CN108059977A - A kind of near-zero release, CO2The fossil energy Application way of recycling - Google Patents
A kind of near-zero release, CO2The fossil energy Application way of recycling Download PDFInfo
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- CN108059977A CN108059977A CN201711408356.9A CN201711408356A CN108059977A CN 108059977 A CN108059977 A CN 108059977A CN 201711408356 A CN201711408356 A CN 201711408356A CN 108059977 A CN108059977 A CN 108059977A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1606—Combustion processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
- C10J2300/1675—Integration of gasification processes with another plant or parts within the plant with the production of electricity making use of a steam turbine
Abstract
The present invention relates to a kind of near-zero release, CO2The production of coal gasification, power generation and chemical products is coupled together, integrates each process stream, energy in coupling process, i.e., by the fossil energy Application way of recycling, the method for the present invention:From the CO of continued emissions2In a certain amount of input electricity generation system is taken to recycle, the water or steam of the generation that generates electricity make fluidized gas and participate in gasification reaction, remaining CO21,3,5 s-triazine triols are produced as industrial chemicals, the Chemical Manufacture of 1,3,5 s-triazine triol chemical products and power generation are organically combined, fundamentally solve CO2Recycling makes full use of with C atoms, realizes CO2Zero-emission.It solves in existing multi-production process and largely discharges CO2The key technology of greenhouse gases, realizes CO2The purpose of recycling, green energy resource and chemical industry.Realize CO2With the efficiently organic utilization of hydrogen, this method can realize SO simultaneously2、NOX, particulate matter and CO2Near-zero release, and reduce H2Generation risk simultaneously realizes CO2The method of recycling.
Description
Technical field
The present invention relates to a kind of near-zero release, CO2The fossil energy Application way of recycling belongs to coal combustion environmental protection
Technical field.
Background technology
Fossil energy occupies the 85% of China's primary energy, wherein with coal accounting highest, about 66%.Fossil energy
A large amount of uses cause SO2、NOX, particulate matter and CO2Excess emissions, atmosphere quality drastically deteriorates.Although after burning
Removing various pollutants can reduce pollution;But the input of large number of equipment is needed, and generates a large amount of CO2。CO2Discharge not
It only exacerbates greenhouse effects and causes Global climate change, while also result in the waste of carbon resource.Hydrogen Energy is because with energy density
Height, thermal transition are efficient, combustion product only has the advantages that water, receive significant attention.Natural gas or oven gas due to good economy performance,
And hydrogen recovery rate and purity have very high level (referring to the present Research and development prospect of hydrogen producing technology,《Modernization
Work》, 2013,33 (5):31-35), often by as the fossil fuel suitable for industrial-scale hydrogen manufacturing;Such as:Integral coal gasification fires
Gas steam combined cycle power generating system (IGCC) cleans, efficiently, can realize CO2Near-zero release is (referring to IGCC polygenerations systemes
Process route Selecting research,《Tohoku Electric Power technology》, 2014,35 (8):22-25);But it is high not solve pure hydrogen generation risk
And CO2The problems such as recycling.
Pure hydrogen burning, which is susceptible to, to fire, while situations such as generation higher NOx emission, mainly mixes hydrocarbon fuel at present
Or nitrogen combustion.CO at present2Research of utilization is mainly synthesizing methane, methanol, dimethyl ether or liquid fuel etc., main
Problem is H2Dosage it is big, process high energy consumption and product life cycle is short.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of near-zero release, CO2The fossil energy of recycling utilizes
Method.
