controlled by the intelligent electric valve.
Optionally, the booster fan detection module includes first temperature sensor, second temperature sensor, third temperature sensor and fan protection device, first temperature sensor sets up on booster fan's roller bearing for gather roller bearing's temperature, second temperature sensor sets up on booster fan's motor bearing, is used for gathering motor bearing's temperature, third temperature sensor sets up on booster fan's support bearing, is used for gathering support bearing's temperature, fan protection device sets up on booster fan for detect whether booster fan breaks down, and produce fault signal when booster fan breaks down and send to the controller, first temperature sensor, second temperature sensor, third temperature sensor and fan protection device electric connection the controller.
Optionally, the first intelligent electric valve, the second intelligent electric valve and the third intelligent electric valve are all provided with manual switches for realizing manual opening and closing.
The invention also provides a novel power saving method for desulfurization and denitrification of the coke oven, which is applied to the novel power saving system for desulfurization and denitrification of the coke oven, and comprises the following steps:
step 1: the flue gas flows into a first flue gas pipeline and a second flue gas pipeline through a flue gas outlet of the boiler, flows into a desulfurization and denitration mechanism through a first booster fan and a second booster fan, and enters a waste heat boiler after desulfurization and denitration, wherein part of the flue gas flows into a cooler for reducing the pressure in the waste heat boiler, and the flue gas in the waste heat boiler flows into a chimney through a third booster fan and is discharged into the atmosphere through the chimney;
step 2: the controller collects data detected by the booster fan detection module, and regulates and controls the state of the novel coke oven desulfurization and denitrification electricity-saving system according to the detected data;
step 3: the controller collects system load and regulates and controls states of the first booster fan and the second booster fan according to the system load.
Optionally, in step 2, the controller collects data detected by the booster fan detection module, and adjusts and controls the state of the novel coke oven desulfurization and denitrification power saving system according to the detected data, specifically:
the method comprises the steps that a booster fan detection module detects roller bearing temperatures of a first booster fan, a second booster fan and a third booster fan, a motor bearing temperature, a support bearing temperature and a fault state in real time and sends the roller bearing temperatures, the motor bearing temperature, the support bearing temperature and the fault state of the first booster fan and the second booster fan to a controller, the controller judges the states of the first booster fan and the second booster fan according to the roller bearing temperatures of the first booster fan and the second booster fan, the motor bearing temperature, the support bearing temperature and the fault state, if one or more of the roller bearing temperatures of the first booster fan, the motor bearing temperature and the support bearing temperature exceeds a preset threshold value, or a fan protection device of the second booster fan generates a fault signal, the controller controls the second booster fan to be closed, and controls a second intelligent electric valve to be closed, if any one or more of the roller bearing temperatures of the first booster fan and the second booster fan exceeds a preset threshold value, the controller controls the first booster fan to be closed, and if any one or more of the first booster fans keeps the first booster fan and the second booster fan to flow, and if the other booster fan is opened, the first booster fan is controlled to flow, and the second booster fan is controlled to be opened;
if one or more of the roller bearing temperature, the motor bearing temperature and the support bearing temperature of the third booster fan exceeds a preset threshold value, or a fan protection device of the third booster fan generates a fault signal, the second booster fan is judged to be faulty, and the controller controls the whole novel coke oven desulfurization and denitrification electricity-saving system to be closed.
