CN218119758U - Wet sludge treatment equipment - Google Patents
Wet sludge treatment equipment Download PDFInfo
- Publication number
- CN218119758U CN218119758U CN202221084546.6U CN202221084546U CN218119758U CN 218119758 U CN218119758 U CN 218119758U CN 202221084546 U CN202221084546 U CN 202221084546U CN 218119758 U CN218119758 U CN 218119758U
- Authority
- CN
- China
- Prior art keywords
- inlet
- outlet
- communicated
- flue gas
- steam
- 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
Images
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model discloses a wet sludge treatment equipment, including the vacuum drying ware that connects gradually, biomass gasification stove, steam boiler and first heat exchanger, biomass gasification stove includes: the gasification furnace comprises a gasification furnace body, a feed inlet, a biomass gas outlet, a water vapor inlet and an air inlet, wherein the feed inlet is communicated with a vacuum drier; the steam boiler comprises a boiler body, a burner, a biomass fuel gas inlet, a combustion-supporting gas inlet, a steam outlet and a high-temperature flue gas outlet, wherein the steam outlet is communicated with the steam inlet of the biomass gasification furnace; the first heat exchanger includes: the high-temperature flue gas inlet is communicated with the high-temperature flue gas outlet of a steam boiler, the low-temperature flue gas outlet is communicated with a chimney, and the hot air outlet is communicated with the air inlet of a biomass gasification furnace.
Description
Technical Field
The utility model relates to a domestic sludge treatment field, in particular to wet sludge treatment system.
Background
In the process of domestic sewage treatment, along with the discharge of a large amount of sludge, the amount of the sludge discharged by a sewage treatment plant is 3500 ten thousand tons in 2015, and the sludge yield in China reaches 6000 to 9000 thousand tons in 2020. The increasing of the sludge production amount and the serious shortage of the sludge treatment capability and the serious backward treatment of the treatment means form a sharp contradiction, the sludge treatment problem becomes an unavoidable urban environment problem, and therefore an economic and environment-friendly sludge treatment system for domestic sewage is urgently needed.
For example, the method and the device for incinerating wet sludge disclosed in the Chinese patent application No. 200410086312.5 directly incinerate the wet sludge at 800-950 ℃ in an incinerator or incinerate the wet sludge by adding auxiliary fuel; feeding the required air into the hearth in a grading manner; limestone may also be added to the furnace to reduce SO 2 And (5) discharging. The incineration treatment device comprises a hearth, a cyclone separator, a material returning device and a tail flue; the side wall of the hearth is insulated, the top of the hearth is provided with a wet sludge feeding port, and the lower part of the hearth is provided with an auxiliary fuel feeding port; and a high-temperature air preheater is arranged in the tail flue. However, the incineration disposal method and the incineration disposal apparatus for wet sludge have the following disadvantages or shortcomings: (1) Harmful gases in the sludge are not effectively removed; (2) the sludge treatment cost is high; (3) The fly ash content in the smoke discharged by the incineration treatment device is not monitored, and the fly ash content in the smoke judges whether the incineration efficiency is high or low and whether the incineration can be realized or notThe effective means of carbon neutralization cannot perform automatic regulation and control of combustion.
Also, as disclosed in the chinese patent application No. 201510029611.3, a high efficiency wet sludge drying treatment apparatus comprises a flat plate type sealed box body, a flat plate conveyor belt is installed in the flat plate type sealed box body, both the left and right ends of the flat plate conveyor belt are connected with a conveyor belt traction apparatus through a conveyor belt traction rope, a material distribution and receiving apparatus is arranged in the middle of the flat plate type sealed box body, an air suction pipe is arranged at the bottom of the flat plate type sealed box body, and the air suction pipe is connected with an air suction port of an air suction fan; the flat plate type sealing box body consists of a transparent plate on the upper layer surface, a lower membrane plate and a supporting frame, and an air inlet chamber is arranged on the transparent plate. However, the efficient wet sludge drying treatment equipment has the following disadvantages or shortcomings: (1) the sludge treatment process is complicated and high in cost; (2) the heat generated by the combustion of the sludge is not fully utilized.
Therefore, the wet sludge treatment equipment which has low treatment cost, can fully utilize and recycle the sludge, is provided with an online monitoring system for the fly ash content in the flue gas and can realize energy-saving and environment-friendly treatment is a problem which is urgently needed to be solved in the industry.
Disclosure of Invention
The utility model aims at providing a wet sludge treatment equips, its mud that can fully do benefit to the recovery produces biomass gas, recycles the heat energy formation steam that biomass gas burning produced, and steam not only can supply the steam user to use, but also can supply with again to the biomass gasification stove and use, has realized the effect of energy-concerving and environment-protective treatment mud.
