CN101943413B - Integral sludge incineration process control system - Google Patents
Integral sludge incineration process control system Download PDFInfo
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- CN101943413B CN101943413B CN200910069692.4A CN200910069692A CN101943413B CN 101943413 B CN101943413 B CN 101943413B CN 200910069692 A CN200910069692 A CN 200910069692A CN 101943413 B CN101943413 B CN 101943413B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention relates to a control system of an integral sludge incineration device. The system comprises a central control system, a sludge incinerator sub-control system, a pneumatic distributing valve sub-control system, a sludge supply sub-control system, a cooling water sub-control system and a dedusting sub-control system, wherein the central control system is connected with the other control systems through an industrial Ethernet. The system is characterized in that the system also comprises a compound dryer sub-control system which consists of a compound dryer temperature control system, a dry sludge sub-control system and a recirculated air sub-control system. The invention has the following advantages: 1) the operation of the sludge drying system can be accurately controlled; 2) the normal operation of the fine powder separator system can be controlled according to the change of the level of the fine powder separator; and 3) the requirements of environmental protection can be satisfied.
Description
Technical field:
The invention belongs to the control system that sludge of sewage treatment plant burns workshop section, a kind of control system that is particularly suitable for integrated sludge device.
Background technology:
In sewage treatment plant, sludge incineration workshop section is the important processing links of sewage treatment plant, also belongs at home at present the starting stage, and more advanced city starts, in sewage treatment plant, sludge incineration workshop section is set.Sludge treatment technique is mainly divided into sludge drying, outward transport burning process; Sludge drying, burning process; The integrated burning of mud (comprising mummification) technique.The integrated burning of mud belongs to a kind of sludge incineration mode that performance and price is higher.Sludge drying, outward transport burning process just carry out sludge drying, after mummification, transport outward, and deliver to other places and burn, and treatment process is imperfect, easily causes energy dissipation.Sludge drying, burning process are the sludge treatment techniques that sludge drying, burning sequentially complete, its shortcoming is sludge drying and burns the time-division and drive into capable, need to be to the cooling rear storage of dewatered sludge, waste energy, need to build storage feed bin for dewatered sludge simultaneously, increase investment, and have the danger of potential blast.The integrated burning process of mud is sludge drying, burns the sludge treatment technique completing continuously, and it has avoided above-mentioned technique shortcoming, has improved the ratio of performance to price of system.But its shortcoming is, also do not have automation perfect, that complete the integrated burning process of mud for in-line meter detection system and the control system of the integrated burning process of mud to control at present, realize Optimal Control.
Summary of the invention:
The object of the invention is to design a kind of Integral sludge incineration process control system, this system can control integrated sludge system continuous, complete sludge drying and burning automatically, and guarantee that the outlet flue gas of sludge incinerator reaches the technical indicator that national regulation requires.
Technical scheme of the present invention is: integrated sludge apparatus control system, comprises that central control system, sludge incinerator sub-control system, pneumatic distribution valve sub-control system, mud dosing sub-control system, cooling water sub-control system and dedusting sub-control system form; Central control system is connected by EPA with these control systems; It is characterized in that: also comprise compound drying device sub-control system, this system is comprised of compound mummification actuator temperature control system, dewatered sludge sub-control system and circulated air sub-control system; Circulated air sub-control system comprises by segmentation conveyer and the fine ash that forms of segmentation separation bin and forming from device sub-control system, the air-introduced machine sub-control system being comprised of air shut-off valve and air-introduced machine, the condenser sub-control system being comprised of condensed water water intaking valve, fluid level controller and outlet valve, the steam-water separator sub-control system that is comprised of steam-water separator water intaking valve, fluid level controller and outlet valve; Compound mummification actuator temperature control system by mud batcher and pneumatic distributor form, dewatered sludge sub-control system is comprised of dewatered sludge conveyer and pulverized-coal collector.
Above-mentioned compound mummification actuator temperature sub-control system is according to the temperature of compound drying device inside, controls the ash quantity fed of heat ash, and the temperature of compound drying device is controlled between 85～100 ℃.
The dewatered sludge sub-control system of above-mentioned compound drying device is controlled the pressure reduction of the bed of material of compound drying device inside, control the rotating speed of the conveyer of dewatered sludge, the rotating speed of conveyer is controlled between 25～50Hz of motor stator incoming frequency, and the pressure reduction of the compound drying device bed of material is controlled between 0 ~ 25kPa.
Above-mentioned air-introduced machine sub-control system is according to the pressure of compound drying device circulated air outlet, controls the rotating speed of air-introduced machine; Circulated air air-introduced machine rotating speed is controlled between 25～50Hz of motor stator incoming frequency, between the be controlled at ± 2000Pa of pressure of compound drying device circulated air outlet.