Optionally, in step 3, the controller collects a system load, and adjusts and controls states of the first booster fan and the second booster fan according to the system load, specifically:
the controller collects the system load of the novel coke oven desulfurization and denitrification electricity-saving system, and if the system load is higher than a first preset threshold value, the controller controls the first booster fan, the first intelligent electric valve, the second booster fan and the second intelligent electric valve to be opened, and controls the third intelligent electric valve to be closed;
if the system load is lower than or equal to a first preset threshold value, the controller controls the first booster fan and the first intelligent electric valve or the second booster fan and the second intelligent electric valve to be opened, and controls the third intelligent electric valve to be closed;
if the system load is lower than or equal to a second preset threshold value, the controller controls the first booster fan, the first intelligent electric valve, the second booster fan and the second intelligent electric valve to be closed, and controls the third intelligent electric valve to be opened, wherein the first preset threshold value is larger than the second preset threshold value.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides a novel coke oven desulfurization and denitrification power saving system and a novel coke oven desulfurization and denitrification power saving method, wherein the system comprises a first flue gas pipeline, a second flue gas pipeline, a third flue gas pipeline, a desulfurization and denitrification mechanism, a waste heat boiler, a cooler, a third booster fan, a chimney, a booster fan detection module and a controller, wherein the first flue gas pipeline, the second flue gas pipeline and the third flue gas pipeline are arranged, the first flue gas pipeline and the second flue gas pipeline are respectively provided with the first booster fan and the second booster fan to realize the flow of flue gas, the third flue gas pipeline is also arranged, when the first booster fan and the second booster fan are in failure, the low-speed flow of flue gas can be realized through the third flue gas pipeline, the production stop caused by the damage of the booster fan can be placed, the system is provided with the cooler, the pressure in the waste heat boiler can be reduced, the system is provided with the booster fan detection module, the booster fan can be used for detecting the booster fan, and the operation of the system can be ensured; the method comprises the steps that smoke flows into a first smoke pipeline and a second smoke pipeline through a boiler smoke outlet respectively, flows into a desulfurization and denitration mechanism through a first booster fan and a second booster fan, and enters a waste heat boiler after desulfurization and denitration, wherein part of the smoke flows into a cooler for reducing the pressure in the waste heat boiler, the smoke in the waste heat boiler flows into a chimney through a third booster fan and is discharged into the atmosphere through the chimney, a controller collects data detected by a booster fan detection module, the state of a novel coke oven desulfurization and denitration power-saving system is regulated and controlled according to the detected data, a controller collects system load, the states of the first booster fan and the second booster fan are regulated and controlled according to the system load, and normal operation of production is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a novel coke oven desulfurization and denitrification electricity-saving system in an embodiment of the invention;
fig. 2 is a schematic flow chart of a novel desulfurization and denitrification electricity-saving method for a coke oven according to an embodiment of the invention.
Reference numerals: 1. a first flue gas line; 2. a second flue gas line; 3. a third flue gas line; 4. a desulfurization and denitrification mechanism; 5. a waste heat boiler; 6. a cooler; 7. a third booster fan; 8. and (5) a chimney.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a novel power saving system and method for desulfurization and denitrification of a coke oven, which can be used for carrying out safety detection on a booster fan, preventing economic loss or accidents caused by damage of the booster fan, reducing the electric quantity consumption of the booster fan and reducing the production cost.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the novel power saving system for desulfurization and denitrification of a coke oven provided by the embodiment of the invention comprises: the first flue gas pipeline 1, the second flue gas pipeline 2, the third flue gas pipeline 3, the desulfurization and denitrification mechanism 4, the waste heat boiler 5, the cooler 6, the third booster fan 7, the chimney 8, the booster fan detection module and the controller, the first flue gas pipeline 1, the second flue gas pipeline 2 and the third flue gas pipeline 3 are connected in parallel, the boiler flue gas outlet is connected with the flue gas inlets of the first flue gas pipeline 1, the second flue gas pipeline 2 and the third flue gas pipeline 3, the flue gas outlets of the first flue gas pipeline 1, the second flue gas pipeline 2 and the third flue gas pipeline 3 are connected with the desulfurization and denitrification mechanism 4, the desulfurization and denitrification mechanism 4 is connected with the flue gas inlet of the waste heat boiler 5, the waste heat boiler 5 is connected with the cooler 6 in parallel, the flue gas outlet of the waste heat boiler 5 is connected with the third booster fan 7, the third booster fan 7 is connected with the chimney 8, the intelligent flue gas desulfurization and denitration device is characterized in that a first booster fan and a second booster fan are respectively arranged on the first flue gas pipeline 1 and the second flue gas pipeline 2, a first intelligent electric valve and a second intelligent electric valve are respectively arranged on the first flue gas pipeline 1 and the second flue gas pipeline 2 of the front ends of the first booster fan and the second booster fan, a third intelligent electric valve is arranged on the third flue gas pipeline 3, booster fan detection modules are respectively arranged on the first booster fan, the second booster fan and the third booster fan 7, and the first booster fan, the second booster fan, the third booster fan detection modules, the cooler 6, the desulfurization and denitration mechanism 4, the first intelligent electric valve, the second intelligent electric valve and the third intelligent electric valve are electrically connected with the controller.
