CN110240120A - A kind of raw coke oven gas proposes the process of hydrogen production of chemicals and thermoelectricity Poly-generation - Google Patents
A kind of raw coke oven gas proposes the process of hydrogen production of chemicals and thermoelectricity Poly-generation Download PDFInfo
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
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- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
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- C01C1/26—Carbonates or bicarbonates of ammonium
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- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/06—Integration with other chemical processes
- C01B2203/068—Ammonia synthesis
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Abstract
The invention patent discloses the process that a kind of raw coke oven gas mentions hydrogen production of chemicals and thermoelectricity Poly-generation, belong to industrial waste gas comprehensive utilization and technical field of energy saving and environmental protection, by raw coke oven gas after purifying, compressing, the composition of raw coke oven gas is adjusted by carbon monoxide transformation technical, then realizes CO by controllable type separation adsorption technology2Selectively removing, the purification of hydrogen and the removing of nitrogen, respectively obtain hydrogen, the high concentration CO of high concentration2With meet synthesis technology H2/N2The gas of proportion requirement, and as raw material production methanol, aromatic hydrocarbons, alkane etc. containing one or more kinds of chemicals such as carbon chemicals, liquefied ammonia and urea, ammonium bicarbonate and liquid carbon dioxide.
Description
Technical field
The present invention relates to industrial waste gas comprehensive utilization and technical field of energy saving and environmental protection, specifically a kind of raw coke oven gas is high
Effect separation, resource utilization and greenhouse gases CO2The technology utilized had not only reached energy-saving and environment-friendly effect, but also was similar item
Mesh provides a kind of process of innovation.
Background technique
Raw coke oven gas is a kind of imflammable gas of by-product in semi-coke production process.Semi-coke is also known as semicoke, is low by low-order coal
The warm resulting flammable solid product of destructive distillation, main component are carbon, ash content and volatile matter, are good high heat value smokeless fuel, main
To be used as industry or domestic fuel.Up to now, semicoke production capacity in China's has reached 85,000,000 tons/year or so, and actual production is about
45000000 tons, national semicoke production capacity is concentrated mainly on the areas such as Shaanxi, Shanxi, Ningxia, Xinjiang, Inner Mongol.It is produced according to China is practical
45,000,000 tons/year are measured, the yield of the blue carbon tail gas in China is about 36,000,000,000 ~ 54,000,000,000 Nm3/ year.The ingredient of raw coke oven gas is complex,
And containing impurity compositions such as tar, naphthalene, benzene, contain H simultaneously2、CO、CH4, CnHm and CO2、N2Etc. components, especially nitrogen group
Divide content higher, general calorific value is 1500 ~ 2200kcal/Nm3.It is found by the investigation of early period, at present overwhelming majority semi-coke work
Only using raw coke oven gas as the fuel gas of power plants generating electricity, perhaps its product of the fuel gas of boiler is mostly with electricity or steam for factory
Main, rarer device use raw coke oven gas as raw material production of chemicals, main cause be can not efficiently from raw coke oven gas extraction,
Economical effective gas in cost is isolated, and is difficult to meet the cost-effectiveness requirement of downstream process device.
But from the point of view of current development trend, using blue carbon tail gas as waste chemical products, especially chemicals, such as
There are a degree of demands for the urgency and feasibility of liquefied ammonia, urea, ammonium bicarbonate, methanol, aromatic hydrocarbons, alkane etc..Firstly, since I
Most semi-coke factories of state are located at the Northwest, belong to electric power enrichment and electric power sends region, conventional raw coke oven gas power generation outside
Factory is faced with the low double influence low with device operating load of rate for incorporation into the power network, and with the implementation of environment protection treating, new environmental protection
More stringent requirements are proposed to existing power plant for discharge standard；Secondly, the soaring and Domestic Environment with international oil price is protected
The price of the appearance and implementation of shield policy, the products such as bulk chemical such as liquefied ammonia, methanol, aromatic hydrocarbons, polyolefin is gradually high, heavier
It wants, with advances in technology, so that being feasible in economy with blue carbon tail gas chemicals.
