CN112194340A - Sludge drying feeding control system - Google Patents
Sludge drying feeding control system Download PDFInfo
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- CN112194340A CN112194340A CN202011112742.5A CN202011112742A CN112194340A CN 112194340 A CN112194340 A CN 112194340A CN 202011112742 A CN202011112742 A CN 202011112742A CN 112194340 A CN112194340 A CN 112194340A
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- 239000010802 sludge Substances 0.000 title claims abstract description 224
- 238000001035 drying Methods 0.000 title claims abstract description 175
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000003546 flue gas Substances 0.000 claims abstract description 61
- 238000012806 monitoring device Methods 0.000 claims abstract description 26
- 238000005303 weighing Methods 0.000 claims abstract description 19
- 239000002918 waste heat Substances 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 7
- 238000000197 pyrolysis Methods 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 29
- 238000000746 purification Methods 0.000 claims description 24
- 239000002912 waste gas Substances 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000018044 dehydration Effects 0.000 claims description 13
- 238000006297 dehydration reaction Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000010985 leather Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000006303 photolysis reaction Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 3
- 238000005201 scrubbing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 239000002910 solid waste Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000010920 waste tyre Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004227 thermal cracking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000015843 photosynthesis, light reaction Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of sludge drying treatment, and particularly relates to a sludge drying feeding control system which comprises a control core, a feedback module, a sludge treatment module, a post-treatment module and a waste heat module, wherein the feedback module comprises a sludge weighing device, a flue gas temperature monitoring device and a humidity tester, the sludge treatment module comprises a spiral conveyor control box, a variable speed spiral conveyor, a sludge drying device and a dry slag bin, the control core is electrically connected with the sludge weighing device, the flue gas temperature monitoring device, the humidity tester and the spiral conveyor control box, the sludge treatment module can fully utilize the energy of the waste heat module to realize environment-friendly co-production process construction, the control core can control the feeding speed of the variable speed spiral conveyor by adopting a fuzzy mathematic control principle under the real-time feedback of the feedback module, further changing the operation temperature of the sludge drying equipment and realizing the optimal feeding speed and the optimal operation temperature of the sludge drying.
Description
Technical Field
The invention belongs to the technical field of sludge drying treatment, and particularly relates to a sludge drying feeding control system.
Background
The low-temperature depolymerization thermal cracking treatment technology for the solid waste of the organic high molecular polymer is a process for cracking the solid waste of the organic high molecular polymer into a pyrolysis product mainly comprising pyrolysis gas, pyrolysis oil and pyrolysis carbon under the anoxic or inert environment, the thermal cracking technology can realize the full recovery of resources in the solid waste of the organic high molecular polymer without polluting the environment, the sludge drying process needs external energy, generally adopts diesel oil or natural gas, the pyrolysis oil which is a product of the pyrolysis process of the solid waste of the organic high molecular polymer is very suitable fuel oil and can be used as a raw material source of the sludge drying process, the low-temperature depolymerization thermal cracking system of the solid waste and the sludge heat drying system of a sewage plant are combined and built, the resource of sludge pyrolysis carbonization fuel can be effectively solved, in addition, the high-temperature waste gas of the pyrolysis process can be used for utilizing the waste heat, and the combined production process construction meets the requirement of' drying circular, on one hand, the resource recovery and reutilization of the organic high molecular polymer solid waste are realized through pyrolysis, and on the other hand, the pyrolysis oil which is the product of the pyrolysis process is directly used as the sludge drying process fuel of the sewage plant, so that the storage, transportation and refining links are reduced, and the concept of recycling economy is met.
The existing sludge drying feeding control system cannot accurately monitor and automatically control the sludge drying equipment in real time, so that the feeding speed and the operating temperature of sludge drying cannot be effectively controlled, the optimal operating speed of the sludge drying operating process is realized, and the situations of excessive energy consumption or incomplete sludge drying are caused.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a sludge drying feeding control system, a sludge treatment module can fully utilize the energy of a waste heat module to realize environment-friendly co-production process construction, and a control core can control the feeding speed of a variable speed screw conveyor by adopting a fuzzy mathematical control principle under the real-time feedback of a feedback module so as to change the operation temperature of sludge drying equipment and realize the optimal feeding speed and the optimal operation temperature of sludge drying.
