CN104531171B - A kind of high-efficient energy-saving environment friendly retort - Google Patents
A kind of high-efficient energy-saving environment friendly retort Download PDFInfo
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- CN104531171B CN104531171B CN201410837250.0A CN201410837250A CN104531171B CN 104531171 B CN104531171 B CN 104531171B CN 201410837250 A CN201410837250 A CN 201410837250A CN 104531171 B CN104531171 B CN 104531171B
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- storehouse
- rotating cylinder
- discharging device
- charing
- retort
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- 238000007599 discharging Methods 0.000 claims abstract description 40
- 239000011796 hollow space material Substances 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 17
- 239000005539 carbonized material Substances 0.000 claims description 15
- 238000003763 carbonization Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000005292 vacuum distillation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000013021 overheating Methods 0.000 claims description 4
- 238000004227 thermal cracking Methods 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/10—Rotary retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Coke Industry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a kind of high-efficient energy-saving environment friendly retorts, including blanking machine, bracket, rotating cylinder, rotating device and discharging device, the rotating cylinder is tiltedly mounted on the bracket in a manner of right low left high, the rotating device drives the rotating cylinder to rotate by rolling ring, the left end of the rotating cylinder is provided with blanking machine, right end is provided with discharging device, the hollow space of the rotating cylinder is flue storehouse, several charing storehouses are evenly arranged on the inside of the barrel of the rotating cylinder, the blanking machine bottom end is provided with blanking device, the blanking device is connect with charing storehouse one end of the rotating cylinder lower left quarter, the other end in the charing storehouse connects the discharging device；Hollow space of the flue storehouse by air inlet pipe through the discharging device is connect with wind-mixer, and the hollow space of the blanking machine is run through in the flue storehouse by escape pipe；The top of the discharging device is provided with induced duct, and the outer end of induced duct is connect with the first air-introduced machine.
Description
Technical field
The present invention relates to a kind of active carbon preparation facilities field, in particular to a kind of high-efficient energy-saving environment friendly retort.
Background technique
Coal carbonization is carried out using internal heat type retort, it is more demanding to feed coal, it can only be to the lump coal of 50mm-150mm
It is carbonized, is affected by raw material.And there are a large amount of tar and sewage to generate in production process, the carbonized material water content produced
Height influences active carbon quality.Present carbonized material production is a kind of production of extensive style, and the carbonized material quality produced is lower,
Due to there is air to enter the phenomenon that causing burning fixed carbon in carbonization process, Char Yield was not only reduced but also had affected carbonized material
Quality, while the high-temperature fuel gas generated in carbonization process does not make full use of, and causes the waste of the energy and the influence to environment.
Carbon monoxide, hydrogen and hydro carbons such as methane that material releases when charing etc. both pollutes air and a kind of waste of the energy, has
Need to build combustion chamber to solve to carbonize generated exhaust gas, this increases the capital expenditure of enterprise from another point of view.Working as
Preceding low temperature distillation industry smalls can not comprehensively utilize, the background that product quality is not ideal enough, environmental issue not yet solves at all under,
Urgently push a kind of applied widely, reliable and stable equipment to entire low-disintegration coal and comprehensively utilize industry, is produced in low-disintegration coal
Area's investment external-heating revolving low-temperature carbonization system can promote enterprise to obtain rich economic benefit, comprehensively utilize for corporate resources
Open completely new approach.
Summary of the invention
The purpose of the present invention is to provide a kind of high-efficient energy-saving environment friendly retorts of recyclable heat source.This retort behaviour
Make it is easy, can continuous production, save the energy, the carbonized material stable product quality of production.
To achieve the above object, high-efficient energy-saving environment friendly retort provided by the invention, including blanking machine, bracket, revolving drum
Body, rotating device and discharging device, the rotating cylinder are tiltedly mounted on the bracket in a manner of right low left high, and described turn
Dynamic device drives the rotating cylinder to rotate by rolling ring, and the left end of the rotating cylinder is provided with blanking machine, and right end is provided with
The barrel inside of discharging device, the rotating cylinder is evenly arranged with several charing storehouses, and the hollow space of the rotating cylinder is
Flue storehouse；The blanking machine bottom end is provided with blanking device, charing storehouse one end of the blanking device and the rotating cylinder lower left quarter
The other end of connection, the charing storehouse connects the discharging device；The discharging device is run through by air inlet pipe in the flue storehouse
Hollow space connect with wind-mixer, the flue storehouse by escape pipe run through the blanking machine hollow space；The discharging
The top of device is provided with induced duct, and the outer end of induced duct is connect with the first air-introduced machine.