In order to realize above-mentioned purpose, the utility model provides a wet sludge treatment equips, including vacuum drying ware, biomass gasification stove, steam boiler and the first heat exchanger that connects gradually, wherein, vacuum drying ware is used for becoming the mud granule with wet sludge drying, and biomass gasification stove includes: the gasification furnace comprises a gasification furnace body, a feed inlet arranged on the top wall of the gasification furnace body, a biomass fuel gas outlet arranged on the side wall of the gasification furnace body, a water vapor inlet and an air inlet arranged on the bottom wall of the gasification furnace body, wherein the feed inlet is communicated with a vacuum drier; the steam boiler comprises a boiler body, a combustor arranged at one end of the boiler body and used for combusting biomass gas, a biomass gas inlet arranged on the side wall of the combustor, a combustion-supporting gas inlet, a steam outlet arranged on the top wall of the boiler body and a high-temperature flue gas outlet arranged on the side wall of the boiler body, wherein the biomass gas inlet is communicated with the biomass gas outlet of the biomass gasification furnace, and the steam outlet is communicated with the steam inlet of the biomass gasification furnace through a steam pipeline; the first heat exchanger includes: the high-temperature flue gas inlet is communicated with the high-temperature flue gas outlet of a steam boiler, the low-temperature flue gas outlet is communicated with a chimney through a low-temperature flue gas pipeline, and the hot air outlet is communicated with the air inlet of the biomass gasification furnace through a hot air pipeline.
Preferably, the carbon neutralization control unit further comprises: the system comprises a smoke carbon content (fly ash content in smoke) detection device arranged in a smoke pipeline between a high-temperature smoke outlet of a steam boiler and a high-temperature smoke inlet of a first heat exchanger, and a first automatic controller which is in communication connection with the smoke carbon content (fly ash content in smoke) detection device through a data line so as to obtain smoke carbon content (fly ash content in smoke) data and automatically regulate and control the combustion condition of the steam boiler according to the smoke carbon content (fly ash content in smoke) data to realize carbon neutralization.
Optionally, the first heat exchanger is a multi-orifice lance heat exchanger comprising: the heat exchanger body and locate the inside interior barrel rather than the aequilate of heat exchanger body, be formed with cold air inlet space between the roof of interior barrel and the roof of heat exchanger body, be formed with the hot-air space of giving vent to anger between the diapire of interior barrel and the diapire of heat exchanger body, the interior barrel vertically wears to be equipped with the porous spray tube group that a plurality of groups rectangle was arranged, each porous spray tube group of group includes outer tube and the inner tube with the axle center with the outer tube, be equipped with a plurality of through-hole on the pipe wall of every inner tube, the top of inner tube is open state, the bottom of inner tube is closed state, the top of outer tube is closed state, the bottom of outer tube is open state, the roof of heat exchanger body is located to cold air entry, the diapire of heat exchanger body is located to hot air outlet, a lateral wall of barrel is located to high temperature flue gas entry, another lateral wall of interior barrel is located to low temperature flue gas export, make high temperature flue gas overflow between a plurality of outer tubes in the inner chamber of interior barrel, in order to carry out the heat exchange to cold air between inner tube and outer tube.
Preferably, the first heat exchanger is a multi-hole nozzle labyrinth heat exchanger, the high-temperature flue gas inlet is arranged on one side wall of the inner cylinder, the low-temperature flue gas outlet is arranged on the other side wall of the inner cylinder, and a flue gas channel between the high-temperature flue gas inlet and the low-temperature flue gas inlet is arranged in the inner cavity of the inner cylinder to be of a labyrinth type.
Optionally, the hot air pipeline is provided with a hot air box, the hot air box is provided with an air inlet, a first air outlet and a second air outlet, the air inlet is communicated with the hot air outlet of the first heat exchanger, the first air outlet is communicated with the air inlet of the biomass gasification furnace through a first air branch, and the second air outlet is communicated with the combustion-supporting air inlet of the combustor of the steam boiler through a second air branch.
Optionally, the low-temperature flue gas pipeline is provided with a first flue gas branch and a second flue gas branch, and the first flue gas branch is communicated with the first air branch; the second flue gas branch is provided with a mixer, the mixer is provided with a first gas inlet, a second gas inlet and a gas outlet, the first gas inlet is communicated with the low-temperature flue gas outlet of the first heat exchanger, the second gas inlet is communicated with the second gas outlet of the hot air box, and the gas outlet is communicated with a combustion-supporting gas inlet of a combustor of the steam boiler.
