CN115717710A - Flue gas control system for collaborative incineration of household garbage and sludge - Google Patents
Flue gas control system for collaborative incineration of household garbage and sludge Download PDFInfo
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- CN115717710A CN115717710A CN202211577251.7A CN202211577251A CN115717710A CN 115717710 A CN115717710 A CN 115717710A CN 202211577251 A CN202211577251 A CN 202211577251A CN 115717710 A CN115717710 A CN 115717710A
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Abstract
The application relates to the technical field of waste gas treatment, and discloses a flue gas control system for collaborative incineration of household garbage and sludge, which comprises an incinerator, a sludge conveying device, an auxiliary combustion device, a flue gas purification device, a temperature sensor, a first flue gas online monitor and a controller, wherein the temperature sensor is arranged on the incinerator; the sludge conveying device, the auxiliary combustion device, the temperature sensor and the first flue gas online monitor are respectively electrically connected with the controller. The utility model provides a flue gas control system for domestic waste burns with mud is in coordination, through the condition such as the content of particulate matter in real-time supervision burning condition, flue gas composition, the flue gas, the throwing frequency of adjustment sludge conveying equipment and the quantity that auxiliary combustion device provided combustion-supporting gas (like natural gas etc.), makes and maintains the best combustion condition in the burning furnace, makes mud and domestic waste can burn completely, guarantees that harmful gas burns out and reaches emission standard.
Description
Technical Field
The application relates to the technical field of waste gas treatment, and mainly relates to a flue gas control system for collaborative incineration of household garbage and sludge.
Background
The sludge is composed of organic matters and inorganic matters and is a complex substance with higher water content. The general sludge contains 70-75% of free water, 20-25% of flocculent water, 1% of capillary water and bound water. Sludge incineration is a common sludge disposal method, which can destroy all organic matters, kill all pathogens, and reduce the volume of sludge to the maximum extent, and the relative water content of incineration residues is about 75% of the original volume of sludge which is only about 10%. Sludge incineration is not only directly treated by sludge incineration, but also can be carried out by various methods such as incineration in a garbage incinerator, incineration in an industrial furnace, incineration in a coal-fired power plant, independent incineration of sludge and the like. At present, most of domestic garbage incinerators adopt advanced technology, are provided with perfect smoke treatment devices, can burn domestic garbage mixed with sludge in a certain proportion, and the mixing proportion can reach about 30 percent generally. However, the direct introduction of high-moisture sludge into the incinerator can cause some adverse effects on the combustion process, such as reduction of the combustion temperature, delay of the ignition process, fluctuation of the temperature in the incinerator, difficulty in controlling the flue gas purification, and the like.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the present application aims to provide a flue gas control system for collaborative incineration of domestic garbage and sludge, and aims to solve the problem that flue gas purification is not easy to control when a domestic garbage incinerator directly burns sludge in a blending manner.
The technical scheme of the application is as follows:
a flue gas control system for the collaborative incineration of household garbage and sludge comprises an incinerator, a sludge conveying device, an auxiliary combustion device, a flue gas purification device, a temperature sensor, a first flue gas online monitor and a controller, wherein the temperature sensor is arranged on the incinerator;
the incinerator is provided with a sludge throwing inlet, an air supply outlet and a flue gas discharge pipeline, the sludge throwing inlet is connected with the sludge conveying device, the air supply outlet is connected with the auxiliary combustion device, and the temperature sensor is arranged in the incinerator; the flue gas purification device is provided with a flue gas inlet and a flue gas discharge outlet, the flue gas inlet is communicated with the flue gas discharge pipeline, and the first flue gas online monitor is arranged at the flue gas inlet;
the sludge conveying device, the auxiliary combustion device, the temperature sensor and the first flue gas on-line monitor are respectively electrically connected with the controller.
The utility model provides a flue gas control system for domestic waste burns with mud is in coordination, through the condition such as the content of particulate matter in real-time supervision burning condition, flue gas composition, the flue gas, the throwing frequency of adjustment sludge conveying equipment and the quantity that auxiliary combustion device provided combustion-supporting gas (like natural gas etc.), makes and maintains the best combustion condition in the burning furnace, makes mud and domestic waste can burn completely, guarantees that harmful gas burns out and reaches emission standard.
