CN110950515A - Half-dry sludge conveying system with matching device - Google Patents
Half-dry sludge conveying system with matching device Download PDFInfo
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- CN110950515A CN110950515A CN201911361636.8A CN201911361636A CN110950515A CN 110950515 A CN110950515 A CN 110950515A CN 201911361636 A CN201911361636 A CN 201911361636A CN 110950515 A CN110950515 A CN 110950515A
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- Prior art keywords
- sludge
- bin
- semi
- matching
- wet
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- 239000010802 sludge Substances 0.000 title claims abstract description 198
- 239000003814 drug Substances 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims description 20
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/721—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in the same receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7175—Feed mechanisms characterised by the means for feeding the components to the mixer using propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
- B01F35/754551—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle using helical screws
Abstract
A half-dry sludge conveying system with a matching device is characterized in that a matching mechanism is arranged behind the outlet of a drier and in front of a half-dry sludge bin, the matching mechanism comprises a matching bin, a matching machine and a second wet sludge conveying system, the matching bin is arranged at the lower side of the drier, sludge discharged by the drier enters the matching bin, the second wet sludge conveying system comprises a wet sludge small bin, a second wet sludge conveying pump and a wet sludge conveying pipeline, the second wet sludge conveying pump conveys wet sludge in the wet sludge small bin to the matching bin, the wet sludge is mixed with the medicament conveyed by the medicament conveying pump and the dried sludge from the drier in the matching bin and then enters the matching machine for matching, and moisture sensors are respectively arranged at the outlet of the drier, the inlet of the second wet sludge screw pump and the outlet of the matching machine to respectively monitor the moisture content of the sludge at each position in real time. The technical scheme provided by the invention effectively controls the water content of the semi-dry sludge within a required range, and is beneficial to incineration treatment of the sludge.
Description
Technical Field
The invention relates to a sludge conveying device, in particular to a semi-dry sludge conveying system with a matching device.
Background
The existing typical sludge drying incineration sludge conveying process flow is as follows: the sludge treatment plant receives wet sludge, stores and conveys the wet sludge to a drier for drying, the dried sludge is discharged from the drier, enters a semi-dry sludge hopper and is conveyed to a sludge incineration hearth by a semi-dry sludge plunger pump for incineration treatment. Because the sludge received by the sludge treatment plant has wide sources and the characteristics of the sludge are greatly influenced by seasonal changes, the thin-layer sludge drier cannot quickly, effectively and accurately control the water content of the semi-dry sludge. The moisture content of the semi-dry sludge is the first important factor influencing the drying and incineration of the sludge, and the instability of the moisture content of the sludge can cause the great fluctuation of the operation load of the incinerator, thereby bringing difficulty to the combustion adjustment. On the other hand, due to the particularity of the components of the sludge, the tail gas generated by sludge incineration has certain corrosivity, and in order to reduce the corrosion, a method of adding a medicament into a sludge semi-dry bin is generally adopted to change the chemical components of the sludge semi-dry bin, so that the corrosivity of the smoke generated by the sludge in the subsequent incineration is reduced. However, the adding mode can not fully mix the sludge and the medicament, thereby affecting the performance of the medicament and causing unnecessary waste.
Disclosure of Invention
In order to overcome the problems of the prior art, the invention provides a semi-dry sludge conveying system with a matching device, a matching mechanism is arranged behind the outlet of the drier and in front of the semi-dry sludge bin, the matching mechanism comprises a matching bin, a matching machine and a second wet sludge conveying system, the matching bin is arranged at the lower side of the drier, sludge discharged by the drier enters the matching bin, the second wet sludge conveying system comprises a wet sludge small bin, a second wet sludge conveying pump and a wet sludge conveying pipeline, the second wet sludge conveying pump conveys wet sludge in the wet sludge small bin to the matching bin, the wet sludge is mixed with the medicament conveyed by the medicament conveying pump and the dried sludge from the drier in the matching bin and then enters the matching machine for matching, and moisture sensors are respectively arranged at the outlet of the drier, the inlet of the second wet sludge screw pump and the outlet of the matching machine to respectively monitor the moisture content of the sludge at each position in real time. The water content of the semi-dry sludge is effectively controlled within a required range, and the incineration treatment of the sludge is facilitated.