Therefore, technically reliable is found, economically viable raw coke oven gas efficient technique of rainwater utilization is that current semi-coke industry is badly in need of solving
A major issue.Moreover, with country to the development of the raising of semi-coke industry energy-saving and emission-reduction requirement and energy market and
A possibility that following rise of the oil price very big situation, the urgency that the following raw coke oven gas efficiently utilizes is stronger.
In addition, the resource utilization of carbon dioxide and reduction of greenhouse gas discharge future will welcome certain opportunity to develop, therefore,
While realizing the comprehensive utilization of tail of semi coke, if the emission reduction for being able to achieve carbon dioxide will be to the green low of semi-coke industry
Carbon ribbon carrys out advantageous impetus.
Summary of the invention
(1) technical problems to be solved
The present invention is in order to solve the above-mentioned technical problem, and to provide a kind of process system that raw coke oven gas high-effective classifying sub-prime utilizes
Scheme can only produce the chemicals of high added value, including but not limited to liquefied ammonia, urea, ammonium bicarbonate, first using raw coke oven gas as raw material
Alcohol, aromatic hydrocarbons and alkane etc., while the exhaust gas of process unit by-product being comprehensively utilized, it realizes cogeneration of heat and power, both improves raw coke oven gas
Utilization efficiency, and reduce the discharge of pollutant, it should be noted that this process effectively reduces greenhouse gases dioxy
The discharge for changing carbon, realizes maximum resource utilization as much as possible.
(2) technical solution
The technical program is to pass through the group of sulfur resistant conversion process adjustment raw coke oven gas by raw coke oven gas after purification pretreatment, pressurization
At to realize that CO is converted to H2Purpose, then by controllable type isolation technics removing conversion gas in CO2, this part CO2As
The raw material of downstream chemical product synthesis and production, and then continue to realize the de- of nitrogen in process gas using controllable type multi-stage separation technology
Except the concentrate with hydrogen, respectively obtains the hydrogen of high concentration and meet ammonia synthesis process H2/N2The gas of ratio.High-purity hydrogen
With CO2Gas produces methanol, aromatic hydrocarbons etc. containing carbon chemicals together；H2/N2Mixed gas produces liquefied ammonia, further, with CO2Gas
Body is synthetically produced the products such as urea, ammonium bicarbonate；CO2Gas can produce technical grade/food-grade liquid carbon dioxide.Pressure swing adsorption technique
The fuel gas of the stripping gas of by-product and the periodic off-gases of synthesis technology by-product as cogeneration of heat and power, to realize the maximum of tail of semi coke
Change and utilize, while reducing greenhouse gases CO2Discharge.
More for impurity composition in raw coke oven gas in the step 1, especially more carbon hydro carbons and tar component are complicated, have
Machine sulphur and the feature that inorganic sulphur impurity is more and fluctuation is larger load the absorption of different absorption properties using compound absorbing process
Agent.It can satisfy impurity requirement of the compressor to component in step 2 by pretreated gas.
In the step 2, raw coke oven gas is sent to compressor boost after purification, and outlet pressure is in 0.2 ~ 5.0MPaG, according to famine
The treatment scale of coal gas, downstream synthesis technology technical requirements can be with optimum choice.
In the step 3, raw coke oven gas is converted to H after carbon monodixe conversion, by CO2, using wide warm sulphur-resistant conversion work
Skill, using water/gas than the process design not higher than 0.3, and according to the content of oxygen in raw coke oven gas, when oxygen content >=0.3%
When mol, de-oxygen bed is added.
In the step 4, CO is removed using controllable type pressure swing adsorption2, loaded using layering and bed divided to load
Technology is selected to CO2Compound adsorbent with high-selectivity adsorption passes through control adsorptive pressure and adsorption-regeneration time
It adjusts, selectively and quantitatively removes the CO in conversion gas2And realize CO2Enrichment, this part CO2It will be closed as chemicals
At unstripped gas.CO2Adsorbance on the one hand by pressure adjust, in conjunction with the characteristics of compound adsorbent efficient absorption, according to not
Same raw coke oven gas composition measuring adsorption curve, and be coupled in adsorption-regeneration time controlled system module, pass through and adjusts absorption-
Period reproduction time, and then reach control CO2The purpose of product volume.