In order to achieve the purpose, the invention provides the following technical scheme: the sludge drying feeding control system comprises a control core, a feedback module, a sludge treatment module, a post-treatment module and a waste heat module, the feedback module comprises a sludge weighing device, a flue gas temperature monitoring device and a humidity measuring instrument, the sludge treatment module comprises a screw conveyor control box, a variable speed screw conveyor, a sludge drying device and a dry slag bin, the control core is electrically connected with the sludge weighing device, the flue gas temperature monitoring device, the humidity tester and the spiral conveyer control box, the spiral conveyor control box is electrically connected with the variable speed spiral conveyor, the sludge weighing device is positioned below the discharge port of the sludge bin, the feed end of variable speed screw conveyer is located the bottom side of sludge weighing equipment, variable speed screw conveyer's discharge end is located the feed inlet top of sludge drying equipment, the dry residue feed bin is located the below of sludge drying equipment discharge end.
Preferably, the waste heat module comprises a tire leather pyrolysis system and a combustion boiler, pyrolysis oil and high-temperature flue gas are generated in the operation of the tire leather pyrolysis system, the pyrolysis oil can be converted into the high-temperature flue gas through the combustion boiler, and the high-temperature flue gas is introduced into the sludge drying equipment through a high-temperature pipeline; the tire leather pyrolysis system and the sludge drying equipment form a co-production process, the pyrolysis product-pyrolysis oil of the waste tire is used as fuel, and the combustion waste gas directly dries the activated sludge with the water content of 80%, so that the energy cost of sludge drying is greatly reduced, and the purpose of treating waste with waste is achieved.
Preferably, the post-treatment module comprises odor purification equipment and flue gas purification equipment, the air outlet end of the sludge drying equipment discharges dry waste gas into the flue gas purification equipment through an exhaust pipeline, the air outlets of the dry slag bin and the sludge bin are communicated with the air inlet end of the odor purification equipment through an exhaust pipeline, and the odor purification equipment and the flue gas purification equipment are one or more of a washing tower, a carbon filter and a low-temperature plasma UV photolysis all-in-one machine; the odor purification equipment and the flue gas purification equipment can effectively treat the waste gas containing oil fume and peculiar smell generated in the sludge drying process, so that the sludge drying process meets the environmental protection requirement.
Preferably, the number of the humidity measuring instruments is two, one humidity measuring instrument is fixedly arranged at the middle section of the sludge drying equipment, and the other humidity measuring instrument is fixedly arranged in the discharge hole direction of the sludge drying equipment; the moisture meter arranged in the middle section and the discharge hole of the sludge drying equipment can measure the sludge treated in the sludge drying equipment in a sectional mode, on one hand, the accuracy of a measuring result can be improved, on the other hand, when the moisture meter detects that the moisture content of the sludge in the middle section of the sludge drying equipment is higher than or lower than a set value of the control core, the control core can adjust the feeding speed of the variable-speed screw conveyor in time, and therefore the optimal feeding speed and the optimal operation temperature for sludge drying are guaranteed.
Preferably, the pre-input values of the control core comprise a discharged water content, a gas outlet temperature, sludge and a fed water content, and the flue gas temperature monitoring device is fixedly installed at a gas outlet end of the sludge drying device; the staff can be in advance to the internal input of control core and set for four fixed values of ejection of compact moisture content, the temperature of giving vent to anger, argillaceous, feeding moisture content, and the real-time parameter of cooperation mud weighing equipment, flue gas temperature monitoring facilities, moisture meter feedback makes the control core adopt fuzzy mathematics's control principle to calculate, through the feed rate of screw conveyer control box control variable speed screw conveyer, and then changes the operating temperature of sludge drying equipment, guarantees to realize sludge drying's best feed rate and best operating temperature.