Wherein, it is preferred that be provided with several reinforcing ribs in the flue storehouse, be used to support the fixed charing storehouse, protect
Expanding with heat and contract with cold for card charing storehouse is free to slide.
Preferably, first sealing device is provided between the flue storehouse and the blanking machine.
Preferably, the second sealing device is set between the flue storehouse and the discharging device.
Preferably, the bottom of the discharging device is provided with cooler.
Preferably, nearly discharging device end is provided with the second air-introduced machine in the wind-mixer, is provided with far from discharging device end
Burner.
Preferably, the inner wall of the rotating cylinder is provided with flame retardant coating, more preferably fire brick layer.
Preferably, rolling ring backing plate is provided between the rolling ring and the rotating cylinder.
Compared with prior art, the present invention has the advantage that：
1. raw material is applied widely：According to product final use, high-efficient energy-saving environment friendly retort of the invention be can handle
50mm raw coal below, including 5mm or less smalls.Feed coal powder is sufficient, and the ability to ward off risks is strong.
2. apparatus of the present invention flexible operation, elasticity are big, can be according to the different instant adjusting process parameter changes of market demands
Product quality.Feed coal produces carbonized material, discord air contact, Du through Overheating Treatment, low temperature distillation, thermal cracking in charing storehouse
The burning of fixed carbon absolutely is conducive to produce the carbonized material that yield is high, quality is good.
3. high-efficient energy-saving environment friendly retort of the invention can both efficiently control each due to using residual-heat utilization technology
The temperature of section, and the intracorporal impurity of High Temperature Gas can be prevented and entered in carbonized material, be conducive to the carbonized material for producing high-quality.By
It is energy saving in recycling for high-temperature residual heat, reduce the generation of pernicious gas and trade effluent, reduces corresponding improvement
Device and expense.
4. device capbility is big, annual output is greater than upright furnace.Processing cost is low, is the 50% of traditional internal heat type retort.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings：
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is A-A cross-sectional view of the present invention；
Fig. 3 is B-B cross-sectional view of the present invention；
Fig. 4 is C-C cross-sectional view of the present invention.
In figure：1, blanking machine, 2, bracket, 3, rotating cylinder, 4, rotating device, 5, discharging device, 6, flue storehouse, 7, charing
Storehouse, 8, blanking device, 9, air inlet pipe, 10, escape pipe, 11, induced duct, the 12, first air-introduced machine, 13, reinforcing rib, the 14, first sealing
Device, the 15, second sealing device, 16, cooler, the 17, second air-introduced machine, 18, burner, 19, fire brick layer, 20 wind-mixers.
Specific embodiment
Below in conjunction with the embodiment and attached drawing in the present invention, technical solution in the embodiment of the present invention carry out it is clear,
It is fully described by, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
As shown, the high-efficient energy-saving environment friendly retort of the present embodiment, including blanking machine 1, bracket 2, rotating cylinder 3, turn
Dynamic device 4 and discharging device 5, rotating cylinder 3 are mounted on bracket 2, and bracket 2 is set as two, and respectively front wheel frame is with after
Turning rolls.The height of front wheel frame is higher than rear roller frame, and rotating cylinder 3 is made to tilt installation in a manner of right low left high.Rotation dress
Set 4 by rolling ring drive rotating cylinder 3 rotate, rolling ring backing plate is provided between rolling ring and rotating cylinder 3, make rotating cylinder 3 with
The frictional force of rolling ring increases, and is more advantageous to effective rotation of rotating cylinder 3.
The right end of rotating cylinder 3 is provided with discharging device 5, and left end is provided with blanking machine 1, and 1 bottom end of blanking machine is equipped with down
Glassware 8.The inner sidewall of rotating cylinder 3 is provided with fire brick layer 19, and several charing storehouses 7 are evenly arranged on the inside of fire brick layer 19,
Hollow space is flue storehouse 6.7 one end of charing storehouse of 3 lower left quarter of rotating cylinder is connect with blanking device 8, the other end and discharging device 5
Connection.Hollow space of the flue storehouse 6 by air inlet pipe 9 through discharging device 5 is connect with wind-mixer 20, and flue storehouse 6 passes through outlet
Flue gas is discharged through the hollow space of blanking machine 1 for pipe 10；The top of discharging device 5 is provided with induced duct 11, induced duct 11
Outer end is connect with the first air-introduced machine 12.
Several reinforcing ribs 13 are provided in flue storehouse 6, since charing storehouse 7 is influenced to generate different degrees of expansion by high temperature
Deformation.The fixed charing storehouse 7 of the movable support of reinforcing rib 13.