In the step 4, continue using controllable type multi-stage separation adsorption technology, it is isolated from raw coke oven gas to contain nitrogen
With the hydrogen (H of Hydrogen synthesis gas and high-purity2Volume content >=90%).The concentrate that membrane separation technique carries out hydrogen can be used,
It can be using multistage controllable pressure swing adsorption technique；Or the two is used in combination, and carries out the first of gas using membrane separation process first
Then step separation is adsorbed controllable isolation technics using stage variable pressure and is further processed.Wherein, controllable type stage variable pressure adsorption technology
It is to select 2 kinds or more the different porous absorption of selectivity the characteristics of being up to 30 ~ 60% for nitrogen volume content in process gas
Agent, including having the adsorbent of high-selectivity adsorption to nitrogen, by the way of more bed series/parallel, at least using 2 sections of strings
The separation system of connection quantitatively obtains hydrogen, the hydrogen/nitrogen gaseous mixture of different purity, and can basis using grading control technology
The ratio of the actual above two gas of product demand flexible modulation, or only produce one of gas.
Wherein, UF membrane selection has highly selective permeable membrane to hydrogen, and single-stage separation can be selected, also can choose multistage
Permeability and separation；
Multistage controllable pressure swing adsorption technique selects the adsorbent of a variety of different performances, is loaded using more beds.In particular for work
N in skill gas2The higher feature of content is selected to N2There is the micro-porous adsorption agent of high-selectivity adsorption, in absorption N2While realize H2
Separation；According to the composition of process gas, measures adsorption curve and be coupled in adsorption-regeneration control system module, by online
The adsorption-regeneration period is adjusted, to realize the N2 absorption of different proportion, generates different H2/N2The hydrogen rich gas of ratio either purity
>=99.9% high-purity hydrogen.
In the step 5, H2/N2Synthesis gas produce liquefied ammonia, and and carbon dioxide together as Material synthesis urea, carbon
Ammonium, to obtain ammonia and two kinds of urea, ammonium bicarbonate chemicals；The hydrogen and carbon dioxide of high-purity produce carbon containing together as raw material
The products such as chemicals, including but not limited to methanol, aromatic hydrocarbons, alkane；Partial CO 2 is industrial using technology production is compressed and liquefied
Grade/food-grade liquid carbon dioxide product.
[hole 1] periodic off-gases are sent into gas fired-boiler or gas turbine, can both generate electricity, at the same mating cogeneration or
Waste heat boiler, the steam of the multiple specifications of by-product, to meet use heat, the steam turbine demand of system.
(3) beneficial effect
The present invention provides a kind of technology methods of raw coke oven gas comprehensive utilization, are separated using controllable type pressure swing adsorption
CO2And purifying hydrogen of hydrogen, it had both solved raw coke oven gas and had efficiently separated and resource utilization, and realized the effective of each component in raw coke oven gas
It utilizes, while greenhouse gases CO can be reduced again2Discharge, reached energy-saving and environment-friendly effect, and there is certain economy, be
Similar project provides a kind of new technology method.Main feature of the invention is as follows:
(1) resource utilization of various ingredients in raw coke oven gas, including H are realized2、CO、CH4And hydro carbons, especially realize
CO2And N2Resource utilization, improve the utilization efficiency of raw coke oven gas；
(2) technical maturity is reliable, and process design is reasonable, can produce the chemicals of a variety of high added values, improves project totality
Economic benefit；
(3) it realizes using raw coke oven gas as the chemicals of raw material, heat, electric Poly-generation；
(4) a kind of Resources of Carbon Dioxide is provided to utilize and the thinking of reduction of greenhouse gas discharge；
(5) a kind of resolving ideas that raw coke oven gas comprehensive high-efficiency utilizes is provided.
Detailed description of the invention
Fig. 1 is the process flow diagram of embodiment 1；
Fig. 2 is the process flow diagram of embodiment 2.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating case study on implementation of the invention.
Embodiment 1:
Referring to Fig.1, the present embodiment is using the raw coke oven gas of semi-coke factory, the Northwest by-product as raw material, it is contemplated that the geographical position on ground of founding the factory
It sets, the various aspects factor such as local product demand and market, determines that using raw coke oven gas be raw material production methanol, urea, while by-product one
Operative liquid carbon dioxide outside product as selling, and using chemicals and heat, electric Poly-generation mode, the processing tolerance of raw coke oven gas is 15
Ten thousand Nm3/ h, year produce 100,000 tons of methanol, 90,000 tons of urea, 50,000 tons of liquid carbon dioxide.
