CN113045174A - Solar sludge drying system - Google Patents

Solar sludge drying system Download PDF

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Publication number
CN113045174A
CN113045174A CN202110267152.8A CN202110267152A CN113045174A CN 113045174 A CN113045174 A CN 113045174A CN 202110267152 A CN202110267152 A CN 202110267152A CN 113045174 A CN113045174 A CN 113045174A
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control module
central control
preset
sludge
time length
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CN113045174B (en
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张玮
罗春广
张世平
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Inner Mongolia Centure Environmental Technology Co ltd
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Inner Mongolia Centure Environmental Technology Co ltd
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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
    • 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
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • 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
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention relates to a solar sludge drying system, relating to the technical field of sludge drying, comprising a stirrer for stirring input sludge, the stirrer is provided with an additive adding unit which is used for adding additives into the stirrer, the output end of the stirrer is connected with a material conveying pipeline, the material conveying pipeline is used for conveying the stirred sludge to the solar dryer, the bottom of the inner wall of the solar dryer is provided with a drying plate which is used for drying the sludge, the tail end of the solar dryer is provided with an output port for outputting the dried sludge, the solar dryer comprises a high-temperature drying unit, a medium-high temperature drying unit and a medium-temperature drying unit, the high-temperature drying unit and the middle-high temperature drying unit are respectively provided with a humidity sensor at the upper part. The system effectively improves the drying efficiency of the sludge.

Description

Solar sludge drying system
Technical Field
The invention relates to the technical field of sludge drying, in particular to a solar sludge drying system.
Background
After gravity concentration and mechanical dehydration, the water content of sludge discharged from urban sewage treatment plants is about 80%, the sludge is large in volume and low in heat value, and the sludge is not suitable for aerobic composting, incineration and building material utilization, even landfill, and further dehydration and drying are needed.
With the industrial development and the acceleration of urbanization, industrial sludge and urban domestic sludge are increased day by day, however, equipment for treating sludge is few, the application is only found in individual countries in western Europe, and the drying modes mainly applied at present comprise traditional heat energy sludge drying and solar energy sludge drying.
The existing sludge drying equipment cannot accurately control the sludge drying process, and the difference of the water content of the dried sludge is large, so that the sludge drying efficiency is low.
Disclosure of Invention
Therefore, the invention provides a solar sludge drying system which is used for solving the problem of low sludge drying efficiency caused by the fact that the sludge drying time cannot be accurately controlled in the prior art.
In order to achieve the above object, the present invention provides a solar sludge drying system, comprising:
the system comprises a stirrer, an additive adding unit, a material conveying pipeline, a drying plate and an output port, wherein the stirrer is used for stirring input sludge, the additive adding unit is arranged on the stirrer and used for adding an additive into the stirrer, the output end of the stirrer is connected with the material conveying pipeline, the material conveying pipeline is used for conveying the stirred sludge into a solar dryer, the bottom of the inner wall of the solar dryer is provided with the drying plate, the drying plate is used for drying the sludge, the tail end of the solar dryer is provided with the output port, and the output port is used for outputting the dried sludge;
the solar dryer comprises a high-temperature drying unit, a medium-high temperature drying unit and a medium-temperature drying unit, humidity sensors are arranged above the high-temperature drying unit and the medium-high temperature drying unit and used for detecting air humidity, a solar heat collector is arranged above each drying unit and used for providing heat for the drying plate, a conveyor belt is arranged inside each drying unit and used for conveying sludge, a water outlet is formed in the bottom end of each drying unit and used for discharging moisture evaporated from the sludge, and a drive is arranged below the solar dryer and used for controlling the conveyor belt to convey the sludge;
the system is connected with a central control module through wireless, and the central control module is used for controlling the working process of each part;
when the central control module selects the additive amount of the additive, the central control module compares the volume of the sludge in the stirrer with a preset sludge volume, and selects the corresponding additive amount according to the comparison result;
when the central control module determines the stirring time length of the stirrer, the central control module compares the volume of sludge in the stirrer with a preset sludge volume and selects a corresponding stirring time length according to a comparison result, after the stirring time length is determined, the central control module compares the water content of the sludge in the stirrer with the preset sludge water content and selects a corresponding stirring time length adjusting coefficient according to the comparison result to adjust the stirring time length, after the adjustment is completed, the central control module compares the addition amount of an additive in the stirrer with the preset additive addition amount and selects a corresponding stirring time length correcting coefficient according to the comparison result to correct the stirring time length;
when the central control module determines the drying time length of the high-temperature drying unit, the central control module compares the volume of sludge in the stirrer with a preset sludge volume, selects a corresponding drying time length of the high-temperature drying unit according to a comparison result, compares the stirring time length of the stirrer with the preset stirring time length after the drying time length of the high-temperature drying unit is determined, and selects a corresponding drying time length compensation coefficient according to the comparison result to adjust the drying time length of the high-temperature drying unit;
when the central control module calculates the drying time length of the medium-high temperature drying unit, the central control module compares the air humidity in the high-temperature drying unit with the air humidity of a preset high-temperature drying unit, and selects a corresponding first time length adjusting parameter according to the comparison result to calculate the drying time length of the medium-high temperature drying unit; when the central control module calculates the drying time length of the medium-temperature drying unit, the central control module compares the air humidity in the medium-high temperature drying unit with the preset air humidity of the medium-high temperature drying unit, and selects a corresponding second time length adjusting parameter according to the comparison result to calculate the drying time length of the medium-temperature drying unit; when the drying of the medium-temperature drying unit is finished, the central control module compares the water discharge amount M of the medium-temperature drying unit with a water discharge standard value M1, and judges whether to output according to a comparison result.