Preferably, the control core is controlled to operate according to the following flow:
step S1, monitoring the temperature of the dry waste gas by a flue gas temperature monitoring device arranged at the air outlet end of the sludge drying device, sending an electric signal to the control core to compare with the water content of the discharged material, and adjusting the initial feeding speed of the variable speed screw conveyor, wherein the preset value of the air outlet temperature is 170 ℃, when the detection result of the flue gas temperature monitoring device is less than 170 ℃, the control core enters step S2, when the detection result of the flue gas temperature monitoring device is =170 ℃, the control core enters step S3, and when the detection result of the flue gas temperature monitoring device is more than 170 ℃, the control core enters step S4;
step S2, the control core increases the feeding speed of the variable speed screw conveyor through the control box of the screw conveyor, the operation temperature of the sludge drying equipment measured by the flue gas temperature monitoring equipment is reduced, the sludge drying equipment continuously operates to a humidity measuring instrument at the middle section of the sludge drying equipment to detect the moisture content of the sludge subjected to the first section of drying treatment, and the control core enters step S5;
s3, the control core controls the feeding speed of the variable-speed screw conveyor to keep unchanged through the screw conveyor control box, the operating temperature of the sludge drying equipment measured by the flue gas temperature monitoring equipment is unchanged, the sludge drying equipment continues to operate until the moisture content of the sludge subjected to the first drying treatment is detected by the moisture meter at the middle section of the sludge drying equipment, and the control core goes to S5;
s4, the control core reduces the feeding speed of the variable-speed screw conveyor through the control box of the screw conveyor, the operation temperature of the sludge drying equipment is increased by the flue gas temperature monitoring equipment, the sludge drying equipment continuously operates to a humidity tester at the middle section of the sludge drying equipment to detect the moisture content of the sludge subjected to the first section of drying treatment, and the control core enters S5;
step S5, detecting the moisture content of the sludge subjected to first-stage drying treatment by a humidity measuring instrument arranged at the middle section of the sludge drying equipment, sending an electric signal to the control core to compare the moisture content with the discharged water content, wherein the preset value of the discharged water content is 40%, when the detection result of the moisture content of the first section is less than 40%, the control core enters step S6, when the detection result of the moisture content of the first section is = 40%, the control core enters step S7, and when the detection result of the moisture content of the first section is greater than 40%, the control core enters step S8;
step S6, the control core increases the feeding speed of the variable speed screw conveyor through the screw conveyor control box, the dehydration rate of the sludge drying equipment is reduced, the sludge drying equipment continues to operate, and the control core enters step S9;
s7, the control core controls the feeding speed of the variable-speed screw conveyor to keep unchanged through the screw conveyor control box, the dehydration rate of the sludge drying equipment is unchanged, the sludge drying equipment continues to operate, and the control core enters S9;
s8, the control core reduces the feeding speed of the variable-speed screw conveyor through the screw conveyor control box, the dehydration rate of the sludge drying equipment is improved, the sludge drying equipment continues to operate, and the control core enters S9;
and S9, detecting the moisture content of the sludge subjected to second-stage drying treatment by a humidity tester arranged in the direction of the discharge port of the sludge drying equipment, sending an electric signal to the control core to compare the moisture content with the discharged water content, wherein the preset value of the discharged water content is 30%, when the detection result of the second-stage moisture content is less than 30%, the control core enters S6, when the detection result of the second-stage moisture content is = 30%, the control core enters S7, and when the detection result of the second-stage moisture content is greater than 30%, the control core enters S8.