Total technological process is as follows: the raw coke oven gas of upstream semi-coke device by-product initially enters gas holder, subsequently into purification [hole 2]
Impurity composition is removed, efficient micro-porous adsorption agent is selected, using the technique of three bed parallel connections, two beds when normal operation, separately
The cooling regeneration of an outer bed；Raw coke oven gas after pretreatment is sent into compressor boost to 1.2MPaG, selects 1 centrifugal pressure
Contracting machine, pressurization raw coke oven gas go successively to [hole 3], and using two sections of low water/gas than transformation tandem process, two sections of change furnaces enter implication
CO in raw coke oven gas is transformed into H between 0.20 ~ 0.25 than control by the water/gas of body2, downstream is sent to after converting air cooling
Decarbonization device unstripped gas of a part of carbon dioxide as downstream unit, technique are extracted using controllable type pressure-variable adsorption process
Gas goes successively to the hydrogen production device that mentions in downstream, carries out initial gross separation to gas using UF membrane first, and then proceeding to can using two-stage
Control type pressure swing adsorption and multiple adsorption tower process, respectively obtain the H for meeting ammonia synthesis requirement2/N2Gaseous mixture and methanol-fueled CLC
It is required that high concentration hydrogen (H2Volume ratio >=95%).H2/N2Synthesis gas is sent into ammonia synthesizer, pressurizes and send after purification and impurity removal
Liquefied ammonia is produced to ammonia synthesis reactor, further, together with the carbon dioxide (using after purification and impurity removal) from decarbonization device
It is sent into apparatus for urea synthesis as raw material, produces urea product.Carbon dioxide (the purification of high concentration hydrogen and decarbonization device by-product
Used after removal of impurities) it is sent to methanol synthesizer together, using hydrogenation of carbon dioxide methanol technology, purified, pressurization, methanol are closed
At and rectifying, methanol product is prepared.Remaining partial CO 2 is after purifying, cleaning, using the side compressed and liquefied
Liquid carbon dioxide product is prepared in formula, can produce the product of two kinds of specifications of technical grade and food-grade as needed.
Fuel gas of the exhaust gas that pressure-swing absorption apparatus desorption generates as cogeneration system, supplements a part of raw coke oven gas one
It is sent into thermo-power station together after playing mixing, hot steam and low-pressure steam are pressed through in by-product, while producing a part of electricity, for full factory's device
It uses.
Embodiment 2:
Referring to Fig. 2, the present embodiment is using the raw coke oven gas of certain semi-coke factory by-product as raw material, it is contemplated that geographical location, the region on ground of founding the factory
The various aspects factor such as product demand and market determines and produces aromatic hydrocarbons, urea, while a part of liquid of by-product by raw material of raw coke oven gas
Carbon dioxide outside product as selling, and using chemicals and heat, electric Poly-generation mode, the processing tolerance of raw coke oven gas is 250,000 Nm3/ h,
80,000 tons of aromatic hydrocarbons, 20,000 tons of liquefied ammonia, 80,000 tons of urea, 20,000 tons of ammonium bicarbonate, 100,000 tons of liquid carbon dioxide of year production.