Summary of the invention:
The method of the present invention by coal gasification, power generation and chemical products production be coupled together, in coupling process by each process stream,
Energy is integrated, i.e.,:From the CO of continued emissions2In take it is a certain amount of input electricity generation system recycle, the water for the generation that generates electricity or
Steam makees fluidized gas and participates in gasification reaction, remaining CO21,3,5- s-triazine triols are produced as industrial chemicals, by 1,3,5- equal three
The Chemical Manufacture of piperazine triol chemical products and power generation organically combine, and fundamentally solve CO2It recycles and C atoms
Make full use of, realize CO2Zero-emission.It solves in existing multi-production process and largely discharges CO2The crucial skill of greenhouse gases
Art realizes CO2The purpose of recycling, green energy resource and chemical industry.Realize CO2With the efficiently organic utilization of hydrogen, the party
Method can realize SO simultaneously2、NOX, particulate matter and CO2Near-zero release, and reduce H2Generation risk simultaneously realizes CO2Recycling
Method.
The present invention is achieved through the following technical solutions:
A kind of near-zero release, CO2The fossil energy Application way of recycling, the CO generated in technique2It is given birth to as raw material
Produce chemicals, while a certain amount of CO2Defeated to postback electric system recycling, overall process is without CO2Externally discharge;It is as follows including step:
(1) fossil fuel is using water vapour as fluidized gas, pressure in 1~10Mpa, the condition of 1200~1600 DEG C of temperature
Lower carry out gasification reaction, obtains thick conversion gas, it is thick convert gas under conditions of the pressure of 1~10Mpa, 180~460 DEG C of temperature into
Row transformationreation obtains thick conversion gas;
(2) thick conversion gas obtains high-purity hydrogen by desulfurization, decarburization, afterwards by CO2Parsing obtains high-purity CO2;
(3) high-purity CO that step (2) obtains2In high-purity hydrogen, the hydrogen and CO for accounting for total hydrogen total amount 20~50% are taken2It does
In carrier gas input electricity generation system, while input oxygen mix progress combustion power generation and generate water, CO simultaneously2Input quantity makes hydrogen dense
Degree is diluted to 20~60%;
(4) step (2) high-purity CO2In high-purity hydrogen, remaining all CO persistently generated2With 50~80% hydrogen, with
The N that space division obtains2Synthesis of solid product 1,3,5- s-triazine triols;
(5) generate electricity remaining CO2All the defeated electric system that postbacks recycles, and the water or steam of generation are as step (1)
Fluidized gas participates in gasification reaction.
Preferred according to the present invention, step (1) gasification reaction carries out in gasification furnace, and gasification furnace is fixed bed/moving bed
Gasification furnace, ebullated bed/fluidized-bed gasification furnace or airflow bed gasification furnace, the fixed bed/moving bed gasification stove is UGI stoves, Lu Qi
(Lurgi) strange (BGL) stove of stove or slag tap Shandong, ebullated bed/fluidized-bed gasification furnace are circle fluidized-bed gasification furnace or bubble flow
Change bed gasification furnace, airflow bed gasification furnace Texaco, shell or GSP gasification furnace.
Preferred according to the present invention, step (1) transformationreation carries out in change furnace, and change furnace is converted or arranged for axis warp-wise
Tubular type temperature change furnace.
The step (1) of the present invention is by prior art progress, referring to the comparison of document coal gasifying process,《Middle nitrogenous fertilizer》, 2001,
(1):30-32。
Preferred according to the present invention, desulfurization and decarburization process washes process, polyethylene glycol dimethyl ether for low-temp methanol in step (2)
Method (Selexol) process, MEDA processes.
The present invention step (2) desulfurization and decarburization by the prior art carry out, referring to document coal gasification purification techniques selection and
Compare, chemical engineering and equipment, 2009, (1), 108-111.
It is preferred according to the present invention, in step (3), CO during combustion power generation2、H2、O2Flow-rate ratio is 0.1~2.3:1:0.5~
0.6, fuel to air equivalence is than φ=0.8~1.4.
It is preferred according to the present invention, in step (3), importation space division obtains during combustion power generation N2, CO2、N2、H2、O2
Flow-rate ratio is 0.2~1.3:0.1~1:1:0.5~0.6, fuel to air equivalence is than φ=0.8~1.4.
