CN108291778A - The plasma boiler of tail gas closed loop ionization combustion - Google Patents

The plasma boiler of tail gas closed loop ionization combustion Download PDF

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Publication number
CN108291778A
CN108291778A CN201580084982.XA CN201580084982A CN108291778A CN 108291778 A CN108291778 A CN 108291778A CN 201580084982 A CN201580084982 A CN 201580084982A CN 108291778 A CN108291778 A CN 108291778A
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CN
China
Prior art keywords
plasma
boiler
tail gas
closed loop
water
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Pending
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CN201580084982.XA
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Chinese (zh)
Inventor
王守国
燕恩亮
王龙哲
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Individual
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Individual
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

A kind of plasma boiler of tail gas closed loop ionization combustion includes boiler furnace (100), Plasma burning torch (109), exhaust collection cover (101), tail gas closed loop system, water charging system and hydrologic cycle cooling system etc..Wherein Plasma burning torch (109) uses direct-current plasma combustion torch, working gas is air and water vapour, boiler furnace (100) is placed on right over Plasma burning torch (109) nozzle, boiler furnace (100) is the suspension electrode with the earth insulation, it is set there are one exhaust collection cover (101) in the periphery of boiler furnace (100), the tail gas after Plasma burning all enters tail gas closed loop system by exhaust collection cover (101) collection and realizes repeatedly ionization combustion.

Description

The plasma boiler of tail gas closed loop ionization combustion Technical field
The present invention relates to a kind of plasma boilers of tail gas closed loop ionization combustion, the heating method at Boiler Furnace bottom is directly heated using hot plasma combustion torch more particularly, to one, plasma working gas be closed loop using air and the mixed gas of vapor, tail gas, do not use fossil fuel, plasma boiler without the discharge of any exhaust gas.
Background technique
Conventional boiler is using fossil fuel: coal, oil or natural gas inevitably bring exhaust gas to discharge using these fossil fuels, pollute atmospheric environment, and conventional boiler has to addition auxiliary fume treatment auxiliary, and energy consumption is high, use cost is high.
As for electric heating tube boiler seen by the past, due to being easy to be easy fouling formation thermoresistance layer in electrode pipe outer wall, energy conversion efficiency is low, is not easy to promote.
Atmospheric pressure heat plasma technology is widely used in recent years, such as is had been used to: plasma-torch cutting, plasma cladding, plasma propulsion and plasmaassisted burning are to power plant's igniting etc..
CN 101848595A, which is disclosed, is being sprayed onto power economized boiler combustion-supporting in conventional boiler burner hearth using after high-frequency and high-voltage dielectric barrier discharge electrolysis of water steam hydrogen manufacturing, may be implemented to save fuel 30%.The invention is that conventional boiler is utilized, and in conjunction with a plasma hydrogen preparing equipment, adds that some hydrolysis hydrogen are combustion-supporting in the boiler, which is a kind of combustion-supporting transformation to traditional fossil fuel burning boiler.Its used plasma type is the low-temperature cold plasma for belonging to dielectric barrier discharge, and since the temperature of this plasma is lower, hydrogen production efficiency is also difficult to improve.
CN 104315495A discloses the heat using boiler furnace gas and carries out heating to liquid water and generate high-temperature water vapor and be reinjected into the coal of burner hearth to carry out combustion-supporting burning.The invention is also a kind of combustion-supporting transformation to fossil fuel burning boiler.
Korean patent No. is that PCT/KR2010/004032 2010.06.22 discloses the mixed firinor fuel burning using metabolic water and waste oil, although it is combustion-supporting to also use plasma heating, but the plasma is using argon gas as working gas, use cost is high, burning in burner hearth is still burning on the basis of fossil fuel, exhaust emissions are inevitably generated, there is still a need for be further processed for tail gas.
Korean patent No. discloses a kind of structure that using plasma combustion torch carrys out heating coil water pipe for 1020110032551, the plasma heating efficiency of the structure is relatively low, many heat losses are into peripheral space, this heating can only be the function of heating pipe, it is difficult to generate steam, also inevitably generation carrys out environmental pollution.
U.S. Patent No. 1020110032551 discloses the multiple reflections using photon in mirror surface plasma, is heated using the vibration and radiation energy of photon to water body, and the heating efficiency of this form is low, is difficult to manufacture the boiler of large capacity.
At present apparently, using hot plasma combustion torch directly come heating boiler bottom of furnace body, and working gas is to use air and aqueous vapor, and do not have to any fossil fuel, the boiler of tail gas closed loop ionization combustion, at present still without precedent.
Summary of the invention
The present invention is to provide the plasma boiler of tail gas closed loop ionization combustion, it is the heating method that Boiler Furnace bottom is directly heated using direct current hot plasma combustion torch, the working gas of Plasma burning torch is the mixed gas of air and aqueous vapor, its tail gas is that closed loop utilizes, other any fossil fuels, no any exhaust gas discharge are not used.
Since the present invention is using direct current hot plasma combustion torch, the temperature of Plasma burning torch is thousands of degree, this makes the aqueous vapor entered in Plasma burning torch be easy to be ionized the burning resolved into hydrogen and oxygen and realize hydrogen-oxygen simultaneously.
Since in the present invention, the temperature on Plasma burning torch ground electrode spout is held in 500-700 degrees Celsius of range, more aqueous vapors are contributed in the high temperature section and are thermal decomposited into hydrogen and oxygen, to generate more oxyhydrogen combustions.
Boiler furnace of the present invention is the metal can of cylindrical shape, is internally provided with a certain amount of water, bottom is rounded bottom surface, it is located in the surface of a Plasma burning torch spout, and keeps certain gap.This heating method directly in furnace bottom bottom is also a kind of heating method of efficient heat transfer.
The boiler furnace, is equipped with an automatic water supplement pipe and valve in its bottom side, is equipped with the water level penetrated through with it a display meter and water level sensor in furnace body side, is equipped with a steam (vapor) outlet, gas gauge and steam overpressure explosion-proof equipment at an upper portion thereof.These boiler fittings ensure that the safe handling of boiler.
The periphery of the boiler furnace is equipped with exhaust collection cover made of a metal plate, is equipped with an air entry in the top position of the exhaust collection cover and then goes through tail gas closed loop system after the tail gas after burning is all collected into the air entry.It ensure that the boiler is without any exhaust emissions.
The Plasma burning torch is the hot plasma using direct-current arc power drives, it is made of a water-cooled cathode and a water cooling ground electrode with circular spout, cathode is the lower section for being fixed on ground electrode, an insulating materials is equipped between cathode and ground electrode, the insulating materials and two electrodes constitute an entirety, are placed on the lower section of boiler furnace.
Air inlet there are two being set on the insulating materials of plasma torch, gas is to enter between two electrodes to be ionized to form hot plasma by way of rotating inlet, the hot plasma is under the driving of certain stream pressure, it is sprayed upwards from the spout of ground electrode and forms hot plasma combustion torch, and be directly injected to the bottom of boiler to heat.
The cathode of the Plasma burning torch is the electrode with water cooling, it is connect with the output end cathode of DC power supply;The ground electrode of Plasma burning torch be connection with and be fixed on the platform of a metallic support, it constitutes same pole with exhaust collection cover and connect greatly;And boiler furnace is opened with exhaust collection cover, rack platform and steam output pipe and water supply pipe by insulating materials insulation, makes boiler furnace certainly As a suspension electrode.This connection type guarantees the boiler furnace in use, its bottom of arc through will not be directly formed with cathode.
The tail gas closed loop system that the present invention narrates, it is comprising gas pipeline, heat exchanger, air compressor, water ultrasonic atomizer and sealing ring etc..After tail gas after burning is collected by gas gathering mask, it is introduced into a heat exchanger, heat exchanger can carry out heat exchange to tail gas and cool, this heat exchange cooling, it is on the one hand to heat recycling, on the other hand be to guarantee that the gas temperature for entering air compressor is lower, can by normal compression pressurization because hot gas be difficult it is compressed.
In tail gas closed loop system, using the purpose of air compressor: one in order to have enough suction come burning after tail gas all be sucked out;Second is that carrying out compression pressurization to tail gas, to guarantee gas when flowing back between Plasma burning torch electrode, there is enough flow velocitys and flow, to guarantee the ejection length of Plasma burning torch.
In tail gas closed loop system, tail gas additionally flows through a ultrasonic atomizer, its purpose is to carry the aqueous vapor after ultrasonic atomizatio to enter together in hot plasma combustion torch, makes aqueous vapor by heat plasma volume ionization and pyrolysis, forms the vigorous combustion of hydrogen and oxygen.
The present invention uses flange seal between the bottom and ground electrode table top of exhaust collection cover, a form observation panel is equipped in its bottom side, to observe the combustion state of detection Plasma burning torch.
The water of ultrasonic atomizer is that automatic water supplement threshold switch is controlled by water level sensor to realize automatic water supplement;The moisturizing of boiler is also that automatic water supplement threshold switch is controlled by water level sensor to realize automatic water supplement, the water is taken from the water in water-cooling groove, the water of the water-cooling groove is due to cycle heat exchange, so that these water energys is maintained at certain thermal equilibrium temperature, energy-efficient purpose is also functioned to boiler replenishing water using the water (having certain temperature).
In order to extend the service life of Plasma burning torch cathode, on the one hand anticathode water cooling is the water-cooling pattern using big flow, and another aspect working gas is the mode rotated into, to avoid local arc;It is right in order to which the surface temperature of retentively electrode nozzle is the high temperature range at 500-700 degrees Celsius The water cooling of ground electrode will control the flow of water, and water cooling position is made to be arranged far from the bottom of ground electrode nozzle.
In order to guarantee that the cooling effect of heat exchanger in tail gas closed loop system, cooling water required for heat exchanger are to carry out heat exchange cooling by a set of independent water circulating pump and water route.
In order to improve the capacity of boiler, the boiler form that boiler of the present invention can be penetrated through with a steam gas collecting tank respectively using multiple furnace bodies, a Plasma burning torch is respectively adopted to heat in each furnace body, and the tail gas closed loop system and hydrologic cycle cooling system being respectively adopted, the steam that multiple furnace bodies generate focuses in a steam gas collecting tank, can produce the steam of higher pressure and greater flow.
Detailed description of the invention
With reference to the accompanying drawing to further description of the present invention.
Fig. 1 is the plasma boiler structure schematic cross-sectional view that the embodiment of the present invention one is tail gas closed loop ionization combustion.
Fig. 2 is the schematic structural cross-sectional view that the embodiment of the present invention one is Plasma burning torch part and mounting bracket.
Fig. 3 is the Plasma burning torch schematic structural cross-sectional view of the cooling ground electrode mode of another kind used by the embodiment of the present invention one.
Fig. 4 is the plasma boiler structure schematic cross-sectional view for the tail gas closed loop ionization combustion that the embodiment of the present invention two is multiple furnace structures.
List of numerals
100 boiler furnaces (stainless steel is made)
101 exhaust collection covers (metallic sheet material is made)
Gas outlet at the top of 102 exhaust collection covers
103 exhaust pipes
104 heat exchangers
105 air compressors
106 ultrasonic atomizers
107 water levels display meter
107A water level sensor
The outlet of 108 Boiler Steams
108 Boiler Steam outlet valves
109 Plasma burning torches
Water body in 110 boilers
111 plasma electrical sources
112 insulating materials
113 ground electrodes
114 cathodes
115 ultrasonic atomizers mend softening water tank automatically
116 air inlet pipe
117 boiler replenishing water threshold switch
118 Plasma burning torch spouts
119 insulating materials connecting pipe box
120 boiler replenishing water pipes
121 ground electrode water cooling water inlet pipes
122 ground electrode water cooling outlet pipes
123 cathode water cooling water inlet pipes (plastic tube)
124 cathode water cooling outlet pipes (plastic tube)
125 heat exchanger water cooling water inlet pipes
126 heat exchanger water cooling outlet pipes
127 sealing locating rings
128 softened water water supply tanks
129 automatic water supplement threshold switch
130 circulating water pools
131 water pumps
132 steam overpressure explosion-proof equipments
133 air gauges
134 observation windows
135 softened waters
136 boiler supports
137 are wrapped in the water-cooled copper outside ground electrode
138 steam gas collecting tanks
Specific embodiment
Embodiment one
It is the detailed description of the specific embodiment of the invention one referring to given by attached Fig. 1 and 2.It is characterized by: the working gas comprising boiler furnace 100, exhaust collection cover 101, Plasma burning torch 109, the Plasma burning torch 109 is the combination gas for using air and water vapour, Plasma burning torch nozzle 118 is equipped in the bottom of boiler furnace 100, the Plasma burning torch 109 that the nozzle 118 is sprayed directly heats the bottom of boiler, a metal exhaust collection cover 101 is equipped in the periphery of boiler furnace 100 to collect whole tail gas after burning, and the table top of the collecting hood 101 and boiler support 136 uses 127 fixing seal of flange.
It is the detailed description of the specific embodiment of the invention one referring to given by attached Fig. 1 and 2.It is further characterized in that: boiler furnace 100 is the metal can of cylindrical shape, it is made of using carbon steel material.An automatic water compensating valve 117 and water inlet pipe 120 are equipped in the bottom side of boiler furnace 100, it is equipped with the water level penetrated through with it a display 107 and water level sensor 107A of meter in furnace body side, at an upper portion thereof equipped with a steam (vapor) outlet 108 and outlet valve switch 108A, there are also gas gauges 133 and steam pressure explosion-proof apparatus 132 at the top of boiler furnace 100.
It is the detailed description of the specific embodiment of the invention one referring to given by attached Fig. 1 and 2.It is further characterized in that: Plasma burning torch 109 is the hot plasma driven using DC power supply 111, its cathode 114 is connect with the output end cathode of DC power supply 111;The ground electrode 113 of Plasma burning torch is connected and fixed on the platform of a boiler support 136, it constitutes same pole with exhaust collection cover 101 and is grounded,;Boiler furnace 100 is used as a suspension electrode, it and exhaust collection cover 101, rack platform 136, water supply pipe 120 and steam outlet 108 are insulated by insulating materials connecting pipe box 119.
It is the detailed description of the specific embodiment of the invention one referring to given by attached Fig. 1 and 2.It between the cathode 114 and ground electrode 113 of Plasma burning torch, is equipped with insulating materials 112 and insulate, set on the insulating materials there are two air inlet, gas is by two-way air inlet pipe 116, and use rotating inlet mode It enters between two electrodes and is ionized burning.
It is the detailed description of the specific embodiment of the invention one referring to given by attached Fig. 1 and 2.It is further characterized in that: tail gas closed loop system includes that gas pipeline 103, heat exchanger 104, air compressor 105 and ultrasonic atomizer 106 are constituted.Tail gas after the burning of Plasma burning torch 109 is all collected after cover 101 is collected and enters tail gas closed loop system, the arrow direction of its circulating path as fig. 1 indicates: tail gas is introduced into a heat exchanger 104 and carries out heat exchange cooling to tail gas, tail gas after cooling is entered back into an air compressor 105 by after compression pressurization, flow through ultrasonic atomizer 106, and carry aqueous vapor flow back between plasma electrode carry out ionization form Plasma burning torch 109.
It is the detailed description of the specific embodiment of the invention one referring to given by attached Fig. 1 and 2.Circulating water cooling system includes a water supply tank 130, water-cooling groove 135, water pipe 120,121,122,123,124,125 and 126 etc. and water circulating pump 131 and valve 108A, 129 and 115 etc..The flow direction of cooling water referring to Fig.1 in the arrow demarcated be directed toward.
What is provided referring to shown in Fig. 3 is the Plasma burning torch schematic structural cross-sectional view of another water-cooling pattern of the specific embodiment of the invention one.The water-cooling pattern of the plasma generator ground electrode 113 of the structure is the indirect water-cooling mode that 113 lower section of ground electrode is wrapped in using water cooling tube 137.
Embodiment two
The description of the specific embodiment of the invention two.It is characterized by: the boiler form that the boiler can also be penetrated through with a steam gas collecting tank 138 respectively using multiple furnace bodies 100, each furnace body 100 is individually heated using a Plasma burning torch, and independent tail gas closed loop system and hydrologic cycle cooling system is respectively adopted, the steam that multiple furnace bodies generate is concentrated in a gas collecting tank 138, and discharged by the same steam (vapor) outlet 108, it can produce the steam of higher pressure and greater flow.
Air compressor in exhaust gas circulation system of the present invention needs regular check in use, and regular discharge falls the condensation ponding in its air compression tank.

Claims (9)

  1. A kind of plasma boiler of tail gas closed loop ionization combustion includes boiler furnace, Plasma burning torch, exhaust collection cover, tail gas closed loop system, water charging system and hydrologic cycle cooling system etc..The Plasma burning torch is the combustion torch using direct current hot plasma, the working gas that it is used is air and aqueous vapor, boiler furnace is located in right above Plasma burning torch nozzle, the boiler furnace is the suspension electrode with the earth insulation, it is equipped with an exhaust collection cover in the periphery of boiler furnace, the tail gas after Plasma burning is all collected cover collection and enters tail gas closed loop system realization repetition ionization combustion.
  2. The plasma boiler of tail gas closed loop ionization combustion according to claim 1, it is characterized by: boiler furnace is the metal can of cylindrical shape, it is internally provided with a certain amount of water, an automatic water supplement pipe and valve are equipped in the bottom side of furnace body, the water level penetrated through with it a display meter and water level sensor are equipped in furnace body side, it is equipped with a steam (vapor) outlet, valve switch, gas gauge and steam overpressure explosion-proof equipment at an upper portion thereof, boiler furnace is located in right above Plasma burning torch nozzle, and keeps certain gap.
  3. The plasma boiler of tail gas closed loop ionization combustion according to claim 1, it is characterized by: being equipped with exhaust collection cover made of a metal plate in the periphery of boiler furnace, the top of the exhaust collection cover is equipped with a gas outlet, whole after Plasma burning is collected into tail gas closed loop system, realizes that circulating repetition utilizes.
  4. The plasma boiler of tail gas closed loop ionization combustion according to claim 1, it is characterized by: used Plasma burning torch is direct current hot plasma combustion torch, it is made of a cathode and ground electrode, insulating materials is equipped between a cathode and an anode to insulate, a circular spout is equipped on ground electrode, water-cooling channel is respectively equipped on cathode and ground electrode, in normal work, the temperature on ground electrode is held in 500-700 degrees Celsius of range.
  5. According to claim 1 with the plasma boiler of tail gas closed loop ionization combustion described in 4, it is characterized by: the cathode of Plasma burning torch is the cathode end for connecting DC power supply,, ground electrode is to connect the ground electrode output end of power supply and constitute same earthing pole with boiler fixed platform bracket, exhaust collection cover;And boiler furnace is insulated by insulating materials and ground electrode, and a suspension electrode is formed.
  6. According to claim 1 with the plasma boiler of tail gas closed loop ionization combustion described in 4, it is characterized by: the working gas that the Plasma burning torch uses is the mixed gas of air and aqueous vapor, the mixed gas is entered between electrode from the air inlet between electrode on insulating materials, it is ionized to form hot plasma, and sprays the bottom for forming thermal plasma torch and carrying out heating boiler furnace body upwards from the spout of ground electrode.
  7. The plasma boiler of tail gas closed loop ionization combustion according to claim 1, it is characterized by: the tail gas after Plasma burning is into tail gas closed loop system, the system is that the gas that gas gathering mask is collected into first introduces a heat exchanger by pipeline, flow through heat exchanger, it realizes and enters back into after heat exchange is cooling to an air compressor, it enters back into after air compressor compression pressurization to a ultrasonic atomizer, and carry aqueous vapor caused by atomizer and back flow into Plasma burning torch, carry out circulation ionization closed loop burning.
  8. The plasma boiler of tail gas closed loop ionization combustion according to claim 1, it is characterized by: independent circulating water is respectively adopted in the heat exchanger in the cathode of Plasma burning torch, anode and tail gas closed loop system, circulating cooling system includes water pump, water pipe, threshold switch and sink etc..
  9. The plasma boiler of tail gas closed loop ionization combustion according to claim 1, it is characterized by: the form that the plasma boiler of this tail gas closed loop ionization combustion can also be penetrated through with a steam gas collecting tank respectively using multiple furnace bodies, each furnace body is heated with a Plasma burning torch respectively, and corresponding tail gas closed loop system and hydrologic cycle cooling system is respectively adopted, the steam that multiple furnace bodies generate concentrates in a steam gas collecting tank, can produce higher pressure and a greater amount of steam.
CN201580084982.XA 2015-11-30 2015-11-30 The plasma boiler of tail gas closed loop ionization combustion Pending CN108291778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/000831 WO2017091916A1 (en) 2015-11-30 2015-11-30 Plasma boiler with exhaust gas closed-loop ionisation combustion