Total technological process is as follows: the raw coke oven gas of upstream semi-coke device by-product initially enters gas holder, subsequently into purification device
After removing impurity composition, compressor boost is sent into 2.5MPaG, the raw coke oven gas that pressurizes goes successively to carbon monoxide conversion device, needle
The characteristics of 0.8%mol is up to oxygen content in unstripped gas, using one section of de-oxygen bed and three sections of low water/gas than transformation series connection work
CO in raw coke oven gas is transformed into H between 0.18 ~ 0.23 than control by the water/gas of skill, three sections of change furnace inlet gas2, become
It is sent to the decarbonization device in downstream after ventilation is cooling, using controllable type pressure-variable adsorption process, extracts under a part of carbon dioxide conduct
The unstripped gas of device is swum, process gas goes successively to the hydrogen production device that mentions in downstream, initial gross separation is carried out to gas using UF membrane first,
It then proceedes to respectively obtain the H for meeting ammonia synthesis requirement using two-stage controllable type pressure swing adsorption and multiple adsorption tower process2/N2
High concentration hydrogen (the H that gaseous mixture and methanol-fueled CLC require2Volume ratio >=95%).H2/N2Synthesis gas is sent into ammonia synthesizer, warp
Pressurization is sent to ammonia synthesis reactor production liquefied ammonia after crossing purification and impurity removal, and a part of liquefied ammonia is sold outside as product, remaining part liquid
Ammonia and the carbon dioxide (purification and impurity removal) from decarbonization device are given birth to respectively together as raw material feeding urea and ammonium bicarbonate synthesizer
Produce urea and ammonium bicarbonate.Aromatic hydrocarbons synthesis dress is sent to after the carbon dioxide (purification and impurity removal) of high concentration hydrogen and decarbonization device by-product together
It sets, using hydrogenation of carbon dioxide aromatic hydrocarbons technology, aromatic hydrocarbon product is prepared in purified, pressurization, aromatic hydrocarbons synthesis and separation.It is surplus
Liquid carbon dioxide product, root is prepared after purifying, cleaning in remaining partial CO 2 by the way of compressing and liquefying
According to the product for needing to produce two kinds of specifications of technical grade and food-grade.
Fuel gas of the exhaust gas that pressure-swing absorption apparatus desorption generates as cogeneration system, supplements a part of raw coke oven gas one
It is sent into thermo-power station together after playing mixing, hot steam and low-pressure steam are pressed through in by-product, while producing a part of electricity, for full factory's device
It uses.
The typical composition of 1 raw coke oven gas of table
It should be noted that said components are a typical composition of certain factory, the composition of all raw coke oven gas is not represented.For tool
Body project needs to carry out analysis measurement.
Embodiment of above is merely to illustrate the case study on implementation of invention, and not limitation of the present invention, related technology are led
The those of ordinary skill in domain can also make a variety of changes and modification without departing from the spirit and scope of the present invention,
Therefore all equivalent technical solutions also belong to scope of the invention, and scope of patent protection of the invention should be limited by claim
It is fixed.
Claims (9)
1. the process that a kind of raw coke oven gas mentions hydrogen production of chemicals and thermoelectricity Poly-generation, which is characterized in that the process
The following steps are included:
Step 1: raw coke oven gas purification pretreatment removes the solid particle and partial impurities in gas；
Step 2: pressurization, by the gas after step 1 removal of impurities through compressor boost to 0.2 ~ 5.0MpaG；
Step 3: transformation, the gas being pressurized through step 2 are converted to H through carbon monoxide transformation technical, by CO2；
Step 4: gas separation, the gas that step 3 is obtained separate absorbing process, including but not limited to film point using controllable type
From with the series-parallel technology such as pressure-variable adsorption, realize H2、CO2And N2Separation；
Step 5: respectively with H2、CO2And N2And H2/N2Gaseous mixture be raw material, produce a variety of chemical products, including but not limited to
Produce one or more kinds of chemicals such as hydro carbons, the liquid carbon dioxides such as liquefied ammonia, urea, ammonium bicarbonate etc. and methanol, aromatic hydrocarbons；
Step 6: the stripping gas of recycling pressure-variable adsorption by-product and the periodic off-gases of chemicals production by-product, and the original as cogeneration of heat and power
Expect gas, produce steam and generates electricity.
2. process as described in claim 1, which is characterized in that step 1 uses high-selectivity adsorption agent, removes raw coke oven gas
In tar, polymolecular hydro carbons and sulfur component etc..
3. process as described in claim 1, which is characterized in that step 2 pressurizes to gas using compressor, exports
Pressure controls within the scope of 0.2 ~ 5.0MpaG.
4. process as described in claim 1, which is characterized in that the wide warm sulfur resistant conversion process of step 3 use, no less than two
De-oxygen bed is arranged than conversion process, and according to the oxygen content of unstripped gas in low water/vapour of section.
5. the process as described in Claims 1-4, which is characterized in that step 4 is using layering filling and bed is divided to load
Adsorption technology is selected to CO2Compound adsorbent with high-selectivity adsorption, when by control adsorptive pressure and adsorption-regeneration
Between adjusting, selectively and quantitatively remove the CO in conversion gas2And realize CO2Enrichment.