Further, a first preset sludge volume V1, a second preset sludge volume V2 and a third preset sludge volume V3 are arranged in the central control module, wherein V1 is more than V2 and more than V3; the central control module is also provided with a first preset additive adding amount A1, a second preset additive adding amount A2 and a third preset additive adding amount A3, wherein A1 is more than A2 and more than A3;
when the central control module selects the additive amount of the additive, the central control module compares the volume V of the sludge in the stirrer with the volume of each preset sludge, and selects the corresponding additive amount according to the comparison result:
when V is not less than V1 and is less than V2, the central control module takes A1 as the additive adding amount;
when V is not less than V2 and is less than V3, the central control module takes A2 as the additive adding amount;
when V3 is less than or equal to V, the central control module takes A3 as the additive addition amount.
Further, a first preset stirring time length B1, a second preset stirring time length B2 and a third preset stirring time length B3 are further arranged in the central control module, wherein B1 is greater than B2 and is greater than B3;
when the central control module selects the stirring time length of the stirrer, the central control module compares the volume V of the sludge in the stirrer with the preset sludge volumes, and selects the corresponding stirring time length according to the comparison result:
when V is more than or equal to V1 and is less than V2, the central control module takes B1 as the stirring time;
when V is more than or equal to V2 and is less than V3, the central control module takes B2 as the stirring time;
when V3 is less than or equal to V, the central control module takes B3 as the stirring time length.
Further, when the central control module adjusts the selected ith preset stirring time length Bi, i is set to be 1,2 and 3, the central control module compares the water content C of the sludge in the stirrer with the preset sludge water content, and selects a corresponding stirring time length adjusting coefficient according to the comparison result to adjust the Bi:
when C is not less than C1 and is less than C2, the center control module selects a3 to adjust Bi;
when C is not less than C2 and is less than C3, the center control module selects a2 to adjust Bi;
when C3 is not more than C, the central control module selects a1 to adjust Bi;
when the j-th preset stirring time length adjusting coefficient aj is selected by the central control module to adjust Bi, j is set to be 1,2 and 3, the adjusted stirring time length is Bi ', and Bi' is set to be Bi multiplied by aj;
wherein C1 is a first preset sludge water content, C2 is a second preset sludge water content, C3 is a third preset sludge water content, and C1 is more than C2 and more than C3; a1 is a first preset stirring time length adjusting coefficient, a2 is a second preset stirring time length adjusting coefficient, a3 is a third preset stirring time length adjusting coefficient, and a1 is more than 0 and more than a2 and more than a3 is less than 1.
Further, when the central control module corrects the adjusted stirring time length Bi ', the central control module compares the additive amount a of the additive in the stirrer with the additive amount of each preset additive, and selects a corresponding stirring time length correction coefficient according to the comparison result to correct Bi':
when A is greater than or equal to A1 and is less than A2, the center control module selects b1 to correct Bi';
when A is greater than or equal to A2 and is less than A3, the center control module selects b2 to correct Bi';
when A3 is not more than A, the central control module selects b3 to correct Bi';
when the j-th preset stirring time length correction coefficient bj is selected by the central control module to correct Bi ', setting j to be 1,2 and 3, setting the corrected stirring time length to be Bi ', and setting Bi ″, which is Bi ' × bj;
wherein b1 is a first preset stirring time length correction coefficient, b2 is a second preset stirring time length correction coefficient, b3 is a third preset stirring time length correction coefficient, and b1 is more than 1 and more than b2 and more than b 3.
Further, when the central control module selects the drying time length of the high-temperature drying unit, the central control module compares the volume V of the sludge in the stirrer with the preset sludge volumes, and selects the corresponding drying time length of the high-temperature drying unit according to the comparison result:
when V is more than or equal to V1 and is more than or equal to V2, the central control module takes D1 as the drying time of the high-temperature drying unit;
when V is more than or equal to V2 and is more than or equal to V3, the central control module takes D2 as the drying time of the high-temperature drying unit;
when V3 is not more than V, the central control module takes D3 as the drying time of the high-temperature drying unit;
the drying time of the first preset high-temperature drying unit is D1, the drying time of the second preset high-temperature drying unit is D2, the drying time of the third preset high-temperature drying unit is D3, and D1 is larger than D2 and D3.
Further, a first preset drying time compensation coefficient m1, a second preset drying time compensation coefficient m2 and a third preset drying time compensation coefficient m3 are also arranged in the central control module, wherein m1 is greater than 1 and m2 is greater than m 3;
when the central control module adjusts the drying time length Di of the selected ith preset high-temperature drying unit, setting i to be 1,2 and 3, comparing the stirring time length Bi' of the stirrer with each preset stirring time length by the central control module, and selecting a corresponding drying time length compensation coefficient to adjust the Di according to the comparison result:
when B1 is not more than Bi "< B2, the center control module selects m1 to adjust Di;
when B2 is not more than Bi "< B3, the center control module selects m2 to adjust Di;
when B3 is less than or equal to Bi', the center control module selects m3 to adjust Di;
when the j-th preset drying time compensation coefficient mj is selected by the central control module to adjust Di, j is set to be 1,2 and 3, the drying time of the adjusted high-temperature drying unit is Di ', and Di' is set to be Di multiplied by mj.