A flue gas control system for domestic waste and sludge are burnt in coordination, wherein, flue gas purification device is including consecutive sack cleaner, active carbon adsorber, ozone denitration deodorizer, spray column, defroster.
The flue gas is dedusted by a bag-type deduster, then the activated carbon is used for adsorbing harmful substances such as dioxin, heavy metals and the like by an activated carbon adsorber, and then organic odor is decomposed by ozone by an ozone denitration deodorizer and NO is oxidized into NO x And finally, removing the mist and the water by a demister, and discharging.
A flue gas control system for domestic waste and sludge are burnt in coordination, wherein, the flue gas emission exit is provided with second flue gas on-line monitoring appearance, second flue gas on-line monitoring appearance with the controller electricity is connected.
A flue gas control system for domestic waste burns with mud is in coordination, wherein, first flue gas on-line monitoring appearance includes smoke and dust concentration monitor, HCl concentration monitor, CO concentration detector, SO 2 Concentration monitor, NO x Concentration monitor, said soot concentration monitor, said HCl concentration monitor, said CO concentration detector, said SO 2 Concentration monitor, said NO x The concentration monitor is electrically connected with the controller.
The flue gas control system for the collaborative incineration of the household garbage and the sludge is characterized in that the monitoring frequency of the first flue gas on-line monitor is acquired every 30 minutes.
The flue gas control system for the collaborative incineration of the household garbage and the sludge, wherein the second flue gas online monitor comprises a smoke concentration monitor, an HCl concentration monitor, a CO concentration detector and SO 2 Concentration monitor, NO x Concentration monitoringSaid soot concentration monitor, said HCl concentration monitor, said CO concentration detector, said SO 2 Concentration monitor, said NO x The concentration monitor is electrically connected with the controller.
The flue gas control system for the collaborative incineration of the household garbage and the sludge is characterized in that the monitoring frequency of the second flue gas on-line monitor is acquired every 30 minutes.
The flue gas control system for the cooperative incineration of the household garbage and the sludge further comprises a sludge drying treatment device, and the sludge drying treatment device is connected with the sludge conveying device.
A flue gas control system for domestic waste and mud burn in coordination, wherein, a flue gas control system for domestic waste and mud burn in coordination still includes exhaust-heat boiler, exhaust-heat boiler respectively with the fume emission pipeline with sludge drying processing apparatus connects, will follow the heat that the fume emission pipeline obtained is used for right sludge carries out the mummification and handles.
The flue gas control system for the domestic garbage and sludge collaborative incineration is characterized by further comprising a sludge conditioner throwing device, wherein the sludge conditioner throwing device is arranged on the sludge conveying device, and the sludge conditioner throwing device is electrically connected with the controller.
Has the advantages that: the utility model provides a flue gas control system for domestic waste burns with mud is in coordination, through the condition such as the content of particulate matter in real-time supervision burning condition, flue gas composition, the flue gas, the throwing frequency of adjustment sludge conveying equipment and the quantity that auxiliary combustion device provided combustion-supporting gas (like natural gas etc.), makes and maintains the best combustion condition in the burning furnace, makes mud and domestic waste can burn completely, guarantees that harmful gas burns out and reaches emission standard.
Detailed Description
The application provides a flue gas control system that is used for domestic waste and mud to burn in coordination, for making the purpose, technical scheme and the effect of this application clearer, make clear more, further detailed description to this application below. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
Because the sludge treatment scale is difficult to form obvious economic benefits, and domestic waste incineration power plants are almost configured in all cities, the sludge and domestic waste incineration cooperative treatment is an excellent choice for saving construction cost, increasing the benefits of the domestic waste incineration power plants and treating the sludge in a large scale. In addition, in order to meet the requirement of ultralow emission, the current household garbage incineration power plants are provided with relatively complete garbage incineration flue gas treatment systems, and the household garbage mainly contains inorganic substances such as plastics, wood fibers, broken stones and glass, a large amount of water and organic substances with the water content less than or equal to 50%, and also contains heavy metals such as mercury and germs. The pollutants in the smoke generated by burning the household garbage comprise 4 types: soot, particulates and fly ash; acid gases (e.g. HCl, SO) 2 、NO x ) (ii) a Toxic heavy metals (e.g., pb, cd, hg, cr); halogenated compounds such as dioxins. The sludge is composed of organic matters and inorganic matters and is a complex substance with higher water content, and main pollutants of smoke generated in incineration are the same as those of domestic garbage, so that the conventional smoke treatment equipment of a domestic garbage incineration power plant can be used for treating the smoke generated in sludge incineration theoretically. However, because the water content of the sludge is generally about 80%, the water content of the sludge is only reduced to 65% at most after the sludge is mechanically dehydrated in a sewage plant, and the high-moisture sludge directly enters the incinerator to have some adverse effects on the combustion process, such as reduction of the combustion temperature, delay of the ignition process, fluctuation of the temperature in the incinerator, difficulty in control of flue gas purification and the like, the existing flue gas treatment equipment of the domestic waste incineration power plant may have overload work, so that the production safety cannot be ensured, and the emission index cannot be controlled within a controllable range. Therefore, in the application, a flue gas control system for collaborative incineration of household garbage and sludge is provided, by monitoring the incineration conditions, flue gas components, the content of particulate matters in flue gas and the like in real time, the adding frequency of a sludge conveying device is adjusted, and the amount of combustion-supporting gas provided by an auxiliary combustion device (such as daily consumption) is adjustedNatural gas, etc.) to maintain the best combustion condition in the incinerator, so that the sludge and the domestic garbage can be completely combusted, and the harmful gas can be completely combusted and reach the emission standard.
The flue gas control system for the cooperative incineration of the household garbage and the sludge comprises an incinerator, a sludge conveying device, an auxiliary combustion device, a flue gas purification device, a temperature sensor, a first flue gas online monitor and a controller;
the incinerator is provided with a sludge throwing inlet, an air supply outlet and a flue gas discharge pipeline, the sludge throwing inlet is connected with the sludge conveying device, the air supply outlet is connected with the auxiliary combustion device, and the temperature sensor is arranged in the incinerator; the flue gas purification device is provided with a flue gas inlet and a flue gas discharge outlet, the flue gas inlet is communicated with a flue gas discharge pipeline, and the first flue gas online monitor is arranged at the flue gas inlet;
the sludge conveying device, the auxiliary combustion device, the temperature sensor and the first flue gas on-line monitor are respectively and electrically connected with the controller.
Through set up temperature sensor in burning furnace, can the burning temperature in the real-time supervision burning furnace to send temperature data to the controller in real time, through set up first flue gas on-line monitoring appearance at flue gas entrance department, the concentration of various pollutants in can the real-time supervision flue gas, and send flue gas composition data to the controller in real time. When the temperature is lower than the preset value or the smoke component data is higher than the preset value, the controller sends an instruction to the sludge conveying device to reduce the adding frequency of the sludge, reduce the mixed combustion amount of the sludge, send an instruction to the auxiliary combustion device to increase the consumption of combustion-supporting gas, supplement the combustion-supporting gas required by the complete combustion of the sludge and the household garbage, and maintain the optimal combustion condition in the incinerator.
It should be noted that, this application is used for domestic waste and mud to burn flue gas control system in coordination is based on improving on the existing equipment of domestic waste incineration plant, and the burning furnace, mud conveyor, supplementary burner, flue gas purification device, temperature sensor, the online monitor of first flue gas that relate to in this application are existing equipment, and this is not repeated. Preferably, the smokeThe gas purification device comprises a bag-type dust remover, an active carbon adsorber, an ozone denitration deodorizer, a spray tower and a demister which are sequentially connected, smoke is firstly dedusted by the bag-type dust remover, then the active carbon adsorber is used for adsorbing harmful substances such as dioxin, heavy metals and the like by active carbon, and then the ozone denitration deodorizer is used for decomposing organic odor by ozone and oxidizing NO into NO x Then, dust, acidic substances and the like are washed out by alkali through a spray tower, and finally, the mixture is demisted and dehydrated by a demister and then is discharged. Through adopting above gas cleaning device to handle the flue gas, can ensure to detach the pollutant in the flue gas, make the flue gas can discharge up to standard.
