CN209612626U - The calcium hydroxide accurate measurement feeding system of consumer waste incineration dry FGD process - Google Patents
The calcium hydroxide accurate measurement feeding system of consumer waste incineration dry FGD process Download PDFInfo
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- CN209612626U CN209612626U CN201822216233.1U CN201822216233U CN209612626U CN 209612626 U CN209612626 U CN 209612626U CN 201822216233 U CN201822216233 U CN 201822216233U CN 209612626 U CN209612626 U CN 209612626U
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- Prior art keywords
- slaked lime
- feeding
- bin
- metering
- weighing
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- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 title claims abstract description 84
- 229910001861 calcium hydroxide Inorganic materials 0.000 title claims abstract description 77
- 239000000920 calcium hydroxide Substances 0.000 title claims abstract description 77
- 238000005259 measurement Methods 0.000 title claims abstract description 16
- 238000004056 waste incineration Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title abstract description 11
- 238000005303 weighing Methods 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 69
- 238000000746 purification Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000005243 fluidization Methods 0.000 claims description 10
- 239000010791 domestic waste Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 3
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 3
- 239000007921 spray Substances 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000007599 discharging Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model discloses a kind of calcium hydroxide accurate measurement feeding systems of consumer waste incineration dry FGD process, comprising: niter ash cellar, at least two dosing mechanisms, at least two feeding mechanisms, ash cellar weighing device, safety protection component and fluidizer；Wherein, calcium hydroxide orlop portion is respectively equipped at least two taper lower hoppers, and each taper lower hopper bottom is all provided with a feed opening, and the feed opening of each taper lower hopper bottom is sequentially connected a dosing mechanism and a feeding mechanism；Calcium hydroxide orlop portion sets ash cellar weighing device；Safety protection component is set at the top of niter ash cellar；Fluidizer is located in the lower hopper in calcium hydroxide orlop portion.The calcium hydroxide that the feeding system ensures that the flue for burning line to every sprays into accurately measures, guarantee the flue gas all the period of time qualified discharge of processing consumer waste incineration system, it avoids because spraying into the problem of niter ash quantity inaccuracy influences discharge, and can avoid the problem that calcium hydroxide is built bridge in lower hopper by fluidizer.
Description
Technical Field
The utility model relates to a domestic waste burns gas cleaning field, especially relates to a lime hydrate accurate measurement feed system that domestic waste burns dry flue gas cleaning and uses.
Background
At present, incineration treatment gradually becomes a main solution for domestic urban domestic garbage, and harmlessness, reduction and recycling of the domestic garbage can be effectively realized. In the process of burning the garbage, flue gas harmful to the environment is inevitably generated, and the components of the flue gas are complex and contain HCl and SO2HF, NOx, dioxin, Pb, Cd, Hg and the like. At present, the flue gas is treated by adopting a semidry method, a dry deacidification method and a bag-type dust remover, and most incineration plants execute national standards and European Union 2000(EU2000/76/EEC) emission standards.
The rotary spraying semi-dry method is high in deacidification efficiency and does not produce waste water, and is widely used in flue gas purification of waste incineration power generation, but in the actual operation process, a rotary atomizer is stopped due to failure or manual maintenance, when the atomizer is stopped to operate, smoke pollutants have excessive emission risks, when the incineration working condition fluctuates, the original concentration of the smoke pollutants is also changed, at the moment, only the rotary spraying semi-dry method is used, the excessive emission risks also exist, therefore, the dry method is arranged at the rear stage of the semi-dry method, namely, slaked lime powder is sprayed into a flue from a reaction tower to a bag-type dust remover, and the purpose of further deacidification is achieved.
At present, the feeding of the slaked lime adopts a disc feeding mode, and the feeding mode has the defects that the sprayed slaked lime cannot be measured, and if a plurality of burning lines run simultaneously, the amount of the slaked lime entering each line cannot be accurately controlled. The environmental protection pressure is increasing day by day at present, and HCl and SO2When the acidic substances are key monitored discharge pollutants of the waste incineration power plant, the problem to be solved is how to accurately measure the slaked lime sprayed into each incineration line and ensure the full-time standard discharge.