The booster fan detection module comprises a first temperature sensor, a second temperature sensor, a third temperature sensor and a fan protection device, wherein the first temperature sensor is arranged on a roller bearing of the booster fan and used for collecting the temperature of the roller bearing, the second temperature sensor is arranged on a motor bearing of the booster fan and used for collecting the temperature of the motor bearing, the third temperature sensor is arranged on a support bearing of the booster fan and used for collecting the temperature of the support bearing, the fan protection device is arranged on the booster fan and used for detecting whether the booster fan breaks down and generating a fault signal to be sent to a controller when the booster fan breaks down, and the first temperature sensor, the second temperature sensor, the third temperature sensor and the fan protection device are electrically connected with the controller.
The first intelligent electric valve, the second intelligent electric valve and the third intelligent electric valve are all provided with manual switches for realizing manual opening and closing, the first intelligent electric valve, the second intelligent electric valve and the third intelligent electric valve are all provided with conventional electric valves in the prior art, and the valves are further provided with manual switches for realizing manual opening and closing.
The device should also set up wireless communication module, for example WIFI module etc. and the controller passes through wireless communication module communication connection host computer, controls the controller through the host computer.
As shown in fig. 2, the invention also provides a novel power saving method for desulfurization and denitrification of the coke oven, which is applied to the novel power saving system for desulfurization and denitrification of the coke oven, and comprises the following steps:
step 1: the flue gas flows into a first flue gas pipeline and a second flue gas pipeline through a flue gas outlet of the boiler, flows into a desulfurization and denitration mechanism through a first booster fan and a second booster fan, and enters a waste heat boiler after desulfurization and denitration, wherein part of the flue gas flows into a cooler for reducing the pressure in the waste heat boiler, and the flue gas in the waste heat boiler flows into a chimney through a third booster fan and is discharged into the atmosphere through the chimney;
step 2: the controller collects data detected by the booster fan detection module, and regulates and controls the state of the novel coke oven desulfurization and denitrification electricity-saving system according to the detected data;
step 3: the controller collects system load and regulates and controls states of the first booster fan and the second booster fan according to the system load.
In step 2, the controller gathers the data that booster fan detection module detected, adjusts and controls the state of novel coke oven SOx/NOx control economize on electricity system according to the detection data, specifically does:
the method comprises the steps that a booster fan detection module detects roller bearing temperatures of a first booster fan, a second booster fan and a third booster fan, a motor bearing temperature, a support bearing temperature and a fault state in real time and sends the roller bearing temperatures, the motor bearing temperature, the support bearing temperature and the fault state of the first booster fan and the second booster fan to a controller, the controller judges the states of the first booster fan and the second booster fan according to the roller bearing temperatures of the first booster fan and the second booster fan, the motor bearing temperature, the support bearing temperature and the fault state, if one or more of the roller bearing temperatures of the first booster fan, the motor bearing temperature and the support bearing temperature exceeds a preset threshold value, or a fan protection device of the second booster fan generates a fault signal, the controller controls the second booster fan to be closed, and controls a second intelligent electric valve to be closed, if any one or more of the roller bearing temperatures of the first booster fan and the second booster fan exceeds a preset threshold value, the controller controls the first booster fan to be closed, and if any one or more of the first booster fans keeps the first booster fan and the second booster fan to flow, and if the other booster fan is opened, the first booster fan is controlled to flow, and the second booster fan is controlled to be opened;
if one or more of the roller bearing temperature, the motor bearing temperature and the support bearing temperature of the third booster fan exceeds a preset threshold value, or a fan protection device of the third booster fan generates a fault signal, the second booster fan is judged to be faulty, and the controller controls the whole novel coke oven desulfurization and denitrification electricity-saving system to be closed.