Preferably, the carbon neutralization control unit further comprises an adjusting valve arranged at the air outlet of the mixer, the adjusting valve is in communication connection with the first automatic controller through a data line so as to adjust the amount of returned flue gas entering the steam boiler through the air outlet of the mixer according to the instruction of the first automatic controller, when the carbon content data of the flue gas obtained by the flue gas carbon content detection device exceeds the upper limit threshold set by the first automatic controller, the first automatic controller instructs the adjusting valve to increase the amount of the flue gas returned into the steam boiler until the carbon content data of the flue gas obtained by the flue gas carbon content detection device is lower than the upper limit threshold set by the first automatic controller, and when the carbon content data of the flue gas obtained by the flue gas carbon content detection device is lower than the lower limit threshold set by the first automatic controller, the first automatic controller instructs the adjusting valve to decrease the amount of the flue gas returned into the steam boiler until the carbon content data of the flue gas obtained by the flue gas carbon content detection device is higher than the lower limit threshold set by the first automatic controller.
Optionally, a steam distributing cylinder is arranged on the steam pipeline, the steam distributing cylinder is provided with a steam inlet, a first steam outlet and a second steam outlet, the steam inlet is communicated with the steam outlet of the steam boiler, the first steam outlet is communicated with the steam inlet of the biomass gasification furnace through a first steam branch, and the second steam outlet is communicated with a heat user through a second steam branch.
Optionally, an ejector is arranged on the first steam branch, the ejector is provided with a first ejection inlet, a second ejection inlet and an ejection outlet, the first ejection inlet is communicated with the first steam outlet of the branch cylinder, the second ejection inlet is communicated with the vacuum drier, and the ejection outlet is communicated with the steam inlet of the biomass gasification furnace.
Optionally, the vacuum dryer comprises a dryer body and a heating pipe arranged in the dryer body, the top wall of the dryer body is provided with a sludge inlet and a drying gas outlet, the bottom wall of the dryer body is provided with a sludge outlet, and the heating pipe is provided with a hot water inlet and a cold water outlet; the sludge inlet is communicated with the wet sludge bin, the sludge outlet is communicated with the feed inlet of the biomass gasification furnace, and the drying gas outlet is communicated with the second injection inlet of the injector.
Optionally, the energy-saving heat exchanger is provided with a hot lubricating oil inlet, a cold lubricating oil outlet, a hot water outlet and a cold water inlet, the hot water outlet is communicated with the hot water inlet of the vacuum dryer, the cold water inlet is communicated with the cold water outlet of the vacuum drying device, the hot lubricating oil inlet is communicated with the hot lubricating oil outlet of the air compressor, and the cold lubricating oil outlet is communicated with the cold lubricating oil inlet of the air compressor.
Optionally, the sludge inlet is communicated with the wet sludge bin through an auger conveyor, and the sludge outlet is communicated with the feed inlet of the biomass gasification furnace through a conveyor belt.
Alternatively, a feed bin is arranged at a feed inlet of the biomass gasification furnace, a feed valve is arranged at an outlet of the feed bin, valves are respectively arranged at a sludge inlet, a drying gas outlet and a sludge outlet of the vacuum dryer, and a pressurizing valve is arranged at a cold air inlet of the first heat exchanger.
Preferably, the detection device for the carbon content in the flue gas (the content of fly ash in the flue gas) is an infrared camera, the infrared camera takes at least ten infrared pictures within 10 minutes, the first automatic controller synthesizes the at least ten infrared pictures into a fusion picture in unit time, the first automatic controller obtains an average data value of the carbon content in the flue gas (the content of fly ash in the flue gas) in unit time according to the fusion picture in unit time, and automatically regulates and controls the combustion condition of the steam boiler according to the average data value of the carbon content in the flue gas (the content of fly ash in the flue gas); the first automatic controller comprises a wavelet fusion unit, the wavelet fusion unit comprises a wavelet decomposition subunit, a feature selection subunit and a wavelet inverse transformation subunit, the wavelet decomposition subunit decomposes at least ten infrared photos to be fused into a series of low-frequency sub-images and high-frequency sub-images in different directions, the feature selection subunit performs feature selection on the low-frequency sub-images and the high-frequency sub-images through feature selection and performs screening, and the wavelet inverse transformation subunit performs wavelet inverse transformation on fusion results obtained by the feature selection subunit to obtain a required fusion image.
Alternatively, the specific processing procedure of the wavelet decomposition sub-unit of the wavelet fusion unit can adopt various manners in the prior art, such as: performing a layer of wavelet decomposition on the first infrared picture to be fused to obtain an approximate component L 1 And three high frequency components HV 1 、HD 1 And HH 1 . Then, the second infrared picture to be fused is subjected to two-layer wavelet decomposition to obtain an approximate component L 2 And three high frequency components HV 2 、HD 2 And HH 2 And an approximation component LL of the second layer 2 And three high frequency components LHV 2 、LHD 2 And LHH 2 。
Optionally, the features select specific parts of the subunitThe process can be performed in various ways known in the art, for example: obtaining an approximate component L from the first infrared picture to be fused 1 And three high frequency components HV 1 、HD 1 And HH 1 A second layer approximation component LL obtained from the second infrared picture to be fused 2 And three high frequency components LHV 2 、LHD 2 And LHH 2 Respectively corresponding to the fusion.