It is according to the material level of the difference in pulverized-coal collector separation bin that the output of above-mentioned pulverized-coal collector sub-control system is controlled, the rotating speed of grading control fine powder output conveyer; Control material level in pulverized-coal collector separation bin is: 100mm+20mm, 400mm ± 80mm, 700mm ± 80mm, 900mm ± 80mm.
Advantage of the present invention is: 1, according to the flow of the running temperature of compound drying device, pressure, circulated air, pressure, the mode that adopts complex loop to control is controlled the running of pneumatic distribution valve and compound drying device, can control accurately the operation of sludge drying system.2,, according to the variation of the thing position of pulverized-coal collector, adopt the mode of grading control, the normal operation of control system pulverized-coal collector system.3, according to the fire box temperature of sludge incinerator and pressure and other parameters, adopt the control mode of complex loop, control the operation of incinerator, guarantee that incinerator is in operation not produce dioxin, meet the requirement of environmental protection.4, according to the detected value of sulfur dioxide of the operation scale of incinerator and outlet flue gas, adopt the control mode of complex loop, control the operation with purifying column that adds of lime stone, make the outlet flue gas of incinerator system meet the requirement of environmental protection.5, a set of in-line meter detection system can be provided with, the service data of integrated sludge system and the operation of control sludge incinerating system can be detected in real time.
Accompanying drawing explanation:
Fig. 1 is control system structured flowchart of the present invention.
Fig. 2 is central control system structured flowchart.
Fig. 3 is sludge incineration sub-control system structured flowchart.
Fig. 4 is pneumatic distribution sub-control system structured flowchart.
Fig. 5 is mud dosing sub-control system structured flowchart.
Fig. 6 is cooling water sub-control system structured flowchart.
Fig. 7 is dedusting sub-control system structured flowchart.
Fig. 8 is compound drying device dewatered sludge sub-control system structured flowchart.
Fig. 9 is compound mummification actuator temperature control system structured flowchart.
Figure 10 is air-introduced machine sub-control system structured flowchart.
Figure 11 is pulverized-coal collector sub-control system structured flowchart.
Figure 12 is steam-water separator sub-control system structured flowchart.
Figure 13 is condenser sub-control system structured flowchart.
The specific embodiment:
As shown in Figure 1: integrated sludge apparatus control system, comprises that central control system, sludge incinerator sub-control system, pneumatic distribution valve sub-control system, mud dosing sub-control system, cooling water sub-control system and dedusting sub-control system form; Central control system is connected by EPA with these control systems; It is characterized in that: also comprise compound drying device sub-control system, this system is comprised of compound mummification actuator temperature control system, dewatered sludge sub-control system and circulated air sub-control system.As shown in Fig. 3,4,5,6,7: sludge incinerator sub-control system is comprised of with air blast with air-introduced machine and incinerator recirculating fluidized bed, incinerator.Pneumatic distribution valve sub-control system is comprised of pneumatic distribution valve, mass flowmenter and air blast; Mud dosing sub-control system is comprised of sludge delivery pump, intermediate storage tank and disintegrating machine; Cooling water sub-control system is comprised of water making device, water tank and force (forcing) pump; Dedusting sub-control system is comprised of deduster, compressed air system and ash silo.
As shown in Fig. 8-13: compound drying device sub-control system, this system is comprised of compound mummification actuator temperature control system, dewatered sludge sub-control system and circulated air sub-control system.Circulated air sub-control system comprises by segmentation conveyer and the fine ash that forms of segmentation separation bin and forming from device sub-control system, the air-introduced machine sub-control system being comprised of air shut-off valve and air-introduced machine, the condenser sub-control system being comprised of condensed water water intaking valve, fluid level controller and outlet valve, the steam-water separator sub-control system that is comprised of steam-water separator water intaking valve, fluid level controller and outlet valve; Compound mummification actuator temperature control system by mud batcher and pneumatic distributor form, dewatered sludge sub-control system is comprised of dewatered sludge conveyer and pulverized-coal collector.Above-mentioned compound mummification actuator temperature sub-control system is according to the temperature of compound drying device inside, controls the ash quantity fed of heat ash, and the temperature of compound drying device is controlled between 85～100 ℃.The dewatered sludge sub-control system of above-mentioned compound drying device is controlled the pressure reduction of the bed of material of compound drying device inside, control the rotating speed of the conveyer of dewatered sludge, the rotating speed of conveyer is controlled between 25～50Hz of motor stator incoming frequency, and the pressure reduction of the compound drying device bed of material is controlled between 0 ~ 25kPa.Above-mentioned air-introduced machine sub-control system is according to the pressure of compound drying device circulated air outlet, controls the rotating speed of air-introduced machine; Circulated air air-introduced machine rotating speed is controlled between 25～50Hz of motor stator incoming frequency, between the be controlled at ± 2000Pa of pressure of compound drying device circulated air outlet.It is according to the material level of the difference in pulverized-coal collector separation bin that the output of above-mentioned pulverized-coal collector sub-control system is controlled, the rotating speed of grading control fine powder output conveyer; Control material level in pulverized-coal collector separation bin is: 100mm ± 20mm, 400mm ± 80mm, 700mm ± 80mm, 900mm ± 80mm.