Further, a second flue gas on-line monitor is arranged at the flue gas discharge outlet and is electrically connected with the controller. The second flue gas on-line monitoring instrument can be used for monitoring the composition data of the flue gas after being treated by the flue gas purification device in real time, and sending the composition data of the flue gas to the controller in real time to ensure that the flue gas is discharged up to the standard. When the component data of the flue gas is higher than a preset value, the controller sends an instruction to the sludge conveying device to reduce the adding frequency of the sludge, and sends an instruction to the auxiliary combustion device to increase the consumption of combustion-supporting gas, so that the optimal combustion condition is maintained in the incinerator, and the flue gas is ensured to be discharged after reaching the standard.
Further, the first flue gas on-line monitor comprises a smoke concentration monitor, an HCl concentration monitor, a CO concentration monitor and an SO 2 Concentration monitor, NO x Concentration monitor, soot concentration monitor, HCl concentration monitor, CO concentration monitor, SO 2 Concentration monitor, NO x The concentration monitor is electrically connected with the controller and is used for monitoring the smoke concentration, HCl concentration, CO concentration and SO concentration at the inlet of the smoke in real time 2 Concentration and NO x And (4) concentration. Further, the monitoring frequency of the first on-line flue gas monitor is collected every 30 minutes.
Further, the second flue gas on-line monitor also comprises a smoke concentration monitor, an HCl concentration monitor, a CO concentration monitor and an SO concentration monitor 2 Concentration monitor, NO x A concentration monitor for real-time monitoring smoke concentration, HCl concentration and CO concentration at the outlet of the smoke discharge、SO 2 Concentration and NO x And (4) concentration. Further, the monitoring frequency of the second flue gas on-line monitor is also collected every 30 minutes.
During the sludge CO-combustion process, the smoke, CO and SO 2 、HCl、NO x As a main gas pollutant, the emission amount of the catalyst under different mixed combustion conditions needs to be evaluated. In the sludge co-combustion tail gas, a plurality of pollutants enter fly ash in a solid form, so a series of indexes of the fly ash after combustion need to be detected.
Further, a flue gas control system that is used for domestic waste and mud to burn in coordination still includes sludge drying processing apparatus, and sludge drying processing apparatus links to each other with sludge conveyor. Because the moisture content of the sludge can only be reduced to 65% at most after the sludge is dehydrated in a sewage plant, secondary drying treatment is preferably carried out before the sludge is added into an incinerator for controlling the moisture content of the sludge to be between 40 and 50% and improving the heat value of the sludge. Further, the flue gas control system that is used for domestic waste and mud to burn in coordination of this application still includes exhaust-heat boiler, and exhaust-heat boiler is connected with smoke discharging pipeline and sludge drying processing apparatus respectively, will be used for carrying out the mummification from the heat that smoke discharging pipeline obtained to mud and handle.
Further, the flue gas control system that is used for domestic waste and mud to burn in coordination of this application still includes the sludge conditioning agent and puts in the device, and the setting of sludge conditioning agent is put in the device on mud conveyor, and the sludge conditioning agent is put in the device and is connected with the controller electricity. The sludge conveying device is preferably a spiral conveying device, the sludge conditioner throwing device is arranged on the spiral conveying device, and the sludge conditioner is thrown into the spiral conveying device through the sludge conditioner throwing device. When the temperature is lower than the preset value or the flue gas component data is higher than the preset value, the controller sends an instruction to the sludge conditioner feeding device to start feeding the sludge conditioner, so that the mixed combustion amount of the sludge is reduced, the heat value of the sludge is increased, and the sludge is favorable for incineration.
It should be understood that the application of the present application is not limited to the above examples, and that modifications and variations can be made by persons skilled in the art in light of the above teachings, and all such modifications and variations are intended to fall within the scope of the present application.
Claims (10)
1. A flue gas control system for the collaborative incineration of household garbage and sludge comprises an incinerator, a sludge conveying device, an auxiliary combustion device and a flue gas purification device, and is characterized by further comprising a temperature sensor, a first flue gas online monitor and a controller;
the incinerator is provided with a sludge feeding inlet, an air supply outlet and a flue gas discharge pipeline, the sludge feeding inlet is connected with the sludge conveying device, the air supply outlet is connected with the auxiliary combustion device, and the temperature sensor is arranged in the incinerator; the flue gas purification device is provided with a flue gas inlet and a flue gas discharge outlet, the flue gas inlet is communicated with the flue gas discharge pipeline, and the first flue gas online monitor is arranged at the flue gas inlet;
the sludge conveying device, the auxiliary combustion device, the temperature sensor and the first flue gas on-line monitor are respectively electrically connected with the controller.
2. The flue gas control system for the collaborative incineration of household garbage and sludge according to claim 1, wherein the flue gas purification device comprises a bag-type dust remover, an activated carbon adsorber, an ozone denitration deodorizer, a spray tower and a demister, which are sequentially connected.
3. The flue gas control system for domestic waste and sludge collaborative incineration according to claim 1, wherein a second flue gas online monitor is arranged at the flue gas discharge outlet, and the second flue gas online monitor is electrically connected with the controller.
4. The flue gas control system for collaborative incineration of household garbage and sludge according to claim 1, wherein the first online flue gas monitor comprises a smoke concentration monitor, an HCl concentration monitor, a CO concentration detector, and an SO 2 Concentration monitor, NO x Concentration monitor, said soot concentration monitor, said HCl concentration monitor, said CO concentration detector, said SO 2 Concentration monitor, said NO x The concentration monitor is electrically connected with the controller.
5. The flue gas control system for the collaborative incineration of household garbage and sludge according to claim 1, wherein the monitoring frequency of the first on-line flue gas monitor is collected every 30 minutes.
6. The flue gas control system for the collaborative incineration of household garbage and sludge according to claim 3, wherein the second online flue gas monitor comprises a smoke concentration monitor, an HCl concentration monitor, a CO concentration monitor, and an SO 2 Concentration monitor, NO x Concentration monitor, soot concentration monitor, HCl concentration monitor, CO concentration monitor, SO 2 Concentration monitor, said NO x The concentration monitor is electrically connected with the controller.
7. The flue gas control system for the collaborative incineration of household garbage and sludge according to claim 3, wherein the monitoring frequency of the second on-line flue gas monitor is acquired every 30 minutes.
8. The smoke control system for the cooperative incineration of the household garbage and the sludge as claimed in claim 1, further comprising a sludge drying treatment device, wherein the sludge drying treatment device is connected with the sludge conveying device.
9. The smoke control system for the collaborative incineration of household garbage and sludge according to claim 8, further comprising a waste heat boiler, wherein the waste heat boiler is respectively connected with the smoke discharge pipeline and the sludge drying treatment device, and the heat obtained from the smoke discharge pipeline is used for drying the sludge.
10. The flue gas control system for the collaborative incineration of household garbage and sludge according to claim 1, further comprising a sludge conditioner throwing device, wherein the sludge conditioner throwing device is arranged on the sludge conveying device, and the sludge conditioner throwing device is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211577251.7A CN115717710A (en) | 2022-12-09 | 2022-12-09 | Flue gas control system for collaborative incineration of household garbage and sludge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211577251.7A CN115717710A (en) | 2022-12-09 | 2022-12-09 | Flue gas control system for collaborative incineration of household garbage and sludge |
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| CN115717710A true CN115717710A (en) | 2023-02-28 |
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| CN202211577251.7A Pending CN115717710A (en) | 2022-12-09 | 2022-12-09 | Flue gas control system for collaborative incineration of household garbage and sludge |
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| CN (1) | CN115717710A (en) |
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- 2022-12-09 CN CN202211577251.7A patent/CN115717710A/en active Pending
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