For low frequency approximation component L 1 And LL 2 The specific fusion rule is as follows:
W L (x,y)＝k 1 W L1 (x,y)+k 2 W L2 (x,y)
W L (x,y)、W L1 (x,y)、W L2 (x, y) represent the approximate component subgraphs after and before fusion, respectively, where k is 1 、k 2 Are fusion coefficients.
The specific fusion rule for the high frequency components is as follows:
W Hi (x,y)＝k 1i W Li 1 +k 2i W Li 2 (i＝1,2,3)
W Hi (x,y)、W Li 1 、W Li 2 high frequency components in the i direction before and after fusion, respectively. k is a radical of 1i 、k 2i Respectively fusion coefficients.
The utility model has the advantages that: (1) The potential energy of the sludge is fully excavated, so that the sludge and biomass particles generate biomass fuel gas in the biomass gasification furnace and the biomass fuel gas is supplied to a steam boiler for combustion, the generated steam can be supplied to a heat user and can be supplied to the biomass gasification furnace, and the energy-saving effect is realized; (2) Toxic gas generated during drying of wet sludge and water vapor are injected into the biomass gasification furnace together, so that the toxic gas is prevented from being discharged into the atmosphere, the environment is not polluted, and the environment-friendly effect is realized; (3) The heat of the smoke discharged by the steam boiler is fully utilized, and the hot air generated after the cold air is subjected to heat exchange is provided for the steam boiler and the biomass gasification furnace, so that the smoke energy is utilized more thoroughly, the energy utilization rate is improved, and the stability of the combustion temperature of the steam boiler and the biomass gasification furnace is ensured; (4) The wet sludge is dried by utilizing the heat generated by the operation of the air compressor, so that the drying efficiency of the sludge is improved, and the energy-saving effect is realized; (5) The online monitoring system for the fly ash content in the flue gas is arranged, and the automatic regulation and control of combustion can be carried out according to the fly ash content in the flue gas.
Drawings
Fig. 1 shows a schematic view of the construction of the wet sludge treatment apparatus of the present invention.
Fig. 2A and 2B show schematic configuration diagrams of an embodiment of the first heat exchanger of the present invention.
Fig. 3 shows a schematic configuration diagram of another embodiment of the first heat exchanger of the present invention.
Fig. 4 shows a schematic configuration diagram of another embodiment of the wet sludge treatment apparatus of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1, as a non-limiting embodiment, the wet sludge treatment equipment provided by the present invention includes a vacuum dryer 1, a biomass gasification furnace 2, a steam boiler 3, a first heat exchanger 4, an energy-saving heat exchanger 5 and an air compressor 6.
Wet sludge in the wet sludge bin C passes through the auger conveyor J and enters the vacuum dryer 1, as shown in fig. 1, the vacuum dryer 1 comprises a dryer body (not numbered in the figure) and a heating pipe 10, a sludge inlet 11 and a drying gas outlet 12 are formed in the top wall of the dryer body, a sludge outlet 13 is formed in the bottom wall of the dryer body, and a hot water inlet 101 and a cold water outlet 102 are formed in the heating pipe 10, so that the wet sludge is conveyed to the sludge inlet 11 through the auger conveyor J and enters the vacuum dryer 1 for drying, the generated drying gas is discharged from the drying gas outlet 12, and the dried sludge is discharged through the sludge outlet 13 and conveyed to the biomass gasifier 2 through the dry sludge conveyor D.
As another non-limiting embodiment, the heat required by the vacuum dryer 1 is provided by the economizer heat exchanger 5 and the air compressor 6, as shown in fig. 1, the economizer heat exchanger 5 is provided with a hot lubricant inlet 51, a cold lubricant outlet 52, a hot water outlet 53 and a cold water inlet 54, the hot water outlet 53 is communicated with the hot water inlet 101 of the vacuum dryer 1, the cold water inlet 54 is communicated with the cold water outlet 102 of the vacuum dryer 1, the hot lubricant inlet 51 is communicated with the hot lubricant outlet 61 of the air compressor 6, and the cold lubricant outlet 52 is communicated with the cold lubricant inlet 62 of the air compressor 6.
From this, alright in order to effectively utilize the heat of the hot lubricating oil that the air compressor machine of work produced, through the effect of energy-conserving heat exchanger 5, with heat conduction to vacuum drying device 1, form the drying sludge with wet sludge heating drying to subsequent processing work is convenient for.
The biomass gasification furnace 2 comprises a gasification furnace body (not numbered in the figure), a feed inlet 21, a biomass fuel gas outlet 22, a water vapor inlet 23 and an air inlet 24, wherein a storage bin M is arranged at the feed inlet 21 and used for storing biomass particles KL and dried sludge dried by the vacuum dryer 1.
The steam boiler 3 comprises a boiler body 31, a burner 32, a biomass fuel gas inlet 321, a combustion-supporting gas inlet 322, a water vapor outlet 311 and a high-temperature flue gas outlet 312, wherein the biomass fuel gas inlet 321 is communicated with the biomass fuel gas outlet 22 of the biomass gasification furnace 2, so that the biomass fuel gas is introduced into the steam boiler 3 to be combusted under the action of an exhaust fan FJ, and the water vapor outlet 311 is communicated with the water vapor inlet 23 of the biomass gasification furnace 2 through a water vapor pipeline L1, thereby meeting the steam requirement of the biomass gasification furnace 2.
The first heat exchanger 4 comprises a heat exchanger body 40, a high-temperature flue gas inlet 41, a low-temperature flue gas outlet 42, a cold air inlet 43 and a hot air outlet 44, the high-temperature flue gas inlet 41 is communicated with a high-temperature flue gas outlet 312 of the steam boiler 3, the low-temperature flue gas outlet 42 is communicated with a chimney Y through a flue gas pipeline, a low-temperature flue gas pipeline L2 is connected with a flue gas pipeline between the chimney Y and the low-temperature flue gas outlet 42 so as to enable flue gas accounting for 30% -50% of the total amount (volume) of the flue gas to flow back into the system for re-combustion, and the hot air outlet 44 is communicated with an air inlet 24 of the biomass gasification furnace 2 through a hot air pipeline L3.
In this non-limiting embodiment, as shown in fig. 2A and 2B, the first heat exchanger 4 is a multi-hole nozzle heat exchanger, the inner cylinder 45 and the heat exchanger body 40 have the same width, a cold air inlet space K1 is formed between the top wall of the inner cylinder 45 and the top wall of the heat exchanger body 40, a hot air outlet space K2 is formed between the bottom wall of the inner cylinder 45 and the bottom wall of the heat exchanger body 40, a plurality of groups of multi-hole nozzle groups 46 are longitudinally arranged in a penetrating manner in the inner cylinder 40, each group of multi-hole nozzle groups 46 includes an outer tube 461 and an inner tube 462 coaxial with the outer tube, a plurality of through holes 463 are formed in the wall of each inner tube 462, the top of the inner tube 462 is open, the bottom of the inner tube 462 is closed, the top of the outer tube 461 is closed, the bottom of the outer tube 461 is open, the cold air inlet 43 is formed in the top wall of the heat exchanger body 40, the hot air outlet 44 is formed in the bottom wall of the heat exchanger body 40, the high temperature flue gas inlet 41 is formed in one side wall of the inner cylinder 45, the low temperature flue gas outlet 42 is formed in the other side wall of the inner cylinder 45, so that the high temperature flue gas is filled between the inner tube 461, and the inner tube is filled in the inner tube 45, so as to ensure that the cold air inlet 43 of the heat exchanger to perform heat exchanger, and the first heat exchange, thereby to perform the first heat exchange, and the first heat exchange efficiency is increased, and the first heat exchange is performed by pressurizing air inlet 462, and the first heat exchanger (the first heat exchanger).
As another non-limiting embodiment, as shown in fig. 3, the first heat exchanger 4 is a multi-hole nozzle labyrinth type heat exchanger, the high-temperature flue gas inlet 41 is disposed on one side wall of the inner cylinder 45, the low-temperature flue gas outlet 42 is disposed on the other side wall of the inner cylinder 45, and the plurality of multi-hole nozzles 46 are separated by disposing a partition wall (as shown by the dotted line in fig. 3), so that the flue gas channel YT between the high-temperature flue gas inlet 41 and the low-temperature flue gas inlet 42 is set to be of labyrinth type in the inner cavity of the inner cylinder 45, thereby extending the heat exchange path, extending the heat exchange time between the high-temperature flue gas and the cold air, reducing the heat load of each multi-hole nozzle group 46, and further extending the service life of the whole heat exchanger.
As shown in fig. 1, a hot air box 7 is disposed on the hot air pipeline L3, the hot air box 7 is provided with an air inlet 70, a first air outlet 71 and a second air outlet 72, the air inlet 70 is communicated with the hot air outlet 44 of the first heat exchanger 4, the first air outlet 71 is communicated with the air inlet 24 of the biomass gasification furnace 2 through a first air branch G1, and the second air outlet 72 is communicated with the combustion-supporting air inlet 322 of the combustor 32 of the steam boiler 3 through a second air branch G2.
In this non-limiting embodiment, the low-temperature flue gas pipeline L2 is provided with a first flue gas branch L21 and a second flue gas branch L22, the first flue gas branch L21 is communicated with the first air branch G1, the second flue gas branch L22 is provided with a mixer 8, the mixer is provided with a first gas inlet 81, a second gas inlet 82 and a gas outlet 83, the first gas inlet 81 is communicated with the low-temperature flue gas outlet 42 of the first heat exchanger 4, the second gas inlet 82 is communicated with the second gas outlet 72 of the hot air box 7, and the gas outlet 83 is communicated with the combustion-supporting gas inlet 322 of the combustor 32 of the steam boiler 3. Wherein, the smoke amount in the first smoke branch L21 accounts for 30-40% of the total smoke amount in the low-temperature smoke pipeline L2, and the smoke amount in the second smoke branch L22 accounts for 60-70% of the total smoke amount in the low-temperature smoke pipeline L2.
As another non-limiting embodiment, the steam pipeline L1 is provided with a branch cylinder F, the branch cylinder F is provided with a steam inlet F0, a first steam outlet F1, and a second steam outlet F2, the steam inlet F0 is communicated with the steam outlet 311 of the steam boiler 3, the first steam outlet F1 is communicated with the steam inlet 23 of the biomass gasifier 2 through a first steam branch W1, and the second steam outlet F2 is communicated with the heat consumer U through a second steam branch W2. In this non-limiting embodiment, the amount of steam in the first steam branch W1 accounts for 20% to 30% of the total amount of steam in the minute cylinder F, and the amount of steam in the second steam branch W2 accounts for 70% to 80% of the total amount of steam in the minute cylinder F.
In the non-limiting embodiment, an ejector S is arranged on the first steam branch W, the ejector S is provided with a first ejection inlet S1, a second ejection inlet S2 and an ejection outlet S3, the first ejection inlet S1 is communicated with the first steam outlet F1 of the branch cylinder F, the second ejection inlet S2 is communicated with the drying gas outlet 12 of the vacuum dryer 1, and the ejection outlet S3 is communicated with the steam inlet 23 of the biomass gasification furnace 2.
In order to facilitate the work of the control system, the outlet of the stock bin M is provided with a feeding valve V1, and the sludge inlet 11, the drying gas outlet 12 and the sludge outlet 13 of the vacuum drier 1 are respectively provided with a valve V2.
Therefore, under the drying action of hot water at about 70 ℃, wet sludge in the vacuum dryer 1 enters the biomass gasifier 2 together with biomass particles, generated biomass fuel gas is supplied to the steam boiler 3 for combustion, most of generated water vapor is supplied to a user U, the rest small part of the generated water vapor and toxic and harmful gas generated during the drying of the wet sludge enter the biomass gasifier 2 again for reaction, the harm that the toxic and harmful gas is directly discharged into the atmosphere is effectively eliminated, meanwhile, high-temperature flue gas generated by the steam boiler generates hot air at about 500 ℃ through the action of the first heat exchanger 4, the hot air can be supplied to the biomass gasifier 2 and also supplied to the steam boiler 3, the combustion rate can be effectively improved, the combustion stability of a furnace body can be ensured, the combustion temperature is not easy to fluctuate, in addition, the temperature of the flue gas after heat exchange is still about 150 ℃, the flue gas can also return to the biomass gasifier 2 and the steam boiler 3 for combustion, and further utilizes the waste heat of the flue gas.
As still another non-limiting embodiment, as shown in fig. 4, further comprising a carbon neutralization control unit 9, the carbon neutralization control unit 9 comprising: a smoke carbon content detection device 91, a first automatic controller 92 and an adjusting valve 93. The flue gas carbon content detection device 91 is installed in a flue gas pipeline between the high-temperature flue gas outlet 312 of the steam boiler 3 and the high-temperature flue gas inlet 41 of the first heat exchanger 4, and the first automatic controller 92 is in communication connection with the flue gas carbon content detection device 91 through a data line, so that the flue gas carbon content (fly ash content in the flue gas) data can be obtained, and the combustion condition of the steam boiler 3 can be automatically regulated according to the flue gas carbon content (fly ash content in the flue gas) data, so as to achieve the purpose of carbon neutralization. The adjusting valve 93 is arranged at the air outlet 83 of the mixer 8, and the adjusting valve 83 is in communication connection with the first automatic controller 92 through a data line so as to adjust the amount of the returned flue gas entering the steam boiler 3 through the air outlet 83 of the mixer 8 according to the instruction of the first automatic controller 92, wherein when the carbon content data of the flue gas obtained by the flue gas carbon content detection device 91 exceeds the upper limit threshold set by the first automatic controller, the first automatic controller 92 instructs the adjusting valve 93 to increase the amount of the flue gas returned to the steam boiler 3 until the carbon content data of the flue gas obtained by the flue gas carbon content detection device 91 is lower than the upper limit threshold set by the first automatic controller 92, and when the carbon content data of the flue gas obtained by the flue gas carbon content detection device 91 is lower than the lower limit threshold set by the first automatic controller 92, the first automatic controller 92 instructs the adjusting valve 93 to decrease the amount of the flue gas returned to the steam boiler 3 until the carbon content data of the flue gas obtained by the flue gas carbon content detection device 91 is higher than the lower limit threshold set by the first automatic controller 92.