In step 3, the controller collects the system load, and adjusts and controls the states of the first booster fan and the second booster fan according to the system load, specifically:
the controller collects the system load of the novel coke oven desulfurization and denitrification electricity-saving system, and if the system load is higher than a first preset threshold value, the controller controls the first booster fan, the first intelligent electric valve, the second booster fan and the second intelligent electric valve to be opened, and controls the third intelligent electric valve to be closed;
if the system load is lower than or equal to a first preset threshold value, the controller controls the first booster fan and the first intelligent electric valve or the second booster fan and the second intelligent electric valve to be opened, and controls the third intelligent electric valve to be closed; if the system load is lower than or equal to a second preset threshold value, the controller controls the first booster fan, the first intelligent electric valve, the second booster fan and the second intelligent electric valve to be closed, and controls the third intelligent electric valve to be opened, wherein the first preset threshold value is larger than the second preset threshold value.
One embodiment of the invention is: before adding the cooler, the resistance of the waste heat boiler is measured to be about 2100-2200 pa; the Hertz of the desulfurization and denitrification booster fan fluctuates between 42.5 and 44, the electricity consumption is about 24000 to 25000KWh, and the electricity consumption of the hot standby fan is 0KWh;
after the cooler is added, the resistance of the waste heat boiler is measured to be about 700-800pa, in addition, the cooler can adopt a waste cooler or a waste hot standby fan, the purchasing cost can be reduced, the desulfurization and denitrification booster fan stably operates at about 37HZ, the hot standby fan stably operates at about 43HZ, the power consumption of the hot standby fan is increased by about 1500-1600KWh every day, the electric quantity of the booster fan is about 17000-18000, and the power consumption is saved by about 5500KWh every day.
The invention provides a novel coke oven desulfurization and denitrification power saving system and a novel coke oven desulfurization and denitrification power saving method, wherein the system comprises a first flue gas pipeline, a second flue gas pipeline, a third flue gas pipeline, a desulfurization and denitrification mechanism, a waste heat boiler, a cooler, a third booster fan, a chimney, a booster fan detection module and a controller, wherein the first flue gas pipeline, the second flue gas pipeline and the third flue gas pipeline are arranged, the first flue gas pipeline and the second flue gas pipeline are respectively provided with the first booster fan and the second booster fan to realize the flow of flue gas, the third flue gas pipeline is also arranged, when the first booster fan and the second booster fan are in failure, the low-speed flow of flue gas can be realized through the third flue gas pipeline, the production stop caused by the damage of the booster fan can be placed, the system is provided with the cooler, the pressure in the waste heat boiler can be reduced, the system is provided with the booster fan detection module, the booster fan can be used for detecting the booster fan, and the operation of the system can be ensured; the method comprises the steps that smoke flows into a first smoke pipeline and a second smoke pipeline through a boiler smoke outlet respectively, flows into a desulfurization and denitration mechanism through a first booster fan and a second booster fan, and enters a waste heat boiler after desulfurization and denitration, wherein part of the smoke flows into a cooler for reducing the pressure in the waste heat boiler, the smoke in the waste heat boiler flows into a chimney through a third booster fan and is discharged into the atmosphere through the chimney, a controller collects data detected by a booster fan detection module, the state of a novel coke oven desulfurization and denitration power-saving system is regulated and controlled according to the detected data, a controller collects system load, the states of the first booster fan and the second booster fan are regulated and controlled according to the system load, and normal operation of production is guaranteed.