CN108905573A - A kind of device of flue gas of refuse burning wet process depickling - Google Patents
A kind of device of flue gas of refuse burning wet process depickling Download PDFInfo
- Publication number
- CN108905573A CN108905573A CN201810626396.9A CN201810626396A CN108905573A CN 108905573 A CN108905573 A CN 108905573A CN 201810626396 A CN201810626396 A CN 201810626396A CN 108905573 A CN108905573 A CN 108905573A
- Authority
- CN
- China
- Prior art keywords
- wet process
- recirculated water
- frequency
- circulating pump
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The present invention provides a kind of device of flue gas of refuse burning wet process depickling, and described device includes：Wet process tower；Alkalinity circulation (operating) water nozzle, is arranged in the inside of the wet process tower, for spraying alkaline recirculated water；The bottom of the wet process tower is arranged in smoke inlet；The top of the wet process tower is arranged in exhanst gas outlet；And frequency variable circulating pump, the outside of the wet process tower is set, for the detected value according to the sour gas of the exhanst gas outlet, by adjusting the frequency of the frequency variable circulating pump, to adjust the flow for the alkaline recirculated water that the alkalinity circulation (operating) water nozzle sprays.The apparatus according to the invention, using frequency variable circulating pump, according to the detected value of the sour gas of the exhanst gas outlet, by the frequency for adjusting the frequency variable circulating pump, realize the adjustment of the flow for the alkaline recirculated water that the alkalinity circulation (operating) water nozzle sprays, therefore, the flow of alkaline recirculated water can be automatically adjusted according to fume indication, make flue gas emission norm controlling in the range of requiring.
Description
Technical field
The present invention relates to technical field of waste incineration, in particular to a kind of dress of flue gas of refuse burning wet process depickling
It sets.
Background technique
With the development of the social economy, the Industrial Solid Waste amount generated in enterprise production process is growing day by day, industrial solid is useless
Object to ecological environment there is serious pollution, set and will leave pole to people's health, environment and economic development by such as improper conduct oneself well
Big hidden danger.The incineration flue gas that burning process generates, pollutant emission are main depending on incinerating waste material ingredient and burning process condition
There are imperfect combustion object, flue dust, sour gas (such as SO2), organic gas, heavy metal and dioxins materials, it is necessary into
Row fume treatment could discharge after up to standard.
In the device of current flue gas of refuse burning wet process depickling, alkaline recirculated water is by circulating pump inside wet process tower
Sprayed by spray nozzle, flue gas from bottom to top by wet process tower, atomized buck, and neutralized, reached with buck
To the purpose for absorbing acid gas in flue gas, but at present, the flow of alkaline recirculated water cannot be adjusted automatically and reasonably, i.e., can not basis
The index of exhanst gas outlet rationally adjusts the flow of recirculated water, leads to the SO for discharging flue gas2Index is unstable.
Therefore, it is necessary to provide a kind of device of flue gas of refuse burning wet process depickling, to solve the above technical problems.
Summary of the invention
A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into
One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed
Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.
For current deficiency, the present invention provides a kind of device of flue gas of refuse burning wet process depickling, including：Wet process tower；
Alkalinity circulation (operating) water nozzle, is arranged in the inside of the wet process tower, for spraying alkaline recirculated water；Smoke inlet is arranged described
The bottom of wet process tower；The top of the wet process tower is arranged in exhanst gas outlet；And frequency variable circulating pump, the wet process tower is set
Outside, for the detected value according to the sour gas of the exhanst gas outlet, by adjusting the frequency of the frequency variable circulating pump, to adjust
The flow for the alkaline recirculated water that the whole alkalinity circulation (operating) water nozzle sprays.
Further, when the detected value of the sour gas of the exhanst gas outlet is greater than target value, the frequency variable circulating pump
Frequency increases, to increase the flow of the alkaline recirculated water.
Further, when the detected value of the sour gas of the exhanst gas outlet is less than target value, the frequency variable circulating pump
Frequency reduces, to reduce the flow of the alkaline recirculated water.
Further, the flow for the alkaline recirculated water that the alkalinity circulation (operating) water nozzle sprays passes through cas PID control system
System is controlled.
Further, the cas PID control system includes main control loop and sub-control circuit, the main control loop packet
The control loop of fume indication is included, the sub-control circuit includes the control loop of alkaline recirculated water.
Further, the given value of the main control loop is the target value of the sour gas of the exhanst gas outlet, the master
The value of feedback of control loop is the detected value of the sour gas of the exhanst gas outlet, the output buck flow of the main control loop
Range percentage.
Further, the given value in the sub-control circuit is that the percentage of the output of the main control loop and the pair are controlled
The product of the range of the flow of the alkaline recirculated water in circuit processed, the value of feedback in the sub-control circuit are the alkalinity circulation
The instantaneous flow of water, the output in the sub-control circuit are the frequency given value of the frequency variable circulating pump.
Further, the sour gas of the exhanst gas outlet includes SO2。
Further, the alkaline recirculated water includes NaOH recirculated water.
Further, the frequency variable circulating pump includes frequency converter.
In conclusion the device of flue gas of refuse burning wet process depickling according to the present invention, using frequency variable circulating pump, according to institute
The detected value for stating the sour gas of exhanst gas outlet realizes the alkaline recirculated water by adjusting the frequency of the frequency variable circulating pump
The adjustment of the flow for the alkaline recirculated water that nozzle sprays, therefore, the flow of alkaline recirculated water can according to fume indication into
Row adjust automatically makes flue gas emission norm controlling in the range of requiring.
Detailed description of the invention
Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair
Bright embodiment and its description, principle used to explain the present invention.
In attached drawing：
Fig. 1 is the structural schematic diagram of the device of the flue gas of refuse burning wet process depickling of the embodiment of the present invention；
Fig. 2 is the control principle of the flow that alkaline recirculated water is controlled by cas PID control system of the embodiment of the present invention
Figure.
Description of symbols：
100, the device 101, wet process tower of flue gas of refuse burning wet process depickling
102, alkalinity circulation (operating) water nozzle 103, smoke inlet
104, exhanst gas outlet 105, frequency variable circulating pump
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, specific embodiment will be proposed in following description, to illustrate the present invention
How to improve presently, there are the problem of.Obviously, execution of the invention is not limited to the spy that those skilled in the art is familiar with
Different details.Presently preferred embodiments of the present invention is described in detail as follows, however other than these detailed descriptions, the present invention can also have
Other embodiments.
It should be understood that when the term " comprising " and/or " including " is used in this specification, indicating described in presence
Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety,
Step, operation, element, component and/or their combination.
In the device of current flue gas of refuse burning wet process depickling, alkaline recirculated water is by circulating pump inside wet process tower
Sprayed by spray nozzle, flue gas from bottom to top by wet process tower, atomized buck, and neutralized, reached with buck
To the purpose for absorbing acid gas in flue gas, but at present, the flow of alkaline recirculated water cannot be adjusted automatically and reasonably, i.e., can not basis
The index of exhanst gas outlet rationally adjusts the flow of recirculated water, leads to the SO for discharging flue gas2Index is unstable.
Exemplary embodiment
Fig. 1 shows a kind of structural representation of the device 100 of flue gas of refuse burning wet process depickling of the embodiment of the present invention
Figure.The device 100 of the flue gas of refuse burning wet process depickling is specifically described referring to Fig. 1.
As shown in Figure 1, the present invention provides a kind of device 100 of flue gas of refuse burning wet process depickling, including：Wet process tower 101；
Alkalinity circulation (operating) water nozzle 102, is arranged in the inside of the wet process tower 101, for spraying alkaline recirculated water；Smoke inlet 103, if
It sets in the bottom of the wet process tower 101；The top of the wet process tower 101 is arranged in exhanst gas outlet 104；And frequency variable circulating pump
105, the outside of the wet process tower 101 is set, for the detected value according to the sour gas of the exhanst gas outlet 104, is passed through
The frequency of the frequency variable circulating pump 105 is adjusted, to adjust the alkaline alkaline recirculated water for recycling the ejection of (operating) water nozzle 102
Flow, and the frequency variable circulating pump 105 includes frequency converter (not shown), by adjusting the frequency of the frequency converter, to adjust
The frequency of the frequency variable circulating pump 105.
The device of flue gas of refuse burning wet process depickling according to the present invention, using frequency variable circulating pump 105, according to the flue gas
The detected value of the sour gas of outlet realizes the alkalinity circulation (operating) water nozzle by adjusting the frequency of the frequency variable circulating pump 105
The adjustment of the flow of the 102 alkaline recirculated waters sprayed, therefore, the flow of alkaline recirculated water can be carried out according to fume indication
Adjust automatically makes flue gas emission norm controlling in the range of requiring.
Wherein, the sour gas of the exhanst gas outlet 104 includes SO2, the alkalinity circulation (operating) water nozzle 102 sprays described
Alkaline recirculated water includes NaOH recirculated water.
Specifically, in the sour gas (SO of the exhanst gas outlet 1042) detected value be greater than target value when, the frequency conversion
The frequency of circulating pump 105 increases, to increase the flow of the alkaline recirculated water (NaOH recirculated water)；In the exhanst gas outlet 104
Sour gas (SO2) detected value when being less than target value, the frequency of the frequency variable circulating pump 105 reduces, to reduce the alkali
The flow of property recirculated water (NaOH recirculated water).
Further, the flow for the alkaline recirculated water that the alkalinity circulation (operating) water nozzle 102 sprays passes through cascade PID control
System processed is controlled.
Fig. 2 shows the control principle drawings for the flow that alkaline recirculated water is controlled by cas PID control system.Such as Fig. 2 institute
Show, the cas PID control system includes main control loop and sub-control circuit, and the main control loop and the sub-control are returned
Road is all made of PID controller and is controlled, and the main control loop is the big fume indication (SO of hysteresis quality2) control return
Road, the sub-control circuit are the control loop of the small alkaline recirculated water (NaOH recirculated water) of hysteresis quality.
As shown in Fig. 2, the given value of the main control loop is the sour gas (SO of the exhanst gas outlet2) target
Value, the value of feedback of the main control loop are the sour gas (SO of the exhanst gas outlet2) detected value, the main control loop
Output be buck flow range percentage.
Percentage and the sub-control circuit of the given value in the sub-control circuit for the output of the main control loop
The alkaline recirculated water flow range product, as the target flow of the alkaline recirculated water (NaOH recirculated water),
The value of feedback in the sub-control circuit is the instantaneous flow of the alkaline recirculated water (NaOH recirculated water), the sub-control circuit
Output is the frequency given value of the frequency variable circulating pump.In the present embodiment, the output in the sub-control circuit is frequency converter
Frequency controls to adjust the frequency of the frequency variable circulating pump 105 by the frequency of the frequency converter, and then adjusts the alkalinity circulation
The flow for the alkaline recirculated water that (operating) water nozzle 102 sprays.
There is flue gas inspection hysteresis quality to be controlled in the present invention using cas PID control system, the sub-control
Coarse adjustment is played in circuit, and the main control loop plays fine tuning.Using cas PID control algorithm, exhanst gas outlet 104 can be made
Sour gas (SO2) stable content control in the range of requiring, avoid and control existing system using classical PID
The problem of overshoot is big, control effect is not able to satisfy norm controlling requirement.
In conclusion the device of flue gas of refuse burning wet process depickling according to the present invention, using frequency variable circulating pump, according to institute
The detected value for stating the sour gas of exhanst gas outlet, by adjusting the frequency of the frequency variable circulating pump, to adjust the alkalinity circulation
The flow for the alkaline recirculated water that (operating) water nozzle sprays, therefore, the flow of alkaline recirculated water can carry out certainly according to fume indication
Dynamic adjustment, makes flue gas emission norm controlling in the range of requiring；Using cas PID control system, exhanst gas outlet can be made
Control in the range of requiring to the stable content of sour gas.
The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to
The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Furthermore those skilled in the art
It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also be made more kinds of member
Variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention by
The appended claims and its equivalent scope are defined.
Claims (10)
1. a kind of device of flue gas of refuse burning wet process depickling, which is characterized in that including：
Wet process tower；
Alkalinity circulation (operating) water nozzle, is arranged in the inside of the wet process tower, for spraying alkaline recirculated water；
The bottom of the wet process tower is arranged in smoke inlet；
The top of the wet process tower is arranged in exhanst gas outlet；With
The outside of the wet process tower is arranged in frequency variable circulating pump, for the detected value according to the sour gas of the exhanst gas outlet,
By adjusting the frequency of the frequency variable circulating pump, to adjust the stream for the alkaline recirculated water that the alkalinity circulation (operating) water nozzle sprays
Amount.
2. the apparatus according to claim 1, which is characterized in that be greater than in the detected value of the sour gas of the exhanst gas outlet
When target value, the frequency of the frequency variable circulating pump increases, to increase the flow of the alkaline recirculated water.
3. the apparatus according to claim 1, which is characterized in that be less than in the detected value of the sour gas of the exhanst gas outlet
When target value, the frequency of the frequency variable circulating pump reduces, to reduce the flow of the alkaline recirculated water.
4. the apparatus according to claim 1, which is characterized in that the alkalinity circulation that the alkalinity circulation (operating) water nozzle sprays
The flow of water is controlled by cas PID control system.
5. device according to claim 4, which is characterized in that the cas PID control system include main control loop and
Sub-control circuit, the main control loop include the control loop of fume indication, and the sub-control circuit includes alkaline recirculated water
Control loop.
6. device according to claim 5, which is characterized in that the given value of the main control loop is the exhanst gas outlet
Sour gas target value, the value of feedback of the main control loop is the detected value of the sour gas of the exhanst gas outlet, institute
The output of main control loop is stated as the percentage of the range of buck flow.
7. device according to claim 6, which is characterized in that the given value in the sub-control circuit returns for the main control
The product of the range of the flow of the percentage of the output on road and the alkaline recirculated water in the sub-control circuit, the sub-control
The value of feedback in circuit is the instantaneous flow of the alkaline recirculated water, and the output in the sub-control circuit is the frequency variable circulating pump
Frequency given value.
8. the apparatus according to claim 1, which is characterized in that the sour gas of the exhanst gas outlet includes SO2。
9. the apparatus according to claim 1, which is characterized in that the alkalinity recirculated water includes NaOH recirculated water.
10. the apparatus according to claim 1, which is characterized in that the frequency variable circulating pump includes frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810626396.9A CN108905573A (en) | 2018-06-14 | 2018-06-14 | A kind of device of flue gas of refuse burning wet process depickling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810626396.9A CN108905573A (en) | 2018-06-14 | 2018-06-14 | A kind of device of flue gas of refuse burning wet process depickling |
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| Publication Number | Publication Date |
|---|---|
| CN108905573A true CN108905573A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810626396.9A Pending CN108905573A (en) | 2018-06-14 | 2018-06-14 | A kind of device of flue gas of refuse burning wet process depickling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521998A (en) * | 2021-07-05 | 2021-10-22 | 国能龙源环保有限公司 | Sensitive and economical wet flue gas SO of desulfurization outletxConcentration control method |
| CN113041808B (en) * | 2021-03-23 | 2022-08-02 | 光大环保技术装备（常州）有限公司 | Method and system for controlling adding amount of lime slurry and cooling water in deacidification tower |
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| JPH08257349A (en) * | 1995-03-28 | 1996-10-08 | Mitsubishi Heavy Ind Ltd | Predict control device and method for wet exhaust gas desulfurization plant |
| CN103321885A (en) * | 2013-06-21 | 2013-09-25 | 上海宝钢节能技术有限公司 | Energy-saving control system and energy-saving control method for slurry circulating pumps in wet desulfurization process |
| CN104678761A (en) * | 2015-02-11 | 2015-06-03 | 国家电网公司 | Total air volume advanced control-based denitration control method and system for thermal power unit |
| CN204746081U (en) * | 2015-06-05 | 2015-11-11 | 武汉龙净环保工程有限公司 | Can realize flue gas desulfurization automatic controls of ultra -clean emission |
| CN105561785A (en) * | 2015-12-16 | 2016-05-11 | 中国船舶重工集团公司第七一一研究所 | Urea solution jet control method of denitrification system based on dual MAPs |
| CN105797576A (en) * | 2016-04-15 | 2016-07-27 | 中国大唐集团科学技术研究院有限公司西北分公司 | Coal-fired unit denitration ammonia spraying control method |
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2018
- 2018-06-14 CN CN201810626396.9A patent/CN108905573A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08257349A (en) * | 1995-03-28 | 1996-10-08 | Mitsubishi Heavy Ind Ltd | Predict control device and method for wet exhaust gas desulfurization plant |
| CN103321885A (en) * | 2013-06-21 | 2013-09-25 | 上海宝钢节能技术有限公司 | Energy-saving control system and energy-saving control method for slurry circulating pumps in wet desulfurization process |
| CN104678761A (en) * | 2015-02-11 | 2015-06-03 | 国家电网公司 | Total air volume advanced control-based denitration control method and system for thermal power unit |
| CN204746081U (en) * | 2015-06-05 | 2015-11-11 | 武汉龙净环保工程有限公司 | Can realize flue gas desulfurization automatic controls of ultra -clean emission |
| CN105561785A (en) * | 2015-12-16 | 2016-05-11 | 中国船舶重工集团公司第七一一研究所 | Urea solution jet control method of denitrification system based on dual MAPs |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041808B (en) * | 2021-03-23 | 2022-08-02 | 光大环保技术装备（常州）有限公司 | Method and system for controlling adding amount of lime slurry and cooling water in deacidification tower |
| CN113521998A (en) * | 2021-07-05 | 2021-10-22 | 国能龙源环保有限公司 | Sensitive and economical wet flue gas SO of desulfurization outletxConcentration control method |
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Application publication date: 20181130 |