阅读说明：本技术 一种利用太阳能重整甲烷/二氧化碳制合成气的装置及方法 (Device and method for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy ) 是由 易群 任志立 史利娟 崔阳 高丹 张衡 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种利用太阳能重整甲烷/二氧化碳制合成气的装置及方法。属于能源化工领域。利用太阳能聚集装置和光电转换装置强化太阳能并将其转化为热能和电能,用来加热重整反应室,以提供甲烷/二氧化碳重整反应所需的热量和高温条件,实现甲烷/二氧化碳重整制合成气的目的。本发明通过利用免费清洁的太阳能资源,提供甲烷/二氧化碳重整反应过程所需高品位热量和高温反应条件,实现了温室气体CH-(4)与CO-(2)的绿色转化利用。(The invention discloses a device and a method for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy. Belongs to the field of energy chemical industry. The solar energy is intensified by the solar energy gathering device and the photoelectric conversion device and is converted into heat energy and electric energy which are used for heating the reforming reaction chamber so as to provide heat and high-temperature conditions required by the methane/carbon dioxide reforming reaction, and the aim of reforming the methane/carbon dioxide to prepare the synthesis gas is fulfilled. The invention provides high-grade heat and high-temperature reaction conditions required by the methane/carbon dioxide reforming reaction process by utilizing free and clean solar energy resources, thereby realizing the greenhouse gas CH 4 With CO 2 The green color of the product is utilized.)

1. A device for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy is characterized in that: the device comprises a solar energy gathering device, a photoelectric conversion device, a solar energy automatic tracking device, a reforming reaction chamber, a temperature control heater, a gas buffer tank and a heat exchanger;

the solar energy gathering device consists of a Fresnel lens, an annular stainless steel sheet and a supporting framework; the bottom of the supporting framework is a cylindrical stainless steel base, the top of the supporting framework is an inverted umbrella-shaped structure formed by welding a plurality of common stainless steel bars, annular stainless steel sheets with different diameters are fixed above the supporting framework through welding, and the Fresnel lens is fixed in a circular groove at the center of the annular stainless steel sheet with the smallest inner diameter;

the photoelectric conversion device consists of a foldable solar silicon crystal plate cell and a storage battery; the solar silicon crystal plate cells are fixed right below the solar energy gathering device and are arranged in a ring shape; the solar silicon crystal plate battery converts solar energy into electric energy to be stored in the storage battery;

the solar automatic tracking device consists of a photosensitive tracker, a controller, a transverse rotator and a longitudinal rotator; the photosensitive tracker is fixed on the solar energy gathering device and is vertical to the lens, the transverse rotator and the longitudinal rotator are fixed at the bottom of the supporting frame, the photosensitive tracker transmits an illumination signal to the controller, and the controller controls the transverse rotator and the longitudinal rotator so as to ensure that the photosensitive tracker receives the illumination direction;

the reforming reaction chamber consists of a tubular reactor and heat conducting oil; the tubular reactor is coated by a heat conduction material with excellent heat conduction medium coefficient, a gap between the tubular reactor and the heat conduction material is filled by heat conduction oil, and the reforming reaction chamber is fixed in the middle of the support framework;

the temperature control heater consists of a temperature sensor and a heating resistance wire tube; the temperature sensor is used for measuring and monitoring the temperature of the heat-conducting oil in the reforming reaction chamber; the heating resistance wire tube is controlled by the temperature sensor and is used for heating heat-conducting oil;

an inlet of the gas buffer tank is connected with a methane gas pipeline and a carbon dioxide pipeline, and methane and carbon dioxide gas are mixed in the gas buffer tank to obtain a mixed gas I which enters the heat exchanger;

the gas at the heat flow inlet of the heat exchanger is synthesis gas III prepared in the reforming reaction chamber, and the mixed gas I entering the heat exchanger exchanges heat with the synthesis gas III to obtain preheated mixed gas II entering the reforming reaction chamber for reaction.

2. The apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy according to claim 1, wherein: the reforming reaction chamber is positioned at the focus of the solar energy gathering device, sunlight gathers and irradiates the reaction chamber, then internal heat conduction oil uniformly heats the tubular reactor, and the temperature of the internal reaction area of the tubular reactor is kept balanced.