Compared with the prior art, the invention has the beneficial effects that: the tire leather pyrolysis system and the sludge drying equipment can form a co-production process, waste tire pyrolysis products-pyrolysis oil are used as fuel, and combustion waste gas directly dries activated sludge with the water content of 80%, so that the energy cost of sludge drying is greatly reduced, and the purpose of treating waste with waste is achieved; the odor purification equipment and the flue gas purification equipment can effectively treat the waste gas containing oil fume and peculiar smell generated in the sludge drying process, so that the sludge drying process meets the environmental protection requirement; the humidity measuring instruments arranged in the middle section and the discharge port of the sludge drying equipment can measure the sludge processed in the sludge drying equipment in a sectional mode, on one hand, the accuracy of a measuring result can be improved, and on the other hand, when the humidity measuring instruments detect that the water content of the sludge in the middle section of the sludge drying equipment is higher than or lower than a set value of the control core, the control core can adjust the feeding speed of the variable speed screw conveyor in time so as to ensure the optimal feeding speed and the optimal operation temperature for realizing sludge drying; the staff can be in advance to the internal input of control core and set for four fixed values of ejection of compact moisture content, the temperature of giving vent to anger, argillaceous, feeding moisture content, and the real-time parameter of cooperation mud weighing equipment, flue gas temperature monitoring facilities, moisture meter feedback makes the control core adopt fuzzy mathematics's control principle to calculate, through the feed rate of screw conveyer control box control variable speed screw conveyer, and then changes the operating temperature of sludge drying equipment, guarantees to realize sludge drying's best feed rate and best operating temperature.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a block diagram of a feedback module according to the present invention;
FIG. 3 is a block diagram of a sludge treatment module according to the present invention;
FIG. 4 is a block diagram of a post-processing module according to the present invention;
FIG. 5 is a block diagram of a waste heat module according to the present invention;
FIG. 6 is a block diagram of the working principle of the present invention;
FIG. 7 is a flowchart of the operation of the control core of the present invention;
in the figure: 1. a control core; 2. a feedback module; 3. a sludge treatment module; 4. a post-processing module; 5. a waste heat module; 101. discharging water content; 102. the temperature of the gas outlet; 103. argillaceous substances; 104. water content of the feed material; 201. a sludge weighing device; 202. flue gas temperature monitoring equipment; 203. a moisture meter; 301. a screw conveyor control box; 302. a variable speed screw conveyor; 303. a sludge drying apparatus; 304. a dry slag bin; 305. a sludge bin; 306. drying the exhaust gas; 401. odor purification equipment; 402. a flue gas purification device; 501. a tire leather pyrolysis system; 502. a combustion boiler; 503. a pyrolysis oil; 504. high temperature flue gas.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-7, the present invention provides the following technical solutions: sludge drying feed control system, including control core 1, feedback module 2, sludge treatment module 3, aftertreatment module 4, waste heat module 5, feedback module 2 includes mud weighing device 201, flue gas temperature monitoring equipment 202, moisture meter 203, sludge treatment module 3 includes screw conveyer control box 301, variable speed screw conveyer 302, sludge drying device 303, dry residue feed bin 304, control core 1 electric connection mud weighing device 201, flue gas temperature monitoring equipment 202, moisture meter 203 and screw conveyer control box 301, screw conveyer control box 301 electric connection variable speed screw conveyer 302, mud weighing device 201 is located the below of mud feed bin 305 discharge gate, the feed end of variable speed screw conveyer 302 is located the bottom side of mud weighing device 201, the discharge end of variable speed screw conveyer 302 is located the feed inlet top of mummification mud device 303, the dry slag bin 304 is positioned below the discharge end of the sludge drying device 303.
Specifically, the waste heat module 5 comprises a tire leather pyrolysis system 501 and a combustion boiler 502, pyrolysis oil 503 and high-temperature flue gas 504 are generated in the operation of the tire leather pyrolysis system 501, the pyrolysis oil 503 can be converted into the high-temperature flue gas 504 through the combustion boiler 502, and the high-temperature flue gas 504 is introduced into the sludge drying device 303 through a high-temperature pipeline; the tire leather pyrolysis system 501 and the sludge drying device 303 can form a co-production process, waste tire pyrolysis products, namely pyrolysis oil, are used as fuel, and combustion waste gas of the waste tire pyrolysis products, namely pyrolysis oil, is used for directly drying activated sludge with the water content of 80%, so that the energy cost of sludge drying is greatly reduced, and the purpose of treating waste with waste is achieved.
Specifically, the post-treatment module 4 comprises an odor purification device 401 and a flue gas purification device 402, the air outlet end of the sludge drying device 303 discharges dry waste gas 306 into the flue gas purification device 402 through an exhaust pipeline, the air outlets of the dry slag bin 304 and the sludge bin 305 are communicated with the air inlet end of the odor purification device 401 through an exhaust pipeline, and the odor purification device 401 and the flue gas purification device 402 are one or more of a washing tower, a carbon filter and a low-temperature plasma UV photolysis all-in-one machine; the odor purification device 401 and the flue gas purification device 402 can effectively treat the waste gas containing oil smoke and peculiar smell generated in the sludge drying process, so that the sludge drying process meets the environmental protection requirement.
