CN109141066B - Tail gas purification and heat recovery system and method for sludge treatment - Google Patents
Tail gas purification and heat recovery system and method for sludge treatment Download PDFInfo
- Publication number
- CN109141066B CN109141066B CN201710452211.2A CN201710452211A CN109141066B CN 109141066 B CN109141066 B CN 109141066B CN 201710452211 A CN201710452211 A CN 201710452211A CN 109141066 B CN109141066 B CN 109141066B
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- heat
- heat exchanger
- gas
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000011084 recovery Methods 0.000 title claims abstract description 48
- 238000000746 purification Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 159
- 238000012546 transfer Methods 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims description 42
- 238000011144 upstream manufacturing Methods 0.000 claims description 18
- 238000009826 distribution Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 204
- 239000012535 impurity Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 229910001872 inorganic gas Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001599 direct drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a tail gas purification and heat recovery system and method for sludge treatment. The system comprises: a first heat exchange flow path including a first heat exchanger in which a first heat exchange medium circulates to heat a process gas for sludge treatment in the first heat exchanger, and a second heat exchanger and a third heat exchanger disposed downstream of the first heat exchanger; and a second purifying and heat exchanging flow path including a heat exchanging tank containing a second liquid heat exchanging medium, the tail gas after sludge treatment being discharged into the heat exchanging tank, being washed by the second liquid heat exchanging medium in the heat exchanging tank and transferring heat to the second liquid heat exchanging medium to be cooled, the second heat exchanger being in heat exchanging relation with the second liquid heat exchanging medium in the heat exchanging tank to transfer heat of the second liquid heat exchanging medium to the first heat exchanging medium in the second heat exchanger. The tail gas of the heat exchange box flows through the third heat exchanger for heat exchange with the first heat exchange medium flowing through the third heat exchanger.
Description
Technical Field
The present invention relates to a system and method for purifying and recovering exhaust gas for sludge treatment, and more particularly, to a system and method for purifying and recovering exhaust gas for sludge treatment.
Background
With the continuous development of urban treatment, the amount of sewage generated in industrial production and life to be treated is gradually increased, and the output of sludge, which is a byproduct after sewage treatment, is also increased. But the treatment of sludge is more difficult than for sewage. At present, sludge drying treatment is a relatively effective sludge treatment method. The better drying treatment usually adopts direct drying, and the dried drying medium is recycled.
Chinese patent CN201010101024.8 discloses a latent heat exchange type multiphase sludge drying method and apparatus. The equipment mainly comprises the steps of feeding dewatered sludge into a desiccator, and then introducing steam to desiccate the sludge. The sludge is heated fully and the moisture in the sludge is evaporated by continuous stirring, so that the drying purpose is achieved. And recovering the steam after sludge drying by using a latent heat pump, generating low-temperature water steam by using heat energy in the steam through a steam generating device to serve as a supplementary drying heat source, drying the sludge, and discharging tail gas filtered by using a biological filter into the atmosphere in a harmless manner. The device and the method adopted in the patent document can carry out drying treatment on sludge through low-temperature water vapor, carry out heat exchange on vapor heat in generated tail gas through a latent heat exchange pump, and take the recovered heat as a heat source for drying the sludge, thereby realizing thermal circulation.
The sludge heat drying process can release a large amount of waste gas, has complex and various components, is a mixture of various organic and inorganic gases, can cause serious secondary pollution to the surrounding environment if being directly discharged, has serious harm to the human living environment and causes heat loss.
Therefore, there are some tail gas treatment modes, such as a biological filtration method, a tail gas absorption tower, a dust remover, etc., but it is difficult to realize effective tail gas treatment and heat recovery, etc., many dried tail gases are discharged after being treated, and the heat carried by the tail gases is not recovered and reused, so as to increase the drying energy consumption cost. Even if there is equipment for heat recovery treatment, the efficiency of heat recovery is often low, and the sludge impurities contained in the tail gas can block the heat recovery equipment to cause corrosion.
The device of the above patent or the device of the prior art can realize the heat recovery and reutilization of the tail gas after the sludge is dried by heat exchange, but in the sludge drying process, the device is blocked by the sludge impurities carried in the tail gas, so that the heat recovery efficiency is affected.
There is therefore a need for systems and methods that can effectively perform tail gas purification and heat recovery during sludge drying.
Disclosure of Invention
In order to solve the problems, the invention provides a tail gas purifying and heat recovering system and method for sludge treatment.
According to one aspect of the present invention, there is provided an exhaust gas purification and heat recovery system for sludge treatment, comprising:
A first heat exchange flow path including a first heat exchanger in which a first heat exchange medium circulates to heat a process gas for sludge treatment in the first heat exchanger, and a second heat exchanger and a third heat exchanger arranged downstream of the first heat exchanger;
a second purification and heat exchange flow path comprising a heat exchange tank containing a second liquid heat exchange medium, the sludge treated tail gas being discharged into the heat exchange tank, cleaned by the second liquid heat exchange medium in the heat exchange tank and transferring heat to the second liquid heat exchange medium to be cooled, the second heat exchanger being in heat exchange relationship with the second liquid heat exchange medium in the heat exchange tank to transfer heat from the second liquid heat exchange medium to the first heat exchange medium in the second heat exchanger; and
The tail gas of the heat exchange box flows through the third heat exchanger and is used for exchanging heat with the first heat exchange medium flowing through the third heat exchanger.
Preferably, the exhaust gas purifying and heat recovering system further comprises a gas collecting device disposed above the heat exchange tank for collecting exhaust gas from the heat exchange tank;
Preferably, the first heat exchange flow path includes a compressor arranged upstream of the first heat exchanger for compressing the first heat exchange medium and guiding the compressed first heat exchange medium to the first heat exchanger, and a throttle valve arranged downstream of the first heat exchanger and upstream of the second heat exchanger, the first heat exchange medium heating the process gas in the first heat exchanger and then flowing into the second heat exchanger via the throttle valve.
Preferably, the gas distribution device is arranged on the upstream of the gas inlet pipeline of the heat exchange box, so that the tail gas after sludge treatment can uniformly enter the heat exchange box.