Preferred according to the present invention, in step (3), electricity generation system is power station gas turbine and steam turbine.
It is preferred according to the present invention, in step (4), the CO of 1,3,5- s-triazine triol of synthesis of solid product2、H2、N2Volume
Than for 1:1.5~1.7:3.0~3.4.
Preferred according to the present invention, in step (4), the actual conditions of 1,3,5- s-triazine triol of synthesis of solid product is such as
Under:N2And H2First NH is synthesized under the conditions of 15~20MPa, 400 DEG C~520 DEG C3, NH afterwards3With CO2In 10~30MPa, 185
Synthesize urea liquid under the conditions of~190 DEG C first, last urea liquid is at 150~350 DEG C, 1~10Mpa synthesis of solid product 1,3,5- equal three
Piperazine triol, while the NH released3Return continues with, and reactor can be microwave reactor, spiral pipe reactor, catalyst
For ammonium chloride.
It is an advantage of the current invention that burning by fossil energy hydrogen manufacturing improves energy utilization rate, while realize SO2、NOX、
Particulate matter and CO2Near-zero release;The CO of generation2Only need less amount of hydrogen and the N being easy to get2, synthesized CO2Content is highest
Stabilization of solid product;Hydrogen is in CO2Power generation is carried out under dilution reduces burning risk, CO2It recycles without supplement;H2Burning
The water of generation can return to hydrogen production process, reduce the energy consumption and water consume of whole process.
Compared with prior art, the beneficial effects of the invention are as follows:Energy utilization rate is improved, reduces pollutant and greenhouse gases
Gas discharges, while realizes the high-value-use of carbon resource.
Description of the drawings
Fig. 1 is a kind of near-zero release of the present invention, CO2The flow of the fossil energy Application way of recycling is shown
It is intended to.
Specific embodiment
For a further understanding of the present invention, with reference to embodiment is simple to one kind provided by the invention, efficient fossil
Energy utilizing method is described in detail.
Embodiment 1
A kind of near-zero release, CO2The fossil energy Application way of recycling, the CO generated in technique2Synthesis chemistry
Product, a certain amount of CO2Defeated to postback the use of electric system ring, overall process is without CO2Externally discharge;It is as follows including step:
(1) 1000 ton of lignite (sulphur content 2.03%) is using water vapour as fluidized gas, in the pressure of 9.3Mpa and 1350 DEG C of temperature
Gasification reaction is carried out under conditions of degree, obtains thick conversion gas, the thick gas that converts is under conditions of the pressure of 6.5Mpa and 230 DEG C of temperature
It carries out transformationreation and obtains thick conversion gas;
(2) thick conversion gas washes process by low-temp methanol, obtains the high-purity hydrogen of about 165 tons of 99.5% concentration first, it
Decompression parsing obtains high-purity CO of about 1076 tons of 99.1% concentration afterwards2;
(3) high-purity CO2In high-purity hydrogen, 92 tons of hydrogen and 1 ton of CO are taken2, maintain hydrogen and CO at air inlet2Flow-rate ratio is about
1:Combustion power generation is carried out into 20 gas turbine of solar Saturnians under conditions of 1.5,220MWh electricity is generated and generates about 820 simultaneously
Ton steam;
(4) high-purity CO2In high-purity hydrogen, remaining 1075 tons of whole CO2With 73 tons of hydrogen, the N obtained with space division2
Synthesize about 1040 tons of the white solid product 1,3,5- s-triazine triol of purity 92.3%;
(5) CO in power generation process2It does not consume, is all recycled in electricity generation system, the water or steam of generation of burning are made
Gasification reaction is participated in for the fluidized gas of step (1).