Specifically, the number of the humidity measuring instruments 203 is two, one humidity measuring instrument 203 is fixedly installed at the middle section of the sludge drying equipment 303, and the other humidity measuring instrument 203 is fixedly installed in the discharge port direction of the sludge drying equipment 303; the moisture meter 203 arranged in the middle section and the discharge port of the sludge drying device 303 can measure the sludge processed in the sludge drying device 303 in a sectional manner, on one hand, the accuracy of the measurement result can be improved, on the other hand, when the moisture meter 203 detects that the moisture content of the sludge in the middle section of the sludge drying device 303 is higher than or lower than the set value of the control core 1, the control core 1 can adjust the feeding speed of the variable speed screw conveyor 302 in time, so as to ensure the optimal feeding speed and the optimal operation temperature for realizing sludge drying.
Specifically, the pre-input values of the control core 1 comprise a discharged material water content 101, an outlet gas temperature 102, a sludge 103 and a fed material water content 104, and the flue gas temperature monitoring device 202 is fixedly installed at an outlet end of the sludge drying device 303; the staff can input four fixed values of set discharge water content 101, gas outlet temperature 102, muddy matter 103 and feed water content 104 into the control core 1 in advance, the real-time parameters fed back by matching with the sludge weighing device 201, the flue gas temperature monitoring device 202 and the humidity determinator 203 enable the control core 1 to adopt the fuzzy mathematics control principle to calculate, the feed speed of the variable speed screw conveyor 302 is controlled through the screw conveyor control box 301, further the running temperature of the sludge drying device 303 is changed, and the optimal feed speed and the optimal running temperature for realizing sludge drying are ensured.
Specifically, the control core 1 is controlled to operate according to the following procedures:
step S1, the flue gas temperature monitoring device 202 installed at the air outlet end of the sludge drying device 303 carries out temperature monitoring on the drying waste gas 306, an electric signal is sent to the control core 1 to be compared with the discharged material water content 101 for calculation, the initial feeding speed of the variable speed screw conveyor 302 is adjusted, the preset value of the air outlet temperature 102 is 170 ℃, when the detection result of the flue gas temperature monitoring device 202 is less than 170 ℃, the control core 1 enters step S2, when the detection result of the flue gas temperature monitoring device 202 is =170 ℃, the control core 1 enters step S3, and when the detection result of the flue gas temperature monitoring device 202 is greater than 170 ℃, the control core 1 enters step S4;
step S2, the control core 1 increases the feeding speed of the variable speed screw conveyor 302 through the screw conveyor control box 301, the flue gas temperature monitoring device 202 detects that the operating temperature of the sludge drying device 303 is reduced, the sludge drying device 303 continues to operate until the moisture content of the sludge subjected to the first drying treatment is detected by the moisture detector 203 at the middle section of the sludge drying device 303, and the control core 1 enters step S5;
step S3, the control core 1 controls the feeding speed of the variable-speed screw conveyor 302 to keep unchanged through the screw conveyor control box 301, the operating temperature of the sludge drying device 303 measured by the flue gas temperature monitoring device 202 is unchanged, the sludge drying device 303 continues to operate until the moisture content of sludge subjected to first-stage drying treatment is detected by the moisture meter 203 at the middle section of the sludge drying device 303, and the control core 1 enters step S5;
step S4, the control core 1 reduces the feeding speed of the variable speed screw conveyor 302 through the screw conveyor control box 301, the flue gas temperature monitoring device 202 detects that the operating temperature of the sludge drying device 303 is increased, the sludge drying device 303 continues to operate until the moisture content of the sludge subjected to the first drying treatment is detected by the moisture detector 203 at the middle section of the sludge drying device 303, and the control core 1 enters step S5;
step S5, detecting the moisture content of sludge subjected to first-stage drying treatment by a humidity measuring instrument 203 arranged at the middle section of the sludge drying equipment 303, sending an electric signal to the control core 1 to compare with the discharged water content 101, wherein the preset value of the discharged water content 101 is 40%, when the detection result of the first-stage moisture content is less than 40%, the control core 1 enters step S6, when the detection result of the first-stage moisture content is = 40%, the control core 1 enters step S7, and when the detection result of the first-stage moisture content is greater than 40%, the control core 1 enters step S8;
step S6, the control core 1 increases the feeding speed of the variable speed screw conveyor 302 through the screw conveyor control box 301, the dehydration rate of the sludge drying equipment 303 is reduced, the sludge drying equipment 303 continues to operate, and the control core 1 enters step S9;
step S7, the control core 1 controls the feeding speed of the variable-speed screw conveyor 302 to keep unchanged through the screw conveyor control box 301, the dehydration rate of the sludge drying equipment 303 is unchanged, the sludge drying equipment 303 continues to operate, and the control core 1 enters step S9;
step S8, the control core 1 reduces the feeding speed of the variable speed screw conveyor 302 through the screw conveyor control box 301, the dehydration rate of the sludge drying equipment 303 is improved, the sludge drying equipment 303 continues to operate, and the control core 1 enters step S9;
step S9, detecting the moisture content of the sludge subjected to the second-stage drying treatment by the humidity measuring instrument 203 arranged in the direction of the discharge port of the sludge drying equipment 303, sending an electric signal to the control core 1 to compare with the discharged moisture content 101, wherein the preset value of the discharged moisture content 101 is 30%, when the detection result of the second-stage moisture content is less than 30%, the control core 1 enters step S6, when the detection result of the second-stage moisture content = 30%, the control core 1 enters step S7, and when the detection result of the second-stage moisture content is greater than 30%, the control core 1 enters step S8.
The working principle and the using process of the invention are as follows: the tire leather pyrolysis system 501 generates pyrolysis oil 503 and high-temperature flue gas 504 during operation, the pyrolysis oil 503 is converted into the high-temperature flue gas 504 through the combustion boiler 502, the high-temperature flue gas 504 is introduced into the sludge drying device 303 through a high-temperature pipeline, a worker firstly inputs the discharge water content 101, the discharge air temperature 102, the sludge 103 and the feed water content 104 into the control core 1 according to process requirements, the flue gas temperature monitoring device 202 arranged at the air outlet end of the sludge drying device 303 during operation of the control core 1 monitors the temperature of the dry waste gas 306, electric signals are processed and calculated by the control core 1, and the initial feeding speed of the variable-speed screw conveyor 302 is adjusted, so that the dry waste gas 306 tends to be stabilized at 170 ℃ which is preset; the sludge in the sludge bin 305 is weighed by the sludge weighing device 201 and then conveyed into a feed port of the variable-speed screw conveyor 302, and then conveyed into a feed port of the sludge drying device 303 by the variable-speed screw conveyor 302, at the moment, the sludge drying device 303 performs high-temperature drying treatment on the sludge, a humidity tester 203 arranged at the middle section of the sludge drying device 303 firstly performs sludge moisture content detection of first-section drying treatment, when the detected moisture content is less than 40% of preset moisture content, the screw conveyor control box 301 controls the variable-speed screw conveyor 302 to increase the conveying speed, further reduce the dehydration rate, improve the sludge drying efficiency of the sludge drying device 303, when the detected moisture content is more than 40% of preset moisture content, the screw conveyor control box 301 controls the variable-speed screw conveyor 302 to decrease the conveying speed, further improve the dehydration rate, and enable the moisture content of the sludge of the first-section drying treatment to gradually tend to 40, therefore, the water content of the sludge is reduced, if the detected water content is equal to the preset 40%, the conveying speed of the variable-speed screw conveyor 302 is kept unchanged, the water content of the sludge subjected to the first-stage drying treatment is maintained at a stable level, the sludge in the sludge drying equipment 303 is subjected to the first-stage treatment and