Although preferred embodiments of the present invention have been described in detail herein, it is to be understood that the invention is not limited to the precise construction herein described and illustrated, and that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. A wet sludge treatment apparatus, comprising: a vacuum drier, an energy-saving heat exchanger, an air compressor, a biomass gasification furnace and a steam boiler, wherein,
the vacuum dryer includes: the dryer comprises a dryer body and a heating pipe arranged in the dryer body, wherein a sludge inlet and a drying gas outlet are formed in the top wall of the dryer body, a sludge outlet is formed in the bottom wall of the dryer body, a hot water inlet and a cold water outlet are formed in the heating pipe, and the sludge inlet is communicated with a wet sludge bin;
the biomass gasification furnace includes: the biomass gasification furnace comprises a gasification furnace body, a feed inlet arranged on the top wall of the gasification furnace body, a biomass fuel gas outlet arranged on the side wall of the gasification furnace body, a water vapor inlet and an air inlet arranged on the bottom wall of the gasification furnace body, wherein the feed inlet is communicated with the vacuum drier;
the steam boiler comprises: the biomass fuel gas combustion furnace comprises a boiler body, a combustor arranged at one end of the boiler body and used for combusting biomass fuel gas, a biomass fuel gas inlet arranged on the side wall of the combustor, a combustion-supporting gas inlet, a water vapor outlet arranged on the top wall of the boiler body, and a high-temperature flue gas outlet arranged on the side wall of the boiler body, wherein the biomass fuel gas inlet is communicated with the biomass fuel gas outlet of the biomass gasification furnace, and the water vapor outlet is communicated with the water vapor inlet of the biomass gasification furnace through a water vapor pipeline;
the energy-saving heat exchanger is provided with a hot lubricating oil inlet, a cold lubricating oil outlet, a hot water outlet and a cold water inlet, the hot water outlet is communicated with the hot water inlet of the vacuum dryer, the cold water inlet is communicated with the cold water outlet of the vacuum dryer, the hot lubricating oil inlet is communicated with the hot lubricating oil outlet of the air compressor, and the cold lubricating oil outlet is communicated with the cold lubricating oil inlet of the air compressor.
2. The wet sludge treatment plant of claim 1 further comprising a first heat exchanger, the first heat exchanger comprising: the biomass gasification furnace comprises a heat exchanger body, a high-temperature flue gas inlet, a low-temperature flue gas outlet, a cold air inlet and a hot air outlet, wherein the high-temperature flue gas inlet, the low-temperature flue gas outlet, the cold air inlet and the hot air outlet are arranged on the heat exchanger body, the high-temperature flue gas inlet is communicated with the high-temperature flue gas outlet of the steam boiler, the low-temperature flue gas outlet is communicated with a chimney through a low-temperature flue gas pipeline, and the hot air outlet is communicated with the air inlet of the biomass gasification furnace through a hot air pipeline.
3. The wet sludge treatment plant of claim 2 wherein the first heat exchanger is a multi-orifice lance heat exchanger comprising: the heat exchanger comprises a heat exchanger body and an inner cylinder body which is arranged inside the heat exchanger body and has the same width with the heat exchanger body, wherein a cold air inlet space is formed between the top wall of the inner cylinder body and the top wall of the heat exchanger body, a hot air outlet space is formed between the bottom wall of the inner cylinder body and the bottom wall of the heat exchanger body, a plurality of groups of porous spray pipe groups which are arranged in a rectangular mode are longitudinally arranged in the inner cylinder body in a penetrating mode, each group of porous spray pipe groups comprise an outer pipe and an inner pipe which is coaxial with the outer pipe, a plurality of through holes are formed in the pipe wall of each inner pipe, the top of each inner pipe is in an open state, the bottom of each inner pipe is in a closed state, the top of each outer pipe is in an open state, a cold air inlet is formed in the top wall of the heat exchanger body, a hot air outlet is formed in the bottom wall of the heat exchanger body, a high-temperature flue gas inlet is formed in one side wall of the inner cylinder body, and a low-temperature flue gas outlet is formed in the other side wall of the inner cylinder body, so that the high-temperature flue gas outer pipe overflows among a plurality of inner cylinder body and cold air between the inner cylinder body to exchange heat exchange cold air between the inner pipe and the inner cylinder body.
4. The wet sludge treatment equipment according to claim 3, wherein a hot air box is provided on the hot air pipeline, the hot air box is provided with an air inlet, a first air outlet and a second air outlet, the air inlet is communicated with the hot air outlet of the first heat exchanger, the first air outlet is communicated with the air inlet of the biomass gasification furnace through a first air branch, and the second air outlet is communicated with the combustion-supporting air inlet of the combustor of the steam boiler through a second air branch.
