CN101818079A - System and method for preparing methane by biomass supercritical water partial oxidation method - Google Patents
System and method for preparing methane by biomass supercritical water partial oxidation method Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a system and a method for preparing methane by a biomass supercritical water partial oxidation method. The system for preparing the methane by the biomass supercritical water partial oxidation method comprises a high-pressure plunger pump, a delivery duct, a supercritical reactor, a condenser and a gas-liquid separator, wherein the high-pressure plunger pump, the supercritical reactor, the condenser and the gas-liquid separator are successively connected through the delivery duct; and the supercritical reactor is internally provided with a heater. In the invention, macromolecular carbon mixture contained in the biomass is reformed and converted into micromolecular methane, CO, H2 and the like by using the biomass as a raw material and adopting the partial oxidation method under the supercritical water condition, thus realizing development and utilization of biomass energy and replacement of natural gas, obtaining clean energy and simultaneously reducing carbon dioxide emission.
Description
Technical field
The present invention relates to a kind of preparation method of methane, more specifically saying so a kind of is raw material with biomass, under condition of supercritical water, adopts partial oxidation process to produce the method for methane.
Background technology
The fossil energy structure of China is to be auxilliary based on biomass, oil and natural gas, and this is that difference owing to the storage capacity of various fossil energies causes.So far, explored biomass charcoal reserves are 1.5 trillion tons, adopt 2,000,000,000 tons per year, can exploit 750 years, and prospective oil are 16,000 ten thousand tons, only account for about 3% of world's total amount, can exploit the time limit and have only 20.6 years; The consumption of Sweet natural gas only accounts for 2.1%.
The reserves of China's biomass are quite huge, are the important source of energy, food and the chemical feedstocks in human future as potential physical resources treasure-house.China is the world's second largest energy expenditure big country that is only second to the U.S., also is second-biggest-in-the-world Carbon emission state.Exhausted day by day along with fossil resources such as oil, biomass charcoals, under the current situation of greatly developing the polynary energy, how utilizing with carbon and hydrogen is that the biomass resource (comprising woods woods waste, agricultural wastes, feces of livestock and poultry etc.) of main component is produced CH
4Instead of natural gas and as industrial chemicals is improved the energy consumption structure of China, and both efficent use of resources developed clear energy sources again, realizes effectively substituting and solving environmental problem simultaneously of the energy, is current research emphasis and focus.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, a kind of system and method for preparing methane by biomass supercritical water partial oxidation method is provided, with biomass is raw material, under condition of supercritical water, adopt partial oxidation process, with the micromolecular methane of macromole carbon mixture transferring to of reformation, CO, H contained in the biomass
2Deng, realize the development and use of biomass energy and substituting of Sweet natural gas, reducing emission of carbon dioxide when obtaining clean energy.
The technical scheme that realizes the foregoing invention purpose is:
The system of preparing methane by biomass supercritical water partial oxidation method, comprise high pressure plunger pump, transport pipe, supercritical reaction device, condenser and gas-liquid separator, high pressure plunger pump, supercritical reaction device, condenser are connected by transport pipe successively with gas-liquid separator, in the described supercritical reaction device well heater are housed.
Technique scheme mesohigh ram pump pressurizes to the mixture of water or water and biomass, well heater is used for starting heating, reduce required heating power with the way that prolongs heat-up time, make the water that enters the supercritical reaction device and the mixture of biomass reach supercritical state..
Described biomass comprise forest tree castoff, agricultural wastes, feces of livestock and poultry.
Used supercritical reaction device both can be a tank reactor, also can be tubular reactor.
As a further improvement on the present invention, described supercritical reaction device bottom is provided with the inorganic salt separation system, and supercritical reaction device bottom also is connected with pipeline and valve.The inorganic salt that generate in the reaction process are separated by the inorganic salt separation system, and Open valve can discharge inorganic salt, avoids the damage to equipment.