Further, a middle-high temperature drying unit drying time length G is further set in the central control module, and G is set to be D × α, where D is the drying time length of the high temperature drying unit and α is a first time length adjustment parameter, the central control module is further provided with a first preset high temperature drying unit air humidity F1, a second preset high temperature drying unit air humidity F2, and a third preset high temperature drying unit air humidity F3, where F1 is greater than F2 and F3; the central control module is also provided with a first preset first time length adjusting parameter alpha 1, a second preset first time length adjusting parameter alpha 2 and a third preset first time length adjusting parameter alpha 3, wherein alpha 1 is more than 0 and more than alpha 2 and more than alpha 3 and less than 1;
when the central control module calculates the drying time G of the high-temperature drying unit, the central control module compares the air humidity F in the high-temperature drying unit with the air humidity of each preset high-temperature drying unit, and selects a corresponding first time adjustment parameter according to the comparison result:
when F1 is not less than F < F2, the central control module takes alpha 3 as a first time length adjusting parameter;
when F2 is not less than F < F3, the central control module takes alpha 2 as a first time length adjusting parameter;
when F3 is less than or equal to F, the central control module takes alpha 1 as a first time length adjusting parameter.
Further, a medium-temperature drying unit drying time length H is further set in the central control module, where H is G × β, β is a second time length adjustment parameter, a first preset medium-high temperature drying unit air humidity K1, a second preset medium-high temperature drying unit air humidity K2, and a third preset medium-high temperature drying unit air humidity K3 are further set in the central control module, where K1 is greater than K2 and K3; the central control module is also provided with a first preset second duration adjustment parameter beta 1, a second preset second duration adjustment parameter beta 2 and a third preset second duration adjustment parameter beta 3, wherein alpha 1 is more than 0 and more than alpha 2 and more than alpha 3 and less than 1;
when the central control module calculates the drying time H of the medium-temperature drying unit, the central control module compares the air humidity K in the medium-high temperature drying unit with the air humidity of each preset medium-high temperature drying unit, and selects a corresponding second time adjusting parameter according to the comparison result:
when K1 is more than or equal to K and less than K2, the central control module takes beta 3 as a second duration adjustment parameter;
when K2 is not less than K and is less than K3, the central control module takes beta 2 as a second duration adjustment parameter;
and when K3 is less than or equal to K, the central control module takes beta 1 as a second duration adjustment parameter.
Further, a drainage standard value M1 is set in the central control module, when the drying of the medium-temperature drying unit is completed, the central control module compares the drainage amount M of the medium-temperature drying unit with the drainage standard value M1, and determines whether to output:
when M is less than or equal to M1, the central control module judges that the sludge meets the output standard;
and when M is larger than M1, the central control module judges that the sludge does not meet the output standard, the central control module controls the medium-temperature drying unit to dry the sludge again, and after drying is finished, the central control module repeatedly judges until the sludge meets the output standard and outputs the sludge.
Compared with the prior art, the invention has the advantages that the central control module determines the stirring time of the stirrer according to the volume of the sludge, adjusts and corrects the stirring time according to the water content of the sludge and the additive amount of the additive, effectively ensures the stirring effect of the sludge by accurately controlling the stirring time of the sludge, thereby improving the sludge drying efficiency, determines the drying time of the high-temperature drying unit according to the volume of the sludge, calculates the drying time of the medium-temperature drying unit according to the drying time of the high-temperature drying unit, calculates the drying time of the medium-temperature drying unit according to the drying time of the medium-temperature drying unit, effectively ensures the drying efficiency of the sludge drying, judges whether the sludge drying is in accordance with the standard or not according to the water discharge amount of the medium-temperature drying unit after the drying is finished, and repeatedly dries the sludge, effectively ensures the drying effect of the sludge and further improves the drying efficiency of the sludge.
Furthermore, the central control module compares the volume V of the sludge in the stirrer with the volume of each preset sludge to select the corresponding additive addition amount, so that the accuracy of the additive addition amount is effectively guaranteed, and the drying efficiency of the sludge is further improved.
Furthermore, the central control module compares the volume V of the sludge in the stirrer with the volume of each preset sludge to select the corresponding stirring time, so that the accuracy of the stirring time is effectively guaranteed, and the drying efficiency of the sludge is further improved.
Further, the central control module compares the water content C of the sludge in the stirrer with the water content of each preset sludge to select a corresponding stirring time adjusting coefficient to adjust the stirring time, so that the stirring time accuracy is further ensured, and the sludge drying efficiency is further improved.
Furthermore, the central control module compares the addition A of the additive in the stirrer with the addition of each preset additive, selects the corresponding stirring time correction coefficient to correct the stirring time, further ensures the accuracy of the stirring time, and further improves the drying efficiency of the sludge.