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. Novel coke oven desulfurization denitration economize on electricity system, characterized by, include: the intelligent flue gas desulfurization and denitration device comprises a first flue gas pipeline, a second flue gas pipeline, a third flue gas pipeline, a desulfurization and denitration mechanism, a waste heat boiler, a cooler, a third booster fan, a chimney, a booster fan detection module and a controller, wherein the first flue gas pipeline, the second flue gas pipeline and the third flue gas pipeline are connected in parallel, a boiler flue gas outlet is connected with a flue gas inlet of the first flue gas pipeline, a flue gas outlet of the second flue gas pipeline and a flue gas inlet of the third flue gas pipeline are connected with the desulfurization and denitration mechanism, the desulfurization and denitration mechanism is connected with a flue gas inlet of the waste heat boiler, the waste heat boiler is connected in parallel with the cooler, the flue gas outlet of the waste heat boiler is connected with the third booster fan, the third booster fan is connected with the chimney, the first booster fan and the second booster fan are respectively arranged on the first flue gas pipe and the second flue gas pipeline of the front end of the first booster fan, the first intelligent electric valve and the second intelligent electric valve are respectively arranged on the first flue gas pipe and the second booster fan, the third flue gas outlet of the third flue gas pipeline is connected with the intelligent electric valve, the intelligent electric valve is arranged on the third flue gas electric valve, the third booster fan is electrically connected with the intelligent electric valve, the intelligent electric valve is electrically-powered by the third booster fan, the intelligent electric valve is electrically connected with the third booster fan, and the intelligent electric valve is electrically-controlled by the intelligent electric valve.
2. The novel coke oven desulfurization and denitrification power saving system according to claim 1, wherein the booster fan detection module comprises a first temperature sensor, a second temperature sensor, a third temperature sensor and a fan protection device, wherein the first temperature sensor is arranged on a roller bearing of the booster fan and is used for collecting the temperature of the roller bearing, the second temperature sensor is arranged on a motor bearing of the booster fan and is used for collecting the temperature of the motor bearing, the third temperature sensor is arranged on a support bearing of the booster fan and is used for collecting the temperature of the support bearing, the fan protection device is arranged on the booster fan and is used for detecting whether the booster fan breaks down and generating a fault signal to be sent to a controller when the booster fan breaks down, and the first temperature sensor, the second temperature sensor, the third temperature sensor and the fan protection device are electrically connected with the controller.
3. The novel power-saving system for desulfurization and denitrification of coke ovens according to claim 1, wherein the first intelligent electric valve, the second intelligent electric valve and the third intelligent electric valve are all provided with manual switches for realizing manual opening and closing.
4. A novel power saving method for desulfurization and denitrification of a coke oven, which is applied to the novel power saving system for desulfurization and denitrification of the coke oven according to any one of claims 1 to 3, and is characterized by comprising the following steps:
step 1: the flue gas flows into a first flue gas pipeline and a second flue gas pipeline through a flue gas outlet of the boiler, flows into a desulfurization and denitration mechanism through a first booster fan and a second booster fan, and enters a waste heat boiler after desulfurization and denitration, wherein part of the flue gas flows into a cooler for reducing the pressure in the waste heat boiler, and the flue gas in the waste heat boiler flows into a chimney through a third booster fan and is discharged into the atmosphere through the chimney;
step 2: the controller collects data detected by the booster fan detection module, and regulates and controls the state of the novel coke oven desulfurization and denitrification electricity-saving system according to the detected data;
step 3: the controller collects system load and regulates and controls states of the first booster fan and the second booster fan according to the system load.