As a further improvement on the present invention, on the transport pipe between described high pressure plunger pump, supercritical reaction device and the condenser, also be provided with interchanger, the delivery port of described high pressure plunger pump connects first heat exchanger channels of interchanger, the water of high pressure plunger pump output or water and biomass mixture are as cold medium input heat exchanger, and the cold medium after the heat exchange is imported the supercritical reaction device; The delivery port at described supercritical reaction device top connects second heat exchanger channels of interchanger, and the vapour gas mixture of described supercritical reaction device top output high-temperature high-pressure state is as the thermal medium input heat exchanger, and the thermal medium after the heat exchange is imported gas-liquid separator.Being provided with of interchanger can make the gas-liquid mixture that the supercritical reaction device produces and the water and the biomass mixture of high pressure plunger pump output carry out heat exchange, preheating water and biomass mixture are saved and to be added hot water and biomass mixture to the required energy of supercritical state.
As a further improvement on the present invention, described oxidant stress pump can be ram pump or compressor.
Realize that technical scheme of the present invention is:
The method of preparing methane by biomass supercritical water partial oxidation method may further comprise the steps:
(1), the water that enters the supercritical reaction device or the mixture of biomass and water are pressurizeed with high pressure plunger pump with in biomass and the water input supercritical reaction device;
(2) be full of the water of certain pressure in the reactor after, start reactor with well heater, the water static state in it is heated to the temperature of setting, make it reach supercritical state;
(3) as pressure to the 25～50Mpa of reactor, during temperature to 380～600 ℃, start high pressure plunger pump 1, regulate its flow, make it slowly to rise to rated flow 3.2L/h;
(4) supercritical water and biomass stop 30～150min in reactor 3, make macromole carbon mixture contained in the biomass be restructured as small molecules methane and CO, H through reaction
2Deng, produced simultaneously inorganic salt are deposited on the bottom of reactor 3; This moment, supercritical water was reaction medium reactant again the time;
(5) reforming reaction of biomass is thermopositive reaction, the vapour gas mixture of the high-temperature high-pressure state that comes out from reactor head carries out gas-liquid separation again after condenser condenses, the gas that comes out after gas-liquid separation is the gas based on methane, and the liquid that comes out is water of condensation.
Used supercritical reaction device both can be a tank reactor in present method, also can be tubular reactor; Production process both can be step, also can be continous way.
As the further improvement of the inventive method, above-mentioned steps further comprises the following steps: in (4)
(41) open and close two valves of reactor bottom intermittence, adopt the method that adds tap water, the inorganic salt that produce the reaction process are separated from the bottom of reactor.
As the further improvement of the inventive method, described step further comprises the following steps: in (4)
(42) to the oxygenant of supercritical reaction device input through pressurization and heating.Because the kind difference or the biomass of biomass are different with the ratio of water, when the required oxygenant of reaction is under-supply, in reactor, add oxygenant.Used oxygenant is hydrogen peroxide, liquid oxygen, oxygen-rich air, air, potassium permanganate solution or Klorvess Liquid.
As the further improvement of the inventive method, above-mentioned steps further comprises the following steps: in (5)
(51) reforming reaction of biomass is thermopositive reaction, and what come out from reactor head is the vapour gas mixture that is in high-temperature high-pressure state.For energy-conservation, earlier water or aquatic substance mixture after vapour gas mixture and the pressurization are carried out heat exchange, utilize its heat that the water after pressurizeing is carried out preheating, the vapour gas mixture after the heat exchange carries out gas-liquid separation again.
The invention provides a kind of under condition of supercritical water, with biomass is the method that raw material is produced methane, can be according to the kind of used biomass, the processing condition such as equivalent of pressure, temperature and oxygenant by regulating operating process are regulated the composition of gas production rate and gas, and depending on the circumstances or the needs of the situation whether determine whether to add catalyzer.After adopting the present invention to handle, can utilize low-grade biomass resource to produce high heating value urban biomass gas and instead of natural gas, at the clean energy of realizing having obtained when waste resource effectively utilizes high heating value, do the contribution of knowing clearly for reducing emission of carbon dioxide, have bigger economic benefit and social benefit.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the embodiment of the invention 1 preparing methane by biomass supercritical water partial oxidation method
Wherein: the 1-high pressure plunger pump; The 2-interchanger; 3-supercritical reaction device; The 4-condenser; The 5-gas-liquid separator; 6-oxygenant force (forcing) pump; 7-oxygenant well heater; The 8-transport pipe; The 9-well heater.
Embodiment
Be described further below in conjunction with embodiment.
Embodiment 1
As shown in Figure 1, the system of preparing methane by biomass supercritical water partial oxidation method, comprise high pressure plunger pump 1, transport pipe 8, supercritical reaction device 3, condenser 4 and gas-liquid separator 5, high pressure plunger pump 1, supercritical reaction device 3, condenser 4 and gas-liquid separator 5 are connected successively by transport pipe 8.Well heater 9 is housed in the supercritical reaction device 3.On the transport pipe between high pressure plunger pump 1, supercritical reaction device 3 and the condenser 4, also be provided with interchanger 2.The delivery port of high pressure plunger pump 1 connects first heat exchanger channels of interchanger 2, and the water of high pressure plunger pump 1 output or water and biomass mixture are as cold medium input heat exchanger 2, and the cold medium after the heat exchange is imported supercritical reaction device 3; The delivery port at supercritical reaction device 3 tops connects second heat exchanger channels of interchanger, and the vapour gas mixture of supercritical reaction device 3 tops output high-temperature high-pressure state is as thermal medium input heat exchanger 2, and the thermal medium after the heat exchange is imported condenser 4.The delivery port of oxygenant ram pump 6 connects the input aperture of oxygenant well heater 7, and the delivery port of oxygenant well heater 7 connects supercritical reaction device 3.
At first discarded wood shavings or the sawdust that the furniture course of processing is produced places supercritical reaction device 3, by ram pump 1 with the water pressurization after, go into supercritical reaction device 3 through interchanger 2 heat exchange are laggard.By its heater heats that carries and react, the gas vapour mixture that comes out from reactor 3 tops by condenser 4 condensations, enters gas-liquid separator 5 and carries out gas-liquid separation after interchanger 2 heat exchange, obtains gaseous product and water respectively in reactor 3.The bottom of reactor 3 is provided with the inorganic salt separation system, and regularly intermittent Open valve V1 and V2 can discharge inorganic salt, avoid the damage to equipment.
A kind of method of preparing methane by biomass supercritical water partial oxidation method may further comprise the steps:
(1) discarded wood shavings or the sawdust that produces in the furniture production process placed supercritical reaction device 3, sealing;
(2) the water A of certain flow is through ram pump 1 pressurization, by entering reactor 3 behind the interchanger 2;
(3) off-response device outlet valve, in tank reactor 3, a certain amount of water is arranged after, close ram pump 1, with well heater water is carried out static state heating;
(4) pressure in reactor 3 is to 30MPa, during temperature to 450 ℃, opens the reactor outlet valve;
(5) start ram pump 1, will be forced into 30MPa by the water A that comes in the basin, continue injecting reactor 3, the flow of pilot plunger pump 1 makes it slowly to rise to rated flow;
(6) water enters reactor 3, stops the regular hour, macromole carbon mixture contained in the wood shavings is reformed be converted into micromolecular methane, CO and H
2, the inorganic salt of generation separate by the bottom separation system;
(7) the gas vapour mixture that comes out of reactor 3 tops enters 2 pairs of cold water that enter of interchanger and carries out preheating, to make full use of its heat; Through entering gas-liquid separator 5 after condenser 4 condensations, can obtain being rich in the gaseous product of methane at the top of gas-liquid separator 5 then; The water that comes out in gas-liquid separator 5 bottoms can cycling and reutilization.
Embodiment 2
As shown in Figure 1, this example is substantially the same manner as Example 1, and different is that used raw material is withered branch, with the water pressurization, enters still formula supercritical reaction device 3 by ram pump 1 after interchanger 2 heat exchange.By its heater heats that carries and react, the gas vapour mixture that comes out from reactor 3 tops by condenser 4 condensations, enters gas-liquid separator 5 and carries out gas-liquid separation after interchanger 2 heat exchange, obtains gaseous product and water respectively in reactor 3.The bottom of reactor 3 is provided with the inorganic salt separation system, and regularly intermittent Open valve V1 and V2 can discharge inorganic salt, avoid the damage to equipment.
A kind of method of preparing methane by biomass supercritical water partial oxidation method may further comprise the steps:
(1) withered branch is packed into tank reactor 3, sealing;
(2) water of certain flow is through ram pump 1 pressurization, by entering reactor 3 behind the interchanger 2;
(3) off-response device outlet valve, in still formula supercritical reaction device 3, a certain amount of water is arranged after, close ram pump 1, with well heater water is carried out static state heating;
(3) pressure in reactor 3 is to 35MPa, during temperature to 480 ℃, opens the reactor outlet valve;
(4) start ram pump 1, will be forced into 35MPa by the water A that comes in the basin, continue injecting reactor 3, the flow of pilot plunger pump makes it slowly to rise to rated flow;
(5) water enters reactor 3, stops the regular hour, macromole carbon mixture contained in the withered branch is reformed be converted into micromolecular methane, CO and H
2, the inorganic salt of generation separate by the bottom separation system;
(6) the gas vapour mixture that comes out of reactor 3 tops enters 2 pairs of cold water that enter of interchanger and carries out preheating, to make full use of its heat; Through entering gas-liquid separator 5 after condenser 4 condensations, can obtain being rich in the gaseous product of methane at the top of gas-liquid separator 5 then; The water that comes out in gas-liquid separator 5 bottoms can cycling and reutilization.
Embodiment 3
As shown in Figure 1, this example is basic identical with example 1, and different is because used raw material is a wooden stick, with the water pressurization, enters still formula supercritical reaction device 3 by ram pump 1 after interchanger 2 heat exchange.By its heater heats that carries and react, the gas vapour mixture that comes out from reactor 3 tops by condenser 4 condensations, enters gas-liquid separator 5 and carries out gas-liquid separation after interchanger 2 heat exchange, obtains gaseous product and water respectively in reactor 3.The bottom of reactor 3 is provided with the inorganic salt separation system, and regularly intermittent Open valve V1 and V2 can discharge inorganic salt, avoid the damage to equipment.Because wooden stick is relatively fine and close, and is under-supply as oxygenant by supercritical water merely when reacting in supercritical reaction device 3, so total system increased oxygenant ram pump 6 and oxygenant well heater 7, so that to system's supplemental oxidant.。A kind of method of preparing methane by biomass supercritical water partial oxidation method may further comprise the steps:
(1) at first with the spillikin of timber addition worker 10 * 10 * 50mm of passing into disuse, is positioned in the still formula supercritical reaction device 3 sealing;
(2) the water A of certain flow is through ram pump 1 pressurization, goes into supercritical reaction device 3 by interchanger 2 is laggard;
(3) outlet valve of off-response device 3, in tank reactor 3, a certain amount of water is arranged after, close ram pump, the well heater that carries with reactor 3 carries out the static state heating to water;
(4) pressure in reactor 3 is to 45MPa, during temperature to 550 ℃, opens the outlet valve of reactor 3;
(5) start ram pump 1, water is forced into 45MPa, continue injecting reactor 3, the flow of pilot plunger pump 1 makes it slowly to rise to rated flow;
(6) water enters reactor 3, stops the regular hour, macromole carbon mixture contained in the wooden stick is reformed transferred to methane, CO and H
2Deng micro-molecular gas, the gas vapour mixture that comes out from the top of reactor 3 enters gas-liquid separator 5 after condenser 4 condensations after 2 pairs of cold water of interchanger carry out preheating, obtain gaseous product at the top, the water that the bottom obtains can be recycled.The inorganic salt that generate in the reaction process separate by the separation system of reactor 3 bottoms;
(7) because wooden stick is dense, only depend on supercritical water the oxygenant deficiency can occur as reaction medium, reforming reaction can't obtain expecting product, therefore adopts oxygenant ram pump 6 and well heater 7, and system is replenished hydrogen peroxide.If the oxidant content that replenishes is less, then well heater 7 need not be enabled.
Embodiment 4
As shown in Figure 1, this example is basic identical with example 3, and different is that oxygenant is liquid oxygen.
The method of biomass-making methane under a kind of condition of supercritical water may further comprise the steps:
(1) at first with the spillikin of timber addition worker 10 * 10 * 50mm of passing into disuse, is positioned in the still formula supercritical reaction device 3 sealing;
(2) the water A of certain flow is through ram pump 1 pressurization, goes into supercritical reaction device 3 by interchanger 2 is laggard;
(3) outlet valve of off-response device 3, in tank reactor 3, a certain amount of water is arranged after, close ram pump, the well heater that carries with reactor 3 carries out the static state heating to water;
(4) pressure in reactor 3 is to 45MPa, during temperature to 550 ℃, opens the outlet valve of reactor 3;
(5) start ram pump 1, water is forced into 45MPa, continue injecting reactor 3, the flow of pilot plunger pump 1 makes it slowly to rise to rated flow;
(6) water enters reactor 3, stops the regular hour, macromole carbon mixture contained in the wooden stick is reformed transferred to methane, CO and H
2Deng micro-molecular gas, the gas vapour mixture that comes out from the top of reactor 3 enters gas-liquid separator 5 after condenser 4 condensations after 2 pairs of cold water of interchanger carry out preheating, obtain gaseous product at the top, the water that the bottom obtains can be recycled.The inorganic salt that generate in the reaction process separate by the separation system of reactor 3 bottoms;
(7) because wooden stick is dense, only depend on supercritical water the oxygenant deficiency can occur as reaction medium, reforming reaction can't obtain expecting product, therefore adopts oxygenant ram pump 6 and well heater 7, and system is replenished liquid oxygen; If the oxidant content that replenishes is less, then well heater 7 need not be enabled.
Embodiment 5
As shown in Figure 1, this example is basic identical with example 3, and different is that oxygenant is a potassium permanganate solution., may further comprise the steps:
(1) at first with the spillikin of timber addition worker 10 * 10 * 50mm of passing into disuse, is positioned in the still formula supercritical reaction device 3; The water A of certain flow is through ram pump 1 pressurization, goes into supercritical reaction device 3 by interchanger 2 is laggard;
(2) outlet valve of off-response device 3, in tank reactor 3, a certain amount of water is arranged after, close ram pump, the well heater that carries with reactor 3 carries out the static state heating to water;
(3) pressure in reactor 3 is to 45MPa, during temperature to 550 ℃, opens the outlet valve of reactor 3;
(4) start ram pump 1, water is forced into 45MPa, continue injecting reactor 3, the flow of pilot plunger pump 1 makes it slowly to rise to rated flow;
(5) water enters reactor 3, stops the regular hour, macromole carbon mixture contained in the wooden stick is reformed transferred to methane, CO and H
2Deng micro-molecular gas, the gas vapour mixture that comes out from the top of reactor 3 enters gas-liquid separator 5 after condenser 4 condensations after 2 pairs of cold water of interchanger carry out preheating, obtain gaseous product at the top, the water that the bottom obtains can be recycled.The inorganic salt that generate in the reaction process separate by the separation system of reactor 3 bottoms;
(6) because wooden stick is dense, only depend on supercritical water the oxygenant deficiency can occur as reaction medium, reforming reaction can't obtain expecting product, therefore adopts oxygenant ram pump 6 and well heater 7, and system is replenished potassium permanganate solution; If the oxidant content that replenishes is less, well heater 7 can be enabled.
Embodiment 6
As shown in Figure 1, a kind of continous way system of preparing methane by biomass supercritical water partial oxidation method stirs evenly with water feces of livestock and poultry by mixing, with ram pump 1 with its pressurization after, go into supercritical reaction device 3 through interchanger 2 heat exchange are laggard.By its heater heats that carries and react, the gas vapour mixture that comes out from reactor 3 tops by condenser 4 condensations, enters gas-liquid separator 5 and carries out gas-liquid separation after interchanger 2 heat exchange, obtains gaseous product and water respectively in reactor 3.The bottom of reactor 3 is provided with the inorganic salt separation system, and regularly intermittent Open valve V1 and V2 can discharge inorganic salt, avoid the damage to equipment.
A kind of method of preparing methane by biomass supercritical water partial oxidation method may further comprise the steps:
(1) with feces of livestock and poultry with after water mixes, through ram pump 1 pressurization, by entering reactor 3 behind the interchanger 2;
(2) off-response device outlet valve, in tank reactor 3, certain amount of mixed solution is arranged after, close ram pump 1, with well heater it is carried out static state heating;
(3) pressure in reactor 3 is to 30MPa, during temperature to 450 ℃, opens the reactor outlet valve;
(4) start ram pump 1, will be forced into 30MPa by the mixed liquor A of coming in the basin, continue injecting reactor 3, the flow of pilot plunger pump 1 makes it slowly to rise to rated flow;
(5) water enters reactor 3, stops the regular hour, macromole carbon mixture contained in the feces of livestock and poultry is reformed be converted into micromolecular methane, CO and H
2, the inorganic salt of generation separate by the bottom separation system;
(6) the gas vapour mixture that comes out of reactor 3 tops enters 2 pairs of cold water that enter of interchanger and carries out preheating, to make full use of its heat; Through entering gas-liquid separator 5 after condenser 4 condensations, can obtain being rich in the gaseous product of methane at the top of gas-liquid separator 5 then; The water that comes out in gas-liquid separator 5 bottoms can cycling and reutilization.
Claims (10)
1. the production system of a preparing methane by biomass supercritical water partial oxidation method, it is characterized in that, this system comprises high pressure plunger pump (1), transport pipe (8), supercritical reaction device (3), condenser (4) and gas-liquid separator (5), and high pressure plunger pump (1), supercritical reaction device (3), condenser (4) and gas-liquid separator (5) are connected successively by transport pipe (8); Well heater (9) is housed in the supercritical reaction device (3).
2. the production system of preparing methane by biomass supercritical water partial oxidation method according to claim 1, it is characterized in that, described supercritical reaction device (3) bottom is provided with the inorganic salt separation system, and supercritical reaction device (3) bottom also is connected with transport pipe (8) and valve (V).
3. the production system of preparing methane by biomass supercritical water partial oxidation method according to claim 1, it is characterized in that, on the transport pipe (8) between described high pressure plunger pump (1), supercritical reaction device (3) and the condenser (4), also be provided with interchanger (2), the delivery port of described high pressure plunger pump (1) connects first heat exchanger channels of interchanger, the water of high pressure plunger pump (1) output or water and biomass mixture are as cold medium input heat exchanger (2), and water after heat exchange or water and biomass mixture are imported supercritical reaction device (3); The delivery port at described supercritical reaction device (3) top connects second heat exchanger channels of interchanger, the vapour gas mixture of described supercritical reaction device (3) top output high-temperature high-pressure state is as thermal medium input heat exchanger (2), and the thermal medium after the heat exchange is imported condenser (4).
4. the production system of preparing methane by biomass supercritical water partial oxidation method according to claim 1, it is characterized in that, also be provided with oxidant stress pump (6) and oxygenant well heater (7) in the described production system, the delivery port of described oxidant stress pump (6) connects the input aperture of oxygenant well heater (7), and the delivery port of oxygenant well heater (7) connects supercritical reaction device (3).
