CN109574464A - A kind of sludge drying method and drying equipment of sludge solid reinforcing compost combination heat pump moisture removal - Google Patents
A kind of sludge drying method and drying equipment of sludge solid reinforcing compost combination heat pump moisture removal Download PDFInfo
- Publication number
- CN109574464A CN109574464A CN201811501637.3A CN201811501637A CN109574464A CN 109574464 A CN109574464 A CN 109574464A CN 201811501637 A CN201811501637 A CN 201811501637A CN 109574464 A CN109574464 A CN 109574464A
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- China
- Prior art keywords
- sludge
- heat pump
- heat
- recyclegas
- solid
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Classifications
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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
- C02F11/16—Treatment of sludge; Devices therefor by de-watering, drying or thickening using drying or composting beds
-
- 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
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Abstract
The present invention relates to technical field of sludge treatment, the specifically a kind of sludge drying method and drying equipment of sludge solid reinforcing compost combination heat pump moisture removal, in recyclegas cyclic process, recyclegas passes through heat pump and obtains the first heat when being dried, the second heat is obtained when recyclegas is compressed by circulating fan, the recyclegas is by first heat and the second heat transfer to sludge and the third heat of sludge fermentation generation is combined to provide heat required for moisture evaporates jointly for sludge.The present invention is compared with the existing technology, composting technology and air heat pump are removed moisture technology to be combined, multi-disciplinary and industry, the application bottleneck for breaking through original compost and low temperature desiccation, heats sludge it is not necessary that heat source is specially arranged, and the fermentation energy that biology itself is utilized removes moisture removal, energy regenerating is carried out to the gas ejected simultaneously, by AI intelligent operation administrative skill, the model and algorithm for realizing setting are not depended on, realizes the intelligent operation of system.
Description
Technical field
The present invention relates to technical field of sludge treatment, specifically a kind of sludge solid reinforcing compost combination heat pump water removals
The sludge drying method and drying equipment divided.
Background technique
It is reported that the sewage treatment plant in China in process of construction, is all " the light mud of heavy water " all the time.At town sewage
Reason factory realizes the preliminary minimizing of sludge substantially, but the stabilization processes of sludge are not implemented.Sludge without stabilization processes
There are many harm, such as the secondary pollutions such as corruption, stink of organic matter, in addition, 40% ~ 50% COD can polluted-water in raw water
Environment, this meeting is so that emission reduction targets are had a greatly reduced quality.There are mainly three types of modes for country's Treatment of Sludge at present: deep dehydration fills, is good
Aerobe fermentation does compost use, anhydration and incineration.No matter which kind of technology application be provided to realize sludge minimizing, recycling,
These technologies can obtain promoting key is how to reduce operating cost.
Present applicant is in China's patent publication No.: a kind of sludge aerobic ventilation exposure is disclosed in CN105859080A
Gas drying equipment has many advantages, such as that occupied area is small, and Odor control is convenient, relatively 70% or less sludge of moisture content is suitble to pass through
Further spontaneous fermentation dehydration after granulation.But there are also the unrenewable disadvantage of waste gas residual heat, present patent application knots for the technology
Heat pump moisture removal technology is closed to optimize three-dimensional composting technology.
Summary of the invention
It is an object of the invention to solve the deficiencies in the prior art, a kind of sludge solid reinforcing compost combination heat pump is provided and is removed
The sludge drying method and drying equipment of moisture, it is intended to which the operating cost for further decreasing sludge composting realizes sludge treatment
Low cost operation solves the problems, such as that current Treatment of Sludge faces.
To achieve the goals above, a kind of sludge drying side of sludge solid reinforcing compost combination heat pump moisture removal is designed
Sludge is set in solid heap fertilizer bin by method, the drying method, by circulating fan by the bottom of solid heap fertilizer bin
Recyclegas is inputted to top-direction to solid heap fertilizer bin, itself sends out when taking away the moisture contained in sludge and sludge fermentation
The heat of heat will be sent into the cryogenic vaporizer section of heat pump by the recyclegas being discharged at the top of solid heap fertilizer bin, to circulating air
Body is dried, and the recyclegas after drying continues to run until the condenser section of heat pump, condenser section of the recyclegas in heat pump
After being heated up, then by circulating fan recyclegas is fed again into three-dimensional reinforcing compost feed bin.
In recyclegas cyclic process, recyclegas passes through heat pump and obtains the first heat, recyclegas when being dried
Obtain the second heat when being compressed by circulating fan, the recyclegas is by first heat and the second heat transfer to dirt
Mud and the third heat for combining sludge fermentation to generate provide moisture jointly for sludge and evaporate required heat.
Preferably, in recyclegas cyclic process, several sensors are set in solid heap fertilizer bin with temperature collection
And humidity, operating parameter is constantly adjusted by processor, in conjunction with dewatered sludge amount, goes water removal, residence time, entirety
Power consumption calculates the power consumption of removal ton water, then compares and find, the optimum value of each operating parameter of dynamic calibration.
Preferably, the operating parameter includes sludge temperature, ventilation quantity, heat pump power, mud handling capacity.
Preferably, it is granulated by 70% sludge crushing of moisture content and by Granulation Equipments, so that the granularity of sludge is 0-
30mm pours into the sludge smashed from solid heap fertilizer bin top feed mouth, make its it is loose pile up in feed bin, and be layered stacking
In each layer grid being from top to bottom uniformly provided in solid heap fertilizer bin.
The present invention also designs a kind of doing for sludge drying method for sludge solid reinforcing compost combination heat pump moisture removal
Change equipment, the drying equipment includes a solid heap fertilizer bin, is set between the top and bottom of the solid heap fertilizer bin
There is the circulation air flue being located at outside solid heap fertilizer bin, is successively arranged heat pump and circulating fan between the circulation air flue.
Preferably, several layers grid is from top to bottom equipped in the solid heap fertilizer bin, between adjacent two layers grid
Spacing is equal.
Preferably, it is equipped with feed inlet at the top of the solid heap fertilizer bin, and bottom is equipped with discharge port.
Preferably, the side wall surface of the three-dimensional composting is equipped with observation window and temp probe.
The present invention compared with the existing technology, by composting technology and air heat pump except moisture technology is combined, it is multi-disciplinary and
Industry, cross discipline break through the application bottleneck of original compost and low temperature desiccation, the advantage is that:
1, sludge is heated it is not necessary that heat source is specially arranged, the fermentation energy that biology itself is utilized removes moisture removal, while right
The gas ejected carries out energy regenerating, energy consumption is further saved, compared to traditional zymotechnique and heat pump low temperature drying process
It is intended to energy conservation, the power consumption for evaporating water per ton can be reduced between 100-200 degree.
2, it completely encloses, there is no foul smell outlet, environmental-friendly, traditional compost needs largely to divulge information, and has a large amount of
Foul smell discharge, environment are very unfriendly.
3, moisture percentage in sewage sludge can be reduced to 20% or so.
4, common compost technology is compared, occupied area is small, and 3, whole system is totally-enclosed, circulation inside foul smell, without foul smell
Outlet, and low energy consumption.
5, conventional heat pump low temperature drying technique is compared, energy consumption further decreases.
6, for sludge drying temperature between 55-65 degree, VOC yield is few.
7, three-dimensional composting technology is used, ventilation quantity is few, and whole investment is reasonable.
8, using our company original technology, in conjunction with air dewetting technology, technical maturity is reliable, stable；In addition we open
Newest AI intelligent operation administrative skill has been sent out, the model and algorithm for realizing setting are not depended on, has passed through sludge reaction temperature dynamic
Ventilation quantity and heat pump energy output are controlled, the intelligent operation of system is realized.
9, the municipal sludge low for content of beary metal, product can be used for land use, high for content of beary metal
Biological auxiliary fuel can be done.
10, it is very suitable for the sludge drying and recycling treatment of the sewage treatment plant of dispersion.
Detailed description of the invention
Fig. 1 is the sludge drying side that the present invention is used for sludge solid reinforcing compost combination heat pump moisture removal in an embodiment
The structural schematic diagram of the drying equipment of method.
In figure: 1, solid heap fertilizer bin 2, evaporator 3, heat pump 4, compressor 5, expansion valve 6, condenser 7, circulation
Blower.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings, and the structure and principle of this device are for the people of this profession
It is very clearly.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this
Invention.
Referring to Fig. 1, in the present embodiment, the drying equipment includes a solid heap fertilizer bin, the solid heap
The circulation air flue being located at outside solid heap fertilizer bin is equipped between the top and bottom of fertilizer bin, between the circulation air flue successively
Equipped with heat pump and circulating fan.Heat pump includes evaporator section and condenser section, passes through expansion between evaporator section and condenser section
Valve is connected with compressor to collectively form the heat pump.
In one preferred embodiment, the solid heap fertilizer bin include frame, feed bin, discharge valve, observation window,
Temp probe and several grids, the frame are made of the high foot support frame of top feed bin fixed frame and bottom, the feed bin peace
In the top feed bin fixed frame of frame, several layers grid is respectively via feed bin side equidistant horizontal horizontal insertion feed bin up and down
Interior, the sludge smashed is poured into from feed bin top feed mouth, and layering is stacked in each layer grid, and discharge valve is installed in the bottom of feed bin,
And it is equipped with air inlet pipe simultaneously, air inlet pipe 7 is connect with air blower, and the air of high temperature and pressure is sent into feed bin by air blower, and air is logical
The gap crossed between sludge moves from bottom to top, is respectively equipped with observation window and temp probe in the side wall surface of feed bin.Each layer
Grid is by several horizontal cross grille strips and several horizontal uniform staggereds of longitudinal grid item.The temp probe, measurement
Temperature in feed bin, signal output end are connected with remote control apparatus, and the signal output end of remote control apparatus controls connection
Discharge valve opening and closing, temp probe can measure the temperature in feed bin, and by temperature control between 55 ° -70 °, it is aerobic to be conducive to bacterium
Digestion, when Treatment of Sludge reaches after a certain period of time, i.e., the time required to moisture content reaches specified value 30%-40%, discharge valve is opened, will
Dewatered sludge is discharged in feed bin.Totally-enclosed in the feed bin operational process, tail gas can be collected via tail gas collecting device, by removing
Dirt, deodorizing device processing.The staircase contour with high foot support frame is equipped with by the side of the top feed bin fixed frame where feed bin.
In use, by electrodialysis frame dehydration machine or other dehydration and drying technologies, moisture percentage in sewage sludge is dropped to early period
Sludge is granulated after 70% or less, is granulated by 70% sludge crushing of moisture content, by Granulation Equipments, granularity 0-30mm is beaten
Broken sludge is poured into from feed bin top feed mouth, make its it is loose pile up in feed bin, and be layered and be stacked in each layer grid.For
Into the higher project of mud moisture content, can be granulated by material back-mixing, do not need Traditional compost add like that mushroom soil, stalk,
The auxiliary materials such as sawdust.Sludge stops 2-3 days between 55-65 DEG C, carries out aerobic fermentation, organic matter degradation, the gas that moisture is passed into
Body is constantly taken away, and sludge realizes minimizing and stabilization processes.
Under this treatment process, sludge ventilating amount is controlled within zone of reasonableness, it is ensured that and sludge is in aerobic state, according to
Temperature and carrying aqueous vapor amount adjust air quantity.Sludge fermentation self-heating simultaneously during this, the moisture contained in sludge can evaporate
Out, it in order to guarantee that the air in compost feed bin does not form the vapor of saturation, needs for air to be discharged.Due to sludge from
It generates heat, the air in compositing system can take away a part of heat in discharge, in order to use this partial heat, reduce energy
Amount consumption, reduces operating cost, increases device in this compositing system, the humid air of discharge is guided to enter the low-temperature evaporation of heat pump
Device end forms oversaturated air, and the water vapour in air can condense into droplet at this time, and moisture is moved out, cold after drying
Air continues to run until the condenser section of heat pump, and after being heated up, circulating fan is fed again into three-dimensional reinforcing compost feed bin, again
It inputs heat and takes away the moisture in sludge, move in circles.Foul smell in system, periodically discharge carries out gas treatment.
This system core composition is sludge solid in-vessel composting system and ventilating system and heat-pump dehumidification system.Mud granule is good
Under oxygen environment, aerobic bacteria meeting mass propagation that high temperature is thermophilic, degradation of organic substances completes the process of compost, while discharging a large amount of heat
Amount.Thicker additionally, due to mud layer, circulating fan pressure is higher, and air is being that compressed temperature in the process can increase by blower
It tens degree, so also can be toward conveying heat inside sludge.It also can reversely be conveyed to dry air during heat-pump dehumidification gas
Heat.This three parts heat solely belongs to the cheap heat of green, together provides moisture in sludge and evaporates required heat.It is real
The core function for having showed this set system, under extremely low operating cost, desiccation and recycling sludge are provided with powerful market
Competitiveness.
In addition artificial intelligence is being combined using the temperature and humidity of sensor acquisition key node in the whole process, it is real
The AIization of existing system operation, is not necessarily to manual intervention.It allows system by big data, establishes the desiccation ability of low operating cost.Sludge
The temperature of compost desiccation operation is between 50-70 degree, and with the variation in season, the operating parameter of dehumidifying and ventilation circulation system is
Dynamic change, AI system passes through the continuous fine tuning of parameter, in conjunction with dewatered sludge amount, removes water removal, residence time, whole electricity
Consumption calculates removal ton water power consumption, then compares and find, each optimal parameter of dynamic calibration (such as sludge temperature, ventilation
Amount, the power of dehumidifier, mud handling capacity etc.).It first ensures that the daily stabilization for going water removal, then passes through temperature and ventilation
The control of amount realizes input energy and evaporates the balance of water yield.
AI system used by the application method does not depend on changeless model, more passes through big data and self-teaching
Realize optimum operation.Processor does not depend on the model and algorithm being previously set, but according to objective environment, such as temperature and humidity
Variation, in conjunction with sensor acquire data, the power of heat pump and blower is dynamically adjusted, to reach under present case
Optimal power simultaneously realizes optimal sludge drying effect.
This method is particularly suitable for the Treatment of Sludge of the sewage plant of middle and small scale ability.This kind of sewage plant position is more remote,
Management and the operation talent are deficient, concentrate the high expensive of drying and other treatment, this just needs a kind of investment suitable, and operation is simple and stablizes
Sludge drying and recycling technology.The technology has investment suitable, and operation is simple and reliable, and product can be with resource utilization etc.
Advantage.The phenomenon that alleviating sludge besieged city significantly.The patent of invention has stronger promotional value and vitality.
Claims (8)
1. a kind of sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal, the drying method set sludge
It is placed in solid heap fertilizer bin, it is characterised in that by circulating fan from the bottom of solid heap fertilizer bin to top-direction to solid
Compost feed bin inputs recyclegas, and the heat of self-heating when taking away the moisture contained in sludge and sludge fermentation will be by standing
The recyclegas of body composting the top of the warehouse discharge is sent into the cryogenic vaporizer section of heat pump, dry recyclegas to be dried
Recyclegas afterwards continues to run until the condenser section of heat pump, recyclegas after the condenser section of heat pump is heated up, then by
Recyclegas is fed again into three-dimensional reinforcing compost feed bin by circulating fan；
In recyclegas cyclic process, recyclegas passes through heat pump and obtains the first heat when being dried, and recyclegas is followed
Ring blower obtains the second heat when compressing, the recyclegas by first heat and the second heat transfer to sludge simultaneously
The third heat generated in conjunction with sludge fermentation provides heat required for moisture evaporation jointly for sludge.
2. a kind of sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal as described in claim 1, special
Sign is in recyclegas cyclic process, several sensors is arranged in solid heap fertilizer bin with temperature collection and humidity, leads to
It crosses processor and operating parameter is constantly adjusted, in conjunction with dewatered sludge amount, remove water removal, residence time, whole power consumption, calculate
It goes out then to compare and find except the power consumption of ton water, the optimum value of each operating parameter of dynamic calibration.
3. a kind of sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal as claimed in claim 2, special
Sign is that the operating parameter includes sludge temperature, ventilation quantity, heat pump power, mud handling capacity.
4. a kind of sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal as described in claim 1, special
Sign is to be granulated by 70% sludge crushing of moisture content and by Granulation Equipments, so that the granularity of sludge is 0-30mm, will smash
Sludge poured into from solid heap fertilizer bin top feed mouth, make its it is loose pile up in feed bin, and be layered and be stacked at three-dimensional compost
In each layer grid being from top to bottom uniformly provided in feed bin.
5. a kind of sludge drying for the sludge solid reinforcing compost combination heat pump moisture removal as described in claim 1-4 is any
The drying equipment of method, it is characterised in that the drying equipment includes a solid heap fertilizer bin, the solid heap fertilizer bin
Top and bottom between be equipped with the circulation air flue being located at outside solid heap fertilizer bin, be successively arranged heat between the circulation air flue
Pump and circulating fan.
6. the desiccation for the sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal as claimed in claim 5
Equipment, it is characterised in that several layers grid is from top to bottom equipped in the solid heap fertilizer bin, between adjacent two layers grid
Spacing is equal.
7. the desiccation for the sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal as claimed in claim 5
Equipment, it is characterised in that feed inlet is equipped at the top of the solid heap fertilizer bin, and bottom is equipped with discharge port.
8. the desiccation for the sludge drying method of sludge solid reinforcing compost combination heat pump moisture removal as claimed in claim 5
Equipment, it is characterised in that the side wall surface of the three-dimensional composting is equipped with observation window and temp probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501637.3A CN109574464A (en) | 2018-12-10 | 2018-12-10 | A kind of sludge drying method and drying equipment of sludge solid reinforcing compost combination heat pump moisture removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501637.3A CN109574464A (en) | 2018-12-10 | 2018-12-10 | A kind of sludge drying method and drying equipment of sludge solid reinforcing compost combination heat pump moisture removal |
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| Publication Number | Publication Date |
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| CN109574464A true CN109574464A (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811501637.3A Pending CN109574464A (en) | 2018-12-10 | 2018-12-10 | A kind of sludge drying method and drying equipment of sludge solid reinforcing compost combination heat pump moisture removal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021253659A1 (en) * | 2020-06-17 | 2021-12-23 | 石文政 | Solar sludge drying and sludge composting combined treatment method and device |
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| CN108059316A (en) * | 2018-01-11 | 2018-05-22 | 广州易科热泵烘干设备科技有限公司 | Sludge at low temperature desiccation automatic assembly line |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100163396A1 (en) * | 2008-12-23 | 2010-07-01 | Estech, Llc | Waste processing apparatus and method featuring power generation, water recycling and water use in steam generation |
| CN204474516U (en) * | 2014-12-29 | 2015-07-15 | 东莞市东元新能源科技有限公司 | A kind of sludge drying system |
| CN105859080A (en) * | 2016-04-26 | 2016-08-17 | 上海仁创环境科技有限公司 | Aerobiotic ventilated aeration drying equipment for sludge and aeration drying method thereof |
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| WO2021253659A1 (en) * | 2020-06-17 | 2021-12-23 | 石文政 | Solar sludge drying and sludge composting combined treatment method and device |
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