then is subjected to the second-stage treatment, before the sludge reaches the discharge port of the sludge drying equipment 303, the humidity tester 203 arranged in the direction of the discharge port of the sludge drying equipment 303 is used for detecting the water content of the sludge subjected to the second-stage drying treatment, when the detected water content is less than the preset 30%, the screw conveyor control box 301 controls the variable-speed screw conveyor 302 to increase the conveying speed again, further reduces the dehydration rate, improves the sludge drying efficiency of the sludge drying equipment 303, and when the detected water content is greater than the preset 30%, the screw conveyor control box 301 controls the variable-speed screw, further improving the dehydration rate to enable the water content of the sludge subjected to the second stage of drying treatment to gradually approach to 30% so as to reduce the water content of the sludge, wherein if the detected water content is equal to the preset 30%, the conveying speed of the variable speed screw conveyor 302 is kept unchanged, and finally the dried sludge is put into the dry residue bin 304 from the discharge port of the sludge drying equipment 303;
the peculiar smell generated by the sludge to be treated and the treated sludge in the sludge bin 305 and the dry residue bin 304 enters the odor purifying device 401 through the exhaust pipeline for purification treatment, and the dry waste gas 306 with high oil smoke content is introduced into the flue gas purifying device 402 for independent purification treatment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. Sludge drying feed control system, its characterized in that: comprises a control core (1), a feedback module (2), a sludge treatment module (3), a post-treatment module (4) and a waste heat module (5), wherein the feedback module (2) comprises a sludge weighing device (201), a flue gas temperature monitoring device (202) and a humidity tester (203), the sludge treatment module (3) comprises a screw conveyor control box (301), a variable speed screw conveyor (302), a sludge drying device (303) and a dry slag bin (304), the control core (1) is electrically connected with the sludge weighing device (201), the flue gas temperature monitoring device (202), the humidity tester (203) and the screw conveyor control box (301), the screw conveyor control box (301) is electrically connected with the variable speed screw conveyor (302), the sludge weighing device (201) is positioned below a discharge port of the sludge bin (305), a feed end of the variable speed screw conveyor (302) is positioned at the bottom side of the sludge weighing device (201), the discharge end of variable speed screw conveyer (302) is located the feed inlet top of sludge drying equipment (303), dry residue feed bin (304) is located the below of sludge drying equipment (303) discharge end.
2. The sludge drying feed control system of claim 1, wherein: waste heat module (5) are including tire leather pyrolysis system (501) and combustion boiler (502), tire leather pyrolysis system (501) produce in the operation have pyrolysis oil (503) and high temperature flue gas (504), pyrolysis oil (503) accessible combustion boiler (502) turn into high temperature flue gas (504), high temperature flue gas (504) are through the high temperature pipeline introduce in sludge drying equipment (303).
3. The sludge drying feed control system of claim 1, wherein: aftertreatment module (4) are including odor purification equipment (401) and gas cleaning equipment (402), the end of giving vent to anger of sludge drying equipment (303) is through exhaust duct dry waste gas (306) of discharging into in to gas cleaning equipment (402), the air outlet of dry residue feed bin (304) and mud feed bin (305) is through the inlet end of exhaust duct intercommunication odor purification equipment (401), gas cleaning equipment (402) are one or more in scrubbing tower, carbon filter, the low temperature plasma UV photodissociation all-in-one.
4. The sludge drying feed control system of claim 1, wherein: the quantity of humidity measurement appearance (203) is two, one humidity measurement appearance (203) fixed mounting is in the interlude position of sludge drying equipment (303), another humidity measurement appearance (203) fixed mounting is in the discharge gate direction of sludge drying equipment (303).
5. The sludge drying feed control system of claim 1, wherein: the pre-input value of the control core (1) comprises discharged water content (101), gas outlet temperature (102), mud (103) and fed water content (104), and the flue gas temperature monitoring equipment (202) is fixedly installed at the gas outlet end of the sludge drying equipment (303).