5. The wet sludge treatment equipment of claim 4 wherein the low temperature flue gas pipeline is provided with a first flue gas branch and a second flue gas branch, the first flue gas branch being communicated with the first air branch; the second flue gas branch is provided with a mixer, the mixer is provided with a first gas inlet, a second gas inlet and a gas outlet, the first gas inlet is communicated with the low-temperature flue gas outlet of the first heat exchanger, the second gas inlet is communicated with the second gas outlet of the hot air box, and the gas outlet is communicated with a combustion-supporting gas inlet of a combustor of the steam boiler.
6. The wet sludge treatment equipment according to claim 5, wherein a steam distribution cylinder is provided on the steam pipeline, the steam distribution cylinder is provided with a steam inlet, a first steam outlet and a second steam outlet, the steam inlet is communicated with the steam outlet of the steam boiler, the first steam outlet is communicated with the steam inlet of the biomass gasification furnace through a first steam branch, and the second steam outlet is communicated with a heat consumer through a second steam branch.
7. The wet sludge treatment equipment according to claim 6, wherein an ejector is arranged on the first steam branch, the ejector is provided with a first ejector inlet, a second ejector inlet and an ejector outlet, the first ejector inlet is communicated with the first steam outlet of the branch cylinder, the second ejector inlet is communicated with the drying gas outlet of the vacuum drier, and the ejector outlet is communicated with the steam inlet of the biomass gasification furnace.
8. The wet sludge treatment equipment according to claim 7, wherein the sludge inlet is communicated with the wet sludge bin through an auger conveyor, the sludge outlet is communicated with the feed inlet of the biomass gasification furnace through a conveyor belt, a bin is arranged at the feed inlet of the biomass gasification furnace, a feed valve is arranged at the outlet of the bin, valves are respectively arranged at the sludge inlet, the drying gas outlet and the sludge outlet of the vacuum dryer, and a pressurizing valve is arranged at the cold air inlet of the first heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221084546.6U CN218119758U (en) | 2022-05-08 | 2022-05-08 | Wet sludge treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221084546.6U CN218119758U (en) | 2022-05-08 | 2022-05-08 | Wet sludge treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218119758U true CN218119758U (en) | 2022-12-23 |
Family
ID=84511818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221084546.6U Active CN218119758U (en) | 2022-05-08 | 2022-05-08 | Wet sludge treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218119758U (en) |
-
2022
- 2022-05-08 CN CN202221084546.6U patent/CN218119758U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111288463A (en) | Sludge drying and incinerating system and drying and incinerating method | |
| CN108980847B (en) | A kind of rubbish charing burning treatment process | |
| CN201670797U (en) | Sludge drying and incinerating system | |
| CN106755718B (en) | The fume waste heat utilization and dust removal integrated system and technique that pneumatic steelmaking generates | |
| CN106678830A (en) | Waste incineration flue gas and air system and incineration control method | |
| CN100432532C (en) | Combined incineration treatment method for refuse and special vertical oxygen-enriched continuous incinerator | |
| CN213207855U (en) | Composite fluidized bed sludge incineration treatment system | |
| CN111637465B (en) | Treatment system and method for combustible industrial solid waste | |
| CN116697359B (en) | Folding three-effect fire grate process | |
| CN106082571A (en) | Low heat value mud three change processes technique and device | |
| CN218119758U (en) | Wet sludge treatment equipment | |
| CN2462252Y (en) | Heat decomposing garbage incinerator | |
| CN108613194A (en) | A kind of method and device for villages and small towns consumer waste incineration | |
| CN102353044A (en) | Gas combustion-supporting device of recirculating fluidized bed and combustion control device of recirculating fluidized bed | |
| CN218721507U (en) | High-efficient domestic waste burns burning furnace air distribution system | |
| CN107655010A (en) | Industrial waste destructive gasifying is pyrolyzed disposal system | |
| CN115385546A (en) | Wet sludge energy-saving treatment system | |
| CN111895420B (en) | Composite fluidized bed sludge incineration treatment furnace | |
| CN207622027U (en) | Industrial waste destructive gasifying is pyrolyzed disposal system | |
| CN219239497U (en) | Wet sludge energy-saving utilization equipment | |
| CN206347578U (en) | A kind of waste incineration air and gas system | |
| CN113048482B (en) | Garbage pyrolysis and gasification system device with drying function and garbage pyrolysis and gasification method | |
| CN202109741U (en) | Sludge baking and treatment system utilizing waste heat to generate high-temperature circulation air | |
| CN211847164U (en) | Activated carbon production equipment | |
| CN211176830U (en) | Rubbish spiral delivery integrated system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |