CN101354138A - Method and device for controlling desulfuration in furnace utilizing automatic control system - Google Patents
Method and device for controlling desulfuration in furnace utilizing automatic control system Download PDFInfo
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- CN101354138A CN101354138A CNA2007101129537A CN200710112953A CN101354138A CN 101354138 A CN101354138 A CN 101354138A CN A2007101129537 A CNA2007101129537 A CN A2007101129537A CN 200710112953 A CN200710112953 A CN 200710112953A CN 101354138 A CN101354138 A CN 101354138A
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- desulfurizing agent
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Abstract
The invention relates to a method and equipment for controlling desulfurization in a boiler by utilizing an automatic control system, in particular to a method of desulfurization in a fluidized bed boiler and equipment for realizing the method. Particularly, the proportion of a desulfurizing agent to be added is set according to sulfur content in substances to be treated and the standard input speed of the desulfurizing agent is determined according to the conveying speed of the substances to be treated; a storage-bunker weight data acquisition mechanism is arranged below a powder storage bin; the adding speed of the desulfurizing agent is traced through the change of the weight of the powder storage bin; data of the weight change of the powder storage bin is sent to a calculation and control mechanism and compared with the set standard input speed of the desulfurizing agent, then a command is output according to the comparison result to control the running speed of a feeding converter motor so as to realize the automatic control of feeding the desulfurizing agent. The desulfurization method and equipment are comparatively easy to control, good in desulfurization effect and high in use ratio of the desulfurizing agent and can be used together with powder manufacturing equipment.
Description
Technical field
The equipment that the present invention relates to a kind of method of fluidized-bed combustion boiler desulfuration in furnace and realize this method.
Background technology
Current, the boiler energy of China is based on fire coal, because coal fire discharged content of sulfur dioxide is higher, environmental pollution is more serious, causes phenomenons such as acid rain especially easily.Therefore, the protection environment reduces the discharging of sulphur, remains the emphasis that research is from now on administered.
The method of desulfuration in furnace is a lot of at present, and still concluding gets up all is the gross weight that basis is sent into the coal in the boiler, and according to a certain percentage, a large amount of desulfurizing agent of unified adding carries out desulfurization in stove.Do like this because the amount of coal and desulfurizing agent is all bigger, be easy to cause and mix inhomogeneous, ratio and do not meet problems such as desulfurization requirement, cause wherein part possibility desulfurization more thorough, reached desirable desulfurized effect, but, have greatly because can not fully carry out chemical reaction, so that desulfurization is not thorough, does not reach national requirements with desulfurizing agent.Like this, both wasted the purpose that a large amount of desulfurizing agents can't be realized desulfurization, very easily contaminated environment.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of than be easier to control, desulfurized effect is good, sorbent utilization is high and the sulfur method and the equipment that can be used with powder manufacturing apparatus.
The present invention realizes in the following way:
Set the ratio that should add desulfurizing agent according to handled thing sulfur-bearing situation, and determine desulfurizing agent standard input speed according to the handled thing transporting velocity; Filler bin weight data collecting mechanism is set below filler bin, follows the tracks of desulfurizing agent dosage speed by the variation of filler bin weight; Filler bin weight change data are sent to calculating, controlling organization, and after comparing with setting desulfurizing agent standard input speed, according to the comparable situation output order, control feeding variable-frequency motor operating rate realizes the desulfurizing agent automatic feeding control.
This equipment comprises filler bin, feed pipe, calculate and control system, frequency converter and feeding motor, be provided with at least three legs in the bottom of filler bin, the below of each leg all is provided with a weight sensor, and each weight sensor is connected with calculating and control circuit, the output of calculating and control circuit connects frequency converter, and frequency converter is connected with the feeding motor.In feed pipe, be provided with the strand cage, carry desulfurizing agent with feeding motor-driven strand cage.If detect the output quantity of desulfurizing agent more accurately, meet desulfurizing agent and coal-fired proportionate relationship, can in the strand cage, flow sensor be set, online dynamic acquisition desulfurizing agent is by the output quantity of strand cage.
Described filler bin is an anti-compaction formula feed bin, and the feed bin lower body part is taper, and its awl end is provided with material outlet, and the angle of tapering inwall and feed bin main body vertical direction is set to 45-70 °; Feed bin main body top is provided with oscillator.
When work, show coal speed and sulfur-bearing rate in the microcomputer, calculate calcium sulfur ratio automatically, determine to add the input speed of desulfurizing agent.The consumption of the online dynamic acquisition desulfurizing agent of sensor of filler bin below, and feed back to calculating and control system, determine the calcium sulfur ratio under the user mode, and compare with standard; Pass through the microcomputer output order then, by the operating frequency of Frequency Converter Control feeding motor, thus the output quantity of control desulfurizing agent.
Described leg is at least three, and is provided with weight sensor below leg, can change the number of leg and weight sensor according to requirements such as precision.
Described calculating and control system can write down the operation information of equipment, store and export, so that have access to the job information of each period at any time.
Method of the present invention can online dynamic acquisition desulfurizing agent consumption, calculate calcium sulfur ratio voluntarily, control the output quantity of desulfurizing agent automatically, and online being presented on the microcomputer monitor, realized Automatic Control, easy to use; Owing to can onlinely detect, control the output quantity of calcium sulfur ratio and desulfurizing agent, can accurately control the output quantity of desulfurizing agent, join uniformly in the fire coal, guarantee that desulfuration in furnace is reliable for effect, stable, efficient, thorough; Can write down, store job information, make the user must realize desulfurization as requested, make desulfurized effect relatively good, protect environment.
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention;
Fig. 2 is a structural representation of the present invention;
Wherein, the 1st, microcomputer, the 2nd, connecting line, the 3rd, controller, the 4th, filler bin, the 5th, assistance to improve schooling in backward areas, the 6th, weight sensor, the 7th, feeding motor, the 8th, strand cage.
Preferred forms
Further explain the present invention program with non-limiting embodiment below:
Present embodiment is provided with four legs in the filler bin bottom, respectively be provided with a weight sensor below each leg, each weight sensor all is connected with calculating and control system, the output of calculating and control system connects frequency converter, frequency converter connects the feeding motor, be provided with the strand cage in the feed pipe, the motion of feeding motor-driven strand cage.
Calculating and control system are arranged in the main control room, comprise microcomputer and controller, microcomputer can dynamically show the various data of this control system, comprises that coal-fired depletion rate, sorbent consumption speed, calcium sulfur ratio, frequency converter frequency, filler bin weight, desulfurizing agent use total accumulation etc.
Described filler bin is an anti-compaction formula feed bin, and the feed bin lower body part is taper, and its awl end is provided with material outlet, and the angle of tapering inwall and feed bin main body vertical direction is set to 45-70 °; Feed bin main body top is provided with oscillator.
During work, show coal-fired depletion rate and sulfur-bearing rate in the microcomputer, and determine the standard input speed of desulfurizing agent according to the standard calcium sulfur ratio; The output data of the online dynamic acquisition desulfurizing agent of the weight sensor below the filler bin, and feed back in the microcomputer, compare with standard then; After the contrast, according to the comparable situation output order, the frequency by frequency converter is regulated the feeding motor realizes the change of desulfurizing agent transporting velocity; The strand cage is exported desulfurizing agent by the driving of feeding motor.And cooperate anti-compaction formula feed bin, effectively overcome hardening of powder.
In order to gather the output quantity of desulfurizing agent more accurately, can also in the strand cage, flow sensor be set, compare with weight sensor.
Claims (7)
1. a method of utilizing the automatic controlling system desulfuration in furnace is characterized in that: set the ratio that should add desulfurizing agent according to handled thing sulfur-bearing situation, and determine desulfurizing agent standard input speed according to the handled thing transporting velocity; Storing storehouse weight data collecting mechanism is set below filler bin, follows the tracks of desulfurizing agent dosage speed by the variation of filler bin weight; Filler bin weight change data are sent to calculating, controlling organization, and after comparing with setting desulfurizing agent standard input speed, according to the comparable situation output order, control feeding variable-frequency motor operating rate realizes the desulfurizing agent automatic feeding control.
2. the method for utilizing the automatic controlling system desulfuration in furnace according to claim 1 is characterized in that: described filler bin weight data collecting mechanism is a weight sensor, is arranged on the feet of filler bin, is at least three.
3. the method for utilizing the automatic controlling system desulfuration in furnace according to claim 2 is characterized in that: described weight sensor is set to four.
4. realize the equipment of the described method of claim 1, comprise filler bin, feed pipe, calculate and control system, frequency converter and feeding motor is characterized in that: the filler bin bottom is provided with at least three legs, each leg below is provided with a weight sensor, each weight sensor is connected with calculating and control system, and the output of calculating and control system connects frequency converter, and frequency converter is connected with the feeding motor.
5. equipment according to claim 4 is characterized in that: described leg is set to four, and described weight sensor is set to four.
6. equipment according to claim 4 is characterized in that: be provided with the strand cage in the described feed pipe.
7. equipment according to claim 4 is characterized in that: described filler bin lower body part is taper, and the angle of tapering inwall and feed bin main body vertical direction is 45-70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101129537A CN101354138A (en) | 2007-09-19 | 2007-09-19 | Method and device for controlling desulfuration in furnace utilizing automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101129537A CN101354138A (en) | 2007-09-19 | 2007-09-19 | Method and device for controlling desulfuration in furnace utilizing automatic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101354138A true CN101354138A (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101129537A Pending CN101354138A (en) | 2007-09-19 | 2007-09-19 | Method and device for controlling desulfuration in furnace utilizing automatic control system |
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| CN (1) | CN101354138A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219121A (en) * | 2010-04-16 | 2011-10-19 | 和原生态控股股份有限公司 | Fertilizer pour-out weight controller |
| CN104536410A (en) * | 2014-12-22 | 2015-04-22 | 山东应天节能环保科技有限公司 | Intelligent detecting device for desulfurization and denitrification additives |
| CN104841271A (en) * | 2015-05-27 | 2015-08-19 | 山东应天节能环保科技有限公司 | Desulfurization and denitrification automatic control system |
| CN104857853A (en) * | 2015-05-27 | 2015-08-26 | 山东应天节能环保科技有限公司 | Conveying device for conveying powdery catalyst according to sulfur and nitrate content in flue gas |
| CN115155362A (en) * | 2022-07-29 | 2022-10-11 | 西安热工研究院有限公司 | Dynamic large-range mixing system suitable for rectangular section channel |
-
2007
- 2007-09-19 CN CNA2007101129537A patent/CN101354138A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219121A (en) * | 2010-04-16 | 2011-10-19 | 和原生态控股股份有限公司 | Fertilizer pour-out weight controller |
| CN104536410A (en) * | 2014-12-22 | 2015-04-22 | 山东应天节能环保科技有限公司 | Intelligent detecting device for desulfurization and denitrification additives |
| CN104536410B (en) * | 2014-12-22 | 2018-05-15 | 山东应天节能环保科技有限公司 | A kind of desulphurization denitration additive intelligent detection device |
| CN104841271A (en) * | 2015-05-27 | 2015-08-19 | 山东应天节能环保科技有限公司 | Desulfurization and denitrification automatic control system |
| CN104857853A (en) * | 2015-05-27 | 2015-08-26 | 山东应天节能环保科技有限公司 | Conveying device for conveying powdery catalyst according to sulfur and nitrate content in flue gas |
| CN115155362A (en) * | 2022-07-29 | 2022-10-11 | 西安热工研究院有限公司 | Dynamic large-range mixing system suitable for rectangular section channel |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090128 |