6. The sludge drying feed control system of claim 1, wherein: the control core (1) is controlled to operate according to the following procedures:
s1, monitoring the temperature of the dry waste gas (306) by using the flue gas temperature monitoring device (202) arranged at the air outlet end of the sludge drying device (303), sending an electric signal to the control core (1) to compare with the discharged material water content (101), and adjusting the initial feeding speed of the variable speed screw conveyor (302), wherein the preset value of the air outlet temperature (102) is 170 ℃, when the detection result of the flue gas temperature monitoring device (202) is less than 170 ℃, the control core (1) enters S2, when the detection result of the flue gas temperature monitoring device (202) is =170 ℃, the control core (1) enters S3, and when the detection result of the flue gas temperature monitoring device (202) is more than 170 ℃, the control core (1) enters S4;
step S2, the control core (1) increases the feeding speed of the variable-speed screw conveyor (302) through the screw conveyor control box (301), the running temperature of the sludge drying equipment (303) is reduced through the detection of the flue gas temperature monitoring equipment (202), the sludge drying equipment (303) continues to run until the moisture content of the sludge subjected to drying treatment at the first section is detected by the moisture detector (203) at the middle section of the sludge drying equipment (303), and the control core (1) enters step S5;
s3, the control core (1) controls the feeding speed of the variable-speed screw conveyor (302) to keep unchanged through the screw conveyor control box (301), the flue gas temperature monitoring device (202) detects that the operating temperature of the sludge drying device (303) is unchanged, the sludge drying device (303) continues to operate until the humidity detector (203) at the middle section of the sludge drying device (303) detects the moisture content of the sludge subjected to the first-section drying treatment, and the control core (1) enters S5;
s4, the control core (1) reduces the feeding speed of the variable-speed screw conveyor (302) through the screw conveyor control box (301), the operation temperature of the sludge drying equipment (303) is increased by the flue gas temperature monitoring equipment (202), the sludge drying equipment (303) continuously operates until the humidity measuring instrument (203) at the middle section of the sludge drying equipment (303) detects the moisture content of sludge subjected to drying treatment at the first section, and the control core (1) enters S5;
step S5, detecting the moisture content of sludge subjected to first-stage drying treatment by a humidity measuring instrument (203) installed at the middle section of the sludge drying equipment (303), sending an electric signal to a control core (1) and comparing and calculating the moisture content of discharged material (101), wherein the preset value of the moisture content of discharged material (101) is 40%, when the detection result of the moisture content of the first section is less than 40%, the control core (1) enters step S6, when the detection result of the moisture content of the first section is = 40%, the control core (1) enters step S7, and when the detection result of the moisture content of the first section is greater than 40%, the control core (1) enters step S8;
s6, the control core (1) increases the feeding speed of the variable-speed screw conveyor (302) through the screw conveyor control box (301), the dehydration rate of the sludge drying equipment (303) is reduced, the sludge drying equipment (303) continues to operate, and the control core (1) enters S9;
s7, the control core (1) controls the feeding speed of the variable-speed screw conveyor (302) to keep unchanged through the screw conveyor control box (301), the dehydration rate of the sludge drying equipment (303) is unchanged, the sludge drying equipment (303) continues to operate, and the control core (1) enters S9;
s8, the control core (1) reduces the feeding speed of the variable-speed screw conveyor (302) through the screw conveyor control box (301), the dehydration rate of the sludge drying equipment (303) is improved, the sludge drying equipment (303) continues to operate, and the control core (1) enters S9;
step S9, detecting the moisture content of the sludge subjected to second-stage drying treatment by a humidity measuring instrument (203) installed in the direction of a discharge port of the sludge drying equipment (303), sending an electric signal to the control core (1) and the discharged water content (101) for comparison calculation, wherein the preset value of the discharged water content (101) is 30%, when the detection result of the second-stage moisture content is less than 30%, the control core (1) enters step S6, when the detection result of the second-stage moisture content is = 30%, the control core (1) enters step S7, and when the detection result of the second-stage moisture content is greater than 30%, the control core (1) enters step S8.
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| CN113248108A (en) * | 2021-06-28 | 2021-08-13 | 仁天环保科技有限责任公司 | Integrated sludge treatment control system and method |
| CN114593853A (en) * | 2022-03-14 | 2022-06-07 | 苏州西热节能环保技术有限公司 | Online monitoring device for output of sludge drying system, checking method of online monitoring device and storage medium |
| CN114956507A (en) * | 2022-06-01 | 2022-08-30 | 杰瑞环保科技有限公司 | Sludge treatment method and sludge treatment system |
| CN117945622A (en) * | 2024-02-02 | 2024-04-30 | 光大环保（中国）有限公司 | Sludge treatment system of heat storage garbage incineration power plant |
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