The technical scheme includes that the semi-dry sludge conveying system with the matching device sequentially comprises a first wet sludge screw pump, a drying machine, a semi-dry sludge bin, a semi-dry sludge plunger pump and a saturated steam conveying system in the flowing direction of sludge, wet sludge is conveyed into the drying machine through the first wet sludge screw pump, the sludge is subjected to semi-drying treatment by a saturated steam heat supply source, the sludge subjected to semi-drying treatment is discharged from an outlet of the drying machine and enters the semi-dry sludge bin, and then the semi-dry sludge is conveyed into a hearth for incineration treatment by the semi-dry sludge plunger pump through a conveying pipeline;
the semi-dry sludge gathering and gathering device is characterized in that a gathering mechanism is further arranged behind an outlet of the drier and in front of the semi-dry sludge bin, the gathering mechanism comprises a gathering bin, a gathering machine and a second wet sludge conveying system, the gathering bin is arranged on the lower side of the drier, sludge discharged by the drier enters the gathering bin, the second wet sludge conveying system comprises a wet sludge small bin, a second wet sludge conveying pump and a wet sludge conveying pipeline, the second wet sludge conveying pump conveys wet sludge in the wet sludge small bin to the gathering bin, the wet sludge is mixed with a medicament conveyed by the medicament conveying pump and dried sludge from the drier in the gathering bin and then enters the gathering machine to be gathered, and moisture sensors are respectively arranged at the outlet of the drier, an inlet of the second wet sludge screw pump and an outlet of the gathering machine to respectively monitor the moisture content of the sludge at each position in real time.
Preferably, an automatic weighing machine is also arranged in the wet sludge small bin.
Preferably, the wet sludge screw pump is controlled by a frequency converter, and the frequency converter controls the conveying capacity of the second wet sludge screw pump.
Preferably, the propulsion shaft of the pinch machine adopts a double-shaft spiral structure and is provided with spiral fins with various structures.
Preferably, the double-shaft spiral propelling shaft of the matching machine is provided with continuous spiral fins at the feeding section, intermittent spiral fins at the matching section and continuous spiral at the discharging section.
The invention has the beneficial effects that: the invention provides a semi-dry sludge conveying system with a matching device, wherein a matching mechanism is arranged behind an outlet of a drier and in front of a semi-dry sludge bin, the matching mechanism comprises a matching bin, a matching machine and a second wet sludge conveying system, the matching bin is arranged at the lower side of the drier, sludge discharged by the drier enters the matching bin, the second wet sludge conveying system comprises a wet sludge small bin, a second wet sludge conveying pump and a wet sludge conveying pipeline, the second wet sludge conveying pump conveys wet sludge in the wet sludge small bin to the matching bin, the wet sludge is mixed with the medicament conveyed by the medicament conveying pump and the dried sludge from the drying machine in the matching bin and then enters the matching machine for matching, and moisture sensors are respectively arranged at the outlet of the drier, the inlet of the second wet sludge screw pump and the outlet of the matching machine to respectively monitor the moisture content of the sludge at each position in real time. The water content of the semi-dry sludge is effectively controlled within a required range, and the incineration treatment of the sludge is facilitated.
Drawings
Fig. 1 is a diagram of a system arrangement according to one embodiment of the prior art.
Fig. 2-3 are schematic structural diagrams of an embodiment of the present invention, wherein fig. 2 is a schematic overall structural diagram, and fig. 3 is an enlarged schematic partial structural diagram.
In the figure:
1. a first wet sludge screw pump;
2. a drying machine;
3. a medicament delivery pump;
4. a semi-dry sludge bin;
5. a semi-dry sludge plunger pump, 5A, a sludge conveying pipeline;
6. a saturated steam delivery system;
7. a matching mechanism;
7.1 matching the bins;
7.2 matching machine, 7.21 spiral propelling shaft, 7.21A feeding section, 7.21B matching section and 7.21C discharging section
7.3 a second wet sludge delivery system;
7.31 a small wet sludge bin, 7.32 a second wet sludge pump, 7.33 a wet sludge conveying pipeline and 7.34 an automatic weighing machine;
7.41, 7.42, 7.43 moisture sensors.
Detailed Description
Fig. 1 is a schematic diagram of a system layout according to an embodiment of the prior art. The drawing shows that in the prior art, a semi-dry sludge conveying system with a matching device sequentially comprises a first wet sludge screw pump 1, a drier 2, a semi-dry sludge bin 4, a semi-dry sludge plunger pump 5 and a saturated steam conveying system 6 in the sludge flowing direction, wet sludge is conveyed into the drier 2 through the first wet sludge screw pump 1, sludge is subjected to semi-drying treatment by a saturated steam heat supply source, sludge subjected to semi-drying treatment is discharged from an outlet of the drier 2 and enters the semi-dry sludge bin 4, and then the semi-dry sludge is conveyed into a hearth for incineration treatment through a conveying pipeline by the semi-dry sludge plunger pump 5. A medicament delivery pump 3 is also included, the medicament delivery pump 3 delivering medicament into the semi-dry sludge silo 4.
Due to the particularity of the components of the sludge, tail gas generated by sludge incineration has certain corrosivity, and in order to reduce the corrosion, a method of adding a medicament into a sludge semi-dry bin is generally adopted to change the chemical components of the tail gas, so that the corrosivity of smoke generated by the sludge in subsequent incineration is reduced. However, the adding mode can not fully mix the sludge and the medicament, thereby affecting the performance of the medicament and causing unnecessary waste.
Fig. 2-3 are schematic structural diagrams of an embodiment of the present invention, wherein fig. 2 is a schematic overall structural diagram, and fig. 3 is an enlarged schematic partial structural diagram.
In the figure, different from the prior art, in the present embodiment, a matching mechanism 7 is further arranged after the outlet of the drying machine 2 and before the semi-dry sludge bin 4, the matching mechanism 7 comprises a matching bin 7.1, a matching machine 7.2 and a second wet sludge conveying system 7.3, the matching bin 7.1 is arranged at the lower side of the drying machine 2, sludge discharged from the drying machine 2 enters the matching bin 7.1, the second wet sludge conveying system 7.3 comprises a wet sludge small bin 7.31, a second wet sludge conveying pump 7.32 and a wet sludge conveying pipeline 7.33, and the second wet sludge conveying pump 7.32 conveys wet sludge in the wet sludge small bin 7.31 to the matching bin 7.1, mixes with a medicament conveyed by the medicament conveying pump and sludge from the drying machine 2 in the drying matching bin 7.1, and then enters the matching machine 7.2 for matching.
And moisture sensors 7.41, 7.42 and 7.43 are respectively arranged at the outlet of the drier 2, the inlet of the second wet sludge screw pump 7.32 and the outlet of the scooping machine 7.2 for monitoring the moisture content of the sludge at each position in real time. And controlling the conveying amount of the second wet sludge screw pump 7.32 according to the sludge water content measured at the three positions to achieve the optimal matching effect.
When the water content of the material at the outlet of the matching machine 7.2 deviates from a set value, the control system calculates the delivery volume of the second wet sludge required to be matched for reaching the set water content by using the calculation model and based on the water content of the sludge at the outlet of the drying machine 2 and the inlet of the second wet sludge screw pump 7.32. The figure shows that the wet sludge small bin 7.31 is provided with an automatic weighing machine 7.34, the second wet sludge screw pump 7.32 adopts variable frequency control, the variable frequency opening degree of the second wet sludge screw pump 7.32 is controlled according to a weighing signal of the automatic weighing machine 7.34, and the conveying capacity of the second wet sludge screw pump is controlled so as to achieve the effect of quantitatively conveying wet sludge.
