CN113916577A - Movable boiler energy efficiency discharge performance experiment platform - Google Patents
Movable boiler energy efficiency discharge performance experiment platform Download PDFInfo
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- CN113916577A CN113916577A CN202111202074.XA CN202111202074A CN113916577A CN 113916577 A CN113916577 A CN 113916577A CN 202111202074 A CN202111202074 A CN 202111202074A CN 113916577 A CN113916577 A CN 113916577A
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Abstract
The invention discloses a movable energy efficiency discharge performance experiment platform for a boiler, which comprises a truck body, wherein a recirculation fan, an air blower, a combustor, a hot water boiler body, water treatment equipment, a water tank, a circulating water pump, a combined type energy saver, an air preheater, a water supplementing pump and a cooling tower are respectively arranged on the truck body, one end of the recirculation fan is communicated with the combustor, one end of the hot water boiler body is communicated with the combustor, one end of the air blower is communicated with the air preheater, the other end of the hot water boiler body is communicated with the combined type energy saver through a pipeline, the top of the combined type energy saver is communicated with the water supplementing pump through a pipeline, and a valve is arranged on the pipeline. In the invention, a water system between the hot water boiler and the cooling tower operates in a closed loop manner, and the loss of medium water in the operation process is less; the flue gas recirculation fan is controlled in a frequency conversion mode, so that the change of different air quantities between 0 and 30 percent of the flue gas recirculation rate can be realized; the energy efficiency environmental protection test of the boiler can be carried out in different altitude areas.
Description
Technical Field
The invention relates to the technical field of boiler energy efficiency and atmospheric pollutant emission control, in particular to a movable boiler energy efficiency emission performance experiment platform.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy.
The boiler is a water container heated on fire, a furnace is a place where fuel is combusted, and the boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, can also be converted into mechanical energy through a steam power device, and then is converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, is mainly used for life, and has a small amount of application in industrial production. The boiler for generating steam is called as steam boiler and is mainly used for thermal power stations, ships, locomotives and industrial and mining enterprises.
The plateau area has the environmental characteristics of high altitude, low air pressure, thin air and the like, the atmospheric pressure is reduced by about 10 kilopascals, the air density is reduced by about 0.1 kilogram per cubic meter and the oxygen content is reduced by about 0.3 kilogram per cubic meter along with the elevation of the altitude of 1000 meters, and the problems of insufficient fuel combustion, increased smoke flow resistance, reduced thermal efficiency, insufficient output and the like can be caused when the boiler operates in the plateau area due to the factors, so that a movable boiler energy efficiency discharge performance experiment platform is provided.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a movable energy efficiency discharge performance experiment platform of a boiler, and aims to solve the problems in the background art.
The invention provides the following technical scheme:
a movable energy efficiency discharge performance experiment platform for a boiler comprises a truck body, wherein a recirculation fan, a blower, a burner, a hot water boiler body, water treatment equipment, a water tank, a circulating water pump, a combined energy saver, an air preheater, a water supplementing pump and a cooling tower are respectively arranged on the truck body, one end of the recirculation fan is communicated with the burner, one end of the hot water boiler body is communicated with the burner, one end of the blower is communicated with the air preheater, the other end of the hot water boiler body is communicated with the combined energy saver through a pipeline, the top of the combined energy saver is communicated with the water replenishing pump through a pipeline, and the pipeline is provided with a valve, the other end of the water replenishing pump is communicated with the water tank, the top of the combined type energy saver is communicated with the circulating water pump through the pipeline, the pipeline is provided with a valve, and the other end of the circulating water pump is communicated with the cooling tower.
Preferably, recirculation fan's other end intercommunication has the connecting pipe, the other end of connecting pipe and the flue on the combination formula economizer and around both sides flue intercommunication, and be provided with five-stage flue gas valve on the connecting pipe, pipeline and connecting pipe intercommunication between boiler body and the combination formula economizer, and be provided with one-level flue gas valve on the pipeline, the one end that combination formula economizer is close to the connecting pipe is passed through pipeline and connecting pipe intercommunication, and the quantity of pipeline is three, is provided with second grade flue gas valve, tertiary flue gas valve and level four flue gas valve on the pipeline respectively.