Preferably, the heat exchange tank includes a clear liquid inlet and a waste liquid outlet provided near the bottom of the heat exchange tank, and a turbid liquid outlet provided at the upper portion of the heat exchange tank; when the replenishing is needed, introducing a second liquid heat exchange medium into the heat exchange box from the clear liquid inlet; when the liquid level in the heat exchange box reaches the turbid liquid outlet, the second liquid heat exchange medium flows out from the turbid liquid outlet; when the heat exchange tank needs to be cleaned, the second liquid heat exchange medium is discharged from the waste liquid outlet.
Preferably, the exhaust gas purifying and heat recovering system further comprises a third compressed gas flow path including a compressed gas inlet provided near the bottom of the heat exchange tank, a control valve configured to introduce compressed gas into the gas pipe via the compressed gas inlet when necessary, and to spray into the second liquid heat exchange medium of the heat exchange tank through a plurality of small holes provided on the gas pipe, and then to be discharged together with the exhaust gas.
Preferably, the second heat exchanger is arranged in series upstream or downstream of the third heat exchanger.
Preferably, the second heat exchanger is arranged in parallel with the third heat exchanger.
Preferably, the second liquid heat exchange medium is one or more of water, a cleaning liquid and an ionic liquid.
Preferably, the second heat exchanger is placed inside the heat exchange tank, and the tail gas is discharged into the heat exchange tank below the liquid level in the heat exchange tank.
Preferably, the process gas is air.
Preferably, the treatment gas is fed from the first heat exchanger to a sludge drying device by a ventilation device.
According to an aspect of the present invention, there is provided a method for purifying exhaust gas and recovering heat for sludge treatment, comprising:
Providing a first heat exchange flow path constituted by a heat exchange circuit including a first heat exchanger, and a second heat exchanger and a third heat exchanger arranged downstream of the first heat exchanger, a first heat exchange medium circulating in the first heat exchange flow path to heat a process gas for sludge treatment in the first heat exchanger; and
Providing a second purification and heat exchange flow path comprising a heat exchange tank containing a second liquid heat exchange medium, into which the sludge treated tail gas is discharged, cleaned by the second liquid heat exchange medium in the heat exchange tank and heat is transferred to the second liquid heat exchange medium to be cooled, the second heat exchanger being in heat exchange relationship with the second liquid heat exchange medium in the heat exchange tank to transfer heat of the second liquid heat exchange medium to the first heat exchange medium in the second heat exchanger;
Filling the heat exchange tank with the second liquid heat exchange medium;
Activating the first heat exchange flow path and the second purification and heat exchange flow path so that process gas is heated in the first heat exchanger and then fed to a sludge drying device, and tail gas discharged from the sludge drying device is input into the heat exchange box so that the tail gas is washed by the second liquid heat exchange medium and heat is transferred to the second liquid heat exchange medium to be cooled; and
And enabling the tail gas of the heat exchange box to flow through the third heat exchanger for heat exchange with the first heat exchange medium flowing through the third heat exchanger.
Preferably, the method further comprises:
Providing a gas collecting device, wherein the gas collecting device is arranged above the heat exchange box and is used for collecting tail gas from the heat exchange box; and
The exhaust gas of the heat exchange tank is collected by the gas collecting device before the exhaust gas of the heat exchange tank flows through the third heat exchanger.
Preferably, the first heat exchange flow path includes a compressor arranged upstream of the first heat exchanger for compressing the first heat exchange medium and guiding the compressed first heat exchange medium to the first heat exchanger, and a throttle valve arranged downstream of the first heat exchanger and upstream of the second heat exchanger, the first heat exchange medium heating the process gas in the first heat exchanger and then flowing into the second heat exchanger via the throttle valve.
Preferably, the method further comprises: the gas distribution device is arranged on the upstream of the gas inlet pipeline of the heat exchange box and is used for enabling the tail gas to uniformly enter the heat exchange box.
Preferably, the method further comprises: a third compressed gas flow path is provided, which includes a compressed gas inlet provided near the bottom of the heat exchange tank and a gas pipe provided near the bottom of the heat exchange tank, through which compressed gas enters the gas pipe, and is injected into the second liquid heat exchange medium of the heat exchange tank through a plurality of small holes provided in the gas pipe, and is then discharged together with the off-gas.
Preferably, the second heat exchanger is arranged in series upstream or downstream of the third heat exchanger.
Preferably, the second heat exchanger is arranged in parallel with the third heat exchanger.
The invention provides a tail gas purification and heat recovery system and method for sludge treatment. The first heat exchanger heats air, and the heated air is pressurized by the ventilation device and then sent to the sludge drying device. In the sludge drying device, the heated air is used as a treatment gas to participate in the sludge drying treatment. The heated air is discharged from the sludge drying device after being changed into tail gas with sludge impurities, and flows into the gas distribution device through a pipeline. The tail gas is collected in the gas distribution device and is discharged into the second liquid heat exchange medium in the heat exchange box through the air inlet pipeline, so that heat in the tail gas is transferred to the second liquid heat exchange medium, gas-liquid heat exchange is realized, and heat recovery of the heat in the tail gas is realized. During this heat exchange the temperature of the tail gas is reduced and automatically flows upwards above the liquid level of the second liquid heat exchange medium and is then collected by the gas collecting means. The collected tail gas is input into a third heat exchanger to exchange heat with the first heat exchange medium in the third heat exchanger, and the purified and cooled tail gas is then discharged into the environment or other treatment devices.