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CN108291778A true CN108291778A (en) 2018-07-17

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WO (1) WO2017091916A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN111981484A (en) * 2019-05-22 2020-11-24 齐鲁工业大学 Tail gas closed-cycle plasma incineration system

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Publication number Priority date Publication date Assignee Title
CN109262474A (en) * 2018-12-10 2019-01-25 河南理工大学 A kind of device and method preparing ice pellets gas jet using subcooled water
FR3132633B1 (en) 2022-02-14 2024-04-12 Thea Lab Topical composition for its use in the treatment of blepharitis.

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CN104176897A (en) * 2014-08-27 2014-12-03 无锡市杰家化工装备有限公司 Environment-friendly and energy-saving sludge high-temperature carbonization system

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Publication number Priority date Publication date Assignee Title
JPH06265134A (en) * 1993-03-11 1994-09-20 Kansai Electric Power Co Inc:The Apparatus and method for recovering value in plasma melting furnace
CA2813062A1 (en) * 2010-09-24 2012-03-29 James Charles Juranitch Renewable combined cycle low turbine boost
CN102199680A (en) * 2011-04-19 2011-09-28 黄道兵 Cyclical low-carbon metallurgical method with tail gas conversion by plasma
CN203053206U (en) * 2012-11-19 2013-07-10 北京环宇冠川等离子技术有限公司 Tailing smelting furnace with plasma torch heating system
CN104176897A (en) * 2014-08-27 2014-12-03 无锡市杰家化工装备有限公司 Environment-friendly and energy-saving sludge high-temperature carbonization system

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Publication number Priority date Publication date Assignee Title
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