3. The apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy according to claim 1, wherein: the solar energy gathering device controls the light gathering direction of the solar energy gathering device through the solar energy automatic tracking device, ensures that the solar radiation angle is vertical to the solar energy gathering device, and realizes the maximum light gathering.

4. The apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy according to claim 1, wherein: the solar automatic tracking device tracks sunlight through the induction of the photosensitive tracker, the photosensitive tracker is fixed on the solar gathering device, a main optical axis of the solar gathering device is always parallel to solar rays, the direction with the strongest illumination is induced, and a signal is transmitted to the solar automatic tracking device, so that the transverse rotator and the longitudinal rotator can drive the solar gathering device to adjust in multiple directions.

5. The apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy according to claim 1, wherein: the photoelectric conversion device can convert surplus solar energy in a time with strong light intensity into electric energy to be stored, the photoelectric conversion device is composed of a plurality of foldable solar silicon crystal plate cells, the silicon crystal plates are annularly arranged, the number of the silicon crystal plates is set according to the area of a single silicon crystal plate and the size of the scale of the solar energy gathering device, and the number of the silicon crystal plates receiving illumination is adjusted according to the sunlight intensity under the condition that the energy requirement required by the temperature of the reforming reaction chamber is ensured.

6. The apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy according to claim 1, wherein: the temperature control heating device can monitor the temperature of the reforming reaction chamber in real time, and when the temperature of the reaction chamber is less than 800 ℃, the electric energy in the storage battery is released to heat the reforming reaction chamber, so that the temperature of the reforming reaction chamber is maintained at 800 ℃ and 900 ℃.

7. The apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy according to claim 1, wherein: the heat exchanger exchanges heat between the mixed gas I at the outlet of the gas buffer tank and the synthesis gas III at the outlet of the reforming reaction chamber.

8. A method for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy, which adopts the device for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy according to any one of claims 1 to 7, and is characterized in that: the method comprises the following steps:

a. methane passes through a methane gas pipeline, and carbon dioxide enters a gas buffer tank through a carbon dioxide gas pipeline;

b. in a gas buffer tank, mixing methane and carbon dioxide according to the volume ratio of 1: 4-4: 1 to obtain a mixed gas I, and then feeding the mixed gas I into a heat exchanger;

c. introducing the mixed gas II preheated in the heat exchanger into a reforming reaction chamber for reaction; ce is selected as the catalyst in the tubular reactor_1-xNi_xO₂、CeO₂-MgO、Ni/CeAlO₃-Al₂O₃、yCe-Ni-SiO₂One or more catalysts are used, the reforming reaction time is 1-50 h, and a product synthesis gas III is obtained, wherein the synthesis gas III mainly comprises carbon monoxide and hydrogen; wherein x represents the content of Ni, y represents the content of Ce, and y is 0.5-5.0%.

Technical Field

The invention relates to a device and a method for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy, belonging to the field of energy and chemical industry.

Background

The current global warming causes a series of ecological environment problems, saves energy and reduces energyThe green discharge has developed into an important issue for the development of the world. CH (CH)₄With CO₂Is the main component of greenhouse gases, how to realize CH₄With CO₂The emission reduction control is the key for slowing down the greenhouse effect. CH (CH)₄/CO₂Reforming reaction may be with CH₄With CO₂Conversion to produce feed gases CO and H₂Can be used for the synthesis production of downstream chemicals and liquid fuels such as methanol, dimethyl ether, olefin, aromatic hydrocarbon, gasoline and diesel oil, and the like, and realizes the greenhouse gas CH₄With CO₂The important technology of high added value conversion and utilization has important significance for reducing greenhouse gas emission. However, CH₄/CO₂The reforming reaction is a strong endothermic process, the required temperature is as high as 800-₄/CO₂The heat required for reforming is mainly supplied by burning fossil fuel or electric heating, so that the energy consumption is high, and simultaneously, a large amount of CO is indirectly caused₂And (5) discharging. Therefore, how to seek an inexpensive clean high temperature heat source to provide CH₄/CO₂The heat required for the reforming reaction is CH₄/CO₂The development and application of reforming technology are critical.