Preferably, the using method comprises the following steps:
(1) supplying water to a full water state in the system, supplying water to the full water state by the water tank, opening the truck body to a testable position with an altitude of 1500 m, and selecting a liquefied natural gas vehicle matched with the experiment table;
(2) before the experiment, the full-open state of a water inlet valve and a water outlet valve of the hot water boiler body is checked, a water supplementing pump is started to supplement water until the system is in a full-water state, and the water supplementing pump is closed after gas in a system pipeline is exhausted;
(3) the circulating water pump is started to run normally without any noise;
(4) starting a cold water system in the cooling tower to confirm that the cold water system operates normally;
(5) starting the hot water boiler body, setting the load of a burner at 30%, and recording the gas pressure, the gas temperature and the gas flow at the moment;
(6) after the hot water boiler body stably operates for 1 hour, external equipment is adopted to measure the circulating water flow, the water inlet temperature, the water outlet temperature, the smoke exhaust temperature and the related data of smoke components of the hot water boiler body;
(7) opening a first-stage flue gas valve, closing a second-stage flue gas valve, a third-stage flue gas valve, a fourth-stage flue gas valve and a fifth-stage flue gas valve, opening a recirculation fan, and observing the outlet of the hot water boiler bodyThe change of water temperature, exhaust gas temperature and oxygen, carbon monoxide and nitrogen oxide in the components of the flue gas can ensure that the nitrogen oxide is reduced to 80mg/m under the condition of ensuring that the oxygen content and the carbon monoxide in the flue gas do not change obviously and the boiler does not vibrate obviously during operation3Recording the related data of the circulating water flow, the inlet water temperature, the outlet water temperature, the exhaust gas temperature and the smoke components of the hot water boiler body;
(8) continuously increasing the frequency of the recirculation fan, observing the water outlet temperature of the hot water boiler body, the smoke discharge temperature and the changes of oxygen, carbon monoxide and nitrogen oxide in smoke components, and reducing the nitrogen oxide to 50mg/m under the conditions of ensuring no obvious changes of oxygen and carbon monoxide in the smoke and no obvious vibration in the operation of the boiler3、30mg/m3When the water boiler is used, the circulating water flow, the water inlet temperature, the water outlet temperature, the smoke exhaust temperature and the related data of smoke components of the water boiler body are recorded respectively, and when the smoke components are recorded, a second-stage smoke valve is opened, other smoke valves are closed, a third-stage smoke valve is opened, other smoke valves are closed, a fourth-stage smoke valve is opened, other smoke valves are closed, a fifth-stage smoke valve is opened, and other smoke valves are closed in sequence;
(9) increasing the load of the burner to be set at 40%, 50%, 60%, 70%, 80%, 90% and 100%, recording the gas pressure, the gas temperature and the gas flow at the moment, and repeating the relevant contents of the steps 6, 7, 8 and 9;
(10) and sorting all the data of the test, and counting and researching the relation between the energy efficiency of the boiler and the emission of atmospheric pollutants at different altitudes on the premise of the same fuel consumption.
The invention provides a movable energy efficiency discharge performance experiment platform for a boiler, which has the following beneficial effects:
1. in the invention, the water system between the hot water boiler and the cooling tower operates in a closed loop mode, and the loss of medium water in the operation process is less.
2. The flue gas recirculation fan is controlled in a frequency conversion mode, and the change of different air quantities between 0 and 30 percent of flue gas recirculation rate can be realized.
3. The invention can carry out the environment-friendly test of the energy efficiency of the boiler in different altitudes.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. a burner; 2. a hot water boiler body; 3. a combined energy saver; 4. a blower; 5. an air preheater; 6. a water tank; 7. a water replenishing pump; 8. a water treatment device; 9. a truck body; 10. a cooling tower; 11. a water circulating pump; 12. a fifth stage flue gas valve; 13. a four-stage flue gas valve; 14. a third stage flue gas valve; 15. a secondary flue gas valve; 16. a connecting pipe; 17. a first stage flue gas valve; 18. a recirculation fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
a movable energy efficiency discharge performance experiment platform for a boiler comprises a truck body 9, wherein a recirculation fan 18, an air blower 4, a combustor 1, a hot water boiler body 2, water treatment equipment 8, a water tank 6, a circulating water pump 11, a combined energy saver 3, an air preheater 5, a water replenishing pump 7 and a cooling tower 10 are respectively arranged on the truck body 9, one end of the recirculation fan 18 is communicated with the combustor 1, one end of the hot water boiler body 2 is communicated with the combustor 1, one end of the air blower 4 is communicated with the air preheater 5, the other end of the hot water boiler body 2 is communicated with the combined energy saver 3 through a pipeline, the top of the hot water boiler body 2 is communicated with the water replenishing pump 7 through a pipeline, a valve is arranged on the pipeline, the other end of the water replenishing pump 7 is communicated with the water tank 6, the top of the hot water boiler body 2 is communicated with the circulating water pump 11 through a pipeline, and a valve is arranged on the pipeline, the other end of the circulating water pump 11 communicates with the cooling tower 10.
The using method comprises the following steps:
1. supplementing water to a full water state in the system, supplementing water to the full water state by the water tank 6, opening the truck body 9 to a testable position with an altitude of 1500 m, and selecting a liquefied natural gas vehicle matched with the experiment table;
2. before the experiment, the full open state of a water inlet valve and a water outlet valve of the hot water boiler body 2 is checked, a water supplementing pump 7 is started to supplement water until the system is in a full water state, and the water supplementing pump 7 is closed after gas in a system pipeline is exhausted;
3. the circulating water pump 11 is started, the circulating water pump 11 runs normally, and no noise exists;
4. starting a cold water system in the cooling tower 10 to confirm that the cold water system operates normally;
5. starting the hot water boiler body 2, setting the load of the burner 1 at 30%, and recording the gas pressure, the gas temperature and the gas flow at the moment;
6. after the hot water boiler body 2 stably operates for 1 hour, external equipment is adopted to measure the circulating water flow, the water inlet temperature, the water outlet temperature, the smoke exhaust temperature and the related data of smoke components of the hot water boiler body 2;
7. opening a first-stage flue gas valve 17, closing a second-stage flue gas valve 15, a third-stage flue gas valve 14, a fourth-stage flue gas valve 13 and a fifth-stage flue gas valve 12, opening a recirculation fan 18, observing the change of the water outlet temperature, the smoke exhaust temperature and the oxygen, carbon monoxide and nitrogen oxides in the flue gas components of the hot water boiler body 2, and reducing the nitrogen oxides to 80mg/m under the conditions of ensuring that the oxygen and the carbon monoxide in the flue gas have no obvious change and the boiler operates without obvious vibration3Recording the related data of the circulating water flow, the inlet water temperature, the outlet water temperature, the exhaust gas temperature and the smoke components of the hot water boiler body 2;
8. the frequency of the recirculation fan 18 is continuously increased, the temperature of the water outlet of the hot water boiler body 2, the temperature of the discharged smoke and the changes of oxygen, carbon monoxide and nitrogen oxide in smoke components are observed, and the nitrogen oxide is reduced to 50mg/m under the condition of ensuring that the oxygen content and the carbon monoxide in the smoke do not change obviously and the boiler does not vibrate obviously during operation3、30mg/m3During the process, the related data of the circulating water flow, the inlet water temperature, the outlet water temperature, the exhaust gas temperature and the smoke components of the hot water boiler body 2 are respectively recorded, and when the smoke components are recorded, the data are recorded according to the valuesOpening a second-stage flue gas valve 15, closing other flue gas valves, opening a third-stage flue gas valve 14, closing other flue gas valves, opening a fourth-stage flue gas valve 13, closing other flue gas valves, opening a fifth-stage flue gas valve 12, and closing other flue gas valves;
9. increasing the load of the combustor 1 to be set at 40%, 50%, 60%, 70%, 80%, 90% and 100%, recording the gas pressure, the gas temperature and the gas flow at the moment, and repeating the relevant contents of the steps 6, 7, 8 and 9;
10. all data of the test are collated, and the relation between the energy efficiency of the boiler and the emission of atmospheric pollutants at different altitudes is counted and researched on the premise of the same fuel consumption
The natural gas generates high-temperature flue gas through the combustion of a diffusion combustion mode, and the flue gas exchanges heat with the hot water boiler body 2 and the combined energy saver 3 and then emits heat to be discharged.
The diffusion combustion mode is a combustion mode that gas and air are respectively fed into a combustion chamber, the gas and smoke in the air are diffused, mixed and combusted at the same time, and the test device is matched with a blowing type diffusion combustor and comprises an independent air blower 4, a combustion head, a control system and a recirculation fan 18.
The hot water boiler body 2 adopts a horizontal internal combustion arrangement mode, and fire observation holes, temperature measuring point holes and pressure measuring point holes which are connected with the corrugated furnace pipe are arranged on two side surfaces of the boiler shell.
The movable energy efficiency discharge experiment platform adopts a DCS control system, the combustor 1 is controlled by full-automatic proportion adjustment, and the recirculation fan 18 is controlled by frequency conversion.
The first embodiment is as follows:
1. supplying water to a full water state in the system, supplying water to the full water state in the water tank 6, and starting the test movable truck to a position with an altitude of 2000 m and capable of being tested, wherein 380V power electricity is locally provided, and the test movable truck is selected with a liquefied natural gas vehicle matched with a laboratory bench;
2. after the relevant content of the step 2-4 is repeated, the natural gas consumption is adjusted to the state of the step 5, under the condition that the frequency of the combustor 1 and the blower 4 is not changed, the content of oxygen and carbon monoxide in the smoke of the hot water boiler body 2 is confirmed, if the data is basically consistent with the content of oxygen and carbon monoxide in the smoke in the step 5, the relevant content of the steps 6, 7 and 8 is repeated, if the content of oxygen in the smoke is obviously lower than that in the step 5, and the content of carbon monoxide in the smoke is obviously higher than that in the step 5, the frequency of the blower 4 needs to be increased until the gas components in the smoke are similar to those in the smoke in the step 5, and the work of the steps 6, 7 and 8 is repeated;
3. and (4) respectively adjusting the operating parameters of the hot water boiler body 2 according to the gas flow in the step (9), and operating and recording related data according to the step (2).
Example two:
(1) the test mobile truck is driven to the elevation of 2500 m, 3000 m, 3500 m, 4000 m and 4500 m (the elevation is determined according to the actual situation on site, and the gradient of change is ensured to be consistent as much as possible), the test position (380V power electricity is locally provided) can be tested, and the test mobile truck is selected with a liquefied natural gas vehicle matched with the experiment table;
(2) and repeating the relevant steps in the first embodiment and recording the relevant quantity.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (3)
1. Movable boiler efficiency discharges performance experiment platform, including freight train body (9), its characterized in that: the truck is characterized in that a recirculation fan (18), an air blower (4), a combustor (1), a hot water boiler body (2), water treatment equipment (8), a water tank (6), a circulating water pump (11), a combined energy saver (3), an air preheater (5), a water supplementing pump (7) and a cooling tower (10) are respectively arranged on the truck body (9), one end of the recirculation fan (18) is communicated with the combustor (1), one end of the hot water boiler body (2) is communicated with the combustor (1), one end of the air blower (4) is communicated with the air preheater (5), the other end of the hot water boiler body (2) is communicated with the combined energy saver (3) through a pipeline, the top of the combined energy saver (3) is communicated with the water supplementing pump (7) through a pipeline, a valve is arranged on the pipeline, the other end of the water supplementing pump (7) is communicated with the water tank (6), the top of the combined energy saver (3) is communicated with a circulating water pump (11) through a pipeline, a valve is arranged on the pipeline, and the other end of the circulating water pump (11) is communicated with a cooling tower (10).
2. The movable energy efficiency emission performance experiment platform of the boiler according to claim 1, characterized in that: the other end intercommunication of recirculation fan (18) has connecting pipe (16), the other end of connecting pipe (16) and the flue on the combination formula economizer (3) and both sides flue intercommunication around and, and be provided with five-stage flue gas valve (12) on connecting pipe (16), pipeline and connecting pipe (16) intercommunication between boiler body (2) and combination formula economizer (3), and be provided with one-level flue gas valve (17) on the pipeline, pipeline and connecting pipe (16) intercommunication are passed through to the one end that combination formula economizer (3) are close to connecting pipe (16), and the quantity of pipeline is three, is provided with second grade flue gas valve (15), tertiary flue gas valve (14) and level four flue gas valve (13) on the pipeline respectively.
3. The movable energy efficiency emission performance experiment platform of the boiler according to claim 1, characterized in that: the using method comprises the following steps:
(1) supplying water to a full water state in the system, supplying water to the full water state by the water tank (6), opening the truck body (9) to a testable position with an altitude of 1500 m, and selecting the truck body and the liquefied natural gas vehicle matched with the experiment table;
(2) before the experiment, the full open state of a water inlet valve and a water outlet valve of the hot water boiler body (2) is checked, a water supplementing pump (7) is started to supplement water until the system is in a full water state, and the water supplementing pump (7) is closed after gas in a system pipeline is emptied;
(3) the circulating water pump (11) is started, the circulating water pump (11) runs normally, and no noise exists;
(4) starting a cold water system in the cooling tower (10) to confirm that the cold water system operates normally;
(5) starting the hot water boiler body (2), setting the load of the burner (1) at 30%, and recording the gas pressure, the gas temperature and the gas flow at the moment;
(6) after the hot water boiler body (2) stably operates for 1 hour, external equipment is adopted to measure the circulating water flow, the water inlet temperature, the water outlet temperature, the smoke exhaust temperature and the related data of smoke components of the hot water boiler body (2);
(7) opening a first-stage flue gas valve (17), closing a second-stage flue gas valve (15), a third-stage flue gas valve (14), a fourth-stage flue gas valve (13) and a fifth-stage flue gas valve (12), opening a recirculation fan (18), observing the changes of the water outlet temperature, the smoke exhaust temperature and oxygen, carbon monoxide and nitrogen oxide in flue gas components of the hot water boiler body (2), ensuring that the oxygen content and the carbon monoxide in the flue gas do not change obviously and the boiler operates without obvious vibration, and reducing the nitrogen oxide to 80mg/m3During the operation, the related data of the circulating water flow, the inlet water temperature, the outlet water temperature, the exhaust gas temperature and the smoke components of the hot water boiler body (2) are recorded;
(8) continuously increasing the frequency of the recirculation fan (18), observing the outlet water temperature and the exhaust gas temperature of the hot water boiler body (2), and the changes of oxygen, carbon monoxide and nitrogen oxide in the components of the flue gas, and reducing the nitrogen oxide to 50mg/m under the condition of ensuring that the oxygen content and the carbon monoxide in the flue gas do not change obviously and the boiler does not vibrate obviously during operation3、30mg/m3When the water boiler is used, the circulating water flow, the inlet water temperature, the outlet water temperature, the exhaust gas temperature and the relevant data of the flue gas components of the water boiler body (2) are recorded respectively, and when the flue gas components are recorded, a second-stage flue gas valve (15) is opened, other flue gas valves are closed, a third-stage flue gas valve (14) is opened, other flue gas valves are closed, a fourth-stage flue gas valve (13) is opened, other flue gas valves are closed, a fifth-stage flue gas valve (12) is opened, and other flue gas valves are closed in sequence;
(9) increasing the load of the hot water boiler body (2) to be set at 40%, 50%, 60%, 70%, 80%, 90% and 100%, recording the gas pressure, the gas temperature and the gas flow at the moment, and repeating the relevant contents of the steps 6, 7, 8 and 9;
(10) and sorting all the data of the test, and counting and researching the relation between the energy efficiency of the boiler and the emission of atmospheric pollutants at different altitudes on the premise of the same fuel consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111202074.XA CN113916577A (en) | 2021-10-15 | 2021-10-15 | Movable boiler energy efficiency discharge performance experiment platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111202074.XA CN113916577A (en) | 2021-10-15 | 2021-10-15 | Movable boiler energy efficiency discharge performance experiment platform |
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| CN113916577A true CN113916577A (en) | 2022-01-11 |
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| CN202111202074.XA Pending CN113916577A (en) | 2021-10-15 | 2021-10-15 | Movable boiler energy efficiency discharge performance experiment platform |
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2021
- 2021-10-15 CN CN202111202074.XA patent/CN113916577A/en active Pending
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