Furthermore, the central control module compares the volume V of the sludge in the stirrer with the volume of each preset sludge to select the corresponding drying time of the high-temperature drying unit, so that the accuracy of the drying time of the high-temperature drying unit is effectively guaranteed, and the drying efficiency of the sludge is further improved.
Furthermore, the central control module compares the stirring time Bi' of the stirrer with each preset stirring time, selects the corresponding drying time compensation coefficient to adjust the drying time of the high-temperature drying unit, further ensures the accuracy of the drying time of the high-temperature drying unit, and further improves the drying efficiency of the sludge.
Furthermore, the central control module compares the air humidity F in the high-temperature drying unit with the air humidity of each preset high-temperature drying unit, selects the corresponding first time length adjustment parameter to calculate the drying time length of the medium-high temperature drying unit, effectively ensures the accuracy of the drying time length of the medium-high temperature drying unit, and further improves the drying efficiency of the sludge.
Furthermore, the central control module compares the air humidity K in the middle-high temperature drying unit with the air humidity of each preset middle-high temperature drying unit, selects a corresponding second time length adjusting parameter to calculate the drying time length of the middle-high temperature drying unit, effectively ensures the accuracy of the drying time length of the middle-high temperature drying unit, and further improves the drying efficiency of the sludge.
Further, the central control module compares the water discharge amount M of the medium-temperature drying unit with a water discharge standard value M1 to judge whether to output the sludge, so that the drying efficiency of the sludge is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a solar sludge drying system according to the present embodiment;
fig. 2 is a schematic sectional view of a drying unit of the solar sludge drying system according to the embodiment.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a solar sludge drying system, comprising:
the system comprises a stirrer 101, an additive adding unit 102 is arranged on the stirrer 101, the additive adding unit 102 is used for adding additives into the stirrer 101, the output end of the stirrer 101 is connected with a material conveying pipeline 103, the material conveying pipeline 103 is used for conveying stirred sludge into a solar dryer, a drying plate 113 is arranged at the bottom of the inner wall of the solar dryer, the drying plate 113 is used for drying sludge, an output port 112 is arranged at the tail end of the solar dryer, and the output port 112 is used for outputting dried sludge;
the solar dryer comprises a high-temperature drying unit 107, a medium-high temperature drying unit 108 and a medium-temperature drying unit 109, humidity sensors 105 are arranged above the inside of the high-temperature drying unit 107 and the medium-high temperature drying unit 108, the humidity sensors 105 are used for detecting air humidity, a solar heat collector 104 is arranged above each drying unit, the solar heat collector 104 is used for providing heat for a drying plate 113, a conveyor belt 106 is arranged inside each drying unit, the conveyor belt 106 is used for conveying sludge, a water outlet 111 is arranged at the bottom end of each drying unit, the water outlet 111 is used for discharging water evaporated from the sludge, a drive 110 is arranged below the solar dryer, and the drive 110 is used for controlling the conveyor belt 106 to convey the sludge;
the system is connected with a central control module through wireless, and the central control module is used for controlling the working process of each part;
specifically, when the central control module selects the additive amount of the additive, the central control module compares the volume of the sludge in the stirrer with a preset sludge volume, and selects the corresponding additive amount according to the comparison result;
when the central control module determines the stirring time length of the stirrer, the central control module compares the volume of sludge in the stirrer with a preset sludge volume and selects a corresponding stirring time length according to a comparison result, after the stirring time length is determined, the central control module compares the water content of the sludge in the stirrer with the preset sludge water content and selects a corresponding stirring time length adjusting coefficient according to the comparison result to adjust the stirring time length, after the adjustment is completed, the central control module compares the addition amount of an additive in the stirrer with the preset additive addition amount and selects a corresponding stirring time length correcting coefficient according to the comparison result to correct the stirring time length;
when the central control module determines the drying time length of the high-temperature drying unit, the central control module compares the volume of sludge in the stirrer with a preset sludge volume, selects a corresponding drying time length of the high-temperature drying unit according to a comparison result, compares the stirring time length of the stirrer with the preset stirring time length after the drying time length of the high-temperature drying unit is determined, and selects a corresponding drying time length compensation coefficient according to the comparison result to adjust the drying time length of the high-temperature drying unit;
when the central control module calculates the drying time length of the medium-high temperature drying unit, the central control module compares the air humidity in the high-temperature drying unit with the air humidity of a preset high-temperature drying unit, and selects a corresponding first time length adjusting parameter according to the comparison result to calculate the drying time length of the medium-high temperature drying unit; when the central control module calculates the drying time length of the medium-temperature drying unit, the central control module compares the air humidity in the medium-high temperature drying unit with the preset air humidity of the medium-high temperature drying unit, and selects a corresponding second time length adjusting parameter according to the comparison result to calculate the drying time length of the medium-temperature drying unit; when the drying of the medium-temperature drying unit is finished, the central control module compares the water discharge amount M of the medium-temperature drying unit with a water discharge standard value M1, and judges whether to output according to a comparison result.