SUMMERY OF THE UTILITY MODEL
Based on the problem that prior art exists, the utility model aims at providing a lime hydrate accurate measurement feed system that domestic waste burns dry flue gas cleaning usefulness can be to every accurate measurement of the lime hydrate that burns the flue of line and spout into, ensures that domestic waste burns the flue gas treatment full period discharge to reach standard of system.
The utility model aims at realizing through the following technical scheme:
the embodiment of the utility model provides a slaked lime accurate measurement feed system that domestic waste burns dry flue gas purification usefulness, include:
the system comprises a slaked lime bin, at least two metering and feeding mechanisms, at least two feeding mechanisms, an ash bin weighing device, a safety protection assembly and a fluidizing device; wherein,
the bottom of the slaked lime bin is respectively provided with at least two conical blanking hoppers, the bottom of each conical blanking hopper is provided with a blanking port, and the blanking port at the bottom of each conical blanking hopper is sequentially connected with a metering feeding mechanism and a feeding mechanism;
the bottom of the slaked lime bin is provided with the ash bin weighing device;
the safety protection component is arranged at the top of the slaked lime bin;
the fluidizing device is arranged in the discharge hopper at the bottom of the slaked lime bin.
By the above-mentioned the technical scheme provided by the utility model, the embodiment of the utility model provides a lime hydrate accurate measurement feed system that domestic waste burns dry flue gas purification usefulness, its beneficial effect is:
at least two conical blanking hoppers are arranged at the bottom of the slaked lime bin, and at least two metering feeding mechanisms and two feeding mechanisms are correspondingly arranged, so that an accurate metering feeding system capable of accurately metering the output slaked lime is formed by connection. The accurate measurement of the slaked lime sprayed into the flue of each incineration line is ensured, the full-time standard emission of the flue gas of the household garbage incineration system is ensured, and the problem that the emission is influenced due to the inaccurate amount of the slaked lime sprayed into the flue gas is avoided. According to the system, the fluidization device is arranged in the blanking hopper at the bottom of the slaked lime bin, so that the problem that slaked lime bridges in the blanking hopper is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a slaked lime accurate metering and feeding system provided by an embodiment of the present invention;
in the figure: 1-slaked lime bin; 21. 22-manual gate valve; 31. 32-pneumatic gate valve; 41. 42-front soft connection; 51. 52-a metering weighing hopper; 61. 62-rear flexible connection; 71. 72-star feeder; 81. 82-Roots blower; 91. 92-a venturi ejector; 10-ash bin weighing device; 11-a fluidizing device; 12-a safety valve; 13-dust remover on top of the bin.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
As shown in figure 1, the embodiment of the utility model provides a pair of lime hydrate accurate measurement feed system that domestic waste burns dry flue gas cleaning usefulness, include:
the system comprises a slaked lime bin, at least two metering and feeding mechanisms, at least two feeding mechanisms, an ash bin weighing device, a safety protection assembly and a fluidizing device; wherein,
the bottom of the slaked lime bin is respectively provided with at least two conical blanking hoppers, the bottom of each conical blanking hopper is provided with a blanking port, and the blanking port at the bottom of each conical blanking hopper is sequentially connected with a metering feeding mechanism and a feeding mechanism;
the bottom of the slaked lime bin is provided with the ash bin weighing device;
the safety protection component is arranged at the top of the slaked lime bin;
the fluidizing device is arranged in the discharge hopper at the bottom of the slaked lime bin.
In the above-mentioned feed system, every measurement feed mechanism includes: the automatic weighing device comprises a manual gate valve, a pneumatic gate valve, a front flexible connection, a metering weighing hopper, a rear flexible connection and a star-shaped feeder which are sequentially connected. The star-shaped feeder can ensure uniform, stable and continuous feeding to the feeding mechanism and prevent return air generated by the venturi ejector main pipeline of the feeding mechanism.
Among the above-mentioned feed system, the measurement is weighed and is fought and includes:
the temporary storage hopper, the variable-frequency screw conveyor and the weighing sensor are arranged; the temporary storage hopper is positioned above the variable-frequency screw conveyor;
the weighing sensor is arranged on the temporary storage hopper.
In the feeding system, three sets of weighing sensors are uniformly distributed at the bottom of the ear seat of the temporary storage hopper.
In the feeding system, the variable-frequency screw conveyor adopts a variable-frequency motor.
In the above-mentioned feed system, every feeding mechanism includes: and the Roots blower is connected with the Venturi ejector through a pipeline, and the feed inlet of the Venturi ejector is connected with the star-shaped feeder of the metering and feeding mechanism connected with the Venturi ejector.
In the above-mentioned feed system, the fluidizing device includes: the fluidization plate is arranged in a discharge hopper at the bottom of the slaked lime bin and is connected with an air compressor outside the slaked lime bin.
In above-mentioned feed system, the safety protection subassembly includes: and the safety valve and the bin top dust remover are respectively arranged at the top of the slaked lime bin.
In the feeding system, a rapping device is arranged on each conical blanking hopper at the bottom of the slaked lime bin.
Among the above-mentioned feed system, ash bin weighing device includes:
and four sets of weighing sensors are uniformly distributed on the bottom of the slaked lime bin.
Further, in the above feeding system, the method further includes: and the control device is electrically connected with each metering feeding mechanism, each feeding mechanism, the ash bin weighing device, the safety protection assembly and the fluidizing device respectively and can control the operation of each device.
In the above-mentioned accurate measurement of slaked lime feeding system, the effect of each device is as follows:
a slaked lime bin: the device is used for storing the slaked lime, the slaked lime is pumped into a storage bin in a tank car pneumatic conveying mode, a bin top dust remover and a safety valve are arranged at the bin top, a weighing device is arranged at a slaked lime bin support for measuring the consumption total weight of the slaked lime, 4 sets of weighing sensors are arranged, discharging hoppers are arranged according to the number of burning lines, 2 discharging hoppers are arranged in the device by taking 2 burning lines as an example, each hopper is provided with a fluidization plate and a rapping device, and the fluidization plate is used for compressing air to enable the slaked lime in the bin to be in a fluidization state so as to avoid bridging;
each metering and feeding mechanism comprises:
manual gate valve: the bottom of the ash bucket is provided with a manual gate valve which is used for closing a slaked lime descending channel when bottom equipment is overhauled;
pneumatic gate valve: the bottom of the manual gate valve is provided with a pneumatic gate valve which is used for feeding into the weighing hopper and stopping feeding.
Soft connection: the upper part and the lower part of the weighing hopper are provided with flexible connections, and the functions of the weighing hopper are to ensure that a weighing system is independent and is not influenced by external force, so that the weighing accuracy is ensured;
a metering and weighing hopper: the lime slaking machine is composed of a temporary storage hopper, a spiral conveyor and weighing sensors, wherein the spiral conveyor is positioned at the bottom of the weighing hopper, the feeding speed of slaked lime can be adjusted by adjusting the rotating speed through a variable frequency motor, and three sets of weighing sensors are arranged at the bottom of the ear seat of the weighing hopper.
In each feeding mechanism:
venturi ejector: the positive pressure air flow sent by the Roots blower passes through the Venturi ejector to form high-speed air flow locally, the pipeline at the upper part of the Venturi ejector forms negative pressure, slaked lime is brought into the main pipeline through the negative pressure, and the slaked lime is sprayed into a flue in front of the bag-type dust collector through the air flow.
Roots blower: providing a positive pressure gas stream.
The utility model discloses a feed system has realized spouting into the lime hydrate in the flue and can the accurate measurement, ensures that pollutant full time period is up to standard to discharge.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in figure 1, the feeding system of the utility model comprises a slaked lime bin, a fluidizing device, a manual gate valve, a pneumatic gate valve, a flexible connection, a metering weighing hopper, a star-shaped feeder, a Roots blower, a Venturi ejector and an ash bin weighing device. When the device is used, slaked lime is pneumatically conveyed and fed by a tank truck and stored in a slaked lime bin 1, a bin top dust remover and a safety valve (the two form a safety protection component) are arranged at the bin top, an ash bin weighing device 10 is arranged at the support of the slaked lime bin for measuring the consumption total weight of the slaked lime, four sets of weighing sensors are arranged, the number of conical blanking hoppers is set according to the number of burning lines (two conical blanking hoppers are indicated in figure 1, three, four or even more are arranged according to needs), a rapping device and a fluidization plate of a fluidization device 11 are arranged on each conical blanking hopper, and the fluidization plate has the function of enabling the slaked lime in the slaked lime bin to be in a fluidization state to avoid bridging through compressed air; slaked lime enters the metering weighing hoppers 51 and 52 from the conical blanking hoppers through the blanking channels connected with the blanking ports, the manual gate valves 21 and 22, the pneumatic gate valves 31 and 32, the front soft connections 41 and 42 and the rear soft connections 61 and 62 are sequentially arranged on the blanking channels, the manual gate valves 21 and 22 are used for cutting off the slaked lime blanking channels during maintenance, the pneumatic gate valves 31 and 32 are used for feeding into the metering weighing hoppers and stopping feeding, the upper parts and the lower parts of the metering weighing hoppers 51 and 52 are respectively provided with the front soft connection and the rear soft connection, so that the metering weighing hoppers 51 and 52 are independent and are not influenced by external force, and the weighing accuracy is ensured; setting a feeding weight value (low position) and a stopping feeding weight value (high position) in the control device in advance, starting the pneumatic gate valves 31 and 32 to feed into the weighing hoppers 51 and 52 when the weights displayed by the weighing sensors of the weighing hoppers 51 and 52 reach the set low position, and closing the pneumatic gate valves 31 and 32 to stop feeding when the weights displayed by the weighing sensors reach the set high position; star-shaped feeders 71 and 72 are arranged at the upper parts of the Venturi ejectors 91 and 92 to feed materials to a pipeline at the upper part of the Venturi ejectors, the feeding is ensured to be uniform, return air generated by a main pipeline of the Venturi ejectors can be prevented, variable-frequency screw conveyors adopting variable-frequency motors are arranged at the bottoms of temporary storage hoppers of the metering weighing hoppers 51 and 52, and the feeding speed of slaked lime can be adjusted by adjusting the rotating speed; the positive pressure air flow sent by the Roots blowers 81 and 82 passes through the venturi ejectors 91 and 92 to form high-speed air flow locally, the pipelines at the upper parts of the venturi ejectors 91 and 92 form negative pressure, slaked lime is brought into the main pipeline through the negative pressure, and the slaked lime is sprayed into a flue in front of the bag-type dust remover through the air flow. Through the utility model discloses an implement, can solve the problem of spouting the unable measurement of lime hydrate in the flue, realize the accurate measurement of lime hydrate, ensure that acid pollutant full period is up to standard discharges.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a lime hydrate accurate measurement feed system that domestic waste burns dry process gas cleaning usefulness which characterized in that includes:
the system comprises a slaked lime bin, at least two metering and feeding mechanisms, at least two feeding mechanisms, an ash bin weighing device, a safety protection assembly and a fluidizing device; wherein,
the bottom of the slaked lime bin is respectively provided with at least two conical blanking hoppers, the bottom of each conical blanking hopper is provided with a blanking port, and the blanking port at the bottom of each conical blanking hopper is sequentially connected with a metering feeding mechanism and a feeding mechanism;
the bottom of the slaked lime bin is provided with the ash bin weighing device;
the safety protection component is arranged at the top of the slaked lime bin;
the fluidizing device is arranged in the discharge hopper at the bottom of the slaked lime bin.
2. The system for accurately metering and feeding the slaked lime for dry flue gas purification by incinerating the household garbage according to claim 1, wherein each metering and feeding mechanism in the system comprises: the automatic weighing device comprises a manual gate valve, a pneumatic gate valve, a front flexible connection, a metering weighing hopper, a rear flexible connection and a star-shaped feeder which are sequentially connected.
3. The system for accurately metering and feeding the slaked lime for dry flue gas purification by incinerating the household garbage according to claim 2, wherein the metering and weighing hopper comprises:
the temporary storage hopper, the variable-frequency screw conveyor and the weighing sensor are arranged; the temporary storage hopper is positioned above the variable-frequency screw conveyor;
the weighing sensor is arranged on the temporary storage hopper.
4. The system of claim 3, wherein the three sets of weighing sensors are uniformly distributed at the bottom of the ear seat of the temporary storage hopper.
5. The system of claim 3, wherein the variable frequency screw conveyor is a variable frequency motor.
6. The system for accurately metering and feeding the slaked lime for dry flue gas purification by incinerating the household garbage according to claim 1 or 2, wherein each feeding mechanism in the system comprises: and the Roots blower is connected with the Venturi ejector through a pipeline, and the feed inlet of the Venturi ejector is connected with the star-shaped feeder of the metering and feeding mechanism connected with the Venturi ejector.
7. The precise metering feeding system of slaked lime for dry flue gas purification of domestic waste incineration according to claim 1 or 2, characterized in that the fluidizing device comprises: the fluidization plate is arranged in a discharge hopper at the bottom of the slaked lime bin and is connected with an air compressor outside the slaked lime bin.
8. The precise metering and feeding system for slaked lime used in dry flue gas purification by incineration of household garbage according to claim 1 or 2, wherein the safety protection assembly comprises: and the safety valve and the bin top dust remover are respectively arranged at the top of the slaked lime bin.
9. A slaked lime accurate-metering feeding system for dry flue gas purification by household garbage incineration according to claim 1 or 2, characterized in that a rapping device is arranged on each conical blanking hopper at the bottom of the slaked lime bin.
10. The precise metering and feeding system for slaked lime used in dry flue gas purification by incineration of household garbage according to claim 1 or 2, wherein the ash bin weighing device comprises:
and four sets of weighing sensors are uniformly distributed on the bottom of the slaked lime bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822216233.1U CN209612626U (en) | 2018-12-27 | 2018-12-27 | The calcium hydroxide accurate measurement feeding system of consumer waste incineration dry FGD process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822216233.1U CN209612626U (en) | 2018-12-27 | 2018-12-27 | The calcium hydroxide accurate measurement feeding system of consumer waste incineration dry FGD process |
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| CN209612626U true CN209612626U (en) | 2019-11-12 |
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| CN201822216233.1U Active CN209612626U (en) | 2018-12-27 | 2018-12-27 | The calcium hydroxide accurate measurement feeding system of consumer waste incineration dry FGD process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054262A (en) * | 2019-12-31 | 2020-04-24 | 西安西矿环保科技有限公司 | Automatic proportioning pulping system and method |
| CN113769546A (en) * | 2021-09-26 | 2021-12-10 | 漳州市圣元环保电力有限公司 | Automatic desulfurization control device |
| CN117046224A (en) * | 2023-10-11 | 2023-11-14 | 北京利德衡环保工程有限公司 | Unpowered bin top dust remover for desulfurization slaked lime |
-
2018
- 2018-12-27 CN CN201822216233.1U patent/CN209612626U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054262A (en) * | 2019-12-31 | 2020-04-24 | 西安西矿环保科技有限公司 | Automatic proportioning pulping system and method |
| CN113769546A (en) * | 2021-09-26 | 2021-12-10 | 漳州市圣元环保电力有限公司 | Automatic desulfurization control device |
| CN117046224A (en) * | 2023-10-11 | 2023-11-14 | 北京利德衡环保工程有限公司 | Unpowered bin top dust remover for desulfurization slaked lime |
| CN117046224B (en) * | 2023-10-11 | 2024-01-26 | 北京利德衡环保工程有限公司 | Unpowered bin top dust remover for desulfurization slaked lime |
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