The specific calculation method comprises the following steps: the conveying capacity M1 of the drier 2 can be set by a drier control system, the moisture content of dry sludge at the outlet of the drier 2 is M1, the conveying capacity M2 of a second wet sludge screw pump, the moisture content of wet sludge at the outlet of the second wet sludge screw pump is M2, the total amount of sludge at the outlet of the scooping machine 7.2 is M1+ M2, and the moisture content M3 at the outlet of the scooping machine 2 is as follows: (M1+ M2) M3 ═ M1M1+ M2M2, giving:
in actual operation, because the adjustment hysteresis of the drier 2 is obvious, the processing capacity of the drier 2 is usually set to be a fixed value, and the inlet steam parameter of the drier 2 is properly improved, so that the drier 2 operates under the working condition that the water content is slightly lower than the target sludge water content for a long time, and the aim of accurately controlling the matching sludge water content is achieved by quantitatively changing the matching amount m2 of wet sludge.
A double-shaft spiral propelling shaft 7.21 of the matching machine 7.2 is provided with continuous spiral fins at a feeding section 7.21A, intermittent spiral fins at a matching section 7.21B and continuous spiral fins at a discharging section 7.21C.
Fig. 3 shows that in the present example, the propulsion shaft 7.21 of the pinch machine 7.2 adopts a biaxial spiral structure and is provided with spiral fins of various structures. The spiral fins are plated with wear-resistant paint, so that the hardness is high and the wear resistance is good. The drawing shows that the double-helix propelling shaft 7.21 is divided into three sections according to different positions, namely a feeding section 7.21A, a matching section 7.21B and a discharging section 7.21C. Wherein the feeding section 7.21A is continuous helical structure, can avoid having the transport blind spot in the match-making machine, avoids the unable transport of material. The matching section 7.21B is of an interrupted spiral structure, the structure can increase the stirring and cutting capabilities of the spiral, so that materials can be uniformly matched and stirred, the interrupted spiral can increase the retention time of the materials in the matching machine, and the matching effect is further optimized. The discharge section 7.21C is of a continuous spiral structure, and the structure can increase the material conveying speed of the outlet of the matching machine and avoid blocking the matching machine. The double-shaft screw is driven by a synchronous gear, and the two screws synchronously rotate in opposite directions to extrude the material. Cutting, stirring and conveying.
Claims (5)
1. A semi-dry sludge conveying system with a matching device sequentially comprises a first wet sludge screw pump, a drier, a semi-dry sludge bin, a semi-dry sludge plunger pump and a saturated steam conveying system in the flowing direction of sludge, wherein wet sludge is conveyed into the drier through the first wet sludge screw pump, the sludge is subjected to semi-drying treatment by a saturated steam heat supply source, the sludge subjected to semi-drying treatment is discharged from an outlet of the drier and enters the semi-dry sludge bin, and then the semi-dry sludge is conveyed into a hearth for incineration treatment by the semi-dry sludge plunger pump through a conveying pipeline, and the system also comprises a medicament conveying pump,
the semi-dry sludge gathering and gathering device is characterized in that a gathering mechanism is further arranged behind an outlet of the drier and in front of the semi-dry sludge bin, the gathering mechanism comprises a gathering bin, a gathering machine and a second wet sludge conveying system, the gathering bin is arranged on the lower side of the drier, sludge discharged by the drier enters the gathering bin, the second wet sludge conveying system comprises a wet sludge small bin, a second wet sludge conveying pump and a wet sludge conveying pipeline, the second wet sludge conveying pump conveys wet sludge in the wet sludge small bin to the gathering bin, the wet sludge is mixed with a medicament conveyed by the medicament conveying pump and dried sludge from the drier in the gathering bin and then enters the gathering machine to be gathered, and moisture sensors are respectively arranged at the outlet of the drier, an inlet of the second wet sludge screw pump and an outlet of the gathering machine to respectively monitor the moisture content of the sludge at each position in real time.