Specifically, a first preset sludge volume V1, a second preset sludge volume V2 and a third preset sludge volume V3 are arranged in the central control module, wherein V1 is more than V2 and more than V3; the central control module is also provided with a first preset additive adding amount A1, a second preset additive adding amount A2 and a third preset additive adding amount A3, wherein A1 is more than A2 and more than A3;
when the central control module selects the additive amount of the additive, the central control module compares the volume V of the sludge in the stirrer with the volume of each preset sludge, and selects the corresponding additive amount according to the comparison result:
when V is not less than V1 and is less than V2, the central control module takes A1 as the additive adding amount;
when V is not less than V2 and is less than V3, the central control module takes A2 as the additive adding amount;
when V3 is less than or equal to V, the central control module takes A3 as the additive addition amount.
The volume V of mud in through with the mixer is compared with each mud volume of predetermineeing and is selected the additive addition that corresponds to the well accuse module, has effectively guaranteed the degree of accuracy of additive addition, has further improved the drying efficiency of mud.
Specifically, a first preset stirring time length B1, a second preset stirring time length B2 and a third preset stirring time length B3 are further arranged in the central control module, wherein B1 is more than B2 and more than B3;
when the central control module selects the stirring time length of the stirrer, the central control module compares the volume V of the sludge in the stirrer with the preset sludge volumes, and selects the corresponding stirring time length according to the comparison result:
when V is more than or equal to V1 and is less than V2, the central control module takes B1 as the stirring time;
when V is more than or equal to V2 and is less than V3, the central control module takes B2 as the stirring time;
when V3 is less than or equal to V, the central control module takes B3 as the stirring time length.
Specifically, a first preset sludge water content C1, a second preset sludge water content C2 and a third preset sludge water content C3 are further arranged in the central control module, wherein C1 is more than C2 and more than C3; the central control module is also provided with a first preset stirring time length adjusting coefficient a1, a second preset stirring time length adjusting coefficient a2 and a third preset stirring time length adjusting coefficient a3, wherein a1 is more than 0 and more than a2 and more than a3 and less than 1;
when the central control module adjusts the i-th preset stirring time length Bi for selection, i is set to be 1,2 and 3, the central control module compares the water content C of the sludge in the stirring machine with the water content of each preset sludge, and selects a corresponding stirring time length adjusting coefficient according to a comparison result to adjust the Bi:
when C is not less than C1 and is less than C2, the center control module selects a3 to adjust Bi;
when C is not less than C2 and is less than C3, the center control module selects a2 to adjust Bi;
when C3 is not more than C, the central control module selects a1 to adjust Bi;
when the j-th preset stirring time length adjusting coefficient aj is selected by the central control module to adjust Bi, j is set to be 1,2 and 3, the adjusted stirring time length is Bi ', and Bi' is set to be Bi multiplied by aj.
The central control module compares the water content C of the sludge in the stirrer with the water content of each preset sludge to select a corresponding stirring time adjusting coefficient to adjust the stirring time, so that the stirring time accuracy is further ensured, and the sludge drying efficiency is further improved.
Specifically, a first preset stirring time length correction coefficient b1, a second preset stirring time length correction coefficient b2 and a third preset stirring time length correction coefficient b3 are further arranged in the central control module, wherein b1 is greater than 1 and b2 is greater than b 3;
when the central control module corrects the adjusted stirring time length Bi ', the central control module compares the addition A of the additive in the stirrer with the addition of each preset additive, and selects a corresponding stirring time length correction coefficient according to the comparison result to correct Bi':
when A is greater than or equal to A1 and is less than A2, the center control module selects b1 to correct Bi';
when A is greater than or equal to A2 and is less than A3, the center control module selects b2 to correct Bi';
when A3 is not more than A, the central control module selects b3 to correct Bi';
when the j-th preset stirring time length correction coefficient bj is selected by the central control module to correct Bi ', j is set to be 1,2 and 3, the corrected stirring time length is Bi ", and Bi is set to be Bi' × bj.
Specifically, a first preset high-temperature drying unit drying time length D1, a second preset high-temperature drying unit drying time length D2 and a third preset high-temperature drying unit drying time length D3 are further arranged in the central control module, wherein D1 is more than D2 and more than D3;
when the central control module selects the drying time of the high-temperature drying unit, the central control module compares the volume V of the sludge in the stirrer with the preset sludge volumes, and selects the corresponding drying time of the high-temperature drying unit according to the comparison result:
when V is more than or equal to V1 and is more than or equal to V2, the central control module takes D1 as the drying time of the high-temperature drying unit;
when V is more than or equal to V2 and is more than or equal to V3, the central control module takes D2 as the drying time of the high-temperature drying unit;
and when the V3 is less than or equal to V, the central control module takes the D3 as the drying time of the high-temperature drying unit.
The volume V of mud is compared with each mud volume of predetermineeing in the mixer through well accuse module and is selected corresponding high temperature stoving unit stoving time, has effectively guaranteed the degree of accuracy of high temperature stoving unit stoving time, has further improved the drying efficiency of mud.