To guarantee the airtightness between flue storehouse 6 and air inlet pipe 9 and escape pipe 10, it is arranged between flue storehouse 6 and blanking machine 1
There is first sealing device 14, the second sealing device 15 is provided between discharging device 5.
The bottom of discharging device 5 is provided with cooler 16, makes to be discharged after pyrocarbon material is cooling.
5 end of nearly discharging device is provided with the second air-introduced machine 17 in wind-mixer 20, and 5 end of discharging device is provided with burner
18.In this retort initialization, since the air themperature of entrance is low, energy needed for not being able to satisfy charing, it is therefore desirable to
Burner 18 is opened, under the action of the second air-introduced machine 17, Cryogenic air is burnt into high temperature air and enters flue through air inlet pipe 9
The supply of storehouse 6 charing 7 energy of storehouse.
Raw material from blanking machine 1 enter retort, through blanking device 8 enter retort charing storehouse 7 in, by gravity to
5 direction of discharging device falls.The 7 Discrete control temperature of charing storehouse of retort heats, and is heated slowly to 550 DEG C -600 from room temperature
DEG C, the carbonized material that raw material is produced after Overheating Treatment, low temperature distillation, thermal cracking in the charing storehouse 7 of retort enters discharging
Device 5, free-falling are discharged after cooler 16 is cooling；The carbonization gas that raw material volatilizes in low temperature distillation process passes through first
The control of air-introduced machine 12 and raw material move in the same direction in charing storehouse 7, and carbonization gas enters discharging device 5, through drawing for 5 top of discharging device
Air hose 11 is discharged.Enter high-temperature incinerator after discharge to burn, the high-temperature gas a part generated after burning is entered by air inlet pipe 9
The flue storehouse 6 of retort reaches low temperature distillation effect with raw material reverse movement indirect heating raw material.High-temperature gas is from air inlet pipe 9
Into, it is gradually heated to the raw material in charing storehouse 7 through flue storehouse 6, is reduced to cryogenic gas discharge retort in 10 temperature of escape pipe,
Then it is discharged after desulfurizing tower under the action of air-introduced machine.
Other high-temperature gases can enter drying oven for drying material by negative pressure, or enter heat exchanger, heat and soften water
Boiler of feeding uses, or enters waste heat boiler and generate steam for using.
Raw material carries out indirect heating in the charing storehouse of retort of the present invention, through the high-temperature gas after burning, through overheating
Processing, low temperature distillation, thermal cracking produce carbonized material, and discord air contact has prevented the burning of fixed carbon, has been conducive to produce
The carbonized material that rate is high, quality is good.Material movement direction and high-temperature gas are flowed contrary and are respectively run by the track of oneself,
It does not contact completely.Each section of temperature can have not only been efficiently controlled in this way, but also can be prevented the intracorporal impurity of High Temperature Gas and be entered charing
In material, the carbonized material ash content produced is low, and intensity is big.The volatile matter of carbonized material is moderate, and heaping weight is high, and quality is good.Charcoal of the present invention
The thermal energy that the carbonization gas generated when changing furnace using raw material charing destructive distillation is generated through high temperature incineration provides heat source for carbonization process, extra
Thermal energy drying material and by waste heat boiler generate steam for other use.Entire low temperature distillation process is not necessarily to supplement fuel,
Energy consumption is reduced, discharge is reduced, is really achieved energy conservation and environmental protection.
Above embodiment, which is intended to illustrate the present invention, to be realized or use for professional and technical personnel in the field, to above-mentioned
Embodiment, which is modified, will be readily apparent to those skilled in the art, therefore the present invention includes but is not limited to
Above embodiment, it is any to meet the claims or specification description, meet with principles disclosed herein and novelty,
The method of inventive features, technique, product, fall within the scope of protection of the present invention.
Claims (3)
1. a kind of high-efficient energy-saving environment friendly retort, the retort includes blanking machine, bracket, rotating cylinder, rotating device and goes out
Expect that device, the rotating cylinder are tiltedly mounted on the bracket in a manner of right low left high, the rotating device passes through rolling ring
The rotating cylinder is driven to rotate, the left end of the rotating cylinder is provided with blanking machine, and right end is provided with discharging device, feature
It is, several charing storehouses are evenly arranged on the inside of the barrel of the rotating cylinder, and the hollow space of the rotating cylinder is flue
Storehouse is provided with first sealing device between the flue storehouse and the blanking machine；The blanking machine bottom end is provided with blanking device, institute
It states blanking device to connect with charing storehouse one end of the rotating cylinder lower left quarter, the other end in the charing storehouse connects the discharging dress
It sets；Hollow space of the flue storehouse by air inlet pipe through the discharging device is connect with a wind-mixer, and the flue storehouse is logical
The hollow space that escape pipe runs through the blanking machine is crossed, the second sealing dress is provided between the flue storehouse and the discharging device
It sets；The top of the discharging device is provided with induced duct, and the outer end of the induced duct is connect with one first air-introduced machine；
Raw material enters retort from blanking machine, enters in the charing storehouse of retort through blanking device, fills by gravity to discharging
Direction whereabouts is set, the charing storehouse Discrete control temperature heating of retort is heated slowly to 550 DEG C -600 DEG C from room temperature, raw material exists
The carbonized material produced after Overheating Treatment, low temperature distillation, thermal cracking in the charing storehouse of retort enters discharging device, under freedom
It falls after cooler is cooling and is discharged；The carbonization gas that raw material volatilizes in low temperature distillation process passes through the control of the first air-introduced machine and original
Material moves in the same direction in charing storehouse, and carbonization gas enters discharging device, the induced duct discharge through discharging device top；Enter after discharge
High-temperature incinerator burns, and the high-temperature gas a part generated after burning enters the flue storehouse of retort by air inlet pipe, with raw material
Reverse movement indirect heating raw material, reaches low temperature distillation effect；
High-temperature gas gradually heats the raw material in the charing storehouse from the air inlet pipe, through the flue storehouse, in the outlet
Tube temperature degree is reduced to cryogenic gas discharge retort, is then discharged after desulfurizing tower under the action of air-introduced machine；
Other high-temperature gases can enter drying oven for drying material by negative pressure, or enter heat exchanger, heat and soften water for pot
Furnace uses, or enters waste heat boiler and generate steam for using；
The nearly discharging device end is provided with the second air-introduced machine in the wind-mixer, and the discharging device end is provided with burning
Device；
Several reinforcing ribs are provided in the flue storehouse, are used to support the fixed charing storehouse, reinforcing rib being capable of movable supporting
Fixed charing storehouse；
The bottom of the discharging device is provided with cooler；
The inner wall of the rotating cylinder is provided with flame retardant coating.
2. high-efficient energy-saving environment friendly retort according to claim 1, which is characterized in that the flame retardant coating is fire brick layer.
3. high-efficient energy-saving environment friendly retort according to claim 1, which is characterized in that the rolling ring and the rotating cylinder
Between be provided with rolling ring backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837250.0A CN104531171B (en) | 2014-12-30 | 2014-12-30 | A kind of high-efficient energy-saving environment friendly retort |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837250.0A CN104531171B (en) | 2014-12-30 | 2014-12-30 | A kind of high-efficient energy-saving environment friendly retort |
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| Publication Number | Publication Date |
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| CN104531171A CN104531171A (en) | 2015-04-22 |
| CN104531171B true CN104531171B (en) | 2018-11-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101828844B1 (en) | 2017-07-12 | 2018-02-13 | (주)에스제이인더스트리 | Carbonized fuel manufacturing system |
| CN107990741B (en) * | 2017-11-29 | 2019-07-19 | 贺守印 | A kind of retort UTILIZATION OF VESIDUAL HEAT IN temperature regulating device and its temperature control method |
| CN114538436A (en) * | 2022-03-10 | 2022-05-27 | 马鞍山钢铁股份有限公司 | Preparation method of efficient low-reaction-heat type desulfurization and denitrification activated carbon |
| CN114873594A (en) * | 2022-05-06 | 2022-08-09 | 山东海普欧环保设备科技有限公司 | Method for preparing activated carbon from sludge |
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| CN102092706B (en) * | 2010-12-13 | 2013-03-20 | 淮北市协力重型机器有限责任公司 | External-heating energy-saving and environment friendly rotary carbonization furnace |
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|---|---|---|---|---|
| JP2005016908A (en) * | 2003-06-30 | 2005-01-20 | Yamato Sanko Seisakusho:Kk | Indirect heating type horizontal rotary treatment device |
| CN101857806A (en) * | 2010-06-11 | 2010-10-13 | 宁夏宝塔石化集团有限公司 | Multi-tube external-heat fume reverse extraction rotary carbide furnace |
| CN101899311A (en) * | 2010-07-22 | 2010-12-01 | 肖国雄 | Carbonization furnace for producing biomass charcoal |
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| Publication number | Publication date |
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| CN104531171A (en) | 2015-04-22 |
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