CN217527012U - Intelligent SNCR (selective non-catalytic reduction) system for denitration of waste incineration flue gas - Google Patents
Intelligent SNCR (selective non-catalytic reduction) system for denitration of waste incineration flue gas Download PDFInfo
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- CN217527012U CN217527012U CN202220553547.4U CN202220553547U CN217527012U CN 217527012 U CN217527012 U CN 217527012U CN 202220553547 U CN202220553547 U CN 202220553547U CN 217527012 U CN217527012 U CN 217527012U
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Abstract
The utility model provides a msw incineration flue gas denitration is with intelligent SNCR system, prepare storage system, carry distribution measurement system and injection system including the reductant, reductant preparation storage system includes proportioning device and urea solution holding vessel, proportioning device includes that the former jar of demineralized water, urea solution dilute ratio jar, automatic ratio terminal and dilute the measuring pump that the ratio jar is connected with former jar of demineralized water and urea solution, the measuring pump passes through PLC and is connected with automatic ratio terminal, urea solution dilutes the ratio jar and passes through multistage centrifugal pump and pipe connection with the urea solution holding vessel.
Description
Technical Field
The utility model relates to a domestic waste incineration handles technical field, in particular to msw incineration is intelligent SNCR system for flue gas denitration.
Background
At present, the incineration method is widely applied to the treatment of urban domestic garbage in China. With the increasing attention of governments at all levels on environmental protection, the emission requirements of pollutants generated after waste incineration are becoming stricter. Therefore, how to safely, reliably, efficiently and environmentally incinerate waste and effectively control the emission of pollutants is the latest problem of the current waste incineration technology, most of the urea stock solution with the concentration of 40% adopted by the existing SNCR system is directly used, but under some conditions, such as epidemic situation influence or during spring festival, the stock quantity and quality of the urea stock solution with the concentration of 40% cannot be guaranteed in time, so that the emission index of flue gas fluctuates.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned not enough of technique, provide a msw incineration flue gas denitration is with intelligent SNCR system, prepare storage system, transport distribution measurement system and injection system including the reductant, reductant preparation storage system includes proportioning device and urea solution holding vessel, proportioning device includes that demineralized water former tank, urea solution dilute ratio jar, automatic ratio terminal and dilutes the measuring pump that the ratio jar is connected with demineralized water former tank and urea solution, the measuring pump passes through PLC and automatic ratio end connection, urea solution dilutes the ratio jar and passes through multistage centrifugal pump and pipe connections with the urea solution holding vessel.
Adopt above-mentioned technical scheme, through setting up including reductant preparation storage system, carry intelligent SNCR system for the denitration of msw incineration flue gas including distribution measurement system and injection system, wherein reductant preparation storage system includes proportioning device and urea solution holding vessel, wherein the proportioning device includes former jar of demineralized water, urea solution dilutes the ratio jar, automatic ratio terminal and the measuring pump of being connected with former jar of demineralized water and urea solution dilution ratio jar, and the measuring pump passes through PLC and is connected with automatic ratio terminal, urea solution dilution ratio jar passes through multistage centrifugal pump and pipe connection with urea solution holding vessel, make when the urea reserves of 40% concentration become urgent, through dissolving the high-quality fixed urea that total nitrogen volume is greater than 46%, ensure that the chemical reaction is stable in the stove, improve the urea utilization ratio, improve boiler life, inherit the emission reduction, energy-conserving core thought, guarantee that environmental protection factor is stable discharges up to standard, simultaneously improved storage capacity, ensure that equipment lasts the operation for a long time, guarantee the stable refuse treatment.
The utility model discloses a further setting: the utility model discloses a demineralized water heating device, including the former jar of demineralized water outside, including seal cover, conduction oil, heating device and temperature regulating device, temperature regulating device includes conduction oil cooling box, a pair of circulating line and transportation pump, the seal cover sets up in the former jar of demineralized water outside and forms a sealed chamber, the conduction oil sets up in sealed intracavity heating device sets up on the seal cover and contacts with the conduction oil, conduction oil cooling box communicates through a pair of circulating line and sealed chamber, the transportation pump sets up in the conduction oil cooling box.
Adopt above-mentioned technical scheme, because the former jar outside of demineralized water is equipped with demineralized water heating device, including seal cover, conduction oil, heating device and temperature regulating device, temperature regulating device includes conduction oil cooling box, a pair of circulating line and transports the pump, the seal cover sets up in the former jar outside of demineralized water and forms a sealed chamber, the conduction oil sets up in sealed intracavity heating device sets up on the seal cover and contacts with the conduction oil, the conduction oil cooling box communicates with sealed chamber through a pair of circulating line, transport the pump and set up in the conduction oil cooling box, because solid urea dissolving process is "heat absorption process", condenses easily in dissolving, leads to the unable normal operating of SNCR, heats the demineralized water through heating device and makes and can avoid the phenomenon of condensing when high temperature demineralized water and solid particle mix the dissolution, can keep warm to the demineralized water that the heating finishes through temperature regulating device simultaneously.
The utility model discloses a further setting: the urea solution dilutes and is equipped with agitating unit and concentration meter including driving motor and stirring paddle leaf in the ratio jar, agitating unit and concentration meter all are connected with automatic ratio terminal through PLC.
Adopt above-mentioned technical scheme, because be equipped with agitating unit and concentration meter including driving motor and stirring vane in the urea solution dilutes the ratio jar, agitating unit and concentration meter all are connected with automatic ratio terminal through PLC for can carry out real time monitoring to the urea concentration in the jar through the concentration meter, carry out the ratio of solution according to actual concentration demand again.
The utility model discloses a further setting: the top of the urea solution dilution proportioning tank is also provided with a breathing hole for preventing sudden change of air pressure.
By adopting the technical scheme, because the top of the urea solution dilution proportioning tank is also provided with the breathing hole for preventing sudden change of air pressure, the damage to the tank body caused by the change of the internal pressure when high-temperature demineralized water and urea solid particles are dissolved in the proportioning tank is avoided, and the safety of the equipment is improved.
Drawings
Fig. 1 is the utility model discloses embodiment's a msw incineration flue gas denitration is with intelligent SNCR system's schematic structure diagram.
Figure 2 is the utility model discloses a section structure schematic diagram of the former jar of demineralized water in intelligent SNCR system for denitration of msw incineration flue gas of embodiment.
Figure 3 is the utility model discloses a section structure schematic diagram of urea solution dilutes ratio jar among msw incineration flue gas denitration is with intelligent SNCR system of embodiment.
1-reducing agent preparation and storage system, 2-proportioning device, 3-urea solution storage tank, 4-desalted water raw tank, 5-urea solution dilution and proportioning tank, 6-metering pump, 7-multistage centrifugal pump, 8-desalted water heating device, 9-sealing sleeve, 10-heat conducting oil, 11-heating device, 12-temperature control device, 13-heat conducting oil cooling box, 14-circulating pipeline, 15-transfer pump, 16-stirring device, 17-concentration meter and 18-breathing hole.
Detailed Description
As shown in fig. 1-3, an intelligent SNCR system for denitration of waste incineration flue gas includes reducing agent preparation storage system 1, carries distribution measurement system and injection system, reducing agent preparation storage system includes proportioning device 2 and urea solution holding vessel 3, proportioning device includes demineralized water former tank 4, urea solution dilution proportioning tank 5, automatic proportioning terminal and the measuring pump 6 of being connected with demineralized water former tank and urea solution dilution proportioning tank, the measuring pump passes through PLC and is connected with automatic proportioning terminal, urea solution dilution proportioning tank passes through multistage centrifugal pump 7 and tube coupling with the urea solution holding vessel.
Through setting up including reductant preparation memory system, carry intelligent SNCR system for msw incineration flue gas denitration including distribution measurement system and injection system, wherein reductant preparation memory system includes proportioning device and urea solution holding vessel, wherein proportioning device includes former jar of demineralized water, urea solution dilutes the ratio jar, automatic ratio terminal and with former jar of demineralized water and the measuring pump that the urea solution dilutes the ratio jar and is connected, and the measuring pump passes through PLC and is connected with automatic ratio terminal, urea solution dilutes the ratio jar and passes through multistage centrifugal pump and pipe connection with the urea solution holding vessel, make when the urea reserves of 40% concentration are urgent, through dissolving the fixed urea of high quality that total nitrogen volume is greater than 46%, ensure that the stove internal chemical reaction is stable, improve the urea utilization ratio, improve boiler life, inherit the emission reduction, the core thought of energy-conserving, guarantee environmental protection factor and stabilize up-to-standard emission, and simultaneously, storage capacity has been improved, ensure equipment long-term continuous operation, guarantee rubbish stable processing.
The former jar of the demineralized water outside is equipped with demineralized water heating device 8, including seal cover 9, conduction oil 10, heating device 11 and temperature regulating device 12, temperature regulating device includes conduction oil cooling box 13, a pair of circulating line 14 and transports pump 15, the seal cover sets up in the former jar of the demineralized water outside and forms a sealed chamber, the conduction oil sets up in sealed intracavity heating device sets up in the seal cover and contacts with the conduction oil, the conduction oil cooling box communicates with sealed chamber through a pair of circulating line, it sets up in the conduction oil cooling box to transport the pump.
Because the former jar outside of demineralized water is equipped with demineralized water heating device, including seal cover, conduction oil, heating device and temperature regulating device, temperature regulating device includes conduction oil cooling box, a pair of circulating line and transportation pump, the seal cover sets up in the former jar outside of demineralized water and forms a sealed chamber, the conduction oil sets up in sealed intracavity heating device sets up on the seal cover and contacts with the conduction oil, the conduction oil cooling box communicates with sealed chamber through a pair of circulating line, the transportation pump sets up in the conduction oil cooling box, because solid urea dissolving process is "heat absorption process", condenses easily in dissolving, leads to the unable normal operating of SNCR, heats the demineralized water through heating device and makes and can avoid the phenomenon of condensing when high temperature demineralized water and solid particle mix and dissolve, can keep warm to the demineralized water that the heating finishes through temperature regulating device simultaneously.
Be equipped with agitating unit and concentration meter 17 including driving motor and stirring paddle 16 in the urea solution dilutes the ratio jar, agitating unit and concentration meter all are connected with automatic ratio terminal through PLC.
Because be equipped with agitating unit and concentration meter including driving motor and stirring paddle leaf in the urea solution dilutes the ratio jar, agitating unit and concentration meter all are connected with automatic ratio terminal through PLC for can carry out real time monitoring through the concentration meter to the urea concentration in the jar, carry out the ratio of solution according to actual concentration demand again.
The top of the urea solution dilution proportioning tank is also provided with a breathing hole 18 for preventing sudden change of air pressure.
Because the top of the urea solution dilution proportioning tank is also provided with a breathing hole for preventing sudden change of air pressure, the damage to the tank body caused by the change of internal pressure when high-temperature demineralized water and urea solid particles are dissolved in the proportioning tank is avoided, and the safety of equipment is improved.
Claims (4)
1. The utility model provides a msw incineration flue gas denitration is with intelligent SNCR system, includes reductant preparation storage system, carries distribution measurement system and injection system, its characterized in that: reducing agent preparation storage system includes proportioning device and urea solution holding vessel, the proportioning device includes former jar of demineralized water, urea solution dilution proportioning jar, automatic ratio terminal and dilutes the measuring pump that the proportioning jar is connected with former jar of demineralized water and urea solution, the measuring pump passes through PLC and is connected with automatic ratio terminal, urea solution dilution proportioning jar passes through multistage centrifugal pump and pipe connection with the urea solution holding vessel.
2. The intelligent SNCR system for denitration of waste incineration flue gas of claim 1, characterized in that: the utility model discloses a demineralized water cooling system, including the former jar of demineralized water outside, including seal cover, conduction oil, heating device and temperature regulating device, temperature regulating device includes conduction oil cooling box, a pair of circulating line and transports the pump, the seal cover sets up in the former jar of demineralized water outside and forms a sealed chamber, the conduction oil sets up in sealed intracavity, heating device set up in the seal cover and with the conduction oil contact, conduction oil cooling box communicates through a pair of circulating line and sealed chamber, the transport pump sets up in the conduction oil cooling box.
3. The intelligent SNCR system for denitration of waste incineration flue gas of claim 1, characterized in that: the urea solution dilutes and is equipped with agitating unit and concentration meter including driving motor and stirring paddle leaf in the ratio jar, agitating unit and concentration meter all are connected with automatic ratio terminal through PLC.
4. The intelligent SNCR system for denitration of waste incineration flue gas of claim 1, characterized in that: the top of the urea solution dilution proportioning tank is also provided with a breathing hole for preventing sudden change of air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220553547.4U CN217527012U (en) | 2022-03-14 | 2022-03-14 | Intelligent SNCR (selective non-catalytic reduction) system for denitration of waste incineration flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220553547.4U CN217527012U (en) | 2022-03-14 | 2022-03-14 | Intelligent SNCR (selective non-catalytic reduction) system for denitration of waste incineration flue gas |
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| Publication Number | Publication Date |
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| CN217527012U true CN217527012U (en) | 2022-10-04 |
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| CN202220553547.4U Active CN217527012U (en) | 2022-03-14 | 2022-03-14 | Intelligent SNCR (selective non-catalytic reduction) system for denitration of waste incineration flue gas |
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| CN (1) | CN217527012U (en) |
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2022
- 2022-03-14 CN CN202220553547.4U patent/CN217527012U/en active Active
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