Specifically, a first preset drying time compensation coefficient m1, a second preset drying time compensation coefficient m2 and a third preset drying time compensation coefficient m3 are further arranged in the central control module, wherein m1 is greater than 1 and m2 is greater than m 3;
when the central control module adjusts the drying time length Di of the selected ith preset high-temperature drying unit, setting i to be 1,2 and 3, comparing the stirring time length Bi' of the stirrer with each preset stirring time length by the central control module, and selecting a corresponding drying time length compensation coefficient to adjust the Di according to the comparison result:
when B1 is not more than Bi "< B2, the center control module selects m1 to adjust Di;
when B2 is not more than Bi "< B3, the center control module selects m2 to adjust Di;
when B3 is less than or equal to Bi', the center control module selects m3 to adjust Di;
when the j-th preset drying time compensation coefficient mj is selected by the central control module to adjust Di, j is set to be 1,2 and 3, the drying time of the adjusted high-temperature drying unit is Di ', and Di' is set to be Di multiplied by mj.
Specifically, the central control module is further provided with a medium-high temperature drying unit drying time length G, wherein G is D × α, D is the drying time length of the high temperature drying unit, α is a first time length adjustment parameter, and the central control module is further provided with a first preset high temperature drying unit air humidity F1, a second preset high temperature drying unit air humidity F2, and a third preset high temperature drying unit air humidity F3, wherein F1 is greater than F2 and less than F3; the central control module is also provided with a first preset first time length adjusting parameter alpha 1, a second preset first time length adjusting parameter alpha 2 and a third preset first time length adjusting parameter alpha 3, wherein alpha 1 is more than 0 and more than alpha 2 and more than alpha 3 and less than 1;
when the central control module calculates the drying time G of the high-temperature drying unit, the central control module compares the air humidity F in the high-temperature drying unit with the air humidity of each preset high-temperature drying unit, and selects a corresponding first time adjustment parameter according to the comparison result:
when F1 is not less than F < F2, the central control module takes alpha 3 as a first time length adjusting parameter;
when F2 is not less than F < F3, the central control module takes alpha 2 as a first time length adjusting parameter;
when F3 is less than or equal to F, the central control module takes alpha 1 as a first time length adjusting parameter.
The central control module compares the air humidity F in the high-temperature drying unit with the air humidity of each preset high-temperature drying unit, selects the corresponding first time length adjustment parameter to calculate the drying time of the medium-high temperature drying unit, effectively ensures the accuracy of the drying time of the medium-high temperature drying unit, and further improves the drying efficiency of sludge.
Specifically, the central control module is further provided with a medium-temperature drying unit drying time length H, wherein H is G × β, β is a second time length adjustment parameter, the central control module is further provided with a first preset medium-high temperature drying unit air humidity K1, a second preset medium-high temperature drying unit air humidity K2, and a third preset medium-high temperature drying unit air humidity K3, wherein K1 is greater than K2 and K3; the central control module is also provided with a first preset second duration adjustment parameter beta 1, a second preset second duration adjustment parameter beta 2 and a third preset second duration adjustment parameter beta 3, wherein alpha 1 is more than 0 and more than alpha 2 and more than alpha 3 and less than 1;
when the central control module calculates the drying time H of the medium-temperature drying unit, the central control module compares the air humidity K in the medium-high temperature drying unit with the air humidity of each preset medium-high temperature drying unit, and selects a corresponding second time adjusting parameter according to the comparison result:
when K1 is more than or equal to K and less than K2, the central control module takes beta 3 as a second duration adjustment parameter;
when K2 is not less than K and is less than K3, the central control module takes beta 2 as a second duration adjustment parameter;
and when K3 is less than or equal to K, the central control module takes beta 1 as a second duration adjustment parameter.
Specifically, a drainage standard value M1 is set in the central control module, and when the middle-temperature drying unit finishes drying, the central control module compares the drainage M of the middle-temperature drying unit with a drainage standard value M1, and determines whether to output:
when M is less than or equal to M1, the central control module judges that the sludge meets the output standard;
and when M is larger than M1, the central control module judges that the sludge does not meet the output standard, the central control module controls the medium-temperature drying unit to dry the sludge again, and after drying is finished, the central control module repeatedly judges until the sludge meets the output standard and outputs the sludge.