Embodiment 2
A kind of near-zero release, CO2The fossil energy Application way of recycling, synthesis of chemicals, a certain amount of CO2Defeated time
Electricity generation system, overall process is without CO2Externally discharge;It is as follows including step:
(1) 1500 ton of lignite (sulphur content 2.10%) is using water vapour as fluidized gas, in the pressure of 8.5Mpa and 1330 DEG C of temperature
Gasification reaction is carried out under conditions of degree, obtains thick conversion gas, the thick gas that converts is under conditions of the pressure of 6.5Mpa and 240 DEG C of temperature
It carries out transformationreation and obtains thick conversion gas;
(2) thick conversion gas washes process by low-temp methanol, obtains the high-purity hydrogen of about 248 tons of 99.4% concentration first, it
Decompression parsing obtains high-purity CO of about 1600 tons of 99.1% concentration afterwards2;
(3) high-purity CO2In high-purity hydrogen, 148 tons of hydrogen and 2 tons of CO are taken2, maintain hydrogen and CO at air inlet2Flow-rate ratio is about
1:Combustion power generation is carried out into 20 gas turbine of solar Saturnians under conditions of 1.7,350MWh electricity is generated and generates about 1320 simultaneously
Ton steam;
(4) high-purity CO2In high-purity hydrogen, remaining 1598 tons of whole CO2With 110 tons of hydrogen, the N obtained with space division2
Synthesize about 1566 tons of the white solid product 1,3,5- s-triazine triol of purity 91.3%;
(5) CO in power generation process2It does not consume, is all recycled in electricity generation system, the water or steam of generation of burning are made
Gasification reaction is participated in for the fluidized gas of step (1).
Comparative example 1
A kind of near-zero release, CO2The fossil energy Application way of recycling, carries out as described in Example 1, different
Be:
Step (3) takes the hydrogen and CO for accounting for total hydrogen total amount 10%2It does in carrier gas input electricity generation system, while inputs oxygen
Mixing carries out combustion power generation and generates water, CO simultaneously2Input quantity makes density of hydrogen be diluted to 20~60%;
Step (4) high-purity CO2In high-purity hydrogen, remaining all CO persistently generated2Hydrogen with 90%, obtains with space division
The N arrived21,3,5- s-triazine triol of synthesis of solid product, electricity production and 1,3,5- s-triazine triol yields are compared with the present invention
Compared with.
Comparative example 2
A kind of near-zero release, CO2The fossil energy Application way of recycling, carries out as described in Example 1, different
Be:
Step (3) takes the hydrogen and CO for accounting for total hydrogen total amount 90%2、N2It does in carrier gas input electricity generation system, while inputs oxygen
Gas mixing carries out combustion power generation and generates water, CO simultaneously2、N2Flow-rate ratio is 1:1, general input make density of hydrogen be diluted to 20~
60%;
Step (4) high-purity CO2In high-purity hydrogen, remaining all CO persistently generated2Hydrogen with 10%, obtains with space division
The N arrived21,3,5- s-triazine triol of synthesis of solid product, electricity production and 1,3,5- s-triazine triol yields are compared with the present invention
Compared with.
Experimental example:
Exemplified by the coal of the Yi great village, great Zhuan coals are one of common coals, and carbon content is higher, and hydrogen content is relatively low, great Zhuan coal elements
It is analyzed as follows:
Table 1
C | H | N | S | O | |
Coal one | 55.44 | 2.74 | 0.73 | 1.1 | 3.4 |
The method of embodiment 1-2 and comparative example 1-2:Influence of the different distribution of gas to product yield and generated energy, is shown in
Shown in table 2:
Table 2
1,3,5- s-triazine triol yields | Gross generation MW | |
Embodiment 1 | 85% | 115.41 |
Embodiment 2 | 80% | 116.77 |
Comparative example 1 | 58% | 88.23 |
Comparative example 2 | 63% | 71.34 |
By the comparison of table 2, it can be seen directly that, gas different proportion distributes the receipts for directly resulting in 1,3,5- s-triazine triols
The reduction of rate and generated energy, gas unreasonable distribution CO in coupling process2Recycling is not fully utilized with C atoms,
CO2It can be discharged into coupling process in environment, cause the loss of C.
Claims (8)
1. a kind of near-zero release, CO2The fossil energy Application way of recycling, the CO generated in technique2It is produced as raw material
Chemicals, while a certain amount of CO2Defeated to postback electric system recycling, overall process is without CO2Externally discharge;It is as follows including step:
(1) fossil fuel is using water vapour as fluidized gas, under conditions of the pressure, 1200~1600 DEG C of temperature in 1~10Mpa into
Row gasification reaction, obtains thick conversion gas, and the thick gas that converts is become under conditions of the pressure of 1~10Mpa, 180~460 DEG C of temperature
It changes and thick conversion gas is obtained by the reaction;
(2) thick conversion gas obtains high-purity hydrogen by desulfurization, decarburization, afterwards by CO2Parsing obtains high-purity CO2;
(3) high-purity CO that step (2) obtains2In high-purity hydrogen, the hydrogen and CO for accounting for total hydrogen total amount 20~50% are taken2It does and dilutes
In gas input electricity generation system, while input oxygen mix progress combustion power generation and generate water, CO simultaneously2Input quantity makes density of hydrogen dilute
It releases to 20~60%;
(4) step (2) high-purity CO2In high-purity hydrogen, remaining all CO persistently generated2With 50~80% hydrogen, with space division
Obtained N2Synthesis of solid product 1,3,5- s-triazine triols;
(5) generate electricity remaining CO2All the defeated electric systems that postback recycle, the fluidized gas of the water or steam of generation as step (1)
Participate in gasification reaction.
2. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
Step (1) gasification reaction carries out in gasification furnace, and gasification furnace is fixed bed/moving bed gasification stove, ebullated bed/fluidized-bed gasification furnace
Or airflow bed gasification furnace, the fixed bed/moving bed gasification stove is UGI stoves, strange (Lurgi) stove in Shandong or slag tap Shandong are strange
(BGL) stove, ebullated bed/fluidized-bed gasification furnace be circle fluidized-bed gasification furnace or bubbling fluidization bed gasification furnace, airflow bed gasification furnace
For Texaco, shell or GSP gasification furnace.
3. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
Step (1) transformationreation carries out in change furnace, and change furnace is converted for axis warp-wise or shell and tube temperature change furnace.
4. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
Desulfurization and decarburization process washes process, polyglycol dimethyl ether process (Selexol) process, MEDA processes for low-temp methanol in step (2).
5. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
In step (3), CO during combustion power generation2、H2、O2Flow-rate ratio is 0~2.3:1:0.5~0.6, fuel to air equivalence is than φ=0.8~1.4;
Or the N that importation space division obtains during combustion power generation2, CO2、N2、H2、O2Flow-rate ratio is 0.2~1.3:0.1~1:1:0.5~
0.6, fuel to air equivalence is than φ=0.8~1.4.
6. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
In step (3), electricity generation system is power station gas turbine and steam turbine.
7. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
In step (4), the CO of 1,3,5- s-triazine triol of synthesis of solid product2、H2、N2Volume ratio is 1:1.5~1.7:3.0~3.4.
8. near-zero release according to claim 1, CO2The fossil energy Application way of recycling, which is characterized in that
In step (4), the actual conditions of 1,3,5- s-triazine triol of synthesis of solid product is as follows:N2 and H2 first in 15~20MPa,
NH is synthesized under the conditions of 400 DEG C~520 DEG C3, NH afterwards3With CO2Urea is synthesized first under the conditions of 10~30MPa, 185~190 DEG C
Liquid, last urea liquid is at 150~350 DEG C, 1~10Mpa synthesis of solid product, 1,3,5- s-triazine triol, while the NH released3
Return continues with, and reactor can be microwave reactor, spiral pipe reactor, and catalyst is ammonium chloride.
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