6. the process as described in Claims 1-4, which is characterized in that step 4 adsorbs skill using controllable type multi-scale analysis
Art, the series-parallel technique loaded including UF membrane or/and layering, the adsorption technology of bed filling is divided to combine, from raw coke oven gas
Hydrogen (the H of isolated gaseous mixture and high-purity containing nitrogen and hydrogen2Volume content >=90%).
7. the process as described in Claims 1-4, which is characterized in that controllable type multi-stage separation adsorption technology is directed to technique
The characteristics of nitrogen volume content is up to 30 ~ 60% in gas carries out the concentrate of hydrogen using membrane separation technique and multistage controllable transformation is inhaled
Any one in attached technique or two kinds select 2 kinds or more different selective micro-porous adsorption agent, including have height to nitrogen
The adsorbent of selective absorption at least uses 2 sections or more concatenated separation systems by the way of more bed series/parallel,
Using grading control technology, hydrogen, the hydrogen/nitrogen gaseous mixture of different purity are quantitatively obtained, and can control above two gas
Ratio or only produce one of gas.
8. the process as described in Claims 1-4, which is characterized in that step 5 is by H2/N2Synthesis gas to produce liquefied ammonia,
And and CO2Together as Material synthesis urea, ammonium bicarbonate；The hydrogen and CO of high-purity2Contain carbon chemicals together as raw material production,
The including but not limited to products such as methanol, aromatic hydrocarbons, alkane；Partial CO 2 produces technical grade/food using the technology that compresses and liquefies
Grade liquid carbon dioxide product.
9. the raw coke oven gas as described in Claims 1-4 proposes the process of hydrogen production of chemicals and thermoelectricity Poly-generation, feature exists
In step 6 is using the periodic off-gases of the stripping gas of controllable type pressure swing adsorption technique by-product and synthesis technology by-product as cogeneration of heat and power
Fuel gas, the steam of the multiple ranks of by-product while power generation.
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| CN112499584A (en) * | 2020-12-30 | 2021-03-16 | 陕西东鑫垣化工有限责任公司 | Process for preparing hydrogen-nitrogen synthesis gas from desorption gas |
| CN112662437A (en) * | 2020-12-30 | 2021-04-16 | 陕西东鑫垣化工有限责任公司 | Grading and quality-based utilization process of raw coke oven gas |
| CN113184805A (en) * | 2021-04-27 | 2021-07-30 | 陕西东鑫垣化工有限责任公司 | Comprehensive utilization and carbon fixation process for pyrolysis gas |
| CN113753896A (en) * | 2021-10-08 | 2021-12-07 | 华陆工程科技有限责任公司 | Preparation method of synthesis gas for realizing zero carbon emission by using electric energy combined inverse transformation reaction |
| CN114715845A (en) * | 2021-01-05 | 2022-07-08 | 中国石油天然气股份有限公司 | Ammonia synthesis system |
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| CN112499584A (en) * | 2020-12-30 | 2021-03-16 | 陕西东鑫垣化工有限责任公司 | Process for preparing hydrogen-nitrogen synthesis gas from desorption gas |
| CN112662437A (en) * | 2020-12-30 | 2021-04-16 | 陕西东鑫垣化工有限责任公司 | Grading and quality-based utilization process of raw coke oven gas |
| CN114715845A (en) * | 2021-01-05 | 2022-07-08 | 中国石油天然气股份有限公司 | Ammonia synthesis system |
| CN113184805A (en) * | 2021-04-27 | 2021-07-30 | 陕西东鑫垣化工有限责任公司 | Comprehensive utilization and carbon fixation process for pyrolysis gas |
| CN113753896A (en) * | 2021-10-08 | 2021-12-07 | 华陆工程科技有限责任公司 | Preparation method of synthesis gas for realizing zero carbon emission by using electric energy combined inverse transformation reaction |
| CN113753896B (en) * | 2021-10-08 | 2022-09-13 | 华陆工程科技有限责任公司 | Preparation method of synthesis gas for realizing zero carbon emission by using electric energy combined inverse transformation reaction |
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