The central control module compares the water discharge M of the medium-temperature drying unit with a water discharge standard value M1 to judge whether to output sludge, so that the drying efficiency of the sludge is further improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. 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 (10)

1. A solar sludge drying system is characterized by comprising:
the system comprises a stirrer, an additive adding unit, a material conveying pipeline, a drying plate and an output port, wherein the stirrer is used for stirring input sludge, the additive adding unit is arranged on the stirrer and used for adding an additive into the stirrer, the output end of the stirrer is connected with the material conveying pipeline, the material conveying pipeline is used for conveying the stirred sludge into a solar dryer, the bottom of the inner wall of the solar dryer is provided with the drying plate, the drying plate is used for drying the sludge, the tail end of the solar dryer is provided with the output port, and the output port is used for outputting the dried sludge;
the solar dryer comprises a high-temperature drying unit, a medium-high temperature drying unit and a medium-temperature drying unit, humidity sensors are arranged above the high-temperature drying unit and the medium-high temperature drying unit and used for detecting air humidity, a solar heat collector is arranged above each drying unit and used for providing heat for the drying plate, a conveyor belt is arranged inside each drying unit and used for conveying sludge, a water outlet is formed in the bottom end of each drying unit and used for discharging moisture evaporated from the sludge, and a drive is arranged below the solar dryer and used for controlling the conveyor belt to convey the sludge;
the system is connected with the central control module through wireless to control the working process of each part;
when the central control module selects the additive amount of the additive, the central control module compares the volume of the sludge in the stirrer with a preset sludge volume, and selects the corresponding additive amount according to the comparison result;
when the central control module determines the stirring time length of the stirrer, the central control module compares the volume of sludge in the stirrer with a preset sludge volume and selects a corresponding stirring time length according to a comparison result, after the stirring time length is determined, the central control module compares the water content of the sludge in the stirrer with the preset sludge water content and selects a corresponding stirring time length adjusting coefficient according to the comparison result to adjust the stirring time length, after the adjustment is completed, the central control module compares the addition amount of an additive in the stirrer with the preset additive addition amount and selects a corresponding stirring time length correcting coefficient according to the comparison result to correct the stirring time length;
when the central control module determines the drying time length of the high-temperature drying unit, the central control module compares the volume of sludge in the stirrer with a preset sludge volume, selects a corresponding drying time length of the high-temperature drying unit according to a comparison result, compares the stirring time length of the stirrer with the preset stirring time length after the drying time length of the high-temperature drying unit is determined, and selects a corresponding drying time length compensation coefficient according to the comparison result to adjust the drying time length of the high-temperature drying unit;
when the central control module calculates the drying time length of the medium-high temperature drying unit, the central control module compares the air humidity in the high-temperature drying unit with the air humidity of a preset high-temperature drying unit, and selects a corresponding first time length adjusting parameter according to the comparison result to calculate the drying time length of the medium-high temperature drying unit; when the central control module calculates the drying time length of the medium-temperature drying unit, the central control module compares the air humidity in the medium-high temperature drying unit with the preset air humidity of the medium-high temperature drying unit, and selects a corresponding second time length adjusting parameter according to the comparison result to calculate the drying time length of the medium-temperature drying unit; when the drying of the medium-temperature drying unit is finished, the central control module compares the water discharge amount M of the medium-temperature drying unit with a water discharge standard value M1, and judges whether to output according to a comparison result.
2. The solar sludge drying system of claim 1, wherein a first preset sludge volume V1, a second preset sludge volume V2 and a third preset sludge volume V3 are provided in the central control module, wherein V1 < V2 < V3; the central control module is also provided with a first preset additive adding amount A1, a second preset additive adding amount A2 and a third preset additive adding amount A3, wherein A1 is more than A2 and more than A3;
when the central control module selects the additive amount of the additive, the central control module compares the volume V of the sludge in the stirrer with the volume of each preset sludge, and selects the corresponding additive amount according to the comparison result:
when V is not less than V1 and is less than V2, the central control module takes A1 as the additive adding amount;
when V is not less than V2 and is less than V3, the central control module takes A2 as the additive adding amount;
when V3 is less than or equal to V, the central control module takes A3 as the additive addition amount.
3. The solar sludge drying system of claim 2, wherein the central control module further comprises a first preset stirring time period B1, a second preset stirring time period B2 and a third preset stirring time period B3, wherein B1 < B2 < B3;
when the central control module selects the stirring time length of the stirrer, the central control module compares the volume V of the sludge in the stirrer with the preset sludge volumes, and selects the corresponding stirring time length according to the comparison result:
when V is more than or equal to V1 and is less than V2, the central control module takes B1 as the stirring time;
when V is more than or equal to V2 and is less than V3, the central control module takes B2 as the stirring time;
when V3 is less than or equal to V, the central control module takes B3 as the stirring time length.
4. The solar sludge drying system of claim 3, wherein when the central control module adjusts the selected ith preset stirring time length Bi, i is set to 1,2,3, the central control module compares the water content C of the sludge in the stirrer with the water content of each preset sludge, and selects a corresponding stirring time length adjustment coefficient according to the comparison result to adjust Bi:
when C is not less than C1 and is less than C2, the center control module selects a3 to adjust Bi;
when C is not less than C2 and is less than C3, the center control module selects a2 to adjust Bi;
when C3 is not more than C, the central control module selects a1 to adjust Bi;
when the j-th preset stirring time length adjusting coefficient aj is selected by the central control module to adjust Bi, j is set to be 1,2 and 3, the adjusted stirring time length is Bi ', and Bi' is set to be Bi multiplied by aj;
wherein C1 is a first preset sludge water content, C2 is a second preset sludge water content, C3 is a third preset sludge water content, and C1 is more than C2 and more than C3; a1 is a first preset stirring time length adjusting coefficient, a2 is a second preset stirring time length adjusting coefficient, a3 is a third preset stirring time length adjusting coefficient, and a1 is more than 0 and more than a2 and more than a3 is less than 1.
5. The solar sludge drying system of claim 4, wherein when the central control module corrects the adjusted stirring time length Bi ', the central control module compares the additive amount A of the additive in the stirrer with each preset additive amount, and selects a corresponding stirring time length correction coefficient according to the comparison result to correct Bi':
when A is greater than or equal to A1 and is less than A2, the center control module selects b1 to correct Bi';
when A is greater than or equal to A2 and is less than A3, the center control module selects b2 to correct Bi';
when A3 is not more than A, the central control module selects b3 to correct Bi';
when the j-th preset stirring time length correction coefficient bj is selected by the central control module to correct Bi ', setting j to be 1,2 and 3, setting the corrected stirring time length to be Bi ', and setting Bi ″, which is Bi ' × bj;
wherein b1 is a first preset stirring time length correction coefficient, b2 is a second preset stirring time length correction coefficient, b3 is a third preset stirring time length correction coefficient, and b1 is more than 1 and more than b2 and more than b 3.
