CN211358386U - Sludge incineration flue gas treatment system - Google Patents
Sludge incineration flue gas treatment system Download PDFInfo
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- CN211358386U CN211358386U CN201922076017.6U CN201922076017U CN211358386U CN 211358386 U CN211358386 U CN 211358386U CN 201922076017 U CN201922076017 U CN 201922076017U CN 211358386 U CN211358386 U CN 211358386U
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Abstract
The utility model discloses a sludge incineration flue gas treatment system, which comprises a sludge incineration system and a flue gas treatment system, wherein the sludge incineration system comprises a feeding device, a boiler and a fan, the feeding device comprises a sludge pump and a sludge pipeline for conveying sludge, one end of the sludge pump is communicated with the sludge pipeline, and the other end of the sludge pump is communicated with a discharging pipeline; the boiler comprises a hearth for incinerating sludge, a material conveying pipeline and a flue gas discharge pipe which are respectively communicated with the inside of the hearth are arranged on the outer side of the hearth, and the material conveying pipeline is communicated with a discharging pipeline; the fan is communicated with the material conveying pipeline through a plurality of fan pipelines, and gas in the material conveying pipeline is output towards the hearth. The flue gas treatment system comprises a first dust removal device, an intermediate treatment device, a second dust removal device and an exhaust device which are sequentially communicated and arranged on a flue gas discharge pipe through a flue gas pipeline. This system can guarantee that mud is unobstructed sent to the boiler furnace in to burn, avoids causing the pipeline to block up, and can avoid the flue gas to cause the pollution to the environment.
Description
Technical Field
The utility model relates to an environmental protection equipment technical field, concretely relates to sludge incineration flue gas processing system.
Background
The industrial sludge contains a large amount of organic pollutants, germs, heavy metals, carcinogenic chemical substances and other components, the harmless incineration treatment is a method for effectively treating the sludge, the discharged tail gas is cooperatively treated by matching with a flue gas treatment system at the rear end of the boiler, and the aims of reduction, stabilization and harmlessness can be effectively realized. However, the water content of the sludge is high, at the present stage, the effect of dewatering by only depending on a plate-and-frame filter press cannot meet the actual use, and the sludge with high water content is very easy to cause pipeline blockage and difficult to be sent to a boiler hearth for combustion.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sludge incineration flue gas treatment system can guarantee that mud is unobstructed sent to and burns in the boiler furnace, avoids causing the pipeline to block up, can handle the flue gas after burning moreover, and the flue gas after avoiding burning causes the pollution to the environment.
In order to solve the above problem, the utility model discloses realize according to following technical scheme:
the utility model provides a pair of sludge incineration flue gas processing system, include:
a sludge incineration system, which comprises a feeding device, a boiler and a fan,
the feeding device comprises a sludge pump and a sludge pipeline for conveying sludge, one end of the sludge pump is communicated with the sludge pipeline, and the other end of the sludge pump is communicated with a discharging pipeline;
the boiler comprises a hearth for incinerating sludge, a material conveying pipeline and a smoke gas discharge pipe which are respectively communicated with the inside of the hearth are arranged on the outer side of the hearth, and the material conveying pipeline is communicated with the discharging pipeline;
the fan is communicated with the material conveying pipeline through a plurality of fan pipelines, and gas in the material conveying pipeline is output towards the inside of the hearth;
the flue gas treatment system comprises a first dust removal device, an intermediate treatment device, a second dust removal device and an exhaust device which are sequentially communicated and arranged on the flue gas discharge pipe through a flue gas pipeline.
Furthermore, a blanking valve is arranged on the blanking pipeline and electrically connected with a control device.
Furthermore, the material conveying pipeline is obliquely arranged, the upper end of the material conveying pipeline is communicated with the blanking pipeline, and the lower end of the material conveying pipeline is communicated to the hearth.
Furthermore, the fan pipeline comprises a first air pipe and a second air pipe, and one ends of the first air pipe and the second air pipe are communicated with the fan;
the other end of the first air pipe is communicated with one end of the conveying pipeline, which is far away from the hearth;
the other end of the second air pipe is communicated with and arranged at one end, close to the hearth, of the material conveying pipeline.
Furthermore, the first air pipe and the second air pipe are both provided with fan valves, and the fan valves are electrically connected with a control device.
Furthermore, compensators are arranged on the blanking pipeline and the fan pipeline.
Further, the boiler also comprises an SCR denitration device, the SCR denitration device is connected and arranged between the boiler and the first dust removal device, and the intermediate treatment device is a desulfurization device.
Further, still include SNCR denitrification facility, SNCR denitrification facility sets up in the flue gas discharge pipe, intermediate treatment device sets up to desulphurization unit.
Furthermore, the intermediate processing device is set as a synchronous desulfurization and denitrification device, a flue gas quenching device and a gas mixing reactor are sequentially arranged in a flue gas pipeline between the first dust removal device and the synchronous desulfurization and denitrification device, and an ozone generating device is externally connected to the gas mixing reactor.
Further, still include the draught fan, the draught fan sets up intermediate processing device with between the first dust collector.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model relates to a sludge incineration flue gas treatment system,
through setting up the feed arrangement who includes the sludge pump, provide power through the sludge pump, take mud out from the sludge conduit to carry away through the unloading pipeline that sets up on the sludge pump, enter into the boiler through the conveying pipeline in, guarantee the smooth and easy of unloading. Simultaneously, still be provided with the fan, the fan communicates with the conveying pipeline through a plurality of fan pipelines, and when unloading, mud gets into the conveying pipeline from the unloading pipeline through feed arrangement's transportation, then blows in mud in the boiler from the conveying pipeline through the jetting of fan, accomplishes the unloading operation of mud. Adopt the fan jetting, can effectively avoid mud to the jam of pipeline, guarantee that mud is unobstructed to be sent to the furnace of boiler in to burn. In addition, set up unloading valve and fan valve respectively on unloading pipeline and fan pipeline to the homogeneous electricity is connected with controlling means, through controlling means's control, can accomplish the unloading and the jetting operation of mud automatically, can effectively avoid crossing wind each other between the pipeline for the efficiency of mud unloading. Meanwhile, a flue gas treatment system is connected and arranged behind the boiler, so that the burned flue gas can be effectively treated, and the pollution of the burned flue gas to the environment is avoided.
Drawings
Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic structural view of a sludge incineration flue gas treatment system according to the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1A;
FIG. 3 is a schematic structural view of a flue gas treatment system according to embodiment 1;
FIG. 4 is a schematic structural view of a flue gas treatment system according to embodiment 2;
FIG. 5 is a schematic structural view of a flue gas treatment system according to embodiment 3;
in the figure:
100-sludge pump; 101-a sludge pipeline; 102-a blanking pipe; 103-a compensator; 104-a discharge valve; 200-a fan; 201-a fan duct; 202-a second air duct; 203-a first air duct; 204-a fan valve; 300-a boiler; 301-hearth; 302-furnace mouth; 303-a material conveying pipeline; 304-a gate valve; 305-flue gas discharge pipe; 400-a denitration device; 401-reservoir pump; 500-a first dust removal device; 600-intermediate processing means; 601-induced draft fan; 700-a second dust removal device; 800-an exhaust device; 900-flue gas pipeline.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
As shown in fig. 1-2, a sludge incineration flue gas treatment system comprises a sludge incineration system, the sludge incineration system comprises a feeding device, a fan 200 and a boiler 300, the feeding device comprises a sludge pump 100, one end of a sludge pipeline 101 for conveying sludge is communicated with the sludge pump 100, and a blanking pipeline 102 is further communicated with the sludge pump 100. The boiler 300 comprises a hearth 301 for incinerating sludge, a furnace opening 302 is formed in the outer side of the hearth 301, a material conveying pipeline 303 is arranged on the furnace opening 302, and the material conveying pipeline 303 is communicated with a discharging pipeline. The sludge pump 100 pumps the sludge out of the sludge pipeline 101, conveys the sludge to the blanking pipeline 102, discharges the sludge into the material conveying pipeline 303, and finally enters the hearth 301 of the boiler 300 through the material conveying pipeline 303 to realize the sludge transportation operation.
In this embodiment, in order to facilitate the sludge to enter the furnace 301, the material conveying pipeline 303 is obliquely arranged, the upper end of the material conveying pipeline 303 is communicated with the discharging pipeline 102, and the lower end of the material conveying pipeline 303 is communicated to the boiler 300, so that the sludge can more easily enter the furnace 301 of the boiler 300 under the action of gravity. The delivery pipe 303 is provided with a gate valve 304, the gate valve 304 is provided between the discharge pipe 102 and the furnace mouth 302, and when the gate valve 304 is closed, the sludge cannot enter the boiler 300 through the discharge pipe 102. The gate valve 304 is arranged on the material conveying pipeline 303, so that stopping and starting of sludge blanking operation are controlled conveniently. Fan 200 communicates with conveying pipeline 303 through a plurality of fan pipelines 201, and the gaseous output in conveying pipeline 303 towards furnace 301, can accelerate the unloading speed of mud through fan 300, can avoid mud to block up in the pipeline simultaneously. Fan pipeline 201 includes first tuber pipe 203 and second tuber pipe 202, the one end intercommunication of first tuber pipe 203 and second tuber pipe 202 fan 200, the other end intercommunication setting of first tuber pipe 203 deviate from the one end of furnace 301 at conveying pipeline 303, insufflate the interior mud of conveying pipeline 303 fast in furnace 301 for the efficiency of mud unloading. The other end of the second air pipe 202 is communicated with one end of the material conveying pipeline 303 close to the hearth 301, so that the sludge is prevented from being accumulated at the furnace opening 302 to block the furnace opening 302.
The first air duct 203 and the second air duct 202 are both provided with a blower valve 204, and the blower valve 204 controls the blowing output of the blower 200. The output end of the fan 200 is further provided with a fan valve 204 for master control of the output of the fan 200, so that operations such as maintenance of the fan pipeline 201 are facilitated. In this embodiment, the adopted blower 200 is a roots blower, and has the advantages of simple structure, convenient manufacture, simple and convenient operation, convenient use and maintenance for operators, effective improvement of production efficiency and reduction of production cost.
The blanking pipe 102 is provided with a blanking valve 105, and the blower valve 204 and the blanking valve 105 are pneumatic valves and are electrically connected with a control device. In this embodiment, the control device used is a time relay. During blanking, the time relay controls the opening and closing of the blanking valve 105 and the fan valve 204, the sludge pump 100 pumps sludge, the blanking valve 105 and the fan valve 204 are opened simultaneously, and the blanking and the blowing of the sludge can be completed simultaneously, because the wind direction of the fan pipeline 201 is output towards the boiler 300, the problem of sludge backflow caused by mutual wind cross between pipelines can not occur. Of course, in order to further prevent the problem of air cross between pipelines, the blanking valve 105 is opened first during blanking, the fan valve 204 is closed, the blanking valve 105 is closed during blowing, the fan valve 204 is opened, and the blanking and blowing operations are automatically completed through the control of the time relay, so that the air cross between the pipelines can be effectively avoided, and the efficiency of sludge blanking can be accelerated.
In order to alleviate and avoid the deformation or damage of the pipeline caused by the heat generated by the boiler, the compensator 103 is required to be arranged on the pipeline, namely, the compensator 103 is arranged on the blanking pipeline 102 and the fan pipeline 201. The thermal elongation of the pipeline is compensated by the compensator 103, so that the stress of the pipe wall and the acting force acting on the valve member or the bracket structure are reduced, the service life of the pipeline is prolonged, and the frequency of overhauling and replacing the pipeline is reduced.
As shown in fig. 3, the system further includes a flue gas treatment system, which includes a first dust-removing device 500, an intermediate treatment device 600, a second dust-removing device 700 and an exhaust device 800, which are sequentially connected to the flue gas discharge pipe 305 through a flue gas pipeline 900. After being discharged from the flue gas discharge pipe 305 of the boiler 300, the flue gas is subjected to the overall purification treatment by the first dust removing device 500, the intermediate treatment device 600, and the second dust removing device 700 in sequence, and then discharged from the exhaust device 800. A denitration device 400 is further provided, the denitration device 400 is disposed between the boiler 300 and the first dust removing device 500, and the intermediate treatment device 600 is disposed as a desulfurization device. Through a series of denitration desulfurization and dust removal treatments, the pollution of the flue gas generated after sludge incineration to the environment can be effectively avoided, and the aims of reduction, stabilization and harmlessness are effectively achieved.
In this embodiment, the adopted denitration device 400 is an SCR denitration device, the first dust collector 500 is an electrostatic dust collector, the intermediate processing device 600 is a three-phase turbulence barrel high-efficiency desulfurization and dust removal tower, the second dust collector 700 is a wet electrostatic dust removal and demisting device, and the adopted exhaust device 800 is a chimney, wherein the first dust collector 500 can also adopt a bag-type dust collector. Still be provided with draught fan 601 between high-efficient desulfurization dusting tower of three-phase turbulent flow section of thick bamboo and electrostatic precipitator, send into the high-efficient desulfurization dusting tower of three-phase turbulent flow section of thick bamboo through draught fan 601 the flue gas after electrostatic precipitator removes dust for the speed that the flue gas flows improves the efficiency that the flue gas was handled.
In this embodiment, with the aid of the first dust collector 500 (electrostatic dust collector or bag-type dust collector), the three-phase turbulence barrel high-efficiency desulfurization dust-removal tower and the wet electrostatic dust-removal demisting device, particulate mercury and water-soluble divalent mercury in the flue gas can be removed, the removal rate of the particulate mercury and the divalent mercury is above 90%, and the emission concentration of total mercury in the flue gas at the chimney is lower than 0.03mg/m3The object of (1).
Compared with the prior art, this embodiment a sludge incineration flue gas processing system, through SCR denitrification facility, electrostatic precipitator, the high-efficient desulfurization dusting tower of three-phase turbulent flow section of thick bamboo and wet-type electrostatic precipitator defogging device's combined action, can realize the ultralow emission index of industry coal fired boiler flue gas multi-pollutant, the flue gas of emission can reach following standard: smoke dust less than or equal to 10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3Mercury and compounds thereof less than or equal to 0.03mg/Nm3The system is not only far lower than the emission limit value of the existing industrial coal-fired boiler, but also stable in system operation and high in cost performance, is particularly suitable for small and medium boilers, and can be conveniently installed and modified on the existing flue gas purification equipment.
Example 2
As shown in fig. 4, this embodiment discloses another sludge incineration flue gas treatment system, which is structurally different from the sludge incineration flue gas treatment system described in embodiment 1 in that:
in the present embodiment, the denitration device 400 is an SNCR denitration device, and the SNCR denitration device is disposed in the flue gas discharge pipe 305 of the boiler 300. SNCR denitrification facility is including being used for storing and carrying the stock solution pump 401 of reductant, and stock solution pump 401 passes through the pipeline and is connected with SNCR denitrification facility, and in this embodiment, adopt the aqueous ammonia as the reductant, the aqueous ammonia is stored in stock solution pump 401, carries the aqueous ammonia in the SNCR denitrification facility through the pipeline.
The other structures of the sludge incineration flue gas treatment system described in this embodiment are completely the same as those of embodiment 1, and are not described herein again.
Compared with the prior art, this embodiment a sludge incineration flue gas processing system, through SNCR denitration device, electrostatic precipitator, the high-efficient desulfurization dusting tower of three-phase turbulent flow section of thick bamboo and wet-type electrostatic precipitator defogging device's combined action, can realize the ultralow emission index of industry coal fired boiler flue gas multi-pollutant, the flue gas of emission can reach following standard: smoke dust less than or equal to 10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3Mercury and compounds thereof less than or equal to 0.03mg/Nm3The system is not only far lower than the emission limit value of the existing industrial coal-fired boiler, but also stable in system operation and high in cost performance, is particularly suitable for small and medium boilers, and can be conveniently installed and modified on the existing flue gas purification equipment.
Example 3
As shown in fig. 5, this embodiment discloses another sludge incineration flue gas treatment system, which is structurally different from the sludge incineration flue gas treatment system described in embodiment 1 in that:
in this embodiment, the denitration device 400 is not provided, the intermediate processing device 600 is a synchronous desulfurization and denitration device, a flue gas quenching device (not shown) is provided in the flue gas pipe 900 between the electrostatic dust collector and the induced draft fan 601, a gas mixing reactor 602 is provided in the flue gas pipe 900 between the induced draft fan 601 and the synchronous desulfurization and denitration device, and an ozone generator 603 is externally connected to the gas mixing reactor 602. The flue gas shock cooling device can be set as a spraying device, atomized water is sprayed on the flue gas to cool the flue gas, and the temperature of the flue gas is reduced to 100-120 ℃ from about 150 ℃. The ozone generating device 603 generates 5-50kg/h of ozone. The ozone generating device 603 is adjusted in ozone production amount according to the amount of flue gas of the boiler 300 to be treated, and the larger the amount of flue gas is, the larger the amount of ozone is.
After the flue gas is subjected to dust removal treatment by the electrostatic dust collector, the flue gas enters a flue gas quenching device in the flue gas pipeline 900, so that the temperature of the flue gas is reduced to 100-120 ℃. The cooled flue gas is sent into a gas mixing reactor 602 arranged inside the flue gas pipeline 900 by an induced draft fan 601, and is merged with ozone generated by an ozone generating device 603. The flue gas and ozone are rapidly and uniformly mixed in the gas mixing reactor 602 in a short time, so that the NO which is difficult to dissolve in water in the flue gas can be completely oxidized into NO2 which is easy to dissolve in water. After the flue gas fully reacts in the gas mixing reactor 602, the flue gas enters a synchronous desulfurization and denitrification device for desulfurization and denitrification treatment, and finally the treated flue gas is discharged from a chimney.
The other structures of the sludge incineration flue gas treatment system described in this embodiment are completely the same as those of embodiment 1, and are not described herein again.
Compared with the prior art, this embodiment a sludge incineration flue gas processing system, through electrostatic precipitator, synchronous SOx/NOx control device and wet-type electrostatic precipitator defogging device's combined action, can realize industry coal fired boiler flue gas multi-pollutant ultra-low emission index, the flue gas of emission can reach following standard: smoke dust less than or equal to 10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3Mercury and compounds thereof less than or equal to 0.03mg/Nm3The system is not only far lower than the emission limit value of the existing industrial coal-fired boiler, but also stable in system operation and high in cost performance, is particularly suitable for small and medium boilers, and can be conveniently installed and modified on the existing flue gas purification equipment.
While the preferred embodiments of the present invention have been described in detail, it should be understood that modifications and variations can be made by persons skilled in the art without inventive faculty, and in light of the above teachings. Therefore, the technical solutions according to the present invention, which can be obtained by logical analysis, reasoning or limited experiments based on the prior art, should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a sludge incineration flue gas processing system which characterized in that includes:
a sludge incineration system, which comprises a feeding device, a boiler and a fan,
the feeding device comprises a sludge pump and a sludge pipeline for conveying sludge, one end of the sludge pump is communicated with the sludge pipeline, and the other end of the sludge pump is communicated with a discharging pipeline;
the boiler comprises a hearth for incinerating sludge, a material conveying pipeline and a smoke gas discharge pipe which are respectively communicated with the inside of the hearth are arranged on the outer side of the hearth, and the material conveying pipeline is communicated with the discharging pipeline;
the fan is communicated with the material conveying pipeline through a plurality of fan pipelines, and gas in the material conveying pipeline is output towards the inside of the hearth;
the flue gas treatment system comprises a first dust removal device, an intermediate treatment device, a second dust removal device and an exhaust device which are sequentially communicated and arranged on the flue gas discharge pipe through a flue gas pipeline.
2. The sludge incineration flue gas treatment system according to claim 1, wherein a blanking valve is arranged on the blanking pipeline, and the blanking valve is electrically connected with a control device.
3. The sludge incineration flue gas treatment system of claim 1, wherein the material delivery pipe is disposed obliquely, an upper end of the material delivery pipe is communicated with the material discharge pipe, and a lower end of the material delivery pipe is communicated to the hearth.
4. The sludge incineration flue gas treatment system according to claim 1, wherein the fan pipeline comprises a first air pipe and a second air pipe, and one end of the first air pipe and one end of the second air pipe are communicated with the fan;
the other end of the first air pipe is communicated with one end of the conveying pipeline, which is far away from the hearth;
the other end of the second air pipe is communicated with and arranged at one end, close to the hearth, of the material conveying pipeline.
5. The sludge incineration flue gas treatment system according to claim 4, wherein the first air pipe and the second air pipe are both provided with fan valves, and the fan valves are electrically connected with a control device.
6. The sludge incineration flue gas treatment system according to claim 1, wherein compensators are arranged on the blanking pipeline and the fan pipeline.
7. The sludge incineration flue gas treatment system according to claim 1, further comprising an SCR denitration device, wherein the SCR denitration device is connected and arranged between the boiler and the first dust removal device, and the intermediate treatment device is arranged as a desulfurization device.
8. The sludge incineration flue gas treatment system according to claim 1, further comprising an SNCR denitration device disposed in the flue gas discharge pipe, wherein the intermediate treatment device is disposed as a desulfurization device.
9. The sludge incineration flue gas treatment system according to claim 1, wherein the intermediate treatment device is a synchronous desulfurization and denitrification device, a flue gas quenching device and a gas mixing reactor are sequentially arranged in a flue gas pipeline between the first dust removal device and the synchronous desulfurization and denitrification device, and an ozone generation device is externally connected to the gas mixing reactor.
10. The sludge incineration flue gas treatment system according to any one of claims 1 to 9, further comprising an induced draft fan, wherein the induced draft fan is disposed between the intermediate treatment device and the first dust removal device.
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| CN201922076017.6U CN211358386U (en) | 2019-11-26 | 2019-11-26 | Sludge incineration flue gas treatment system |
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| CN201922076017.6U CN211358386U (en) | 2019-11-26 | 2019-11-26 | Sludge incineration flue gas treatment system |
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