CN111939746A - Synergist energy-saving feeding control system and control method - Google Patents
Synergist energy-saving feeding control system and control method Download PDFInfo
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- B01D53/34—Chemical or biological purification of waste gases
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Abstract
The invention discloses a synergist energy-saving dosing control system and a control method, wherein the control system comprises a calculating device, a control device, a pit, a dosing device, a detection device and at least two circulating pumps, the output end of a monitoring device for monitoring system operation parameters is connected with the input end of the calculating device, the calculating device calculates the current optimal synergist dosing amount and/or circulating pump current value according to data transmitted by the monitoring device and sends the optimal synergist dosing amount and/or circulating pump current value to the control device, and the control device controls the circulating pumps and the dosing device to execute corresponding operations according to the calculation result of the monitoring device; the circulating pump is connected on the pipeline between the desulfurizing tower and the slurry tank, the discharge hole of the feeding device is communicated with the feed inlet of the pit, and the pit is communicated with the desulfurizing tower through the pipeline. The application of the invention can realize reasonable increase and decrease of the input amount of the desulfurization synergist of the unit and reasonable start and stop of the circulating pump, and the energy conservation and the maximum profit of the addition of the desulfurization synergist are obtained on the premise of meeting the desulfurization effect of the unit.
Description
Technical Field
The invention relates to the technical field of environmental protection and energy conservation, in particular to a system and a method for controlling the addition of a synergist of a power station boiler.
Background
In the power generation process of a thermal power plant, excessive sulfides are generated after coal in a boiler is combusted, the substances enter the atmosphere to form acid rain, and the environment is greatly damaged, so that the desulfurization treatment is usually needed to prevent the sulfides in the flue gas from polluting the environment.
With the increasing rigorous environmental requirements, a desulfurization system based on wet desulfurization is more difficult to meet the requirements of flue gas emission indexes, when the unit load is higher and the coal sulfur content is higher, the material balance maintenance of the desulfurization system becomes harder, and in addition, the frequent fluctuation of flue gas parameters causes the emission indexes to be more difficult to control, while a desulfurization synergist can improve the reaction efficiency in a desulfurization tower and ensure that the desulfurization tower has higher desulfurization efficiency and stronger stability, but the desulfurization synergist has higher price, and the excessive synergist causes poorer economic benefit and insignificant energy-saving effect. In order to solve the problems of manual addition, incapability of estimating the addition amount, high price and the like of the desulfurization synergist, the research on a synergist addition control system and method for solving the problems of automatic addition, dosage calculation and the like of the synergist becomes very significant.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a synergist energy-saving adding control system and a control method, which are used for calculating the dosage of a synergist, adjusting the addition amount and automatically adding the synergist into a desulfurizing tower, so that the energy conservation and the maximum benefit of adding a desulfurizing synergist can be realized on the premise of meeting the desulfurizing effect of a unit.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
An energy-saving synergist adding control system comprises a calculating device, a control device, a pit, an adding device, a detection device and at least two circulating pumps, wherein the output end of a monitoring device for monitoring the operation parameters of the system is connected with the input end of the calculating device; the circulating pump is connected on the pipeline between the desulfurizing tower and the slurry tank, the discharge hole of the feeding device is communicated with the feed inlet of the pit, and the pit is communicated with the desulfurizing tower through the pipeline.
The energy-saving synergist adding control system comprises a pesticide storage box and a negative pressure feeder, wherein the negative pressure feeder is arranged above the pesticide storage box and is communicated with the pesticide storage box up and down; the bottom of the medicament storage box is provided with a spiral discharger, and the feeding device further comprises an electric cabinet for controlling the suction machine and the spiral discharger to work.
The energy-saving synergist adding control system comprises the operating parameters of the desulfurization tower efficiency, the boiler coal feeding quantity, the boiler load, the hearth outlet oxygen quantity and the desulfurization tower inlet SO2Concentration, boiler evaporation capacity, circulating pump current and synergist dosage.
An energy-saving synergist adding control method is realized based on the energy-saving synergist adding control system of any one of claims 1 to 3, and specifically comprises the following steps:
A. each device of the monitoring device monitors corresponding numerical values in real time and transmits the numerical values to the computing device,
B. the calculation device calculates according to the received monitoring value and determines an adjustment scheme to send to the control device;
C. and the control device controls the feeding device and the circulating pump to adjust the working state according to the execution instruction.
In the energy-saving synergist adding control method, the calculation method in the step B specifically comprises the following steps:
B1. firstly, determining the number of circulating pumps which need to be put into operation between a slurry pool and a desulfurizing tower and determining the equivalent Q of a synergist according to the load rate of a unit and the total number of the circulating pumpsT；
The running number of the circulating pumps is equal to the total number of the circulating pumps multiplied by the load rate of the unit;
according to the synergist operation test, comparing the change of the operation quantity of the circulating pump of the desulfurization system caused by the operation and the non-operation of the adding device under different working conditions to determine the equivalent Q of the synergistT；
B2. Secondly, determining whether to put the feeding device into operation or not according to the actual load of the unit and the monitored desulfurization efficiency of the desulfurization tower;
B3. and after the adding device is put into operation, determining the adding amount of the synergist according to the actual load of the unit.
According to the energy-saving synergist adding control method, the adding device is added when and only when the unit load is greater than 60% of rated load and the desulfurization efficiency is lower than 99%, and the method for calculating the adding amount of the synergist after the adding device is added comprises the following steps:
B31. firstly, determining the optimal adding amount when the unit load rate is 50% as a basic adding amount Q,
B32. after the adding device is put into operation, firstly adding the synergist into the desulfurizing tower at the adding amount of 2Q/h, and continuously operating for 36 hours;
B33. judging the load of the unit, and keeping the adding amount of the synergist at 2Q/h when the load of the unit is higher than 80%; when the unit load is higher than 60% and lower than 80%, the adding amount of the synergist is changed to 1.5Q/h; when the load of the unit is lower than 60%, the adding amount of the synergist is changed into Q/h;
B34. when the adding device is in a commissioning state and the desulfurization efficiency is lower than 99%, additionally starting a circulating pump; when the circulating pump is completely started and the desulfurization is less than 99%, the adding amount of the synergist is adjusted to 2.5Q/h and the operation is continued for 8 hours;
B35. when the desulfurization efficiency is more than 99.5 percent, the adding amount of the synergist is more than QTAnd stopping the circulation pump 1.
In the energy-saving synergist adding control method, after the adding amount of the synergist is determined, the monitoring data is read every other hour, the number of the circulating pumps and the adding amount are optimized according to the read monitoring data by adopting the following formula,
the addition execution quantity is the addition calculated quantity multiplied by the coal supply quantity multiplied by the oxygen quantity multiplied by SO2Concentration/(rated coal quantity x unit load factor x 6% × SO)2Design concentration).
In the energy-saving synergist adding control method, the optimal adding amount is determined by an experiment within 4 hours, namely when the unit load rate is 50%, the number of the circulating pumps is unchanged, and the adding amount of the synergist when the desulfurization efficiency is not increased any more is determined as the basic adding amount Q.
Due to the adoption of the technical scheme, the technical progress of the invention is as follows.
The application of the invention can realize reasonable increase and decrease of the adding amount of the desulfurization synergist of the unit and reasonable start and stop of the circulating pump, reduce the energy consumption of the desulfurization system of the unit while reducing the using amount of the synergist, and further improve the desulfurization output of the desulfurization system through reasonable combination of the synergist and the circulating pump, thereby obtaining the energy saving and maximum benefit of the addition of the desulfurization synergist on the premise of meeting the desulfurization effect of the unit.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a control flow diagram of the present invention;
FIG. 3 is a schematic structural diagram of the feeding device of the present invention;
wherein: 1. the system comprises a desulfurizing tower, a pit, a feeding device, a control device, a calculating device, a monitoring device, a first circulating pump and a second circulating pump, wherein the desulfurizing tower comprises 2 parts of the pit, 3 parts of the feeding device, 4 parts of the control device, 5 parts of the calculating device, 6 parts of the monitoring device, 7 parts of the first circulating pump and 8 parts of the second circulating pump;
31. electrical cabinet, 32 suction machine, 33 negative pressure feeder, 34 feeding pipe, 35 medicament bin, 36 vibration feeder, 37 medicament storage box, 38 pressure regulating valve, 39 screw discharger.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
An energy-saving synergist adding control system is structurally shown in figure 1 and comprises a computing device, a control device, a pit, an adding device, a detection device and at least two circulating pumps; the circulating pump is connected on a pipeline between the desulfurizing tower and the slurry tank, a discharge hole of the feeding device is communicated with a feed inlet of a pit, and the pit is communicated with the desulfurizing tower through the pipeline; the output end of the monitoring device is connected with the input end of the calculating device, the output end of the calculating device is connected with the input end of the control device, and the output end of the control device is respectively connected with the controlled ends of the feeding device and the circulating pumps.