6. The solar sludge drying system of claim 5, wherein when the central control module selects the drying time of the high temperature drying unit, the central control module compares the volume V of the sludge in the mixer with each preset volume of the sludge, and selects the corresponding drying time of the high temperature drying unit according to the comparison result:
when V is more than or equal to V1 and is more than or equal to V2, the central control module takes D1 as the drying time of the high-temperature drying unit;
when V is more than or equal to V2 and is more than or equal to V3, the central control module takes D2 as the drying time of the high-temperature drying unit;
when V3 is not more than V, the central control module takes D3 as the drying time of the high-temperature drying unit;
the drying time of the first preset high-temperature drying unit is D1, the drying time of the second preset high-temperature drying unit is D2, the drying time of the third preset high-temperature drying unit is D3, and D1 is larger than D2 and D3.
7. The solar sludge drying system of claim 6, wherein the central control module further comprises a first preset drying time compensation coefficient m1, a second preset drying time compensation coefficient m2, and a third preset drying time compensation coefficient m3, wherein 1 < m1 < m2 < m 3;
when the central control module adjusts the drying time length Di of the selected ith preset high-temperature drying unit, setting i to be 1,2 and 3, comparing the stirring time length Bi' of the stirrer with each preset stirring time length by the central control module, and selecting a corresponding drying time length compensation coefficient to adjust the Di according to the comparison result:
when B1 is not more than Bi "< B2, the center control module selects m1 to adjust Di;
when B2 is not more than Bi "< B3, the center control module selects m2 to adjust Di;
when B3 is less than or equal to Bi', the center control module selects m3 to adjust Di;
when the j-th preset drying time compensation coefficient mj is selected by the central control module to adjust Di, j is set to be 1,2 and 3, the drying time of the adjusted high-temperature drying unit is Di ', and Di' is set to be Di multiplied by mj.
8. The solar sludge drying system of claim 7, wherein the central control module further includes a middle/high temperature drying unit drying time period G, where G is set to D × α, where D is the drying time period of the high temperature drying unit, and α is a first time period adjustment parameter, and the central control module further includes a first preset high temperature drying unit air humidity F1, a second preset high temperature drying unit air humidity F2, and a third preset high temperature drying unit air humidity F3, where F1 < F2 < F3; the central control module is also provided with a first preset first time length adjusting parameter alpha 1, a second preset first time length adjusting parameter alpha 2 and a third preset first time length adjusting parameter alpha 3, wherein alpha 1 is more than 0 and more than alpha 2 and more than alpha 3 and less than 1;
when the central control module calculates the drying time G of the high-temperature drying unit, the central control module compares the air humidity F in the high-temperature drying unit with the air humidity of each preset high-temperature drying unit, and selects a corresponding first time adjustment parameter according to the comparison result:
when F1 is not less than F < F2, the central control module takes alpha 3 as a first time length adjusting parameter;
when F2 is not less than F < F3, the central control module takes alpha 2 as a first time length adjusting parameter;
when F3 is less than or equal to F, the central control module takes alpha 1 as a first time length adjusting parameter.
9. The solar sludge drying system of claim 8, wherein the central control module further comprises a medium-temperature drying unit drying time H, where H is G × β, where β is a second time adjustment parameter, and the central control module further comprises a first preset medium-high temperature drying unit air humidity K1, a second preset medium-high temperature drying unit air humidity K2, and a third preset medium-high temperature drying unit air humidity K3, where K1 < K2 < K3; the central control module is also provided with a first preset second duration adjustment parameter beta 1, a second preset second duration adjustment parameter beta 2 and a third preset second duration adjustment parameter beta 3, wherein alpha 1 is more than 0 and more than alpha 2 and more than alpha 3 and less than 1;
when the central control module calculates the drying time H of the medium-temperature drying unit, the central control module compares the air humidity K in the medium-high temperature drying unit with the air humidity of each preset medium-high temperature drying unit, and selects a corresponding second time adjusting parameter according to the comparison result:
when K1 is more than or equal to K and less than K2, the central control module takes beta 3 as a second duration adjustment parameter;
when K2 is not less than K and is less than K3, the central control module takes beta 2 as a second duration adjustment parameter;
and when K3 is less than or equal to K, the central control module takes beta 1 as a second duration adjustment parameter.
10. The solar sludge drying system of claim 9, wherein a drainage standard value M1 is set in the central control module, and when the middle-temperature drying unit finishes drying, the central control module compares the drainage M of the middle-temperature drying unit with a drainage standard value M1, and determines whether to output:
when M is less than or equal to M1, the central control module judges that the sludge meets the output standard;
and when M is larger than M1, the central control module judges that the sludge does not meet the output standard, the central control module controls the medium-temperature drying unit to dry the sludge again, and after drying is finished, the central control module repeatedly judges until the sludge meets the output standard and outputs the sludge.
CN202110267152.8A 2021-03-12 2021-03-12 Solar sludge drying system Active CN113045174B (en)

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