Chinese patent CN107919848A discloses an annular linear fresnel high power condenser, which adopts a point condensing manner to greatly improve the condensing ratio of the condenser, greatly improve the energy density after condensing compared with linear condensing, and does not change the frequency and wavelength of natural sunlight, and has an automatic tracking technology of dual-axis tracking to ensure that sunlight always keeps direct projection, and the light source after condensing reinforcement has higher practical value.

Topic group of professor Thomas Moriarty in National Renewable Energy Laboratory (NREL) ((Nature Energy2019, DOI 10.1038/s41560-020-0598-5) designed and prepared by the leading international union research team, the six-junction laminated solar cell based on the III-V group heterojunction semiconductor is effectively overcome by optimizing the preparation process and the structure, the lattice mismatch problem of different crystals is reduced, the internal resistance is reduced, the phase separation is inhibited, and the six-junction laminated solar cell is enabled to beThe performance of the cell device is remarkably improved, the device obtains 47.1% of authentication efficiency under the condition of light concentration (143 sunlight irradiation intensities), the highest photoelectric conversion efficiency value of the solar cell device in history of mankind is created, and the whole device can still obtain nearly 40% of conversion efficiency even under the condition of no light concentration.

Disclosure of Invention

The invention aims to provide a device and a method for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy.

According to the invention, through the high-power light-gathering solar device, the solar light-gathering effect is improved, the grade and quality of solar energy are improved, a high-temperature heat source is obtained, and CH is provided₄/CO₂The heat required by the reforming reaction is utilized to supply heat to CH₄/CO₂The reforming reaction produces synthesis gas.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy, which comprises:

the solar energy gathering device consists of a Fresnel lens, an annular stainless steel sheet and a supporting framework; the bottom of the supporting framework is a cylindrical stainless steel base, the top of the supporting framework is an inverted umbrella-shaped structure formed by welding a plurality of common stainless steel bars, annular stainless steel sheets with different diameters are fixed above the supporting framework through welding, and the Fresnel lens is fixed at the center of the annular stainless steel sheet with the smallest inner diameter;

the photoelectric conversion device consists of a foldable solar silicon crystal plate cell and a storage battery; the solar silicon crystal plate cells are fixed right below the solar energy gathering device and are arranged in a ring shape; the solar silicon crystal plate battery converts solar energy into electric energy to be stored in the storage battery;

the solar automatic tracking device consists of a photosensitive tracker, a controller, a transverse rotator and a longitudinal rotator; the photosensitive tracker is fixed on the solar energy gathering device and is vertical to the lens, the transverse rotator and the longitudinal rotator are fixed at the bottom of the supporting frame, the photosensitive tracker transmits an illumination signal to the controller, and the controller controls the transverse rotator and the longitudinal rotator to ensure that the photosensitive tracker receives the illumination direction;

the reforming reaction chamber consists of a tubular reactor (the tubular reactor is a tubular channel and provides a gas reaction place) and heat-conducting oil; the tubular reactor is coated by a heat conduction material with excellent heat conduction medium coefficient, a gap between the tubular reactor and the heat conduction material is filled by heat conduction oil, and the reforming reaction chamber is fixed in the middle of the support framework;

the temperature control heater consists of a temperature sensor and a heating resistance wire tube; the temperature sensor is used for measuring and monitoring the temperature of the heat-conducting oil in the reforming reaction chamber; the heating resistance wire tube is controlled by the temperature sensor and is used for heating heat-conducting oil;

an inlet of the gas buffer tank is connected with a methane gas pipeline and a carbon dioxide pipeline, and methane and carbon dioxide gas are mixed in the gas buffer tank to obtain a mixed gas I which enters the heat exchanger;

the gas at the heat flow inlet of the heat exchanger is synthesis gas III prepared in the reforming reaction chamber, and the mixed gas I entering the heat exchanger exchanges heat with the synthesis gas III to obtain preheated mixed gas II entering the reforming reaction chamber for reaction.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, wherein a reforming reaction chamber is positioned at the focus of a solar energy gathering device, sunlight is gathered and irradiated to the reaction chamber, internal heat conduction oil uniformly heats a tubular reactor, and the temperature of an internal reaction area of the tubular reactor is kept balanced.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, which is characterized in that a solar energy automatic tracking device tracks sunlight by sensing of a photosensitive tracker, the photosensitive tracker is fixed on a solar energy gathering device, so that a main optical axis of the solar energy gathering device is always parallel to sunlight, the direction with the strongest illumination is sensed, a signal is transmitted to the solar energy automatic tracking device, and a transverse rotator and a longitudinal rotator can drive the solar energy gathering device to adjust in multiple directions.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, wherein a photoelectric conversion device can convert surplus solar energy in a time with strong light intensity into electric energy to be stored, the photoelectric conversion device is composed of a plurality of foldable solar silicon crystal plate cells, the silicon crystal plates are annularly arranged, the number of the silicon crystal plates can be set according to the area of a single silicon crystal plate and the scale size of a solar energy gathering device, and the number of the silicon crystal plates receiving illumination can be adjusted according to the sunlight intensity under the condition of ensuring the energy requirement required by the temperature of a reforming reaction chamber.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, wherein the temperature control heating device can monitor the temperature of a reforming reaction chamber in real time, and when the temperature of the reaction chamber is less than 800 ℃, the electric energy in a storage battery can be released to heat the reforming reaction chamber, so that the temperature of the reforming reaction chamber is maintained at 800 ℃ and 900 ℃.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy.

The invention provides a method for preparing synthesis gas by reforming methane/carbon dioxide by using solar energy, which comprises the following steps:

a. passing methane through a methane gas pipeline and carbon dioxide through a carbon dioxide gas pipeline;

b. in a gas buffer tank, mixing methane and carbon dioxide according to the volume ratio of 1: 4-4: 1 to obtain a mixed gas I, and then allowing the mixed gas I to enter a heat exchanger for heat exchange;

c. introducing the mixed gas II preheated in the heat exchanger into a reforming reaction chamber for reaction; ce can be selected as the catalyst in the tubular reactor_1-xNi_xO₂(wherein x represents the content of Ni), CeO₂-MgO、Ni/CeAlO₃-Al₂O₃、yCe-Ni-SiO₂(it isY represents the content of Ce, and is 0.5-5.0%), and one or more catalysts are used, the reforming reaction time is 1-50 h, and the product synthesis gas III is obtained, wherein the synthesis gas III mainly comprises carbon monoxide and hydrogen;

the invention has the beneficial effects that:

after the solar energy is condensed and strengthened, high-quality and high-grade energy can be obtained and converted into heat energy and electric energy which can be used as a heat source required by the methane/carbon dioxide reforming reaction. Cheap and clean solar energy resources are sustainably and stably converted into heat required by reforming reaction of greenhouse gases methane and carbon dioxide to produce high-quality synthesis gas which can be used for synthesizing downstream high-added-value chemicals and liquid fuels, and renewable energy solar energy and CH are realized₄/CO₂The purposes of value improvement, energy conservation and emission reduction in the process of utilizing energy resources are achieved.

Drawings

FIG. 1 is a diagram of reforming CH by using solar energy₄/CO₂Schematic diagram of a device for producing synthesis gas.

FIG. 2 is a diagram of reforming CH by using solar energy₄/CO₂A process flow diagram for making synthesis gas.

Fig. 3 is a light condensing principle diagram of the solar energy concentrating apparatus.

FIG. 4 is a top view of the arrangement of the support frame, solar silicon panel cells, and reaction chamber housing assembly; (plan view of FIG. 1)

In the figure: the system comprises a Fresnel lens 1, an annular stainless steel sheet 2, a supporting framework 3, a solar silicon crystal plate battery 4, a storage battery 5, a photosensitive tracker 6, a controller 7, a transverse rotator 8, a longitudinal rotator 9, a tubular reactor 10, a reaction chamber shell 11, heat conducting oil 12, a temperature sensor 13, a heating resistance wire tube 14, a methane gas pipeline 15, a carbon dioxide pipeline 16, a gas buffer tank 17, a heat exchanger 18 and a synthesis gas outlet 19.

Detailed Description

The present invention is further illustrated by, but is not limited to, the following examples.

As shown in fig. 1 to 4, an apparatus for producing synthesis gas by reforming methane/carbon dioxide using solar energy includes:

the solar energy gathering device comprises a Fresnel lens 1, an annular stainless steel sheet 2 and a supporting framework 3, wherein the Fresnel lens 1 and the annular stainless steel sheet 2 are fixed on the supporting framework 3 in a trapezoidal mode, the annular stainless steel sheet 2 is arranged in parallel in a plurality of groups, and the diameter of each group is gradually increased; the bottom of the supporting framework 3 is a cylindrical stainless steel base, the top of the supporting framework is an inverted umbrella-shaped structure formed by welding a plurality of common stainless steel bars, the annular stainless steel sheets 2 with different diameters are fixed on the supporting framework 3 through welding, and the Fresnel lens 1 is fixed at the center of the annular stainless steel sheet 2 with the smallest inner diameter;

the photoelectric conversion device consists of a foldable solar silicon crystal plate cell 4 and a storage battery 5; the solar silicon crystal plate cells 4 are fixed right below the solar energy gathering device and are arranged in a ring shape; the solar silicon crystal plate cell 4 converts solar energy into electric energy to be stored in the storage battery 5;

the solar automatic tracking device consists of a photosensitive tracker 6, a controller 7, a transverse rotator 8 and a longitudinal rotator 9; the photosensitive tracker is fixed on the solar energy gathering device and is vertical to the Fresnel lens 1, the transverse rotator 8 and the longitudinal rotator 9 are fixed at the bottom of the supporting frame 3, the photosensitive tracker 6 transmits an illumination signal to the controller 7, and the controller 7 controls the transverse rotator 8 and the longitudinal rotator 9 to ensure that the photosensitive tracker 6 receives the illumination direction;

the reforming reaction chamber consists of a tubular reactor 10 and heat conducting oil 12; the tubular reactor 10 is coated by a heat conduction material with excellent heat conduction medium coefficient, a gap between the tubular reactor 10 and the heat conduction material is filled by heat conduction oil 12, and the reforming reaction chamber is fixed in the middle of the support framework 3;

the temperature control heater consists of a temperature sensor 13 and a heating resistance wire tube 14; the temperature sensor 13 is used for measuring and monitoring the temperature of the heat-conducting oil in the reforming reaction chamber; the heating resistance wire tube 14 is controlled by a temperature sensor and is used for heating the heat conduction oil 12;

an inlet of the gas buffer tank 17 is connected with a methane gas pipeline 15 and a carbon dioxide pipeline 16, and methane and carbon dioxide gas are mixed in the gas buffer tank 17 to obtain a mixed gas I which enters a heat exchanger 18;

the gas at the heat flow inlet of the heat exchanger 18 is the synthesis gas III prepared in the reforming reaction chamber, and the mixed gas I entering the heat exchanger 18 exchanges heat with the synthesis gas III to obtain preheated mixed gas II entering the reforming reaction chamber for reaction.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, wherein a reforming reaction chamber is positioned at the focus of a solar energy gathering device, sunlight is gathered and irradiated to the reaction chamber, internal heat conduction oil uniformly heats a tubular reactor, and the temperature of an internal reaction area of the tubular reactor is kept balanced.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, which is characterized in that a solar energy automatic tracking device tracks sunlight by sensing of a photosensitive tracker, the photosensitive tracker is fixed on a solar energy gathering device, so that a main optical axis of the solar energy gathering device is always parallel to sunlight, the direction with the strongest illumination is sensed, a signal is transmitted to the solar energy automatic tracking device, and a transverse rotator and a longitudinal rotator can drive the solar energy gathering device to adjust in multiple directions.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, wherein a photoelectric conversion device can convert surplus solar energy in a time with strong light intensity into electric energy to be stored, the photoelectric conversion device is composed of a plurality of foldable solar silicon crystal plate cells, the silicon crystal plates are annularly arranged, the number of the silicon crystal plates can be set according to the area of a single silicon crystal plate and the scale size of a solar energy gathering device, and the number of the silicon crystal plates receiving illumination can be adjusted according to the sunlight intensity under the condition of ensuring the energy requirement required by the temperature of a reforming reaction chamber.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy, wherein the temperature control heating device can monitor the temperature of a reforming reaction chamber in real time, and when the temperature of the reaction chamber is less than 800 ℃, the electric energy in a storage battery can be released to heat the reforming reaction chamber, so that the temperature of the reforming reaction chamber is maintained at 800 ℃ and 900 ℃.

The invention provides a device for preparing synthesis gas by reforming methane/carbon dioxide by solar energy.

Example 1

As shown in fig. 1, methane is passed through a methane gas line and carbon dioxide is passed through a carbon dioxide gas line. In the gas buffer tank, methane and carbon dioxide are mixed according to the volume ratio of 1:1 to obtain mixed gas I, the mixed gas I is introduced into a heat exchanger for heat exchange, and the heat exchange coefficient of the heat exchanger is 2000W/m²K, heat exchange area 4 m²Preheating the mixed gas I to 300 ℃; introducing the preheated mixed gas II into a reforming reaction chamber at the rate of 160000 mL/h for reaction; in the reforming reaction chamber, 500g of Ni/MgO is selected as a catalyst in the tubular reactor; the solar energy gathering device and the irradiation direction of the sunlight are adjusted by the solar energy automatic tracking device, and the irradiation intensity is 1000W/m²The area of the solar energy condensing device receiving vertical illumination is 1.2m²All 12 solar silicon panel cells on the photoelectric conversion device are turned on to receive illumination, and 30% of light energy is converted into electric energy and stored in a storage battery; the temperature control heating device monitors the temperature of the reforming reaction chamber in real time and sets the reaction temperature to 800 ℃; the heat conductivity coefficient of the heat conducting oil is 400W/m²K, 1 kg of heat conducting oil, and the heat conducting oil is heated by a temperature control heater when the temperature is lower than 800 ℃. At the moment, the illumination is sufficient, and the storage battery does not provide electric quantity for heating; the reaction time was 1h and synthesis gas III was finally obtained, consisting of 145000 ml carbon monoxide, 135000 ml hydrogen, 10000 ml methane and 5000 ml carbon dioxide.

Example 2

As shown in fig. 1, methane is passed through a methane gas line and carbon dioxide is passed through a carbon dioxide gas line. In a gas buffer tank, methane and carbon dioxide are in bulkMixing the mixed gas I according to the volume ratio of 2:1 to obtain mixed gas I, introducing the mixed gas I into a heat exchanger for heat exchange, wherein the heat exchange coefficient of the heat exchanger is 1800W/m²K, heat exchange area 4 m²Preheating the mixed gas I to 300 ℃; introducing the preheated mixed gas II into a reforming reaction chamber at the speed of 150000 mL/h for reaction; in the reforming reaction chamber, 400 g of Ni/CeAlO is selected as the catalyst in the tubular reactor₃-Al₂O₃(ii) a The solar energy gathering device and the irradiation direction of the sunlight are adjusted by the solar energy automatic tracking device, and the irradiation intensity is 900W/m²The area of the solar energy condensing device receiving vertical illumination is 1.2m²Opening 8 solar silicon panel cells (other 4 cells are folded) on the photoelectric conversion device to receive illumination, converting 25% of light energy into electric energy and storing the electric energy in a storage battery; the temperature control heating device monitors the temperature of the reforming reaction chamber in real time and sets the reaction temperature to 800 ℃; the heat conductivity coefficient of the heat conducting oil is 400W/m²K, 1 kg of heat conducting oil, and the heat conducting oil is heated by a temperature control heater when the temperature is lower than 800 ℃. At the moment, the illumination is sufficient, and the storage battery does not provide electric quantity for heating; the reaction time was 1h and a synthesis gas III was finally obtained consisting of 85000 ml carbon monoxide, 75000 ml hydrogen, 60000 ml methane and 5000 ml carbon dioxide.

Example 3

As shown in fig. 1, methane is passed through a methane gas line and carbon dioxide is passed through a carbon dioxide gas line. In the gas buffer tank, methane and carbon dioxide are mixed according to the volume ratio of 1:1 to obtain mixed gas I, the mixed gas I is introduced into a heat exchanger for heat exchange, and the heat exchange coefficient of the heat exchanger is 1800W/m²K, heat exchange area of 2m²Preheating the mixed gas I to 350 ℃; introducing the preheated mixed gas II into a reforming reaction chamber at the rate of 180000 mL/h for reaction; in the reforming reaction chamber, the catalyst in the tubular reactor is 450 gNi/CeAlO₃-Al₂O₃(ii) a The solar energy gathering device and the irradiation direction of the sunlight are adjusted by the solar energy automatic tracking device, and the irradiation intensity is 1050W/m²The area of the solar energy condensing device receiving vertical illumination is 1.2m²Photoelectric conversion deviceThe upper 12 solar silicon crystal plate batteries are all turned on to receive illumination, 35% of light energy is converted into electric energy and stored in the storage battery; the temperature control heating device monitors the temperature of the reforming reaction chamber in real time and sets the reaction temperature to 900 ℃; the heat conductivity coefficient of the heat conducting oil is 400W/m²K, 1 kg of heat conducting oil, and the heat conducting oil is heated by a temperature control heater when the temperature is lower than 900 ℃. At the moment, the illumination is sufficient, and the storage battery does not provide electric quantity for heating; the reaction time was 1h, and synthesis gas III was finally obtained, consisting of 160000 ml carbon monoxide, 140000 ml hydrogen, 15000 ml methane and 5000 ml carbon dioxide.

Example 4

As shown in fig. 1, methane is passed through a methane gas line and carbon dioxide is passed through a carbon dioxide gas line. In the gas buffer tank, methane and carbon dioxide are mixed according to the volume ratio of 1:2 to obtain mixed gas I, the mixed gas I is introduced into a heat exchanger for heat exchange, and the heat exchange coefficient of the heat exchanger is 1500W/m²K, heat exchange area of 2m²Preheating the mixed gas I to 250 ℃; introducing the preheated mixed gas II into a reforming reaction chamber at the rate of 180000 mL/h for reaction; in the reforming reaction chamber, 500g of Pt/CeO is selected as the catalyst in the tubular reactor₂-ZrO₂(ii) a The solar energy collecting device and the irradiation direction of the sunlight are adjusted by the solar energy automatic tracking device, and the irradiation intensity is 950W/m²The area of the solar energy condensing device receiving vertical illumination is 1.2m²Opening 8 solar silicon panel cells (other 4 cells are folded) on the photoelectric conversion device to receive illumination, converting 30% of light energy into electric energy and storing the electric energy in a storage battery; the temperature control heating device monitors the temperature of the reforming reaction chamber in real time and sets the reaction temperature to 900 ℃; the heat conductivity coefficient of the heat conducting oil is 400W/m²K, 1 kg of heat conducting oil, and the heat conducting oil is heated by a temperature control heater when the temperature is lower than 900 ℃. At the moment, the illumination is sufficient, and the storage battery does not provide electric quantity for heating; the reaction time was 2 h and a synthesis gas III consisting of 200000 ml carbon monoxide, 120000 ml hydrogen, 20000 ml methane and 8000 ml carbon dioxide was finally obtained.