5. the method for a preparing methane by biomass supercritical water partial oxidation method is characterized in that, this method may further comprise the steps:
(1), the water that enters the supercritical reaction device or the mixture of biomass and water are pressurizeed with high pressure plunger pump with in biomass and the water input supercritical reaction device;
(2) be full of the water of certain pressure in the reactor after, start reactor with well heater, the water static state in it is heated to the temperature of setting, make it reach supercritical state;
(3) as pressure to the 25～50MPa of reactor, during temperature to 380～600 ℃, start high pressure plunger pump 1, regulate its flow, make it slowly to rise to rated flow 3.2L/h;
(4) supercritical water and biomass stop 30～150min in reactor 3, make macromole carbon mixture contained in the biomass through reaction reform out small molecules methane and CO, H
2, produced simultaneously inorganic salt are deposited on the bottom of reactor 3;
(5) reforming reaction of biomass is thermopositive reaction, the vapour gas mixture of the high-temperature high-pressure state that comes out from reactor head carries out gas-liquid separation again after condenser condenses, the gas that comes out after gas-liquid separation is the gas based on methane, and the liquid that comes out is water of condensation.
6. the method for preparing methane by biomass supercritical water partial oxidation method according to claim 6 is characterized in that, above-mentioned steps further comprises the following steps: in (4)
(41) open and close two valves of reactor bottom intermittence, adopt the method that adds tap water, the inorganic salt that produce the reaction process are separated from the bottom of reactor.
7. the method for preparing methane by biomass supercritical water partial oxidation method according to claim 6 is characterized in that, described step further comprises the following steps: in (4)
(42) to the oxygenant of supercritical reaction device input through pressurization or heating and heating.
8. the method for preparing methane by biomass supercritical water partial oxidation method according to claim 6 is characterized in that, above-mentioned steps further comprises the following steps: in (5)
(51) vapour gas mixture that reactor is exported and the water after the pressurization or the mixed solution of water and biomass carry out heat exchange, utilize its heat that the water after pressurizeing or the mixed solution of water and biomass are carried out preheating, and the vapour gas mixture after the heat exchange carries out condensation again.
9. the method for preparing methane by biomass supercritical water partial oxidation method according to claim 6, it is characterized in that, described step specifically comprises in (1): in the supercritical reaction device of 11) earlier a certain amount of solid-state difficult pulverizing biomass being packed into (3), water injects supercritical reaction device (3) through ram pump (1) pressurization back.
10. the method for preparing methane by biomass supercritical water partial oxidation method according to claim 6, it is characterized in that, described step specifically comprises in (1): after 12) mixed solution of the biomass that will easily pulverize and water pressurizes through ram pump (1), inject supercritical reaction device (3).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107406288A (en) * | 2015-03-26 | 2017-11-28 | Scw系统公司 | For processing the method and system of the slurry comprising organic component |
| CN108251093A (en) * | 2018-01-31 | 2018-07-06 | 南京工业大学 | The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction |
| CN109095438A (en) * | 2018-09-13 | 2018-12-28 | 东南大学 | A kind of biomass multistage conversion joint device for producing hydrogen and its working method |
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2010
- 2010-02-03 CN CN201019026022A patent/CN101818079A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107406288A (en) * | 2015-03-26 | 2017-11-28 | Scw系统公司 | For processing the method and system of the slurry comprising organic component |
| CN108251093A (en) * | 2018-01-31 | 2018-07-06 | 南京工业大学 | The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction |
| CN109095438A (en) * | 2018-09-13 | 2018-12-28 | 东南大学 | A kind of biomass multistage conversion joint device for producing hydrogen and its working method |
| CN109095438B (en) * | 2018-09-13 | 2020-06-02 | 东南大学 | Biomass multistage conversion combined hydrogen production device and working method thereof |
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