5. The novel power saving method for desulfurization and denitrification of coke oven according to claim 4, wherein in step 2, the controller collects data detected by the booster fan detection module, and adjusts and controls the state of the novel power saving system for desulfurization and denitrification of coke oven according to the detected data, specifically comprising:
the method comprises the steps that a booster fan detection module detects roller bearing temperatures of a first booster fan, a second booster fan and a third booster fan, a motor bearing temperature, a support bearing temperature and a fault state in real time and sends the roller bearing temperatures, the motor bearing temperature, the support bearing temperature and the fault state of the first booster fan and the second booster fan to a controller, the controller judges the states of the first booster fan and the second booster fan according to the roller bearing temperatures of the first booster fan and the second booster fan, the motor bearing temperature, the support bearing temperature and the fault state, if one or more of the roller bearing temperatures of the first booster fan, the motor bearing temperature and the support bearing temperature exceeds a preset threshold value, or a fan protection device of the second booster fan generates a fault signal, the controller controls the second booster fan to be closed, and controls a second intelligent electric valve to be closed, if any one or more of the roller bearing temperatures of the first booster fan and the second booster fan exceeds a preset threshold value, the controller controls the first booster fan to be closed, and if any one or more of the first booster fans keeps the first booster fan and the second booster fan to flow, and if the other booster fan is opened, the first booster fan is controlled to flow, and the second booster fan is controlled to be opened;
if one or more of the roller bearing temperature, the motor bearing temperature and the support bearing temperature of the third booster fan exceeds a preset threshold value, or a fan protection device of the third booster fan generates a fault signal, the second booster fan is judged to be faulty, and the controller controls the whole novel coke oven desulfurization and denitrification electricity-saving system to be closed.
6. The novel desulfurization and denitrification power saving method for the coke oven according to claim 4, wherein in the step 3, the controller collects system load and regulates and controls the states of the first booster fan and the second booster fan according to the system load, specifically:
the controller collects the system load of the novel coke oven desulfurization and denitrification electricity-saving system, and if the system load is higher than a first preset threshold value, the controller controls the first booster fan, the first intelligent electric valve, the second booster fan and the second intelligent electric valve to be opened, and controls the third intelligent electric valve to be closed;
if the system load is lower than or equal to a first preset threshold value, the controller controls the first booster fan and the first intelligent electric valve or the second booster fan and the second intelligent electric valve to be opened, and controls the third intelligent electric valve to be closed;
if the system load is lower than or equal to a second preset threshold value, the controller controls the first booster fan, the first intelligent electric valve, the second booster fan and the second intelligent electric valve to be closed, and controls the third intelligent electric valve to be opened, wherein the first preset threshold value is larger than the second preset threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211013894.9A CN115382372B (en) | 2022-08-23 | 2022-08-23 | Novel power saving system and method for desulfurization and denitrification of coke oven |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008052465A1 (en) * | 2006-10-25 | 2008-05-08 | Baoshan Iron & Steel Co., Ltd. | A sintered flue gas wet desulfurizing and dedusting process |
| CN101709879A (en) * | 2009-09-27 | 2010-05-19 | 西安交通大学 | System for deep cooling and waste heat recovery of smoke gas in boiler |
| CN102087021A (en) * | 2010-12-20 | 2011-06-08 | 华北电力大学 | Integrated system for utilizing residual heat of boiler smoke and removing sulfur |
| CN205495310U (en) * | 2016-03-11 | 2016-08-24 | 西安华江环保科技股份有限公司 | Coke oven flue desulphurization of exhaust gas deNOx systems |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008052465A1 (en) * | 2006-10-25 | 2008-05-08 | Baoshan Iron & Steel Co., Ltd. | A sintered flue gas wet desulfurizing and dedusting process |
| CN101709879A (en) * | 2009-09-27 | 2010-05-19 | 西安交通大学 | System for deep cooling and waste heat recovery of smoke gas in boiler |
| CN102087021A (en) * | 2010-12-20 | 2011-06-08 | 华北电力大学 | Integrated system for utilizing residual heat of boiler smoke and removing sulfur |
| CN205495310U (en) * | 2016-03-11 | 2016-08-24 | 西安华江环保科技股份有限公司 | Coke oven flue desulphurization of exhaust gas deNOx systems |
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