Example 5

As shown in FIG. 1, methane is reactedThrough the methane gas line, the carbon dioxide passes through the carbon dioxide gas line. In the gas buffer tank, methane and carbon dioxide are mixed according to the volume ratio of 1:1 to obtain mixed gas I, the mixed gas I is introduced into a heat exchanger for heat exchange, and the heat exchange coefficient of the heat exchanger is 2000W/m²K, heat exchange area of 2m²Preheating the mixed gas I to 150 ℃; introducing the preheated mixed gas II into a reforming reaction chamber at a speed of 100000 mL/h for reaction; in the reforming reaction chamber, 200g of CeO is selected as the catalyst in the tubular reactor₂MgO and 200g Pt/CeO₂-ZrO₂(ii) a The solar energy gathering device and the irradiation direction of the sunlight are adjusted by the solar energy automatic tracking device, and the irradiation intensity is 600W/m²The area of the solar energy condensing device receiving vertical illumination is 1.2m²Opening 6 solar silicon panel cells (other 6 cells are folded and collected) on the photoelectric conversion device to receive illumination, converting 20% of light energy into electric energy and storing the electric energy in a storage battery; the temperature control heating device monitors the temperature of the reforming reaction chamber in real time and sets the reaction temperature to 800 ℃; the heat conductivity coefficient of the heat conducting oil is 400W/m²K, 1 kg of heat conducting oil, and the heat conducting oil is heated by a temperature control heater when the temperature is lower than 800 ℃. At the moment, the illumination is sufficient, and 80% of the electric quantity stored by the storage battery is used for heating the reaction chamber; the reaction time was 1h, and a synthesis gas III consisting of 80000 ml of carbon monoxide, 60000 ml of hydrogen, 15000 ml of methane and 5000 ml of carbon dioxide was finally obtained.

Example 6 as shown in fig. 1, methane was passed through a methane gas line and carbon dioxide was passed through a carbon dioxide gas line. In the gas buffer tank, methane and carbon dioxide are mixed according to the volume ratio of 1.5:1 to obtain mixed gas I, the mixed gas I is introduced into a heat exchanger for heat exchange, and the heat exchange coefficient of the heat exchanger is 1800W/m²K, heat exchange area of 2m²Preheating the mixed gas I to 100 ℃; introducing the preheated mixed gas II into a reforming reaction chamber at the speed of 150000 mL/h for reaction; in the reforming reaction chamber, 200g of Pt/CeO is selected as the catalyst in the tubular reactor₂-ZrO₂And 200g of Ni/CeAlO₃-Al₂O₃(ii) a Adjusting solar concentration via solar auto-tracking deviceThe intensity of the sunlight from the device to the irradiation direction of the sunlight is 500W/m²The area of the solar energy condensing device receiving vertical illumination is 1.2m²Opening 4 solar silicon crystal panel cells (other 8 cells are folded) on the photoelectric conversion device to receive illumination, converting 18% of light energy into electric energy and storing the electric energy in a storage battery; the temperature control heating device monitors the temperature of the reforming reaction chamber in real time and sets the reaction temperature to 800 ℃; the heat conductivity coefficient of the heat conducting oil is 400W/m²K, 1 kg of heat conducting oil, and the heat conducting oil is heated by a temperature control heater when the temperature is lower than 800 ℃. At the moment, the illumination is not sufficient, and the electric quantity stored by the storage battery is all used for heating the reaction chamber; the reaction time was 1h, and a synthesis gas III consisting of 105000 ml of carbon monoxide, 95000 ml of hydrogen, 40000 ml of methane and 5000 ml of carbon dioxide was finally obtained.

TABLE 1 reforming of CH by solar energy₄/CO₂Apparatus and method for producing synthesis gas

The invention strengthens the condensation of solar energy, converts the solar energy into heat energy and electric energy which are used as heat sources required by methane/carbon dioxide reforming reaction, and further leads greenhouse gas CO to be₂And CH₄Conversion to value-added syngas CO and H₂. As shown in Table 1, under the conditions of the reforming temperature of 800 ℃ and 900 ℃, the energy required by the reforming reaction process can be provided by solar energy of about 992.0 kJ, which is equivalent to the heat generated by the combustion of 33.8 g of standard coal, and the indirect emission reduction of 81.4 g of CO is realized₂While the process also directly reacts to consume CO₂ 157.0 g/h, and the purposes of value improvement, consumption reduction and emission reduction in the process of energy resource utilization are realized.

Various other changes and modifications to the invention will become apparent to those skilled in the art from the foregoing description and the accompanying drawings, and all such changes and modifications are intended to be included within the scope of the invention as defined in the appended claims.