Claims (1)
1. integrated sludge apparatus control system, comprises that central control system, sludge incinerator sub-control system, pneumatic distribution valve sub-control system, mud dosing sub-control system, cooling water sub-control system and dedusting sub-control system form; Central control system is connected by EPA with these sub-control systems; It is characterized in that: also comprise compound drying device sub-control system, described compound drying device sub-control system is comprised of compound mummification actuator temperature sub-control system, dewatered sludge sub-control system and circulated air sub-control system; Circulated air sub-control system comprises the pulverized-coal collector sub-control system being comprised of fine powder conveyer and fine powder separation bin, the air-introduced machine sub-control system being comprised of air shut-off valve and air-introduced machine, the condenser sub-control system being comprised of condensed water water intaking valve, the first fluid level controller and the first outlet valve, the steam-water separator sub-control system being comprised of steam-water separator water intaking valve, the second fluid level controller and the second outlet valve; Compound mummification actuator temperature sub-control system by mud batcher and pneumatic distributor form, dewatered sludge sub-control system is comprised of dewatered sludge conveyer and pulverized-coal collector;
Above-mentioned compound mummification actuator temperature sub-control system is according to the temperature of compound drying device inside, controls the ash quantity fed of heat ash, and the temperature of compound drying device is controlled between 85～100 ℃;
The dewatered sludge sub-control system of above-mentioned compound drying device is controlled the pressure reduction of the bed of material of compound drying device inside, control the rotating speed of dewatered sludge conveyer, the rotating speed of conveyer is controlled between 25～50Hz of motor stator incoming frequency, and the pressure reduction of the compound drying device bed of material is controlled between 0～25kPa;
Above-mentioned air-introduced machine sub-control system is according to the pressure of compound drying device circulated air outlet, controls the rotating speed of air-introduced machine; Circulated air air-introduced machine rotating speed is controlled between 25～50Hz of motor stator incoming frequency, between the be controlled at ± 2000Pa of pressure of compound drying device circulated air outlet;
It is according to the material level of the difference in pulverized-coal collector separation bin that the output of above-mentioned pulverized-coal collector sub-control system is controlled, the rotating speed of grading control fine powder conveyer; Control material level in fine powder separation bin is: 100mm ± 20mm, 400mm ± 80mm, 700mm ± 80mm, 900mm ± 80mm.
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| CN200910069692.4A CN101943413B (en) | 2009-07-10 | 2009-07-10 | Integral sludge incineration process control system |
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| CN200910069692.4A CN101943413B (en) | 2009-07-10 | 2009-07-10 | Integral sludge incineration process control system |
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| CN101943413B true CN101943413B (en) | 2014-11-05 |
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| CN1884913A (en) * | 2005-06-21 | 2006-12-27 | 中国科学院工程热物理研究所 | Wet sludge drying and incinerating treatment method employing circulating fluidized bed with combined dryer |
| CN101468868A (en) * | 2007-12-26 | 2009-07-01 | 中国市政工程华北设计研究院 | Innocent incineration integrated processing technique for wet sludge circulating fluid bed |
| CN201606883U (en) * | 2009-07-10 | 2010-10-13 | 中国科学院工程热物理研究所 | Integrated sludge incinerating process control device |
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- 2009-07-10 CN CN200910069692.4A patent/CN101943413B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884913A (en) * | 2005-06-21 | 2006-12-27 | 中国科学院工程热物理研究所 | Wet sludge drying and incinerating treatment method employing circulating fluidized bed with combined dryer |
| CN101468868A (en) * | 2007-12-26 | 2009-07-01 | 中国市政工程华北设计研究院 | Innocent incineration integrated processing technique for wet sludge circulating fluid bed |
| CN201606883U (en) * | 2009-07-10 | 2010-10-13 | 中国科学院工程热物理研究所 | Integrated sludge incinerating process control device |
Non-Patent Citations (5)
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| JP特开平6-129626A 1994.05.13 * |
| 国内外污泥热干燥工艺的应用进展及技术要点;王兴润等;《中国给水排水》;20070430;第23卷(第8期);第5-8页 * |
| 张月辉.污泥干化焚烧工艺***分析.《能源与环境》.2009,(第4期),第76-77,79页. * |
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Address after: 100190 No. 11 West Fourth Ring Road, Beijing Co-patentee after: China public works North China design studies Zong Yuan company limited Patentee after: Institute of Engineering Thermophysics, Chinese Academy of Sciences Address before: 100190 No. 11 West Fourth Ring Road, Beijing Co-patentee before: North China Municipal Engineering Design & Research Institute Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |
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