At the same time, the compressor compresses the first heat exchange medium and discharges the compressed first heat exchange medium into the first heat exchanger. In the first heat exchanger, the first heat exchange medium releases heat to the air flowing through the first heat exchanger to effect heat exchange between the first heat exchange medium and the air. The condensed first heat exchange medium then passes through a throttle valve to the second heat exchanger and/or the third heat exchanger. As indicated above, the second liquid heat exchange medium in the heat exchange tank absorbs heat from the exhaust gas, causing its temperature to rise. Therefore, the first heat exchange medium can absorb the heat in the second liquid heat exchange medium in the second heat exchanger to evaporate, and the heat exchange between the first heat exchange medium and the second heat exchange medium is realized, so that the temperature of the second liquid heat exchange medium is reduced. The second liquid heat exchange medium in the heat exchange tank is thus able to continue to absorb heat of the exhaust gases discharged therein. The tail gas heat is converted into the second liquid heat exchange medium, and then the second liquid heat exchange medium transfers the heat energy to the second heat exchanger, so that the multi-phase heat energy conversion is realized, and the heat energy transfer efficiency is greatly improved; through the heat energy conversion of tail gas, the second liquid heat exchange medium and the first heat exchange medium, heat can be fully recovered, heat loss is reduced, and therefore energy consumption is reduced. From the above flow, the invention has smart flow, can quickly and effectively realize heat recovery by a unique heat exchange mode, and ensures that the heating energy efficiency ratio COP reaches 3.0-8.0, thereby improving the drying speed and having good sludge drying effect. In addition, the invention uses the second liquid heat exchange medium to clean the waste gas, so that the sludge impurities in the tail gas are effectively washed, the service life of equipment is better ensured, the tail gas is prevented from blocking or corroding the equipment in the heat exchange process, and the heat recovery efficiency of the tail gas is improved.
The invention has one or more of the following technical effects:
(1) The tail gas firstly passes through the gas distribution device and then enters the second liquid heat exchange medium of the heat exchange box through the air inlet pipeline for cleaning, and meanwhile, the second liquid heat exchange medium absorbs heat energy in the tail gas to realize heat efficiency conversion, so that equipment can be prevented from being blocked and corroded in the heat exchange process of the sludge tail gas, and the heat recovery efficiency of the tail gas is improved.
(2) The energy-saving effect is good, and the efficient heat recovery is realized and the sludge drying efficiency is improved through the tail gas purification treatment system.
(3) In order to ensure more sufficient heat exchange, the invention is additionally provided with the third heat exchanger, so that the tail gas after the heat conversion of the gas and the liquid is subjected to heat conversion with the first heat exchange medium of the third heat exchanger again, and the heat recovery efficiency is improved.
(4) The tail gas heat is converted into the second liquid heat exchange medium, and then the second liquid heat exchange medium transfers the heat energy to the second heat exchanger, so that the multi-phase heat energy conversion is realized, and the heat energy transfer efficiency is greatly improved; through the heat energy conversion of tail gas, the second liquid heat exchange medium and the first heat exchange medium, heat can be fully recovered, heat loss is reduced, and therefore energy consumption is reduced.
(5) The process is simple, the drying effect is good, the heat recovery can be realized rapidly and effectively, and the effect and the speed are improved.
(6) The tail gas entering the second purifying and heat exchanging flow path is treated and heat recovered in a closed environment, so that odor is prevented from being generated, secondary pollution is avoided, and the method is very environment-friendly.
Other exemplary embodiments of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while disclosing exemplary embodiments of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Drawings
At least one embodiment will hereinafter be described in conjunction with the following drawing figures, wherein like numerals denote like elements.
Fig. 1 is a schematic view of a preferred embodiment of an exhaust gas purification and heat recovery system according to the present invention.
Fig. 2 is a schematic view of another preferred embodiment of an exhaust gas purification and heat recovery system according to the present invention.
Fig. 3 is a schematic view of yet another preferred embodiment of an exhaust gas purification and heat recovery system according to the present invention.
Reference numerals:
1. sludge drying device
2. First heat exchange flow path
3. Second purifying and heat exchanging flow path
4. Ventilating device
5. Air inlet
6. Gas collecting device
21. Compressor with a compressor body having a rotor with a rotor shaft
22. First heat exchanger
23. Throttle valve
24. Second heat exchanger
25. Third heat exchanger
31. Heat exchange box
311. Clear liquid inlet
312. Control valve
313. Waste liquid outlet
314. Control valve
315. Turbid liquid outlet
316. Compressed gas inlet
317. Air pipe
318. Control valve
32. Gas distribution device
321. Air inlet pipeline
322. Air outlet
323. A second liquid heat exchange medium.
Detailed Description
The following description is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. Referring to the drawings, FIG. 1 is a schematic view of a preferred embodiment of an exhaust gas purification and heat recovery system according to the present invention. Fig. 2 is a schematic view of another preferred embodiment of an exhaust gas purification and heat recovery system according to the present invention. Fig. 3 is a schematic view of yet another preferred embodiment of an exhaust gas purification and heat recovery system according to the present invention.
As shown in fig. 1, the exhaust gas purifying and heat recovering system according to the present invention includes a first heat exchanging flow path 2, the first heat exchanging flow path 2 being constituted by a heat exchanging circuit including a compressor 21, a first heat exchanger 22, a throttle valve 23, and a second heat exchanger 23 arranged in series downstream of the first heat exchanger 22, a first heat exchanging medium circulating in the first heat exchanging flow path 2 to heat a process gas for sludge treatment in the first heat exchanger 22. The first heat exchange flow path 2 further includes a third heat exchanger 25.
As shown in fig. 1, the second heat exchanger 24 is arranged in series downstream of the third heat exchanger 25. However, the second heat exchanger 24 may also be arranged in series upstream of the third heat exchanger 25, as shown in fig. 2. Furthermore, the second heat exchanger 24 may also be arranged in parallel with the third heat exchanger 25, as shown in fig. 3.
A first heat exchange medium circulates in the heat exchange circuit. The compressor 21 compresses the first heat exchange medium in a gaseous state, and discharges the compressed high-temperature and high-pressure first heat exchange medium to the first heat exchanger 22. The first heat exchange medium is condensed in the first heat exchanger 22 by the process gas (e.g., air from the outside) flowing through the first heat exchanger 22, and becomes liquid, and the process gas is thereby heated.
According to one embodiment of the invention, the first heat exchanger 22 corresponds to a condenser. The condensed first heat exchange medium passes through the throttle valve 23 and enters the second heat exchanger 24 and/or the third heat exchanger 25 in a liquid form at a low temperature and a low pressure. In the second heat exchanger 24 and/or the third heat exchanger 25, the first heat exchange medium absorbs heat from the second purification and heat exchange flow path 3 to evaporate. Thus, the second heat exchanger 24 and/or the third heat exchanger 25 correspond to an evaporator. The evaporated first heat exchange medium is sucked by the compressor 21 for a new compression cycle. The first heat exchange medium may be, for example, R134a, R407c, R410a, etc. It will be appreciated by those skilled in the art that the first heat exchanger 22, the second heat exchanger 24 and the third heat exchanger 25 may be any other suitable type of heat exchanger without departing from the scope of the present invention.
According to a preferred embodiment of the present invention, the process gas flows through the compressor 21 before flowing through the first heat exchanger 22, helping to cool the compressor 21 and thus being preheated, thereby improving the heat recovery efficiency.
In one embodiment of the invention, a sludge treatment device is provided downstream of the first heat exchanger 22 for treating sludge and discharging tail gas. The sludge heat drying process can release a large amount of waste gas, the components of the sludge heat drying process are complex and various, the sludge heat drying process is a mixture of various organic and inorganic gases, if the sludge heat drying process is directly discharged, serious secondary pollution is caused to the surrounding environment, the harm to the human living environment is serious, and the waste heat is caused in tail gas, so that the heat loss is caused by the direct discharge. In one embodiment of the invention, the sludge treatment plant is shown as a sludge drying plant 1. It will be appreciated by those skilled in the art that the sludge treatment apparatus may be any other suitable type of sludge treatment apparatus without departing from the scope of the present invention.
The exhaust gas purification and heat recovery system according to the present invention further comprises a second purification and heat exchange flow path 3, said second purification and heat exchange flow path 3 comprising a heat exchange tank 31 containing a second liquid heat exchange medium 323. The sludge-treated tail gas is discharged into the heat exchange tank 31, washed by the second liquid heat exchange medium 323 in the heat exchange tank 31 and transfers heat to the second liquid heat exchange medium 323 to be cooled. The second heat exchanger 24 is disposed within the heat exchange tank 31, the second heat exchanger 24 being in heat exchange relationship with the second liquid heat exchange medium in the heat exchange tank 31 such that heat from the second liquid heat exchange medium 323 is transferred to the first heat exchange medium in the second heat exchanger 24. In the heat exchange tank 31, the tail gas not only directly exchanges heat with the second liquid heat exchange medium, but also directly exchanges heat with the second heat exchanger 24, and transfers heat to the first heat exchange medium; therefore, through the heat energy conversion of the tail gas, the second liquid heat exchange medium and the first heat exchange medium, the heat in the tail gas can be fully recovered, and the heat loss is reduced, so that the energy consumption is reduced. Of course, a plurality of second heat exchangers 24 may be disposed inside the heat exchange tank 31 as needed, and the plurality of second heat exchangers 24 may be arranged in series or parallel, thereby improving the efficiency of heat transfer from the second liquid heat exchange medium 323 to the first heat exchange medium. The tail gas entering the second purifying and heat exchanging flow path 3 is treated and heat recovered in a closed environment, so that odor is prevented from being generated, secondary pollution is avoided, and the method is very environment-friendly.
In one embodiment of the invention, the second liquid heat exchange medium is water. The second liquid heat exchange medium is not limited to water and other suitable liquids may be used, such as cleaning liquids, ionic liquids, and the like.
The tail gas is cleaned in the heat exchange box 31 and transfers heat to the second liquid heat exchange medium, thus being cooled. Thus realizing purification of tail gas and recovery of heat. After the temperature of the tail gas is reduced, the tail gas automatically rises to be above the liquid level of the second liquid heat exchange medium in the second liquid heat exchange medium, and then is collected by the gas collecting device 6.
The second liquid heat exchange medium, which obtains heat from the tail gas, transfers heat via the second heat exchanger 24 to the first heat exchange medium flowing in the second heat exchanger 24 to evaporate the first heat exchange medium.
The exhaust gas purification and heat recovery system according to the present invention further comprises a gas collecting device 6, said gas collecting device 6 being arranged above said heat exchange tank 31 for collecting the exhaust gas from said heat exchange tank 31 that has undergone heat exchange and washing. The tail gas transfers heat to the second liquid heat exchange medium in the heat exchange tank 31 to be cooled. Thereby achieving heat recovery. After the temperature of the tail gas is reduced, the tail gas automatically rises to be above the liquid level of the second liquid heat exchange medium in the second liquid heat exchange medium, and then is collected by the gas collecting device 6. The tail gas collected by the gas collecting device 6, which has undergone heat exchange and cleaning, flows through the third heat exchanger 25 for heat exchange with the first heat exchange medium flowing through the third heat exchanger 25. Of course, a plurality of third heat exchangers 25 may be disposed above the heat exchange box 31 as needed, and the plurality of third heat exchangers 25 may be arranged in series or in parallel, and the tail gas collected by the gas collecting device 6, which has undergone heat exchange and washing, flows through heat exchange with the first heat exchange medium of the plurality of heat exchangers, thereby improving the efficiency of heat exchange.
The first heat exchange medium flowing through the second heat exchanger 24 and/or the third heat exchanger 25 is warmed and vaporized sufficiently and directed back to the first heat exchanger 22 to repeat the cycle.
According to a preferred embodiment of the present invention, a gas distribution means 32 is provided upstream of the inlet line 321 of the heat exchange tank 31 for enabling uniform entry of the exhaust gases into the heat exchange tank 31. The gas distribution device 32 is in gas communication with the heat exchange box 31 and the sludge drying device 1, respectively, via pipes. In particular, the inlet line 321 connecting the gas distribution device 32 and the heat exchange tank 31 is inserted below the level of the second liquid heat exchange medium in the heat exchange tank 31, the inlet line 321 being inserted to a depth sufficient to ensure adequate heat exchange between the gas and the liquid. According to the invention, the tail gas firstly passes through the gas distribution device 32 and then enters the second liquid heat exchange medium of the heat exchange box 31 through the gas inlet pipeline 321 for cleaning, and meanwhile, the second liquid heat exchange medium absorbs the heat energy in the tail gas to realize heat efficiency conversion, thereby preventing equipment from being blocked and corroded in the heat exchange process of the sludge tail gas and improving the heat recovery efficiency of the tail gas.
According to a preferred embodiment of the present invention, the heat exchange tank 31 includes a clear liquid inlet 311 and a waste liquid outlet 313 provided near the bottom of the heat exchange tank 31, and a turbid liquid outlet 315 provided at the upper portion of the heat exchange tank 311.
The heat exchanger tank 31 further includes a control valve 312 and a control valve 314. Since the exhaust gas contains sludge impurities, the sludge impurities in the exhaust gas are washed by the second liquid heat exchange medium 323 and remain in the second liquid heat exchange medium 323 during the gas-liquid interaction in the heat exchange tank 31. In order to keep the second liquid heat exchange medium 323 clean and to ensure the efficiency of heat exchange, the control valve 312 may be opened to introduce water into the heat exchange tank 31 from the clear liquid inlet 311 at the bottom of the heat exchange tank 31, and when the liquid level in the heat exchange tank 31 reaches the turbid liquid outlet 315, the second liquid heat exchange medium 323 flows out from the turbid liquid outlet 315.
As the sludge impurities in the liquid continue to increase, the liquid in the heat exchange tank 31 becomes cloudy, thereby affecting heat exchange and cleaning of the tail gas entering later, and some devices also require maintenance or replacement. For this purpose, the control valve 312 may be closed, water inflow may be stopped, and the control valve 314 may be opened to drain the liquid from the waste liquid outlet 313 at the bottom of the heat exchange tank 31, and then the reverse operation may be performed to store water again into the heat exchange tank 31.
According to a preferred embodiment of the present invention, the exhaust gas purification and heat recovery system further comprises a third compressed gas flow path comprising a control valve 318, a compressed gas inlet 316 arranged near the bottom of the heat exchange tank 31 and a gas pipe 317 arranged near the bottom of the heat exchange tank 31. Compressed gas enters the gas pipe 317 via the compressed gas inlet 316 and is injected into the second liquid heat exchange medium of the heat exchange tank 31 through a plurality of small holes provided in the gas pipe, and then enters the gas collecting device 6 or the third heat exchanger 25 together with the off-gas.
If the sludge impurity at the bottom of the heat exchange tank 31 is excessively accumulated to affect the heat exchange efficiency of the second heat exchanger 24, the control valve 318 may be opened to allow the compressed gas to reach the gas pipe 317 provided near the bottom of the heat exchange tank 31 from the compressed gas inlet 316. Thereafter, the compressed gas is ejected through a plurality of small holes provided on the gas pipe 317 and agitates the sludge impurities at the bottom of the heat exchange box 31 to facilitate the discharge of the sludge impurities from the turbid liquid outlet 315. The compressed gas leaving the second liquid heat exchange medium 323 is collected in the gas collecting device 6 above the heat exchange box 31 and therewith enters the third heat exchanger 25 together with the heat exchanged and cleaned off-gas in the gas collecting device 6, and is subsequently discharged to the environment or other treatment devices via the gas outlet 322.
According to a preferred embodiment of the invention, the gas collecting device 6 may not be provided, and the tail gas which has undergone heat exchange and cleaning may be passed directly through said third heat exchanger 25 for heat exchange with the first heat exchange medium flowing through the third heat exchanger 25.
According to a preferred embodiment of the invention, the second heat exchanger 24 is placed directly in the heat exchange tank 31, whereby a sufficient heat exchange is achieved.
According to a preferred embodiment of the invention, the process gas is air. However, the process gas may be any other gas suitable for the present invention.
According to a preferred embodiment of the invention, the process gas is fed from the first heat exchanger 22 to the sludge treatment plant by ventilation means 4. The ventilation device 4 is preferably a blower device and/or an air-guiding device.
According to a preferred embodiment of the invention, the sludge treatment device is a sludge drying device 1. However, the sludge treatment device may be any other sludge treatment device. The exhaust gas after the drying treatment, i.e., the tail gas, is discharged from the sludge drying apparatus 1 into the second purifying and heat exchanging flow path 3.
When the exhaust gas purification and heat recovery system described above is put into use, the process gas is taken from the air of the external environment, generally using the following operation steps.
First, the first heat exchange flow path 2 and the second purification and heat exchange flow path 3 are started. The control valve 312 is opened and a second liquid heat exchange medium 323, such as water, is injected into the heat exchange tank 31 from the liquid inlet 311. Normally, the second liquid heat exchange medium 323 is to reach a predetermined liquid level in the heat exchange tank 31. Then, the control valve 312 is closed.
Air enters through the air inlet 5, flows over the compressor 21, and then flows to the first heat exchanger 22. The first heat exchanger 22 heats the air, and the heated air is pressurized by the ventilation device 4 (e.g., a blower device and/or a draught fan) and then fed into the sludge drying device 1. In the sludge drying apparatus 1, the heated air is used as a treatment gas to participate in the sludge drying treatment. After the heated air becomes the tail gas with the sludge impurities, it is discharged from the sludge drying apparatus 1 and flows into the gas distribution apparatus 32 via a pipe. The tail gas is collected in the gas distribution device 32 and is discharged into the second liquid heat exchange medium 323 in the heat exchange box 31 through the air inlet pipeline 321 so as to transfer the heat in the tail gas to the second liquid heat exchange medium 323, thereby realizing gas-liquid heat exchange and further realizing heat recovery of the heat in the tail gas. During this heat exchange, the temperature of the exhaust gas is reduced and automatically flows upwards above the liquid level of the second liquid heat exchange medium 323 and is then collected by the gas collecting device 6. The collected tail gas is fed to a third heat exchanger 25 for heat exchange with the first heat exchange medium in the third heat exchanger 25, and the purified and cooled tail gas is subsequently discharged to the environment or other treatment means.
At the same time, the compressor 21 compresses the first heat exchange medium, and discharges the compressed first heat exchange medium into the first heat exchanger 22. In the first heat exchanger 22, the first heat exchange medium releases heat to the air flowing through the first heat exchanger 22 to effect heat exchange between the first heat exchange medium and the air. The condensed first heat exchange medium then passes through a throttle valve 23 to the second heat exchanger 24 and/or the third heat exchanger 25. As noted above, the second liquid heat exchange medium 323 in the heat exchange tank 31 absorbs heat from the exhaust gas, causing its temperature to rise. Therefore, the first heat exchange medium can absorb the heat in the second liquid heat exchange medium 323 in the second heat exchanger 24 to evaporate, and heat exchange between the two is realized, so that the temperature of the second liquid heat exchange medium 323 is reduced. The second liquid heat exchange medium 323 in the heat exchange tank 31 is thus able to continue to absorb heat of the exhaust gas discharged therein. The tail gas heat is converted into the second liquid heat exchange medium, and then the second liquid heat exchange medium transfers the heat energy to the second heat exchanger, so that the multi-phase heat energy conversion is realized, and the heat energy transfer efficiency is greatly improved; through the heat energy conversion of tail gas, the second liquid heat exchange medium and the first heat exchange medium, heat can be fully recovered, heat loss is reduced, and therefore energy consumption is reduced.
Since the exhaust gas contains sludge impurities, the sludge impurities in the exhaust gas are washed by the second liquid heat exchange medium 323 and remain in the second liquid heat exchange medium 323 during the gas-liquid interaction in the heat exchange tank 31.
Subsequently, in order to keep the second liquid heat exchange medium 323 clean, the control valve 312 may be opened as needed, the second liquid heat exchange medium 323 (e.g. water) may be introduced into the heat exchange tank 31 from the clear liquid inlet 311 at the bottom of the heat exchange tank 31, and when the liquid level in the heat exchange tank 31 reaches the turbid liquid outlet 315, the second liquid heat exchange medium 323 flows out from the turbid liquid outlet 315. Normally, the second liquid heat exchange medium 323 is to reach a predetermined liquid level in the heat exchange tank 31. Then, the control valve 312 is closed.
As the sludge impurities in the liquid continue to increase, the liquid in the heat exchange tank 31 becomes cloudy, thereby affecting heat exchange and cleaning of the tail gas entering later, and some devices also require maintenance or replacement. For this purpose, the control valve 312 may be closed, water inflow may be stopped, and the control valve 314 may be opened to drain the liquid from the waste liquid outlet 313 at the bottom of the heat exchange tank 31, and then the reverse operation may be performed to store water again into the heat exchange tank 31.
If the sludge impurity at the bottom of the heat exchange tank 31 is excessively accumulated to affect the heat exchange efficiency of the second heat exchanger 24, the control valve 318 may be opened to allow the compressed gas to reach the gas pipe 317 provided near the bottom of the heat exchange tank 31 from the compressed gas inlet 316. Thereafter, the compressed gas is ejected through a plurality of small holes provided on the gas pipe 317 and agitates the sludge impurities at the bottom of the heat exchange box 31 to facilitate the discharge of the sludge impurities from the turbid liquid outlet 315. The compressed gas leaving the liquid is collected in the gas collecting device 6 above the heat exchange box 31 and therewith enters the third heat exchanger 25 together with the tail gas in the gas collecting device 6, which has been subjected to heat exchange and washing, and is subsequently discharged to the environment or other treatment devices via the gas outlet 322.
The invention has been described with respect to certain preferred embodiments and variations thereof. Modifications and alterations will occur to others upon reading and understanding the specification. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (18)
1. An exhaust gas purification and heat recovery system for sludge treatment, comprising:
A first heat exchange flow path including a first heat exchanger in which a first heat exchange medium circulates to heat a process gas for sludge treatment in the first heat exchanger, and a second heat exchanger and a third heat exchanger arranged downstream of the first heat exchanger;
a second purification and heat exchange flow path comprising a heat exchange tank containing a second liquid heat exchange medium, the sludge treated tail gas being discharged into the heat exchange tank, cleaned by the second liquid heat exchange medium in the heat exchange tank and transferring heat to the second liquid heat exchange medium to be cooled, the second heat exchanger being in heat exchange relationship with the second liquid heat exchange medium in the heat exchange tank to transfer heat from the second liquid heat exchange medium to the first heat exchange medium in the second heat exchanger; and
The gas distribution device is arranged on the upstream of the air inlet pipeline of the heat exchange box and is used for enabling the tail gas after sludge treatment to uniformly enter the heat exchange box,
Wherein the tail gas of the heat exchange box flows through the third heat exchanger and is used for heat exchange with the first heat exchange medium flowing through the third heat exchanger,
The second heat exchanger is arranged inside the heat exchange box, and in the heat exchange box, the tail gas also directly transfers heat to a first heat exchange medium in the second heat exchanger;
And a third compressed gas flow path including a compressed gas inlet provided near the bottom of the heat exchange tank, a control valve configured to introduce compressed gas into the gas pipe via the compressed gas inlet when necessary, and to spray the compressed gas into the second liquid heat exchange medium of the heat exchange tank through a plurality of small holes provided on the gas pipe, and then to be discharged together with the off-gas, and a gas pipe provided near the bottom of the heat exchange tank.
2. The exhaust gas purification and heat recovery system according to claim 1, further comprising a gas collecting device provided above the heat exchange tank for collecting exhaust gas from the heat exchange tank.
3. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the first heat exchange flow is constituted by a heat exchange circuit comprising a compressor arranged upstream of the first heat exchanger and a throttle valve arranged downstream of the first heat exchanger and upstream of the second heat exchanger, the compressor being adapted to compress the first heat exchange medium and to direct the compressed first heat exchange medium to the first heat exchanger, the first heat exchange medium heating the process gas in the first heat exchanger and then flowing into the second heat exchanger via the throttle valve.
4. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the heat exchange tank includes a clear liquid inlet and a waste liquid outlet provided near a bottom of the heat exchange tank and a turbid liquid outlet provided at an upper portion of the heat exchange tank.
5. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the second heat exchanger is arranged in series upstream or downstream of the third heat exchanger.
6. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the second heat exchanger is arranged in parallel with the third heat exchanger.
7. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the second liquid heat exchange medium is a cleaning liquid.
8. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the exhaust gas is discharged into the heat exchange tank below a liquid level in the heat exchange tank.
9. The exhaust gas purification and heat recovery system according to claim 8, wherein the heat exchange tank is provided with an intake pipe located below the liquid surface.
10. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the process gas is air.
11. The exhaust gas purification and heat recovery system according to claim 1 or 2, wherein the process gas is sent from the first heat exchanger to a sludge drying device by a ventilation device.
12. A tail gas purification and heat recovery method for sludge treatment, comprising:
providing a first heat exchange flow path comprising a first heat exchanger, and a second heat exchanger and a third heat exchanger arranged downstream of the first heat exchanger, a first heat exchange medium circulating in the first heat exchange flow path to heat a process gas for sludge treatment in the first heat exchanger;
Providing a second purification and heat exchange flow path comprising a heat exchange tank containing a second liquid heat exchange medium, into which the sludge treated tail gas is discharged, cleaned by the second liquid heat exchange medium in the heat exchange tank and heat is transferred to the second liquid heat exchange medium to be cooled, the second heat exchanger being in heat exchange relationship with the second liquid heat exchange medium in the heat exchange tank to transfer heat of the second liquid heat exchange medium to the first heat exchange medium in the second heat exchanger;
Filling the heat exchange tank with the second liquid heat exchange medium;
Activating the first heat exchange flow path and the second purification and heat exchange flow path so that process gas is heated in the first heat exchanger and then fed to a sludge drying device, and tail gas discharged from the sludge drying device is input into the heat exchange box so that the tail gas is washed by the second liquid heat exchange medium and heat is transferred to the second liquid heat exchange medium to be cooled; and
Flowing the tail gas of the heat exchange box through the third heat exchanger for heat exchange with the first heat exchange medium flowing through the third heat exchanger,
The second heat exchanger is arranged inside the heat exchange box, and in the heat exchange box, the tail gas also directly transfers heat to the first heat exchange medium in the second heat exchanger.
13. The exhaust gas purifying and heat recovering method according to claim 12, further comprising:
Providing a gas collecting device, wherein the gas collecting device is arranged above the heat exchange box and is used for collecting tail gas from the heat exchange box; and
The exhaust gas of the heat exchange tank is collected by the gas collecting device before the exhaust gas of the heat exchange tank flows through the third heat exchanger.
14. The exhaust gas purifying and heat recovering method according to claim 12 or 13, wherein the first heat exchanging flow path includes a compressor arranged upstream of the first heat exchanger and a throttle valve arranged downstream of the first heat exchanger and upstream of the second heat exchanger, the compressor being configured to compress the first heat exchanging medium and guide the compressed first heat exchanging medium to the first heat exchanger, the first heat exchanging medium heating the process gas in the first heat exchanger and then flowing into the second heat exchanger via the throttle valve.
15. The exhaust gas purifying and heat recovering method according to claim 12 or 13, further comprising: the gas distribution device is arranged on the upstream of the gas inlet pipeline of the heat exchange box and is used for enabling the tail gas to uniformly enter the heat exchange box.
16. The exhaust gas purifying and heat recovering method according to claim 12 or 13, further comprising: a third compressed gas flow path is provided, which includes a compressed gas inlet provided near the bottom of the heat exchange tank and a gas pipe provided near the bottom of the heat exchange tank, through which compressed gas enters the gas pipe, and is injected into the second liquid heat exchange medium of the heat exchange tank through a plurality of small holes provided in the gas pipe, and is then discharged together with the off-gas.
17. The exhaust gas purification and heat recovery method according to claim 12 or 13, wherein the second heat exchanger is arranged in series upstream or downstream of the third heat exchanger.
18. The exhaust gas purification and heat recovery method according to claim 12 or 13, wherein the second heat exchanger is arranged in parallel with the third heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452211.2A CN109141066B (en) | 2017-06-15 | 2017-06-15 | Tail gas purification and heat recovery system and method for sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452211.2A CN109141066B (en) | 2017-06-15 | 2017-06-15 | Tail gas purification and heat recovery system and method for sludge treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109141066A CN109141066A (en) | 2019-01-04 |
| CN109141066B true CN109141066B (en) | 2024-06-04 |
Family
ID=64829920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710452211.2A Active CN109141066B (en) | 2017-06-15 | 2017-06-15 | Tail gas purification and heat recovery system and method for sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141066B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4949652A (en) * | 1989-06-26 | 1990-08-21 | Hadley Henry H | Waste disposal system |
| RU2049241C1 (en) * | 1992-04-10 | 1995-11-27 | Романов Геннадий Николаевич | Device for purifying exhaust gases |
| JPH0833826A (en) * | 1994-07-25 | 1996-02-06 | Babcock Hitachi Kk | Treatment of boiler waste combustion gas for coal fired thermal power plant and device therefor |
| CN201186893Y (en) * | 2008-03-14 | 2009-01-28 | 清华大学 | Heat pump and sludge dewatering integrated system |
| CN101618931A (en) * | 2009-07-28 | 2010-01-06 | 清华大学 | Mud drying and incinerating integrated system and use method thereof |
| CN101774743A (en) * | 2010-01-26 | 2010-07-14 | 沈阳航空工业学院 | Latent heat recoverable multi-phase change sludge drying method and device |
| TW201039913A (en) * | 2009-05-15 | 2010-11-16 | Jg Environmental Tech Co Ltd | Wet-type washing, purification and recycling apparatus and method for organic waste gas |
| CN101991995A (en) * | 2009-08-17 | 2011-03-30 | 张文波 | Washing tower |
| CN102022829A (en) * | 2009-09-09 | 2011-04-20 | 中国科学院工程热物理研究所 | Immersed condensation heat exchanger and application thereof |
| CN102276130A (en) * | 2011-05-31 | 2011-12-14 | 陈海渊 | Sludge resource treatment apparatus and sludge treatment method using the same |
| CN202398241U (en) * | 2011-09-09 | 2012-08-29 | 上海森松新能源设备有限公司 | Chlorosilane washing tower |
| RU2482901C1 (en) * | 2012-04-19 | 2013-05-27 | Олег Савельевич Кочетов | Device for cleaning and recovery of off-gases |
| CN203123739U (en) * | 2012-12-26 | 2013-08-14 | 成都源创环保工程有限公司 | Exhaust gas spray tower with built-in heat exchange |
| CN105194964A (en) * | 2015-10-20 | 2015-12-30 | 秦皇岛首创思泰意达环保科技有限公司 | Method and device for washing and hot mass transfer of pollutants in gas |
| CN105819646A (en) * | 2015-01-07 | 2016-08-03 | 广州新致晟环保科技机械设备有限公司 | System and method thereof for recovering heat in tail gas from dried sludge |
| CN207335482U (en) * | 2017-06-15 | 2018-05-08 | 广州新致晟环保科技机械设备有限公司 | Tail gas clean-up and heat recovery system for Treatment of Sludge |
-
2017
- 2017-06-15 CN CN201710452211.2A patent/CN109141066B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4949652A (en) * | 1989-06-26 | 1990-08-21 | Hadley Henry H | Waste disposal system |
| RU2049241C1 (en) * | 1992-04-10 | 1995-11-27 | Романов Геннадий Николаевич | Device for purifying exhaust gases |
| JPH0833826A (en) * | 1994-07-25 | 1996-02-06 | Babcock Hitachi Kk | Treatment of boiler waste combustion gas for coal fired thermal power plant and device therefor |
| CN201186893Y (en) * | 2008-03-14 | 2009-01-28 | 清华大学 | Heat pump and sludge dewatering integrated system |
| TW201039913A (en) * | 2009-05-15 | 2010-11-16 | Jg Environmental Tech Co Ltd | Wet-type washing, purification and recycling apparatus and method for organic waste gas |
| CN101618931A (en) * | 2009-07-28 | 2010-01-06 | 清华大学 | Mud drying and incinerating integrated system and use method thereof |
| CN101991995A (en) * | 2009-08-17 | 2011-03-30 | 张文波 | Washing tower |
| CN102022829A (en) * | 2009-09-09 | 2011-04-20 | 中国科学院工程热物理研究所 | Immersed condensation heat exchanger and application thereof |
| CN101774743A (en) * | 2010-01-26 | 2010-07-14 | 沈阳航空工业学院 | Latent heat recoverable multi-phase change sludge drying method and device |
| CN102276130A (en) * | 2011-05-31 | 2011-12-14 | 陈海渊 | Sludge resource treatment apparatus and sludge treatment method using the same |
| CN202398241U (en) * | 2011-09-09 | 2012-08-29 | 上海森松新能源设备有限公司 | Chlorosilane washing tower |
| RU2482901C1 (en) * | 2012-04-19 | 2013-05-27 | Олег Савельевич Кочетов | Device for cleaning and recovery of off-gases |
| CN203123739U (en) * | 2012-12-26 | 2013-08-14 | 成都源创环保工程有限公司 | Exhaust gas spray tower with built-in heat exchange |
| CN105819646A (en) * | 2015-01-07 | 2016-08-03 | 广州新致晟环保科技机械设备有限公司 | System and method thereof for recovering heat in tail gas from dried sludge |
| CN105194964A (en) * | 2015-10-20 | 2015-12-30 | 秦皇岛首创思泰意达环保科技有限公司 | Method and device for washing and hot mass transfer of pollutants in gas |
| CN207335482U (en) * | 2017-06-15 | 2018-05-08 | 广州新致晟环保科技机械设备有限公司 | Tail gas clean-up and heat recovery system for Treatment of Sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109141066A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109141065B (en) | Tail gas purification and heat recovery system and method for sludge treatment | |
| KR101521622B1 (en) | System to removing a white smoke | |
| CN212222781U (en) | System for utilize flue gas or steam waste heat to carry out airtight stoving to mud | |
| KR101695473B1 (en) | Waste heat recovery of exhaust gas and dehumidification device | |
| JP4155898B2 (en) | High moisture waste incineration facility equipped with gas turbine | |
| KR101334954B1 (en) | Steam supply and recovery system of boiler in sludge treating apparatus | |
| JP2005098552A5 (en) | ||
| CN102188888A (en) | A wet method treatment process of purified flue gas with a water collection function in the process and a processing apparatus thereof | |
| CN210772215U (en) | Smoke tower integrated smoke waste heat recovery device for waste incineration power plant | |
| CN109141066B (en) | Tail gas purification and heat recovery system and method for sludge treatment | |
| CN109141064B (en) | Tail gas purification and heat recovery system and method for sludge treatment | |
| KR100789001B1 (en) | Dring unit for organic wastes disposal system | |
| CN104154553A (en) | Flue gas treatment device | |
| CN109133572B (en) | Purification and heat recovery system and method for sludge drying waste gas | |
| CN207335482U (en) | Tail gas clean-up and heat recovery system for Treatment of Sludge | |
| CN103539215B (en) | Sewage treatment systems and technique | |
| CN109133571B (en) | Purification and heat recovery system and method for sludge drying waste gas | |
| CN205119109U (en) | Flue gas recovery system | |
| CN211176870U (en) | System suitable for flue gas condensation degree of depth is retrieved | |
| CN104649559B (en) | Utilize the low temperature belt-type drying device of fume afterheat | |
| CN207391233U (en) | Purification and heat recovery system for the exhaust gas of sludge drying | |
| CN215489815U (en) | Gas boiler flue gas waste heat recovery and integration SOx/NOx control dust pelletizing system | |
| CN2846429Y (en) | Pure dry type purifier for oxygen convertor smoke | |
| CN204372954U (en) | Industrial waste gas process and heat-energy recovering apparatus | |
| CN210050826U (en) | Device for evaporating waste water by using boiler flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210611 Address after: Room 48, 13 / F, No. 733 (1), Dongfeng East Road, Yuexiu District, Guangzhou, Guangdong 510000 Applicant after: Guangzhou Zhengsheng Technology Co.,Ltd. Address before: 510098 room 2205, starlight Ying, 119 Shui Yin Road, Yuexiu District, Guangzhou, Guangdong. Applicant before: SWISON CREATIVE ENVIRONMENTAL SOLUTIONS Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |