CN101497802A - Method for controlling coal gas interior heat low temperature dry distillation temperature and improving quality of coal gas - Google Patents
Method for controlling coal gas interior heat low temperature dry distillation temperature and improving quality of coal gas Download PDFInfo
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Abstract
The invention relates to a coal gas internally heated low temperature carbonization temperature control and coal gas extracting method which is used for preparing oxygenized air by mixing commercially pure oxygen and air based on oxygen enrichment carbonization, the oxygenized air is combusted with coal gas in a burner outside a furnace to generate high temperature waste gas which is used as a heat source needed by coal carbonization, the oxygenized air and the coal gas are blown in a carbonization furnace after being humidified, high temperature recycle gas between 760 DEG C and 850 DEG C according to the requirement of coal low temperature retorting is formed by the humidified moisture evaporation and the decomposition and heat absorption, and the supplying amount of cold coal gas is reduced; meanwhile, the humidified furnace gas generates hydrogen because of the water gas reaction in the carbonization furnace, thereby improving the hydrogen content in the coal gas; one part of produced high heat coal gas is refluxed to the burner to continuously provide the coal gas needed by combusting with the oxygenized air after the produced high heat coal gas is separated from tar oil by a tar oil separating and collecting device, and the left part of the produced high heat coal gas is used for the subsequent handling and the chemical use of coal gas generation, and the like. The invention has simple process equipment and convenient operation, is favorable to the multipurpose use to coal, and reduces the pollution of the waste gas to the environment.
Description
Technical field
The present invention relates to Coal Chemical Industry, new forms of energy and environmental protection field.Relate to a kind of method for destructive distillation, particularly a kind of coal gas internal heating low-temperature cracking temperature control and improving quality of coal gas method.
Background technology
Northern China some areas rich coal resources, ature of coal is good, belong to low ash, low-sulfur, low-phosphorous, high volatile weakly glue, non-caking coal.Utilizing this mill coal low-temperature pyrolysis to refine blue charcoal or semicoke is that local at present main coal transforms industry.Comparing with the high-quality steam coal, can realize the comprehensive utilization of coal by certain distillation process, is a developing direction.Yet because its destructive distillation small scale, coke quality are poor, the energy consumption height, benefit is low, environmental pollution is serious, and especially the low-heat value gas of output is difficult to utilize, and directly influences the development of the sector.Try to explore new distillation process, the comprehensive utilization of resources technology of exploitation retort process is significant to the sector, place and even national society and sustainable economic development.
For Shan of China, Shanxi, peaceful, cover geographic blue charcoal manufacturing enterprise, hot pyrogenous mode in main at present the employing, promptly adopted the mode of air and excessive gas-fired heating, combustion exhaust has been sneaked in the coal gas, both reduced the calorific value of coal gas, also increase the processing power of purification system, and be unfavorable for comprehensive utilization.Adopting the oxygen enrichment destructive distillation is effective measure that address this problem, yet, how to guarantee that the control of internal heat type low-temperature dry distillation temperature just becomes a very critical problem.For the temperature control of low-temperature pyrolysis, mainly adopt following approach at present: the one, adopt air-breathing, utilize airborne nitrogen heat absorption, and suitably increase the amount of allocating into of cooled coal gas; The 2nd, under excess oxygen, adopt the method for the amount of allocating into that increases considerably cooled coal gas, the Chinese patent that this method has been applied in earlier stage the applicant (application number: 200810017769.9, publication number: propose in application documents CN 101250419A).Above-mentioned first kind of approach and means is simple and easy to do, but exists caloric power of gas low, the big problem of comprehensive utilization difficulty.By further research, though the applicant finds second kind of approach and can effectively overcome the deficiency of first method, it is big to have the coal gas internal circulating load, the characteristics that the coal gas quantum of output is relatively low, but the continued access chemical industry not necessarily is fit to the requirement of chemical industry dependent program to coal gas behind coal gas after the destructive distillation.Therefore seeking a kind ofly can either effectively provide a large amount of coal gas, can reduce the content of nitrogen in the coal gas again, can guarantee simultaneously coal is realized low-temperature pyrolysis, effectively the pyrolysis temperature of hot stove in the control, and the content of hydrogen in the raising coal gas is one and remains the problem exploring and solve.
Summary of the invention
Defective or deficiency at above-mentioned prior art existence, the objective of the invention is to, a kind of coal gas internal heating low-temperature cracking temperature control and improving quality of coal gas method are provided, this method is with gas oxygen-enriched burning, cooperate with cooled coal gas and water vapor simultaneously, by the cooling performance of water-gas reaction, guarantee the temperature requirement of low-temperature pyrolysis, improve gas quality simultaneously.
Purpose of the present invention can realize by following technical measures:
A kind of coal gas internal heating low-temperature cracking temperature control and improving quality of coal gas method is characterized in that, comprise the steps:
1) be main raw material with Shenmu County's butt raw coal, being prepared into oxygen content with industrial pure oxygen and air mixed is that 60%-100% oxygen-rich air produces high-temp waste gas as the required basic thermal source of the dry distillation of coal with gas-fired in the stove outer burner;
2) to blasting gas retort behind oxygen-rich air and the coal gas humidification, utilize the moisture evaporation and branch heat of desorption of humidification, realize adjusting to temperature, reduce the cooled coal gas amount of allocating into, final 760 ℃～850 ℃ high temperature circulation gases that meet coal low-temperature pyrolysis temperature requirement that form; Simultaneously, the furnace gas of humidification because water-gas reaction produces hydrogen, improves the hydrogen richness in the coal gas in gas retort;
3) will meet the high temperature circulation gas of coal low-temperature pyrolysis temperature requirement, feed internal heat type coal low-temperature pyrolysis stove, coal in the stove is carried out non-oxidation or weak oxide heating, the high heating value gas of output is by behind the tar separation collecting device separates tar, the part pump around circuit continues to provide and the required coal gas of oxygen-rich air burning in burner, and rest parts coal gas uses for subsequent handling or gas to generate electricity.
Above-mentionedly oxygen-rich air and gas-fired are produced the mixed high temperature circulation gas of destructive distillation cooled coal gas behind high-temp waste gas and the separating tar carry out humidification and adopt water vapor or water smoke air blast (or coal gas) humidification by burner, perhaps, perhaps adopt both combinations to the destructive distillation cooling section humidification of directly spraying water.
Wherein, the air blast humidification is that the coal gas behind oxygen-rich air or pure oxygen and the humidification is sprayed into burner by burner, enters combustion chambers burn then, and the high-temperature flue gas of generation enters the gas retort retort section, and coal is carried out destructive distillation.
Directly the water spray humidification adopts the distribution of atomizing nozzle multiple spot directly to spray water to cooling section, and injection flow rate is set according to the temperature of dry distillation of coal needs.
Method of the present invention is applicable to all kinds of internal heat type coal low-temperature pyrolysis stoves, and promptly high-temperature medium is by the coal seam in the stove, and the heating raw coal is realized pyrogenous process.Method of the present invention can improve the hydrogen richness of coal gas in the nitrogen content that effectively reduces in the coal gas, help the utilization of the chemical industry direction of coal gas.Compare simultaneously that to have a processing unit simple, be convenient to operation, be beneficial to comprehensive utilization, reduce the pollution of waste gas environment to coal with the method that coal gas is produced in present low-temperature pyrolysis.
Meanwhile, a supporting technology of hot oxygen-enriched low temperature dry distillation in method of the present invention can be used as, for the oxygen enrichment destructive distillation provides a kind of efficient temperature regulating measure, hot destructive distillation heat exchange efficiency height in helping bringing into play, the characteristics that production efficiency is high are with low-temperature pyrolysis with produce coal gas and organically combine.
Description of drawings
Fig. 1 is the method flow diagram that the present invention is suitable for.
The present invention is described in further detail below in conjunction with embodiment that accompanying drawing and contriver provide.
Embodiment
Referring to Fig. 1, coal gas internal heating low-temperature cracking temperature control of the present invention and improving quality of coal gas method specifically comprise the steps:
1, be main raw material with Shenmu County's butt raw coal, being prepared into oxygen content with industrial pure oxygen (industrial pure oxygen, 99.0%) and air mixed is that 60%～100% oxygen-rich air produces high-temp waste gas as the required basic thermal source of the dry distillation of coal with gas-fired in the stove outer burner.
2, to blasting gas retort behind oxygen-rich air and the coal gas humidification, utilize the moisture evaporation and branch heat of desorption of humidification, realize adjusting to temperature, reduce the cooled coal gas amount of allocating into, final 760 ℃～850 ℃ high temperature circulation gases that meet coal low-temperature pyrolysis temperature requirement that form; Simultaneously, the furnace gas of humidification because water-gas reaction produces hydrogen, improves the hydrogen richness in the coal gas in gas retort.
The high temperature circulation gas feeding internal heat type coal low-temperature pyrolysis stove that 3, will meet coal low-temperature pyrolysis temperature requirement, coal in the stove is carried out non-oxidation (or weak oxide) heating, the high heating value gas of output is by behind the tar separation collecting device separates tar, the part pump around circuit continues to provide and the required coal gas of oxygen-rich air burning in burner, and rest parts coal gas uses for chemical industry such as subsequent handling or gas to generate electricity.
The mixed high temperature circulation gas of destructive distillation cooled coal gas behind oxygen-rich air and gas-fired generation high-temp waste gas and the separating tar is carried out humidification method, humidification adopts the form of water vapor or water smoke, can be by the air blast humidification of burner, perhaps, perhaps adopt both combinations to the destructive distillation cooling section humidification of directly spraying water.
Dotted line is selectable another technical scheme of humidification among Fig. 1, also can adopt simultaneously.
The know-why that the method for invention adopts is:
Oxygen-enriched combustion technology (oxygen content 60%～100%) promptly produces high-temp waste gas as the required basic thermal source of the dry distillation of coal with oxygen enrichment or pure oxygen and gas-fired, by humidification in combustion air or coal gas, realization is to back dry distillation medium (destructive distillation gas in the stove) temperature controlling of burning, formation meets the high temperature circulation gas (760 ℃～850 ℃ of temperature) of coal low-temperature pyrolysis temperature requirement, coal in the stove is carried out non-oxidation (or weak oxide) heating, realize the no combustion cycle of cyclic part coal gas.The coal gas of humidification because water-gas reaction, produces hydrogen in stove, for the comprehensive utilization of process coal gas especially lays the foundation as the utilization of downstream Chemicals etc.
Main points of the present invention comprise three aspects: the one and the oxygen-enriched combustion technology combination, utilize the temperature of humidification control burning back gas, and make it to meet the temperature condition of low-temperature pyrolysis; The 2nd, utilize water-gas reaction, improve hydrogen richness in the coal gas; The 3rd, the high quality coal gas of output helps efficiently utilizing docking of approach with chemical industry etc.; The 4th, need not change existing gas retort body construction, can adjust flexibly according to the gas retort process need.
Humidification can be arranged flexibly in conjunction with different process and equipment characteristic.For example:
(1) air blast humidification: the coal gas behind oxygen enrichment or pure oxygen and the humidification sprays into combustion chambers burn by burner, and the high-temperature flue gas of generation enters the gas retort retort section, and coal is carried out destructive distillation.Can realize temperature retort section temperature controlling by humidification (steam) amount in the coal gas.Attemperation can need (680 ℃-910 ℃) to set according to the coal destructive distillation.The high heating value gas of output is behind separating tar, and burning is done in the part circulation or in destructive distillation gas, part is used for the subsequent handling chemical industry.
(2) humidification of directly spraying water.Vertical low-temperature pyrolysis stove can adopt the mode of directly spraying water to cooling section, and water vapor is up, enters retort section, realizes the dry distillation area temperature controlling.
That method of the present invention also can be used for is newly-built, reconstruction internal heat type low-temperature coal carbonization enterprise.
Below be the specific embodiment that the contriver provides, need to prove, the invention is not restricted to these embodiment.
Embodiment 1: the blue charcoal of low-temperature pyrolysis of year 2000000 tons of coals of processing concentrates the manufacturing district to use
(1) basic condition:
3 of the blue charcoal factories of 600,000 tons of year processing poweies, one of the blue carbon factory of 200,000 tons of year processing poweies, adopting vertical side's stove is basic production equipment, coke ratio 1.65:1.Tar yield about 8% (Shenmu County's butt raw coal is a benchmark).After the oxygen enrichment destructive distillation was transformed, system was provided with each pressure and flow detection and setting device along separate routes, and combustion tail gas and go into stove dry distillation medium temperature-detecting device is realized adjusting and control to process.Adopt 100% oxygen enrichment than destructive distillation, combustion-supporting pure oxygen (industrial pure oxygen, the 99.0%) consumption of using is about 52～58m
3/ t
Blue charcoal, burning is about 51～55m with the gas consumption amount
3/ t
Blue charcoal, other allocates cooled coal gas amount 250～270m into
3/ t
Blue charcoal, mixture temperature reaches 680-750 ℃.Furnace temperature is regulated main by cooled coal gas amount of allocating into and coal gas oxygen ratio.Surplus gas amount 210m
3/ t
Blue charcoalWith reference to gas composition be:
With reference to gas composition be: H
2: 40.95%, CO:25.04%, CO
2: 12.46%, CH
4: 14.65%, nitrogen: 5.85%.Caloric power of gas 13182kJ/m
3
(2) application mode
Should adopt air blast humidification and cooling section water spray humidification bonded mode that pyrolysis temperature is controlled with example.
The air blast humidification is undertaken by the mode of humidification in the coal gas, adopts atomizing nozzle, sprays into pipe to the coal gas of burner and sprays into water, and the humidification amount is 30g/m
3 Coal gas, amount to 9kg/t
Blue charcoalCoal gas behind oxygen and the humidification sprays into combustion chamber mixed firing by burner, and the high-temperature flue gas of generation enters the gas retort retort section, and coal is carried out destructive distillation.Suitable humidification amount can prevent that the temperature of oxygen-enriched combusting generation is too high.
The mode that cooling section water spray humidification adopts special atomizing nozzle multiple spot to distribute and directly spray water to cooling section, water vapor is up, enters retort section, realizes the dry distillation area temperature controlling.Injection flow rate is amounted to 18kg/t
Blue charcoalIn order to prevent the too high influence to retort process of temperature, the mixed gas that up water vapor and water-gas reaction form is through distribution device, and the gas with the burning generation mixes as early as possible, realizes the adjusting to pyrolysis temperature.
(3) application result
Produce blue charcoal per ton with addition of cooling coal gas amount be reduced to 60～70m
3/ t
Blue charcoal, the surplus gas amount is brought up to 480m
3/ t
Blue charcoal, caloric power of gas reaches (13400-14220) kJ/Nm than slightly improving originally
3In addition, because hydrogen effective constituent improves, possesses the condition of follow-up chemical utilization.With reference to gas composition be: H
2: 48.95%, CO:20.04%, CO
2: 10.46%, CH
4: 13.95%, nitrogen: 4.85%.Caloric power of gas: 14182kJ/m
3
Retort process is stable, and working of a furnace regulation and control are convenient.
Embodiment 2: produce the application of 600,000 tons blue charcoal factory per year
(1) basic condition
Using vertical side's stove is basic production equipment, coke ratio 1.67:1.Blue charcoal is produced the combustion-supporting gas oxygen-rich air of stove, and oxygen content 80% adopts industrial pure oxygen (industrial pure oxygen, 99.0%) and air mixed, and the oxygen depletion amount is about 48～51m
3/ t
Blue charcoal, air is 16～20m
3/ t
Blue charcoalThe gas consumption amount is about 63～68m
3/ t
Blue charcoal, other allocates cooled coal gas amount 230～245m into
3/ t
Blue charcoalSurplus gas amount 310m
3/ t
Blue charcoalWith reference to gas composition be:
H
2: 39.05%, CO:23.04%, CO
2: 12.06%, CH
4: 12.55%, nitrogen: 8.85%.Caloric power of gas: 13102kJ/m
3
(2) application mode
Adopt air blast humidification and cooling section water spray humidification bonded mode that pyrolysis temperature is controlled.
The air blast humidification is undertaken by the mode of humidification in the coal gas (steam), adopts atomizing nozzle, sprays into pipe to the coal gas of burner and sprays into water, humidification amount 8kg/t
Blue charcoalCoal gas behind oxygen enrichment or pure oxygen and the humidification sprays into combustion chambers burn by burner, and the high-temperature flue gas of generation enters the gas retort retort section, and coal is carried out destructive distillation.
Directly the water spray humidification adopts the mode that special atomizing nozzle multiple spot distribution is directly sprayed water to cooling section, and water vapor is up, enters retort section, realizes the dry distillation area temperature controlling.Injection flow rate is amounted to 16kg/t
Blue charcoal
(3) application result
Produce blue charcoal per ton with addition of cooling coal gas amount by 230 original～245m
3/ t
Blue charcoalBe reduced to 60～70m
3/ t
Blue charcoal, the surplus gas amount is by original 310m
3/ t
Blue charcoalBring up to 500m
3/ t
Blue charcoal, caloric power of gas reaches 13400-13920kJ/Nm than slightly improving originally
3In addition, because hydrogen effective constituent improves, possesses the condition of follow-up chemical utilization.As follows with reference to gas composition:
With reference to gas composition be: H
2: 42.51%, CO:21.04%, CO
2: 11.06%, CH
4: 14.55%, nitrogen: 8.05%.Caloric power of gas: 13402kJ/m
3
The process working of a furnace is stable, regulation and control are convenient.
Embodiment 3 produces the application of 600,000 tons blue charcoal factory per year
(1) basic condition
Using vertical side's stove is basic production equipment, coke ratio 1.67:1.Tar yield about 7.8% (Shenmu County's butt raw coal is a benchmark).Should be with in the practice, blue charcoal is produced the combustion-supporting gas oxygen-rich air of stove, and oxygen content 60% adopts industrial pure oxygen (industrial pure oxygen, 99.0%) and air mixed to make, and the oxygen depletion amount is about 43～46m
3/ t
Blue charcoal, air is 42～48m
3/ t
Blue charcoalBurning coal gas adopts the destructive distillation cooled coal gas behind the separating tar, and consumption is about 83～90m
3/ t
Blue charcoal, other allocates cooled coal gas amount 190～200m into
3/ t
Blue charcoalSurplus gas amount 360～380m
3/ t
Blue charcoal
H
234.32%, CO 22.53%, CO
211.87%, CH
49.10%, nitrogen: 21.68%.Caloric power of gas: 11058kJ/m
3
(2) application mode
The mode of cooling section water spray humidification is controlled pyrolysis temperature.
Directly the water spray humidification adopts the mode that special atomizing nozzle multiple spot distribution is directly sprayed water to cooling section, and water vapor is up, enters retort section, realizes the dry distillation area temperature controlling.Injection flow rate is amounted to 22kg/t
Blue charcoal
(3) application result
Produce blue charcoal per ton with addition of cooling coal gas amount by 190 original～200m
3/ t
Blue charcoalBe reduced to 60～65m
3/ t
Blue charcoal, the surplus gas amount is by 360 original～380m
3/ t
Blue charcoalBring up to 560m
3/ t
Blue charcoal, caloric power of gas was suitable substantially originally, was 11018～12152kJ/Nm
3In addition, because hydrogen effective constituent improves, possesses the condition of follow-up chemical utilization.As follows with reference to gas composition:
H
2: 37.42%, CO:21.83%, CO
2: 11.37%, CH
4: 7.82%, nitrogen: 20.98%.Caloric power of gas: 11240kJ/m
3
Retort process is stable, and working of a furnace regulation and control are convenient.
Embodiment 4 produces 600000 tons blue charcoal factory oxygen enrichment destructive distillation per year
(1) basic condition
Using vertical side's stove is basic production equipment, and oxygen enrichment is than the air-breathing that is 30%, coke ratio 1.68:1.About tar yield 7.8%, it is 180m that blue charcoal is produced stove oxygen-enriched combustion-supporting air consumption
3/ t
Blue charcoal～200m
3/ t
Blue charcoal, oxygen consumption 22.5m
3/ t
Blue charcoal, gas consumption amount 76～82m
3/ t
Blue charcoal, other allocates cooled coal gas amount 90m into
3/ t
Blue charcoal～100m
3/ t
Blue charcoal, ton coal residual gas amount 580m
3About (Shenmu County's butt raw coal is a benchmark).
H
2: 23.09%, CO:16.29%, CO
2: 10.28%, CH
4: 5.85%, nitrogen: 43.45%.Caloric power of gas: 7223kJ/m
3
(2) application mode
With application example 2.
The mode of cooling section water spray humidification is controlled pyrolysis temperature.Directly the water spray humidification adopts the mode that special atomizing nozzle multiple spot distribution is directly sprayed water to cooling section, and water vapor is up, enters retort section, realizes the dry distillation area temperature controlling.Injection flow rate is amounted to 11kg/t
Blue charcoal
(3) application result
After adopting method of the present invention, coke ratio and tar yield and former technology remain basically stable, and it is 200～210m that blue charcoal is produced stove 30% oxygen-enriched combustion-supporting air consumption
3/ t
Blue charcoal, gas-fired and circulation total amount are reduced to (80～85) m
3/ t
Blue charcoal, ton coal residual gas amount 650m
3About (Shenmu County's butt raw coal).Caloric power of gas reaches (7231.0-7342.8) kJ/Nm
3As follows with reference to gas composition:
H
2: 26.07%, CO:16.20%, CO
2: 11.08%, CH
4: 5.45%, nitrogen: 40.45%.Caloric power of gas 7321kJ/m
3
Retort process is stable, and working of a furnace regulation and control are convenient.
Claims (3)
1, a kind of coal gas internal heating low-temperature cracking temperature control and improving quality of coal gas method is characterized in that, comprise the steps:
1) based on the oxygen enrichment destructive distillation, being prepared into oxygen content with industrial pure oxygen and air mixed is that 60%～100% oxygen-rich air produces high-temp waste gas as the required basic thermal source of the dry distillation of coal with gas-fired in the stove outer burner;
2) to blasting gas retort behind oxygen-rich air and the coal gas humidification, utilize the moisture evaporation and branch heat of desorption of humidification, realize adjusting to temperature, reduce the cooled coal gas amount of allocating into, final 760 ℃～850 ℃ high temperature circulation gases that meet coal low-temperature pyrolysis temperature requirement that form; Simultaneously, the furnace gas of humidification because water-gas reaction produces hydrogen, improves the hydrogen richness in the coal gas in gas retort;
3) will meet the high temperature circulation gas of coal low-temperature pyrolysis temperature requirement, feed internal heat type coal low-temperature pyrolysis stove, coal in the stove is carried out non-oxidation or weak oxide heating, the high heating value gas of output is by behind the tar separation collecting device separates tar, the part pump around circuit continues to provide and the required coal gas of oxygen-rich air burning in burner, and rest parts coal gas uses for subsequent handling or gas to generate electricity.
2, the method for claim 1 is characterized in that, humidification adopts water vapor or the water smoke air blast humidification by burner, perhaps to the destructive distillation cooling section humidification of directly spraying water, perhaps adopts both combinations.
3, method as claimed in claim 2 is characterized in that, described direct water spray humidification adopts the atomizing nozzle multiple spot to distribute and directly sprays water to cooling section, and injection flow rate is set according to the temperature of dry distillation of coal needs.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002377A (en) * | 2010-12-01 | 2011-04-06 | 吴启成 | Aerobic low-temperature dry distillation process and device |
| CN102304372A (en) * | 2011-08-03 | 2012-01-04 | 杨艺明 | Superheated steam carbonization furnace for treating organic rubbishes |
| CN102703097A (en) * | 2012-03-16 | 2012-10-03 | 中国科学院过程工程研究所 | Dry distillation device for coal with wide particle size distribution and method |
| CN105778952A (en) * | 2016-03-16 | 2016-07-20 | 烟台大学 | Coal gas denitrification device and method of adjusting coal gas components |
| CN106865659A (en) * | 2017-03-02 | 2017-06-20 | 西安建筑科技大学 | A kind of coal low temperature distillation high temperature in wastewater disposal and Application way |
| CN108893127A (en) * | 2018-07-03 | 2018-11-27 | 西安建筑科技大学 | A kind of method that routine internal heat type low-temperature dry distillation furnace transform oxygen-enriched gas retort as |
| CN111423893A (en) * | 2020-04-09 | 2020-07-17 | 池州信安电子科技有限公司 | High-efficient environment-friendly carbomorphism boiler |
| CN113999694A (en) * | 2021-10-25 | 2022-02-01 | 昆明理工大学 | Improved method of internal hot-ram charcoal furnace production process based on steam protection |
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2009
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002377A (en) * | 2010-12-01 | 2011-04-06 | 吴启成 | Aerobic low-temperature dry distillation process and device |
| CN102002377B (en) * | 2010-12-01 | 2013-03-20 | 吴启成 | Aerobic low-temperature dry distillation process and device |
| CN102304372A (en) * | 2011-08-03 | 2012-01-04 | 杨艺明 | Superheated steam carbonization furnace for treating organic rubbishes |
| CN102304372B (en) * | 2011-08-03 | 2013-06-26 | 杨艺明 | Superheated steam carbonization furnace for treating organic rubbishes |
| CN102703097A (en) * | 2012-03-16 | 2012-10-03 | 中国科学院过程工程研究所 | Dry distillation device for coal with wide particle size distribution and method |
| CN102703097B (en) * | 2012-03-16 | 2014-09-24 | 中国科学院过程工程研究所 | Dry distillation device for coal with wide particle size distribution and method |
| CN105778952A (en) * | 2016-03-16 | 2016-07-20 | 烟台大学 | Coal gas denitrification device and method of adjusting coal gas components |
| CN106865659A (en) * | 2017-03-02 | 2017-06-20 | 西安建筑科技大学 | A kind of coal low temperature distillation high temperature in wastewater disposal and Application way |
| CN108893127A (en) * | 2018-07-03 | 2018-11-27 | 西安建筑科技大学 | A kind of method that routine internal heat type low-temperature dry distillation furnace transform oxygen-enriched gas retort as |
| CN111423893A (en) * | 2020-04-09 | 2020-07-17 | 池州信安电子科技有限公司 | High-efficient environment-friendly carbomorphism boiler |
| CN113999694A (en) * | 2021-10-25 | 2022-02-01 | 昆明理工大学 | Improved method of internal hot-ram charcoal furnace production process based on steam protection |
| CN113999694B (en) * | 2021-10-25 | 2024-04-05 | 昆明理工大学 | Method for improving production process of internal thermal semi-coke furnace based on water vapor protection |
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Application publication date: 20090805 |