The monitoring device is used for monitoring the operation parameters of the system, and the system operation parameters comprise the efficiency of the desulfurizing tower, the coal feeding amount of the boiler, the load of the boiler, the oxygen amount of the outlet of the hearth and the SO of the inlet of the desulfurizing tower2Concentration, boiler evaporation capacity, circulating pump current and synergist adding amount; the calculation device calculates the current optimal synergist adding amount and/or circulating pump current value according to the data transmitted by the monitoring device and sends the optimal synergist adding amount and/or circulating pump current value to the control device, and the control device controls the circulating pump and the adding device to execute corresponding operations according to the calculation result of the monitoring device.
The structure of the feeder device is shown in fig. 3, and the feeder device comprises an electrical cabinet 31, a suction machine 32, a negative pressure feeder 33, a medicament storage box 37, a medicament bin 35 and a feeding pipe 34, wherein the negative pressure feeder 33 is arranged above the medicament storage box and is vertically communicated with the medicament storage box.
The feed inlet of the negative pressure feeder is communicated with a medicament bin 35 for storing the desulfurization synergist through a feed pipe 34, and the tail end of the feed pipe inserted into the medicament bin is connected with a suction head with a hand valve; the negative pressure end of the negative pressure feeder is communicated with the suction machine 32 through a pipeline, and a vibration feeder 36 is arranged between the negative pressure feeder and the medicament storage box. The negative pressure feeder is used for sucking in the desulfurization synergist in the agent bin under the negative pressure effect, and conveying the desulfurization synergist into the agent storage box below under the action of the vibration feeder to finish the feeding operation. Wherein the material suction head can be a material suction head for a tank car or a tank car, and can also be a material suction head for an open-air medicament pile or a medicament bag; the suction head with the hand valve can be closed when the device does not work, so that moisture absorption is avoided.
The agent storage box is used for storing the desulfurization synergist, and the bottom of the agent storage box is provided with a spiral discharger 39 for discharging materials into the pit. For preventing that bold medicament whereabouts from blockking up screw discharger, transversely set up the thick grid of multilayer in the medicament bin to be provided with vibrating motor on the outer wall of medicament bin, the output of regulator cubicle is connected to vibrating motor's input. When the desulfurization synergist falls down, the desulfurization synergist is blocked by the coarse grating and simultaneously combined with the vibration generated by the vibration motor, so that the generation of large-block medicaments can be avoided.
For preventing that the medicament from piling up too much in the medicament bin, set up the charge level indicator in the medicament bin for detect the height of medicament, the input of regulator cubicle is connected to the output of charge level indicator. The working states of the suction machine, the negative pressure feeder and the vibration feeder are determined by the electrical cabinet according to the height of the medicament in the medicament storage box.
The inner wall of the spiral feeder is provided with a heat preservation layer and a temperature sensor for monitoring the temperature in the spiral feeder, a heating wire is embedded in the heat preservation layer, the output end of the temperature sensor is connected with the input end of the electrical cabinet, and the output end of the electrical cabinet is connected with the controlled end of the heating wire. The temperature in the spiral feeder can be guaranteed by arranging the heater and the temperature sensor, and the phenomenon that the discharging is affected due to the fact that the medicament is wet and hardened is prevented.
The top end covers of the medicament bin, the negative pressure feeder and the medicament storage box are respectively provided with a pressure regulating valve 38 and a pressure sensor, the output end of each pressure sensor is respectively connected with the input end of an electrical cabinet, and the output end of the electrical cabinet is respectively connected with the controlled end of each pressure regulating valve. The pressure regulating valve is arranged, so that the inner cavity of the equipment can be kept sealed relative to the atmospheric environment, and the internal medicament is prevented from absorbing moisture from the atmosphere and being agglomerated; and a pressure sensor is arranged for monitoring the pressure value of the inner cavity and ensuring the safe operation of the device.
Because the desulfurization synergist is chemical substance, can corrode the device, and the negative pressure feeder, the feeding pipe, the medicament bin and the medicament storage box are all made of anticorrosive materials.
The electrical cabinet is used for controlling the automatic operation of the device, and realizes the automatic addition of the desulfurization synergist. A PLC controller and a liquid crystal touch screen are arranged in the electric cabinet, and the PLC controller is interconnected with the liquid crystal touch screen; the input end of the PLC controller is respectively connected with the output ends of the sensors, the PLC controller is respectively connected with the controlled ends of the suction machine, the vibration blanking device and the spiral discharger and used for automatically controlling the feeding, discharging and blanking operations, and the liquid crystal touch screen is used for displaying the running state of the device. The PLC is also connected with the output end of a control device of the feeding control system, and the automatic feeding operation is completed under the instruction of the control device.
When the feeding device works, the PLC controller controls the suction machine to start, so that the negative pressure feeder maintains the working pressure, and the desulfurization synergist solid powder is sucked from the agent bin through the feeding pipe; after the operation is carried out for a set time, the suction machine stops working, and blanking and material storage are carried out; the PLC below the negative pressure feeder drives the plugboard to be opened through the air cylinder, and the vibration feeder is used for discharging and storing the desulfurization synergist solid powder into the medicament storage box. Thus, the steps of feeding, blanking and storing are repeated. The material level meter in the medicament storage box can display the material level height in real time, and the feeding is automatically stopped when the material level meter is in a high limit. When the materials are discharged and fed into the pit of the desulfurizing tower area, the PLC controller accurately controls the driving motor of the screw feeder, and the precision error value is not higher than +/-1%.
The invention also provides a control method based on the efficient agent energy-saving dosing control system, the flow of which is shown in figure 2, and the control method is explained in detail by combining with specific embodiments. In the embodiment, the feeding control system and the control method are applied to a certain 600MW power plant, the rated coal feeding amount of a unit is 180t/h, the oxygen amount set value of a hearth outlet is 3.5%, and SO is fed to a desulfurizing tower inlet2The concentration is 3000mg/Nm3The circulating pumps 6 are specifically controlled as follows.
A. And each device of the monitoring device monitors corresponding numerical values in real time and transmits the numerical values to the computing device.
B. And the computing device performs computation according to the received monitoring value, determines an adjusting scheme and sends the adjusting scheme to the control device.
B1. Firstly, determining the number of circulating pumps which need to be put into operation between a slurry pool and a desulfurizing tower according to the rated load of a unit and the total number of the circulating pumps; and determining the synergist equivalent Q according to the synergist operation testT。
The running number of the circulating pumps is equal to the total number of the circulating pumps multiplied by the load rate of the unit.
According to the synergist operation test, comparing the change of the operation quantity of the circulating pump of the desulfurization system caused by the operation and the non-operation of the adding device under different working conditions to determine the equivalent Q of the synergistT。
When the unit meets 600MW electric load, the running number of circulating pumps of the desulfurization system is 6, and the inlet SO of the desulfurization tower2The concentration is 3000mg/Nm3Recording the desulfurization efficiency to be 99%, starting to add the synergist, increasing the desulfurization efficiency to be 99.3%, stopping running 1 circulating pump after the effect of the synergist is stable, observing the change of the desulfurization efficiency, falling the desulfurization efficiency to 99%, and recording the adding amount of the synergist to be QTI.e. synergist equivalent QTIt was 250 kg/h.
B2. Secondly, determining whether to put the feeding device into operation or not according to the actual load of the unit and the monitored desulfurization efficiency of the desulfurization tower; and the adding device is put into operation if and only if the unit load is more than 60% of rated load and the desulfurization efficiency is less than 99%. When the load of the unit reaches 600MW, the SO of the desulfurizing tower2The concentration is 4000mg/Nm3And the desulfurization efficiency is reduced to 98.9 percent, and the adding device is put into operation.
B3. And after the adding device is put into operation, determining the adding amount of the synergist according to the actual load of the unit. The method for calculating the adding amount of the synergist after the adding device is put into operation is as follows.
B31. Firstly, the optimal adding amount when the unit load rate is 50% is determined as a basic adding amount Q. The optimum addition is determined by experiments for a period of 4 hours, i.e. the addition when the number of circulating pumps is unchanged and the efficiency of the synergist is such that the desulfurization efficiency does not increase any more is determined as the basic addition Q at a unit load rate of 50%.
In this embodiment, when the unit satisfies 300MW electrical load, the desulfurization system normally operates 3 circulating pumps, the inlet SO of the desulfurizing tower2The concentration is 3000mg/Nm3And (3) adding the synergist, and taking the data as the basic adding amount Q when the adding amount of the synergist is 200kg/h after the effect of the synergist is stable.
B32. After the adding device is put into operation, firstly adding the synergist into the desulfurizing tower in an adding amount of 2Q/h, and continuously operating for 36 hours. In this example, the synergist was dosed at 2Q, i.e. 400kg/h, for 36 hours.
B33. Judging the load of the unit, and keeping the adding amount of the synergist at 2Q/h when the load of the unit is higher than 80%; when the unit load is higher than 60% and lower than 80%, the adding amount of the synergist is changed to 1.5Q/h; when the unit load is lower than 60%, the adding amount of the synergist is changed into Q/h.
B34. When the adding device is in a commissioning state and the desulfurization efficiency is lower than 99%, additionally starting a circulating pump; when the circulating pump is fully started and the desulfurization efficiency is less than 99%, the adding amount of the synergist is adjusted to be 2.5Q/h and the operation is continued for 8 hours.
After the adding amount of the synergist is determined, reading monitoring data every hour, and optimizing the number of the circulating pumps and the adding amount according to the read monitoring data by adopting the following formula:
the addition execution quantity is the addition calculated quantity multiplied by the coal supply quantity multiplied by the oxygen quantity multiplied by SO2Concentration/(rated coal quantity x unit load factor x 6% × SO)2Design concentration).
B35. When the desulfurization efficiency is more than 99.5 percent and the adding execution amount is more than QTAnd stopping the circulation pump 1.
For example, when the unit load is reduced to 60%, the coal feeding amount is 110t/h, the actual furnace outlet oxygen amount is 4%, and SO2The concentration is 3500mg/Nm3And 3 circulating pumps are put into operation, the adding amount of the synergist calculated by the calculating device is Q, and the actual adding execution amount is optimized to be 1.35Q through the formula. If the unit load reaches 600MW, the desulfurizing tower SO2The concentration is 5000mg/Nm3And the desulfurization efficiency is reduced to 98.9 percent, all circulating pumps are put into operation, the coal feeding amount is 190t/h, the actual oxygen amount at the outlet of the hearth is 2 percent, the adding calculated amount of the desulfurizing tower is 2.5Q at the moment, and the actual adding execution amount is optimized to be 2.51Q through the formula.
If the unit load reaches 600MW, the desulfurizing tower SO2The concentration is 3000mg/Nm3The desulfurization efficiency is as high as 99.6 percent, all circulating pumps are put into operation, the coal feeding amount is 170t/h, the actual oxygen amount at the outlet of a hearth is 2 percent, the actual feeding execution amount is 2.51Q, and the feeding amount is more than the equivalent Q of the synergistTAt this time, the circulation pump 1 is stopped.
C. And the control device adjusts the working states of the adding device and the circulating pump according to the adding amount of the synergist at the output end of the computing device and the adding amount of the circulating pump.
Claims (8)
1. The energy-saving synergist adding control system is characterized in that: the device comprises a calculating device, a control device, a pit, a feeding device, a detection device and at least two circulating pumps, wherein the output end of the monitoring device for monitoring the operation parameters of the system is connected with the input end of the calculating device; the circulating pump is connected on the pipeline between the desulfurizing tower and the slurry tank, the discharge hole of the feeding device is communicated with the feed inlet of the pit, and the pit is communicated with the desulfurizing tower through the pipeline.
2. The energy-saving synergist adding control system according to claim 1, characterized in that: the feeding device comprises a medicament storage box (37) and a negative pressure feeder (33) which is arranged above the medicament storage box and is communicated with the medicament storage box up and down, a feeding hole of the negative pressure feeder is communicated with a medicament bin (35) for storing the desulfurization synergist through a feeding pipe (34), and a negative pressure end of the negative pressure feeder is communicated with a material sucking machine (32) through a pipeline; the bottom of the medicament storage box is provided with a spiral discharger (39), and the feeding device further comprises an electric cabinet (31) for controlling the suction machine and the spiral discharger to work.
3. The energy-saving synergist adding control system according to claim 1, characterized in that: the system operation parameters comprise the efficiency of the desulfurizing tower, the coal feeding quantity of the boiler, the load of the boiler, the oxygen quantity of the outlet of the hearth and the SO of the inlet of the desulfurizing tower2Concentration, boiler evaporation capacity, circulating pump current and synergist dosage.
4. An energy-saving synergist adding control method is characterized in that the control method is realized based on the energy-saving synergist adding control system of any one of claims 1 to 3, and specifically comprises the following steps:
A. each device of the monitoring device monitors corresponding numerical values in real time and transmits the numerical values to the computing device,
B. the calculation device calculates according to the received monitoring value and determines an adjustment scheme to send to the control device;
C. and the control device controls the feeding device and the circulating pump to adjust the working state according to the execution instruction.
5. The energy-saving synergist adding control method according to claim 4, wherein the calculation method in the step B specifically comprises the following steps:
B1. firstly, determining the number of circulating pumps needing to be put into operation between a slurry pool and a desulfurizing tower and the equivalent Q of a synergist according to the load rate of a unit and the total number of the circulating pumpsT；
The running number of the circulating pumps is equal to the total number of the circulating pumps multiplied by the load rate of the unit
According to the synergist operation test, comparing the change of the operation quantity of the circulating pump of the desulfurization system caused by the operation and the non-operation of the adding device under different working conditions to determine the equivalent Q of the synergistT；
B2. Secondly, determining whether to put the feeding device into operation or not according to the actual load of the unit and the monitored desulfurization efficiency of the desulfurization tower;
B3. and after the adding device is put into operation, determining the adding amount of the synergist according to the actual load of the unit.
6. The energy-saving synergist adding control method according to claim 5, wherein the adding device is put into operation if and only if the unit load is greater than 60% of rated load and the desulfurization efficiency is less than 99%, and the method for calculating the adding amount of the synergist after the adding device is put into operation comprises the following steps:
B31. firstly, determining the optimal adding amount when the unit load rate is 50% as a basic adding amount Q,
B32. after the adding device is put into operation, firstly adding the synergist into the desulfurizing tower at the adding amount of 2Q/h, and continuously operating for 36 hours;
B33. judging the load of the unit, and keeping the adding amount of the synergist at 2Q/h when the load of the unit is higher than 80%; when the unit load is higher than 60% and lower than 80%, the adding amount of the synergist is changed to 1.5Q/h; when the load of the unit is lower than 60%, the adding amount of the synergist is changed into Q/h;
B34. when the adding device is in a commissioning state and the desulfurization efficiency is lower than 99%, additionally starting a circulating pump; when the circulating pump is completely started and the desulfurization is less than 99%, the adding amount of the synergist is adjusted to 2.5Q/h and the operation is continued for 8 hours;
B35. when the desulfurization efficiency is more than 99.5 percent, the adding amount of the synergist is more than QTAnd stopping the circulation pump 1.
7. The energy-saving synergist adding control method according to claim 6, wherein after the synergist adding amount is determined, reading monitoring data every other hour, optimizing the number of circulating pumps and the adding amount according to the read monitoring data by adopting the following formula,
the addition execution quantity is the addition calculated quantity multiplied by the coal supply quantity multiplied by the oxygen quantity multiplied by SO2Concentration/(rated coal quantity x unit load factor x 6% × SO)2Design concentration).
8. The method for controlling the energy-saving addition of the synergist according to claim 6, wherein the optimal addition amount is determined by a 4-hour experiment, namely, when the unit load rate is 50%, the number of the circulating pumps is unchanged, and the addition amount of the synergist is determined as the basic addition amount Q when the desulfurization efficiency is not increased any more.
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| CN102658008A (en) * | 2012-05-14 | 2012-09-12 | 华电电力科学研究院 | Combined device and method for desulfurization, denitrification and heavy metal ion removal |
| CN203678351U (en) * | 2013-11-06 | 2014-07-02 | 张晓宁 | Powder automatic medicine feeding device for desulfurization synergist |
| CN207375374U (en) * | 2017-09-30 | 2018-05-18 | 武汉途盛汽车零部件有限公司 | A kind of feed system of PVC granule material |
| CN108771957A (en) * | 2018-06-08 | 2018-11-09 | 武汉光谷环保科技股份有限公司 | The intelligent Loading Control System and method of wet desulphurization synergist |
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| CN113019086A (en) * | 2021-03-01 | 2021-06-25 | 浙江浙能技术研究院有限公司 | Precise feeding method of desulfurization synergist |
| CN113019086B (en) * | 2021-03-01 | 2022-05-17 | 浙江浙能技术研究院有限公司 | Precise feeding method of desulfurization synergist |
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