2. The semi-dry sludge conveying system with the matching device as claimed in claim 1, wherein an automatic weighing machine is further arranged in the wet sludge cabin.
3. The semi-dry sludge conveying system with the matching device as claimed in claim 1, wherein a frequency converter is further arranged, and the output of the wet sludge screw pump is controlled by the frequency converter.
4. The semi-dry sludge conveying system with the matching device as claimed in claim 1, wherein the propulsion shaft of the matching device adopts a double-shaft spiral structure and is provided with spiral fins with various structures along the axis.
5. The semi-dry sludge conveying system with the matching device as claimed in claim 4, wherein a double-shaft spiral propelling shaft of the matching machine is provided with continuous spiral fins at a feeding section, intermittent spiral fins at a matching section and continuous spirals at a discharging section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911361636.8A CN110950515A (en) | 2019-12-25 | 2019-12-25 | Half-dry sludge conveying system with matching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911361636.8A CN110950515A (en) | 2019-12-25 | 2019-12-25 | Half-dry sludge conveying system with matching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110950515A true CN110950515A (en) | 2020-04-03 |
Family
ID=69984153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911361636.8A Pending CN110950515A (en) | 2019-12-25 | 2019-12-25 | Half-dry sludge conveying system with matching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110950515A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830621A (en) * | 2010-04-13 | 2010-09-15 | 广州珞珈环境技术有限公司 | Sewage and sludge drying and fueling treatment system and process |
| CN102206030A (en) * | 2010-03-30 | 2011-10-05 | 北京纬纶华业环保科技股份有限公司 | Method for integrating sludge dewatering and sludge damp drying |
| CN203545853U (en) * | 2013-09-06 | 2014-04-16 | 上海申耀环保工程有限公司 | Mixing and conveying equipment for sludge treatment |
| CN105417923A (en) * | 2015-12-16 | 2016-03-23 | 普利资环境科技（苏州）有限公司 | Sludge drying system |
| CN109764340A (en) * | 2018-12-17 | 2019-05-17 | 上海康恒环境股份有限公司 | A kind of method that semi-dry sludge cooperates with burning disposal with rubbish |
| CN109849218A (en) * | 2018-12-24 | 2019-06-07 | 青岛海诺中天科技股份有限公司 | Plastic foam particle overlay film drying machine agitating device |
| CN211871757U (en) * | 2019-12-25 | 2020-11-06 | 深圳市能源环保有限公司 | Half-dry sludge conveying system with matching device |
-
2019
- 2019-12-25 CN CN201911361636.8A patent/CN110950515A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206030A (en) * | 2010-03-30 | 2011-10-05 | 北京纬纶华业环保科技股份有限公司 | Method for integrating sludge dewatering and sludge damp drying |
| CN101830621A (en) * | 2010-04-13 | 2010-09-15 | 广州珞珈环境技术有限公司 | Sewage and sludge drying and fueling treatment system and process |
| CN203545853U (en) * | 2013-09-06 | 2014-04-16 | 上海申耀环保工程有限公司 | Mixing and conveying equipment for sludge treatment |
| CN105417923A (en) * | 2015-12-16 | 2016-03-23 | 普利资环境科技（苏州）有限公司 | Sludge drying system |
| CN109764340A (en) * | 2018-12-17 | 2019-05-17 | 上海康恒环境股份有限公司 | A kind of method that semi-dry sludge cooperates with burning disposal with rubbish |
| CN109849218A (en) * | 2018-12-24 | 2019-06-07 | 青岛海诺中天科技股份有限公司 | Plastic foam particle overlay film drying machine agitating device |
| CN211871757U (en) * | 2019-12-25 | 2020-11-06 | 深圳市能源环保有限公司 | Half-dry sludge conveying system with matching device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114593853B (en) * | 2022-03-14 | 2024-04-09 | 苏州西热节能环保技术有限公司 | Online monitoring device for sludge drying system output, checking method thereof and storage medium |
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